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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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
+import "style.js" as Style
+
+Item{
+ id:canvas
+ width:1
+ height:1
+
+ x: app.width/2+xOffset
+ y: app.height/2+yOffset
+
+ property real xOffset: 0
+ property real yOffset: 0
+ property real angle: 0
+
+ property real zoomInTarget: 5
+ property real scalingFactor: 5
+
+ property real rotationOriginX
+ property real rotationOriginY
+
+ function goHome()
+ {
+ worldMouseArea.panning = false
+ xOffset = 0; //(app.homeCenterX * app.homeScaleFactor);
+ yOffset = 0; //(-app.homeCenterY * app.homeScaleFactor);
+ rotationOriginX = 0;
+ rotationOriginY = 0;
+ angle = 0;
+ zoomInTarget = app.homeScaleFactor;
+ app.navigationState = 0 //home
+ app.forceActiveFocus()
+ zoomAnimation.restart();
+ }
+ function goTo(target, updateScalingFactor)
+ {
+ if (target)
+ {
+ worldMouseArea.panning = false
+ xOffset = -target.x;
+ yOffset = -target.y;
+ rotationOriginX = target.x;
+ rotationOriginY = target.y;
+ angle = 0
+ zoomInTarget = target.targetScale;
+ if (updateScalingFactor)
+ scalingFactor = zoomInTarget
+ app.navigationState = target.navState
+ }
+ }
+
+ function goNext() {
+ goTo(app.getNext(), false);
+ navigationAnimation.restartAnimation()
+ }
+ function goPrevious() {
+ goTo(app.getPrevious(), false);
+ navigationAnimation.restartAnimation()
+ }
+
+ function goBack()
+ {
+ if (app.useGroups && app.navigationState == 2) {
+ goTo(app.getCurrentGroup(), false)
+ zoomAnimation.restart()
+ }
+ else
+ canvas.goHome()
+ }
+
+ Behavior on xOffset {
+ id: xOffsetBehaviour
+ enabled: !worldMouseArea.panning
+ NumberAnimation{duration: Style.APP_ANIMATION_DELAY}
+ }
+
+ Behavior on yOffset {
+ id: yOffsetBehaviour
+ enabled: !worldMouseArea.panning
+ NumberAnimation{duration: Style.APP_ANIMATION_DELAY}
+ }
+
+ Behavior on rotationOriginX {
+ NumberAnimation{
+ duration: Style.APP_ANIMATION_DELAY
+ }
+ }
+ Behavior on rotationOriginY {
+ NumberAnimation{
+ duration: Style.APP_ANIMATION_DELAY
+ }
+ }
+
+ transform: [
+
+ Scale{
+ id: canvasScale
+ origin.x: canvas.rotationOriginX
+ origin.y: canvas.rotationOriginY
+ xScale: canvas.scalingFactor
+ yScale :canvas.scalingFactor
+
+ }
+ ]
+}