window_truncation_on (struct window *w)
{
/* Minibuffer windows are never truncated.
- ### is this the right way ? */
+ #### is this the right way ? */
if (MINI_WINDOW_P (w))
return 0;
new_buffer = Fother_buffer (obj, Qnil, Qnil);
if (NILP (new_buffer))
new_buffer = Fget_buffer_create (QSscratch);
- Fset_window_buffer (w, new_buffer);
+ Fset_window_buffer (w, new_buffer, Qnil);
if (EQ (w, Fselected_window (Qnil)))
Fset_buffer (p->buffer);
}
/* Otherwise show a different buffer in the
window. */
p->dedicated = Qnil;
- Fset_window_buffer (w, another_buffer);
+ Fset_window_buffer (w, another_buffer, Qnil);
if (EQ (w, Fselected_window (Qnil)))
Fset_buffer (p->buffer);
}
window_min_height = MIN_SAFE_WINDOW_HEIGHT;
}
+static int
+frame_min_height (struct frame *frame)
+{
+ /* For height, we have to see whether the frame has a minibuffer, and
+ whether it wants a modeline. */
+ return (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1
+ : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT
+ : 2 * MIN_SAFE_WINDOW_HEIGHT - 1);
+}
+
+/* Return non-zero if both frame sizes are less than or equal to
+ minimal allowed values. ROWS and COLS are in characters */
+int
+frame_size_valid_p (struct frame *frame, int rows, int cols)
+{
+ return (rows >= frame_min_height (frame)
+ && cols >= MIN_SAFE_WINDOW_WIDTH);
+}
+
+/* Return non-zero if both frame sizes are less than or equal to
+ minimal allowed values. WIDTH and HEIGHT are in pixels */
+int
+frame_pixsize_valid_p (struct frame *frame, int width, int height)
+{
+ int rows, cols;
+ pixel_to_real_char_size (frame, width, height, &cols, &rows);
+ return frame_size_valid_p (frame, rows, cols);
+}
+
/* If *ROWS or *COLS are too small a size for FRAME, set them to the
minimum allowable size. */
void
check_frame_size (struct frame *frame, int *rows, int *cols)
{
- /* For height, we have to see whether the frame has a minibuffer, and
- whether it wants a modeline. */
- int min_height =
- (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1
- : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT
- : 2 * MIN_SAFE_WINDOW_HEIGHT - 1);
+ int min_height = frame_min_height (frame);
if (*rows < min_height)
*rows = min_height;
\f
static int window_select_count;
-DEFUN ("set-window-buffer", Fset_window_buffer, 2, 2, 0, /*
+DEFUN ("set-window-buffer", Fset_window_buffer, 2, 3, 0, /*
Make WINDOW display BUFFER as its contents.
BUFFER can be a buffer or buffer name.
+
+With non-nil optional argument `norecord', do not modify the
+global or per-frame buffer ordering.
*/
- (window, buffer))
+ (window, buffer, norecord))
{
Lisp_Object tem;
struct window *w = decode_window (window);
recompute_all_cached_specifiers_in_window (w);
if (EQ (window, Fselected_window (Qnil)))
{
+ if (NILP (norecord))
+ Frecord_buffer (buffer);
+
Fset_buffer (buffer);
}
return Qnil;
/* do this last (after the window is completely initialized and
the mirror-dirty flag is set) so that specifier recomputation
caused as a result of this will work properly and not abort. */
- Fset_window_buffer (new, o->buffer);
+ Fset_window_buffer (new, o->buffer, Qt);
return new;
}
\f
if (INTP (Vwindow_pixel_scroll_increment))
fheight = XINT (Vwindow_pixel_scroll_increment);
- else if (!NILP (Vwindow_pixel_scroll_increment));
+ else if (!NILP (Vwindow_pixel_scroll_increment))
default_face_height_and_width (window, &fheight, &fwidth);
if (Dynarr_length (dla) >= 1)
w->start_at_line_beg = beginning_of_line_p (b, startp);
MARK_WINDOWS_CHANGED (w);
+ /* #### Scroll back by less than a line. This code was
+ originally for scrolling over large pixmaps and it
+ loses when a line being *exposed* at the top of the
+ window is bigger than the current one. However, for
+ pixel based scrolling in general we can guess that
+ the line we are going to display is probably the same
+ size as the one we are on. In that instance we can
+ have a reasonable stab at a suitable top clip. Fixing
+ this properly is hard (and probably slow) as we would
+ have to call redisplay to figure out the exposed line
+ size. */
+ if (!NILP (Vwindow_pixel_scroll_increment)
+ && Dynarr_length (dla) >= (1 + modeline)
+ && dl->ascent + fheight * value > 0)
+ {
+ WINDOW_TEXT_TOP_CLIP (w) = (dl->ascent + fheight * value);
+ }
+
if (!point_would_be_visible (w, startp, XINT (point)))
{
Bufpos new_point;