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Diffstat (limited to 'examples/widgets/widgets/charactermap/characterwidget.cpp')
| -rw-r--r-- | examples/widgets/widgets/charactermap/characterwidget.cpp | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/examples/widgets/widgets/charactermap/characterwidget.cpp b/examples/widgets/widgets/charactermap/characterwidget.cpp deleted file mode 100644 index 422177ffa8..0000000000 --- a/examples/widgets/widgets/charactermap/characterwidget.cpp +++ /dev/null @@ -1,193 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "characterwidget.h" - -#include <QFontDatabase> -#include <QMouseEvent> -#include <QPainter> -#include <QToolTip> - -//! [0] -CharacterWidget::CharacterWidget(QWidget *parent) - : QWidget(parent) -{ - calculateSquareSize(); - setMouseTracking(true); -} -//! [0] - -//! [1] -void CharacterWidget::updateFont(const QFont &font) -{ - displayFont.setFamily(font.family()); - calculateSquareSize(); - adjustSize(); - update(); -} -//! [1] - -//! [2] -void CharacterWidget::updateSize(const QString &fontSize) -{ - displayFont.setPointSize(fontSize.toInt()); - calculateSquareSize(); - adjustSize(); - update(); -} -//! [2] - -void CharacterWidget::updateStyle(const QString &fontStyle) -{ - QFontDatabase fontDatabase; - const QFont::StyleStrategy oldStrategy = displayFont.styleStrategy(); - displayFont = fontDatabase.font(displayFont.family(), fontStyle, displayFont.pointSize()); - displayFont.setStyleStrategy(oldStrategy); - calculateSquareSize(); - adjustSize(); - update(); -} - -void CharacterWidget::updateFontMerging(bool enable) -{ - if (enable) - displayFont.setStyleStrategy(QFont::PreferDefault); - else - displayFont.setStyleStrategy(QFont::NoFontMerging); - adjustSize(); - update(); -} - -void CharacterWidget::calculateSquareSize() -{ - squareSize = qMax(16, 4 + QFontMetrics(displayFont, this).height()); -} - -//! [3] -QSize CharacterWidget::sizeHint() const -{ - return QSize(columns*squareSize, (65536 / columns) * squareSize); -} -//! [3] - -//! [4] -void CharacterWidget::mouseMoveEvent(QMouseEvent *event) -{ - QPoint widgetPosition = mapFromGlobal(event->globalPosition().toPoint()); - uint key = (widgetPosition.y() / squareSize) * columns + widgetPosition.x() / squareSize; - - QString text = QString::fromLatin1("<p>Character: <span style=\"font-size: 24pt; font-family: %1\">").arg(displayFont.family()) - + QChar(key) - + QString::fromLatin1("</span><p>Value: 0x") - + QString::number(key, 16); - QToolTip::showText(event->globalPosition().toPoint(), text, this); -} -//! [4] - -//! [5] -void CharacterWidget::mousePressEvent(QMouseEvent *event) -{ - if (event->button() == Qt::LeftButton) { - lastKey = (event->position().toPoint().y() / squareSize) * columns + event->position().toPoint().x() / squareSize; - if (QChar(lastKey).category() != QChar::Other_NotAssigned) - emit characterSelected(QString(QChar(lastKey))); - update(); - } - else - QWidget::mousePressEvent(event); -} -//! [5] - -//! [6] -void CharacterWidget::paintEvent(QPaintEvent *event) -{ - QPainter painter(this); - painter.fillRect(event->rect(), QBrush(Qt::white)); - painter.setFont(displayFont); -//! [6] - -//! [7] - QRect redrawRect = event->rect(); - int beginRow = redrawRect.top() / squareSize; - int endRow = redrawRect.bottom() / squareSize; - int beginColumn = redrawRect.left() / squareSize; - int endColumn = redrawRect.right() / squareSize; -//! [7] - -//! [8] - painter.setPen(QPen(Qt::gray)); - for (int row = beginRow; row <= endRow; ++row) { - for (int column = beginColumn; column <= endColumn; ++column) { - painter.drawRect(column * squareSize, row * squareSize, squareSize, squareSize); - } -//! [8] //! [9] - } -//! [9] - -//! [10] - QFontMetrics fontMetrics(displayFont); - painter.setPen(QPen(Qt::black)); - for (int row = beginRow; row <= endRow; ++row) { - for (int column = beginColumn; column <= endColumn; ++column) { - int key = row * columns + column; - painter.setClipRect(column * squareSize, row * squareSize, squareSize, squareSize); - - if (key == lastKey) - painter.fillRect(column * squareSize + 1, row * squareSize + 1, - squareSize, squareSize, QBrush(Qt::red)); - - painter.drawText(column * squareSize + (squareSize / 2) - - fontMetrics.horizontalAdvance(QChar(key)) / 2, - row * squareSize + 4 + fontMetrics.ascent(), - QString(QChar(key))); - } - } -} -//! [10] |