diff options
Diffstat (limited to 'examples/widgets/painting/composition/composition.cpp')
-rw-r--r-- | examples/widgets/painting/composition/composition.cpp | 164 |
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); } |