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VCanvas_vml = createClass(VCanvas_base, {
init: function (width, height, target) {
var groupel;
VCanvas_vml._super.init.call(this, width, height, target);
if (target[0]) {
target = target[0];
}
$.data(target, '_jqs_vcanvas', this);
this.canvas = document.createElement('span');
$(this.canvas).css({ display: 'inline-block', position: 'relative', overflow: 'hidden', width: width, height: height, margin: '0px', padding: '0px', verticalAlign: 'top'});
this._insert(this.canvas, target);
this._calculatePixelDims(width, height, this.canvas);
this.canvas.width = this.pixelWidth;
this.canvas.height = this.pixelHeight;
groupel = '<v:group coordorigin="0 0" coordsize="' + this.pixelWidth + ' ' + this.pixelHeight + '"' +
' style="position:absolute;top:0;left:0;width:' + this.pixelWidth + 'px;height=' + this.pixelHeight + 'px;"></v:group>';
this.canvas.insertAdjacentHTML('beforeEnd', groupel);
this.group = $(this.canvas).children()[0];
this.rendered = false;
this.prerender = '';
},
_drawShape: function (shapeid, path, lineColor, fillColor, lineWidth) {
var vpath = [],
initial, stroke, fill, closed, vel, plen, i;
for (i = 0, plen = path.length; i < plen; i++) {
vpath[i] = '' + (path[i][0]) + ',' + (path[i][1]);
}
initial = vpath.splice(0, 1);
lineWidth = lineWidth === undefined ? 1 : lineWidth;
stroke = lineColor === undefined ? ' stroked="false" ' : ' strokeWeight="' + lineWidth + 'px" strokeColor="' + lineColor + '" ';
fill = fillColor === undefined ? ' filled="false"' : ' fillColor="' + fillColor + '" filled="true" ';
closed = vpath[0] === vpath[vpath.length - 1] ? 'x ' : '';
vel = '<v:shape coordorigin="0 0" coordsize="' + this.pixelWidth + ' ' + this.pixelHeight + '" ' +
' id="jqsshape' + shapeid + '" ' +
stroke +
fill +
' style="position:absolute;left:0px;top:0px;height:' + this.pixelHeight + 'px;width:' + this.pixelWidth + 'px;padding:0px;margin:0px;" ' +
' path="m ' + initial + ' l ' + vpath.join(', ') + ' ' + closed + 'e">' +
' </v:shape>';
return vel;
},
_drawCircle: function (shapeid, x, y, radius, lineColor, fillColor, lineWidth) {
var stroke, fill, vel;
x -= radius;
y -= radius;
stroke = lineColor === undefined ? ' stroked="false" ' : ' strokeWeight="' + lineWidth + 'px" strokeColor="' + lineColor + '" ';
fill = fillColor === undefined ? ' filled="false"' : ' fillColor="' + fillColor + '" filled="true" ';
vel = '<v:oval ' +
' id="jqsshape' + shapeid + '" ' +
stroke +
fill +
' style="position:absolute;top:' + y + 'px; left:' + x + 'px; width:' + (radius * 2) + 'px; height:' + (radius * 2) + 'px"></v:oval>';
return vel;
},
_drawPieSlice: function (shapeid, x, y, radius, startAngle, endAngle, lineColor, fillColor) {
var vpath, startx, starty, endx, endy, stroke, fill, vel;
if (startAngle === endAngle) {
return ''; // VML seems to have problem when start angle equals end angle.
}
if ((endAngle - startAngle) === (2 * Math.PI)) {
startAngle = 0.0; // VML seems to have a problem when drawing a full circle that doesn't start 0
endAngle = (2 * Math.PI);
}
startx = x + Math.round(Math.cos(startAngle) * radius);
starty = y + Math.round(Math.sin(startAngle) * radius);
endx = x + Math.round(Math.cos(endAngle) * radius);
endy = y + Math.round(Math.sin(endAngle) * radius);
if (startx === endx && starty === endy) {
if ((endAngle - startAngle) < Math.PI) {
// Prevent very small slices from being mistaken as a whole pie
return '';
}
// essentially going to be the entire circle, so ignore startAngle
startx = endx = x + radius;
starty = endy = y;
}
if (startx === endx && starty === endy && (endAngle - startAngle) < Math.PI) {
return '';
}
vpath = [x - radius, y - radius, x + radius, y + radius, startx, starty, endx, endy];
stroke = lineColor === undefined ? ' stroked="false" ' : ' strokeWeight="1px" strokeColor="' + lineColor + '" ';
fill = fillColor === undefined ? ' filled="false"' : ' fillColor="' + fillColor + '" filled="true" ';
vel = '<v:shape coordorigin="0 0" coordsize="' + this.pixelWidth + ' ' + this.pixelHeight + '" ' +
' id="jqsshape' + shapeid + '" ' +
stroke +
fill +
' style="position:absolute;left:0px;top:0px;height:' + this.pixelHeight + 'px;width:' + this.pixelWidth + 'px;padding:0px;margin:0px;" ' +
' path="m ' + x + ',' + y + ' wa ' + vpath.join(', ') + ' x e">' +
' </v:shape>';
return vel;
},
_drawRect: function (shapeid, x, y, width, height, lineColor, fillColor) {
return this._drawShape(shapeid, [[x, y], [x, y + height], [x + width, y + height], [x + width, y], [x, y]], lineColor, fillColor);
},
reset: function () {
this.group.innerHTML = '';
},
appendShape: function (shape) {
var vel = this['_draw' + shape.type].apply(this, shape.args);
if (this.rendered) {
this.group.insertAdjacentHTML('beforeEnd', vel);
} else {
this.prerender += vel;
}
this.lastShapeId = shape.id;
return shape.id;
},
replaceWithShape: function (shapeid, shape) {
var existing = $('#jqsshape' + shapeid),
vel = this['_draw' + shape.type].apply(this, shape.args);
existing[0].outerHTML = vel;
},
replaceWithShapes: function (shapeids, shapes) {
// replace the first shapeid with all the new shapes then toast the remaining old shapes
var existing = $('#jqsshape' + shapeids[0]),
replace = '',
slen = shapes.length,
i;
for (i = 0; i < slen; i++) {
replace += this['_draw' + shapes[i].type].apply(this, shapes[i].args);
}
existing[0].outerHTML = replace;
for (i = 1; i < shapeids.length; i++) {
$('#jqsshape' + shapeids[i]).remove();
}
},
insertAfterShape: function (shapeid, shape) {
var existing = $('#jqsshape' + shapeid),
vel = this['_draw' + shape.type].apply(this, shape.args);
existing[0].insertAdjacentHTML('afterEnd', vel);
},
removeShapeId: function (shapeid) {
var existing = $('#jqsshape' + shapeid);
this.group.removeChild(existing[0]);
},
getShapeAt: function (el, x, y) {
var shapeid = el.id.substr(8);
return shapeid;
},
render: function () {
if (!this.rendered) {
// batch the intial render into a single repaint
this.group.innerHTML = this.prerender;
this.rendered = true;
}
}
});
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