109 lines
6.5 KiB
Markdown
109 lines
6.5 KiB
Markdown
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# Roadmap
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## Planned for v9
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### Naming and API
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- [x] `lv_style_set_size()` should have separate width and height parameters
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- [ ] `lv_img_set_src()` use "type-aware" parameter. See [here](https://github.com/lvgl/lvgl/tree/arch/img-decode-rework)
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- [ ] Reconsider image color formats.
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- [ ] More consistent names:`remove/clear/delete/del`, `offset/ofs`, `add/create/register`, `id/idx/index`, `middle/mid/center`, `img/image`, `txt/text`, `opa/opacity/alpha`, `scr/screen`, `disp, display`, `finished/complete/completed/ready`, `buf/buffer`, `..._cb`, angle, rotation`, `zoom, scale`
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- [ ] Reconsider the use of `has`, `is`, `enable` "action" keywords
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- [ ] Update canvas API (https://github.com/lvgl/lvgl/issues/3393)
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- [x] `LV_STYLE_PROP_INHERIT` -> `LV_STYLE_PROP_FLAG_INHERITABLE` [LINK](https://github.com/lvgl/lvgl/pull/3390#discussion_r885915769)
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- [ ] Replace `disp_drv->direct_mode/full_refresh` with enum.
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- [x] Consider flat directory structure. E.g. `extra/widgets` to `widgets`
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- [ ] Rename `disp_drv->monitor_cb` to `render_completed/finished/ready`
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- [ ] Use `uint32_t` and `int32_t` in APIs where possible
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### Architecture
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- [ ] Consider merging `lv_disp_t`, `lv_disp_drv_t`, `lv_disp_draw_buf_t`, `lv_draw_ctx_t`, and `struct`s from the new driver API (or only some of them)
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- [ ] Better way to reset global variables in `lv_deinit()` #3385
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- [ ] New driver architecture #2720
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- [x] `draw_ctx->buffer_convert`? See [here](https://github.com/lvgl/lvgl/issues/3379#issuecomment-1147954592). Also remove 16 SWAPPED color format? See [here](https://github.com/lvgl/lvgl/issues/3379#issuecomment-1140886258).
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- [ ] Reconsider masks. There should be a generic high level mask API whic is independent of the drawing engine.
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- [ ] `get_glyph_bitmap` should return an a8 bitmap that can be blended immediately.
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- [ ] Reconsider how themes should work. See [here](https://github.com/lvgl/lvgl/pull/3390#pullrequestreview-990710921).
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- [ ] Consider to prepare LVGL to render independent areas in parallel.
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- [ ] Introduce a pipeline in renderer to support multi-GPUs/Accelerators, such as 2D-capable-DMAs, 2D GPUs, dedicated processor cores for 2D tasks etc.
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- [x] More conscious `<std*.h>` wrapper API
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- [x] Drop `lv_mem_buf_get` as tlsf should be fast enough for normal allocations too. Fragmentation is also lower if processes can completely clean up after themselves.
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- [ ] Use `(u)int32_t` in API where possible. Consider hardcoding `lv_coord_t` as `int32_t`.
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- [ ] `lv_array`: replace linked lists with array where possible (arrays are faster and uses less memory)
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- [ ] Reconsider how to handle UTF-8 characters (allow different encoding too) and Bidi. Maybe create an abstraction for typesetting.
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- [ ] Generic `lv_date_t` and `lv_time_t`?
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- [ ] Update the `lv_img_dsc_t` to support images larger than 2048x2048
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- [ ] More color formats: 24 bit, ARGB1555, ARGB4444 etc
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- [ ] Unified caching #3116 #3415
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- [ ] Make layouts with an `lv_layout_dsc_t` instead of registering an ID+callback. See [here](https://github.com/lvgl/lvgl/issues/3481#issuecomment-1206434501)
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### Styles
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- [ ] Make `style_bg_img` support `9patch` images
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- [ ] non-uniform scale of images: scale width and height differently
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- [ ] Scroll anim settings should come from styles to allow customization
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### Widgets
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- [ ] `lv_img`: Reconsider image sizing models (when the image size is not content): center, top-left, zoom, tile, other?
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- [ ] `lv_tabview` Replace button matrix with real buttons for more flexibility
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- [ ] `lv_label` reconsider label long modes. (support min/max-width/height too) #3420
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- [ ] Improve `lv_label_align_t` #1656
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- [ ] Disabled widgets should absorb indev actions without sending events. [#3860](https://github.com/lvgl/lvgl/issues/3860)
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### Drawing and rendering
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- [ ] Allow selecting between the layered (new) and not layered (old) rendering.
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### Animations
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- [ ] Consider `anim` events to replace many callbacks with one
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- [ ] `lv_anim_time_to_speed` should work differently to remove `style_anim_speed`. E.g. on large values of anim time store the speed. Besides all widgets should use the `style_anim` property. `anim` should clamp the time if it's calculated from speed, e.g `lv_clamp(200, t, 2000)`. (maybe `a->min_time/max_time`).
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- [ ] Use dedicated `lv_anim_custom_exec_cb_t`. See [here](https://forum.lvgl.io/t/custom-exec-cb-prevents-lv-anim-del-obj-null/10266).
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## Planned in general
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### CI
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- [ ] Plaform independent bechmarking # 3443
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- [ ] Run static analyzer
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- [ ] Release script
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- [ ] Unit test for all widgets #2337
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- [ ] CI test for flash/RAM usage #3127
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### Architecture
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- [ ] C++ binding: https://github.com/lvgl/lv_binding_cpp
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- [ ] Markup language #2428
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### Styles
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- [ ] Hover
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- [ ] Global states in selectors. E.g. `LV_STATE_PRESSED | SMALL_SCREEN` like media quarry in CSS
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### Drawing and rendering
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- [ ] Different radius on each corner #2800
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- [ ] gradient to border/outline/shadow
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- [ ] multiple shadow/border
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- [ ] perspective
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- [ ] text shadow
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- [ ] innter shadow
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- [ ] ARGB image stroke/grow on the alpha map
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- [ ] real time blur
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- [ ] gradient with alpha
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### Others
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- [ ] More grid features. E.g. repeat(auto-fill, minmax( <value> px, 1fr))
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- [ ] Named grid cells to allow updating layouts without touching the children (like CSS `grid-template-areas`)
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- [ ] Scene support. See [this comment](https://github.com/lvgl/lvgl/issues/2790#issuecomment-965100911)
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- [ ] Circle layout. #2871
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- [ ] Variable binding. I.e create properties which can be bound to objects and those obejcts are notified on value change. Maybe based on `lv_msg`?
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- [ ] Consider [stagger animations](https://greensock.com/docs/v3/Staggers).
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## Ideas
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- Consider direct binary font format support
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- Improve groups. [Discussion](https://forum.lvgl.io/t/lv-group-tabindex/2927/3). Reconsider focusing logic. Allow having no widget selected (on web it's possible). Keep editing state in `lv_obj_t` (See [here](https://github.com/lvgl/lvgl/issues/3646)). Support slider left knob focusing (see [here](https://github.com/lvgl/lvgl/issues/3246))
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- lv_mem_alloc_aligned(size, align)
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- Speed up font decompression
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- Support larger images: add support for large image #1892
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- Functional programming support, pure view? See [here](https://www.freecodecamp.org/news/the-revolution-of-pure-views-aed339db7da4/)
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- Style components. See [this comment](https://github.com/lvgl/lvgl/issues/2790#issuecomment-965100911)
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- SVG support: integrate an SVG render library
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- Support dot_begin and dot_middle long modes for labels
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- Allow matrix input for image transformation?
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- Radial/skew/conic gradient
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- Somehow let children inherit the parent's state
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- text on path
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