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kwin/clients/oxygen/oxygenclient.cpp
Hugo Pereira Da Costa 8244e7644f Changed nitrogen class names and file names into oxygen; adding Oxygen namespace where missing; updated CMakeFiles.txt accordingly 
svn path=/trunk/KDE/kdebase/workspace/; revision=1023654
2009-09-15 07:12:54 +00:00

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//////////////////////////////////////////////////////////////////////////////
// oxygenclient.cpp
// -------------------
//
// Copyright (c) 2009 Hugo Pereira Da Costa <hugo.pereira@free.fr>
// Copyright (c) 2006, 2007 Casper Boemann <cbr@boemann.dk>
// Copyright (c) 2006, 2007 Riccardo Iaconelli <riccardo@kde.org>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//////////////////////////////////////////////////////////////////////////////
#include <cassert>
#include <cmath>
#include <iostream>
#include <kdeversion.h>
#include <KGlobal>
#include <KLocale>
#include <KColorUtils>
#include <KDebug>
#include <QLabel>
#include <QPainter>
#include <QTextStream>
#include <QApplication>
#include "oxygen.h"
#include "oxygenbutton.h"
#include "oxygenclient.h"
#include "oxygenclient.moc"
#include "oxygensizegrip.h"
using namespace std;
namespace Oxygen
{
K_GLOBAL_STATIC_WITH_ARGS(OxygenHelper, globalHelper, ("oxygenDeco"))
//___________________________________________
OxygenHelper *oxygenHelper()
{ return globalHelper; }
//___________________________________________
static void oxkwincleanupBefore()
{
OxygenHelper *h = globalHelper;
h->invalidateCaches();
}
//___________________________________________
void renderDot(QPainter *p, const QPointF &point, qreal diameter)
{
p->drawEllipse(QRectF(point.x()-diameter/2, point.y()-diameter/2, diameter, diameter));
}
//___________________________________________
OxygenClient::OxygenClient(KDecorationBridge *b, KDecorationFactory *f):
KCommonDecorationUnstable(b, f),
colorCacheInvalid_(true),
sizeGrip_( 0 ),
inactiveShadowTiles_( 0 ),
activeShadowTiles_( 0 ),
helper_(*globalHelper),
initialized_( false )
{ qAddPostRoutine(oxkwincleanupBefore); }
//___________________________________________
OxygenClient::~OxygenClient()
{
// delete sizegrip if any
if( hasSizeGrip() ) deleteSizeGrip();
// delete tilesets
if( inactiveShadowTiles_ ) delete inactiveShadowTiles_;
if( activeShadowTiles_ ) delete activeShadowTiles_;
}
//___________________________________________
QString OxygenClient::visibleName() const
{ return i18n("Oxygen"); }
//___________________________________________
void OxygenClient::init()
{
KCommonDecoration::init();
widget()->setAttribute(Qt::WA_NoSystemBackground );
widget()->setAutoFillBackground( false );
initialized_ = true;
// in case of preview, one wants to make the label used
// for the central widget transparent. This allows one to have
// the correct background (with gradient) rendered
// Remark: this is minor (and safe) a hack.
// This should be moved upstream (into kwin/lib/kdecoration)
if( isPreview() )
{
QList<QLabel*> children( widget()->findChildren<QLabel*>() );
for( QList<QLabel*>::iterator iter = children.begin(); iter != children.end(); iter++ )
{ (*iter)->setAutoFillBackground( false ); }
}
resetConfiguration();
}
//___________________________________________
void OxygenClient::reset( unsigned long changed )
{
if( changed & SettingCompositing )
{
updateWindowShape();
widget()->update();
}
KCommonDecorationUnstable::reset( changed );
}
//___________________________________________
bool OxygenClient::isMaximized() const
{ return maximizeMode()==MaximizeFull && !options()->moveResizeMaximizedWindows(); }
//___________________________________________
bool OxygenClient::decorationBehaviour(DecorationBehaviour behaviour) const
{
switch (behaviour)
{
case DB_MenuClose:
return true;
case DB_WindowMask:
return false;
default:
return KCommonDecoration::decorationBehaviour(behaviour);
}
}
//___________________________________________
int OxygenClient::layoutMetric(LayoutMetric lm, bool respectWindowState, const KCommonDecorationButton *btn) const
{
bool maximized( isMaximized() );
int frameBorder( configuration().frameBorder() );
// used to increase hit area on the sides of the widget
int extraBorder = (maximized && compositingActive()) ? 0 : EXTENDED_HITAREA;
int buttonSize( configuration().buttonSize() );
switch (lm)
{
case LM_BorderLeft:
case LM_BorderRight:
case LM_BorderBottom:
{
int border( 0 );
if (respectWindowState && maximized) {
border = 0;
} else if( lm == LM_BorderBottom && frameBorder >= OxygenConfiguration::BorderNoSide ) {
// for tiny border, the convention is to have a larger bottom area in order to
// make resizing easier
border = qMax(frameBorder, 4);
} else if( configuration().frameBorder() == OxygenConfiguration::BorderNone && isPreview() && !compositingActive() ) {
border = 1;
} else if( frameBorder < OxygenConfiguration::BorderTiny ) {
border = 0;
} else {
border = frameBorder;
}
return border + extraBorder;
}
case LM_TitleEdgeTop:
{
int border = 0;
if( !( respectWindowState && maximized ))
{
border = TFRAMESIZE;
if( configuration().drawTitleOutline() ) border += HFRAMESIZE/2;
}
return border + extraBorder;
}
case LM_TitleEdgeBottom:
{
if( configuration().drawTitleOutline() ) return HFRAMESIZE/2;
else return 0;
}
case LM_TitleEdgeLeft:
case LM_TitleEdgeRight:
{
int border = 0;
if( !(respectWindowState && maximized) )
{ border = 6; }
return border + extraBorder;
}
case LM_TitleBorderLeft:
case LM_TitleBorderRight:
{
int border = 5;
if( configuration().drawTitleOutline() ) border += 2*HFRAMESIZE;
return border;
}
case LM_ButtonWidth:
case LM_ButtonHeight:
case LM_TitleHeight:
{
if (respectWindowState && isToolWindow()) {
return buttonSize;
} else {
return buttonSize;
}
}
case LM_ButtonSpacing:
return 1;
case LM_ButtonMarginTop:
return 0;
// outer margin for shadow/glow
case LM_OuterPaddingLeft:
case LM_OuterPaddingRight:
case LM_OuterPaddingTop:
case LM_OuterPaddingBottom:
return OxygenFactory::shadowSize() - extraBorder;
default:
return KCommonDecoration::layoutMetric(lm, respectWindowState, btn);
}
}
//_________________________________________________________
KCommonDecorationButton *OxygenClient::createButton(::ButtonType type)
{
switch (type) {
case MenuButton:
return new OxygenButton(*this, i18n("Menu"), ButtonMenu);
case HelpButton:
return new OxygenButton(*this, i18n("Help"), ButtonHelp);
case MinButton:
return new OxygenButton(*this, i18n("Minimize"), ButtonMin);
case MaxButton:
return new OxygenButton(*this, i18n("Maximize"), ButtonMax);
case CloseButton:
return new OxygenButton(*this, i18n("Close"), ButtonClose);
case AboveButton:
return new OxygenButton(*this, i18n("Keep Above Others"), ButtonAbove);
case BelowButton:
return new OxygenButton(*this, i18n("Keep Below Others"), ButtonBelow);
case OnAllDesktopsButton:
return new OxygenButton(*this, i18n("On All Desktops"), ButtonSticky);
case ShadeButton:
return new OxygenButton(*this, i18n("Shade Button"), ButtonShade);
default:
return 0;
}
}
//_________________________________________________________
QColor reduceContrast(const QColor &c0, const QColor &c1, double t)
{
double s = KColorUtils::contrastRatio(c0, c1);
if (s < t)
return c1;
double l = 0.0, h = 1.0;
double x = s, a;
QColor r = c1;
for (int maxiter = 16; maxiter; --maxiter)
{
a = 0.5 * (l + h);
r = KColorUtils::mix(c0, c1, a);
x = KColorUtils::contrastRatio(c0, r);
if (fabs(x - t) < 0.01) break;
if (x > t) h = a;
else l = a;
}
return r;
}
//_________________________________________________________
QRegion OxygenClient::calcMask( void ) const
{
if( isMaximized() )
{ return widget()->rect(); }
QRect frame( widget()->rect() );
// dimensions
int w=frame.width();
int h=frame.height();
// multipliers
int left = 1;
int right = 1;
int top = 1;
int bottom = 1;
// disable bottom corners when border frame is too small and window is not shaded
if( configuration().frameBorder() == OxygenConfiguration::BorderNone && !isShade() ) bottom = 0;
int sw = layoutMetric( LM_OuterPaddingLeft );
int sh = layoutMetric( LM_OuterPaddingTop );
w -= sw + layoutMetric( LM_OuterPaddingRight );
h -= sh + layoutMetric( LM_OuterPaddingBottom );
QRegion mask(sw + 4*left, sh + 0*top, w-4*(left+right), h-0*(top+bottom));
mask += QRegion(sw + 0*left, sh + 4*top, w-0*(left+right), h-4*(top+bottom));
mask += QRegion(sw + 2*left, sh + 1*top, w-2*(left+right), h-1*(top+bottom));
mask += QRegion(sw + 1*left, sh + 2*top, w-1*(left+right), h-2*(top+bottom));
return mask;
}
//_________________________________________________________
QColor OxygenClient::titlebarTextColor(const QPalette &palette)
{
if( configuration().drawTitleOutline() )
{
return options()->color(ColorFont, isActive());
} else if (isActive()) {
return palette.color(QPalette::Active, QPalette::WindowText);
} else {
if(colorCacheInvalid_)
{
QColor ab = palette.color(QPalette::Active, QPalette::Window);
QColor af = palette.color(QPalette::Active, QPalette::WindowText);
QColor nb = palette.color(QPalette::Inactive, QPalette::Window);
QColor nf = palette.color(QPalette::Inactive, QPalette::WindowText);
colorCacheInvalid_ = false;
cachedTitlebarTextColor_ = reduceContrast(nb, nf, qMax(qreal(2.5), KColorUtils::contrastRatio(ab, KColorUtils::mix(ab, af, 0.4))));
}
return cachedTitlebarTextColor_;
}
}
//_________________________________________________________
void OxygenClient::renderWindowBackground( QPainter* painter, const QRect& rect, const QWidget* widget, const QPalette& palette ) const
{
if( configuration().blendColor() == OxygenConfiguration::NoBlending )
{
painter->fillRect( rect, palette.color( widget->window()->backgroundRole() ) );
} else {
int offset = layoutMetric( LM_OuterPaddingTop );
int height = 64 + configuration().buttonSize() - 22;
const QWidget* window( isPreview() ? OxygenClient::widget() : widget->window() );
helper().renderWindowBackground(painter, rect, widget, window, palette, offset, height );
}
}
//_________________________________________________________
void OxygenClient::renderWindowBorder( QPainter* painter, const QRect& clipRect, const QWidget* widget, const QPalette& palette ) const
{
const QWidget* window = (isPreview()) ? OxygenClient::widget() : widget->window();
// get coordinates relative to the client area
// this is annoying. One could use mapTo if this was taking const QWidget* and not
// const QWidget* as argument.
const QWidget* w = widget;
QPoint position( 0, 0 );
while ( w != window && !w->isWindow() && w != w->parentWidget() ) {
position += w->geometry().topLeft();
w = w->parentWidget();
}
// save painter
painter->save();
if (clipRect.isValid()) {
painter->setClipRegion(clipRect,Qt::IntersectClip);
}
QRect r = (isPreview()) ? OxygenClient::widget()->rect():window->rect();
r.adjust( OxygenFactory::shadowSize(), OxygenFactory::shadowSize(), -OxygenFactory::shadowSize(), -OxygenFactory::shadowSize() );
r.adjust(0,0, 1, 1);
// mask and painting frame
QRegion mask;
QRect frame;
// top line
{
int shadow_size = 5;
int height = HFRAMESIZE;
QRect rect( r.topLeft()-position, QSize( r.width(), height ) );
helper().slab( palette.color( widget->backgroundRole() ), 0, shadow_size )->render( rect.adjusted(-shadow_size-1, 0, shadow_size+1, 2 ), painter, TileSet::Bottom );
mask += rect;
frame |= rect;
}
// bottom line
if( configuration().frameBorder() > OxygenConfiguration::BorderNone )
{
int height = qMin( HFRAMESIZE, layoutMetric( LM_BorderBottom ) );
QRect rect( r.bottomLeft()-position-QPoint(0,height), QSize( r.width(), height ) );
mask += rect;
frame |= rect;
}
// left and right
if( configuration().frameBorder() >= OxygenConfiguration::BorderTiny )
{
// left
{
int width = qMin( HFRAMESIZE, layoutMetric( LM_BorderLeft ) );
QRect rect( r.topLeft()-position, QSize( width, r.height() ) );
mask += rect;
frame |= rect;
}
// right
{
int width = qMin( HFRAMESIZE, layoutMetric( LM_BorderRight ) );
QRect rect( r.topRight()-position-QPoint(width,0), QSize( width, r.height() ) );
mask += rect;
frame |= rect;
}
}
// paint
painter->setClipRegion( mask, Qt::IntersectClip);
renderWindowBackground(painter, frame, widget, palette );
// restore painter
painter->restore();
}
//_________________________________________________________
void OxygenClient::renderTitleOutline( QPainter* painter, const QRect& rect, const QPalette& palette ) const
{
// shadow
{
int shadow_size = 7;
int voffset = -shadow_size;
if( !isMaximized() ) voffset += HFRAMESIZE;
helper().slab( palette.color( widget()->backgroundRole() ), 0, shadow_size )->render( rect.adjusted(0, voffset, 0, 0 ), painter, TileSet::Bottom|TileSet::Left|TileSet::Right );
}
// center
{
int voffset = isMaximized() ? 0:HFRAMESIZE;
renderWindowBackground(painter, rect.adjusted( 4, voffset, -4, -4 ), widget(), palette );
}
}
//_________________________________________________________
void OxygenClient::activeChange( void )
{
// update size grip so that it gets the right color
if( hasSizeGrip() )
{
sizeGrip().activeChange();
sizeGrip().update();
}
KCommonDecorationUnstable::activeChange();
}
//_________________________________________________________
void OxygenClient::maximizeChange( void )
{
if( hasSizeGrip() ) sizeGrip().setVisible( !( isShade() || isMaximized() ) );
KCommonDecorationUnstable::maximizeChange();
}
//_________________________________________________________
void OxygenClient::shadeChange( void )
{
if( hasSizeGrip() ) sizeGrip().setVisible( !( isShade() || isMaximized() ) );
KCommonDecorationUnstable::shadeChange();
}
//_________________________________________________________
QPalette OxygenClient::backgroundPalette( const QWidget* widget, QPalette palette ) const
{
if( configuration().drawTitleOutline() && isActive() )
{ palette.setColor( widget->window()->backgroundRole(), options()->color( KDecorationDefines::ColorTitleBar, true ) ); }
return palette;
}
//________________________________________________________________
void OxygenClient::updateWindowShape()
{
if(isMaximized() || compositingActive() )
{
clearMask();
} else {
setMask( calcMask() );
}
}
//___________________________________________
void OxygenClient::resetConfiguration( void )
{
if( !initialized_ ) return;
configuration_ = OxygenFactory::configuration( *this );
// handle size grip
if( configuration_.drawSizeGrip() )
{
if( !hasSizeGrip() ) createSizeGrip();
} else if( hasSizeGrip() ) deleteSizeGrip();
}
//_________________________________________________________
void OxygenClient::paintEvent( QPaintEvent* event )
{
// factory
if(!( initialized_ && OxygenFactory::initialized() ) ) return;
// palette
QPalette palette = widget()->palette();
palette.setCurrentColorGroup( (isActive() ) ? QPalette::Active : QPalette::Inactive );
// painter
QPainter painter(widget());
painter.setClipRegion( event->region() );
// define frame
QRect frame = widget()->rect();
// base color
QColor color = palette.window().color();
// draw shadows
if( compositingActive() && !isMaximized() )
{
shadowTiles(
backgroundPalette( widget(), palette ).color( widget()->backgroundRole() ),
isActive() )->render( frame.adjusted( 4, 4, -4, -4),
&painter, TileSet::Ring);
}
// adjust frame
frame.adjust( OxygenFactory::shadowSize(), OxygenFactory::shadowSize(), -OxygenFactory::shadowSize(), -OxygenFactory::shadowSize() );
// adjust mask
if( compositingActive() || isPreview() )
{
if( isMaximized() ) {
painter.setClipRect( frame, Qt::IntersectClip );
} else {
int x, y, w, h;
frame.getRect(&x, &y, &w, &h);
// multipliers
int left = 1;
int right = 1;
int top = 1;
int bottom = 1;
// disable bottom corners when border frame is too small and window is not shaded
if( configuration().frameBorder() == OxygenConfiguration::BorderNone && !isShade() ) bottom = 0;
QRegion mask( x+5*left, y+0*top, w-5*(left+right), h-0*(top+bottom));
mask += QRegion(x+0*left, y+5*top, w-0*(left+right), h-5*(top+bottom));
mask += QRegion(x+2*left, y+2*top, w-2*(left+right), h-2*(top+bottom));
mask += QRegion(x+3*left, y+1*top, w-3*(left+right), h-1*(top+bottom));
mask += QRegion(x+1*left, y+3*top, w-1*(left+right), h-3*(top+bottom));
// in no-border configuration, an extra pixel is added to the mask
// in order to get the corners color right in case of title highlighting.
if( configuration().frameBorder() == OxygenConfiguration::BorderNone )
{ mask += QRegion(x+0*left, y+4*top, w-0*(left+right), h-4*(top+bottom)); }
painter.setClipRegion( mask, Qt::IntersectClip );
}
}
// window background
renderWindowBackground( &painter, frame, widget(), palette );
if( isActive() && configuration().drawTitleOutline() && !isMaximized() )
{
renderWindowBorder( &painter, frame, widget(), backgroundPalette( widget(), palette ) );
}
// clipping
if( compositingActive() ) painter.setClipping(false);
// in preview mode and when frame border is 0,
// one still draw a small rect around, unless kde is recent enough,
// useOxygenShadow is set to true,
// and copositing is active
// (that makes a lot of ifs)
if( isPreview() && configuration().frameBorder() == OxygenConfiguration::BorderNone && !compositingActive() )
{
painter.save();
painter.setBrush( Qt::NoBrush );
painter.setPen( QPen( helper().calcDarkColor( widget()->palette().window().color() ), 1 ) );
QPainterPath path;
QPoint first( frame.topLeft()+QPoint( 0, 6 ) );
path.moveTo( first );
path.quadTo( frame.topLeft(), frame.topLeft()+QPoint( 6, 0 ) );
path.lineTo( frame.topRight()-QPoint( 6, 0 ) );
path.quadTo( frame.topRight(), frame.topRight()+QPoint( 0, 6 ) );
path.lineTo( frame.bottomRight() );
path.lineTo( frame.bottomLeft() );
path.lineTo( first );
painter.drawPath( path );
painter.restore();
}
int extraBorder = ( isMaximized() && compositingActive() ) ? 0 : EXTENDED_HITAREA;
// dimensions
const int titleHeight = layoutMetric(LM_TitleHeight);
const int titleTop = layoutMetric(LM_TitleEdgeTop) + frame.top() - extraBorder;
const int titleEdgeLeft = layoutMetric(LM_TitleEdgeLeft);
const int marginLeft = layoutMetric(LM_TitleBorderLeft);
const int marginRight = layoutMetric(LM_TitleBorderRight);
const int titleLeft = frame.left() + titleEdgeLeft + buttonsLeftWidth() + marginLeft;
const int titleWidth = frame.width() -
titleEdgeLeft - layoutMetric(LM_TitleEdgeRight) -
buttonsLeftWidth() - buttonsRightWidth() -
marginLeft - marginRight;
QRect titleRect( titleLeft, titleTop-1, titleWidth, titleHeight );
painter.setFont( options()->font(isActive(), false) );
if( isActive() && configuration().drawTitleOutline() )
{
// get title bounding rect
QRect boundingRect = painter.boundingRect( titleRect, configuration().titleAlignment() | Qt::AlignVCenter, caption() );
// adjust
boundingRect.setTop( frame.top() );
boundingRect.setBottom( titleTop+titleHeight );
boundingRect.setLeft( qMax( boundingRect.left(), titleLeft ) - 2*HFRAMESIZE );
boundingRect.setRight( qMin( boundingRect.right(), titleLeft + titleWidth ) + 2*HFRAMESIZE );
renderTitleOutline( &painter, boundingRect, backgroundPalette( widget(), palette ) );
}
// draw title text
painter.setPen( titlebarTextColor( backgroundPalette( widget(), palette ) ) );
painter.drawText( titleRect, configuration().titleAlignment() | Qt::AlignVCenter, caption() );
painter.setRenderHint(QPainter::Antialiasing);
// adjust if there are shadows
if (compositingActive()) frame.adjust(-1,-1, 1, 1);
// dimensions
int x,y,w,h;
frame.getRect(&x, &y, &w, &h);
// separator
if( drawSeparator() )
{ helper().drawSeparator(&painter, QRect(x, titleTop+titleHeight-1.5, w, 2), color, Qt::Horizontal); }
// shadow and resize handles
if( configuration().frameBorder() >= OxygenConfiguration::BorderTiny && !isMaximized() )
{
helper().drawFloatFrame(
&painter, frame, backgroundPalette( widget(), palette ).color( widget()->backgroundRole() ),
!compositingActive(), isActive(),
KDecoration::options()->color(ColorTitleBar)
);
if( isResizable() && !isShade() )
{
// Draw the 3-dots resize handles
qreal cenY = h / 2 + x + 0.5;
qreal posX = w + y - 2.5;
painter.setPen(Qt::NoPen);
painter.setBrush(QColor(0, 0, 0, 66));
renderDot(&painter, QPointF(posX, cenY - 3), 1.8);
renderDot(&painter, QPointF(posX, cenY), 1.8);
renderDot(&painter, QPointF(posX, cenY + 3), 1.8);
}
// Draw the 3-dots resize handles
if( isResizable() && !isShade() && !configuration().drawSizeGrip() )
{
painter.setPen(Qt::NoPen);
painter.setBrush(QColor(0, 0, 0, 66));
painter.translate(x + w-9, y + h-9);
renderDot(&painter, QPointF(2.5, 6.5), 1.8);
renderDot(&painter, QPointF(5.5, 5.5), 1.8);
renderDot(&painter, QPointF(6.5, 2.5), 1.8);
}
}
}
//________________________________________________________________
OxygenConfiguration OxygenClient::configuration( void ) const
{ return configuration_; }
//_________________________________________________________________
void OxygenClient::createSizeGrip( void )
{
assert( !hasSizeGrip() );
if( ( isResizable() && windowId() != 0 ) || isPreview() )
{
sizeGrip_ = new OxygenSizeGrip( this );
sizeGrip().setVisible( !( isMaximized() || isShade() ) );
}
}
//_________________________________________________________________
void OxygenClient::deleteSizeGrip( void )
{
assert( hasSizeGrip() );
sizeGrip_->deleteLater();
sizeGrip_ = 0;
}
//_________________________________________________________________
TileSet *OxygenClient::shadowTiles(const QColor& color, bool active)
{
OxygenShadowConfiguration shadowConfiguration( OxygenFactory::shadowConfiguration( active && useOxygenShadows() ) );
ShadowTilesOption opt;
opt.active = active;
opt.width = shadowConfiguration.shadowSize();
opt.windowColor = color;
opt.innerColor = shadowConfiguration.innerColor();
ShadowTilesOption currentOpt = active ? activeShadowTilesOption_:inactiveShadowTilesOption_;
bool optionChanged = !(currentOpt == opt );
if (active && activeShadowTiles_ )
{
if( optionChanged) delete activeShadowTiles_;
else return activeShadowTiles_;
} else if (!active && inactiveShadowTiles_ ) {
if( optionChanged ) delete inactiveShadowTiles_;
else return inactiveShadowTiles_;
}
kDebug( 1212 ) << " creating tiles - active: " << active << endl;
TileSet *tileSet = 0;
//
qreal size( OxygenFactory::shadowSize() );
if( active && configuration().drawTitleOutline() && configuration().frameBorder() == OxygenConfiguration::BorderNone )
{
// a more complex tile set is needed for the configuration above:
// top corners must be beveled with the "active titlebar color" while
// bottom corners must be beveled with the "window background color".
// this requires generating two shadow pixmaps and tiling them in the tileSet.
QPixmap shadow = QPixmap( size*2, size*2 );
shadow.fill( Qt::transparent );
QPainter p( &shadow );
p.setRenderHint( QPainter::Antialiasing );
QPixmap shadowTop = shadowPixmap( color, active );
QRect topRect( shadow.rect() );
topRect.setBottom( int( size )-1 );
p.setClipRect( topRect );
p.drawPixmap( QPointF( 0, 0 ), shadowTop );
QPixmap shadowBottom = shadowPixmap( widget()->palette().color( widget()->backgroundRole() ), active );
QRect bottomRect( shadow.rect() );
bottomRect.setTop( int( size ) );
p.setClipRect( bottomRect );
p.drawPixmap( QPointF( 0, 0 ), shadowBottom );
p.end();
tileSet = new TileSet( shadow, size, size, 1, 1);
} else {
tileSet = new TileSet(
shadowPixmap( color, active ),
size, size, 1, 1);
}
// store option and style
if( active )
{
activeShadowTilesOption_ = opt;
activeShadowTiles_ = tileSet;
} else {
inactiveShadowTilesOption_ = opt;
inactiveShadowTiles_ = tileSet;
}
return tileSet;
}
//_________________________________________________________________
QPixmap OxygenClient::shadowPixmap(const QColor& color, bool active ) const
{
OxygenShadowConfiguration shadowConfiguration( OxygenFactory::shadowConfiguration( active && useOxygenShadows() ) );
static const qreal fixedSize = 25.5;
qreal size( OxygenFactory::shadowSize() );
qreal shadowSize( shadowConfiguration.shadowSize() );
QPixmap shadow = QPixmap( size*2, size*2 );
shadow.fill( Qt::transparent );
QPainter p( &shadow );
p.setRenderHint( QPainter::Antialiasing );
p.setPen( Qt::NoPen );
qreal hoffset = shadowConfiguration.horizontalOffset();
qreal voffset = shadowConfiguration.verticalOffset();
// this is the size of the shadow for which
// the following gradients have been originally calculated
if( active && useOxygenShadows() )
{
{
// all gradients are constructed in the same way
// values are alpha channels for all gradients "pin-points"
// positions are gradient pin-points, originally calculated
// for a total gradient size of 25.5 (fixedSize)
//
// To scale these with the actual shadow size, one must:
// 1- keep the first pin-point unscaled (because it matches the window corner)
// 2- make the last pin-point full-scaled (i.e grow 1:1 with shadow size)
// intermediate pin-points are a linear interpolation between the two
//
// Note: this strategy does not work if first pin-point end up being larger than last.
// when this is the case the gradient is simpy disabled
int values[5] = {255, 220, 180, 25, 0};
qreal x[5] = {4.4, 4.5, 5, 5.5, 6.5};
qreal a = (x[4]/fixedSize - x[0]/shadowSize)/(x[4]-x[0]);
if( a > 0 )
{
qreal b = x[0]*x[4]*(1.0/shadowSize - 1.0/fixedSize)/(x[4]-x[0]);
QRadialGradient rg( size, size, shadowSize );
QColor c = color;
for( int i = 0; i<5; i++ )
{ c.setAlpha( values[i] ); rg.setColorAt( a*x[i]+b, c ); }
p.setBrush( rg );
p.drawRect( shadow.rect() );
}
}
{
int values[7] = { 0.58*255, 0.43*255, 0.30*255, 0.22*255, 0.15*255, 0.08*255, 0 };
qreal x[7] = {4.5, 5.5, 6.5, 7.5, 8.5, 11.5, 14.4};
qreal a = (x[6]/fixedSize - x[0]/shadowSize)/(x[6]-x[0]);
if( a > 0 )
{
qreal b = x[0]*x[6]*(1.0/shadowSize - 1.0/fixedSize)/(x[6]-x[0]);
QRadialGradient rg(
size+hoffset,
size+voffset,
shadowSize );
QColor c = shadowConfiguration.innerColor();
for( int i = 0; i<7; i++ )
{ c.setAlpha( values[i] ); rg.setColorAt( a*x[i]+b, c ); }
p.setBrush( rg );
p.drawRect( shadow.rect() );
}
}
{
QRadialGradient rg = QRadialGradient( size, size, size );
QColor c = color;
c.setAlpha( 255 ); rg.setColorAt( 4.0/size, c );
c.setAlpha( 0 ); rg.setColorAt( 4.01/size, c );
p.setBrush( rg );
p.drawRect( shadow.rect() );
}
} else {
{
int values[8] = { 0.12*255, 0.11*255, 0.075*255, 0.06*255, 0.035*255, 0.025*255, 0.01*255, 0 };
qreal x[8] = {4.5, 6.6, 8.5, 11.5, 14.5, 17.5, 21.5, 25.5 };
qreal a = (x[7]/fixedSize - x[0]/shadowSize)/(x[7]-x[0]);
if( a > 0 )
{
qreal b = x[0]*x[7]*(1.0/shadowSize - 1.0/fixedSize)/(x[7]-x[0]);
QRadialGradient rg = QRadialGradient(
size+20.0*hoffset,
size+20.0*voffset,
shadowSize );
QColor c = shadowConfiguration.outerColor();
for( int i = 0; i<8; i++ )
{ c.setAlpha( values[i] ); rg.setColorAt( a*x[i]+b, c ); }
p.setBrush( rg );
p.drawRect( shadow.rect() );
}
}
{
int values[6] = { 0.25*255, 0.20*255, 0.13*255, 0.06*255, 0.015*255, 0 };
qreal x[6] = {4.5, 5.5, 7.5, 8.5, 11.5, 14.5 };
qreal a = (x[5]/fixedSize - x[0]/shadowSize)/(x[5]-x[0]);
if( a > 0 )
{
qreal b = x[0]*x[5]*(1.0/shadowSize - 1.0/fixedSize)/(x[5]-x[0]);
QRadialGradient rg = QRadialGradient(
size+10.0*hoffset,
size+10.0*voffset,
shadowSize );
QColor c = shadowConfiguration.midColor();
for( int i = 0; i<6; i++ )
{ c.setAlpha( values[i] ); rg.setColorAt( a*x[i]+b, c ); }
p.setBrush( rg );
p.drawRect( shadow.rect() );
}
}
{
int values[4] = { 0.32*255, 0.22*255, 0.03*255, 0 };
qreal x[4] = { 4.5, 5.0, 5.5, 6.5 };
qreal a = (x[3]/fixedSize - x[0]/shadowSize)/(x[3]-x[0]);
if( a > 0 )
{
qreal b = x[0]*x[3]*(1.0/shadowSize - 1.0/fixedSize)/(x[3]-x[0]);
QRadialGradient rg = QRadialGradient(
size+hoffset,
size+voffset,
shadowSize );
QColor c = shadowConfiguration.innerColor();
for( int i = 0; i<5; i++ )
{ c.setAlpha( values[i] ); rg.setColorAt( a*x[i]+b, c ); }
p.setBrush( rg );
p.drawRect( shadow.rect() );
}
}
{
QRadialGradient rg = QRadialGradient( size, size, size );
QColor c = color;
c.setAlpha( 255 ); rg.setColorAt( 4.0/size, c );
c.setAlpha( 0 ); rg.setColorAt( 4.01/size, c );
p.setBrush( rg );
p.drawRect( shadow.rect() );
}
}
// draw the corner of the window - actually all 4 corners as one circle
// this is all fixedSize. Does not scale with shadow size
QLinearGradient lg = QLinearGradient(0.0, size-4.5, 0.0, size+4.5);
if( configuration().frameBorder() < OxygenConfiguration::BorderTiny )
{
lg.setColorAt(0.52, helper().backgroundTopColor(color));
lg.setColorAt(1.0, helper().backgroundBottomColor(color) );
} else {
QColor light = helper().calcLightColor( helper().backgroundTopColor(color) );
QColor dark = helper().calcDarkColor(helper().backgroundBottomColor(color));
lg.setColorAt(0.52, light);
lg.setColorAt(1.0, dark);
}
p.setBrush( Qt::NoBrush );
if( configuration().frameBorder() == OxygenConfiguration::BorderNone )
{ p.setClipRect( QRectF( 0, 0, 2*size, size ) ); }
p.setPen(QPen(lg, 0.8));
p.drawEllipse(QRectF(size-4, size-4, 8, 8));
p.end();
return shadow;
}
}
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