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Michael Natterer authored
2002-01-31 Michael Natterer <mitch@gimp.org> * app/core/gimplayer.[ch]: removed gimp_layer_has_alpha(), use gimp_drawable_has_alpha() instead. * app/core/gimpimage-convert.c * app/core/gimpimage-merge.c * app/core/gimpimage-projection.c * app/display/gimpdisplayshell.c * app/gui/layers-commands.c: changed accordingly. * app/core/gimpimage.[ch]: added gimp_image_has_alphe(), made some variable names more verbose and use enum types instead of "gint" in functions calling initial_region() and combine_regions(). * app/widgets/gimpchannellistview.c: show an alpha channel preview only if the image has alpha. * app/widgets/gimppreview.c: reordered functions, gimp_preview_render_and_flush(): fixed channel preview rendering, calculate the component byte offsets before entering the render loop instead of duplicating the render code for the gray/alpha case.
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