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/* Pango
* pangowin32-dwrite-fontmap.cpp: Win32 font handling with DirectWrite
*
* Copyright (C) 2022 Luca Bacci
* Copyright (C) 2022 Chun-wei Fan
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <initguid.h>
#include <dwrite.h>
#ifdef STRICT
#undef STRICT
#endif
#include "pangowin32-private.h"
#ifdef _MSC_VER
# define UUID_OF_IDWriteFactory __uuidof (IDWriteFactory)
#else
# define UUID_OF_IDWriteFactory IID_IDWriteFactory
#endif
struct _PangoWin32DWriteItems
{
IDWriteFactory *dwrite_factory;
IDWriteGdiInterop *gdi_interop;
};
PangoWin32DWriteItems *
pango_win32_init_direct_write (void)
{
PangoWin32DWriteItems *dwrite_items = g_new0 (PangoWin32DWriteItems, 1);
HRESULT hr;
gboolean failed = FALSE;
hr = DWriteCreateFactory (DWRITE_FACTORY_TYPE_SHARED,
UUID_OF_IDWriteFactory,
reinterpret_cast<IUnknown**> (&dwrite_items->dwrite_factory));
if (SUCCEEDED (hr) && dwrite_items->dwrite_factory != NULL)
{
hr = dwrite_items->dwrite_factory->GetGdiInterop (&dwrite_items->gdi_interop);
if (FAILED (hr) || dwrite_items->gdi_interop == NULL)
{
g_error ("DWriteCreateFactory::GetGdiInterop failed with error code %x", (unsigned)hr);
dwrite_items->dwrite_factory->Release ();
failed = TRUE;
}
}
else
{
g_error ("DWriteCreateFactory failed with error code %x", (unsigned)hr);
failed = TRUE;
}
if (failed)
g_free (dwrite_items);
return failed ? NULL : dwrite_items;
}
void
pango_win32_dwrite_items_destroy (PangoWin32DWriteItems *dwrite_items)
{
dwrite_items->gdi_interop->Release ();
dwrite_items->dwrite_factory->Release ();
g_free (dwrite_items);
}
void
pango_win32_dwrite_font_map_populate (PangoWin32FontMap *map)
{
IDWriteFontCollection *collection = NULL;
UINT32 count;
HRESULT hr;
gboolean failed = FALSE;
PangoWin32DWriteItems *dwrite_items = pango_win32_get_direct_write_items ();
hr = dwrite_items->dwrite_factory->GetSystemFontCollection (&collection, FALSE);
if (FAILED (hr) || collection == NULL)
{
g_error ("IDWriteFactory::GetSystemFontCollection failed with error code %x\n", (unsigned)hr);
return;
}
count = collection->GetFontFamilyCount ();
for (UINT32 i = 0; i < count; i++)
{
IDWriteFontFamily *family = NULL;
UINT32 font_count;
hr = collection->GetFontFamily (i, &family);
if G_UNLIKELY (FAILED (hr) || family == NULL)
{
g_warning ("IDWriteFontCollection::GetFontFamily failed with error code %x\n", (unsigned)hr);
continue;
}
font_count = family->GetFontCount ();
for (UINT32 j = 0; j < font_count; j++)
{
IDWriteFont *font = NULL;
IDWriteFontFace *face = NULL;
DWRITE_FONT_FACE_TYPE font_face_type;
hr = family->GetFont (j, &font);
if (FAILED (hr) || font == NULL)
{
g_warning ("IDWriteFontFamily::GetFont failed with error code %x\n", (unsigned)hr);
break;
}
hr = font->CreateFontFace (&face);
if (FAILED (hr) || face == NULL)
{
g_warning ("IDWriteFont::CreateFontFace failed with error code %x\n", (unsigned)hr);
font->Release ();
continue;
}
font_face_type = face->GetType ();
/* don't include Type-1 fonts */
if (font_face_type != DWRITE_FONT_FACE_TYPE_TYPE1)
{
LOGFONTW lfw;
BOOL is_sys_font;
hr = dwrite_items->gdi_interop->ConvertFontToLOGFONT (font, &lfw, &is_sys_font);
if (SUCCEEDED (hr))
pango_win32_insert_font (map, &lfw, font, FALSE);
else
g_warning ("GDIInterop::ConvertFontToLOGFONT failed with error code %x\n",
(unsigned)hr);
}
face->Release ();
}
family->Release ();
}
collection->Release ();
collection = NULL;
}
gpointer
pango_win32_logfontw_get_dwrite_font (LOGFONTW *logfontw)
{
PangoWin32DWriteItems *dwrite_items = pango_win32_get_direct_write_items ();
IDWriteFont *font = NULL;
HRESULT hr;
hr = dwrite_items->gdi_interop->CreateFontFromLOGFONT (logfontw, &font);
if (FAILED (hr) || font == NULL)
g_warning ("IDWriteFactory::GdiInterop::CreateFontFromLOGFONT failed with error %x\n",
(unsigned)hr);
return font;
}
void
pango_win32_dwrite_font_release (gpointer dwrite_font)
{
IDWriteFont *font = static_cast<IDWriteFont *>(dwrite_font);
if (font != NULL)
font->Release ();
}
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