1 files changed, 87 insertions, 0 deletions
diff --git a/sources/pyside2/doc/codesnippets/doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp b/sources/pyside2/doc/codesnippets/doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp
new file mode 100644
index 000000000..7a04f492a
--- /dev/null
+++ b/sources/pyside2/doc/codesnippets/doc/src/snippets/code/src_gui_effects_qgraphicseffect.cpp
@@ -0,0 +1,87 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the documentation of PySide2.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//! [0]
+def draw(self, painter):
+    # Fully opaque draw directly without going through a pixmap.
+    if qFuzzyCompare(self.opacity, 1):
+        drawSource(painter)
+        return
+    # ...
+//! [0]
+
+//! [1]
+def draw(self, painter):
+    # ...
+    offset = QPoint()
+    if self.sourceIsPixmap():
+        # No point in drawing in device coordinates (pixmap will be scaled anyways).
+        pixmap = sourcePixmap(Qt.LogicalCoordinates, offset)
+        ...
+        painter.drawPixmap(offset, pixmap)
+    else:
+        # Draw pixmap in device coordinates to avoid pixmap scaling
+        pixmap = sourcePixmap(Qt.DeviceCoordinates, offset)
+        painter.setWorldTransform(QTransform())
+        # ...
+        painter.drawPixmap(offset, pixmap)
+    # ...
+//! [1]
+
+//! [2]
+# ...
+alphaGradient = QLinearGradient(rect.topLeft(), rect.bottomLeft())
+alphaGradient.setColorAt(0.0, Qt.transparent)
+alphaGradient.setColorAt(0.5, Qt.black)
+alphaGradient.setColorAt(1.0, Qt.transparent)
+effect = QGraphicsOpacityEffect()
+effect.setOpacityMask(alphaGradient)
+# ...
+//! [2]