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comparison demos/shared/arthurwidgets.d @ 41:691e68637348

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non-working deform example
author maxter
date Sun, 17 May 2009 12:41:14 +0000
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40:a5cc4ada07f5 41:691e68637348
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
43 import qt.core.QFile,
44 qt.gui.QApplication,
45 qt.gui.QPainter,
46 qt.gui.QPainterPath,
47 qt.gui.QPixmapCache,
48 qt.gui.QTextDocument,
49 qt.gui.QAbstractTextDocumentLayout,
50 qt.gui.QLinearGradient,
51
52 qt.gui.QTextBrowser,
53 qt.gui.QBoxLayout,
54 qt.opengl.QGL,
55 qt.Signal,
56 tango.text.Util;
57
58 import tango.text.Regex : Regex;
59
60 //#include <private/qpixmapdata_p.h>
61
62 //extern QPixmap cached(const QString &img);
63
64 version (QT_OPENGL_SUPPORT)
65 {
66 import qt.opengl.QGLWidget;
67 class GLWidget : QGLWidget
68 {
69 this(QWidget parent)
70 {
71 super(new QGLFormat(QGL.SampleBuffers), parent);
72 }
73
74 void disableAutoBufferSwap() { setAutoBufferSwap(false); }
75 override void paintEvent(QPaintEvent) { parentWidget().update(); }
76 }
77 }
78
79 class ArthurFrame : QWidget
80 {
81 protected:
82
83 version(QT_OPENGL_SUPPORT)
84 {
85 GLWidget glw;
86 bool m_use_opengl;
87 }
88
89 QPixmap m_tile;
90
91 bool m_show_doc;
92 bool m_prefer_image;
93 QTextDocument m_document;
94
95 string m_sourceFileName;
96
97 public:
98 mixin Signal!("descriptionEnabledChanged", bool);
99
100 bool preferImage() { return m_prefer_image; }
101
102 void paint(QPainter) {}
103
104 this(QWidget parent)
105 {
106 super(parent);
107
108 version (QT_OPENGL_SUPPORT)
109 {
110 QGLFormat f = QGLFormat.defaultFormat();
111 f.setSampleBuffers(true);
112 f.setStencil(true);
113 f.setAlpha(true);
114 f.setAlphaBufferSize(8);
115 QGLFormat.setDefaultFormat(f);
116 }
117
118 m_tile = new QPixmap(128, 128);
119 m_tile.fill(new QColor(Qt.white));
120 scope pt = new QPainter(m_tile);
121 auto color = new QColor(230, 230, 230);
122 pt.fillRect(0, 0, 64, 64, color);
123 pt.fillRect(64, 64, 64, 64, color);
124 pt.end();
125
126 // QPalette pal = palette();
127 // pal.setBrush(backgroundRole(), m_tile);
128 // setPalette(pal);
129
130 version (Q_WS_X11)
131 {
132 auto xRenderPixmap = new QPixmap(1, 1);
133 m_prefer_image = xRenderPixmap.pixmapData().classId() == QPixmapData.X11Class && !xRenderPixmap.x11PictureHandle();
134 }
135 }
136
137 version (QT_OPENGL_SUPPORT)
138 {
139 void enableOpenGL(bool use_opengl)
140 {
141 m_use_opengl = use_opengl;
142
143 if (!glw) {
144 glw = new GLWidget(this);
145 glw.setAutoFillBackground(false);
146 glw.disableAutoBufferSwap();
147 QApplication.postEvent(this, new QResizeEvent(size(), size()));
148 }
149
150 if (use_opengl) {
151 glw.show();
152 } else {
153 glw.hide();
154 }
155
156 update();
157 }
158
159 bool usesOpenGL() { return m_use_opengl; }
160 QGLWidget glWidget(){ return glw; }
161 }
162
163 override void paintEvent(QPaintEvent e)
164 {
165 version (Q_WS_QWS)
166 static QPixmap static_image;
167 else
168 static QImage static_image;
169
170 auto painter = new QPainter;
171
172 version (QT_OPENGL_SUPPORT)
173 auto prefImage = preferImage && !m_use_opengl;
174 else
175 auto prefImage = preferImage;
176
177 if (prefImage) {
178 if (!static_image || static_image.size() != size()) {
179 delete static_image;
180 version (Q_WS_QWS)
181 static_image = new QPixmap(size());
182 else
183 static_image = new QImage(size(), QImage.Format_RGB32);
184 }
185 painter.begin(static_image);
186
187 int o = 10;
188
189 QBrush bg = palette().brush(QPalette.Window);
190 painter.fillRect(0, 0, o, o, bg);
191 painter.fillRect(width() - o, 0, o, o, bg);
192 painter.fillRect(0, height() - o, o, o, bg);
193 painter.fillRect(width() - o, height() - o, o, o, bg);
194 } else {
195 version (QT_OPENGL_SUPPORT)
196 {
197 if (m_use_opengl) {
198 painter.begin(glw);
199 painter.fillRect(new QRectF(0, 0, glw.width(), glw.height()), palette().color(backgroundRole()));
200 } else {
201 painter.begin(this);
202 }
203 }
204 else
205 painter.begin(this);
206 }
207
208 painter.setClipRect(e.rect());
209
210 painter.setRenderHint(QPainter.Antialiasing);
211
212 auto clipPath = new QPainterPath;
213
214 QRect r = rect();
215 qreal left = r.x() + 1;
216 qreal top = r.y() + 1;
217 qreal right = r.right();
218 qreal bottom = r.bottom();
219 qreal radius2 = 8 * 2;
220
221 clipPath.moveTo(right - radius2, top);
222 clipPath.arcTo(right - radius2, top, radius2, radius2, 90, -90);
223 clipPath.arcTo(right - radius2, bottom - radius2, radius2, radius2, 0, -90);
224 clipPath.arcTo(left, bottom - radius2, radius2, radius2, 270, -90);
225 clipPath.arcTo(left, top, radius2, radius2, 180, -90);
226 clipPath.closeSubpath();
227
228 painter.save();
229 painter.setClipPath(clipPath, Qt.IntersectClip);
230
231 painter.drawTiledPixmap(rect(), m_tile);
232
233 // client painting
234
235 paint(painter);
236 painter.restore();
237
238 painter.save();
239 if (m_show_doc)
240 paintDescription(painter);
241 painter.restore();
242
243 int level = 180;
244 painter.setPen(new QPen(new QBrush(new QColor(level, level, level)), 2));
245 painter.setBrush(Qt.NoBrush);
246 painter.drawPath(clipPath);
247
248 if (prefImage) {
249 painter.end();
250 painter.begin(this);
251 version (Q_WS_QWS)
252 painter.drawPixmap(e.rect(), static_image, e.rect());
253 else
254 painter.drawImage(e.rect(), static_image, e.rect());
255 }
256
257 // TODO: this sucks
258 version (QT_OPENGL_SUPPORT) {
259 if (m_use_opengl && (inherits("PathDeformRenderer") || inherits("PathStrokeRenderer") || inherits("CompositionRenderer") || m_show_doc))
260 glw.swapBuffers();
261 }
262 }
263
264 void resizeEvent(QResizeEvent e)
265 {
266 version (QT_OPENGL_SUPPORT)
267 {
268 if (glw)
269 glw.setGeometry(0, 0, e.size().width()-1, e.size().height()-1);
270 }
271 super.resizeEvent(e);
272 }
273
274 void setDescriptionEnabled(bool enabled)
275 {
276 if (m_show_doc != enabled) {
277 m_show_doc = enabled;
278 descriptionEnabledChanged.emit(m_show_doc);
279 update();
280 }
281 }
282
283 void loadDescription(string fileName)
284 {
285 auto textFile = new QFile(fileName);
286 string text;
287 if (!textFile.open(QFile.ReadOnly))
288 text = "Unable to load resource file: " ~ fileName;
289 else
290 text = textFile.readAll().toString; // TODO: excessive copying
291 setDescription(text);
292 }
293
294 void setDescription(string text)
295 {
296 m_document = new QTextDocument(this);
297 m_document.setHtml(text);
298 }
299
300 void paintDescription(QPainter painter)
301 {
302 if (!m_document)
303 return;
304
305 int pageWidth = qMax(width() - 100, 100);
306 int pageHeight = qMax(height() - 100, 100);
307 if (pageWidth != m_document.pageSize().width()) {
308 m_document.setPageSize(QSizeF(pageWidth, pageHeight));
309 }
310
311 auto textRect = new QRect(width() / 2 - pageWidth / 2,
312 height() / 2 - pageHeight / 2,
313 pageWidth,
314 pageHeight);
315 int pad = 10;
316 QRect clearRect = textRect.adjusted(-pad, -pad, pad, pad);
317 painter.setPen(Qt.NoPen);
318 painter.setBrush(new QColor(0, 0, 0, 63));
319 int shade = 10;
320 painter.drawRect(clearRect.x() + clearRect.width() + 1,
321 clearRect.y() + shade,
322 shade,
323 clearRect.height() + 1);
324 painter.drawRect(clearRect.x() + shade,
325 clearRect.y() + clearRect.height() + 1,
326 clearRect.width() - shade + 1,
327 shade);
328
329 painter.setRenderHint(QPainter.Antialiasing, false);
330 painter.setBrush(new QColor(255, 255, 255, 220));
331 painter.setPen(new QColor(Qt.black));
332 painter.drawRect(clearRect);
333
334 painter.setClipRect(textRect, Qt.IntersectClip);
335 painter.translate(textRect.topLeft());
336
337 auto ctx = new QAbstractTextDocumentLayout_PaintContext;
338
339 auto g = new QLinearGradient(0, 0, 0, textRect.height());
340 g.setColorAt(0, new QColor(Qt.black));
341 g.setColorAt(0.9, new QColor(Qt.black));
342 g.setColorAt(1, new QColor(Qt.transparent));
343
344 QPalette pal = palette();
345 pal.setBrush(QPalette.Text, new QBrush(g));
346
347 ctx.setPalette(pal);
348 ctx.setClip(new QRectF(0, 0, textRect.width(), textRect.height()));
349 m_document.documentLayout().draw(painter, ctx);
350 }
351
352 void loadSourceFile(string sourceName)
353 {
354 m_sourceFileName = sourceName;
355 }
356
357 void showSource()
358 {
359 // Check for existing source
360 if (findChild!(QTextBrowser))
361 return;
362
363 string contents;
364 if (!m_sourceFileName.length) {
365 contents = "No source for widget: " ~ objectName();
366 } else {
367 auto f = new QFile(m_sourceFileName);
368 if (!f.open(QFile.ReadOnly))
369 contents = "Could not open file: " ~ m_sourceFileName;
370 else
371 contents = f.readAll.toString;
372 }
373
374 contents = contents.substitute("&", "&amp;");
375 contents = contents.substitute("<", "&lt;");
376 contents = contents.substitute(">", "&gt;");
377
378 static const string[] keywords =
379 ["for ", "if ", "switch ", " int ", "#include ", "const"
380 , "void ", "uint ", "case ", "double ", "#define ", "static"
381 , "new", "this"];
382
383 foreach (keyword; keywords)
384 contents = contents.substitute(keyword, "<font color=olive>" ~ keyword ~ "</font>");
385 contents = contents.substitute("(int ", "(<font color=olive><b>int </b></font>");
386
387 static const string[] ppKeywords =
388 ["#ifdef", "#ifndef", "#if", "#endif", "#else"];
389
390 foreach (keyword; ppKeywords)
391 contents = contents.substitute(keyword, "<font color=navy>" ~ keyword ~ "</font>");
392
393 auto ddRe = new Regex("(\\d\\d?)");
394 contents = ddRe.replaceAll(contents, "<font color=navy>\\1</font>");
395
396 auto commentRe = new Regex("(//.+?)\\n");
397 contents = commentRe.replaceAll(contents, "<font color=red>\\1</font>\n");
398
399 auto stringLiteralRe = new Regex("(\".+?\")");
400 contents = stringLiteralRe.replaceAll(contents, "<font color=green>\\1</font>");
401
402 auto html = contents.dup;
403 html = "<html><pre>" ~ html ~ "</pre></html>";
404
405 QTextBrowser sourceViewer = new QTextBrowser(null);
406 sourceViewer.setWindowTitle("Source: " ~ m_sourceFileName[5..$]);
407 sourceViewer.setParent(this, Qt.Dialog);
408 sourceViewer.setAttribute(Qt.WA_DeleteOnClose);
409 sourceViewer.setLineWrapMode(QTextEdit.NoWrap);
410 sourceViewer.setHtml(html);
411 sourceViewer.resize(600, 600);
412 sourceViewer.show();
413 }
414 }