Plasma
slider.cpp
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00020 #include "slider.h"
00021
00022 #include <QApplication>
00023 #include <QPainter>
00024 #include <QSlider>
00025 #include <QStyleOptionSlider>
00026 #include <QGraphicsSceneWheelEvent>
00027 #include <kmimetype.h>
00028
00029 #include "theme.h"
00030 #include "framesvg.h"
00031
00032 namespace Plasma
00033 {
00034
00035 class SliderPrivate
00036 {
00037 public:
00038 SliderPrivate()
00039 {
00040 }
00041
00042 ~SliderPrivate()
00043 {
00044 }
00045
00046 Plasma::FrameSvg *background;
00047 Plasma::FrameSvg *handle;
00048 };
00049
00050 Slider::Slider(QGraphicsWidget *parent)
00051 : QGraphicsProxyWidget(parent),
00052 d(new SliderPrivate)
00053 {
00054 QSlider *native = new QSlider;
00055
00056 connect(native, SIGNAL(sliderMoved(int)), this, SIGNAL(sliderMoved(int)));
00057 connect(native, SIGNAL(valueChanged(int)), this, SIGNAL(valueChanged(int)));
00058
00059 setWidget(native);
00060 native->setAttribute(Qt::WA_NoSystemBackground);
00061
00062 d->background = new Plasma::FrameSvg(this);
00063 d->background->setImagePath("widgets/frame");
00064 d->background->setElementPrefix("sunken");
00065
00066 d->handle = new Plasma::FrameSvg(this);
00067 d->handle->setImagePath("widgets/button");
00068 d->handle->setElementPrefix("normal");
00069 }
00070
00071 Slider::~Slider()
00072 {
00073 delete d;
00074 }
00075
00076 void Slider::paint(QPainter *painter,
00077 const QStyleOptionGraphicsItem *option,
00078 QWidget *widget)
00079 {
00080 if (!styleSheet().isNull()) {
00081 QGraphicsProxyWidget::paint(painter, option, widget);
00082 return;
00083 }
00084
00085 QSlider *slider = nativeWidget();
00086 QStyle *style = slider->style();
00087 QStyleOptionSlider sliderOpt;
00088 sliderOpt.initFrom(slider);
00089
00090
00091 sliderOpt.subControls = QStyle::SC_None;
00092 sliderOpt.activeSubControls = QStyle::SC_None;
00093 sliderOpt.orientation = slider->orientation();
00094 sliderOpt.maximum = slider->maximum();
00095 sliderOpt.minimum = slider->minimum();
00096 sliderOpt.tickPosition = (QSlider::TickPosition)slider->tickPosition();
00097 sliderOpt.tickInterval = slider->tickInterval();
00098 sliderOpt.upsideDown = (slider->orientation() == Qt::Horizontal) ?
00099 (slider->invertedAppearance() != (sliderOpt.direction == Qt::RightToLeft))
00100 : (!slider->invertedAppearance());
00101 sliderOpt.direction = Qt::LeftToRight;
00102 sliderOpt.sliderPosition = slider->sliderPosition();
00103 sliderOpt.sliderValue = slider->value();
00104 sliderOpt.singleStep = slider->singleStep();
00105 sliderOpt.pageStep = slider->pageStep();
00106 if (slider->orientation() == Qt::Horizontal) {
00107 sliderOpt.state |= QStyle::State_Horizontal;
00108 }
00109
00110 QRect backgroundRect =
00111 style->subControlRect(QStyle::CC_Slider, &sliderOpt, QStyle::SC_SliderGroove, slider);
00112 d->background->resizeFrame(backgroundRect.size());
00113 d->background->paintFrame(painter, backgroundRect.topLeft());
00114
00115
00116 if (sliderOpt.tickPosition != QSlider::NoTicks) {
00117 sliderOpt.subControls = QStyle::SC_SliderTickmarks;
00118 sliderOpt.palette.setColor(
00119 QPalette::WindowText, Plasma::Theme::defaultTheme()->color(Theme::TextColor));
00120 style->drawComplexControl(QStyle::CC_Slider, &sliderOpt, painter, slider);
00121 }
00122
00123 QRect handleRect =
00124 style->subControlRect(QStyle::CC_Slider, &sliderOpt, QStyle::SC_SliderHandle, slider);
00125 d->handle->resizeFrame(handleRect.size());
00126 d->handle->paintFrame(painter, handleRect.topLeft());
00127 }
00128
00129 void Slider::wheelEvent(QGraphicsSceneWheelEvent *event)
00130 {
00131 QWheelEvent e(event->pos().toPoint(), event->delta(),event->buttons(),event->modifiers(),event->orientation());
00132 QApplication::sendEvent(widget(), &e);
00133 event->accept();
00134 }
00135
00136 void Slider::setMaximum(int max)
00137 {
00138 static_cast<QSlider*>(widget())->setMaximum(max);
00139 }
00140
00141 int Slider::maximum() const
00142 {
00143 return static_cast<QSlider*>(widget())->maximum();
00144 }
00145
00146 void Slider::setMinimum(int min)
00147 {
00148 static_cast<QSlider*>(widget())->setMinimum(min);
00149 }
00150
00151 int Slider::minimum() const
00152 {
00153 return static_cast<QSlider*>(widget())->minimum();
00154 }
00155
00156 void Slider::setRange(int min, int max)
00157 {
00158 static_cast<QSlider*>(widget())->setRange(min, max);
00159 }
00160
00161 void Slider::setValue(int value)
00162 {
00163 static_cast<QSlider*>(widget())->setValue(value);
00164 }
00165
00166 int Slider::value() const
00167 {
00168 return static_cast<QSlider*>(widget())->value();
00169 }
00170
00171 void Slider::setOrientation(Qt::Orientation orientation)
00172 {
00173 static_cast<QSlider*>(widget())->setOrientation(orientation);
00174 }
00175
00176 Qt::Orientation Slider::orientation() const
00177 {
00178 return static_cast<QSlider*>(widget())->orientation();
00179 }
00180
00181 void Slider::setStyleSheet(const QString &stylesheet)
00182 {
00183 widget()->setStyleSheet(stylesheet);
00184 }
00185
00186 QString Slider::styleSheet()
00187 {
00188 return widget()->styleSheet();
00189 }
00190
00191 QSlider *Slider::nativeWidget() const
00192 {
00193 return static_cast<QSlider*>(widget());
00194 }
00195
00196 }
00197
00198 #include <slider.moc>
00199