Adding upstream version 2.06.upstream/2.06upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 153 insertions, 0 deletions

diff --git a/include/grub/font.h b/include/grub/font.h
new file mode 100644
index 0000000..708fa42
--- /dev/null
+++ b/include/grub/font.h
@@ -0,0 +1,153 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2003,2007,2008,2009  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_FONT_HEADER
+#define GRUB_FONT_HEADER	1
+
+#include <grub/types.h>
+#include <grub/video.h>
+#include <grub/file.h>
+#include <grub/unicode.h>
+
+/* Forward declaration of opaque structure grub_font.
+   Users only pass struct grub_font pointers to the font module functions,
+   and do not have knowledge of the structure contents.  */
+/* Full structure was moved here for inline function but still
+   shouldn't be used directly.
+ */
+struct grub_font
+{
+  char *name;
+  grub_file_t file;
+  char *family;
+  short point_size;
+  short weight;
+  short max_char_width;
+  short max_char_height;
+  short ascent;
+  short descent;
+  short leading;
+  grub_uint32_t num_chars;
+  struct char_index_entry *char_index;
+  grub_uint16_t *bmp_idx;
+};
+
+/* Font type used to access font functions.  */
+typedef struct grub_font *grub_font_t;
+
+struct grub_font_node
+{
+  struct grub_font_node *next;
+  grub_font_t value;
+};
+
+/* Global font registry.  */
+extern struct grub_font_node *grub_font_list;
+
+struct grub_font_glyph
+{
+  /* Reference to the font this glyph belongs to.  */
+  grub_font_t font;
+
+  /* Glyph bitmap width in pixels.  */
+  grub_uint16_t width;
+
+  /* Glyph bitmap height in pixels.  */
+  grub_uint16_t height;
+
+  /* Glyph bitmap x offset in pixels.  Add to screen coordinate.  */
+  grub_int16_t offset_x;
+
+  /* Glyph bitmap y offset in pixels.  Subtract from screen coordinate.  */
+  grub_int16_t offset_y;
+
+  /* Number of pixels to advance to start the next character.  */
+  grub_uint16_t device_width;
+
+  /* Row-major order, packed bits (no padding; rows can break within a byte).
+     The length of the array is (width * height + 7) / 8.  Within a
+     byte, the most significant bit is the first (leftmost/uppermost) pixel.
+     Pixels are coded as bits, value 1 meaning of opaque pixel and 0 is
+     transparent.  If the length of the array does not fit byte boundary, it
+     will be padded with 0 bits to make it fit.  */
+  grub_uint8_t bitmap[0];
+};
+
+/* Part of code field which is really used as such.  */
+#define GRUB_FONT_CODE_CHAR_MASK     0x001fffff
+#define GRUB_FONT_CODE_RIGHT_JOINED  0x80000000
+#define GRUB_FONT_CODE_LEFT_JOINED   0x40000000
+
+/* Initialize the font loader.
+   Must be called before any fonts are loaded or used.  */
+void grub_font_loader_init (void);
+
+/* Load a font and add it to the beginning of the global font list.
+   Returns: 0 upon success; nonzero upon failure.  */
+grub_font_t EXPORT_FUNC(grub_font_load) (const char *filename);
+
+/* Get the font that has the specified name.  Font names are in the form
+   "Family Name Bold Italic 14", where Bold and Italic are optional.
+   If no font matches the name specified, the most recently loaded font
+   is returned as a fallback.  */
+grub_font_t EXPORT_FUNC (grub_font_get) (const char *font_name);
+
+const char *EXPORT_FUNC (grub_font_get_name) (grub_font_t font);
+
+int EXPORT_FUNC (grub_font_get_max_char_width) (grub_font_t font);
+
+/* Get the maximum height of any character in the font in pixels.  */
+static inline int
+grub_font_get_max_char_height (grub_font_t font)
+{
+  return font->max_char_height;
+}
+
+/* Get the distance in pixels from the top of characters to the baseline.  */
+static inline int
+grub_font_get_ascent (grub_font_t font)
+{
+  return font->ascent;
+}
+
+int EXPORT_FUNC (grub_font_get_descent) (grub_font_t font);
+
+int EXPORT_FUNC (grub_font_get_leading) (grub_font_t font);
+
+int EXPORT_FUNC (grub_font_get_height) (grub_font_t font);
+
+int EXPORT_FUNC (grub_font_get_xheight) (grub_font_t font);
+
+struct grub_font_glyph *EXPORT_FUNC (grub_font_get_glyph) (grub_font_t font,
+							   grub_uint32_t code);
+
+struct grub_font_glyph *EXPORT_FUNC (grub_font_get_glyph_with_fallback) (grub_font_t font,
+									 grub_uint32_t code);
+
+grub_err_t EXPORT_FUNC (grub_font_draw_glyph) (struct grub_font_glyph *glyph,
+					       grub_video_color_t color,
+					       int left_x, int baseline_y);
+
+int
+EXPORT_FUNC (grub_font_get_constructed_device_width) (grub_font_t hinted_font,
+					const struct grub_unicode_glyph *glyph_id);
+struct grub_font_glyph *
+EXPORT_FUNC (grub_font_construct_glyph) (grub_font_t hinted_font,
+			   const struct grub_unicode_glyph *glyph_id);
+
+#endif /* ! GRUB_FONT_HEADER */