kdefx Library API Documentation

kstyle.cpp

00001 /*
00002  * $Id: kstyle.cpp,v 1.30.2.1 2003/07/15 00:40:50 mueller Exp $
00003  *
00004  * KStyle
00005  * Copyright (C) 2001-2002 Karol Szwed <gallium@kde.org>
00006  *
00007  * QWindowsStyle CC_ListView and style images were kindly donated by TrollTech,
00008  * Copyright (C) 1998-2000 TrollTech AS.
00009  *
00010  * Many thanks to Bradley T. Hughes for the 3 button scrollbar code.
00011  *
00012  * This library is free software; you can redistribute it and/or
00013  * modify it under the terms of the GNU Library General Public
00014  * License version 2 as published by the Free Software Foundation.
00015  *
00016  * This library is distributed in the hope that it will be useful,
00017  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00019  * Library General Public License for more details.
00020  *
00021  * You should have received a copy of the GNU Library General Public License
00022  * along with this library; see the file COPYING.LIB.  If not, write to
00023  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00024  * Boston, MA 02111-1307, USA.
00025  */
00026 
00027 #ifdef HAVE_CONFIG_H
00028 #include "config.h"
00029 #endif
00030 
00031 #include <qapplication.h>
00032 #include <qbitmap.h>
00033 #include <qcleanuphandler.h>
00034 #include <qmap.h>
00035 #include <qimage.h>
00036 #include <qlistview.h>
00037 #include <qmenubar.h>
00038 #include <qpainter.h>
00039 #include <qpixmap.h>
00040 #include <qpopupmenu.h>
00041 #include <qprogressbar.h>
00042 #include <qscrollbar.h>
00043 #include <qsettings.h>
00044 #include <qslider.h>
00045 #include <qstylefactory.h>
00046 #include <qtabbar.h>
00047 #include <qtoolbar.h>
00048 
00049 #include <kpixmap.h>
00050 #include <kpixmapeffect.h>
00051 #include <kimageeffect.h>
00052 #include "kstyle.h"
00053 
00054 #include <X11/Xlib.h>
00055 #ifdef HAVE_XRENDER
00056 #include <X11/extensions/Xrender.h>
00057 extern bool qt_use_xrender;
00058 #endif
00059 
00060 #include <limits.h>
00061 
00062 namespace
00063 {
00064         // INTERNAL
00065         enum TransparencyEngine {
00066                 Disabled = 0,
00067                 SoftwareTint,
00068                 SoftwareBlend,
00069                 XRender
00070         };
00071 
00072         // Drop Shadow
00073         struct ShadowElements {
00074                 QWidget* w1;
00075                 QWidget* w2;
00076         };
00077         typedef QMap<const QPopupMenu*,ShadowElements> ShadowMap;
00078         static ShadowMap *_shadowMap = 0;
00079         QSingleCleanupHandler<ShadowMap> cleanupShadowMap;
00080         ShadowMap &shadowMap() {
00081             if ( !_shadowMap ) {
00082                 _shadowMap = new ShadowMap;
00083                 cleanupShadowMap.set( &_shadowMap );
00084             }
00085             return *_shadowMap;
00086         }
00087 
00088 
00089         // DO NOT ASK ME HOW I MADE THESE TABLES!
00090         // (I probably won't remember anyway ;)
00091         const double top_right_corner[16] =
00092                 { 0.949, 0.965, 0.980, 0.992,
00093                   0.851, 0.890, 0.945, 0.980,
00094                   0.706, 0.780, 0.890, 0.960,
00095                   0.608, 0.706, 0.851, 0.949 };
00096 
00097         const double bottom_right_corner[16] =
00098                 { 0.608, 0.706, 0.851, 0.949,
00099                   0.706, 0.780, 0.890, 0.960,
00100                   0.851, 0.890, 0.945, 0.980,
00101                   0.949, 0.965, 0.980, 0.992 };
00102 
00103         const double bottom_left_corner[16] =
00104                 { 0.949, 0.851, 0.706, 0.608,
00105                   0.965, 0.890, 0.780, 0.706,
00106                   0.980, 0.945, 0.890, 0.851,
00107                   0.992, 0.980, 0.960, 0.949 };
00108 
00109         const double shadow_strip[4] =
00110                 { 0.565, 0.675, 0.835, 0.945 };
00111 }
00112 
00113 
00114 struct KStylePrivate
00115 {
00116         bool  highcolor                : 1;
00117         bool  useFilledFrameWorkaround : 1;
00118         bool  etchDisabledText         : 1;
00119         bool  scrollablePopupmenus     : 1;
00120         bool  menuAltKeyNavigation     : 1;
00121         bool  menuDropShadow           : 1;
00122         int   popupMenuDelay;
00123         float menuOpacity;
00124 
00125         TransparencyEngine   transparencyEngine;
00126         KStyle::KStyleScrollBarType  scrollbarType;
00127         TransparencyHandler* menuHandler;
00128         KStyle::KStyleFlags flags;
00129 };
00130 
00131 
00132 class TransparencyHandler : public QObject
00133 {
00134         public:
00135                 TransparencyHandler(KStyle* style, TransparencyEngine tEngine,
00136                                                         float menuOpacity, bool useDropShadow);
00137                 ~TransparencyHandler();
00138                 bool eventFilter(QObject* object, QEvent* event);
00139 
00140         protected:
00141                 void blendToColor(const QColor &col);
00142                 void blendToPixmap(const QColorGroup &cg, const QPopupMenu* p);
00143 #ifdef HAVE_XRENDER
00144                 void XRenderBlendToPixmap(const QPopupMenu* p);
00145 #endif
00146                 void createShadowWindows(const QPopupMenu* p);
00147                 void removeShadowWindows(const QPopupMenu* p);
00148                 void rightShadow(QImage& dst);
00149                 void bottomShadow(QImage& dst);
00150         private:
00151                 bool    dropShadow;
00152                 float   opacity;
00153                 QPixmap pix;
00154                 KStyle* kstyle;
00155                 TransparencyEngine te;
00156 };
00157 
00158 
00159 // -----------------------------------------------------------------------------
00160 
00161 
00162 KStyle::KStyle( KStyleFlags flags, KStyleScrollBarType sbtype )
00163         : QCommonStyle(), d(new KStylePrivate)
00164 {
00165         d->flags = flags;
00166         bool useMenuTransparency    = (flags & AllowMenuTransparency);
00167         d->useFilledFrameWorkaround = (flags & FilledFrameWorkaround);
00168         d->scrollbarType = sbtype;
00169         d->highcolor = QPixmap::defaultDepth() > 8;
00170 
00171         // Read style settings
00172         QSettings settings;
00173         d->popupMenuDelay       = settings.readNumEntry ("/KStyle/Settings/PopupMenuDelay", 256);
00174         d->etchDisabledText     = settings.readBoolEntry("/KStyle/Settings/EtchDisabledText", true);
00175         d->menuAltKeyNavigation = settings.readBoolEntry("/KStyle/Settings/MenuAltKeyNavigation", true);
00176         d->scrollablePopupmenus = settings.readBoolEntry("/KStyle/Settings/ScrollablePopupMenus", false);
00177         d->menuDropShadow       = settings.readBoolEntry("/KStyle/Settings/MenuDropShadow", false);
00178         d->menuHandler = NULL;
00179 
00180         if (useMenuTransparency) {
00181                 QString effectEngine = settings.readEntry("/KStyle/Settings/MenuTransparencyEngine", "Disabled");
00182 
00183 #ifdef HAVE_XRENDER
00184                 if (effectEngine == "XRender")
00185                         d->transparencyEngine = XRender;
00186 #else
00187                 if (effectEngine == "XRender")
00188                         d->transparencyEngine = SoftwareBlend;
00189 #endif
00190                 else if (effectEngine == "SoftwareBlend")
00191                         d->transparencyEngine = SoftwareBlend;
00192                 else if (effectEngine == "SoftwareTint")
00193                         d->transparencyEngine = SoftwareTint;
00194                 else
00195                         d->transparencyEngine = Disabled;
00196 
00197                 if (d->transparencyEngine != Disabled) {
00198                         // Create an instance of the menu transparency handler
00199                         d->menuOpacity = settings.readDoubleEntry("/KStyle/Settings/MenuOpacity", 0.90);
00200                         d->menuHandler = new TransparencyHandler(this, d->transparencyEngine,
00201                                                                                                          d->menuOpacity, d->menuDropShadow);
00202                 }
00203         }
00204 
00205         // Create a transparency handler if only drop shadows are enabled.
00206         if (!d->menuHandler && d->menuDropShadow)
00207                 d->menuHandler = new TransparencyHandler(this, Disabled, 1.0, d->menuDropShadow);
00208 }
00209 
00210 
00211 KStyle::~KStyle()
00212 {
00213         if (d->menuHandler)
00214                 delete d->menuHandler;
00215 
00216         d->menuHandler = NULL;
00217         delete d;
00218 }
00219 
00220 
00221 QString KStyle::defaultStyle()
00222 {
00223         if (QPixmap::defaultDepth() > 8)
00224            return QString("keramik");
00225         else
00226            return QString("light, 3rd revision");
00227 }
00228 
00229 
00230 void KStyle::polish( QWidget* widget )
00231 {
00232         if ( d->useFilledFrameWorkaround )
00233         {
00234                 if (widget->inherits("QToolBar"))
00235                         widget->installEventFilter(this);
00236                 if (widget->inherits("QMenuBar"))
00237                         widget->installEventFilter(this);
00238         }
00239 }
00240 
00241 
00242 void KStyle::unPolish( QWidget* widget )
00243 {
00244         if ( d->useFilledFrameWorkaround )
00245         {
00246                 if (widget->inherits("QMenuBar"))
00247                         widget->removeEventFilter(this);
00248                 if (widget->inherits("QToolBar"))
00249                         widget->removeEventFilter(this);
00250         }
00251 }
00252 
00253 
00254 // Style changes (should) always re-polish popups.
00255 void KStyle::polishPopupMenu( QPopupMenu* p )
00256 {
00257         if (!p->testWState( WState_Polished ))
00258                 p->setCheckable(true);
00259 
00260         // Install transparency handler if the effect is enabled.
00261         if ( d->menuHandler &&
00262                 (strcmp(p->name(), "tear off menu") != 0))
00263                         p->installEventFilter(d->menuHandler);
00264 }
00265 
00266 
00267 // -----------------------------------------------------------------------------
00268 // KStyle extensions
00269 // -----------------------------------------------------------------------------
00270 
00271 void KStyle::setScrollBarType(KStyleScrollBarType sbtype)
00272 {
00273         d->scrollbarType = sbtype;
00274 }
00275 
00276 KStyle::KStyleFlags KStyle::styleFlags() const
00277 {
00278         return d->flags;
00279 }
00280 
00281 void KStyle::renderMenuBlendPixmap( KPixmap &pix, const QColorGroup &cg,
00282         const QPopupMenu* /* popup */ ) const
00283 {
00284         pix.fill(cg.button());  // Just tint as the default behaviour
00285 }
00286 
00287 
00288 void KStyle::drawKStylePrimitive( KStylePrimitive kpe,
00289                                                                   QPainter* p,
00290                                                                   const QWidget* widget,
00291                                                                   const QRect &r,
00292                                                                   const QColorGroup &cg,
00293                                                                   SFlags flags,
00294                                                                   const QStyleOption& /* opt */ ) const
00295 {
00296         switch( kpe )
00297         {
00298                 // Dock / Toolbar / General handles.
00299                 // ---------------------------------
00300 
00301                 case KPE_DockWindowHandle: {
00302 
00303                         // Draws a nice DockWindow handle including the dock title.
00304                         QWidget* wid = const_cast<QWidget*>(widget);
00305                         bool horizontal = flags & Style_Horizontal;
00306                         int x,y,w,h,x2,y2;
00307 
00308                         if ((wid->width() <= 2) || (wid->height() <= 2)) {
00309                                 p->fillRect(r, cg.highlight());
00310                                 return;
00311                         }
00312 
00313                         r.rect( &x, &y, &w, &h );
00314                         x2 = x + w - 1;
00315                         y2 = y + h - 1;
00316 
00317                         QFont fnt;
00318                         fnt = QApplication::font(wid);
00319                         fnt.setPointSize( fnt.pointSize()-2 );
00320 
00321                         // Draw the item on an off-screen pixmap
00322                         // to preserve Xft antialiasing for
00323                         // vertically oriented handles.
00324                         QPixmap pix;
00325                         if (horizontal)
00326                                 pix.resize( h-2, w-2 );
00327                         else
00328                                 pix.resize( w-2, h-2 );
00329 
00330                         QString title = wid->parentWidget()->caption();
00331                         QPainter p2;
00332                         p2.begin(&pix);
00333                         p2.fillRect(pix.rect(), cg.brush(QColorGroup::Highlight));
00334                         p2.setPen(cg.highlightedText());
00335                         p2.setFont(fnt);
00336                         p2.drawText(pix.rect(), AlignCenter, title);
00337                         p2.end();
00338 
00339                         // Draw a sunken bevel
00340                         p->setPen(cg.dark());
00341                         p->drawLine(x, y, x2, y);
00342                         p->drawLine(x, y, x, y2);
00343                         p->setPen(cg.light());
00344                         p->drawLine(x+1, y2, x2, y2);
00345                         p->drawLine(x2, y+1, x2, y2);
00346 
00347                         if (horizontal) {
00348                                 QWMatrix m;
00349                                 m.rotate(-90.0);
00350                                 QPixmap vpix = pix.xForm(m);
00351                                 bitBlt(wid, r.x()+1, r.y()+1, &vpix);
00352                         } else
00353                                 bitBlt(wid, r.x()+1, r.y()+1, &pix);
00354 
00355                         break;
00356                 }
00357 
00358 
00359                 /*
00360                  * KPE_ListViewExpander and KPE_ListViewBranch are based on code from
00361                  * QWindowStyle's CC_ListView, kindly donated by TrollTech.
00362                  * CC_ListView code is Copyright (C) 1998-2000 TrollTech AS.
00363                  */
00364 
00365                 case KPE_ListViewExpander: {
00366                         // Typical Windows style expand/collapse element.
00367                         int radius = (r.width() - 4) / 2;
00368                         int centerx = r.x() + r.width()/2;
00369                         int centery = r.y() + r.height()/2;
00370 
00371                         // Outer box
00372                         p->setPen( cg.mid() );
00373                         p->drawRect( r );
00374 
00375                         // plus or minus
00376                         p->setPen( cg.text() );
00377                         p->drawLine( centerx - radius, centery, centerx + radius, centery );
00378                         if ( flags & Style_On ) // Collapsed = On
00379                                 p->drawLine( centerx, centery - radius, centerx, centery + radius );
00380                         break;
00381                 }
00382 
00383                 case KPE_ListViewBranch: {
00384                         // Typical Windows style listview branch element (dotted line).
00385 
00386                         static QBitmap *verticalLine = 0, *horizontalLine = 0;
00387                         static QCleanupHandler<QBitmap> qlv_cleanup_bitmap;
00388 
00389                         // Create the dotline pixmaps if not already created
00390                         if ( !verticalLine )
00391                         {
00392                                 // make 128*1 and 1*128 bitmaps that can be used for
00393                                 // drawing the right sort of lines.
00394                                 verticalLine   = new QBitmap( 1, 129, TRUE );
00395                                 horizontalLine = new QBitmap( 128, 1, TRUE );
00396                                 QPointArray a( 64 );
00397                                 QPainter p2;
00398                                 p2.begin( verticalLine );
00399 
00400                                 int i;
00401                                 for( i=0; i < 64; i++ )
00402                                         a.setPoint( i, 0, i*2+1 );
00403                                 p2.setPen( color1 );
00404                                 p2.drawPoints( a );
00405                                 p2.end();
00406                                 QApplication::flushX();
00407                                 verticalLine->setMask( *verticalLine );
00408 
00409                                 p2.begin( horizontalLine );
00410                                 for( i=0; i < 64; i++ )
00411                                         a.setPoint( i, i*2+1, 0 );
00412                                 p2.setPen( color1 );
00413                                 p2.drawPoints( a );
00414                                 p2.end();
00415                                 QApplication::flushX();
00416                                 horizontalLine->setMask( *horizontalLine );
00417 
00418                                 qlv_cleanup_bitmap.add( &verticalLine );
00419                                 qlv_cleanup_bitmap.add( &horizontalLine );
00420                         }
00421 
00422                         p->setPen( cg.text() );         // cg.dark() is bad for dark color schemes.
00423 
00424                         if (flags & Style_Horizontal)
00425                         {
00426                                 int point = r.x();
00427                                 int other = r.y();
00428                                 int end = r.x()+r.width();
00429                                 int thickness = r.height();
00430 
00431                                 while( point < end )
00432                                 {
00433                                         int i = 128;
00434                                         if ( i+point > end )
00435                                                 i = end-point;
00436                                         p->drawPixmap( point, other, *horizontalLine, 0, 0, i, thickness );
00437                                         point += i;
00438                                 }
00439 
00440                         } else {
00441                                 int point = r.y();
00442                                 int other = r.x();
00443                                 int end = r.y()+r.height();
00444                                 int thickness = r.width();
00445                                 int pixmapoffset = (flags & Style_NoChange) ? 0 : 1;    // ### Hackish
00446 
00447                                 while( point < end )
00448                                 {
00449                                         int i = 128;
00450                                         if ( i+point > end )
00451                                                 i = end-point;
00452                                         p->drawPixmap( other, point, *verticalLine, 0, pixmapoffset, thickness, i );
00453                                         point += i;
00454                                 }
00455                         }
00456 
00457                         break;
00458                 }
00459 
00460                 // Reimplement the other primitives in your styles.
00461                 // The current implementation just paints something visibly different.
00462                 case KPE_ToolBarHandle:
00463                 case KPE_GeneralHandle:
00464                 case KPE_SliderHandle:
00465                         p->fillRect(r, cg.light());
00466                         break;
00467 
00468                 case KPE_SliderGroove:
00469                         p->fillRect(r, cg.dark());
00470                         break;
00471 
00472                 default:
00473                         p->fillRect(r, Qt::yellow);     // Something really bad happened - highlight.
00474                         break;
00475         }
00476 }
00477 
00478 
00479 int KStyle::kPixelMetric( KStylePixelMetric kpm, const QWidget* /* widget */) const
00480 {
00481         int value;
00482         switch(kpm)
00483         {
00484                 case KPM_ListViewBranchThickness:
00485                         value = 1;
00486                         break;
00487 
00488                 case KPM_MenuItemSeparatorHeight:
00489                 case KPM_MenuItemHMargin:
00490                 case KPM_MenuItemVMargin:
00491                 case KPM_MenuItemHFrame:
00492                 case KPM_MenuItemVFrame:
00493                 case KPM_MenuItemCheckMarkHMargin:
00494                 case KPM_MenuItemArrowHMargin:
00495                 case KPM_MenuItemTabSpacing:
00496                 default:
00497                         value = 0;
00498         }
00499 
00500         return value;
00501 }
00502 
00503 
00504 // -----------------------------------------------------------------------------
00505 
00506 void KStyle::drawPrimitive( PrimitiveElement pe,
00507                                                         QPainter* p,
00508                                                         const QRect &r,
00509                                                         const QColorGroup &cg,
00510                                                         SFlags flags,
00511                                                         const QStyleOption& opt ) const
00512 {
00513         // TOOLBAR/DOCK WINDOW HANDLE
00514         // ------------------------------------------------------------------------
00515         if (pe == PE_DockWindowHandle)
00516         {
00517                 // Wild workarounds are here. Beware.
00518                 QWidget *widget, *parent;
00519 
00520                 if (p && p->device()->devType() == QInternal::Widget) {
00521                         widget = static_cast<QWidget*>(p->device());
00522                         parent = widget->parentWidget();
00523                 } else
00524                         return;         // Don't paint on non-widgets
00525 
00526                 // Check if we are a normal toolbar or a hidden dockwidget.
00527                 if ( parent &&
00528                         (parent->inherits("QToolBar") ||                // Normal toolbar
00529                         (parent->inherits("QMainWindow")) ))    // Collapsed dock
00530 
00531                         // Draw a toolbar handle
00532                         drawKStylePrimitive( KPE_ToolBarHandle, p, widget, r, cg, flags, opt );
00533 
00534                 else if ( widget->inherits("QDockWindowHandle") )
00535 
00536                         // Draw a dock window handle
00537                         drawKStylePrimitive( KPE_DockWindowHandle, p, widget, r, cg, flags, opt );
00538 
00539                 else
00540                         // General handle, probably a kicker applet handle.
00541                         drawKStylePrimitive( KPE_GeneralHandle, p, widget, r, cg, flags, opt );
00542 
00543         } else
00544                 QCommonStyle::drawPrimitive( pe, p, r, cg, flags, opt );
00545 }
00546 
00547 
00548 
00549 void KStyle::drawControl( ControlElement element,
00550                                                   QPainter* p,
00551                                                   const QWidget* widget,
00552                                                   const QRect &r,
00553                                                   const QColorGroup &cg,
00554                                                   SFlags flags,
00555                                                   const QStyleOption &opt ) const
00556 {
00557         switch (element)
00558         {
00559                 // TABS
00560                 // ------------------------------------------------------------------------
00561                 case CE_TabBarTab: {
00562                         const QTabBar* tb  = (const QTabBar*) widget;
00563                         QTabBar::Shape tbs = tb->shape();
00564                         bool selected      = flags & Style_Selected;
00565                         int x = r.x(), y=r.y(), bottom=r.bottom(), right=r.right();
00566 
00567                         switch (tbs) {
00568 
00569                                 case QTabBar::RoundedAbove: {
00570                                         if (!selected)
00571                                                 p->translate(0,1);
00572                                         p->setPen(selected ? cg.light() : cg.shadow());
00573                                         p->drawLine(x, y+4, x, bottom);
00574                                         p->drawLine(x, y+4, x+4, y);
00575                                         p->drawLine(x+4, y, right-1, y);
00576                                         if (selected)
00577                                                 p->setPen(cg.shadow());
00578                                         p->drawLine(right, y+1, right, bottom);
00579 
00580                                         p->setPen(cg.midlight());
00581                                         p->drawLine(x+1, y+4, x+1, bottom);
00582                                         p->drawLine(x+1, y+4, x+4, y+1);
00583                                         p->drawLine(x+5, y+1, right-2, y+1);
00584 
00585                                         if (selected) {
00586                                                 p->setPen(cg.mid());
00587                                                 p->drawLine(right-1, y+1, right-1, bottom);
00588                                         } else {
00589                                                 p->setPen(cg.mid());
00590                                                 p->drawPoint(right-1, y+1);
00591                                                 p->drawLine(x+4, y+2, right-1, y+2);
00592                                                 p->drawLine(x+3, y+3, right-1, y+3);
00593                                                 p->fillRect(x+2, y+4, r.width()-3, r.height()-6, cg.mid());
00594 
00595                                                 p->setPen(cg.light());
00596                                                 p->drawLine(x, bottom-1, right, bottom-1);
00597                                                 p->translate(0,-1);
00598                                         }
00599                                         break;
00600                                 }
00601 
00602                                 case QTabBar::RoundedBelow: {
00603                                         if (!selected)
00604                                                 p->translate(0,-1);
00605                                         p->setPen(selected ? cg.light() : cg.shadow());
00606                                         p->drawLine(x, bottom-4, x, y);
00607                                         if (selected)
00608                                                 p->setPen(cg.mid());
00609                                         p->drawLine(x, bottom-4, x+4, bottom);
00610                                         if (selected)
00611                                                 p->setPen(cg.shadow());
00612                                         p->drawLine(x+4, bottom, right-1, bottom);
00613                                         p->drawLine(right, bottom-1, right, y);
00614 
00615                                         p->setPen(cg.midlight());
00616                                         p->drawLine(x+1, bottom-4, x+1, y);
00617                                         p->drawLine(x+1, bottom-4, x+4, bottom-1);
00618                                         p->drawLine(x+5, bottom-1, right-2, bottom-1);
00619 
00620                                         if (selected) {
00621                                                 p->setPen(cg.mid());
00622                                                 p->drawLine(right-1, y, right-1, bottom-1);
00623                                         } else {
00624                                                 p->setPen(cg.mid());
00625                                                 p->drawPoint(right-1, bottom-1);
00626                                                 p->drawLine(x+4, bottom-2, right-1, bottom-2);
00627                                                 p->drawLine(x+3, bottom-3, right-1, bottom-3);
00628                                                 p->fillRect(x+2, y+2, r.width()-3, r.height()-6, cg.mid());
00629                                                 p->translate(0,1);
00630                                                 p->setPen(cg.dark());
00631                                                 p->drawLine(x, y, right, y);
00632                                         }
00633                                         break;
00634                                 }
00635 
00636                                 case QTabBar::TriangularAbove: {
00637                                         if (!selected)
00638                                                 p->translate(0,1);
00639                                         p->setPen(selected ? cg.light() : cg.shadow());
00640                                         p->drawLine(x, bottom, x, y+6);
00641                                         p->drawLine(x, y+6, x+6, y);
00642                                         p->drawLine(x+6, y, right-6, y);
00643                                         if (selected)
00644                                                 p->setPen(cg.mid());
00645                                         p->drawLine(right-5, y+1, right-1, y+5);
00646                                         p->setPen(cg.shadow());
00647                                         p->drawLine(right, y+6, right, bottom);
00648 
00649                                         p->setPen(cg.midlight());
00650                                         p->drawLine(x+1, bottom, x+1, y+6);
00651                                         p->drawLine(x+1, y+6, x+6, y+1);
00652                                         p->drawLine(x+6, y+1, right-6, y+1);
00653                                         p->drawLine(right-5, y+2, right-2, y+5);
00654                                         p->setPen(cg.mid());
00655                                         p->drawLine(right-1, y+6, right-1, bottom);
00656 
00657                                         QPointArray a(6);
00658                                         a.setPoint(0, x+2, bottom);
00659                                         a.setPoint(1, x+2, y+7);
00660                                         a.setPoint(2, x+7, y+2);
00661                                         a.setPoint(3, right-7, y+2);
00662                                         a.setPoint(4, right-2, y+7);
00663                                         a.setPoint(5, right-2, bottom);
00664                                         p->setPen  (selected ? cg.background() : cg.mid());
00665                                         p->setBrush(selected ? cg.background() : cg.mid());
00666                                         p->drawPolygon(a);
00667                                         p->setBrush(NoBrush);
00668                                         if (!selected) {
00669                                                 p->translate(0,-1);
00670                                                 p->setPen(cg.light());
00671                                                 p->drawLine(x, bottom, right, bottom);
00672                                         }
00673                                         break;
00674                                 }
00675 
00676                                 default: { // QTabBar::TriangularBelow
00677                                         if (!selected)
00678                                                 p->translate(0,-1);
00679                                         p->setPen(selected ? cg.light() : cg.shadow());
00680                                         p->drawLine(x, y, x, bottom-6);
00681                                         if (selected)
00682                                                 p->setPen(cg.mid());
00683                                         p->drawLine(x, bottom-6, x+6, bottom);
00684                                         if (selected)
00685                                                 p->setPen(cg.shadow());
00686                                         p->drawLine(x+6, bottom, right-6, bottom);
00687                                         p->drawLine(right-5, bottom-1, right-1, bottom-5);
00688                                         if (!selected)
00689                                                 p->setPen(cg.shadow());
00690                                         p->drawLine(right, bottom-6, right, y);
00691 
00692                                         p->setPen(cg.midlight());
00693                                         p->drawLine(x+1, y, x+1, bottom-6);
00694                                         p->drawLine(x+1, bottom-6, x+6, bottom-1);
00695                                         p->drawLine(x+6, bottom-1, right-6, bottom-1);
00696                                         p->drawLine(right-5, bottom-2, right-2, bottom-5);
00697                                         p->setPen(cg.mid());
00698                                         p->drawLine(right-1, bottom-6, right-1, y);
00699 
00700                                         QPointArray a(6);
00701                                         a.setPoint(0, x+2, y);
00702                                         a.setPoint(1, x+2, bottom-7);
00703                                         a.setPoint(2, x+7, bottom-2);
00704                                         a.setPoint(3, right-7, bottom-2);
00705                                         a.setPoint(4, right-2, bottom-7);
00706                                         a.setPoint(5, right-2, y);
00707                                         p->setPen  (selected ? cg.background() : cg.mid());
00708                                         p->setBrush(selected ? cg.background() : cg.mid());
00709                                         p->drawPolygon(a);
00710                                         p->setBrush(NoBrush);
00711                                         if (!selected) {
00712                                                 p->translate(0,1);
00713                                                 p->setPen(cg.dark());
00714                                                 p->drawLine(x, y, right, y);
00715                                         }
00716                                         break;
00717                                 }
00718                         };
00719 
00720                         break;
00721                 }
00722 
00723 
00724                 // PROGRESSBAR
00725                 // ------------------------------------------------------------------------
00726                 case CE_ProgressBarGroove: {
00727                         QRect fr = subRect(SR_ProgressBarGroove, widget);
00728                         drawPrimitive(PE_Panel, p, fr, cg, Style_Sunken, QStyleOption::Default);
00729                         break;
00730                 }
00731 
00732                 case CE_ProgressBarContents: {
00733                         // ### Take into account totalSteps() for busy indicator
00734                         const QProgressBar* pb = (const QProgressBar*)widget;
00735                         QRect cr = subRect(SR_ProgressBarContents, widget);
00736                         double progress = pb->progress();
00737                         bool reverse = QApplication::reverseLayout();
00738                         int steps = pb->totalSteps();
00739 
00740                         if (!cr.isValid())
00741                                 return;
00742 
00743                         // Draw progress bar
00744                         if (progress > 0 || steps == 0) {
00745                                 double pg = (steps == 0) ? 0.1 : progress / steps;
00746                                 int width = QMIN(cr.width(), (int)(pg * cr.width()));
00747                                 if (steps == 0) { //Busy indicator
00748 
00749                                         if (width < 1) width = 1; //A busy indicator with width 0 is kind of useless
00750 
00751                                         int remWidth = cr.width() - width; //Never disappear completely
00752                                         if (remWidth <= 0) remWidth = 1; //Do something non-crashy when too small...
00753 
00754                                         int pstep =  int(progress) % ( 2 *  remWidth );
00755 
00756                                         if ( pstep > remWidth ) {
00757                                                 //Bounce about.. We're remWidth + some delta, we want to be remWidth - delta...
00758                                                 // - ( (remWidth + some delta) - 2* remWidth )  = - (some deleta - remWidth) = remWidth - some delta..
00759                                                 pstep = - (pstep - 2 * remWidth );
00760                                         }
00761 
00762                                         if (reverse)
00763                                                 p->fillRect(cr.x() + cr.width() - width - pstep, cr.y(), width, cr.height(),
00764                                                                         cg.brush(QColorGroup::Highlight));
00765                                         else
00766                                                 p->fillRect(cr.x() + pstep, cr.y(), width, cr.height(),
00767                                                                         cg.brush(QColorGroup::Highlight));
00768 
00769                                         return;
00770                                 }
00771 
00772 
00773                                 // Do fancy gradient for highcolor displays
00774                                 if (d->highcolor) {
00775                                         QColor c(cg.highlight());
00776                                         KPixmap pix;
00777                                         pix.resize(cr.width(), cr.height());
00778                                         KPixmapEffect::gradient(pix, reverse ? c.light(150) : c.dark(150),
00779                                                                                         reverse ? c.dark(150) : c.light(150),
00780                                                                                         KPixmapEffect::HorizontalGradient);
00781                                         if (reverse)
00782                                                 p->drawPixmap(cr.x()+(cr.width()-width), cr.y(), pix,
00783                                                                           cr.width()-width, 0, width, cr.height());
00784                                         else
00785                                                 p->drawPixmap(cr.x(), cr.y(), pix, 0, 0, width, cr.height());
00786                                 } else
00787                                         if (reverse)
00788                                                 p->fillRect(cr.x()+(cr.width()-width), cr.y(), width, cr.height(),
00789                                                                         cg.brush(QColorGroup::Highlight));
00790                                         else
00791                                                 p->fillRect(cr.x(), cr.y(), width, cr.height(),
00792                                                                         cg.brush(QColorGroup::Highlight));
00793                         }
00794                         break;
00795                 }
00796 
00797                 case CE_ProgressBarLabel: {
00798                         const QProgressBar* pb = (const QProgressBar*)widget;
00799                         QRect cr = subRect(SR_ProgressBarContents, widget);
00800                         double progress = pb->progress();
00801                         bool reverse = QApplication::reverseLayout();
00802                         int steps = pb->totalSteps();
00803 
00804                         if (!cr.isValid())
00805                                 return;
00806 
00807                         QFont font = p->font();
00808                         font.setBold(true);
00809                         p->setFont(font);
00810 
00811                         // Draw label
00812                         if (progress > 0 || steps == 0) {
00813                                 double pg = (steps == 0) ? 1.0 : progress / steps;
00814                                 int width = QMIN(cr.width(), (int)(pg * cr.width()));
00815                                 QRect crect;
00816                                 if (reverse)
00817                                         crect.setRect(cr.x()+(cr.width()-width), cr.y(), cr.width(), cr.height());
00818                                 else
00819                                         crect.setRect(cr.x()+width, cr.y(), cr.width(), cr.height());
00820 
00821                                 p->save();
00822                                 p->setPen(pb->isEnabled() ? (reverse ? cg.text() : cg.highlightedText()) : cg.text());
00823                                 p->drawText(r, AlignCenter, pb->progressString());
00824                                 p->setClipRect(crect);
00825                                 p->setPen(reverse ? cg.highlightedText() : cg.text());
00826                                 p->drawText(r, AlignCenter, pb->progressString());
00827                                 p->restore();
00828 
00829                         } else {
00830                                 p->setPen(cg.text());
00831                                 p->drawText(r, AlignCenter, pb->progressString());
00832                         }
00833 
00834                         break;
00835                 }
00836 
00837                 default:
00838                         QCommonStyle::drawControl(element, p, widget, r, cg, flags, opt);
00839         }
00840 }
00841 
00842 
00843 QRect KStyle::subRect(SubRect r, const QWidget* widget) const
00844 {
00845         switch(r)
00846         {
00847                 // KDE2 look smooth progress bar
00848                 // ------------------------------------------------------------------------
00849                 case SR_ProgressBarGroove:
00850                         return widget->rect();
00851 
00852                 case SR_ProgressBarContents:
00853                 case SR_ProgressBarLabel: {
00854                         // ### take into account indicatorFollowsStyle()
00855                         QRect rt = widget->rect();
00856                         return QRect(rt.x()+2, rt.y()+2, rt.width()-4, rt.height()-4);
00857                 }
00858 
00859                 default:
00860                         return QCommonStyle::subRect(r, widget);
00861         }
00862 }
00863 
00864 
00865 int KStyle::pixelMetric(PixelMetric m, const QWidget* widget) const
00866 {
00867         switch(m)
00868         {
00869                 // BUTTONS
00870                 // ------------------------------------------------------------------------
00871                 case PM_ButtonShiftHorizontal:          // Offset by 1
00872                 case PM_ButtonShiftVertical:            // ### Make configurable
00873                         return 1;
00874 
00875                 // TABS
00876                 // ------------------------------------------------------------------------
00877                 case PM_TabBarTabHSpace:
00878                         return 24;
00879 
00880                 case PM_TabBarTabVSpace: {
00881                         const QTabBar * tb = (const QTabBar *) widget;
00882                         if ( tb->shape() == QTabBar::RoundedAbove ||
00883                                  tb->shape() == QTabBar::RoundedBelow )
00884                                 return 10;
00885                         else
00886                                 return 4;
00887                 }
00888 
00889                 case PM_TabBarTabOverlap: {
00890                         const QTabBar* tb = (const QTabBar*)widget;
00891                         QTabBar::Shape tbs = tb->shape();
00892 
00893                         if ( (tbs == QTabBar::RoundedAbove) ||
00894                                  (tbs == QTabBar::RoundedBelow) )
00895                                 return 0;
00896                         else
00897                                 return 2;
00898                 }
00899 
00900                 // SLIDER
00901                 // ------------------------------------------------------------------------
00902                 case PM_SliderLength:
00903                         return 18;
00904 
00905                 case PM_SliderThickness:
00906                         return 24;
00907 
00908                 // Determines how much space to leave for the actual non-tickmark
00909                 // portion of the slider.
00910                 case PM_SliderControlThickness: {
00911                         const QSlider* slider   = (const QSlider*)widget;
00912                         QSlider::TickSetting ts = slider->tickmarks();
00913                         int thickness = (slider->orientation() == Horizontal) ?
00914                                                          slider->height() : slider->width();
00915                         switch (ts) {
00916                                 case QSlider::NoMarks:                          // Use total area.
00917                                         break;
00918                                 case QSlider::Both:
00919                                         thickness = (thickness/2) + 3;  // Use approx. 1/2 of area.
00920                                         break;
00921                                 default:                                                        // Use approx. 2/3 of area
00922                                         thickness = ((thickness*2)/3) + 3;
00923                                         break;
00924                         };
00925                         return thickness;
00926                 }
00927 
00928                 // SPLITTER
00929                 // ------------------------------------------------------------------------
00930                 case PM_SplitterWidth:
00931                         if (widget && widget->inherits("QDockWindowResizeHandle"))
00932                                 return 8;       // ### why do we need 2pix extra?
00933                         else
00934                                 return 6;
00935 
00936                 // FRAMES
00937                 // ------------------------------------------------------------------------
00938                 case PM_MenuBarFrameWidth:
00939                         return 1;
00940 
00941                 case PM_DockWindowFrameWidth:
00942                         return 1;
00943 
00944                 // GENERAL
00945                 // ------------------------------------------------------------------------
00946                 case PM_MaximumDragDistance:
00947                         return -1;
00948 
00949                 default:
00950                         return QCommonStyle::pixelMetric( m, widget );
00951         }
00952 }
00953 
00954 
00955 void KStyle::drawComplexControl( ComplexControl control,
00956                                                                  QPainter* p,
00957                                                                  const QWidget* widget,
00958                                                                  const QRect &r,
00959                                                                  const QColorGroup &cg,
00960                                                                  SFlags flags,
00961                                                                  SCFlags controls,
00962                                                                  SCFlags active,
00963                                                                  const QStyleOption &opt ) const
00964 {
00965         switch(control)
00966         {
00967                 // 3 BUTTON SCROLLBAR
00968                 // ------------------------------------------------------------------------
00969                 case CC_ScrollBar: {
00970                         // Many thanks to Brad Hughes for contributing this code.
00971                         bool useThreeButtonScrollBar = (d->scrollbarType & ThreeButtonScrollBar);
00972 
00973                         const QScrollBar *sb = (const QScrollBar*)widget;
00974                         bool   maxedOut   = (sb->minValue()    == sb->maxValue());
00975                         bool   horizontal = (sb->orientation() == Qt::Horizontal);
00976                         SFlags sflags     = ((horizontal ? Style_Horizontal : Style_Default) |
00977                                                                  (maxedOut   ? Style_Default : Style_Enabled));
00978 
00979                         QRect  addline, subline, subline2, addpage, subpage, slider, first, last;
00980                         subline = querySubControlMetrics(control, widget, SC_ScrollBarSubLine, opt);
00981                         addline = querySubControlMetrics(control, widget, SC_ScrollBarAddLine, opt);
00982                         subpage = querySubControlMetrics(control, widget, SC_ScrollBarSubPage, opt);
00983                         addpage = querySubControlMetrics(control, widget, SC_ScrollBarAddPage, opt);
00984                         slider  = querySubControlMetrics(control, widget, SC_ScrollBarSlider,  opt);
00985                         first   = querySubControlMetrics(control, widget, SC_ScrollBarFirst,   opt);
00986                         last    = querySubControlMetrics(control, widget, SC_ScrollBarLast,    opt);
00987                         subline2 = addline;
00988 
00989                         if ( useThreeButtonScrollBar )
00990                                 if (horizontal)
00991                                         subline2.moveBy(-addline.width(), 0);
00992                                 else
00993                                         subline2.moveBy(0, -addline.height());
00994 
00995                         // Draw the up/left button set
00996                         if ((controls & SC_ScrollBarSubLine) && subline.isValid()) {
00997                                 drawPrimitive(PE_ScrollBarSubLine, p, subline, cg,
00998                                                         sflags | (active == SC_ScrollBarSubLine ?
00999                                                                 Style_Down : Style_Default));
01000 
01001                                 if (useThreeButtonScrollBar && subline2.isValid())
01002                                         drawPrimitive(PE_ScrollBarSubLine, p, subline2, cg,
01003                                                         sflags | (active == SC_ScrollBarSubLine ?
01004                                                                 Style_Down : Style_Default));
01005                         }
01006 
01007                         if ((controls & SC_ScrollBarAddLine) && addline.isValid())
01008                                 drawPrimitive(PE_ScrollBarAddLine, p, addline, cg,
01009                                                         sflags | ((active == SC_ScrollBarAddLine) ?
01010                                                                                 Style_Down : Style_Default));
01011 
01012                         if ((controls & SC_ScrollBarSubPage) && subpage.isValid())
01013                                 drawPrimitive(PE_ScrollBarSubPage, p, subpage, cg,
01014                                                         sflags | ((active == SC_ScrollBarSubPage) ?
01015                                                                                 Style_Down : Style_Default));
01016 
01017                         if ((controls & SC_ScrollBarAddPage) && addpage.isValid())
01018                                 drawPrimitive(PE_ScrollBarAddPage, p, addpage, cg,
01019                                                         sflags | ((active == SC_ScrollBarAddPage) ?
01020                                                                                 Style_Down : Style_Default));
01021 
01022                         if ((controls & SC_ScrollBarFirst) && first.isValid())
01023                                 drawPrimitive(PE_ScrollBarFirst, p, first, cg,
01024                                                         sflags | ((active == SC_ScrollBarFirst) ?
01025                                                                                 Style_Down : Style_Default));
01026 
01027                         if ((controls & SC_ScrollBarLast) && last.isValid())
01028                                 drawPrimitive(PE_ScrollBarLast, p, last, cg,
01029                                                         sflags | ((active == SC_ScrollBarLast) ?
01030                                                                                 Style_Down : Style_Default));
01031 
01032                         if ((controls & SC_ScrollBarSlider) && slider.isValid()) {
01033                                 drawPrimitive(PE_ScrollBarSlider, p, slider, cg,
01034                                                         sflags | ((active == SC_ScrollBarSlider) ?
01035                                                                                 Style_Down : Style_Default));
01036                                 // Draw focus rect
01037                                 if (sb->hasFocus()) {
01038                                         QRect fr(slider.x() + 2, slider.y() + 2,
01039                                                          slider.width() - 5, slider.height() - 5);
01040                                         drawPrimitive(PE_FocusRect, p, fr, cg, Style_Default);
01041                                 }
01042                         }
01043                         break;
01044                 }
01045 
01046 
01047                 // SLIDER
01048                 // -------------------------------------------------------------------
01049                 case CC_Slider: {
01050                         const QSlider* slider = (const QSlider*)widget;
01051                         QRect groove = querySubControlMetrics(CC_Slider, widget, SC_SliderGroove, opt);
01052                         QRect handle = querySubControlMetrics(CC_Slider, widget, SC_SliderHandle, opt);
01053 
01054                         // Double-buffer slider for no flicker
01055                         QPixmap pix(widget->size());
01056                         QPainter p2;
01057                         p2.begin(&pix);
01058 
01059                         if ( slider->parentWidget() &&
01060                                  slider->parentWidget()->backgroundPixmap() &&
01061                                  !slider->parentWidget()->backgroundPixmap()->isNull() ) {
01062                                 QPixmap pixmap = *(slider->parentWidget()->backgroundPixmap());
01063                                 p2.drawTiledPixmap(r, pixmap, slider->pos());
01064                         } else
01065                                 pix.fill(cg.background());
01066 
01067                         // Draw slider groove
01068                         if ((controls & SC_SliderGroove) && groove.isValid()) {
01069                                 drawKStylePrimitive( KPE_SliderGroove, &p2, widget, groove, cg, flags, opt );
01070 
01071                                 // Draw the focus rect around the groove
01072                                 if (slider->hasFocus())
01073                                         drawPrimitive(PE_FocusRect, &p2, groove, cg);
01074                         }
01075 
01076                         // Draw the tickmarks
01077                         if (controls & SC_SliderTickmarks)
01078                                 QCommonStyle::drawComplexControl(control, &p2, widget,
01079                                                 r, cg, flags, SC_SliderTickmarks, active, opt);
01080 
01081                         // Draw the slider handle
01082                         if ((controls & SC_SliderHandle) && handle.isValid()) {
01083                                 if (active == SC_SliderHandle)
01084                                         flags |= Style_Active;
01085                                 drawKStylePrimitive( KPE_SliderHandle, &p2, widget, handle, cg, flags, opt );
01086                         }
01087 
01088                         p2.end();
01089                         bitBlt((QWidget*)widget, r.x(), r.y(), &pix);
01090                         break;
01091                 }
01092 
01093                 // LISTVIEW
01094                 // -------------------------------------------------------------------
01095                 case CC_ListView: {
01096 
01097                         /*
01098                          * Many thanks to TrollTech AS for donating CC_ListView from QWindowsStyle.
01099                          * CC_ListView code is Copyright (C) 1998-2000 TrollTech AS.
01100                          */
01101 
01102                         // Paint the icon and text.
01103                         if ( controls & SC_ListView )
01104                                 QCommonStyle::drawComplexControl( control, p, widget, r, cg, flags, controls, active, opt );
01105 
01106                         // If we're have a branch or are expanded...
01107                         if ( controls & (SC_ListViewBranch | SC_ListViewExpand) )
01108                         {
01109                                 // If no list view item was supplied, break
01110                                 if (opt.isDefault())
01111                                         break;
01112 
01113                                 QListViewItem *item  = opt.listViewItem();
01114                                 QListViewItem *child = item->firstChild();
01115 
01116                                 int y = r.y();
01117                                 int c;  // dotline vertice count
01118                                 int dotoffset = 0;
01119                                 QPointArray dotlines;
01120 
01121                                 if ( active == SC_All && controls == SC_ListViewExpand ) {
01122                                         // We only need to draw a vertical line
01123                                         c = 2;
01124                                         dotlines.resize(2);
01125                                         dotlines[0] = QPoint( r.right(), r.top() );
01126                                         dotlines[1] = QPoint( r.right(), r.bottom() );
01127 
01128                                 } else {
01129 
01130                                         int linetop = 0, linebot = 0;
01131                                         // each branch needs at most two lines, ie. four end points
01132                                         dotoffset = (item->itemPos() + item->height() - y) % 2;
01133                                         dotlines.resize( item->childCount() * 4 );
01134                                         c = 0;
01135 
01136                                         // skip the stuff above the exposed rectangle
01137                                         while ( child && y + child->height() <= 0 )
01138                                         {
01139                                                 y += child->totalHeight();
01140                                                 child = child->nextSibling();
01141                                         }
01142 
01143                                         int bx = r.width() / 2;
01144 
01145                                         // paint stuff in the magical area
01146                                         QListView* v = item->listView();
01147                                         int lh = QMAX( p->fontMetrics().height() + 2 * v->itemMargin(),
01148                                                                    QApplication::globalStrut().height() );
01149                                         if ( lh % 2 > 0 )
01150                                                 lh++;
01151 
01152                                         // Draw all the expand/close boxes...
01153                                         QRect boxrect;
01154                                         QStyle::StyleFlags boxflags;
01155                                         while ( child && y < r.height() )
01156                                         {
01157                                                 linebot = y + lh/2;
01158                                                 if ( (child->isExpandable() || child->childCount()) &&
01159                                                          (child->height() > 0) )
01160                                                 {
01161                                                         // The primitive requires a rect.
01162                                                         boxrect = QRect( bx-4, linebot-4, 9, 9 );
01163                                                         boxflags = child->isOpen() ? QStyle::Style_Off : QStyle::Style_On;
01164 
01165                                                         // KStyle extension: Draw the box and expand/collapse indicator
01166                                                         drawKStylePrimitive( KPE_ListViewExpander, p, NULL, boxrect, cg, boxflags, opt );
01167 
01168                                                         // dotlinery
01169                                                         p->setPen( cg.mid() );
01170                                                         dotlines[c++] = QPoint( bx, linetop );
01171                                                         dotlines[c++] = QPoint( bx, linebot - 5 );
01172                                                         dotlines[c++] = QPoint( bx + 5, linebot );
01173                                                         dotlines[c++] = QPoint( r.width(), linebot );
01174                                                         linetop = linebot + 5;
01175                                                 } else {
01176                                                         // just dotlinery
01177                                                         dotlines[c++] = QPoint( bx+1, linebot );
01178                                                         dotlines[c++] = QPoint( r.width(), linebot );
01179                                                 }
01180 
01181                                                 y += child->totalHeight();
01182                                                 child = child->nextSibling();
01183                                         }
01184 
01185                                         if ( child ) // there's a child, so move linebot to edge of rectangle
01186                                                 linebot = r.height();
01187 
01188                                         if ( linetop < linebot )
01189                                         {
01190                                                 dotlines[c++] = QPoint( bx, linetop );
01191                                                 dotlines[c++] = QPoint( bx, linebot );
01192                                         }
01193                                 }
01194 
01195                                 // Draw all the branches...
01196                                 static int thickness = kPixelMetric( KPM_ListViewBranchThickness );
01197                                 int line; // index into dotlines
01198                                 QRect branchrect;
01199                                 QStyle::StyleFlags branchflags;
01200                                 for( line = 0; line < c; line += 2 )
01201                                 {
01202                                         // assumptions here: lines are horizontal or vertical.
01203                                         // lines always start with the numerically lowest
01204                                         // coordinate.
01205 
01206                                         // point ... relevant coordinate of current point
01207                                         // end ..... same coordinate of the end of the current line
01208                                         // other ... the other coordinate of the current point/line
01209                                         if ( dotlines[line].y() == dotlines[line+1].y() )
01210                                         {
01211                                                 // Horizontal branch
01212                                                 int end = dotlines[line+1].x();
01213                                                 int point = dotlines[line].x();
01214                                                 int other = dotlines[line].y();
01215 
01216                                                 branchrect  = QRect( point, other-(thickness/2), end-point, thickness );
01217                                                 branchflags = QStyle::Style_Horizontal;
01218 
01219                                                 // KStyle extension: Draw the horizontal branch
01220                                                 drawKStylePrimitive( KPE_ListViewBranch, p, NULL, branchrect, cg, branchflags, opt );
01221 
01222                                         } else {
01223                                                 // Vertical branch
01224                                                 int end = dotlines[line+1].y();
01225                                                 int point = dotlines[line].y();
01226                                                 int other = dotlines[line].x();
01227                                                 int pixmapoffset = ((point & 1) != dotoffset ) ? 1 : 0;
01228 
01229                                                 branchrect  = QRect( other-(thickness/2), point, thickness, end-point );
01230                                                 if (!pixmapoffset)      // ### Hackish - used to hint the offset
01231                                                         branchflags = QStyle::Style_NoChange;
01232                                                 else
01233                                                         branchflags = QStyle::Style_Default;
01234 
01235                                                 // KStyle extension: Draw the vertical branch
01236                                                 drawKStylePrimitive( KPE_ListViewBranch, p, NULL, branchrect, cg, branchflags, opt );
01237                                         }
01238                                 }
01239                         }
01240                         break;
01241                 }
01242 
01243                 default:
01244                         QCommonStyle::drawComplexControl( control, p, widget, r, cg,
01245                                                                                           flags, controls, active, opt );
01246                         break;
01247         }
01248 }
01249 
01250 
01251 QStyle::SubControl KStyle::querySubControl( ComplexControl control,
01252                                                                                         const QWidget* widget,
01253                                                                                         const QPoint &pos,
01254                                                                                         const QStyleOption &opt ) const
01255 {
01256         QStyle::SubControl ret = QCommonStyle::querySubControl(control, widget, pos, opt);
01257 
01258         if (d->scrollbarType == ThreeButtonScrollBar) {
01259                 // Enable third button
01260                 if (control == CC_ScrollBar && ret == SC_None)
01261                         ret = SC_ScrollBarSubLine;
01262         }
01263         return ret;
01264 }
01265 
01266 
01267 QRect KStyle::querySubControlMetrics( ComplexControl control,
01268                                                                           const QWidget* widget,
01269                                                                           SubControl sc,
01270                                                                           const QStyleOption &opt ) const
01271 {
01272     QRect ret;
01273 
01274         if (control == CC_ScrollBar)
01275         {
01276                 bool threeButtonScrollBar = d->scrollbarType & ThreeButtonScrollBar;
01277                 bool platinumScrollBar    = d->scrollbarType & PlatinumStyleScrollBar;
01278                 bool nextScrollBar        = d->scrollbarType & NextStyleScrollBar;
01279 
01280                 const QScrollBar *sb = (const QScrollBar*)widget;
01281                 bool horizontal = sb->orientation() == Qt::Horizontal;
01282                 int sliderstart = sb->sliderStart();
01283                 int sbextent    = pixelMetric(PM_ScrollBarExtent, widget);
01284                 int maxlen      = (horizontal ? sb->width() : sb->height())
01285                                                   - (sbextent * (threeButtonScrollBar ? 3 : 2));
01286                 int sliderlen;
01287 
01288                 // calculate slider length
01289                 if (sb->maxValue() != sb->minValue())
01290                 {
01291                         uint range = sb->maxValue() - sb->minValue();
01292                         sliderlen = (sb->pageStep() * maxlen) / (range + sb->pageStep());
01293 
01294                         int slidermin = pixelMetric( PM_ScrollBarSliderMin, widget );
01295                         if ( sliderlen < slidermin || range > INT_MAX / 2 )
01296                                 sliderlen = slidermin;
01297                         if ( sliderlen > maxlen )
01298                                 sliderlen = maxlen;
01299                 } else
01300                         sliderlen = maxlen;
01301 
01302                 // Subcontrols
01303                 switch (sc)
01304                 {
01305                         case SC_ScrollBarSubLine: {
01306                                 // top/left button
01307                                 if (platinumScrollBar) {
01308                                         if (horizontal)
01309                                                 ret.setRect(sb->width() - 2 * sbextent, 0, sbextent, sbextent);
01310                                         else
01311                                                 ret.setRect(0, sb->height() - 2 * sbextent, sbextent, sbextent);
01312                                 } else
01313                                         ret.setRect(0, 0, sbextent, sbextent);
01314                                 break;
01315                         }
01316 
01317                         case SC_ScrollBarAddLine: {
01318                                 // bottom/right button
01319                                 if (nextScrollBar) {
01320                                         if (horizontal)
01321                                                 ret.setRect(sbextent, 0, sbextent, sbextent);
01322                                         else
01323                                                 ret.setRect(0, sbextent, sbextent, sbextent);
01324                                 } else {
01325                                         if (horizontal)
01326                                                 ret.setRect(sb->width() - sbextent, 0, sbextent, sbextent);
01327                                         else
01328                                                 ret.setRect(0, sb->height() - sbextent, sbextent, sbextent);
01329                                 }
01330                                 break;
01331                         }
01332 
01333                         case SC_ScrollBarSubPage: {
01334                                 // between top/left button and slider
01335                                 if (platinumScrollBar) {
01336                                         if (horizontal)
01337                                                 ret.setRect(0, 0, sliderstart, sbextent);
01338                                         else
01339                                                 ret.setRect(0, 0, sbextent, sliderstart);
01340                                 } else if (nextScrollBar) {
01341                                         if (horizontal)
01342                                                 ret.setRect(sbextent*2, 0, sliderstart-2*sbextent, sbextent);
01343                                         else
01344                                                 ret.setRect(0, sbextent*2, sbextent, sliderstart-2*sbextent);
01345                                 } else {
01346                                         if (horizontal)
01347                                                 ret.setRect(sbextent, 0, sliderstart - sbextent, sbextent);
01348                                         else
01349                                                 ret.setRect(0, sbextent, sbextent, sliderstart - sbextent);
01350                                 }
01351                                 break;
01352                         }
01353 
01354                         case SC_ScrollBarAddPage: {
01355                                 // between bottom/right button and slider
01356                                 int fudge;
01357 
01358                                 if (platinumScrollBar)
01359                                         fudge = 0;
01360                                 else if (nextScrollBar)
01361                                         fudge = 2*sbextent;
01362                                 else
01363                                         fudge = sbextent;
01364 
01365                                 if (horizontal)
01366                                         ret.setRect(sliderstart + sliderlen, 0,
01367                                                         maxlen - sliderstart - sliderlen + fudge, sbextent);
01368                                 else
01369                                         ret.setRect(0, sliderstart + sliderlen, sbextent,
01370                                                         maxlen - sliderstart - sliderlen + fudge);
01371                                 break;
01372                         }
01373 
01374                         case SC_ScrollBarGroove: {
01375                                 int multi = threeButtonScrollBar ? 3 : 2;
01376                                 int fudge;
01377 
01378                                 if (platinumScrollBar)
01379                                         fudge = 0;
01380                                 else if (nextScrollBar)
01381                                         fudge = 2*sbextent;
01382                                 else
01383                                         fudge = sbextent;
01384 
01385                                 if (horizontal)
01386                                         ret.setRect(fudge, 0, sb->width() - sbextent * multi, sb->height());
01387                                 else
01388                                         ret.setRect(0, fudge, sb->width(), sb->height() - sbextent * multi);
01389                                 break;
01390                         }
01391 
01392                         case SC_ScrollBarSlider: {
01393                                 if (horizontal)
01394                                         ret.setRect(sliderstart, 0, sliderlen, sbextent);
01395                                 else
01396                                         ret.setRect(0, sliderstart, sbextent, sliderlen);
01397                                 break;
01398                         }
01399 
01400                         default:
01401                                 ret = QCommonStyle::querySubControlMetrics(control, widget, sc, opt);
01402                                 break;
01403                 }
01404         } else
01405                 ret = QCommonStyle::querySubControlMetrics(control, widget, sc, opt);
01406 
01407         return ret;
01408 }
01409 
01410 static const char * const kstyle_close_xpm[] = {
01411 "12 12 2 1",
01412 "# c #000000",
01413 ". c None",
01414 "............",
01415 "............",
01416 "..##....##..",
01417 "...##..##...",
01418 "....####....",
01419 ".....##.....",
01420 "....####....",
01421 "...##..##...",
01422 "..##....##..",
01423 "............",
01424 "............",
01425 "............"};
01426 
01427 static const char * const kstyle_maximize_xpm[]={
01428 "12 12 2 1",
01429 "# c #000000",
01430 ". c None",
01431 "............",
01432 "............",
01433 ".##########.",
01434 ".##########.",
01435 ".#........#.",
01436 ".#........#.",
01437 ".#........#.",
01438 ".#........#.",
01439 ".#........#.",
01440 ".#........#.",
01441 ".##########.",
01442 "............"};
01443 
01444 
01445 static const char * const kstyle_minimize_xpm[] = {
01446 "12 12 2 1",
01447 "# c #000000",
01448 ". c None",
01449 "............",
01450 "............",
01451 "............",
01452 "............",
01453 "............",
01454 "............",
01455 "............",
01456 "...######...",
01457 "...######...",
01458 "............",
01459 "............",
01460 "............"};
01461 
01462 static const char * const kstyle_normalizeup_xpm[] = {
01463 "12 12 2 1",
01464 "# c #000000",
01465 ". c None",
01466 "............",
01467 "...#######..",
01468 "...#######..",
01469 "...#.....#..",
01470 ".#######.#..",
01471 ".#######.#..",
01472 ".#.....#.#..",
01473 ".#.....###..",
01474 ".#.....#....",
01475 ".#.....#....",
01476 ".#######....",
01477 "............"};
01478 
01479 
01480 static const char * const kstyle_shade_xpm[] = {
01481 "12 12 2 1",
01482 "# c #000000",
01483 ". c None",
01484 "............",
01485 "............",
01486 "............",
01487 "............",
01488 "............",
01489 ".....#......",
01490 "....###.....",
01491 "...#####....",
01492 "..#######...",
01493 "............",
01494 "............",
01495 "............"};
01496 
01497 static const char * const kstyle_unshade_xpm[] = {
01498 "12 12 2 1",
01499 "# c #000000",
01500 ". c None",
01501 "............",
01502 "............",
01503 "............",
01504 "............",
01505 "..#######...",
01506 "...#####....",
01507 "....###.....",
01508 ".....#......",
01509 "............",
01510 "............",
01511 "............",
01512 "............"};
01513 
01514 static const char * dock_window_close_xpm[] = {
01515 "8 8 2 1",
01516 "# c #000000",
01517 ". c None",
01518 "##....##",
01519 ".##..##.",
01520 "..####..",
01521 "...##...",
01522 "..####..",
01523 ".##..##.",
01524 "##....##",
01525 "........"};
01526 
01527 // Message box icons, from page 210 of the Windows style guide.
01528 
01529 // Hand-drawn to resemble Microsoft's icons, but in the Mac/Netscape
01530 // palette.  The "question mark" icon, which Microsoft recommends not
01531 // using but a lot of people still use, is left out.
01532 
01533 /* XPM */
01534 static const char * const information_xpm[]={
01535 "32 32 5 1",
01536 ". c None",
01537 "c c #000000",
01538 "* c #999999",
01539 "a c #ffffff",
01540 "b c #0000ff",
01541 "...........********.............",
01542 "........***aaaaaaaa***..........",
01543 "......**aaaaaaaaaaaaaa**........",
01544 ".....*aaaaaaaaaaaaaaaaaa*.......",
01545 "....*aaaaaaaabbbbaaaaaaaac......",
01546 "...*aaaaaaaabbbbbbaaaaaaaac.....",
01547 "..*aaaaaaaaabbbbbbaaaaaaaaac....",
01548 ".*aaaaaaaaaaabbbbaaaaaaaaaaac...",
01549 ".*aaaaaaaaaaaaaaaaaaaaaaaaaac*..",
01550 "*aaaaaaaaaaaaaaaaaaaaaaaaaaaac*.",
01551 "*aaaaaaaaaabbbbbbbaaaaaaaaaaac*.",
01552 "*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
01553 "*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
01554 "*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
01555 "*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
01556 "*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
01557 ".*aaaaaaaaaaabbbbbaaaaaaaaaac***",
01558 ".*aaaaaaaaaaabbbbbaaaaaaaaaac***",
01559 "..*aaaaaaaaaabbbbbaaaaaaaaac***.",
01560 "...caaaaaaabbbbbbbbbaaaaaac****.",
01561 "....caaaaaaaaaaaaaaaaaaaac****..",
01562 ".....caaaaaaaaaaaaaaaaaac****...",
01563 "......ccaaaaaaaaaaaaaacc****....",
01564 ".......*cccaaaaaaaaccc*****.....",
01565 "........***cccaaaac*******......",
01566 "..........****caaac*****........",
01567 ".............*caaac**...........",
01568 "...............caac**...........",
01569 "................cac**...........",
01570 ".................cc**...........",
01571 "..................***...........",
01572 "...................**..........."};
01573 /* XPM */
01574 static const char* const warning_xpm[]={
01575 "32 32 4 1",
01576 ". c None",
01577 "a c #ffff00",
01578 "* c #000000",
01579 "b c #999999",
01580 ".............***................",
01581 "............*aaa*...............",
01582 "...........*aaaaa*b.............",
01583 "...........*aaaaa*bb............",
01584 "..........*aaaaaaa*bb...........",
01585 "..........*aaaaaaa*bb...........",
01586 ".........*aaaaaaaaa*bb..........",
01587 ".........*aaaaaaaaa*bb..........",
01588 "........*aaaaaaaaaaa*bb.........",
01589 "........*aaaa***aaaa*bb.........",
01590 ".......*aaaa*****aaaa*bb........",
01591 ".......*aaaa*****aaaa*bb........",
01592 "......*aaaaa*****aaaaa*bb.......",
01593 "......*aaaaa*****aaaaa*bb.......",
01594 ".....*aaaaaa*****aaaaaa*bb......",
01595 ".....*aaaaaa*****aaaaaa*bb......",
01596 "....*aaaaaaaa***aaaaaaaa*bb.....",
01597 "....*aaaaaaaa***aaaaaaaa*bb.....",
01598 "...*aaaaaaaaa***aaaaaaaaa*bb....",
01599 "...*aaaaaaaaaa*aaaaaaaaaa*bb....",
01600 "..*aaaaaaaaaaa*aaaaaaaaaaa*bb...",
01601 "..*aaaaaaaaaaaaaaaaaaaaaaa*bb...",
01602 ".*aaaaaaaaaaaa**aaaaaaaaaaa*bb..",
01603 ".*aaaaaaaaaaa****aaaaaaaaaa*bb..",
01604 "*aaaaaaaaaaaa****aaaaaaaaaaa*bb.",
01605 "*aaaaaaaaaaaaa**aaaaaaaaaaaa*bb.",
01606 "*aaaaaaaaaaaaaaaaaaaaaaaaaaa*bbb",
01607 "*aaaaaaaaaaaaaaaaaaaaaaaaaaa*bbb",
01608 ".*aaaaaaaaaaaaaaaaaaaaaaaaa*bbbb",
01609 "..*************************bbbbb",
01610 "....bbbbbbbbbbbbbbbbbbbbbbbbbbb.",
01611 ".....bbbbbbbbbbbbbbbbbbbbbbbbb.."};
01612 /* XPM */
01613 static const char* const critical_xpm[]={
01614 "32 32 4 1",
01615 ". c None",
01616 "a c #999999",
01617 "* c #ff0000",
01618 "b c #ffffff",
01619 "...........********.............",
01620 ".........************...........",
01621 ".......****************.........",
01622 "......******************........",
01623 ".....********************a......",
01624 "....**********************a.....",
01625 "...************************a....",
01626 "..*******b**********b*******a...",
01627 "..******bbb********bbb******a...",
01628 ".******bbbbb******bbbbb******a..",
01629 ".*******bbbbb****bbbbb*******a..",
01630 "*********bbbbb**bbbbb*********a.",
01631 "**********bbbbbbbbbb**********a.",
01632 "***********bbbbbbbb***********aa",
01633 "************bbbbbb************aa",
01634 "************bbbbbb************aa",
01635 "***********bbbbbbbb***********aa",
01636 "**********bbbbbbbbbb**********aa",
01637 "*********bbbbb**bbbbb*********aa",
01638 ".*******bbbbb****bbbbb*******aa.",
01639 ".******bbbbb******bbbbb******aa.",
01640 "..******bbb********bbb******aaa.",
01641 "..*******b**********b*******aa..",
01642 "...************************aaa..",
01643 "....**********************aaa...",
01644 "....a********************aaa....",
01645 ".....a******************aaa.....",
01646 "......a****************aaa......",
01647 ".......aa************aaaa.......",
01648 ".........aa********aaaaa........",
01649 "...........aaaaaaaaaaa..........",
01650 ".............aaaaaaa............"};
01651 
01652 QPixmap KStyle::stylePixmap( StylePixmap stylepixmap,
01653                                                   const QWidget* widget,
01654                                                   const QStyleOption& opt) const
01655 {
01656         switch (stylepixmap) {
01657                 case SP_TitleBarShadeButton:
01658                         return QPixmap(const_cast<const char**>(kstyle_shade_xpm));
01659                 case SP_TitleBarUnshadeButton:
01660                         return QPixmap(const_cast<const char**>(kstyle_unshade_xpm));
01661                 case SP_TitleBarNormalButton:
01662                         return QPixmap(const_cast<const char**>(kstyle_normalizeup_xpm));
01663                 case SP_TitleBarMinButton:
01664                         return QPixmap(const_cast<const char**>(kstyle_minimize_xpm));
01665                 case SP_TitleBarMaxButton:
01666                         return QPixmap(const_cast<const char**>(kstyle_maximize_xpm));
01667                 case SP_TitleBarCloseButton:
01668                         return QPixmap(const_cast<const char**>(kstyle_close_xpm));
01669                 case SP_DockWindowCloseButton:
01670                         return QPixmap(const_cast<const char**>(dock_window_close_xpm ));
01671                 case SP_MessageBoxInformation:
01672                         return QPixmap(const_cast<const char**>(information_xpm));
01673                 case SP_MessageBoxWarning:
01674                         return QPixmap(const_cast<const char**>(warning_xpm));
01675                 case SP_MessageBoxCritical:
01676                         return QPixmap(const_cast<const char**>(critical_xpm));
01677                 default:
01678                         break;
01679     }
01680     return QCommonStyle::stylePixmap(stylepixmap, widget, opt);
01681 }
01682 
01683 
01684 int KStyle::styleHint( StyleHint sh, const QWidget* w,
01685                                            const QStyleOption &opt, QStyleHintReturn* shr) const
01686 {
01687         switch (sh)
01688         {
01689                 case SH_EtchDisabledText:
01690                         return d->etchDisabledText ? 1 : 0;
01691 
01692                 case SH_PopupMenu_Scrollable:
01693                         return d->scrollablePopupmenus ? 1 : 0;
01694 
01695                 case SH_MenuBar_AltKeyNavigation:
01696                         return d->menuAltKeyNavigation ? 1 : 0;
01697 
01698                 case SH_PopupMenu_SubMenuPopupDelay:
01699                         return d->popupMenuDelay;
01700 
01701                 case SH_ItemView_ChangeHighlightOnFocus:
01702                 case SH_Slider_SloppyKeyEvents:
01703                 case SH_MainWindow_SpaceBelowMenuBar:
01704                         return 0;
01705 
01706                 case SH_Slider_SnapToValue:
01707                 case SH_PrintDialog_RightAlignButtons:
01708                 case SH_FontDialog_SelectAssociatedText:
01709                 case SH_PopupMenu_AllowActiveAndDisabled:
01710                 case SH_MenuBar_MouseTracking:
01711                 case SH_PopupMenu_MouseTracking:
01712                 case SH_ComboBox_ListMouseTracking:
01713                 case SH_ScrollBar_MiddleClickAbsolutePosition:
01714                         return 1;
01715 
01716                 default:
01717                         return QCommonStyle::styleHint(sh, w, opt, shr);
01718         }
01719 }
01720 
01721 
01722 bool KStyle::eventFilter( QObject* object, QEvent* event )
01723 {
01724         if ( d->useFilledFrameWorkaround )
01725         {
01726                 // Make the QMenuBar/QToolBar paintEvent() cover a larger area to
01727                 // ensure that the filled frame contents are properly painted.
01728                 // We essentially modify the paintEvent's rect to include the
01729                 // panel border, which also paints the widget's interior.
01730                 // This is nasty, but I see no other way to properly repaint
01731                 // filled frames in all QMenuBars and QToolBars.
01732                 // -- Karol.
01733                 if (event->type() == QEvent::Paint)
01734                 {
01735                         QMenuBar* menubar = 0;
01736                         QToolBar* toolbar = 0;
01737                         if (object->inherits("QMenuBar"))
01738                                 menubar = static_cast<QMenuBar*>(object);
01739                         else if (object->inherits("QToolBar"))
01740                                 toolbar = static_cast<QToolBar*>(object);
01741                         if ( menubar || toolbar )
01742                         {
01743                                 bool horizontal = true;
01744                                 QPaintEvent* pe = (QPaintEvent*)event;
01745                                 QFrame* frame   = (QFrame*)object;
01746                                 QRect r = pe->rect();
01747 
01748                                 if (toolbar && toolbar->orientation() == Qt::Vertical)
01749                                         horizontal = false;
01750 
01751                                 if (horizontal) {
01752                                         if ( r.height() == frame->height() )
01753                                                 return false;   // Let QFrame handle the painting now.
01754 
01755                                         // Else, send a new paint event with an updated paint rect.
01756                                         QPaintEvent dummyPE( QRect( r.x(), 0, r.width(), frame->height()) );
01757                                         QApplication::sendEvent( frame, &dummyPE );
01758                                 }
01759                                 else {  // Vertical
01760                                         if ( r.width() == frame->width() )
01761                                                 return false;
01762 
01763                                         QPaintEvent dummyPE( QRect( 0, r.y(), frame->width(), r.height()) );
01764                                         QApplication::sendEvent( frame, &dummyPE );
01765                                 }
01766 
01767                                 // Discard this event as we sent a new paintEvent.
01768                                 return true;
01769                         }
01770                 }
01771         }
01772 
01773         return false;
01774 }
01775 
01776 
01777 // -----------------------------------------------------------------------------
01778 // I N T E R N A L -  KStyle menu transparency handler
01779 // -----------------------------------------------------------------------------
01780 
01781 TransparencyHandler::TransparencyHandler( KStyle* style,
01782         TransparencyEngine tEngine, float menuOpacity, bool useDropShadow )
01783         : QObject()
01784 {
01785         te = tEngine;
01786         kstyle = style;
01787         opacity = menuOpacity;
01788         dropShadow = useDropShadow;
01789         pix.setOptimization(QPixmap::BestOptim);
01790 }
01791 
01792 TransparencyHandler::~TransparencyHandler()
01793 {
01794 }
01795 
01796 // This is meant to be ugly but fast.
01797 void TransparencyHandler::rightShadow(QImage& dst)
01798 {
01799         if (dst.depth() != 32)
01800                 dst = dst.convertDepth(32);
01801 
01802         // blend top-right corner.
01803         int pixels = dst.width() * dst.height();
01804 #ifdef WORDS_BIGENDIAN
01805         register unsigned char* data = dst.bits() + 1;  // Skip alpha
01806 #else
01807         register unsigned char* data = dst.bits();              // Skip alpha
01808 #endif
01809         for(register int i = 0; i < 16; i++) {
01810                 *data++ = (unsigned char)((*data)*top_right_corner[i]);
01811                 *data++ = (unsigned char)((*data)*top_right_corner[i]);
01812                 *data++ = (unsigned char)((*data)*top_right_corner[i]);
01813                 data++; // skip alpha
01814         }
01815 
01816         pixels -= 32;   // tint right strip without rounded edges.
01817         register int c = 0;
01818         for(register int i = 0; i < pixels; i++) {
01819                 *data++ = (unsigned char)((*data)*shadow_strip[c]);
01820                 *data++ = (unsigned char)((*data)*shadow_strip[c]);
01821                 *data++ = (unsigned char)((*data)*shadow_strip[c]);
01822                 data++; // skip alpha
01823                 c = ++c % 4;
01824         }
01825 
01826         // tint bottom edge
01827         for(register int i = 0; i < 16; i++) {
01828                 *data++ = (unsigned char)((*data)*bottom_right_corner[i]);
01829                 *data++ = (unsigned char)((*data)*bottom_right_corner[i]);
01830                 *data++ = (unsigned char)((*data)*bottom_right_corner[i]);
01831                 data++; // skip alpha
01832         }
01833 }
01834 
01835 void TransparencyHandler::bottomShadow(QImage& dst)
01836 {
01837         if (dst.depth() != 32)
01838                 dst = dst.convertDepth(32);
01839 
01840         int line = 0;
01841         int width = dst.width() - 4;
01842         double strip_data = shadow_strip[0];
01843         double* corner = const_cast<double*>(bottom_left_corner);
01844 
01845 #ifdef WORDS_BIGENDIAN
01846         register unsigned char* data = dst.bits() + 1;  // Skip alpha
01847 #else
01848         register unsigned char* data = dst.bits();      // Skip alpha
01849 #endif
01850 
01851         for(int y = 0; y < 4; y++)
01852         {
01853                 // Bottom-left Corner
01854                 for(register int x = 0; x < 4; x++) {
01855                         *data++ = (unsigned char)((*data)*(*corner));
01856                         *data++ = (unsigned char)((*data)*(*corner));
01857                         *data++ = (unsigned char)((*data)*(*corner));
01858                         data++; // skip alpha
01859                         corner++;
01860                 }
01861 
01862                 // Scanline
01863                 for(register int x = 0; x < width; x++) {
01864                         *data++ = (unsigned char)((*data)*strip_data);
01865                         *data++ = (unsigned char)((*data)*strip_data);
01866                         *data++ = (unsigned char)((*data)*strip_data);
01867                         data++;
01868                 }
01869 
01870                 strip_data = shadow_strip[++line];
01871         }
01872 }
01873 
01874 // Create a shadow of thickness 4.
01875 void TransparencyHandler::createShadowWindows(const QPopupMenu* p)
01876 {
01877         int x2 = p->x()+p->width();
01878         int y2 = p->y()+p->height();
01879         QRect shadow1(x2, p->y() + 4, 4, p->height());
01880         QRect shadow2(p->x() + 4, y2, p->width() - 4, 4);
01881 
01882         // Create a fake drop-down shadow effect via blended Xwindows
01883         ShadowElements se;
01884         se.w1 = new QWidget(0, 0, WStyle_Customize | WType_Popup | WX11BypassWM );
01885         se.w2 = new QWidget(0, 0, WStyle_Customize | WType_Popup | WX11BypassWM );
01886         se.w1->setGeometry(shadow1);
01887         se.w2->setGeometry(shadow2);
01888         XSelectInput(qt_xdisplay(), se.w1->winId(), StructureNotifyMask );
01889         XSelectInput(qt_xdisplay(), se.w2->winId(), StructureNotifyMask );
01890 
01891         // Insert a new ShadowMap entry
01892         shadowMap()[p] = se;
01893 
01894         // Some hocus-pocus here to create the drop-shadow.
01895         QPixmap pix_shadow1 = QPixmap::grabWindow(qt_xrootwin(),
01896                         shadow1.x(), shadow1.y(), shadow1.width(), shadow1.height());
01897         QPixmap pix_shadow2 = QPixmap::grabWindow(qt_xrootwin(),
01898                         shadow2.x(), shadow2.y(), shadow2.width(), shadow2.height());
01899 
01900         QImage img;
01901         img = pix_shadow1.convertToImage();
01902         rightShadow(img);
01903         pix_shadow1.convertFromImage(img);
01904         img = pix_shadow2.convertToImage();
01905         bottomShadow(img);
01906         pix_shadow2.convertFromImage(img);
01907 
01908         // Set the background pixmaps
01909         se.w1->setErasePixmap(pix_shadow1);
01910         se.w2->setErasePixmap(pix_shadow2);
01911 
01912         // Show the 'shadow' just before showing the popup menu window
01913         // Don't use QWidget::show() so we don't confuse QEffects, thus causing broken focus.
01914         XMapWindow(qt_xdisplay(), se.w1->winId());
01915         XMapWindow(qt_xdisplay(), se.w2->winId());
01916 }
01917 
01918 void TransparencyHandler::removeShadowWindows(const QPopupMenu* p)
01919 {
01920         ShadowMap::iterator it = shadowMap().find(p);
01921         if (it != shadowMap().end())
01922         {
01923                 ShadowElements se = it.data();
01924                 XUnmapWindow(qt_xdisplay(), se.w1->winId());    // hide
01925                 XUnmapWindow(qt_xdisplay(), se.w2->winId());
01926                 XFlush(qt_xdisplay());                                                  // try to hide faster
01927                 delete se.w1;
01928                 delete se.w2;
01929                 shadowMap().erase(it);
01930         }
01931 }
01932 
01933 bool TransparencyHandler::eventFilter( QObject* object, QEvent* event )
01934 {
01935         // Transparency idea was borrowed from KDE2's "MegaGradient" Style,
01936         // Copyright (C) 2000 Daniel M. Duley <mosfet@kde.org>
01937 
01938         // Added 'fake' menu shadows <04-Jul-2002> -- Karol
01939         QPopupMenu* p = (QPopupMenu*)object;
01940         QEvent::Type et = event->type();
01941 
01942         if (et == QEvent::Show)
01943         {
01944                 // Handle translucency
01945                 if (te != Disabled)
01946                 {
01947                         pix = QPixmap::grabWindow(qt_xrootwin(),
01948                                         p->x(), p->y(), p->width(), p->height());
01949 
01950                         switch (te) {
01951 #ifdef HAVE_XRENDER
01952                                 case XRender:
01953                                         if (qt_use_xrender) {
01954                                                 XRenderBlendToPixmap(p);
01955                                                 break;
01956                                         }
01957                                         // Fall through intended
01958 #else
01959                                 case XRender:
01960 #endif
01961                                 case SoftwareBlend:
01962                                         blendToPixmap(p->colorGroup(), p);
01963                                         break;
01964 
01965                                 case SoftwareTint:
01966                                 default:
01967                                         blendToColor(p->colorGroup().button());
01968                         };
01969 
01970                         p->setErasePixmap(pix);
01971                 }
01972 
01973                 // Handle drop shadow
01974                 // * FIXME : !shadowMap().contains(p) is a workaround for leftover
01975                 // * shadows after duplicate show events.
01976                 // * TODO : determine real cause for duplicate events
01977                 // * till 20021005
01978                 if (dropShadow && p->width() > 16 && p->height() > 16 && !shadowMap().contains( p ))
01979                         createShadowWindows(p);
01980         }
01981         else if (et == QEvent::Hide)
01982         {
01983                 // Handle drop shadow
01984                 if (dropShadow)
01985                         removeShadowWindows(p);
01986 
01987                 // Handle translucency
01988                 if (te != Disabled)
01989                         p->setErasePixmap(QPixmap());
01990         }
01991 
01992         return false;
01993 }
01994 
01995 
01996 // Blends a QImage to a predefined color, with a given opacity.
01997 void TransparencyHandler::blendToColor(const QColor &col)
01998 {
01999         if (opacity < 0.0 || opacity > 1.0)
02000                 return;
02001 
02002         QImage img = pix.convertToImage();
02003         KImageEffect::blend(col, img, opacity);
02004         pix.convertFromImage(img);
02005 }
02006 
02007 
02008 void TransparencyHandler::blendToPixmap(const QColorGroup &cg, const QPopupMenu* p)
02009 {
02010         if (opacity < 0.0 || opacity > 1.0)
02011                 return;
02012 
02013         KPixmap blendPix;
02014         blendPix.resize( pix.width(), pix.height() );
02015 
02016         if (blendPix.width()  != pix.width() ||
02017                 blendPix.height() != pix.height())
02018                 return;
02019 
02020         // Allow styles to define the blend pixmap - allows for some interesting effects.
02021         kstyle->renderMenuBlendPixmap( blendPix, cg, p );
02022 
02023         QImage blendImg = blendPix.convertToImage();
02024         QImage backImg  = pix.convertToImage();
02025         KImageEffect::blend(blendImg, backImg, opacity);
02026         pix.convertFromImage(backImg);
02027 }
02028 
02029 
02030 #ifdef HAVE_XRENDER
02031 // Here we go, use XRender in all its glory.
02032 // NOTE: This is actually a bit slower than the above routines
02033 // on non-accelerated displays. -- Karol.
02034 void TransparencyHandler::XRenderBlendToPixmap(const QPopupMenu* p)
02035 {
02036         KPixmap renderPix;
02037         renderPix.resize( pix.width(), pix.height() );
02038 
02039         // Allow styles to define the blend pixmap - allows for some interesting effects.
02040         kstyle->renderMenuBlendPixmap( renderPix, p->colorGroup(), p );
02041 
02042         Display* dpy = qt_xdisplay();
02043         Pixmap   alphaPixmap;
02044         Picture  alphaPicture;
02045         XRenderPictFormat        Rpf;
02046         XRenderPictureAttributes Rpa;
02047         XRenderColor clr;
02048         clr.alpha = ((unsigned short)(255*opacity) << 8);
02049 
02050         Rpf.type  = PictTypeDirect;
02051         Rpf.depth = 8;
02052         Rpf.direct.alphaMask = 0xff;
02053         Rpa.repeat = True;      // Tile
02054 
02055         XRenderPictFormat* xformat = XRenderFindFormat(dpy,
02056                 PictFormatType | PictFormatDepth | PictFormatAlphaMask, &Rpf, 0);
02057 
02058         alphaPixmap = XCreatePixmap(dpy, p->handle(), 1, 1, 8);
02059         alphaPicture = XRenderCreatePicture(dpy, alphaPixmap, xformat, CPRepeat, &Rpa);
02060 
02061         XRenderFillRectangle(dpy, PictOpSrc, alphaPicture, &clr, 0, 0, 1, 1);
02062 
02063         XRenderComposite(dpy, PictOpOver,
02064                         renderPix.x11RenderHandle(), alphaPicture, pix.x11RenderHandle(), // src, mask, dst
02065                         0, 0,   // srcx,  srcy
02066                         0, 0,   // maskx, masky
02067                         0, 0,   // dstx,  dsty
02068                         pix.width(), pix.height());
02069 
02070         XRenderFreePicture(dpy, alphaPicture);
02071         XFreePixmap(dpy, alphaPixmap);
02072 }
02073 #endif
02074 
02075 void KStyle::virtual_hook( int, void* )
02076 { /*BASE::virtual_hook( id, data );*/ }
02077 
02078 // vim: set noet ts=4 sw=4:
02079 
02080 #include "kstyle.moc"
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