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kdefx

kstyle.cpp

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/*
 *
 * KStyle
 * Copyright (C) 2001-2002 Karol Szwed <gallium@kde.org>
 *
 * QWindowsStyle CC_ListView and style images were kindly donated by TrollTech,
 * Copyright (C) 1998-2000 TrollTech AS.
 *
 * Many thanks to Bradley T. Hughes for the 3 button scrollbar code.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License version 2 as published by the Free Software Foundation.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "kstyle.h"

#include <qapplication.h>
#include <qbitmap.h>
#include <qcleanuphandler.h>
#include <qmap.h>
#include <qimage.h>
#include <qlistview.h>
#include <qmenubar.h>
#include <qpainter.h>
#include <qpixmap.h>
#include <qpopupmenu.h>
#include <qprogressbar.h>
#include <qscrollbar.h>
#include <qsettings.h>
#include <qslider.h>
#include <qstylefactory.h>
#include <qtabbar.h>
#include <qtoolbar.h>

#include <kpixmap.h>
#include <kpixmapeffect.h>
#include <kimageeffect.h>

#ifdef Q_WS_X11
# include <X11/Xlib.h>
# ifdef HAVE_XRENDER
#  include <X11/extensions/Xrender.h> // schroder
   extern bool qt_use_xrender;
# endif
#else
#undef HAVE_XRENDER
#endif


#include <limits.h>

namespace
{
    // INTERNAL
    enum TransparencyEngine {
        Disabled = 0,
        SoftwareTint,
        SoftwareBlend,
        XRender
    };

    // Drop Shadow
    struct ShadowElements {
        QWidget* w1;
        QWidget* w2;
    };
    typedef QMap<const QPopupMenu*,ShadowElements> ShadowMap;
        static ShadowMap *_shadowMap = 0;
        QSingleCleanupHandler<ShadowMap> cleanupShadowMap;
        ShadowMap &shadowMap() {
        if ( !_shadowMap ) {
        _shadowMap = new ShadowMap;
        cleanupShadowMap.set( &_shadowMap );
        }
        return *_shadowMap;
    }


    // DO NOT ASK ME HOW I MADE THESE TABLES!
    // (I probably won't remember anyway ;)
    const double top_right_corner[16] =
        { 0.949, 0.965, 0.980, 0.992,
          0.851, 0.890, 0.945, 0.980,
          0.706, 0.780, 0.890, 0.960,
          0.608, 0.706, 0.851, 0.949 };

    const double bottom_right_corner[16] =
        { 0.608, 0.706, 0.851, 0.949,
          0.706, 0.780, 0.890, 0.960,
          0.851, 0.890, 0.945, 0.980,
          0.949, 0.965, 0.980, 0.992 };

    const double bottom_left_corner[16] =
        { 0.949, 0.851, 0.706, 0.608,
          0.965, 0.890, 0.780, 0.706,
          0.980, 0.945, 0.890, 0.851,
          0.992, 0.980, 0.960, 0.949 };

    const double shadow_strip[4] =
        { 0.565, 0.675, 0.835, 0.945 };
}


namespace
{
class TransparencyHandler : public QObject
{
    public:
        TransparencyHandler(KStyle* style, TransparencyEngine tEngine,
                            float menuOpacity, bool useDropShadow);
        ~TransparencyHandler();
        bool eventFilter(QObject* object, QEvent* event);

    protected:
        void blendToColor(const QColor &col);
        void blendToPixmap(const QColorGroup &cg, const QPopupMenu* p);
#ifdef HAVE_XRENDER
        void XRenderBlendToPixmap(const QPopupMenu* p);
#endif
        void createShadowWindows(const QPopupMenu* p);
        void removeShadowWindows(const QPopupMenu* p);
        void rightShadow(QImage& dst);
        void bottomShadow(QImage& dst);
    private:
        bool    dropShadow;
        float   opacity;
        QPixmap pix;
        KStyle* kstyle;
        TransparencyEngine te;
};
} // namespace

struct KStylePrivate
{
    bool  highcolor                : 1;
    bool  useFilledFrameWorkaround : 1;
    bool  etchDisabledText         : 1;
    bool  scrollablePopupmenus     : 1;
    bool  menuAltKeyNavigation     : 1;
    bool  menuDropShadow           : 1;
    bool  sloppySubMenus           : 1;
    int   popupMenuDelay;
    float menuOpacity;

    TransparencyEngine   transparencyEngine;
    KStyle::KStyleScrollBarType  scrollbarType;
    TransparencyHandler* menuHandler;
    KStyle::KStyleFlags flags;
    
    //For KPE_ListViewBranch
    QBitmap *verticalLine;
    QBitmap *horizontalLine;
};

// -----------------------------------------------------------------------------


KStyle::KStyle( KStyleFlags flags, KStyleScrollBarType sbtype )
    : QCommonStyle(), d(new KStylePrivate)
{
    d->flags = flags;
    bool useMenuTransparency    = (flags & AllowMenuTransparency);
    d->useFilledFrameWorkaround = (flags & FilledFrameWorkaround);
    d->scrollbarType = sbtype;
    d->highcolor = QPixmap::defaultDepth() > 8;

    // Read style settings
    QSettings settings;
    d->popupMenuDelay       = settings.readNumEntry ("/KStyle/Settings/PopupMenuDelay", 256);
    d->sloppySubMenus       = settings.readBoolEntry("/KStyle/Settings/SloppySubMenus", false);
    d->etchDisabledText     = settings.readBoolEntry("/KStyle/Settings/EtchDisabledText", true);
    d->menuAltKeyNavigation = settings.readBoolEntry("/KStyle/Settings/MenuAltKeyNavigation", true);
    d->scrollablePopupmenus = settings.readBoolEntry("/KStyle/Settings/ScrollablePopupMenus", false);
    d->menuDropShadow       = settings.readBoolEntry("/KStyle/Settings/MenuDropShadow", false);
    d->menuHandler = NULL;

    if (useMenuTransparency) {
        QString effectEngine = settings.readEntry("/KStyle/Settings/MenuTransparencyEngine", "Disabled");

#ifdef HAVE_XRENDER
        if (effectEngine == "XRender")
            d->transparencyEngine = XRender;
#else
        if (effectEngine == "XRender")
            d->transparencyEngine = SoftwareBlend;
#endif
        else if (effectEngine == "SoftwareBlend")
            d->transparencyEngine = SoftwareBlend;
        else if (effectEngine == "SoftwareTint")
            d->transparencyEngine = SoftwareTint;
        else
            d->transparencyEngine = Disabled;

        if (d->transparencyEngine != Disabled) {
            // Create an instance of the menu transparency handler
            d->menuOpacity = settings.readDoubleEntry("/KStyle/Settings/MenuOpacity", 0.90);
            d->menuHandler = new TransparencyHandler(this, d->transparencyEngine,
                                                     d->menuOpacity, d->menuDropShadow);
        }
    }
    
    d->verticalLine   = 0;
    d->horizontalLine = 0;

    // Create a transparency handler if only drop shadows are enabled.
    if (!d->menuHandler && d->menuDropShadow)
        d->menuHandler = new TransparencyHandler(this, Disabled, 1.0, d->menuDropShadow);
}


KStyle::~KStyle()
{
    delete d->verticalLine;
    delete d->horizontalLine;

    delete d->menuHandler;

    d->menuHandler = NULL;
    delete d;
}


QString KStyle::defaultStyle()
{
    if (QPixmap::defaultDepth() > 8)
       return QString("plastik");
    else
       return QString("light, 3rd revision");
}


void KStyle::polish( QWidget* widget )
{
    if ( d->useFilledFrameWorkaround )
    {
        if ( QFrame *frame = ::qt_cast< QFrame* >( widget ) ) {
            QFrame::Shape shape = frame->frameShape();
            if (shape == QFrame::ToolBarPanel || shape == QFrame::MenuBarPanel)
                widget->installEventFilter(this);
        } 
    }
}


void KStyle::unPolish( QWidget* widget )
{
    if ( d->useFilledFrameWorkaround )
    {
        if ( QFrame *frame = ::qt_cast< QFrame* >( widget ) ) {
            QFrame::Shape shape = frame->frameShape();
            if (shape == QFrame::ToolBarPanel || shape == QFrame::MenuBarPanel)
                widget->removeEventFilter(this);
        } 
    }
}


// Style changes (should) always re-polish popups.
void KStyle::polishPopupMenu( QPopupMenu* p )
{
    if (!p->testWState( WState_Polished ))
        p->setCheckable(true);

    // Install transparency handler if the effect is enabled.
    if ( d->menuHandler &&
        (strcmp(p->name(), "tear off menu") != 0))
            p->installEventFilter(d->menuHandler);
}


// -----------------------------------------------------------------------------
// KStyle extensions
// -----------------------------------------------------------------------------

void KStyle::setScrollBarType(KStyleScrollBarType sbtype)
{
    d->scrollbarType = sbtype;
}

KStyle::KStyleFlags KStyle::styleFlags() const
{
    return d->flags;
}

void KStyle::renderMenuBlendPixmap( KPixmap &pix, const QColorGroup &cg,
    const QPopupMenu* /* popup */ ) const
{
    pix.fill(cg.button());  // Just tint as the default behavior
}


void KStyle::drawKStylePrimitive( KStylePrimitive kpe,
                                  QPainter* p,
                                  const QWidget* widget,
                                  const QRect &r,
                                  const QColorGroup &cg,
                                  SFlags flags,
                                  const QStyleOption& /* opt */ ) const
{
    switch( kpe )
    {
        // Dock / Toolbar / General handles.
        // ---------------------------------

        case KPE_DockWindowHandle: {

            // Draws a nice DockWindow handle including the dock title.
            QWidget* wid = const_cast<QWidget*>(widget);
            bool horizontal = flags & Style_Horizontal;
            int x,y,w,h,x2,y2;

            r.rect( &x, &y, &w, &h );
            if ((w <= 2) || (h <= 2)) {
                p->fillRect(r, cg.highlight());
                return;
            }

            
            x2 = x + w - 1;
            y2 = y + h - 1;

            QFont fnt;
            fnt = QApplication::font(wid);
            fnt.setPointSize( fnt.pointSize()-2 );

            // Draw the item on an off-screen pixmap
            // to preserve Xft antialiasing for
            // vertically oriented handles.
            QPixmap pix;
            if (horizontal)
                pix.resize( h-2, w-2 );
            else
                pix.resize( w-2, h-2 );

            QString title = wid->parentWidget()->caption();
            QPainter p2;
            p2.begin(&pix);
            p2.fillRect(pix.rect(), cg.brush(QColorGroup::Highlight));
            p2.setPen(cg.highlightedText());
            p2.setFont(fnt);
            p2.drawText(pix.rect(), AlignCenter, title);
            p2.end();

            // Draw a sunken bevel
            p->setPen(cg.dark());
            p->drawLine(x, y, x2, y);
            p->drawLine(x, y, x, y2);
            p->setPen(cg.light());
            p->drawLine(x+1, y2, x2, y2);
            p->drawLine(x2, y+1, x2, y2);

            if (horizontal) {
                QWMatrix m;
                m.rotate(-90.0);
                QPixmap vpix = pix.xForm(m);
                bitBlt(wid, r.x()+1, r.y()+1, &vpix);
            } else
                bitBlt(wid, r.x()+1, r.y()+1, &pix);

            break;
        }


        /*
         * KPE_ListViewExpander and KPE_ListViewBranch are based on code from
         * QWindowStyle's CC_ListView, kindly donated by TrollTech.
         * CC_ListView code is Copyright (C) 1998-2000 TrollTech AS.
         */

        case KPE_ListViewExpander: {
            // Typical Windows style expand/collapse element.
            int radius = (r.width() - 4) / 2;
            int centerx = r.x() + r.width()/2;
            int centery = r.y() + r.height()/2;

            // Outer box
            p->setPen( cg.mid() );
            p->drawRect( r );

            // plus or minus
            p->setPen( cg.text() );
            p->drawLine( centerx - radius, centery, centerx + radius, centery );
            if ( flags & Style_On ) // Collapsed = On
                p->drawLine( centerx, centery - radius, centerx, centery + radius );
            break;
        }

        case KPE_ListViewBranch: {
            // Typical Windows style listview branch element (dotted line).

            // Create the dotline pixmaps if not already created
            if ( !d->verticalLine )
            {
                // make 128*1 and 1*128 bitmaps that can be used for
                // drawing the right sort of lines.
                d->verticalLine   = new QBitmap( 1, 129, true );
                d->horizontalLine = new QBitmap( 128, 1, true );
                QPointArray a( 64 );
                QPainter p2;
                p2.begin( d->verticalLine );

                int i;
                for( i=0; i < 64; i++ )
                    a.setPoint( i, 0, i*2+1 );
                p2.setPen( color1 );
                p2.drawPoints( a );
                p2.end();
                QApplication::flushX();
                d->verticalLine->setMask( *d->verticalLine );

                p2.begin( d->horizontalLine );
                for( i=0; i < 64; i++ )
                    a.setPoint( i, i*2+1, 0 );
                p2.setPen( color1 );
                p2.drawPoints( a );
                p2.end();
                QApplication::flushX();
                d->horizontalLine->setMask( *d->horizontalLine );
            }

            p->setPen( cg.text() );     // cg.dark() is bad for dark color schemes.

            if (flags & Style_Horizontal)
            {
                int point = r.x();
                int other = r.y();
                int end = r.x()+r.width();
                int thickness = r.height();

                while( point < end )
                {
                    int i = 128;
                    if ( i+point > end )
                        i = end-point;
                    p->drawPixmap( point, other, *d->horizontalLine, 0, 0, i, thickness );
                    point += i;
                }

            } else {
                int point = r.y();
                int other = r.x();
                int end = r.y()+r.height();
                int thickness = r.width();
                int pixmapoffset = (flags & Style_NoChange) ? 0 : 1;    // ### Hackish

                while( point < end )
                {
                    int i = 128;
                    if ( i+point > end )
                        i = end-point;
                    p->drawPixmap( other, point, *d->verticalLine, 0, pixmapoffset, thickness, i );
                    point += i;
                }
            }

            break;
        }

        // Reimplement the other primitives in your styles.
        // The current implementation just paints something visibly different.
        case KPE_ToolBarHandle:
        case KPE_GeneralHandle:
        case KPE_SliderHandle:
            p->fillRect(r, cg.light());
            break;

        case KPE_SliderGroove:
            p->fillRect(r, cg.dark());
            break;

        default:
            p->fillRect(r, Qt::yellow); // Something really bad happened - highlight.
            break;
    }
}


int KStyle::kPixelMetric( KStylePixelMetric kpm, const QWidget* /* widget */) const
{
    int value;
    switch(kpm)
    {
        case KPM_ListViewBranchThickness:
            value = 1;
            break;

        case KPM_MenuItemSeparatorHeight:
        case KPM_MenuItemHMargin:
        case KPM_MenuItemVMargin:
        case KPM_MenuItemHFrame:
        case KPM_MenuItemVFrame:
        case KPM_MenuItemCheckMarkHMargin:
        case KPM_MenuItemArrowHMargin:
        case KPM_MenuItemTabSpacing:
        default:
            value = 0;
    }

    return value;
}


// -----------------------------------------------------------------------------

void KStyle::drawPrimitive( PrimitiveElement pe,
                            QPainter* p,
                            const QRect &r,
                            const QColorGroup &cg,
                            SFlags flags,
                            const QStyleOption& opt ) const
{
    // TOOLBAR/DOCK WINDOW HANDLE
    // ------------------------------------------------------------------------
    if (pe == PE_DockWindowHandle)
    {
        // Wild workarounds are here. Beware.
        QWidget *widget, *parent;

        if (p && p->device()->devType() == QInternal::Widget) {
            widget = static_cast<QWidget*>(p->device());
            parent = widget->parentWidget();
        } else
            return;     // Don't paint on non-widgets

        // Check if we are a normal toolbar or a hidden dockwidget.
        if ( parent &&
            (parent->inherits("QToolBar") ||        // Normal toolbar
            (parent->inherits("QMainWindow")) ))    // Collapsed dock

            // Draw a toolbar handle
            drawKStylePrimitive( KPE_ToolBarHandle, p, widget, r, cg, flags, opt );

        else if ( widget->inherits("QDockWindowHandle") )

            // Draw a dock window handle
            drawKStylePrimitive( KPE_DockWindowHandle, p, widget, r, cg, flags, opt );

        else
            // General handle, probably a kicker applet handle.
            drawKStylePrimitive( KPE_GeneralHandle, p, widget, r, cg, flags, opt );

    } else
        QCommonStyle::drawPrimitive( pe, p, r, cg, flags, opt );
}



void KStyle::drawControl( ControlElement element,
                          QPainter* p,
                          const QWidget* widget,
                          const QRect &r,
                          const QColorGroup &cg,
                          SFlags flags,
                          const QStyleOption &opt ) const
{
    switch (element)
    {
        // TABS
        // ------------------------------------------------------------------------
        case CE_TabBarTab: {
            const QTabBar* tb  = (const QTabBar*) widget;
            QTabBar::Shape tbs = tb->shape();
            bool selected      = flags & Style_Selected;
            int x = r.x(), y=r.y(), bottom=r.bottom(), right=r.right();

            switch (tbs) {

                case QTabBar::RoundedAbove: {
                    if (!selected)
                        p->translate(0,1);
                    p->setPen(selected ? cg.light() : cg.shadow());
                    p->drawLine(x, y+4, x, bottom);
                    p->drawLine(x, y+4, x+4, y);
                    p->drawLine(x+4, y, right-1, y);
                    if (selected)
                        p->setPen(cg.shadow());
                    p->drawLine(right, y+1, right, bottom);

                    p->setPen(cg.midlight());
                    p->drawLine(x+1, y+4, x+1, bottom);
                    p->drawLine(x+1, y+4, x+4, y+1);
                    p->drawLine(x+5, y+1, right-2, y+1);

                    if (selected) {
                        p->setPen(cg.mid());
                        p->drawLine(right-1, y+1, right-1, bottom);
                    } else {
                        p->setPen(cg.mid());
                        p->drawPoint(right-1, y+1);
                        p->drawLine(x+4, y+2, right-1, y+2);
                        p->drawLine(x+3, y+3, right-1, y+3);
                        p->fillRect(x+2, y+4, r.width()-3, r.height()-6, cg.mid());

                        p->setPen(cg.light());
                        p->drawLine(x, bottom-1, right, bottom-1);
                        p->translate(0,-1);
                    }
                    break;
                }

                case QTabBar::RoundedBelow: {
                    if (!selected)
                        p->translate(0,-1);
                    p->setPen(selected ? cg.light() : cg.shadow());
                    p->drawLine(x, bottom-4, x, y);
                    if (selected)
                        p->setPen(cg.mid());
                    p->drawLine(x, bottom-4, x+4, bottom);
                    if (selected)
                        p->setPen(cg.shadow());
                    p->drawLine(x+4, bottom, right-1, bottom);
                    p->drawLine(right, bottom-1, right, y);

                    p->setPen(cg.midlight());
                    p->drawLine(x+1, bottom-4, x+1, y);
                    p->drawLine(x+1, bottom-4, x+4, bottom-1);
                    p->drawLine(x+5, bottom-1, right-2, bottom-1);

                    if (selected) {
                        p->setPen(cg.mid());
                        p->drawLine(right-1, y, right-1, bottom-1);
                    } else {
                        p->setPen(cg.mid());
                        p->drawPoint(right-1, bottom-1);
                        p->drawLine(x+4, bottom-2, right-1, bottom-2);
                        p->drawLine(x+3, bottom-3, right-1, bottom-3);
                        p->fillRect(x+2, y+2, r.width()-3, r.height()-6, cg.mid());
                        p->translate(0,1);
                        p->setPen(cg.dark());
                        p->drawLine(x, y, right, y);
                    }
                    break;
                }

                case QTabBar::TriangularAbove: {
                    if (!selected)
                        p->translate(0,1);
                    p->setPen(selected ? cg.light() : cg.shadow());
                    p->drawLine(x, bottom, x, y+6);
                    p->drawLine(x, y+6, x+6, y);
                    p->drawLine(x+6, y, right-6, y);
                    if (selected)
                        p->setPen(cg.mid());
                    p->drawLine(right-5, y+1, right-1, y+5);
                    p->setPen(cg.shadow());
                    p->drawLine(right, y+6, right, bottom);

                    p->setPen(cg.midlight());
                    p->drawLine(x+1, bottom, x+1, y+6);
                    p->drawLine(x+1, y+6, x+6, y+1);
                    p->drawLine(x+6, y+1, right-6, y+1);
                    p->drawLine(right-5, y+2, right-2, y+5);
                    p->setPen(cg.mid());
                    p->drawLine(right-1, y+6, right-1, bottom);

                    QPointArray a(6);
                    a.setPoint(0, x+2, bottom);
                    a.setPoint(1, x+2, y+7);
                    a.setPoint(2, x+7, y+2);
                    a.setPoint(3, right-7, y+2);
                    a.setPoint(4, right-2, y+7);
                    a.setPoint(5, right-2, bottom);
                    p->setPen  (selected ? cg.background() : cg.mid());
                    p->setBrush(selected ? cg.background() : cg.mid());
                    p->drawPolygon(a);
                    p->setBrush(NoBrush);
                    if (!selected) {
                        p->translate(0,-1);
                        p->setPen(cg.light());
                        p->drawLine(x, bottom, right, bottom);
                    }
                    break;
                }

                default: { // QTabBar::TriangularBelow
                    if (!selected)
                        p->translate(0,-1);
                    p->setPen(selected ? cg.light() : cg.shadow());
                    p->drawLine(x, y, x, bottom-6);
                    if (selected)
                        p->setPen(cg.mid());
                    p->drawLine(x, bottom-6, x+6, bottom);
                    if (selected)
                        p->setPen(cg.shadow());
                    p->drawLine(x+6, bottom, right-6, bottom);
                    p->drawLine(right-5, bottom-1, right-1, bottom-5);
                    if (!selected)
                        p->setPen(cg.shadow());
                    p->drawLine(right, bottom-6, right, y);

                    p->setPen(cg.midlight());
                    p->drawLine(x+1, y, x+1, bottom-6);
                    p->drawLine(x+1, bottom-6, x+6, bottom-1);
                    p->drawLine(x+6, bottom-1, right-6, bottom-1);
                    p->drawLine(right-5, bottom-2, right-2, bottom-5);
                    p->setPen(cg.mid());
                    p->drawLine(right-1, bottom-6, right-1, y);

                    QPointArray a(6);
                    a.setPoint(0, x+2, y);
                    a.setPoint(1, x+2, bottom-7);
                    a.setPoint(2, x+7, bottom-2);
                    a.setPoint(3, right-7, bottom-2);
                    a.setPoint(4, right-2, bottom-7);
                    a.setPoint(5, right-2, y);
                    p->setPen  (selected ? cg.background() : cg.mid());
                    p->setBrush(selected ? cg.background() : cg.mid());
                    p->drawPolygon(a);
                    p->setBrush(NoBrush);
                    if (!selected) {
                        p->translate(0,1);
                        p->setPen(cg.dark());
                        p->drawLine(x, y, right, y);
                    }
                    break;
                }
            };

            break;
        }
        
        // Popup menu scroller
        // ------------------------------------------------------------------------
        case CE_PopupMenuScroller: {
            p->fillRect(r, cg.background());
            drawPrimitive(PE_ButtonTool, p, r, cg, Style_Enabled);
            drawPrimitive((flags & Style_Up) ? PE_ArrowUp : PE_ArrowDown, p, r, cg, Style_Enabled);
            break;
        }


        // PROGRESSBAR
        // ------------------------------------------------------------------------
        case CE_ProgressBarGroove: {
            QRect fr = subRect(SR_ProgressBarGroove, widget);
            drawPrimitive(PE_Panel, p, fr, cg, Style_Sunken, QStyleOption::Default);
            break;
        }

        case CE_ProgressBarContents: {
            // ### Take into account totalSteps() for busy indicator
            const QProgressBar* pb = (const QProgressBar*)widget;
            QRect cr = subRect(SR_ProgressBarContents, widget);
            double progress = pb->progress();
            bool reverse = QApplication::reverseLayout();
            int steps = pb->totalSteps();

            if (!cr.isValid())
                return;

            // Draw progress bar
            if (progress > 0 || steps == 0) {
                double pg = (steps == 0) ? 0.1 : progress / steps;
                int width = QMIN(cr.width(), (int)(pg * cr.width()));
                if (steps == 0) { //Busy indicator

                    if (width < 1) width = 1; //A busy indicator with width 0 is kind of useless

                    int remWidth = cr.width() - width; //Never disappear completely
                    if (remWidth <= 0) remWidth = 1; //Do something non-crashy when too small...

                    int pstep =  int(progress) % ( 2 *  remWidth );

                    if ( pstep > remWidth ) {
                        //Bounce about.. We're remWidth + some delta, we want to be remWidth - delta...
                        // - ( (remWidth + some delta) - 2* remWidth )  = - (some deleta - remWidth) = remWidth - some delta..
                        pstep = - (pstep - 2 * remWidth );
                    }

                    if (reverse)
                        p->fillRect(cr.x() + cr.width() - width - pstep, cr.y(), width, cr.height(),
                                    cg.brush(QColorGroup::Highlight));
                    else
                        p->fillRect(cr.x() + pstep, cr.y(), width, cr.height(),
                                    cg.brush(QColorGroup::Highlight));

                    return;
                }


                // Do fancy gradient for highcolor displays
                if (d->highcolor) {
                    QColor c(cg.highlight());
                    KPixmap pix;
                    pix.resize(cr.width(), cr.height());
                    KPixmapEffect::gradient(pix, reverse ? c.light(150) : c.dark(150),
                                            reverse ? c.dark(150) : c.light(150),
                                            KPixmapEffect::HorizontalGradient);
                    if (reverse)
                        p->drawPixmap(cr.x()+(cr.width()-width), cr.y(), pix,
                                      cr.width()-width, 0, width, cr.height());
                    else
                        p->drawPixmap(cr.x(), cr.y(), pix, 0, 0, width, cr.height());
                } else
                    if (reverse)
                        p->fillRect(cr.x()+(cr.width()-width), cr.y(), width, cr.height(),
                                    cg.brush(QColorGroup::Highlight));
                    else
                        p->fillRect(cr.x(), cr.y(), width, cr.height(),
                                    cg.brush(QColorGroup::Highlight));
            }
            break;
        }

        case CE_ProgressBarLabel: {
            const QProgressBar* pb = (const QProgressBar*)widget;
            QRect cr = subRect(SR_ProgressBarContents, widget);
            double progress = pb->progress();
            bool reverse = QApplication::reverseLayout();
            int steps = pb->totalSteps();

            if (!cr.isValid())
                return;

            QFont font = p->font();
            font.setBold(true);
            p->setFont(font);

            // Draw label
            if (progress > 0 || steps == 0) {
                double pg = (steps == 0) ? 1.0 : progress / steps;
                int width = QMIN(cr.width(), (int)(pg * cr.width()));
                QRect crect;
                if (reverse)
                    crect.setRect(cr.x()+(cr.width()-width), cr.y(), cr.width(), cr.height());
                else
                    crect.setRect(cr.x()+width, cr.y(), cr.width(), cr.height());
                    
                p->save();
                p->setPen(pb->isEnabled() ? (reverse ? cg.text() : cg.highlightedText()) : cg.text());
                p->drawText(r, AlignCenter, pb->progressString());
                p->setClipRect(crect);
                p->setPen(reverse ? cg.highlightedText() : cg.text());
                p->drawText(r, AlignCenter, pb->progressString());
                p->restore();

            } else {
                p->setPen(cg.text());
                p->drawText(r, AlignCenter, pb->progressString());
            }

            break;
        }

        default:
            QCommonStyle::drawControl(element, p, widget, r, cg, flags, opt);
    }
}


QRect KStyle::subRect(SubRect r, const QWidget* widget) const
{
    switch(r)
    {
        // KDE2 look smooth progress bar
        // ------------------------------------------------------------------------
        case SR_ProgressBarGroove:
            return widget->rect();

        case SR_ProgressBarContents:
        case SR_ProgressBarLabel: {
            // ### take into account indicatorFollowsStyle()
            QRect rt = widget->rect();
            return QRect(rt.x()+2, rt.y()+2, rt.width()-4, rt.height()-4);
        }

        default:
            return QCommonStyle::subRect(r, widget);
    }
}


int KStyle::pixelMetric(PixelMetric m, const QWidget* widget) const
{
    switch(m)
    {
        // BUTTONS
        // ------------------------------------------------------------------------
        case PM_ButtonShiftHorizontal:      // Offset by 1
        case PM_ButtonShiftVertical:        // ### Make configurable
            return 1;

        case PM_DockWindowHandleExtent:
        {
            QWidget* parent = 0;
            // Check that we are not a normal toolbar or a hidden dockwidget,
            // in which case we need to adjust the height for font size
            if (widget && (parent = widget->parentWidget() )
                && !parent->inherits("QToolBar")
                && !parent->inherits("QMainWindow")
                && widget->inherits("QDockWindowHandle") )
                    return widget->fontMetrics().lineSpacing();
            else
                return QCommonStyle::pixelMetric(m, widget);
        }

        // TABS
        // ------------------------------------------------------------------------
        case PM_TabBarTabHSpace:
            return 24;

        case PM_TabBarTabVSpace: {
            const QTabBar * tb = (const QTabBar *) widget;
            if ( tb->shape() == QTabBar::RoundedAbove ||
                 tb->shape() == QTabBar::RoundedBelow )
                return 10;
            else
                return 4;
        }

        case PM_TabBarTabOverlap: {
            const QTabBar* tb = (const QTabBar*)widget;
            QTabBar::Shape tbs = tb->shape();

            if ( (tbs == QTabBar::RoundedAbove) ||
                 (tbs == QTabBar::RoundedBelow) )
                return 0;
            else
                return 2;
        }

        // SLIDER
        // ------------------------------------------------------------------------
        case PM_SliderLength:
            return 18;

        case PM_SliderThickness:
            return 24;

        // Determines how much space to leave for the actual non-tickmark
        // portion of the slider.
        case PM_SliderControlThickness: {
            const QSlider* slider   = (const QSlider*)widget;
            QSlider::TickSetting ts = slider->tickmarks();
            int thickness = (slider->orientation() == Horizontal) ?
                             slider->height() : slider->width();
            switch (ts) {
                case QSlider::NoMarks:              // Use total area.
                    break;
                case QSlider::Both:
                    thickness = (thickness/2) + 3;  // Use approx. 1/2 of area.
                    break;
                default:                            // Use approx. 2/3 of area
                    thickness = ((thickness*2)/3) + 3;
                    break;
            };
            return thickness;
        }

        // SPLITTER
        // ------------------------------------------------------------------------
        case PM_SplitterWidth:
            if (widget && widget->inherits("QDockWindowResizeHandle"))
                return 8;   // ### why do we need 2pix extra?
            else
                return 6;

        // FRAMES
        // ------------------------------------------------------------------------
        case PM_MenuBarFrameWidth:
            return 1;

        case PM_DockWindowFrameWidth:
            return 1;

        // GENERAL
        // ------------------------------------------------------------------------
        case PM_MaximumDragDistance:
            return -1;

        case PM_MenuBarItemSpacing:
            return 5;

        case PM_ToolBarItemSpacing:
            return 0;

        case PM_PopupMenuScrollerHeight:
            return pixelMetric( PM_ScrollBarExtent, 0);

        default:
            return QCommonStyle::pixelMetric( m, widget );
    }
}

//Helper to find the next sibling that's not hidden
static QListViewItem* nextVisibleSibling(QListViewItem* item)
{
    QListViewItem* sibling = item;
    do
    {
        sibling = sibling->nextSibling();
    }
    while (sibling && !sibling->isVisible());
    
    return sibling;
}

void KStyle::drawComplexControl( ComplexControl control,
                                 QPainter* p,
                                 const QWidget* widget,
                                 const QRect &r,
                                 const QColorGroup &cg,
                                 SFlags flags,
                                 SCFlags controls,
                                 SCFlags active,
                                 const QStyleOption &opt ) const
{
    switch(control)
    {
        // 3 BUTTON SCROLLBAR
        // ------------------------------------------------------------------------
        case CC_ScrollBar: {
            // Many thanks to Brad Hughes for contributing this code.
            bool useThreeButtonScrollBar = (d->scrollbarType & ThreeButtonScrollBar);

            const QScrollBar *sb = (const QScrollBar*)widget;
            bool   maxedOut   = (sb->minValue()    == sb->maxValue());
            bool   horizontal = (sb->orientation() == Qt::Horizontal);
            SFlags sflags     = ((horizontal ? Style_Horizontal : Style_Default) |
                                 (maxedOut   ? Style_Default : Style_Enabled));

            QRect  addline, subline, subline2, addpage, subpage, slider, first, last;
            subline = querySubControlMetrics(control, widget, SC_ScrollBarSubLine, opt);
            addline = querySubControlMetrics(control, widget, SC_ScrollBarAddLine, opt);
            subpage = querySubControlMetrics(control, widget, SC_ScrollBarSubPage, opt);
            addpage = querySubControlMetrics(control, widget, SC_ScrollBarAddPage, opt);
            slider  = querySubControlMetrics(control, widget, SC_ScrollBarSlider,  opt);
            first   = querySubControlMetrics(control, widget, SC_ScrollBarFirst,   opt);
            last    = querySubControlMetrics(control, widget, SC_ScrollBarLast,    opt);
            subline2 = addline;

            if ( useThreeButtonScrollBar )
                if (horizontal)
                    subline2.moveBy(-addline.width(), 0);
                else
                    subline2.moveBy(0, -addline.height());

            // Draw the up/left button set
            if ((controls & SC_ScrollBarSubLine) && subline.isValid()) {
                drawPrimitive(PE_ScrollBarSubLine, p, subline, cg,
                            sflags | (active == SC_ScrollBarSubLine ?
                                Style_Down : Style_Default));

                if (useThreeButtonScrollBar && subline2.isValid())
                    drawPrimitive(PE_ScrollBarSubLine, p, subline2, cg,
                            sflags | (active == SC_ScrollBarSubLine ?
                                Style_Down : Style_Default));
            }

            if ((controls & SC_ScrollBarAddLine) && addline.isValid())
                drawPrimitive(PE_ScrollBarAddLine, p, addline, cg,
                            sflags | ((active == SC_ScrollBarAddLine) ?
                                        Style_Down : Style_Default));

            if ((controls & SC_ScrollBarSubPage) && subpage.isValid())
                drawPrimitive(PE_ScrollBarSubPage, p, subpage, cg,
                            sflags | ((active == SC_ScrollBarSubPage) ?
                                        Style_Down : Style_Default));

            if ((controls & SC_ScrollBarAddPage) && addpage.isValid())
                drawPrimitive(PE_ScrollBarAddPage, p, addpage, cg,
                            sflags | ((active == SC_ScrollBarAddPage) ?
                                        Style_Down : Style_Default));

            if ((controls & SC_ScrollBarFirst) && first.isValid())
                drawPrimitive(PE_ScrollBarFirst, p, first, cg,
                            sflags | ((active == SC_ScrollBarFirst) ?
                                        Style_Down : Style_Default));

            if ((controls & SC_ScrollBarLast) && last.isValid())
                drawPrimitive(PE_ScrollBarLast, p, last, cg,
                            sflags | ((active == SC_ScrollBarLast) ?
                                        Style_Down : Style_Default));

            if ((controls & SC_ScrollBarSlider) && slider.isValid()) {
                drawPrimitive(PE_ScrollBarSlider, p, slider, cg,
                            sflags | ((active == SC_ScrollBarSlider) ?
                                        Style_Down : Style_Default));
                // Draw focus rect
                if (sb->hasFocus()) {
                    QRect fr(slider.x() + 2, slider.y() + 2,
                             slider.width() - 5, slider.height() - 5);
                    drawPrimitive(PE_FocusRect, p, fr, cg, Style_Default);
                }
            }
            break;
        }


        // SLIDER
        // -------------------------------------------------------------------
        case CC_Slider: {
            const QSlider* slider = (const QSlider*)widget;
            QRect groove = querySubControlMetrics(CC_Slider, widget, SC_SliderGroove, opt);
            QRect handle = querySubControlMetrics(CC_Slider, widget, SC_SliderHandle, opt);

            // Double-buffer slider for no flicker
            QPixmap pix(widget->size());
            QPainter p2;
            p2.begin(&pix);

            if ( slider->parentWidget() &&
                 slider->parentWidget()->backgroundPixmap() &&
                 !slider->parentWidget()->backgroundPixmap()->isNull() ) {
                QPixmap pixmap = *(slider->parentWidget()->backgroundPixmap());
                p2.drawTiledPixmap(r, pixmap, slider->pos());
            } else
                pix.fill(cg.background());

            // Draw slider groove
            if ((controls & SC_SliderGroove) && groove.isValid()) {
                drawKStylePrimitive( KPE_SliderGroove, &p2, widget, groove, cg, flags, opt );

                // Draw the focus rect around the groove
                if (slider->hasFocus())
                    drawPrimitive(PE_FocusRect, &p2, groove, cg);
            }

            // Draw the tickmarks
            if (controls & SC_SliderTickmarks)
                QCommonStyle::drawComplexControl(control, &p2, widget,
                        r, cg, flags, SC_SliderTickmarks, active, opt);

            // Draw the slider handle
            if ((controls & SC_SliderHandle) && handle.isValid()) {
                if (active == SC_SliderHandle)
                    flags |= Style_Active;
                drawKStylePrimitive( KPE_SliderHandle, &p2, widget, handle, cg, flags, opt );
            }

            p2.end();
            bitBlt((QWidget*)widget, r.x(), r.y(), &pix);
            break;
        }

        // LISTVIEW
        // -------------------------------------------------------------------
        case CC_ListView: {

            /*
             * Many thanks to TrollTech AS for donating CC_ListView from QWindowsStyle.
             * CC_ListView code is Copyright (C) 1998-2000 TrollTech AS.
             */

            // Paint the icon and text.
            if ( controls & SC_ListView )
                QCommonStyle::drawComplexControl( control, p, widget, r, cg, flags, controls, active, opt );

            // If we're have a branch or are expanded...
            if ( controls & (SC_ListViewBranch | SC_ListViewExpand) )
            {
                // If no list view item was supplied, break
                if (opt.isDefault())
                    break;

                QListViewItem *item  = opt.listViewItem();
                QListViewItem *child = item->firstChild();

                int y = r.y();
                int c;  // dotline vertice count
                int dotoffset = 0;
                QPointArray dotlines;

                if ( active == SC_All && controls == SC_ListViewExpand ) {
                    // We only need to draw a vertical line
                    c = 2;
                    dotlines.resize(2);
                    dotlines[0] = QPoint( r.right(), r.top() );
                    dotlines[1] = QPoint( r.right(), r.bottom() );

                } else {

                    int linetop = 0, linebot = 0;
                    // each branch needs at most two lines, ie. four end points
                    dotoffset = (item->itemPos() + item->height() - y) % 2;
                    dotlines.resize( item->childCount() * 4 );
                    c = 0;

                    // skip the stuff above the exposed rectangle
                    while ( child && y + child->height() <= 0 )
                    {
                        y += child->totalHeight();
                        child = nextVisibleSibling(child);
                    }

                    int bx = r.width() / 2;

                    // paint stuff in the magical area
                    QListView* v = item->listView();
                    int lh = QMAX( p->fontMetrics().height() + 2 * v->itemMargin(),
                                   QApplication::globalStrut().height() );
                    if ( lh % 2 > 0 )
                        lh++;

                    // Draw all the expand/close boxes...
                    QRect boxrect;
                    QStyle::StyleFlags boxflags;
                    while ( child && y < r.height() )
                    {
                        linebot = y + lh/2;
                        if ( (child->isExpandable() || child->childCount()) &&
                             (child->height() > 0) )
                        {
                            // The primitive requires a rect.
                            boxrect = QRect( bx-4, linebot-4, 9, 9 );
                            boxflags = child->isOpen() ? QStyle::Style_Off : QStyle::Style_On;

                            // KStyle extension: Draw the box and expand/collapse indicator
                            drawKStylePrimitive( KPE_ListViewExpander, p, NULL, boxrect, cg, boxflags, opt );

                            // dotlinery
                            p->setPen( cg.mid() );
                            dotlines[c++] = QPoint( bx, linetop );
                            dotlines[c++] = QPoint( bx, linebot - 5 );
                            dotlines[c++] = QPoint( bx + 5, linebot );
                            dotlines[c++] = QPoint( r.width(), linebot );
                            linetop = linebot + 5;
                        } else {
                            // just dotlinery
                            dotlines[c++] = QPoint( bx+1, linebot );
                            dotlines[c++] = QPoint( r.width(), linebot );
                        }

                        y += child->totalHeight();
                        child = nextVisibleSibling(child);
                    }

                    if ( child ) // there's a child to draw, so move linebot to edge of rectangle
                        linebot = r.height();

                    if ( linetop < linebot )
                    {
                        dotlines[c++] = QPoint( bx, linetop );
                        dotlines[c++] = QPoint( bx, linebot );
                    }
                }

                // Draw all the branches...
                static int thickness = kPixelMetric( KPM_ListViewBranchThickness );
                int line; // index into dotlines
                QRect branchrect;
                QStyle::StyleFlags branchflags;
                for( line = 0; line < c; line += 2 )
                {
                    // assumptions here: lines are horizontal or vertical.
                    // lines always start with the numerically lowest
                    // coordinate.

                    // point ... relevant coordinate of current point
                    // end ..... same coordinate of the end of the current line
                    // other ... the other coordinate of the current point/line
                    if ( dotlines[line].y() == dotlines[line+1].y() )
                    {
                        // Horizontal branch
                        int end = dotlines[line+1].x();
                        int point = dotlines[line].x();
                        int other = dotlines[line].y();

                        branchrect  = QRect( point, other-(thickness/2), end-point, thickness );
                        branchflags = QStyle::Style_Horizontal;

                        // KStyle extension: Draw the horizontal branch
                        drawKStylePrimitive( KPE_ListViewBranch, p, NULL, branchrect, cg, branchflags, opt );

                    } else {
                        // Vertical branch
                        int end = dotlines[line+1].y();
                        int point = dotlines[line].y();
                        int other = dotlines[line].x();
                        int pixmapoffset = ((point & 1) != dotoffset ) ? 1 : 0;

                        branchrect  = QRect( other-(thickness/2), point, thickness, end-point );
                        if (!pixmapoffset)  // ### Hackish - used to hint the offset
                            branchflags = QStyle::Style_NoChange;
                        else
                            branchflags = QStyle::Style_Default;

                        // KStyle extension: Draw the vertical branch
                        drawKStylePrimitive( KPE_ListViewBranch, p, NULL, branchrect, cg, branchflags, opt );
                    }
                }
            }
            break;
        }

        default:
            QCommonStyle::drawComplexControl( control, p, widget, r, cg,
                                              flags, controls, active, opt );
            break;
    }
}


QStyle::SubControl KStyle::querySubControl( ComplexControl control,
                                            const QWidget* widget,
                                            const QPoint &pos,
                                            const QStyleOption &opt ) const
{
    QStyle::SubControl ret = QCommonStyle::querySubControl(control, widget, pos, opt);

    if (d->scrollbarType == ThreeButtonScrollBar) {
        // Enable third button
        if (control == CC_ScrollBar && ret == SC_None)
            ret = SC_ScrollBarSubLine;
    }
    return ret;
}


QRect KStyle::querySubControlMetrics( ComplexControl control,
                                      const QWidget* widget,
                                      SubControl sc,
                                      const QStyleOption &opt ) const
{
    QRect ret;

    if (control == CC_ScrollBar)
    {
        bool threeButtonScrollBar = d->scrollbarType & ThreeButtonScrollBar;
        bool platinumScrollBar    = d->scrollbarType & PlatinumStyleScrollBar;
        bool nextScrollBar        = d->scrollbarType & NextStyleScrollBar;

        const QScrollBar *sb = (const QScrollBar*)widget;
        bool horizontal = sb->orientation() == Qt::Horizontal;
        int sliderstart = sb->sliderStart();
        int sbextent    = pixelMetric(PM_ScrollBarExtent, widget);
        int maxlen      = (horizontal ? sb->width() : sb->height())
                          - (sbextent * (threeButtonScrollBar ? 3 : 2));
        int sliderlen;

        // calculate slider length
        if (sb->maxValue() != sb->minValue())
        {
            uint range = sb->maxValue() - sb->minValue();
            sliderlen = (sb->pageStep() * maxlen) / (range + sb->pageStep());

            int slidermin = pixelMetric( PM_ScrollBarSliderMin, widget );
            if ( sliderlen < slidermin || range > INT_MAX / 2 )
                sliderlen = slidermin;
            if ( sliderlen > maxlen )
                sliderlen = maxlen;
        } else
            sliderlen = maxlen;

        // Subcontrols
        switch (sc)
        {
            case SC_ScrollBarSubLine: {
                // top/left button
                if (platinumScrollBar) {
                    if (horizontal)
                        ret.setRect(sb->width() - 2 * sbextent, 0, sbextent, sbextent);
                    else
                        ret.setRect(0, sb->height() - 2 * sbextent, sbextent, sbextent);
                } else
                    ret.setRect(0, 0, sbextent, sbextent);
                break;
            }

            case SC_ScrollBarAddLine: {
                // bottom/right button
                if (nextScrollBar) {
                    if (horizontal)
                        ret.setRect(sbextent, 0, sbextent, sbextent);
                    else
                        ret.setRect(0, sbextent, sbextent, sbextent);
                } else {
                    if (horizontal)
                        ret.setRect(sb->width() - sbextent, 0, sbextent, sbextent);
                    else
                        ret.setRect(0, sb->height() - sbextent, sbextent, sbextent);
                }
                break;
            }

            case SC_ScrollBarSubPage: {
                // between top/left button and slider
                if (platinumScrollBar) {
                    if (horizontal)
                        ret.setRect(0, 0, sliderstart, sbextent);
                    else
                        ret.setRect(0, 0, sbextent, sliderstart);
                } else if (nextScrollBar) {
                    if (horizontal)
                        ret.setRect(sbextent*2, 0, sliderstart-2*sbextent, sbextent);
                    else
                        ret.setRect(0, sbextent*2, sbextent, sliderstart-2*sbextent);
                } else {
                    if (horizontal)
                        ret.setRect(sbextent, 0, sliderstart - sbextent, sbextent);
                    else
                        ret.setRect(0, sbextent, sbextent, sliderstart - sbextent);
                }
                break;
            }

            case SC_ScrollBarAddPage: {
                // between bottom/right button and slider
                int fudge;

                if (platinumScrollBar)
                    fudge = 0;
                else if (nextScrollBar)
                    fudge = 2*sbextent;
                else
                    fudge = sbextent;

                if (horizontal)
                    ret.setRect(sliderstart + sliderlen, 0,
                            maxlen - sliderstart - sliderlen + fudge, sbextent);
                else
                    ret.setRect(0, sliderstart + sliderlen, sbextent,
                            maxlen - sliderstart - sliderlen + fudge);
                break;
            }

            case SC_ScrollBarGroove: {
                int multi = threeButtonScrollBar ? 3 : 2;
                int fudge;

                if (platinumScrollBar)
                    fudge = 0;
                else if (nextScrollBar)
                    fudge = 2*sbextent;
                else
                    fudge = sbextent;

                if (horizontal)
                    ret.setRect(fudge, 0, sb->width() - sbextent * multi, sb->height());
                else
                    ret.setRect(0, fudge, sb->width(), sb->height() - sbextent * multi);
                break;
            }

            case SC_ScrollBarSlider: {
                if (horizontal)
                    ret.setRect(sliderstart, 0, sliderlen, sbextent);
                else
                    ret.setRect(0, sliderstart, sbextent, sliderlen);
                break;
            }

            default:
                ret = QCommonStyle::querySubControlMetrics(control, widget, sc, opt);
                break;
        }
    } else
        ret = QCommonStyle::querySubControlMetrics(control, widget, sc, opt);

    return ret;
}

static const char * const kstyle_close_xpm[] = {
"12 12 2 1",
"# c #000000",
". c None",
"............",
"............",
"..##....##..",
"...##..##...",
"....####....",
".....##.....",
"....####....",
"...##..##...",
"..##....##..",
"............",
"............",
"............"};

static const char * const kstyle_maximize_xpm[]={
"12 12 2 1",
"# c #000000",
". c None",
"............",
"............",
".##########.",
".##########.",
".#........#.",
".#........#.",
".#........#.",
".#........#.",
".#........#.",
".#........#.",
".##########.",
"............"};


static const char * const kstyle_minimize_xpm[] = {
"12 12 2 1",
"# c #000000",
". c None",
"............",
"............",
"............",
"............",
"............",
"............",
"............",
"...######...",
"...######...",
"............",
"............",
"............"};

static const char * const kstyle_normalizeup_xpm[] = {
"12 12 2 1",
"# c #000000",
". c None",
"............",
"...#######..",
"...#######..",
"...#.....#..",
".#######.#..",
".#######.#..",
".#.....#.#..",
".#.....###..",
".#.....#....",
".#.....#....",
".#######....",
"............"};


static const char * const kstyle_shade_xpm[] = {
"12 12 2 1",
"# c #000000",
". c None",
"............",
"............",
"............",
"............",
"............",
".....#......",
"....###.....",
"...#####....",
"..#######...",
"............",
"............",
"............"};

static const char * const kstyle_unshade_xpm[] = {
"12 12 2 1",
"# c #000000",
". c None",
"............",
"............",
"............",
"............",
"..#######...",
"...#####....",
"....###.....",
".....#......",
"............",
"............",
"............",
"............"};

static const char * const dock_window_close_xpm[] = {
"8 8 2 1",
"# c #000000",
". c None",
"##....##",
".##..##.",
"..####..",
"...##...",
"..####..",
".##..##.",
"##....##",
"........"};

// Message box icons, from page 210 of the Windows style guide.

// Hand-drawn to resemble Microsoft's icons, but in the Mac/Netscape
// palette.  The "question mark" icon, which Microsoft recommends not
// using but a lot of people still use, is left out.

/* XPM */
static const char * const information_xpm[]={
"32 32 5 1",
". c None",
"c c #000000",
"* c #999999",
"a c #ffffff",
"b c #0000ff",
"...........********.............",
"........***aaaaaaaa***..........",
"......**aaaaaaaaaaaaaa**........",
".....*aaaaaaaaaaaaaaaaaa*.......",
"....*aaaaaaaabbbbaaaaaaaac......",
"...*aaaaaaaabbbbbbaaaaaaaac.....",
"..*aaaaaaaaabbbbbbaaaaaaaaac....",
".*aaaaaaaaaaabbbbaaaaaaaaaaac...",
".*aaaaaaaaaaaaaaaaaaaaaaaaaac*..",
"*aaaaaaaaaaaaaaaaaaaaaaaaaaaac*.",
"*aaaaaaaaaabbbbbbbaaaaaaaaaaac*.",
"*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
"*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
"*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
"*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
"*aaaaaaaaaaaabbbbbaaaaaaaaaaac**",
".*aaaaaaaaaaabbbbbaaaaaaaaaac***",
".*aaaaaaaaaaabbbbbaaaaaaaaaac***",
"..*aaaaaaaaaabbbbbaaaaaaaaac***.",
"...caaaaaaabbbbbbbbbaaaaaac****.",
"....caaaaaaaaaaaaaaaaaaaac****..",
".....caaaaaaaaaaaaaaaaaac****...",
"......ccaaaaaaaaaaaaaacc****....",
".......*cccaaaaaaaaccc*****.....",
"........***cccaaaac*******......",
"..........****caaac*****........",
".............*caaac**...........",
"...............caac**...........",
"................cac**...........",
".................cc**...........",
"..................***...........",
"...................**..........."};
/* XPM */
static const char* const warning_xpm[]={
"32 32 4 1",
". c None",
"a c #ffff00",
"* c #000000",
"b c #999999",
".............***................",
"............*aaa*...............",
"...........*aaaaa*b.............",
"...........*aaaaa*bb............",
"..........*aaaaaaa*bb...........",
"..........*aaaaaaa*bb...........",
".........*aaaaaaaaa*bb..........",
".........*aaaaaaaaa*bb..........",
"........*aaaaaaaaaaa*bb.........",
"........*aaaa***aaaa*bb.........",
".......*aaaa*****aaaa*bb........",
".......*aaaa*****aaaa*bb........",
"......*aaaaa*****aaaaa*bb.......",
"......*aaaaa*****aaaaa*bb.......",
".....*aaaaaa*****aaaaaa*bb......",
".....*aaaaaa*****aaaaaa*bb......",
"....*aaaaaaaa***aaaaaaaa*bb.....",
"....*aaaaaaaa***aaaaaaaa*bb.....",
"...*aaaaaaaaa***aaaaaaaaa*bb....",
"...*aaaaaaaaaa*aaaaaaaaaa*bb....",
"..*aaaaaaaaaaa*aaaaaaaaaaa*bb...",
"..*aaaaaaaaaaaaaaaaaaaaaaa*bb...",
".*aaaaaaaaaaaa**aaaaaaaaaaa*bb..",
".*aaaaaaaaaaa****aaaaaaaaaa*bb..",
"*aaaaaaaaaaaa****aaaaaaaaaaa*bb.",
"*aaaaaaaaaaaaa**aaaaaaaaaaaa*bb.",
"*aaaaaaaaaaaaaaaaaaaaaaaaaaa*bbb",
"*aaaaaaaaaaaaaaaaaaaaaaaaaaa*bbb",
".*aaaaaaaaaaaaaaaaaaaaaaaaa*bbbb",
"..*************************bbbbb",
"....bbbbbbbbbbbbbbbbbbbbbbbbbbb.",
".....bbbbbbbbbbbbbbbbbbbbbbbbb.."};
/* XPM */
static const char* const critical_xpm[]={
"32 32 4 1",
". c None",
"a c #999999",
"* c #ff0000",
"b c #ffffff",
"...........********.............",
".........************...........",
".......****************.........",
"......******************........",
".....********************a......",
"....**********************a.....",
"...************************a....",
"..*******b**********b*******a...",
"..******bbb********bbb******a...",
".******bbbbb******bbbbb******a..",
".*******bbbbb****bbbbb*******a..",
"*********bbbbb**bbbbb*********a.",
"**********bbbbbbbbbb**********a.",
"***********bbbbbbbb***********aa",
"************bbbbbb************aa",
"************bbbbbb************aa",
"***********bbbbbbbb***********aa",
"**********bbbbbbbbbb**********aa",
"*********bbbbb**bbbbb*********aa",
".*******bbbbb****bbbbb*******aa.",
".******bbbbb******bbbbb******aa.",
"..******bbb********bbb******aaa.",
"..*******b**********b*******aa..",
"...************************aaa..",
"....**********************aaa...",
"....a********************aaa....",
".....a******************aaa.....",
"......a****************aaa......",
".......aa************aaaa.......",
".........aa********aaaaa........",
"...........aaaaaaaaaaa..........",
".............aaaaaaa............"};

QPixmap KStyle::stylePixmap( StylePixmap stylepixmap,
                          const QWidget* widget,
                          const QStyleOption& opt) const
{
    switch (stylepixmap) {
        case SP_TitleBarShadeButton:
            return QPixmap(const_cast<const char**>(kstyle_shade_xpm));
        case SP_TitleBarUnshadeButton:
            return QPixmap(const_cast<const char**>(kstyle_unshade_xpm));
        case SP_TitleBarNormalButton:
            return QPixmap(const_cast<const char**>(kstyle_normalizeup_xpm));
        case SP_TitleBarMinButton:
            return QPixmap(const_cast<const char**>(kstyle_minimize_xpm));
        case SP_TitleBarMaxButton:
            return QPixmap(const_cast<const char**>(kstyle_maximize_xpm));
        case SP_TitleBarCloseButton:
            return QPixmap(const_cast<const char**>(kstyle_close_xpm));
        case SP_DockWindowCloseButton:
            return QPixmap(const_cast<const char**>(dock_window_close_xpm ));
        case SP_MessageBoxInformation:
            return QPixmap(const_cast<const char**>(information_xpm));
        case SP_MessageBoxWarning:
            return QPixmap(const_cast<const char**>(warning_xpm));
        case SP_MessageBoxCritical:
            return QPixmap(const_cast<const char**>(critical_xpm));
        default:
            break;
    }
    return QCommonStyle::stylePixmap(stylepixmap, widget, opt);
}


int KStyle::styleHint( StyleHint sh, const QWidget* w,
                       const QStyleOption &opt, QStyleHintReturn* shr) const
{
    switch (sh)
    {
        case SH_EtchDisabledText:
            return d->etchDisabledText ? 1 : 0;

        case SH_PopupMenu_Scrollable:
            return d->scrollablePopupmenus ? 1 : 0;

        case SH_MenuBar_AltKeyNavigation:
            return d->menuAltKeyNavigation ? 1 : 0;

        case SH_PopupMenu_SubMenuPopupDelay:
            if ( styleHint( SH_PopupMenu_SloppySubMenus, w ) )
                return QMIN( 100, d->popupMenuDelay );
            else
                return d->popupMenuDelay;

        case SH_PopupMenu_SloppySubMenus:
            return d->sloppySubMenus;

        case SH_ItemView_ChangeHighlightOnFocus:
        case SH_Slider_SloppyKeyEvents:
        case SH_MainWindow_SpaceBelowMenuBar:
        case SH_PopupMenu_AllowActiveAndDisabled:
            return 0;

        case SH_Slider_SnapToValue:
        case SH_PrintDialog_RightAlignButtons:
        case SH_FontDialog_SelectAssociatedText:
        case SH_MenuBar_MouseTracking:
        case SH_PopupMenu_MouseTracking:
        case SH_ComboBox_ListMouseTracking:
        case SH_ScrollBar_MiddleClickAbsolutePosition:
            return 1;
        case SH_LineEdit_PasswordCharacter:
        {
            if (w) {
                const QFontMetrics &fm = w->fontMetrics();
                if (fm.inFont(QChar(0x25CF))) {
                    return 0x25CF;
                } else if (fm.inFont(QChar(0x2022))) {
                    return 0x2022;
                }
            }
            return '*';
        }

        default:
            return QCommonStyle::styleHint(sh, w, opt, shr);
    }
}


bool KStyle::eventFilter( QObject* object, QEvent* event )
{
    if ( d->useFilledFrameWorkaround )
    {
        // Make the QMenuBar/QToolBar paintEvent() cover a larger area to
        // ensure that the filled frame contents are properly painted.
        // We essentially modify the paintEvent's rect to include the
        // panel border, which also paints the widget's interior.
        // This is nasty, but I see no other way to properly repaint
        // filled frames in all QMenuBars and QToolBars.
        // -- Karol.
        QFrame *frame = 0;
        if ( event->type() == QEvent::Paint
                && (frame = ::qt_cast<QFrame*>(object)) )
        {
            if (frame->frameShape() != QFrame::ToolBarPanel && frame->frameShape() != QFrame::MenuBarPanel)
                return false;
                
            bool horizontal = true;
            QPaintEvent* pe = (QPaintEvent*)event;
            QToolBar *toolbar = ::qt_cast< QToolBar *>( frame );
            QRect r = pe->rect();

            if (toolbar && toolbar->orientation() == Qt::Vertical)
                horizontal = false;

            if (horizontal) {
                if ( r.height() == frame->height() )
                    return false;   // Let QFrame handle the painting now.

                // Else, send a new paint event with an updated paint rect.
                QPaintEvent dummyPE( QRect( r.x(), 0, r.width(), frame->height()) );
                QApplication::sendEvent( frame, &dummyPE );
            }
            else {  // Vertical
                if ( r.width() == frame->width() )
                    return false;

                QPaintEvent dummyPE( QRect( 0, r.y(), frame->width(), r.height()) );
                QApplication::sendEvent( frame, &dummyPE );
            }

            // Discard this event as we sent a new paintEvent.
            return true;
        }
    }

    return false;
}


// -----------------------------------------------------------------------------
// I N T E R N A L -  KStyle menu transparency handler
// -----------------------------------------------------------------------------

TransparencyHandler::TransparencyHandler( KStyle* style,
    TransparencyEngine tEngine, float menuOpacity, bool useDropShadow )
    : QObject()
{
    te = tEngine;
    kstyle = style;
    opacity = menuOpacity;
    dropShadow = useDropShadow;
    pix.setOptimization(QPixmap::BestOptim);
}

TransparencyHandler::~TransparencyHandler()
{
}

// This is meant to be ugly but fast.
void TransparencyHandler::rightShadow(QImage& dst)
{
    if (dst.depth() != 32)
        dst = dst.convertDepth(32);

    // blend top-right corner.
    int pixels = dst.width() * dst.height();
#ifdef WORDS_BIGENDIAN
    register unsigned char* data = dst.bits() + 1;  // Skip alpha
#else
    register unsigned char* data = dst.bits();      // Skip alpha
#endif
    for(register int i = 0; i < 16; i++) {
        *data = (unsigned char)((*data)*top_right_corner[i]); data++;
        *data = (unsigned char)((*data)*top_right_corner[i]); data++;
        *data = (unsigned char)((*data)*top_right_corner[i]); data++;
        data++; // skip alpha
    }

    pixels -= 32;   // tint right strip without rounded edges.
    register int c = 0;
    for(register int i = 0; i < pixels; i++) {
        *data = (unsigned char)((*data)*shadow_strip[c]); data++;
        *data = (unsigned char)((*data)*shadow_strip[c]); data++;
        *data = (unsigned char)((*data)*shadow_strip[c]); data++;
        data++; // skip alpha
            ++c;
        c %= 4;
    }

    // tint bottom edge
    for(register int i = 0; i < 16; i++) {
        *data = (unsigned char)((*data)*bottom_right_corner[i]); data++;
        *data = (unsigned char)((*data)*bottom_right_corner[i]); data++;
        *data = (unsigned char)((*data)*bottom_right_corner[i]); data++;
        data++; // skip alpha
    }
}

void TransparencyHandler::bottomShadow(QImage& dst)
{
    if (dst.depth() != 32)
        dst = dst.convertDepth(32);

    int line = 0;
    int width = dst.width() - 4;
    double strip_data = shadow_strip[0];
    double* corner = const_cast<double*>(bottom_left_corner);

#ifdef WORDS_BIGENDIAN
    register unsigned char* data = dst.bits() + 1;  // Skip alpha
#else
    register unsigned char* data = dst.bits();  // Skip alpha
#endif

    for(int y = 0; y < 4; y++)
    {
        // Bottom-left Corner
        for(register int x = 0; x < 4; x++) {
            *data = (unsigned char)((*data)*(*corner)); data++;
            *data = (unsigned char)((*data)*(*corner)); data++;
            *data = (unsigned char)((*data)*(*corner)); data++;
            data++; // skip alpha
            corner++;
        }

        // Scanline
        for(register int x = 0; x < width; x++) {
            *data = (unsigned char)((*data)*strip_data); data++;
            *data = (unsigned char)((*data)*strip_data); data++;
            *data = (unsigned char)((*data)*strip_data); data++;
            data++;
        }

        strip_data = shadow_strip[++line];
    }
}

// Create a shadow of thickness 4.
void TransparencyHandler::createShadowWindows(const QPopupMenu* p)
{
#ifdef Q_WS_X11
    int x2 = p->x()+p->width();
    int y2 = p->y()+p->height();
    QRect shadow1(x2, p->y() + 4, 4, p->height());
    QRect shadow2(p->x() + 4, y2, p->width() - 4, 4);

    // Create a fake drop-down shadow effect via blended Xwindows
    ShadowElements se;
    se.w1 = new QWidget(0, 0, WStyle_Customize | WType_Popup | WX11BypassWM );
    se.w2 = new QWidget(0, 0, WStyle_Customize | WType_Popup | WX11BypassWM );
    se.w1->setGeometry(shadow1);
    se.w2->setGeometry(shadow2);
    XSelectInput(qt_xdisplay(), se.w1->winId(), StructureNotifyMask );
    XSelectInput(qt_xdisplay(), se.w2->winId(), StructureNotifyMask );

    // Insert a new ShadowMap entry
    shadowMap()[p] = se;

    // Some hocus-pocus here to create the drop-shadow.
    QPixmap pix_shadow1 = QPixmap::grabWindow(qt_xrootwin(),
            shadow1.x(), shadow1.y(), shadow1.width(), shadow1.height());
    QPixmap pix_shadow2 = QPixmap::grabWindow(qt_xrootwin(),
            shadow2.x(), shadow2.y(), shadow2.width(), shadow2.height());

    QImage img;
    img = pix_shadow1.convertToImage();
    rightShadow(img);
    pix_shadow1.convertFromImage(img);
    img = pix_shadow2.convertToImage();
    bottomShadow(img);
    pix_shadow2.convertFromImage(img);

    // Set the background pixmaps
    se.w1->setErasePixmap(pix_shadow1);
    se.w2->setErasePixmap(pix_shadow2);

    // Show the 'shadow' just before showing the popup menu window
    // Don't use QWidget::show() so we don't confuse QEffects, thus causing broken focus.
    XMapWindow(qt_xdisplay(), se.w1->winId());
    XMapWindow(qt_xdisplay(), se.w2->winId());
#else
    Q_UNUSED( p )
#endif
}

void TransparencyHandler::removeShadowWindows(const QPopupMenu* p)
{
#ifdef Q_WS_X11
    ShadowMap::iterator it = shadowMap().find(p);
    if (it != shadowMap().end())
    {
        ShadowElements se = it.data();
        XUnmapWindow(qt_xdisplay(), se.w1->winId());    // hide
        XUnmapWindow(qt_xdisplay(), se.w2->winId());
        XFlush(qt_xdisplay());                          // try to hide faster
        delete se.w1;
        delete se.w2;
        shadowMap().erase(it);
    }
#else
    Q_UNUSED( p )
#endif
}

bool TransparencyHandler::eventFilter( QObject* object, QEvent* event )
{
#if !defined Q_WS_MAC && !defined Q_WS_WIN
    // Transparency idea was borrowed from KDE2's "MegaGradient" Style,
    // Copyright (C) 2000 Daniel M. Duley <mosfet@kde.org>

    // Added 'fake' menu shadows <04-Jul-2002> -- Karol
    QPopupMenu* p = (QPopupMenu*)object;
    QEvent::Type et = event->type();

    if (et == QEvent::Show)
    {
        // Handle translucency
        if (te != Disabled)
        {
            pix = QPixmap::grabWindow(qt_xrootwin(),
                    p->x(), p->y(), p->width(), p->height());

            switch (te) {
#ifdef HAVE_XRENDER
                case XRender:
                    if (qt_use_xrender) {
                        XRenderBlendToPixmap(p);
                        break;
                    }
                    // Fall through intended
#else
                case XRender:
#endif
                case SoftwareBlend:
                    blendToPixmap(p->colorGroup(), p);
                    break;

                case SoftwareTint:
                default:
                    blendToColor(p->colorGroup().button());
            };

            p->setErasePixmap(pix);
        }

        // Handle drop shadow
        // * FIXME : !shadowMap().contains(p) is a workaround for leftover
        // * shadows after duplicate show events.
        // * TODO : determine real cause for duplicate events
        // * till 20021005
        if (dropShadow && p->width() > 16 && p->height() > 16 && !shadowMap().contains( p ))
            createShadowWindows(p);
    }
    else if (et == QEvent::Hide)
    {
        // Handle drop shadow
        if (dropShadow)
            removeShadowWindows(p);

        // Handle translucency
        if (te != Disabled)
            p->setErasePixmap(QPixmap());
    }

#endif
    return false;
}


// Blends a QImage to a predefined color, with a given opacity.
void TransparencyHandler::blendToColor(const QColor &col)
{
    if (opacity < 0.0 || opacity > 1.0)
        return;

    QImage img = pix.convertToImage();
    KImageEffect::blend(col, img, opacity);
    pix.convertFromImage(img);
}


void TransparencyHandler::blendToPixmap(const QColorGroup &cg, const QPopupMenu* p)
{
    if (opacity < 0.0 || opacity > 1.0)
        return;

    KPixmap blendPix;
    blendPix.resize( pix.width(), pix.height() );

    if (blendPix.width()  != pix.width() ||
        blendPix.height() != pix.height())
        return;

    // Allow styles to define the blend pixmap - allows for some interesting effects.
    kstyle->renderMenuBlendPixmap( blendPix, cg, p );

    QImage blendImg = blendPix.convertToImage();
    QImage backImg  = pix.convertToImage();
    KImageEffect::blend(blendImg, backImg, opacity);
    pix.convertFromImage(backImg);
}


#ifdef HAVE_XRENDER
// Here we go, use XRender in all its glory.
// NOTE: This is actually a bit slower than the above routines
// on non-accelerated displays. -- Karol.
void TransparencyHandler::XRenderBlendToPixmap(const QPopupMenu* p)
{
    KPixmap renderPix;
    renderPix.resize( pix.width(), pix.height() );

    // Allow styles to define the blend pixmap - allows for some interesting effects.
    kstyle->renderMenuBlendPixmap( renderPix, p->colorGroup(), p );

    Display* dpy = qt_xdisplay();
    Pixmap   alphaPixmap;
    Picture  alphaPicture;
    XRenderPictFormat        Rpf;
    XRenderPictureAttributes Rpa;
    XRenderColor clr;
    clr.alpha = ((unsigned short)(255*opacity) << 8);

    Rpf.type  = PictTypeDirect;
    Rpf.depth = 8;
    Rpf.direct.alphaMask = 0xff;
    Rpa.repeat = True;  // Tile

    XRenderPictFormat* xformat = XRenderFindFormat(dpy,
        PictFormatType | PictFormatDepth | PictFormatAlphaMask, &Rpf, 0);

    alphaPixmap = XCreatePixmap(dpy, p->handle(), 1, 1, 8);
    alphaPicture = XRenderCreatePicture(dpy, alphaPixmap, xformat, CPRepeat, &Rpa);

    XRenderFillRectangle(dpy, PictOpSrc, alphaPicture, &clr, 0, 0, 1, 1);

    XRenderComposite(dpy, PictOpOver,
            renderPix.x11RenderHandle(), alphaPicture, pix.x11RenderHandle(), // src, mask, dst
            0, 0,   // srcx,  srcy
            0, 0,   // maskx, masky
            0, 0,   // dstx,  dsty
            pix.width(), pix.height());

    XRenderFreePicture(dpy, alphaPicture);
    XFreePixmap(dpy, alphaPixmap);
}
#endif

void KStyle::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }

// vim: set noet ts=4 sw=4:
// kate: indent-width 4; replace-tabs off; tab-width 4; space-indent off;

#include "kstyle.moc"

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