--- /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
+import "AppManager.js" as AppManager
+
+Magnifier {
+ id: root
+
+ property Item editor: parent.editor
+ // Defines the center of the content to be magnified in X axis
+ // Note: the center of the content to be magnified in Y axis is determined by the cursor position.
+ property variant contentCenter: Qt.point(0, 0) //editor's coordinate system
+ property bool platformInverted: false
+
+ function show() {
+ parent = AppManager.rootObject();
+ sourceRect = internal.calculateSourceGeometry();
+ internal.calculatePosition();
+ root.visible = true;
+ }
+
+ function hide() {
+ root.visible = false;
+ }
+
+ sourceRect: Qt.rect(0, 0, 0, 0)
+ visible: false
+ scaleFactor: 1.5
+ maskFileName: root.platformInverted ? ":/graphics_1_1/qtg_graf_magnifier_mask_inverse.svg"
+ : ":/graphics_1_1/qtg_graf_magnifier_mask.svg"
+ overlayFileName: root.platformInverted ? ":/graphics_1_1/qtg_graf_magnifier_inverse.svg"
+ : ":/graphics_1_1/qtg_graf_magnifier.svg"
+
+ onContentCenterChanged: internal.updateSourceRect()
+
+ onSourceRectChanged: if (visible) internal.calculatePosition()
+
+ Connections {
+ target: editor
+ onCursorPositionChanged: internal.updateSourceRect
+ }
+
+ // Private
+ QtObject {
+ id: internal
+
+ function updateSourceRect () {
+ if (visible)
+ sourceRect = internal.calculateSourceGeometry();
+ }
+
+ function calculatePosition() {
+ width = sourceRect.width * scaleFactor;
+ height = sourceRect.height * scaleFactor;
+
+ var magnifierMargin = -platformStyle.paddingLarge; // the offset between the magnifier and top of the line
+ var pos = parent.mapFromItem(editor,
+ contentCenter.x - width/2,
+ contentCenter.y - sourceRect.height/2 - height - magnifierMargin);
+
+ root.x = pos.x;
+ root.y = pos.y;
+ }
+
+ // Calculates and returns the source geometry of the content to be magnified in scene coordinates
+ function calculateSourceGeometry() {
+ var magniferSize = Qt.size(platformStyle.graphicSizeMedium * 2, platformStyle.graphicSizeMedium * 2);
+ var sourceSize = Qt.size(magniferSize.width / scaleFactor, magniferSize.height / scaleFactor);
+ var contentCenterScene = editor.mapToItem(null, contentCenter.x, contentCenter.y);
+
+ var rect = Qt.rect(contentCenterScene.x - sourceSize.width / 2,
+ contentCenterScene.y - sourceSize.height / 2,
+ sourceSize.width, sourceSize.height);
+ return rect;
+ }
+ }
+}