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-rw-r--r--examples/widgets/painting/composition/composition.cpp164
1 files changed, 15 insertions, 149 deletions
diff --git a/examples/widgets/painting/composition/composition.cpp b/examples/widgets/painting/composition/composition.cpp
index a220fb42fa..b4fb4fa3f7 100644
--- a/examples/widgets/painting/composition/composition.cpp
+++ b/examples/widgets/painting/composition/composition.cpp
@@ -1,52 +1,5 @@
-/****************************************************************************
-**
-** 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."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "composition.h"
#include <QBoxLayout>
@@ -57,11 +10,6 @@
#include <QMouseEvent>
#include <qmath.h>
-#if QT_CONFIG(opengl)
-#include <QOpenGLFunctions>
-#include <QOpenGLWindow>
-#endif
-
const int animationInterval = 15; // update every 16 ms = ~60FPS
CompositionWidget::CompositionWidget(QWidget *parent)
@@ -141,12 +89,6 @@ CompositionWidget::CompositionWidget(QWidget *parent)
QPushButton *showSourceButton = new QPushButton(mainGroup);
showSourceButton->setText(tr("Show Source"));
-#if QT_CONFIG(opengl)
- QPushButton *enableOpenGLButton = new QPushButton(mainGroup);
- enableOpenGLButton->setText(tr("Use OpenGL"));
- enableOpenGLButton->setCheckable(true);
- enableOpenGLButton->setChecked(view->usesOpenGL());
-#endif
QPushButton *whatsThisButton = new QPushButton(mainGroup);
whatsThisButton->setText(tr("What's This?"));
whatsThisButton->setCheckable(true);
@@ -168,9 +110,6 @@ CompositionWidget::CompositionWidget(QWidget *parent)
mainGroupLayout->addWidget(animateButton);
mainGroupLayout->addWidget(whatsThisButton);
mainGroupLayout->addWidget(showSourceButton);
-#if QT_CONFIG(opengl)
- mainGroupLayout->addWidget(enableOpenGLButton);
-#endif
QGridLayout *modesLayout = new QGridLayout(modesGroup);
modesLayout->addWidget(rbClear, 0, 0);
@@ -212,9 +151,6 @@ CompositionWidget::CompositionWidget(QWidget *parent)
connect(whatsThisButton, &QAbstractButton::clicked, view, &ArthurFrame::setDescriptionEnabled);
connect(view, &ArthurFrame::descriptionEnabledChanged, whatsThisButton, &QAbstractButton::setChecked);
connect(showSourceButton, &QAbstractButton::clicked, view, &ArthurFrame::showSource);
-#if QT_CONFIG(opengl)
- connect(enableOpenGLButton, &QAbstractButton::clicked, view, &ArthurFrame::enableOpenGL);
-#endif
connect(animateButton, &QAbstractButton::toggled, view, &CompositionRenderer::setAnimationEnabled);
circleColorSlider->setValue(270);
@@ -264,9 +200,6 @@ CompositionRenderer::CompositionRenderer(QWidget *parent)
m_circle_pos = QPoint(200, 100);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
-#if QT_CONFIG(opengl)
- m_pbuffer_size = 1024;
-#endif
}
CompositionRenderer::~CompositionRenderer()
@@ -359,86 +292,25 @@ void CompositionRenderer::drawSource(QPainter &p)
void CompositionRenderer::paint(QPainter *painter)
{
-#if QT_CONFIG(opengl)
- if (usesOpenGL() && glWindow()->isValid()) {
-
- if (!m_blitter.isCreated())
- m_blitter.create();
-
- int new_pbuf_size = m_pbuffer_size;
- while (size().width() > new_pbuf_size || size().height() > new_pbuf_size)
- new_pbuf_size *= 2;
-
- while (size().width() < new_pbuf_size/2 && size().height() < new_pbuf_size/2)
- new_pbuf_size /= 2;
-
- if (!m_fbo || new_pbuf_size != m_pbuffer_size) {
- m_fbo.reset(new QFboPaintDevice(QSize(new_pbuf_size, new_pbuf_size), false, false));
- m_pbuffer_size = new_pbuf_size;
- }
-
- if (size() != m_previous_size) {
- m_previous_size = size();
- QPainter p(m_fbo.get());
- p.setCompositionMode(QPainter::CompositionMode_Source);
- p.fillRect(QRect(QPoint(0, 0), size()), Qt::transparent);
- p.setCompositionMode(QPainter::CompositionMode_SourceOver);
- drawBase(p);
- p.end();
- m_base_tex = m_fbo->takeTexture();
- }
-
- painter->beginNativePainting();
- {
- QPainter p(m_fbo.get());
- p.beginNativePainting();
- m_blitter.bind();
- const QRect targetRect(QPoint(0, 0), m_fbo->size());
- const QMatrix4x4 target = QOpenGLTextureBlitter::targetTransform(targetRect, QRect(QPoint(0, 0), m_fbo->size()));
- m_blitter.blit(m_base_tex, target, QOpenGLTextureBlitter::OriginBottomLeft);
- m_blitter.release();
- p.endNativePainting();
- drawSource(p);
- p.end();
- m_compositing_tex = m_fbo->takeTexture();
- }
- painter->endNativePainting();
-
- painter->beginNativePainting();
- auto *funcs = QOpenGLContext::currentContext()->functions();
- funcs->glEnable(GL_BLEND);
- funcs->glBlendEquation(GL_FUNC_ADD);
- funcs->glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
- m_blitter.bind();
- const QRect targetRect(QPoint(0, 0), m_fbo->size());
- const QMatrix4x4 target = QOpenGLTextureBlitter::targetTransform(targetRect, QRect(QPoint(0, 0), size()));
- m_blitter.blit(m_compositing_tex, target, QOpenGLTextureBlitter::OriginBottomLeft);
- m_blitter.release();
- painter->endNativePainting();
- } else
-#endif
- {
- // using a QImage
- if (m_buffer.size() != size()) {
- m_buffer = QImage(size(), QImage::Format_ARGB32_Premultiplied);
- m_base_buffer = QImage(size(), QImage::Format_ARGB32_Premultiplied);
+ if (m_buffer.size() != size()) {
+ m_buffer = QImage(size(), QImage::Format_ARGB32_Premultiplied);
+ m_base_buffer = QImage(size(), QImage::Format_ARGB32_Premultiplied);
- m_base_buffer.fill(0);
+ m_base_buffer.fill(0);
- QPainter p(&m_base_buffer);
+ QPainter p(&m_base_buffer);
- drawBase(p);
- }
-
- memcpy(m_buffer.bits(), m_base_buffer.bits(), m_buffer.sizeInBytes());
+ drawBase(p);
+ }
- {
- QPainter p(&m_buffer);
- drawSource(p);
- }
+ memcpy(m_buffer.bits(), m_base_buffer.bits(), m_buffer.sizeInBytes());
- painter->drawImage(0, 0, m_buffer);
+ {
+ QPainter p(&m_buffer);
+ drawSource(p);
}
+
+ painter->drawImage(0, 0, m_buffer);
}
void CompositionRenderer::mousePressEvent(QMouseEvent *e)
@@ -486,12 +358,6 @@ void CompositionRenderer::setCirclePos(const QPointF &pos)
const QRect oldRect = rectangle_around(m_circle_pos).toAlignedRect();
m_circle_pos = pos;
const QRect newRect = rectangle_around(m_circle_pos).toAlignedRect();
-#if QT_CONFIG(opengl)
- if (usesOpenGL()) {
- update();
- return;
- }
-#endif
update(oldRect | newRect);
}
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