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39 lines
1.5 KiB
Plaintext
39 lines
1.5 KiB
Plaintext
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
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/*!
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\example painting/gradients
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\title Gradients
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\ingroup examples-painting
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\brief Shows how gradients can be used with QPainter.
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\brief In this example we show the various types of gradients that can
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be used in Qt.
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\image gradients-demo.png
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There are three types of gradients:
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\list
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\li \b{Linear} gradients interpolate colors between start and end points.
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\li \b{Radial} gradients interpolate colors between a focal point and the
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points on a circle surrounding it.
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\li \b{Conical} gradients interpolate colors around a center point.
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\endlist
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The panel on the right contains a color table editor that defines
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the colors in the gradient. The three topmost controls determine the red,
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green and blue components while the last defines the alpha of the
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gradient. You can move points, and add new ones, by clicking with the left
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mouse button, and remove points by clicking with the right button.
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There are three example configurations available at the bottom of
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the page that are provided as suggestions on how a color table could be
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configured.
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Qt also provides a suite of named gradient presets. They are based on the
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free WebGradients collection. Click on the name in the Presets box to show
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the gradient. Use the arrow buttons to browse through the available
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presets.
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*/
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