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quartz.cpp

/*
 *
 * Gallium-Quartz KWin client
 *
 * Copyright 2001
 *   Karol Szwed <gallium@kde.org>
 *   http://gallium.n3.net/
 *
 * Based on the KDE default client.
 *
 * Includes mini titlebars for ToolWindow Support.
 * Button positions are now customizable.
 *
 */

#include <kconfig.h>
#include <kdrawutil.h>
#include <kglobal.h>
#include <klocale.h>
#include <kpixmapeffect.h>
#include <qbitmap.h>
#include <qcursor.h>
#include <qdrawutil.h>
#include <qimage.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qtooltip.h>
#include <qapplication.h>

#include "quartz.h"


namespace Quartz {

static const unsigned char iconify_bits[] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x00,
  0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

static const unsigned char close_bits[] = {
  0x00, 0x00, 0x86, 0x01, 0xcc, 0x00, 0x78, 0x00, 0x30, 0x00, 0x78, 0x00,
  0xcc, 0x00, 0x86, 0x01, 0x00, 0x00, 0x00, 0x00};

static const unsigned char maximize_bits[] = {
  0xff, 0x01, 0xff, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
  0x01, 0x01, 0x01, 0x01, 0xff, 0x01, 0x00, 0x00};

static const unsigned char minmax_bits[] = {
  0xfc, 0x00, 0xfc, 0x00, 0x84, 0x00, 0xbf, 0x00, 0xbf, 0x00, 0xe1, 0x00,
  0x21, 0x00, 0x21, 0x00, 0x3f, 0x00, 0x00, 0x00};

static const unsigned char question_bits[] = {
  0x00, 0x00, 0x3c, 0x00, 0x66, 0x00, 0x60, 0x00, 0x30, 0x00, 0x18, 0x00,
  0x00, 0x00, 0x18, 0x00, 0x18, 0x00, 0x00, 0x00};

static const unsigned char pindown_white_bits[] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x80, 0x1f, 0xa0, 0x03,
  0xb0, 0x01, 0x30, 0x01, 0xf0, 0x00, 0x70, 0x00, 0x20, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

static const unsigned char pindown_gray_bits[] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1c,
  0x00, 0x0e, 0x00, 0x06, 0x00, 0x00, 0x80, 0x07, 0xc0, 0x03, 0xe0, 0x01,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

static const unsigned char pindown_dgray_bits[] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0xc0, 0x10, 0x70, 0x20, 0x50, 0x20,
  0x48, 0x30, 0xc8, 0x38, 0x08, 0x1f, 0x08, 0x18, 0x10, 0x1c, 0x10, 0x0e,
  0xe0, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

static const unsigned char pinup_white_bits[] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x80, 0x11,
  0x3f, 0x15, 0x00, 0x15, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

static const unsigned char pinup_gray_bits[] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x80, 0x0a, 0xbf, 0x0a, 0x80, 0x15, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

static const unsigned char pinup_dgray_bits[] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x20, 0x40, 0x31, 0x40, 0x2e,
  0x40, 0x20, 0x40, 0x20, 0x7f, 0x2a, 0x40, 0x3f, 0xc0, 0x31, 0xc0, 0x20,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

static const unsigned char above_on_bits[] = {
  0x00, 0x00, 0xfe, 0x01, 0xfe, 0x01, 0x30, 0x00, 0xfc, 0x00, 0x78, 0x00,
  0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

static const unsigned char above_off_bits[] = {
  0x30, 0x00, 0x78, 0x00, 0xfc, 0x00, 0x30, 0x00, 0xfe, 0x01, 0xfe, 0x01,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

static const unsigned char below_on_bits[] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x78, 0x00, 0xfc, 0x00,
  0x30, 0x00, 0xfe, 0x01, 0xfe, 0x01, 0x00, 0x00};

static const unsigned char below_off_bits[] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x01, 0xfe, 0x01,
  0x30, 0x00, 0xfc, 0x00, 0x78, 0x00, 0x30, 0x00};

static const unsigned char shade_on_bits[] = {
  0x00, 0x00, 0xfe, 0x01, 0xfe, 0x01, 0xfe, 0x01, 0x02, 0x01, 0x02, 0x01,
  0x02, 0x01, 0x02, 0x01, 0xfe, 0x01, 0x00, 0x00};

static const unsigned char shade_off_bits[] = {
  0x00, 0x00, 0xfe, 0x01, 0xfe, 0x01, 0xfe, 0x01, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};



// Titlebar button positions
bool onAllDesktopsButtonOnLeft = true;
bool coloredFrame       = true;

KPixmap* titleBlocks    = NULL;
KPixmap* ititleBlocks   = NULL;
KPixmap* pinDownPix     = NULL;
KPixmap* pinUpPix       = NULL;
KPixmap* ipinDownPix    = NULL;
KPixmap* ipinUpPix      = NULL;
static int normalTitleHeight;
static int toolTitleHeight;
static int borderWidth;

bool quartz_initialized = false;
QuartzHandler* clientHandler;



QuartzHandler::QuartzHandler()
{
    quartz_initialized = false;
    readConfig();
    createPixmaps();
    quartz_initialized = true;
}


QuartzHandler::~QuartzHandler()
{
    quartz_initialized = false;
    freePixmaps();
}


KDecoration* QuartzHandler::createDecoration( KDecorationBridge* bridge )
{
    return new QuartzClient( bridge, this );
}


bool QuartzHandler::reset(unsigned long changed)
{
    quartz_initialized = false;
    freePixmaps();
    readConfig();
    createPixmaps();
    quartz_initialized = true;

    // Do we need to "hit the wooden hammer" ?
    bool needHardReset = true;
    if (changed & SettingColors)
    {
        needHardReset = false;
    }

    if (needHardReset) {
        return true;
    } else {
        resetDecorations(changed);
        return false;
    }
    return true;
}


void QuartzHandler::readConfig()
{
    KConfig conf("kwinquartzrc");
    conf.setGroup("General");
    coloredFrame = conf.readBoolEntry( "UseTitleBarBorderColors", true );

    // A small hack to make the on all desktops button look nicer
    onAllDesktopsButtonOnLeft = KDecoration::options()->titleButtonsLeft().contains( 'S' );
        if ( QApplication::reverseLayout() )
            onAllDesktopsButtonOnLeft = !onAllDesktopsButtonOnLeft;
    switch(options()->preferredBorderSize(this)) {
    case BorderLarge:
        borderWidth = 8;
        break;
    case BorderVeryLarge:
        borderWidth = 12;
        break;
    case BorderHuge:
        borderWidth = 18;
        break;
    case BorderVeryHuge:
        borderWidth = 27;
        break;
    case BorderOversized:
        borderWidth = 40;
        break;
    case BorderTiny:
    case BorderNormal:
    default:
        borderWidth = 4;
    }

    normalTitleHeight = QFontMetrics(options()->font(true)).height();
    if (normalTitleHeight < 18) normalTitleHeight = 18;
    if (normalTitleHeight < borderWidth) normalTitleHeight = borderWidth;

    toolTitleHeight = QFontMetrics(options()->font(true, true)).height();
    if (toolTitleHeight < 12) toolTitleHeight = 12;
    if (toolTitleHeight < borderWidth) toolTitleHeight = borderWidth;
}


// This does the colour transition magic. (You say "Oh, is that it?")
// This may be made configurable at a later stage
void QuartzHandler::drawBlocks( KPixmap *pi, KPixmap &p, const QColor &c1, const QColor &c2 )
{
    QPainter px;

    px.begin( pi );

    // Draw a background gradient first
    KPixmapEffect::gradient(p, c1, c2, KPixmapEffect::HorizontalGradient);

    int factor = (pi->height()-2)/4;
    int square = factor - (factor+2)/4;

    int x = pi->width() - 5*factor - square;
    int y = (pi->height() - 4*factor)/2;

    px.fillRect( x, y,          square, square, c1.light(120) );
    px.fillRect( x, y+factor,   square, square, c1 );
    px.fillRect( x, y+2*factor, square, square, c1.light(110) );
    px.fillRect( x, y+3*factor, square, square, c1 );

    px.fillRect( x+factor, y,          square, square, c1.light(110) );
    px.fillRect( x+factor, y+factor,   square, square, c2.light(110) );
    px.fillRect( x+factor, y+2*factor, square, square, c1.light(120) );
    px.fillRect( x+factor, y+3*factor, square, square, c2.light(130) );

    px.fillRect( x+2*factor, y+factor,   square, square, c1.light(110) );
    px.fillRect( x+2*factor, y+2*factor, square, square, c2.light(120) );
    px.fillRect( x+2*factor, y+3*factor, square, square, c2.light(150) );

    px.fillRect( x+3*factor, y,          square, square, c1.dark(110) );
    px.fillRect( x+3*factor, y+2*factor, square, square, c2.light(120) );
    px.fillRect( x+3*factor, y+3*factor, square, square, c1.dark(120) );

    px.fillRect( x+4*factor, y+factor,   square, square, c1.light(110) );
    px.fillRect( x+4*factor, y+3*factor, square, square, c1.dark(110) );

    px.fillRect( x+5*factor, y+2*factor, square, square, c2.light(120));
    px.fillRect( x+5*factor, y+3*factor, square, square, c2.light(110) );
}


// This paints the button pixmaps upon loading the style.
void QuartzHandler::createPixmaps()
{
    // Obtain titlebar blend colours, and create the block stuff on pixmaps.
    QColorGroup g2 = options()->colorGroup(ColorTitleBlend, true);
    QColor c2 = g2.background();
    g2 = options()->colorGroup(ColorTitleBar, true );
    QColor c = g2.background().light(130);

    titleBlocks = new KPixmap();
    titleBlocks->resize( normalTitleHeight*25/18, normalTitleHeight );
    drawBlocks( titleBlocks, *titleBlocks, c, c2 );

    g2 = options()->colorGroup(ColorTitleBlend, false);
    c2 = g2.background();
    g2 = options()->colorGroup(ColorTitleBar, false );
    c = g2.background().light(130);

    ititleBlocks = new KPixmap();
    ititleBlocks->resize( normalTitleHeight*25/18, normalTitleHeight );
    drawBlocks( ititleBlocks, *ititleBlocks, c, c2 );

    // Set the on all desktops pin pixmaps;
    QColorGroup g;
    QPainter p;

    g = options()->colorGroup( onAllDesktopsButtonOnLeft ? ColorTitleBar : ColorTitleBlend, true );
    c = onAllDesktopsButtonOnLeft ? g.background().light(130) : g.background();
    g2 = options()->colorGroup( ColorButtonBg, true );

    pinUpPix = new KPixmap();
    pinUpPix->resize(16, 16);
    p.begin( pinUpPix );
    p.fillRect( 0, 0, 16, 16, c);
    kColorBitmaps( &p, g2, 0, 1, 16, 16, true, pinup_white_bits,
                    pinup_gray_bits, NULL, NULL, pinup_dgray_bits, NULL );
    p.end();

    pinDownPix = new KPixmap();
    pinDownPix->resize(16, 16);
    p.begin( pinDownPix );
    p.fillRect( 0, 0, 16, 16, c);
    kColorBitmaps( &p, g2, 0, 1, 16, 16, true, pindown_white_bits,
                    pindown_gray_bits, NULL, NULL, pindown_dgray_bits, NULL );
    p.end();


    // Inactive pins
    g = options()->colorGroup( onAllDesktopsButtonOnLeft ? ColorTitleBar : ColorTitleBlend, false );
    c = onAllDesktopsButtonOnLeft ? g.background().light(130) : g.background();
    g2 = options()->colorGroup( ColorButtonBg, false );

    ipinUpPix = new KPixmap();
    ipinUpPix->resize(16, 16);
    p.begin( ipinUpPix );
    p.fillRect( 0, 0, 16, 16, c);
    kColorBitmaps( &p, g2, 0, 1, 16, 16, true, pinup_white_bits,
                    pinup_gray_bits, NULL, NULL, pinup_dgray_bits, NULL );
    p.end();

    ipinDownPix = new KPixmap();
    ipinDownPix->resize(16, 16);
    p.begin( ipinDownPix );
    p.fillRect( 0, 0, 16, 16, c);
    kColorBitmaps( &p, g2, 0, 1, 16, 16, true, pindown_white_bits,
                    pindown_gray_bits, NULL, NULL, pindown_dgray_bits, NULL );
    p.end();
}


void QuartzHandler::freePixmaps()
{
    delete titleBlocks;
    delete ititleBlocks;

    // On all desktops pin images
    delete pinUpPix;
    delete ipinUpPix;
    delete pinDownPix;
    delete ipinDownPix;
}


QValueList< QuartzHandler::BorderSize > QuartzHandler::borderSizes() const
{ // the list must be sorted
  return QValueList< BorderSize >() << BorderNormal << BorderLarge <<
      BorderVeryLarge <<  BorderHuge << BorderVeryHuge << BorderOversized;
}


QuartzButton::QuartzButton(QuartzClient *parent, const char *name, bool largeButton,
        bool isLeftButton, bool isOnAllDesktopsButton, const unsigned char *bitmap,
        const QString& tip, const int realizeBtns)
    : QButton(parent->widget(), name),
      last_button(NoButton)
{
    setTipText(tip);
    setCursor(ArrowCursor);

    // Eliminate any possible background flicker
    setBackgroundMode( QWidget::NoBackground );
    setToggleButton( isOnAllDesktopsButton );

    realizeButtons = realizeBtns;

    deco     = NULL;
        large    = largeButton;
        if ( QApplication::reverseLayout() )
             isLeft      = !isLeftButton;
         else
             isLeft      = isLeftButton;
    isOnAllDesktops = isOnAllDesktopsButton;
    client   = parent;

    if ( large )
       setFixedSize(normalTitleHeight-2, normalTitleHeight-2);
    else
       setFixedSize(toolTitleHeight-2, toolTitleHeight-2);

    if(bitmap)
        setBitmap(bitmap);
}


QuartzButton::~QuartzButton()
{
    delete deco;
}


QSize QuartzButton::sizeHint() const
{
   if ( large )
      return( QSize(normalTitleHeight-2, normalTitleHeight-2) );
   else
      return( QSize(toolTitleHeight-2, toolTitleHeight-2) );
}


void QuartzButton::setBitmap(const unsigned char *bitmap)
{
    delete deco;

    deco = new QBitmap(10, 10, bitmap, true);
    deco->setMask( *deco );
    repaint( false );
}


void QuartzButton::setTipText(const QString &tip) {
    if(KDecoration::options()->showTooltips()) {
        QToolTip::remove(this );
        QToolTip::add(this, tip );
    }
}


void QuartzButton::drawButton(QPainter *p)
{
    // Never paint if the pixmaps have not been created
    if (!quartz_initialized)
        return;

    QColor c;

    if (isLeft)
        c = KDecoration::options()->color(KDecoration::ColorTitleBar, client->isActive()).light(130);
    else
        c = KDecoration::options()->color(KDecoration::ColorTitleBlend, client->isActive());

    // Fill the button background with an appropriate color
    p->fillRect(0, 0, width(), height(), c );

    // If we have a decoration bitmap, then draw that
    // otherwise we paint a menu button (with mini icon), or a onAllDesktops button.
    if( deco )
    {
        int xOff = (width()-10)/2;
        int yOff = (height()-10)/2;
        p->setPen( Qt::black );
        p->drawPixmap(isDown() ? xOff+2: xOff+1, isDown() ? yOff+2 : yOff+1, *deco);
        p->setPen( KDecoration::options()->color(KDecoration::ColorButtonBg, client->isActive()).light(150) );
        p->drawPixmap(isDown() ? xOff+1: xOff, isDown() ? yOff+1 : yOff, *deco);
    } else
        {
            QPixmap btnpix;
            int Offset = 0;

            if (isOnAllDesktops)
            {
                if (isDown())
                    Offset = 1;

                // Select the right onAllDesktops button to paint
                if (client->isActive())
                    btnpix = isOn() ? *pinDownPix : *pinUpPix;
                else
                    btnpix = isOn() ? *ipinDownPix : *ipinUpPix;

            } else
                btnpix = client->icon().pixmap( QIconSet::Small, QIconSet::Normal);

            // Shrink the miniIcon for tiny titlebars.
            if ( height() < 16)
            {
                QPixmap tmpPix;

                // Smooth scale the image
                tmpPix.convertFromImage( btnpix.convertToImage().smoothScale(height(), height()));
                p->drawPixmap( 0, 0, tmpPix );
            } else {
                Offset += (height() - 16)/2;
                p->drawPixmap( Offset, Offset, btnpix );
            }
    }
}


// Make the protected member public
void QuartzButton::turnOn( bool isOn )
{
    if ( isToggleButton() )
        setOn( isOn );
}


void QuartzButton::mousePressEvent( QMouseEvent* e )
{
    last_button = e->button();
    QMouseEvent me( e->type(), e->pos(), e->globalPos(),
                    (e->button()&realizeButtons)?LeftButton:NoButton, e->state() );
    QButton::mousePressEvent( &me );
}


void QuartzButton::mouseReleaseEvent( QMouseEvent* e )
{
    last_button = e->button();
    QMouseEvent me( e->type(), e->pos(), e->globalPos(),
                    (e->button()&realizeButtons)?LeftButton:NoButton, e->state() );
    QButton::mouseReleaseEvent( &me );
}



QuartzClient::QuartzClient(KDecorationBridge* bridge, KDecorationFactory* factory)
    : KDecoration (bridge, factory)
{
}


void QuartzClient::init()
{
    connect( this, SIGNAL( keepAboveChanged( bool )), SLOT( keepAboveChange( bool )));
    connect( this, SIGNAL( keepBelowChanged( bool )), SLOT( keepBelowChange( bool )));

    createMainWidget(WNoAutoErase | WStaticContents);

    widget()->installEventFilter( this );

    // No flicker thanks
    widget()->setBackgroundMode( QWidget::NoBackground );

    // Set button pointers to NULL so we can track things
    for(int i=0; i < QuartzClient::BtnCount; i++)
        button[i] = NULL;

    // Finally, toolWindows look small
    if ( isTool() ) {
        titleHeight  = toolTitleHeight;
        largeButtons = false;
    }
    else {
        titleHeight = normalTitleHeight;
        largeButtons = true;
    }

    borderSize = borderWidth;

    // Pack the fake window window within a grid
    QGridLayout* g = new QGridLayout(widget(), 0, 0, 0);
    g->setResizeMode(QLayout::FreeResize);
    g->addRowSpacing(0, borderSize-1);       // Top grab bar
    if( isPreview())
    g->addWidget(new QLabel( i18n( "<center><b>Quartz</b></center>" ), widget()), 3, 1);
    else
    g->addItem(new QSpacerItem( 0, 0 ), 3, 1); // no widget in the middle

    // without the next line, unshade flickers
    g->addItem( new QSpacerItem( 0, 0, QSizePolicy::Fixed,
                QSizePolicy::Expanding ) );
    g->setRowStretch(3, 10);      // Wrapped window
    g->addRowSpacing(2, 1);       // line under titlebar
    g->addRowSpacing(4, borderSize);       // bottom handles
    g->addColSpacing(0, borderSize);
    g->addColSpacing(2, borderSize);

    // Pack the titlebar HBox with items
    hb = new QBoxLayout(0, QBoxLayout::LeftToRight, 0, 0, 0);
    hb->setResizeMode( QLayout::FreeResize );
    g->addLayout ( hb, 1, 1 );

    addClientButtons( options()->titleButtonsLeft() );

    titlebar = new QSpacerItem( 10, titleHeight, QSizePolicy::Expanding, QSizePolicy::Minimum );
    hb->addItem(titlebar);
    hb->addSpacing(2);

    addClientButtons( options()->titleButtonsRight(), false );

    hb->addSpacing(2);
}

void QuartzClient::reset( unsigned long changed )
{
    if (changed & SettingColors || changed & SettingFont)
    {
        // repaint the whole thing
        widget()->repaint(false);
    }
}

const int SUPPORTED_WINDOW_TYPES_MASK = NET::NormalMask | NET::DesktopMask | NET::DockMask
    | NET::ToolbarMask | NET::MenuMask | NET::DialogMask | NET::OverrideMask | NET::TopMenuMask
    | NET::UtilityMask | NET::SplashMask;

bool QuartzClient::isTool()
{
    NET::WindowType type = windowType( SUPPORTED_WINDOW_TYPES_MASK );
    return ((type==NET::Toolbar)||(type==NET::Utility)||(type==NET::Menu));
}


void QuartzClient::addClientButtons( const QString& s, bool isLeft )
{
    if (s.length() > 0)
        for(unsigned int i = 0; i < s.length(); i++)
        {
            switch( s[i].latin1() )
            {
                // Menu button
                case 'M':
                    if (!button[BtnMenu])
                    {
                        button[BtnMenu] = new QuartzButton(this, "menu",
                                 largeButtons, isLeft, false, NULL, i18n("Menu"), LeftButton|RightButton);
                        connect( button[BtnMenu], SIGNAL(pressed()),
                                 this, SLOT(menuButtonPressed()) );
                        hb->addWidget( button[BtnMenu] );
                    }
                    break;

                // On all desktops button
                case 'S':
                    if (!button[BtnOnAllDesktops])
                    {
                        button[BtnOnAllDesktops] = new QuartzButton(this, "on_all_desktops",
                                 largeButtons, isLeft, true, NULL, isOnAllDesktops()?i18n("Not on all desktops"):i18n("On all desktops"));
                        button[BtnOnAllDesktops]->turnOn( isOnAllDesktops() );
                        connect( button[BtnOnAllDesktops], SIGNAL(clicked()),
                                 this, SLOT(toggleOnAllDesktops()) );
                        hb->addSpacing(1);
                        hb->addWidget( button[BtnOnAllDesktops] );
                        hb->addSpacing(1);
                    }
                    break;

                // Help button
                case 'H':
                    if( providesContextHelp() && (!button[BtnHelp]) )
                    {
                        button[BtnHelp] = new QuartzButton(this, "help",
                                 largeButtons, isLeft, true, question_bits, i18n("Help"));
                        connect( button[BtnHelp], SIGNAL( clicked() ),
                                 this, SLOT(showContextHelp()));
                        hb->addWidget( button[BtnHelp] );
                    }
                    break;

                // Minimize button
                case 'I':
                    if ( (!button[BtnIconify]) && isMinimizable())
                    {
                        button[BtnIconify] = new QuartzButton(this, "iconify",
                                 largeButtons, isLeft, true, iconify_bits, i18n("Minimize"));
                        connect( button[BtnIconify], SIGNAL( clicked()),
                                 this, SLOT(minimize()) );
                        hb->addWidget( button[BtnIconify] );
                    }
                    break;

                // Maximize button
                case 'A':
                    if ( (!button[BtnMax]) && isMaximizable())
                    {
                        button[BtnMax]  = new QuartzButton(this, "maximize",
                                 largeButtons, isLeft, true, maximize_bits, i18n("Maximize"), LeftButton|MidButton|RightButton);
                        connect( button[BtnMax], SIGNAL( clicked()),
                                 this, SLOT(slotMaximize()) );
                        hb->addWidget( button[BtnMax] );
                    }
                    break;

                // Close button
                case 'X':
                    if (!button[BtnClose] && isCloseable())
                    {
                        button[BtnClose] = new QuartzButton(this, "close",
                                 largeButtons, isLeft, true, close_bits, i18n("Close"));
                        connect( button[BtnClose], SIGNAL( clicked()),
                                 this, SLOT(closeWindow()) );
                        hb->addWidget( button[BtnClose] );
                    }
                    break;

                // Above button
                case 'F':
                    if ( (!button[BtnAbove]))
                    {
                        button[BtnAbove]  = new QuartzButton(this, "above",
                                largeButtons, isLeft, true,
                                keepAbove() ? above_on_bits : above_off_bits,
                                i18n("Keep Above Others"));
                        connect( button[BtnAbove], SIGNAL( clicked()),
                                 this, SLOT(slotAbove()) );
                        hb->addWidget( button[BtnAbove] );
                    }
                    break;
                        
                // Below button
                case 'B':
                    if ( (!button[BtnBelow]))
                    {
                        button[BtnBelow]  = new QuartzButton(this, "below",
                                largeButtons, isLeft, true,
                                keepBelow() ? below_on_bits : below_off_bits,
                                i18n("Keep Below Others"));
                        connect( button[BtnBelow], SIGNAL( clicked()),
                                 this, SLOT(slotBelow()) );
                        hb->addWidget( button[BtnBelow] );
                    }
                    break;
                            
                // Shade button
                case 'L':
                    if ( (!button[BtnShade]) && isShadeable())
                    {
                        button[BtnShade]  = new QuartzButton(this, "shade",
                                largeButtons, isLeft, true,
                                isSetShade() ? shade_on_bits : shade_off_bits,
                                isSetShade() ? i18n( "Unshade" ) : i18n("Shade"));
                        connect( button[BtnShade], SIGNAL( clicked()),
                                 this, SLOT(slotShade()) );
                        hb->addWidget( button[BtnShade] );
                    }
                    break;
            }
        }
}


void QuartzClient::iconChange()
{
    if (button[BtnMenu] && button[BtnMenu]->isVisible())
        button[BtnMenu]->repaint(false);
}


void QuartzClient::desktopChange()
{
    if (button[BtnOnAllDesktops])
    {
        button[BtnOnAllDesktops]->turnOn(isOnAllDesktops());
        button[BtnOnAllDesktops]->repaint(false);
        button[BtnOnAllDesktops]->setTipText(isOnAllDesktops() ? i18n("Not on all desktops") : i18n("On all desktops"));
    }
}


void QuartzClient::keepAboveChange( bool above )
{
    if (button[BtnAbove]) {
        button[BtnAbove]->setBitmap( above ? above_on_bits : above_off_bits );
        button[BtnAbove]->repaint(false);
    }
}

        
void QuartzClient::keepBelowChange( bool below )
{
    if (button[BtnBelow]) {
        button[BtnBelow]->setBitmap( below ? below_on_bits : below_off_bits );
        button[BtnBelow]->repaint(false);
    }
}

void QuartzClient::shadeChange()
{
    if (button[BtnShade]) {
        bool on = isShade();
        button[BtnShade]->turnOn(on);
        button[BtnShade]->repaint(false);
        QToolTip::remove( button[BtnShade] );
        QToolTip::add( button[BtnShade], on ? i18n("Unshade") : i18n("Shade"));
    }
}


void QuartzClient::slotMaximize()
{
    if (button[BtnMax])
    {
        maximize(button[BtnMax]->last_button);
    }
}


void QuartzClient::slotAbove()
{
    setKeepAbove( !keepAbove());
    button[BtnAbove]->turnOn(keepAbove());
    button[BtnAbove]->repaint(true);
}

    
void QuartzClient::slotBelow()
{
    setKeepBelow( !keepBelow());
    button[BtnBelow]->turnOn(keepBelow());
    button[BtnBelow]->repaint(true);
}

        
void QuartzClient::slotShade()
{
    setShade( !isSetShade());
    button[BtnShade]->setBitmap(isSetShade() ? shade_on_bits : shade_off_bits );
    button[BtnShade]->repaint(true);
}


void QuartzClient::resizeEvent( QResizeEvent* e)
{
    calcHiddenButtons();

    if (widget()->isVisibleToTLW())
    {
        widget()->update(widget()->rect());
        int dx = 0;
        int dy = 0;

        if ( e->oldSize().width() != width() )
           dx = 32 + QABS( e->oldSize().width() -  width() );

        if ( e->oldSize().height() != height() )
           dy = 8 + QABS( e->oldSize().height() -  height() );

        if ( dy )
           widget()->update( 0, height() - dy + 1, width(), dy );

        if ( dx )
        {
           widget()->update( width() - dx + 1, 0, dx, height() );
           widget()->update( QRect( QPoint(4,4), titlebar->geometry().bottomLeft() - QPoint(1,0) ) );
           widget()->update( QRect( titlebar->geometry().topRight(), QPoint( width() - 4, titlebar->geometry().bottom() ) ) );
           // Titlebar needs no paint event
           widget()->repaint(titlebar->geometry(), false);
        }
    }
}


void QuartzClient::captionChange()
{
    widget()->repaint( titlebar->geometry(), false );
}


// Quartz Paint magic goes here.
void QuartzClient::paintEvent( QPaintEvent* )
{
    // Never paint if the pixmaps have not been created
    if (!quartz_initialized)
        return;

    const bool maxFull = (maximizeMode()==MaximizeFull) && !options()->moveResizeMaximizedWindows();

    QColorGroup g;
    QPainter p(widget());

    // Obtain widget bounds.
    QRect r(widget()->rect());
    int x = r.x();
    int y = r.y();
    int x2 = r.width() - 1;
    int y2 = r.height() - 1;
    int w  = r.width();
    int h  = r.height();

    // Draw part of the frame that is the title color

    if( coloredFrame )
        g = options()->colorGroup(ColorTitleBar, isActive());
    else
        g = options()->colorGroup(ColorFrame, isActive());

    // Draw outer highlights and lowlights
    p.setPen( g.light().light(120) );
    p.drawLine( x, y, x2-1, y );
    p.drawLine( x, y+1, x, y2-1 );
    p.setPen( g.dark().light(120) );
    p.drawLine( x2, y, x2, y2 );
    p.drawLine( x, y2, x2, y2 );

    // Fill out the border edges
    QColor frameColor;
    if ( coloredFrame)
        frameColor = g.background().light(130);
    else
        frameColor = g.background();
    if (borderSize > 2) {
        p.fillRect(x+1, y+1, w-2, borderSize-2, frameColor); // top
        if (!maxFull) {
            p.fillRect(x+1, y+h-(borderSize-1), w-2, borderSize-2, frameColor); // bottom
            p.fillRect(x+1, y+borderSize-1, borderSize-1, h-2*(borderSize-1), frameColor); // left
            p.fillRect(x+w-(borderSize), y+borderSize-1, borderSize-1, h-2*(borderSize-1), frameColor); // right
        }
    }

    // Draw a frame around the wrapped widget.
    p.setPen( g.background() );
    if (maxFull) {
        p.drawLine(x+1, y+titleHeight+(borderSize-1), w-2, y+titleHeight+(borderSize-1));
    } else {
        p.drawRect( x+(borderSize-1), y+titleHeight+(borderSize-1), w-2*(borderSize-1), h-titleHeight-2*(borderSize-1) );
    }

    // Drawing this extra line removes non-drawn areas when shaded
    p.drawLine( x+borderSize, y2-borderSize, x2-borderSize, y2-borderSize);

    // Highlight top corner
    p.setPen( g.light().light(160) );
    p.drawPoint( x, y );
    p.setPen( g.light().light(140) );
    p.drawPoint( x+1, y );
    p.drawPoint( x, y+1 );

    // Draw the title bar.
    // ===================
    r = titlebar->geometry();

    // Obtain titlebar blend colours
    QColor c1 = options()->color(ColorTitleBar, isActive() ).light(130);
    QColor c2 = options()->color(ColorTitleBlend, isActive() );

    // Create a disposable pixmap buffer for the titlebar
    KPixmap* titleBuffer = new KPixmap;
    titleBuffer->resize( maxFull?w-2:(w-2*(borderSize-1)), titleHeight );

    QPainter p2( titleBuffer, this );

    // subtract titleBlocks pixmap width and some
    int rightoffset = r.x()+r.width()-titleBlocks->width()-borderSize;

    p2.fillRect( 0, 0, w, r.height(), c1 );
    p2.fillRect( rightoffset, 0, maxFull?w-rightoffset:w-rightoffset-2*(borderSize-1), r.height(), c2 );

    // 8 bit displays will be a bit dithered, but they still look ok.
    if ( isActive() )
        p2.drawPixmap( rightoffset, 0, *titleBlocks );
    else
        p2.drawPixmap( rightoffset, 0, *ititleBlocks );

    // Draw the title text on the pixmap, and with a smaller font
    // for toolwindows than the default.
    QFont fnt;
    if ( largeButtons ) {
        fnt = options()->font(true, false); // font not small
    } else {
        fnt = options()->font(true, true); // font small
        fnt.setWeight( QFont::Normal ); // and disable bold
    }
    p2.setFont( fnt );

    p2.setPen( options()->color(ColorFont, isActive() ));
    p2.drawText(r.x()+4-borderSize, 0, r.width()-3, r.height(),
                AlignLeft | AlignVCenter, caption() );
    p2.end();

    p.drawPixmap( maxFull?1:borderSize-1, borderSize-1, *titleBuffer );

    delete titleBuffer;
}


void QuartzClient::showEvent(QShowEvent *)
{
    calcHiddenButtons();
    widget()->show();
}


void QuartzClient::mouseDoubleClickEvent( QMouseEvent * e )
{
    if (titlebar->geometry().contains( e->pos() ) )
       titlebarDblClickOperation();
}


void QuartzClient::maximizeChange()
{
    if (button[BtnMax]) {
        button[BtnMax]->setBitmap((maximizeMode()==MaximizeFull) ? minmax_bits : maximize_bits);
        button[BtnMax]->setTipText((maximizeMode()==MaximizeFull) ? i18n("Restore") : i18n("Maximize"));
    }
}


void QuartzClient::activeChange()
{
    for(int i=QuartzClient::BtnHelp; i < QuartzClient::BtnCount; i++)
        if(button[i])
            button[i]->repaint(false);

    widget()->repaint(false);
}


QuartzClient::Position QuartzClient::mousePosition(const QPoint &point) const
{
    const int corner = 3*borderSize/2 + 18;
    Position pos = PositionCenter;

    QRect r(widget()->rect());

    if(point.y() < (borderSize-1)) {
        if(point.x() < corner)                   return PositionTopLeft;
        else if(point.x() > (r.right()-corner))  return PositionTopRight;
        else                                     return PositionTop;
    } else if(point.y() > (r.bottom()-borderSize)) {
        if(point.x() < corner)                   return PositionBottomLeft;
        else if(point.x() > (r.right()-corner))  return PositionBottomRight;
        else                                     return PositionBottom;
    } else if(point.x() < borderSize) {
        if(point.y() < corner)                   return PositionTopLeft;
        else if(point.y() > (r.bottom()-corner)) return PositionBottomLeft;
        else                                     return PositionLeft;
    } else if(point.x() > (r.right()-borderSize)) {
        if(point.y() < corner)                   return PositionTopRight;
        else if(point.y() > (r.bottom()-corner)) return PositionBottomRight;
        else                                     return PositionRight;
    }

    return pos;
}


void QuartzClient::borders(int& left, int& right, int& top, int& bottom) const
{
    left = borderSize;
    right = borderSize;
    top =  1 + titleHeight + (borderSize-1);
    bottom = borderSize;

    if ((maximizeMode()==MaximizeFull) && !options()->moveResizeMaximizedWindows()) {
        left = right = bottom = 0;
        top = 1 + titleHeight + (borderSize-1);
    }
}


void QuartzClient::resize( const QSize& s )
{
    widget()->resize( s );
}


QSize QuartzClient::minimumSize() const
{
    return widget()->minimumSize();
}


// The hiding button while shrinking, show button while expanding magic
void QuartzClient::calcHiddenButtons()
{
    //Hide buttons in this order:
    //Shade, Below, Above, OnAllDesktops, Help, Maximize, Menu, Minimize, Close.
    QuartzButton* btnArray[] = { button[BtnShade], button[BtnBelow], button[BtnAbove],
                                 button[BtnOnAllDesktops], button[BtnHelp], button[BtnMax],
                                 button[BtnMenu], button[BtnIconify], button[BtnClose] };
    const int buttons_cnt = sizeof( btnArray ) / sizeof( btnArray[ 0 ] );

    int minwidth  = largeButtons ? 180 : 140;   // Start hiding buttons at this width
    int btn_width = largeButtons ? 16 : 10;
    int current_width = width();
    int count = 0;
    int i;

    // Find out how many buttons we have to hide.
    while (current_width < minwidth)
    {
        current_width += btn_width;
        count++;
    }

    // Bound the number of buttons to hide
    if (count > buttons_cnt) count = buttons_cnt;

    // Hide the required buttons...
    for(i = 0; i < count; i++)
    {
        if (btnArray[i] && btnArray[i]->isVisible() )
            btnArray[i]->hide();
    }

    // Show the rest of the buttons...
    for(i = count; i < buttons_cnt; i++)
    {
        if (btnArray[i] && (!btnArray[i]->isVisible()) )
            btnArray[i]->show();
    }
}


// Make sure the menu button follows double click conventions set in kcontrol
void QuartzClient::menuButtonPressed()
{
    QRect menuRect = button[BtnMenu]->rect();
    QPoint menuTop ( menuRect.topLeft() );
    QPoint menuBottom ( menuRect.bottomRight() );
    menuTop += QPoint(-1, 2);
    menuBottom += QPoint(1, 2);
    menuTop = button[BtnMenu]->mapToGlobal( menuTop );
    menuBottom = button[BtnMenu]->mapToGlobal( menuBottom );
    KDecorationFactory* f = factory();
    showWindowMenu(QRect(menuTop, menuBottom));
    if( !f->exists( this )) // 'this' was destroyed
        return;
    button[BtnMenu]->setDown(false);
}

bool QuartzClient::eventFilter( QObject* o, QEvent* e )
{
    if( o != widget())
    return false;
    switch( e->type())
    {
    case QEvent::Resize:
        resizeEvent(static_cast< QResizeEvent* >( e ) );
        return true;
    case QEvent::Paint:
        paintEvent(static_cast< QPaintEvent* >( e ) );
        return true;
    case QEvent::MouseButtonDblClick:
        mouseDoubleClickEvent(static_cast< QMouseEvent* >( e ) );
        return true;
    case QEvent::MouseButtonPress:
        processMousePressEvent(static_cast< QMouseEvent* >( e ) );
        return true;
    default:
        break;
    }
    return false;
}

}

// Extended KWin plugin interface
extern "C"
{
    KDecorationFactory *create_factory()
    {
        Quartz::clientHandler = new Quartz::QuartzHandler();
        return Quartz::clientHandler;
    }
}



#include "quartz.moc"
// vim: ts=4

This file is part of the documentation for kwin Library Version 3.3.0.

Documentation copyright © 1996-2004 the KDE developers.
Generated on Sat Sep 25 20:35:06 2004 by doxygen 1.3.8-20040913 written by Dimitri van Heesch, © 1997-2003