Initial commit

2026-04-29 07:19:21 +03:00
commit 9a8cdfa08a
5964 changed files with 1194660 additions and 0 deletions
@@ -0,0 +1,110 @@
+// Copyright (C) 2020 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+// Qt-Security score:significant reason:default
+
+import QtQuick
+import Qt5Compat.GraphicalEffects.private
+
+/*!
+    \qmltype Desaturate
+    \inqmlmodule Qt5Compat.GraphicalEffects
+    \since QtGraphicalEffects 1.0
+    \inherits QtQuick::Item
+    \ingroup qtgraphicaleffects-color
+    \brief Reduces the saturation of the colors.
+
+   Desaturated pixel values are calculated as averages of the original RGB
+   component values of the source item.
+
+    \table
+    \header
+        \li Source
+        \li Effect applied
+    \row
+        \li \image Original_bug.png
+        \li \image Desaturate_bug.png
+    \endtable
+
+    \section1 Example
+
+    The following example shows how to apply the effect.
+    \snippet Desaturate-example.qml example
+
+*/
+Item {
+    id: rootItem
+
+    /*!
+        This property defines the source item that provides the source pixels to
+        the effect.
+
+        \note It is not supported to let the effect include itself, for
+        instance by setting source to the effect's parent.
+    */
+    property variant source
+
+    /*!
+        This property defines how much the source colors are desaturated.
+
+        The value ranges from 0.0 (no change) to 1.0 (desaturated). By default,
+        the property is set to \c 0.0 (no change).
+
+        \table
+        \header
+        \li Output examples with different desaturation values
+        \li
+        \li
+        \row
+            \li \image Desaturate_desaturation1.png
+            \li \image Desaturate_desaturation2.png
+            \li \image Desaturate_desaturation3.png
+        \row
+            \li \b { desaturation: 0.0 }
+            \li \b { desaturation: 0.5 }
+            \li \b { desaturation: 1.0 }
+        \endtable
+    */
+    property real desaturation: 0.0
+
+    /*!
+        This property allows the effect output pixels to be cached in order to
+        improve the rendering performance.
+
+        Every time the source or effect properties are changed, the pixels in
+        the cache must be updated. Memory consumption is increased, because an
+        extra buffer of memory is required for storing the effect output.
+
+        It is recommended to disable the cache when the source or the effect
+        properties are animated.
+
+        By default, the property is set to \c false.
+
+    */
+    property bool cached: false
+
+    SourceProxy {
+        id: sourceProxy
+        input: rootItem.source
+        interpolation: input && input.smooth ? SourceProxy.LinearInterpolation : SourceProxy.NearestInterpolation
+    }
+
+    ShaderEffectSource {
+        id: cacheItem
+        anchors.fill: parent
+        visible: rootItem.cached
+        smooth: true
+        sourceItem: shaderItem
+        live: true
+        hideSource: visible
+    }
+
+    ShaderEffect {
+        id: shaderItem
+        property variant source: sourceProxy.output
+        property real desaturation: rootItem.desaturation
+
+        anchors.fill: parent
+
+        fragmentShader: "qrc:/qt-project.org/imports/Qt5Compat/GraphicalEffects/shaders_ng/desaturate.frag.qsb"
+    }
+}