diff options
Diffstat (limited to 'src/gui/doc/snippets/code/src_gui_text_qtextlayout.cpp')
| -rw-r--r-- | src/gui/doc/snippets/code/src_gui_text_qtextlayout.cpp | 91 |
1 files changed, 41 insertions, 50 deletions
diff --git a/src/gui/doc/snippets/code/src_gui_text_qtextlayout.cpp b/src/gui/doc/snippets/code/src_gui_text_qtextlayout.cpp index 4a156edac9..70ec6b01ea 100644 --- a/src/gui/doc/snippets/code/src_gui_text_qtextlayout.cpp +++ b/src/gui/doc/snippets/code/src_gui_text_qtextlayout.cpp @@ -1,52 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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 The Qt Company Ltd 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause #include <QFont> #include <QFontMetrics> #include <QPainter> @@ -57,6 +10,7 @@ namespace src_gui_text_qtextlayout { struct Wrapper : public QPaintDevice { void wrapper1(); + void elided(); }; QTextLayout textLayout; @@ -71,7 +25,7 @@ int leading = fontMetrics.leading(); qreal height = 0; textLayout.setCacheEnabled(true); textLayout.beginLayout(); -while (1) { +while (true) { QTextLine line = textLayout.createLine(); if (!line.isValid()) break; @@ -96,4 +50,41 @@ textLayout.draw(&painter, QPoint(0, 0)); } // Wrapper::wrapper1 +void Wrapper::elided() { + +QString content; + +//! [elided] +QPainter painter(this); +QFontMetrics fontMetrics = painter.fontMetrics(); + +int lineSpacing = fontMetrics.lineSpacing(); +int y = 0; + +QTextLayout textLayout(content, painter.font()); +textLayout.beginLayout(); +while (true) { + QTextLine line = textLayout.createLine(); + + if (!line.isValid()) + break; + + line.setLineWidth(width()); + const int nextLineY = y + lineSpacing; + + if (height() >= nextLineY + lineSpacing) { + line.draw(&painter, QPoint(0, y)); + y = nextLineY; + } else { + const QString lastLine = content.mid(line.textStart()); + const QString elidedLastLine = fontMetrics.elidedText(lastLine, Qt::ElideRight, width()); + painter.drawText(QPoint(0, y + fontMetrics.ascent()), elidedLastLine); + line = textLayout.createLine(); + break; + } +} +textLayout.endLayout(); +//! [elided] +} + } // src_gui_text_qtextlayout |