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lvgl_cpp/lv_drivers/wayland/wayland.c

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/**
* @file wayland.c
*
*/
/*********************
* INCLUDES
*********************/
#include "wayland.h"
#if USE_WAYLAND
#include <stdio.h>
#include <stddef.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/mman.h>
#include <linux/input.h>
#include <linux/input-event-codes.h>
#include <wayland-client.h>
#include <wayland-cursor.h>
#include <xkbcommon/xkbcommon.h>
#if !(LV_WAYLAND_XDG_SHELL || LV_WAYLAND_WL_SHELL)
#error "Please select at least one shell integration for Wayland driver"
#endif
#if LV_WAYLAND_XDG_SHELL
#include "protocols/wayland-xdg-shell-client-protocol.h"
#endif
/*********************
* DEFINES
*********************/
#define BYTES_PER_PIXEL ((LV_COLOR_DEPTH + 7) / 8)
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
#define TITLE_BAR_HEIGHT 24
#define BORDER_SIZE 2
#define BUTTON_MARGIN LV_MAX((TITLE_BAR_HEIGHT / 6), BORDER_SIZE)
#define BUTTON_PADDING LV_MAX((TITLE_BAR_HEIGHT / 8), BORDER_SIZE)
#define BUTTON_SIZE (TITLE_BAR_HEIGHT - (2 * BUTTON_MARGIN))
#endif
#ifndef LV_WAYLAND_CYCLE_PERIOD
#define LV_WAYLAND_CYCLE_PERIOD LV_MIN(LV_DISP_DEF_REFR_PERIOD,1)
#endif
/**********************
* TYPEDEFS
**********************/
enum object_type {
OBJECT_TITLEBAR,
OBJECT_BUTTON_CLOSE,
#if LV_WAYLAND_XDG_SHELL
OBJECT_BUTTON_MAXIMIZE,
OBJECT_BUTTON_MINIMIZE,
#endif
OBJECT_BORDER_TOP,
OBJECT_BORDER_BOTTOM,
OBJECT_BORDER_LEFT,
OBJECT_BORDER_RIGHT,
FIRST_DECORATION = OBJECT_TITLEBAR,
LAST_DECORATION = OBJECT_BORDER_RIGHT,
OBJECT_WINDOW,
};
#define NUM_DECORATIONS (LAST_DECORATION-FIRST_DECORATION+1)
struct window;
struct input
{
struct
{
lv_coord_t x;
lv_coord_t y;
lv_indev_state_t left_button;
lv_indev_state_t right_button;
lv_indev_state_t wheel_button;
int16_t wheel_diff;
} pointer;
struct
{
lv_key_t key;
lv_indev_state_t state;
} keyboard;
struct
{
lv_coord_t x;
lv_coord_t y;
lv_indev_state_t state;
} touch;
};
struct seat
{
struct wl_touch *wl_touch;
struct wl_pointer *wl_pointer;
struct wl_keyboard *wl_keyboard;
struct
{
struct xkb_keymap *keymap;
struct xkb_state *state;
} xkb;
};
struct buffer_hdl
{
void *base;
int size;
struct wl_buffer *wl_buffer;
bool busy;
};
struct buffer_allocator
{
int shm_mem_fd;
int shm_mem_size;
int shm_file_free_size;
struct wl_shm_pool *shm_pool;
};
struct graphic_object
{
struct window *window;
struct wl_surface *surface;
struct wl_subsurface *subsurface;
enum object_type type;
int width;
int height;
struct buffer_hdl buffer;
struct input input;
};
struct application
{
struct wl_display *display;
struct wl_registry *registry;
struct wl_compositor *compositor;
struct wl_subcompositor *subcompositor;
struct wl_shm *shm;
struct wl_seat *wl_seat;
struct wl_cursor_theme *cursor_theme;
struct wl_surface *cursor_surface;
#if LV_WAYLAND_WL_SHELL
struct wl_shell *wl_shell;
#endif
#if LV_WAYLAND_XDG_SHELL
struct xdg_wm_base *xdg_wm;
#endif
const char *xdg_runtime_dir;
#ifdef LV_WAYLAND_CLIENT_SIDE_DECORATIONS
bool opt_disable_decorations;
#endif
uint32_t format;
struct xkb_context *xkb_context;
struct seat seat;
struct graphic_object *touch_obj;
struct graphic_object *pointer_obj;
struct graphic_object *keyboard_obj;
lv_ll_t window_ll;
lv_timer_t * cycle_timer;
bool cursor_flush_pending;
};
struct window
{
lv_disp_drv_t lv_disp_drv;
lv_disp_draw_buf_t lv_disp_draw_buf;
lv_disp_t *lv_disp;
lv_indev_drv_t lv_indev_drv_pointer;
lv_indev_t * lv_indev_pointer;
lv_indev_drv_t lv_indev_drv_pointeraxis;
lv_indev_t * lv_indev_pointeraxis;
lv_indev_drv_t lv_indev_drv_touch;
lv_indev_t * lv_indev_touch;
lv_indev_drv_t lv_indev_drv_keyboard;
lv_indev_t * lv_indev_keyboard;
lv_wayland_display_close_f_t close_cb;
struct application *application;
#if LV_WAYLAND_WL_SHELL
struct wl_shell_surface *wl_shell_surface;
#endif
#if LV_WAYLAND_XDG_SHELL
struct xdg_surface *xdg_surface;
struct xdg_toplevel *xdg_toplevel;
#endif
struct buffer_allocator allocator;
struct graphic_object * body;
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
struct graphic_object * decoration[NUM_DECORATIONS];
#endif
int width;
int height;
bool resize_pending;
int resize_width;
int resize_height;
bool flush_pending;
bool shall_close;
bool closed;
bool maximized;
bool fullscreen;
};
/*********************************
* STATIC VARIABLES and FUNTIONS
*********************************/
static struct application application;
static inline bool _is_digit(char ch)
{
return (ch >= '0') && (ch <= '9');
}
static unsigned int _atoi(const char ** str)
{
unsigned int i = 0U;
while (_is_digit(**str))
{
i = i * 10U + (unsigned int)(*((*str)++) - '0');
}
return i;
}
static void shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
{
struct application *app = data;
switch (format)
{
#if (LV_COLOR_DEPTH == 32)
case WL_SHM_FORMAT_ARGB8888:
app->format = format;
break;
case WL_SHM_FORMAT_XRGB8888:
if (app->format != WL_SHM_FORMAT_ARGB8888)
{
app->format = format;
}
break;
#elif (LV_COLOR_DEPTH == 16)
case WL_SHM_FORMAT_RGB565:
app->format = format;
break;
#elif (LV_COLOR_DEPTH == 8)
case WL_SHM_FORMAT_RGB332:
app->format = format;
break;
#elif (LV_COLOR_DEPTH == 1)
case WL_SHM_FORMAT_RGB332:
app->format = format;
break;
#endif
default:
break;
}
}
static const struct wl_shm_listener shm_listener = {
shm_format
};
static void pointer_handle_enter(void *data, struct wl_pointer *pointer,
uint32_t serial, struct wl_surface *surface,
wl_fixed_t sx, wl_fixed_t sy)
{
struct application *app = data;
const char * cursor = "left_ptr";
int pos_x = wl_fixed_to_int(sx);
int pos_y = wl_fixed_to_int(sy);
if (!surface)
{
app->pointer_obj = NULL;
return;
}
app->pointer_obj = wl_surface_get_user_data(surface);
app->pointer_obj->input.pointer.x = pos_x;
app->pointer_obj->input.pointer.y = pos_y;
#if (LV_WAYLAND_CLIENT_SIDE_DECORATIONS && LV_WAYLAND_XDG_SHELL)
if (!app->pointer_obj->window->xdg_toplevel || app->opt_disable_decorations)
{
return;
}
struct window *window = app->pointer_obj->window;
switch (app->pointer_obj->type)
{
case OBJECT_BORDER_TOP:
if (window->maximized)
{
// do nothing
}
else if (pos_x < (BORDER_SIZE * 5))
{
cursor = "top_left_corner";
}
else if (pos_x >= (window->width + BORDER_SIZE - (BORDER_SIZE * 5)))
{
cursor = "top_right_corner";
}
else
{
cursor = "top_side";
}
break;
case OBJECT_BORDER_BOTTOM:
if (window->maximized)
{
// do nothing
}
else if (pos_x < (BORDER_SIZE * 5))
{
cursor = "bottom_left_corner";
}
else if (pos_x >= (window->width + BORDER_SIZE - (BORDER_SIZE * 5)))
{
cursor = "bottom_right_corner";
}
else
{
cursor = "bottom_side";
}
break;
case OBJECT_BORDER_LEFT:
if (window->maximized)
{
// do nothing
}
else if (pos_y < (BORDER_SIZE * 5))
{
cursor = "top_left_corner";
}
else if (pos_y >= (window->height + BORDER_SIZE - (BORDER_SIZE * 5)))
{
cursor = "bottom_left_corner";
}
else
{
cursor = "left_side";
}
break;
case OBJECT_BORDER_RIGHT:
if (window->maximized)
{
// do nothing
}
else if (pos_y < (BORDER_SIZE * 5))
{
cursor = "top_right_corner";
}
else if (pos_y >= (window->height + BORDER_SIZE - (BORDER_SIZE * 5)))
{
cursor = "bottom_right_corner";
}
else
{
cursor = "right_side";
}
break;
default:
break;
}
#endif
if (app->cursor_surface)
{
struct wl_cursor_image *cursor_image = wl_cursor_theme_get_cursor(app->cursor_theme, cursor)->images[0];
wl_pointer_set_cursor(pointer, serial, app->cursor_surface, cursor_image->hotspot_x, cursor_image->hotspot_y);
wl_surface_attach(app->cursor_surface, wl_cursor_image_get_buffer(cursor_image), 0, 0);
wl_surface_damage(app->cursor_surface, 0, 0, cursor_image->width, cursor_image->height);
wl_surface_commit(app->cursor_surface);
app->cursor_flush_pending = true;
}
}
static void pointer_handle_leave(void *data, struct wl_pointer *pointer,
uint32_t serial, struct wl_surface *surface)
{
struct application *app = data;
if (!surface || (app->pointer_obj == wl_surface_get_user_data(surface)))
{
app->pointer_obj = NULL;
}
}
static void pointer_handle_motion(void *data, struct wl_pointer *pointer,
uint32_t time, wl_fixed_t sx, wl_fixed_t sy)
{
struct application *app = data;
int max_x, max_y;
if (!app->pointer_obj)
{
return;
}
app->pointer_obj->input.pointer.x = LV_MAX(0, LV_MIN(wl_fixed_to_int(sx), app->pointer_obj->width - 1));
app->pointer_obj->input.pointer.y = LV_MAX(0, LV_MIN(wl_fixed_to_int(sy), app->pointer_obj->height - 1));
}
static void pointer_handle_button(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, uint32_t time, uint32_t button,
uint32_t state)
{
struct application *app = data;
const lv_indev_state_t lv_state =
(state == WL_POINTER_BUTTON_STATE_PRESSED) ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL;
if (!app->pointer_obj)
{
return;
}
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
struct window *window = app->pointer_obj->window;
int pos_x = app->pointer_obj->input.pointer.x;
int pos_y = app->pointer_obj->input.pointer.y;
#endif
switch (app->pointer_obj->type)
{
case OBJECT_WINDOW:
switch (button)
{
case BTN_LEFT:
app->pointer_obj->input.pointer.left_button = lv_state;
break;
case BTN_RIGHT:
app->pointer_obj->input.pointer.right_button = lv_state;
break;
case BTN_MIDDLE:
app->pointer_obj->input.pointer.wheel_button = lv_state;
break;
default:
break;
}
break;
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
case OBJECT_TITLEBAR:
if ((button == BTN_LEFT) && (state == WL_POINTER_BUTTON_STATE_PRESSED))
{
#if LV_WAYLAND_XDG_SHELL
if (window->xdg_toplevel)
{
xdg_toplevel_move(window->xdg_toplevel, app->wl_seat, serial);
window->flush_pending = true;
}
#endif
#if LV_WAYLAND_WL_SHELL
if (window->wl_shell_surface)
{
wl_shell_surface_move(window->wl_shell_surface, app->wl_seat, serial);
window->flush_pending = true;
}
#endif
}
break;
case OBJECT_BUTTON_CLOSE:
if ((button == BTN_LEFT) && (state == WL_POINTER_BUTTON_STATE_RELEASED))
{
window->shall_close = true;
}
break;
#if LV_WAYLAND_XDG_SHELL
case OBJECT_BUTTON_MAXIMIZE:
if ((button == BTN_LEFT) && (state == WL_POINTER_BUTTON_STATE_RELEASED))
{
if (window->xdg_toplevel)
{
if (window->maximized)
{
xdg_toplevel_unset_maximized(window->xdg_toplevel);
}
else
{
xdg_toplevel_set_maximized(window->xdg_toplevel);
}
window->maximized ^= true;
window->flush_pending = true;
}
}
break;
case OBJECT_BUTTON_MINIMIZE:
if ((button == BTN_LEFT) && (state == WL_POINTER_BUTTON_STATE_RELEASED))
{
if (window->xdg_toplevel)
{
xdg_toplevel_set_minimized(window->xdg_toplevel);
window->flush_pending = true;
}
}
break;
case OBJECT_BORDER_TOP:
if ((button == BTN_LEFT) && (state == WL_POINTER_BUTTON_STATE_PRESSED))
{
if (window->xdg_toplevel && !window->maximized)
{
uint32_t edge;
if (pos_x < (BORDER_SIZE * 5))
{
edge = XDG_TOPLEVEL_RESIZE_EDGE_TOP_LEFT;
}
else if (pos_x >= (window->width + BORDER_SIZE - (BORDER_SIZE * 5)))
{
edge = XDG_TOPLEVEL_RESIZE_EDGE_TOP_RIGHT;
}
else
{
edge = XDG_TOPLEVEL_RESIZE_EDGE_TOP;
}
xdg_toplevel_resize(window->xdg_toplevel,
window->application->wl_seat, serial, edge);
window->flush_pending = true;
}
}
break;
case OBJECT_BORDER_BOTTOM:
if ((button == BTN_LEFT) && (state == WL_POINTER_BUTTON_STATE_PRESSED))
{
if (window->xdg_toplevel && !window->maximized)
{
uint32_t edge;
if (pos_x < (BORDER_SIZE * 5))
{
edge = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_LEFT;
}
else if (pos_x >= (window->width + BORDER_SIZE - (BORDER_SIZE * 5)))
{
edge = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_RIGHT;
}
else
{
edge = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM;
}
xdg_toplevel_resize(window->xdg_toplevel,
window->application->wl_seat, serial, edge);
window->flush_pending = true;
}
}
break;
case OBJECT_BORDER_LEFT:
if ((button == BTN_LEFT) && (state == WL_POINTER_BUTTON_STATE_PRESSED))
{
if (window->xdg_toplevel && !window->maximized)
{
uint32_t edge;
if (pos_y < (BORDER_SIZE * 5))
{
edge = XDG_TOPLEVEL_RESIZE_EDGE_TOP_LEFT;
}
else if (pos_y >= (window->height + BORDER_SIZE - (BORDER_SIZE * 5)))
{
edge = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_LEFT;
}
else
{
edge = XDG_TOPLEVEL_RESIZE_EDGE_LEFT;
}
xdg_toplevel_resize(window->xdg_toplevel,
window->application->wl_seat, serial, edge);
window->flush_pending = true;
}
}
break;
case OBJECT_BORDER_RIGHT:
if ((button == BTN_LEFT) && (state == WL_POINTER_BUTTON_STATE_PRESSED))
{
if (window->xdg_toplevel && !window->maximized)
{
uint32_t edge;
if (pos_y < (BORDER_SIZE * 5))
{
edge = XDG_TOPLEVEL_RESIZE_EDGE_TOP_RIGHT;
}
else if (pos_y >= (window->height + BORDER_SIZE - (BORDER_SIZE * 5)))
{
edge = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_RIGHT;
}
else
{
edge = XDG_TOPLEVEL_RESIZE_EDGE_RIGHT;
}
xdg_toplevel_resize(window->xdg_toplevel,
window->application->wl_seat, serial, edge);
window->flush_pending = true;
}
}
break;
#endif // LV_WAYLAND_XDG_SHELL
#endif // LV_WAYLAND_CLIENT_SIDE_DECORATIONS
default:
break;
}
}
static void pointer_handle_axis(void *data, struct wl_pointer *wl_pointer,
uint32_t time, uint32_t axis, wl_fixed_t value)
{
struct application *app = data;
const int diff = wl_fixed_to_int(value);
if (!app->pointer_obj)
{
return;
}
if (axis == 0)
{
if (diff > 0)
{
app->pointer_obj->input.pointer.wheel_diff++;
}
else if (diff < 0)
{
app->pointer_obj->input.pointer.wheel_diff--;
}
}
}
static const struct wl_pointer_listener pointer_listener = {
.enter = pointer_handle_enter,
.leave = pointer_handle_leave,
.motion = pointer_handle_motion,
.button = pointer_handle_button,
.axis = pointer_handle_axis,
};
static lv_key_t keycode_xkb_to_lv(xkb_keysym_t xkb_key)
{
lv_key_t key = 0;
if (((xkb_key >= XKB_KEY_space) && (xkb_key <= XKB_KEY_asciitilde)))
{
key = xkb_key;
}
else if (((xkb_key >= XKB_KEY_KP_0) && (xkb_key <= XKB_KEY_KP_9)))
{
key = (xkb_key & 0x003f);
}
else
{
switch (xkb_key)
{
case XKB_KEY_BackSpace:
key = LV_KEY_BACKSPACE;
break;
case XKB_KEY_Return:
case XKB_KEY_KP_Enter:
key = LV_KEY_ENTER;
break;
case XKB_KEY_Escape:
key = LV_KEY_ESC;
break;
case XKB_KEY_Delete:
case XKB_KEY_KP_Delete:
key = LV_KEY_DEL;
break;
case XKB_KEY_Home:
case XKB_KEY_KP_Home:
key = LV_KEY_HOME;
break;
case XKB_KEY_Left:
case XKB_KEY_KP_Left:
key = LV_KEY_LEFT;
break;
case XKB_KEY_Up:
case XKB_KEY_KP_Up:
key = LV_KEY_UP;
break;
case XKB_KEY_Right:
case XKB_KEY_KP_Right:
key = LV_KEY_RIGHT;
break;
case XKB_KEY_Down:
case XKB_KEY_KP_Down:
key = LV_KEY_DOWN;
break;
case XKB_KEY_Prior:
case XKB_KEY_KP_Prior:
key = LV_KEY_PREV;
break;
case XKB_KEY_Next:
case XKB_KEY_KP_Next:
case XKB_KEY_Tab:
case XKB_KEY_KP_Tab:
key = LV_KEY_NEXT;
break;
case XKB_KEY_End:
case XKB_KEY_KP_End:
key = LV_KEY_END;
break;
default:
break;
}
}
return key;
}
static void keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
uint32_t format, int fd, uint32_t size)
{
struct application *app = data;
struct xkb_keymap *keymap;
struct xkb_state *state;
char *map_str;
if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1)
{
close(fd);
return;
}
map_str = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
if (map_str == MAP_FAILED)
{
close(fd);
return;
}
/* Set up XKB keymap */
keymap = xkb_keymap_new_from_string(app->xkb_context, map_str,
XKB_KEYMAP_FORMAT_TEXT_V1, 0);
munmap(map_str, size);
close(fd);
if (!keymap)
{
LV_LOG_ERROR("failed to compile keymap");
return;
}
/* Set up XKB state */
state = xkb_state_new(keymap);
if (!state)
{
LV_LOG_ERROR("failed to create XKB state");
xkb_keymap_unref(keymap);
return;
}
xkb_keymap_unref(app->seat.xkb.keymap);
xkb_state_unref(app->seat.xkb.state);
app->seat.xkb.keymap = keymap;
app->seat.xkb.state = state;
}
static void keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
uint32_t serial, struct wl_surface *surface,
struct wl_array *keys)
{
struct application *app = data;
if (!surface)
{
app->keyboard_obj = NULL;
}
else
{
app->keyboard_obj = wl_surface_get_user_data(surface);
}
}
static void keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
uint32_t serial, struct wl_surface *surface)
{
struct application *app = data;
if (!surface || (app->keyboard_obj == wl_surface_get_user_data(surface)))
{
app->keyboard_obj = NULL;
}
}
static void keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
uint32_t serial, uint32_t time, uint32_t key,
uint32_t state)
{
struct application *app = data;
const uint32_t code = (key + 8);
const xkb_keysym_t *syms;
xkb_keysym_t sym = XKB_KEY_NoSymbol;
if (!app->keyboard_obj || !app->seat.xkb.state)
{
return;
}
if (xkb_state_key_get_syms(app->seat.xkb.state, code, &syms) == 1)
{
sym = syms[0];
}
const lv_key_t lv_key = keycode_xkb_to_lv(sym);
const lv_indev_state_t lv_state =
(state == WL_KEYBOARD_KEY_STATE_PRESSED) ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL;
if (lv_key != 0)
{
app->keyboard_obj->input.keyboard.key = lv_key;
app->keyboard_obj->input.keyboard.state = lv_state;
}
}
static void keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
uint32_t serial, uint32_t mods_depressed,
uint32_t mods_latched, uint32_t mods_locked,
uint32_t group)
{
struct application *app = data;
/* If we're not using a keymap, then we don't handle PC-style modifiers */
if (!app->seat.xkb.keymap)
{
return;
}
xkb_state_update_mask(app->seat.xkb.state,
mods_depressed, mods_latched, mods_locked, 0, 0, group);
}
static const struct wl_keyboard_listener keyboard_listener = {
.keymap = keyboard_handle_keymap,
.enter = keyboard_handle_enter,
.leave = keyboard_handle_leave,
.key = keyboard_handle_key,
.modifiers = keyboard_handle_modifiers,
};
static void touch_handle_down(void *data, struct wl_touch *wl_touch,
uint32_t serial, uint32_t time, struct wl_surface *surface,
int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
{
struct application *app = data;
if (!surface)
{
app->touch_obj = NULL;
return;
}
app->touch_obj = wl_surface_get_user_data(surface);
app->touch_obj->input.touch.x = wl_fixed_to_int(x_w);
app->touch_obj->input.touch.y = wl_fixed_to_int(y_w);
app->touch_obj->input.touch.state = LV_INDEV_STATE_PR;
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
struct window *window = app->touch_obj->window;
switch (app->touch_obj->type)
{
case OBJECT_TITLEBAR:
#if LV_WAYLAND_XDG_SHELL
if (window->xdg_toplevel)
{
xdg_toplevel_move(window->xdg_toplevel, app->wl_seat, serial);
window->flush_pending = true;
}
#endif
#if LV_WAYLAND_WL_SHELL
if (window->wl_shell_surface)
{
wl_shell_surface_move(window->wl_shell_surface, app->wl_seat, serial);
window->flush_pending = true;
}
#endif
break;
default:
break;
}
#endif
}
static void touch_handle_up(void *data, struct wl_touch *wl_touch,
uint32_t serial, uint32_t time, int32_t id)
{
struct application *app = data;
if (!app->touch_obj)
{
return;
}
app->touch_obj->input.touch.state = LV_INDEV_STATE_REL;
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
struct window *window = app->touch_obj->window;
switch (app->touch_obj->type)
{
case OBJECT_BUTTON_CLOSE:
window->shall_close = true;
break;
#if LV_WAYLAND_XDG_SHELL
case OBJECT_BUTTON_MAXIMIZE:
if (window->xdg_toplevel)
{
if (window->maximized)
{
xdg_toplevel_unset_maximized(window->xdg_toplevel);
}
else
{
xdg_toplevel_set_maximized(window->xdg_toplevel);
}
window->maximized ^= true;
}
break;
case OBJECT_BUTTON_MINIMIZE:
if (window->xdg_toplevel)
{
xdg_toplevel_set_minimized(window->xdg_toplevel);
window->flush_pending = true;
}
#endif // LV_WAYLAND_XDG_SHELL
default:
break;
}
#endif // LV_WAYLAND_CLIENT_SIDE_DECORATIONS
app->touch_obj = NULL;
}
static void touch_handle_motion(void *data, struct wl_touch *wl_touch,
uint32_t time, int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)
{
struct application *app = data;
if (!app->touch_obj)
{
return;
}
app->touch_obj->input.touch.x = wl_fixed_to_int(x_w);
app->touch_obj->input.touch.y = wl_fixed_to_int(y_w);
}
static void touch_handle_frame(void *data, struct wl_touch *wl_touch)
{
}
static void touch_handle_cancel(void *data, struct wl_touch *wl_touch)
{
}
static const struct wl_touch_listener touch_listener = {
.down = touch_handle_down,
.up = touch_handle_up,
.motion = touch_handle_motion,
.frame = touch_handle_frame,
.cancel = touch_handle_cancel,
};
static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat, enum wl_seat_capability caps)
{
struct application *app = data;
struct seat *seat = &app->seat;
if ((caps & WL_SEAT_CAPABILITY_POINTER) && !seat->wl_pointer)
{
seat->wl_pointer = wl_seat_get_pointer(wl_seat);
wl_pointer_add_listener(seat->wl_pointer, &pointer_listener, app);
app->cursor_surface = wl_compositor_create_surface(app->compositor);
if (!app->cursor_surface)
{
LV_LOG_WARN("failed to create cursor surface");
}
}
else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && seat->wl_pointer)
{
wl_pointer_destroy(seat->wl_pointer);
if (app->cursor_surface)
{
wl_surface_destroy(app->cursor_surface);
}
seat->wl_pointer = NULL;
}
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !seat->wl_keyboard)
{
seat->wl_keyboard = wl_seat_get_keyboard(wl_seat);
wl_keyboard_add_listener(seat->wl_keyboard, &keyboard_listener, app);
}
else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && seat->wl_keyboard)
{
wl_keyboard_destroy(seat->wl_keyboard);
seat->wl_keyboard = NULL;
}
if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !seat->wl_touch)
{
seat->wl_touch = wl_seat_get_touch(wl_seat);
wl_touch_add_listener(seat->wl_touch, &touch_listener, app);
}
else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && seat->wl_touch)
{
wl_touch_destroy(seat->wl_touch);
seat->wl_touch = NULL;
}
}
static const struct wl_seat_listener seat_listener = {
.capabilities = seat_handle_capabilities,
};
#if LV_WAYLAND_WL_SHELL
static void wl_shell_handle_ping(void *data, struct wl_shell_surface *shell_surface, uint32_t serial)
{
return wl_shell_surface_pong(shell_surface, serial);
}
static void wl_shell_handle_configure(void *data, struct wl_shell_surface *shell_surface,
uint32_t edges, int32_t width, int32_t height)
{
struct window *window = (struct window *)data;
if ((width <= 0) || (height <= 0))
{
return;
}
else if ((width != window->width) || (height != window->height))
{
window->resize_width = width;
window->resize_height = height;
window->resize_pending = true;
}
}
static const struct wl_shell_surface_listener shell_surface_listener = {
.ping = wl_shell_handle_ping,
.configure = wl_shell_handle_configure,
};
#endif
#if LV_WAYLAND_XDG_SHELL
static void xdg_surface_handle_configure(void *data, struct xdg_surface *xdg_surface, uint32_t serial)
{
return xdg_surface_ack_configure(xdg_surface, serial);
}
static const struct xdg_surface_listener xdg_surface_listener = {
.configure = xdg_surface_handle_configure,
};
static void xdg_toplevel_handle_configure(void *data, struct xdg_toplevel *xdg_toplevel,
int32_t width, int32_t height, struct wl_array *states)
{
struct window *window = (struct window *)data;
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
if (!window->application->opt_disable_decorations && !window->fullscreen)
{
width -= (2 * BORDER_SIZE);
height -= (TITLE_BAR_HEIGHT + (2 * BORDER_SIZE));
}
#endif
if ((width <= 0) || (height <= 0))
{
return;
}
if ((width != window->width) || (height != window->height))
{
window->resize_width = width;
window->resize_height = height;
window->resize_pending = true;
}
}
static void xdg_toplevel_handle_close(void *data, struct xdg_toplevel *xdg_toplevel)
{
struct window *window = (struct window *)data;
window->shall_close = true;
}
static const struct xdg_toplevel_listener xdg_toplevel_listener = {
.configure = xdg_toplevel_handle_configure,
.close = xdg_toplevel_handle_close,
};
static void xdg_wm_base_ping(void *data, struct xdg_wm_base *xdg_wm_base, uint32_t serial)
{
return xdg_wm_base_pong(xdg_wm_base, serial);
}
static const struct xdg_wm_base_listener xdg_wm_base_listener = {
.ping = xdg_wm_base_ping
};
#endif
static void handle_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version)
{
struct application *app = data;
if (strcmp(interface, wl_compositor_interface.name) == 0)
{
app->compositor = wl_registry_bind(registry, name, &wl_compositor_interface, 1);
}
else if (strcmp(interface, wl_subcompositor_interface.name) == 0)
{
app->subcompositor = wl_registry_bind(registry, name, &wl_subcompositor_interface, 1);
}
else if (strcmp(interface, wl_shm_interface.name) == 0)
{
app->shm = wl_registry_bind(registry, name, &wl_shm_interface, 1);
wl_shm_add_listener(app->shm, &shm_listener, app);
app->cursor_theme = wl_cursor_theme_load(NULL, 32, app->shm);
}
else if (strcmp(interface, wl_seat_interface.name) == 0)
{
app->wl_seat = wl_registry_bind(app->registry, name, &wl_seat_interface, 1);
wl_seat_add_listener(app->wl_seat, &seat_listener, app);
}
#if LV_WAYLAND_WL_SHELL
else if (strcmp(interface, wl_shell_interface.name) == 0)
{
app->wl_shell = wl_registry_bind(registry, name, &wl_shell_interface, 1);
}
#endif
#if LV_WAYLAND_XDG_SHELL
else if (strcmp(interface, xdg_wm_base_interface.name) == 0)
{
app->xdg_wm = wl_registry_bind(app->registry, name, &xdg_wm_base_interface, version);
xdg_wm_base_add_listener(app->xdg_wm, &xdg_wm_base_listener, app);
}
#endif
}
static void handle_global_remove(void *data, struct wl_registry *registry, uint32_t name)
{
}
static const struct wl_registry_listener registry_listener = {
.global = handle_global,
.global_remove = handle_global_remove
};
static void handle_wl_buffer_release(void *data, struct wl_buffer *wl_buffer)
{
struct buffer_hdl *buffer_hdl = (struct buffer_hdl *)data;
buffer_hdl->busy = false;
}
static const struct wl_buffer_listener wl_buffer_listener = {
.release = handle_wl_buffer_release,
};
static bool initialize_allocator(struct buffer_allocator *allocator, const char *dir)
{
static const char template[] = "/lvgl-wayland-XXXXXX";
char *name;
// Create file for shared memory allocation
name = lv_mem_alloc(strlen(dir) + sizeof(template));
LV_ASSERT_MSG(name, "cannot allocate memory for name");
if (!name)
{
return false;
}
strcpy(name, dir);
strcat(name, template);
allocator->shm_mem_fd = mkstemp(name);
unlink(name);
lv_mem_free(name);
LV_ASSERT_MSG((allocator->shm_mem_fd >= 0), "cannot create tmpfile");
if (allocator->shm_mem_fd < 0)
{
return false;
}
allocator->shm_mem_size = 0;
allocator->shm_file_free_size = 0;
return true;
}
static void deinitialize_allocator(struct buffer_allocator *allocator)
{
if (allocator->shm_pool)
{
wl_shm_pool_destroy(allocator->shm_pool);
}
if (allocator->shm_mem_fd >= 0)
{
close(allocator->shm_mem_fd);
allocator->shm_mem_fd = -1;
}
}
static bool initialize_buffer(struct window *window, struct buffer_hdl *buffer_hdl,
int width, int height)
{
struct application *app = window->application;
struct buffer_allocator *allocator = &window->allocator;
int allocated_size = 0;
int ret;
long sz = sysconf(_SC_PAGESIZE);
buffer_hdl->size = (((width * height * BYTES_PER_PIXEL) + sz - 1) / sz) * sz;
LV_LOG_TRACE("initializing buffer %dx%d (alloc size: %d)",
width, height, buffer_hdl->size);
if (allocator->shm_file_free_size < buffer_hdl->size)
{
do
{
ret = ftruncate(allocator->shm_mem_fd,
allocator->shm_mem_size + (buffer_hdl->size - allocator->shm_file_free_size));
}
while ((ret < 0) && (errno == EINTR));
if (ret < 0)
{
LV_LOG_ERROR("ftruncate failed: %s", strerror(errno));
goto err_out;
}
else
{
allocated_size = (buffer_hdl->size - allocator->shm_file_free_size);
}
LV_ASSERT_MSG((allocated_size >= 0), "allocated_size is negative");
}
buffer_hdl->base = mmap(NULL, buffer_hdl->size,
PROT_READ | PROT_WRITE, MAP_SHARED,
allocator->shm_mem_fd,
allocator->shm_mem_size - allocator->shm_file_free_size);
if (buffer_hdl->base == MAP_FAILED)
{
LV_LOG_ERROR("mmap failed: %s", strerror(errno));
goto err_inc_free;
}
if (!allocator->shm_pool)
{
// Create SHM pool
allocator->shm_pool = wl_shm_create_pool(app->shm,
allocator->shm_mem_fd,
allocator->shm_mem_size + allocated_size);
if (!allocator->shm_pool)
{
LV_LOG_ERROR("cannot create shm pool");
goto err_unmap;
}
}
else if (allocated_size > 0)
{
// Resize SHM pool
wl_shm_pool_resize(allocator->shm_pool,
allocator->shm_mem_size + allocated_size);
}
// Create buffer
buffer_hdl->wl_buffer = wl_shm_pool_create_buffer(allocator->shm_pool,
allocator->shm_mem_size - allocator->shm_file_free_size,
width, height,
width * BYTES_PER_PIXEL,
app->format);
if (!buffer_hdl->wl_buffer)
{
LV_LOG_ERROR("cannot create shm buffer");
goto err_unmap;
}
wl_buffer_add_listener(buffer_hdl->wl_buffer, &wl_buffer_listener, buffer_hdl);
/* Update size of SHM */
allocator->shm_mem_size += allocated_size;
allocator->shm_file_free_size = LV_MAX(0, (allocator->shm_file_free_size - buffer_hdl->size));
lv_memset_00(buffer_hdl->base, buffer_hdl->size);
return true;
err_unmap:
munmap(buffer_hdl->base, buffer_hdl->size);
err_inc_free:
allocator->shm_file_free_size += allocated_size;
err_out:
return false;
}
static bool deinitialize_buffer(struct window *window, struct buffer_hdl *buffer_hdl)
{
struct buffer_allocator *allocator = &window->allocator;
if (buffer_hdl->wl_buffer)
{
wl_buffer_destroy(buffer_hdl->wl_buffer);
buffer_hdl->wl_buffer = NULL;
}
if (buffer_hdl->size > 0)
{
munmap(buffer_hdl->base, buffer_hdl->size);
allocator->shm_file_free_size += buffer_hdl->size;
buffer_hdl->base = 0;
buffer_hdl->size = 0;
}
return true;
}
static struct graphic_object * create_graphic_obj(struct application *app, struct window *window,
enum object_type type,
struct graphic_object *parent)
{
struct graphic_object *obj;
obj = lv_mem_alloc(sizeof(*obj));
LV_ASSERT_MALLOC(obj);
if (!obj)
{
return NULL;
}
lv_memset(obj, 0x00, sizeof(struct graphic_object));
obj->window = window;
obj->type = type;
obj->surface = wl_compositor_create_surface(app->compositor);
if (!obj->surface)
{
LV_LOG_ERROR("cannot create surface for graphic object");
goto err_out;
}
wl_surface_set_user_data(obj->surface, obj);
return obj;
err_destroy_surface:
wl_surface_destroy(obj->surface);
err_free:
lv_mem_free(obj);
err_out:
return NULL;
}
static void destroy_graphic_obj(struct graphic_object * obj)
{
if (obj->subsurface)
{
wl_subsurface_destroy(obj->subsurface);
}
wl_surface_destroy(obj->surface);
lv_mem_free(obj);
}
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
static bool create_decoration(struct window *window,
struct graphic_object * decoration,
int window_width, int window_height)
{
struct buffer_hdl * buffer = &decoration->buffer;
int x, y;
switch (decoration->type)
{
case OBJECT_TITLEBAR:
decoration->width = window_width;
decoration->height = TITLE_BAR_HEIGHT;
break;
case OBJECT_BUTTON_CLOSE:
decoration->width = BUTTON_SIZE;
decoration->height = BUTTON_SIZE;
break;
#if LV_WAYLAND_XDG_SHELL
case OBJECT_BUTTON_MAXIMIZE:
decoration->width = BUTTON_SIZE;
decoration->height = BUTTON_SIZE;
break;
case OBJECT_BUTTON_MINIMIZE:
decoration->width = BUTTON_SIZE;
decoration->height = BUTTON_SIZE;
break;
#endif
case OBJECT_BORDER_TOP:
decoration->width = window_width + 2 * (BORDER_SIZE);
decoration->height = BORDER_SIZE;
break;
case OBJECT_BORDER_BOTTOM:
decoration->width = window_width + 2 * (BORDER_SIZE);
decoration->height = BORDER_SIZE;
break;
case OBJECT_BORDER_LEFT:
decoration->width = BORDER_SIZE;
decoration->height = window_height + TITLE_BAR_HEIGHT;
break;
case OBJECT_BORDER_RIGHT:
decoration->width = BORDER_SIZE;
decoration->height = window_height + TITLE_BAR_HEIGHT;
break;
default:
LV_ASSERT_MSG(0, "Invalid object type");
return false;
}
if (!initialize_buffer(window, buffer, decoration->width, decoration->height))
{
LV_LOG_ERROR("cannot create buffer for decoration");
return false;
}
switch (decoration->type)
{
case OBJECT_TITLEBAR:
lv_color_fill((lv_color_t *)buffer->base,
lv_color_make(0x66, 0x66, 0x66), (decoration->width * decoration->height));
break;
case OBJECT_BUTTON_CLOSE:
lv_color_fill((lv_color_t *)buffer->base,
lv_color_make(0xCC, 0xCC, 0xCC), (decoration->width * decoration->height));
for (y = 0; y < decoration->height; y++)
{
for (x = 0; x < decoration->width; x++)
{
lv_color_t *pixel = ((lv_color_t *)buffer->base + (y * decoration->width) + x);
if ((x >= BUTTON_PADDING) && (x < decoration->width - BUTTON_PADDING))
{
if ((x == y) || (x == decoration->width - 1 - y))
{
*pixel = lv_color_make(0x33, 0x33, 0x33);
}
else if ((x == y - 1) || (x == decoration->width - y))
{
*pixel = lv_color_make(0x66, 0x66, 0x66);
}
}
}
}
break;
#if LV_WAYLAND_XDG_SHELL
case OBJECT_BUTTON_MAXIMIZE:
lv_color_fill((lv_color_t *)buffer->base,
lv_color_make(0xCC, 0xCC, 0xCC), (decoration->width * decoration->height));
for (y = 0; y < decoration->height; y++)
{
for (x = 0; x < decoration->width; x++)
{
lv_color_t *pixel = ((lv_color_t *)buffer->base + (y * decoration->width) + x);
if (((x == BUTTON_PADDING) && (y >= BUTTON_PADDING) && (y < decoration->height - BUTTON_PADDING)) ||
((x == (decoration->width - BUTTON_PADDING)) && (y >= BUTTON_PADDING) && (y <= decoration->height - BUTTON_PADDING)) ||
((y == BUTTON_PADDING) && (x >= BUTTON_PADDING) && (x < decoration->width - BUTTON_PADDING)) ||
((y == (BUTTON_PADDING + 1)) && (x >= BUTTON_PADDING) && (x < decoration->width - BUTTON_PADDING)) ||
((y == (decoration->height - BUTTON_PADDING)) && (x >= BUTTON_PADDING) && (x < decoration->width - BUTTON_PADDING)))
{
*pixel = lv_color_make(0x33, 0x33, 0x33);
}
}
}
break;
case OBJECT_BUTTON_MINIMIZE:
lv_color_fill((lv_color_t *)buffer->base,
lv_color_make(0xCC, 0xCC, 0xCC), (decoration->width * decoration->height));
for (y = 0; y < decoration->height; y++)
{
for (x = 0; x < decoration->width; x++)
{
lv_color_t *pixel = ((lv_color_t *)buffer->base + (y * decoration->width) + x);
if ((x >= BUTTON_PADDING) && (x < decoration->width - BUTTON_PADDING) &&
(y > decoration->height - (2 * BUTTON_PADDING)) && (y < decoration->height - BUTTON_PADDING))
{
*pixel = lv_color_make(0x33, 0x33, 0x33);
}
}
}
break;
#endif
case OBJECT_BORDER_TOP:
/* fallthrough */
case OBJECT_BORDER_BOTTOM:
/* fallthrough */
case OBJECT_BORDER_LEFT:
/* fallthrough */
case OBJECT_BORDER_RIGHT:
lv_color_fill((lv_color_t *)buffer->base,
lv_color_make(0x66, 0x66, 0x66), (decoration->width * decoration->height));
break;
default:
LV_ASSERT_MSG(0, "Invalid object type");
return false;
}
return true;
}
static bool attach_decoration(struct window *window, struct graphic_object * decoration,
struct graphic_object * parent)
{
struct buffer_hdl * buffer = &decoration->buffer;
int pos_x, pos_y;
int x, y;
switch (decoration->type)
{
case OBJECT_TITLEBAR:
pos_x = 0;
pos_y = -TITLE_BAR_HEIGHT;
break;
case OBJECT_BUTTON_CLOSE:
pos_x = parent->width - 1 * (BUTTON_MARGIN + BUTTON_SIZE);
pos_y = -1 * (BUTTON_MARGIN + BUTTON_SIZE + (BORDER_SIZE / 2));
break;
#if LV_WAYLAND_XDG_SHELL
case OBJECT_BUTTON_MAXIMIZE:
pos_x = parent->width - 2 * (BUTTON_MARGIN + BUTTON_SIZE);
pos_y = -1 * (BUTTON_MARGIN + BUTTON_SIZE + (BORDER_SIZE / 2));
break;
case OBJECT_BUTTON_MINIMIZE:
pos_x = parent->width - 3 * (BUTTON_MARGIN + BUTTON_SIZE);
pos_y = -1 * (BUTTON_MARGIN + BUTTON_SIZE + (BORDER_SIZE / 2));
break;
#endif
case OBJECT_BORDER_TOP:
pos_x = -BORDER_SIZE;
pos_y = -(BORDER_SIZE + TITLE_BAR_HEIGHT);
break;
case OBJECT_BORDER_BOTTOM:
pos_x = -BORDER_SIZE;
pos_y = parent->height;
break;
case OBJECT_BORDER_LEFT:
pos_x = -BORDER_SIZE;
pos_y = -TITLE_BAR_HEIGHT;
break;
case OBJECT_BORDER_RIGHT:
pos_x = parent->width;
pos_y = -TITLE_BAR_HEIGHT;
break;
default:
LV_ASSERT_MSG(0, "Invalid object type");
return false;
}
decoration->subsurface = wl_subcompositor_get_subsurface(window->application->subcompositor,
decoration->surface,
parent->surface);
if (!decoration->subsurface)
{
LV_LOG_ERROR("cannot get subsurface for decoration");
goto err_destroy_surface;
}
wl_subsurface_set_desync(decoration->subsurface);
wl_subsurface_set_position(decoration->subsurface, pos_x, pos_y);
wl_surface_attach(decoration->surface, buffer->wl_buffer, 0, 0);
wl_surface_commit(decoration->surface);
buffer->busy = true;
return true;
err_destroy_surface:
wl_surface_destroy(decoration->surface);
decoration->surface = NULL;
return false;
}
static void detach_decoration(struct window *window,
struct graphic_object * decoration)
{
if (decoration->subsurface)
{
wl_subsurface_destroy(decoration->subsurface);
decoration->subsurface = NULL;
}
}
#endif
static bool resize_window(struct window *window, int width, int height)
{
struct buffer_hdl *buffer = &window->body->buffer;
LV_LOG_TRACE("resize window %dx%d", width, height);
// De-initialize previous buffers
if (buffer->busy)
{
LV_LOG_WARN("Deinitializing busy window buffer...");
wl_surface_attach(window->body->surface, NULL, 0, 0);
wl_surface_commit(window->body->surface);
buffer->busy = false;
}
if (!deinitialize_buffer(window, buffer))
{
LV_LOG_ERROR("failed to deinitialize window buffer");
return false;
}
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
int b;
for (b = 0; b < NUM_DECORATIONS; b++)
{
if (window->decoration[b] != NULL)
{
detach_decoration(window, window->decoration[b]);
deinitialize_buffer(window, &window->decoration[b]->buffer);
}
}
#endif
// Initialize backing buffer
if (!initialize_buffer(window, buffer, width, height))
{
LV_LOG_ERROR("failed to initialize window buffer");
return false;
}
window->width = width;
window->height = height;
window->body->width = width;
window->body->height = height;
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
if (!window->application->opt_disable_decorations && !window->fullscreen)
{
for (b = 0; b < NUM_DECORATIONS; b++)
{
if (!create_decoration(window, window->decoration[b],
window->body->width, window->body->height))
{
LV_LOG_ERROR("failed to create decoration %d", b);
}
else if (!attach_decoration(window, window->decoration[b], window->body))
{
LV_LOG_ERROR("failed to attach decoration %d", b);
}
}
}
#endif
if (window->lv_disp != NULL)
{
// Propagate resize to upper layers
window->lv_disp_drv.hor_res = width;
window->lv_disp_drv.ver_res = height;
lv_disp_drv_update(window->lv_disp, &window->lv_disp_drv);
window->body->input.pointer.x = LV_MIN(window->body->input.pointer.x, (width - 1));
window->body->input.pointer.y = LV_MIN(window->body->input.pointer.y, (height - 1));
}
return true;
}
static struct window *create_window(struct application *app, int width, int height, const char *title)
{
struct window *window;
window = _lv_ll_ins_tail(&app->window_ll);
LV_ASSERT_MALLOC(window);
if (!window)
{
return NULL;
}
lv_memset(window, 0x00, sizeof(struct window));
window->application = app;
// Initialize buffer allocator
if (!initialize_allocator(&window->allocator, app->xdg_runtime_dir))
{
LV_LOG_ERROR("cannot init memory allocator");
goto err_free_window;
}
// Create wayland buffer and surface
window->body = create_graphic_obj(app, window, OBJECT_WINDOW, NULL);
if (!window->body)
{
LV_LOG_ERROR("cannot create window body");
goto err_deinit_allocator;
}
// Create shell surface
if (0)
{
// Needed for #if madness below
}
#if LV_WAYLAND_XDG_SHELL
else if (app->xdg_wm)
{
window->xdg_surface = xdg_wm_base_get_xdg_surface(app->xdg_wm, window->body->surface);
if (!window->xdg_surface)
{
LV_LOG_ERROR("cannot create XDG surface");
goto err_destroy_surface;
}
xdg_surface_add_listener(window->xdg_surface, &xdg_surface_listener, window);
window->xdg_toplevel = xdg_surface_get_toplevel(window->xdg_surface);
if (!window->xdg_toplevel)
{
LV_LOG_ERROR("cannot get XDG toplevel surface");
goto err_destroy_shell_surface;
}
xdg_toplevel_add_listener(window->xdg_toplevel, &xdg_toplevel_listener, window);
xdg_toplevel_set_title(window->xdg_toplevel, title);
xdg_toplevel_set_app_id(window->xdg_toplevel, title);
}
#endif
#if LV_WAYLAND_WL_SHELL
else if (app->wl_shell)
{
window->wl_shell_surface = wl_shell_get_shell_surface(app->wl_shell, window->body->surface);
if (!window->wl_shell_surface)
{
LV_LOG_ERROR("cannot create WL shell surface");
goto err_destroy_surface;
}
wl_shell_surface_add_listener(window->wl_shell_surface, &shell_surface_listener, window);
wl_shell_surface_set_toplevel(window->wl_shell_surface);
wl_shell_surface_set_title(window->wl_shell_surface, title);
}
#endif
else
{
LV_LOG_ERROR("No shell available");
goto err_destroy_surface;
}
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
if (!app->opt_disable_decorations)
{
int d;
for (d = 0; d < NUM_DECORATIONS; d++)
{
window->decoration[d] = create_graphic_obj(app, window, (FIRST_DECORATION+d), window->body);
if (!window->decoration[d])
{
LV_LOG_ERROR("Failed to create decoration %d", d);
}
}
}
#endif
if (!resize_window(window, width, height))
{
LV_LOG_ERROR("Failed to resize window");
goto err_destroy_shell_surface2;
}
return window;
err_destroy_shell_surface2:
#if LV_WAYLAND_XDG_SHELL
if (window->xdg_toplevel)
{
xdg_toplevel_destroy(window->xdg_toplevel);
}
#endif
err_destroy_shell_surface:
#if LV_WAYLAND_WL_SHELL
if (window->wl_shell_surface)
{
wl_shell_surface_destroy(window->wl_shell_surface);
}
#endif
#if LV_WAYLAND_XDG_SHELL
if (window->xdg_surface)
{
xdg_surface_destroy(window->xdg_surface);
}
#endif
err_destroy_surface:
wl_surface_destroy(window->body->surface);
err_deinit_allocator:
deinitialize_allocator(&window->allocator);
err_free_window:
_lv_ll_remove(&app->window_ll, window);
lv_mem_free(window);
return NULL;
}
static void destroy_window(struct window *window)
{
if (!window)
{
return;
}
#if LV_WAYLAND_WL_SHELL
if (window->wl_shell_surface)
{
wl_shell_surface_destroy(window->wl_shell_surface);
}
#endif
#if LV_WAYLAND_XDG_SHELL
if (window->xdg_toplevel)
{
xdg_toplevel_destroy(window->xdg_toplevel);
xdg_surface_destroy(window->xdg_surface);
}
#endif
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
int b;
for (b = 0; b < NUM_DECORATIONS; b++)
{
if (window->decoration[b])
{
deinitialize_buffer(window, &window->decoration[b]->buffer);
destroy_graphic_obj(window->decoration[b]);
window->decoration[b] = NULL;
}
}
#endif
deinitialize_buffer(window, &window->body->buffer);
destroy_graphic_obj(window->body);
deinitialize_allocator(&window->allocator);
}
static void _lv_wayland_flush(lv_disp_drv_t *disp_drv, const lv_area_t *area, lv_color_t *color_p)
{
struct window *window = disp_drv->user_data;
struct buffer_hdl *buffer = &window->body->buffer;
const lv_coord_t hres = (disp_drv->rotated == 0) ? (disp_drv->hor_res) : (disp_drv->ver_res);
const lv_coord_t vres = (disp_drv->rotated == 0) ? (disp_drv->ver_res) : (disp_drv->hor_res);
/* If private data is not set, it means window has not been initialized */
if (!window)
{
LV_LOG_ERROR("please intialize wayland display using lv_wayland_create_window()");
return;
}
/* If window has been / is being closed, or is not visible, skip rendering */
else if (window->closed || window->shall_close)
{
lv_disp_flush_ready(disp_drv);
return;
}
/* Return if the area is out the screen */
else if ((area->x2 < 0) || (area->y2 < 0) || (area->x1 > hres - 1) || (area->y1 > vres - 1))
{
lv_disp_flush_ready(disp_drv);
return;
}
else if (window->resize_pending)
{
LV_LOG_TRACE("skip flush since resize is pending");
lv_disp_flush_ready(disp_drv);
return;
}
int32_t x;
int32_t y;
for (y = area->y1; y <= area->y2 && y < disp_drv->ver_res; y++)
{
for (x = area->x1; x <= area->x2 && x < disp_drv->hor_res; x++)
{
int offset = (y * disp_drv->hor_res) + x;
#if (LV_COLOR_DEPTH == 32)
uint32_t * const buf = (uint32_t *)buffer->base + offset;
*buf = color_p->full;
#elif (LV_COLOR_DEPTH == 16)
uint16_t * const buf = (uint16_t *)buffer->base + offset;
*buf = color_p->full;
#elif (LV_COLOR_DEPTH == 8)
uint8_t * const buf = (uint8_t *)buffer->base + offset;
*buf = color_p->full;
#elif (LV_COLOR_DEPTH == 1)
uint8_t * const buf = (uint8_t *)buffer->base + offset;
*buf = ((0x07 * color_p->ch.red) << 5) |
((0x07 * color_p->ch.green) << 2) |
((0x03 * color_p->ch.blue) << 0);
#endif
color_p++;
}
}
wl_surface_damage(window->body->surface, area->x1, area->y1,
(area->x2 - area->x1 + 1), (area->y2 - area->y1 + 1));
if (lv_disp_flush_is_last(disp_drv))
{
wl_surface_attach(window->body->surface, buffer->wl_buffer, 0, 0);
wl_surface_commit(window->body->surface);
buffer->busy = true;
window->flush_pending = true;
}
lv_disp_flush_ready(disp_drv);
}
static void _lv_wayland_cycle(lv_timer_t * tmr)
{
struct window *window = NULL;
bool shall_flush = application.cursor_flush_pending;
LV_UNUSED(tmr);
while (wl_display_prepare_read(application.display) != 0)
{
wl_display_dispatch_pending(application.display);
}
_LV_LL_READ(&application.window_ll, window)
{
if ((window->shall_close) && (window->close_cb != NULL))
{
window->shall_close = window->close_cb(window->lv_disp);
}
if (window->closed)
{
continue;
}
else if (window->shall_close)
{
destroy_window(window);
window->closed = true;
window->shall_close = false;
shall_flush = true;
window->body->input.touch.x = 0;
window->body->input.touch.y = 0;
window->body->input.touch.state = LV_INDEV_STATE_RELEASED;
if (window->application->touch_obj == window->body)
{
window->application->touch_obj = NULL;
}
window->body->input.pointer.x = 0;
window->body->input.pointer.y = 0;
window->body->input.pointer.left_button = LV_INDEV_STATE_RELEASED;
window->body->input.pointer.right_button = LV_INDEV_STATE_RELEASED;
window->body->input.pointer.wheel_button = LV_INDEV_STATE_RELEASED;
window->body->input.pointer.wheel_diff = 0;
if (window->application->pointer_obj == window->body)
{
window->application->pointer_obj = NULL;
}
window->body->input.keyboard.key = 0;
window->body->input.keyboard.state = LV_INDEV_STATE_RELEASED;
if (window->application->keyboard_obj == window->body)
{
window->application->keyboard_obj = NULL;
}
}
else if (window->resize_pending)
{
bool do_resize = !window->body->buffer.busy;
#if LV_WAYLAND_CLIENT_SIDE_DECORATIONS
if (!window->application->opt_disable_decorations && !window->fullscreen)
{
int d;
for (d = 0; d < NUM_DECORATIONS; d++)
{
if ((window->decoration[d] != NULL) && (window->decoration[d]->buffer.busy))
{
do_resize = false;
break;
}
}
}
#endif
if (do_resize && resize_window(window, window->resize_width, window->resize_height))
{
window->resize_width = window->width;
window->resize_height = window->height;
window->resize_pending = false;
}
}
else
{
shall_flush |= window->flush_pending;
}
window->flush_pending = false;
}
if (shall_flush)
{
wl_display_flush(application.display);
application.cursor_flush_pending = false;
}
wl_display_read_events(application.display);
wl_display_dispatch_pending(application.display);
}
static void _lv_wayland_pointer_read(lv_indev_drv_t *drv, lv_indev_data_t *data)
{
struct window *window = drv->disp->driver->user_data;
if (!window || window->closed)
{
return;
}
data->point.x = window->body->input.pointer.x;
data->point.y = window->body->input.pointer.y;
data->state = window->body->input.pointer.left_button;
}
static void _lv_wayland_pointeraxis_read(lv_indev_drv_t *drv, lv_indev_data_t *data)
{
struct window *window = drv->disp->driver->user_data;
if (!window || window->closed)
{
return;
}
data->state = window->body->input.pointer.wheel_button;
data->enc_diff = window->body->input.pointer.wheel_diff;
window->body->input.pointer.wheel_diff = 0;
}
static void _lv_wayland_keyboard_read(lv_indev_drv_t *drv, lv_indev_data_t *data)
{
struct window *window = drv->disp->driver->user_data;
if (!window || window->closed)
{
return;
}
data->key = window->body->input.keyboard.key;
data->state = window->body->input.keyboard.state;
}
static void _lv_wayland_touch_read(lv_indev_drv_t *drv, lv_indev_data_t *data)
{
struct window *window = drv->disp->driver->user_data;
if (!window || window->closed)
{
return;
}
data->point.x = window->body->input.touch.x;
data->point.y = window->body->input.touch.y;
data->state = window->body->input.touch.state;
}
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize Wayland driver
*/
void lv_wayland_init(void)
{
application.xdg_runtime_dir = getenv("XDG_RUNTIME_DIR");
LV_ASSERT_MSG(application.xdg_runtime_dir, "cannot get XDG_RUNTIME_DIR");
// Create XKB context
application.xkb_context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
LV_ASSERT_MSG(application.xkb_context, "failed to create XKB context");
if (application.xkb_context == NULL)
{
return;
}
// Connect to Wayland display
application.display = wl_display_connect(NULL);
LV_ASSERT_MSG(application.display, "failed to connect to Wayland server");
if (application.display == NULL)
{
return;
}
/* Add registry listener and wait for registry reception */
application.format = 0xFFFFFFFF;
application.registry = wl_display_get_registry(application.display);
wl_registry_add_listener(application.registry, &registry_listener, &application);
wl_display_dispatch(application.display);
wl_display_roundtrip(application.display);
LV_ASSERT_MSG(application.compositor, "Wayland compositor not available");
if (application.compositor == NULL)
{
return;
}
LV_ASSERT_MSG(application.shm, "Wayland SHM not available");
if (application.shm == NULL)
{
return;
}
LV_ASSERT_MSG((application.format != 0xFFFFFFFF), "WL_SHM_FORMAT not available");
if (application.format == 0xFFFFFFFF)
{
return;
}
#ifdef LV_WAYLAND_CLIENT_SIDE_DECORATIONS
const char * env_disable_decorations = getenv("LV_WAYLAND_DISABLE_WINDOWDECORATION");
application.opt_disable_decorations = ((env_disable_decorations != NULL) &&
(env_disable_decorations[0] != '0'));
#endif
_lv_ll_init(&application.window_ll, sizeof(struct window));
application.cycle_timer = lv_timer_create(_lv_wayland_cycle, LV_WAYLAND_CYCLE_PERIOD, NULL);
LV_ASSERT_MSG(application.cycle_timer, "failed to create cycle timer");
if (!application.cycle_timer)
{
return;
}
}
/**
* De-initialize Wayland driver
*/
void lv_wayland_deinit(void)
{
struct window *window = NULL;
_LV_LL_READ(&application.window_ll, window)
{
if (!window->closed)
{
destroy_window(window);
}
}
if (application.shm)
{
wl_shm_destroy(application.shm);
}
#if LV_WAYLAND_XDG_SHELL
if (application.xdg_wm)
{
xdg_wm_base_destroy(application.xdg_wm);
}
#endif
#if LV_WAYLAND_WL_SHELL
if (application.wl_shell)
{
wl_shell_destroy(application.wl_shell);
}
#endif
if (application.wl_seat)
{
wl_seat_destroy(application.wl_seat);
}
if (application.subcompositor)
{
wl_subcompositor_destroy(application.subcompositor);
}
if (application.compositor)
{
wl_compositor_destroy(application.compositor);
}
wl_registry_destroy(application.registry);
wl_display_flush(application.display);
wl_display_disconnect(application.display);
_lv_ll_clear(&application.window_ll);
}
/**
* Create wayland window
* @param hor_res initial horizontal window size in pixels
* @param ver_res initial vertical window size in pixels
* @param title window title
* @param close_cb function to be called when the window gets closed by the user (optional)
* @return new display backed by a Wayland window, or NULL on error
*/
lv_disp_t * lv_wayland_create_window(lv_coord_t hor_res, lv_coord_t ver_res, char *title,
lv_wayland_display_close_f_t close_cb)
{
lv_color_t * buf1 = NULL;
struct window *window;
window = create_window(&application, hor_res, ver_res, title);
if (!window)
{
LV_LOG_ERROR("failed to create wayland window");
return NULL;
}
window->close_cb = close_cb;
/* Initialize draw buffer */
buf1 = lv_mem_alloc(hor_res * ver_res * sizeof(lv_color_t));
if (!buf1)
{
LV_LOG_ERROR("failed to allocate draw buffer");
destroy_window(window);
return NULL;
}
lv_disp_draw_buf_init(&window->lv_disp_draw_buf, buf1, NULL, hor_res * ver_res);
/* Initialize display driver */
lv_disp_drv_init(&window->lv_disp_drv);
window->lv_disp_drv.draw_buf = &window->lv_disp_draw_buf;
window->lv_disp_drv.hor_res = hor_res;
window->lv_disp_drv.ver_res = ver_res;
window->lv_disp_drv.flush_cb = _lv_wayland_flush;
window->lv_disp_drv.user_data = window;
/* Register display */
window->lv_disp = lv_disp_drv_register(&window->lv_disp_drv);
/* Register input */
lv_indev_drv_init(&window->lv_indev_drv_pointer);
window->lv_indev_drv_pointer.type = LV_INDEV_TYPE_POINTER;
window->lv_indev_drv_pointer.read_cb = _lv_wayland_pointer_read;
window->lv_indev_drv_pointer.disp = window->lv_disp;
window->lv_indev_pointer = lv_indev_drv_register(&window->lv_indev_drv_pointer);
if (!window->lv_indev_pointer)
{
LV_LOG_ERROR("failed to register pointer indev");
}
lv_indev_drv_init(&window->lv_indev_drv_pointeraxis);
window->lv_indev_drv_pointeraxis.type = LV_INDEV_TYPE_ENCODER;
window->lv_indev_drv_pointeraxis.read_cb = _lv_wayland_pointeraxis_read;
window->lv_indev_drv_pointeraxis.disp = window->lv_disp;
window->lv_indev_pointeraxis = lv_indev_drv_register(&window->lv_indev_drv_pointeraxis);
if (!window->lv_indev_pointeraxis)
{
LV_LOG_ERROR("failed to register pointeraxis indev");
}
lv_indev_drv_init(&window->lv_indev_drv_touch);
window->lv_indev_drv_touch.type = LV_INDEV_TYPE_POINTER;
window->lv_indev_drv_touch.read_cb = _lv_wayland_touch_read;
window->lv_indev_drv_touch.disp = window->lv_disp;
window->lv_indev_touch = lv_indev_drv_register(&window->lv_indev_drv_touch);
if (!window->lv_indev_touch)
{
LV_LOG_ERROR("failed to register touch indev");
}
lv_indev_drv_init(&window->lv_indev_drv_keyboard);
window->lv_indev_drv_keyboard.type = LV_INDEV_TYPE_KEYPAD;
window->lv_indev_drv_keyboard.read_cb = _lv_wayland_keyboard_read;
window->lv_indev_drv_keyboard.disp = window->lv_disp;
window->lv_indev_keyboard = lv_indev_drv_register(&window->lv_indev_drv_keyboard);
if (!window->lv_indev_keyboard)
{
LV_LOG_ERROR("failed to register keyboard indev");
}
return window->lv_disp;
}
/**
* Close wayland window
* @param disp LVGL display using window to be closed
*/
void lv_wayland_close_window(lv_disp_t * disp)
{
struct window *window = disp->driver->user_data;
if (!window || window->closed)
{
return;
}
window->shall_close = true;
window->close_cb = NULL;
}
/**
* Set/unset window fullscreen mode
* @param disp LVGL display using window to be set/unset fullscreen
* @param fullscreen requested status (true = fullscreen)
*/
void lv_wayland_window_set_fullscreen(lv_disp_t * disp, bool fullscreen)
{
struct window *window = disp->driver->user_data;
if (!window || window->closed)
{
return;
}
if (window->fullscreen != fullscreen)
{
if (0)
{
// Needed for #if madness below
}
#if LV_WAYLAND_XDG_SHELL
else if (window->xdg_toplevel)
{
if (fullscreen)
{
xdg_toplevel_set_fullscreen(window->xdg_toplevel, NULL);
}
else
{
xdg_toplevel_unset_fullscreen(window->xdg_toplevel);
}
window->fullscreen = fullscreen;
window->flush_pending = true;
}
#endif
#if LV_WAYLAND_WL_SHELL
else if (window->wl_shell_surface)
{
if (fullscreen)
{
wl_shell_surface_set_fullscreen(window->wl_shell_surface,
WL_SHELL_SURFACE_FULLSCREEN_METHOD_SCALE,
0, NULL);
}
else
{
wl_shell_surface_set_toplevel(window->wl_shell_surface);
}
window->fullscreen = fullscreen;
window->flush_pending = true;
}
#endif
else
{
LV_LOG_WARN("Wayland fullscreen mode not supported");
}
}
}
/**
* Get pointer input device for given LVGL display
* @param disp LVGL display
* @return input device connected to pointer events, or NULL on error
*/
lv_indev_t * lv_wayland_get_pointer(lv_disp_t * disp)
{
struct window *window = disp->driver->user_data;
if (!window)
{
return NULL;
}
return window->lv_indev_pointer;
}
/**
* Get pointer axis input device for given LVGL display
* @param disp LVGL display
* @return input device connected to pointer axis events, or NULL on error
*/
lv_indev_t * lv_wayland_get_pointeraxis(lv_disp_t * disp)
{
struct window *window = disp->driver->user_data;
if (!window)
{
return NULL;
}
return window->lv_indev_pointeraxis;
}
/**
* Get keyboard input device for given LVGL display
* @param disp LVGL display
* @return input device connected to keyboard, or NULL on error
*/
lv_indev_t * lv_wayland_get_keyboard(lv_disp_t * disp)
{
struct window *window = disp->driver->user_data;
if (!window)
{
return NULL;
}
return window->lv_indev_keyboard;
}
/**
* Get touchscreen input device for given LVGL display
* @param disp LVGL display
* @return input device connected to touchscreen, or NULL on error
*/
lv_indev_t * lv_wayland_get_touchscreen(lv_disp_t * disp)
{
struct window *window = disp->driver->user_data;
if (!window)
{
return NULL;
}
return window->lv_indev_touch;
}
#endif // USE_WAYLAND
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