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Diffstat (limited to 'examples/widgets/tools/undo/document.cpp')
-rw-r--r-- | examples/widgets/tools/undo/document.cpp | 448 |
1 files changed, 0 insertions, 448 deletions
diff --git a/examples/widgets/tools/undo/document.cpp b/examples/widgets/tools/undo/document.cpp deleted file mode 100644 index 339a63abae..0000000000 --- a/examples/widgets/tools/undo/document.cpp +++ /dev/null @@ -1,448 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the demonstration applications 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 "document.h" -#include "commands.h" - -#include <QPainter> -#include <QPaintEvent> -#include <QTextStream> -#include <QUndoStack> - -static constexpr int resizeHandleWidth = 6; - -/****************************************************************************** -** Shape -*/ - -const QSize Shape::minSize(80, 50); - -Shape::Shape(Type type, const QColor &color, const QRect &rect) - : m_type(type), m_rect(rect), m_color(color) -{ -} - -Shape::Type Shape::type() const -{ - return m_type; -} - -QRect Shape::rect() const -{ - return m_rect; -} - -QColor Shape::color() const -{ - return m_color; -} - -QString Shape::name() const -{ - return m_name; -} - -QRect Shape::resizeHandle() const -{ - QPoint br = m_rect.bottomRight(); - return QRect(br - QPoint(resizeHandleWidth, resizeHandleWidth), br); -} - -QString Shape::typeToString(Type type) -{ - switch (type) { - case Rectangle: - return QLatin1String("Rectangle"); - case Circle: - return QLatin1String("Circle"); - case Triangle: - return QLatin1String("Triangle"); - } - - return QString(); -} - -Shape::Type Shape::stringToType(const QString &s, bool *ok) -{ - if (ok != nullptr) - *ok = true; - - if (s == QLatin1String("Rectangle")) - return Rectangle; - if (s == QLatin1String("Circle")) - return Circle; - if (s == QLatin1String("Triangle")) - return Triangle; - - if (ok != nullptr) - *ok = false; - return Rectangle; -} - -/****************************************************************************** -** Document -*/ - -Document::Document(QWidget *parent) - : QWidget(parent), m_undoStack(new QUndoStack(this)) -{ - setAutoFillBackground(true); - setBackgroundRole(QPalette::Base); - - QPalette pal = palette(); - pal.setBrush(QPalette::Base, QPixmap(":/icons/background.png")); - pal.setColor(QPalette::HighlightedText, Qt::red); - setPalette(pal); -} - -QString Document::addShape(const Shape &shape) -{ - QString name = Shape::typeToString(shape.type()); - name = uniqueName(name); - - m_shapeList.append(shape); - m_shapeList[m_shapeList.count() - 1].m_name = name; - setCurrentShape(m_shapeList.count() - 1); - - return name; -} - -void Document::deleteShape(const QString &shapeName) -{ - int index = indexOf(shapeName); - if (index == -1) - return; - - update(m_shapeList.at(index).rect()); - - m_shapeList.removeAt(index); - - if (index <= m_currentIndex) { - m_currentIndex = -1; - if (index == m_shapeList.count()) - --index; - setCurrentShape(index); - } -} - -Shape Document::shape(const QString &shapeName) const -{ - int index = indexOf(shapeName); - if (index == -1) - return Shape(); - return m_shapeList.at(index); -} - -void Document::setShapeRect(const QString &shapeName, const QRect &rect) -{ - int index = indexOf(shapeName); - if (index == -1) - return; - - Shape &shape = m_shapeList[index]; - - update(shape.rect()); - update(rect); - - shape.m_rect = rect; -} - -void Document::setShapeColor(const QString &shapeName, const QColor &color) -{ - - int index = indexOf(shapeName); - if (index == -1) - return; - - Shape &shape = m_shapeList[index]; - shape.m_color = color; - - update(shape.rect()); -} - -QUndoStack *Document::undoStack() const -{ - return m_undoStack; -} - -bool Document::load(QTextStream &stream) -{ - m_shapeList.clear(); - - while (!stream.atEnd()) { - QString shapeType, shapeName, colorName; - int left, top, width, height; - stream >> shapeType >> shapeName >> colorName >> left >> top >> width >> height; - if (stream.status() != QTextStream::Ok) - return false; - bool ok; - Shape::Type type = Shape::stringToType(shapeType, &ok); - if (!ok) - return false; - QColor color(colorName); - if (!color.isValid()) - return false; - - Shape shape(type); - shape.m_name = shapeName; - shape.m_color = color; - shape.m_rect = QRect(left, top, width, height); - - m_shapeList.append(shape); - } - - m_currentIndex = m_shapeList.isEmpty() ? -1 : 0; - - return true; -} - -void Document::save(QTextStream &stream) -{ - for (int i = 0; i < m_shapeList.count(); ++i) { - const Shape &shape = m_shapeList.at(i); - QRect r = shape.rect(); - stream << Shape::typeToString(shape.type()) << QLatin1Char(' ') - << shape.name() << QLatin1Char(' ') - << shape.color().name() << QLatin1Char(' ') - << r.left() << QLatin1Char(' ') - << r.top() << QLatin1Char(' ') - << r.width() << QLatin1Char(' ') - << r.height(); - if (i != m_shapeList.count() - 1) - stream << QLatin1Char('\n'); - } - m_undoStack->setClean(); -} - -QString Document::fileName() const -{ - return m_fileName; -} - -void Document::setFileName(const QString &fileName) -{ - m_fileName = fileName; -} - -int Document::indexAt(const QPoint &pos) const -{ - for (int i = m_shapeList.count() - 1; i >= 0; --i) { - if (m_shapeList.at(i).rect().contains(pos)) - return i; - } - return -1; -} - -void Document::mousePressEvent(QMouseEvent *event) -{ - event->accept(); - int index = indexAt(event->position().toPoint());; - if (index != -1) { - setCurrentShape(index); - - const Shape &shape = m_shapeList.at(index); - m_resizeHandlePressed = shape.resizeHandle().contains(event->position().toPoint()); - - if (m_resizeHandlePressed) - m_mousePressOffset = shape.rect().bottomRight() - event->position().toPoint(); - else - m_mousePressOffset = event->position().toPoint() - shape.rect().topLeft(); - } - m_mousePressIndex = index; -} - -void Document::mouseReleaseEvent(QMouseEvent *event) -{ - event->accept(); - m_mousePressIndex = -1; -} - -void Document::mouseMoveEvent(QMouseEvent *event) -{ - event->accept(); - - if (m_mousePressIndex == -1) - return; - - const Shape &shape = m_shapeList.at(m_mousePressIndex); - - QRect rect; - if (m_resizeHandlePressed) { - rect = QRect(shape.rect().topLeft(), event->position().toPoint() + m_mousePressOffset); - } else { - rect = shape.rect(); - rect.moveTopLeft(event->position().toPoint() - m_mousePressOffset); - } - - QSize size = rect.size().expandedTo(Shape::minSize); - rect.setSize(size); - - m_undoStack->push(new SetShapeRectCommand(this, shape.name(), rect)); -} - -static QGradient gradient(const QColor &color, const QRect &rect) -{ - QColor c = color; - c.setAlpha(160); - QLinearGradient result(rect.topLeft(), rect.bottomRight()); - result.setColorAt(0, c.darker(150)); - result.setColorAt(0.5, c.lighter(200)); - result.setColorAt(1, c.darker(150)); - return result; -} - -static QPolygon triangle(const QRect &rect) -{ - QPolygon result(3); - result.setPoint(0, rect.center().x(), rect.top()); - result.setPoint(1, rect.right(), rect.bottom()); - result.setPoint(2, rect.left(), rect.bottom()); - return result; -} - -void Document::paintEvent(QPaintEvent *event) -{ - QRegion paintRegion = event->region(); - QPainter painter(this); - QPalette pal = palette(); - - for (int i = 0; i < m_shapeList.count(); ++i) { - const Shape &shape = m_shapeList.at(i); - - if (!paintRegion.contains(shape.rect())) - continue; - - QPen pen = pal.text().color(); - pen.setWidth(i == m_currentIndex ? 2 : 1); - painter.setPen(pen); - painter.setBrush(gradient(shape.color(), shape.rect())); - - QRect rect = shape.rect(); - rect.adjust(1, 1, -resizeHandleWidth/2, -resizeHandleWidth/2); - - // paint the shape - switch (shape.type()) { - case Shape::Rectangle: - painter.drawRect(rect); - break; - case Shape::Circle: - painter.setRenderHint(QPainter::Antialiasing); - painter.drawEllipse(rect); - painter.setRenderHint(QPainter::Antialiasing, false); - break; - case Shape::Triangle: - painter.setRenderHint(QPainter::Antialiasing); - painter.drawPolygon(triangle(rect)); - painter.setRenderHint(QPainter::Antialiasing, false); - break; - } - - // paint the resize handle - painter.setPen(pal.text().color()); - painter.setBrush(Qt::white); - painter.drawRect(shape.resizeHandle().adjusted(0, 0, -1, -1)); - - // paint the shape name - painter.setBrush(pal.text()); - if (shape.type() == Shape::Triangle) - rect.adjust(0, rect.height()/2, 0, 0); - painter.drawText(rect, Qt::AlignCenter, shape.name()); - } -} - -void Document::setCurrentShape(int index) -{ - QString currentName; - - if (m_currentIndex != -1) - update(m_shapeList.at(m_currentIndex).rect()); - - m_currentIndex = index; - - if (m_currentIndex != -1) { - const Shape ¤t = m_shapeList.at(m_currentIndex); - update(current.rect()); - currentName = current.name(); - } - - emit currentShapeChanged(currentName); -} - -int Document::indexOf(const QString &shapeName) const -{ - for (int i = 0; i < m_shapeList.count(); ++i) { - if (m_shapeList.at(i).name() == shapeName) - return i; - } - return -1; -} - -QString Document::uniqueName(const QString &name) const -{ - QString unique; - - for (int i = 0; ; ++i) { - unique = name; - if (i > 0) - unique += QString::number(i); - if (indexOf(unique) == -1) - break; - } - - return unique; -} - -QString Document::currentShapeName() const -{ - if (m_currentIndex == -1) - return QString(); - return m_shapeList.at(m_currentIndex).name(); -} - |