From b6a1128fd1557618eb7694561d60a5eb16cbac1f Mon Sep 17 00:00:00 2001
From: Alexis Deveria <adeveria@gmail.com>
Date: Wed, 16 Sep 2009 14:12:51 +0000
Subject: [PATCH] Added support for 'Fit to ...' zoom options

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@653 eee81c28-f429-11dd-99c0-75d572ba1ddd
---
 editor/svg-editor.js | 17 ++++++++++++--
 editor/svgcanvas.js  | 53 +++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 65 insertions(+), 5 deletions(-)

diff --git a/editor/svg-editor.js b/editor/svg-editor.js
index 8e77ded4..1486f482 100644
--- a/editor/svg-editor.js
+++ b/editor/svg-editor.js
@@ -422,13 +422,26 @@ function svg_edit_setup() {
 		$('#zoom_dropdown li').bind('mouseup',function() {
 			var item = $(this);
 			var val = item.attr('data-val');
+			var res = svgCanvas.getResolution();
+			var scrbar = 15;
 			if(val) {
-				//TODO: Calculate proper zoom from here.
+				var w_area = $('#workarea');
+				var z_info = svgCanvas.setBBoxZoom(val, w_area.width()-scrbar, w_area.height()-scrbar);
+				if(!z_info) return;
+				var zoomlevel = z_info.zoom;
+				var bb = z_info.bbox;
+				$('#zoom').val(zoomlevel*100);
+				setResolution(res.w * zoomlevel, res.h * zoomlevel);
+				var scrLeft = bb.x * zoomlevel;
+				var scrOffX = w_area.width()/2 - (bb.width * zoomlevel)/2;
+				w_area[0].scrollLeft = Math.max(0,scrLeft - scrOffX);
+				var scrTop = bb.y * zoomlevel;
+				var scrOffY = w_area.height()/2 - (bb.height * zoomlevel)/2;
+				w_area[0].scrollTop = Math.max(0,scrTop - scrOffY);
 			} else {
 				var percent = parseInt(item.text());
 				$('#zoom').val(percent);
 				var zoomlevel = percent/100;
-				var res = svgCanvas.getResolution();
 				setResolution(res.w * zoomlevel, res.h * zoomlevel, true);
 				svgCanvas.setZoom(zoomlevel);
 			}
diff --git a/editor/svgcanvas.js b/editor/svgcanvas.js
index 6774f213..d70ac0e1 100644
--- a/editor/svgcanvas.js
+++ b/editor/svgcanvas.js
@@ -2591,14 +2591,61 @@ function BatchCommand(text) {
 		}
 	};
 
+	this.setBBoxZoom = function(type, editor_w, editor_h) {
+		var spacer = .85;
+		var w_zoom, h_zoom;
+		
+		switch ( type ) {
+			case 'selection':
+				if(!selectedElements[0]) return;
+				var bb = selectedBBoxes[0];
+				$.each(selectedBBoxes, function(i, sel) {
+					if(!sel || !i) return;
+					
+					// FIXME: Calculations still need some work...
+					bb.x = Math.min(bb.x, sel.x);
+					bb.y = Math.min(bb.y, sel.y);
+					bb.width = Math.max(sel.width + sel.x, bb.width + bb.x) - bb.x;
+					bb.height = Math.max(sel.height + sel.y, bb.height + bb.y) - bb.y;
+				});
+
+				w_zoom = Math.round((editor_w / bb.width)*100 * spacer)/100;
+				h_zoom = Math.round((editor_h / bb.height)*100 * spacer)/100;	
+				var zoomlevel = Math.min(w_zoom,h_zoom);
+				canvas.setZoom(zoomlevel);
+				return {'zoom': zoomlevel, 'bbox': bb};
+
+			case 'canvas':
+				spacer = .95;
+				var res = canvas.getResolution();
+				w_zoom = Math.round((editor_w / res.w)*100)/100;
+				h_zoom = Math.round((editor_h / res.h)*100)/100;
+				var zoomlevel = Math.min(w_zoom, h_zoom);
+				canvas.setZoom(zoomlevel);
+				return {'zoom': zoomlevel, 'bbox': {width:res.w, height:res.h ,x:0, y:0}};
+
+			case 'content':
+				var bb = svgzoom.getBBox();
+				w_zoom = Math.round((editor_w / bb.width)*100 * spacer)/100;
+				h_zoom = Math.round((editor_h / bb.height)*100 * spacer)/100;	
+				var zoomlevel = Math.min(w_zoom,h_zoom);
+				canvas.setZoom(zoomlevel);
+				return {'zoom': zoomlevel, 'bbox': bb};
+
+			default:
+				return;
+		}
+	}
+
 	this.setZoom = function(zoomlevel) {
 		var res = canvas.getResolution();
 		svgroot.setAttribute("width", res.w * zoomlevel);
 		svgroot.setAttribute("height", res.h * zoomlevel);
 		current_zoom = zoomlevel;
-		if(selectedElements[0]) {
-			selectorManager.requestSelector(selectedElements[0]).resize();
-		}
+		$.each(selectedElements, function(i, elem) {
+			if(!elem) return;
+			selectorManager.requestSelector(elem).resize();
+		});
 	}
 
 	this.getMode = function() {