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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 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 the GNU General Public License version 3.0 requirements will be
+** met: 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "arthurwidgets.h"
+#include <QApplication>
+#include <QPainter>
+#include <QPainterPath>
+#include <QPixmapCache>
+#include <QtEvents>
+#include <QTextDocument>
+#include <QAbstractTextDocumentLayout>
+#include <QFile>
+#include <QTextBrowser>
+#include <QBoxLayout>
+
+#include <private/qpixmapdata_p.h>
+
+extern QPixmap cached(const QString &img);
+
+ArthurFrame::ArthurFrame(QWidget *parent)
+ : QWidget(parent)
+ , m_prefer_image(false)
+{
+#ifdef QT_OPENGL_SUPPORT
+ glw = 0;
+ m_use_opengl = false;
+ QGLFormat f = QGLFormat::defaultFormat();
+ f.setSampleBuffers(true);
+ f.setStencil(true);
+ f.setAlpha(true);
+ f.setAlphaBufferSize(8);
+ QGLFormat::setDefaultFormat(f);
+#endif
+ m_document = 0;
+ m_show_doc = false;
+
+ m_tile = QPixmap(128, 128);
+ m_tile.fill(Qt::white);
+ QPainter pt(&m_tile);
+ QColor color(230, 230, 230);
+ pt.fillRect(0, 0, 64, 64, color);
+ pt.fillRect(64, 64, 64, 64, color);
+ pt.end();
+
+// QPalette pal = palette();
+// pal.setBrush(backgroundRole(), m_tile);
+// setPalette(pal);
+
+#ifdef Q_WS_X11
+ QPixmap xRenderPixmap(1, 1);
+ m_prefer_image = xRenderPixmap.pixmapData()->classId() == QPixmapData::X11Class && !xRenderPixmap.x11PictureHandle();
+#endif
+}
+
+
+#ifdef QT_OPENGL_SUPPORT
+void ArthurFrame::enableOpenGL(bool use_opengl)
+{
+ m_use_opengl = use_opengl;
+
+ if (!glw) {
+ glw = new GLWidget(this);
+ glw->setAutoFillBackground(false);
+ glw->disableAutoBufferSwap();
+ QApplication::postEvent(this, new QResizeEvent(size(), size()));
+ }
+
+ if (use_opengl) {
+ glw->show();
+ } else {
+ glw->hide();
+ }
+
+ update();
+}
+#endif
+
+void ArthurFrame::paintEvent(QPaintEvent *e)
+{
+#ifdef Q_WS_QWS
+ static QPixmap *static_image = 0;
+#else
+ static QImage *static_image = 0;
+#endif
+ QPainter painter;
+ if (preferImage()
+#ifdef QT_OPENGL_SUPPORT
+ && !m_use_opengl
+#endif
+ ) {
+ if (!static_image || static_image->size() != size()) {
+ delete static_image;
+#ifdef Q_WS_QWS
+ static_image = new QPixmap(size());
+#else
+ static_image = new QImage(size(), QImage::Format_RGB32);
+#endif
+ }
+ painter.begin(static_image);
+
+ int o = 10;
+
+ QBrush bg = palette().brush(QPalette::Background);
+ painter.fillRect(0, 0, o, o, bg);
+ painter.fillRect(width() - o, 0, o, o, bg);
+ painter.fillRect(0, height() - o, o, o, bg);
+ painter.fillRect(width() - o, height() - o, o, o, bg);
+ } else {
+#ifdef QT_OPENGL_SUPPORT
+ if (m_use_opengl) {
+ painter.begin(glw);
+ painter.fillRect(QRectF(0, 0, glw->width(), glw->height()), palette().color(backgroundRole()));
+ } else {
+ painter.begin(this);
+ }
+#else
+ painter.begin(this);
+#endif
+ }
+
+ painter.setClipRect(e->rect());
+
+ painter.setRenderHint(QPainter::Antialiasing);
+
+ QPainterPath clipPath;
+
+ QRect r = rect();
+ qreal left = r.x() + 1;
+ qreal top = r.y() + 1;
+ qreal right = r.right();
+ qreal bottom = r.bottom();
+ qreal radius2 = 8 * 2;
+
+ clipPath.moveTo(right - radius2, top);
+ clipPath.arcTo(right - radius2, top, radius2, radius2, 90, -90);
+ clipPath.arcTo(right - radius2, bottom - radius2, radius2, radius2, 0, -90);
+ clipPath.arcTo(left, bottom - radius2, radius2, radius2, 270, -90);
+ clipPath.arcTo(left, top, radius2, radius2, 180, -90);
+ clipPath.closeSubpath();
+
+ painter.save();
+ painter.setClipPath(clipPath, Qt::IntersectClip);
+
+ painter.drawTiledPixmap(rect(), m_tile);
+
+ // client painting
+
+ paint(&painter);
+
+ painter.restore();
+
+ painter.save();
+ if (m_show_doc)
+ paintDescription(&painter);
+ painter.restore();
+
+ int level = 180;
+ painter.setPen(QPen(QColor(level, level, level), 2));
+ painter.setBrush(Qt::NoBrush);
+ painter.drawPath(clipPath);
+
+ if (preferImage()
+#ifdef QT_OPENGL_SUPPORT
+ && !m_use_opengl
+#endif
+ ) {
+ painter.end();
+ painter.begin(this);
+#ifdef Q_WS_QWS
+ painter.drawPixmap(e->rect(), *static_image, e->rect());
+#else
+ painter.drawImage(e->rect(), *static_image, e->rect());
+#endif
+ }
+
+#ifdef QT_OPENGL_SUPPORT
+ if (m_use_opengl && (inherits("PathDeformRenderer") || inherits("PathStrokeRenderer") || inherits("CompositionRenderer") || m_show_doc))
+ glw->swapBuffers();
+#endif
+}
+
+void ArthurFrame::resizeEvent(QResizeEvent *e)
+{
+#ifdef QT_OPENGL_SUPPORT
+ if (glw)
+ glw->setGeometry(0, 0, e->size().width()-1, e->size().height()-1);
+#endif
+ QWidget::resizeEvent(e);
+}
+
+void ArthurFrame::setDescriptionEnabled(bool enabled)
+{
+ if (m_show_doc != enabled) {
+ m_show_doc = enabled;
+ emit descriptionEnabledChanged(m_show_doc);
+ update();
+ }
+}
+
+void ArthurFrame::loadDescription(const QString &fileName)
+{
+ QFile textFile(fileName);
+ QString text;
+ if (!textFile.open(QFile::ReadOnly))
+ text = QString("Unable to load resource file: '%1'").arg(fileName);
+ else
+ text = textFile.readAll();
+ setDescription(text);
+}
+
+
+void ArthurFrame::setDescription(const QString &text)
+{
+ m_document = new QTextDocument(this);
+ m_document->setHtml(text);
+}
+
+void ArthurFrame::paintDescription(QPainter *painter)
+{
+ if (!m_document)
+ return;
+
+ int pageWidth = qMax(width() - 100, 100);
+ int pageHeight = qMax(height() - 100, 100);
+ if (pageWidth != m_document->pageSize().width()) {
+ m_document->setPageSize(QSize(pageWidth, pageHeight));
+ }
+
+ QRect textRect(width() / 2 - pageWidth / 2,
+ height() / 2 - pageHeight / 2,
+ pageWidth,
+ pageHeight);
+ int pad = 10;
+ QRect clearRect = textRect.adjusted(-pad, -pad, pad, pad);
+ painter->setPen(Qt::NoPen);
+ painter->setBrush(QColor(0, 0, 0, 63));
+ int shade = 10;
+ painter->drawRect(clearRect.x() + clearRect.width() + 1,
+ clearRect.y() + shade,
+ shade,
+ clearRect.height() + 1);
+ painter->drawRect(clearRect.x() + shade,
+ clearRect.y() + clearRect.height() + 1,
+ clearRect.width() - shade + 1,
+ shade);
+
+ painter->setRenderHint(QPainter::Antialiasing, false);
+ painter->setBrush(QColor(255, 255, 255, 220));
+ painter->setPen(Qt::black);
+ painter->drawRect(clearRect);
+
+ painter->setClipRegion(textRect, Qt::IntersectClip);
+ painter->translate(textRect.topLeft());
+
+ QAbstractTextDocumentLayout::PaintContext ctx;
+
+ QLinearGradient g(0, 0, 0, textRect.height());
+ g.setColorAt(0, Qt::black);
+ g.setColorAt(0.9, Qt::black);
+ g.setColorAt(1, Qt::transparent);
+
+ QPalette pal = palette();
+ pal.setBrush(QPalette::Text, g);
+
+ ctx.palette = pal;
+ ctx.clip = QRect(0, 0, textRect.width(), textRect.height());
+ m_document->documentLayout()->draw(painter, ctx);
+}
+
+void ArthurFrame::loadSourceFile(const QString &sourceFile)
+{
+ m_sourceFileName = sourceFile;
+}
+
+void ArthurFrame::showSource()
+{
+ // Check for existing source
+ if (qFindChild<QTextBrowser *>(this))
+ return;
+
+ QString contents;
+ if (m_sourceFileName.isEmpty()) {
+ contents = QString("No source for widget: '%1'").arg(objectName());
+ } else {
+ QFile f(m_sourceFileName);
+ if (!f.open(QFile::ReadOnly))
+ contents = QString("Could not open file: '%1'").arg(m_sourceFileName);
+ else
+ contents = f.readAll();
+ }
+
+ contents.replace('&', "&amp;");
+ contents.replace('<', "&lt;");
+ contents.replace('>', "&gt;");
+
+ QStringList keywords;
+ keywords << "for " << "if " << "switch " << " int " << "#include " << "const"
+ << "void " << "uint " << "case " << "double " << "#define " << "static"
+ << "new" << "this";
+
+ foreach (QString keyword, keywords)
+ contents.replace(keyword, QLatin1String("<font color=olive>") + keyword + QLatin1String("</font>"));
+ contents.replace("(int ", "(<font color=olive><b>int </b></font>");
+
+ QStringList ppKeywords;
+ ppKeywords << "#ifdef" << "#ifndef" << "#if" << "#endif" << "#else";
+
+ foreach (QString keyword, ppKeywords)
+ contents.replace(keyword, QLatin1String("<font color=navy>") + keyword + QLatin1String("</font>"));
+
+ contents.replace(QRegExp("(\\d\\d?)"), QLatin1String("<font color=navy>\\1</font>"));
+
+ QRegExp commentRe("(//.+)\\n");
+ commentRe.setMinimal(true);
+ contents.replace(commentRe, QLatin1String("<font color=red>\\1</font>\n"));
+
+ QRegExp stringLiteralRe("(\".+\")");
+ stringLiteralRe.setMinimal(true);
+ contents.replace(stringLiteralRe, QLatin1String("<font color=green>\\1</font>"));
+
+ QString html = contents;
+ html.prepend("<html><pre>");
+ html.append("</pre></html>");
+
+ QTextBrowser *sourceViewer = new QTextBrowser(0);
+ sourceViewer->setWindowTitle("Source: " + m_sourceFileName.mid(5));
+ sourceViewer->setParent(this, Qt::Dialog);
+ sourceViewer->setAttribute(Qt::WA_DeleteOnClose);
+ sourceViewer->setLineWrapMode(QTextEdit::NoWrap);
+ sourceViewer->setHtml(html);
+ sourceViewer->resize(600, 600);
+ sourceViewer->show();
+}
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