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// Setup a very simple "virtual canvas" to make drawing the few shapes we need easier
// This is accessible as $(foo).simpledraw()
VShape = createClass({
init: function (target, id, type, args) {
this.target = target;
this.id = id;
this.type = type;
this.args = args;
},
append: function () {
this.target.appendShape(this);
return this;
}
});
VCanvas_base = createClass({
_pxregex: /(\d+)(px)?\s*$/i,
init: function (width, height, target) {
if (!width) {
return;
}
this.width = width;
this.height = height;
this.target = target;
this.lastShapeId = null;
if (target[0]) {
target = target[0];
}
$.data(target, '_jqs_vcanvas', this);
},
drawLine: function (x1, y1, x2, y2, lineColor, lineWidth) {
return this.drawShape([[x1, y1], [x2, y2]], lineColor, lineWidth);
},
drawShape: function (path, lineColor, fillColor, lineWidth) {
return this._genShape('Shape', [path, lineColor, fillColor, lineWidth]);
},
drawCircle: function (x, y, radius, lineColor, fillColor, lineWidth) {
return this._genShape('Circle', [x, y, radius, lineColor, fillColor, lineWidth]);
},
drawPieSlice: function (x, y, radius, startAngle, endAngle, lineColor, fillColor) {
return this._genShape('PieSlice', [x, y, radius, startAngle, endAngle, lineColor, fillColor]);
},
drawRect: function (x, y, width, height, lineColor, fillColor) {
return this._genShape('Rect', [x, y, width, height, lineColor, fillColor]);
},
getElement: function () {
return this.canvas;
},
/**
* Return the most recently inserted shape id
*/
getLastShapeId: function () {
return this.lastShapeId;
},
/**
* Clear and reset the canvas
*/
reset: function () {
alert('reset not implemented');
},
_insert: function (el, target) {
$(target).html(el);
},
/**
* Calculate the pixel dimensions of the canvas
*/
_calculatePixelDims: function (width, height, canvas) {
// XXX This should probably be a configurable option
var match;
match = this._pxregex.exec(height);
if (match) {
this.pixelHeight = match[1];
} else {
this.pixelHeight = $(canvas).height();
}
match = this._pxregex.exec(width);
if (match) {
this.pixelWidth = match[1];
} else {
this.pixelWidth = $(canvas).width();
}
},
/**
* Generate a shape object and id for later rendering
*/
_genShape: function (shapetype, shapeargs) {
var id = shapeCount++;
shapeargs.unshift(id);
return new VShape(this, id, shapetype, shapeargs);
},
/**
* Add a shape to the end of the render queue
*/
appendShape: function (shape) {
alert('appendShape not implemented');
},
/**
* Replace one shape with another
*/
replaceWithShape: function (shapeid, shape) {
alert('replaceWithShape not implemented');
},
/**
* Insert one shape after another in the render queue
*/
insertAfterShape: function (shapeid, shape) {
alert('insertAfterShape not implemented');
},
/**
* Remove a shape from the queue
*/
removeShapeId: function (shapeid) {
alert('removeShapeId not implemented');
},
/**
* Find a shape at the specified x/y co-ordinates
*/
getShapeAt: function (el, x, y) {
alert('getShapeAt not implemented');
},
/**
* Render all queued shapes onto the canvas
*/
render: function () {
alert('render not implemented');
}
});