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Diffstat (limited to 'src/effects/LinearGradient.qml')
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diff --git a/src/effects/LinearGradient.qml b/src/effects/LinearGradient.qml deleted file mode 100644 index e82c360..0000000 --- a/src/effects/LinearGradient.qml +++ /dev/null @@ -1,332 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2020 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the Qt Graphical Effects module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -import QtQuick 2.12 -import QtGraphicalEffects.private 1.12 - -/*! - \qmltype LinearGradient - \inqmlmodule QtGraphicalEffects - \since QtGraphicalEffects 1.0 - \inherits QtQuick2::Item - \ingroup qtgraphicaleffects-gradient - \brief Draws a linear gradient. - - A gradient is defined by two or more colors, which are blended seamlessly. - The colors start from the given start point and end to the given end point. - - \table - \header - \li Effect applied - \row - \li \image LinearGradient.png - \endtable - - \section1 Example - - The following example shows how to apply the effect. - \snippet LinearGradient-example.qml example - -*/ -Item { - id: rootItem - - /*! - This property defines the starting point where the color at gradient - position of 0.0 is rendered. Colors at larger position values are - rendered linearly towards the end point. The point is given in pixels - and the default value is Qt.point(0, 0). Setting the default values for - the start and \l{LinearGradient::end}{end} results in a full height - linear gradient on the y-axis. - - \table - \header - \li Output examples with different start values - \li - \li - \row - \li \image LinearGradient_start1.png - \li \image LinearGradient_start2.png - \li \image LinearGradient_start3.png - \row - \li \b { start: QPoint(0, 0) } - \li \b { start: QPoint(150, 150) } - \li \b { start: QPoint(300, 0) } - \row - \li \l end: QPoint(300, 300) - \li \l end: QPoint(300, 300) - \li \l end: QPoint(300, 300) - \endtable - - */ - property variant start: Qt.point(0, 0) - - /*! - This property defines the ending point where the color at gradient - position of 1.0 is rendered. Colors at smaller position values are - rendered linearly towards the start point. The point is given in pixels - and the default value is Qt.point(0, height). Setting the default values - for the \l{LinearGradient::start}{start} and end results in a full - height linear gradient on the y-axis. - - \table - \header - \li Output examples with different end values - \li - \li - \row - \li \image LinearGradient_end1.png - \li \image LinearGradient_end2.png - \li \image LinearGradient_end3.png - \row - \li \b { end: Qt.point(300, 300) } - \li \b { end: Qt.point(150, 150) } - \li \b { end: Qt.point(300, 0) } - \row - \li \l start: Qt.point(0, 0) - \li \l start: Qt.point(0, 0) - \li \l start: Qt.point(0, 0) - \endtable - - */ - property variant end: Qt.point(0, height) - - /*! - 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 - - /*! - This property defines the item that is going to be filled with gradient. - Source item gets rendered into an intermediate pixel buffer and the - alpha values from the result are used to determine the gradient's pixels - visibility in the display. The default value for source is undefined and - in that case whole effect area is filled with gradient. - - \table - \header - \li Output examples with different source values - \li - \li - \row - \li \image LinearGradient_maskSource1.png - \li \image LinearGradient_maskSource2.png - \row - \li \b { source: undefined } - \li \b { source: Image { source: images/butterfly.png } } - \row - \li \l start: Qt.point(0, 0) - \li \l start: Qt.point(0, 0) - \row - \li \l end: Qt.point(300, 300) - \li \l end: Qt.point(300, 300) - \endtable - - \note It is not supported to let the effect include itself, for - instance by setting source to the effect's parent. - */ - property variant source - - - /*! - A gradient is defined by two or more colors, which are blended - seamlessly. The colors are specified as a set of GradientStop child - items, each of which defines a position on the gradient from 0.0 to 1.0 - and a color. The position of each GradientStop is defined by the - position property, and the color is definded by the color property. - - \table - \header - \li Output examples with different gradient values - \li - \li - \row - \li \image LinearGradient_gradient1.png - \li \image LinearGradient_gradient2.png - \li \image LinearGradient_gradient3.png - \row - \li \b {gradient:} \code - Gradient { - GradientStop { - position: 0.000 - color: Qt.rgba(1, 0, 0, 1) - } - GradientStop { - position: 0.167 - color: Qt.rgba(1, 1, 0, 1) - } - GradientStop { - position: 0.333 - color: Qt.rgba(0, 1, 0, 1) - } - GradientStop { - position: 0.500 - color: Qt.rgba(0, 1, 1, 1) - } - GradientStop { - position: 0.667 - color: Qt.rgba(0, 0, 1, 1) - } - GradientStop { - position: 0.833 - color: Qt.rgba(1, 0, 1, 1) - } - GradientStop { - position: 1.000 - color: Qt.rgba(1, 0, 0, 1) - } - } - \endcode - \li \b {gradient:} \code - Gradient { - GradientStop { - position: 0.0 - color: "#F0F0F0" - } - GradientStop { - position: 0.5 - color: "#000000" - } - GradientStop { - position: 1.0 - color: "#F0F0F0" - } - } - \endcode - \li \b {gradient:} \code - Gradient { - GradientStop { - position: 0.0 - color: "#00000000" - } - GradientStop { - position: 1.0 - color: "#FF000000" - } - } - \endcode - \row - \li \l start: Qt.point(0, 0) - \li \l start: Qt.point(0, 0) - \li \l start: Qt.point(0, 0) - \row - \li \l end: Qt.point(300, 300) - \li \l end: Qt.point(300, 300) - \li \l end: Qt.point(300, 300) - \endtable - - */ - property Gradient gradient: Gradient { - GradientStop { position: 0.0; color: "white" } - GradientStop { position: 1.0; color: "black" } - } - - SourceProxy { - id: maskSourceProxy - input: rootItem.source - } - - ShaderEffectSource { - id: gradientSource - sourceItem: Rectangle { - width: 16 - height: 256 - gradient: rootItem.gradient - smooth: true - } - smooth: true - hideSource: true - visible: false - } - - ShaderEffectSource { - id: cacheItem - anchors.fill: parent - visible: rootItem.cached - smooth: true - sourceItem: shaderItem - live: true - hideSource: visible - } - - ShaderEffect { - id: shaderItem - - anchors.fill: parent - - property variant source: gradientSource - property variant maskSource: maskSourceProxy.output - property variant startPoint: Qt.point(start.x / width, start.y / height) - property real dx: end.x - start.x - property real dy: end.y - start.y - property real l: 1.0 / Math.sqrt(Math.pow(dx / width, 2.0) + Math.pow(dy / height, 2.0)) - property real angle: Math.atan2(dx, dy) - property variant matrixData: Qt.point(Math.sin(angle), Math.cos(angle)) - - vertexShader: "qrc:/qt-project.org/imports/QtGraphicalEffects/shaders_ng/lineargradient.vert.qsb" - - fragmentShader: maskSource == undefined ? noMaskShader : maskShader - - onFragmentShaderChanged: lChanged() - - property string maskShader: "qrc:/qt-project.org/imports/QtGraphicalEffects/shaders_ng/lineargradient_mask.frag.qsb" - property string noMaskShader: "qrc:/qt-project.org/imports/QtGraphicalEffects/shaders_ng/lineargradient_nomask.frag.qsb" - } -} |