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[Emacs-diffs] Changes to emacs/src/macterm.c


From: YAMAMOTO Mitsuharu
Subject: [Emacs-diffs] Changes to emacs/src/macterm.c
Date: Tue, 21 Feb 2006 08:09:49 +0000

Index: emacs/src/macterm.c
diff -u emacs/src/macterm.c:1.153 emacs/src/macterm.c:1.154
--- emacs/src/macterm.c:1.153   Fri Feb 10 08:22:12 2006
+++ emacs/src/macterm.c Tue Feb 21 08:09:44 2006
@@ -283,7 +283,7 @@
   if (new_region == NULL)
     new_region = NewRgn ();
 
-  if (region)
+  if (region && !EmptyRgn (region))
     {
       GetClip (saved_port_clip_region);
       SectRgn (saved_port_clip_region, region, new_region);
@@ -295,7 +295,7 @@
 mac_end_clip (region)
      RgnHandle region;
 {
-  if (region)
+  if (region && !EmptyRgn (region))
     SetClip (saved_port_clip_region);
 }
 
@@ -682,27 +682,15 @@
 
 
 static void
-mac_draw_string_common (f, gc, x, y, buf, nchars, mode, bytes_per_char)
+mac_draw_string_common (f, gc, x, y, buf, nchars, bg_width, bytes_per_char)
      struct frame *f;
      GC gc;
      int x, y;
      char *buf;
-     int nchars, mode, bytes_per_char;
+     int nchars, bg_width, bytes_per_char;
 {
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1020
-  UInt32 textFlags, savedFlags;
-  if (mac_use_core_graphics) {
-    textFlags = kQDUseCGTextRendering;
-    savedFlags = SwapQDTextFlags(textFlags);
-  }
-#endif
-
   SetPortWindowPort (FRAME_MAC_WINDOW (f));
 
-  RGBForeColor (GC_FORE_COLOR (gc));
-  if (mode != srcOr)
-    RGBBackColor (GC_BACK_COLOR (gc));
-
 #if USE_ATSUI
   if (GC_FONT (gc)->mac_style)
     {
@@ -724,91 +712,144 @@
                                                nchars,
                                                GC_FONT (gc)->mac_style,
                                                &text_layout);
-      if (err == noErr)
-       {
+      if (err != noErr)
+       return;
 #ifdef MAC_OSX
-         if (!mac_use_core_graphics)
-           {
+      if (!mac_use_core_graphics)
+       {
 #endif
-             mac_begin_clip (GC_CLIP_REGION (gc));
-             MoveTo (x, y);
-             ATSUDrawText (text_layout,
-                           kATSUFromTextBeginning, kATSUToTextEnd,
-                           kATSUUseGrafPortPenLoc, kATSUUseGrafPortPenLoc);
-             mac_end_clip (GC_CLIP_REGION (gc));
-#ifdef MAC_OSX
-           }
-         else
+         mac_begin_clip (GC_CLIP_REGION (gc));
+         RGBForeColor (GC_FORE_COLOR (gc));
+         if (bg_width)
            {
-             CGrafPtr port;
-             CGContextRef context;
-             float port_height = FRAME_PIXEL_HEIGHT (f);
-             ATSUAttributeTag tags[] = {kATSUCGContextTag};
-             ByteCount sizes[] = {sizeof (CGContextRef)};
-             ATSUAttributeValuePtr values[] = {&context};
+             Rect r;
 
-             GetPort (&port);
-             QDBeginCGContext (port, &context);
+             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)));
+           }
+         MoveTo (x, y);
+         ATSUDrawText (text_layout,
+                       kATSUFromTextBeginning, kATSUToTextEnd,
+                       kATSUUseGrafPortPenLoc, kATSUUseGrafPortPenLoc);
+         mac_end_clip (GC_CLIP_REGION (gc));
+#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};
+
+         GetPort (&port);
+         QDBeginCGContext (port, &context);
+         if (gc->n_clip_rects || bg_width)
+           {
+             CGContextTranslateCTM (context, 0, port_height);
+             CGContextScaleCTM (context, 1, -1);
              if (gc->n_clip_rects)
+               CGContextClipToRects (context, gc->clip_rects,
+                                     gc->n_clip_rects);
+             if (bg_width)
                {
-                 CGContextTranslateCTM (context, 0, port_height);
-                 CGContextScaleCTM (context, 1, -1);
-                 CGContextClipToRects (context, gc->clip_rects,
-                                       gc->n_clip_rects);
-                 CGContextScaleCTM (context, 1, -1);
-                 CGContextTranslateCTM (context, 0, -port_height);
+                 CGContextSetRGBFillColor
+                   (context,
+                    RED_FROM_ULONG (gc->xgcv.background) / 255.0f,
+                    GREEN_FROM_ULONG (gc->xgcv.background) / 255.0f,
+                    BLUE_FROM_ULONG (gc->xgcv.background) / 255.0f,
+                    1.0);
+                 CGContextFillRect
+                   (context,
+                    CGRectMake (x, y - FONT_BASE (GC_FONT (gc)),
+                                bg_width, FONT_HEIGHT (GC_FONT (gc))));
                }
-             CGContextSetRGBFillColor
-               (context,
-                RED_FROM_ULONG (gc->xgcv.foreground) / 255.0,
-                GREEN_FROM_ULONG (gc->xgcv.foreground) / 255.0,
-                BLUE_FROM_ULONG (gc->xgcv.foreground) / 255.0,
-                1.0);
-             err = ATSUSetLayoutControls (text_layout,
-                                          sizeof (tags) / sizeof (tags[0]),
-                                          tags, sizes, values);
-             if (err == noErr)
-               ATSUDrawText (text_layout,
-                             kATSUFromTextBeginning, kATSUToTextEnd,
-                             Long2Fix (x), Long2Fix (port_height - y));
-             CGContextSynchronize (context);
-             QDEndCGContext (port, &context);
-#if 0
-             /* This doesn't work on Mac OS X 10.1.  */
-             ATSUClearLayoutControls (text_layout,
+             CGContextScaleCTM (context, 1, -1);
+             CGContextTranslateCTM (context, 0, -port_height);
+           }
+         CGContextSetRGBFillColor
+           (context,
+            RED_FROM_ULONG (gc->xgcv.foreground) / 255.0f,
+            GREEN_FROM_ULONG (gc->xgcv.foreground) / 255.0f,
+            BLUE_FROM_ULONG (gc->xgcv.foreground) / 255.0f,
+            1.0);
+         err = ATSUSetLayoutControls (text_layout,
                                       sizeof (tags) / sizeof (tags[0]),
-                                      tags);
+                                      tags, sizes, values);
+         if (err == noErr)
+           ATSUDrawText (text_layout,
+                         kATSUFromTextBeginning, kATSUToTextEnd,
+                         Long2Fix (x), Long2Fix (port_height - y));
+         CGContextSynchronize (context);
+         QDEndCGContext (port, &context);
+#if 0
+         /* This doesn't work on Mac OS X 10.1.  */
+         ATSUClearLayoutControls (text_layout,
+                                  sizeof (tags) / sizeof (tags[0]), tags);
 #else
-             ATSUSetLayoutControls (text_layout,
-                                    sizeof (tags) / sizeof (tags[0]),
-                                    tags, sizes, values);
-#endif
-           }
+         ATSUSetLayoutControls (text_layout,
+                                sizeof (tags) / sizeof (tags[0]),
+                                tags, sizes, values);
 #endif
        }
+#endif /* MAC_OSX */
     }
   else
+#endif /* USE_ATSUI */
     {
-#endif
-  TextFont (GC_FONT (gc)->mac_fontnum);
-  TextSize (GC_FONT (gc)->mac_fontsize);
-  TextFace (GC_FONT (gc)->mac_fontface);
-  TextMode (mode);
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1020
+      UInt32 savedFlags;
 
-  mac_begin_clip (GC_CLIP_REGION (gc));
-  MoveTo (x, y);
-  DrawText (buf, 0, nchars * bytes_per_char);
-  mac_end_clip (GC_CLIP_REGION (gc));
-#if USE_ATSUI
-    }
+      if (mac_use_core_graphics)
+       savedFlags = SwapQDTextFlags (kQDUseCGTextRendering);
 #endif
+      mac_begin_clip (GC_CLIP_REGION (gc));
+      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;
+
+         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);
+#endif
+      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)));
+      mac_end_clip (GC_CLIP_REGION (gc));
 
-  if (mode != srcOr)
-    RGBBackColor (GC_BACK_COLOR (FRAME_NORMAL_GC (f)));
 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1020
-  if (mac_use_core_graphics)
-    SwapQDTextFlags(savedFlags);
+      if (mac_use_core_graphics)
+       SwapQDTextFlags(savedFlags);
 #endif
+    }
 }
 
 
@@ -822,7 +863,7 @@
      char *buf;
      int nchars;
 {
-  mac_draw_string_common (f, gc, x, y, buf, nchars, srcOr, 1);
+  mac_draw_string_common (f, gc, x, y, buf, nchars, 0, 1);
 }
 
 
@@ -836,35 +877,35 @@
      XChar2b *buf;
      int nchars;
 {
-  mac_draw_string_common (f, gc, x, y, (char *) buf, nchars, srcOr, 2);
+  mac_draw_string_common (f, gc, x, y, (char *) buf, nchars, 0, 2);
 }
 
 
 /* Mac replacement for XDrawImageString.  */
 
 static void
-mac_draw_image_string (f, gc, x, y, buf, nchars)
+mac_draw_image_string (f, gc, x, y, buf, nchars, bg_width)
      struct frame *f;
      GC gc;
      int x, y;
      char *buf;
-     int nchars;
+     int nchars, bg_width;
 {
-  mac_draw_string_common (f, gc, x, y, buf, nchars, srcCopy, 1);
+  mac_draw_string_common (f, gc, x, y, buf, nchars, bg_width, 1);
 }
 
 
 /* Mac replacement for XDrawString16.  */
 
 static void
-mac_draw_image_string_16 (f, gc, x, y, buf, nchars)
+mac_draw_image_string_16 (f, gc, x, y, buf, nchars, bg_width)
      struct frame *f;
      GC gc;
      int x, y;
      XChar2b *buf;
-     int nchars;
+     int nchars, bg_width;
 {
-  mac_draw_string_common (f, gc, x, y, (char *) buf, nchars, srcCopy, 2);
+  mac_draw_string_common (f, gc, x, y, (char *) buf, nchars, bg_width, 2);
 }
 
 
@@ -1038,12 +1079,12 @@
 }
 
 static int
-mac_draw_string_cg (f, gc, x, y, buf, nchars)
+mac_draw_image_string_cg (f, gc, x, y, buf, nchars, bg_width)
      struct frame *f;
      GC gc;
      int x, y;
      XChar2b *buf;
-     int nchars;
+     int nchars, bg_width;
 {
   CGrafPtr port;
   float port_height, gx, gy;
@@ -1060,7 +1101,9 @@
   gx = x;
   gy = port_height - y;
   glyphs = (CGGlyph *)buf;
-  advances = xmalloc (sizeof (CGSize) * nchars);
+  advances = alloca (sizeof (CGSize) * nchars);
+  if (advances == NULL)
+    return 0;
   for (i = 0; i < nchars; i++)
     {
       XCharStruct *pcm = mac_per_char_metric (GC_FONT (gc), buf, 0);
@@ -1072,18 +1115,32 @@
     }
 
   QDBeginCGContext (port, &context);
-  if (gc->n_clip_rects)
+  if (gc->n_clip_rects || bg_width)
     {
       CGContextTranslateCTM (context, 0, port_height);
       CGContextScaleCTM (context, 1, -1);
-      CGContextClipToRects (context, gc->clip_rects, gc->n_clip_rects);
+      if (gc->n_clip_rects)
+       CGContextClipToRects (context, gc->clip_rects, gc->n_clip_rects);
+      if (bg_width)
+       {
+         CGContextSetRGBFillColor
+           (context,
+            RED_FROM_ULONG (gc->xgcv.background) / 255.0f,
+            GREEN_FROM_ULONG (gc->xgcv.background) / 255.0f,
+            BLUE_FROM_ULONG (gc->xgcv.background) / 255.0f,
+            1.0);
+         CGContextFillRect
+           (context,
+            CGRectMake (gx, y - FONT_BASE (GC_FONT (gc)),
+                        bg_width, FONT_HEIGHT (GC_FONT (gc))));
+       }
       CGContextScaleCTM (context, 1, -1);
       CGContextTranslateCTM (context, 0, -port_height);
     }
   CGContextSetRGBFillColor (context,
-                           RED_FROM_ULONG (gc->xgcv.foreground) / 255.0,
-                           GREEN_FROM_ULONG (gc->xgcv.foreground) / 255.0,
-                           BLUE_FROM_ULONG (gc->xgcv.foreground) / 255.0,
+                           RED_FROM_ULONG (gc->xgcv.foreground) / 255.0f,
+                           GREEN_FROM_ULONG (gc->xgcv.foreground) / 255.0f,
+                           BLUE_FROM_ULONG (gc->xgcv.foreground) / 255.0f,
                            1.0);
   CGContextSetFont (context, GC_FONT (gc)->cg_font);
   CGContextSetFontSize (context, GC_FONT (gc)->mac_fontsize);
@@ -1102,8 +1159,6 @@
   CGContextSynchronize (context);
   QDEndCGContext (port, &context);
 
-  xfree (advances);
-
   return 1;
 }
 #endif
@@ -1375,10 +1430,7 @@
   if (n == 0)
     {
       if (gc->clip_region)
-       {
-         DisposeRgn (gc->clip_region);
-         gc->clip_region = NULL;
-       }
+       SetEmptyRgn (gc->clip_region);
     }
   else
     {
@@ -2322,14 +2374,6 @@
 }
 
 
-/* We prefer not to use XDrawImageString (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.  */
-
 /* Draw the background of glyph_string S.  If S->background_filled_p
    is non-zero don't draw it.  FORCE_P non-zero means draw the
    background even if it wouldn't be drawn normally.  This is used
@@ -2361,12 +2405,10 @@
        }
       else
 #endif
-#if defined (MAC_OS8) && !USE_ATSUI
         if (FONT_HEIGHT (s->font) < s->height - 2 * box_line_width
               || s->font_not_found_p
               || s->extends_to_end_of_line_p
               || force_p)
-#endif
        {
          x_clear_glyph_string_rect (s, s->x, s->y + box_line_width,
                                     s->background_width,
@@ -2383,7 +2425,7 @@
 x_draw_glyph_string_foreground (s)
      struct glyph_string *s;
 {
-  int i, x;
+  int i, x, bg_width;
 
   /* If first glyph of S has a left box line, start drawing the text
      of S to the right of that box line.  */
@@ -2422,7 +2464,6 @@
        for (i = 0; i < s->nchars; ++i)
          char1b[i] = s->char2b[i].byte2;
 
-#if defined (MAC_OS8) && !USE_ATSUI
       /* Draw text with XDrawString if background has already been
         filled.  Otherwise, use XDrawImageString.  (Note that
         XDrawImageString is usually faster than XDrawString.)  Always
@@ -2430,38 +2471,27 @@
         no chance that characters under a box cursor are invisible.  */
       if (s->for_overlaps
          || (s->background_filled_p && s->hl != DRAW_CURSOR))
-#endif
-       {
-         /* Draw characters with 16-bit or 8-bit functions.  */
-         if (s->two_byte_p
+       bg_width = 0;           /* Corresponds to XDrawString.  */
+      else
+       bg_width = s->background_width; /* Corresponds to XDrawImageString.  */
+
+      if (s->two_byte_p
 #if USE_ATSUI
-             || GC_FONT (s->gc)->mac_style
+         || GC_FONT (s->gc)->mac_style
 #endif
-             )
+         )
 #if USE_CG_TEXT_DRAWING
-           if (!s->two_byte_p
-               && mac_draw_string_cg (s->f, s->gc, x, s->ybase - boff,
-                                      s->char2b, s->nchars))
-             ;
-           else
+       if (!s->two_byte_p
+           && mac_draw_image_string_cg (s->f, s->gc, x, s->ybase - boff,
+                                        s->char2b, s->nchars, bg_width))
+         ;
+       else
 #endif
-           mac_draw_string_16 (s->f, s->gc, x, s->ybase - boff,
-                               s->char2b, s->nchars);
-         else
-           mac_draw_string (s->f, s->gc, x, s->ybase - boff,
-                            char1b, s->nchars);
-       }
-#if defined (MAC_OS8) && !USE_ATSUI
+         mac_draw_image_string_16 (s->f, s->gc, x, s->ybase - boff,
+                                   s->char2b, s->nchars, bg_width);
       else
-       {
-         if (s->two_byte_p)
-           mac_draw_image_string_16 (s->f, s->gc, x, s->ybase - boff,
-                                     s->char2b, s->nchars);
-         else
-           mac_draw_image_string (s->f, s->gc, x, s->ybase - boff,
-                                  char1b, s->nchars);
-       }
-#endif
+       mac_draw_image_string (s->f, s->gc, x, s->ybase - boff,
+                              char1b, s->nchars, bg_width);
     }
 }
 
@@ -7837,9 +7867,13 @@
 #if !defined (MAC_OS8) || USE_ATSUI
   /* AppKit and WebKit do some adjustment to the heights of Courier,
      Helvetica, and Times.  This only works on the environments where
-     the XDrawImageString counterpart is never used.  */
-  if (strcmp (family, "courier") == 0 || strcmp (family, "helvetica") == 0
-      || strcmp (family, "times") == 0)
+     srcCopy text transfer mode is never used.  */
+  if (
+#ifdef MAC_OS8                 /* implies USE_ATSUI */
+      font->mac_style &&
+#endif
+      (strcmp (family, "courier") == 0 || strcmp (family, "helvetica") == 0
+       || strcmp (family, "times") == 0))
     font->ascent += (font->ascent + font->descent) * .15 + 0.5;
 #endif
 




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