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Prevent introducing invalid scroll bar width/height values (Bug#34569)

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* src/frame.c (store_frame_param): Don't store invalid values
for scroll_bar_width/height.
(x_report_frame_params): Don't report invalid values for
scroll_bar_width/height.
(x_set_scroll_bar_width, x_set_scroll_bar_height): Don't set
invalid values for scroll_bar_width/height.
This commit is contained in:
Martin Rudalics 2019-03-04 10:28:56 +01:00
parent a810a75aa2
commit ad25316bde
1 changed files with 23 additions and 20 deletions
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43
src/frame.c
View file

@ -2973,6 +2973,13 @@ store_frame_param (struct frame *f, Lisp_Object prop, Lisp_Object val)
fset_buried_buffer_list (f, Fnreverse (list));
return;
}
else if ((EQ (prop, Qscroll_bar_width) || EQ (prop, Qscroll_bar_height))
&& !NILP (val) && !RANGED_FIXNUMP (1, val, INT_MAX))
{
Lisp_Object old_val = Fcdr (Fassq (prop, f->param_alist));
val = old_val;
}
/* The tty color needed to be set before the frame's parameter
alist was updated with the new value. This is not true any more,
@ -4117,18 +4124,14 @@ x_report_frame_params (struct frame *f, Lisp_Object *alistptr)
store_in_alist (alistptr, Qright_fringe,
make_fixnum (FRAME_RIGHT_FRINGE_WIDTH (f)));
store_in_alist (alistptr, Qscroll_bar_width,
(! FRAME_HAS_VERTICAL_SCROLL_BARS (f)
? make_fixnum (0)
: FRAME_CONFIG_SCROLL_BAR_WIDTH (f) > 0
(FRAME_CONFIG_SCROLL_BAR_WIDTH (f) > 0
? make_fixnum (FRAME_CONFIG_SCROLL_BAR_WIDTH (f))
/* nil means "use default width"
for non-toolkit scroll bar.
ruler-mode.el depends on this. */
: Qnil));
store_in_alist (alistptr, Qscroll_bar_height,
(! FRAME_HAS_HORIZONTAL_SCROLL_BARS (f)
? make_fixnum (0)
: FRAME_CONFIG_SCROLL_BAR_HEIGHT (f) > 0
(FRAME_CONFIG_SCROLL_BAR_HEIGHT (f) > 0
? make_fixnum (FRAME_CONFIG_SCROLL_BAR_HEIGHT (f))
/* nil means "use default height"
for non-toolkit scroll bar. */
@ -4598,20 +4601,20 @@ x_set_scroll_bar_width (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
{
int unit = FRAME_COLUMN_WIDTH (f);
if (NILP (arg))
if (RANGED_FIXNUMP (1, arg, INT_MAX)
&& XFIXNAT (arg) != FRAME_CONFIG_SCROLL_BAR_WIDTH (f))
{
x_set_scroll_bar_default_width (f);
FRAME_CONFIG_SCROLL_BAR_WIDTH (f) = XFIXNAT (arg);
FRAME_CONFIG_SCROLL_BAR_COLS (f) = (XFIXNAT (arg) + unit - 1) / unit;
if (FRAME_X_WINDOW (f))
adjust_frame_size (f, -1, -1, 3, 0, Qscroll_bar_width);
SET_FRAME_GARBAGED (f);
}
else if (RANGED_FIXNUMP (1, arg, INT_MAX)
&& XFIXNAT (arg) != FRAME_CONFIG_SCROLL_BAR_WIDTH (f))
else
{
FRAME_CONFIG_SCROLL_BAR_WIDTH (f) = XFIXNAT (arg);
FRAME_CONFIG_SCROLL_BAR_COLS (f) = (XFIXNAT (arg) + unit - 1) / unit;
x_set_scroll_bar_default_width (f);
if (FRAME_X_WINDOW (f))
adjust_frame_size (f, -1, -1, 3, 0, Qscroll_bar_width);
@ -4628,20 +4631,20 @@ x_set_scroll_bar_height (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
#if USE_HORIZONTAL_SCROLL_BARS
int unit = FRAME_LINE_HEIGHT (f);
if (NILP (arg))
if (RANGED_FIXNUMP (1, arg, INT_MAX)
&& XFIXNAT (arg) != FRAME_CONFIG_SCROLL_BAR_HEIGHT (f))
{
x_set_scroll_bar_default_height (f);
FRAME_CONFIG_SCROLL_BAR_HEIGHT (f) = XFIXNAT (arg);
FRAME_CONFIG_SCROLL_BAR_LINES (f) = (XFIXNAT (arg) + unit - 1) / unit;
if (FRAME_X_WINDOW (f))
adjust_frame_size (f, -1, -1, 3, 0, Qscroll_bar_height);
SET_FRAME_GARBAGED (f);
}
else if (RANGED_FIXNUMP (1, arg, INT_MAX)
&& XFIXNAT (arg) != FRAME_CONFIG_SCROLL_BAR_HEIGHT (f))
else
{
FRAME_CONFIG_SCROLL_BAR_HEIGHT (f) = XFIXNAT (arg);
FRAME_CONFIG_SCROLL_BAR_LINES (f) = (XFIXNAT (arg) + unit - 1) / unit;
x_set_scroll_bar_default_height (f);
if (FRAME_X_WINDOW (f))
adjust_frame_size (f, -1, -1, 3, 0, Qscroll_bar_height);