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feat(sdl): support rounded images (#3012)

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* added radius mask for rounded img

* improved mask composite
improved image zoom fidelity

* implementing sdl image radius

* low performance radius img drawing

* improved rounded image performance

* improved rounded image performance

* improved rounded image blending

* pixel perfect rounded image for SDL

* accurate drawing only

* supports rounded img for rect as well

* fixed mask check when zoomed

* surrounded rounded mask in lv_img with draw_complex check

* updated docs

* fixed build issue

* aware of clip_corner property

* reverted lv_img.c

* updated docs
This commit is contained in:
Mariotaku
2022-01-18 19:41:45 +09:00
committed by GitHub
parent 0921dfc8cd
commit d33db6bb59
11 changed files with 627 additions and 207 deletions
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8
docs/widgets/core/img.md
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@@ -100,7 +100,13 @@ It also means the layouts are not affected the by the transformations.
If you need the object size to be updated to the transformed size set `lv_img_set_size_mode(img, LV_IMG_SIZE_MODE_REAL)`. (The previous mode is the default and called `LV_IMG_SIZE_MODE_VIRTUAL`).
In this case if the width/height of the object is set to `LV_SIZE_CONTENT` the object's size will be set to the zoomed and rotated size.
If an explicit size is set then the overflowing content will be cropped.
If an explicit size is set then the overflowing content will be cropped.
### Rounded image
You can use `lv_obj_set_style_radius` to set radius to an image, and enable `lv_obj_set_style_clip_corner` to clip the
content to rounded rectangle or circular shape. Please note this will have some negative performance impact to CPU
based renderers.
## Events
No special events are sent by image objects.