2008-07-16 17:17:44 +02:00
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/*
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* Copyright 2007 by Dan Meltzer <hydrogen@notyetimplemented.com>
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* Copyright (C) 2008 by Alexis Ménard <darktears31@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "tooltip_p.h"
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#include <QBitmap>
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#include <QHBoxLayout>
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#include <QLabel>
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#include <QMouseEvent>
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#include <QPixmap>
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#include <QTimer>
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#include <QGraphicsView>
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#ifdef Q_WS_X11
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#include <QX11Info>
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#endif
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#include <KDebug>
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#include <KGlobal>
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#include <KWindowSystem>
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#include <plasma/theme.h>
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#include <plasma/panelsvg.h>
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#ifdef Q_WS_X11
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#include <X11/Xlib.h>
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#include <fixx11h.h>
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#endif
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#include "plasma/plasma.h"
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namespace Plasma {
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class ToolTipPrivate
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{
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public:
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ToolTipPrivate(QObject *s)
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2008-07-16 17:17:44 +02:00
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: label(0)
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, imageLabel(0)
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, preview(0)
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, windowToPreview(0)
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2008-07-17 01:27:34 +02:00
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, source(s)
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2008-07-16 17:17:44 +02:00
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{ }
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QLabel *label;
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QLabel *imageLabel;
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WindowPreview *preview;
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WId windowToPreview;
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PanelSvg *background;
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2008-07-17 01:27:34 +02:00
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QObject *source;
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2008-07-16 17:17:44 +02:00
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};
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void ToolTip::showEvent(QShowEvent *e)
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{
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QWidget::showEvent(e);
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d->preview->setInfo();
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}
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2008-07-17 01:27:34 +02:00
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void ToolTip::hideEvent(QHideEvent *e)
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{
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QWidget::hideEvent(e);
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if (d->source) {
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QMetaObject::invokeMethod(d->source, SLOT(toolTipHidden()));
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}
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}
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2008-07-16 17:17:44 +02:00
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void ToolTip::mouseReleaseEvent(QMouseEvent* event)
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{
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if (rect().contains(event->pos())) {
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hide();
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}
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}
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2008-07-17 01:27:34 +02:00
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ToolTip::ToolTip(QObject *source)
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: QWidget(0)
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2008-07-17 01:27:34 +02:00
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, d(new ToolTipPrivate(source))
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{
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if (source) {
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connect(source, SIGNAL(destroyed(QObject*)), this, SLOT(sourceDestroyed()));
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}
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2008-07-16 17:17:44 +02:00
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setWindowFlags(Qt::ToolTip);
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QGridLayout *l = new QGridLayout;
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d->preview = new WindowPreview;
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d->label = new QLabel;
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d->label->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
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d->label->setWordWrap(true);
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d->imageLabel = new QLabel;
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d->imageLabel->setAlignment(Qt::AlignTop | Qt::AlignLeft);
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d->background = new PanelSvg(this);
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connect(d->background, SIGNAL(repaintNeeded()), this, SLOT(update()));
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l->addWidget(d->preview, 0, 0, 1, 2);
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l->addWidget(d->imageLabel, 1, 0);
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l->addWidget(d->label, 1, 1);
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setLayout(l);
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}
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ToolTip::~ToolTip()
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{
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delete d;
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}
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2008-07-16 17:18:02 +02:00
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void ToolTip::setContent(const ToolTipManager::ToolTipContent &data)
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{
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//reset our size
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d->label->setText("<qt><b>" + data.mainText + "</b><br>" + data.subText + "</qt>");
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d->imageLabel->setPixmap(data.image);
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d->windowToPreview = data.windowToPreview;
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d->preview->setWindowId( d->windowToPreview );
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if (isVisible()) {
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resize(sizeHint());
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}
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}
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void ToolTip::prepareShowing()
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{
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if (d->source) {
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QMetaObject::invokeMethod(d->source, SLOT(toolTipAboutToShow()));
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}
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if (d->windowToPreview != 0) {
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// show/hide the preview area
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d->preview->show();
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} else {
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d->preview->hide();
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}
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2008-07-17 01:27:34 +02:00
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layout()->activate();
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resize(sizeHint());
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2008-07-17 01:27:34 +02:00
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2008-07-16 17:17:44 +02:00
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if (isVisible()) {
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d->preview->setInfo();
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} else {
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show();
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}
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}
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void ToolTip::resizeEvent(QResizeEvent *e)
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{
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QWidget::resizeEvent(e);
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d->background->resizePanel(size());
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setMask(d->background->mask());
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}
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void ToolTip::paintEvent(QPaintEvent *e)
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{
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing);
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painter.setClipRect(e->rect());
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painter.setCompositionMode(QPainter::CompositionMode_Source );
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painter.fillRect(rect(), Qt::transparent);
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d->background->paintPanel(&painter, rect());
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}
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2008-07-17 01:27:34 +02:00
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void ToolTip::sourceDestroyed()
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{
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d->source = 0;
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}
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2008-07-16 17:17:44 +02:00
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void ToolTip::updateTheme()
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{
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d->background->setImagePath("widgets/tooltip");
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d->background->setEnabledBorders(PanelSvg::AllBorders);
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const int topHeight = d->background->marginSize(Plasma::TopMargin);
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const int leftWidth = d->background->marginSize(Plasma::LeftMargin);
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const int rightWidth = d->background->marginSize(Plasma::RightMargin);
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const int bottomHeight = d->background->marginSize(Plasma::BottomMargin);
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setContentsMargins(leftWidth, topHeight, rightWidth, bottomHeight);
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// Make the tooltip use Plasma's colorscheme
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QPalette plasmaPalette = QPalette();
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plasmaPalette.setColor(QPalette::Window, Plasma::Theme::defaultTheme()->color(Plasma::Theme::BackgroundColor));
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plasmaPalette.setColor(QPalette::WindowText, Plasma::Theme::defaultTheme()->color(Plasma::Theme::TextColor));
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setAutoFillBackground(true);
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setPalette(plasmaPalette);
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}
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// A widget which reserves area for window preview and sets hints on the toplevel
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// tooltip widget that tells KWin to render the preview in this area. This depends
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// on KWin's TaskbarThumbnail compositing effect (which is here detected).
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void WindowPreview::setWindowId(WId w)
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{
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if (!previewsAvailable()) {
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id = 0;
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return;
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}
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id = w;
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readWindowSize();
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}
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bool WindowPreview::previewsAvailable() const
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{
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if (!KWindowSystem::compositingActive()) {
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return false;
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}
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#ifdef Q_WS_X11
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// hackish way to find out if KWin has the effect enabled,
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// TODO provide proper support
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Display* dpy = QX11Info::display();
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Atom atom = XInternAtom(dpy, "_KDE_WINDOW_PREVIEW", False);
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int cnt;
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Atom* list = XListProperties(dpy, DefaultRootWindow( dpy ), &cnt);
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if (list != NULL) {
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bool ret = ( qFind(list, list + cnt, atom) != list + cnt );
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XFree(list);
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return ret;
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}
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#endif
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return false;
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}
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QSize WindowPreview::sizeHint() const
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{
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if (id == 0) {
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return QSize();
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}
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if (!windowSize.isValid()) {
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readWindowSize();
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}
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QSize s = windowSize;
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s.scale(200, 150, Qt::KeepAspectRatio);
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return s;
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}
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void WindowPreview::readWindowSize() const
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{
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#ifdef Q_WS_X11
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Window r;
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int x, y;
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unsigned int w, h, b, d;
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if (XGetGeometry(QX11Info::display(), id, &r, &x, &y, &w, &h, &b, &d)) {
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windowSize = QSize( w, h );
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} else {
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windowSize = QSize();
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}
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#else
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windowSize = QSize();
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#endif
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}
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void WindowPreview::setInfo()
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{
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#ifdef Q_WS_X11
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Display *dpy = QX11Info::display();
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Atom atom = XInternAtom(dpy, "_KDE_WINDOW_PREVIEW", False);
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if (id == 0) {
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XDeleteProperty(dpy, parentWidget()->winId(), atom);
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return;
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}
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if (!windowSize.isValid()) {
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readWindowSize();
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}
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if (!windowSize.isValid()) {
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XDeleteProperty(dpy, parentWidget()->winId(), atom);
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return;
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}
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Q_ASSERT( parentWidget()->isWindow()); // parent must be toplevel
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long data[] = { 1, 5, id, x(), y(), width(), height() };
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XChangeProperty(dpy, parentWidget()->winId(), atom, atom, 32, PropModeReplace,
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reinterpret_cast< unsigned char* >( data ), sizeof( data ) / sizeof( data[ 0 ] ));
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#endif
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}
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}
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#include "tooltip_p.moc"
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