Fixing graphs for IE9 and probably above.

rhodecode/public/js/graph.js

@@ -1,123 +1,123 b''
 // branch_renderer.js - Rendering of branch DAGs on the client side
 //
 // Copyright 2010 Marcin Kuzminski <marcin AT python-works DOT com>
 // Copyright 2008 Jesper Noehr <jesper AT noehr DOT org>
 // Copyright 2008 Dirkjan Ochtman <dirkjan AT ochtman DOT nl>
 // Copyright 2006 Alexander Schremmer <alex AT alexanderweb DOT de>
 //
 // derived from code written by Scott James Remnant <[e-mail]>
 // Copyright 2005 Canonical Ltd.
 //
 // This software may be used and distributed according to the terms
 // of the GNU General Public License, incorporated herein by reference.
 
 var colors = [
 	[ 1.0, 0.0, 0.0 ],
 	[ 1.0, 1.0, 0.0 ],
 	[ 0.0, 1.0, 0.0 ],
 	[ 0.0, 1.0, 1.0 ],
 	[ 0.0, 0.0, 1.0 ],
 	[ 1.0, 0.0, 1.0 ],
 	[ 1.0, 1.0, 0.0 ],
 	[ 0.0, 0.0, 0.0 ]
 ];
 
 function BranchRenderer() {
 	
 	this.canvas = document.getElementById("graph_canvas");
 	
-	if (navigator.userAgent.indexOf('MSIE') >= 0) 
+	if (!document.createElement("canvas").getContext) 
 		this.canvas = window.G_vmlCanvasManager.initElement(this.canvas);
 	this.ctx = this.canvas.getContext('2d');
 	this.ctx.strokeStyle = 'rgb(0, 0, 0)';
 	this.ctx.fillStyle = 'rgb(0, 0, 0)';
 	this.cur = [0, 0];
 	this.line_width = 2.0;
 	this.dot_radius = 3.5;
 	
 	this.setColor = function(color, bg, fg) {
 		color %= colors.length;
 		var red = (colors[color][0] * fg) || bg;
 		var green = (colors[color][1] * fg) || bg;
 		var blue = (colors[color][2] * fg) || bg;
 		red = Math.round(red * 255);
 		green = Math.round(green * 255);
 		blue = Math.round(blue * 255);
 		var s = 'rgb(' + red + ', ' + green + ', ' + blue + ')';
 		this.ctx.strokeStyle = s;
 		this.ctx.fillStyle = s;
 	}
 
 	this.render = function(data,canvasWidth,lineCount) {
 		var idx = 1;
 		var rela = document.getElementById('graph');
 
 		if (lineCount == 0)
 			lineCount = 1;
 
 		var edge_pad = this.dot_radius + 2;
 		var box_size = Math.min(18, Math.floor((canvasWidth - edge_pad*2)/(lineCount)));
 		var base_x = canvasWidth - edge_pad;
 
 		for (var i in data) {
 
 			var row = document.getElementById("chg_"+idx);
 			if (row == null)
 				continue;
 			var	next = document.getElementById("chg_"+(idx+1));
 			var extra = 0;
 			
 			cur = data[i];
 			node = cur[1];
 			in_l = cur[2];
 
 			var rowY = row.offsetTop + row.offsetHeight/2 - rela.offsetTop;
 			var nextY = (next == null) ? rowY + row.offsetHeight/2 : next.offsetTop + next.offsetHeight/2 - rela.offsetTop;
 
 			for (var j in in_l) {
 				
 				line = in_l[j];
 				start = line[0];
 				end = line[1];
 				color = line[2];
 
 				this.setColor(color, 0.0, 0.65);
 
 				
 				x = base_x - box_size * start;
 				
 				this.ctx.lineWidth=this.line_width;
 				this.ctx.beginPath();
 				this.ctx.moveTo(x, rowY);
 
 				if (start == end)
 				{
 					this.ctx.lineTo(x,nextY+extra,3);
 				}
 				else
 				{
 					var x2 = base_x - box_size * end;
 					var ymid = (rowY+nextY) / 2;
 					this.ctx.bezierCurveTo (x,ymid,x2,ymid,x2,nextY);
 				}
 				this.ctx.stroke();
 			}
 			
 			column = node[0];
 			color = node[1];
 			
 			radius = this.dot_radius;
 
 			x = base_x - box_size * column;
 		
 			this.ctx.beginPath();
 			this.setColor(color, 0.25, 0.75);
 			this.ctx.arc(x, rowY, radius, 0, Math.PI * 2, true);
 			this.ctx.fill();
 			
 			idx++;
 		}
 				
 	}
 
 }