diff options
author | Jerome Pasion <jerome.pasion@digia.com> | 2012-10-24 15:51:15 +0200 |
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committer | Jerome Pasion <jerome.pasion@digia.com> | 2012-10-29 10:42:34 +0100 |
commit | b1e739b52416852014ee7a933aac81a28a9ac71f (patch) | |
tree | 11fa9f1754f097d18481ac9c56acee1a5f4df4c2 /src/gui/doc/snippets/plaintextlayout | |
parent | e52f178b0d21b84a5cedcfce17646fbc1fb84867 (diff) |
Qt GUI: Adding Rich Text Processing documentation from qtdoc
-included the snippets
-editing for technical accuracy still to be done.
-ported missing files from Qt 4
Change-Id: I0b2d27630b762c6518c08973a40b476d7852001d
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>
Diffstat (limited to 'src/gui/doc/snippets/plaintextlayout')
-rw-r--r-- | src/gui/doc/snippets/plaintextlayout/main.cpp | 52 | ||||
-rw-r--r-- | src/gui/doc/snippets/plaintextlayout/plaintextlayout.pro | 3 | ||||
-rw-r--r-- | src/gui/doc/snippets/plaintextlayout/window.cpp | 108 | ||||
-rw-r--r-- | src/gui/doc/snippets/plaintextlayout/window.h | 61 |
4 files changed, 224 insertions, 0 deletions
diff --git a/src/gui/doc/snippets/plaintextlayout/main.cpp b/src/gui/doc/snippets/plaintextlayout/main.cpp new file mode 100644 index 0000000000..3b10af4028 --- /dev/null +++ b/src/gui/doc/snippets/plaintextlayout/main.cpp @@ -0,0 +1,52 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the documentation of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names +** of its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> + +#include "window.h" + +int main(int argc, char *argv[]) +{ + QApplication app(argc, argv); + Window *window = new Window; + window->resize(337, 343); + window->show(); + return app.exec(); +} diff --git a/src/gui/doc/snippets/plaintextlayout/plaintextlayout.pro b/src/gui/doc/snippets/plaintextlayout/plaintextlayout.pro new file mode 100644 index 0000000000..6283406f25 --- /dev/null +++ b/src/gui/doc/snippets/plaintextlayout/plaintextlayout.pro @@ -0,0 +1,3 @@ +HEADERS = window.h +SOURCES = main.cpp \ + window.cpp diff --git a/src/gui/doc/snippets/plaintextlayout/window.cpp b/src/gui/doc/snippets/plaintextlayout/window.cpp new file mode 100644 index 0000000000..901cfb4880 --- /dev/null +++ b/src/gui/doc/snippets/plaintextlayout/window.cpp @@ -0,0 +1,108 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the documentation of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names +** of its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> +#include <math.h> + +#include "window.h" + +Window::Window(QWidget *parent) + : QWidget(parent) +{ + text = QString("Support for text rendering and layout in Qt 4 has been " + "redesigned around a system that allows textual content to " + "be represented in a more flexible way than was possible " + "with Qt 3. Qt 4 also provides a more convenient " + "programming interface for editing documents. These " + "improvements are made available through a reimplementation " + "of the existing text rendering engine, and the " + "introduction of several new classes. " + "See the relevant module overview for a detailed discussion " + "of this framework. The following sections provide a brief " + "overview of the main concepts behind Scribe."); + + setWindowTitle(tr("Plain Text Layout")); +} + +void Window::paintEvent(QPaintEvent *event) +{ +//! [0] + QTextLayout textLayout(text, font); + qreal margin = 10; + qreal radius = qMin(width()/2.0, height()/2.0) - margin; + QFontMetrics fm(font); + + qreal lineHeight = fm.height(); + qreal y = 0; + + textLayout.beginLayout(); + + while (1) { + // create a new line + QTextLine line = textLayout.createLine(); + if (!line.isValid()) + break; + + qreal x1 = qMax(0.0, pow(pow(radius,2)-pow(radius-y,2), 0.5)); + qreal x2 = qMax(0.0, pow(pow(radius,2)-pow(radius-(y+lineHeight),2), 0.5)); + qreal x = qMax(x1, x2) + margin; + qreal lineWidth = (width() - margin) - x; + + line.setLineWidth(lineWidth); + line.setPosition(QPointF(x, margin+y)); + y += line.height(); + } + + textLayout.endLayout(); + + QPainter painter; + painter.begin(this); + painter.setRenderHint(QPainter::Antialiasing); + painter.fillRect(rect(), Qt::white); + painter.setBrush(QBrush(Qt::black)); + painter.setPen(QPen(Qt::black)); + textLayout.draw(&painter, QPoint(0,0)); + + painter.setBrush(QBrush(QColor("#a6ce39"))); + painter.setPen(QPen(Qt::black)); + painter.drawEllipse(QRectF(-radius, margin, 2*radius, 2*radius)); + painter.end(); +//! [0] +} diff --git a/src/gui/doc/snippets/plaintextlayout/window.h b/src/gui/doc/snippets/plaintextlayout/window.h new file mode 100644 index 0000000000..d6292de412 --- /dev/null +++ b/src/gui/doc/snippets/plaintextlayout/window.h @@ -0,0 +1,61 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the documentation of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names +** of its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef WINDOW_H +#define WINDOW_H + +#include <QWidget> + +class Window : public QWidget +{ + Q_OBJECT + +public: + Window(QWidget *parent = 0); + +protected: + void paintEvent(QPaintEvent *event); + +private: + QFont font; + QString text; +}; + +#endif |