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Minimize the unpleasent visual impact of the requirement

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that non-toolkit tool-bars must occupy an integral number of screen
lines, by distributing the rows evenly over the tool-bar screen	area.
(Vtool_bar_border): New variable.
(syms_of_xdisp): DEFVAR_LISP it.
(display_tool_bar_line): Add HEIGHT arg for desired row height.  Make
tool-bar row the desired height.  Use default face for border below
tool-bar.
(tool_bar_lines_needed): Add N_ROWS arg.  Use it to return number of
actual tool-bar rows.
(redisplay_tool_bar): Calculate f->n_tool_bar_rows initially.
Adjust the height of the tool-bar rows to fill tool-bar screen area.
(redisplay_tool_bar): Calculate f->n_tool_bar_rows when tool-bar area
is resized.
This commit is contained in:
Kim F. Storm 2006-03-02 21:55:26 +00:00
parent 045cff16b9
commit c07b35ec17
1 changed files with 88 additions and 11 deletions
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99
src/xdisp.c
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@ -269,6 +269,12 @@ int auto_raise_tool_bar_buttons_p;
int make_cursor_line_fully_visible_p;
/* Margin below tool bar in pixels. 0 or nil means no margin.
If value is `internal-border-width' or `border-width',
the corresponding frame parameter is used. */
Lisp_Object Vtool_bar_border;
/* Margin around tool bar buttons in pixels. */
Lisp_Object Vtool_bar_button_margin;
@ -852,7 +858,7 @@ static void store_mode_line_noprop_char P_ ((char));
static int store_mode_line_noprop P_ ((const unsigned char *, int, int));
static void x_consider_frame_title P_ ((Lisp_Object));
static void handle_stop P_ ((struct it *));
static int tool_bar_lines_needed P_ ((struct frame *));
static int tool_bar_lines_needed P_ ((struct frame *, int *));
static int single_display_spec_intangible_p P_ ((Lisp_Object));
static void ensure_echo_area_buffers P_ ((void));
static Lisp_Object unwind_with_echo_area_buffer P_ ((Lisp_Object));
@ -963,7 +969,7 @@ static int in_ellipses_for_invisible_text_p P_ ((struct display_pos *,
static void update_tool_bar P_ ((struct frame *, int));
static void build_desired_tool_bar_string P_ ((struct frame *f));
static int redisplay_tool_bar P_ ((struct frame *));
static void display_tool_bar_line P_ ((struct it *));
static void display_tool_bar_line P_ ((struct it *, int));
static void notice_overwritten_cursor P_ ((struct window *,
enum glyph_row_area,
int, int, int, int));
@ -9424,11 +9430,17 @@ build_desired_tool_bar_string (f)
}
/* Display one line of the tool-bar of frame IT->f. */
/* Display one line of the tool-bar of frame IT->f.
HEIGHT specifies the desired height of the tool-bar line.
If the actual height of the glyph row is less than HEIGHT, the
row's height is increased to HEIGHT, and the icons are centered
vertically in the new height. */
static void
display_tool_bar_line (it)
display_tool_bar_line (it, height)
struct it *it;
int height;
{
struct glyph_row *row = it->glyph_row;
int max_x = it->last_visible_x;
@ -9484,11 +9496,22 @@ display_tool_bar_line (it)
out:;
row->displays_text_p = row->used[TEXT_AREA] != 0;
/* Use default face for the border below the tool bar. */
if (!row->displays_text_p)
it->face_id = DEFAULT_FACE_ID;
extend_face_to_end_of_line (it);
last = row->glyphs[TEXT_AREA] + row->used[TEXT_AREA] - 1;
last->right_box_line_p = 1;
if (last == row->glyphs[TEXT_AREA])
last->left_box_line_p = 1;
/* Make line the desired height and center it vertically. */
if ((height -= it->max_ascent + it->max_descent) > 0)
{
it->max_ascent += height / 2;
it->max_descent += (height + 1) / 2;
}
compute_line_metrics (it);
/* If line is empty, make it occupy the rest of the tool-bar. */
@ -9512,11 +9535,13 @@ display_tool_bar_line (it)
/* Value is the number of screen lines needed to make all tool-bar
items of frame F visible. */
items of frame F visible. The number of actual rows needed is
returned in *N_ROWS if non-NULL. */
static int
tool_bar_lines_needed (f)
tool_bar_lines_needed (f, n_rows)
struct frame *f;
int *n_rows;
{
struct window *w = XWINDOW (f->tool_bar_window);
struct it it;
@ -9532,9 +9557,12 @@ tool_bar_lines_needed (f)
{
it.glyph_row = w->desired_matrix->rows;
clear_glyph_row (it.glyph_row);
display_tool_bar_line (&it);
display_tool_bar_line (&it, 0);
}
if (n_rows)
*n_rows = it.vpos;
return (it.current_y + FRAME_LINE_HEIGHT (f) - 1) / FRAME_LINE_HEIGHT (f);
}
@ -9563,7 +9591,7 @@ DEFUN ("tool-bar-lines-needed", Ftool_bar_lines_needed, Stool_bar_lines_needed,
if (f->n_tool_bar_items)
{
build_desired_tool_bar_string (f);
nlines = tool_bar_lines_needed (f);
nlines = tool_bar_lines_needed (f, NULL);
}
}
@ -9608,9 +9636,50 @@ redisplay_tool_bar (f)
build_desired_tool_bar_string (f);
reseat_to_string (&it, NULL, f->desired_tool_bar_string, 0, 0, 0, -1);
if (f->n_tool_bar_rows == 0)
{
(void)tool_bar_lines_needed (f, &f->n_tool_bar_rows);
if (f->n_tool_bar_rows == 0)
f->n_tool_bar_rows = -1;
}
/* Display as many lines as needed to display all tool-bar items. */
while (it.current_y < it.last_visible_y)
display_tool_bar_line (&it);
if (f->n_tool_bar_rows > 0)
{
int border, rows, height, extra;
if (INTEGERP (Vtool_bar_border))
border = XINT (Vtool_bar_border);
else if (EQ (Vtool_bar_border, Qinternal_border_width))
border = FRAME_INTERNAL_BORDER_WIDTH (f);
else if (EQ (Vtool_bar_border, Qborder_width))
border = f->border_width;
else
border = 0;
if (border < 0)
border = 0;
rows = f->n_tool_bar_rows;
height = (it.last_visible_y - border) / rows;
extra = it.last_visible_y - border - height * rows;
while (it.current_y < it.last_visible_y)
{
int h = 0;
if (extra > 0 && rows-- > 0)
{
h = (extra + rows - 1) / rows;
extra -= h;
}
display_tool_bar_line (&it, height + h);
}
}
else
{
while (it.current_y < it.last_visible_y)
display_tool_bar_line (&it, 0);
}
/* It doesn't make much sense to try scrolling in the tool-bar
window, so don't do it. */
@ -9643,7 +9712,7 @@ redisplay_tool_bar (f)
/* Resize windows as needed by changing the `tool-bar-lines'
frame parameter. */
if (change_height_p
&& (nlines = tool_bar_lines_needed (f),
&& (nlines = tool_bar_lines_needed (f, &f->n_tool_bar_rows),
nlines != WINDOW_TOTAL_LINES (w)))
{
extern Lisp_Object Qtool_bar_lines;
@ -23642,6 +23711,14 @@ otherwise. */);
doc: /* *Non-nil means to scroll (recenter) cursor line if it is not fully visible. */);
make_cursor_line_fully_visible_p = 1;
DEFVAR_LISP ("tool-bar-border", &Vtool_bar_border,
doc: /* *Border below tool-bar in pixels.
If an integer, use it as the height of the border.
If it is one of `internal-border-width' or `border-width', use the
value of the corresponding frame parameter.
Otherwise, no border is added below the tool-bar. */);
Vtool_bar_border = Qinternal_border_width;
DEFVAR_LISP ("tool-bar-button-margin", &Vtool_bar_button_margin,
doc: /* *Margin around tool-bar buttons in pixels.
If an integer, use that for both horizontal and vertical margins.