initial upload

src/font_provider/font_provider.h

@@ -0,0 +1,61 @@
+// Copyright (c) 2024 Epic Games Tools
+// Licensed under the MIT license (https://opensource.org/license/mit/)
+
+#ifndef FONT_PROVIDER_H
+#define FONT_PROVIDER_H
+
+#define fp_hook C_LINKAGE
+
+////////////////////////////////
+//~ rjf: Types
+
+typedef enum FP_RasterMode
+{
+  FP_RasterMode_Sharp,
+  FP_RasterMode_Smooth,
+  FP_RasterMode_COUNT
+}
+FP_RasterMode;
+
+typedef struct FP_Handle FP_Handle;
+struct FP_Handle
+{
+  U64 u64[2];
+};
+
+typedef struct FP_Metrics FP_Metrics;
+struct FP_Metrics
+{
+  F32 design_units_per_em;
+  F32 ascent;
+  F32 descent;
+  F32 line_gap;
+  F32 capital_height;
+};
+
+typedef struct FP_RasterResult FP_RasterResult;
+struct FP_RasterResult
+{
+  Vec2S16 atlas_dim;
+  void *atlas;
+  F32 advance;
+  S16 height;
+};
+
+////////////////////////////////
+//~ rjf: Basic Type Functions
+
+internal FP_Handle fp_handle_zero(void);
+internal B32 fp_handle_match(FP_Handle a, FP_Handle b);
+
+////////////////////////////////
+//~ rjf: Backend Hooks
+
+fp_hook void fp_init(void);
+fp_hook FP_Handle fp_font_open(String8 path);
+fp_hook FP_Handle fp_font_open_from_static_data_string(String8 *data_ptr);
+fp_hook void fp_font_close(FP_Handle handle);
+fp_hook FP_Metrics fp_metrics_from_font(FP_Handle font);
+fp_hook NO_ASAN FP_RasterResult fp_raster(Arena *arena, FP_Handle font, F32 size, FP_RasterMode mode, String8 string);
+
+#endif // FONT_PROVIDER_H