[gtk+/wip/baedert/gtkimageview: 72/139] GtkImageView: Allow 0 scale factor



commit bf1f6fdf43293f24742d934f85a005bd4b198ed6
Author: Timm Bäder <mail baedert org>
Date:   Sat Jan 23 15:34:53 2016 +0100

    GtkImageView: Allow 0 scale factor
    
    In that case, just use the widget's scale factor instead.

 gtk/gtkimageview.c |   14 +++++++++-----
 1 files changed, 9 insertions(+), 5 deletions(-)
---
diff --git a/gtk/gtkimageview.c b/gtk/gtkimageview.c
index 6a8e9fc..bca9d3d 100644
--- a/gtk/gtkimageview.c
+++ b/gtk/gtkimageview.c
@@ -1827,7 +1827,11 @@ gtk_image_view_replace_surface (GtkImageView    *image_view,
   if (priv->image_surface)
     cairo_surface_destroy (priv->image_surface);
 
-  priv->scale_factor = scale_factor;
+  if (scale_factor == 0)
+    priv->scale_factor = gtk_widget_get_scale_factor (GTK_WIDGET (image_view));
+  else
+    priv->scale_factor = scale_factor;
+
   priv->image_surface = surface;
   priv->size_valid = FALSE;
 
@@ -2001,7 +2005,7 @@ gtk_image_view_load_from_file_async (GtkImageView        *image_view,
   LoadTaskData *task_data;
   g_return_if_fail (GTK_IS_IMAGE_VIEW (image_view));
   g_return_if_fail (G_IS_FILE (file));
-  g_return_if_fail (scale_factor > 0);
+  g_return_if_fail (scale_factor >= 0);
 
   task_data = g_slice_new (LoadTaskData);
   task_data->scale_factor = scale_factor;
@@ -2038,7 +2042,7 @@ gtk_image_view_load_from_stream_async (GtkImageView        *image_view,
   LoadTaskData *task_data;
   g_return_if_fail (GTK_IS_IMAGE_VIEW (image_view));
   g_return_if_fail (G_IS_INPUT_STREAM (input_stream));
-  g_return_if_fail (scale_factor > 0);
+  g_return_if_fail (scale_factor >= 0);
 
   task_data = g_slice_new (LoadTaskData);
   task_data->scale_factor = scale_factor;
@@ -2079,7 +2083,7 @@ gtk_image_view_set_pixbuf (GtkImageView    *image_view,
 
   g_return_if_fail (GTK_IS_IMAGE_VIEW (image_view));
   g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
-  g_return_if_fail (scale_factor > 0);
+  g_return_if_fail (scale_factor >= 0);
 
 
   if (priv->is_animation)
@@ -2164,7 +2168,7 @@ gtk_image_view_set_animation (GtkImageView       *image_view,
 {
   g_return_if_fail (GTK_IS_IMAGE_VIEW (image_view));
   g_return_if_fail (GDK_IS_PIXBUF_ANIMATION (animation));
-  g_return_if_fail (scale_factor > 0);
+  g_return_if_fail (scale_factor >= 0);
 
   gtk_image_view_replace_animation (image_view, animation, scale_factor);
 }


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