/**************************************************************************** ** ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the demonstration applications of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and Digia. For licensing terms and ** conditions see http://qt.digia.com/licensing. For further information ** use the contact form at http://qt.digia.com/contact-us. ** ** 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, Digia gives you certain additional ** rights. These rights are described in the Digia Qt LGPL Exception ** version 1.1, 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. ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "arthurwidgets.h" #include #include #include #include #include #include #include #include #include #include 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 QT_OPENGL_SUPPORT void ArthurFrame::enableOpenGL(bool use_opengl) { if (m_use_opengl == use_opengl) return; if (!glw && use_opengl) { glw = new GLWidget(this); glw->setAutoFillBackground(false); glw->disableAutoBufferSwap(); QApplication::postEvent(this, new QResizeEvent(size(), size())); } m_use_opengl = use_opengl; if (use_opengl) { glw->show(); } else { if (glw) glw->hide(); } update(); } #endif void ArthurFrame::paintEvent(QPaintEvent *e) { static QImage *static_image = 0; QPainter painter; if (preferImage() #ifdef QT_OPENGL_SUPPORT && !m_use_opengl #endif ) { if (!static_image || static_image->size() != size()) { delete static_image; static_image = new QImage(size(), QImage::Format_RGB32); } 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); painter.drawImage(e->rect(), *static_image, e->rect()); } #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 (findChild()) 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('&', "&"); contents.replace('<', "<"); contents.replace('>', ">"); 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("") + keyword + QLatin1String("")); contents.replace("(int ", "(int "); QStringList ppKeywords; ppKeywords << "#ifdef" << "#ifndef" << "#if" << "#endif" << "#else"; foreach (QString keyword, ppKeywords) contents.replace(keyword, QLatin1String("") + keyword + QLatin1String("")); contents.replace(QRegExp("(\\d\\d?)"), QLatin1String("\\1")); QRegExp commentRe("(//.+)\\n"); commentRe.setMinimal(true); contents.replace(commentRe, QLatin1String("\\1\n")); QRegExp stringLiteralRe("(\".+\")"); stringLiteralRe.setMinimal(true); contents.replace(stringLiteralRe, QLatin1String("\\1")); QString html = contents; html.prepend("
");
    html.append("
"); 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(); }