Commit 36f8209a authored by Jason Rumney's avatar Jason Rumney
Browse files

(x_set_tool_bar_lines): Clear internal border when making tool bar

smaller. When clearing the frame, also clear current matrices. Clear
frame when tool bar disappears. Don't use more lines for the tool-bar
than is available.
parent 2be8f184
......@@ -2522,7 +2522,8 @@ x_set_tool_bar_lines (f, value, oldval)
struct frame *f;
Lisp_Object value, oldval;
int delta, nlines;
int delta, nlines, root_height;
Lisp_Object root_window;
/* Use VALUE only if an integer >= 0. */
if (INTEGERP (value) && XINT (value) >= 0)
......@@ -2534,10 +2535,51 @@ x_set_tool_bar_lines (f, value, oldval)
delta = nlines - FRAME_TOOL_BAR_LINES (f);
/* Don't resize the tool-bar to more than we have room for. */
root_window = FRAME_ROOT_WINDOW (f);
root_height = XINT (XWINDOW (root_window)->height);
if (root_height - delta < 1)
delta = root_height - 1;
nlines = FRAME_TOOL_BAR_LINES (f) + delta;
FRAME_TOOL_BAR_LINES (f) = nlines;
x_set_window_size (f, 0, FRAME_WIDTH (f), FRAME_HEIGHT (f));
do_pending_window_change (0);
x_change_window_heights (root_window, delta);
adjust_glyphs (f);
/* We also have to make sure that the internal border at the top of
the frame, below the menu bar or tool bar, is redrawn when the
tool bar disappears. This is so because the internal border is
below the tool bar if one is displayed, but is below the menu bar
if there isn't a tool bar. The tool bar draws into the area
below the menu bar. */
if (FRAME_W32_WINDOW (f) && FRAME_TOOL_BAR_LINES (f) == 0)
updating_frame = f;
clear_frame ();
clear_current_matrices (f);
updating_frame = NULL;
/* If the tool bar gets smaller, the internal border below it
has to be cleared. It was formerly part of the display
of the larger tool bar, and updating windows won't clear it. */
if (delta < 0)
int width = PIXEL_WIDTH (f);
int y = nlines * CANON_Y_UNIT (f);
HDC hdc = get_frame_dc (f);
w32_clear_area (f, hdc, 0, y, width, height);
release_frame_dc (f, hdc);
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