Background image

[nagyrobi]

Options to set display (not widget) backdround image/color/opacity:

https://docs.lvgl.io/8/overview/display.html#background

[clydebarrow]

disp_bg_color: is working, disp_bg_image is not currently.

[clydebarrow]

Now working.

[nagyrobi]

color:
  - id: color_pink
    hex: ff00ff

lvgl:
...
  disp_bg_color: color_pink #nor 0xff00ff

results in:

Compiling .pioenvs/esp32-test-lvgl-host/src/main.o
config/_02_host_lvgl_5_demos.yaml: In lambda function:
config/_02_host_lvgl_5_demos.yaml:2327:37: error: could not convert ‘color_pink’ from ‘esphome::Color’ to ‘lv_color_t’ {aka ‘lv_color16_t’}
*** [.pioenvs/esp32-test-lvgl-host/src/main.o] Error 1

[nagyrobi]

Also, I get a warning WARNING The image "config/inc/background1.png" you requested is very big. Please consider using the resize parameter. for a 534x534px image. https://github.com/clydebarrow/esphome/blob/c7c0d97a5ecbaa235636ba9e527f8c9ff7b4c4b0/esphome/components/image/__init__.py#L319

Imho this kind of warning is outdated these days, there are (and will be more and more) displays with resolutions in this range, people would likely want to use wallpapers on. Possible mitigations:

• The sizes could be increased by a magnitude.
• Add something like if (CONF_RESIZE not in config or LVGL not in config) and (width > 500 or height > 500): to make an exception for LVGL
• Or better the whole check could be removed.

[clydebarrow]

config/_02_host_lvgl_5_demos.yaml:2327:37: error: could not convert ‘color_pink’ from ‘esphome::Color’ to ‘lv_color_t’ {aka ‘lv_color16_t’} *** [.pioenvs/esp32-test-lvgl-host/src/main.o] Error 1

Fixed.

[clydebarrow]

Imho this kind of warning is outdated these days, there are (and will be more and more) displays with resolutions in this range, people would likely want to use wallpapers on. Possible mitigations:

Make a PR to remove this check, I would suggest.

[nagyrobi]

OK, I'll make one after LVGL will be merged (so that there will be a reason to do so).