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feat(event, widgets) improve the paramter of LV_EVENT_DRAW_PART_BEGIN/END

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Add lv_<widget>_draw_part_type_t to widgets to precisly describe the hooked drawings.
Also add class_p element to lv_obj_draw_part_dsc_t to show what widgets lv_<widget>_draw_part_type_t needs to be used.

Related to: https://forum.lvgl.io/t/how-to-add-minor-division-lines-to-a-chart/5366/
This commit is contained in:
Gabor Kiss-Vamosi
2021-07-07 16:18:56 +02:00
parent f172eb3fd7
commit 88c485949f
46 changed files with 712 additions and 349 deletions
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5
docs/widgets/core/canvas.md
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@@ -75,7 +75,10 @@ A given area of the canvas can be blurred horizontally with `lv_canvas_blur_hor(
`r` is the radius of the blur (greater value means more intensive burring). `area` is the area where the blur should be applied (interpreted relative to the canvas).
## Events
The same events are sent as for the [Images](/widgets/core/img).
No special events are sent by canvas objects.
The same events are sent as for the
See the events of the [Images](/widgets/core/img) too.
Learn more about [Events](/overview/event).