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view: better honor usable areas when changing outputs...

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...in view_move_to_edge. If a view is fully within the usable area of
its original output, it should be fully within the usable area (if
possible) on its new output.
This commit is contained in:
Andrew J. Hesford 2024-01-30 14:41:33 -05:00 • committed by Johan Malm
parent fc922fde21
commit 01af000cd1
1 changed files with 47 additions and 18 deletions
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65
src/view.c
View file

@ -1540,6 +1540,42 @@ view_get_adjacent_output(struct view *view, enum view_edge edge)
return output;
}
static int
shift_view_to_usable_1d(int size,
int cur_pos, int cur_lo, int cur_extent,
int next_pos, int next_lo, int next_extent,
int margin_lo, int margin_hi)
{
int cur_min = cur_lo + rc.gap + margin_lo;
int cur_max = cur_lo + cur_extent - rc.gap - margin_hi;
int next_min = next_lo + rc.gap + margin_lo;
int next_max = next_lo + next_extent - rc.gap - margin_hi;
/*
* If the view is fully within the usable area of its original display,
* ensure that it is also fully within the usable area of the target.
*/
if (cur_pos >= cur_min && cur_pos + size <= cur_max) {
if (next_pos >= next_min && next_pos + size > next_max) {
next_pos = next_max - size;
}
return MAX(next_pos, next_min);
}
/*
* If the view was not fully within the usable area of its original
* display, kick it onscreen if its midpoint will be off the target.
*/
int midpoint = next_pos + size / 2;
if (next_pos >= next_min && midpoint > next_lo + next_extent) {
next_pos = next_max - size;
}
return MAX(next_pos, next_min);
}
void
view_move_to_edge(struct view *view, enum view_edge direction, bool snap_to_windows)
{
@ -1603,26 +1639,19 @@ view_move_to_edge(struct view *view, enum view_edge direction, bool snap_to_wind
return;
}
/* If more than half the view is right of usable region, align to right */
int midpoint = destination_x + view->pending.width / 2;
struct wlr_box original_usable =
output_usable_area_in_layout_coords(view->output);
if (destination_x >= left && midpoint > usable.x + usable.width) {
destination_x = right - view->pending.width;
}
/* Make sure the window is appropriately in view along the x direction */
destination_x = shift_view_to_usable_1d(view->pending.width,
view->pending.x, original_usable.x, original_usable.width,
destination_x, usable.x, usable.width, margin.left, margin.right);
/* Never allow the window to start left of the usable edge */
destination_x = MAX(destination_x, left);
/* If more than half the view is below usable region, align to bottom */
midpoint = destination_y
+ view_effective_height(view, /* use_pending */ true) / 2;
if (destination_y >= top && midpoint > usable.y + usable.height) {
destination_y = bottom
- view_effective_height(view, /* use_pending */ true);
}
/* Never allow the window to start above the usable edge */
destination_y = MAX(destination_y, top);
/* Make sure the window is appropriately in view along the y direction */
int eff_height = view_effective_height(view, /* use_pending */ true);
destination_y = shift_view_to_usable_1d(eff_height,
view->pending.y, original_usable.y, original_usable.height,
destination_y, usable.y, usable.height, margin.top, margin.bottom);
view_set_untiled(view);
view_set_output(view, output);