//========================================================================
// GLFW 3.3 Wayland - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2014 Jonas Ådahl <jadahl@gmail.com>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//    claim that you wrote the original software. If you use this software
//    in a product, an acknowledgment in the product documentation would
//    be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
//    be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
//    distribution.
//
//========================================================================

#ifndef _glfw3_wayland_platform_h_
#define _glfw3_wayland_platform_h_

#include <wayland-client.h>
#include <xkbcommon/xkbcommon.h>
#include <xkbcommon/xkbcommon-compose.h>
#include <dlfcn.h>

typedef VkFlags VkWaylandSurfaceCreateFlagsKHR;

typedef struct VkWaylandSurfaceCreateInfoKHR
{
    VkStructureType                 sType;
    const void*                     pNext;
    VkWaylandSurfaceCreateFlagsKHR  flags;
    struct wl_display*              display;
    struct wl_surface*              surface;
} VkWaylandSurfaceCreateInfoKHR;

typedef VkResult (APIENTRY *PFN_vkCreateWaylandSurfaceKHR)(VkInstance,const VkWaylandSurfaceCreateInfoKHR*,const VkAllocationCallbacks*,VkSurfaceKHR*);
typedef VkBool32 (APIENTRY *PFN_vkGetPhysicalDeviceWaylandPresentationSupportKHR)(VkPhysicalDevice,uint32_t,struct wl_display*);

#include "posix_tls.h"
#include "posix_time.h"
#include "linux_joystick.h"
#include "xkb_unicode.h"
#include "egl_context.h"

#include "wayland-relative-pointer-unstable-v1-client-protocol.h"
#include "wayland-pointer-constraints-unstable-v1-client-protocol.h"

#define _glfw_dlopen(name) dlopen(name, RTLD_LAZY | RTLD_LOCAL)
#define _glfw_dlclose(handle) dlclose(handle)
#define _glfw_dlsym(handle, name) dlsym(handle, name)

#define _GLFW_EGL_NATIVE_WINDOW         ((EGLNativeWindowType) window->wl.native)
#define _GLFW_EGL_NATIVE_DISPLAY        ((EGLNativeDisplayType) _glfw.wl.display)

#define _GLFW_PLATFORM_WINDOW_STATE         _GLFWwindowWayland  wl
#define _GLFW_PLATFORM_LIBRARY_WINDOW_STATE _GLFWlibraryWayland wl
#define _GLFW_PLATFORM_MONITOR_STATE        _GLFWmonitorWayland wl
#define _GLFW_PLATFORM_CURSOR_STATE         _GLFWcursorWayland  wl

#define _GLFW_PLATFORM_CONTEXT_STATE
#define _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE


// Wayland-specific per-window data
//
typedef struct _GLFWwindowWayland
{
    int                         width, height;
    GLFWbool                    visible;
    GLFWbool                    maximized;
    struct wl_surface*          surface;
    struct wl_egl_window*       native;
    struct wl_shell_surface*    shellSurface;
    struct wl_callback*         callback;

    _GLFWcursor*                currentCursor;
    double                      cursorPosX, cursorPosY;

    char*                       title;

    // We need to track the monitors the window spans on to calculate the
    // optimal scaling factor.
    int                         scale;
    _GLFWmonitor**              monitors;
    int                         monitorsCount;
    int                         monitorsSize;

    struct {
        struct zwp_relative_pointer_v1*    relativePointer;
        struct zwp_locked_pointer_v1*      lockedPointer;
    } pointerLock;
} _GLFWwindowWayland;

// Wayland-specific global data
//
typedef struct _GLFWlibraryWayland
{
    struct wl_display*          display;
    struct wl_registry*         registry;
    struct wl_compositor*       compositor;
    struct wl_shell*            shell;
    struct wl_shm*              shm;
    struct wl_seat*             seat;
    struct wl_pointer*          pointer;
    struct wl_keyboard*         keyboard;
    struct zwp_relative_pointer_manager_v1* relativePointerManager;
    struct zwp_pointer_constraints_v1*      pointerConstraints;

    int                         compositorVersion;

    struct wl_cursor_theme*     cursorTheme;
    struct wl_surface*          cursorSurface;
    uint32_t                    pointerSerial;

    short int                   keycodes[256];
    short int                   scancodes[GLFW_KEY_LAST + 1];

    struct {
        struct xkb_context*     context;
        struct xkb_keymap*      keymap;
        struct xkb_state*       state;
        struct xkb_compose_state* composeState;
        xkb_mod_mask_t          controlMask;
        xkb_mod_mask_t          altMask;
        xkb_mod_mask_t          shiftMask;
        xkb_mod_mask_t          superMask;
        unsigned int            modifiers;
    } xkb;

    _GLFWwindow*                pointerFocus;
    _GLFWwindow*                keyboardFocus;

} _GLFWlibraryWayland;

// Wayland-specific per-monitor data
//
typedef struct _GLFWmonitorWayland
{
    struct wl_output*           output;
    int                         currentMode;

    int                         x;
    int                         y;
    int                         scale;

} _GLFWmonitorWayland;

// Wayland-specific per-cursor data
//
typedef struct _GLFWcursorWayland
{
    struct wl_cursor_image*     image;
    struct wl_buffer*           buffer;
    int                         width, height;
    int                         xhot, yhot;
} _GLFWcursorWayland;


void _glfwAddOutputWayland(uint32_t name, uint32_t version);

#endif // _glfw3_wayland_platform_h_