1/****************************************************************************
2**
3** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
4** Contact: http://www.qt-project.org/legal
5**
6** This file is part of the examples of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:BSD$
9** You may use this file under the terms of the BSD license as follows:
10**
11** "Redistribution and use in source and binary forms, with or without
12** modification, are permitted provided that the following conditions are
13** met:
14**   * Redistributions of source code must retain the above copyright
15**     notice, this list of conditions and the following disclaimer.
16**   * Redistributions in binary form must reproduce the above copyright
17**     notice, this list of conditions and the following disclaimer in
18**     the documentation and/or other materials provided with the
19**     distribution.
20**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
21**     of its contributors may be used to endorse or promote products derived
22**     from this software without specific prior written permission.
23**
24**
25** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
36**
37** $QT_END_LICENSE$
38**
39****************************************************************************/
40
41import QtQuick 2.0
42import "../contents"
43Item {
44  id:container
45  width:320
46  height:480
47
48  Column {
49    spacing:5
50    anchors.fill:parent
51    Text { font.pointSize:15; text:"Rounded rectangle"; anchors.horizontalCenter:parent.horizontalCenter}
52    Canvas {
53        id:canvas
54        width:320
55        height:280
56        antialiasing: true
57
58        property int radius: rCtrl.value
59        property int rectx: rxCtrl.value
60        property int recty: ryCtrl.value
61        property int rectWidth: width - 2*rectx
62        property int rectHeight: height - 2*recty
63        property string strokeStyle:"blue"
64        property string fillStyle:"steelblue"
65        property int lineWidth:lineWidthCtrl.value
66        property bool fill:true
67        property bool stroke:true
68        property real alpha:alphaCtrl.value
69
70        onLineWidthChanged:requestPaint();
71        onFillChanged:requestPaint();
72        onStrokeChanged:requestPaint();
73        onRadiusChanged:requestPaint();
74        onRectxChanged:requestPaint();
75        onRectyChanged:requestPaint();
76        onAlphaChanged:requestPaint();
77
78        onPaint: {
79            var ctx = getContext("2d");
80            ctx.save();
81            ctx.clearRect(0,0,canvas.width, canvas.height);
82            ctx.strokeStyle = canvas.strokeStyle;
83            ctx.lineWidth = canvas.lineWidth
84            ctx.fillStyle = canvas.fillStyle
85            ctx.globalAlpha = canvas.alpha
86            ctx.beginPath();
87            ctx.moveTo(rectx+radius,recty);                 // top side
88            ctx.lineTo(rectx+rectWidth-radius,recty);
89            // draw top right corner
90            ctx.arcTo(rectx+rectWidth,recty,rectx+rectWidth,recty+radius,radius);
91            ctx.lineTo(rectx+rectWidth,recty+rectHeight-radius);    // right side
92            // draw bottom right corner
93            ctx.arcTo(rectx+rectWidth,recty+rectHeight,rectx+rectWidth-radius,recty+rectHeight,radius);
94            ctx.lineTo(rectx+radius,recty+rectHeight);              // bottom side
95            // draw bottom left corner
96            ctx.arcTo(rectx,recty+rectHeight,rectx,recty+rectHeight-radius,radius);
97            ctx.lineTo(rectx,recty+radius);                 // left side
98            // draw top left corner
99            ctx.arcTo(rectx,recty,rectx+radius,recty,radius);
100            ctx.closePath();
101            if (canvas.fill)
102                ctx.fill();
103            if (canvas.stroke)
104                ctx.stroke();
105            ctx.restore();
106        }
107    }
108
109    Rectangle {
110        id:controls
111        width:320
112        height:150
113        Column {
114          spacing:3
115          Slider {id:lineWidthCtrl; width:300; height:20; min:1; max:10; init:2; name:"Line width"}
116          Slider {id:rxCtrl; width:300; height:20; min:5; max:30; init:10; name:"rectx"}
117          Slider {id:ryCtrl; width:300; height:20; min:5; max:30; init:10; name:"recty"}
118          Slider {id:rCtrl; width:300; height:20; min:10; max:100; init:40; name:"Radius"}
119          Slider {id:alphaCtrl; width:300; height:20; min:0; max:1; init:1; name:"Alpha"}
120        }
121    }
122  }
123}
124