Long live Qt!

1 files changed, 535 insertions, 0 deletions

diff --git a/src/gui/embedded/qwsmanager_qws.cpp b/src/gui/embedded/qwsmanager_qws.cpp
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+++ b/src/gui/embedded/qwsmanager_qws.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwsmanager_qws.h"
+
+#ifndef QT_NO_QWS_MANAGER
+
+#include "qdrawutil.h"
+#include "qapplication.h"
+#include "qstyle.h"
+#include "qwidget.h"
+#include "qmenu.h"
+#include "qpainter.h"
+#include "private/qpainter_p.h"
+#include "qregion.h"
+#include "qevent.h"
+#include "qcursor.h"
+#include "qwsdisplay_qws.h"
+#include "qdesktopwidget.h"
+
+#include <private/qapplication_p.h>
+#include <private/qwidget_p.h>
+#include <private/qbackingstore_p.h>
+#include <private/qwindowsurface_qws_p.h>
+#include "qdecorationfactory_qws.h"
+
+#include "qlayout.h"
+
+#include "qwsmanager_p.h"
+
+#include <qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+QWidget *QWSManagerPrivate::active = 0;
+QPoint QWSManagerPrivate::mousePos;
+
+
+QWSManagerPrivate::QWSManagerPrivate()
+    : QObjectPrivate(), activeRegion(QDecoration::None), managed(0), popup(0),
+      previousRegionType(0), previousRegionRepainted(false), entireDecorationNeedsRepaint(false)
+{
+    cached_region.regionType = 0;
+}
+
+QRegion &QWSManager::cachedRegion()
+{
+    return d_func()->cached_region.region;
+}
+
+/*!
+    \class QWSManager
+    \ingroup qws
+    \internal
+*/
+
+/*!
+
+*/
+QWSManager::QWSManager(QWidget *w)
+    : QObject(*new QWSManagerPrivate, (QObject*)0)
+{
+    d_func()->managed = w;
+
+}
+
+QWSManager::~QWSManager()
+{
+    Q_D(QWSManager);
+#ifndef QT_NO_MENU
+    if (d->popup)
+        delete d->popup;
+#endif
+    if (d->managed == QWSManagerPrivate::active)
+        QWSManagerPrivate::active = 0;
+}
+
+QWidget *QWSManager::widget()
+{
+    Q_D(QWSManager);
+    return d->managed;
+}
+
+QWidget *QWSManager::grabbedMouse()
+{
+    return QWSManagerPrivate::active;
+}
+
+QRegion QWSManager::region()
+{
+    Q_D(QWSManager);
+    return QApplication::qwsDecoration().region(d->managed, d->managed->geometry());
+}
+
+bool QWSManager::event(QEvent *e)
+{
+    if (QObject::event(e))
+        return true;
+
+    switch (e->type()) {
+        case QEvent::MouseMove:
+            mouseMoveEvent((QMouseEvent*)e);
+            break;
+
+        case QEvent::MouseButtonPress:
+            mousePressEvent((QMouseEvent*)e);
+            break;
+
+        case QEvent::MouseButtonRelease:
+            mouseReleaseEvent((QMouseEvent*)e);
+            break;
+
+        case QEvent::MouseButtonDblClick:
+            mouseDoubleClickEvent((QMouseEvent*)e);
+            break;
+
+        case QEvent::Paint:
+            paintEvent((QPaintEvent*)e);
+            break;
+
+        default:
+            return false;
+            break;
+    }
+
+    return true;
+}
+
+void QWSManager::mousePressEvent(QMouseEvent *e)
+{
+    Q_D(QWSManager);
+    d->mousePos = e->globalPos();
+    d->activeRegion = QApplication::qwsDecoration().regionAt(d->managed, d->mousePos);
+    if(d->cached_region.regionType)
+        d->previousRegionRepainted |= repaintRegion(d->cached_region.regionType, QDecoration::Pressed);
+
+    if (d->activeRegion == QDecoration::Menu) {
+        QPoint pos = (QApplication::layoutDirection() == Qt::LeftToRight
+                      ? d->managed->geometry().topLeft()
+                      : d->managed->geometry().topRight());
+        menu(pos);
+    }
+    if (d->activeRegion != QDecoration::None &&
+         d->activeRegion != QDecoration::Menu) {
+        d->active = d->managed;
+        d->managed->grabMouse();
+    }
+    if (d->activeRegion != QDecoration::None &&
+         d->activeRegion != QDecoration::Close &&
+         d->activeRegion != QDecoration::Minimize &&
+         d->activeRegion != QDecoration::Menu) {
+        d->managed->raise();
+    }
+
+    if (e->button() == Qt::RightButton) {
+        menu(e->globalPos());
+    }
+}
+
+void QWSManager::mouseReleaseEvent(QMouseEvent *e)
+{
+    Q_D(QWSManager);
+    d->managed->releaseMouse();
+    if (d->cached_region.regionType && d->previousRegionRepainted && QApplication::mouseButtons() == 0) {
+        bool doesHover = repaintRegion(d->cached_region.regionType, QDecoration::Hover);
+        if (!doesHover) {
+            repaintRegion(d->cached_region.regionType, QDecoration::Normal);
+            d->previousRegionRepainted = false;
+        }
+    }
+
+    if (e->button() == Qt::LeftButton) {
+        //handleMove();
+        int itm = QApplication::qwsDecoration().regionAt(d->managed, e->globalPos());
+        int activatedItem = d->activeRegion;
+        d->activeRegion = QDecoration::None;
+        d->active = 0;
+        if (activatedItem == itm)
+            QApplication::qwsDecoration().regionClicked(d->managed, itm);
+    } else if (d->activeRegion == QDecoration::None) {
+        d->active = 0;
+    }
+}
+
+void QWSManager::mouseDoubleClickEvent(QMouseEvent *e)
+{
+    Q_D(QWSManager);
+    if (e->button() == Qt::LeftButton)
+        QApplication::qwsDecoration().regionDoubleClicked(d->managed,
+            QApplication::qwsDecoration().regionAt(d->managed, e->globalPos()));
+}
+
+static inline Qt::CursorShape regionToShape(int region)
+{
+    if (region == QDecoration::None)
+        return Qt::ArrowCursor;
+
+    static const struct {
+        int region;
+        Qt::CursorShape shape;
+    } r2s[] = {
+        { QDecoration::TopLeft,     Qt::SizeFDiagCursor },
+        { QDecoration::Top,         Qt::SizeVerCursor},
+        { QDecoration::TopRight,    Qt::SizeBDiagCursor},
+        { QDecoration::Left,        Qt::SizeHorCursor},
+        { QDecoration::Right,       Qt::SizeHorCursor},
+        { QDecoration::BottomLeft,  Qt::SizeBDiagCursor},
+        { QDecoration::Bottom,      Qt::SizeVerCursor},
+        { QDecoration::BottomRight, Qt::SizeFDiagCursor},
+        { QDecoration::None,        Qt::ArrowCursor}
+    };
+
+    int i = 0;
+    while (region != r2s[i].region && r2s[i].region)
+        ++i;
+    return r2s[i].shape;
+}
+
+void QWSManager::mouseMoveEvent(QMouseEvent *e)
+{
+    Q_D(QWSManager);
+    if (d->newCachedRegion(e->globalPos())) {
+        if(d->previousRegionType && d->previousRegionRepainted)
+            repaintRegion(d->previousRegionType, QDecoration::Normal);
+        if(d->cached_region.regionType) {
+            d->previousRegionRepainted = repaintRegion(d->cached_region.regionType, QDecoration::Hover);
+        }
+    }
+
+
+#ifndef QT_NO_CURSOR
+    QWSDisplay *qwsd = QApplication::desktop()->qwsDisplay();
+    qwsd->selectCursor(d->managed, regionToShape(d->cachedRegionAt()));
+#endif //QT_NO_CURSOR
+
+    if (d->activeRegion)
+        handleMove(e->globalPos());
+}
+
+void QWSManager::handleMove(QPoint g)
+{
+    Q_D(QWSManager);
+
+    // don't allow dragging to where the user probably cannot click!
+    QApplicationPrivate *ap = QApplicationPrivate::instance();
+    const QRect maxWindowRect = ap->maxWindowRect(qt_screen);
+    if (maxWindowRect.isValid()) {
+        if (g.x() < maxWindowRect.x())
+            g.setX(maxWindowRect.x());
+        if (g.y() < maxWindowRect.y())
+            g.setY(maxWindowRect.y());
+        if (g.x() > maxWindowRect.right())
+            g.setX(maxWindowRect.right());
+        if (g.y() > maxWindowRect.bottom())
+            g.setY(maxWindowRect.bottom());
+    }
+
+    if (g == d->mousePos)
+        return;
+
+    if ( d->managed->isMaximized() )
+        return;
+
+    int x = d->managed->geometry().x();
+    int y = d->managed->geometry().y();
+    int w = d->managed->width();
+    int h = d->managed->height();
+
+    QRect geom(d->managed->geometry());
+
+    QPoint delta = g - d->mousePos;
+    d->mousePos = g;
+
+    if (d->activeRegion == QDecoration::Title) {
+        geom = QRect(x + delta.x(), y + delta.y(), w, h);
+    } else {
+        bool keepTop = true;
+        bool keepLeft = true;
+        switch (d->activeRegion) {
+        case QDecoration::Top:
+            geom.setTop(geom.top() + delta.y());
+            keepTop = false;
+            break;
+        case QDecoration::Bottom:
+            geom.setBottom(geom.bottom() + delta.y());
+            keepTop = true;
+            break;
+        case QDecoration::Left:
+            geom.setLeft(geom.left() + delta.x());
+            keepLeft = false;
+            break;
+        case QDecoration::Right:
+            geom.setRight(geom.right() + delta.x());
+            keepLeft = true;
+            break;
+        case QDecoration::TopRight:
+            geom.setTopRight(geom.topRight() + delta);
+            keepLeft = true;
+            keepTop = false;
+            break;
+        case QDecoration::TopLeft:
+            geom.setTopLeft(geom.topLeft() + delta);
+            keepLeft = false;
+            keepTop = false;
+            break;
+        case QDecoration::BottomLeft:
+            geom.setBottomLeft(geom.bottomLeft() + delta);
+            keepLeft = false;
+            keepTop = true;
+            break;
+        case QDecoration::BottomRight:
+            geom.setBottomRight(geom.bottomRight() + delta);
+            keepLeft = true;
+            keepTop = true;
+            break;
+        default:
+            return;
+        }
+
+        QSize newSize = QLayout::closestAcceptableSize(d->managed, geom.size());
+
+        int dx = newSize.width() - geom.width();
+        int dy = newSize.height() - geom.height();
+
+        if (keepTop) {
+            geom.setBottom(geom.bottom() + dy);
+            d->mousePos.ry() += dy;
+        } else {
+            geom.setTop(geom.top() - dy);
+            d->mousePos.ry() -= dy;
+        }
+        if (keepLeft) {
+            geom.setRight(geom.right() + dx);
+            d->mousePos.rx() += dx;
+        } else {
+            geom.setLeft(geom.left() - dx);
+            d->mousePos.rx() -= dx;
+        }
+    }
+    if (geom != d->managed->geometry()) {
+        QApplication::sendPostedEvents();
+        d->managed->setGeometry(geom);
+    }
+}
+
+void QWSManager::paintEvent(QPaintEvent *)
+{
+     Q_D(QWSManager);
+     d->dirtyRegion(QDecoration::All, QDecoration::Normal);
+}
+
+void QWSManagerPrivate::dirtyRegion(int decorationRegion,
+                                    QDecoration::DecorationState state,
+                                    const QRegion &clip)
+{
+    QTLWExtra *topextra = managed->d_func()->extra->topextra;
+    QWidgetBackingStore *bs = topextra->backingStore;
+    const bool pendingUpdateRequest = bs->isDirty();
+
+    if (decorationRegion == QDecoration::All) {
+        if (clip.isEmpty())
+            entireDecorationNeedsRepaint = true;
+        dirtyRegions.clear();
+        dirtyStates.clear();
+    }
+    int i = dirtyRegions.indexOf(decorationRegion);
+    if (i >= 0) {
+        dirtyRegions.removeAt(i);
+        dirtyStates.removeAt(i);
+    }
+
+    dirtyRegions.append(decorationRegion);
+    dirtyStates.append(state);
+    if (!entireDecorationNeedsRepaint)
+        dirtyClip += clip;
+
+    if (!pendingUpdateRequest)
+        QApplication::postEvent(managed, new QEvent(QEvent::UpdateRequest), Qt::LowEventPriority);
+}
+
+void QWSManagerPrivate::clearDirtyRegions()
+{
+    dirtyRegions.clear();
+    dirtyStates.clear();
+    dirtyClip = QRegion();
+    entireDecorationNeedsRepaint = false;
+}
+
+bool QWSManager::repaintRegion(int decorationRegion, QDecoration::DecorationState state)
+{
+    Q_D(QWSManager);
+
+    d->dirtyRegion(decorationRegion, state);
+    return true;
+}
+
+void QWSManager::menu(const QPoint &pos)
+{
+#ifdef QT_NO_MENU
+    Q_UNUSED(pos);
+#else
+    Q_D(QWSManager);
+    if (d->popup)
+        delete d->popup;
+
+    // Basic window operation menu
+    d->popup = new QMenu();
+    QApplication::qwsDecoration().buildSysMenu(d->managed, d->popup);
+    connect(d->popup, SIGNAL(triggered(QAction*)), SLOT(menuTriggered(QAction*)));
+
+    d->popup->popup(pos);
+    d->activeRegion = QDecoration::None;
+#endif // QT_NO_MENU
+}
+
+void QWSManager::menuTriggered(QAction *action)
+{
+#ifdef QT_NO_MENU
+    Q_UNUSED(action);
+#else
+    Q_D(QWSManager);
+    QApplication::qwsDecoration().menuTriggered(d->managed, action);
+    d->popup->deleteLater();
+    d->popup = 0;
+#endif
+}
+
+void QWSManager::startMove()
+{
+    Q_D(QWSManager);
+    d->mousePos = QCursor::pos();
+    d->activeRegion = QDecoration::Title;
+    d->active = d->managed;
+    d->managed->grabMouse();
+}
+
+void QWSManager::startResize()
+{
+    Q_D(QWSManager);
+    d->activeRegion = QDecoration::BottomRight;
+    d->active = d->managed;
+    d->managed->grabMouse();
+}
+
+void QWSManager::maximize()
+{
+    Q_D(QWSManager);
+    // find out how much space the decoration needs
+    const int screen = QApplication::desktop()->screenNumber(d->managed);
+    const QRect desk = QApplication::desktop()->availableGeometry(screen);
+    QRect dummy(0, 0, 1, 1);
+    QRect nr;
+    QRegion r = QApplication::qwsDecoration().region(d->managed, dummy);
+    if (r.isEmpty()) {
+        nr = desk;
+    } else {
+        r += dummy; // make sure we get the full window region in case of 0 width borders
+        QRect rect = r.boundingRect();
+        nr = QRect(desk.x()-rect.x(), desk.y()-rect.y(),
+                desk.width() - (rect.width()==1 ? 0 : rect.width()-1), // ==1 -> dummy
+                desk.height() - (rect.height()==1 ? 0 : rect.height()-1));
+    }
+    d->managed->setGeometry(nr);
+}
+
+bool QWSManagerPrivate::newCachedRegion(const QPoint &pos)
+{
+    // Check if anything has changed that would affect the region caching
+    if (managed->windowFlags() == cached_region.windowFlags
+        && managed->geometry() == cached_region.windowGeometry
+        && cached_region.region.contains(pos))
+        return false;
+
+    // Update the cached region
+    int reg = QApplication::qwsDecoration().regionAt(managed, pos);
+    if (QWidget::mouseGrabber())
+        reg = QDecoration::None;
+
+    previousRegionType = cached_region.regionType;
+    cached_region.regionType = reg;
+    cached_region.region = QApplication::qwsDecoration().region(managed, managed->geometry(),
+                                                                reg);
+    // Make room for borders around the widget, even if the decoration doesn't have a frame.
+    if (reg && !(reg & int(QDecoration::Borders))) {
+        cached_region.region -= QApplication::qwsDecoration().region(managed, managed->geometry(), QDecoration::Borders);
+    }
+    cached_region.windowFlags = managed->windowFlags();
+    cached_region.windowGeometry = managed->geometry();
+//    QRect rec = cached_region.region.boundingRect();
+//    qDebug("Updated cached region: 0x%04x (%d, %d)  (%d, %d,  %d, %d)",
+//           reg, pos.x(), pos.y(), rec.x(), rec.y(), rec.right(), rec.bottom());
+    return true;
+}
+
+QT_END_NAMESPACE
+
+#endif //QT_NO_QWS_MANAGER