--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rhodecode/public/js/graph.js	Wed Oct 06 03:18:16 2010 +0200
@@ -0,0 +1,135 @@
+// 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 <scott@ubuntu.com>
+// 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) 
+		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.max_column = 1;
+	this.line_width = 2.5;
+	this.dot_radius = 5.5;
+	this.bg = [0, 4];
+	this.cell = [2, 0];
+	this.revlink = '';
+	
+	this.scale = function(height) {
+		this.box_size = Math.floor(height/1.2);
+		this.cell_height = this.box_size;
+		this.bg_height = height;
+	}
+	
+	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) {
+		var idx = 1;
+		var rela = document.getElementById('graph');
+		var pad = 160;
+		var scale = 22;
+		
+		for (var i in data) {
+			this.scale(scale);
+			var row = document.getElementById("chg_"+idx);
+			var	next = document.getElementById("chg_"+idx+1);
+			var extra = 0;
+			
+			//skip this since i don't have DATE in my app
+			//if (next.is('.changesets-date')) {
+			//	extra = next.outerHeight();
+			//}
+						
+			
+			this.cell[1] += row.clientWidth;
+			this.bg[1] += this.bg_height;
+			
+			cur = data[i];
+			nodeid = cur[0];
+			node = cur[1];
+			in_l = cur[2];
+			
+			for (var j in in_l) {
+				
+				line = in_l[j];
+				start = line[0];
+				end = line[1];
+				color = line[2];
+
+				if (start > this.max_column) {
+					this.max_column = start;
+				}
+				
+				if (end > this.max_column) {
+					this.max_column = end;
+				}
+				
+				this.setColor(color, 0.0, 0.65);
+				
+				
+				y = row.offsetTop-rela.offsetTop+4;
+				x = pad-((this.cell[0] + this.box_size * start - 1) + this.bg_height-2);
+				this.ctx.lineWidth=this.line_width;
+				this.ctx.beginPath();
+				this.ctx.moveTo(x, y);
+				
+				//i don't know why it's +1 just fixes some drawing graph.
+				y += row.clientHeight+1;
+				x = pad-((1 + this.box_size * end) + this.bg_height-2);
+				this.ctx.lineTo(x,y+extra,3);
+				this.ctx.stroke();
+			}
+			
+			column = node[0]
+			color = node[1]
+			
+			radius = this.dot_radius;
+			y = row.offsetTop-rela.offsetTop+4;
+			x = pad-(Math.round(this.cell[0] * scale/2 * column + radius) + 15 - (column*4));
+		
+			this.ctx.beginPath();
+			this.setColor(color, 0.25, 0.75);
+			this.ctx.arc(x, y, radius, 0, Math.PI * 2, true);
+			this.ctx.fill();
+			
+			idx++;
+		}
+				
+	}
+
+}