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41
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1 /****************************************************************************
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2 **
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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4 ** Contact: Qt Software Information (qt-info@nokia.com)
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5 **
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6 ** This file is part of the demonstration applications of the Qt Toolkit.
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7 **
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8 ** $QT_BEGIN_LICENSE:LGPL$
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9 ** Commercial Usage
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10 ** Licensees holding valid Qt Commercial licenses may use this file in
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11 ** accordance with the Qt Commercial License Agreement provided with the
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12 ** Software or, alternatively, in accordance with the terms contained in
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13 ** a written agreement between you and Nokia.
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14 **
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15 ** GNU Lesser General Public License Usage
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16 ** Alternatively, this file may be used under the terms of the GNU Lesser
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17 ** General Public License version 2.1 as published by the Free Software
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18 ** Foundation and appearing in the file LICENSE.LGPL included in the
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19 ** packaging of this file. Please review the following information to
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20 ** ensure the GNU Lesser General Public License version 2.1 requirements
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21 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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22 **
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23 ** In addition, as a special exception, Nokia gives you certain
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24 ** additional rights. These rights are described in the Nokia Qt LGPL
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25 ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
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26 ** package.
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27 **
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28 ** GNU General Public License Usage
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29 ** Alternatively, this file may be used under the terms of the GNU
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30 ** General Public License version 3.0 as published by the Free Software
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31 ** Foundation and appearing in the file LICENSE.GPL included in the
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32 ** packaging of this file. Please review the following information to
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33 ** ensure the GNU General Public License version 3.0 requirements will be
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34 ** met: http://www.gnu.org/copyleft/gpl.html.
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35 **
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36 ** If you are unsure which license is appropriate for your use, please
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37 ** contact the sales department at qt-sales@nokia.com.
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38 ** $QT_END_LICENSE$
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39 **
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40 ****************************************************************************/
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162
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41 module arthurwidgets;
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41
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42
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43
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44 import qt.core.QFile,
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45 qt.gui.QApplication,
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46 qt.gui.QPainter,
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47 qt.gui.QPainterPath,
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48 qt.gui.QPixmapCache,
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49 qt.gui.QTextDocument,
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50 qt.gui.QAbstractTextDocumentLayout,
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51 qt.gui.QLinearGradient,
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52 qt.gui.QTextBrowser,
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53 qt.gui.QBoxLayout,
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54 qt.opengl.QGL,
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55 qt.Signal,
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56 tango.text.Util;
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57
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58 import tango.text.Regex : Regex;
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59
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60 //#include <private/qpixmapdata_p.h>
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61
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62 //extern QPixmap cached(const QString &img);
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63
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64 version (QT_OPENGL_SUPPORT)
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65 {
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66 import qt.opengl.QGLWidget;
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67 class GLWidget : QGLWidget
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68 {
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69 this(QWidget parent)
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70 {
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71 super(new QGLFormat(QGL.SampleBuffers), parent);
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72 }
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73
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74 void disableAutoBufferSwap() { setAutoBufferSwap(false); }
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75 override void paintEvent(QPaintEvent) { parentWidget().update(); }
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76 }
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77 }
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78
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79 class ArthurFrame : QWidget
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80 {
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81 protected:
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82
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83 version(QT_OPENGL_SUPPORT)
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84 {
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85 GLWidget glw;
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86 bool m_use_opengl;
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87 }
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88
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89 QPixmap m_tile;
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90
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91 bool m_show_doc;
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92 bool m_prefer_image;
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93 QTextDocument m_document;
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94
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95 string m_sourceFileName;
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96
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97 public:
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98 mixin Signal!("descriptionEnabledChanged", bool);
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99
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100 bool preferImage() { return m_prefer_image; }
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101
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102 void paint(QPainter) {}
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103
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104 this(QWidget parent)
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105 {
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106 super(parent);
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107
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108 version (QT_OPENGL_SUPPORT)
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109 {
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110 QGLFormat f = QGLFormat.defaultFormat();
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111 f.setSampleBuffers(true);
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112 f.setStencil(true);
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113 f.setAlpha(true);
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114 f.setAlphaBufferSize(8);
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115 QGLFormat.setDefaultFormat(f);
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116 }
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117
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118 m_tile = new QPixmap(128, 128);
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119 m_tile.fill(new QColor(Qt.white));
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120 scope pt = new QPainter(m_tile);
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121 auto color = new QColor(230, 230, 230);
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122 pt.fillRect(0, 0, 64, 64, color);
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123 pt.fillRect(64, 64, 64, 64, color);
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124 pt.end();
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125
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126 // QPalette pal = palette();
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127 // pal.setBrush(backgroundRole(), m_tile);
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128 // setPalette(pal);
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129
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130 version (Q_WS_X11)
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131 {
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132 auto xRenderPixmap = new QPixmap(1, 1);
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133 m_prefer_image = xRenderPixmap.pixmapData().classId() == QPixmapData.X11Class && !xRenderPixmap.x11PictureHandle();
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134 }
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135 }
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136
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137 version (QT_OPENGL_SUPPORT)
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138 {
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139 void enableOpenGL(bool use_opengl)
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140 {
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141 m_use_opengl = use_opengl;
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142
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143 if (!glw) {
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144 glw = new GLWidget(this);
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145 glw.setAutoFillBackground(false);
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146 glw.disableAutoBufferSwap();
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147 QApplication.postEvent(this, new QResizeEvent(size(), size()));
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148 }
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149
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150 if (use_opengl) {
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151 glw.show();
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152 } else {
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153 glw.hide();
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154 }
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155
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156 update();
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157 }
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158
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159 bool usesOpenGL() { return m_use_opengl; }
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160 QGLWidget glWidget(){ return glw; }
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161 }
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162
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163 override void paintEvent(QPaintEvent e)
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164 {
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165 version (Q_WS_QWS)
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166 static QPixmap static_image;
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167 else
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168 static QImage static_image;
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169
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170 auto painter = new QPainter;
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171
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172 version (QT_OPENGL_SUPPORT)
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173 auto prefImage = preferImage && !m_use_opengl;
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174 else
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175 auto prefImage = preferImage;
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176
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177 if (prefImage) {
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178 if (!static_image || static_image.size() != size()) {
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179 delete static_image;
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180 version (Q_WS_QWS)
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181 static_image = new QPixmap(size());
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182 else
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183 static_image = new QImage(size(), QImage.Format_RGB32);
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184 }
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185 painter.begin(static_image);
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186
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187 int o = 10;
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188
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189 QBrush bg = palette().brush(QPalette.Window);
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190 painter.fillRect(0, 0, o, o, bg);
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191 painter.fillRect(width() - o, 0, o, o, bg);
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192 painter.fillRect(0, height() - o, o, o, bg);
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193 painter.fillRect(width() - o, height() - o, o, o, bg);
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194 } else {
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195 version (QT_OPENGL_SUPPORT)
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196 {
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197 if (m_use_opengl) {
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198 painter.begin(glw);
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199 painter.fillRect(new QRectF(0, 0, glw.width(), glw.height()), palette().color(backgroundRole()));
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200 } else {
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201 painter.begin(this);
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202 }
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203 }
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204 else
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205 painter.begin(this);
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206 }
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207
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208 painter.setClipRect(e.rect());
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209
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210 painter.setRenderHint(QPainter.Antialiasing);
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211
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212 auto clipPath = new QPainterPath;
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213
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214 QRect r = rect();
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215 qreal left = r.x() + 1;
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216 qreal top = r.y() + 1;
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217 qreal right = r.right();
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218 qreal bottom = r.bottom();
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219 qreal radius2 = 8 * 2;
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220
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221 clipPath.moveTo(right - radius2, top);
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222 clipPath.arcTo(right - radius2, top, radius2, radius2, 90, -90);
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223 clipPath.arcTo(right - radius2, bottom - radius2, radius2, radius2, 0, -90);
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224 clipPath.arcTo(left, bottom - radius2, radius2, radius2, 270, -90);
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225 clipPath.arcTo(left, top, radius2, radius2, 180, -90);
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226 clipPath.closeSubpath();
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227
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228 painter.save();
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229 painter.setClipPath(clipPath, Qt.IntersectClip);
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230
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231 painter.drawTiledPixmap(rect(), m_tile);
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232
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233 // client painting
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234
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235 paint(painter);
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236 painter.restore();
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237
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238 painter.save();
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239 if (m_show_doc)
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240 paintDescription(painter);
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241 painter.restore();
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242
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243 int level = 180;
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244 painter.setPen(new QPen(new QBrush(new QColor(level, level, level)), 2));
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245 painter.setBrush(Qt.NoBrush);
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246 painter.drawPath(clipPath);
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247
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248 if (prefImage) {
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249 painter.end();
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250 painter.begin(this);
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251 version (Q_WS_QWS)
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252 painter.drawPixmap(e.rect(), static_image, e.rect());
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253 else
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254 painter.drawImage(e.rect(), static_image, e.rect());
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255 }
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256
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257 // TODO: this sucks
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258 version (QT_OPENGL_SUPPORT) {
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259 if (m_use_opengl && (inherits("PathDeformRenderer") || inherits("PathStrokeRenderer") || inherits("CompositionRenderer") || m_show_doc))
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260 glw.swapBuffers();
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261 }
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262 }
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263
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264 void resizeEvent(QResizeEvent e)
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265 {
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266 version (QT_OPENGL_SUPPORT)
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267 {
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268 if (glw)
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269 glw.setGeometry(0, 0, e.size().width()-1, e.size().height()-1);
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270 }
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271 super.resizeEvent(e);
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272 }
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273
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274 void setDescriptionEnabled(bool enabled)
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275 {
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276 if (m_show_doc != enabled) {
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277 m_show_doc = enabled;
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278 descriptionEnabledChanged.emit(m_show_doc);
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279 update();
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280 }
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281 }
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282
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283 void loadDescription(string fileName)
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284 {
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285 auto textFile = new QFile(fileName);
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286 string text;
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287 if (!textFile.open(QFile.ReadOnly))
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288 text = "Unable to load resource file: " ~ fileName;
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289 else
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290 text = textFile.readAll().toString; // TODO: excessive copying
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291 setDescription(text);
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292 }
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293
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294 void setDescription(string text)
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295 {
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296 m_document = new QTextDocument(this);
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297 m_document.setHtml(text);
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298 }
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299
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300 void paintDescription(QPainter painter)
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301 {
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302 if (!m_document)
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303 return;
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304
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305 int pageWidth = qMax(width() - 100, 100);
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306 int pageHeight = qMax(height() - 100, 100);
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307 if (pageWidth != m_document.pageSize().width()) {
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308 m_document.setPageSize(QSizeF(pageWidth, pageHeight));
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309 }
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310
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311 auto textRect = new QRect(width() / 2 - pageWidth / 2,
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312 height() / 2 - pageHeight / 2,
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313 pageWidth,
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314 pageHeight);
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315 int pad = 10;
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316 QRect clearRect = textRect.adjusted(-pad, -pad, pad, pad);
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317 painter.setPen(Qt.NoPen);
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318 painter.setBrush(new QColor(0, 0, 0, 63));
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319 int shade = 10;
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320 painter.drawRect(clearRect.x() + clearRect.width() + 1,
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321 clearRect.y() + shade,
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322 shade,
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323 clearRect.height() + 1);
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324 painter.drawRect(clearRect.x() + shade,
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325 clearRect.y() + clearRect.height() + 1,
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326 clearRect.width() - shade + 1,
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327 shade);
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328
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329 painter.setRenderHint(QPainter.Antialiasing, false);
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330 painter.setBrush(new QColor(255, 255, 255, 220));
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331 painter.setPen(new QColor(Qt.black));
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332 painter.drawRect(clearRect);
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333
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334 painter.setClipRect(textRect, Qt.IntersectClip);
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335 painter.translate(textRect.topLeft());
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336
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337 auto ctx = new QAbstractTextDocumentLayout_PaintContext;
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338
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339 auto g = new QLinearGradient(0, 0, 0, textRect.height());
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340 g.setColorAt(0, new QColor(Qt.black));
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341 g.setColorAt(0.9, new QColor(Qt.black));
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342 g.setColorAt(1, new QColor(Qt.transparent));
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343
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344 QPalette pal = palette();
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345 pal.setBrush(QPalette.Text, new QBrush(g));
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346
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347 ctx.setPalette(pal);
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348 ctx.setClip(new QRectF(0, 0, textRect.width(), textRect.height()));
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349 m_document.documentLayout().draw(painter, ctx);
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350 }
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351
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352 void loadSourceFile(string sourceName)
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353 {
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354 m_sourceFileName = sourceName;
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355 }
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356
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357 void showSource()
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358 {
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359 // Check for existing source
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360 if (findChild!(QTextBrowser))
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361 return;
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362
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363 string contents;
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364 if (!m_sourceFileName.length) {
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365 contents = "No source for widget: " ~ objectName();
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366 } else {
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367 auto f = new QFile(m_sourceFileName);
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368 if (!f.open(QFile.ReadOnly))
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369 contents = "Could not open file: " ~ m_sourceFileName;
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370 else
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371 contents = f.readAll.toString;
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372 }
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373
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374 contents = contents.substitute("&", "&");
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375 contents = contents.substitute("<", "<");
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376 contents = contents.substitute(">", ">");
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377
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378 static const string[] keywords =
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379 ["for ", "if ", "switch ", " int ", "#include ", "const"
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380 , "void ", "uint ", "case ", "double ", "#define ", "static"
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381 , "new", "this"];
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382
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383 foreach (keyword; keywords)
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384 contents = contents.substitute(keyword, "<font color=olive>" ~ keyword ~ "</font>");
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385 contents = contents.substitute("(int ", "(<font color=olive><b>int </b></font>");
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386
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387 static const string[] ppKeywords =
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388 ["#ifdef", "#ifndef", "#if", "#endif", "#else"];
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389
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390 foreach (keyword; ppKeywords)
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391 contents = contents.substitute(keyword, "<font color=navy>" ~ keyword ~ "</font>");
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392
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393 auto ddRe = new Regex("(\\d\\d?)");
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394 contents = ddRe.replaceAll(contents, "<font color=navy>\\1</font>");
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395
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396 auto commentRe = new Regex("(//.+?)\\n");
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397 contents = commentRe.replaceAll(contents, "<font color=red>\\1</font>\n");
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398
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399 auto stringLiteralRe = new Regex("(\".+?\")");
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400 contents = stringLiteralRe.replaceAll(contents, "<font color=green>\\1</font>");
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401
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402 auto html = contents.dup;
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403 html = "<html><pre>" ~ html ~ "</pre></html>";
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404
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405 QTextBrowser sourceViewer = new QTextBrowser(null);
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406 sourceViewer.setWindowTitle("Source: " ~ m_sourceFileName[5..$]);
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407 sourceViewer.setParent(this, Qt.Dialog);
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408 sourceViewer.setAttribute(Qt.WA_DeleteOnClose);
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409 sourceViewer.setLineWrapMode(QTextEdit.NoWrap);
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410 sourceViewer.setHtml(html);
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411 sourceViewer.resize(600, 600);
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412 sourceViewer.show();
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413 }
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414 }
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