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kwin/clients/oxygen/oxygen.cpp
Casper Boemann 48c1eee79a Improved Oxygen window decoration 
- in composite it takes advantage of the new shadow api in kwin
 - in non-composite a thin colored frame is added to active window

For both the intention is that inactive windows have shadow and active window have 
a glow. Naturally this looks much more realistic  with composite


svn path=/trunk/KDE/kdebase/workspace/; revision=873293
2008-10-19 10:31:32 +00:00

375 lines
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//////////////////////////////////////////////////////////////////////////////
// oxygenbutton.h
// -------------------
// Oxygen window decoration for KDE.
// -------------------
// 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 <QPainter>
#include "oxygen.h"
#include "oxygenclient.h"
#include <kconfiggroup.h>
#include <QApplication>
extern "C"
{
KDE_EXPORT KDecorationFactory* create_factory()
{
return new Oxygen::OxygenFactory();
}
}
namespace Oxygen
{
OxygenHelper *oxygenHelper(); // referenced from definition in oxygendclient.cpp
//////////////////////////////////////////////////////////////////////////////
// OxygenFactory Class //
//////////////////////////////////////////////////////////////////////////////
bool OxygenFactory::initialized_ = false;
Qt::Alignment OxygenFactory::titleAlignment_ = Qt::AlignLeft;
bool OxygenFactory::showStripes_ = true;
//////////////////////////////////////////////////////////////////////////////
// OxygenFactory()
// ----------------
// Constructor
OxygenFactory::OxygenFactory()
{
readConfig();
initialized_ = true;
}
//////////////////////////////////////////////////////////////////////////////
// ~OxygenFactory()
// -----------------
// Destructor
OxygenFactory::~OxygenFactory() { initialized_ = false; }
//////////////////////////////////////////////////////////////////////////////
// createDecoration()
// -----------------
// Create the decoration
KDecoration* OxygenFactory::createDecoration(KDecorationBridge* b)
{
return (new OxygenClient(b, this))->decoration();
}
//////////////////////////////////////////////////////////////////////////////
// reset()
// -------
// Reset the handler. Returns true if decorations need to be remade, false if
// only a repaint is necessary
bool OxygenFactory::reset(unsigned long changed)
{
// read in the configuration
initialized_ = false;
bool confchange = readConfig();
initialized_ = true;
if (confchange ||
(changed & (SettingDecoration | SettingButtons | SettingBorder))) {
return true;
} else {
resetDecorations(changed);
return false;
}
}
//////////////////////////////////////////////////////////////////////////////
// readConfig()
// ------------
// Read in the configuration file
bool OxygenFactory::readConfig()
{
// create a config object
KConfig config("oxygenrc");
KConfigGroup group = config.group("Windeco");
// grab settings
Qt::Alignment oldalign = titleAlignment_;
QString value = group.readEntry("TitleAlignment", "Left");
if (value == "Left")
titleAlignment_ = Qt::AlignLeft;
else if (value == "Center")
titleAlignment_ = Qt::AlignHCenter;
else if (value == "Right")
titleAlignment_ = Qt::AlignRight;
bool oldstripes = showStripes;
showStripes_ = group.readEntry( "ShowStripes", true );
if (oldalign == titleAlignment_ && oldstripes == showStripes_)
return false;
else
return true;
}
bool OxygenFactory::supports( Ability ability ) const
{
switch( ability ) {
// announce
case AbilityAnnounceButtons:
case AbilityAnnounceColors:
// buttons
case AbilityButtonMenu:
case AbilityButtonHelp:
case AbilityButtonMinimize:
case AbilityButtonMaximize:
case AbilityButtonClose:
case AbilityButtonOnAllDesktops:
case AbilityButtonAboveOthers:
case AbilityButtonBelowOthers:
case AbilityButtonSpacer:
case AbilityButtonShade:
// compositing
case AbilityCompositingShadow: // TODO: UI option to use default shadows instead
return true;
// no colors supported at this time
default:
return false;
};
}
//////////////////////////////////////////////////////////////////////////////
// Shadows
QList< QList<QImage> > OxygenFactory::shadowTextures()
{
QPalette palette = qApp->palette();
// Set palette to the right group. Which is active right now while drawing the glow
palette.setCurrentColorGroup(QPalette::Active);
// TODO: THIS IS ALL VERY UGLY! Not recommended to do it this way.
// Copied from the shadow effect's XRender picture generator
// TODO: You can add fake anti-aliasing here :)
QList< QList<QImage> > textureLists;
QList<QImage> textures;
#define shadowFuzzyness 10
#define shadowSize 10
//---------------------------------------------------------------
// Active shadow texture
QColor color = palette.window().color();
QColor light = oxygenHelper()->calcLightColor(oxygenHelper()->backgroundTopColor(color));
QColor dark = oxygenHelper()->calcDarkColor(oxygenHelper()->backgroundBottomColor(color));
QColor glow = KDecoration::options()->color(ColorFrame);
QColor glow2 = KDecoration::options()->color(ColorTitleBar);
qreal size = 25.5;
QPixmap *shadow = new QPixmap( size*2, size*2 );
shadow->fill( Qt::transparent );
QRadialGradient rg( size, size, size );
QColor c = color;
c.setAlpha( 255 ); rg.setColorAt( 4.4/size, c );
c = glow;
c.setAlpha( 220 ); rg.setColorAt( 4.5/size, c );
c.setAlpha( 180 ); rg.setColorAt( 5/size, c );
c.setAlpha( 25 ); rg.setColorAt( 5.5/size, c );
c.setAlpha( 0 ); rg.setColorAt( 6.5/size, c );
QPainter p( shadow );
p.setRenderHint( QPainter::Antialiasing );
p.setPen( Qt::NoPen );
p.setBrush( rg );
p.drawRect( shadow->rect() );
rg = QRadialGradient( size, size, size );
c = color;
c.setAlpha( 255 ); rg.setColorAt( 4.4/size, c );
c = glow2;
c.setAlpha( 0.58*255 ); rg.setColorAt( 4.5/size, c );
c.setAlpha( 0.43*255 ); rg.setColorAt( 5.5/size, c );
c.setAlpha( 0.30*255 ); rg.setColorAt( 6.5/size, c );
c.setAlpha( 0.22*255 ); rg.setColorAt( 7.5/size, c );
c.setAlpha( 0.15*255 ); rg.setColorAt( 8.5/size, c );
c.setAlpha( 0.08*255 ); rg.setColorAt( 11.5/size, c );
c.setAlpha( 0); rg.setColorAt( 14.5/size, c );
p.setRenderHint( QPainter::Antialiasing );
p.setPen( Qt::NoPen );
p.setBrush( rg );
p.drawRect( shadow->rect() );
// draw the corner of the window - actually all 4 corners as one circle
p.setBrush( Qt::NoBrush );
QLinearGradient lg = QLinearGradient(0.0, size-4.5, 0.0, size+4.5);
lg.setColorAt(0.52, light);
lg.setColorAt(1.0, dark);
p.setPen(QPen(lg, 0.8));
p.drawEllipse(QRectF(size-4, size-4, 8, 8));
p.end();
int w = shadow->width() / 2;
int h = shadow->height() / 2;
QPixmap dump;
#define MAKE_TEX( _W_, _H_, _XOFF_, _YOFF_ ) \
dump = QPixmap( _W_, _H_ ); \
dump.fill( Qt::transparent ); \
p.begin( &dump ); \
p.drawPixmap( 0, 0, *shadow, _XOFF_, _YOFF_, _W_, _H_ ); \
p.end(); \
textures.append( dump.toImage() );
MAKE_TEX( w, h, 0, h+1 ); // corner
MAKE_TEX( 1, h, w, h+1 );
MAKE_TEX( w, h, w+1, h+1 );// corner
MAKE_TEX( w, 1, 0, h );
MAKE_TEX( w, 1, w+1, h );
MAKE_TEX( w, h, 0, 0);// corner
MAKE_TEX( 1, h, w, 0);
MAKE_TEX( w, h, w+1, 0);// corner
textureLists.append( textures );
//---------------------------------------------------------------
// Inactive shadow texture
textures.clear();
shadow->fill( Qt::transparent );
p.begin(shadow);
p.setRenderHint( QPainter::Antialiasing );
p.setPen( Qt::NoPen );
rg = QRadialGradient( size, size+4, size );
c = QColor( Qt::black );
c.setAlpha( 0.12*255 ); rg.setColorAt( 4.5/size, c );
c.setAlpha( 0.11*255 ); rg.setColorAt( 6.6/size, c );
c.setAlpha( 0.075*255 ); rg.setColorAt( 8.5/size, c );
c.setAlpha( 0.06*255 ); rg.setColorAt( 11.5/size, c );
c.setAlpha( 0.035*255 ); rg.setColorAt( 14.5/size, c );
c.setAlpha( 0.025*255 ); rg.setColorAt( 17.5/size, c );
c.setAlpha( 0.01*255 ); rg.setColorAt( 21.5/size, c );
c.setAlpha( 0.0*255 ); rg.setColorAt( 25.5/size, c );
p.setRenderHint( QPainter::Antialiasing );
p.setPen( Qt::NoPen );
p.setBrush( rg );
p.drawRect( shadow->rect() );
rg = QRadialGradient( size, size+2, size );
c = QColor( Qt::black );
c.setAlpha( 0.25*255 ); rg.setColorAt( 4.5/size, c );
c.setAlpha( 0.20*255 ); rg.setColorAt( 5.5/size, c );
c.setAlpha( 0.13*255 ); rg.setColorAt( 7.5/size, c );
c.setAlpha( 0.06*255 ); rg.setColorAt( 8.5/size, c );
c.setAlpha( 0.015*255 ); rg.setColorAt( 11.5/size, c );
c.setAlpha( 0.0*255 ); rg.setColorAt( 14.5/size, c );
p.setRenderHint( QPainter::Antialiasing );
p.setPen( Qt::NoPen );
p.setBrush( rg );
p.drawRect( shadow->rect() );
rg = QRadialGradient( size, size+0.2, size );
c = color;
c = QColor( Qt::black );
c.setAlpha( 0.35*255 ); rg.setColorAt( 0/size, c );
c.setAlpha( 0.32*255 ); rg.setColorAt( 4.5/size, c );
c.setAlpha( 0.22*255 ); rg.setColorAt( 5.0/size, c );
c.setAlpha( 0.03*255 ); rg.setColorAt( 5.5/size, c );
c.setAlpha( 0.0*255 ); rg.setColorAt( 6.5/size, c );
p.setRenderHint( QPainter::Antialiasing );
p.setPen( Qt::NoPen );
p.setBrush( rg );
p.drawRect( shadow->rect() );
rg = QRadialGradient( size, size, size );
c = color;
c.setAlpha( 255 ); rg.setColorAt( 4.0/size, c );
c.setAlpha( 0 ); rg.setColorAt( 4.01/size, c );
p.setRenderHint( QPainter::Antialiasing );
p.setPen( Qt::NoPen );
p.setBrush( rg );
p.drawRect( shadow->rect() );
// draw the corner of the window - actually all 4 corners as one circle
p.setBrush( Qt::NoBrush );
p.setPen(QPen(lg, 0.8));
p.drawEllipse(QRectF(size-4, size-4, 8, 8));
p.end();
MAKE_TEX( w, h, 0, h+1 ); // corner
MAKE_TEX( 1, h, w, h+1 );
MAKE_TEX( w, h, w+1, h+1 );// corner
MAKE_TEX( w, 1, 0, h );
MAKE_TEX( w, 1, w+1, h );
MAKE_TEX( w, h, 0, 0);// corner
MAKE_TEX( 1, h, w, 0);
MAKE_TEX( w, h, w+1, 0);// corner
textureLists.append( textures );
delete shadow;
return textureLists;
}
int OxygenFactory::shadowTextureList( ShadowType type ) const
{
switch( type ) {
case ShadowBorderedActive:
case ShadowBorderlessActive:
return 0;
case ShadowBorderedInactive:
case ShadowBorderlessInactive:
case ShadowOther:
return 1;
}
abort(); // Should never be reached
}
QList<QRect> OxygenFactory::shadowQuads( ShadowType type, QSize size ) const
{
int outside=20, underlap=5, cornersize=25;
// These are underlap under the decoration so the corners look nicer 10px on the outside
QList<QRect> quads;
quads.append(QRect(-outside, size.height()-underlap, cornersize, cornersize));
quads.append(QRect(underlap, size.height()-underlap, size.width()-2*underlap, cornersize));
quads.append(QRect(size.width()-underlap, size.height()-underlap, cornersize, cornersize));
quads.append(QRect(-outside, underlap, cornersize, size.height()-2*underlap));
quads.append(QRect(size.width()-underlap, underlap, cornersize, size.height()-2*underlap));
quads.append(QRect(-outside, -outside, cornersize, cornersize));
quads.append(QRect(underlap, -outside, size.width()-2*underlap, cornersize));
quads.append(QRect(size.width()-underlap, -outside, cornersize, cornersize));
return quads;
}
double OxygenFactory::shadowOpacity( ShadowType type, double dataOpacity ) const
{
return dataOpacity;
}
} //namespace Oxygen
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