X-Git-Url: https://vcs.maemo.org/git/?a=blobdiff_plain;f=mardrone%2Fimports%2Fcom%2Fmeego%2FMagnifier.qml;fp=mardrone%2Fimports%2Fcom%2Fmeego%2FMagnifier.qml;h=cacdaa6f09e3e88d42f478960534e0bc7340c999;hb=53abfcee86d03676ae5e3b648d6c7cee69c2f4e1;hp=0000000000000000000000000000000000000000;hpb=f7f1d7c4427cba2c8490f2767259b1d06f66c7ed;p=mardrone diff --git a/mardrone/imports/com/meego/Magnifier.qml b/mardrone/imports/com/meego/Magnifier.qml new file mode 100644 index 0000000..cacdaa6 --- /dev/null +++ b/mardrone/imports/com/meego/Magnifier.qml @@ -0,0 +1,170 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Components project. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Nokia Corporation 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 1.1 + +Item { + id: root + + property alias sourceItem: effectSource.sourceItem + property real xCenter: 0 // in source item coordinates + property real yCenter: 0 // in source item coordinates + + // Source rect is not as small as it can be as there is drawing problems + // with small source rect/texture size. + property real _realScaleFactor: 1.25 + property real _sourceRectMultiplier: 2 + + property bool active: false + + visible: active + width: 182 + height: 211 + z: Number.MAX_VALUE + + function __rootElement() { + var ret = parent + while (ret.parent) { + ret = ret.parent + } + return ret + } + + Component.onCompleted: { + sourceItem = parent; + declarativeView.setFullViewportMode(root); + } + + ShaderEffectSource { + id: effectSource + sourceRect: Qt.rect(root.xCenter - textureSize.width / 2, + root.yCenter - textureSize.height / 2, + textureSize.width, + textureSize.height); + textureSize: Qt.size(root._sourceRectMultiplier * root.width, + root._sourceRectMultiplier * root.height); + + hideSource: false + smooth: true + + property real scaleFactor: root._sourceRectMultiplier * root._realScaleFactor + } + + Image { + id: magnifierFrameImage + source: "/usr/share/themes/blanco/meegotouch/images/theme/basement/meegotouch-virtual-keyboard/meegotouch-seattle-magnifier-frame.png" + } + + ShaderEffectSource { + id: magnifierFrame + sourceItem: magnifierFrameImage + hideSource: true + live: false + } + + Image { + id: magnifierMaskImage + source: "/usr/share/themes/blanco/meegotouch/images/theme/basement/meegotouch-virtual-keyboard/meegotouch-seattle-magnifier-frame-mask.png" + } + + ShaderEffectSource { + id: magnifierMask + sourceItem: magnifierMaskImage + hideSource: true + live: false + } + + ShaderEffectItem { + id: magnifier + anchors.fill:parent + visible: root.visible + + vertexShader: " + attribute highp vec4 qt_Vertex; + attribute highp vec2 qt_MultiTexCoord0; + uniform highp mat4 qt_ModelViewProjectionMatrix; + uniform highp float scaleFactor; + varying highp vec2 qt_TexCoord0; + varying highp vec2 qt_TexCoord1; + void main() { + qt_TexCoord0.x = 0.5 - 1. / (2. * scaleFactor) + qt_MultiTexCoord0.x / scaleFactor; + qt_TexCoord0.y = 0.5 - 1. / (2. * scaleFactor) + qt_MultiTexCoord0.y / scaleFactor; + qt_TexCoord1 = qt_MultiTexCoord0; + gl_Position = qt_ModelViewProjectionMatrix * qt_Vertex; + }"; + + fragmentShader: " + varying highp vec2 qt_TexCoord0; + varying highp vec2 qt_TexCoord1; + uniform lowp sampler2D source; + uniform lowp sampler2D frame; + uniform lowp sampler2D mask; + void main() { + lowp vec4 frame_c = texture2D(frame, qt_TexCoord1); + lowp vec4 mask_c = texture2D(mask, qt_TexCoord1); + lowp vec4 color_c = texture2D(source, qt_TexCoord0); + bool outsideElement=(qt_TexCoord0.s<0. || qt_TexCoord0.s>1. || qt_TexCoord0.t<0. || qt_TexCoord0.t>1.); + bool onGlass=(mask_c.a==1.); + + if (outsideElement) { + // make white outside the element + color_c=vec4(1.,1.,1.,1.); + } else if (onGlass) { + // blend premultiplied texture with pure white (background) + color_c = color_c + vec4(1.,1.,1.,1.) * (1.-color_c.a); + } + + if ( qt_TexCoord1.y >= 0.98 ) { + // Top part of item above visible magnifier frame is made + // transparent explicitly to prevent showing of wrongly + // colored pixels, which would otherwise appear sometimes + // when using sourceRect functionality. + gl_FragColor = vec4(0.,0.,0.,0.); + } else { + gl_FragColor = onGlass ? color_c : frame_c; + } + }"; + + property variant source: effectSource + property variant frame: magnifierFrame + property variant mask: magnifierMask + property real scaleFactor: effectSource.scaleFactor; + } +}