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comparison examples/desktop/screenshot/screenshot.d @ 120:2c9ef955a171

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add desktop examples
author mandel
date Fri, 05 Jun 2009 11:52:21 +0000
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children 256ab6cb8e85
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119:97650cedf5d7 120:2c9ef955a171
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 examples 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 module screenshot;
42
43
44 import qt.gui.QPixmap;
45 import qt.gui.QWidget;
46 import qt.gui.QCheckBox;
47 import qt.gui.QGridLayout;
48 import qt.gui.QGroupBox;
49 import qt.gui.QHBoxLayout;
50 import qt.gui.QLabel;
51 import qt.gui.QPushButton;
52 import qt.gui.QSpinBox;
53 import qt.gui.QVBoxLayout;
54 import qt.gui.QFileDialog;
55 import qt.core.QDir;
56 import qt.core.QTimer;
57
58 import tango.text.convert.Format;
59 import tango.text.Ascii;
60
61
62 class Screenshot : public QWidget
63 {
64 public:
65
66 this()
67 {
68 screenshotLabel = new QLabel;
69 screenshotLabel.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding);
70 screenshotLabel.setAlignment(Qt.AlignCenter);
71 screenshotLabel.setMinimumSize(240, 160);
72
73 createOptionsGroupBox();
74 createButtonsLayout();
75
76 mainLayout = new QVBoxLayout;
77 mainLayout.addWidget(screenshotLabel);
78 mainLayout.addWidget(optionsGroupBox);
79 mainLayout.addLayout(buttonsLayout);
80 setLayout(mainLayout);
81
82 shootScreen();
83 delaySpinBox.setValue(5);
84
85 setWindowTitle(tr("Screenshot"));
86 resize(300, 200);
87 }
88
89 protected:
90
91 void resizeEvent(QResizeEvent /* event */)
92 {
93 QSize scaledSize = originalPixmap.size();
94 scaledSize.scale(screenshotLabel.size(), Qt.KeepAspectRatio);
95 if (!screenshotLabel.pixmap() || scaledSize != screenshotLabel.pixmap().size())
96 updateScreenshotLabel();
97 }
98
99 private:
100
101 void newScreenshot()
102 {
103 if (hideThisWindowCheckBox.isChecked())
104 hide();
105 newScreenshotButton.setDisabled(true);
106
107 QTimer.singleShot(delaySpinBox.value() * 1000, this, SLOT(shootScreen()));
108 }
109
110 void saveScreenshot()
111 {
112 string format = "png";
113 string initialPath = QDir.currentPath() + tr("/untitled.") + format;
114
115 string fileName = QFileDialog.getSaveFileName(this, tr("Save As"), initialPath,
116 Format(tr("{} Files (*.{});;All Files (*)"), toUpper(format), format));
117 if (fileName.length)
118 originalPixmap.save(fileName, format);
119 }
120
121 void shootScreen()
122 {
123 if (delaySpinBox.value() != 0)
124 QApplication.beep();
125
126 originalPixmap = new QPixmap(); // clear image for low memory situations
127
128 // on embedded devices.
129 originalPixmap = QPixmap.grabWindow(QApplication.desktop().winId());
130 updateScreenshotLabel();
131
132 newScreenshotButton.setDisabled(false);
133 if (hideThisWindowCheckBox.isChecked())
134 show();
135 }
136
137 void updateCheckBox()
138 {
139 if (delaySpinBox.value() == 0) {
140 hideThisWindowCheckBox.setDisabled(true);
141 hideThisWindowCheckBox.setChecked(false);
142 }
143 else
144 hideThisWindowCheckBox.setDisabled(false);
145 }
146
147 private:
148
149 void createOptionsGroupBox()
150 {
151 optionsGroupBox = new QGroupBox(tr("Options"));
152
153 delaySpinBox = new QSpinBox;
154 delaySpinBox.setSuffix(tr(" s"));
155 delaySpinBox.setMaximum(60);
156 delaySpinBox.valueChanged.connect(&this.updateCheckBox);
157
158 delaySpinBoxLabel = new QLabel(tr("Screenshot Delay:"));
159
160 hideThisWindowCheckBox = new QCheckBox(tr("Hide This Window"));
161
162 optionsGroupBoxLayout = new QGridLayout;
163 optionsGroupBoxLayout.addWidget(delaySpinBoxLabel, 0, 0);
164 optionsGroupBoxLayout.addWidget(delaySpinBox, 0, 1);
165 optionsGroupBoxLayout.addWidget(hideThisWindowCheckBox, 1, 0, 1, 2);
166 optionsGroupBox.setLayout(optionsGroupBoxLayout);
167 }
168
169 void createButtonsLayout()
170 {
171 newScreenshotButton = createButton(tr("New Screenshot"), &this.newScreenshot);
172
173 saveScreenshotButton = createButton(tr("Save Screenshot"), &this.saveScreenshot);
174
175 quitScreenshotButton = createButton(tr("Quit"), &this.close);
176
177 buttonsLayout = new QHBoxLayout;
178 buttonsLayout.addStretch();
179 buttonsLayout.addWidget(newScreenshotButton);
180 buttonsLayout.addWidget(saveScreenshotButton);
181 buttonsLayout.addWidget(quitScreenshotButton);
182 }
183
184 QPushButton createButton(string text, void delegate() slot)
185 {
186 QPushButton button = new QPushButton(text);
187 button.clicked.connect(slot);
188 return button;
189 }
190
191 void updateScreenshotLabel()
192 {
193 screenshotLabel.setPixmap(originalPixmap.scaled(screenshotLabel.size(), Qt.KeepAspectRatio, Qt.SmoothTransformation));
194 }
195
196 QPixmap originalPixmap;
197
198 QLabel screenshotLabel;
199 QGroupBox optionsGroupBox;
200 QSpinBox delaySpinBox;
201 QLabel delaySpinBoxLabel;
202 QCheckBox hideThisWindowCheckBox;
203 QPushButton newScreenshotButton;
204 QPushButton saveScreenshotButton;
205 QPushButton quitScreenshotButton;
206
207 QVBoxLayout mainLayout;
208 QGridLayout optionsGroupBoxLayout;
209 QHBoxLayout buttonsLayout;
210 }