--- /dev/null
+/****************************************************************************
+**
+** 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;
+ }
+}
projects / mardrone / blobdiff