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desktop-shell: use work area instead of panel size to constrain moves

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This fixes the case where an output isn't at y = 0, where the panel height
isn't correct for constraints.

It also kills a bug - moving a window with a mod-drag off the top of the
screen clamped earlier than it should.

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
This commit is contained in:
Derek Foreman 2015-04-15 12:23:56 -05:00 committed by Bryce Harrington
parent 612341f1a6
commit 6feb0f9f55
1 changed files with 12 additions and 9 deletions
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21
desktop-shell/shell.c
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@ -1668,24 +1668,27 @@ constrain_position(struct weston_move_grab *move, int *cx, int *cy)
{
struct shell_surface *shsurf = move->base.shsurf;
struct weston_pointer *pointer = move->base.grab.pointer;
int x, y, panel_width, panel_height, bottom;
int x, y, bottom;
const int safety = 50;
pixman_rectangle32_t area;
x = wl_fixed_to_int(pointer->x + move->dx);
y = wl_fixed_to_int(pointer->y + move->dy);
if (shsurf->shell->panel_position == DESKTOP_SHELL_PANEL_POSITION_TOP) {
get_output_panel_size(shsurf->shell, shsurf->surface->output,
&panel_width, &panel_height);
get_output_work_area(shsurf->shell,
shsurf->surface->output,
&area);
bottom = y + shsurf->geometry.height;
if (bottom - panel_height < safety)
y = panel_height + safety -
shsurf->geometry.height;
bottom = y + shsurf->geometry.height + shsurf->geometry.y;
if (bottom - safety < area.y)
y = area.y + safety - shsurf->geometry.height
- shsurf->geometry.y;
if (move->client_initiated &&
y + shsurf->geometry.y < panel_height)
y = panel_height - shsurf->geometry.y;
y + shsurf->geometry.y < area.y)
y = area.y - shsurf->geometry.y;
}
*cx = x;