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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/exo/wayland/wp_single_pixel_buffer.h"
#include <cstdint>
#include <memory>
#include "components/exo/buffer.h"
#include "components/exo/sub_surface.h"
#include "components/exo/sub_surface_observer.h"
#include "components/exo/surface.h"
#include "components/exo/surface_observer.h"
#include "components/exo/wayland/server_util.h"
#include "ui/gfx/geometry/rounded_corners_f.h"
#include "ui/gfx/geometry/rrect_f.h"
#include "ui/gfx/geometry/size.h"
namespace exo::wayland {
namespace {
////////////////////////////////////////////////////////////////////////////////
// wl_buffer_interface:
void buffer_destroy(wl_client* client, wl_resource* resource) {
wl_resource_destroy(resource);
}
const struct wl_buffer_interface buffer_implementation = {buffer_destroy};
////////////////////////////////////////////////////////////////////////////////
// single_pixel_buffer_interface:
void single_pixel_buffer_destroy_manager(wl_client* client,
wl_resource* resource) {
wl_resource_destroy(resource);
}
void HandleBufferReleaseCallback(wl_resource* resource) {
wl_buffer_send_release(resource);
wl_client_flush(wl_resource_get_client(resource));
}
void create_u32_rgba_buffer(wl_client* client,
wl_resource* resource,
uint32_t id,
uint32_t r,
uint32_t g,
uint32_t b,
uint32_t a) {
double dividor = UINT32_MAX;
// TODO: consider moving SolidColorBuffer to use premultiplied instead.
float alpha = static_cast<float>(a / dividor);
if (alpha != 0) {
dividor /= alpha;
}
SkColor4f color = {static_cast<float>(r / dividor),
static_cast<float>(g / dividor),
static_cast<float>(b / dividor), alpha};
std::unique_ptr<SolidColorBuffer> buffer =
std::make_unique<SolidColorBuffer>(color, gfx::Size(1, 1));
wl_resource* buffer_resource = wl_resource_create(
client, &wl_buffer_interface, wl_resource_get_version(resource), id);
buffer->set_release_callback(base::BindRepeating(
&HandleBufferReleaseCallback, base::Unretained(buffer_resource)));
SetImplementation(buffer_resource, &buffer_implementation, std::move(buffer));
}
const struct wp_single_pixel_buffer_manager_v1_interface
single_pixel_buffer_implementation = {single_pixel_buffer_destroy_manager,
create_u32_rgba_buffer};
} // namespace
void bind_single_pixel_buffer(wl_client* client,
void* data,
uint32_t version,
uint32_t id) {
wl_resource* resource =
wl_resource_create(client, &wp_single_pixel_buffer_manager_v1_interface,
std::min(version, kSinglePixelBufferVersion), id);
wl_resource_set_implementation(resource, &single_pixel_buffer_implementation,
data, nullptr);
}
} // namespace exo::wayland
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