plasma-framework/private/tooltip.cpp

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/*
* Copyright 2007 by Dan Meltzer <hydrogen@notyetimplemented.com>
* Copyright (C) 2008 by Alexis Ménard <darktears31@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "tooltip_p.h"
#include "windowpreview_p.h"
#include <QBitmap>
#include <QGridLayout>
#include <QLabel>
#include <QMouseEvent>
#include <QPainter>
#include <QPalette>
#include <QTextDocument>
#include <QTimeLine>
#ifdef Q_WS_X11
#include <QX11Info>
#include <netwm.h>
#endif
#include <kdebug.h>
#include <kglobal.h>
#include <kglobalsettings.h>
#include <plasma/plasma.h>
#include <plasma/theme.h>
#include <plasma/framesvg.h>
namespace Plasma {
class TipTextWidget : public QWidget
{
public:
TipTextWidget(QWidget *parent)
: QWidget(parent),
document(new QTextDocument(this))
{
//d->text->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
// QTextOption op;
// op.setWrapMode(QTextOption::WordWrap);
// document->setDefaultTextOption(op);
}
void setStyleSheet(const QString &css)
{
document->setDefaultStyleSheet(css);
}
void setContent(const ToolTipContent &data)
{
document->clear();
data.registerResources(document);
document->setHtml("<p><b>" + data.mainText() + "</b><br>" + data.subText() + "</p>");
document->adjustSize();
update();
}
QSize minimumSizeHint() const
{
return document->size().toSize();
}
void paintEvent(QPaintEvent *event)
{
QPainter p(this);
document->drawContents(&p, event->rect());
}
private:
QTextDocument *document;
};
class ToolTipPrivate
{
public:
ToolTipPrivate()
: text(0),
imageLabel(0),
preview(0),
source(0),
timeline(0),
autohide(true)
{ }
TipTextWidget *text;
QLabel *imageLabel;
WindowPreview *preview;
FrameSvg *background;
QPointer<QObject> source;
QTimeLine *timeline;
QPoint to;
QPoint from;
bool autohide;
};
void ToolTip::showEvent(QShowEvent *e)
{
QWidget::showEvent(e);
d->preview->setInfo();
}
void ToolTip::hideEvent(QHideEvent *e)
{
QWidget::hideEvent(e);
if (d->source) {
QMetaObject::invokeMethod(d->source, "toolTipHidden");
}
}
void ToolTip::mouseReleaseEvent(QMouseEvent *event)
{
if (rect().contains(event->pos())) {
hide();
}
}
ToolTip::ToolTip(QWidget *parent)
: QWidget(parent),
d(new ToolTipPrivate())
{
setWindowFlags(Qt::ToolTip);
QGridLayout *l = new QGridLayout;
d->preview = new WindowPreview(this);
d->text = new TipTextWidget(this);
d->imageLabel = new QLabel(this);
d->imageLabel->setAlignment(Qt::AlignTop | Qt::AlignLeft);
d->background = new FrameSvg(this);
d->background->setImagePath("widgets/tooltip");
d->background->setEnabledBorders(FrameSvg::AllBorders);
updateTheme();
connect(d->background, SIGNAL(repaintNeeded()), this, SLOT(updateTheme()));
l->addWidget(d->preview, 0, 0, 1, 2);
l->addWidget(d->imageLabel, 1, 0);
l->addWidget(d->text, 1, 1);
setLayout(l);
}
ToolTip::~ToolTip()
{
delete d;
}
void ToolTip::checkSize()
{
QSize hint = sizeHint();
QSize current = size();
if (hint != current) {
/*
#ifdef Q_WS_X11
NETRootInfo i(QX11Info::display(), 0);
int flags = NET::BottomLeft;
i.moveResizeWindowRequest(winId(), flags,
x(), y() + (current.height() - hint.height()),
hint.width(), hint.height());
#else
move(x(), y() + (current.height() - hint.height()));
resize(hint);
#endif
*/
/*
kDebug() << "resizing from" << current << "to" << hint
<< "and moving from" << pos() << "to"
<< x() << y() + (current.height() - hint.height())
<< current.height() - hint.height();
*/
resize(hint);
move(x(), y() + (current.height() - hint.height()));
}
}
void ToolTip::setContent(QObject *tipper, const ToolTipContent &data)
{
//reset our size
d->text->setContent(data);
d->imageLabel->setPixmap(data.image());
d->preview->setWindowId(data.windowToPreview());
d->autohide = data.autohide();
d->source = tipper;
if (isVisible()) {
d->preview->setInfo();
//kDebug() << "about to check size";
checkSize();
}
}
void ToolTip::prepareShowing(bool cueUpdate)
{
if (cueUpdate && d->source) {
QMetaObject::invokeMethod(d->source, "toolTipAboutToShow");
}
if (d->preview->windowId() != 0) {
// show/hide the preview area
d->preview->show();
} else {
d->preview->hide();
}
layout()->activate();
d->preview->setInfo();
//kDebug() << "about to check size";
checkSize();
}
void ToolTip::moveTo(const QPoint &to)
{
if (!isVisible() ||
!(KGlobalSettings::graphicEffectsLevel() & KGlobalSettings::SimpleAnimationEffects)) {
move(to);
return;
}
d->from = QPoint();
d->to = to;
if (!d->timeline) {
d->timeline = new QTimeLine(250, this);
d->timeline->setFrameRange(0, 10);
d->timeline->setCurveShape(QTimeLine::EaseInCurve);
connect(d->timeline, SIGNAL(valueChanged(qreal)), this, SLOT(animateMove(qreal)));
}
d->timeline->stop();
d->timeline->start();
}
void ToolTip::animateMove(qreal progress)
{
if (d->from.isNull()) {
d->from = pos();
}
if (qFuzzyCompare(progress, 1.0)) {
move(d->to);
return;
}
move(d->from.x() + ((d->to.x() - d->from.x()) * progress),
d->from.y() + ((d->to.y() - d->from.y()) * progress));
}
void ToolTip::resizeEvent(QResizeEvent *e)
{
QWidget::resizeEvent(e);
d->background->resizeFrame(size());
setMask(d->background->mask());
}
void ToolTip::paintEvent(QPaintEvent *e)
{
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
painter.setClipRect(e->rect());
painter.setCompositionMode(QPainter::CompositionMode_Source);
painter.fillRect(rect(), Qt::transparent);
d->background->paintFrame(&painter);
}
bool ToolTip::autohide() const
{
return d->autohide;
}
void ToolTip::updateTheme()
{
const int topHeight = d->background->marginSize(Plasma::TopMargin);
const int leftWidth = d->background->marginSize(Plasma::LeftMargin);
const int rightWidth = d->background->marginSize(Plasma::RightMargin);
const int bottomHeight = d->background->marginSize(Plasma::BottomMargin);
setContentsMargins(leftWidth, topHeight, rightWidth, bottomHeight);
// Make the tooltip use Plasma's colorscheme
QColor textColor = Plasma::Theme::defaultTheme()->color(Plasma::Theme::TextColor);
QPalette plasmaPalette = QPalette();
plasmaPalette.setColor(QPalette::Window,
Plasma::Theme::defaultTheme()->color(Plasma::Theme::BackgroundColor));
plasmaPalette.setColor(QPalette::WindowText, textColor);
setAutoFillBackground(true);
setPalette(plasmaPalette);
d->text->setStyleSheet(QString("p { color: %1; }").arg(textColor.name()));
update();
}
} // namespace Plasma
#include "tooltip_p.moc"