/*
 * ext-shapes.js
 *
 * Licensed under the Apache License, Version 2
 *
 * Copyright(c) 2010 Christian Tzurcanu
 * Copyright(c) 2010 Alexis Deveria
 *
 */

svgEditor.addExtension("shapes", function() {
	

	var current_d, cur_shape_id;
	var canv = svgEditor.canvas;
	var cur_shape;
	var start_x, start_y;
	var svgroot = canv.getRootElem();
	var lastBBox = {};
	
	// This populates the category list
	var categories = {
		basic: 'Basic',
		object: 'Objects',
		symbol: 'Symbols',
		arrow: 'Arrows',
		flowchart: 'Flowchart',
		nature: 'Nature',
		game: 'Cards & Chess',
		dialog_balloon: 'Dialog balloons',
		music: 'Music',
		weather: 'Weather & Time',
		ui: 'User Interface',
		social: 'Social Web'
	};
	
	var library = {
		'basic': {
			data: {
				"star_points_5": "m1,116.58409l113.82668,0l35.17332,-108.13487l35.17334,108.13487l113.82666,0l-92.08755,66.83026l35.17514,108.13487l-92.08759,-66.83208l-92.08757,66.83208l35.17515,-108.13487l-92.08758,-66.83026z",
				'donut': 'm1,150l0,0c0,-82.29042 66.70958,-149 149,-149l0,0c39.51724,0 77.41599,15.69816 105.35889,43.64108c27.94293,27.94293 43.64111,65.84165 43.64111,105.35892l0,0c0,82.29041 -66.70958,149 -149,149l0,0c-82.29041,0 -149,-66.70959 -149,-149zm74.5,0l0,0c0,41.1452 33.35481,74.5 74.5,74.5c41.14522,0 74.5,-33.3548 74.5,-74.5c0,-41.1452 -33.3548,-74.5 -74.5,-74.5l0,0c-41.14519,0 -74.5,33.35481 -74.5,74.5z',
				"triangle": "m1,280.375l149,-260.75l149,260.75z",
				"right_triangle": "m1,299l0,-298l298,298z",
				"diamond": "m1,150l149,-149l149,149l-149,149l-149,-149z",
				"pentagon": "m1.00035,116.97758l148.99963,-108.4053l148.99998,108.4053l-56.91267,175.4042l-184.1741,0l-56.91284,-175.4042z",
				"hexagon": "m1,149.99944l63.85715,-127.71428l170.28572,0l63.85713,127.71428l-63.85713,127.71428l-170.28572,0l-63.85715,-127.71428z",
				"septagon1": "m0.99917,191.06511l29.51249,-127.7108l119.48833,-56.83673l119.48836,56.83673l29.51303,127.7108l-82.69087,102.41679l-132.62103,0l-82.69031,-102.41679z",
				"heptagon": "m1,88.28171l87.28172,-87.28171l123.43653,0l87.28172,87.28171l0,123.43654l-87.28172,87.28172l-123.43653,0l-87.28172,-87.28172l0,-123.43654z",
				"decagon": "m1,150.00093l28.45646,-88.40318l74.49956,-54.63682l92.08794,0l74.50002,54.63682l28.45599,88.40318l-28.45599,88.40318l-74.50002,54.63681l-92.08794,0l-74.49956,-54.63681l-28.45646,-88.40318z",
				"dodecagon": "m1,110.07421l39.92579,-69.14842l69.14842,-39.92579l79.85159,0l69.14842,39.92579l39.92578,69.14842l0,79.85159l-39.92578,69.14842l-69.14842,39.92578l-79.85159,0l-69.14842,-39.92578l-39.92579,-69.14842l0,-79.85159z",
				"trapezoid": "m1,299l55.875,-298l186.25001,0l55.87498,298z",
				"dialog_balloon_1": "m0.99786,35.96579l0,0c0,-19.31077 15.28761,-34.96524 34.14583,-34.96524l15.52084,0l0,0l74.50001,0l139.68748,0c9.05606,0 17.74118,3.68382 24.14478,10.24108c6.40356,6.55726 10.00107,15.45081 10.00107,24.72416l0,87.41311l0,0l0,52.44785l0,0c0,19.31078 -15.2876,34.96524 -34.14584,34.96524l-139.68748,0l-97.32507,88.90848l22.82506,-88.90848l-15.52084,0c-18.85822,0 -34.14583,-15.65446 -34.14583,-34.96524l0,0l0,-52.44785l0,0z",
				'heart': 'm150,73c61,-175 300,0 0,225c-300,-225 -61,-400 0,-225z',
				"cylinder": "m299.0007,83.77844c0,18.28676 -66.70958,33.11111 -149.00002,33.11111m149.00002,-33.11111l0,0c0,18.28676 -66.70958,33.11111 -149.00002,33.11111c-82.29041,0 -148.99997,-14.82432 -148.99997,-33.11111m0,0l0,0c0,-18.28674 66.70956,-33.1111 148.99997,-33.1111c82.29044,0 149.00002,14.82436 149.00002,33.1111l0,132.44449c0,18.28674 -66.70958,33.11105 -149.00002,33.11105c-82.29041,0 -148.99997,-14.82431 -148.99997,-33.11105z",
				"arrow_up": "m1.49805,149.64304l148.50121,-148.00241l148.50121,148.00241l-74.25061,0l0,148.71457l-148.5012,0l0,-148.71457z",
				"arrow_u_turn": "m1.00059,299.00055l0,-167.62497l0,0c0,-72.00411 58.37087,-130.37499 130.375,-130.37499l0,0l0,0c34.57759,0 67.73898,13.7359 92.18906,38.18595c24.45006,24.45005 38.18593,57.61144 38.18593,92.18904l0,18.625l37.24997,0l-74.49995,74.50002l-74.50002,-74.50002l37.25,0l0,-18.625c0,-30.8589 -25.0161,-55.87498 -55.87498,-55.87498l0,0l0,0c-30.85892,0 -55.875,25.01608 -55.875,55.87498l0,167.62497z",
				"arrow_left_up": "m0.99865,224.5l74.50004,-74.5l0,37.25l111.74991,0l0,-111.75l-37.25,0l74.5,-74.5l74.5,74.5l-37.25,0l0,186.25l-186.24989,0l0,37.25l-74.50005,-74.5z",
				"plaque": "m-0.00197,49.94376l0,0c27.5829,0 49.94327,-22.36036 49.94327,-49.94327l199.76709,0l0,0c0,27.5829 22.36037,49.94327 49.94325,49.94327l0,199.7671l0,0c-27.58289,0 -49.94325,22.36034 -49.94325,49.94325l-199.76709,0c0,-27.58292 -22.36037,-49.94325 -49.94327,-49.94325z",
				"page": "m249.3298,298.99744l9.9335,-39.73413l39.73413,-9.93355l-49.66763,49.66768l-248.33237,0l0,-298.00001l298.00001,0l0,248.33234",
				"cross": "m0.99844,99.71339l98.71494,0l0,-98.71495l101.26279,0l0,98.71495l98.71495,0l0,101.2628l-98.71495,0l0,98.71494l-101.26279,0l0,-98.71494l-98.71494,0z",
				"divide": "m150,0.99785l0,0c25.17819,0 45.58916,20.41097 45.58916,45.58916c0,25.17821 -20.41096,45.58916 -45.58916,45.58916c-25.17822,0 -45.58916,-20.41093 -45.58916,-45.58916c0,-25.1782 20.41093,-45.58916 45.58916,-45.58916zm0,296.25203c-25.17822,0 -45.58916,-20.41095 -45.58916,-45.58917c0,-25.17819 20.41093,-45.58916 45.58916,-45.58916c25.17819,0 45.58916,20.41096 45.58916,45.58916c0,25.17822 -20.41096,45.58917 -45.58916,45.58917zm-134.06754,-193.71518l268.13507,0l0,91.17833l-268.13507,0z",
				"minus": "m0.99887,102.39503l297.49445,0l0,95.2112l-297.49445,0z",
				"times": "m1.00089,73.36786l72.36697,-72.36697l76.87431,76.87368l76.87431,-76.87368l72.36765,72.36697l-76.87433,76.87431l76.87433,76.87431l-72.36765,72.36765l-76.87431,-76.87433l-76.87431,76.87433l-72.36697,-72.36765l76.87368,-76.87431l-76.87368,-76.87431z"
				

			},
			buttons: []
		}
	};
	
	var cur_lib = library.basic;
	
	var mode_id = 'shapelib';
	
	function loadIcons() {
		$('#shape_buttons').empty();
		
		// Show lib ones
		$('#shape_buttons').append(cur_lib.buttons);
	}
	
	function loadLibrary(cat_id) {
	
		var lib = library[cat_id];
		
		if(!lib) {
			$('#shape_buttons').html('Loading...');
			$.getJSON('extensions/shapelib/' + cat_id + '.json', function(result, textStatus) {
				cur_lib = library[cat_id] = {
					data: result.data,
					size: result.size,
					fill: result.fill
				}
				makeButtons(cat_id, result);
				loadIcons();
			});
			return;
		}
		
		cur_lib = lib;
		if(!lib.buttons.length)	makeButtons(cat_id, lib);
		loadIcons();
	}
	
	function makeButtons(cat, shapes) {
		var size = cur_lib.size || 300;
		var fill = cur_lib.fill || false;
		var off = size * .05;
		var vb = [-off, -off, size + off*2, size + off*2].join(' ');
		var stroke = fill ? 0: (size/30);
		
		var shape_icon = new DOMParser().parseFromString(
			'<svg xmlns="http://www.w3.org/2000/svg"><svg viewBox="' + vb + '"><path fill="#333" stroke="transparent" stroke-width="' + stroke + '" /><\/svg><\/svg>',
			'text/xml');

		var width = 40;
		var height = 40;
		shape_icon.documentElement.setAttribute('width', width);
		shape_icon.documentElement.setAttribute('height', height);
		var svg_elem = $(document.importNode(shape_icon.documentElement,true));
	
		var data = shapes.data;
		
		cur_lib.buttons = [];
	
		for(var id in data) {
			var path_d = data[id];
			var icon = svg_elem.clone();
			icon.find('path').attr('d', path_d);
			
			var icon_btn = icon.wrap('<div class="tool_button">').parent().attr({
				id: mode_id + '_' + id,
				title: id
			});
			
			
			// Store for later use
			cur_lib.buttons.push(icon_btn[0]);
		}
		
	}

	
	return {
		svgicons: "extensions/ext-shapes.xml",
		buttons: [{
			id: "tool_shapelib",
			type: "mode_flyout", // _flyout
			position: 6,
			title: "Shape library",
			icon: "extensions/ext-shapes.png",
			events: {
				"click": function() {
					canv.setMode(mode_id);
				}
			}
		}],
		callback: function() {

		
			var btn_div = $('<div id="shape_buttons">');
			$('#tools_shapelib > *').wrapAll(btn_div);
			
			var shower = $('#tools_shapelib_show');

			
			loadLibrary('basic');
			
			// Do mouseup on parent element rather than each button
			$('#shape_buttons').mouseup(function(evt) {
				var btn = $(evt.target).closest('div.tool_button');
				
				if(!btn.length) return;
				
   			var copy = btn.children().clone().attr({width: 24, height: 24});
   			shower.children(':not(.flyout_arrow_horiz)').remove();
   			shower
   				.append(copy)
   				.attr('data-curopt', '#' + btn[0].id) // This sets the current mode
   				.mouseup();
   			canv.setMode(mode_id);
				
				cur_shape_id = btn[0].id.substr((mode_id+'_').length);
				current_d = cur_lib.data[cur_shape_id];
				
				$('.tools_flyout').fadeOut();

			});

// 			
			var shape_cats = $('<div id="shape_cats">');
			var cat_str = '';
			
			$.each(categories, function(id, label) {
				cat_str += '<div data-cat=' + id + '>' + label + '</div>';
			});
			
			shape_cats.html(cat_str).children().bind('mouseup', function() {
				var catlink = $(this);
				catlink.siblings().removeClass('current');
				catlink.addClass('current');
				
				loadLibrary(catlink.attr('data-cat'));
				// Get stuff
				
				return false;
			});
			
			shape_cats.children().eq(0).addClass('current');
			
			$('#tools_shapelib').prepend(shape_cats);

			shower.mouseup(function() {
				canv.setMode(current_d ? mode_id : 'select');
			});

			
			$('#tool_shapelib').remove();
			
			var h = $('#tools_shapelib').height();
			$('#tools_shapelib').css({
				'margin-top': -(h/2),
				'margin-left': 3
			});

	
		},
		mouseDown: function(opts) {
			var mode = canv.getMode();
			if(mode !== mode_id) return;
			
			var e = opts.event;
			var x = start_x = opts.start_x;
			var y = start_y = opts.start_y;
			var cur_style = canv.getStyle();
			cur_shape = canv.addSvgElementFromJson({
				"element": "path",
				"curStyles": true,
				"attr": {
					"d": current_d,
					"id": canv.getNextId(),
					"opacity": cur_style.opacity / 2,
					"style": "pointer-events:none"
				}
			});
      cur_shape.setAttribute("d", current_d);
			// Make sure shape uses absolute values
			if(/[a-z]/.test(current_d)) {
				current_d = cur_lib.data[cur_shape_id] = canv.pathActions.convertPath(cur_shape);
				cur_shape.setAttribute('d', current_d);
				canv.pathActions.fixEnd(cur_shape);
			}
	    
			cur_shape.setAttribute('transform', "translate(" + x + "," + y + ") scale(0.005) translate(" + -x + "," + -y + ")");			
// 			console.time('b');
			canv.recalculateDimensions(cur_shape);
			var tlist = canv.getTransformList(cur_shape);
			lastBBox = cur_shape.getBBox();
			totalScale = {
			  sx: 1,
			  sy: 1
			};
			return {
				started: true
			}
			// current_d
		},
		mouseMove: function(opts) {
			var mode = canv.getMode();
			if(mode !== mode_id) return;
			
			var zoom = canv.getZoom();
			var evt = opts.event
			
			var x = opts.mouse_x/zoom;
			var y = opts.mouse_y/zoom;
			
			var tlist = canv.getTransformList(cur_shape),
				box = cur_shape.getBBox(), 
				left = box.x, top = box.y, width = box.width,
				height = box.height;
			var dx = (x-start_x), dy = (y-start_y);

			var newbox = {
				'x': Math.min(start_x,x),
				'y': Math.min(start_y,y),
				'width': Math.abs(x-start_x),
				'height': Math.abs(y-start_y)
			};

			var ts = null,
				tx = 0, ty = 0,
				sy = height ? (height+dy)/height : 1, 
				sx = width ? (width+dx)/width : 1;

			var sx = newbox.width / lastBBox.width;
			var sy = newbox.height / lastBBox.height;
			
			sx = sx || 1;
			sy = sy || 1;
			
			// Not perfect, but mostly works...
			
			if(x < start_x) {
				tx = lastBBox.width;
			}
			if(y < start_y) ty = lastBBox.height;
			
			// update the transform list with translate,scale,translate
			var translateOrigin = svgroot.createSVGTransform(),
				scale = svgroot.createSVGTransform(),
				translateBack = svgroot.createSVGTransform();
				
			translateOrigin.setTranslate(-(left+tx), -(top+ty));
			if(evt.shiftKey) {
			  replaced = true
				var max = Math.min(Math.abs(sx), Math.abs(sy));
				sx = max * (sx < 0 ? -1 : 1);
				sy = max * (sy < 0 ? -1 : 1);
				if (totalScale.sx != totalScale.sy) {
  				var multiplierX = (totalScale.sx > totalScale.sy) ? 1 : totalScale.sx/totalScale.sy;
  				var multiplierY = (totalScale.sy > totalScale.sx) ? 1 : totalScale.sy/totalScale.sx;
  				sx *= multiplierY
  				sy *= multiplierX
				}
			}
			totalScale.sx *= sx;
		  totalScale.sy *= sy;
		  scale.setScale(sx,sy);
			translateBack.setTranslate(left+tx, top+ty);
			var N = tlist.numberOfItems;
			tlist.appendItem(translateBack);
			tlist.appendItem(scale);
			tlist.appendItem(translateOrigin);

			canv.recalculateDimensions(cur_shape);
			lastBBox = cur_shape.getBBox();
		},
		mouseUp: function(opts) {
			var mode = canv.getMode();
			if(mode !== mode_id) return;
			
			if(opts.mouse_x == start_x && opts.mouse_y == start_y) {
				return {
					keep: false,
					element: cur_shape,
					started: false
				}
			}
			canv.setMode("select")
			return {
				keep: true,
				element: cur_shape,
				started: false
			}
		}		
	}
});