diff options
Diffstat (limited to 'sources/pyside2/doc/codesnippets/doc/src/snippets/textdocument-selections/mainwindow.cpp')
-rw-r--r-- | sources/pyside2/doc/codesnippets/doc/src/snippets/textdocument-selections/mainwindow.cpp | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/sources/pyside2/doc/codesnippets/doc/src/snippets/textdocument-selections/mainwindow.cpp b/sources/pyside2/doc/codesnippets/doc/src/snippets/textdocument-selections/mainwindow.cpp new file mode 100644 index 000000000..bde20edda --- /dev/null +++ b/sources/pyside2/doc/codesnippets/doc/src/snippets/textdocument-selections/mainwindow.cpp @@ -0,0 +1,213 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of PySide2. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtWidgets> + +#include "mainwindow.h" + +MainWindow::MainWindow() +{ + QMenu *fileMenu = new QMenu(tr("&File")); + + fileMenu->addAction(tr("&Open..."), this, SLOT(openFile()), + QKeySequence(tr("Ctrl+O", "File|Open"))); + + QAction *quitAction = fileMenu->addAction(tr("E&xit"), this, SLOT(close())); + quitAction->setShortcut(tr("Ctrl+Q")); + + QMenu *editMenu = new QMenu(tr("&Edit")); + + cutAction = editMenu->addAction(tr("Cu&t"), this, SLOT(cutSelection())); + cutAction->setShortcut(tr("Ctrl+X")); + cutAction->setEnabled(false); + + copyAction = editMenu->addAction(tr("&Copy"), this, SLOT(copySelection())); + copyAction->setShortcut(tr("Ctrl+C")); + copyAction->setEnabled(false); + + pasteAction = editMenu->addAction(tr("&Paste"), this, SLOT(pasteSelection())); + pasteAction->setShortcut(tr("Ctrl+V")); + pasteAction->setEnabled(false); + + QMenu *selectMenu = new QMenu(tr("&Select")); + selectMenu->addAction(tr("&Word"), this, SLOT(selectWord())); + selectMenu->addAction(tr("&Line"), this, SLOT(selectLine())); + selectMenu->addAction(tr("&Block"), this, SLOT(selectBlock())); + selectMenu->addAction(tr("&Frame"), this, SLOT(selectFrame())); + + menuBar()->addMenu(fileMenu); + menuBar()->addMenu(editMenu); + menuBar()->addMenu(selectMenu); + + editor = new QTextEdit(this); + document = new QTextDocument(this); + editor->setDocument(document); + + connect(editor, SIGNAL(selectionChanged()), this, SLOT(updateMenus())); + + setCentralWidget(editor); + setWindowTitle(tr("Text Document Writer")); +} + +void MainWindow::openFile() +{ + QString fileName = QFileDialog::getOpenFileName(this, + tr("Open file"), currentFile, "HTML files (*.html);;Text files (*.txt)"); + + if (!fileName.isEmpty()) { + QFileInfo info(fileName); + if (info.completeSuffix() == "html") { + QFile file(fileName); + + if (file.open(QFile::ReadOnly)) { + editor->setHtml(QString(file.readAll())); + file.close(); + currentFile = fileName; + } + } else if (info.completeSuffix() == "txt") { + QFile file(fileName); + + if (file.open(QFile::ReadOnly)) { + editor->setPlainText(file.readAll()); + file.close(); + currentFile = fileName; + } + } + } +} + +void MainWindow::cutSelection() +{ + QTextCursor cursor = editor->textCursor(); + if (cursor.hasSelection()) { + selection = cursor.selection(); + cursor.removeSelectedText(); + } +} + +void MainWindow::copySelection() +{ + QTextCursor cursor = editor->textCursor(); + if (cursor.hasSelection()) { + selection = cursor.selection(); + cursor.clearSelection(); + } +} + +void MainWindow::pasteSelection() +{ + QTextCursor cursor = editor->textCursor(); + cursor.insertFragment(selection); +} + +void MainWindow::selectWord() +{ + QTextCursor cursor = editor->textCursor(); + QTextBlock block = cursor.block(); + +//! [0] + cursor.beginEditBlock(); +//! [1] + cursor.movePosition(QTextCursor::StartOfWord); + cursor.movePosition(QTextCursor::EndOfWord, QTextCursor::KeepAnchor); +//! [1] + cursor.endEditBlock(); +//! [0] + + editor->setTextCursor(cursor); +} + +void MainWindow::selectLine() +{ + QTextCursor cursor = editor->textCursor(); + QTextBlock block = cursor.block(); + + cursor.beginEditBlock(); + cursor.movePosition(QTextCursor::StartOfLine); + cursor.movePosition(QTextCursor::EndOfLine, QTextCursor::KeepAnchor); + cursor.endEditBlock(); + + editor->setTextCursor(cursor); +} + +void MainWindow::selectBlock() +{ + QTextCursor cursor = editor->textCursor(); + QTextBlock block = cursor.block(); + + cursor.beginEditBlock(); + cursor.movePosition(QTextCursor::StartOfBlock); + cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor); + cursor.endEditBlock(); + + editor->setTextCursor(cursor); +} + +void MainWindow::selectFrame() +{ + QTextCursor cursor = editor->textCursor(); + QTextFrame *frame = cursor.currentFrame(); + + cursor.beginEditBlock(); + cursor.setPosition(frame->firstPosition()); + cursor.setPosition(frame->lastPosition(), QTextCursor::KeepAnchor); + cursor.endEditBlock(); + + editor->setTextCursor(cursor); +} + +void MainWindow::updateMenus() +{ + QTextCursor cursor = editor->textCursor(); + cutAction->setEnabled(cursor.hasSelection()); + copyAction->setEnabled(cursor.hasSelection()); + + pasteAction->setEnabled(!selection.isEmpty()); +} |