From 1c14f5cc9430b060a152a92a40e2c43b938e7dd9 Mon Sep 17 00:00:00 2001
From: Grant Echols <gechols@ldschurch.org>
Date: Mon, 22 Jun 2015 13:26:24 -0600
Subject: [PATCH] Added code to handle the case where autoResize=false. In this
mode the image size is preserved and the center is maintained. This may be
considered changing the default behavior so I'd welcome a suggestion to add a
configuration parameter to help preserve the default behavior.
---
src/viewer.js | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/src/viewer.js b/src/viewer.js
index 7143443d..26ac3aa2 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -2835,6 +2835,28 @@ function updateOnce( viewer ) {
THIS[ viewer.hash ].forceRedraw = true;
}
}
+ else {
+ var containerSize = _getSafeElemSize( viewer.container );
+ if ( !containerSize.equals( THIS[ viewer.hash ].prevContainerSize ) ) {
+ var prevContainerSize = THIS[ viewer.hash ].prevContainerSize;
+ var bounds = viewer.viewport.getBounds(true);
+ var deltaX = (containerSize.x - prevContainerSize.x);
+ var deltaY = (containerSize.y - prevContainerSize.y);
+ var viewportDiff = viewer.viewport.deltaPointsFromPixels(new OpenSeadragon.Point(deltaX, deltaY), true);
+ viewer.viewport.resize(new OpenSeadragon.Point(containerSize.x, containerSize.y), false);
+
+ // Keep the center of the image in the center and just adjust the amount of image shown
+ bounds.width += viewportDiff.x;
+ bounds.height += viewportDiff.y;
+ bounds.x -= (viewportDiff.x / 2);
+ bounds.y -= (viewportDiff.y / 2);
+ viewer.viewport.fitBounds(bounds, true);
+ viewer.forceRedraw();
+
+ THIS[ viewer.hash ].prevContainerSize = containerSize;
+ THIS[ viewer.hash ].forceRedraw = true;
+ }
+ }
var viewportChange = viewer.viewport.update();
var animated = viewer.world.update() || viewportChange;