716 lines
21 KiB
C++
716 lines
21 KiB
C++
/*
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* Copyright 2008 by Alessandro Diaferia <alediaferia@gmail.com>
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* Copyright 2007 by Alexis Ménard <darktears31@gmail.com>
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* Copyright 2007 Sebastian Kuegler <sebas@kde.org>
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* Copyright 2006 Aaron Seigo <aseigo@kde.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor,
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* 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 <QTimer>
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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 <QApplication>
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#include <QDesktopWidget>
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#include <QVarLengthArray>
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#include <kdebug.h>
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#include <kwindowsystem.h>
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#include <netwm.h>
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#include "plasma/applet.h"
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#include "plasma/animator.h"
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#include "plasma/extenders/extender.h"
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#include "plasma/private/extender_p.h"
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#include "plasma/framesvg.h"
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#include "plasma/theme.h"
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#include "plasma/windoweffects.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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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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resizeCorners(Dialog::NoCorner),
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resizeStartCorner(Dialog::NoCorner),
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moveTimer(0),
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aspectRatioMode(Plasma::IgnoreAspectRatio)
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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 themeChanged();
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void adjustView();
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void updateResizeCorners();
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int calculateWidthForHeightAndRatio(int height, qreal ratio);
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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::FrameSvg *background;
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QGraphicsView *view;
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QWeakPointer<QGraphicsWidget> graphicsWidgetPtr;
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Dialog::ResizeCorners resizeCorners;
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QMap<Dialog::ResizeCorner, QRect> resizeAreas;
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int resizeStartCorner;
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QTimer *moveTimer;
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QTimer *adjustViewTimer;
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Plasma::AspectRatioMode aspectRatioMode;
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};
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void DialogPrivate::themeChanged()
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{
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QGraphicsWidget *graphicsWidget = graphicsWidgetPtr.data();
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qreal topHeight;
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qreal leftWidth;
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qreal rightWidth;
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qreal bottomHeight;
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//kDebug() << leftWidth << topHeight << rightWidth << bottomHeight;
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if (Plasma::Theme::defaultTheme()->windowTranslucencyEnabled()) {
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q->setMask(background->mask());
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} else {
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q->setMask(QRect(QPoint(0, 0), q->size()));
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}
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FrameSvg::EnabledBorders borders = FrameSvg::AllBorders;
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Extender *extender = qobject_cast<Extender*>(graphicsWidget);
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Plasma::Applet *applet = 0;
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if (extender) {
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applet = extender->d->applet;
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} else if (graphicsWidget) {
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QObject *pw = graphicsWidget;
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while ((pw = pw->parent())) {
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applet = dynamic_cast<Plasma::Applet *>(pw);
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if (applet) {
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break;
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}
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}
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}
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if (applet) {
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background->getMargins(leftWidth, topHeight, rightWidth, bottomHeight);
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switch (applet->location()) {
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case BottomEdge:
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borders &= ~FrameSvg::BottomBorder;
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leftWidth = 0;
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rightWidth = 0;
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bottomHeight = 0;
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break;
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case TopEdge:
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borders &= ~FrameSvg::TopBorder;
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topHeight = 0;
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leftWidth = 0;
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rightWidth = 0;
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break;
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case LeftEdge:
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borders &= ~FrameSvg::LeftBorder;
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leftWidth = 0;
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rightWidth = 0;
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break;
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case RightEdge:
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borders &= ~FrameSvg::RightBorder;
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leftWidth = 0;
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rightWidth = 0;
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break;
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default:
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break;
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}
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}
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if (!extender && q->isVisible()) {
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//remove borders at the edge of the desktop
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QDesktopWidget *desktop = QApplication::desktop();
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QRect avail = desktop->availableGeometry(desktop->screenNumber(q));
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QRect dialogGeom = q->geometry();
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if (dialogGeom.left() <= avail.left()) {
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borders &= ~FrameSvg::LeftBorder;
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}
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if (dialogGeom.top() <= avail.top()) {
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borders &= ~FrameSvg::TopBorder;
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}
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//FIXME: that 2 pixels offset has probably something to do with kwin
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if (dialogGeom.right() + 2 > avail.right()) {
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borders &= ~FrameSvg::RightBorder;
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}
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if (dialogGeom.bottom() + 2 > avail.bottom()) {
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borders &= ~FrameSvg::BottomBorder;
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}
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}
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background->setEnabledBorders(borders);
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if (!extender) {
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background->getMargins(leftWidth, topHeight, rightWidth, bottomHeight);
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}
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q->setContentsMargins(leftWidth, topHeight, rightWidth, bottomHeight);
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q->update();
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}
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void DialogPrivate::adjustView()
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{
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QGraphicsWidget *graphicsWidget = graphicsWidgetPtr.data();
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if (view && graphicsWidget) {
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const int prevStartCorner = resizeStartCorner;
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resizeStartCorner = -1;
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QSize prevSize = q->size();
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/*
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kDebug() << "Widget size:" << graphicsWidget->size()
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<< "| Widget size hint:" << graphicsWidget->effectiveSizeHint(Qt::PreferredSize)
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<< "| Widget minsize hint:" << graphicsWidget->minimumSize()
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<< "| Widget maxsize hint:" << graphicsWidget->maximumSize()
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<< "| Widget bounding rect:" << graphicsWidget->sceneBoundingRect();
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*/
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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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QDesktopWidget *desktop = QApplication::desktop();
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QSize maxSize = desktop->availableGeometry(desktop->screenNumber(q)).size();
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q->setMinimumSize(qMin(int(graphicsWidget->minimumSize().width()) + left + right, maxSize.width()),
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qMin(int(graphicsWidget->minimumSize().height()) + top + bottom, maxSize.height()));
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q->setMaximumSize(qMin(int(graphicsWidget->maximumSize().width()) + left + right, maxSize.width()),
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qMin(int(graphicsWidget->maximumSize().height()) + top + bottom, maxSize.height()));
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q->resize(qMin(int(graphicsWidget->size().width()) + left + right, maxSize.width()),
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qMin(int(graphicsWidget->size().height()) + top + bottom, maxSize.height()));
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q->updateGeometry();
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//reposition and resize the view.
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//force a valid rect, otherwise it will take up the whole scene
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QRectF sceneRect(graphicsWidget->sceneBoundingRect());
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sceneRect.setWidth(qMax(qreal(1), sceneRect.width()));
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sceneRect.setHeight(qMax(qreal(1), sceneRect.height()));
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view->setSceneRect(sceneRect);
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view->resize(graphicsWidget->size().toSize());
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view->centerOn(graphicsWidget);
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//if the view resized and a border is disabled move the dialog to make sure it will still look attached to panel/screen edge
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qreal topHeight;
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qreal leftWidth;
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qreal rightWidth;
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qreal bottomHeight;
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background->getMargins(leftWidth, topHeight, rightWidth, bottomHeight);
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if (rightWidth == 0) {
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q->move(q->pos().x() + (prevSize.width() - q->size().width()), q->pos().y());
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}
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if (bottomHeight == 0) {
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q->move(q->pos().x(), q->pos().y() + (prevSize.height() - q->size().height()));
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}
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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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resizeStartCorner = prevStartCorner;
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}
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}
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int DialogPrivate::calculateWidthForHeightAndRatio(int height, qreal ratio)
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{
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switch (aspectRatioMode) {
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case KeepAspectRatio:
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return qRound(height * ratio);
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break;
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case Square:
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return height;
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break;
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case ConstrainedSquare:
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return height;
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break;
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default:
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return -1;
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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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setAttribute(Qt::WA_TranslucentBackground);
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setWindowFlags(Qt::FramelessWindowHint);
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d->background = new FrameSvg(this);
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d->background->setImagePath("dialogs/background");
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d->background->setEnabledBorders(FrameSvg::AllBorders);
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d->background->resizeFrame(size());
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QPalette pal = palette();
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pal.setColor(backgroundRole(), Qt::transparent);
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setPalette(pal);
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WindowEffects::overrideShadow(winId(), true);
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d->adjustViewTimer = new QTimer(this);
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d->adjustViewTimer->setSingleShot(true);
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connect(d->adjustViewTimer, SIGNAL(timeout()), this, SLOT(adjustView()));
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connect(d->background, SIGNAL(repaintNeeded()), this, SLOT(update()));
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connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), this, SLOT(themeChanged()));
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d->themeChanged();
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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.setCompositionMode(QPainter::CompositionMode_Source);
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d->background->paintFrame(&p, e->rect(), e->rect());
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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())) {
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setCursor(Qt::SizeBDiagCursor);
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} else if (d->resizeAreas[Dialog::NorthWest].contains(event->pos())) {
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setCursor(Qt::SizeFDiagCursor);
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} else if (d->resizeAreas[Dialog::SouthEast].contains(event->pos())) {
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setCursor(Qt::SizeFDiagCursor);
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} else if (d->resizeAreas[Dialog::SouthWest].contains(event->pos())) {
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setCursor(Qt::SizeBDiagCursor);
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} else if (!(event->buttons() & Qt::LeftButton)) {
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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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qreal aspectRatio = (qreal)width() / (qreal)height();
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switch(d->resizeStartCorner) {
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case Dialog::NorthEast:
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newHeight = qMin(maximumHeight(), qMax(minimumHeight(), height() - event->y()));
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newWidth = d->calculateWidthForHeightAndRatio(newHeight, aspectRatio);
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if (newWidth == -1) {
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newWidth = qMin(maximumWidth(), qMax(minimumWidth(), event->x()));
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}
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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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newHeight = qMin(maximumHeight(), qMax(minimumHeight(), height() - event->y()));
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newWidth = d->calculateWidthForHeightAndRatio(newHeight, aspectRatio);
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if (newWidth == -1) {
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newWidth = qMin(maximumWidth(), qMax(minimumWidth(), width() - event->x()));
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}
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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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newHeight = qMin(maximumHeight(), qMax(minimumHeight(), event->y()));
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newWidth = d->calculateWidthForHeightAndRatio(newHeight, aspectRatio);
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if (newWidth == -1) {
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newWidth = qMin(maximumWidth(), qMax(minimumWidth(), width() - event->x()));
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}
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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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newHeight = qMin(maximumHeight(), qMax(minimumHeight(), event->y()));
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newWidth = d->calculateWidthForHeightAndRatio(newHeight, aspectRatio);
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if (newWidth == -1) {
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newWidth = qMin(maximumWidth(), qMax(minimumWidth(), event->x()));
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}
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position = QPoint(x(), y());
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break;
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default:
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newHeight = qMin(maximumHeight(), qMax(minimumHeight(), height()));
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newWidth = d->calculateWidthForHeightAndRatio(newHeight, aspectRatio);
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if (newWidth == -1) {
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newWidth = qMin(maximumWidth(), qMax(minimumWidth(), width()));
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}
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position = QPoint(x(), y());
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break;
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}
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if ((newWidth >= minimumSize().width()) && (newHeight >= minimumSize().height())) {
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setGeometry(QRect(position, QSize(newWidth, newHeight)));
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}
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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())) {
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d->resizeStartCorner = Dialog::NorthEast;
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} else if (d->resizeAreas[Dialog::NorthWest].contains(event->pos())) {
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d->resizeStartCorner = Dialog::NorthWest;
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} else if (d->resizeAreas[Dialog::SouthEast].contains(event->pos())) {
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d->resizeStartCorner = Dialog::SouthEast;
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} else if (d->resizeAreas[Dialog::SouthWest].contains(event->pos())) {
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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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if (d->resizeStartCorner != Dialog::NoCorner) {
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d->resizeStartCorner = Dialog::NoCorner;
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unsetCursor();
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emit dialogResized();
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}
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QWidget::mouseReleaseEvent(event);
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}
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void Dialog::keyPressEvent(QKeyEvent *event)
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{
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if (event->key() == Qt::Key_Escape) {
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hide();
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}
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}
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bool Dialog::event(QEvent *event)
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{
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if (event->type() == QEvent::Paint) {
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QPainter p(this);
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p.setCompositionMode(QPainter::CompositionMode_Source);
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p.fillRect(rect(), Qt::transparent);
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}
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return QWidget::event(event);
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}
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void Dialog::resizeEvent(QResizeEvent *e)
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{
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d->background->resizeFrame(e->size());
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if (Plasma::Theme::defaultTheme()->windowTranslucencyEnabled()) {
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clearMask();
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} else {
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setMask(QRect(QPoint(0, 0), size()));
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}
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if (d->resizeStartCorner != -1 && d->view && d->graphicsWidgetPtr) {
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QGraphicsWidget *graphicsWidget = d->graphicsWidgetPtr.data();
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graphicsWidget->resize(d->view->size());
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QRectF sceneRect(graphicsWidget->sceneBoundingRect());
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sceneRect.setWidth(qMax(qreal(1), sceneRect.width()));
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sceneRect.setHeight(qMax(qreal(1), sceneRect.height()));
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d->view->setSceneRect(sceneRect);
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d->view->centerOn(graphicsWidget);
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}
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d->updateResizeCorners();
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}
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void DialogPrivate::updateResizeCorners()
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{
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const int resizeAreaMargin = 20;
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const QRect r = q->rect();
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const FrameSvg::EnabledBorders borders = background->enabledBorders();
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// IMPLEMENTATION NOTE: we set resize corners for the corners set, but also
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// for the complimentary corners if we've cut out an edge of our SVG background
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// which implies we are up against an immovable edge (e.g. a screen edge)
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resizeAreas.clear();
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if (resizeCorners & Dialog::NorthEast ||
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(resizeCorners & Dialog::NorthWest && !(borders & FrameSvg::LeftBorder)) ||
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(resizeCorners & Dialog::SouthEast && !(borders & FrameSvg::BottomBorder))) {
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resizeAreas[Dialog::NorthEast] = QRect(r.right() - resizeAreaMargin, 0,
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resizeAreaMargin, resizeAreaMargin);
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}
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if (resizeCorners & Dialog::NorthWest ||
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(resizeCorners & Dialog::NorthEast && !(borders & FrameSvg::RightBorder)) ||
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(resizeCorners & Dialog::SouthWest && !(borders & FrameSvg::BottomBorder))) {
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resizeAreas[Dialog::NorthWest] = QRect(0, 0, resizeAreaMargin, resizeAreaMargin);
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}
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if (resizeCorners & Dialog::SouthEast ||
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(resizeCorners & Dialog::SouthWest && !(borders & FrameSvg::LeftBorder)) ||
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(resizeCorners & Dialog::NorthEast && !(borders & FrameSvg::TopBorder))) {
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resizeAreas[Dialog::SouthEast] = QRect(r.right() - resizeAreaMargin,
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r.bottom() - resizeAreaMargin,
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resizeAreaMargin, resizeAreaMargin);
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}
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if (resizeCorners & Dialog::SouthWest ||
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(resizeCorners & Dialog::SouthEast && !(borders & FrameSvg::RightBorder)) ||
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(resizeCorners & Dialog::NorthWest && !(borders & FrameSvg::TopBorder))) {
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resizeAreas[Dialog::SouthWest] = QRect(0, r.bottom() - resizeAreaMargin,
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resizeAreaMargin, resizeAreaMargin);
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}
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}
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void Dialog::setGraphicsWidget(QGraphicsWidget *widget)
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{
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if (d->graphicsWidgetPtr) {
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d->graphicsWidgetPtr.data()->removeEventFilter(this);
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}
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d->graphicsWidgetPtr = 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);
|
|
lay->setSpacing(0);
|
|
}
|
|
|
|
d->themeChanged();
|
|
|
|
if (!d->view) {
|
|
d->view = new QGraphicsView(this);
|
|
d->view->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
|
|
d->view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
|
|
d->view->setFrameShape(QFrame::NoFrame);
|
|
d->view->viewport()->setAutoFillBackground(false);
|
|
layout()->addWidget(d->view);
|
|
}
|
|
|
|
d->view->setScene(widget->scene());
|
|
d->adjustView();
|
|
|
|
adjustSize();
|
|
|
|
widget->installEventFilter(this);
|
|
} else {
|
|
delete d->view;
|
|
d->view = 0;
|
|
}
|
|
}
|
|
|
|
//BIC FIXME: should be const
|
|
QGraphicsWidget *Dialog::graphicsWidget()
|
|
{
|
|
return d->graphicsWidgetPtr.data();
|
|
}
|
|
|
|
bool Dialog::eventFilter(QObject *watched, QEvent *event)
|
|
{
|
|
if (d->resizeStartCorner == Dialog::NoCorner && watched == d->graphicsWidgetPtr.data() &&
|
|
(event->type() == QEvent::GraphicsSceneResize || event->type() == QEvent::GraphicsSceneMove)) {
|
|
d->adjustViewTimer->start(150);
|
|
}
|
|
|
|
return QWidget::eventFilter(watched, event);
|
|
}
|
|
|
|
void Dialog::hideEvent(QHideEvent * event)
|
|
{
|
|
Q_UNUSED(event);
|
|
emit dialogVisible(false);
|
|
}
|
|
|
|
void Dialog::showEvent(QShowEvent * event)
|
|
{
|
|
Q_UNUSED(event);
|
|
|
|
//check if the widget size is still synced with the view
|
|
d->themeChanged();
|
|
d->updateResizeCorners();
|
|
|
|
QGraphicsWidget *graphicsWidget = d->graphicsWidgetPtr.data();
|
|
if (graphicsWidget && d->view && graphicsWidget->size().toSize() != d->view->size()) {
|
|
d->adjustView();
|
|
}
|
|
|
|
if (d->view) {
|
|
d->view->setFocus();
|
|
}
|
|
|
|
if (graphicsWidget) {
|
|
graphicsWidget->setFocus();
|
|
}
|
|
|
|
emit dialogVisible(true);
|
|
}
|
|
|
|
void Dialog::focusInEvent(QFocusEvent *event)
|
|
{
|
|
Q_UNUSED(event)
|
|
|
|
if (d->view) {
|
|
d->view->setFocus();
|
|
}
|
|
|
|
QGraphicsWidget *graphicsWidget = d->graphicsWidgetPtr.data();
|
|
if (graphicsWidget) {
|
|
graphicsWidget->setFocus();
|
|
}
|
|
}
|
|
|
|
void Dialog::moveEvent(QMoveEvent *event)
|
|
{
|
|
Q_UNUSED(event)
|
|
|
|
if (!d->moveTimer) {
|
|
d->moveTimer = new QTimer(this);
|
|
d->moveTimer->setSingleShot(true);
|
|
connect(d->moveTimer, SIGNAL(timeout()), this, SLOT(themeChanged()));
|
|
}
|
|
|
|
d->moveTimer->start(200);
|
|
}
|
|
|
|
void Dialog::setResizeHandleCorners(ResizeCorners corners)
|
|
{
|
|
if ((d->resizeCorners != corners) && (aspectRatioMode() != FixedSize)) {
|
|
d->resizeCorners = corners;
|
|
d->updateResizeCorners();
|
|
}
|
|
}
|
|
|
|
Dialog::ResizeCorners Dialog::resizeCorners() const
|
|
{
|
|
return d->resizeCorners;
|
|
}
|
|
|
|
void Dialog::animatedHide(Plasma::Direction direction)
|
|
{
|
|
if (!KWindowSystem::compositingActive()) {
|
|
hide();
|
|
return;
|
|
}
|
|
|
|
Location location = Desktop;
|
|
switch (direction) {
|
|
case Down:
|
|
location = BottomEdge;
|
|
break;
|
|
case Right:
|
|
location = RightEdge;
|
|
break;
|
|
case Left:
|
|
location = LeftEdge;
|
|
break;
|
|
case Up:
|
|
location = TopEdge;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
Plasma::WindowEffects::slideWindow(this, location);
|
|
hide();
|
|
}
|
|
|
|
void Dialog::animatedShow(Plasma::Direction direction)
|
|
{
|
|
if (!KWindowSystem::compositingActive()) {
|
|
show();
|
|
return;
|
|
}
|
|
|
|
//copied to not add new api
|
|
Location location = Desktop;
|
|
switch (direction) {
|
|
case Up:
|
|
location = BottomEdge;
|
|
break;
|
|
case Left:
|
|
location = RightEdge;
|
|
break;
|
|
case Right:
|
|
location = LeftEdge;
|
|
break;
|
|
case Down:
|
|
location = TopEdge;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (KWindowSystem::compositingActive()) {
|
|
Plasma::WindowEffects::slideWindow(this, location);
|
|
}
|
|
|
|
show();
|
|
}
|
|
|
|
bool Dialog::inControlArea(const QPoint &point)
|
|
{
|
|
foreach (const QRect &r, d->resizeAreas) {
|
|
if (r.contains(point)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
Plasma::AspectRatioMode Dialog::aspectRatioMode() const
|
|
{
|
|
return d->aspectRatioMode;
|
|
}
|
|
|
|
void Dialog::setAspectRatioMode(Plasma::AspectRatioMode mode)
|
|
{
|
|
if (mode == FixedSize) {
|
|
setResizeHandleCorners(NoCorner);
|
|
}
|
|
|
|
d->aspectRatioMode = mode;
|
|
}
|
|
|
|
}
|
|
#include "dialog.moc"
|