(x_set_window_size): If cursor outside new size, mark it off.

(note_mouse_highlight): Handle case of highlight extending
past end of window.
(fast_find_position): Fix bugs when no text on screen
and when the mouse is on an empty line.

diff --git a/src/xterm.c b/src/xterm.c
index dd8c0cf5446ef07a5eb57b8fc7ba72259e2023bc..528b250b32ca052badf46fdbf5ef3fa56b70c408 100644 (file)
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -284,6 +284,7 @@ static Time last_mouse_movement_time;
    redraw anything on its account.  */
 static int mouse_face_beg_row, mouse_face_beg_col;
 static int mouse_face_end_row, mouse_face_end_col;
+static int mouse_face_past_end;
 static Lisp_Object mouse_face_window;
 static int mouse_face_face_id;
 
@@ -2184,7 +2185,8 @@ note_mouse_highlight (f, x, y)
                  && row >= mouse_face_beg_row
                  && row <= mouse_face_end_row
                  && (row > mouse_face_beg_row || column >= mouse_face_beg_col)
-                 && (row < mouse_face_end_row || column < mouse_face_end_col)))
+                 && (row < mouse_face_end_row || column < mouse_face_end_col
+                     || mouse_face_past_end)))
        {
          Lisp_Object mouse_face, overlay, position;
          Lisp_Object *overlay_vec;
@@ -2246,10 +2248,11 @@ note_mouse_highlight (f, x, y)
              before = Foverlay_start (overlay);
              after = Foverlay_end (overlay);
              /* Record this as the current active region.  */
-             fast_find_position (window, before,
-                                 &mouse_face_beg_col, &mouse_face_beg_row);
-             fast_find_position (window, after,
-                                 &mouse_face_end_col, &mouse_face_end_row);
+             fast_find_position (window, before, &mouse_face_beg_col,
+                                 &mouse_face_beg_row);
+             mouse_face_past_end
+               = !fast_find_position (window, after, &mouse_face_end_col,
+                                      &mouse_face_end_row);
              mouse_face_window = window;
              mouse_face_face_id = compute_char_face (f, w, pos, 0, 0,
                                                      &ignore, pos + 1, 1);
@@ -2277,10 +2280,11 @@ note_mouse_highlight (f, x, y)
                = Fnext_single_property_change (position, Qmouse_face,
                                                w->buffer, end);
              /* Record this as the current active region.  */
-             fast_find_position (window, before,
-                                 &mouse_face_beg_col, &mouse_face_beg_row);
-             fast_find_position (window, after,
-                                 &mouse_face_end_col, &mouse_face_end_row);
+             fast_find_position (window, before, &mouse_face_beg_col,
+                                 &mouse_face_beg_row);
+             mouse_face_past_end
+               = !fast_find_position (window, after, &mouse_face_end_col,
+                                      &mouse_face_end_row);
              mouse_face_window = window;
              mouse_face_face_id
                = compute_char_face (f, w, pos, 0, 0,
@@ -2301,7 +2305,9 @@ note_mouse_highlight (f, x, y)
    This assumes display in WINDOW is up to date.
    If POS is above start of WINDOW, return coords
    of start of first screen line.
-   If POS is after end of WINDOW, return coords of end of last screen line.  */
+   If POS is after end of WINDOW, return coords of end of last screen line.
+
+   Value is 1 if POS is in range, 0 if it was off screen.  */
 
 static int
 fast_find_position (window, pos, columnp, rowp)
@@ -2312,7 +2318,7 @@ fast_find_position (window, pos, columnp, rowp)
   struct window *w = XWINDOW (window);
   FRAME_PTR f = XFRAME (WINDOW_FRAME (w));
   int i;
-  int row;
+  int row = 0;
   int left = w->left;
   int top = w->top;
   int height = XFASTINT (w->height) - ! MINI_WINDOW_P (w);
@@ -2320,6 +2326,7 @@ fast_find_position (window, pos, columnp, rowp)
   int *charstarts;
   int lastcol;
 
+  /* Find the right row.  */
   for (i = 0;
        i < height;
        i++)
@@ -2331,6 +2338,7 @@ fast_find_position (window, pos, columnp, rowp)
        row = i;
     }
 
+  /* Find the right column with in it.  */
   charstarts = FRAME_CURRENT_GLYPHS (f)->charstarts[top + row];
   lastcol = left;
   for (i = 0; i < width; i++)
@@ -2342,6 +2350,8 @@ fast_find_position (window, pos, columnp, rowp)
          return 1;
        }
       else if (charstarts[left + i] > pos)
+       break;
+      else if (charstarts[left + i] > 0)
        lastcol = left + i;
     }
 
@@ -5319,6 +5329,14 @@ x_set_window_size (f, change_gravity, cols, rows)
   PIXEL_WIDTH (f) = pixelwidth;
   PIXEL_HEIGHT (f) = pixelheight;
 
+  /* If cursor was outside the new size, mark it as off.  */
+  if (f->phys_cursor_y >= rows
+      || f->phys_cursor_x >= cols)
+    {
+      f->phys_cursor_x = -1;
+      f->phys_cursor_y = -1;
+    }
+
   /* We've set {FRAME,PIXEL}_{WIDTH,HEIGHT} to the values we hope to
      receive in the ConfigureNotify event; if we get what we asked
      for, then the event won't cause the screen to become garbaged, so