widget_kit_demo Directory Reference

Directory dependency graph for widget_kit_demo:

Directories
	src

Detailed Description

Concrete ra8_widget leaf widgets – a text label and a push button – composited through the ra8_widget_panel compositor on the live GLCDC panel. Where widget_compose_demo proved the panel compositor with anonymous tile leaves, this app drops the real reusable leaves onto it:

• ra8_widget_label_t – a background fill plus an aligned string.
• ra8_widget_button_t – a bordered, filled face and label that latches on a tap and reports the press through its on_input callback.

Both draw through an injected ra8_widget_paint_t backend wired to ra8_gfx, so the ra8_widget library itself stays graphics-free and the same widgets run under the host unit tests against a recording mock paint.

root (column panel)
|- title  (LABEL,  fixed)   centred heading
|- body   (ROW PANEL)       a nested panel ...
|   |- button A (BUTTON, flex)   "Prev"
|   |- button B (BUTTON, flex)   "Next"
|- footer (LABEL,  fixed)   a left-aligned hint line

The deterministic self-check walks a full compose (every root child dirty, whole frame flushed with the quality hint, all leaves painting to a stable CRC), then a synthetic touch routed through the root panel onto button A, which latches and – from its on_press callback – invalidates only the body band, then a partial compose that dirties exactly that one child, damages just the body rect with the fast hint, repaints both buttons, and changes the CRC because button A now shows its pressed face. That is the issue #145 partial-flush acceptance driven by a concrete button. After the banner the loop alternately taps A and B and partial-composes only the body band, so the panel visibly toggles a button.

The RGB565 framebuffer lives in SRAM and composites top-left over the GLCDC background plane; the full 1024x600 panel needs SDRAM, a separate task. The touches are synthesised in firmware, so it runs on a stock EK-RA8D2 with no extra hardware.