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/*
* Copyright © 2022 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "config.h"
#include "gdkmacosdisplay-private.h"
#include "gdkmacosmonitor.h"
#include "gdkmacossurface-private.h"
#include "gdkmacostoplevelsurface-private.h"
#define WARP_OFFSET_X 15
#define WARP_OFFSET_Y 15
static void
_gdk_macos_display_position_toplevel_with_parent (GdkMacosDisplay *self,
GdkMacosSurface *surface,
GdkMacosSurface *parent,
int *x,
int *y)
{
GdkRectangle surface_rect;
GdkRectangle parent_rect;
GdkRectangle workarea;
GdkMonitor *monitor;
g_assert (GDK_IS_MACOS_DISPLAY (self));
g_assert (GDK_IS_MACOS_TOPLEVEL_SURFACE (surface));
g_assert (GDK_IS_MACOS_TOPLEVEL_SURFACE (parent));
/* If x/y is set, we should place relative to parent */
if (GDK_SURFACE (surface)->x != 0 || GDK_SURFACE (surface)->y != 0)
{
*x = parent->root_x + GDK_SURFACE (surface)->x;
*y = parent->root_y + GDK_SURFACE (surface)->y;
return;
}
/* Try to center on top of the parent but also try to make the whole thing
* visible in case that lands us under the topbar/panel/etc.
*/
surface_rect.x = surface->root_x + surface->shadow_left;
surface_rect.y = surface->root_y + surface->shadow_top;
surface_rect.width = GDK_SURFACE (surface)->width - surface->shadow_left - surface->shadow_right;
surface_rect.height = GDK_SURFACE (surface)->height - surface->shadow_top - surface->shadow_bottom;
parent_rect.x = parent->root_x + surface->shadow_left;
parent_rect.y = parent->root_y + surface->shadow_top;
parent_rect.width = GDK_SURFACE (parent)->width - surface->shadow_left - surface->shadow_right;
parent_rect.height = GDK_SURFACE (parent)->height - surface->shadow_top - surface->shadow_bottom;
/* Try to place centered atop parent */
surface_rect.x = parent_rect.x + ((parent_rect.width - surface_rect.width) / 2);
surface_rect.y = parent_rect.y + ((parent_rect.height - surface_rect.height) / 2);
/* Now make sure that we don't overlap the top-bar */
monitor = _gdk_macos_surface_get_best_monitor (parent);
gdk_macos_monitor_get_workarea (monitor, &workarea);
if (surface_rect.x < workarea.x)
surface_rect.x = workarea.x;
if (surface_rect.y < workarea.y)
surface_rect.y = workarea.y;
*x = surface_rect.x - surface->shadow_left;
*y = surface_rect.y - surface->shadow_top;
}
static inline gboolean
has_surface_at_origin (const GList *surfaces,
int x,
int y)
{
for (const GList *iter = surfaces; iter; iter = iter->next)
{
GdkMacosSurface *surface = iter->data;
if (surface->root_x == x && surface->root_y == y)
return TRUE;
}
return FALSE;
}
static void
_gdk_macos_display_position_toplevel (GdkMacosDisplay *self,
GdkMacosSurface *surface,
int *x,
int *y)
{
cairo_rectangle_int_t surface_rect;
GdkRectangle workarea;
const GList *surfaces;
GdkMonitor *monitor;
CGPoint mouse;
g_assert (GDK_IS_MACOS_DISPLAY (self));
g_assert (GDK_IS_MACOS_TOPLEVEL_SURFACE (surface));
mouse = [NSEvent mouseLocation];
monitor = _gdk_macos_display_get_monitor_at_display_coords (self, mouse.x, mouse.y);
gdk_macos_monitor_get_workarea (monitor, &workarea);
/* First place at top-left of current monitor */
surface_rect.width = GDK_SURFACE (surface)->width - surface->shadow_left - surface->shadow_right;
surface_rect.height = GDK_SURFACE (surface)->height - surface->shadow_top - surface->shadow_bottom;
surface_rect.x = workarea.x + ((workarea.width - surface_rect.width) / 2);
surface_rect.y = workarea.y + ((workarea.height - surface_rect.height) / 2);
if (surface_rect.x < workarea.x)
surface_rect.x = workarea.x;
if (surface_rect.y < workarea.y)
surface_rect.y = workarea.y;
*x = surface_rect.x - surface->shadow_left;
*y = surface_rect.y - surface->shadow_top;
/* Try to see if there are any other surfaces at this origin and if so,
* adjust until we get something better.
*/
surfaces = _gdk_macos_display_get_surfaces (self);
while (has_surface_at_origin (surfaces, *x, *y))
{
*x += WARP_OFFSET_X;
*y += WARP_OFFSET_Y;
/* If we reached the bottom right, just bail and try the workspace origin */
if (*x + surface->shadow_left + WARP_OFFSET_X > workarea.x + workarea.width ||
*y + surface->shadow_top + WARP_OFFSET_Y > workarea.y + workarea.height)
{
*x = workarea.x - surface->shadow_left;
*y = workarea.y - surface->shadow_top;
return;
}
}
}
/*<private>
* _gdk_macos_display_position_surface:
*
* Tries to position a window on a screen without landing in edges
* and other weird areas the user can't use.
*/
void
_gdk_macos_display_position_surface (GdkMacosDisplay *self,
GdkMacosSurface *surface,
int *x,
int *y)
{
GdkSurface *transient_for;
g_return_if_fail (GDK_IS_MACOS_DISPLAY (self));
g_return_if_fail (GDK_IS_MACOS_TOPLEVEL_SURFACE (surface));
transient_for = GDK_SURFACE (surface)->transient_for;
if (transient_for != NULL)
_gdk_macos_display_position_toplevel_with_parent (self, surface, GDK_MACOS_SURFACE (transient_for), x, y);
else
_gdk_macos_display_position_toplevel (self, surface, x, y);
}
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