58 lines
1.5 KiB
JavaScript
58 lines
1.5 KiB
JavaScript
/*
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* @provide pskl.drawingtools.Rectangle
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*
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* @require pskl.utils
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*/
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(function() {
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var ns = $.namespace("pskl.drawingtools");
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ns.Rectangle = function() {
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this.toolId = "tool-rectangle"
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// Rectangle's first point coordinates (set in applyToolAt)
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this.startCol = null;
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this.startRow = null;
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};
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pskl.utils.inherit(ns.Rectangle, ns.BaseTool);
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/**
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* @override
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*/
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ns.Rectangle.prototype.applyToolAt = function(col, row, color, frame, overlay) {
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this.startCol = col;
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this.startRow = row;
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// Drawing the first point of the rectangle in the fake overlay canvas:
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overlay.setPixel(col, row, color);
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};
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ns.Rectangle.prototype.moveToolAt = function(col, row, color, frame, overlay) {
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overlay.clear();
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if(color == Constants.TRANSPARENT_COLOR) {
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color = Constants.SELECTION_TRANSPARENT_COLOR;
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}
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// draw in overlay
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this.drawRectangle(col, row, color, overlay);
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};
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/**
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* @override
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*/
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ns.Rectangle.prototype.releaseToolAt = function(col, row, color, frame, overlay) {
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overlay.clear();
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if(frame.containsPixel(col, row)) { // cancel if outside of canvas
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// draw in frame to finalize
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this.drawRectangle(col, row, color, frame);
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}
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};
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ns.Rectangle.prototype.drawRectangle = function (col, row, color, targetFrame) {
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var strokePoints = pskl.PixelUtils.getBoundRectanglePixels(this.startCol, this.startRow, col, row);
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for(var i = 0; i< strokePoints.length; i++) {
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// Change model:
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targetFrame.setPixel(strokePoints[i].col, strokePoints[i].row, color);
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}
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}
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})();
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