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//
// Copyright 2022 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// WaylandWindow.cpp: Implementation of OSWindow for Wayland
#ifdef UNSAFE_BUFFERS_BUILD
# pragma allow_unsafe_buffers
#endif
#include "util/linux/wayland/WaylandWindow.h"
#include <cerrno>
#include <cstring>
WaylandWindow::WaylandWindow()
: mDisplay{nullptr}, mCompositor{nullptr}, mSurface{nullptr}, mWindow{nullptr}
{}
WaylandWindow::~WaylandWindow()
{
destroy();
}
void WaylandWindow::RegistryHandleGlobal(void *data,
struct wl_registry *registry,
uint32_t name,
const char *interface,
uint32_t version)
{
WaylandWindow *vc = reinterpret_cast<WaylandWindow *>(data);
if (strcmp(interface, "wl_compositor") == 0)
{
void *compositor = wl_registry_bind(registry, name, &wl_compositor_interface, 1);
vc->mCompositor = reinterpret_cast<wl_compositor *>(compositor);
}
}
void WaylandWindow::RegistryHandleGlobalRemove(void *data,
struct wl_registry *registry,
uint32_t name)
{}
const struct wl_registry_listener WaylandWindow::registryListener = {
WaylandWindow::RegistryHandleGlobal, WaylandWindow::RegistryHandleGlobalRemove};
bool WaylandWindow::initializeImpl(const std::string &name, int width, int height)
{
destroy();
if (!mDisplay)
{
mDisplay = wl_display_connect(nullptr);
if (!mDisplay)
{
return false;
}
}
// Not get a window
struct wl_registry *registry = wl_display_get_registry(mDisplay);
wl_registry_add_listener(registry, ®istryListener, this);
// Round-trip to get globals
wl_display_roundtrip(mDisplay);
if (!mCompositor)
{
return false;
}
// We don't need this anymore
wl_registry_destroy(registry);
mSurface = wl_compositor_create_surface(mCompositor);
if (!mSurface)
{
return false;
}
mWindow = wl_egl_window_create(mSurface, width, height);
if (!mWindow)
{
return false;
}
fds[0] = {wl_display_get_fd(mDisplay), POLLIN, 0};
mY = 0;
mX = 0;
mWidth = width;
mHeight = height;
return true;
}
void WaylandWindow::disableErrorMessageDialog() {}
void WaylandWindow::destroy()
{
if (mWindow)
{
wl_egl_window_destroy(mWindow);
mWindow = nullptr;
}
if (mSurface)
{
wl_surface_destroy(mSurface);
mSurface = nullptr;
}
if (mCompositor)
{
wl_compositor_destroy(mCompositor);
mCompositor = nullptr;
}
}
void WaylandWindow::resetNativeWindow() {}
void WaylandWindow::setNativeDisplay(EGLNativeDisplayType display)
{
mDisplay = reinterpret_cast<wl_display *>(display);
}
EGLNativeWindowType WaylandWindow::getNativeWindow() const
{
return reinterpret_cast<EGLNativeWindowType>(mWindow);
}
EGLNativeDisplayType WaylandWindow::getNativeDisplay() const
{
return reinterpret_cast<EGLNativeDisplayType>(mDisplay);
}
void WaylandWindow::messageLoop()
{
while (wl_display_prepare_read(mDisplay) != 0)
wl_display_dispatch_pending(mDisplay);
if (wl_display_flush(mDisplay) < 0 && errno != EAGAIN)
{
wl_display_cancel_read(mDisplay);
return;
}
if (poll(fds, 1, 0) > 0)
{
wl_display_read_events(mDisplay);
wl_display_dispatch_pending(mDisplay);
}
else
{
wl_display_cancel_read(mDisplay);
}
}
void WaylandWindow::setMousePosition(int x, int y) {}
bool WaylandWindow::setOrientation(int width, int height)
{
return true;
}
bool WaylandWindow::setPosition(int x, int y)
{
return true;
}
bool WaylandWindow::resize(int width, int height)
{
wl_egl_window_resize(mWindow, width, height, 0, 0);
mWidth = width;
mHeight = height;
return true;
}
void WaylandWindow::setVisible(bool isVisible) {}
void WaylandWindow::signalTestEvent() {}
bool IsWaylandWindowAvailable()
{
wl_display *display = wl_display_connect(nullptr);
if (!display)
{
return false;
}
wl_display_disconnect(display);
return true;
}
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