/* * MIT License * * Copyright (c) 2016-2017 Patrick Rudolph * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Based on x11/main.c. * */ #include #include #include #include #include #include #include #include #include #include #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_XLIBSHM_IMPLEMENTATION #define NK_RAWFB_IMPLEMENTATION #define NK_INCLUDE_FONT_BAKING #define NK_INCLUDE_DEFAULT_FONT #define NK_INCLUDE_SOFTWARE_FONT #include "../../nuklear.h" #include "nuklear_rawfb.h" #include "nuklear_xlib.h" #define DTIME 20 #define WINDOW_WIDTH 800 #define WINDOW_HEIGHT 600 #define UNUSED(a) (void)a #define MIN(a,b) ((a) < (b) ? (a) : (b)) #define MAX(a,b) ((a) < (b) ? (b) : (a)) #define LEN(a) (sizeof(a)/sizeof(a)[0]) typedef struct XWindow XWindow; struct XWindow { Display *dpy; Window root; Visual *vis; Colormap cmap; XWindowAttributes attr; XSetWindowAttributes swa; Window win; int screen; unsigned int width; unsigned int height; }; static void die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); fputs("\n", stderr); exit(EXIT_FAILURE); } 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)); } /* =============================================================== * * 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_OVERVIEW */ /*#define INCLUDE_NODE_EDITOR */ #ifdef INCLUDE_ALL #define INCLUDE_STYLE #define INCLUDE_CALCULATOR #define INCLUDE_OVERVIEW #define INCLUDE_NODE_EDITOR #endif #ifdef INCLUDE_STYLE #include "../style.c" #endif #ifdef INCLUDE_CALCULATOR #include "../calculator.c" #endif #ifdef INCLUDE_OVERVIEW #include "../overview.c" #endif #ifdef INCLUDE_NODE_EDITOR #include "../node_editor.c" #endif /* =============================================================== * * DEMO * * ===============================================================*/ int main(void) { long dt; long started; int running = 1; int status; XWindow xw; struct rawfb_context *rawfb; void *fb = NULL; rawfb_pl pl; unsigned char tex_scratch[512 * 512]; /* X11 */ memset(&xw, 0, sizeof xw); xw.dpy = XOpenDisplay(NULL); if (!xw.dpy) die("Could not open a display; perhaps $DISPLAY is not set?"); xw.root = DefaultRootWindow(xw.dpy); xw.screen = XDefaultScreen(xw.dpy); xw.vis = XDefaultVisual(xw.dpy, xw.screen); xw.cmap = XCreateColormap(xw.dpy,xw.root,xw.vis,AllocNone); xw.swa.colormap = xw.cmap; xw.swa.event_mask = ExposureMask | KeyPressMask | KeyReleaseMask | ButtonPress | ButtonReleaseMask| ButtonMotionMask | Button1MotionMask | Button3MotionMask | Button4MotionMask | Button5MotionMask| PointerMotionMask | KeymapStateMask | EnterWindowMask | LeaveWindowMask; xw.win = XCreateWindow(xw.dpy, xw.root, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, 0, XDefaultDepth(xw.dpy, xw.screen), InputOutput, xw.vis, CWEventMask | CWColormap, &xw.swa); XStoreName(xw.dpy, xw.win, "X11"); XMapWindow(xw.dpy, xw.win); XGetWindowAttributes(xw.dpy, xw.win, &xw.attr); xw.width = (unsigned int)xw.attr.width; xw.height = (unsigned int)xw.attr.height; /* Framebuffer emulator */ status = nk_xlib_init(xw.dpy, xw.vis, xw.screen, xw.win, xw.width, xw.height, &fb, &pl); if (!status || !fb) return 0; /* GUI */ rawfb = nk_rawfb_init(fb, tex_scratch, xw.width, xw.height, xw.width * 4, pl); if (!rawfb) running = 0; #ifdef INCLUDE_STYLE /*set_style(&rawfb->ctx, THEME_WHITE);*/ /*set_style(&rawfb->ctx, THEME_RED);*/ /*set_style(&rawfb->ctx, THEME_BLUE);*/ /*set_style(&rawfb->ctx, THEME_DARK);*/ #endif while (running) { /* Input */ XEvent evt; started = timestamp(); nk_input_begin(&rawfb->ctx); while (XCheckWindowEvent(xw.dpy, xw.win, xw.swa.event_mask, &evt)) { if (XFilterEvent(&evt, xw.win)) continue; nk_xlib_handle_event(xw.dpy, xw.screen, xw.win, &evt, rawfb); } nk_input_end(&rawfb->ctx); /* GUI */ if (nk_begin(&rawfb->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(&rawfb->ctx, 30, 80, 1); if (nk_button_label(&rawfb->ctx, "button")) fprintf(stdout, "button pressed\n"); nk_layout_row_dynamic(&rawfb->ctx, 30, 2); if (nk_option_label(&rawfb->ctx, "easy", op == EASY)) op = EASY; if (nk_option_label(&rawfb->ctx, "hard", op == HARD)) op = HARD; nk_layout_row_dynamic(&rawfb->ctx, 25, 1); nk_property_int(&rawfb->ctx, "Compression:", 0, &property, 100, 10, 1); } nk_end(&rawfb->ctx); if (nk_window_is_closed(&rawfb->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_rawfb_render(rawfb, nk_rgb(30,30,30), 1); /* Emulate framebuffer */ XClearWindow(xw.dpy, xw.win); nk_xlib_render(xw.win); XFlush(xw.dpy); /* Timing */ dt = timestamp() - started; if (dt < DTIME) sleep_for(DTIME - dt); } nk_rawfb_shutdown(rawfb); nk_xlib_shutdown(); XUnmapWindow(xw.dpy, xw.win); XFreeColormap(xw.dpy, xw.cmap); XDestroyWindow(xw.dpy, xw.win); XCloseDisplay(xw.dpy); return 0; }