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kwin/clients/ozone/oxygenbutton.cpp
Lucas Murray 9df2637add Backport r999259: 
Sync missing r908463 from Oxygen.

svn path=/branches/KDE/4.3/kdebase/workspace/; revision=999262
2009-07-19 14:49:30 +00:00

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//////////////////////////////////////////////////////////////////////////////
// oxygenbutton.cpp
// -------------------
// Ozone window decoration for KDE. Buttons.
// -------------------
// Copyright (c) 2006, 2007 Riccardo Iaconelli <riccardo@kde.org>
// Copyright (c) 2006, 2007 Casper Boemann <cbr@boemann.dk>
//
// 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 "oxygenbutton.h"
#include <kcommondecoration.h>
#include <math.h>
#include <QPainterPath>
#include <QPainter>
#include <QPen>
#include <QBitmap>
#include <kdecoration.h>
#include <kglobal.h>
#include <KColorUtils>
#include <kdebug.h>
#include <KColorScheme>
#include "oxygenclient.h"
#include "oxygen.h"
namespace Ozone
{
namespace Oxygen
{
// class OxygenClient;
/*
extern int BUTTONSIZE;
extern int DECOSIZE;*/
// static const int DECOSIZE = 8;
//////////////////////////////////////////////////////////////////////////////
// OxygenButton Class //
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
// OxygenButton()
// ---------------
// Constructor
OxygenButton::OxygenButton(OxygenClient &parent,
const QString& tip, ButtonType type)
: KCommonDecorationButton((::ButtonType)type, &parent)
, client_(parent)
, helper_(parent.helper_)
, type_(type)
, lastmouse_(0)
, colorCacheInvalid_(true)
{
setAutoFillBackground(false);
setAttribute(Qt::WA_OpaquePaintEvent, false);
setFixedSize(OXYGEN_BUTTONSIZE, OXYGEN_BUTTONSIZE);
setCursor(Qt::ArrowCursor);
setToolTip(tip);
}
OxygenButton::~OxygenButton()
{
}
//declare function from oxygenclient.cpp
QColor reduceContrast(const QColor &c0, const QColor &c1, double t);
QColor OxygenButton::buttonDetailColor(const QPalette &palette)
{
if (client_.isActive())
return palette.color(QPalette::Active, QPalette::ButtonText);
else {
if (colorCacheInvalid_) {
QColor ab = palette.color(QPalette::Active, QPalette::Button);
QColor af = palette.color(QPalette::Active, QPalette::ButtonText);
QColor nb = palette.color(QPalette::Inactive, QPalette::Button);
QColor nf = palette.color(QPalette::Inactive, QPalette::ButtonText);
colorCacheInvalid_ = false;
cachedButtonDetailColor_ = reduceContrast(nb, nf, qMax(qreal(2.5), KColorUtils::contrastRatio(ab, KColorUtils::mix(ab, af, 0.4))));
}
return cachedButtonDetailColor_;
}
}
//////////////////////////////////////////////////////////////////////////////
// sizeHint()
// ----------
// Return size hint
QSize OxygenButton::sizeHint() const
{
return QSize(OXYGEN_BUTTONSIZE, OXYGEN_BUTTONSIZE);
}
//////////////////////////////////////////////////////////////////////////////
// enterEvent()
// ------------
// Mouse has entered the button
void OxygenButton::enterEvent(QEvent *e)
{
KCommonDecorationButton::enterEvent(e);
if (status_ != Oxygen::Pressed) {
status_ = Oxygen::Hovered;
}
update();
}
//////////////////////////////////////////////////////////////////////////////
// leaveEvent()
// ------------
// Mouse has left the button
void OxygenButton::leaveEvent(QEvent *e)
{
KCommonDecorationButton::leaveEvent(e);
// if we wanted to do mouseovers, we would keep track of it here
status_ = Oxygen::Normal;
update();
}
//////////////////////////////////////////////////////////////////////////////
// mousePressEvent()
// ------------
// Mouse has pressed the button
void OxygenButton::mousePressEvent(QMouseEvent *e)
{
status_ = Oxygen::Pressed;
update();
KCommonDecorationButton::mousePressEvent(e);
}
//////////////////////////////////////////////////////////////////////////////
// mouseReleaseEvent()
// ------------
// Mouse has released the button
void OxygenButton::mouseReleaseEvent(QMouseEvent *e)
{
status_ = Oxygen::Normal;
update();
KCommonDecorationButton::mouseReleaseEvent(e);
}
//////////////////////////////////////////////////////////////////////////////
// drawButton()
// ------------
// Draw the button
void OxygenButton::paintEvent(QPaintEvent *)
{
QPainter painter(this);
QPalette pal = palette(); // de-const-ify
// Set palette to the right group.
// TODO - fix KWin to do this for us :-).
if (client_.isActive())
pal.setCurrentColorGroup(QPalette::Active);
else
pal.setCurrentColorGroup(QPalette::Inactive);
QPalette pal2( pal );
if( !OxygenFactory::blendTitlebarColors()) {
pal2.setColor( window()->backgroundRole(), client_.options()->color(
KDecorationDefines::ColorTitleBar, client_.isActive()));
}
// fill the grey square
helper_.renderWindowBackground(&painter, this->rect(), this, pal2, 23 /*TODO: calculate this from layout metrics*/);
painter.setClipRect(this->rect());
// draw dividing line
painter.setRenderHints(QPainter::Antialiasing);
QRect frame = client_.widget()->rect();
int x = -this->geometry().x()+1;
int w = frame.width()-2;
const int titleHeight = client_.layoutMetric(KCommonDecoration::LM_TitleHeight);
QColor color = OxygenFactory::blendTitlebarColors()?pal.window().color()
:client_.options()->color( KDecorationDefines::ColorTitleBar, client_.isActive());
QColor light = helper_.calcLightColor( color );
QColor dark = helper_.calcDarkColor( color );
dark.setAlpha(120);
if(client_.isActive())
{
helper_.drawSeparator(&painter, QRect(x, titleHeight-1.5, w, 2), color, Qt::Horizontal);
}
if (type_ == ButtonMenu)
{
// we paint the mini icon (which is 16 pixels high)
int dx = (width() - 16) / 2;
int dy = (height() - 16) / 2 - 1;
painter.drawPixmap(dx, dy, client_.icon().pixmap(16));
return;
}
if(client_.maximizeMode() == OxygenClient::MaximizeRestore)
{
painter.translate(0,-1);
}
QColor bg = helper_.backgroundTopColor(OxygenFactory::blendTitlebarColors()?pal.window().color()
:client_.options()->color(KDecorationDefines::ColorTitleBar,client_.isActive()));
// get icon color
color = buttonDetailColor(pal);
if (status_ == Oxygen::Hovered || status_ == Oxygen::Pressed)
{
if (type_ == ButtonClose)
{
color = KColorScheme(pal.currentColorGroup()).foreground(KColorScheme::NegativeText).color();
}
else
{
color = KColorScheme(pal.currentColorGroup()).decoration(KColorScheme::HoverColor).color();
}
}
// draw button
QColor bt = OxygenFactory::blendTitlebarColors()?pal.window().color()
:client_.options()->color(KDecorationDefines::ColorButtonBg,client_.isActive());
painter.drawPixmap(0, 0, helper_.windecoButton(bt, status_ == Oxygen::Pressed));
// draw glow on hover
if (status_ == Oxygen::Hovered)
{
painter.drawPixmap(0, 0, helper_.windecoButtonGlow(color));
}
if (client_.isActive())
{
painter.setRenderHints(QPainter::Antialiasing);
painter.setBrush(Qt::NoBrush);
painter.setPen(QPen(color, 1.4, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
drawIcon(&painter, pal, type_);
}
else
{
// outlined mode
QPixmap pixmap(size());
pixmap.fill(Qt::transparent);
QPainter pp(&pixmap);
pp.setRenderHints(QPainter::Antialiasing);
pp.setBrush(Qt::NoBrush);
pp.setPen(QPen(color, 3.0, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
drawIcon(&pp, pal, type_);
pp.setCompositionMode(QPainter::CompositionMode_DestinationOut);
pp.setPen(QPen(color, 1.0, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
drawIcon(&pp, pal, type_);
painter.drawPixmap(QPoint(0,0), pixmap);
}
}
void OxygenButton::drawIcon(QPainter *p, QPalette &pal, ButtonType &type)
{
switch(type)
{
case ButtonSticky:
if(isChecked()) {
QPen newPen = p->pen();
newPen.setColor(KColorScheme(pal.currentColorGroup()).decoration(KColorScheme::HoverColor).color());
p->setPen(newPen);
}
p->drawPoint(QPointF(10.5,10.5));
break;
case ButtonHelp:
p->translate(1.5, 1.5);
p->drawArc(7,5,4,4,135*16, -180*16);
p->drawArc(9,8,4,4,135*16,45*16);
p->drawPoint(9,12);
p->translate(-1.5, -1.5);
break;
case ButtonMin:
p->drawLine(QPointF( 7.5, 9.5), QPointF(10.5,12.5));
p->drawLine(QPointF(10.5,12.5), QPointF(13.5, 9.5));
break;
case ButtonMax:
switch(client_.maximizeMode())
{
case OxygenClient::MaximizeRestore:
case OxygenClient::MaximizeVertical:
case OxygenClient::MaximizeHorizontal:
p->drawLine(QPointF( 7.5,11.5), QPointF(10.5, 8.5));
p->drawLine(QPointF(10.5, 8.5), QPointF(13.5,11.5));
break;
case OxygenClient::MaximizeFull:
{
p->translate(1.5, 1.5);
//p->setBrush(lg);
QPoint points[4] = {QPoint(9, 6), QPoint(12, 9), QPoint(9, 12), QPoint(6, 9)};
//QPoint points[4] = {QPoint(9, 5), QPoint(13, 9), QPoint(9, 13), QPoint(5, 9)};
p->drawPolygon(points, 4);
p->translate(-1.5, -1.5);
break;
}
}
break;
case ButtonClose:
p->drawLine(QPointF( 7.5,7.5), QPointF(13.5,13.5));
p->drawLine(QPointF(13.5,7.5), QPointF( 7.5,13.5));
break;
case ButtonAbove:
if(isChecked()) {
QPen newPen = p->pen();
newPen.setColor(KColorScheme(pal.currentColorGroup()).decoration(KColorScheme::HoverColor).color());
p->setPen(newPen);
}
p->drawLine(QPointF( 7.5,14), QPointF(10.5,11));
p->drawLine(QPointF(10.5,11), QPointF(13.5,14));
p->drawLine(QPointF( 7.5,10), QPointF(10.5, 7));
p->drawLine(QPointF(10.5, 7), QPointF(13.5,10));
break;
case ButtonBelow:
if(isChecked()) {
QPen newPen = p->pen();
newPen.setColor(KColorScheme(pal.currentColorGroup()).decoration(KColorScheme::HoverColor).color());
p->setPen(newPen);
}
p->drawLine(QPointF( 7.5,11), QPointF(10.5,14));
p->drawLine(QPointF(10.5,14), QPointF(13.5,11));
p->drawLine(QPointF( 7.5, 7), QPointF(10.5,10));
p->drawLine(QPointF(10.5,10), QPointF(13.5, 7));
break;
case ButtonShade:
if (!isChecked()) // shade button
{
p->drawLine(QPointF( 7.5, 7.5), QPointF(10.5,10.5));
p->drawLine(QPointF(10.5,10.5), QPointF(13.5, 7.5));
p->drawLine(QPointF( 7.5,13.0), QPointF(13.5,13.0));
} else { // unshade button
p->drawLine(QPointF( 7.5,10.5), QPointF(10.5, 7.5));
p->drawLine(QPointF(10.5, 7.5), QPointF(13.5,10.5));
p->drawLine(QPointF( 7.5,13.0), QPointF(13.5,13.0));
}
break;
default:
break;
}
}
} //namespace Oxygen
} //namespace Ozone
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