27 lines
1.5 KiB
Markdown
27 lines
1.5 KiB
Markdown
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# Letterbox Fill: 4-Mode Restructure (Solid, Blended, Gradient, None)
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## Task
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Restructure the letterbox fill modes from 3 (None, Gradient, Solid) to 4 distinct modes with clearer semantics.
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## New Modes
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1. **Solid** (new) - Picks the dominant (average) shade from the edge and fills the entire letterbox area with that single dithered color.
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2. **Blended** (renamed from old "Solid") - Uses per-pixel sampled edge colors with noise dithering, no distance-based interpolation.
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3. **Gradient** - Existing gradient behavior (interpolates per-pixel edge color toward a target color).
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4. **None** - No fill.
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## Changes Made
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### `src/CrossPointSettings.h`
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- Updated `SLEEP_SCREEN_LETTERBOX_FILL` enum: `LETTERBOX_NONE=0`, `LETTERBOX_SOLID=1`, `LETTERBOX_BLENDED=2`, `LETTERBOX_GRADIENT=3`.
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- Note: enum values changed from the old 3-value layout. Existing saved settings may need reconfiguring.
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### `src/SettingsList.h`
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- Updated "Letterbox Fill" option labels to: "None", "Solid", "Blended", "Gradient".
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### `src/activities/boot_sleep/SleepActivity.cpp`
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- `drawLetterboxFill()`: Changed signature from `bool solidFill` to `uint8_t fillMode`. Added dominant shade computation for SOLID mode (averages all edge samples into one value per side). BLENDED and SOLID both skip gradient interpolation; SOLID additionally skips per-pixel edge lookups.
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- `renderBitmapSleepScreen()`: Removed `solidFill` bool, passes `fillMode` directly to `drawLetterboxFill`. Updated log message to show the mode name.
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## Follow-up Items
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- None
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