Add pure C wayland demo
This implementation uses software rendering in native wayland client.
This commit is contained in:
skoperst
parent
bb7c2519a3
commit
a88cd062b7
9
demo/wayland_rawfb/Makefile
Normal file
9
demo/wayland_rawfb/Makefile
Normal file
@ -0,0 +1,9 @@
|
||||
WAYLAND=`pkg-config wayland-client --cflags --libs`
|
||||
CFLAGS?=-std=c11 -Wall -Werror -O3 -fvisibility=hidden
|
||||
|
||||
hello_wayland: main.c
|
||||
$(CC) -o demo *.c $(WAYLAND) -lrt -lm
|
||||
|
||||
|
||||
clean:
|
||||
$(RM) demo
|
||||
427
demo/wayland_rawfb/main.c
Normal file
427
demo/wayland_rawfb/main.c
Normal file
@ -0,0 +1,427 @@
|
||||
#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 "nuklear_raw_wayland.h"
|
||||
|
||||
|
||||
#define DTIME 20
|
||||
|
||||
|
||||
//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)
|
||||
{
|
||||
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)
|
||||
{
|
||||
}
|
||||
|
||||
static void nk_wayland_output_cb_done(void *data, struct wl_output *output)
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
static void nk_wayland_output_cb_scale(void *data, struct wl_output *output, int 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)
|
||||
{
|
||||
}
|
||||
|
||||
static void nk_wayland_pointer_leave (void *data, struct wl_pointer *pointer, uint32_t serial, struct wl_surface *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;
|
||||
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;
|
||||
|
||||
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)
|
||||
{
|
||||
}
|
||||
|
||||
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
|
||||
};
|
||||
//-------------------------------------------------------------------- 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)
|
||||
{
|
||||
}
|
||||
|
||||
static void nk_wayland_keyboard_enter (void *data, struct wl_keyboard *keyboard, uint32_t serial, struct wl_surface *surface, struct wl_array *keys)
|
||||
{
|
||||
}
|
||||
|
||||
static void nk_wayland_keyboard_leave (void *data, struct wl_keyboard *keyboard, uint32_t serial, struct wl_surface *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)
|
||||
{
|
||||
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)
|
||||
{
|
||||
}
|
||||
|
||||
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
|
||||
};
|
||||
//-------------------------------------------------------------------- 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
|
||||
};
|
||||
//-------------------------------------------------------------------- endof WAYLAND SEAT INTERFACE
|
||||
|
||||
// WAYLAND SHELL INTERFACE
|
||||
static void nk_wayland_shell_surface_ping (void *data, struct wl_shell_surface *shell_surface, uint32_t serial)
|
||||
{
|
||||
wl_shell_surface_pong (shell_surface, serial);
|
||||
}
|
||||
|
||||
static void nk_wayland_shell_surface_configure (void *data, struct wl_shell_surface *shell_surface, uint32_t edges, int32_t width, int32_t height)
|
||||
{
|
||||
}
|
||||
|
||||
static void nk_wayland_shell_surface_popup_done (void *data, struct wl_shell_surface *shell_surface)
|
||||
{
|
||||
}
|
||||
|
||||
static struct wl_shell_surface_listener nk_wayland_shell_surface_listener =
|
||||
{
|
||||
&nk_wayland_shell_surface_ping,
|
||||
&nk_wayland_shell_surface_configure,
|
||||
&nk_wayland_shell_surface_popup_done
|
||||
};
|
||||
//--------------------------------------------------------------------- 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;
|
||||
|
||||
//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,"wl_shell")) {
|
||||
win->shell = wl_registry_bind (registry, name, &wl_shell_interface, 1);
|
||||
|
||||
} 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)
|
||||
{
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
wl_shell_surface_destroy (win->shell_surface);
|
||||
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;
|
||||
struct nk_color col_red = {0xFF,0x00,0x00,0xA0}; //r,g,b,a
|
||||
struct nk_color col_green = {0x00,0xFF,0x00,0xA0}; //r,g,b,a
|
||||
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_backend *backend;
|
||||
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.shell_surface = wl_shell_get_shell_surface (nk_wayland_ctx.shell, nk_wayland_ctx.surface);
|
||||
wl_shell_surface_add_listener (nk_wayland_ctx.shell_surface, &nk_wayland_shell_surface_listener, &nk_wayland_ctx);
|
||||
wl_shell_surface_set_toplevel (nk_wayland_ctx.shell_surface);
|
||||
|
||||
|
||||
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);
|
||||
|
||||
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);
|
||||
|
||||
|
||||
|
||||
|
||||
//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(&rawfb->ctx);
|
||||
//#endif
|
||||
// #ifdef INCLUDE_OVERVIEW
|
||||
// overview(&rawfb->ctx);
|
||||
// #endif
|
||||
// #ifdef INCLUDE_NODE_EDITOR
|
||||
// node_editor(&rawfb->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;
|
||||
}
|
||||
861
demo/wayland_rawfb/nuklear_raw_wayland.h
Normal file
861
demo/wayland_rawfb/nuklear_raw_wayland.h
Normal file
@ -0,0 +1,861 @@
|
||||
#ifndef NK_RAW_WAYLAND_H_
|
||||
#define NK_RAW_WAYLAND_H_
|
||||
|
||||
#define WIDTH 800
|
||||
#define HEIGHT 600
|
||||
|
||||
#ifndef MIN
|
||||
#define MIN(a,b) ((a) < (b) ? (a) : (b))
|
||||
#endif
|
||||
#ifndef MAX
|
||||
#define MAX(a,b) ((a) < (b) ? (b) : (a))
|
||||
#endif
|
||||
|
||||
typedef enum wayland_pixel_layout {
|
||||
PIXEL_LAYOUT_XRGB_8888,
|
||||
PIXEL_LAYOUT_RGBX_8888,
|
||||
} wayland_pl;
|
||||
|
||||
struct wayland_img {
|
||||
void *pixels;
|
||||
int w, h, pitch;
|
||||
wayland_pl pl;
|
||||
enum nk_font_atlas_format format;
|
||||
};
|
||||
|
||||
struct nk_wayland{
|
||||
/*wayland vars*/
|
||||
struct wl_display *display;
|
||||
struct wl_compositor *compositor;
|
||||
struct wl_shell *shell;
|
||||
struct wl_shm *wl_shm;
|
||||
struct wl_seat* seat;
|
||||
struct wl_callback *frame_callback;
|
||||
struct wl_surface *surface;
|
||||
struct wl_shell_surface *shell_surface;
|
||||
struct wl_buffer *front_buffer;
|
||||
|
||||
|
||||
/*nuklear vars*/
|
||||
struct nk_context ctx;
|
||||
struct nk_rect scissors;
|
||||
struct nk_font_atlas atlas;
|
||||
struct wayland_img font_tex;
|
||||
int32_t width, height;
|
||||
int32_t *data;
|
||||
int mouse_pointer_x;
|
||||
int mouse_pointer_y;
|
||||
uint8_t tex_scratch[512 * 512];
|
||||
|
||||
};
|
||||
|
||||
static uint32_t nk_color_to_xrgb8888(struct nk_color col)
|
||||
{
|
||||
return (col.a << 24) + (col.r << 16) + (col.g << 8) + col.b;
|
||||
}
|
||||
|
||||
static struct nk_color nk_wayland_int2color(const unsigned int i, wayland_pl pl)
|
||||
{
|
||||
struct nk_color col = {0,0,0,0};
|
||||
|
||||
switch (pl) {
|
||||
case PIXEL_LAYOUT_RGBX_8888:
|
||||
col.r = (i >> 24) & 0xff;
|
||||
col.g = (i >> 16) & 0xff;
|
||||
col.b = (i >> 8) & 0xff;
|
||||
col.a = i & 0xff;
|
||||
break;
|
||||
case PIXEL_LAYOUT_XRGB_8888:
|
||||
col.a = (i >> 24) & 0xff;
|
||||
col.r = (i >> 16) & 0xff;
|
||||
col.g = (i >> 8) & 0xff;
|
||||
col.b = i & 0xff;
|
||||
break;
|
||||
|
||||
default:
|
||||
perror("nk_rawfb_int2color(): Unsupported pixel layout.\n");
|
||||
break;
|
||||
}
|
||||
return col;
|
||||
}
|
||||
|
||||
static unsigned int nk_wayland_color2int(const struct nk_color c, wayland_pl pl)
|
||||
{
|
||||
unsigned int res = 0;
|
||||
|
||||
switch (pl) {
|
||||
case PIXEL_LAYOUT_RGBX_8888:
|
||||
res |= c.r << 24;
|
||||
res |= c.g << 16;
|
||||
res |= c.b << 8;
|
||||
res |= c.a;
|
||||
break;
|
||||
|
||||
case PIXEL_LAYOUT_XRGB_8888:
|
||||
res |= c.a << 24;
|
||||
res |= c.r << 16;
|
||||
res |= c.g << 8;
|
||||
res |= c.b;
|
||||
break;
|
||||
|
||||
default:
|
||||
perror("nk_rawfb_color2int(): Unsupported pixel layout.\n");
|
||||
break;
|
||||
}
|
||||
return (res);
|
||||
}
|
||||
|
||||
static void nk_wayland_ctx_setpixel(const struct nk_wayland* win,
|
||||
const short x0, const short y0, const struct nk_color col)
|
||||
{
|
||||
uint32_t c = nk_color_to_xrgb8888(col);
|
||||
uint32_t *pixels = win->data;
|
||||
unsigned int *ptr;
|
||||
|
||||
pixels += (y0 * win->width);
|
||||
ptr = (unsigned int *)pixels + x0;
|
||||
|
||||
if (y0 < win->scissors.h && y0 >= win->scissors.y && x0 >= win->scissors.x && x0 < win->scissors.w){
|
||||
*ptr = c;
|
||||
}else {
|
||||
printf("out of bound! \n");
|
||||
}
|
||||
}
|
||||
|
||||
static void nk_wayland_fill_polygon(const struct nk_wayland* win, const struct nk_vec2i *pnts, int count, const struct nk_color col)
|
||||
{
|
||||
int i = 0;
|
||||
//#define MAX_POINTS 64
|
||||
int left = 10000, top = 10000, bottom = 0, right = 0;
|
||||
int nodes, nodeX[1024], pixelX, pixelY, j, swap ;
|
||||
|
||||
if (count == 0) return;
|
||||
if (count > 1024)
|
||||
count = 1024;
|
||||
|
||||
/* Get polygon dimensions */
|
||||
for (i = 0; i < count; i++) {
|
||||
if (left > pnts[i].x)
|
||||
left = pnts[i].x;
|
||||
if (right < pnts[i].x)
|
||||
right = pnts[i].x;
|
||||
if (top > pnts[i].y)
|
||||
top = pnts[i].y;
|
||||
if (bottom < pnts[i].y)
|
||||
bottom = pnts[i].y;
|
||||
} bottom++; right++;
|
||||
|
||||
/* Polygon scanline algorithm released under public-domain by Darel Rex Finley, 2007 */
|
||||
/* Loop through the rows of the image. */
|
||||
for (pixelY = top; pixelY < bottom; pixelY ++) {
|
||||
nodes = 0; /* Build a list of nodes. */
|
||||
j = count - 1;
|
||||
for (i = 0; i < count; i++) {
|
||||
if (((pnts[i].y < pixelY) && (pnts[j].y >= pixelY)) ||
|
||||
((pnts[j].y < pixelY) && (pnts[i].y >= pixelY))) {
|
||||
nodeX[nodes++]= (int)((float)pnts[i].x
|
||||
+ ((float)pixelY - (float)pnts[i].y) / ((float)pnts[j].y - (float)pnts[i].y)
|
||||
* ((float)pnts[j].x - (float)pnts[i].x));
|
||||
} j = i;
|
||||
}
|
||||
|
||||
/* Sort the nodes, via a simple “Bubble” sort. */
|
||||
i = 0;
|
||||
while (i < nodes - 1) {
|
||||
if (nodeX[i] > nodeX[i+1]) {
|
||||
swap = nodeX[i];
|
||||
nodeX[i] = nodeX[i+1];
|
||||
nodeX[i+1] = swap;
|
||||
if (i) i--;
|
||||
} else i++;
|
||||
}
|
||||
/* Fill the pixels between node pairs. */
|
||||
for (i = 0; i < nodes; i += 2) {
|
||||
if (nodeX[i+0] >= right) break;
|
||||
if (nodeX[i+1] > left) {
|
||||
if (nodeX[i+0] < left) nodeX[i+0] = left ;
|
||||
if (nodeX[i+1] > right) nodeX[i+1] = right;
|
||||
for (pixelX = nodeX[i]; pixelX < nodeX[i + 1]; pixelX++)
|
||||
nk_wayland_ctx_setpixel(win, pixelX, pixelY, col);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void nk_wayland_fill_arc(const struct nk_wayland* win, short x0, short y0, short w, short h, const short s, const struct nk_color col)
|
||||
{
|
||||
/* Bresenham's ellipses - modified to fill one quarter */
|
||||
const int a2 = (w * w) / 4;
|
||||
const int b2 = (h * h) / 4;
|
||||
const int fa2 = 4 * a2, fb2 = 4 * b2;
|
||||
int x, y, sigma;
|
||||
struct nk_vec2i pnts[3];
|
||||
if (w < 1 || h < 1) return;
|
||||
if (s != 0 && s != 90 && s != 180 && s != 270)
|
||||
return;
|
||||
|
||||
/* Convert upper left to center */
|
||||
h = (h + 1) / 2;
|
||||
w = (w + 1) / 2;
|
||||
x0 += w;
|
||||
y0 += h;
|
||||
|
||||
pnts[0].x = x0;
|
||||
pnts[0].y = y0;
|
||||
pnts[2].x = x0;
|
||||
pnts[2].y = y0;
|
||||
|
||||
/* First half */
|
||||
for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) {
|
||||
if (s == 180) {
|
||||
pnts[1].x = x0 + x; pnts[1].y = y0 + y;
|
||||
} else if (s == 270) {
|
||||
pnts[1].x = x0 - x; pnts[1].y = y0 + y;
|
||||
} else if (s == 0) {
|
||||
pnts[1].x = x0 + x; pnts[1].y = y0 - y;
|
||||
} else if (s == 90) {
|
||||
pnts[1].x = x0 - x; pnts[1].y = y0 - y;
|
||||
}
|
||||
nk_wayland_fill_polygon(win, pnts, 3, col);
|
||||
pnts[2] = pnts[1];
|
||||
if (sigma >= 0) {
|
||||
sigma += fa2 * (1 - y);
|
||||
y--;
|
||||
} sigma += b2 * ((4 * x) + 6);
|
||||
}
|
||||
|
||||
/* Second half */
|
||||
for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) {
|
||||
if (s == 180) {
|
||||
pnts[1].x = x0 + x; pnts[1].y = y0 + y;
|
||||
} else if (s == 270) {
|
||||
pnts[1].x = x0 - x; pnts[1].y = y0 + y;
|
||||
} else if (s == 0) {
|
||||
pnts[1].x = x0 + x; pnts[1].y = y0 - y;
|
||||
} else if (s == 90) {
|
||||
pnts[1].x = x0 - x; pnts[1].y = y0 - y;
|
||||
}
|
||||
nk_wayland_fill_polygon(win, pnts, 3, col);
|
||||
pnts[2] = pnts[1];
|
||||
if (sigma >= 0) {
|
||||
sigma += fb2 * (1 - x);
|
||||
x--;
|
||||
} sigma += a2 * ((4 * y) + 6);
|
||||
}
|
||||
}
|
||||
|
||||
static void nk_wayland_img_setpixel(const struct wayland_img *img, const int x0, const int y0, const struct nk_color col)
|
||||
{
|
||||
unsigned int c = nk_wayland_color2int(col, img->pl);
|
||||
unsigned char *ptr;
|
||||
unsigned int *pixel;
|
||||
NK_ASSERT(img);
|
||||
if (y0 < img->h && y0 >= 0 && x0 >= 0 && x0 < img->w) {
|
||||
ptr = img->pixels + (img->pitch * y0);
|
||||
pixel = (unsigned int *)ptr;
|
||||
|
||||
if (img->format == NK_FONT_ATLAS_ALPHA8) {
|
||||
ptr[x0] = col.a;
|
||||
} else {
|
||||
pixel[x0] = c;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static struct nk_color nk_wayland_getpixel(const struct nk_wayland* win, const int x0, const int y0)
|
||||
{
|
||||
struct nk_color col = {0, 0, 0, 0};
|
||||
uint32_t *ptr;
|
||||
unsigned int pixel;
|
||||
|
||||
if (y0 < win->height && y0 >= 0 && x0 >= 0 && x0 < win->width) {
|
||||
ptr = win->data + (y0 * win->width);
|
||||
|
||||
col = nk_wayland_int2color(*ptr, PIXEL_LAYOUT_XRGB_8888);
|
||||
}
|
||||
|
||||
return col;
|
||||
}
|
||||
|
||||
static struct nk_color nk_wayland_img_getpixel(const struct wayland_img *img, const int x0, const int y0)
|
||||
{
|
||||
struct nk_color col = {0, 0, 0, 0};
|
||||
unsigned char *ptr;
|
||||
unsigned int pixel;
|
||||
NK_ASSERT(img);
|
||||
if (y0 < img->h && y0 >= 0 && x0 >= 0 && x0 < img->w) {
|
||||
ptr = img->pixels + (img->pitch * y0);
|
||||
|
||||
if (img->format == NK_FONT_ATLAS_ALPHA8) {
|
||||
col.a = ptr[x0];
|
||||
col.b = col.g = col.r = 0xff;
|
||||
} else {
|
||||
pixel = ((unsigned int *)ptr)[x0];
|
||||
col = nk_wayland_int2color(pixel, img->pl);
|
||||
}
|
||||
} return col;
|
||||
}
|
||||
|
||||
static void nk_wayland_blendpixel(const struct nk_wayland* win, const int x0, const int y0, struct nk_color col)
|
||||
{
|
||||
struct nk_color col2;
|
||||
unsigned char inv_a;
|
||||
if (col.a == 0)
|
||||
return;
|
||||
|
||||
inv_a = 0xff - col.a;
|
||||
col2 = nk_wayland_getpixel(win, x0, y0);
|
||||
col.r = (col.r * col.a + col2.r * inv_a) >> 8;
|
||||
col.g = (col.g * col.a + col2.g * inv_a) >> 8;
|
||||
col.b = (col.b * col.a + col2.b * inv_a) >> 8;
|
||||
nk_wayland_ctx_setpixel(win, x0, y0, col);
|
||||
}
|
||||
|
||||
static void nk_wayland_img_blendpixel(const struct wayland_img *img, const int x0, const int y0, struct nk_color col)
|
||||
{
|
||||
struct nk_color col2;
|
||||
unsigned char inv_a;
|
||||
if (col.a == 0)
|
||||
return;
|
||||
|
||||
inv_a = 0xff - col.a;
|
||||
col2 = nk_wayland_img_getpixel(img, x0, y0);
|
||||
col.r = (col.r * col.a + col2.r * inv_a) >> 8;
|
||||
col.g = (col.g * col.a + col2.g * inv_a) >> 8;
|
||||
col.b = (col.b * col.a + col2.b * inv_a) >> 8;
|
||||
nk_wayland_img_setpixel(img, x0, y0, col);
|
||||
}
|
||||
|
||||
static void nk_wayland_line_horizontal(const struct nk_wayland* win, const short x0, const short y, const short x1, const struct nk_color col)
|
||||
{
|
||||
/* This function is called the most. Try to optimize it a bit...
|
||||
* It does not check for scissors or image borders.
|
||||
* The caller has to make sure it does no exceed bounds. */
|
||||
unsigned int i, n;
|
||||
unsigned int c[16];
|
||||
unsigned char *pixels = (uint8_t*)win->data;
|
||||
unsigned int *ptr;
|
||||
|
||||
pixels += (y * (win->width * 4));
|
||||
ptr = (unsigned int *)pixels + x0;
|
||||
|
||||
n = x1 - x0;
|
||||
for (i = 0; i < sizeof(c) / sizeof(c[0]); i++)
|
||||
c[i] = nk_color_to_xrgb8888(col);
|
||||
|
||||
while (n > 16) {
|
||||
memcpy((void *)ptr, c, sizeof(c));
|
||||
n -= 16; ptr += 16;
|
||||
} for (i = 0; i < n; i++)
|
||||
ptr[i] = c[i];
|
||||
}
|
||||
|
||||
|
||||
static void nk_wayland_scissor(struct nk_wayland* win, const float x, const float y, const float w, const float h)
|
||||
{
|
||||
win->scissors.x = MIN(MAX(x, 0), WIDTH);
|
||||
win->scissors.y = MIN(MAX(y, 0), HEIGHT);
|
||||
win->scissors.w = MIN(MAX(w + x, 0), WIDTH);
|
||||
win->scissors.h = MIN(MAX(h + y, 0), HEIGHT);
|
||||
}
|
||||
|
||||
static void nk_wayland_stroke_line(const struct nk_wayland* win, short x0, short y0, short x1, short y1, const unsigned int line_thickness, const struct nk_color col)
|
||||
{
|
||||
short tmp;
|
||||
int dy, dx, stepx, stepy;
|
||||
|
||||
dy = y1 - y0;
|
||||
dx = x1 - x0;
|
||||
|
||||
//printf("\n\n\n\n");
|
||||
// fast path
|
||||
if (dy == 0) {
|
||||
if (dx == 0 || y0 >= win->scissors.h || y0 < win->scissors.y){
|
||||
return;
|
||||
}
|
||||
|
||||
if (dx < 0) {
|
||||
// swap x0 and x1
|
||||
tmp = x1;
|
||||
x1 = x0;
|
||||
x0 = tmp;
|
||||
}
|
||||
x1 = MIN(win->scissors.w, x1);
|
||||
x0 = MIN(win->scissors.w, x0);
|
||||
x1 = MAX(win->scissors.x, x1);
|
||||
x0 = MAX(win->scissors.x, x0);
|
||||
nk_wayland_line_horizontal(win, x0, y0, x1, col);
|
||||
return;
|
||||
}
|
||||
if (dy < 0) {
|
||||
dy = -dy;
|
||||
stepy = -1;
|
||||
} else stepy = 1;
|
||||
|
||||
if (dx < 0) {
|
||||
dx = -dx;
|
||||
stepx = -1;
|
||||
} else stepx = 1;
|
||||
|
||||
dy <<= 1;
|
||||
dx <<= 1;
|
||||
|
||||
nk_wayland_ctx_setpixel(win, x0, y0, col);
|
||||
if (dx > dy) {
|
||||
int fraction = dy - (dx >> 1);
|
||||
while (x0 != x1) {
|
||||
if (fraction >= 0) {
|
||||
y0 += stepy;
|
||||
fraction -= dx;
|
||||
}
|
||||
x0 += stepx;
|
||||
fraction += dy;
|
||||
nk_wayland_ctx_setpixel(win, x0, y0, col);
|
||||
}
|
||||
} else {
|
||||
int fraction = dx - (dy >> 1);
|
||||
while (y0 != y1) {
|
||||
if (fraction >= 0) {
|
||||
x0 += stepx;
|
||||
fraction -= dy;
|
||||
}
|
||||
y0 += stepy;
|
||||
fraction += dx;
|
||||
nk_wayland_ctx_setpixel(win, x0, y0, col);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
nk_wayland_fill_rect(const struct nk_wayland* win,
|
||||
const short x, const short y, const short w, const short h,
|
||||
const short r, const struct nk_color col)
|
||||
{
|
||||
int i;
|
||||
if (r == 0) {
|
||||
for (i = 0; i < h; i++)
|
||||
nk_wayland_stroke_line(win, x, y + i, x + w, y + i, 1, col);
|
||||
} else {
|
||||
const short xc = x + r;
|
||||
const short yc = y + r;
|
||||
const short wc = (short)(w - 2 * r);
|
||||
const short hc = (short)(h - 2 * r);
|
||||
|
||||
struct nk_vec2i pnts[12];
|
||||
pnts[0].x = x;
|
||||
pnts[0].y = yc;
|
||||
pnts[1].x = xc;
|
||||
pnts[1].y = yc;
|
||||
pnts[2].x = xc;
|
||||
pnts[2].y = y;
|
||||
|
||||
pnts[3].x = xc + wc;
|
||||
pnts[3].y = y;
|
||||
pnts[4].x = xc + wc;
|
||||
pnts[4].y = yc;
|
||||
pnts[5].x = x + w;
|
||||
pnts[5].y = yc;
|
||||
|
||||
pnts[6].x = x + w;
|
||||
pnts[6].y = yc + hc;
|
||||
pnts[7].x = xc + wc;
|
||||
pnts[7].y = yc + hc;
|
||||
pnts[8].x = xc + wc;
|
||||
pnts[8].y = y + h;
|
||||
|
||||
pnts[9].x = xc;
|
||||
pnts[9].y = y + h;
|
||||
pnts[10].x = xc;
|
||||
pnts[10].y = yc + hc;
|
||||
pnts[11].x = x;
|
||||
pnts[11].y = yc + hc;
|
||||
|
||||
nk_wayland_fill_polygon(win, pnts, 12, col);
|
||||
|
||||
nk_wayland_fill_arc(win, xc + wc - r, y,
|
||||
(unsigned)r*2, (unsigned)r*2, 0 , col);
|
||||
nk_wayland_fill_arc(win, x, y,
|
||||
(unsigned)r*2, (unsigned)r*2, 90 , col);
|
||||
nk_wayland_fill_arc(win, x, yc + hc - r,
|
||||
(unsigned)r*2, (unsigned)r*2, 270 , col);
|
||||
nk_wayland_fill_arc(win, xc + wc - r, yc + hc - r,
|
||||
(unsigned)r*2, (unsigned)r*2, 180 , col);
|
||||
}
|
||||
}
|
||||
|
||||
static void nk_wayland_stroke_arc(const struct nk_wayland* win,
|
||||
short x0, short y0, short w, short h, const short s,
|
||||
const short line_thickness, const struct nk_color col)
|
||||
{
|
||||
/* Bresenham's ellipses - modified to draw one quarter */
|
||||
const int a2 = (w * w) / 4;
|
||||
const int b2 = (h * h) / 4;
|
||||
const int fa2 = 4 * a2, fb2 = 4 * b2;
|
||||
int x, y, sigma;
|
||||
|
||||
if (s != 0 && s != 90 && s != 180 && s != 270) return;
|
||||
if (w < 1 || h < 1) return;
|
||||
|
||||
/* Convert upper left to center */
|
||||
h = (h + 1) / 2;
|
||||
w = (w + 1) / 2;
|
||||
x0 += w; y0 += h;
|
||||
|
||||
/* First half */
|
||||
for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) {
|
||||
if (s == 180)
|
||||
nk_wayland_ctx_setpixel(win, x0 + x, y0 + y, col);
|
||||
else if (s == 270)
|
||||
nk_wayland_ctx_setpixel(win, x0 - x, y0 + y, col);
|
||||
else if (s == 0)
|
||||
nk_wayland_ctx_setpixel(win, x0 + x, y0 - y, col);
|
||||
else if (s == 90)
|
||||
nk_wayland_ctx_setpixel(win, x0 - x, y0 - y, col);
|
||||
if (sigma >= 0) {
|
||||
sigma += fa2 * (1 - y);
|
||||
y--;
|
||||
} sigma += b2 * ((4 * x) + 6);
|
||||
}
|
||||
|
||||
/* Second half */
|
||||
for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) {
|
||||
if (s == 180)
|
||||
nk_wayland_ctx_setpixel(win, x0 + x, y0 + y, col);
|
||||
else if (s == 270)
|
||||
nk_wayland_ctx_setpixel(win, x0 - x, y0 + y, col);
|
||||
else if (s == 0)
|
||||
nk_wayland_ctx_setpixel(win, x0 + x, y0 - y, col);
|
||||
else if (s == 90)
|
||||
nk_wayland_ctx_setpixel(win, x0 - x, y0 - y, col);
|
||||
if (sigma >= 0) {
|
||||
sigma += fb2 * (1 - x);
|
||||
x--;
|
||||
} sigma += a2 * ((4 * y) + 6);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
static void nk_wayland_stroke_rect(const struct nk_wayland* win,
|
||||
const short x, const short y, const short w, const short h,
|
||||
const short r, const short line_thickness, const struct nk_color col)
|
||||
{
|
||||
if (r == 0) {
|
||||
nk_wayland_stroke_line(win, x, y, x + w, y, line_thickness, col);
|
||||
nk_wayland_stroke_line(win, x, y + h, x + w, y + h, line_thickness, col);
|
||||
nk_wayland_stroke_line(win, x, y, x, y + h, line_thickness, col);
|
||||
nk_wayland_stroke_line(win, x + w, y, x + w, y + h, line_thickness, col);
|
||||
} else {
|
||||
const short xc = x + r;
|
||||
const short yc = y + r;
|
||||
const short wc = (short)(w - 2 * r);
|
||||
const short hc = (short)(h - 2 * r);
|
||||
|
||||
nk_wayland_stroke_line(win, xc, y, xc + wc, y, line_thickness, col);
|
||||
nk_wayland_stroke_line(win, x + w, yc, x + w, yc + hc, line_thickness, col);
|
||||
nk_wayland_stroke_line(win, xc, y + h, xc + wc, y + h, line_thickness, col);
|
||||
nk_wayland_stroke_line(win, x, yc, x, yc + hc, line_thickness, col);
|
||||
|
||||
nk_wayland_stroke_arc(win, xc + wc - r, y,
|
||||
(unsigned)r*2, (unsigned)r*2, 0 , line_thickness, col);
|
||||
nk_wayland_stroke_arc(win, x, y,
|
||||
(unsigned)r*2, (unsigned)r*2, 90 , line_thickness, col);
|
||||
nk_wayland_stroke_arc(win, x, yc + hc - r,
|
||||
(unsigned)r*2, (unsigned)r*2, 270 , line_thickness, col);
|
||||
nk_wayland_stroke_arc(win, xc + wc - r, yc + hc - r,
|
||||
(unsigned)r*2, (unsigned)r*2, 180 , line_thickness, col);
|
||||
}
|
||||
}
|
||||
|
||||
static void nk_wayland_fill_triangle(const struct nk_wayland *win,
|
||||
const short x0, const short y0, const short x1, const short y1,
|
||||
const short x2, const short y2, const struct nk_color col)
|
||||
{
|
||||
struct nk_vec2i pnts[3];
|
||||
pnts[0].x = x0;
|
||||
pnts[0].y = y0;
|
||||
pnts[1].x = x1;
|
||||
pnts[1].y = y1;
|
||||
pnts[2].x = x2;
|
||||
pnts[2].y = y2;
|
||||
nk_wayland_fill_polygon(win, pnts, 3, col);
|
||||
}
|
||||
|
||||
static void nk_wayland_clear(const struct nk_wayland *win, const struct nk_color col)
|
||||
{
|
||||
nk_wayland_fill_rect(win, 0, 0, win->width, win->height, 0, col);
|
||||
}
|
||||
|
||||
static void nk_wayland_fill_circle(struct nk_wayland* win, short x0, short y0, short w, short h, const struct nk_color col)
|
||||
{
|
||||
/* Bresenham's ellipses */
|
||||
const int a2 = (w * w) / 4;
|
||||
const int b2 = (h * h) / 4;
|
||||
const int fa2 = 4 * a2, fb2 = 4 * b2;
|
||||
int x, y, sigma;
|
||||
|
||||
/* Convert upper left to center */
|
||||
h = (h + 1) / 2;
|
||||
w = (w + 1) / 2;
|
||||
x0 += w;
|
||||
y0 += h;
|
||||
|
||||
/* First half */
|
||||
for (x = 0, y = h, sigma = 2*b2+a2*(1-2*h); b2*x <= a2*y; x++) {
|
||||
nk_wayland_stroke_line(win, x0 - x, y0 + y, x0 + x, y0 + y, 1, col);
|
||||
nk_wayland_stroke_line(win, x0 - x, y0 - y, x0 + x, y0 - y, 1, col);
|
||||
if (sigma >= 0) {
|
||||
sigma += fa2 * (1 - y);
|
||||
y--;
|
||||
} sigma += b2 * ((4 * x) + 6);
|
||||
}
|
||||
/* Second half */
|
||||
for (x = w, y = 0, sigma = 2*a2+b2*(1-2*w); a2*y <= b2*x; y++) {
|
||||
nk_wayland_stroke_line(win, x0 - x, y0 + y, x0 + x, y0 + y, 1, col);
|
||||
nk_wayland_stroke_line(win, x0 - x, y0 - y, x0 + x, y0 - y, 1, col);
|
||||
if (sigma >= 0) {
|
||||
sigma += fb2 * (1 - x);
|
||||
x--;
|
||||
} sigma += a2 * ((4 * y) + 6);
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Copy wayland_img into nk_wayland with scissor & stretch
|
||||
*/
|
||||
static void nk_wayland_copy_image(const struct nk_wayland *win, const struct wayland_img *src,
|
||||
const struct nk_rect *dst_rect,
|
||||
const struct nk_rect *src_rect,
|
||||
const struct nk_rect *dst_scissors,
|
||||
const struct nk_color *fg)
|
||||
{
|
||||
short i, j;
|
||||
struct nk_color col;
|
||||
float xinc = src_rect->w / dst_rect->w;
|
||||
float yinc = src_rect->h / dst_rect->h;
|
||||
float xoff = src_rect->x, yoff = src_rect->y;
|
||||
|
||||
// Simple nearest filtering rescaling
|
||||
// TODO: use bilinear filter
|
||||
for (j = 0; j < (short)dst_rect->h; j++) {
|
||||
for (i = 0; i < (short)dst_rect->w; i++) {
|
||||
if (dst_scissors) {
|
||||
if (i + (int)(dst_rect->x + 0.5f) < dst_scissors->x || i + (int)(dst_rect->x + 0.5f) >= dst_scissors->w)
|
||||
continue;
|
||||
if (j + (int)(dst_rect->y + 0.5f) < dst_scissors->y || j + (int)(dst_rect->y + 0.5f) >= dst_scissors->h)
|
||||
continue;
|
||||
}
|
||||
col = nk_wayland_img_getpixel(src, (int)xoff, (int) yoff);
|
||||
if (col.r || col.g || col.b)
|
||||
{
|
||||
col.r = fg->r;
|
||||
col.g = fg->g;
|
||||
col.b = fg->b;
|
||||
}
|
||||
nk_wayland_blendpixel(win, i + (int)(dst_rect->x + 0.5f), j + (int)(dst_rect->y + 0.5f), col);
|
||||
xoff += xinc;
|
||||
}
|
||||
xoff = src_rect->x;
|
||||
yoff += yinc;
|
||||
}
|
||||
}
|
||||
|
||||
static void nk_wayland_font_query_font_glyph(nk_handle handle, const float height, struct nk_user_font_glyph *glyph, const nk_rune codepoint, const nk_rune next_codepoint)
|
||||
{
|
||||
float scale;
|
||||
const struct nk_font_glyph *g;
|
||||
struct nk_font *font;
|
||||
NK_ASSERT(glyph);
|
||||
NK_UNUSED(next_codepoint);
|
||||
|
||||
font = (struct nk_font*)handle.ptr;
|
||||
NK_ASSERT(font);
|
||||
NK_ASSERT(font->glyphs);
|
||||
if (!font || !glyph)
|
||||
return;
|
||||
|
||||
scale = height/font->info.height;
|
||||
g = nk_font_find_glyph(font, codepoint);
|
||||
glyph->width = (g->x1 - g->x0) * scale;
|
||||
glyph->height = (g->y1 - g->y0) * scale;
|
||||
glyph->offset = nk_vec2(g->x0 * scale, g->y0 * scale);
|
||||
glyph->xadvance = (g->xadvance * scale);
|
||||
glyph->uv[0] = nk_vec2(g->u0, g->v0);
|
||||
glyph->uv[1] = nk_vec2(g->u1, g->v1);
|
||||
}
|
||||
|
||||
void nk_wayland_draw_text(const struct nk_wayland *win, const struct nk_user_font *font, const struct nk_rect rect, const char *text, const int len, const float font_height, const struct nk_color fg)
|
||||
{
|
||||
float x = 0;
|
||||
int text_len = 0;
|
||||
nk_rune unicode = 0;
|
||||
nk_rune next = 0;
|
||||
int glyph_len = 0;
|
||||
int next_glyph_len = 0;
|
||||
struct nk_user_font_glyph g;
|
||||
if (!len || !text) return;
|
||||
|
||||
x = 0;
|
||||
glyph_len = nk_utf_decode(text, &unicode, len);
|
||||
if (!glyph_len) return;
|
||||
|
||||
// draw every glyph image
|
||||
while (text_len < len && glyph_len) {
|
||||
struct nk_rect src_rect;
|
||||
struct nk_rect dst_rect;
|
||||
float char_width = 0;
|
||||
if (unicode == NK_UTF_INVALID) break;
|
||||
|
||||
// query currently drawn glyph information
|
||||
next_glyph_len = nk_utf_decode(text + text_len + glyph_len, &next, (int)len - text_len);
|
||||
nk_wayland_font_query_font_glyph(font->userdata, font_height, &g, unicode,
|
||||
(next == NK_UTF_INVALID) ? '\0' : next);
|
||||
|
||||
//calculate and draw glyph drawing rectangle and image
|
||||
char_width = g.xadvance;
|
||||
src_rect.x = g.uv[0].x * win->font_tex.w;
|
||||
src_rect.y = g.uv[0].y * win->font_tex.h;
|
||||
src_rect.w = g.uv[1].x * win->font_tex.w - g.uv[0].x * win->font_tex.w;
|
||||
src_rect.h = g.uv[1].y * win->font_tex.h - g.uv[0].y * win->font_tex.h;
|
||||
|
||||
dst_rect.x = x + g.offset.x + rect.x;
|
||||
dst_rect.y = g.offset.y + rect.y;
|
||||
dst_rect.w = ceilf(g.width);
|
||||
dst_rect.h = ceilf(g.height);
|
||||
|
||||
// Use software rescaling to blit glyph from font_text to framebuffer
|
||||
nk_wayland_copy_image(win, &(win->font_tex), &dst_rect, &src_rect, &(win->scissors), &fg);
|
||||
|
||||
// offset next glyph
|
||||
text_len += glyph_len;
|
||||
x += char_width;
|
||||
glyph_len = next_glyph_len;
|
||||
unicode = next;
|
||||
}
|
||||
}
|
||||
|
||||
static void nk_wayland_render(struct nk_wayland *win, const struct nk_color clear, const unsigned char enable_clear)
|
||||
{
|
||||
const struct nk_command *cmd;
|
||||
const struct nk_command_text *tx;
|
||||
const struct nk_command_scissor *s;
|
||||
const struct nk_command_rect_filled *rf;
|
||||
const struct nk_command_rect *r;
|
||||
const struct nk_command_circle_filled *c;
|
||||
const struct nk_command_triangle_filled *t;
|
||||
const struct nk_command_line *l;
|
||||
const struct nk_command_polygon_filled *p;
|
||||
|
||||
if (enable_clear)
|
||||
nk_wayland_clear(win, clear);
|
||||
|
||||
nk_foreach(cmd, (struct nk_context*)&(win->ctx)) {
|
||||
switch (cmd->type) {
|
||||
case NK_COMMAND_NOP:
|
||||
//printf("NK_COMMAND_NOP \n");
|
||||
break;
|
||||
|
||||
case NK_COMMAND_SCISSOR:
|
||||
s = (const struct nk_command_scissor*)cmd;
|
||||
nk_wayland_scissor(win, s->x, s->y, s->w, s->h);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_LINE:
|
||||
l = (const struct nk_command_line *)cmd;
|
||||
nk_wayland_stroke_line(win, l->begin.x, l->begin.y, l->end.x, l->end.y, l->line_thickness, l->color);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_RECT:
|
||||
r = (const struct nk_command_rect *)cmd;
|
||||
nk_wayland_stroke_rect(win, r->x, r->y, r->w, r->h, (unsigned short)r->rounding, r->line_thickness, r->color);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_RECT_FILLED:
|
||||
rf = (const struct nk_command_rect_filled *)cmd;
|
||||
nk_wayland_fill_rect(win, rf->x, rf->y, rf->w, rf->h, (unsigned short)rf->rounding, rf->color);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_CIRCLE:
|
||||
// printf("NK_COMMAND_CIRCLE \n");
|
||||
//const struct nk_command_circle *c = (const struct nk_command_circle *)cmd;
|
||||
//nk_rawfb_stroke_circle(rawfb, c->x, c->y, c->w, c->h, c->line_thickness, c->color);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_CIRCLE_FILLED:
|
||||
c = (const struct nk_command_circle_filled *)cmd;
|
||||
nk_wayland_fill_circle(win, c->x, c->y, c->w, c->h, c->color);
|
||||
|
||||
//const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd;
|
||||
//nk_rawfb_fill_circle(rawfb, c->x, c->y, c->w, c->h, c->color);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_TRIANGLE:
|
||||
//printf("NK_COMMAND_TRIANGLE \n");
|
||||
//const struct nk_command_triangle*t = (const struct nk_command_triangle*)cmd;
|
||||
//nk_rawfb_stroke_triangle(rawfb, t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->line_thickness, t->color);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_TRIANGLE_FILLED:
|
||||
t = (const struct nk_command_triangle_filled *)cmd;
|
||||
nk_wayland_fill_triangle(win, t->a.x, t->a.y, t->b.x, t->b.y, t->c.x, t->c.y, t->color);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_POLYGON:
|
||||
// printf("NK_COMMAND_POLYGON \n");
|
||||
//const struct nk_command_polygon *p =(const struct nk_command_polygon*)cmd;
|
||||
//nk_rawfb_stroke_polygon(rawfb, p->points, p->point_count, p->line_thickness,p->color);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_POLYGON_FILLED:
|
||||
// printf("NK_COMMAND_POLYGON_FILLED \n");
|
||||
p = (const struct nk_command_polygon_filled *)cmd;
|
||||
nk_wayland_fill_polygon(win, p->points, p->point_count, p->color);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_POLYLINE:
|
||||
// printf("NK_COMMAND_POLYLINE \n");
|
||||
//const struct nk_command_polyline *p = (const struct nk_command_polyline *)cmd;
|
||||
//nk_rawfb_stroke_polyline(rawfb, p->points, p->point_count, p->line_thickness, p->color);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_TEXT:
|
||||
tx = (const struct nk_command_text*)cmd;
|
||||
nk_wayland_draw_text(win, tx->font, nk_rect(tx->x, tx->y, tx->w, tx->h), tx->string, tx->length, tx->height, tx->foreground);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_CURVE:
|
||||
// printf("NK_COMMAND_CURVE \n");
|
||||
//const struct nk_command_curve *q = (const struct nk_command_curve *)cmd;
|
||||
//nk_rawfb_stroke_curve(rawfb, q->begin, q->ctrl[0], q->ctrl[1], q->end, 22, q->line_thickness, q->color);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_RECT_MULTI_COLOR:
|
||||
// printf("NK_COMMAND_RECT_MULTI_COLOR \n");
|
||||
//const struct nk_command_rect_multi_color *q = (const struct nk_command_rect_multi_color *)cmd;
|
||||
//nk_rawfb_draw_rect_multi_color(rawfb, q->x, q->y, q->w, q->h, q->left, q->top, q->right, q->bottom);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_IMAGE:
|
||||
//printf("NK_COMMAND_IMAGE \n");
|
||||
// const struct nk_command_image *q = (const struct nk_command_image *)cmd;
|
||||
// nk_rawfb_drawimage(rawfb, q->x, q->y, q->w, q->h, &q->img, &q->col);
|
||||
break;
|
||||
|
||||
case NK_COMMAND_ARC:
|
||||
printf("NK_COMMAND_ARC \n");
|
||||
assert(0 && "NK_COMMAND_ARC not implemented\n");
|
||||
break;
|
||||
|
||||
case NK_COMMAND_ARC_FILLED:
|
||||
printf("NK_COMMAND_ARC \n");
|
||||
assert(0 && "NK_COMMAND_ARC_FILLED not implemented\n");
|
||||
break;
|
||||
|
||||
default:
|
||||
printf("unhandled OP: %d \n", cmd->type);
|
||||
break;
|
||||
}
|
||||
} nk_clear(&(win->ctx));
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user