Patch for building Emacs on Mac OS X. April 26, 2002. See ChangeLog,

lisp/ChangeLog, and src/ChangeLog for list of changes.

1 files changed, 670 insertions, 0 deletions

diff --git a/src/macterm.h b/src/macterm.h
new file mode 100644
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--- /dev/null
+++ b/src/macterm.h
@@ -0,0 +1,670 @@
+/* Display module for Mac OS.
+   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+
+This file is part of GNU Emacs.
+
+GNU Emacs 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 2, or (at your option)
+any later version.
+
+GNU Emacs 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 GNU Emacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Contributed by Andrew Choi (akochoi@mac.com).  */
+
+#include "macgui.h"
+#include "frame.h"
+
+/* The class of this X application.  */
+#define EMACS_CLASS "Emacs"
+
+#define RGB_TO_ULONG(r, g, b) (((r) << 16) | ((g) << 8) | (b))
+
+#define RED_FROM_ULONG(color) ((color) >> 16)
+#define GREEN_FROM_ULONG(color) (((color) >> 8) & 0xff)
+#define BLUE_FROM_ULONG(color) ((color) & 0xff)
+
+#define BLACK_PIX_DEFAULT(f) RGB_TO_ULONG(0,0,0)
+#define WHITE_PIX_DEFAULT(f) RGB_TO_ULONG(255,255,255)
+
+#define FONT_WIDTH(f)   ((f)->max_bounds.width)
+#define FONT_HEIGHT(f)  ((f)->ascent + (f)->descent)
+#define FONT_BASE(f)    ((f)->ascent)
+#define FONT_DESCENT(f) ((f)->descent)
+
+#define FONT_MAX_WIDTH(f) FONT_WIDTH(f)  /* fix later */
+
+enum text_cursor_kinds {
+  NO_CURSOR = -1,
+  FILLED_BOX_CURSOR,
+  HOLLOW_BOX_CURSOR,
+  BAR_CURSOR
+};
+
+/* Structure recording bitmaps and reference count.
+   If REFCOUNT is 0 then this record is free to be reused.  */
+
+struct mac_bitmap_record 
+{
+  char *bitmap_data;
+  int refcount;
+  int height, width;
+};
+
+
+/* For each display (currently only one on mac), we have a structure that
+   records information about it.  */
+
+struct mac_display_info
+{
+  /* Chain of all mac_display_info structures.  */
+  struct mac_display_info *next;
+
+  /* This is a cons cell of the form (NAME . FONT-LIST-CACHE).
+     The same cons cell also appears in x_display_name_list.  */
+  Lisp_Object name_list_element;
+
+  /* Number of frames that are on this display.  */
+  int reference_count;
+
+  /* Dots per inch of the screen.  */
+  double resx, resy;
+
+  /* Number of planes on this screen.  */
+  int n_planes;
+
+  /* Number of bits per pixel on this screen.  */
+  int n_cbits;
+
+  /* Dimensions of this screen.  */
+  int height, width;
+#if 0
+  int height_in,width_in;
+#endif
+
+  /* Mask of things that cause the mouse to be grabbed.  */
+  int grabbed;
+
+#if 0
+  /* Emacs bitmap-id of the default icon bitmap for this frame.
+     Or -1 if none has been allocated yet.  */
+  int icon_bitmap_id;
+
+#endif
+  /* The root window of this screen.  */
+  Window root_window;
+
+  /* The cursor to use for vertical scroll bars.  */
+  struct Cursor *vertical_scroll_bar_cursor;
+
+#if 0
+  /* color palette information.  */
+  int has_palette;
+  struct w32_palette_entry * color_list;
+  unsigned num_colors;
+  HPALETTE palette;
+
+  /* deferred action flags checked when starting frame update.  */
+  int regen_palette;
+
+  /* Keystroke that has been faked by Emacs and will be ignored when
+     received; value is reset after key is received.  */
+  int faked_key;
+
+#endif
+
+  /* A table of all the fonts we have already loaded.  */
+  struct font_info *font_table;
+
+  /* The current capacity of font_table.  */
+  int font_table_size;
+
+  /* The number of fonts actually stored in the font table.
+     font_table[n] is used and valid iff 0 <= n < n_fonts. 0 <=
+     n_fonts <= font_table_size. and font_table[i].name != 0. */
+  int n_fonts;
+
+  /* Minimum width over all characters in all fonts in font_table.  */
+  int smallest_char_width;
+
+  /* Minimum font height over all fonts in font_table.  */
+  int smallest_font_height;
+
+  /* Reusable Graphics Context for drawing a cursor in a non-default face. */
+  XGCValues *scratch_cursor_gc;
+
+  /* These variables describe the range of text currently shown in its
+     mouse-face, together with the window they apply to. As long as
+     the mouse stays within this range, we need not redraw anything on
+     its account.  Rows and columns are glyph matrix positions in
+     MOUSE_FACE_WINDOW.  */
+  int mouse_face_beg_row, mouse_face_beg_col;
+  int mouse_face_beg_x, mouse_face_beg_y;
+  int mouse_face_end_row, mouse_face_end_col;
+  int mouse_face_end_x, mouse_face_end_y;
+  int mouse_face_past_end;
+  Lisp_Object mouse_face_window;
+  int mouse_face_face_id;
+  Lisp_Object mouse_face_overlay;
+
+  /* 1 if a mouse motion event came and we didn't handle it right away because
+     gc was in progress.  */
+  int mouse_face_deferred_gc;
+
+  /* FRAME and X, Y position of mouse when last checked for
+     highlighting.  X and Y can be negative or out of range for the frame.  */
+  struct frame *mouse_face_mouse_frame;
+
+  int mouse_face_mouse_x, mouse_face_mouse_y;
+
+  /* Nonzero means defer mouse-motion highlighting.  */
+  int mouse_face_defer;
+
+  /* Nonzero means that the mouse highlight should not be shown.  */
+  int mouse_face_hidden;
+
+  int mouse_face_image_state;
+
+  char *mac_id_name;
+
+  /* Pointer to bitmap records.  */
+  struct mac_bitmap_record *bitmaps;
+
+  /* Allocated size of bitmaps field.  */
+  int bitmaps_size;
+
+  /* Last used bitmap index.  */
+  int bitmaps_last;
+
+  /* The frame (if any) which has the window that has keyboard focus.
+     Zero if none.  This is examined by Ffocus_frame in w32fns.c.  Note
+     that a mere EnterNotify event can set this; if you need to know the
+     last frame specified in a FocusIn or FocusOut event, use
+     w32_focus_event_frame.  */
+  struct frame *x_focus_frame;
+
+  /* The last frame mentioned in a FocusIn or FocusOut event.  This is
+     separate from w32_focus_frame, because whether or not LeaveNotify
+     events cause us to lose focus depends on whether or not we have
+     received a FocusIn event for it.  */
+  struct frame *x_focus_event_frame;
+
+  /* The frame which currently has the visual highlight, and should get
+     keyboard input (other sorts of input have the frame encoded in the
+     event).  It points to the focus frame's selected window's
+     frame.  It differs from w32_focus_frame when we're using a global
+     minibuffer.  */
+  struct frame *x_highlight_frame;
+
+  /* Cache of images.  */
+  struct image_cache *image_cache;
+};
+
+#define x_display_info mac_display_info
+
+/* This is a chain of structures for all the X displays currently in use.  */
+extern struct x_display_info *x_display_list;
+
+/* This is a chain of structures for all the displays currently in use.  */
+extern struct mac_display_info one_mac_display_info;
+
+/* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
+   one for each element of x_display_list and in the same order.
+   NAME is the name of the frame.
+   FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
+extern Lisp_Object x_display_name_list;
+
+/* A flag to control how to display unibyte 8-bit character.  */
+extern int unibyte_display_via_language_environment;
+
+extern struct x_display_info *x_display_info_for_display P_ ((Display *));
+extern struct x_display_info *x_display_info_for_name P_ ((Lisp_Object));
+
+extern struct mac_display_info *mac_term_init ();
+
+/* When Emacs uses a tty window, tty_display in frame.c points to an
+   x_output struct .  */
+struct x_output
+{
+  unsigned long background_pixel;
+  unsigned long foreground_pixel;
+};
+
+/* The collection of data describing a window on the Mac.  */
+struct mac_output {
+  /* Placeholder for things accessed through output_data.x.  Must
+     appear first.  */
+  struct x_output x_compatible;
+
+  /* Menubar "widget" handle.  */
+  int menubar_widget;
+
+  Window mWP;                   /* pointer to QuickDraw window */
+  FRAME_PTR mFP;                /* points back to the frame struct */
+
+#if 0
+  int mNumCols;                 /* number of characters per column */
+  int mNumRows;                 /* number of characters per row */
+  int mLineHeight;              /* height of one line of text in pixels */
+  int mCharWidth;               /* width of one character in pixels */
+  int mHomeX;                   /* X pixel coordinate of lower left
+                                   corner of character at (0, 0) */
+  int mHomeY;                   /* Y pixel coordinate of lower left
+                                   corner of character at (0, 0) */
+  int mHighlight;               /* current highlight state (0 = off). */
+  int mTermWinSize;             /* num of lines from top of window
+                                   affected by ins_del_lines; set by
+                                   set_terminal_window. */
+#endif /* 0 */
+
+#if 0
+  /* stuffs used by xfaces.c */
+  struct face **param_faces;
+  int n_param_faces;
+  struct face **computed_faces;
+  int n_computed_faces;
+  int size_computed_faces;
+#endif
+
+  /* Position of the Mac window (x and y offsets in global coordinates).  */
+  int left_pos;
+  int top_pos;
+
+  /* Border width of the W32 window as known by the window system.  */
+  int border_width;
+
+  /* Size of the W32 window in pixels.  */
+  int pixel_height, pixel_width;
+
+  /* Height of a line, in pixels.  */
+  int line_height;
+
+  /* Here are the Graphics Contexts for the default font.  */
+  GC normal_gc;                         /* Normal video */
+  GC reverse_gc;                        /* Reverse video */
+  GC cursor_gc;                         /* cursor drawing */
+
+  /* Width of the internal border.  This is a line of background color
+     just inside the window's border.  When the frame is selected,
+     a highlighting is displayed inside the internal border.  */
+  int internal_border_width;
+
+  /* The window used for this frame.
+     May be zero while the frame object is being created
+     and the window has not yet been created.  */
+  Window window_desc;
+
+  /* The window that is the parent of this window.
+     Usually this is a window that was made by the window manager,
+     but it can be the root window, and it can be explicitly specified
+     (see the explicit_parent field, below).  */
+  Window parent_desc;
+
+  /* Default ASCII font of this frame. */
+  XFontStruct *font;
+
+  /* The baseline offset of the default ASCII font.  */
+  int baseline_offset;
+
+  /* If a fontset is specified for this frame instead of font, this
+     value contains an ID of the fontset, else -1.  */
+  int fontset;
+
+  /* Pixel values used for various purposes.
+     border_pixel may be -1 meaning use a gray tile.  */
+  unsigned long cursor_pixel;
+  unsigned long border_pixel;
+  unsigned long mouse_pixel;
+  unsigned long cursor_foreground_pixel;
+
+  /* Foreground color for scroll bars.  A value of -1 means use the
+     default (black for non-toolkit scroll bars).  */
+  unsigned long scroll_bar_foreground_pixel;
+  
+  /* Background color for scroll bars.  A value of -1 means use the
+     default (background color of the frame for non-toolkit scroll
+     bars).  */
+  unsigned long scroll_bar_background_pixel;
+
+  /* Descriptor for the cursor in use for this window.  */
+  struct Cursor *text_cursor;
+  struct Cursor *nontext_cursor;
+  struct Cursor *modeline_cursor;
+  struct Cursor *cross_cursor;
+  struct Cursor *hourglass_cursor;
+#if 0
+  /* Window whose cursor is hourglass_cursor.  This window is temporarily
+     mapped to display a hourglass-cursor.  */
+  Window hourglass_window;
+  
+  /* Non-zero means hourglass cursor is currently displayed.  */
+  unsigned hourglass_p : 1;
+
+  /* Flag to set when the window needs to be completely repainted.  */
+  int needs_exposure;
+
+#endif
+
+  /* What kind of text cursor is drawn in this window right now?
+     (If there is no cursor (phys_cursor_x < 0), then this means nothing.)  */
+  enum text_cursor_kinds current_cursor;
+
+  /* What kind of text cursor should we draw in the future?
+     This should always be filled_box_cursor or bar_cursor.  */
+  enum text_cursor_kinds desired_cursor;
+
+  /* Width of bar cursor (if we are using that).  */
+  int cursor_width;
+
+#if 0
+  DWORD dwStyle;
+#endif
+
+  /* The size of the extra width currently allotted for vertical
+     scroll bars, in pixels.  */
+  int vertical_scroll_bar_extra;
+
+  /* The extra width currently allotted for the areas in which
+     truncation marks, continuation marks, and overlay arrows are
+     displayed.  */
+  int left_fringe_width, right_fringe_width;
+  int fringe_cols, fringes_extra;
+
+  /* This is the gravity value for the specified window position.  */
+  int win_gravity;
+
+  /* The geometry flags for this window.  */
+  int size_hint_flags;
+
+  /* This is the Emacs structure for the display this frame is on.  */
+  /* struct w32_display_info *display_info; */
+
+  /* Nonzero means our parent is another application's window
+     and was explicitly specified.  */
+  char explicit_parent;
+
+  /* Nonzero means tried already to make this frame visible.  */
+  char asked_for_visible;
+
+  /* Nonzero means menubar is currently active.  */
+  char menubar_active;
+
+  /* Nonzero means a menu command is being processed.  */
+  char menu_command_in_progress;
+
+  /* Nonzero means menubar is about to become active, but should be
+     brought up to date first.  */
+  volatile char pending_menu_activation;
+
+  /* Relief GCs, colors etc.  */
+  struct relief
+  {
+    XGCValues *gc;
+    unsigned long pixel;
+    int allocated_p;
+  }
+  black_relief, white_relief;
+
+  /* The background for which the above relief GCs were set up.
+     They are changed only when a different background is involved.  */
+  unsigned long relief_background;
+};
+
+typedef struct mac_output mac_output;
+
+/* Return the Mac window used for displaying data in frame F.  */
+#define FRAME_MAC_WINDOW(f) ((f)->output_data.mac->mWP)
+
+#define FRAME_FOREGROUND_PIXEL(f) ((f)->output_data.x->foreground_pixel)
+#define FRAME_BACKGROUND_PIXEL(f) ((f)->output_data.x->background_pixel)
+
+#define FRAME_FONT(f) ((f)->output_data.mac->font)
+#define FRAME_FONTSET(f) ((f)->output_data.mac->fontset)
+
+#undef FRAME_INTERNAL_BORDER_WIDTH
+#define FRAME_INTERNAL_BORDER_WIDTH(f) \
+     ((f)->output_data.mac->internal_border_width)
+#define FRAME_LINE_HEIGHT(f) ((f)->output_data.mac->line_height)
+/* Width of the default font of frame F.  Must be defined by each
+   terminal specific header.  */
+#define FRAME_DEFAULT_FONT_WIDTH(F)     FONT_WIDTH (FRAME_FONT (F))
+#define FRAME_BASELINE_OFFSET(f) ((f)->output_data.mac->baseline_offset)
+
+/* This gives the w32_display_info structure for the display F is on.  */
+#define FRAME_MAC_DISPLAY_INFO(f) (&one_mac_display_info)
+#define FRAME_X_DISPLAY_INFO(f) (&one_mac_display_info)
+
+/* This is the `Display *' which frame F is on.  */
+#define FRAME_MAC_DISPLAY(f) (0)
+
+/* This is the 'font_info *' which frame F has.  */
+#define FRAME_MAC_FONT_TABLE(f) (FRAME_MAC_DISPLAY_INFO (f)->font_table)
+
+/* These two really ought to be called FRAME_PIXEL_{WIDTH,HEIGHT}.  */
+#define PIXEL_WIDTH(f) ((f)->output_data.mac->pixel_width)
+#define PIXEL_HEIGHT(f) ((f)->output_data.mac->pixel_height)
+
+#define FRAME_DESIRED_CURSOR(f) ((f)->output_data.mac->desired_cursor)
+
+/* Value is the smallest width of any character in any font on frame F.  */
+
+#define FRAME_SMALLEST_CHAR_WIDTH(F) \
+     FRAME_MAC_DISPLAY_INFO(F)->smallest_char_width
+
+/* Value is the smallest height of any font on frame F.  */
+
+#define FRAME_SMALLEST_FONT_HEIGHT(F) \
+     FRAME_MAC_DISPLAY_INFO(F)->smallest_font_height
+
+/* Return a pointer to the image cache of frame F.  */
+
+#define FRAME_X_IMAGE_CACHE(F) FRAME_MAC_DISPLAY_INFO ((F))->image_cache
+
+
+/* Total width of fringes reserved for drawing truncation bitmaps,
+   continuation bitmaps and alike.  The width is in canonical char
+   units of the frame.  This must currently be the case because window
+   sizes aren't pixel values.  If it weren't the case, we wouldn't be
+   able to split windows horizontally nicely.  */
+
+#define FRAME_X_FRINGE_COLS(F)  ((F)->output_data.mac->fringe_cols)
+
+/* Total width of fringes in pixels.  */
+
+#define FRAME_X_FRINGE_WIDTH(F) ((F)->output_data.mac->fringes_extra)
+
+/* Pixel-width of the left and right fringe.  */
+
+#define FRAME_X_LEFT_FRINGE_WIDTH(F) ((F)->output_data.mac->left_fringe_width)
+#define FRAME_X_RIGHT_FRINGE_WIDTH(F) ((F)->output_data.mac->right_fringe_width)
+
+
+
+/* Mac-specific scroll bar stuff.  */
+
+/* We represent scroll bars as lisp vectors.  This allows us to place
+   references to them in windows without worrying about whether we'll
+   end up with windows referring to dead scroll bars; the garbage
+   collector will free it when its time comes.
+
+   We use struct scroll_bar as a template for accessing fields of the
+   vector.  */
+
+struct scroll_bar {
+
+  /* These fields are shared by all vectors.  */
+  EMACS_INT size_from_Lisp_Vector_struct;
+  struct Lisp_Vector *next_from_Lisp_Vector_struct;
+
+  /* The window we're a scroll bar for.  */
+  Lisp_Object window;
+
+  /* The next and previous in the chain of scroll bars in this frame.  */
+  Lisp_Object next, prev;
+
+  /* The Mac control handle of this scroll bar.  Since this is a full
+     32-bit quantity, we store it split into two 32-bit values.  */
+  Lisp_Object control_handle_low, control_handle_high;
+
+  /* The position and size of the scroll bar in pixels, relative to the
+     frame.  */
+  Lisp_Object top, left, width, height;
+
+  /* The starting and ending positions of the handle, relative to the
+     handle area (i.e. zero is the top position, not
+     SCROLL_BAR_TOP_BORDER).  If they're equal, that means the handle
+     hasn't been drawn yet.
+
+     These are not actually the locations where the beginning and end
+     are drawn; in order to keep handles from becoming invisible when
+     editing large files, we establish a minimum height by always
+     drawing handle bottoms VERTICAL_SCROLL_BAR_MIN_HANDLE pixels below
+     where they would be normally; the bottom and top are in a
+     different co-ordinate system.  */
+  Lisp_Object start, end;
+
+  /* If the scroll bar handle is currently being dragged by the user,
+     this is the number of pixels from the top of the handle to the
+     place where the user grabbed it.  If the handle isn't currently
+     being dragged, this is Qnil.  */
+  Lisp_Object dragging;
+};
+
+/* The number of elements a vector holding a struct scroll_bar needs.  */
+#define SCROLL_BAR_VEC_SIZE                                     \
+  ((sizeof (struct scroll_bar)                                  \
+    - sizeof (EMACS_INT) - sizeof (struct Lisp_Vector *))       \
+   / sizeof (Lisp_Object))
+
+/* Turning a lisp vector value into a pointer to a struct scroll_bar.  */
+#define XSCROLL_BAR(vec) ((struct scroll_bar *) XVECTOR (vec))
+
+
+/* Building a 32-bit C integer from two 16-bit lisp integers.  */
+#define SCROLL_BAR_PACK(low, high) (XINT (high) << 16 | XINT (low))
+
+/* Setting two lisp integers to the low and high words of a 32-bit C int.  */
+#define SCROLL_BAR_UNPACK(low, high, int32) \
+  (XSETINT ((low),   (int32)        & 0xffff), \
+   XSETINT ((high), ((int32) >> 16) & 0xffff))
+
+
+/* Extract the Mac control handle of the scroll bar from a struct
+   scroll_bar.  */
+#define SCROLL_BAR_CONTROL_HANDLE(ptr) \
+  ((ControlHandle) SCROLL_BAR_PACK ((ptr)->control_handle_low, \
+                                    (ptr)->control_handle_high))
+
+/* Store a Mac control handle in a struct scroll_bar.  */
+#define SET_SCROLL_BAR_CONTROL_HANDLE(ptr, id) \
+  (SCROLL_BAR_UNPACK ((ptr)->control_handle_low, \
+                      (ptr)->control_handle_high, (int) id))
+
+/* Return the inside width of a vertical scroll bar, given the outside
+   width.  */
+#define VERTICAL_SCROLL_BAR_INSIDE_WIDTH(f,width) \
+  ((width) \
+   - VERTICAL_SCROLL_BAR_LEFT_BORDER \
+   - VERTICAL_SCROLL_BAR_RIGHT_BORDER \
+   - VERTICAL_SCROLL_BAR_WIDTH_TRIM * 2)
+
+/* Return the length of the rectangle within which the top of the
+   handle must stay.  This isn't equivalent to the inside height,
+   because the scroll bar handle has a minimum height.  
+
+   This is the real range of motion for the scroll bar, so when we're
+   scaling buffer positions to scroll bar positions, we use this, not
+   VERTICAL_SCROLL_BAR_INSIDE_HEIGHT.  */
+#define VERTICAL_SCROLL_BAR_TOP_RANGE(f,height) \
+  (VERTICAL_SCROLL_BAR_INSIDE_HEIGHT (f, height) \
+   - VERTICAL_SCROLL_BAR_MIN_HANDLE - UP_AND_DOWN_ARROWS)
+
+/* Return the inside height of vertical scroll bar, given the outside
+   height.  See VERTICAL_SCROLL_BAR_TOP_RANGE too.  */
+#define VERTICAL_SCROLL_BAR_INSIDE_HEIGHT(f,height) \
+  ((height) - VERTICAL_SCROLL_BAR_TOP_BORDER \
+   - VERTICAL_SCROLL_BAR_BOTTOM_BORDER)
+
+
+/* Border widths for scroll bars.
+
+   Scroll bar windows don't have any borders; their border width is
+   set to zero, and we redraw borders ourselves.  This makes the code
+   a bit cleaner, since we don't have to convert between outside width
+   (used when relating to the rest of the screen) and inside width
+   (used when sizing and drawing the scroll bar window itself).
+
+   The handle moves up and down/back and forth in a rectangle inset
+   from the edges of the scroll bar.  These are widths by which we
+   inset the handle boundaries from the scroll bar edges.  */
+#define VERTICAL_SCROLL_BAR_LEFT_BORDER (0)
+#define VERTICAL_SCROLL_BAR_RIGHT_BORDER (0)
+#define VERTICAL_SCROLL_BAR_TOP_BORDER (0)
+#define VERTICAL_SCROLL_BAR_BOTTOM_BORDER (0)
+
+/* Minimum lengths for scroll bar handles, in pixels.  */
+#define VERTICAL_SCROLL_BAR_MIN_HANDLE (16)
+
+/* Combined length of up and down arrow boxes in scroll bars, in pixels.  */
+#define UP_AND_DOWN_ARROWS (32)
+
+/* Trimming off a few pixels from each side prevents
+   text from glomming up against the scroll bar */
+#define VERTICAL_SCROLL_BAR_WIDTH_TRIM (0)
+
+
+/* Manipulating pixel sizes and character sizes.
+   Knowledge of which factors affect the overall size of the window should
+   be hidden in these macros, if that's possible.
+
+   Return the upper/left pixel position of the character cell on frame F
+   at ROW/COL.  */
+#define CHAR_TO_PIXEL_ROW(f, row) \
+  ((f)->output_data.mac->internal_border_width \
+   + (row) * (f)->output_data.mac->line_height)
+#define CHAR_TO_PIXEL_COL(f, col) \
+  ((f)->output_data.mac->internal_border_width \
+   + (col) * FONT_WIDTH ((f)->output_data.mac->font))
+
+/* Return the pixel width/height of frame F if it has
+   WIDTH columns/HEIGHT rows.  */
+#define CHAR_TO_PIXEL_WIDTH(f, width) \
+  (CHAR_TO_PIXEL_COL (f, width) \
+   + (f)->output_data.mac->vertical_scroll_bar_extra \
+   + (f)->output_data.mac->fringes_extra \
+   + (f)->output_data.mac->internal_border_width)
+#define CHAR_TO_PIXEL_HEIGHT(f, height) \
+  (CHAR_TO_PIXEL_ROW (f, height) \
+   + (f)->output_data.mac->internal_border_width)
+
+
+/* Return the row/column (zero-based) of the character cell containing 
+   the pixel on FRAME at ROW/COL.  */
+#define PIXEL_TO_CHAR_ROW(f, row) \
+  (((row) - (f)->output_data.mac->internal_border_width) \
+   / (f)->output_data.mac->line_height)
+#define PIXEL_TO_CHAR_COL(f, col) \
+  (((col) - (f)->output_data.mac->internal_border_width) \
+   / FONT_WIDTH ((f)->output_data.mac->font))
+
+/* How many columns/rows of text can we fit in WIDTH/HEIGHT pixels on
+   frame F?  */
+#define PIXEL_TO_CHAR_WIDTH(f, width) \
+  (PIXEL_TO_CHAR_COL (f, ((width) \
+                          - (f)->output_data.mac->internal_border_width \
+                          - (f)->output_data.mac->fringes_extra \
+                          - (f)->output_data.mac->vertical_scroll_bar_extra)))
+#define PIXEL_TO_CHAR_HEIGHT(f, height) \
+  (PIXEL_TO_CHAR_ROW (f, ((height) \
+                          - (f)->output_data.mac->internal_border_width)))
+
+struct frame * check_x_frame (Lisp_Object);
+