View: provide the transform between different coordinate spaces

There's currently no way for an application to convert between view and drawing coordinates with a drawing states stack without keeping track of all the transformations itself, which is not very convenient for helper or library functions. Handle other spaces too, for good measure. Change-Id: Ic8404a1c111e273fff1eebf2f9f59f58246b796c Reviewed-on: https://review.haiku-os.org/c/haiku/+/5775 Tested-by: Commit checker robot <[email protected]> Reviewed-by: waddlesplash <[email protected]>
2022-11-13 04:04:30 +00:00
parent 423e3645e1
commit 241f109ccb
7 changed files with 199 additions and 4 deletions
@@ -358,6 +358,7 @@ enum {
 	// transformation in addition to origin/scale
 	AS_VIEW_SET_TRANSFORM,
 	AS_VIEW_GET_TRANSFORM,
+	AS_VIEW_GET_PARENT_COMPOSITE,

 	AS_VIEW_AFFINE_TRANSLATE,
 	AS_VIEW_AFFINE_SCALE,