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Nuklear/demo/wayland_rawfb/main.c

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#define _GNU_SOURCE // for O_TMPFILE
#define NK_INCLUDE_FIXED_TYPES
#define NK_INCLUDE_STANDARD_IO
#define NK_INCLUDE_STANDARD_VARARGS
#define NK_INCLUDE_DEFAULT_ALLOCATOR
#define NK_IMPLEMENTATION
#define NK_INCLUDE_FONT_BAKING
#define NK_INCLUDE_DEFAULT_FONT
#define NK_INCLUDE_SOFTWARE_FONT
#include <wayland-client.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <math.h>
#include <time.h>
#include <sys/time.h>
#include "../../nuklear.h"
#include "xdg-shell.h"
#include "nuklear_raw_wayland.h"
#define DTIME 20
/* ===============================================================
*
* EXAMPLE
*
* ===============================================================*/
/* This are some code examples to provide a small overview of what can be
* done with this library. To try out an example uncomment the defines */
/*#define INCLUDE_ALL */
/*#define INCLUDE_STYLE */
/*#define INCLUDE_CALCULATOR */
/*#define INCLUDE_CANVAS */
/*#define INCLUDE_OVERVIEW */
/*#define INCLUDE_NODE_EDITOR */
#ifdef INCLUDE_ALL
#define INCLUDE_STYLE
#define INCLUDE_CALCULATOR
#define INCLUDE_CANVAS
#define INCLUDE_OVERVIEW
#define INCLUDE_NODE_EDITOR
#endif
#ifdef INCLUDE_STYLE
#include "../../demo/common/style.c"
#endif
#ifdef INCLUDE_CALCULATOR
#include "../../demo/common/calculator.c"
#endif
#ifdef INCLUDE_CANVAS
#include "../../demo/common/canvas.c"
#endif
#ifdef INCLUDE_OVERVIEW
#include "../../demo/common/overview.c"
#endif
#ifdef INCLUDE_NODE_EDITOR
#include "../../demo/common/node_editor.c"
#endif
//WAYLAND OUTPUT INTERFACE
static void nk_wayland_output_cb_geometry(void *data, struct wl_output *wl_output, int x, int y, int w, int h, int subpixel, const char *make, const char *model, int transform)
{
NK_UNUSED(data);
NK_UNUSED(wl_output);
NK_UNUSED(subpixel);
NK_UNUSED(make);
NK_UNUSED(model);
NK_UNUSED(transform);
printf("wl_output geometry x=%d, y=%d, w=%d, h=%d make=%s, model=%s \n", x,y,w,h, make, model);
}
static void nk_wayland_output_cb_mode(void *data, struct wl_output *wl_output, unsigned int flags, int w, int h, int refresh)
{
NK_UNUSED(data);
NK_UNUSED(wl_output);
NK_UNUSED(flags);
NK_UNUSED(w);
NK_UNUSED(h);
NK_UNUSED(refresh);
}
static void nk_wayland_output_cb_done(void *data, struct wl_output *output)
{
NK_UNUSED(data);
NK_UNUSED(output);
}
static void nk_wayland_output_cb_scale(void *data, struct wl_output *output, int scale)
{
NK_UNUSED(data);
NK_UNUSED(output);
NK_UNUSED(scale);
}
static const struct wl_output_listener nk_wayland_output_listener =
{
&nk_wayland_output_cb_geometry,
&nk_wayland_output_cb_mode,
&nk_wayland_output_cb_done,
&nk_wayland_output_cb_scale
};
//-------------------------------------------------------------------- endof WAYLAND OUTPUT INTERFACE
//WAYLAND POINTER INTERFACE (mouse/touchpad)
static void nk_wayland_pointer_enter (void *data, struct wl_pointer *pointer, uint32_t serial, struct wl_surface *surface, wl_fixed_t surface_x, wl_fixed_t surface_y)
{
NK_UNUSED(data);
NK_UNUSED(pointer);
NK_UNUSED(serial);
NK_UNUSED(surface);
NK_UNUSED(surface_x);
NK_UNUSED(surface_y);
}
static void nk_wayland_pointer_leave (void *data, struct wl_pointer *pointer, uint32_t serial, struct wl_surface *surface)
{
NK_UNUSED(data);
NK_UNUSED(pointer);
NK_UNUSED(serial);
NK_UNUSED(surface);
}
static void nk_wayland_pointer_motion (void *data, struct wl_pointer *pointer, uint32_t time, wl_fixed_t x, wl_fixed_t y)
{
struct nk_wayland* win = (struct nk_wayland*)data;
NK_UNUSED(pointer);
NK_UNUSED(time);
win->mouse_pointer_x = wl_fixed_to_int(x);
win->mouse_pointer_y = wl_fixed_to_int(y);
nk_input_motion(&(win->ctx), win->mouse_pointer_x, win->mouse_pointer_y);
}
static void nk_wayland_pointer_button (void *data, struct wl_pointer *pointer, uint32_t serial, uint32_t time, uint32_t button, uint32_t state)
{
struct nk_wayland* win = (struct nk_wayland*)data;
NK_UNUSED(pointer);
NK_UNUSED(serial);
NK_UNUSED(time);
if (button == 272){ //left mouse button
if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
// printf("nk_input_button x=%d, y=%d press: 1 \n", win->mouse_pointer_x, win->mouse_pointer_y);
nk_input_button(&(win->ctx), NK_BUTTON_LEFT, win->mouse_pointer_x, win->mouse_pointer_y, 1);
} else if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
nk_input_button(&(win->ctx), NK_BUTTON_LEFT, win->mouse_pointer_x, win->mouse_pointer_y, 0);
}
}
}
static void nk_wayland_pointer_axis (void *data, struct wl_pointer *pointer, uint32_t time, uint32_t axis, wl_fixed_t value)
{
NK_UNUSED(data);
NK_UNUSED(pointer);
NK_UNUSED(time);
NK_UNUSED(axis);
NK_UNUSED(value);
}
static struct wl_pointer_listener nk_wayland_pointer_listener =
{
&nk_wayland_pointer_enter,
&nk_wayland_pointer_leave,
&nk_wayland_pointer_motion,
&nk_wayland_pointer_button,
&nk_wayland_pointer_axis,
NULL,
NULL,
NULL,
NULL
};
//-------------------------------------------------------------------- endof WAYLAND POINTER INTERFACE
//WAYLAND KEYBOARD INTERFACE
static void nk_wayland_keyboard_keymap (void *data, struct wl_keyboard *keyboard, uint32_t format, int32_t fd, uint32_t size)
{
NK_UNUSED(data);
NK_UNUSED(keyboard);
NK_UNUSED(format);
NK_UNUSED(fd);
NK_UNUSED(size);
}
static void nk_wayland_keyboard_enter (void *data, struct wl_keyboard *keyboard, uint32_t serial, struct wl_surface *surface, struct wl_array *keys)
{
NK_UNUSED(data);
NK_UNUSED(keyboard);
NK_UNUSED(serial);
NK_UNUSED(surface);
NK_UNUSED(keys);
}
static void nk_wayland_keyboard_leave (void *data, struct wl_keyboard *keyboard, uint32_t serial, struct wl_surface *surface)
{
NK_UNUSED(data);
NK_UNUSED(keyboard);
NK_UNUSED(serial);
NK_UNUSED(surface);
}
static void nk_wayland_keyboard_key (void *data, struct wl_keyboard *keyboard, uint32_t serial, uint32_t time, uint32_t key, uint32_t state)
{
NK_UNUSED(data);
NK_UNUSED(keyboard);
NK_UNUSED(serial);
NK_UNUSED(time);
NK_UNUSED(state);
printf("key: %d \n", key);
}
static void nk_wayland_keyboard_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)
{
NK_UNUSED(data);
NK_UNUSED(keyboard);
NK_UNUSED(serial);
NK_UNUSED(mods_depressed);
NK_UNUSED(mods_latched);
NK_UNUSED(mods_locked);
NK_UNUSED(group);
}
static struct wl_keyboard_listener nk_wayland_keyboard_listener =
{
&nk_wayland_keyboard_keymap,
&nk_wayland_keyboard_enter,
&nk_wayland_keyboard_leave,
&nk_wayland_keyboard_key,
&nk_wayland_keyboard_modifiers,
NULL
};
//-------------------------------------------------------------------- endof WAYLAND KEYBOARD INTERFACE
//WAYLAND SEAT INTERFACE
static void seat_capabilities (void *data, struct wl_seat *seat, uint32_t capabilities)
{
struct nk_wayland* win = (struct nk_wayland*)data;
if (capabilities & WL_SEAT_CAPABILITY_POINTER) {
struct wl_pointer *pointer = wl_seat_get_pointer (seat);
wl_pointer_add_listener (pointer, &nk_wayland_pointer_listener, win);
}
if (capabilities & WL_SEAT_CAPABILITY_KEYBOARD) {
struct wl_keyboard *keyboard = wl_seat_get_keyboard (seat);
wl_keyboard_add_listener (keyboard, &nk_wayland_keyboard_listener, win);
}
}
static struct wl_seat_listener seat_listener =
{
&seat_capabilities,
NULL
};
//-------------------------------------------------------------------- endof WAYLAND SEAT INTERFACE
// WAYLAND SHELL INTERFACE
static void nk_wayland_xdg_wm_base_ping (void *data, struct xdg_wm_base *xdg_wm_base, uint32_t serial)
{
NK_UNUSED(data);
xdg_wm_base_pong (xdg_wm_base, serial);
}
static struct xdg_wm_base_listener nk_wayland_xdg_wm_base_listener =
{
&nk_wayland_xdg_wm_base_ping
};
static void nk_wayland_xdg_surface_configure (void *data, struct xdg_surface *xdg_surface, uint32_t serial)
{
NK_UNUSED(data);
xdg_surface_ack_configure(xdg_surface, serial);
}
static struct xdg_surface_listener nk_wayland_xdg_surface_listener =
{
&nk_wayland_xdg_surface_configure,
};
static void nk_wayland_xdg_toplevel_configure (void *data, struct xdg_toplevel *xdg_toplevel, int32_t width, int32_t height, struct wl_array *states)
{
NK_UNUSED(data);
NK_UNUSED(xdg_toplevel);
NK_UNUSED(width);
NK_UNUSED(height);
NK_UNUSED(states);
}
static void nk_wayland_xdg_toplevel_close (void *data, struct xdg_toplevel *xdg_toplevel)
{
NK_UNUSED(data);
NK_UNUSED(xdg_toplevel);
}
static struct xdg_toplevel_listener nk_wayland_xdg_toplevel_listener =
{
&nk_wayland_xdg_toplevel_configure,
&nk_wayland_xdg_toplevel_close
};
//--------------------------------------------------------------------- endof WAYLAND SHELL INTERFACE
// WAYLAND REGISTRY INTERFACE
static void nk_wayland_registry_add_object (void *data, struct wl_registry *registry, uint32_t name, const char *interface, uint32_t version)
{
struct nk_wayland* win = (struct nk_wayland*)data;
NK_UNUSED(version);
//printf("looking for %s interface \n", interface);
if (!strcmp(interface,"wl_compositor")) {
win->compositor = wl_registry_bind (registry, name, &wl_compositor_interface, 1);
} else if (!strcmp(interface,"xdg_wm_base")) {
win->xdg_wm_base = wl_registry_bind (registry, name, &xdg_wm_base_interface, 1);
xdg_wm_base_add_listener (win->xdg_wm_base, &nk_wayland_xdg_wm_base_listener, win);
} else if (!strcmp(interface,"wl_shm")) {
win->wl_shm = wl_registry_bind (registry, name, &wl_shm_interface, 1);
} else if (!strcmp(interface,"wl_seat")) {
win->seat = wl_registry_bind (registry, name, &wl_seat_interface, 1);
wl_seat_add_listener (win->seat, &seat_listener, win);
} else if (!strcmp(interface, "wl_output")) {
struct wl_output *wl_output = wl_registry_bind(registry, name, &wl_output_interface, 1);
wl_output_add_listener(wl_output, &nk_wayland_output_listener, NULL);
}
}
static void nk_wayland_registry_remove_object (void *data, struct wl_registry *registry, uint32_t name)
{
NK_UNUSED(data);
NK_UNUSED(registry);
NK_UNUSED(name);
}
static struct wl_registry_listener nk_wayland_registry_listener =
{
&nk_wayland_registry_add_object,
&nk_wayland_registry_remove_object
};
//------------------------------------------------------------------------------------------------ endof WAYLAND REGISTRY INTERFACE
static void nk_wayland_init(struct nk_wayland* win)
{
const void *tex;
win->font_tex.pixels = win->tex_scratch;
win->font_tex.format = NK_FONT_ATLAS_ALPHA8;
win->font_tex.w = win->font_tex.h = 0;
if (0 == nk_init_default(&(win->ctx), 0)) {
return;
}
nk_font_atlas_init_default(&(win->atlas));
nk_font_atlas_begin(&(win->atlas));
tex = nk_font_atlas_bake(&(win->atlas), &(win->font_tex.w), &(win->font_tex.h), win->font_tex.format);
if (!tex) {
return;
}
switch(win->font_tex.format) {
case NK_FONT_ATLAS_ALPHA8:
win->font_tex.pitch = win->font_tex.w * 1;
break;
case NK_FONT_ATLAS_RGBA32:
win->font_tex.pitch = win->font_tex.w * 4;
break;
};
/* Store the font texture in tex scratch memory */
memcpy(win->font_tex.pixels, tex, win->font_tex.pitch * win->font_tex.h);
nk_font_atlas_end(&(win->atlas), nk_handle_ptr(NULL), NULL);
if (win->atlas.default_font)
nk_style_set_font(&(win->ctx), &(win->atlas.default_font->handle));
nk_style_load_all_cursors(&(win->ctx), win->atlas.cursors);
nk_wayland_scissor(win, 0, 0, win->width, win->height);
}
static void nk_wayland_deinit(struct nk_wayland *win)
{
xdg_toplevel_destroy (win->xdg_toplevel);
xdg_surface_destroy (win->xdg_surface);
xdg_wm_base_destroy (win->xdg_wm_base);
wl_surface_destroy (win->surface);
}
static long timestamp(void)
{
struct timeval tv;
if (gettimeofday(&tv, NULL) < 0) return 0;
return (long)((long)tv.tv_sec * 1000 + (long)tv.tv_usec/1000);
}
static void sleep_for(long t)
{
struct timespec req;
const time_t sec = (int)(t/1000);
const long ms = t - (sec * 1000);
req.tv_sec = sec;
req.tv_nsec = ms * 1000000L;
while(-1 == nanosleep(&req, &req));
}
static void nk_wayland_surf_clear(struct nk_wayland* win)
{
int x, y;
int pix_idx;
for (y = 0; y < win->height; y++){
for (x = 0; x < win->width; x++){
pix_idx = y * win->width + x;
win->data[pix_idx] = 0xFF000000;
}
}
}
//This causes the screen to refresh
static const struct wl_callback_listener frame_listener;
static void redraw(void *data, struct wl_callback *callback, uint32_t time)
{
// printf("redrawing.. 1\n");
struct nk_wayland* win = (struct nk_wayland*)data;
NK_UNUSED(callback);
NK_UNUSED(time);
wl_callback_destroy(win->frame_callback);
wl_surface_damage(win->surface, 0, 0, WIDTH, HEIGHT);
win->frame_callback = wl_surface_frame(win->surface);
wl_surface_attach(win->surface, win->front_buffer, 0, 0);
wl_callback_add_listener(win->frame_callback, &frame_listener, win);
wl_surface_commit(win->surface);
}
static const struct wl_callback_listener frame_listener = {
redraw
};
int main ()
{
long dt;
long started;
struct nk_wayland nk_wayland_ctx;
struct wl_registry *registry;
int running = 1;
//1. Initialize display
nk_wayland_ctx.display = wl_display_connect (NULL);
if (nk_wayland_ctx.display == NULL) {
printf("no wayland display found. do you have wayland composer running? \n");
return -1;
}
registry = wl_display_get_registry (nk_wayland_ctx.display);
wl_registry_add_listener (registry, &nk_wayland_registry_listener, &nk_wayland_ctx);
wl_display_roundtrip (nk_wayland_ctx.display);
//2. Create Window
nk_wayland_ctx.width = WIDTH;
nk_wayland_ctx.height = HEIGHT;
nk_wayland_ctx.surface = wl_compositor_create_surface (nk_wayland_ctx.compositor);
nk_wayland_ctx.xdg_surface = xdg_wm_base_get_xdg_surface(nk_wayland_ctx.xdg_wm_base, nk_wayland_ctx.surface);
xdg_surface_add_listener (nk_wayland_ctx.xdg_surface, &nk_wayland_xdg_surface_listener, &nk_wayland_ctx);
nk_wayland_ctx.xdg_toplevel = xdg_surface_get_toplevel(nk_wayland_ctx.xdg_surface);
xdg_toplevel_add_listener (nk_wayland_ctx.xdg_toplevel, &nk_wayland_xdg_toplevel_listener, &nk_wayland_ctx);
nk_wayland_ctx.frame_callback = wl_surface_frame(nk_wayland_ctx.surface);
wl_callback_add_listener(nk_wayland_ctx.frame_callback, &frame_listener, &nk_wayland_ctx);
wl_surface_commit (nk_wayland_ctx.surface);
size_t size = WIDTH * HEIGHT * 4;
char *xdg_runtime_dir = getenv ("XDG_RUNTIME_DIR");
int fd = open (xdg_runtime_dir, O_TMPFILE|O_RDWR|O_EXCL, 0600);
ftruncate (fd, size);
nk_wayland_ctx.data = mmap (NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
struct wl_shm_pool *pool = wl_shm_create_pool (nk_wayland_ctx.wl_shm, fd, size);
nk_wayland_ctx.front_buffer = wl_shm_pool_create_buffer (pool, 0, WIDTH, HEIGHT, WIDTH*4, WL_SHM_FORMAT_XRGB8888);
wl_shm_pool_destroy (pool);
close (fd);
wl_display_roundtrip (nk_wayland_ctx.display);
//3. Clear window and start rendering loop
nk_wayland_surf_clear(&nk_wayland_ctx);
wl_surface_attach (nk_wayland_ctx.surface, nk_wayland_ctx.front_buffer, 0, 0);
wl_surface_commit (nk_wayland_ctx.surface);
nk_wayland_init(&nk_wayland_ctx);
//4. rendering UI
while (running) {
started = timestamp();
// GUI
if (nk_begin(&(nk_wayland_ctx.ctx), "Demo", nk_rect(50, 50, 200, 200),
NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|
NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) {
enum {EASY, HARD};
static int op = EASY;
static int property = 20;
nk_layout_row_static(&(nk_wayland_ctx.ctx), 30, 80, 1);
if (nk_button_label(&(nk_wayland_ctx.ctx), "button")){
printf("button pressed\n");
}
nk_layout_row_dynamic(&(nk_wayland_ctx.ctx), 30, 2);
if (nk_option_label(&(nk_wayland_ctx.ctx), "easy", op == EASY)) op = EASY;
if (nk_option_label(&(nk_wayland_ctx.ctx), "hard", op == HARD)) op = HARD;
nk_layout_row_dynamic(&(nk_wayland_ctx.ctx), 25, 1);
nk_property_int(&(nk_wayland_ctx.ctx), "Compression:", 0, &property, 100, 10, 1);
}
nk_end(&(nk_wayland_ctx.ctx));
if (nk_window_is_closed(&(nk_wayland_ctx.ctx), "Demo")) break;
/* -------------- EXAMPLES ---------------- */
#ifdef INCLUDE_CALCULATOR
calculator(&(nk_wayland_ctx.ctx));
#endif
#ifdef INCLUDE_CANVAS
canvas(&(nk_wayland_ctx.ctx));
#endif
#ifdef INCLUDE_OVERVIEW
overview(&(nk_wayland_ctx.ctx));
#endif
#ifdef INCLUDE_NODE_EDITOR
node_editor(&(nk_wayland_ctx.ctx));
#endif
/* ----------------------------------------- */
// Draw framebuffer
nk_wayland_render(&nk_wayland_ctx, nk_rgb(30,30,30), 1);
//handle wayland stuff (send display to FB & get inputs)
nk_input_begin(&(nk_wayland_ctx.ctx));
wl_display_dispatch(nk_wayland_ctx.display);
nk_input_end(&(nk_wayland_ctx.ctx));
// Timing
dt = timestamp() - started;
if (dt < DTIME)
sleep_for(DTIME - dt);
}
nk_wayland_deinit (&nk_wayland_ctx);
wl_display_disconnect (nk_wayland_ctx.display);
return 0;
}
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