76 lines
1.7 KiB
JavaScript
76 lines
1.7 KiB
JavaScript
function Canvas(element)
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{
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Module.call(this);
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this.parameters = [Rect,Color,Bang];
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this.element = element;
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this.active = function(cmd)
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{
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if(cmd.bang()){ this.clear(); }
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if(cmd.rect()){
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this.resize(cmd.rect());
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ronin.overlay.resize(cmd.rect());
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}
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if(cmd.color()){
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this.context().beginPath();
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this.context().rect(0, 0, this.element.width, this.element.height);
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this.context().fillStyle = cmd.color().hex;
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this.context().fill();
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}
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}
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this.passive = function(cmd)
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{
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if(cmd.rect()){
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ronin.overlay.show_guide(null,cmd.rect());
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}
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}
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//
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this.resize = function(rect)
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{
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this.element.setAttribute('width',rect.width+"px");
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this.element.setAttribute('height',rect.height+"px");
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this.element.style.left = (window.innerWidth/2)-(rect.width/2);
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this.element.style.top = (window.innerHeight/2)-(rect.height/2);
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}
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this.context = function()
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{
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return this.element.getContext('2d');
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}
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this.clear = function()
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{
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this.context().clearRect(0, 0, this.element.width, this.element.height);
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}
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// Drag
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this.drag_from = null;
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this.drag_start = function(e)
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{
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this.drag_from = new Position(e.clientX,e.clientY);
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}
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this.drag = function(e)
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{
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if(e.which != 2){ return; }
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var offset_x = this.drag_from.x - e.clientX;
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this.element.style.left = parseInt(this.element.style.left) - offset_x;
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var offset_y = this.drag_from.y - e.clientY;
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this.element.style.top = parseInt(this.element.style.top) - offset_y;
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this.drag_from = new Position(e.clientX,e.clientY);
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}
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this.drag_stop = function(e)
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{
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this.drag_from = null;
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}
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} |