crop update - on CTRL key, it will keep global ratio

src/js/tools/crop.js

@@ -107,6 +107,26 @@ class Crop_class extends Base_tools_class {
 
 		var width = mouse.x - mouse.click_x;
 		var height = mouse.y - mouse.click_y;
+
+		if(event.ctrlKey == true || event.metaKey){
+			//ctrl is pressed - crop will be calculated based on global width and height ratio
+			var ratio = config.WIDTH / config.HEIGHT;
+			var width_new = Math.round(height * config.WIDTH / config.HEIGHT);
+			var height_new = Math.round(width * config.HEIGHT / config.WIDTH);
+
+			if(Math.abs(width * 100 / width_new) > Math.abs(height * 100 / height_new)){
+				if (width * 100 / width_new > 0)
+					height = height_new;
+				else
+					height = -height_new;
+			}
+			else{
+				if (height * 100 / height_new > 0)
+					width = width_new;
+				else
+					width = -width_new;
+			}
+		}
 
 		this.Base_selection.set_selection(null, null, width, height);
 	}