[pango/pango1-dwrite: 3/6] pangowin32: Initialize DirectWrite
- From: Chun-wei Fan <fanchunwei src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [pango/pango1-dwrite: 3/6] pangowin32: Initialize DirectWrite
- Date: Fri, 15 Jul 2022 10:49:39 +0000 (UTC)
commit f3b088666b4f7d4c8df433bc29a6da63354b034a
Author: Chun-wei Fan <fanchunwei src gnome org>
Date: Wed Jul 6 18:07:27 2022 +0800
pangowin32: Initialize DirectWrite
We set up the boilerplate that is necessary for using DirectWrite in our code.
Also add code to tear it down after we are done with it.
pango/meson.build | 1 +
pango/pango-font-private.h | 2 +-
pango/pangowin32-dwrite-fontmap.cpp | 88 +++++++++++++++++++++++++++++++++++++
pango/pangowin32-fontmap.c | 1 +
pango/pangowin32-private.h | 11 +++++
pango/pangowin32.c | 15 +++++++
6 files changed, 117 insertions(+), 1 deletion(-)
---
diff --git a/pango/meson.build b/pango/meson.build
index d6b2d81cd..7d18cb003 100644
--- a/pango/meson.build
+++ b/pango/meson.build
@@ -424,6 +424,7 @@ if host_system == 'windows'
'pangowin32.c',
'pangowin32-fontcache.c',
'pangowin32-fontmap.c',
+ 'pangowin32-dwrite-fontmap.cpp',
]
pangowin32_deps = pango_deps + [
diff --git a/pango/pango-font-private.h b/pango/pango-font-private.h
index 885e38c17..d2c46f4eb 100644
--- a/pango/pango-font-private.h
+++ b/pango/pango-font-private.h
@@ -59,7 +59,7 @@ void pango_font_get_matrix (PangoFont *font,
static inline int pango_font_get_absolute_size (PangoFont *font)
{
GTypeClass *klass = (GTypeClass *) PANGO_FONT_GET_CLASS (font);
- PangoFontClassPrivate *priv = g_type_class_get_private (klass, PANGO_TYPE_FONT);
+ PangoFontClassPrivate *priv = (PangoFontClassPrivate *) g_type_class_get_private (klass, PANGO_TYPE_FONT);
return priv->get_absolute_size (font);
}
diff --git a/pango/pangowin32-dwrite-fontmap.cpp b/pango/pangowin32-dwrite-fontmap.cpp
new file mode 100644
index 000000000..b100bce21
--- /dev/null
+++ b/pango/pangowin32-dwrite-fontmap.cpp
@@ -0,0 +1,88 @@
+/* Pango
+ * pangowin32-dwrite-fontmap.cpp: Win32 font handling with DirectWrite
+ *
+ * Copyright (C) 2000 Red Hat Software
+ * Copyright (C) 2000 Tor Lillqvist
+ * Copyright (C) 2001 Alexander Larsson
+ * Copyright (C) 2007 Novell, Inc.
+ *
+ * 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);
+}
diff --git a/pango/pangowin32-fontmap.c b/pango/pangowin32-fontmap.c
index 9b9801224..be6daa788 100644
--- a/pango/pangowin32-fontmap.c
+++ b/pango/pangowin32-fontmap.c
@@ -809,6 +809,7 @@ _pango_win32_font_map_class_init (PangoWin32FontMapClass *class)
(GEqualFunc)alias_equal,
(GDestroyNotify)alias_free,
NULL);
+
#ifdef HAVE_CAIRO_WIN32
read_windows_fallbacks (class->aliases);
read_builtin_aliases (class->aliases);
diff --git a/pango/pangowin32-private.h b/pango/pangowin32-private.h
index 9102662a4..ffd247c1b 100644
--- a/pango/pangowin32-private.h
+++ b/pango/pangowin32-private.h
@@ -57,6 +57,8 @@
#include "pango-fontset.h"
#include "pango-fontmap-private.h"
+G_BEGIN_DECLS
+
#define PANGO_TYPE_WIN32_FONT_MAP (_pango_win32_font_map_get_type ())
#define PANGO_WIN32_FONT_MAP(object) (G_TYPE_CHECK_INSTANCE_CAST ((object),
PANGO_TYPE_WIN32_FONT_MAP, PangoWin32FontMap))
#define PANGO_WIN32_IS_FONT_MAP(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object),
PANGO_TYPE_WIN32_FONT_MAP))
@@ -73,6 +75,7 @@
typedef struct _PangoWin32FontMap PangoWin32FontMap;
typedef struct _PangoWin32FontMapClass PangoWin32FontMapClass;
+typedef struct _PangoWin32DWriteItems PangoWin32DWriteItems;
typedef struct _PangoWin32Font PangoWin32Font;
typedef struct _PangoWin32FontClass PangoWin32FontClass;
typedef struct _PangoWin32Face PangoWin32Face;
@@ -281,4 +284,12 @@ gpointer _pango_win32_copy_cmap (gpointer cmap,
extern gboolean _pango_win32_debug;
+PangoWin32DWriteItems *pango_win32_init_direct_write (void);
+
+PangoWin32DWriteItems *pango_win32_get_direct_write_items (void);
+
+void pango_win32_dwrite_items_destroy (PangoWin32DWriteItems *items);
+
+G_END_DECLS
+
#endif /* __PANGOWIN32_PRIVATE_H__ */
diff --git a/pango/pangowin32.c b/pango/pangowin32.c
index eed92dde7..55a079c9f 100644
--- a/pango/pangowin32.c
+++ b/pango/pangowin32.c
@@ -126,11 +126,13 @@ _pango_win32_font_init (PangoWin32Font *win32font)
}
static GPrivate display_dc_key = G_PRIVATE_INIT ((GDestroyNotify) DeleteDC);
+static GPrivate dwrite_items = G_PRIVATE_INIT ((GDestroyNotify) pango_win32_dwrite_items_destroy);
HDC
_pango_win32_get_display_dc (void)
{
HDC hdc = g_private_get (&display_dc_key);
+ PangoWin32DWriteItems *items;
if (hdc == NULL)
{
@@ -151,9 +153,22 @@ _pango_win32_get_display_dc (void)
#endif
}
+ items = g_private_get (&dwrite_items);
+ if (items == NULL)
+ {
+ items = pango_win32_init_direct_write ();
+ g_private_set (&dwrite_items, items);
+ }
+
return hdc;
}
+PangoWin32DWriteItems *
+pango_win32_get_direct_write_items (void)
+{
+ return g_private_get (&dwrite_items);
+}
+
/**
* pango_win32_get_dc:
*
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