diff options
Diffstat (limited to 'doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp')
| -rw-r--r-- | doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp b/doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp deleted file mode 100644 index 3e0b0b64ee..0000000000 --- a/doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp +++ /dev/null @@ -1,83 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 Nokia Corporation and its Subsidiary(-ies) 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -//! [0] -MyGraphicsOpacityEffect::draw(QPainter *painter) -{ - // Fully opaque; draw directly without going through a pixmap. - if (qFuzzyCompare(m_opacity, 1)) { - drawSource(painter); - return; - } - ... -} -//! [0] - -//! [1] -MyGraphicsEffect::draw(QPainter *painter) -{ - ... - QPoint offset; - if (sourceIsPixmap()) { - // No point in drawing in device coordinates (pixmap will be scaled anyways). - const QPixmap pixmap = sourcePixmap(Qt::LogicalCoordinates, &offset); - ... - painter->drawPixmap(offset, pixmap); - } else { - // Draw pixmap in device coordinates to avoid pixmap scaling; - const QPixmap pixmap = sourcePixmap(Qt::DeviceCoordinates, &offset); - painter->setWorldTransform(QTransform()); - ... - painter->drawPixmap(offset, pixmap); - } - ... -} -//! [1] - -//! [2] -... -QLinearGradient alphaGradient(rect.topLeft(), rect.bottomLeft()); -alphaGradient.setColorAt(0.0, Qt::transparent); -alphaGradient.setColorAt(0.5, Qt::black); -alphaGradient.setColorAt(1.0, Qt::transparent); -QGraphicsOpacityEffect *effect = new QGraphicsOpacityEffect; -effect->setOpacityMask(alphaGradient); -... -//! [2] |