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/* Generated by wayland-scanner 1.13.0 */
#ifndef ALPHA_COMPOSITING_UNSTABLE_V1_SERVER_PROTOCOL_H
#define ALPHA_COMPOSITING_UNSTABLE_V1_SERVER_PROTOCOL_H
#include <stdint.h>
#include <stddef.h>
#include "wayland-server.h"
#ifdef __cplusplus
extern "C" {
#endif
struct wl_client;
struct wl_resource;
/**
* @page page_alpha_compositing_unstable_v1 The alpha_compositing_unstable_v1 protocol
* Protocol for more advanced compositing and blending
*
* @section page_desc_alpha_compositing_unstable_v1 Description
*
* This protocol specifies a set of interfaces used to control the alpha
* compositing and blending of contents.
*
* Warning! The protocol described in this file is experimental and backward
* incompatible changes may be made. Backward compatible changes may be added
* together with the corresponding interface version bump. Backward
* incompatible changes are done by bumping the version number in the protocol
* and interface names and resetting the interface version. Once the protocol
* is to be declared stable, the 'z' prefix and the version number in the
* protocol and interface names are removed and the interface version number is
* reset.
*
* @section page_ifaces_alpha_compositing_unstable_v1 Interfaces
* - @subpage page_iface_zcr_alpha_compositing_v1 - alpha_compositing
* - @subpage page_iface_zcr_blending_v1 - blending interface to a wl_surface
* @section page_copyright_alpha_compositing_unstable_v1 Copyright
* <pre>
*
* Copyright 2016 The Chromium Authors.
*
* 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.
* </pre>
*/
struct wl_surface;
struct zcr_alpha_compositing_v1;
struct zcr_blending_v1;
/**
* @page page_iface_zcr_alpha_compositing_v1 zcr_alpha_compositing_v1
* @section page_iface_zcr_alpha_compositing_v1_desc Description
*
* The global interface exposing compositing and blending capabilities is
* used to instantiate an interface extension for a wl_surface object.
* This extended interface will then allow the client to specify the
* blending equation and alpha value used for compositing the wl_surface.
* @section page_iface_zcr_alpha_compositing_v1_api API
* See @ref iface_zcr_alpha_compositing_v1.
*/
/**
* @defgroup iface_zcr_alpha_compositing_v1 The zcr_alpha_compositing_v1 interface
*
* The global interface exposing compositing and blending capabilities is
* used to instantiate an interface extension for a wl_surface object.
* This extended interface will then allow the client to specify the
* blending equation and alpha value used for compositing the wl_surface.
*/
extern const struct wl_interface zcr_alpha_compositing_v1_interface;
/**
* @page page_iface_zcr_blending_v1 zcr_blending_v1
* @section page_iface_zcr_blending_v1_desc Description
*
* An additional interface to a wl_surface object, which allows the
* client to specify the blending equation used for compositing and
* an alpha value applied to the whole surface.
*
* If the wl_surface associated with the bledning object is destroyed,
* the blending object becomes inert.
*
* If the blending object is destroyed, the blending state is removed
* from the wl_surface. The change will be applied on the next
* wl_surface.commit.
* @section page_iface_zcr_blending_v1_api API
* See @ref iface_zcr_blending_v1.
*/
/**
* @defgroup iface_zcr_blending_v1 The zcr_blending_v1 interface
*
* An additional interface to a wl_surface object, which allows the
* client to specify the blending equation used for compositing and
* an alpha value applied to the whole surface.
*
* If the wl_surface associated with the bledning object is destroyed,
* the blending object becomes inert.
*
* If the blending object is destroyed, the blending state is removed
* from the wl_surface. The change will be applied on the next
* wl_surface.commit.
*/
extern const struct wl_interface zcr_blending_v1_interface;
#ifndef ZCR_ALPHA_COMPOSITING_V1_ERROR_ENUM
#define ZCR_ALPHA_COMPOSITING_V1_ERROR_ENUM
enum zcr_alpha_compositing_v1_error {
/**
* the surface already has a blending object associated
*/
ZCR_ALPHA_COMPOSITING_V1_ERROR_BLENDING_EXISTS = 0,
};
#endif /* ZCR_ALPHA_COMPOSITING_V1_ERROR_ENUM */
/**
* @ingroup iface_zcr_alpha_compositing_v1
* @struct zcr_alpha_compositing_v1_interface
*/
struct zcr_alpha_compositing_v1_interface {
/**
* unbind from the blending interface
*
* Informs the server that the client will not be using this
* protocol object anymore. This does not affect any other objects,
* blending objects included.
*/
void (*destroy)(struct wl_client *client,
struct wl_resource *resource);
/**
* extend surface interface for blending
*
* Instantiate an interface extension for the given wl_surface to
* provide surface blending. If the given wl_surface already has a
* blending object associated, the blending_exists protocol error
* is raised.
* @param id the new blending interface id
* @param surface the surface
*/
void (*get_blending)(struct wl_client *client,
struct wl_resource *resource,
uint32_t id,
struct wl_resource *surface);
};
/**
* @ingroup iface_zcr_alpha_compositing_v1
*/
#define ZCR_ALPHA_COMPOSITING_V1_DESTROY_SINCE_VERSION 1
/**
* @ingroup iface_zcr_alpha_compositing_v1
*/
#define ZCR_ALPHA_COMPOSITING_V1_GET_BLENDING_SINCE_VERSION 1
#ifndef ZCR_BLENDING_V1_BLENDING_EQUATION_ENUM
#define ZCR_BLENDING_V1_BLENDING_EQUATION_ENUM
/**
* @ingroup iface_zcr_blending_v1
* different blending equations for compositing
*
* Blending equations that can be used when compositing a surface.
*/
enum zcr_blending_v1_blending_equation {
/**
* no blending
*/
ZCR_BLENDING_V1_BLENDING_EQUATION_NONE = 0,
/**
* one / one_minus_src_alpha
*/
ZCR_BLENDING_V1_BLENDING_EQUATION_PREMULT = 1,
/**
* src_alpha / one_minus_src_alpha
*/
ZCR_BLENDING_V1_BLENDING_EQUATION_COVERAGE = 2,
};
#endif /* ZCR_BLENDING_V1_BLENDING_EQUATION_ENUM */
/**
* @ingroup iface_zcr_blending_v1
* @struct zcr_blending_v1_interface
*/
struct zcr_blending_v1_interface {
/**
* remove blending from the surface
*
* The associated wl_surface's blending state is removed. The
* change is applied on the next wl_surface.commit.
*/
void (*destroy)(struct wl_client *client,
struct wl_resource *resource);
/**
* set the blending equation
*
* Set the blending equation for compositing the wl_surface. See
* wp_alpha_compositing for the description.
*
* The blending equation state is double-buffered state, and will
* be applied on the next wl_surface.commit.
* @param equation the new blending equation
*/
void (*set_blending)(struct wl_client *client,
struct wl_resource *resource,
uint32_t equation);
/**
* set the alpha value
*
* Set the alpha value applied to the whole surface for
* compositing. See wp_alpha_compositing for the description.
*
* The alpha value state is double-buffered state, and will be
* applied on the next wl_surface.commit.
* @param value the new alpha value
*/
void (*set_alpha)(struct wl_client *client,
struct wl_resource *resource,
wl_fixed_t value);
};
/**
* @ingroup iface_zcr_blending_v1
*/
#define ZCR_BLENDING_V1_DESTROY_SINCE_VERSION 1
/**
* @ingroup iface_zcr_blending_v1
*/
#define ZCR_BLENDING_V1_SET_BLENDING_SINCE_VERSION 1
/**
* @ingroup iface_zcr_blending_v1
*/
#define ZCR_BLENDING_V1_SET_ALPHA_SINCE_VERSION 1
#ifdef __cplusplus
}
#endif
#endif
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