/* Font backend for the Microsoft Windows API.
- Copyright (C) 2007-2013 Free Software Foundation, Inc.
+ Copyright (C) 2007-2014 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include "fontset.h"
#include "font.h"
#include "w32font.h"
+#ifdef WINDOWSNT
+#include "w32.h"
+#endif
/* Cleartype available on Windows XP, cleartype_natural from XP SP1.
The latter does not try to fit cleartype smoothed fonts into the
style variations if the font name is not specified. */
static void list_all_matching_fonts (struct font_callback_data *);
-static BOOL g_b_init_is_w9x;
+#ifdef WINDOWSNT
+
static BOOL g_b_init_get_outline_metrics_w;
static BOOL g_b_init_get_text_metrics_w;
static BOOL g_b_init_get_glyph_outline_w;
static BOOL g_b_init_get_glyph_outline_w;
+static BOOL g_b_init_get_char_width_32_w;
typedef UINT (WINAPI * GetOutlineTextMetricsW_Proc) (
HDC hdc,
DWORD cbBuffer,
LPVOID lpvBuffer,
const MAT2 *lpmat2);
+typedef BOOL (WINAPI * GetCharWidth32W_Proc) (
+ HDC hdc,
+ UINT uFirstChar,
+ UINT uLastChar,
+ LPINT lpBuffer);
/* Several "wide" functions we use to support the font backends are
unavailable on Windows 9X, unless UNICOWS.DLL is installed (their
static HMODULE
w32_load_unicows_or_gdi32 (void)
{
- static BOOL is_9x = 0;
- OSVERSIONINFO os_ver;
- HMODULE ret;
- if (g_b_init_is_w9x == 0)
- {
- g_b_init_is_w9x = 1;
- ZeroMemory (&os_ver, sizeof (OSVERSIONINFO));
- os_ver.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
- if (GetVersionEx (&os_ver))
- is_9x = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS);
- }
- if (is_9x)
- {
- ret = LoadLibrary ("Unicows.dll");
- if (!ret)
- {
- int button;
-
- button = MessageBox (NULL,
- "Emacs cannot load the UNICOWS.DLL library.\n"
- "This library is essential for using Emacs\n"
- "on this system. You need to install it.\n\n"
- "However, you can still use Emacs by invoking\n"
- "it with the '-nw' command-line option.\n\n"
- "Emacs will exit when you click OK.",
- "Emacs cannot load UNICOWS.DLL",
- MB_ICONERROR | MB_TASKMODAL
- | MB_SETFOREGROUND | MB_OK);
- switch (button)
- {
- case IDOK:
- default:
- exit (1);
- }
- }
- }
- else
- ret = LoadLibrary ("Gdi32.dll");
- return ret;
+ return maybe_load_unicows_dll ();
}
/* The following 3 functions call the problematic "wide" APIs via
lpvBuffer, lpmat2);
}
+static DWORD WINAPI
+get_char_width_32_w (HDC hdc, UINT uFirstChar, UINT uLastChar, LPINT lpBuffer)
+{
+ static GetCharWidth32W_Proc s_pfn_Get_Char_Width_32W = NULL;
+ HMODULE hm_unicows = NULL;
+ if (g_b_init_get_char_width_32_w == 0)
+ {
+ g_b_init_get_char_width_32_w = 1;
+ hm_unicows = w32_load_unicows_or_gdi32 ();
+ if (hm_unicows)
+ s_pfn_Get_Char_Width_32W = (GetCharWidth32W_Proc)
+ GetProcAddress (hm_unicows, "GetCharWidth32W");
+ }
+ eassert (s_pfn_Get_Char_Width_32W != NULL);
+ return s_pfn_Get_Char_Width_32W (hdc, uFirstChar, uLastChar, lpBuffer);
+}
+
+#else /* Cygwin */
+
+/* Cygwin doesn't support Windows 9X, and links against GDI32.DLL, so
+ it can just call these functions directly. */
+#define get_outline_metrics_w(h,d,o) GetOutlineTextMetricsW(h,d,o)
+#define get_text_metrics_w(h,t) GetTextMetricsW(h,t)
+#define get_glyph_outline_w(h,uc,f,gm,b,v,m) \
+ GetGlyphOutlineW(h,uc,f,gm,b,v,m)
+#define get_char_width_32_w(h,fc,lc,b) GetCharWidth32W(h,fc,lc,b)
+
+#endif /* Cygwin */
+
static int
memq_no_quit (Lisp_Object elt, Lisp_Object list)
{
font->baseline_offset = 0;
font->relative_compose = 0;
font->default_ascent = w32_font->metrics.tmAscent;
- font->font_encoder = NULL;
font->pixel_size = size;
font->driver = &w32font_driver;
/* Use format cached during list, as the information we have access to
GLYPHMETRICS gm;
MAT2 transform;
unsigned int options = GGO_METRICS;
+ INT width;
if (w32_font->glyph_idx)
options |= GGO_GLYPH_INDEX;
metrics->width = gm.gmCellIncX;
metrics->status = W32METRIC_SUCCESS;
}
+ else if (get_char_width_32_w (dc, code, code, &width) != 0)
+ {
+ metrics->lbearing = 0;
+ metrics->rbearing = width;
+ metrics->width = width;
+ metrics->status = W32METRIC_SUCCESS;
+ }
else
metrics->status = W32METRIC_FAIL;
}
struct font_driver w32font_driver =
{
- 0, /* Qgdi */
+ LISP_INITIALLY_ZERO, /* Qgdi */
0, /* case insensitive */
w32font_get_cache,
w32font_list,
void
globals_of_w32font (void)
{
- g_b_init_is_w9x = 0;
+#ifdef WINDOWSNT
g_b_init_get_outline_metrics_w = 0;
g_b_init_get_text_metrics_w = 0;
g_b_init_get_glyph_outline_w = 0;
+ g_b_init_get_char_width_32_w = 0;
+#endif
}