| [2] | 1 | /****************************************************************************
|
|---|
| 2 | **
|
|---|
| [846] | 3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
|
|---|
| [561] | 4 | ** All rights reserved.
|
|---|
| 5 | ** Contact: Nokia Corporation ([email protected])
|
|---|
| [2] | 6 | **
|
|---|
| 7 | ** This file is part of the documentation of the Qt Toolkit.
|
|---|
| 8 | **
|
|---|
| [846] | 9 | ** $QT_BEGIN_LICENSE:FDL$
|
|---|
| [2] | 10 | ** Commercial Usage
|
|---|
| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in
|
|---|
| 12 | ** accordance with the Qt Commercial License Agreement provided with the
|
|---|
| [846] | 13 | ** Software or, alternatively, in accordance with the terms contained in a
|
|---|
| 14 | ** written agreement between you and Nokia.
|
|---|
| [2] | 15 | **
|
|---|
| [846] | 16 | ** GNU Free Documentation License
|
|---|
| 17 | ** Alternatively, this file may be used under the terms of the GNU Free
|
|---|
| 18 | ** Documentation License version 1.3 as published by the Free Software
|
|---|
| 19 | ** Foundation and appearing in the file included in the packaging of this
|
|---|
| 20 | ** file.
|
|---|
| [2] | 21 | **
|
|---|
| [561] | 22 | ** If you have questions regarding the use of this file, please contact
|
|---|
| 23 | ** Nokia at [email protected].
|
|---|
| [2] | 24 | ** $QT_END_LICENSE$
|
|---|
| 25 | **
|
|---|
| 26 | ****************************************************************************/
|
|---|
| 27 |
|
|---|
| 28 | /*!
|
|---|
| 29 | \example demos/composition
|
|---|
| 30 | \title Composition Modes
|
|---|
| 31 |
|
|---|
| 32 | This demo shows some of the more advanced composition modes supported by Qt.
|
|---|
| 33 |
|
|---|
| 34 | \image composition-demo.png
|
|---|
| 35 |
|
|---|
| 36 | The two most common forms of composition are \bold{Source} and \bold{SourceOver}.
|
|---|
| 37 | \bold{Source} is used to draw opaque objects onto a paint device. In this mode,
|
|---|
| 38 | each pixel in the source replaces the corresponding pixel in the destination.
|
|---|
| 39 | In \bold{SourceOver} composition mode, the source object is transparent and is
|
|---|
| 40 | drawn on top of the destination.
|
|---|
| 41 |
|
|---|
| 42 | In addition to these standard modes, Qt defines the complete set of composition modes
|
|---|
| 43 | as defined by X. Porter and Y. Duff. See the QPainter documentation for details.
|
|---|
| 44 | */
|
|---|
