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kwin/clients/oxygen/oxygenclient.cpp
Luboš Luňák 59e845e4e6 Make width of titlebar spacers default to half width of normal buttons, 
not some random tiny sizes or even zero. Maybe could need small tweaking
here or there, but a spacer is supposed to make at least some space.


svn path=/trunk/KDE/kdebase/workspace/; revision=743034
2007-11-29 18:37:52 +00:00

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//////////////////////////////////////////////////////////////////////////////
// oxygenclient.cpp
// -------------------
// Oxygen window decoration for KDE
// -------------------
// Copyright (c) 2003, 2004 David Johnson
// 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 <KConfig>
#include <KGlobal>
#include <KLocale>
#include <KDebug>
#include <KColorUtils>
#include <qbitmap.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qpainter.h>
#include <qtooltip.h>
//Added by qt3to4:
#include <QBoxLayout>
#include <QGridLayout>
#include <QResizeEvent>
#include <QMouseEvent>
#include <QEvent>
#include <QShowEvent>
#include <QPaintEvent>
#include <QPainterPath>
#include <QTimer>
#include <QCache>
#include "math.h"
#include "oxygenclient.h"
#include "oxygenclient.moc"
#include "oxygenbutton.h"
#include "oxygen.h"
namespace Oxygen
{
K_GLOBAL_STATIC_WITH_ARGS(OxygenHelper, globalHelper, ("OxygenDeco"))
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)
: KCommonDecoration(b, f)
, colorCacheInvalid_(true)
, helper_(*globalHelper)
{
}
OxygenClient::~OxygenClient()
{
}
QString OxygenClient::visibleName() const
{
return i18n("Oxygen");
}
void OxygenClient::init()
{
KCommonDecoration::init();
widget()->setAutoFillBackground(false);
widget()->setAttribute(Qt::WA_OpaquePaintEvent);
widget()->setAttribute(Qt::WA_PaintOnScreen, false);
}
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();
switch (lm) {
case LM_BorderLeft:
case LM_BorderRight:
case LM_BorderBottom:
{
if (respectWindowState && maximized) {
return 0;
} else {
return BFRAMESIZE;
}
}
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;
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);
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 (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(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;
doShape();
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()->frameGeometry();
QColor color = palette.window().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;
int splitY = qMin(300, 3*frame.height()/4);
QPixmap tile = helper_.verticalGradient(color, splitY);
painter.drawTiledPixmap(QRect(0, 0, frame.width(), titleHeight + TFRAMESIZE), tile);
painter.drawTiledPixmap(QRect(0, 0, LFRAMESIZE, splitY), tile);
painter.fillRect(0, splitY, LFRAMESIZE, frame.height() - splitY, helper_.backgroundBottomColor(color));
painter.drawTiledPixmap(QRect(frame.width()-RFRAMESIZE, 0,
RFRAMESIZE, splitY), tile,
QPoint(frame.width()-RFRAMESIZE, 0));
painter.fillRect(frame.width()-RFRAMESIZE, splitY, RFRAMESIZE, frame.height() - splitY, helper_.backgroundBottomColor(color));
painter.fillRect(0, frame.height() - BFRAMESIZE, frame.width(), BFRAMESIZE, helper_.backgroundBottomColor(color));
int radialW = qMin(600, frame.width());
tile = helper_.radialGradient(color, radialW);
QRect radialRect = QRect((frame.width() - radialW) / 2, 0, radialW, 64);
painter.drawPixmap(radialRect, tile);
//painter.setRenderHint(QPainter::Antialiasing,true);
// draw title text
painter.setFont(options()->font(isActive(), false));
painter.setPen(titlebarTextColor(palette));
painter.drawText(titleLeft, titleTop-1, titleWidth, titleHeight, // -1 is to go into top resizearea
OxygenFactory::titleAlign() | Qt::AlignVCenter, caption());
painter.setRenderHint(QPainter::Antialiasing);
// Draw dividing line
frame = widget()->rect();
frame.adjust(1,1,-1,-1);
frame.getRect(&x, &y, &w, &h);
QColor light = helper_.calcLightColor(color);
QColor dark = helper_.calcDarkColor(color);
dark.setAlpha(120);
if(!isActive()) {
light.setAlpha(120);
dark.setAlpha(50);
}
QLinearGradient lg(x,0,x+w,0);
lg.setColorAt(0.5, dark);
dark.setAlpha(0);
lg.setColorAt(0.0, dark);
lg.setColorAt(1.0, dark);
painter.setPen(QPen(lg,1));
painter.drawLine(QPointF(x, titleTop+titleHeight-1.5),
QPointF(x+w, titleTop+titleHeight-1.5));
lg = QLinearGradient(x,0,x+w,0);
lg.setColorAt(0.5, light);
light.setAlpha(0);
lg.setColorAt(0.0, light);
lg.setColorAt(1.0, light);
painter.setPen(QPen(lg,1));
painter.drawLine(QPointF(x, titleTop+titleHeight-0.5),
QPointF(x+w, titleTop+titleHeight-0.5));
// Draw shadows of the frame
bool maximized = maximizeMode()==MaximizeFull && !options()->moveResizeMaximizedWindows();
if(maximized)
return;
light = helper_.calcLightColor(helper_.backgroundTopColor(color));
dark = helper_.calcDarkColor(color);
painter.setBrush(Qt::NoBrush);
if (0) { // TODO make option
QColor shadow = helper_.calcShadowColor(color); // wrong, use kwin shadow color
painter.setPen(OxygenHelper::alphaColor(shadow, 0.1));
painter.drawLine(QPointF(x+4, y-0.5), QPointF(x+w-4, y-0.5));
painter.drawArc(QRectF(x-0.5, y-0.5, 11, 11),90*16, 90*16);
painter.drawArc(QRectF(x+w-11+0.5, y-0.5, 11, 11), 0, 90*16);
painter.setPen(OxygenHelper::alphaColor(shadow, 0.3));
painter.drawLine(QPointF(x-0.5, y+4), QPointF(x-0.5, y+h));
painter.drawLine(QPointF(x+w+0.5, y+4), QPointF(x+w+0.5, y+h));
painter.setPen(OxygenHelper::alphaColor(shadow, 0.4));
painter.drawArc(QRectF(0.5, y+h-11+0.5, 11, 11),180*16, 90*16);
painter.drawArc(QRectF(x+w-11+0.5, y+h-11+0.5, 11, 11),270*16, 90*16);
painter.setPen(OxygenHelper::alphaColor(shadow, 0.55));
painter.drawLine(QPointF(x+4, y+h+0.5), QPointF(x+w-4, y+h+0.5));
}
else if (1) { // TODO make option
QColor shadow = KColorUtils::darken(color, 0.0, 0.0); // fully desaturate
painter.setPen(KColorUtils::darken(shadow, 0.1));
painter.drawLine(QPointF(x+4, y-0.5), QPointF(x+w-4, y-0.5));
painter.drawArc(QRectF(x-0.5, y-0.5, 11, 11),90*16, 90*16);
painter.drawArc(QRectF(x+w-11+0.5, y-0.5, 11, 11), 0, 90*16);
painter.setPen(KColorUtils::darken(shadow, 0.3));
painter.drawLine(QPointF(x-0.5, y+4), QPointF(x-0.5, y+h));
painter.drawLine(QPointF(x+w+0.5, y+4), QPointF(x+w+0.5, y+h));
painter.setPen(KColorUtils::darken(shadow, 0.4));
painter.drawArc(QRectF(0.5, y+h-11+0.5, 11, 11),180*16, 90*16);
painter.drawArc(QRectF(x+w-11+0.5, y+h-11+0.5, 11, 11),270*16, 90*16);
painter.setPen(KColorUtils::darken(shadow, 0.55));
painter.drawLine(QPointF(x+4, y+h+0.5), QPointF(x+w-4, y+h+0.5));
}
painter.setPen(QPen(light, 1.2));
painter.drawLine(QPointF(x+4, y+0.6), QPointF(x+w-4, y+0.6));
lg = QLinearGradient(0.0, 1.5, 0.0, 4.5);
lg.setColorAt(0, light);
light = helper_.calcLightColor(helper_.backgroundBottomColor(color));
lg.setColorAt(1, light);
painter.setPen(QPen(lg, 1.2));
painter.drawArc(QRectF(x+0.6, y+0.6, 9, 9),90*16, 90*16);
painter.drawArc(QRectF(x+w-9-0.6, y+0.6, 9, 9), 0, 90*16);
painter.drawLine(QPointF(x+0.6, y+4), QPointF(x+0.6, y+h-4));
painter.drawLine(QPointF(x+w-0.6, y+4), QPointF(x+w-0.6, y+h-4));
lg = QLinearGradient(0.0, y+h-4.5, 0.0, y+h-0.5);
lg.setColorAt(0, light);
lg.setColorAt(1, dark);
painter.setPen(QPen(lg, 1.2));
painter.drawArc(QRectF(x+0.6, y+h-9-0.6, 9, 9),180*16, 90*16);
painter.drawArc(QRectF(x+w-9-0.6, y+h-9-0.6, 9, 9), 270*16, 90*16);
painter.drawLine(QPointF(x+4, y+h-0.6), QPointF(x+w-4, y+h-0.6));
// 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::doShape()
{
bool maximized = maximizeMode()==MaximizeFull && !options()->moveResizeMaximizedWindows();
int r=widget()->width();
int b=widget()->height();
QRegion mask(0,0,r,b);
if(maximized) {
setMask(mask);
return;
}
// Remove top-left corner.
mask -= QRegion(0, 0, 4, 1);
mask -= QRegion(0, 1, 2, 1);
mask -= QRegion(0, 2, 1, 1);
mask -= QRegion(0, 3, 1, 1);
// Remove top-right corner.
mask -= QRegion(r - 4, 0, 4, 1);
mask -= QRegion(r - 2, 1, 2, 1);
mask -= QRegion(r - 1, 2, 1, 1);
mask -= QRegion(r - 1, 3, 1, 1);
// Remove bottom-left corner.
mask -= QRegion(0, b-1-3, 1, 1);
mask -= QRegion(0, b-1-2, 1, 1);
mask -= QRegion(0, b-1-1, 2, 1);
mask -= QRegion(0, b-1-0, 4, 1);
// Remove bottom-right corner.
mask -= QRegion(r - 1, b-1-3, 1, 1);
mask -= QRegion(r - 1, b-1-2, 1, 1);
mask -= QRegion(r - 2, b-1-1, 2, 1);
mask -= QRegion(r - 4, b-1-0, 4, 1);
setMask(mask);
}
} //namespace Oxygen
//#include "oxygenclient.moc"
// #endif
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