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+/*
+ * MIT License
+ *
+ * Copyright (c) 2016-2017 Patrick Rudolph <siro@das-labor.org>
+ *
+ * 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 <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <limits.h>
+#include <math.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <time.h>
+
+#define RAWFB_RGBX_8888
+#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;
+ 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);
+ if (!status || !fb)
+ return 0;
+
+ /* GUI */
+ rawfb = nk_rawfb_init(fb, tex_scratch, xw.width, xw.height, xw.width * 4);
+ if (!rawfb) running = 0;
+
+ #ifdef INCLUDE_STYLE
+ /*set_style(ctx, THEME_WHITE);*/
+ /*set_style(ctx, THEME_RED);*/
+ /*set_style(ctx, THEME_BLUE);*/
+ /*set_style(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(ctx);
+ #endif
+ #ifdef INCLUDE_OVERVIEW
+ overview(ctx);
+ #endif
+ #ifdef INCLUDE_NODE_EDITOR
+ node_editor(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;
+}
+