weston/libweston/shell-utils/shell-utils.c

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/*
* Copyright 2010-2012 Intel Corporation
* Copyright 2013 Raspberry Pi Foundation
* Copyright 2011-2012,2021 Collabora, Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
#include "config.h"
#include <libweston/shell-utils.h>
#include <libweston/desktop.h>
WL_EXPORT struct weston_output *
weston_shell_utils_get_default_output(struct weston_compositor *compositor)
{
if (wl_list_empty(&compositor->output_list))
return NULL;
return container_of(compositor->output_list.next,
struct weston_output, link);
}
WL_EXPORT struct weston_output *
weston_shell_utils_get_focused_output(struct weston_compositor *compositor)
{
struct weston_seat *seat;
struct weston_output *output = NULL;
wl_list_for_each(seat, &compositor->seat_list, link) {
struct weston_touch *touch = weston_seat_get_touch(seat);
struct weston_pointer *pointer = weston_seat_get_pointer(seat);
struct weston_keyboard *keyboard =
weston_seat_get_keyboard(seat);
/* Priority has touch focus, then pointer and
* then keyboard focus. We should probably have
* three for loops and check first for touch,
* then for pointer, etc. but unless somebody has some
* objections, I think this is sufficient. */
if (touch && touch->focus)
output = touch->focus->output;
else if (pointer && pointer->focus)
output = pointer->focus->output;
else if (keyboard && keyboard->focus)
output = keyboard->focus->output;
if (output)
break;
}
return output;
}
/* TODO: Fix this function to take into account nested subsurfaces. */
WL_EXPORT void
weston_shell_utils_subsurfaces_boundingbox(struct weston_surface *surface,
int32_t *x, int32_t *y,
int32_t *w, int32_t *h)
{
pixman_region32_t region;
pixman_box32_t *box;
struct weston_subsurface *subsurface;
pixman_region32_init_rect(&region, 0, 0,
surface->width,
surface->height);
wl_list_for_each(subsurface, &surface->subsurface_list, parent_link) {
pixman_region32_union_rect(&region, &region,
subsurface->position.x,
subsurface->position.y,
subsurface->surface->width,
subsurface->surface->height);
}
box = pixman_region32_extents(&region);
if (x)
*x = box->x1;
if (y)
*y = box->y1;
if (w)
*w = box->x2 - box->x1;
if (h)
*h = box->y2 - box->y1;
pixman_region32_fini(&region);
}
WL_EXPORT void
weston_shell_utils_center_on_output(struct weston_view *view,
struct weston_output *output)
{
int32_t surf_x, surf_y, width, height;
float x, y;
if (!output) {
weston_view_set_position(view, 0, 0);
return;
}
weston_shell_utils_subsurfaces_boundingbox(view->surface, &surf_x,
&surf_y, &width, &height);
x = output->x + (output->width - width) / 2 - surf_x / 2;
y = output->y + (output->height - height) / 2 - surf_y / 2;
weston_view_set_position(view, x, y);
}
WL_EXPORT int
weston_shell_utils_surface_get_label(struct weston_surface *surface,
char *buf, size_t len)
{
const char *t, *c;
struct weston_desktop_surface *desktop_surface =
weston_surface_get_desktop_surface(surface);
t = weston_desktop_surface_get_title(desktop_surface);
c = weston_desktop_surface_get_app_id(desktop_surface);
return snprintf(buf, len, "%s window%s%s%s%s%s",
"top-level",
t ? " '" : "", t ?: "", t ? "'" : "",
c ? " of " : "", c ?: "");
}
WL_EXPORT struct weston_curtain *
weston_shell_utils_curtain_create(struct weston_compositor *compositor,
struct weston_curtain_params *params)
{
struct weston_curtain *curtain;
struct weston_surface *surface = NULL;
struct weston_buffer_reference *buffer_ref;
struct weston_view *view;
curtain = zalloc(sizeof(*curtain));
if (curtain == NULL)
goto err;
surface = weston_surface_create(compositor);
if (surface == NULL)
goto err_curtain;
view = weston_view_create(surface);
if (view == NULL)
goto err_surface;
buffer_ref = weston_buffer_create_solid_rgba(compositor,
params->r,
params->g,
params->b,
params->a);
if (buffer_ref == NULL)
goto err_view;
curtain->view = view;
curtain->buffer_ref = buffer_ref;
weston_surface_set_label_func(surface, params->get_label);
surface->committed = params->surface_committed;
surface->committed_private = params->surface_private;
weston_surface_attach_solid(surface, buffer_ref, params->width,
params->height);
pixman_region32_fini(&surface->input);
if (params->capture_input) {
pixman_region32_init_rect(&surface->input, 0, 0,
params->width, params->height);
} else {
pixman_region32_init(&surface->input);
}
weston_surface_map(surface);
weston_view_set_position(view, params->x, params->y);
return curtain;
err_view:
weston_view_destroy(view);
err_surface:
weston_surface_unref(surface);
err_curtain:
free(curtain);
err:
weston_log("no memory\n");
return NULL;
}
WL_EXPORT void
weston_shell_utils_curtain_destroy(struct weston_curtain *curtain)
{
struct weston_surface *surface = curtain->view->surface;
weston_view_destroy(curtain->view);
weston_surface_unref(surface);
weston_buffer_destroy_solid(curtain->buffer_ref);
free(curtain);
}