264 lines
7.7 KiB
C
264 lines
7.7 KiB
C
/*
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* MIT License
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*
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* Copyright (c) 2016-2017 Patrick Rudolph <siro@das-labor.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Based on x11/main.c.
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*
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <limits.h>
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#include <math.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <time.h>
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#define RAWFB_RGBX_8888
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#define NK_INCLUDE_FIXED_TYPES
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#define NK_INCLUDE_STANDARD_IO
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#define NK_INCLUDE_STANDARD_VARARGS
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#define NK_INCLUDE_DEFAULT_ALLOCATOR
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#define NK_IMPLEMENTATION
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#define NK_XLIBSHM_IMPLEMENTATION
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#define NK_RAWFB_IMPLEMENTATION
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#define NK_INCLUDE_FONT_BAKING
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#define NK_INCLUDE_DEFAULT_FONT
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#define NK_INCLUDE_SOFTWARE_FONT
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#include "../../nuklear.h"
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#include "nuklear_rawfb.h"
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#include "nuklear_xlib.h"
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#define DTIME 20
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#define WINDOW_WIDTH 800
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#define WINDOW_HEIGHT 600
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#define UNUSED(a) (void)a
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#define MAX(a,b) ((a) < (b) ? (b) : (a))
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#define LEN(a) (sizeof(a)/sizeof(a)[0])
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typedef struct XWindow XWindow;
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struct XWindow {
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Display *dpy;
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Window root;
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Visual *vis;
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Colormap cmap;
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XWindowAttributes attr;
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XSetWindowAttributes swa;
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Window win;
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int screen;
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unsigned int width;
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unsigned int height;
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};
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static void
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die(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fputs("\n", stderr);
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exit(EXIT_FAILURE);
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}
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static long
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timestamp(void)
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{
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struct timeval tv;
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if (gettimeofday(&tv, NULL) < 0) return 0;
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return (long)((long)tv.tv_sec * 1000 + (long)tv.tv_usec/1000);
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}
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static void
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sleep_for(long t)
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{
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struct timespec req;
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const time_t sec = (int)(t/1000);
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const long ms = t - (sec * 1000);
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req.tv_sec = sec;
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req.tv_nsec = ms * 1000000L;
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while(-1 == nanosleep(&req, &req));
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}
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/* ===============================================================
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*
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* EXAMPLE
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*
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* ===============================================================*/
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/* This are some code examples to provide a small overview of what can be
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* done with this library. To try out an example uncomment the defines */
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/*#define INCLUDE_ALL */
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/*#define INCLUDE_STYLE */
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/*#define INCLUDE_CALCULATOR */
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/*#define INCLUDE_OVERVIEW */
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/*#define INCLUDE_NODE_EDITOR */
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#ifdef INCLUDE_ALL
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#define INCLUDE_STYLE
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#define INCLUDE_CALCULATOR
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#define INCLUDE_OVERVIEW
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#define INCLUDE_NODE_EDITOR
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#endif
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#ifdef INCLUDE_STYLE
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#include "../style.c"
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#endif
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#ifdef INCLUDE_CALCULATOR
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#include "../calculator.c"
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#endif
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#ifdef INCLUDE_OVERVIEW
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#include "../overview.c"
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#endif
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#ifdef INCLUDE_NODE_EDITOR
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#include "../node_editor.c"
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#endif
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/* ===============================================================
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*
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* DEMO
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*
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* ===============================================================*/
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int
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main(void)
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{
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long dt;
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long started;
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int running = 1;
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int status;
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XWindow xw;
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struct rawfb_context *rawfb;
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void *fb = NULL;
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unsigned char tex_scratch[512 * 512];
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/* X11 */
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memset(&xw, 0, sizeof xw);
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xw.dpy = XOpenDisplay(NULL);
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if (!xw.dpy) die("Could not open a display; perhaps $DISPLAY is not set?");
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xw.root = DefaultRootWindow(xw.dpy);
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xw.screen = XDefaultScreen(xw.dpy);
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xw.vis = XDefaultVisual(xw.dpy, xw.screen);
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xw.cmap = XCreateColormap(xw.dpy,xw.root,xw.vis,AllocNone);
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xw.swa.colormap = xw.cmap;
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xw.swa.event_mask =
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ExposureMask | KeyPressMask | KeyReleaseMask |
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ButtonPress | ButtonReleaseMask| ButtonMotionMask |
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Button1MotionMask | Button3MotionMask | Button4MotionMask | Button5MotionMask|
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PointerMotionMask | KeymapStateMask | EnterWindowMask | LeaveWindowMask;
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xw.win = XCreateWindow(xw.dpy, xw.root, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, 0,
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XDefaultDepth(xw.dpy, xw.screen), InputOutput,
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xw.vis, CWEventMask | CWColormap, &xw.swa);
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XStoreName(xw.dpy, xw.win, "X11");
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XMapWindow(xw.dpy, xw.win);
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XGetWindowAttributes(xw.dpy, xw.win, &xw.attr);
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xw.width = (unsigned int)xw.attr.width;
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xw.height = (unsigned int)xw.attr.height;
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/* Framebuffer emulator */
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status = nk_xlib_init(xw.dpy, xw.vis, xw.screen, xw.win, xw.width, xw.height, &fb);
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if (!status || !fb)
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return 0;
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/* GUI */
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rawfb = nk_rawfb_init(fb, tex_scratch, xw.width, xw.height, xw.width * 4);
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if (!rawfb) running = 0;
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#ifdef INCLUDE_STYLE
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/*set_style(ctx, THEME_WHITE);*/
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/*set_style(ctx, THEME_RED);*/
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/*set_style(ctx, THEME_BLUE);*/
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/*set_style(ctx, THEME_DARK);*/
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#endif
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while (running) {
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/* Input */
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XEvent evt;
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started = timestamp();
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nk_input_begin(&rawfb->ctx);
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while (XCheckWindowEvent(xw.dpy, xw.win, xw.swa.event_mask, &evt)) {
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if (XFilterEvent(&evt, xw.win)) continue;
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nk_xlib_handle_event(xw.dpy, xw.screen, xw.win, &evt, rawfb);
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}
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nk_input_end(&rawfb->ctx);
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/* GUI */
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if (nk_begin(&rawfb->ctx, "Demo", nk_rect(50, 50, 200, 200),
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NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|
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NK_WINDOW_CLOSABLE|NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE)) {
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enum {EASY, HARD};
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static int op = EASY;
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static int property = 20;
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nk_layout_row_static(&rawfb->ctx, 30, 80, 1);
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if (nk_button_label(&rawfb->ctx, "button"))
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fprintf(stdout, "button pressed\n");
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nk_layout_row_dynamic(&rawfb->ctx, 30, 2);
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if (nk_option_label(&rawfb->ctx, "easy", op == EASY)) op = EASY;
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if (nk_option_label(&rawfb->ctx, "hard", op == HARD)) op = HARD;
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nk_layout_row_dynamic(&rawfb->ctx, 25, 1);
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nk_property_int(&rawfb->ctx, "Compression:", 0, &property, 100, 10, 1);
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}
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nk_end(&rawfb->ctx);
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if (nk_window_is_closed(&rawfb->ctx, "Demo")) break;
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/* -------------- EXAMPLES ---------------- */
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#ifdef INCLUDE_CALCULATOR
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calculator(ctx);
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#endif
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#ifdef INCLUDE_OVERVIEW
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overview(ctx);
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#endif
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#ifdef INCLUDE_NODE_EDITOR
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node_editor(ctx);
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#endif
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/* ----------------------------------------- */
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/* Draw framebuffer */
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nk_rawfb_render(rawfb, nk_rgb(30,30,30), 1);
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/* Emulate framebuffer */
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XClearWindow(xw.dpy, xw.win);
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nk_xlib_render(xw.win);
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XFlush(xw.dpy);
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/* Timing */
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dt = timestamp() - started;
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if (dt < DTIME)
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sleep_for(DTIME - dt);
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}
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nk_rawfb_shutdown(rawfb);
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nk_xlib_shutdown();
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XUnmapWindow(xw.dpy, xw.win);
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XFreeColormap(xw.dpy, xw.cmap);
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XDestroyWindow(xw.dpy, xw.win);
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XCloseDisplay(xw.dpy);
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return 0;
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}
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