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-rw-r--r--src/crystfelimageview.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/src/crystfelimageview.c b/src/crystfelimageview.c
index 65698a64..4fd2a97c 100644
--- a/src/crystfelimageview.c
+++ b/src/crystfelimageview.c
@@ -369,7 +369,7 @@ GtkWidget *crystfel_image_view_new()
/* All values initially meaningless */
iv->detector_w = 1.0;
iv->detector_h = 1.0;
- iv->zoom = 1.0;
+ iv->zoom = -1.0;
iv->filename = NULL;
iv->event = NULL;
iv->image = NULL;
@@ -491,9 +491,12 @@ static int reload_image(CrystFELImageView *iv)
border = iv->detector_w * 0.1;
iv->detector_w += border;
iv->detector_h += border;
- iv->offs_x = -min_x + border/2.0;
- iv->offs_y = max_y + border/2.0;
- iv->zoom = 1.0/iv->image->detgeom->panels[0].pixel_pitch;
+ if ( iv->zoom < 0.0 ) {
+ /* Set initial values */
+ iv->offs_x = -min_x + border/2.0;
+ iv->offs_y = max_y + border/2.0;
+ iv->zoom = 1.0/iv->image->detgeom->panels[0].pixel_pitch;
+ }
configure_scroll_adjustments(iv);
return 0;