e92c1976a6
Change-Id: Ifa6a99db27ce51529489bf077a839a3107b524d2 Reviewed-by: Qt Doc Bot <qt_docbot@qt-project.org> Reviewed-by: Paul Olav Tvete <paul.tvete@nokia.com>
52 lines
1.8 KiB
Plaintext
52 lines
1.8 KiB
Plaintext
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the documentation of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:FDL$
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** GNU Free Documentation License
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** Alternatively, this file may be used under the terms of the GNU Free
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** Documentation License version 1.3 as published by the Free Software
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** Foundation and appearing in the file included in the packaging of
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** this file.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms
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** and conditions contained in a signed written agreement between you
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** and Nokia.
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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/*!
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\example painting/deform
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\title Vector Deformation
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This example shows how to use advanced vector techniques to draw text
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using a \c QPainterPath.
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\image deform-demo.png
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We define a vector deformation field in the shape of a lens and apply
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this to all points in a path. This means that what is rendered on
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screen is not pixel manipulation, but modified vector representations of
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the glyphs themselves. This is visible from the high quality of the
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antialiased edges for the deformed glyphs.
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To get a fairly complex path we allow the user to type in text and
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convert the text to paths. This is done using the
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QPainterPath::addText() function.
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The lens is drawn using a single call to QPainter::drawEllipse(),
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using a QRadialGradient to fill it with a specialized color
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table, giving the effect of the sun's reflection and a drop
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shadow. The lens is cached as a pixmap for better performance.
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*/
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