pyrite-dev/milsko
pyrite-dev/milsko
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successfully convert a directwrite fontface to a gdi logfont
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IoI_xD 2026-07-16 22:17:41 -07:00
commit 72bfe25036
1 changed files with 46 additions and 10 deletions
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56
src/text/directwrite.c
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@ -1,3 +1,8 @@
/*
* DirectWrite Font backend
*
* This should dynamically load everything necessary and then gracefully fallback if the user isn't on Windows 10.
*/
#ifdef USE_DIRECTWRITE
#define INITGUID
#include <Mw/Milsko.h>
@ -19,13 +24,12 @@ static struct dw {
HRESULT (*DWriteCreateFactory)(int factoryType, const IID* const iid, IUnknown** factory);
} dw_table;
struct _MwFLFont {
int px;
void * data;
MwBool valid;
IDWriteFactory* dWriteFactory;
IDWriteFactory6* write_factory;
IDWriteTextFormat* dTextFormat;
ID2D1Factory* d2dFactory;
ID2D1HwndRenderTarget* rt;
@ -34,8 +38,11 @@ struct _MwFLFont {
IDWriteFontFile * file;
IDWriteFontFace * font_face;
IDWriteFontSetBuilder2 * font_builder;
IDWriteFontSet* font_set;
IDWriteFontCollection1* font_collection;
LOGFONT logfont;
LOGFONTW logfont;
HFONT font;
};
@ -120,7 +127,7 @@ static void* dw_MwFontLoad(unsigned char* data, unsigned int size, int px) {
goto fail;
}
hr = dw_table.DWriteCreateFactory(0 /*DWRITE_FACTORY_TYPE_SHARED*/,&IID_IDWriteFactory, (struct IUnknown**)&ttf->dWriteFactory);
hr = dw_table.DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED,&IID_IDWriteFactory, (struct IUnknown**)&ttf->write_factory);
if(!SUCCEEDED(hr)) {
printf("DWriteCreateFactory failed for TTF (%08lx), cannot use DirectWrite\n", hr);
@ -131,24 +138,54 @@ static void* dw_MwFontLoad(unsigned char* data, unsigned int size, int px) {
goto fail;
};
hr = ttf->dWriteFactory->lpVtbl->CreateFontFileReference(ttf->dWriteFactory, font_name, NULL, &ttf->file);
hr = IDWriteFactory6_CreateFontFileReference(ttf->write_factory, font_name, NULL, &ttf->file);
if(!SUCCEEDED(hr)) {
printf("CreateFontFileReference failed for TTF (%08lx), cannot use DirectWrite\n",hr);
goto fail;
}
hr = ttf->dWriteFactory->lpVtbl->CreateFontFace(ttf->dWriteFactory, DWRITE_FONT_FACE_TYPE_TRUETYPE, 1, &ttf->file, 0, DWRITE_FONT_SIMULATIONS_NONE, &ttf->font_face);
hr = IDWriteFactory_CreateFontFace(ttf->write_factory, DWRITE_FONT_FACE_TYPE_TRUETYPE, 1, &ttf->file, 0, DWRITE_FONT_SIMULATIONS_NONE, &ttf->font_face);
if(!SUCCEEDED(hr)) {
printf("CreateFontFace failed for TTF (%08lx), cannot use DirectWrite\n",hr);
printf("IDWriteFactory_CreateFontFace failed for TTF (%08lx), cannot use DirectWrite\n",hr);
goto fail;
}
hr = ttf->dWriteFactory->lpVtbl->GetGdiInterop(ttf->dWriteFactory, &ttf->gdiInterop);
hr = IDWriteFactory6_CreateFontSetBuilder(ttf->write_factory, &ttf->font_builder);
if(!SUCCEEDED(hr)) {
printf("IDWriteFactory6_CreateFontSetBuilder failed for TTF (%08lx), cannot use DirectWrite\n",hr);
goto fail;
}
hr = IDWriteFontSetBuilder2_AddFontFile(ttf->font_builder, font_name);
if(!SUCCEEDED(hr)) {
printf("IDWriteFontSetBuilder2_AddFontFile failed for TTF (%08lx), cannot use DirectWrite\n",hr);
goto fail;
}
hr = IDWriteFontSetBuilder_CreateFontSet(ttf->font_builder, &ttf->font_set);
if(!SUCCEEDED(hr)) {
printf("IDWriteFontSetBuilder_CreateFontSet failed for TTF (%08lx), cannot use DirectWrite\n",hr);
goto fail;
}
hr = IDWriteFactory3_CreateFontCollectionFromFontSet(ttf->write_factory, ttf->font_set, &ttf->font_collection);
if(!SUCCEEDED(hr)) {
printf("IDWriteFactory3_CreateFontCollectionFromFontSet failed for TTF (%08lx), cannot use DirectWrite\n",hr);
goto fail;
}
hr = IDWriteFactory6_GetGdiInterop(ttf->write_factory, &ttf->gdiInterop);
if(!SUCCEEDED(hr)) {
printf("GetGdiInterop failed for TTF (%08lx), cannot use DirectWrite\n",hr);
goto fail;
}
IDWriteGdiInterop_ConvertFontFaceToLOGFONT(ttf->gdiInterop, ttf->font_face, &ttf->logfont);
if(!SUCCEEDED(hr)) {
printf("IDWriteGdiInterop_ConvertFontFaceToLOGFONT failed for TTF (%08lx), cannot use DirectWrite\n",hr);
goto fail;
}
ttf->valid = MwTRUE;
return ttf;
@ -173,13 +210,12 @@ static int dw_MwTextHeight(MwFLFont ttf, int count) {
IDWriteFontFace_GetMetrics(ttf->font_face, &metrics);
height = ceil(((float)metrics.xHeight * ttf->px / metrics.designUnitsPerEm) * count);
height = ceil(((float)metrics.capHeight * ttf->px / metrics.designUnitsPerEm) * count);
return height;
}
static void dw_MwFontFree(void* handle) {
MwFLFont ttf = handle;