macterm.c 295 KB
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/* Implementation of GUI terminal on the Mac OS.
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   Copyright (C) 2000, 2001, 2002, 2003, 2004,
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                 2005, 2006 Free Software Foundation, Inc.
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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
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.  */
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/* Contributed by Andrew Choi (akochoi@mac.com).  */
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#include <config.h>
#include <signal.h>
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#include <stdio.h>
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#include "lisp.h"
#include "blockinput.h"

#include "macterm.h"

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#ifndef MAC_OSX
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#include <alloca.h>
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#endif
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#if TARGET_API_MAC_CARBON
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/* USE_CARBON_EVENTS determines if the Carbon Event Manager is used to
   obtain events from the event queue.  If set to 0, WaitNextEvent is
   used instead.  */
#define USE_CARBON_EVENTS 1
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#else /* not TARGET_API_MAC_CARBON */
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#include <Quickdraw.h>
#include <ToolUtils.h>
#include <Sound.h>
#include <Events.h>
#include <Script.h>
#include <Resources.h>
#include <Fonts.h>
#include <TextUtils.h>
#include <LowMem.h>
#include <Controls.h>
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#include <Windows.h>
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#if defined (__MRC__) || (__MSL__ >= 0x6000)
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#include <ControlDefinitions.h>
#endif

#if __profile__
#include <profiler.h>
#endif
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#endif /* not TARGET_API_MAC_CARBON */
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#include "systty.h"
#include "systime.h"

#include <ctype.h>
#include <errno.h>
#include <setjmp.h>
#include <sys/stat.h>

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#include "charset.h"
#include "coding.h"
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#include "frame.h"
#include "dispextern.h"
#include "fontset.h"
#include "termhooks.h"
#include "termopts.h"
#include "termchar.h"
#include "gnu.h"
#include "disptab.h"
#include "buffer.h"
#include "window.h"
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#include "keyboard.h"
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#include "intervals.h"
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#include "atimer.h"
#include "keymap.h"
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/* Non-nil means Emacs uses toolkit scroll bars.  */
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Lisp_Object Vx_toolkit_scroll_bars;
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/* If non-zero, the text will be rendered using Core Graphics text
   rendering which may anti-alias the text.  */
int mac_use_core_graphics;
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/* Non-zero means that a HELP_EVENT has been generated since Emacs
   start.  */

static int any_help_event_p;

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/* Last window where we saw the mouse.  Used by mouse-autoselect-window.  */
static Lisp_Object last_window;
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/* Non-zero means make use of UNDERLINE_POSITION font properties.
   (Not yet supported.)  */
int x_use_underline_position_properties;

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/* This is a chain of structures for all the X displays currently in
   use.  */

struct x_display_info *x_display_list;

/* This is a list of cons cells, each of the form (NAME
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   FONT-LIST-CACHE . RESOURCE-DATABASE), 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.  RESOURCE-DATABASE preserves the X Resource Database
   equivalent, which is implemented with a Lisp object, for the
   display. */
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Lisp_Object x_display_name_list;

/* This is display since Mac does not support multiple ones.  */
struct mac_display_info one_mac_display_info;

/* Frame being updated by update_frame.  This is declared in term.c.
   This is set by update_begin and looked at by all the XT functions.
   It is zero while not inside an update.  In that case, the XT
   functions assume that `selected_frame' is the frame to apply to.  */

extern struct frame *updating_frame;

/* This is a frame waiting to be auto-raised, within XTread_socket.  */

struct frame *pending_autoraise_frame;

/* Mouse movement.

   Formerly, we used PointerMotionHintMask (in standard_event_mask)
   so that we would have to call XQueryPointer after each MotionNotify
   event to ask for another such event.  However, this made mouse tracking
   slow, and there was a bug that made it eventually stop.

   Simply asking for MotionNotify all the time seems to work better.

   In order to avoid asking for motion events and then throwing most
   of them away or busy-polling the server for mouse positions, we ask
   the server for pointer motion hints.  This means that we get only
   one event per group of mouse movements.  "Groups" are delimited by
   other kinds of events (focus changes and button clicks, for
   example), or by XQueryPointer calls; when one of these happens, we
   get another MotionNotify event the next time the mouse moves.  This
   is at least as efficient as getting motion events when mouse
   tracking is on, and I suspect only negligibly worse when tracking
   is off.  */

/* Where the mouse was last time we reported a mouse event.  */

static Rect last_mouse_glyph;
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static FRAME_PTR last_mouse_glyph_frame;
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/* The scroll bar in which the last X motion event occurred.

   If the last X motion event occurred in a scroll bar, we set this so
   XTmouse_position can know whether to report a scroll bar motion or
   an ordinary motion.

   If the last X motion event didn't occur in a scroll bar, we set
   this to Qnil, to tell XTmouse_position to return an ordinary motion
   event.  */

static Lisp_Object last_mouse_scroll_bar;

/* This is a hack.  We would really prefer that XTmouse_position would
   return the time associated with the position it returns, but there
   doesn't seem to be any way to wrest the time-stamp from the server
   along with the position query.  So, we just keep track of the time
   of the last movement we received, and return that in hopes that
   it's somewhat accurate.  */

static Time last_mouse_movement_time;

struct scroll_bar *tracked_scroll_bar = NULL;

/* Incremented by XTread_socket whenever it really tries to read
   events.  */

#ifdef __STDC__
static int volatile input_signal_count;
#else
static int input_signal_count;
#endif

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extern Lisp_Object Vsystem_name;
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/* A mask of extra modifier bits to put into every keyboard char.  */

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extern EMACS_INT extra_keyboard_modifiers;
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/* The keysyms to use for the various modifiers.  */

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static Lisp_Object Qalt, Qhyper, Qsuper, Qcontrol, Qmeta, Qmodifier_value;
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extern int inhibit_window_system;
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#if __MRC__ && !TARGET_API_MAC_CARBON
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QDGlobals qd;  /* QuickDraw global information structure.  */
#endif

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#define mac_window_to_frame(wp) (((mac_output *) GetWRefCon (wp))->mFP)
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struct mac_display_info *mac_display_info_for_display (Display *);
static void x_update_window_end P_ ((struct window *, int, int));
static int x_io_error_quitter P_ ((Display *));
int x_catch_errors P_ ((Display *));
void x_uncatch_errors P_ ((Display *, int));
void x_lower_frame P_ ((struct frame *));
void x_scroll_bar_clear P_ ((struct frame *));
int x_had_errors_p P_ ((Display *));
void x_wm_set_size_hint P_ ((struct frame *, long, int));
void x_raise_frame P_ ((struct frame *));
void x_set_window_size P_ ((struct frame *, int, int, int));
void x_wm_set_window_state P_ ((struct frame *, int));
void x_wm_set_icon_pixmap P_ ((struct frame *, int));
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void mac_initialize P_ ((void));
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static void x_font_min_bounds P_ ((XFontStruct *, int *, int *));
static int x_compute_min_glyph_bounds P_ ((struct frame *));
static void x_update_end P_ ((struct frame *));
static void XTframe_up_to_date P_ ((struct frame *));
static void XTset_terminal_modes P_ ((void));
static void XTreset_terminal_modes P_ ((void));
static void x_clear_frame P_ ((void));
static void frame_highlight P_ ((struct frame *));
static void frame_unhighlight P_ ((struct frame *));
static void x_new_focus_frame P_ ((struct x_display_info *, struct frame *));
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static void mac_focus_changed P_ ((int, struct mac_display_info *,
				   struct frame *, struct input_event *));
static void x_detect_focus_change P_ ((struct mac_display_info *,
				       EventRecord *, struct input_event *));
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static void XTframe_rehighlight P_ ((struct frame *));
static void x_frame_rehighlight P_ ((struct x_display_info *));
static void x_draw_hollow_cursor P_ ((struct window *, struct glyph_row *));
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static void x_draw_bar_cursor P_ ((struct window *, struct glyph_row *, int,
				   enum text_cursor_kinds));

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static void x_clip_to_row P_ ((struct window *, struct glyph_row *, int, GC));
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static void x_flush P_ ((struct frame *f));
static void x_update_begin P_ ((struct frame *));
static void x_update_window_begin P_ ((struct window *));
static void x_after_update_window_line P_ ((struct glyph_row *));
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static void x_scroll_bar_report_motion P_ ((struct frame **, Lisp_Object *,
					    enum scroll_bar_part *,
					    Lisp_Object *, Lisp_Object *,
					    unsigned long *));
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static int is_emacs_window P_ ((WindowPtr));
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static XCharStruct *mac_per_char_metric P_ ((XFontStruct *, XChar2b *, int));
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static void XSetFont P_ ((Display *, GC, XFontStruct *));
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/* Defined in macmenu.h.  */
extern void menubar_selection_callback (FRAME_PTR, int);

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#define GC_FORE_COLOR(gc)	(&(gc)->fore_color)
#define GC_BACK_COLOR(gc)	(&(gc)->back_color)
#define GC_FONT(gc)		((gc)->xgcv.font)
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#define FRAME_NORMAL_GC(f)	((f)->output_data.mac->normal_gc)
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#define CG_SET_FILL_COLOR(context, color)			\
  CGContextSetRGBFillColor (context,					\
			    RED_FROM_ULONG (color) / 255.0f,		\
			    GREEN_FROM_ULONG (color) / 255.0f,		\
			    BLUE_FROM_ULONG (color) / 255.0f, 1.0f)
#define CG_SET_STROKE_COLOR(context, color)		\
  CGContextSetRGBStrokeColor (context,					\
			      RED_FROM_ULONG (color) / 255.0f,		\
			      GREEN_FROM_ULONG (color) / 255.0f,	\
			      BLUE_FROM_ULONG (color) / 255.0f, 1.0f)
#if USE_CG_DRAWING
#define FRAME_CG_CONTEXT(f)	((f)->output_data.mac->cg_context)

static CGContextRef
mac_begin_cg_clip (f, gc)
     struct frame *f;
     GC gc;
{
  CGContextRef context = FRAME_CG_CONTEXT (f);

  if (!context)
    {
      QDBeginCGContext (GetWindowPort (FRAME_MAC_WINDOW (f)), &context);
      FRAME_CG_CONTEXT (f) = context;
    }

  CGContextSaveGState (context);
  CGContextTranslateCTM (context, 0, FRAME_PIXEL_HEIGHT (f));
  CGContextScaleCTM (context, 1, -1);
  if (gc && gc->n_clip_rects)
    CGContextClipToRects (context, gc->clip_rects, gc->n_clip_rects);

  return context;
}

static void
mac_end_cg_clip (f)
     struct frame *f;
{
  CGContextRestoreGState (FRAME_CG_CONTEXT (f));
}

void
mac_prepare_for_quickdraw (f)
     struct frame *f;
{
  if (f == NULL)
    {
      Lisp_Object rest, frame;
      FOR_EACH_FRAME (rest, frame)
	if (FRAME_MAC_P (XFRAME (frame)))
	  mac_prepare_for_quickdraw (XFRAME (frame));
    }
  else
    {
      CGContextRef context = FRAME_CG_CONTEXT (f);

      if (context)
	{
	  CGContextSynchronize (context);
	  QDEndCGContext (GetWindowPort (FRAME_MAC_WINDOW (f)),
			  &FRAME_CG_CONTEXT (f));
	}
    }
}
#endif
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static RgnHandle saved_port_clip_region = NULL;

static void
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mac_begin_clip (gc)
     GC gc;
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{
  static RgnHandle new_region = NULL;

  if (saved_port_clip_region == NULL)
    saved_port_clip_region = NewRgn ();
  if (new_region == NULL)
    new_region = NewRgn ();

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  if (gc->n_clip_rects)
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    {
      GetClip (saved_port_clip_region);
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      SectRgn (saved_port_clip_region, gc->clip_region, new_region);
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      SetClip (new_region);
    }
}

static void
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mac_end_clip (gc)
     GC gc;
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{
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  if (gc->n_clip_rects)
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    SetClip (saved_port_clip_region);
}

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/* X display function emulation */

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void
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XFreePixmap (display, pixmap)
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     Display *display;		/* not used */
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     Pixmap pixmap;
{
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  DisposeGWorld (pixmap);
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}


/* Mac version of XDrawLine.  */

static void
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mac_draw_line (f, gc, x1, y1, x2, y2)
     struct frame *f;
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     GC gc;
     int x1, y1, x2, y2;
{
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#if USE_CG_DRAWING
  CGContextRef context;

  context = mac_begin_cg_clip (f, gc);
  CG_SET_STROKE_COLOR (context, gc->xgcv.foreground);
  CGContextBeginPath (context);
  CGContextMoveToPoint (context, x1 + 0.5f, y1 + 0.5f);
  CGContextAddLineToPoint (context, x2 + 0.5f, y2 + 0.5f);
  CGContextClosePath (context);
  CGContextStrokePath (context);
  mac_end_cg_clip (f);
#else
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  SetPortWindowPort (FRAME_MAC_WINDOW (f));
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  RGBForeColor (GC_FORE_COLOR (gc));
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  mac_begin_clip (gc);
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  MoveTo (x1, y1);
  LineTo (x2, y2);
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  mac_end_clip (gc);
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#endif
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}

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void
mac_draw_line_to_pixmap (display, p, gc, x1, y1, x2, y2)
     Display *display;
     Pixmap p;
     GC gc;
     int x1, y1, x2, y2;
{
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  CGrafPtr old_port;
  GDHandle old_gdh;

  GetGWorld (&old_port, &old_gdh);
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  SetGWorld (p, NULL);

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  RGBForeColor (GC_FORE_COLOR (gc));
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  LockPixels (GetGWorldPixMap (p));
  MoveTo (x1, y1);
  LineTo (x2, y2);
  UnlockPixels (GetGWorldPixMap (p));
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  SetGWorld (old_port, old_gdh);
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}

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static void
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mac_erase_rectangle (f, gc, x, y, width, height)
     struct frame *f;
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     GC gc;
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     int x, y;
     unsigned int width, height;
{
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#if USE_CG_DRAWING
  CGContextRef context;

  context = mac_begin_cg_clip (f, gc);
  CG_SET_FILL_COLOR (context, gc->xgcv.background);
  CGContextFillRect (context, CGRectMake (x, y, width, height));
  mac_end_cg_clip (f);
#else
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  Rect r;

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  SetPortWindowPort (FRAME_MAC_WINDOW (f));
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  RGBBackColor (GC_BACK_COLOR (gc));
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  SetRect (&r, x, y, x + width, y + height);

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  mac_begin_clip (gc);
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  EraseRect (&r);
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  mac_end_clip (gc);
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  RGBBackColor (GC_BACK_COLOR (FRAME_NORMAL_GC (f)));
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#endif
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}


/* Mac version of XClearArea.  */

void
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mac_clear_area (f, x, y, width, height)
     struct frame *f;
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     int x, y;
     unsigned int width, height;
{
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  mac_erase_rectangle (f, FRAME_NORMAL_GC (f), x, y, width, height);
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}

/* Mac version of XClearWindow.  */

static void
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mac_clear_window (f)
     struct frame *f;
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{
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#if USE_CG_DRAWING
  CGContextRef context;
  GC gc = FRAME_NORMAL_GC (f);

  context = mac_begin_cg_clip (f, NULL);
  CG_SET_FILL_COLOR (context, gc->xgcv.background);
  CGContextFillRect (context, CGRectMake (0, 0, FRAME_PIXEL_WIDTH (f),
					  FRAME_PIXEL_HEIGHT (f)));
  mac_end_cg_clip (f);
#else
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  SetPortWindowPort (FRAME_MAC_WINDOW (f));
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  RGBBackColor (GC_BACK_COLOR (FRAME_NORMAL_GC (f)));
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#if TARGET_API_MAC_CARBON
  {
    Rect r;
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    GetWindowPortBounds (FRAME_MAC_WINDOW (f), &r);
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    EraseRect (&r);
  }
#else /* not TARGET_API_MAC_CARBON */
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  EraseRect (&(FRAME_MAC_WINDOW (f)->portRect));
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#endif /* not TARGET_API_MAC_CARBON */
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#endif
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}


/* Mac replacement for XCopyArea.  */

static void
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mac_draw_bitmap (f, gc, x, y, width, height, bits, overlay_p)
     struct frame *f;
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     GC gc;
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     int x, y, width, height;
     unsigned short *bits;
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     int overlay_p;
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{
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  BitMap bitmap;
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  Rect r;

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  bitmap.rowBytes = sizeof(unsigned short);
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  bitmap.baseAddr = (char *)bits;
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  SetRect (&(bitmap.bounds), 0, 0, width, height);

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#if USE_CG_DRAWING
  mac_prepare_for_quickdraw (f);
#endif
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  SetPortWindowPort (FRAME_MAC_WINDOW (f));
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  RGBForeColor (GC_FORE_COLOR (gc));
  RGBBackColor (GC_BACK_COLOR (gc));
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  SetRect (&r, x, y, x + width, y + height);
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  mac_begin_clip (gc);
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#if TARGET_API_MAC_CARBON
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  {
    CGrafPtr port;

    GetPort (&port);
    LockPortBits (port);
    CopyBits (&bitmap, GetPortBitMapForCopyBits (port),
	      &(bitmap.bounds), &r, overlay_p ? srcOr : srcCopy, 0);
    UnlockPortBits (port);
  }
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#else /* not TARGET_API_MAC_CARBON */
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  CopyBits (&bitmap, &(FRAME_MAC_WINDOW (f)->portBits), &(bitmap.bounds), &r,
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	    overlay_p ? srcOr : srcCopy, 0);
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#endif /* not TARGET_API_MAC_CARBON */
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  mac_end_clip (gc);
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  RGBBackColor (GC_BACK_COLOR (FRAME_NORMAL_GC (f)));
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}


/* Mac replacement for XCreateBitmapFromBitmapData.  */

static void
mac_create_bitmap_from_bitmap_data (bitmap, bits, w, h)
     BitMap *bitmap;
     char *bits;
     int w, h;
{
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  static unsigned char swap_nibble[16]
    = { 0x0, 0x8, 0x4, 0xc,    /* 0000 1000 0100 1100 */
	0x2, 0xa, 0x6, 0xe,    /* 0010 1010 0110 1110 */
	0x1, 0x9, 0x5, 0xd,    /* 0001 1001 0101 1101 */
	0x3, 0xb, 0x7, 0xf };  /* 0011 1011 0111 1111 */
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  int i, j, w1;
  char *p;
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  w1 = (w + 7) / 8;         /* nb of 8bits elt in X bitmap */
  bitmap->rowBytes = ((w + 15) / 16) * 2; /* nb of 16bits elt in Mac bitmap */
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  bitmap->baseAddr = xmalloc (bitmap->rowBytes * h);
  bzero (bitmap->baseAddr, bitmap->rowBytes * h);
  for (i = 0; i < h; i++)
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    {
      p = bitmap->baseAddr + i * bitmap->rowBytes;
      for (j = 0; j < w1; j++)
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	{
	  /* Bitswap XBM bytes to match how Mac does things.  */
	  unsigned char c = *bits++;
	  *p++ = (unsigned char)((swap_nibble[c & 0xf] << 4)
				 | (swap_nibble[(c>>4) & 0xf]));;
	}
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    }
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  SetRect (&(bitmap->bounds), 0, 0, w, h);
}


static void
mac_free_bitmap (bitmap)
     BitMap *bitmap;
{
  xfree (bitmap->baseAddr);
}

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Pixmap
XCreatePixmap (display, w, width, height, depth)
     Display *display;		/* not used */
     WindowPtr w;
     unsigned int width, height;
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     unsigned int depth;
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{
  Pixmap pixmap;
  Rect r;
  QDErr err;

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  SetPortWindowPort (w);
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  SetRect (&r, 0, 0, width, height);
  err = NewGWorld (&pixmap, depth, &r, NULL, NULL, 0);
  if (err != noErr)
    return NULL;
  return pixmap;
}


Pixmap
XCreatePixmapFromBitmapData (display, w, data, width, height, fg, bg, depth)
     Display *display;		/* not used */
     WindowPtr w;
     char *data;
     unsigned int width, height;
     unsigned long fg, bg;
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     unsigned int depth;
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{
  Pixmap pixmap;
  BitMap bitmap;
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  CGrafPtr old_port;
  GDHandle old_gdh;
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  static GC gc = NULL;		/* not reentrant */

  if (gc == NULL)
    gc = XCreateGC (display, w, 0, NULL);
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  pixmap = XCreatePixmap (display, w, width, height, depth);
  if (pixmap == NULL)
    return NULL;

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  GetGWorld (&old_port, &old_gdh);
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  SetGWorld (pixmap, NULL);
  mac_create_bitmap_from_bitmap_data (&bitmap, data, width, height);
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  XSetForeground (display, gc, fg);
  XSetBackground (display, gc, bg);
  RGBForeColor (GC_FORE_COLOR (gc));
  RGBBackColor (GC_BACK_COLOR (gc));
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  LockPixels (GetGWorldPixMap (pixmap));
#if TARGET_API_MAC_CARBON
  CopyBits (&bitmap, GetPortBitMapForCopyBits (pixmap),
	    &bitmap.bounds, &bitmap.bounds, srcCopy, 0);
#else /* not TARGET_API_MAC_CARBON */
  CopyBits (&bitmap, &(((GrafPtr)pixmap)->portBits),
	    &bitmap.bounds, &bitmap.bounds, srcCopy, 0);
#endif /* not TARGET_API_MAC_CARBON */
  UnlockPixels (GetGWorldPixMap (pixmap));
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  SetGWorld (old_port, old_gdh);
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  mac_free_bitmap (&bitmap);

  return pixmap;
}


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/* Mac replacement for XFillRectangle.  */

static void
670 671
mac_fill_rectangle (f, gc, x, y, width, height)
     struct frame *f;
672 673 674 675
     GC gc;
     int x, y;
     unsigned int width, height;
{
676 677 678 679 680 681 682 683
#if USE_CG_DRAWING
  CGContextRef context;

  context = mac_begin_cg_clip (f, gc);
  CG_SET_FILL_COLOR (context, gc->xgcv.foreground);
  CGContextFillRect (context, CGRectMake (x, y, width, height));
  mac_end_cg_clip (f);
#else
684 685
  Rect r;

686
  SetPortWindowPort (FRAME_MAC_WINDOW (f));
687

688
  RGBForeColor (GC_FORE_COLOR (gc));
689 690
  SetRect (&r, x, y, x + width, y + height);

691
  mac_begin_clip (gc);
692
  PaintRect (&r); /* using foreground color of gc */
693
  mac_end_clip (gc);
694
#endif
695 696 697 698 699 700
}


/* Mac replacement for XDrawRectangle: dest is a window.  */

static void
701 702
mac_draw_rectangle (f, gc, x, y, width, height)
     struct frame *f;
703 704 705 706
     GC gc;
     int x, y;
     unsigned int width, height;
{
707 708 709 710 711 712 713 714 715
#if USE_CG_DRAWING
  CGContextRef context;

  context = mac_begin_cg_clip (f, gc);
  CG_SET_STROKE_COLOR (context, gc->xgcv.foreground);
  CGContextStrokeRect (context,
		       CGRectMake (x + 0.5f, y + 0.5f, width, height));
  mac_end_cg_clip (f);
#else
716 717
  Rect r;

718
  SetPortWindowPort (FRAME_MAC_WINDOW (f));
719

720
  RGBForeColor (GC_FORE_COLOR (gc));
721
  SetRect (&r, x, y, x + width + 1, y + height + 1);
722

723
  mac_begin_clip (gc);
724
  FrameRect (&r); /* using foreground color of gc */
725
  mac_end_clip (gc);
726
#endif
727 728 729
}


730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747
#if USE_ATSUI
static OSStatus
atsu_get_text_layout_with_text_ptr (text, text_length, style, text_layout)
     ConstUniCharArrayPtr text;
     UniCharCount text_length;
     ATSUStyle style;
     ATSUTextLayout *text_layout;
{
  OSStatus err;
  static ATSUTextLayout saved_text_layout = NULL; /* not reentrant */

  if (saved_text_layout == NULL)
    {
      UniCharCount lengths[] = {kATSUToTextEnd};
      ATSUAttributeTag tags[] = {kATSULineLayoutOptionsTag};
      ByteCount sizes[] = {sizeof (ATSLineLayoutOptions)};
      static ATSLineLayoutOptions line_layout =
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1020
748
	kATSLineDisableAllLayoutOperations | kATSLineUseDeviceMetrics
749
	| kATSLineUseQDRendering
750
#else
751
	kATSLineIsDisplayOnly | kATSLineFractDisable
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#endif
	;
      ATSUAttributeValuePtr values[] = {&line_layout};

      err = ATSUCreateTextLayoutWithTextPtr (text,
					     kATSUFromTextBeginning,
					     kATSUToTextEnd,
					     text_length,
					     1, lengths, &style,
					     &saved_text_layout);
      if (err == noErr)
	err = ATSUSetLayoutControls (saved_text_layout,
				     sizeof (tags) / sizeof (tags[0]),
				     tags, sizes, values);
      /* XXX: Should we do this? */
      if (err == noErr)
	err = ATSUSetTransientFontMatching (saved_text_layout, true);
    }
  else
    {
      err = ATSUSetRunStyle (saved_text_layout, style,
			     kATSUFromTextBeginning, kATSUToTextEnd);
      if (err == noErr)
	err = ATSUSetTextPointerLocation (saved_text_layout, text,
					  kATSUFromTextBeginning,
					  kATSUToTextEnd,
					  text_length);
    }

  if (err == noErr)
    *text_layout = saved_text_layout;
  return err;
}
#endif

787

788
static void
789 790
mac_invert_rectangle (f, x, y, width, height)
     struct frame *f;
791 792 793 794 795
     int x, y;
     unsigned int width, height;
{
  Rect r;

796 797 798
#if USE_CG_DRAWING
  mac_prepare_for_quickdraw (f);
#endif
799
  SetPortWindowPort (FRAME_MAC_WINDOW (f));
800 801 802 803 804 805 806

  SetRect (&r, x, y, x + width, y + height);

  InvertRect (&r);
}


807
static void
808
mac_draw_string_common (f, gc, x, y, buf, nchars, bg_width, bytes_per_char)
809
     struct frame *f;
810 811 812
     GC gc;
     int x, y;
     char *buf;
813
     int nchars, bg_width, bytes_per_char;
814
{
815
  SetPortWindowPort (FRAME_MAC_WINDOW (f));
816

817 818 819 820 821 822 823 824 825 826 827
#if USE_ATSUI
  if (GC_FONT (gc)->mac_style)
    {
      OSErr err;
      ATSUTextLayout text_layout;

      xassert (bytes_per_char == 2);

#ifndef WORDS_BIG_ENDIAN
      {
	int i;
828
	UniChar *text = (UniChar *)buf;
829 830

	for (i = 0; i < nchars; i++)
831
	  text[i] = EndianU16_BtoN (text[i]);
832 833 834 835 836 837
      }
#endif
      err = atsu_get_text_layout_with_text_ptr ((ConstUniCharArrayPtr)buf,
						nchars,
						GC_FONT (gc)->mac_style,
						&text_layout);
838 839
      if (err != noErr)
	return;
840
#ifdef MAC_OSX
841 842
      if (!mac_use_core_graphics)
	{
843 844 845
#endif
#if USE_CG_DRAWING
	  mac_prepare_for_quickdraw (f);
846
#endif
847
	  mac_begin_clip (gc);
848 849 850 851 852 853 854 855 856 857
	  RGBForeColor (GC_FORE_COLOR (gc));
	  if (bg_width)
	    {
	      Rect r;

	      SetRect (&r, x, y - FONT_BASE (GC_FONT (gc)),
		       x + bg_width, y + FONT_DESCENT (GC_FONT (gc)));
	      RGBBackColor (GC_BACK_COLOR (gc));
	      EraseRect (&r);
	      RGBBackColor (GC_BACK_COLOR (FRAME_NORMAL_GC (f)));
858
	    }
859 860 861 862
	  MoveTo (x, y);
	  ATSUDrawText (text_layout,
			kATSUFromTextBeginning, kATSUToTextEnd,
			kATSUUseGrafPortPenLoc, kATSUUseGrafPortPenLoc);
863
	  mac_end_clip (gc);
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#ifdef MAC_OSX
	}
      else
	{
	  CGrafPtr port;
	  CGContextRef context;
	  float port_height = FRAME_PIXEL_HEIGHT (f);
	  ATSUAttributeTag tags[] = {kATSUCGContextTag};
	  ByteCount sizes[] = {sizeof (CGContextRef)};
	  ATSUAttributeValuePtr values[] = {&context};

875 876 877
#if USE_CG_DRAWING
	  context = mac_begin_cg_clip (f, gc);
#else
878 879 880
	  GetPort (&port);
	  QDBeginCGContext (port, &context);
	  if (gc->n_clip_rects || bg_width)
881
	    {
882 883
	      CGContextTranslateCTM (context, 0, port_height);
	      CGContextScaleCTM (context, 1, -1);
884
	      if (gc->n_clip_rects)
885 886
		CGContextClipToRects (context, gc->clip_rects,
				      gc->n_clip_rects);
887
#endif
888
	      if (bg_width)
889
		{
890
		  CG_SET_FILL_COLOR (context, gc->xgcv.background);
891 892 893 894
		  CGContextFillRect
		    (context,
		     CGRectMake (x, y - FONT_BASE (GC_FONT (gc)),
				 bg_width, FONT_HEIGHT (GC_FONT (gc))));
895
		}
896 897
	      CGContextScaleCTM (context, 1, -1);
	      CGContextTranslateCTM (context, 0, -port_height);
898
#if !USE_CG_DRAWING
899
	    }
900 901
#endif
	  CG_SET_FILL_COLOR (context, gc->xgcv.foreground);
902
	  err = ATSUSetLayoutControls (text_layout,
903
				       sizeof (tags) / sizeof (tags[0]),
904 905 906 907 908
				       tags, sizes, values);
	  if (err == noErr)
	    ATSUDrawText (text_layout,
			  kATSUFromTextBeginning, kATSUToTextEnd,
			  Long2Fix (x), Long2Fix (port_height - y));
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#if USE_CG_DRAWING
	  mac_end_cg_clip (f);
	  context = NULL;
#else
913 914
	  CGContextSynchronize (context);
	  QDEndCGContext (port, &context);
915
#endif
916 917 918 919
#if 0
	  /* This doesn't work on Mac OS X 10.1.  */
	  ATSUClearLayoutControls (text_layout,
				   sizeof (tags) / sizeof (tags[0]), tags);
920
#else
921 922 923
	  ATSUSetLayoutControls (text_layout,
				 sizeof (tags) / sizeof (tags[0]),
				 tags, sizes, values);
924 925
#endif
	}
926
#endif	/* MAC_OSX */
927 928
    }
  else
929
#endif	/* USE_ATSUI */
930
    {
931 932 933 934 935
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1020
      UInt32 savedFlags;

      if (mac_use_core_graphics)
	savedFlags = SwapQDTextFlags (kQDUseCGTextRendering);
936 937 938
#endif
#if USE_CG_DRAWING
      mac_prepare_for_quickdraw (f);
939
#endif
940
      mac_begin_clip (gc);
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      RGBForeColor (GC_FORE_COLOR (gc));
#ifdef MAC_OS8
      if (bg_width)
	{
	  RGBBackColor (GC_BACK_COLOR (gc));
	  TextMode (srcCopy);
	}
      else
	TextMode (srcOr);
#else
      /* We prefer not to use srcCopy text transfer mode on Mac OS X
	 because:
	 - Screen is double-buffered.  (In srcCopy mode, a text is
	   drawn into an offscreen graphics world first.  So
	   performance gain cannot be expected.)
	 - It lowers rendering quality.
	 - Some fonts leave garbage on cursor movement.  */
      if (bg_width)
	{
	  Rect r;
961

962 963 964 965 966 967
	  RGBBackColor (GC_BACK_COLOR (gc));
	  SetRect (&r, x, y - FONT_BASE (GC_FONT (gc)),
		   x + bg_width, y + FONT_DESCENT (GC_FONT (gc)));
	  EraseRect (&r);
	}
      TextMode (srcOr);
968
#endif
969 970 971 972 973 974 975
      TextFont (GC_FONT (gc)->mac_fontnum);
      TextSize (GC_FONT (gc)->mac_fontsize);
      TextFace (GC_FONT (gc)->mac_fontface);
      MoveTo (x, y);
      DrawText (buf, 0, nchars * bytes_per_char);
      if (bg_width)
	RGBBackColor (GC_BACK_COLOR (FRAME_NORMAL_GC (f)));
976
      mac_end_clip (gc);
977

978
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1020
979 980
      if (mac_use_core_graphics)
	SwapQDTextFlags(savedFlags);
981
#endif
982
    }
983 984 985 986 987 988
}


/* Mac replacement for XDrawString.  */

static void
989 990
mac_draw_string (f, gc, x, y, buf, nchars)
     struct frame *f;
991 992 993 994 995
     GC gc;
     int x, y;
     char *buf;
     int nchars;
{
996
  mac_draw_string_common (f, gc, x, y, buf, nchars, 0, 1);
997 998 999 1000 1001 1002
}


/* Mac replacement for XDrawString16. */

static void
1003 1004
mac_draw_string_16 (f, gc, x, y, buf, nchars)
     struct frame *f;
1005 1006 1007 1008 1009
     GC gc;
     int x, y;
     XChar2b *buf;
     int nchars;
{
1010
  mac_draw_string_common (f, gc, x, y, (char *) buf, nchars, 0, 2);
1011 1012 1013 1014 1015 1016
}


/* Mac replacement for XDrawImageString.  */

static void
1017
mac_draw_image_string (f, gc, x, y, buf, nchars, bg_width)
1018
     struct frame *f;
1019 1020 1021
     GC gc;
     int x, y;
     char *buf;
1022
     int nchars, bg_width;
1023
{
1024
  mac_draw_string_common (f, gc, x, y, buf, nchars, bg_width, 1);
1025 1026 1027 1028 1029 1030
}


/* Mac replacement for XDrawString16.  */

static void
1031
mac_draw_image_string_16 (f, gc, x, y, buf, nchars, bg_width)
1032
     struct frame *f;
1033 1034 1035
     GC gc;
     int x, y;
     XChar2b *buf;
1036
     int nchars, bg_width;
1037
{
1038
  mac_draw_string_common (f, gc, x, y, (char *) buf, nchars, bg_width, 2);
1039 1040 1041
}


1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058
/* Mac replacement for XQueryTextExtents, but takes a character.  If
   STYLE is NULL, measurement is done by QuickDraw Text routines for
   the font of the current graphics port.  If CG_GLYPH is not NULL,
   *CG_GLYPH is set to the glyph ID or 0 if it cannot be obtained.  */

static OSErr
mac_query_char_extents (style, c,
			font_ascent_return, font_descent_return,
			overall_return, cg_glyph)
#if USE_ATSUI
     ATSUStyle style;
#else
     void *style;
#endif
     int c;
     int *font_ascent_return, *font_descent_return;
     XCharStruct *overall_return;
1059
#if USE_CG_TEXT_DRAWING
1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078
     CGGlyph *cg_glyph;
#else
     void *cg_glyph;
#endif
{
  OSErr err = noErr;
  int width;
  Rect char_bounds;

#if USE_ATSUI
  if (style)
    {
      ATSUTextLayout text_layout;
      UniChar ch = c;

      err = atsu_get_text_layout_with_text_ptr (&ch, 1, style, &text_layout);
      if (err == noErr)
	{
	  ATSTrapezoid glyph_bounds;
1079

1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194
	  err = ATSUGetGlyphBounds (text_layout, 0, 0,
				    kATSUFromTextBeginning, kATSUToTextEnd,
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1020
				    kATSUseFractionalOrigins,
#else
				    kATSUseDeviceOrigins,
#endif
				    1, &glyph_bounds, NULL);
	  if (err == noErr)
	    {
	      xassert (glyph_bounds.lowerRight.x - glyph_bounds.lowerLeft.x
		       == glyph_bounds.upperRight.x - glyph_bounds.upperLeft.x);

	      width = Fix2Long (glyph_bounds.upperRight.x
				- glyph_bounds.upperLeft.x);
	      if (font_ascent_return)
		*font_ascent_return = -Fix2Long (glyph_bounds.upperLeft.y);
	      if (font_descent_return)
		*font_descent_return = Fix2Long (glyph_bounds.lowerLeft.y);
	    }
	}
      if (err == noErr && overall_return)
	{
	  err = ATSUMeasureTextImage (text_layout,
				      kATSUFromTextBeginning, kATSUToTextEnd,
				      0, 0, &char_bounds);
	  if (err == noErr)
	    STORE_XCHARSTRUCT (*overall_return, width, char_bounds);
#if USE_CG_TEXT_DRAWING
	  if (err == noErr && cg_glyph)
	    {
	      OSErr err1;
	      ATSUGlyphInfoArray glyph_info_array;
	      ByteCount count = sizeof (ATSUGlyphInfoArray);

	      err1 = ATSUMatchFontsToText (text_layout, kATSUFromTextBeginning,
					   kATSUToTextEnd, NULL, NULL, NULL);
	      if (err1 == noErr)
		err1 = ATSUGetGlyphInfo (text_layout, kATSUFromTextBeginning,
					 kATSUToTextEnd, &count,
					 &glyph_info_array);
	      if (err1 == noErr)
		{
		  xassert (glyph_info_array.glyphs[0].glyphID);
		  *cg_glyph = glyph_info_array.glyphs[0].glyphID;
		}
	      else
		*cg_glyph = 0;
	    }
#endif
	}
    }
  else
#endif
    {
      if (font_ascent_return || font_descent_return)
	{
	  FontInfo font_info;

	  GetFontInfo (&font_info);
	  if (font_ascent_return)
	    *font_ascent_return = font_info.ascent;
	  if (font_descent_return)
	    *font_descent_return = font_info.descent;
	}
      if (overall_return)
	{
	  char ch = c;

	  width = CharWidth (ch);
	  QDTextBounds (1, &ch, &char_bounds);
	  STORE_XCHARSTRUCT (*overall_return, width, char_bounds);
	}
    }

  return err;
}


/* Mac replacement for XTextExtents16.  Only sets horizontal metrics.  */

static int
mac_text_extents_16 (font_struct, string, nchars, overall_return)
     XFontStruct *font_struct;
     XChar2b *string;
     int nchars;
     XCharStruct *overall_return;
{
  int i;
  short width = 0, lbearing = 0, rbearing = 0;
  XCharStruct *pcm;

  for (i = 0; i < nchars; i++)
    {
      pcm = mac_per_char_metric (font_struct, string, 0);
      if (pcm == NULL)
	width += FONT_WIDTH (font_struct);
      else
	{
	  lbearing = min (lbearing, width + pcm->lbearing);
	  rbearing = max (rbearing, width + pcm->rbearing);
	  width += pcm->width;
	}
      string++;
    }

  overall_return->lbearing = lbearing;
  overall_return->rbearing = rbearing;
  overall_return->width = width;

  /* What's the meaning of the return value of XTextExtents16?  */
}


#if USE_CG_TEXT_DRAWING
1195 1196 1197 1198 1199
static int cg_text_anti_aliasing_threshold = 8;

static void
init_cg_text_anti_aliasing_threshold ()
{
1200 1201
  int threshold;
  Boolean valid_p;
1202

1203 1204 1205 1206 1207 1208
  threshold =
    CFPreferencesGetAppIntegerValue (CFSTR ("AppleAntiAliasingThreshold"),
				     kCFPreferencesCurrentApplication,
				     &valid_p);
  if (valid_p)
    cg_text_anti_aliasing_threshold = threshold;
1209 1210
}

1211
static int
1212
mac_draw_image_string_cg (f, gc, x, y, buf, nchars, bg_width)
1213 1214 1215 1216
     struct frame *f;
     GC gc;
     int x, y;
     XChar2b *buf;
1217
     int nchars, bg_width;
1218 1219 1220 1221 1222 1223 1224 1225
{
  CGrafPtr port;
  float port_height, gx, gy;
  int i;
  CGContextRef context;
  CGGlyph *glyphs;
  CGSize *advances;

1226
  if (!mac_use_core_graphics || GC_FONT (gc)->cg_font == NULL)
1227 1228 1229 1230 1231 1232 1233
    return 0;

  port = GetWindowPort (FRAME_MAC_WINDOW (f));
  port_height = FRAME_PIXEL_HEIGHT (f);
  gx = x;
  gy = port_height - y;
  glyphs = (CGGlyph *)buf;
1234 1235 1236
  advances = alloca (sizeof (CGSize) * nchars);
  if (advances == NULL)
    return 0;
1237 1238
  for (i = 0; i < nchars; i++)
    {
1239 1240 1241
      XCharStruct *pcm = mac_per_char_metric (GC_FONT (gc), buf, 0);

      advances[i].width = pcm->width;
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