345 lines
10 KiB
C++
345 lines
10 KiB
C++
/***************************************************************************
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* Copyright (C) 2008 by Alessandro Diaferia <alediaferia@gmail.com> *
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* Copyright (C) 2007 by Alexis Ménard <darktears31@gmail.com> *
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* Copyright (C) 2007 Sebastian Kuegler <sebas@kde.org> *
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* Copyright (C) 2006 Aaron Seigo <aseigo@kde.org> *
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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 General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, 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 General Public License *
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* 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 "dialog.h"
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#include <QPainter>
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#include <QSvgRenderer>
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#include <QResizeEvent>
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#include <QMouseEvent>
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#ifdef Q_WS_X11
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#include <QX11Info>
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#endif
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#include <QBitmap>
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#include <QtGui/QVBoxLayout>
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#include <QtGui/QGraphicsSceneEvent>
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#include <QtGui/QGraphicsView>
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#include <QtGui/QGraphicsWidget>
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#include <KDebug>
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#include <NETRootInfo>
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#include <plasma/panelsvg.h>
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#include <plasma/theme.h>
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#ifdef Q_WS_X11
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#include <X11/Xlib.h>
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#endif
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const int resizeAreaMargin = 20;
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namespace Plasma
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{
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class DialogPrivate
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{
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public:
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DialogPrivate(Dialog *dialog)
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: q(dialog),
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background(0),
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view(0),
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widget(0),
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resizeCorners(Dialog::NoCorner)
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{
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}
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~DialogPrivate()
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{
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}
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void themeUpdated();
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void adjustView();
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Plasma::Dialog *q;
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/**
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* Holds the background SVG, to be re-rendered when the cache is invalidated,
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* for example by resizing the dialogue.
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*/
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Plasma::PanelSvg *background;
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QGraphicsView *view;
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QGraphicsWidget *widget;
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Dialog::ResizeCorners resizeCorners;
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QMap<Dialog::ResizeCorner, QRect> resizeAreas;
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Dialog::ResizeCorner resizeStartCorner;
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};
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void DialogPrivate::themeUpdated()
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{
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const int topHeight = background->marginSize(Plasma::TopMargin);
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const int leftWidth = background->marginSize(Plasma::LeftMargin);
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const int rightWidth = background->marginSize(Plasma::RightMargin);
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const int bottomHeight = background->marginSize(Plasma::BottomMargin);
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q->setContentsMargins(leftWidth, topHeight, rightWidth, bottomHeight);
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}
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void DialogPrivate::adjustView()
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{
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if (view && widget) {
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kDebug() << "resize the view.";
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QSize prevSize = q->size();
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//reposition and resize the view.
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view->setSceneRect(widget->mapToScene(widget->boundingRect()).boundingRect());
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view->resize(widget->size().toSize());
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view->centerOn(widget);
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//set the sizehints correctly:
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int left, top, right, bottom;
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q->getContentsMargins(&left, &top, &right, &bottom);
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q->setMinimumSize(view->size().width() + left + right,
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view->size().height() + top + bottom);
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q->setMaximumSize(view->size().width() + left + right,
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view->size().height() + top + bottom);
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q->updateGeometry();
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if (q->size() != prevSize) {
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//the size of the dialog has changed, emit the signal:
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emit q->dialogResized();
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}
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}
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}
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Dialog::Dialog( QWidget * parent, Qt::WindowFlags f )
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: QWidget(parent, f),
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d(new DialogPrivate(this))
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{
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d->background = new PanelSvg(this);
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d->background->setImagePath("dialogs/background");
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d->background->setEnabledBorders(PanelSvg::AllBorders);
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d->background->resizePanel(size());
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connect(d->background, SIGNAL(repaintNeeded()), this, SLOT(update()));
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connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), this, SLOT(themeUpdated()));
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d->themeUpdated();
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setMouseTracking(true);
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}
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Dialog::~Dialog()
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{
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delete d;
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}
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void Dialog::paintEvent(QPaintEvent *e)
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{
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QPainter p(this);
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p.setRenderHint(QPainter::Antialiasing);
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p.setClipRect(e->rect());
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p.setCompositionMode(QPainter::CompositionMode_Source );
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p.fillRect(rect(), Qt::transparent);
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d->background->paintPanel(&p);
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//we set the resize handlers
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d->resizeAreas.clear();
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d->resizeAreas[Dialog::NorthEast] = QRect(rect().right() - resizeAreaMargin, 0,
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resizeAreaMargin, resizeAreaMargin);
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d->resizeAreas[Dialog::NorthWest] = QRect(0,0, resizeAreaMargin, resizeAreaMargin);
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d->resizeAreas[Dialog::SouthEast] = QRect(rect().right() - resizeAreaMargin,
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rect().bottom() - resizeAreaMargin,
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resizeAreaMargin, resizeAreaMargin);
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d->resizeAreas[Dialog::SouthWest] = QRect(0, rect().bottom() - resizeAreaMargin,
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resizeAreaMargin, resizeAreaMargin);
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}
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void Dialog::mouseMoveEvent(QMouseEvent *event)
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{
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if (d->resizeAreas[Dialog::NorthEast].contains(event->pos()) && d->resizeCorners & Dialog::NorthEast) {
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setCursor(Qt::SizeBDiagCursor);
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} else if (d->resizeAreas[Dialog::NorthWest].contains(event->pos()) && d->resizeCorners & Dialog::NorthWest) {
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setCursor(Qt::SizeFDiagCursor);
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} else if (d->resizeAreas[Dialog::SouthEast].contains(event->pos()) && d->resizeCorners & Dialog::SouthEast) {
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setCursor(Qt::SizeFDiagCursor);
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} else if (d->resizeAreas[Dialog::SouthWest].contains(event->pos()) && d->resizeCorners & Dialog::SouthWest) {
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setCursor(Qt::SizeBDiagCursor);
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} else {
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unsetCursor();
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}
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// here we take care of resize..
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if (d->resizeStartCorner != Dialog::NoCorner ) {
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int newWidth;
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int newHeight;
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QPoint position;
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switch(d->resizeStartCorner) {
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case Dialog::NorthEast:
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newWidth = event->x();
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newHeight = height() - event->y();
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position = QPoint(x(), y() + height() - newHeight);
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break;
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case Dialog::NorthWest:
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newWidth = width() - event->x();
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newHeight = height() - event->y();
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position = QPoint(x() + width() - newWidth, y() + height() - newHeight);
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break;
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case Dialog::SouthWest:
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newWidth = width() - event->x();
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newHeight = event->y();
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position = QPoint(x() + width() - newWidth, y());
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break;
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case Dialog::SouthEast:
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newWidth = event->x();
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newHeight = event->y();
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position = QPoint(x(), y());
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break;
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default:
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newWidth = width();
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newHeight = height();
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position = QPoint(x(), y());
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break;
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}
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// let's check for limitations
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if (newWidth < minimumWidth() || newWidth > maximumWidth()) {
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newWidth = width();
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position.setX(x());
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}
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if (newHeight < minimumHeight() || newHeight > maximumHeight()) {
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newHeight = height();
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position.setY(y());
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}
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setGeometry(QRect(position, QSize(newWidth, newHeight)));
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}
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QWidget::mouseMoveEvent(event);
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}
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void Dialog::mousePressEvent(QMouseEvent *event)
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{
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if (d->resizeAreas[Dialog::NorthEast].contains(event->pos()) && d->resizeCorners & Dialog::NorthEast) {
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d->resizeStartCorner = Dialog::NorthEast;
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} else if (d->resizeAreas[Dialog::NorthWest].contains(event->pos()) && d->resizeCorners & Dialog::NorthWest) {
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d->resizeStartCorner = Dialog::NorthWest;
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} else if (d->resizeAreas[Dialog::SouthEast].contains(event->pos()) && d->resizeCorners & Dialog::SouthEast) {
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d->resizeStartCorner = Dialog::SouthEast;
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} else if (d->resizeAreas[Dialog::SouthWest].contains(event->pos()) && d->resizeCorners & Dialog::SouthWest) {
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d->resizeStartCorner = Dialog::SouthWest;
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} else {
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d->resizeStartCorner = Dialog::NoCorner;
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}
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QWidget::mousePressEvent(event);
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}
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void Dialog::mouseReleaseEvent(QMouseEvent *event)
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{
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d->resizeStartCorner = Dialog::NoCorner;
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QWidget::mouseReleaseEvent(event);
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}
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void Dialog::resizeEvent(QResizeEvent *e)
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{
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d->background->resizePanel(e->size());
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setMask(d->background->mask());
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}
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void Dialog::setGraphicsWidget(QGraphicsWidget *widget)
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{
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if (d->widget) {
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d->widget->removeEventFilter(this);
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}
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d->widget = widget;
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if (widget) {
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if (!layout()) {
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QVBoxLayout *lay = new QVBoxLayout(this);
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lay->setMargin(0);
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lay->setSpacing(0);
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}
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if (!d->view) {
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d->view = new QGraphicsView(this);
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d->view->setFrameShape(QFrame::NoFrame);
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d->view->viewport()->setAutoFillBackground(false);
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layout()->addWidget(d->view);
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}
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d->view->setScene(widget->scene());
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d->adjustView();
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adjustSize();
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widget->installEventFilter(this);
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} else {
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delete d->view;
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d->view = 0;
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}
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}
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QGraphicsWidget *Dialog::graphicsWidget()
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{
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return d->widget;
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}
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bool Dialog::eventFilter(QObject *watched, QEvent *event)
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{
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if (watched == d->widget && (event->type() == QEvent::GraphicsSceneResize ||
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event->type() == QEvent::GraphicsSceneMove)) {
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d->adjustView();
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}
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return QWidget::eventFilter(watched, event);
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}
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void Dialog::hideEvent(QHideEvent * event)
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{
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Q_UNUSED(event);
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emit dialogVisible(false);
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}
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void Dialog::showEvent(QShowEvent * event)
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{
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Q_UNUSED(event);
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emit dialogVisible(true);
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}
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void Dialog::setResizeHandleCorners(ResizeCorners corners)
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{
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d->resizeCorners = corners;
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update();
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}
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Dialog::ResizeCorners Dialog::resizeCorners() const
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{
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return d->resizeCorners;
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}
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}
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#include "dialog.moc"
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