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SDL_waylandvideo.c
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SDL_waylandvideo.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
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.
*/
#include "SDL_internal.h"
#ifdef SDL_VIDEO_DRIVER_WAYLAND
#include "../../core/linux/SDL_system_theme.h"
#include "../../events/SDL_events_c.h"
#include "SDL_waylandclipboard.h"
#include "SDL_waylandevents_c.h"
#include "SDL_waylandkeyboard.h"
#include "SDL_waylandmessagebox.h"
#include "SDL_waylandmouse.h"
#include "SDL_waylandopengles.h"
#include "SDL_waylandvideo.h"
#include "SDL_waylandvulkan.h"
#include "SDL_waylandwindow.h"
#include <fcntl.h>
#include <sys/types.h>
#include <unistd.h>
#include <xkbcommon/xkbcommon.h>
#include <wayland-util.h>
#include "alpha-modifier-v1-client-protocol.h"
#include "cursor-shape-v1-client-protocol.h"
#include "fractional-scale-v1-client-protocol.h"
#include "frog-color-management-v1-client-protocol.h"
#include "idle-inhibit-unstable-v1-client-protocol.h"
#include "input-timestamps-unstable-v1-client-protocol.h"
#include "kde-output-order-v1-client-protocol.h"
#include "keyboard-shortcuts-inhibit-unstable-v1-client-protocol.h"
#include "pointer-constraints-unstable-v1-client-protocol.h"
#include "primary-selection-unstable-v1-client-protocol.h"
#include "relative-pointer-unstable-v1-client-protocol.h"
#include "tablet-v2-client-protocol.h"
#include "text-input-unstable-v3-client-protocol.h"
#include "viewporter-client-protocol.h"
#include "xdg-activation-v1-client-protocol.h"
#include "xdg-decoration-unstable-v1-client-protocol.h"
#include "xdg-dialog-v1-client-protocol.h"
#include "xdg-foreign-unstable-v2-client-protocol.h"
#include "xdg-output-unstable-v1-client-protocol.h"
#include "xdg-shell-client-protocol.h"
#ifdef HAVE_LIBDECOR_H
#include <libdecor.h>
#endif
#define WAYLANDVID_DRIVER_NAME "wayland"
/* Clamp certain core protocol versions on older versions of libwayland. */
#if SDL_WAYLAND_CHECK_VERSION(1, 22, 0)
#define SDL_WL_COMPOSITOR_VERSION 6
#else
#define SDL_WL_COMPOSITOR_VERSION 4
#endif
#if SDL_WAYLAND_CHECK_VERSION(1, 22, 0)
#define SDL_WL_SEAT_VERSION 9
#elif SDL_WAYLAND_CHECK_VERSION(1, 21, 0)
#define SDL_WL_SEAT_VERSION 8
#else
#define SDL_WL_SEAT_VERSION 5
#endif
#if SDL_WAYLAND_CHECK_VERSION(1, 20, 0)
#define SDL_WL_OUTPUT_VERSION 4
#else
#define SDL_WL_OUTPUT_VERSION 3
#endif
#ifdef SDL_USE_LIBDBUS
#include "../../core/linux/SDL_dbus.h"
#define DISPLAY_INFO_NODE "org.gnome.Mutter.DisplayConfig"
#define DISPLAY_INFO_PATH "/org/gnome/Mutter/DisplayConfig"
#define DISPLAY_INFO_METHOD "GetCurrentState"
#endif
/* GNOME doesn't expose displays in any particular order, but we can find the
* primary display and its logical coordinates via a DBus method.
*/
static SDL_bool Wayland_GetGNOMEPrimaryDisplayCoordinates(int *x, int *y)
{
#ifdef SDL_USE_LIBDBUS
SDL_DBusContext *dbus = SDL_DBus_GetContext();
if (dbus == NULL) {
return SDL_FALSE;
}
DBusMessage *reply = NULL;
DBusMessageIter iter[3];
DBusMessage *msg = dbus->message_new_method_call(DISPLAY_INFO_NODE,
DISPLAY_INFO_PATH,
DISPLAY_INFO_NODE,
DISPLAY_INFO_METHOD);
if (msg) {
reply = dbus->connection_send_with_reply_and_block(dbus->session_conn, msg, DBUS_TIMEOUT_USE_DEFAULT, NULL);
dbus->message_unref(msg);
}
if (reply) {
/* Serial (don't care) */
dbus->message_iter_init(reply, &iter[0]);
if (dbus->message_iter_get_arg_type(&iter[0]) != DBUS_TYPE_UINT32) {
goto error;
}
/* Physical monitor array (don't care) */
dbus->message_iter_next(&iter[0]);
if (dbus->message_iter_get_arg_type(&iter[0]) != DBUS_TYPE_ARRAY) {
goto error;
}
/* Logical monitor array of structs */
dbus->message_iter_next(&iter[0]);
if (dbus->message_iter_get_arg_type(&iter[0]) != DBUS_TYPE_ARRAY) {
goto error;
}
/* First logical monitor struct */
dbus->message_iter_recurse(&iter[0], &iter[1]);
if (dbus->message_iter_get_arg_type(&iter[1]) != DBUS_TYPE_STRUCT) {
goto error;
}
do {
int logical_x, logical_y;
dbus_bool_t primary;
/* Logical X */
dbus->message_iter_recurse(&iter[1], &iter[2]);
if (dbus->message_iter_get_arg_type(&iter[2]) != DBUS_TYPE_INT32) {
goto error;
}
dbus->message_iter_get_basic(&iter[2], &logical_x);
/* Logical Y */
dbus->message_iter_next(&iter[2]);
if (dbus->message_iter_get_arg_type(&iter[2]) != DBUS_TYPE_INT32) {
goto error;
}
dbus->message_iter_get_basic(&iter[2], &logical_y);
/* Scale (don't care) */
dbus->message_iter_next(&iter[2]);
if (dbus->message_iter_get_arg_type(&iter[2]) != DBUS_TYPE_DOUBLE) {
goto error;
}
/* Transform (don't care) */
dbus->message_iter_next(&iter[2]);
if (dbus->message_iter_get_arg_type(&iter[2]) != DBUS_TYPE_UINT32) {
goto error;
}
/* Primary display boolean */
dbus->message_iter_next(&iter[2]);
if (dbus->message_iter_get_arg_type(&iter[2]) != DBUS_TYPE_BOOLEAN) {
goto error;
}
dbus->message_iter_get_basic(&iter[2], &primary);
if (primary) {
*x = logical_x;
*y = logical_y;
/* We found the primary display: success. */
dbus->message_unref(reply);
return SDL_TRUE;
}
} while (dbus->message_iter_next(&iter[1]));
}
error:
if (reply) {
dbus->message_unref(reply);
}
#endif
return SDL_FALSE;
}
static void Wayland_FlushOutputOrder(SDL_VideoData *vid)
{
SDL_WaylandConnectorName *c, *tmp;
wl_list_for_each_safe (c, tmp, &vid->output_order, link) {
WAYLAND_wl_list_remove(&c->link);
SDL_free(c);
}
vid->output_order_finalized = SDL_FALSE;
}
/* The order of wl_output displays exposed by KDE doesn't correspond to any priority, but KDE does provide a protocol
* that tells clients the preferred order or all connected displays via an ordered list of connector name strings.
*/
static void handle_kde_output_order_output(void *data, struct kde_output_order_v1 *kde_output_order_v1, const char *output_name)
{
SDL_VideoData *vid = (SDL_VideoData *)data;
/* Starting a new list, flush the old. */
if (vid->output_order_finalized) {
Wayland_FlushOutputOrder(vid);
}
const int len = SDL_strlen(output_name) + 1;
SDL_WaylandConnectorName *node = SDL_malloc(sizeof(SDL_WaylandConnectorName) + len);
SDL_strlcpy(node->wl_output_name, output_name, len);
WAYLAND_wl_list_insert(vid->output_order.prev, &node->link);
}
static void handle_kde_output_order_done(void *data, struct kde_output_order_v1 *kde_output_order_v1)
{
SDL_VideoData *vid = (SDL_VideoData *)data;
vid->output_order_finalized = SDL_TRUE;
}
static const struct kde_output_order_v1_listener kde_output_order_listener = {
handle_kde_output_order_output,
handle_kde_output_order_done
};
static void Wayland_SortOutputs(SDL_VideoData *vid)
{
SDL_DisplayData *d;
int p_x, p_y;
/* KDE provides the kde-output-order-v1 protocol, which gives us the full preferred display
* ordering in the form of a list of wl_output.name strings (connector names).
*/
if (!WAYLAND_wl_list_empty(&vid->output_order)) {
struct wl_list sorted_list;
SDL_WaylandConnectorName *c;
/* Sort the outputs by connector name. */
WAYLAND_wl_list_init(&sorted_list);
wl_list_for_each (c, &vid->output_order, link) {
wl_list_for_each (d, &vid->output_list, link) {
if (d->wl_output_name && SDL_strcmp(c->wl_output_name, d->wl_output_name) == 0) {
/* Remove from the current list and Append the next node to the end of the new list. */
WAYLAND_wl_list_remove(&d->link);
WAYLAND_wl_list_insert(sorted_list.prev, &d->link);
break;
}
}
}
if (!WAYLAND_wl_list_empty(&vid->output_list)) {
/* If any displays were omitted during the sort, append them to the new list.
* This shouldn't happen, but better safe than sorry.
*/
WAYLAND_wl_list_insert_list(sorted_list.prev, &vid->output_list);
}
/* Set the output list to the sorted list. */
WAYLAND_wl_list_init(&vid->output_list);
WAYLAND_wl_list_insert_list(&vid->output_list, &sorted_list);
} else if (Wayland_GetGNOMEPrimaryDisplayCoordinates(&p_x, &p_y)) {
/* GNOME doesn't expose the displays in any preferential order, so find the primary display coordinates and use them
* to manually sort the primary display to the front of the list so that it is always the first exposed by SDL.
* Otherwise, assume that the displays were already exposed in preferential order.
*/
wl_list_for_each (d, &vid->output_list, link) {
if (d->x == p_x && d->y == p_y) {
WAYLAND_wl_list_remove(&d->link);
WAYLAND_wl_list_insert(&vid->output_list, &d->link);
break;
}
}
}
}
static void display_handle_done(void *data, struct wl_output *output);
/* Initialization/Query functions */
static int Wayland_VideoInit(SDL_VideoDevice *_this);
static int Wayland_GetDisplayBounds(SDL_VideoDevice *_this, SDL_VideoDisplay *display, SDL_Rect *rect);
static void Wayland_VideoQuit(SDL_VideoDevice *_this);
static const char *SDL_WAYLAND_surface_tag = "sdl-window";
static const char *SDL_WAYLAND_output_tag = "sdl-output";
void SDL_WAYLAND_register_surface(struct wl_surface *surface)
{
wl_proxy_set_tag((struct wl_proxy *)surface, &SDL_WAYLAND_surface_tag);
}
void SDL_WAYLAND_register_output(struct wl_output *output)
{
wl_proxy_set_tag((struct wl_proxy *)output, &SDL_WAYLAND_output_tag);
}
SDL_bool SDL_WAYLAND_own_surface(struct wl_surface *surface)
{
return wl_proxy_get_tag((struct wl_proxy *)surface) == &SDL_WAYLAND_surface_tag;
}
SDL_bool SDL_WAYLAND_own_output(struct wl_output *output)
{
return wl_proxy_get_tag((struct wl_proxy *)output) == &SDL_WAYLAND_output_tag;
}
/* External surfaces may have their own user data attached, the modification of which
* can cause problems with external toolkits. Instead, external windows are kept in
* their own list, and a search is conducted to find a matching surface.
*/
static struct wl_list external_window_list;
void Wayland_AddWindowDataToExternalList(SDL_WindowData *data)
{
WAYLAND_wl_list_insert(&external_window_list, &data->external_window_list_link);
}
void Wayland_RemoveWindowDataFromExternalList(SDL_WindowData *data)
{
WAYLAND_wl_list_remove(&data->external_window_list_link);
}
SDL_WindowData *Wayland_GetWindowDataForOwnedSurface(struct wl_surface *surface)
{
if (SDL_WAYLAND_own_surface(surface)) {
return (SDL_WindowData *)wl_surface_get_user_data(surface);
} else if (!WAYLAND_wl_list_empty(&external_window_list)) {
SDL_WindowData *p;
wl_list_for_each (p, &external_window_list, external_window_list_link) {
if (p->surface == surface) {
return p;
}
}
}
return NULL;
}
static void Wayland_DeleteDevice(SDL_VideoDevice *device)
{
SDL_VideoData *data = device->driverdata;
if (data->display && !data->display_externally_owned) {
WAYLAND_wl_display_flush(data->display);
WAYLAND_wl_display_disconnect(data->display);
SDL_ClearProperty(SDL_GetGlobalProperties(), SDL_PROP_GLOBAL_VIDEO_WAYLAND_WL_DISPLAY_POINTER);
}
if (device->wakeup_lock) {
SDL_DestroyMutex(device->wakeup_lock);
}
SDL_free(data);
SDL_free(device);
SDL_WAYLAND_UnloadSymbols();
}
static SDL_VideoDevice *Wayland_CreateDevice(void)
{
SDL_VideoDevice *device;
SDL_VideoData *data;
struct SDL_WaylandInput *input;
struct wl_display *display = SDL_GetPointerProperty(SDL_GetGlobalProperties(),
SDL_PROP_GLOBAL_VIDEO_WAYLAND_WL_DISPLAY_POINTER, NULL);
SDL_bool display_is_external = !!display;
/* Are we trying to connect to or are currently in a Wayland session? */
if (!SDL_getenv("WAYLAND_DISPLAY")) {
const char *session = SDL_getenv("XDG_SESSION_TYPE");
if (session && SDL_strcasecmp(session, "wayland") != 0) {
return NULL;
}
}
if (!SDL_WAYLAND_LoadSymbols()) {
return NULL;
}
if (!display) {
display = WAYLAND_wl_display_connect(NULL);
if (!display) {
SDL_WAYLAND_UnloadSymbols();
return NULL;
}
}
data = SDL_calloc(1, sizeof(*data));
if (!data) {
WAYLAND_wl_display_disconnect(display);
SDL_WAYLAND_UnloadSymbols();
return NULL;
}
input = SDL_calloc(1, sizeof(*input));
if (!input) {
SDL_free(data);
WAYLAND_wl_display_disconnect(display);
SDL_WAYLAND_UnloadSymbols();
return NULL;
}
input->display = data;
input->sx_w = wl_fixed_from_int(0);
input->sy_w = wl_fixed_from_int(0);
input->xkb.current_group = XKB_GROUP_INVALID;
data->initializing = SDL_TRUE;
data->display = display;
data->input = input;
data->display_externally_owned = display_is_external;
data->scale_to_display_enabled = SDL_GetHintBoolean(SDL_HINT_VIDEO_WAYLAND_SCALE_TO_DISPLAY, SDL_FALSE);
WAYLAND_wl_list_init(&data->output_list);
WAYLAND_wl_list_init(&data->output_order);
WAYLAND_wl_list_init(&external_window_list);
/* Initialize all variables that we clean on shutdown */
device = SDL_calloc(1, sizeof(SDL_VideoDevice));
if (!device) {
SDL_free(input);
SDL_free(data);
WAYLAND_wl_display_disconnect(display);
SDL_WAYLAND_UnloadSymbols();
return NULL;
}
if (!display_is_external) {
SDL_SetPointerProperty(SDL_GetGlobalProperties(),
SDL_PROP_GLOBAL_VIDEO_WAYLAND_WL_DISPLAY_POINTER, display);
}
device->driverdata = data;
device->wakeup_lock = SDL_CreateMutex();
/* Set the function pointers */
device->VideoInit = Wayland_VideoInit;
device->VideoQuit = Wayland_VideoQuit;
device->GetDisplayBounds = Wayland_GetDisplayBounds;
device->SuspendScreenSaver = Wayland_SuspendScreenSaver;
device->PumpEvents = Wayland_PumpEvents;
device->WaitEventTimeout = Wayland_WaitEventTimeout;
device->SendWakeupEvent = Wayland_SendWakeupEvent;
#ifdef SDL_VIDEO_OPENGL_EGL
device->GL_SwapWindow = Wayland_GLES_SwapWindow;
device->GL_GetSwapInterval = Wayland_GLES_GetSwapInterval;
device->GL_SetSwapInterval = Wayland_GLES_SetSwapInterval;
device->GL_MakeCurrent = Wayland_GLES_MakeCurrent;
device->GL_CreateContext = Wayland_GLES_CreateContext;
device->GL_LoadLibrary = Wayland_GLES_LoadLibrary;
device->GL_UnloadLibrary = Wayland_GLES_UnloadLibrary;
device->GL_GetProcAddress = Wayland_GLES_GetProcAddress;
device->GL_DeleteContext = Wayland_GLES_DeleteContext;
device->GL_GetEGLSurface = Wayland_GLES_GetEGLSurface;
#endif
device->CreateSDLWindow = Wayland_CreateWindow;
device->ShowWindow = Wayland_ShowWindow;
device->HideWindow = Wayland_HideWindow;
device->RaiseWindow = Wayland_RaiseWindow;
device->SetWindowFullscreen = Wayland_SetWindowFullscreen;
device->MaximizeWindow = Wayland_MaximizeWindow;
device->MinimizeWindow = Wayland_MinimizeWindow;
device->SetWindowMouseRect = Wayland_SetWindowMouseRect;
device->SetWindowMouseGrab = Wayland_SetWindowMouseGrab;
device->SetWindowKeyboardGrab = Wayland_SetWindowKeyboardGrab;
device->RestoreWindow = Wayland_RestoreWindow;
device->SetWindowBordered = Wayland_SetWindowBordered;
device->SetWindowResizable = Wayland_SetWindowResizable;
device->SetWindowPosition = Wayland_SetWindowPosition;
device->SetWindowSize = Wayland_SetWindowSize;
device->SetWindowMinimumSize = Wayland_SetWindowMinimumSize;
device->SetWindowMaximumSize = Wayland_SetWindowMaximumSize;
device->SetWindowModalFor = Wayland_SetWindowModalFor;
device->SetWindowOpacity = Wayland_SetWindowOpacity;
device->SetWindowTitle = Wayland_SetWindowTitle;
device->GetWindowSizeInPixels = Wayland_GetWindowSizeInPixels;
device->GetDisplayForWindow = Wayland_GetDisplayForWindow;
device->DestroyWindow = Wayland_DestroyWindow;
device->SetWindowHitTest = Wayland_SetWindowHitTest;
device->FlashWindow = Wayland_FlashWindow;
device->HasScreenKeyboardSupport = Wayland_HasScreenKeyboardSupport;
device->ShowWindowSystemMenu = Wayland_ShowWindowSystemMenu;
device->SyncWindow = Wayland_SyncWindow;
#ifdef SDL_USE_LIBDBUS
if (SDL_SystemTheme_Init())
device->system_theme = SDL_SystemTheme_Get();
#endif
device->GetTextMimeTypes = Wayland_GetTextMimeTypes;
device->SetClipboardData = Wayland_SetClipboardData;
device->GetClipboardData = Wayland_GetClipboardData;
device->HasClipboardData = Wayland_HasClipboardData;
device->StartTextInput = Wayland_StartTextInput;
device->StopTextInput = Wayland_StopTextInput;
device->UpdateTextInputArea = Wayland_UpdateTextInputArea;
#ifdef SDL_VIDEO_VULKAN
device->Vulkan_LoadLibrary = Wayland_Vulkan_LoadLibrary;
device->Vulkan_UnloadLibrary = Wayland_Vulkan_UnloadLibrary;
device->Vulkan_GetInstanceExtensions = Wayland_Vulkan_GetInstanceExtensions;
device->Vulkan_CreateSurface = Wayland_Vulkan_CreateSurface;
device->Vulkan_DestroySurface = Wayland_Vulkan_DestroySurface;
device->Vulkan_GetPresentationSupport = Wayland_Vulkan_GetPresentationSupport;
#endif
device->free = Wayland_DeleteDevice;
device->device_caps = VIDEO_DEVICE_CAPS_MODE_SWITCHING_EMULATED |
VIDEO_DEVICE_CAPS_HAS_POPUP_WINDOW_SUPPORT |
VIDEO_DEVICE_CAPS_SENDS_FULLSCREEN_DIMENSIONS |
VIDEO_DEVICE_CAPS_SENDS_DISPLAY_CHANGES |
VIDEO_DEVICE_CAPS_DISABLE_MOUSE_WARP_ON_FULLSCREEN_TRANSITIONS |
VIDEO_DEVICE_CAPS_SENDS_HDR_CHANGES;
return device;
}
VideoBootStrap Wayland_bootstrap = {
WAYLANDVID_DRIVER_NAME, "SDL Wayland video driver",
Wayland_CreateDevice,
Wayland_ShowMessageBox
};
static void xdg_output_handle_logical_position(void *data, struct zxdg_output_v1 *xdg_output,
int32_t x, int32_t y)
{
SDL_DisplayData *driverdata = (SDL_DisplayData *)data;
driverdata->x = x;
driverdata->y = y;
driverdata->has_logical_position = SDL_TRUE;
}
static void xdg_output_handle_logical_size(void *data, struct zxdg_output_v1 *xdg_output,
int32_t width, int32_t height)
{
SDL_DisplayData *driverdata = (SDL_DisplayData *)data;
driverdata->screen_width = width;
driverdata->screen_height = height;
driverdata->has_logical_size = SDL_TRUE;
}
static void xdg_output_handle_done(void *data, struct zxdg_output_v1 *xdg_output)
{
SDL_DisplayData *driverdata = (void *)data;
/*
* xdg-output.done events are deprecated and only apply below version 3 of the protocol.
* A wl-output.done event will be emitted in version 3 or higher.
*/
if (zxdg_output_v1_get_version(driverdata->xdg_output) < 3) {
display_handle_done(data, driverdata->output);
}
}
static void xdg_output_handle_name(void *data, struct zxdg_output_v1 *xdg_output,
const char *name)
{
SDL_DisplayData *driverdata = (SDL_DisplayData *)data;
/* Deprecated as of wl_output v4. */
if (wl_output_get_version(driverdata->output) < WL_OUTPUT_NAME_SINCE_VERSION &&
driverdata->display == 0) {
SDL_free(driverdata->wl_output_name);
driverdata->wl_output_name = SDL_strdup(name);
}
}
static void xdg_output_handle_description(void *data, struct zxdg_output_v1 *xdg_output,
const char *description)
{
SDL_DisplayData *driverdata = (SDL_DisplayData *)data;
/* Deprecated as of wl_output v4. */
if (wl_output_get_version(driverdata->output) < WL_OUTPUT_DESCRIPTION_SINCE_VERSION &&
driverdata->display == 0) {
/* xdg-output descriptions, if available, supersede wl-output model names. */
SDL_free(driverdata->placeholder.name);
driverdata->placeholder.name = SDL_strdup(description);
}
}
static const struct zxdg_output_v1_listener xdg_output_listener = {
xdg_output_handle_logical_position,
xdg_output_handle_logical_size,
xdg_output_handle_done,
xdg_output_handle_name,
xdg_output_handle_description,
};
static void AddEmulatedModes(SDL_DisplayData *dispdata, int native_width, int native_height)
{
struct EmulatedMode
{
int w;
int h;
};
/* Resolution lists courtesy of XWayland */
const struct EmulatedMode mode_list[] = {
/* 16:9 (1.77) */
{ 7680, 4320 },
{ 6144, 3160 },
{ 5120, 2880 },
{ 4096, 2304 },
{ 3840, 2160 },
{ 3200, 1800 },
{ 2880, 1620 },
{ 2560, 1440 },
{ 2048, 1152 },
{ 1920, 1080 },
{ 1600, 900 },
{ 1368, 768 },
{ 1280, 720 },
{ 864, 486 },
/* 16:10 (1.6) */
{ 2560, 1600 },
{ 1920, 1200 },
{ 1680, 1050 },
{ 1440, 900 },
{ 1280, 800 },
/* 3:2 (1.5) */
{ 720, 480 },
/* 4:3 (1.33) */
{ 2048, 1536 },
{ 1920, 1440 },
{ 1600, 1200 },
{ 1440, 1080 },
{ 1400, 1050 },
{ 1280, 1024 },
{ 1280, 960 },
{ 1152, 864 },
{ 1024, 768 },
{ 800, 600 },
{ 640, 480 }
};
int i;
SDL_DisplayMode mode;
SDL_VideoDisplay *dpy = dispdata->display ? SDL_GetVideoDisplay(dispdata->display) : &dispdata->placeholder;
const SDL_bool rot_90 = native_width < native_height; /* Reverse width/height for portrait displays. */
for (i = 0; i < SDL_arraysize(mode_list); ++i) {
SDL_zero(mode);
mode.format = dpy->desktop_mode.format;
mode.refresh_rate_numerator = dpy->desktop_mode.refresh_rate_numerator;
mode.refresh_rate_denominator = dpy->desktop_mode.refresh_rate_denominator;
if (rot_90) {
mode.w = mode_list[i].h;
mode.h = mode_list[i].w;
} else {
mode.w = mode_list[i].w;
mode.h = mode_list[i].h;
}
/* Only add modes that are smaller than the native mode. */
if ((mode.w < native_width && mode.h < native_height) ||
(mode.w < native_width && mode.h == native_height) ||
(mode.w == native_width && mode.h < native_height)) {
SDL_AddFullscreenDisplayMode(dpy, &mode);
}
}
}
static void display_handle_geometry(void *data,
struct wl_output *output,
int x, int y,
int physical_width,
int physical_height,
int subpixel,
const char *make,
const char *model,
int transform)
{
SDL_DisplayData *driverdata = (SDL_DisplayData *)data;
/* Apply the change from wl-output only if xdg-output is not supported */
if (!driverdata->has_logical_position) {
driverdata->x = x;
driverdata->y = y;
}
driverdata->physical_width = physical_width;
driverdata->physical_height = physical_height;
/* The model is only used for the output name if wl_output or xdg-output haven't provided a description. */
if (driverdata->display == 0 && !driverdata->placeholder.name) {
driverdata->placeholder.name = SDL_strdup(model);
}
driverdata->transform = transform;
#define TF_CASE(in, out) \
case WL_OUTPUT_TRANSFORM_##in: \
driverdata->orientation = SDL_ORIENTATION_##out; \
break;
if (driverdata->physical_width >= driverdata->physical_height) {
switch (transform) {
TF_CASE(NORMAL, LANDSCAPE)
TF_CASE(90, PORTRAIT)
TF_CASE(180, LANDSCAPE_FLIPPED)
TF_CASE(270, PORTRAIT_FLIPPED)
TF_CASE(FLIPPED, LANDSCAPE_FLIPPED)
TF_CASE(FLIPPED_90, PORTRAIT_FLIPPED)
TF_CASE(FLIPPED_180, LANDSCAPE)
TF_CASE(FLIPPED_270, PORTRAIT)
}
} else {
switch (transform) {
TF_CASE(NORMAL, PORTRAIT)
TF_CASE(90, LANDSCAPE)
TF_CASE(180, PORTRAIT_FLIPPED)
TF_CASE(270, LANDSCAPE_FLIPPED)
TF_CASE(FLIPPED, PORTRAIT_FLIPPED)
TF_CASE(FLIPPED_90, LANDSCAPE_FLIPPED)
TF_CASE(FLIPPED_180, PORTRAIT)
TF_CASE(FLIPPED_270, LANDSCAPE)
}
}
#undef TF_CASE
}
static void display_handle_mode(void *data,
struct wl_output *output,
uint32_t flags,
int width,
int height,
int refresh)
{
SDL_DisplayData *driverdata = (SDL_DisplayData *)data;
if (flags & WL_OUTPUT_MODE_CURRENT) {
driverdata->pixel_width = width;
driverdata->pixel_height = height;
/*
* Don't rotate this yet, wl-output coordinates are transformed in
* handle_done and xdg-output coordinates are pre-transformed.
*/
if (!driverdata->has_logical_size) {
driverdata->screen_width = width;
driverdata->screen_height = height;
}
driverdata->refresh = refresh;
}
}
static void display_handle_done(void *data,
struct wl_output *output)
{
const SDL_bool mode_emulation_enabled = SDL_GetHintBoolean(SDL_HINT_VIDEO_WAYLAND_MODE_EMULATION, SDL_TRUE);
SDL_DisplayData *driverdata = (SDL_DisplayData *)data;
SDL_VideoData *video = driverdata->videodata;
SDL_DisplayMode native_mode, desktop_mode;
SDL_VideoDisplay *dpy;
/*
* When using xdg-output, two wl-output.done events will be emitted:
* one at the completion of wl-display and one at the completion of xdg-output.
*
* All required events must be received before proceeding.
*/
const int event_await_count = 1 + (driverdata->xdg_output != NULL);
driverdata->wl_output_done_count = SDL_min(driverdata->wl_output_done_count + 1, event_await_count + 1);
if (driverdata->wl_output_done_count < event_await_count) {
return;
}
/* If the display was already created, reset and rebuild the mode list. */
dpy = SDL_GetVideoDisplay(driverdata->display);
if (dpy) {
SDL_ResetFullscreenDisplayModes(dpy);
}
/* The native display resolution */
SDL_zero(native_mode);
native_mode.format = SDL_PIXELFORMAT_XRGB8888;
/* Transform the pixel values, if necessary. */
if (driverdata->transform & WL_OUTPUT_TRANSFORM_90) {
native_mode.w = driverdata->pixel_height;
native_mode.h = driverdata->pixel_width;
} else {
native_mode.w = driverdata->pixel_width;
native_mode.h = driverdata->pixel_height;
}
native_mode.refresh_rate_numerator = driverdata->refresh;
native_mode.refresh_rate_denominator = 1000;
if (driverdata->has_logical_size) { /* If xdg-output is present... */
if (native_mode.w != driverdata->screen_width || native_mode.h != driverdata->screen_height) {
/* ...and the compositor scales the logical viewport... */
if (video->viewporter) {
/* ...and viewports are supported, calculate the true scale of the output. */
driverdata->scale_factor = (float)native_mode.w / (float)driverdata->screen_width;
} else {
/* ...otherwise, the 'native' pixel values are a multiple of the logical screen size. */
driverdata->pixel_width = driverdata->screen_width * (int)driverdata->scale_factor;
driverdata->pixel_height = driverdata->screen_height * (int)driverdata->scale_factor;
}
} else {
/* ...and the output viewport is not scaled in the global compositing
* space, the output dimensions need to be divided by the scale factor.
*/
driverdata->screen_width /= (int)driverdata->scale_factor;
driverdata->screen_height /= (int)driverdata->scale_factor;
}
} else {
/* Calculate the points from the pixel values, if xdg-output isn't present.
* Use the native mode pixel values since they are pre-transformed.
*/
driverdata->screen_width = native_mode.w / (int)driverdata->scale_factor;
driverdata->screen_height = native_mode.h / (int)driverdata->scale_factor;
}
/* The scaled desktop mode */
SDL_zero(desktop_mode);
desktop_mode.format = SDL_PIXELFORMAT_XRGB8888;
if (!video->scale_to_display_enabled) {
desktop_mode.w = driverdata->screen_width;
desktop_mode.h = driverdata->screen_height;
desktop_mode.pixel_density = driverdata->scale_factor;
} else {
desktop_mode.w = native_mode.w;
desktop_mode.h = native_mode.h;
desktop_mode.pixel_density = 1.0f;
}
desktop_mode.refresh_rate_numerator = driverdata->refresh;
desktop_mode.refresh_rate_denominator = 1000;
if (driverdata->display > 0) {
dpy = SDL_GetVideoDisplay(driverdata->display);
} else {
dpy = &driverdata->placeholder;
}
if (video->scale_to_display_enabled) {
SDL_SetDisplayContentScale(dpy, driverdata->scale_factor);
}
/* Set the desktop display mode. */
SDL_SetDesktopDisplayMode(dpy, &desktop_mode);
/* Expose the unscaled, native resolution if the scale is 1.0 or viewports are available... */
if (driverdata->scale_factor == 1.0f || video->viewporter) {
SDL_AddFullscreenDisplayMode(dpy, &native_mode);
} else {
/* ...otherwise expose the integer scaled variants of the desktop resolution down to 1. */
int i;
desktop_mode.pixel_density = 1.0f;
for (i = (int)driverdata->scale_factor; i > 0; --i) {
desktop_mode.w = driverdata->screen_width * i;
desktop_mode.h = driverdata->screen_height * i;
SDL_AddFullscreenDisplayMode(dpy, &desktop_mode);
}
}
/* Add emulated modes if wp_viewporter is supported and mode emulation is enabled. */
if (video->viewporter && mode_emulation_enabled) {
/* The transformed display pixel width/height must be used here. */
AddEmulatedModes(driverdata, native_mode.w, native_mode.h);
}
if (driverdata->display == 0) {
/* First time getting display info, initialize the VideoDisplay */
if (driverdata->physical_width >= driverdata->physical_height) {
driverdata->placeholder.natural_orientation = SDL_ORIENTATION_LANDSCAPE;
} else {
driverdata->placeholder.natural_orientation = SDL_ORIENTATION_PORTRAIT;
}
driverdata->placeholder.current_orientation = driverdata->orientation;
driverdata->placeholder.driverdata = driverdata;
/* During initialization, the displays will be added after enumeration is complete. */
if (!video->initializing) {
driverdata->display = SDL_AddVideoDisplay(&driverdata->placeholder, SDL_TRUE);
SDL_free(driverdata->placeholder.name);
SDL_zero(driverdata->placeholder);
}
} else {
SDL_SendDisplayEvent(dpy, SDL_EVENT_DISPLAY_ORIENTATION, driverdata->orientation, 0);
}
}
static void display_handle_scale(void *data,
struct wl_output *output,
int32_t factor)
{
SDL_DisplayData *driverdata = (SDL_DisplayData *)data;
driverdata->scale_factor = factor;
}
static void display_handle_name(void *data, struct wl_output *wl_output, const char *name)
{
SDL_DisplayData *driverdata = (SDL_DisplayData *)data;
SDL_free(driverdata->wl_output_name);
driverdata->wl_output_name = SDL_strdup(name);
}
static void display_handle_description(void *data, struct wl_output *wl_output, const char *description)
{
SDL_DisplayData *driverdata = (SDL_DisplayData *)data;
if (driverdata->display == 0) {
/* The description, if available, supersedes the model name. */
SDL_free(driverdata->placeholder.name);
driverdata->placeholder.name = SDL_strdup(description);
}
}
static const struct wl_output_listener output_listener = {
display_handle_geometry, /* Version 1 */
display_handle_mode, /* Version 1 */
display_handle_done, /* Version 2 */
display_handle_scale, /* Version 2 */
display_handle_name, /* Version 4 */
display_handle_description /* Version 4 */
};
static int Wayland_add_display(SDL_VideoData *d, uint32_t id, uint32_t version)
{
struct wl_output *output;
SDL_DisplayData *data;
output = wl_registry_bind(d->registry, id, &wl_output_interface, version);
if (!output) {
return SDL_SetError("Failed to retrieve output.");
}
data = (SDL_DisplayData *)SDL_calloc(1, sizeof(*data));
data->videodata = d;
data->output = output;
data->registry_id = id;
data->scale_factor = 1.0f;
wl_output_add_listener(output, &output_listener, data);
SDL_WAYLAND_register_output(output);
/* Keep a list of outputs for deferred xdg-output initialization. */
WAYLAND_wl_list_insert(d->output_list.prev, &data->link);
if (data->videodata->xdg_output_manager) {
data->xdg_output = zxdg_output_manager_v1_get_xdg_output(data->videodata->xdg_output_manager, output);
zxdg_output_v1_add_listener(data->xdg_output, &xdg_output_listener, data);
}
return 0;
}
static void Wayland_free_display(SDL_VideoDisplay *display)
{
if (display) {
SDL_DisplayData *display_data = display->driverdata;
/* A preceding surface leave event is not guaranteed when an output is removed,
* so ensure that no window continues to hold a reference to a removed output.
*/
for (SDL_Window *window = SDL_GetVideoDevice()->windows; window; window = window->next) {
Wayland_RemoveOutputFromWindow(window->driverdata, display_data);
}
SDL_free(display_data->wl_output_name);
if (display_data->xdg_output) {
zxdg_output_v1_destroy(display_data->xdg_output);
}
if (wl_output_get_version(display_data->output) >= WL_OUTPUT_RELEASE_SINCE_VERSION) {
wl_output_release(display_data->output);
} else {
wl_output_destroy(display_data->output);