Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2024-10-31 22:25:30 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Bug 712386 - Limit how much zoom can be applied. r=Cwiiis

Browse Source
This commit is contained in:
Kartikaya Gupta 2011-12-27 00:56:57 -05:00
parent bd9005b059
commit 954005ec2a
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
mobile/android/base/ui/PanZoomController.java
View File

@ -937,6 +937,14 @@ public class PanZoomController
synchronized (mController) {
float newZoomFactor = mController.getZoomFactor() * spanRatio;
if (newZoomFactor >= MAX_ZOOM) {
// apply resistance when zooming past MAX_ZOOM,
// such that it asymptotically reaches MAX_ZOOM + 1.0
// but never exceeds that
float excessZoom = newZoomFactor - MAX_ZOOM;
excessZoom = 1.0f - (float)Math.exp(-excessZoom);
newZoomFactor = MAX_ZOOM + excessZoom;
}
mController.scrollBy(new PointF(mLastZoomFocus.x - detector.getFocusX(),
mLastZoomFocus.y - detector.getFocusY()));