Implement mouse highlight for bidi-reordered lines.

 xdisp.c (fast_find_string_pos): #ifdef away, not used anymore.
 (mouse_face_from_string_pos): New function, replaces
 fast_find_string_pos.
 (note_mouse_highlight): Call it instead of fast_find_string_pos.
 (note_mode_line_or_margin_highlight): Support bidi-reordered
 strings and R2L glyph rows.  Fix comments.
 (note_mouse_highlight): When bidi reordering is turned on in a
 buffer, call next-single-property-change and
 previous-single-property-change with last argument nil.  Clear
 mouse highlight when mouse pointer is in a R2L row on the stretch
 glyph that stands for no text beyond the line end.
 (row_containing_pos): Don't return too early when CHARPOS is in a
 bidi-reordered continued line.  Return immediately when the first
 hit is found in a line that is not continued, or when an exact
 match for CHARPOS is found.
 (rows_from_pos_range): New function.
 (mouse_face_from_buffer_pos): Use it instead of calling
 row_containing_pos for START_CHARPOS and END_CHARPOS.  Rewrite the
 function to support mouse highlight in bidi-reordered lines and
 not to assume that START_CHARPOS is always in mouse_face_beg_row.
 If necessary, swap mouse_face_beg_row and mouse_face_end_row so
 that the former is always above the latter or identical to it.
 (show_mouse_face): Support drawing highlighted R2L lines.
 (coords_in_mouse_face_p): New function, bidi-aware.
 (cursor_in_mouse_face_p, note_mouse_highlight, erase_phys_cursor):
 Call it instead of comparing with mouse-face members of dpyinfo.
 (note_mode_line_or_margin_highlight): Fix confusingly swapped
 usage of hpos and vpos.

1 files changed, 34 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 05a0d442149..e4cd83a6236 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,36 @@
+2010-10-23  Eli Zaretskii  <eliz@gnu.org>
+
+        Implement mouse highlight for bidi-reordered lines.
+
+        * xdisp.c (fast_find_string_pos): #ifdef away, not used anymore.
+        (mouse_face_from_string_pos): New function, replaces
+        fast_find_string_pos.
+        (note_mouse_highlight): Call it instead of fast_find_string_pos.
+        (note_mode_line_or_margin_highlight): Support bidi-reordered
+        strings and R2L glyph rows.  Fix comments.
+        (note_mouse_highlight): When bidi reordering is turned on in a
+        buffer, call next-single-property-change and
+        previous-single-property-change with last argument nil.  Clear
+        mouse highlight when mouse pointer is in a R2L row on the stretch
+        glyph that stands for no text beyond the line end.
+        (row_containing_pos): Don't return too early when CHARPOS is in a
+        bidi-reordered continued line.  Return immediately when the first
+        hit is found in a line that is not continued, or when an exact
+        match for CHARPOS is found.
+        (rows_from_pos_range): New function.
+        (mouse_face_from_buffer_pos): Use it instead of calling
+        row_containing_pos for START_CHARPOS and END_CHARPOS.  Rewrite the
+        function to support mouse highlight in bidi-reordered lines and
+        not to assume that START_CHARPOS is always in mouse_face_beg_row.
+        If necessary, swap mouse_face_beg_row and mouse_face_end_row so
+        that the former is always above the latter or identical to it.
+        (show_mouse_face): Support drawing highlighted R2L lines.
+        (coords_in_mouse_face_p): New function, bidi-aware.
+        (cursor_in_mouse_face_p, note_mouse_highlight, erase_phys_cursor):
+        Call it instead of comparing with mouse-face members of dpyinfo.
+        (note_mode_line_or_margin_highlight): Fix confusingly swapped
+        usage of hpos and vpos.
+
 2010-10-22  Jan Djärv  <jan.h.d@swipnet.se>
 
         * xrdb.c: Include keyboard.h for MOTIF.
@@ -1528,7 +1561,7 @@
         non-MSDOS, non-WINDOWSNT code, it's only defined for such systems
         anyway.
 
-2010-08-21  Eli Zaretskii  <eliz@gnu.org>
+2010-08-20  Eli Zaretskii  <eliz@gnu.org>
 
         * dispnew.c (buffer_posn_from_coords): Fix off-by-one error in
         mirroring pixel positions.