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kwin/clients/ozone/oxygenclient.cpp

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//////////////////////////////////////////////////////////////////////////////
// oxygenclient.cpp
// -------------------
// Ozone window decoration for KDE
// -------------------
// 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.
//////////////////////////////////////////////////////////////////////////////
// #ifndef OXYGENCLIENT_H
// #define OXYGENCLIENT_H
#include "oxygenclient.h"
#include <KConfig>
#include <KGlobal>
#include <KLocale>
#include <KDebug>
#include <KColorUtils>
#include <QBitmap>
#include <QLabel>
#include <QLayout>
#include <QPainter>
#include <QToolTip>
//Added by qt3to4:
#include <QBoxLayout>
#include <QGridLayout>
#include <QResizeEvent>
#include <QMouseEvent>
#include <QEvent>
#include <QShowEvent>
#include <QPaintEvent>
#include <QPainterPath>
#include <QTimer>
#include <QCache>
#include <QtGui/QApplication>
#include "math.h"
#include "oxygenclient.moc"
#include "oxygenbutton.h"
#include "oxygen.h"
namespace Ozone
{
namespace Oxygen
{
K_GLOBAL_STATIC_WITH_ARGS(OxygenHelper, globalHelper, ("OxygenDeco"))
OxygenHelper *oxygenHelper()
{
return globalHelper;
}
static void oxkwincleanupBefore()
{
OxygenHelper *h = globalHelper;
h->invalidateCaches();
}
void OxygenClient::invalidateCaches()
{
shadowCache_.clear();
}
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)
, helper_(*globalHelper)
{
qAddPostRoutine(oxkwincleanupBefore);
// cache active and inactive states
shadowCache_.setMaxCost(2);
}
OxygenClient::~OxygenClient()
{
}
QString OxygenClient::visibleName() const
{
return i18n("Ozone");
}
void OxygenClient::init()
{
KCommonDecoration::init();
widget()->setAutoFillBackground(false);
widget()->setAttribute(Qt::WA_OpaquePaintEvent);
}
bool OxygenClient::decorationBehaviour(DecorationBehaviour behaviour) const
{
switch (behaviour) {
case DB_MenuClose:
return true;//Handler()->menuClose();
case DB_WindowMask:
return false;
default:
return KCommonDecoration::decorationBehaviour(behaviour);
}
}
int OxygenClient::layoutMetric(LayoutMetric lm, bool respectWindowState, const KCommonDecorationButton *btn) const
{
bool maximized = maximizeMode()==MaximizeFull && !options()->moveResizeMaximizedWindows();
int frameWidth = OxygenFactory::borderSize();
switch (lm) {
case LM_BorderLeft:
case LM_BorderRight:
case LM_BorderBottom:
{
if (respectWindowState && maximized) {
return 0;
} else {
// Even for thin borders (2px wide) we want to preserve
// the rounded corners having a minimum height of 7px
if (lm == LM_BorderBottom) {
return qMax(frameWidth, 7);
} else {
return frameWidth;
}
}
}
case LM_TitleEdgeTop:
{
if (respectWindowState && maximized) {
return 0;
} else {
return TFRAMESIZE;
}
}
case LM_TitleEdgeBottom:
{
return 0;
}
case LM_TitleEdgeLeft:
case LM_TitleEdgeRight:
{
if (respectWindowState && maximized) {
return 0;
} else {
return 6;
}
}
case LM_TitleBorderLeft:
case LM_TitleBorderRight:
return 5;
case LM_ButtonWidth:
case LM_ButtonHeight:
case LM_TitleHeight:
{
if (respectWindowState && isToolWindow()) {
return OXYGEN_BUTTONSIZE;
} else {
return OXYGEN_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 SHADOW_WIDTH;
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;
}
}
// c0 - background
// c1 - foreground
// t - target contrast ratio
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;
}
QColor OxygenClient::titlebarTextColor(const QPalette &palette)
{
if( !OxygenFactory::blendTitlebarColors())
return options()->color(ColorFont, isActive());
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::paintEvent(QPaintEvent *e)
{
Q_UNUSED(e)
if (!OxygenFactory::initialized()) return;
QPalette palette = widget()->palette();
QPainter painter(widget());
// Set palette to the right group.
// TODO - fix KWin to do this for us :-).
if (isActive())
palette.setCurrentColorGroup(QPalette::Active);
else
palette.setCurrentColorGroup(QPalette::Inactive);
int x,y,w,h;
QRect frame = widget()->rect();
frame.adjust(SHADOW_WIDTH, SHADOW_WIDTH, -SHADOW_WIDTH, -SHADOW_WIDTH);
QColor color = OxygenFactory::blendTitlebarColors() ? palette.window().color() : options()->color( ColorTitleBar, isActive());
QColor light = helper_.calcLightColor( color );
QColor dark = helper_.calcDarkColor( color );
const int titleHeight = layoutMetric(LM_TitleHeight);
const int titleTop = layoutMetric(LM_TitleEdgeTop) + frame.top();
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;
QPalette pal2( palette );
if( !OxygenFactory::blendTitlebarColors()) {
pal2.setColor( QPalette::Window, options()->color(
KDecorationDefines::ColorTitleBar, isActive()));
}
// draw shadow
if (compositingActive())
shadowTiles(color, SHADOW_WIDTH)->render(
frame.adjusted(-SHADOW_WIDTH+4, -SHADOW_WIDTH+4, SHADOW_WIDTH-4, SHADOW_WIDTH-4),
&painter, TileSet::Ring);
// draw window background
bool isCompositingActive = compositingActive();
if (isCompositingActive) {
frame.getRect(&x, &y, &w, &h);
QRegion mask(x+5, y+0, w-10, h-0);
mask += QRegion(x+0, y+5, w-0, h-10);
mask += QRegion(x+1, y+3, w-2, h-6);
mask += QRegion(x+2, y+2, w-4, h-4);
mask += QRegion(x+3, y+1, w-6, h-2);
painter.setClipRegion(mask);
}
helper_.renderWindowBackground(&painter, frame, this->widget(), palette, SHADOW_WIDTH);
if (isCompositingActive) {
painter.setClipping(false);
}
// draw title text
painter.setFont(options()->font(isActive(), false));
painter.setPen(titlebarTextColor(pal2));
painter.drawText(titleLeft, titleTop-1, titleWidth, titleHeight, // -1 is to go into top resizearea
OxygenFactory::titleAlignment() | Qt::AlignVCenter, caption());
painter.setRenderHint(QPainter::Antialiasing);
// Draw dividing line
if (compositingActive()) {
frame.adjust(-1,-1,1,1);
}
frame.getRect(&x, &y, &w, &h);
if(isActive()) {
helper_.drawSeparator(&painter, QRect(x, titleTop+titleHeight-1.5, w, 2), color, Qt::Horizontal);
}
// draw stripes as indicator for active windows
if (isActive() && OxygenFactory::showStripes()) {
Qt::Alignment align = OxygenFactory::titleAlignment();
if (widget()->layoutDirection() == Qt::RightToLeft)
{
if (align == Qt::AlignLeft)
align = Qt::AlignRight;
else if (align == Qt::AlignRight)
align = Qt::AlignLeft;
}
if (align & Qt::AlignLeft) {
int left = titleLeft + QFontMetrics(options()->font(isActive(), false)).width(caption()) + 4;
int right = titleLeft + titleWidth;
if (left < right)
drawStripes(&painter, palette, left, right, titleTop+6);
}
if (align & Qt::AlignRight) {
int left = titleLeft;
int right = titleLeft + titleWidth - QFontMetrics(options()->font(isActive(), false)).width(caption()) - 4;
if (left < right)
drawStripes(&painter, palette, right, left, titleTop+6);
}
if (align & Qt::AlignHCenter) {
int textWidth = QFontMetrics(options()->font(isActive(), false)).width(caption());
int left = titleLeft;
int centerLeft = titleLeft + titleWidth/2 - textWidth/2 - 4;
int centerRight = titleLeft + titleWidth/2 + textWidth/2 + 4;
int right = titleLeft + titleWidth;
if (left < centerLeft && right > centerRight) {
drawStripes(&painter, palette, centerLeft, left, titleTop+6);
drawStripes(&painter, palette, centerRight, right, titleTop+6);
}
}
}
// Draw shadows of the frame
bool maximized = maximizeMode()==MaximizeFull && !options()->moveResizeMaximizedWindows();
if(maximized)
return;
helper_.drawFloatFrame(&painter, frame, color, !compositingActive(), isActive(),
KDecoration::options()->color(ColorTitleBar));
if(!isResizable())
return;
// Draw the 3-dots resize handles
qreal cenY = frame.height() / 2 + x + 0.5;
qreal posX = frame.width() + 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);
painter.translate(x + frame.width()-9, y + frame.height()-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);
}
void OxygenClient::drawStripes(QPainter *p, QPalette &palette, const int start, const int end, const int topMargin)
{
QLinearGradient stripeGradient(QPoint(start,0), QPoint(end,0));
stripeGradient.setColorAt(0.0, Qt::transparent);
stripeGradient.setColorAt(0.05, KDecoration::options()->color(ColorTitleBar));
stripeGradient.setColorAt(1.0, Qt::transparent);
QPen pen1(stripeGradient, 0.5);
QLinearGradient stripeGradient2(QPoint(start,0), QPoint(end,0));
stripeGradient2.setColorAt(0.0, Qt::transparent);
stripeGradient2.setColorAt(0.05, helper_.calcLightColor(palette.color(QPalette::Window)));
stripeGradient2.setColorAt(1.0, Qt::transparent);
QPen pen2(stripeGradient2, 0.5);
bool antialiasing = p->testRenderHint(QPainter::Antialiasing);
p->setRenderHint(QPainter::Antialiasing, false);
for (int i = 0; i < 3; ++i)
{
p->setPen(pen1);
p->drawLine(QPointF(start, topMargin+4*i), QPointF(end, topMargin+4*i));
p->setPen(pen2);
p->drawLine(QPointF(start, topMargin+4*i+1), QPointF(end, topMargin+4*i+1));
}
p->setRenderHint(QPainter::Antialiasing, antialiasing);
}
void OxygenClient::updateWindowShape()
{
bool maximized = maximizeMode()==MaximizeFull && !options()->moveResizeMaximizedWindows();
int w=widget()->width();
int h=widget()->height();
if(maximized) {
QRegion mask(0,0,w,h);
setMask(mask);
return;
}
if (!compositingActive()) {
QRegion mask(4, 0, w-8, h);
mask += QRegion(0, 4, w, h-8);
mask += QRegion(2, 1, w-4, h-2);
mask += QRegion(1, 2, w-2, h-4);
setMask(mask);
}
}
TileSet *OxygenClient::shadowTiles(const QColor &color, qreal size)
{
quint64 key = (quint64(color.rgba()) << 32) | quint64(size*10);
TileSet *tileSet = shadowCache_.object(key);
if (!tileSet)
{
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);
QPixmap shadow = QPixmap( size*2, size*2 );
shadow.fill( Qt::transparent );
// draw the corner of the window - actually all 4 corners as one circle
QLinearGradient lg = QLinearGradient(0.0, size-4.5, 0.0, size+4.5);
lg.setColorAt(0.52, light);
lg.setColorAt(1.0, dark);
QPainter p( &shadow );
p.setRenderHint( QPainter::Antialiasing );
p.setPen( Qt::NoPen );
if (isActive())
{
//---------------------------------------------------------------
// Active shadow texture
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 );
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.setBrush( rg );
p.drawRect( shadow.rect() );
p.setBrush( Qt::NoBrush );
p.setPen(QPen(lg, 0.8));
p.drawEllipse(QRectF(size-4, size-4, 8, 8));
p.end();
tileSet = new TileSet(shadow, size, size, 1, 1);
shadowCache_.insert(key, tileSet);
} else {
//---------------------------------------------------------------
// Inactive shadow texture
QRadialGradient rg = QRadialGradient( size, size+4, size );
QColor 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();
tileSet = new TileSet(shadow, size, size, 1, 1);
shadowCache_.insert(key, tileSet);
}
}
return tileSet;
}
} //namespace Oxygen
} //namespace Ozone
//#include "oxygenclient.moc"
// #endif