Merge with master

Author: Phrogz

context_blender.js

@@ -1,4 +1,4 @@
-if (window.CanvasRenderingContext2D){
+if (window.CanvasRenderingContext2D && CanvasRenderingContext2D.prototype.getImageData){
 	var defaultOffsets = {
 		destX   : 0,
 		destY   : 0,
@@ -138,8 +138,8 @@ if (window.CanvasRenderingContext2D){
 		}
 		destContext.putImageData(dstD,offsets.destX,offsets.destY);
 	};
-	// For other libraries to ask if a blend mode is supported
-	var modes  = CanvasRenderingContext2D.prototype.blendOnto.supportedModes = 'normal src-over screen multiply difference src-in plus add'.split(' ');
-	var lookup = CanvasRenderingContext2D.prototype.blendOnto.supports = {};
-	for (var i=0,len=modes.length;i<len;++i) lookup[modes[i]] = true;
+	// For querying of functionality from other libraries
+	var modes = CanvasRenderingContext2D.prototype.blendOnto.supportedBlendModes = 'normal src-over screen multiply difference src-in plus add'.split(' ');
+	var supports = CanvasRenderingContext2D.prototype.blendOnto.supports = {};
+	for (var i=0,len=modes.length;i<len;++i) supports[modes[i]] = true;
 }

test/writeImageAsJS.jsx

@@ -0,0 +1,77 @@
+app.bringToFront();
+$.level = 0; // debug level: 0-2 (0:disable, 1:break on error, 2:break at beginning)
+
+function getPixels32( doc ){
+	var origRuler   = app.preferences.rulerUnits;
+	var origDialogs = app.displayDialogs;
+	app.preferences.rulerUnits = Units.PIXELS;
+	app.displayDialogs = DialogModes.NO;
+
+	var dup = doc.duplicate("tmpFlat",true);
+	var w = dup.width.value;
+	var h = dup.height.value;
+	var rgba=[];
+
+	var sampler = dup.colorSamplers.add( [UnitValue(0.5,"px"), UnitValue(0.5,"px")] );
+	
+	var px=0;
+	for (var y=0;y<h;++y){
+		for (var x=0;x<w;++x){
+			sampler.move([UnitValue(x+0.5,"px"),UnitValue(y+0.5,"px")]);
+			
+			rgba[px  ] = 0;
+			rgba[px+1] = 0;
+			rgba[px+2] = 0;
+			try{
+				// The color sampler errors on fully-transparent pixels
+				var rgb = sampler.color.rgb;
+				rgba[px  ] = rgb.red.toFixed(2).replace('.00','');
+				rgba[px+1] = rgb.green.toFixed(2).replace('.00','');
+				rgba[px+2] = rgb.blue.toFixed(2).replace('.00','');
+			}catch(e){}
+			px += 4;
+		}
+	}
+
+	var black = new SolidColor;
+	black.rgb.red = black.rgb.green = black.rgb.blue = 0;
+	dup.selection.selectAll();
+	dup.selection.fill(black,ColorBlendMode.NORMAL,100,true);
+	dup.flatten();
+
+	var px=0;
+	for (var y=0;y<h;++y){
+		for (var x=0;x<w;++x){
+			sampler.move([UnitValue(x+0.5,"px"),UnitValue(y+0.5,"px")]);
+			rgba[px+3] = (255 - sampler.color.rgb.red).toFixed(2).replace('.00','');
+			px += 4;
+		}
+	}
+	sampler.remove();
+	
+	dup.close( SaveOptions.DONOTSAVECHANGES );
+	app.preferences.rulerUnits  = origRuler;
+	app.displayDialogs          = origDialogs;
+	
+	return {width:w, height:h,rgba:rgba};
+}
+
+var start = new Date;
+var px = getPixels32( app.activeDocument );
+var lap = new Date;
+var readTime = (lap-start)/1000;
+
+var outFile = "/C/photoshop_colors.js";
+var output = new File(outFile);
+output.open("w");
+output.writeln("var img = {");
+output.writeln("\twidth:"+px.width+",\n\theight:"+px.height+",");
+output.writeln("\trgba:["+px.rgba.join(',')+"]");
+output.writeln("};");
+output.close();
+var stop = new Date;
+var writeTime = (stop-lap)/1000;
+
+var msg = "Read "+px.width*px.height+"pixels in "+readTime.toFixed(1)+"s";
+msg += "\nWrote to '"+outFile+"' in "+writeTime.toFixed(1)+"s";
+alert( msg );