From d90a4c05c34a38922e78d14856e26305bebe096e Mon Sep 17 00:00:00 2001
From: Charles Yin <charles.yin@nokia.com>
Date: Wed, 18 May 2011 12:04:06 +1000
Subject: add motion chart canvas example

Change-Id: Iccce2c4fc2bdeb4289093fa9675440eff589ae41
---
 .../declarative/canvas/motionchart/motionchart.qml | 82 ++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 examples/declarative/canvas/motionchart/motionchart.qml

(limited to 'examples')

diff --git a/examples/declarative/canvas/motionchart/motionchart.qml b/examples/declarative/canvas/motionchart/motionchart.qml
new file mode 100644
index 0000000000..7c03471685
--- /dev/null
+++ b/examples/declarative/canvas/motionchart/motionchart.qml
@@ -0,0 +1,82 @@
+import QtQuick 2.0
+
+Canvas {
+  id:motionChart
+  width:1300
+  height: 700
+  property int progress:0
+  property applesFrom: [1000, 300];
+  property applesTo:[1200, 400];
+  property orangesFrom: [1150, 200];
+  property orangesTo:[750,  150];
+  property bananasFrom: [300, 250];
+  property bananasTo:[788, 617];
+
+  property date startDate:new Date (1988,0,1)
+  property date endDate:new Date (1989,6,1)
+  property variant title:["Fruit", "Sales", "Expenses", "Location"];
+
+  Timer {
+    id:timer
+    interval: 1; running: false; repeat: true
+    onTriggered: {
+      motionChart.draw();
+    }
+  }
+
+  MouseArea {
+    anchors.fill: parent
+    onPressed : {
+      motionChart.progress = 0;
+      timer.running = true;
+    }
+  }
+
+  function draw() {
+    var int totalDays = Math.ceil((endDate.getTime()-startDate.getTime())/(1000*60*60*24));
+    if (motionChart.progress >= totalDays) {
+      timer.running = false;
+      return;
+    } 
+    var apples = [];
+    apples[0] = applesFrom[0] + ((applesTo[0] - applesFrom[0]) * (motionChart.progress/totalDays));
+    apples[1] = applesFrom[1] + ((applesTo[1] - applesFrom[1]) * (motionChart.progress/totalDays));
+
+    var oranges = [];
+    oranges[0] = orangesFrom[0] + ((orangesTo[0] - orangesFrom[0]) * (motionChart.progress/totalDays));
+    oranges[1] = orangesFrom[1] + ((orangesTo[1] - orangesFrom[1]) * (motionChart.progress/totalDays));
+ 
+    var bananas = [];
+    bananas[0] = bananasFrom[0] + ((bananasTo[0] - bananasFrom[0]) * (motionChart.progress/totalDays));
+    bananas[1] = bananasFrom[1] + ((bananasTo[1] - bananasFrom[1]) * (motionChart.progress/totalDays));
+
+    var ctx = motionChart.getContext("2d");
+    ctx.globalCompositeOperation = "source-over";
+
+    ctx.clearRect(0, 0, motionChart.width, motionChart.height);
+    //apples
+    ctx.fillColor = Qt.rgba(0,1,0,1);
+    ctx.beginPath();
+    ctx.arc( apples[0] , 700 - apples[1] , 20 , 0 , Math.PI * 2 , true );
+    ctx.closePath();
+    ctx.fill();        
+
+    //oranges
+    ctx.fillColor = Qt.rgba(0,1,0,1);
+    ctx.beginPath();
+    ctx.arc( oranges[0], 700 - oranges[1] , 20 , 0 , Math.PI * 2 , true );
+    ctx.closePath();
+    ctx.fill();        
+
+    //bananas
+    var bananaX =;
+    var bananaY =;
+    ctx.fillColor = Qt.rgba(0,1,0,1);
+    ctx.beginPath();
+    ctx.arc( bananas[0] , 700 - bananas[1] , 20 , 0 , Math.PI * 2 , true );
+    ctx.closePath();
+    ctx.fill();        
+
+    motionChart.progress ++; 
+  }
+}
-- 
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