Add new example of moving top-level window with mouse drag.

6 files changed, 258 insertions, 0 deletions

diff --git a/dragmove/dragmove.pro b/dragmove/dragmove.pro
new file mode 100644
index 0000000..b614024
--- /dev/null
+++ b/dragmove/dragmove.pro
@@ -0,0 +1,6 @@
+TEMPLATE  = app
+TARGET    = dragmove
+HEADERS   = dragmovecharm.h
+SOURCES   = example.cpp dragmovecharm.cpp
+RESOURCES = dragmove.qrc
+QT        += network webkit
diff --git a/dragmove/dragmove.qrc b/dragmove/dragmove.qrc
new file mode 100644
index 0000000..a5e5f76
--- /dev/null
+++ b/dragmove/dragmove.qrc
@@ -0,0 +1,5 @@
+<RCC>
+    <qresource prefix="/" >
+        <file>pudding.jpg</file>
+    </qresource>
+</RCC>
diff --git a/dragmove/dragmovecharm.cpp b/dragmove/dragmovecharm.cpp
new file mode 100644
index 0000000..2dfff69
--- /dev/null
+++ b/dragmove/dragmovecharm.cpp
@@ -0,0 +1,115 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Graphics Dojo project on Qt Labs.
+**
+** This file may be used under the terms of the GNU General Public
+** License version 2.0 or 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 GNU
+** General Public Licensing requirements will be met:
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** 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.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+****************************************************************************/
+
+#include "dragmovecharm.h"
+
+#include <QEvent>
+#include <QHash>
+#include <QMouseEvent>
+#include <QWidget>
+
+struct DragMoveData {
+    bool isMoving;
+    QPoint startDrag;
+};
+
+class DragMoveCharmPrivate
+{
+public:
+    QHash<QWidget*, DragMoveData*> dragMoveData;
+};
+
+DragMoveCharm::DragMoveCharm(QObject *parent): QObject(parent)
+{
+    d = new DragMoveCharmPrivate;
+}
+
+DragMoveCharm::~DragMoveCharm()
+{
+    delete d;
+}
+
+void DragMoveCharm::activateOn(QWidget *widget)
+{
+    if (d->dragMoveData.contains(widget))
+        return;
+
+    DragMoveData *data = new DragMoveData;
+    data->startDrag = QPoint(0, 0);
+    data->isMoving = false;
+    d->dragMoveData[widget] = data;
+
+    widget->installEventFilter(this);
+}
+
+void DragMoveCharm::deactivateFrom(QWidget *widget)
+{
+    delete d->dragMoveData[widget];
+    d->dragMoveData.remove(widget);
+    widget->removeEventFilter(this);
+}
+
+bool DragMoveCharm::eventFilter(QObject *object, QEvent *event)
+{
+    QWidget *widget = qobject_cast<QWidget*>(object);
+    if (!widget)
+        return false;
+
+    QEvent::Type type = event->type();
+    if (type != QEvent::MouseButtonPress &&
+            type != QEvent::MouseButtonRelease &&
+            type != QEvent::MouseMove)
+        return false;
+
+    QMouseEvent *mouseEvent = dynamic_cast<QMouseEvent*>(event);
+    if (!mouseEvent || mouseEvent->modifiers() != Qt::NoModifier)
+        return false;
+    Qt::MouseButton button = mouseEvent->button();
+
+    DragMoveData *data = d->dragMoveData.value(widget);
+    if (!widget || !data)
+        return false;
+
+    bool consumed = false;
+
+    if (type == QEvent::MouseButtonPress && button == Qt::LeftButton) {
+        data->startDrag = mouseEvent->globalPos();
+        data->isMoving = true;
+        event->accept();
+        consumed = true;
+    }
+
+    if (type == QEvent::MouseButtonRelease) {
+        data->startDrag = QPoint(0, 0);
+        data->isMoving = false;
+    }
+
+    if (type == QEvent::MouseMove && data->isMoving) {
+        QPoint pos = mouseEvent->globalPos();
+        widget->move(widget->pos() + pos - data->startDrag);
+        data->startDrag = pos;
+        consumed = true;
+    }
+
+    return consumed;
+}
diff --git a/dragmove/dragmovecharm.h b/dragmove/dragmovecharm.h
new file mode 100644
index 0000000..35c378d
--- /dev/null
+++ b/dragmove/dragmovecharm.h
@@ -0,0 +1,46 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Graphics Dojo project on Qt Labs.
+**
+** This file may be used under the terms of the GNU General Public
+** License version 2.0 or 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 GNU
+** General Public Licensing requirements will be met:
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** 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.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+****************************************************************************/
+
+#ifndef DRAGMOVECHARM_H
+#define DRAGMOVECHARM_H
+
+#include <QObject>
+
+class DragMoveCharmPrivate;
+class QWidget;
+
+class DragMoveCharm: public QObject
+{
+    Q_OBJECT
+public:
+    DragMoveCharm(QObject *parent = 0);
+    ~DragMoveCharm();
+    void activateOn(QWidget *widget);
+    void deactivateFrom(QWidget *widget);
+    bool eventFilter(QObject *object, QEvent *event);
+
+private:
+    DragMoveCharmPrivate *d;
+};
+
+#endif // DRAGMOVECHARM_H
diff --git a/dragmove/example.cpp b/dragmove/example.cpp
new file mode 100644
index 0000000..9f45777
--- /dev/null
+++ b/dragmove/example.cpp
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Graphics Dojo project on Qt Labs.
+**
+** This file may be used under the terms of the GNU General Public
+** License version 2.0 or 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 GNU
+** General Public Licensing requirements will be met:
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** 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.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+****************************************************************************/
+
+#include <QtGui>
+#include <QtWebKit>
+
+#include "dragmovecharm.h"
+
+QWidget *imageShow()
+{
+    QLabel *label = new QLabel;
+    label->setText("<img src=':/pudding.jpg'>");
+    label->adjustSize();
+    label->setWindowTitle("Drag to move around");
+    label->show();
+
+    return label;
+}
+
+QWidget *miniBrowser()
+{
+    QDialog *widget = new QDialog;
+    QVBoxLayout *layout = new QVBoxLayout(widget);
+    layout->setContentsMargins(3, 15, 3, 3);
+    widget->setLayout(layout);
+    widget->setWindowFlags(Qt::FramelessWindowHint);
+    widget->setSizeGripEnabled(true);
+    widget->setWindowTitle("Drag to move around");
+    widget->show();
+
+    QTabWidget *tab = new QTabWidget(widget);
+    QWebView *search = new QWebView(tab);
+    search->load(QUrl("http://www.google.com/m?hl=en"));
+    tab->addTab(search, "Search");
+    QWebView *news = new QWebView(tab);
+    news->load(QUrl("http://www.google.com/m/news?source=mobileproducts"));
+    tab->addTab(news, "News");
+    QWebView *bbc = new QWebView(tab);
+    bbc->load(QUrl("http://news.bbc.co.uk/text_only.stm"));
+    tab->addTab(bbc, "BBC");
+    QWebView *fb = new QWebView(tab);
+    fb->load(QUrl("http://iphone.facebook.com"));
+    tab->addTab(fb, "Facebook");
+
+    layout->addWidget(tab);
+    widget->resize(350, 500);
+    search->setFocus();
+
+#if QT_VERSION >= 0x040500
+    tab->setDocumentMode(true);
+#endif
+
+    return widget;
+}
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    DragMoveCharm charm;
+    charm.activateOn(imageShow());
+    charm.activateOn(miniBrowser());
+
+    return app.exec();
+}
+
diff --git a/dragmove/pudding.jpg b/dragmove/pudding.jpg
new file mode 100644
index 0000000..dc162d8
--- /dev/null
+++ b/dragmove/pudding.jpg