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27 lines
1.1 KiB
C
27 lines
1.1 KiB
C
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#ifndef VGPU_CURSOR_H
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#define VGPU_CURSOR_H
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/* cursor.h — win32 GDI cursor sample/compose onto a tight BGRA frame. */
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#include <stdint.h>
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#include "ctx.h" /* win32 vgpu_ctx (cursor state) */
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/* Sample the current cursor (position/shape) into ctx->cursor.
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* Returns 1 if anything changed since last sample, else 0. */
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int cursor_sample(vgpu_ctx* ctx);
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/* Resolve a HCURSOR to a VGPU_CURSOR_ID_* by comparing against the system cursor table
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* (LoadCursor(NULL, IDC_*) loaded once on first use). Returns VGPU_CURSOR_ID_UNKNOWN for
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* custom cursors. Not hot-path: called only under the shape-change gate. */
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int cursor_resolve_id(HCURSOR hc);
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/* Extract glyph/hotspot/dims for hc into ctx->cursor, resolve its cursor_id, and record it as
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* the current handle. For backends that source position elsewhere (DDA from frame info) and
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* only need the shape on a shape-change gate. Caller serializes ctx->cursor writes. */
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void cursor_apply_shape(vgpu_ctx* ctx, HCURSOR hc);
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/* Alpha/AND-XOR compose the sampled cursor onto a tight BGRA frame. */
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void cursor_draw(vgpu_ctx* ctx, uint8_t* bgra, uint32_t width, uint32_t height);
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#endif /* VGPU_CURSOR_H */
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