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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Quick Controls module 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 2.2
import QtQuick.Controls.Styles.Android 1.0
Canvas {
id: root
property var styleDef
property real viewportWidth
property real viewportHeight
clip: styleDef.isClip
canvasSize: Qt.size(viewportWidth, viewportHeight)
readonly property color fillColor: AndroidStyle.colorValue(styleDef.fillColor)
readonly property color strokeColor: AndroidStyle.colorValue(styleDef.strokeColor)
fillStyle: Qt.rgba(fillColor.r, fillColor.g, fillColor.b, styleDef.fillAlpha)
strokeStyle: Qt.rgba(strokeColor.r, strokeColor.g, strokeColor.b, strokeColor.strokeAlpha)
lineCap: styleDef.strokeLineCap.toLowerCase()
lineJoin: styleDef.strokeLineJoin.toLowerCase()
lineWidth: styleDef.strokeWidth
miterLimit: styleDef.strokeMiterlimit
// TODO:
// - styleDef.fillRule (VectorPathDrawable.VFullPath.mFillRule is unused)
// - styleDef.trimPathStart
// - styleDef.trimPathEnd
// - styleDef.trimPathOffset
onPaint:{
var ctx = canvas.getContext('2d')
for (var i = 0; i < styleDef.nodes.length; ++i) {
var currentX = 0
var currentY = 0
var ctrlPointX = 0
var ctrlPointY = 0
var reflectiveCtrlPointX = 0
var reflectiveCtrlPointY = 0
var cmd = styleDef.nodes[i].type
var params = styleDef.nodes[i].params
var previousCmd = ''
switch (cmd) {
case 'm': // moveto - Start a new sub-path (relative)
currentX += params[0]
currentY += params[1]
ctx.moveTo(currentX, currentY)
break;
case 'M': // moveto - Start a new sub-path
currentX = params[0]
currentY = params[1]
ctx.moveTo(currentX, currentY)
break;
case 'l': // lineto - Draw a line from the current point (relative)
currentX += params[0]
currentY += params[1]
ctx.lineTo(currentX, currentY)
break;
case 'L': // lineto - Draw a line from the current point
currentX = params[0]
currentY = params[1]
ctx.lineTo(currentX, currentY)
break;
case 'z': // closepath - Close the current subpath
case 'Z': // closepath - Close the current subpath
ctx.closePath()
break;
case 'h': // horizontal lineto - Draws a horizontal line (relative)
currentX += params[0]
ctx.lineTo(currentX, currentY)
break;
case 'H': // horizontal lineto - Draws a horizontal line
currentX = params[0]
ctx.lineTo(currentX, currentY)
break;
case 'v': // vertical lineto - Draws a vertical line from the current point (relative)
currentY += params[0]
ctx.lineTo(currentX, currentY)
break;
case 'V': // vertical lineto - Draws a vertical line from the current point
currentY = params[0]
ctx.lineTo(currentX, currentY)
break;
case 'c': // curveto - Draws a cubic Bézier curve (relative)
ctrlPointX = currentX + params[2]
ctrlPointY = currentY + params[3]
currentX += params[4]
currentY += params[5]
ctx.bezierCurveTo(params[0], params[1], ctrlPointX, ctrlPointY, currentX, currentY)
break;
case 'C': // curveto - Draws a cubic Bézier curve
ctrlPointX = params[2]
ctrlPointY = params[3]
currentX = params[4]
currentY = params[5]
ctx.bezierCurveTo(params[0], params[1], ctrlPointX, ctrlPointY, currentX, currentY)
break;
case 's': // smooth curveto - Draws a cubic Bézier curve (reflective control point)
break;
case 'S': // shorthand/smooth curveto Draws a cubic Bézier curve (reflective control point)
break;
case 'q': // Draws a quadratic Bézier (relative)
ctrlPointX = currentX + params[0]
ctrlPointY = currentY + params[1]
currentX += params[2]
currentY += params[3]
ctx.quadraticCurveTo(ctrlPointX, ctrlPointY, currentX, currentY)
break;
case 'Q': // Draws a quadratic Bézier
ctrlPointX = params[0]
ctrlPointY = params[1]
currentX = params[2]
currentY = params[3]
ctx.quadraticCurveTo(ctrlPointX, ctrlPointY, currentX, currentY)
break;
case 't': // Draws a quadratic Bézier curve (reflective control point) (relative)
reflectiveCtrlPointX = 0
reflectiveCtrlPointY = 0
if (previousCmd == 'q' || previousCmd == 't' || previousCmd == 'Q' || previousCmd == 'T') {
reflectiveCtrlPointX = currentX - ctrlPointX
reflectiveCtrlPointY = currentY - ctrlPointY
}
ctrlPointX = currentX + reflectiveCtrlPointX
ctrlPointY = currentY + reflectiveCtrlPointY
currentX += params[0]
currentY += params[1]
ctx.quadraticCurveTo(reflectiveCtrlPointX, reflectiveCtrlPointY, currentX, currentY)
break;
case 'T': // Draws a quadratic Bézier curve (reflective control point)
reflectiveCtrlPointX = currentX
reflectiveCtrlPointY = currentY
if (previousCmd == 'q' || previousCmd == 't' || previousCmd == 'Q' || previousCmd == 'T') {
reflectiveCtrlPointX = 2 * currentX - ctrlPointX
reflectiveCtrlPointY = 2 * currentY - ctrlPointY
}
ctrlPointX = reflectiveCtrlPointX
ctrlPointY = reflectiveCtrlPointY
currentX = params[0]
currentY = params[1]
ctx.quadraticCurveTo(reflectiveCtrlPointX, reflectiveCtrlPointY, currentX, currentY)
break;
case 'a': // Draws an elliptical arc
// ### TODO
break;
case 'A': // Draws an elliptical arc
// ### TODO
break;
}
previousCmd = node.type
}
}
}
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