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Ryan Fleury
2024-01-10 19:57:50 -08:00
commit a42ec6aeff
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src/font_provider/dwrite/font_provider_dwrite.h
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/* date = November 2nd 2022 11:31 am */
#ifndef FONT_PROVIDER_DWRITE_H
#define FONT_PROVIDER_DWRITE_H
#include <dwrite.h>
#pragma comment(lib, "gdi32.lib")
#pragma comment(lib, "dwrite.lib")
//- rjf: font file loader interface types
struct FP_DWrite_FontFileLoaderVTable
{
HRESULT (*QueryInterface)(void *obj, REFIID riid, void *ptr_to_object);
ULONG (*AddRef)(void *obj);
ULONG (*Release)(void *obj);
HRESULT (*CreateStreamFromKey)(struct FP_DWrite_FontFileLoader *loader, void const *font_file_ref_key, UINT32 font_file_ref_key_size, IDWriteFontFileStream **stream_out);
};
struct FP_DWrite_FontFileLoader
{
FP_DWrite_FontFileLoaderVTable *lpVtbl;
};
//- rjf: font file stream interface types
struct FP_DWrite_FontFileStreamVTable
{
HRESULT (*QueryInterface)(void *obj, REFIID riid, void *ptr_to_object);
ULONG (*AddRef)(void *obj);
ULONG (*Release)(void *obj);
HRESULT (*ReadFileFragment)(struct FP_DWrite_FontFileStream *obj, void const **fragment_start, UINT64 file_offset, UINT64 fragment_size, void **fragment_context);
HRESULT (*ReleaseFileFragment)(struct FP_DWrite_FontFileStream *obj, void *fragment_context);
HRESULT (*GetFileSize)(struct FP_DWrite_FontFileStream *obj, UINT64 *size_out);
HRESULT (*GetLastWriteTime)(struct FP_DWrite_FontFileStream *obj, UINT64 *time_out);
};
struct FP_DWrite_FontFileStream
{
FP_DWrite_FontFileStreamVTable *lpVtbl;
String8 *data;
};
struct FP_DWrite_FontFileStreamNode
{
FP_DWrite_FontFileStreamNode *next;
FP_DWrite_FontFileStreamNode *prev;
FP_DWrite_FontFileStream stream;
};
//- rjf: state & underlying handle types
struct FP_DWrite_State
{
Arena *arena;
IDWriteFactory *factory;
IDWriteRenderingParams *base_rendering_params;
IDWriteRenderingParams *rendering_params[FP_RasterMode_COUNT];
IDWriteGdiInterop *gdi_interop;
Vec2S32 bitmap_render_target_dim;
IDWriteBitmapRenderTarget *bitmap_render_target;
FP_DWrite_FontFileStreamNode *first_stream_node;
FP_DWrite_FontFileStreamNode *last_stream_node;
FP_DWrite_FontFileStreamNode *free_stream_node;
};
struct FP_DWrite_Font
{
IDWriteFontFile *file;
IDWriteFontFace *face;
};
////////////////////////////////
//~ rjf: Helpers
//- rjf: handle conversion functions
internal FP_DWrite_Font fp_dwrite_font_from_handle(FP_Handle handle);
internal FP_Handle fp_dwrite_handle_from_font(FP_DWrite_Font font);
//- rjf: file stream allocator
internal FP_DWrite_FontFileStreamNode *fp_dwrite_font_file_stream_node_alloc(String8 *data_ptr);
internal void fp_dwrite_font_file_stream_node_release(FP_DWrite_FontFileStreamNode *node);
//- rjf: iunknown no-op helpers
internal HRESULT fp_dwrite_iunknown_noop__query_interface(void *obj, REFIID riid, void *ptr_to_object);
internal ULONG fp_dwrite_iunknown_noop__add_ref(void *obj);
internal ULONG fp_dwrite_iunknown_noop__release(void *obj);
//- rjf: font file loader interface function implementations
internal HRESULT fp_dwrite_static_font_file_loader__stream_from_key(FP_DWrite_FontFileLoader *obj, void const *font_file_ref_key, UINT32 font_file_ref_key_size, IDWriteFontFileStream **stream_out);
//- rjf: font file stream interface function implementations
internal HRESULT fp_dwrite_static_font_file_stream__read_file_fragment(FP_DWrite_FontFileStream *obj, void const **fragment_start, UINT64 file_offset, UINT64 fragment_size, void **fragment_context);
internal HRESULT fp_dwrite_static_font_file_stream__release_file_fragment(FP_DWrite_FontFileStream *obj, void *fragment_context);
internal HRESULT fp_dwrite_static_font_file_stream__get_file_size(FP_DWrite_FontFileStream *obj, UINT64 *size_out);
internal HRESULT fp_dwrite_static_font_file_stream__get_last_write_time(FP_DWrite_FontFileStream *obj, UINT64 *time_out);
#endif // FONT_PROVIDER_DWRITE_H