2f33e030b8
- Replaced the usages of deprecated APIs by corresponding
alternatives in the library code and documentation.
- Modified the tests to make them build when deprecated APIs disabled:
* Made the the parts of the tests testing the deprecated APIs to
be compiled conditionally, only when the corresponding methods are
enabled.
* If the test-case tests only the deprecated API, but not the
corresponding replacement, added tests for the replacement.
Change-Id: Ic38245015377fc0c8127eb5458c184ffd4b450f1
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
294 lines
8.1 KiB
C++
294 lines
8.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "bubble.h"
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#include "qtlogo.h"
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#include "glwidget.h"
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#include <QMouseEvent>
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#include <QRandomGenerator>
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#include <QTime>
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#include <math.h>
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#include <stdlib.h>
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#ifndef GL_MULTISAMPLE
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#define GL_MULTISAMPLE 0x809D
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#endif
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//! [0]
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GLWidget::GLWidget(QWidget *parent)
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: QGLWidget(QGLFormat(QGL::SampleBuffers), parent)
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{
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QTime midnight(0, 0, 0);
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logo = 0;
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xRot = 0;
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yRot = 0;
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zRot = 0;
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qtGreen = QColor::fromCmykF(0.40, 0.0, 1.0, 0.0);
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qtPurple = QColor::fromCmykF(0.39, 0.39, 0.0, 0.0);
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animationTimer.setSingleShot(false);
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connect(&animationTimer, SIGNAL(timeout()), this, SLOT(animate()));
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animationTimer.start(25);
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setAutoFillBackground(false);
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setMinimumSize(200, 200);
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setWindowTitle(tr("Overpainting a Scene"));
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}
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//! [0]
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//! [1]
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GLWidget::~GLWidget()
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{
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}
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//! [1]
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static void qNormalizeAngle(int &angle)
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{
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while (angle < 0)
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angle += 360 * 16;
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while (angle > 360 * 16)
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angle -= 360 * 16;
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}
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void GLWidget::setXRotation(int angle)
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{
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qNormalizeAngle(angle);
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if (angle != xRot)
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xRot = angle;
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}
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void GLWidget::setYRotation(int angle)
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{
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qNormalizeAngle(angle);
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if (angle != yRot)
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yRot = angle;
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}
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void GLWidget::setZRotation(int angle)
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{
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qNormalizeAngle(angle);
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if (angle != zRot)
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zRot = angle;
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}
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//! [2]
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void GLWidget::initializeGL()
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{
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initializeOpenGLFunctions();
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glEnable(GL_MULTISAMPLE);
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logo = new QtLogo(this);
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logo->setColor(qtGreen.darker());
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}
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//! [2]
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void GLWidget::mousePressEvent(QMouseEvent *event)
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{
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lastPos = event->pos();
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}
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void GLWidget::mouseMoveEvent(QMouseEvent *event)
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{
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int dx = event->x() - lastPos.x();
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int dy = event->y() - lastPos.y();
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if (event->buttons() & Qt::LeftButton) {
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setXRotation(xRot + 8 * dy);
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setYRotation(yRot + 8 * dx);
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} else if (event->buttons() & Qt::RightButton) {
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setXRotation(xRot + 8 * dy);
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setZRotation(zRot + 8 * dx);
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}
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lastPos = event->pos();
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}
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void GLWidget::paintEvent(QPaintEvent *event)
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{
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makeCurrent();
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//! [4]
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glMatrixMode(GL_MODELVIEW);
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glPushMatrix();
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//! [4]
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//! [6]
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qglClearColor(qtPurple.darker());
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glShadeModel(GL_SMOOTH);
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_CULL_FACE);
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glEnable(GL_LIGHTING);
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glEnable(GL_LIGHT0);
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glEnable(GL_MULTISAMPLE);
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static GLfloat lightPosition[4] = { 0.5, 5.0, 7.0, 1.0 };
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glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
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qreal pixelRatio = devicePixelRatio();
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setupViewport(width() * pixelRatio, height() * pixelRatio);
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//! [6]
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//! [7]
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glLoadIdentity();
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glTranslatef(0.0, 0.0, -10.0);
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glRotatef(xRot / 16.0, 1.0, 0.0, 0.0);
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glRotatef(yRot / 16.0, 0.0, 1.0, 0.0);
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glRotatef(zRot / 16.0, 0.0, 0.0, 1.0);
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logo->draw(static_cast<QOpenGLFunctions_1_1 *>(this));
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//! [7]
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//! [8]
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glShadeModel(GL_FLAT);
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glDisable(GL_CULL_FACE);
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glDisable(GL_DEPTH_TEST);
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glDisable(GL_LIGHTING);
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glMatrixMode(GL_MODELVIEW);
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glPopMatrix();
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//! [8]
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//! [10]
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing);
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for (Bubble *bubble : qAsConst(bubbles)) {
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if (bubble->rect().intersects(event->rect()))
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bubble->drawBubble(&painter);
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}
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drawInstructions(&painter);
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painter.end();
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}
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//! [10]
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//! [11]
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void GLWidget::resizeGL(int width, int height)
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{
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qreal pixelRatio = devicePixelRatio();
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setupViewport(width*pixelRatio, height*pixelRatio);
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}
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//! [11]
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//! [12]
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void GLWidget::showEvent(QShowEvent *event)
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{
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Q_UNUSED(event);
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createBubbles(20 - bubbles.count());
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}
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//! [12]
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QSize GLWidget::sizeHint() const
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{
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return QSize(400, 400);
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}
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void GLWidget::createBubbles(int number)
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{
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for (int i = 0; i < number; ++i) {
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QPointF position(width()*(0.1 + QRandomGenerator::global()->bounded(0.8)),
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height()*(0.1 + QRandomGenerator::global()->bounded(0.8)));
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qreal radius = qMin(width(), height())*(0.0125 + QRandomGenerator::global()->bounded(0.0875));
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QPointF velocity(width()*0.0125*(-0.5 + QRandomGenerator::global()->bounded(1.0)),
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height()*0.0125*(-0.5 + QRandomGenerator::global()->bounded(1.0)));
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bubbles.append(new Bubble(position, radius, velocity));
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}
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}
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//! [13]
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void GLWidget::animate()
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{
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for (Bubble *bubble : qAsConst(bubbles))
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bubble->move(rect());
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update();
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}
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//! [13]
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//! [14]
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void GLWidget::setupViewport(int width, int height)
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{
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int side = qMin(width, height);
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glViewport((width - side) / 2, (height - side) / 2, side, side);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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#ifdef QT_OPENGL_ES
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glOrthof(-0.5, +0.5, -0.5, 0.5, 4.0, 15.0);
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#else
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glOrtho(-0.5, +0.5, -0.5, 0.5, 4.0, 15.0);
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#endif
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glMatrixMode(GL_MODELVIEW);
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}
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//! [14]
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//! [15]
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void GLWidget::drawInstructions(QPainter *painter)
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{
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QString text = tr("Click and drag with the left mouse button "
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"to rotate the Qt logo.");
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QFontMetrics metrics = QFontMetrics(font());
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int border = qMax(4, metrics.leading());
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QRect rect = metrics.boundingRect(0, 0, width() - 2*border, int(height()*0.125),
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Qt::AlignCenter | Qt::TextWordWrap, text);
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painter->setRenderHint(QPainter::TextAntialiasing);
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painter->fillRect(QRect(0, 0, width(), rect.height() + 2*border),
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QColor(0, 0, 0, 127));
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painter->setPen(Qt::white);
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painter->fillRect(QRect(0, 0, width(), rect.height() + 2*border),
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QColor(0, 0, 0, 127));
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painter->drawText((width() - rect.width())/2, border,
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rect.width(), rect.height(),
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Qt::AlignCenter | Qt::TextWordWrap, text);
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}
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//! [15]
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