54 lines
1.3 KiB
JavaScript
54 lines
1.3 KiB
JavaScript
/*
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* @provide pskl.drawingtools.Move
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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.Move = function() {
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this.toolId = "tool-move";
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this.helpText = "Move tool";
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// Stroke'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.Move, ns.BaseTool);
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/**
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* @override
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*/
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ns.Move.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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this.frameClone = frame.clone();
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};
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ns.Move.prototype.moveToolAt = function(col, row, color, frame, overlay) {
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var colDiff = col - this.startCol, rowDiff = row - this.startRow;
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this.shiftFrame(colDiff, rowDiff, frame, this.frameClone);
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};
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ns.Move.prototype.shiftFrame = function (colDiff, rowDiff, frame, reference) {
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var color;
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for (var col = 0 ; col < frame.getWidth() ; col++) {
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for (var row = 0 ; row < frame.getHeight() ; row++) {
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if (reference.containsPixel(col - colDiff, row - rowDiff)) {
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color = reference.getPixel(col - colDiff, row - rowDiff);
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} else {
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color = Constants.TRANSPARENT_COLOR;
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}
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frame.setPixel(col, row, color);
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}
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}
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};
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/**
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* @override
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*/
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ns.Move.prototype.releaseToolAt = function(col, row, color, frame, overlay) {
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this.moveToolAt(col, row, color, frame, overlay);
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};
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})();
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