source: branches/4.5.1/demos/mainwindow/mainwindow.cpp@ 584

Last change on this file since 584 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 16.3 KB
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1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information (qt-info@nokia.com)
5**
6** This file is part of the demonstration applications of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial Usage
10** Licensees holding valid Qt Commercial licenses may use this file in
11** accordance with the Qt Commercial License Agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Nokia.
14**
15** GNU Lesser General Public License Usage
16** Alternatively, this file may be used under the terms of the GNU Lesser
17** General Public License version 2.1 as published by the Free Software
18** Foundation and appearing in the file LICENSE.LGPL included in the
19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
21** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22**
23** In addition, as a special exception, Nokia gives you certain
24** additional rights. These rights are described in the Nokia Qt LGPL
25** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26** package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you are unsure which license is appropriate for your use, please
37** contact the sales department at qt-sales@nokia.com.
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "mainwindow.h"
43#include "colorswatch.h"
44#include "toolbar.h"
45
46#include <QAction>
47#include <QLayout>
48#include <QMenu>
49#include <QMenuBar>
50#include <QStatusBar>
51#include <QTextEdit>
52#include <QFile>
53#include <QDataStream>
54#include <QFileDialog>
55#include <QMessageBox>
56#include <QSignalMapper>
57#include <QApplication>
58#include <QPainter>
59#include <QMouseEvent>
60#include <QLineEdit>
61#include <QComboBox>
62#include <QLabel>
63#include <QPushButton>
64#include <qdebug.h>
65
66static const char * const message =
67 "<p><b>Qt Main Window Demo</b></p>"
68
69 "<p>This is a demonstration of the QMainWindow, QToolBar and "
70 "QDockWidget classes.</p>"
71
72 "<p>The tool bar and dock widgets can be dragged around and rearranged "
73 "using the mouse or via the menu.</p>"
74
75 "<p>Each dock widget contains a colored frame and a context "
76 "(right-click) menu.</p>"
77
78#ifdef Q_WS_MAC
79 "<p>On Mac OS X, the \"Black\" dock widget has been created as a "
80 "<em>Drawer</em>, which is a special kind of QDockWidget.</p>"
81#endif
82 ;
83
84MainWindow::MainWindow(const QMap<QString, QSize> &customSizeHints,
85 QWidget *parent, Qt::WindowFlags flags)
86 : QMainWindow(parent, flags)
87{
88 setObjectName("MainWindow");
89 setWindowTitle("Qt Main Window Demo");
90
91 center = new QTextEdit(this);
92 center->setReadOnly(true);
93 center->setMinimumSize(400, 205);
94 setCentralWidget(center);
95
96 setupToolBar();
97 setupMenuBar();
98 setupDockWidgets(customSizeHints);
99
100 statusBar()->showMessage(tr("Status Bar"));
101}
102
103void MainWindow::actionTriggered(QAction *action)
104{
105 qDebug("action '%s' triggered", action->text().toLocal8Bit().data());
106}
107
108void MainWindow::setupToolBar()
109{
110 for (int i = 0; i < 3; ++i) {
111 ToolBar *tb = new ToolBar(QString::fromLatin1("Tool Bar %1").arg(i + 1), this);
112 toolBars.append(tb);
113 addToolBar(tb);
114 }
115}
116
117void MainWindow::setupMenuBar()
118{
119 QMenu *menu = menuBar()->addMenu(tr("&File"));
120
121 QAction *action = menu->addAction(tr("Save layout..."));
122 connect(action, SIGNAL(triggered()), this, SLOT(saveLayout()));
123
124 action = menu->addAction(tr("Load layout..."));
125 connect(action, SIGNAL(triggered()), this, SLOT(loadLayout()));
126
127 action = menu->addAction(tr("Switch layout direction"));
128 connect(action, SIGNAL(triggered()), this, SLOT(switchLayoutDirection()));
129
130 menu->addSeparator();
131
132 menu->addAction(tr("&Quit"), this, SLOT(close()));
133
134 mainWindowMenu = menuBar()->addMenu(tr("Main window"));
135
136 action = mainWindowMenu->addAction(tr("Animated docks"));
137 action->setCheckable(true);
138 action->setChecked(dockOptions() & AnimatedDocks);
139 connect(action, SIGNAL(toggled(bool)), this, SLOT(setDockOptions()));
140
141 action = mainWindowMenu->addAction(tr("Allow nested docks"));
142 action->setCheckable(true);
143 action->setChecked(dockOptions() & AllowNestedDocks);
144 connect(action, SIGNAL(toggled(bool)), this, SLOT(setDockOptions()));
145
146 action = mainWindowMenu->addAction(tr("Allow tabbed docks"));
147 action->setCheckable(true);
148 action->setChecked(dockOptions() & AllowTabbedDocks);
149 connect(action, SIGNAL(toggled(bool)), this, SLOT(setDockOptions()));
150
151 action = mainWindowMenu->addAction(tr("Force tabbed docks"));
152 action->setCheckable(true);
153 action->setChecked(dockOptions() & ForceTabbedDocks);
154 connect(action, SIGNAL(toggled(bool)), this, SLOT(setDockOptions()));
155
156 action = mainWindowMenu->addAction(tr("Vertical tabs"));
157 action->setCheckable(true);
158 action->setChecked(dockOptions() & VerticalTabs);
159 connect(action, SIGNAL(toggled(bool)), this, SLOT(setDockOptions()));
160
161 QMenu *toolBarMenu = menuBar()->addMenu(tr("Tool bars"));
162 for (int i = 0; i < toolBars.count(); ++i)
163 toolBarMenu->addMenu(toolBars.at(i)->menu);
164
165 dockWidgetMenu = menuBar()->addMenu(tr("&Dock Widgets"));
166}
167
168void MainWindow::setDockOptions()
169{
170 DockOptions opts;
171 QList<QAction*> actions = mainWindowMenu->actions();
172
173 if (actions.at(0)->isChecked())
174 opts |= AnimatedDocks;
175 if (actions.at(1)->isChecked())
176 opts |= AllowNestedDocks;
177 if (actions.at(2)->isChecked())
178 opts |= AllowTabbedDocks;
179 if (actions.at(3)->isChecked())
180 opts |= ForceTabbedDocks;
181 if (actions.at(4)->isChecked())
182 opts |= VerticalTabs;
183
184 QMainWindow::setDockOptions(opts);
185}
186
187void MainWindow::saveLayout()
188{
189 QString fileName
190 = QFileDialog::getSaveFileName(this, tr("Save layout"));
191 if (fileName.isEmpty())
192 return;
193 QFile file(fileName);
194 if (!file.open(QFile::WriteOnly)) {
195 QString msg = tr("Failed to open %1\n%2")
196 .arg(fileName)
197 .arg(file.errorString());
198 QMessageBox::warning(this, tr("Error"), msg);
199 return;
200 }
201
202 QByteArray geo_data = saveGeometry();
203 QByteArray layout_data = saveState();
204
205 bool ok = file.putChar((uchar)geo_data.size());
206 if (ok)
207 ok = file.write(geo_data) == geo_data.size();
208 if (ok)
209 ok = file.write(layout_data) == layout_data.size();
210
211 if (!ok) {
212 QString msg = tr("Error writing to %1\n%2")
213 .arg(fileName)
214 .arg(file.errorString());
215 QMessageBox::warning(this, tr("Error"), msg);
216 return;
217 }
218}
219
220void MainWindow::loadLayout()
221{
222 QString fileName
223 = QFileDialog::getOpenFileName(this, tr("Load layout"));
224 if (fileName.isEmpty())
225 return;
226 QFile file(fileName);
227 if (!file.open(QFile::ReadOnly)) {
228 QString msg = tr("Failed to open %1\n%2")
229 .arg(fileName)
230 .arg(file.errorString());
231 QMessageBox::warning(this, tr("Error"), msg);
232 return;
233 }
234
235 uchar geo_size;
236 QByteArray geo_data;
237 QByteArray layout_data;
238
239 bool ok = file.getChar((char*)&geo_size);
240 if (ok) {
241 geo_data = file.read(geo_size);
242 ok = geo_data.size() == geo_size;
243 }
244 if (ok) {
245 layout_data = file.readAll();
246 ok = layout_data.size() > 0;
247 }
248
249 if (ok)
250 ok = restoreGeometry(geo_data);
251 if (ok)
252 ok = restoreState(layout_data);
253
254 if (!ok) {
255 QString msg = tr("Error reading %1")
256 .arg(fileName);
257 QMessageBox::warning(this, tr("Error"), msg);
258 return;
259 }
260}
261
262QAction *addAction(QMenu *menu, const QString &text, QActionGroup *group, QSignalMapper *mapper,
263 int id)
264{
265 bool first = group->actions().isEmpty();
266 QAction *result = menu->addAction(text);
267 result->setCheckable(true);
268 result->setChecked(first);
269 group->addAction(result);
270 QObject::connect(result, SIGNAL(triggered()), mapper, SLOT(map()));
271 mapper->setMapping(result, id);
272 return result;
273}
274
275void MainWindow::setupDockWidgets(const QMap<QString, QSize> &customSizeHints)
276{
277 mapper = new QSignalMapper(this);
278 connect(mapper, SIGNAL(mapped(int)), this, SLOT(setCorner(int)));
279
280 QMenu *corner_menu = dockWidgetMenu->addMenu(tr("Top left corner"));
281 QActionGroup *group = new QActionGroup(this);
282 group->setExclusive(true);
283 ::addAction(corner_menu, tr("Top dock area"), group, mapper, 0);
284 ::addAction(corner_menu, tr("Left dock area"), group, mapper, 1);
285
286 corner_menu = dockWidgetMenu->addMenu(tr("Top right corner"));
287 group = new QActionGroup(this);
288 group->setExclusive(true);
289 ::addAction(corner_menu, tr("Top dock area"), group, mapper, 2);
290 ::addAction(corner_menu, tr("Right dock area"), group, mapper, 3);
291
292 corner_menu = dockWidgetMenu->addMenu(tr("Bottom left corner"));
293 group = new QActionGroup(this);
294 group->setExclusive(true);
295 ::addAction(corner_menu, tr("Bottom dock area"), group, mapper, 4);
296 ::addAction(corner_menu, tr("Left dock area"), group, mapper, 5);
297
298 corner_menu = dockWidgetMenu->addMenu(tr("Bottom right corner"));
299 group = new QActionGroup(this);
300 group->setExclusive(true);
301 ::addAction(corner_menu, tr("Bottom dock area"), group, mapper, 6);
302 ::addAction(corner_menu, tr("Right dock area"), group, mapper, 7);
303
304 dockWidgetMenu->addSeparator();
305
306 static const struct Set {
307 const char * name;
308 uint flags;
309 Qt::DockWidgetArea area;
310 } sets [] = {
311#ifndef Q_WS_MAC
312 { "Black", 0, Qt::LeftDockWidgetArea },
313#else
314 { "Black", Qt::Drawer, Qt::LeftDockWidgetArea },
315#endif
316 { "White", 0, Qt::RightDockWidgetArea },
317 { "Red", 0, Qt::TopDockWidgetArea },
318 { "Green", 0, Qt::TopDockWidgetArea },
319 { "Blue", 0, Qt::BottomDockWidgetArea },
320 { "Yellow", 0, Qt::BottomDockWidgetArea }
321 };
322 const int setCount = sizeof(sets) / sizeof(Set);
323
324 for (int i = 0; i < setCount; ++i) {
325 ColorSwatch *swatch = new ColorSwatch(tr(sets[i].name), this, Qt::WindowFlags(sets[i].flags));
326 if (i%2)
327 swatch->setWindowIcon(QIcon(QPixmap(":/res/qt.png")));
328 if (qstrcmp(sets[i].name, "Blue") == 0) {
329 BlueTitleBar *titlebar = new BlueTitleBar(swatch);
330 swatch->setTitleBarWidget(titlebar);
331 connect(swatch, SIGNAL(topLevelChanged(bool)), titlebar, SLOT(updateMask()));
332 connect(swatch, SIGNAL(featuresChanged(QDockWidget::DockWidgetFeatures)), titlebar, SLOT(updateMask()));
333
334#ifdef Q_WS_QWS
335 QPalette pal = palette();
336 pal.setBrush(backgroundRole(), QColor(0,0,0,0));
337 swatch->setPalette(pal);
338#endif
339 }
340
341 QString name = QString::fromLatin1(sets[i].name);
342 if (customSizeHints.contains(name))
343 swatch->setCustomSizeHint(customSizeHints.value(name));
344
345 addDockWidget(sets[i].area, swatch);
346 dockWidgetMenu->addMenu(swatch->menu);
347 }
348
349 createDockWidgetAction = new QAction(tr("Add dock widget..."), this);
350 connect(createDockWidgetAction, SIGNAL(triggered()), this, SLOT(createDockWidget()));
351 destroyDockWidgetMenu = new QMenu(tr("Destroy dock widget"), this);
352 destroyDockWidgetMenu->setEnabled(false);
353 connect(destroyDockWidgetMenu, SIGNAL(triggered(QAction*)), this, SLOT(destroyDockWidget(QAction*)));
354
355 dockWidgetMenu->addSeparator();
356 dockWidgetMenu->addAction(createDockWidgetAction);
357 dockWidgetMenu->addMenu(destroyDockWidgetMenu);
358}
359
360void MainWindow::setCorner(int id)
361{
362 switch (id) {
363 case 0:
364 QMainWindow::setCorner(Qt::TopLeftCorner, Qt::TopDockWidgetArea);
365 break;
366 case 1:
367 QMainWindow::setCorner(Qt::TopLeftCorner, Qt::LeftDockWidgetArea);
368 break;
369 case 2:
370 QMainWindow::setCorner(Qt::TopRightCorner, Qt::TopDockWidgetArea);
371 break;
372 case 3:
373 QMainWindow::setCorner(Qt::TopRightCorner, Qt::RightDockWidgetArea);
374 break;
375 case 4:
376 QMainWindow::setCorner(Qt::BottomLeftCorner, Qt::BottomDockWidgetArea);
377 break;
378 case 5:
379 QMainWindow::setCorner(Qt::BottomLeftCorner, Qt::LeftDockWidgetArea);
380 break;
381 case 6:
382 QMainWindow::setCorner(Qt::BottomRightCorner, Qt::BottomDockWidgetArea);
383 break;
384 case 7:
385 QMainWindow::setCorner(Qt::BottomRightCorner, Qt::RightDockWidgetArea);
386 break;
387 }
388}
389
390void MainWindow::showEvent(QShowEvent *event)
391{
392 QMainWindow::showEvent(event);
393}
394
395void MainWindow::switchLayoutDirection()
396{
397 if (layoutDirection() == Qt::LeftToRight)
398 qApp->setLayoutDirection(Qt::RightToLeft);
399 else
400 qApp->setLayoutDirection(Qt::LeftToRight);
401}
402
403class CreateDockWidgetDialog : public QDialog
404{
405public:
406 CreateDockWidgetDialog(QWidget *parent = 0);
407
408 QString objectName() const;
409 Qt::DockWidgetArea location() const;
410
411private:
412 QLineEdit *m_objectName;
413 QComboBox *m_location;
414};
415
416CreateDockWidgetDialog::CreateDockWidgetDialog(QWidget *parent)
417 : QDialog(parent)
418{
419 QGridLayout *layout = new QGridLayout(this);
420
421 layout->addWidget(new QLabel(tr("Object name:")), 0, 0);
422 m_objectName = new QLineEdit;
423 layout->addWidget(m_objectName, 0, 1);
424
425 layout->addWidget(new QLabel(tr("Location:")), 1, 0);
426 m_location = new QComboBox;
427 m_location->setEditable(false);
428 m_location->addItem(tr("Top"));
429 m_location->addItem(tr("Left"));
430 m_location->addItem(tr("Right"));
431 m_location->addItem(tr("Bottom"));
432 m_location->addItem(tr("Restore"));
433 layout->addWidget(m_location, 1, 1);
434
435 QHBoxLayout *buttonLayout = new QHBoxLayout;
436 layout->addLayout(buttonLayout, 2, 0, 1, 2);
437 buttonLayout->addStretch();
438
439 QPushButton *cancelButton = new QPushButton(tr("Cancel"));
440 connect(cancelButton, SIGNAL(clicked()), this, SLOT(reject()));
441 buttonLayout->addWidget(cancelButton);
442 QPushButton *okButton = new QPushButton(tr("Ok"));
443 connect(okButton, SIGNAL(clicked()), this, SLOT(accept()));
444 buttonLayout->addWidget(okButton);
445
446 okButton->setDefault(true);
447}
448
449QString CreateDockWidgetDialog::objectName() const
450{
451 return m_objectName->text();
452}
453
454Qt::DockWidgetArea CreateDockWidgetDialog::location() const
455{
456 switch (m_location->currentIndex()) {
457 case 0: return Qt::TopDockWidgetArea;
458 case 1: return Qt::LeftDockWidgetArea;
459 case 2: return Qt::RightDockWidgetArea;
460 case 3: return Qt::BottomDockWidgetArea;
461 default:
462 break;
463 }
464 return Qt::NoDockWidgetArea;
465}
466
467void MainWindow::createDockWidget()
468{
469 CreateDockWidgetDialog dialog(this);
470 int ret = dialog.exec();
471 if (ret == QDialog::Rejected)
472 return;
473
474 QDockWidget *dw = new QDockWidget;
475 dw->setObjectName(dialog.objectName());
476 dw->setWindowTitle(dialog.objectName());
477 dw->setWidget(new QTextEdit);
478
479 Qt::DockWidgetArea area = dialog.location();
480 switch (area) {
481 case Qt::LeftDockWidgetArea:
482 case Qt::RightDockWidgetArea:
483 case Qt::TopDockWidgetArea:
484 case Qt::BottomDockWidgetArea:
485 addDockWidget(area, dw);
486 break;
487 default:
488 if (!restoreDockWidget(dw)) {
489 QMessageBox::warning(this, QString(), tr("Failed to restore dock widget"));
490 delete dw;
491 return;
492 }
493 break;
494 }
495
496 extraDockWidgets.append(dw);
497 destroyDockWidgetMenu->setEnabled(true);
498 destroyDockWidgetMenu->addAction(new QAction(dialog.objectName(), this));
499}
500
501void MainWindow::destroyDockWidget(QAction *action)
502{
503 int index = destroyDockWidgetMenu->actions().indexOf(action);
504 delete extraDockWidgets.takeAt(index);
505 destroyDockWidgetMenu->removeAction(action);
506 action->deleteLater();
507
508 if (destroyDockWidgetMenu->isEmpty())
509 destroyDockWidgetMenu->setEnabled(false);
510}
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