GimpZoomPreview should use allocated space when zooming in
Submitted by techtonik
Link to original bug (#557195)
Description
Many dialogs have preview canvas, which is not stretchable. For instance, channel mixer - when dialog is resized preview canvas stays the same size. If you magnify preview part - you will need to use scrollbars for navigation. Another example of fixed canvases are Filterpack dialog thumbnails.
Other information:
Version: 2.6.1