Merge branch 'master' into gh-pages

js/drawingtools/Move.js

@@ -0,0 +1,58 @@
+/*
+ * @provide pskl.drawingtools.Move
+ *
+ * @require pskl.utils
+ */
+(function() {
+	var ns = $.namespace("pskl.drawingtools");
+
+	ns.Move = function() {
+		this.toolId = "tool-move"
+		
+		// Stroke's first point coordinates (set in applyToolAt)
+		this.startCol = null;
+		this.startRow = null;
+		
+		this.canvasOverlay = null;
+	};
+
+	pskl.utils.inherit(ns.Move, ns.BaseTool);
+	
+	/**
+	 * @override
+	 */
+	ns.Move.prototype.applyToolAt = function(col, row, color, drawer) {
+		this.startCol = col;
+		this.startRow = row;
+		this.frameClone = drawer.frame.clone();
+	};
+
+	ns.Move.prototype.moveToolAt = function(col, row, color, drawer) {	
+		var colDiff = col - this.startCol, rowDiff = row - this.startRow;
+		if (colDiff != 0 || rowDiff != 0) {
+			this.shiftFrame(colDiff, rowDiff, drawer.frame, this.frameClone);
+			drawer.renderFrame();
+		}
+	};
+
+	ns.Move.prototype.shiftFrame = function (colDiff, rowDiff, frame, reference) {
+		var color;
+		for (var col = 0 ; col < frame.getWidth() ; col++) {
+			for (var row = 0 ; row < frame.getHeight() ; row++) {
+				if (reference.containsPixel(col - colDiff, row - rowDiff)) {
+					color = reference.getPixel(col - colDiff, row - rowDiff);
+				} else {
+					color = Constants.TRANSPARENT_COLOR;
+				}
+				frame.setPixel(col, row, color)
+			}
+		}
+	};
+
+	/**
+	 * @override
+	 */
+	ns.Move.prototype.releaseToolAt = function(col, row, color, drawer) {
+		this.moveToolAt(col, row, color, drawer);
+	};
+})();