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Diffstat (limited to 'basicsuite/Shader Effects/ColorPicker.qml')
| -rwxr-xr-x | basicsuite/Shader Effects/ColorPicker.qml | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/basicsuite/Shader Effects/ColorPicker.qml b/basicsuite/Shader Effects/ColorPicker.qml new file mode 100755 index 0000000..30b77b9 --- /dev/null +++ b/basicsuite/Shader Effects/ColorPicker.qml @@ -0,0 +1,272 @@ +/***************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Add-On Graphical Effects module. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Digia Plc and its Subsidiary(-ies) 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 2.0 + +Item { + id: root + property color color: Qt.hsla(hue, saturation, lightness, alpha) + property alias hue: hueSlider.value + property alias saturation: saturationSlider.value + property alias lightness: lightnessSlider.value + property alias alpha: alphaSlider.value + property bool showAlphaSlider: true + + width: parent.width + height: 100 + + Image { + anchors.fill: map + source: "images/background.png" + fillMode: Image.Tile + } + + Rectangle { + id: colorBox + anchors.fill: map + color: root.color + } + + ShaderEffect { + id: map + anchors.left: parent.left + anchors.leftMargin: 10 + anchors.top: parent.top + anchors.topMargin: 5 + width: 68 + height: width + opacity: 0.01 + property real hue: root.hue + + fragmentShader: " + varying mediump vec2 qt_TexCoord0; + uniform highp float qt_Opacity; + uniform highp float hue; + + highp float hueToIntensity(highp float v1, highp float v2, highp float h) { + h = fract(h); + if (h < 1.0 / 6.0) + return v1 + (v2 - v1) * 6.0 * h; + else if (h < 1.0 / 2.0) + return v2; + else if (h < 2.0 / 3.0) + return v1 + (v2 - v1) * 6.0 * (2.0 / 3.0 - h); + + return v1; + } + + highp vec3 HSLtoRGB(highp vec3 color) { + highp float h = color.x; + highp float l = color.z; + highp float s = color.y; + + if (s < 1.0 / 256.0) + return vec3(l, l, l); + + highp float v1; + highp float v2; + if (l < 0.5) + v2 = l * (1.0 + s); + else + v2 = (l + s) - (s * l); + + v1 = 2.0 * l - v2; + + highp float d = 1.0 / 3.0; + highp float r = hueToIntensity(v1, v2, h + d); + highp float g = hueToIntensity(v1, v2, h); + highp float b = hueToIntensity(v1, v2, h - d); + return vec3(r, g, b); + } + + void main() { + lowp vec4 c = vec4(1.0); + c.rgb = HSLtoRGB(vec3(hue, 1.0 - qt_TexCoord0.t, qt_TexCoord0.s)); + gl_FragColor = c * qt_Opacity; + } + " + + MouseArea { + id: mapMouseArea + anchors.fill: parent + hoverEnabled: true + preventStealing: true + onPositionChanged: { + if (pressed) { + var xx = Math.max(0, Math.min(mouse.x, parent.width)) + var yy = Math.max(0, Math.min(mouse.y, parent.height)) + root.saturation = 1.0 - yy / parent.height + root.lightness = xx / parent.width + } + } + onPressed: positionChanged(mouse) + + onEntered: map.opacity = 1 + onReleased: { + if (mouse.x < 0 || mouse.x > parent.width || mouse.y < 0 || mouse.y > parent.height) { + map.opacity = 0.01; + } + } + onExited: { + if (!pressed) { + map.opacity = 0.01; + } + } + } + + Image { + id: crosshair + source: "images/slider_handle.png" + x: root.lightness * parent.width - width / 2 + y: (1.0 - root.saturation) * parent.height - height / 2 + } + } + + Column { + anchors.left: parent.left + anchors.right: parent.right + + ColorSlider { + id: hueSlider + minimum: 0.0 + maximum: 1.0 + value: 0.5 + caption: "H" + trackItem: Rectangle { + width: parent.height + height: parent.width - 10 + color: "red" + rotation: -90 + transformOrigin: Item.TopLeft + y: width + x: 5 + gradient: 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)} + } + } + } + + ColorSlider { + id: saturationSlider + minimum: 0.0 + maximum: 1.0 + value: 1.0 + caption: "S" + handleOpacity: 1.5 - map.opacity + trackItem: Rectangle { + width: parent.height + height: parent.width - 10 + color: "red" + rotation: -90 + transformOrigin: Item.TopLeft + y: width + x: 5 + gradient: Gradient { + GradientStop { position: 0; color: Qt.hsla(root.hue, 0.0, root.lightness, 1.0) } + GradientStop { position: 1; color: Qt.hsla(root.hue, 1.0, root.lightness, 1.0) } + } + } + } + + ColorSlider { + id: lightnessSlider + minimum: 0.0 + maximum: 1.0 + value: 0.5 + caption: "L" + handleOpacity: 1.5 - map.opacity + trackItem: Rectangle { + width: parent.height + height: parent.width - 10 + color: "red" + rotation: -90 + transformOrigin: Item.TopLeft + y: width + x: 5 + gradient: Gradient { + GradientStop { position: 0; color: 'black' } + GradientStop { position: 0.5; color: Qt.hsla(root.hue, root.saturation, 0.5, 1.0) } + GradientStop { position: 1; color: 'white' } + } + } + } + + ColorSlider { + id: alphaSlider + minimum: 0.0 + maximum: 1.0 + value: 1.0 + caption: "A" + opacity: showAlphaSlider ? 1.0 : 0.0 + trackItem:Item { + anchors.fill: parent + Image { + anchors {fill: parent; leftMargin: 5; rightMargin: 5} + source: "images/background.png" + fillMode: Image.TileHorizontally + } + Rectangle { + width: parent.height + height: parent.width - 10 + color: "red" + rotation: -90 + transformOrigin: Item.TopLeft + y: width + x: 5 + gradient: Gradient { + GradientStop { position: 0; color: "transparent" } + GradientStop { position: 1; color: Qt.hsla(root.hue, root.saturation, root.lightness, 1.0) } + } + } + } + } + + Label { + caption: "ARGB" + text: "#" + ((Math.ceil(root.alpha * 255) + 256).toString(16).substr(1, 2) + root.color.toString().substr(1, 6)).toUpperCase(); + } + } +} |