# HG changeset patch
# User robcast
# Date 1337275768 -7200
# Node ID 1e4f4964e9c2a24412fed1905918b0227c77284d
# Parent  7a815e1a6d96ba0775421cca6e1e8d9d22dd39fa
CLOSED - # 25: scroll arrows have wrong direction with mirror and rot
https://it-dev.mpiwg-berlin.mpg.de/tracs/digilib/ticket/25

diff -r 7a815e1a6d96 -r 1e4f4964e9c2 webapp/src/main/webapp/jquery/jquery.digilib.arrows.js
--- a/webapp/src/main/webapp/jquery/jquery.digilib.arrows.js	Fri May 04 16:23:56 2012 +0200
+++ b/webapp/src/main/webapp/jquery/jquery.digilib.arrows.js	Thu May 17 19:29:28 2012 +0200
@@ -14,7 +14,7 @@
     var defaults = {
         // arrow bars for moving the zoomed area
         'showZoomArrows' : true,
-        // by what percentage should the arrows move the zoomed area?
+        // by what fraction should the arrows move the zoomed area?
         'zoomArrowMoveFactor' : 0.5,
         // defaults for digilib buttons
         'buttonSettings' : {
@@ -66,8 +66,16 @@
         moveZoomArea : function(data, dx, dy) {
             var za = data.zoomArea.copy();
             var factor = data.settings.zoomArrowMoveFactor;
-            var deltaX = dx * factor * za.width;
-            var deltaY = dy * factor * za.height;
+            // rotate and mirror change direction of cooordinate system
+            var trafo = data.imgTrafo;
+            var tdx = (trafo.m00 > 0) ? dx : -dx;
+            var tdy = (trafo.m11 > 0) ? dy : -dy;
+            if (Math.abs(trafo.m00) < Math.abs(trafo.m01)) {
+                tdx = (trafo.m01 > 0) ? -dy : dy;
+                tdy = (trafo.m10 > 0) ? -dx : dx;
+            }
+            var deltaX = tdx * factor * za.width;
+            var deltaY = tdy * factor * za.height;
             var delta = geom.position(deltaX, deltaY);
             za.addPosition(delta);
             za = FULL_AREA.fit(za);
diff -r 7a815e1a6d96 -r 1e4f4964e9c2 webapp/src/main/webapp/jquery/jquery.digilib.geometry.js
--- a/webapp/src/main/webapp/jquery/jquery.digilib.geometry.js	Fri May 04 16:23:56 2012 +0200
+++ b/webapp/src/main/webapp/jquery/jquery.digilib.geometry.js	Thu May 17 19:29:28 2012 +0200
@@ -368,8 +368,7 @@
         }
         ;
         that.concat = function(trafA) {
-            // add Transform trafA to this Transform (i.e. this = trafC = trafA
-            // * this)
+            // add Transform trafA to this Transform (i.e. this = trafC = trafA * this)
             var trafC = {};
             for ( var i = 0; i < 3; i++) {
                 for ( var j = 0; j < 3; j++) {
diff -r 7a815e1a6d96 -r 1e4f4964e9c2 webapp/src/main/webapp/jquery/jquery.digilib.js
--- a/webapp/src/main/webapp/jquery/jquery.digilib.js	Fri May 04 16:23:56 2012 +0200
+++ b/webapp/src/main/webapp/jquery/jquery.digilib.js	Thu May 17 19:29:28 2012 +0200
@@ -38,7 +38,7 @@
 
     var defaults = {
         // version of this script
-        'version' : 'jquery.digilib.js 2.1.6a4',
+        'version' : 'jquery.digilib.js 2.1.7a0',
         // logo url
         'logoUrl' : 'img/digilib-logo-text1.png',
         // homepage url (behind logo)
@@ -1558,14 +1558,24 @@
      * 
      */
     var canMove = function(data, movx, movy) {
+
         var za = data.zoomArea;
         if (isFullArea(za)) return false;
+        var dx = movx;
+        var dy = movy;
+        // rotate and mirror change direction of cooordinate system
+        var trafo = data.imgTrafo;
+        if (trafo != null) {
+            dx = (trafo.m00 > 0) ? movx : -movx;
+            dy = (trafo.m11 > 0) ? movy : -movy;
+            if (Math.abs(trafo.m00) < Math.abs(trafo.m01)) {
+                dx = (trafo.m01 > 0) ? -movy : movy;
+                dy = (trafo.m10 > 0) ? -movx : movx;
+            }
+        }
         var x2 = za.x + za.width;
         var y2 = za.y + za.height;
-        return (((movx < 0) && (za.x > 0))
-            || ((movx > 0) && (x2 < 1.0))
-            || ((movy < 0) && (za.y > 0))
-            || ((movy > 0) && (y2 < 1.0)));
+        return (((dx < 0) && (za.x > 0)) || ((dx > 0) && (x2 < 1.0)) || ((dy < 0) && (za.y > 0)) || ((dy > 0) && (y2 < 1.0)));
     };
 
     /** return if area is maximal.