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/*
* Wayland Support
*
* Copyright (C) 2018-2019 Robert Mader <robert.mader@posteo.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "meta-wayland-viewporter.h"
#include <glib.h>
#include "wayland/meta-wayland-private.h"
#include "wayland/meta-wayland-subsurface.h"
#include "wayland/meta-wayland-surface.h"
#include "wayland/meta-wayland-versions.h"
#include "viewporter-server-protocol.h"
static void
wp_viewport_destructor (struct wl_resource *resource)
{
MetaWaylandSurface *surface;
MetaWaylandSurfaceState *pending;
surface = wl_resource_get_user_data (resource);
if (!surface)
return;
g_clear_signal_handler (&surface->viewport.destroy_handler_id, surface);
pending = meta_wayland_surface_get_pending_state (surface);
pending->viewport_src_rect.size.width = -1;
pending->viewport_dst_width = -1;
pending->has_new_viewport_src_rect = TRUE;
pending->has_new_viewport_dst_size = TRUE;
surface->viewport.resource = NULL;
}
static void
on_surface_destroyed (MetaWaylandSurface *surface)
{
wl_resource_set_user_data (surface->viewport.resource, NULL);
}
static void
wp_viewport_destroy (struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy (resource);
}
static void
wp_viewport_set_source (struct wl_client *client,
struct wl_resource *resource,
wl_fixed_t src_x,
wl_fixed_t src_y,
wl_fixed_t src_width,
wl_fixed_t src_height)
{
MetaWaylandSurface *surface;
float new_x;
float new_y;
float new_width;
float new_height;
surface = wl_resource_get_user_data (resource);
if (!surface)
{
wl_resource_post_error (resource,
WP_VIEWPORT_ERROR_NO_SURFACE,
"wl_surface for this viewport no longer exists");
return;
}
new_x = wl_fixed_to_double (src_x);
new_y = wl_fixed_to_double (src_y);
new_width = wl_fixed_to_double (src_width);
new_height = wl_fixed_to_double (src_height);
if ((new_x >= 0 && new_y >= 0 &&
new_width > 0 && new_height > 0) ||
(new_x == -1 && new_y == -1 &&
new_width == -1 && new_height == -1))
{
MetaWaylandSurfaceState *pending;
pending = meta_wayland_surface_get_pending_state (surface);
pending->viewport_src_rect.origin.x = new_x;
pending->viewport_src_rect.origin.y = new_y;
pending->viewport_src_rect.size.width = new_width;
pending->viewport_src_rect.size.height = new_height;
pending->has_new_viewport_src_rect = TRUE;
}
else
{
wl_resource_post_error (resource,
WP_VIEWPORT_ERROR_BAD_VALUE,
"x and y values must be zero or positive and "
"width and height valuest must be positive or "
"all values must be -1 to unset the viewport");
}
}
static void
wp_viewport_set_destination (struct wl_client *client,
struct wl_resource *resource,
int dst_width,
int dst_height)
{
MetaWaylandSurface *surface;
surface = wl_resource_get_user_data (resource);
if (!surface)
{
wl_resource_post_error (resource,
WP_VIEWPORT_ERROR_NO_SURFACE,
"wl_surface for this viewport no longer exists");
return;
}
if ((dst_width > 0 && dst_height > 0) ||
(dst_width == -1 && dst_height == -1))
{
MetaWaylandSurfaceState *pending;
pending = meta_wayland_surface_get_pending_state (surface);
pending->viewport_dst_width = dst_width;
pending->viewport_dst_height = dst_height;
pending->has_new_viewport_dst_size = TRUE;
}
else
{
wl_resource_post_error (resource,
WP_VIEWPORT_ERROR_BAD_VALUE,
"all values must be either positive or -1");
}
}
static const struct wp_viewport_interface meta_wayland_viewport_interface = {
wp_viewport_destroy,
wp_viewport_set_source,
wp_viewport_set_destination,
};
static void
wp_viewporter_destroy (struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy (resource);
}
static void
wp_viewporter_get_viewport (struct wl_client *client,
struct wl_resource *resource,
uint32_t viewport_id,
struct wl_resource *surface_resource)
{
MetaWaylandSurface *surface;
struct wl_resource *viewport_resource;
surface = wl_resource_get_user_data (surface_resource);
if (surface->viewport.resource)
{
wl_resource_post_error (resource,
WP_VIEWPORTER_ERROR_VIEWPORT_EXISTS,
"viewport already exists on surface");
return;
}
viewport_resource = wl_resource_create (client,
&wp_viewport_interface,
wl_resource_get_version (resource),
viewport_id);
wl_resource_set_implementation (viewport_resource,
&meta_wayland_viewport_interface,
surface,
wp_viewport_destructor);
surface->viewport.resource = viewport_resource;
surface->viewport.destroy_handler_id =
g_signal_connect (surface,
"destroy",
G_CALLBACK (on_surface_destroyed),
NULL);
}
static const struct wp_viewporter_interface meta_wayland_viewporter_interface = {
wp_viewporter_destroy,
wp_viewporter_get_viewport,
};
static void
wp_viewporter_bind (struct wl_client *client,
void *data,
uint32_t version,
uint32_t id)
{
struct wl_resource *resource;
resource = wl_resource_create (client,
&wp_viewporter_interface,
version,
id);
wl_resource_set_implementation (resource,
&meta_wayland_viewporter_interface,
data,
NULL);
}
void
meta_wayland_init_viewporter (MetaWaylandCompositor *compositor)
{
if (wl_global_create (compositor->wayland_display,
&wp_viewporter_interface,
META_WP_VIEWPORTER_VERSION,
compositor,
wp_viewporter_bind) == NULL)
g_error ("Failed to register a global wl-viewporter object");
}
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