mirror of
https://github.com/crystalidea/qt6windows7.git
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248 lines
7.2 KiB
C++
248 lines
7.2 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "renderarea.h"
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#include "window.h"
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#include <QtWidgets>
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#include <qmath.h>
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//! [1]
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Window::Window()
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{
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QPainterPath rectPath;
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rectPath.moveTo(20.0, 30.0);
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rectPath.lineTo(80.0, 30.0);
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rectPath.lineTo(80.0, 70.0);
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rectPath.lineTo(20.0, 70.0);
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rectPath.closeSubpath();
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//! [1]
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//! [2]
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QPainterPath roundRectPath;
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roundRectPath.moveTo(80.0, 35.0);
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roundRectPath.arcTo(70.0, 30.0, 10.0, 10.0, 0.0, 90.0);
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roundRectPath.lineTo(25.0, 30.0);
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roundRectPath.arcTo(20.0, 30.0, 10.0, 10.0, 90.0, 90.0);
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roundRectPath.lineTo(20.0, 65.0);
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roundRectPath.arcTo(20.0, 60.0, 10.0, 10.0, 180.0, 90.0);
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roundRectPath.lineTo(75.0, 70.0);
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roundRectPath.arcTo(70.0, 60.0, 10.0, 10.0, 270.0, 90.0);
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roundRectPath.closeSubpath();
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//! [2]
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//! [3]
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QPainterPath ellipsePath;
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ellipsePath.moveTo(80.0, 50.0);
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ellipsePath.arcTo(20.0, 30.0, 60.0, 40.0, 0.0, 360.0);
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//! [3]
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//! [4]
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QPainterPath piePath;
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piePath.moveTo(50.0, 50.0);
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piePath.arcTo(20.0, 30.0, 60.0, 40.0, 60.0, 240.0);
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piePath.closeSubpath();
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//! [4]
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//! [5]
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QPainterPath polygonPath;
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polygonPath.moveTo(10.0, 80.0);
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polygonPath.lineTo(20.0, 10.0);
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polygonPath.lineTo(80.0, 30.0);
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polygonPath.lineTo(90.0, 70.0);
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polygonPath.closeSubpath();
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//! [5]
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//! [6]
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QPainterPath groupPath;
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groupPath.moveTo(60.0, 40.0);
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groupPath.arcTo(20.0, 20.0, 40.0, 40.0, 0.0, 360.0);
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groupPath.moveTo(40.0, 40.0);
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groupPath.lineTo(40.0, 80.0);
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groupPath.lineTo(80.0, 80.0);
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groupPath.lineTo(80.0, 40.0);
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groupPath.closeSubpath();
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//! [6]
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//! [7]
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QPainterPath textPath;
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QFont timesFont("Times", 50);
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timesFont.setStyleStrategy(QFont::ForceOutline);
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textPath.addText(10, 70, timesFont, tr("Qt"));
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//! [7]
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//! [8]
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QPainterPath bezierPath;
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bezierPath.moveTo(20, 30);
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bezierPath.cubicTo(80, 0, 50, 50, 80, 80);
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//! [8]
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//! [9]
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QPainterPath starPath;
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starPath.moveTo(90, 50);
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for (int i = 1; i < 5; ++i) {
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starPath.lineTo(50 + 40 * std::cos(0.8 * i * M_PI),
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50 + 40 * std::sin(0.8 * i * M_PI));
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}
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starPath.closeSubpath();
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//! [9]
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//! [10]
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renderAreas.push_back(new RenderArea(rectPath));
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renderAreas.push_back(new RenderArea(roundRectPath));
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renderAreas.push_back(new RenderArea(ellipsePath));
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renderAreas.push_back(new RenderArea(piePath));
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renderAreas.push_back(new RenderArea(polygonPath));
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renderAreas.push_back(new RenderArea(groupPath));
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renderAreas.push_back(new RenderArea(textPath));
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renderAreas.push_back(new RenderArea(bezierPath));
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renderAreas.push_back(new RenderArea(starPath));
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//! [10]
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//! [11]
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fillRuleComboBox = new QComboBox;
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fillRuleComboBox->addItem(tr("Odd Even"), Qt::OddEvenFill);
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fillRuleComboBox->addItem(tr("Winding"), Qt::WindingFill);
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fillRuleLabel = new QLabel(tr("Fill &Rule:"));
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fillRuleLabel->setBuddy(fillRuleComboBox);
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//! [11]
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//! [12]
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fillColor1ComboBox = new QComboBox;
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populateWithColors(fillColor1ComboBox);
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fillColor1ComboBox->setCurrentIndex(fillColor1ComboBox->findText("mediumslateblue"));
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fillColor2ComboBox = new QComboBox;
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populateWithColors(fillColor2ComboBox);
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fillColor2ComboBox->setCurrentIndex(fillColor2ComboBox->findText("cornsilk"));
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fillGradientLabel = new QLabel(tr("&Fill Gradient:"));
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fillGradientLabel->setBuddy(fillColor1ComboBox);
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fillToLabel = new QLabel(tr("to"));
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fillToLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
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penWidthSpinBox = new QSpinBox;
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penWidthSpinBox->setRange(0, 20);
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penWidthLabel = new QLabel(tr("&Pen Width:"));
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penWidthLabel->setBuddy(penWidthSpinBox);
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penColorComboBox = new QComboBox;
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populateWithColors(penColorComboBox);
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penColorComboBox->setCurrentIndex(penColorComboBox->findText("darkslateblue"));
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penColorLabel = new QLabel(tr("Pen &Color:"));
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penColorLabel->setBuddy(penColorComboBox);
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rotationAngleSpinBox = new QSpinBox;
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rotationAngleSpinBox->setRange(0, 359);
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rotationAngleSpinBox->setWrapping(true);
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rotationAngleSpinBox->setSuffix(QLatin1String("\xB0"));
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rotationAngleLabel = new QLabel(tr("&Rotation Angle:"));
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rotationAngleLabel->setBuddy(rotationAngleSpinBox);
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//! [12]
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//! [16]
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connect(fillRuleComboBox, &QComboBox::activated,
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this, &Window::fillRuleChanged);
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connect(fillColor1ComboBox, &QComboBox::activated,
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this, &Window::fillGradientChanged);
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connect(fillColor2ComboBox, &QComboBox::activated,
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this, &Window::fillGradientChanged);
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connect(penColorComboBox, &QComboBox::activated,
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this, &Window::penColorChanged);
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for (RenderArea *area : std::as_const(renderAreas)) {
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connect(penWidthSpinBox, &QSpinBox::valueChanged,
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area, &RenderArea::setPenWidth);
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connect(rotationAngleSpinBox, &QSpinBox::valueChanged,
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area, &RenderArea::setRotationAngle);
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}
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//! [16] //! [17]
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QGridLayout *topLayout = new QGridLayout;
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int i = 0;
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for (RenderArea *area : std::as_const(renderAreas)) {
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topLayout->addWidget(area, i / 3, i % 3);
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++i;
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}
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QGridLayout *mainLayout = new QGridLayout;
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mainLayout->addLayout(topLayout, 0, 0, 1, 4);
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mainLayout->addWidget(fillRuleLabel, 1, 0);
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mainLayout->addWidget(fillRuleComboBox, 1, 1, 1, 3);
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mainLayout->addWidget(fillGradientLabel, 2, 0);
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mainLayout->addWidget(fillColor1ComboBox, 2, 1);
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mainLayout->addWidget(fillToLabel, 2, 2);
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mainLayout->addWidget(fillColor2ComboBox, 2, 3);
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mainLayout->addWidget(penWidthLabel, 3, 0);
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mainLayout->addWidget(penWidthSpinBox, 3, 1, 1, 3);
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mainLayout->addWidget(penColorLabel, 4, 0);
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mainLayout->addWidget(penColorComboBox, 4, 1, 1, 3);
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mainLayout->addWidget(rotationAngleLabel, 5, 0);
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mainLayout->addWidget(rotationAngleSpinBox, 5, 1, 1, 3);
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setLayout(mainLayout);
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//! [17]
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//! [18]
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fillRuleChanged();
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fillGradientChanged();
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penColorChanged();
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penWidthSpinBox->setValue(2);
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setWindowTitle(tr("Painter Paths"));
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}
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//! [18]
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//! [19]
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void Window::fillRuleChanged()
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{
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Qt::FillRule rule = (Qt::FillRule)currentItemData(fillRuleComboBox).toInt();
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for (RenderArea *area : std::as_const(renderAreas))
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area->setFillRule(rule);
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}
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//! [19]
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//! [20]
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void Window::fillGradientChanged()
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{
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QColor color1 = qvariant_cast<QColor>(currentItemData(fillColor1ComboBox));
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QColor color2 = qvariant_cast<QColor>(currentItemData(fillColor2ComboBox));
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for (RenderArea *area : std::as_const(renderAreas))
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area->setFillGradient(color1, color2);
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}
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//! [20]
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//! [21]
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void Window::penColorChanged()
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{
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QColor color = qvariant_cast<QColor>(currentItemData(penColorComboBox));
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for (RenderArea *area : std::as_const(renderAreas))
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area->setPenColor(color);
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}
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//! [21]
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//! [22]
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void Window::populateWithColors(QComboBox *comboBox)
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{
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const QStringList colorNames = QColor::colorNames();
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for (const QString &name : colorNames)
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comboBox->addItem(name, QColor(name));
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}
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//! [22]
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//! [23]
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QVariant Window::currentItemData(QComboBox *comboBox)
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{
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return comboBox->itemData(comboBox->currentIndex());
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}
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//! [23]
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