mirror of https://github.com/vurtun/nuklear.git
795 lines
28 KiB
C
795 lines
28 KiB
C
/*
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Copyright (c) 2016 Micha Mettke
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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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 <time.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <math.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xresource.h>
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#include <X11/Xlocale.h>
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/* macros */
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#define DTIME 16
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#include "../../zahnrad.h"
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#define DEMO_DO_NOT_DRAW_IMAGES
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#define DEMO_DO_NOT_USE_COLOR_PICKER
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#include "../demo.c"
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typedef struct XFont XFont;
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typedef struct XSurface XSurface;
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typedef struct XWindow XWindow;
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struct XFont {
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int ascent;
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int descent;
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int height;
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XFontSet set;
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XFontStruct *xfont;
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};
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struct XSurface {
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GC gc;
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Display *dpy;
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int screen;
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Window root;
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Drawable drawable;
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unsigned int w, h;
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};
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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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XFont *font;
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XSurface *surf;
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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 void*
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xcalloc(size_t siz, size_t n)
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{
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void *ptr = calloc(siz, n);
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if (!ptr) die("Out of memory\n");
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return ptr;
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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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static XFont*
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font_create(Display *dpy, const char *name)
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{
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int n;
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char *def, **missing;
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XFont *font = (XFont*)xcalloc(1, sizeof(XFont));
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font->set = XCreateFontSet(dpy, name, &missing, &n, &def);
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if(missing) {
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while(n--)
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fprintf(stderr, "missing fontset: %s\n", missing[n]);
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XFreeStringList(missing);
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}
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if(font->set) {
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XFontStruct **xfonts;
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char **font_names;
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XExtentsOfFontSet(font->set);
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n = XFontsOfFontSet(font->set, &xfonts, &font_names);
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while(n--) {
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font->ascent = MAX(font->ascent, (*xfonts)->ascent);
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font->descent = MAX(font->descent,(*xfonts)->descent);
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xfonts++;
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}
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} else {
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if(!(font->xfont = XLoadQueryFont(dpy, name))
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&& !(font->xfont = XLoadQueryFont(dpy, "fixed")))
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die("error, cannot load font: '%s'\n", name);
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font->ascent = font->xfont->ascent;
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font->descent = font->xfont->descent;
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}
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font->height = font->ascent + font->descent;
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return font;
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}
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static zr_size
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font_get_text_width(zr_handle handle, float height, const char *text, zr_size len)
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{
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XFont *font = (XFont*)handle.ptr;
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XRectangle r;
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if(!font || !text)
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return 0;
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UNUSED(height);
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if(font->set) {
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XmbTextExtents(font->set, (const char*)text, (int)len, NULL, &r);
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return r.width;
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} else return (zr_size)XTextWidth(font->xfont, (const char*)text, (int)len);
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}
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static void
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font_del(Display *dpy, XFont *font)
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{
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if(!font) return;
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if(font->set)
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XFreeFontSet(dpy, font->set);
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else
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XFreeFont(dpy, font->xfont);
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free(font);
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}
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static unsigned long
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color_from_byte(const zr_byte *c)
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{
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unsigned long res = 0;
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res |= (unsigned long)c[0] << 16;
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res |= (unsigned long)c[1] << 8;
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res |= (unsigned long)c[2] << 0;
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return (res);
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}
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static void
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color_to_byte(unsigned char *c, unsigned long pixel)
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{
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c[0] = (pixel & ((unsigned long)0xFF << 16)) >> 16;
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c[1] = (pixel & ((unsigned long)0xFF << 8)) >> 8;
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c[2] = (pixel & ((unsigned long)0xFF << 0)) >> 0;
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c[3] = (pixel & ((unsigned long)0xFF << 24)) >> 24;
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}
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static XSurface*
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surface_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h)
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{
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XSurface *surface = (XSurface*)xcalloc(1, sizeof(XSurface));
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surface->w = w;
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surface->h = h;
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surface->dpy = dpy;
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surface->screen = screen;
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surface->root = root;
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surface->gc = XCreateGC(dpy, root, 0, NULL);
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XSetLineAttributes(dpy, surface->gc, 1, LineSolid, CapButt, JoinMiter);
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surface->drawable = XCreatePixmap(dpy, root, w, h, 32);
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return surface;
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}
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static void
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surface_resize(XSurface *surf, unsigned int w, unsigned int h)
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{
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if(!surf) return;
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if (surf->w == w && surf->h == h) return;
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surf->w = w; surf->h = h;
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if(surf->drawable) XFreePixmap(surf->dpy, surf->drawable);
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surf->drawable = XCreatePixmap(surf->dpy, surf->root, w, h,
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(unsigned int)DefaultDepth(surf->dpy, surf->screen));
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}
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static void
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surface_scissor(XSurface *surf, float x, float y, float w, float h)
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{
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XRectangle clip_rect;
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clip_rect.x = (short)(x-1);
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clip_rect.y = (short)(y-1);
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clip_rect.width = (unsigned short)(w+2);
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clip_rect.height = (unsigned short)(h+2);
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XSetClipRectangles(surf->dpy, surf->gc, 0, 0, &clip_rect, 1, Unsorted);
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}
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static void
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surface_stroke_line(XSurface *surf, short x0, short y0, short x1,
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short y1, unsigned int line_thickness, struct zr_color col)
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{
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unsigned long c = color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, (int)x0, (int)y0, (int)x1, (int)y1);
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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surface_stroke_rect(XSurface* surf, short x, short y, unsigned short w,
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unsigned short h, unsigned short r, unsigned short line_thickness, struct zr_color col)
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{
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unsigned long c = color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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if (r == 0) {
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XFillRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h);
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} else {
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short xc = x + r;
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short yc = y + r;
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short wc = (short)(w - 2 * r);
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short hc = (short)(h - 2 * r);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y, xc+wc, y);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, x+w, yc, x+w, yc+wc);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y+h, xc+wc, y+h);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, x, yc, yc+hc, x);
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XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y,
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(unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64);
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XFillArc(surf->dpy, surf->drawable, surf->gc, x, y,
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(unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64);
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XFillArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r,
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(unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64);
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XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, yc + hc - r,
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(unsigned)r*2, (unsigned)2*r, -90 * 64, 90 * 64);
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}
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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surface_fill_rect(XSurface* surf, short x, short y, unsigned short w,
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unsigned short h, unsigned short r, struct zr_color col)
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{
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unsigned long c = color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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if (r == 0) {
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XFillRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h);
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} else {
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short xc = x + r;
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short yc = y + r;
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short wc = (short)(w - 2 * r);
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short hc = (short)(h - 2 * r);
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XPoint pnts[12];
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pnts[0].x = x;
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pnts[0].y = yc;
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pnts[1].x = xc;
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pnts[1].y = yc;
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pnts[2].x = xc;
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pnts[2].y = y;
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pnts[3].x = xc + wc;
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pnts[3].y = y;
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pnts[4].x = xc + wc;
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pnts[4].y = yc;
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pnts[5].x = x + w;
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pnts[5].y = yc;
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pnts[6].x = x + w;
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pnts[6].y = yc + hc;
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pnts[7].x = xc + wc;
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pnts[7].y = yc + hc;
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pnts[8].x = xc + wc;
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pnts[8].y = y + h;
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pnts[9].x = xc;
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pnts[9].y = y + h;
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pnts[10].x = xc;
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pnts[10].y = yc + hc;
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pnts[11].x = x;
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pnts[11].y = yc + hc;
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XFillPolygon(surf->dpy, surf->drawable, surf->gc, pnts, 12, Convex, CoordModeOrigin);
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XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y,
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(unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64);
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XFillArc(surf->dpy, surf->drawable, surf->gc, x, y,
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(unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64);
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XFillArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r,
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(unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64);
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XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, yc + hc - r,
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(unsigned)r*2, (unsigned)2*r, -90 * 64, 90 * 64);
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}
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}
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static void
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surface_fill_triangle(XSurface *surf, short x0, short y0, short x1,
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short y1, short x2, short y2, struct zr_color col)
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{
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XPoint pnts[3];
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unsigned long c = color_from_byte(&col.r);
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pnts[0].x = (short)x0;
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pnts[0].y = (short)y0;
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pnts[1].x = (short)x1;
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pnts[1].y = (short)y1;
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pnts[2].x = (short)x2;
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pnts[2].y = (short)y2;
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XSetForeground(surf->dpy, surf->gc, c);
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XFillPolygon(surf->dpy, surf->drawable, surf->gc, pnts, 3, Convex, CoordModeOrigin);
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}
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static void
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surface_stroke_triangle(XSurface *surf, short x0, short y0, short x1,
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short y1, short x2, short y2, unsigned short line_thickness, struct zr_color col)
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{
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XPoint pnts[3];
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unsigned long c = color_from_byte(&col.r);
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, x0, y0, x1, y1);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, x1, y1, x2, y2);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, x2, y2, x0, y0);
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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surface_fill_polygon(XSurface *surf, const struct zr_vec2i *pnts, int count,
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struct zr_color col)
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{
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int i = 0;
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#define MAX_POINTS 64
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XPoint xpnts[MAX_POINTS];
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unsigned long c = color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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for (i = 0; i < count && i < MAX_POINTS; ++i) {
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xpnts[i].x = pnts[i].x;
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xpnts[i].y = pnts[i].y;
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}
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XFillPolygon(surf->dpy, surf->drawable, surf->gc, xpnts, count, Convex, CoordModeOrigin);
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#undef MAX_POINTS
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}
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static void
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surface_stroke_polygon(XSurface *surf, const struct zr_vec2i *pnts, int count,
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unsigned short line_thickness, struct zr_color col)
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{
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int i = 0;
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unsigned long c = color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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for (i = 1; i < count; ++i)
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XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[i-1].x, pnts[i-1].y, pnts[i].x, pnts[i].y);
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XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[count-1].x, pnts[count-1].y, pnts[0].x, pnts[0].y);
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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surface_stroke_polyline(XSurface *surf, const struct zr_vec2i *pnts,
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int count, unsigned short line_thickness, struct zr_color col)
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{
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int i = 0;
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unsigned long c = color_from_byte(&col.r);
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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XSetForeground(surf->dpy, surf->gc, c);
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for (i = 0; i < count-1; ++i)
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XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[i].x, pnts[i].y, pnts[i+1].x, pnts[i+1].y);
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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surface_fill_circle(XSurface *surf, short x, short y, unsigned short w,
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unsigned short h, struct zr_color col)
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{
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unsigned long c = color_from_byte(&col.r);
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XSetForeground(surf->dpy, surf->gc, c);
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XFillArc(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y,
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(unsigned)w, (unsigned)h, 0, 360 * 64);
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}
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static void
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surface_stroke_circle(XSurface *surf, short x, short y, unsigned short w,
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unsigned short h, unsigned short line_thickness, struct zr_color col)
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{
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unsigned long c = color_from_byte(&col.r);
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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XSetForeground(surf->dpy, surf->gc, c);
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XDrawArc(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y,
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(unsigned)w, (unsigned)h, 0, 360 * 64);
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XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
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}
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static void
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surface_stroke_curve(XSurface *surf, struct zr_vec2i p1,
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struct zr_vec2i p2, struct zr_vec2i p3, struct zr_vec2i p4,
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unsigned int num_segments, unsigned short line_thickness, struct zr_color col)
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{
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unsigned int i_step;
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float t_step;
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struct zr_vec2i last = p1;
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XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
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num_segments = MAX(num_segments, 1);
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t_step = 1.0f/(float)num_segments;
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for (i_step = 1; i_step <= num_segments; ++i_step) {
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float t = t_step * (float)i_step;
|
|
float u = 1.0f - t;
|
|
float w1 = u*u*u;
|
|
float w2 = 3*u*u*t;
|
|
float w3 = 3*u*t*t;
|
|
float w4 = t * t *t;
|
|
float x = w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x;
|
|
float y = w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y;
|
|
surface_stroke_line(surf, last.x, last.y, (short)x, (short)y, line_thickness,col);
|
|
last.x = (short)x; last.y = (short)y;
|
|
}
|
|
XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
|
|
}
|
|
|
|
static void
|
|
surface_draw_text(XSurface *surf, short x, short y, unsigned short w, unsigned short h,
|
|
const char *text, size_t len, XFont *font, struct zr_color cbg, struct zr_color cfg)
|
|
{
|
|
int tx, ty, th;
|
|
unsigned long bg = color_from_byte(&cbg.r);
|
|
unsigned long fg = color_from_byte(&cfg.r);
|
|
|
|
XSetForeground(surf->dpy, surf->gc, bg);
|
|
XFillRectangle(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y, (unsigned)w, (unsigned)h);
|
|
if(!text || !font || !len) return;
|
|
|
|
tx = (int)x;
|
|
th = font->ascent + font->descent;
|
|
ty = (int)y + font->ascent;
|
|
XSetForeground(surf->dpy, surf->gc, fg);
|
|
if(font->set)
|
|
XmbDrawString(surf->dpy,surf->drawable,font->set,surf->gc,tx,ty,(const char*)text,(int)len);
|
|
else
|
|
XDrawString(surf->dpy, surf->drawable, surf->gc, tx, ty, (const char*)text, (int)len);
|
|
}
|
|
|
|
static void
|
|
surface_clear(XSurface *surf, unsigned long color)
|
|
{
|
|
XSetForeground(surf->dpy, surf->gc, color);
|
|
XFillRectangle(surf->dpy, surf->drawable, surf->gc, 0, 0, surf->w, surf->h);
|
|
}
|
|
|
|
static void
|
|
surface_blit(XSurface *dst_surf, XSurface *src_surf,
|
|
int dst_x, int dst_y, int dst_w, int dst_h,
|
|
int src_x, int src_y, int src_w, int src_h)
|
|
{
|
|
GC gc;
|
|
XImage *dst, *src;
|
|
XGCValues gcvalues;
|
|
int x = 0, y = 0;
|
|
|
|
/*@optimize: there is probably a more performant way to do this since this is slow as FUCK */
|
|
src = XGetImage(src_surf->dpy, src_surf->drawable, 0, 0, src_surf->w, src_surf->h, AllPlanes, ZPixmap);
|
|
dst = XGetImage(dst_surf->dpy, dst_surf->drawable, 0, 0, dst_surf->w, dst_surf->h, AllPlanes, ZPixmap);
|
|
for (y = 0; y < dst_h; ++y) {
|
|
int dst_off_y = dst_y + y;
|
|
int src_off_y = src_y + (int)((float)y * (float)src_h/(float)dst_h);
|
|
for (x = 0; x < dst_w; ++x) {
|
|
unsigned long dpx, spx, pixel;
|
|
struct zr_color dst_col_b, src_col_b, res;
|
|
float dst_col[4], src_col[4], res_col[4];
|
|
int dst_off_x = dst_x + x;
|
|
int src_off_x = src_x + (int)((float)x * (float)src_w/(float)dst_w);
|
|
|
|
/* acquire both source and destination pixel */
|
|
spx = XGetPixel(src, src_off_x, src_off_y);
|
|
dpx = XGetPixel(dst, dst_off_x, dst_off_y);
|
|
|
|
/* convert from 32-bit integer to byte */
|
|
color_to_byte(&dst_col_b.r, dpx);
|
|
color_to_byte(&src_col_b.r, spx);
|
|
|
|
/* convert from byte to float */
|
|
zr_color_f(&dst_col[0], &dst_col[1], &dst_col[2], &dst_col[3], dst_col_b);
|
|
zr_color_f(&src_col[0], &src_col[1], &src_col[2], &src_col[3], src_col_b);
|
|
|
|
/* perform simple alpha-blending */
|
|
res_col[0] = (1.0f - src_col[3]) * dst_col[0] + src_col[3] * src_col[0];
|
|
res_col[1] = (1.0f - src_col[3]) * dst_col[1] + src_col[3] * src_col[1];
|
|
res_col[2] = (1.0f - src_col[3]) * dst_col[2] + src_col[3] * src_col[2];
|
|
res_col[3] = 255;
|
|
|
|
/* convert from float to byte */
|
|
res = zr_rgb_f(res_col[0], res_col[1], res_col[2]);
|
|
pixel = color_from_byte(&res.r);
|
|
|
|
/* finally write pixel to surface */
|
|
XPutPixel(dst, dst_off_x, dst_off_y, pixel);
|
|
}
|
|
}
|
|
gc = XCreateGC(dst_surf->dpy, dst_surf->drawable, 0, &gcvalues);
|
|
XPutImage(dst_surf->dpy, dst_surf->drawable, gc, dst, 0, 0, 0, 0,
|
|
(unsigned int)dst_surf->w, (unsigned int)dst_surf->h);
|
|
XDestroyImage(src);
|
|
XDestroyImage(dst);
|
|
}
|
|
|
|
static void
|
|
surface_blit_to_screen(Drawable target, XSurface *surf, unsigned int width, unsigned int height)
|
|
{
|
|
XCopyArea(surf->dpy, surf->drawable, target, surf->gc, 0, 0, width, height, 0, 0);
|
|
}
|
|
|
|
static void
|
|
surface_del(XSurface *surf)
|
|
{
|
|
XFreePixmap(surf->dpy, surf->drawable);
|
|
XFreeGC(surf->dpy, surf->gc);
|
|
free(surf);
|
|
}
|
|
|
|
static void
|
|
input_key(struct XWindow *xw, struct zr_context *ctx, XEvent *evt, int down)
|
|
{
|
|
int ret;
|
|
KeySym *code = XGetKeyboardMapping(xw->dpy, (KeyCode)evt->xkey.keycode, 1, &ret);
|
|
if (*code == XK_Shift_L || *code == XK_Shift_R)
|
|
zr_input_key(ctx, ZR_KEY_SHIFT, down);
|
|
else if (*code == XK_Delete)
|
|
zr_input_key(ctx, ZR_KEY_DEL, down);
|
|
else if (*code == XK_Return)
|
|
zr_input_key(ctx, ZR_KEY_ENTER, down);
|
|
else if (*code == XK_Tab) {
|
|
zr_input_key(ctx, ZR_KEY_TAB, down);
|
|
} else if (*code == XK_space && !down)
|
|
zr_input_char(ctx, ' ');
|
|
else if (*code == XK_Left)
|
|
zr_input_key(ctx, ZR_KEY_LEFT, down);
|
|
else if (*code == XK_Right)
|
|
zr_input_key(ctx, ZR_KEY_RIGHT, down);
|
|
else if (*code == XK_BackSpace)
|
|
zr_input_key(ctx, ZR_KEY_BACKSPACE, down);
|
|
else {
|
|
if (*code == 'c' && (evt->xkey.state & ControlMask))
|
|
zr_input_key(ctx, ZR_KEY_COPY, down);
|
|
else if (*code == 'v' && (evt->xkey.state & ControlMask))
|
|
zr_input_key(ctx, ZR_KEY_PASTE, down);
|
|
else if (*code == 'x' && (evt->xkey.state & ControlMask))
|
|
zr_input_key(ctx, ZR_KEY_CUT, down);
|
|
else if (!down) {
|
|
KeySym keysym = 0;
|
|
char buf[32];
|
|
XLookupString((XKeyEvent*)evt, buf, 32, &keysym, NULL);
|
|
zr_input_glyph(ctx, buf);
|
|
}
|
|
}
|
|
XFree(code);
|
|
}
|
|
|
|
static void
|
|
input_motion(struct zr_context *ctx, XEvent *evt)
|
|
{
|
|
const int x = evt->xmotion.x;
|
|
const int y = evt->xmotion.y;
|
|
zr_input_motion(ctx, x, y);
|
|
}
|
|
|
|
static void
|
|
input_button(struct zr_context *ctx, XEvent *evt, int down)
|
|
{
|
|
const int x = evt->xbutton.x;
|
|
const int y = evt->xbutton.y;
|
|
if (evt->xbutton.button == Button1)
|
|
zr_input_button(ctx, ZR_BUTTON_LEFT, x, y, down);
|
|
if (evt->xbutton.button == Button2)
|
|
zr_input_button(ctx, ZR_BUTTON_MIDDLE, x, y, down);
|
|
else if (evt->xbutton.button == Button3)
|
|
zr_input_button(ctx, ZR_BUTTON_RIGHT, x, y, down);
|
|
else if (evt->xbutton.button == Button4)
|
|
zr_input_scroll(ctx, 1.0f);
|
|
else if (evt->xbutton.button == Button5)
|
|
zr_input_scroll(ctx, -1.0f);
|
|
}
|
|
|
|
static void
|
|
resize(struct XWindow *xw, XSurface *surf)
|
|
{
|
|
XGetWindowAttributes(xw->dpy, xw->win, &xw->attr);
|
|
xw->width = (unsigned int)xw->attr.width;
|
|
xw->height = (unsigned int)xw->attr.height;
|
|
surface_resize(surf, xw->width, xw->height);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
long dt;
|
|
long started;
|
|
XWindow xw;
|
|
struct demo gui;
|
|
struct zr_user_font font;
|
|
int running = 1;
|
|
|
|
/* X11 */
|
|
UNUSED(argc); UNUSED(argv);
|
|
memset(&xw, 0, sizeof xw);
|
|
if (setlocale(LC_ALL, "") == NULL) return 9;
|
|
if (!XSupportsLocale()) return 10;
|
|
if (!XSetLocaleModifiers("@im=none")) return 11;
|
|
|
|
xw.dpy = XOpenDisplay(NULL);
|
|
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;
|
|
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;
|
|
xw.surf = surface_create(xw.dpy, xw.screen, xw.win, xw.width, xw.height);
|
|
xw.font = font_create(xw.dpy, "fixed");
|
|
|
|
/* GUI */
|
|
font.userdata = zr_handle_ptr(xw.font);
|
|
font.height = (float)xw.font->height;
|
|
font.width = font_get_text_width;
|
|
memset(&gui, 0, sizeof gui);
|
|
gui.memory = calloc(MAX_MEMORY, 1);
|
|
zr_init_fixed(&gui.ctx, gui.memory, MAX_MEMORY, &font);
|
|
|
|
while (running) {
|
|
/* Input */
|
|
XEvent evt;
|
|
started = timestamp();
|
|
zr_input_begin(&gui.ctx);
|
|
while (XCheckWindowEvent(xw.dpy, xw.win, xw.swa.event_mask, &evt)) {
|
|
if (XFilterEvent(&evt, xw.win)) continue;
|
|
if (evt.type == KeyPress)
|
|
input_key(&xw, &gui.ctx, &evt, zr_true);
|
|
else if (evt.type == KeyRelease)
|
|
input_key(&xw, &gui.ctx, &evt, zr_false);
|
|
else if (evt.type == ButtonPress)
|
|
input_button(&gui.ctx, &evt, zr_true);
|
|
else if (evt.type == ButtonRelease)
|
|
input_button(&gui.ctx, &evt, zr_false);
|
|
else if (evt.type == MotionNotify)
|
|
input_motion(&gui.ctx, &evt);
|
|
else if (evt.type == Expose || evt.type == ConfigureNotify)
|
|
resize(&xw, xw.surf);
|
|
else if (evt.type == KeymapNotify)
|
|
XRefreshKeyboardMapping(&evt.xmapping);
|
|
}
|
|
zr_input_end(&gui.ctx);
|
|
|
|
/* GUI */
|
|
running = run_demo(&gui);
|
|
|
|
/* Draw */
|
|
XClearWindow(xw.dpy, xw.win);
|
|
surface_clear(xw.surf, 0x00303030);
|
|
{
|
|
const struct zr_command *cmd;
|
|
zr_foreach(cmd, &gui.ctx) {
|
|
switch (cmd->type) {
|
|
case ZR_COMMAND_NOP: break;
|
|
case ZR_COMMAND_SCISSOR: {
|
|
const struct zr_command_scissor *s = zr_command(scissor, cmd);
|
|
surface_scissor(xw.surf, s->x, s->y, s->w, s->h);
|
|
} break;
|
|
case ZR_COMMAND_LINE: {
|
|
const struct zr_command_line *l = zr_command(line, cmd);
|
|
surface_stroke_line(xw.surf, l->begin.x, l->begin.y, l->end.x,
|
|
l->end.y, l->line_thickness, l->color);
|
|
} break;
|
|
case ZR_COMMAND_RECT: {
|
|
const struct zr_command_rect *r = zr_command(rect, cmd);
|
|
surface_stroke_rect(xw.surf, r->x, r->y, r->w, r->h,
|
|
(uint16_t)r->rounding, r->line_thickness, r->color);
|
|
} break;
|
|
case ZR_COMMAND_RECT_FILLED: {
|
|
const struct zr_command_rect_filled *r = zr_command(rect_filled, cmd);
|
|
surface_fill_rect(xw.surf, r->x, r->y, r->w, r->h,
|
|
(uint16_t)r->rounding, r->color);
|
|
} break;
|
|
case ZR_COMMAND_CIRCLE: {
|
|
const struct zr_command_circle *c = zr_command(circle, cmd);
|
|
surface_stroke_circle(xw.surf, c->x, c->y, c->w, c->h, c->line_thickness, c->color);
|
|
} break;
|
|
case ZR_COMMAND_CIRCLE_FILLED: {
|
|
const struct zr_command_circle_filled *c = zr_command(circle_filled, cmd);
|
|
surface_fill_circle(xw.surf, c->x, c->y, c->w, c->h, c->color);
|
|
} break;
|
|
case ZR_COMMAND_TRIANGLE: {
|
|
const struct zr_command_triangle*t = zr_command(triangle, cmd);
|
|
surface_stroke_triangle(xw.surf, 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 ZR_COMMAND_TRIANGLE_FILLED: {
|
|
const struct zr_command_triangle_filled *t = zr_command(triangle_filled, cmd);
|
|
surface_fill_triangle(xw.surf, t->a.x, t->a.y, t->b.x, t->b.y,
|
|
t->c.x, t->c.y, t->color);
|
|
} break;
|
|
case ZR_COMMAND_POLYGON: {
|
|
const struct zr_command_polygon *p = zr_command(polygon, cmd);
|
|
surface_stroke_polygon(xw.surf, p->points, p->point_count, p->line_thickness,p->color);
|
|
} break;
|
|
case ZR_COMMAND_POLYGON_FILLED: {
|
|
const struct zr_command_polygon_filled *p = zr_command(polygon_filled, cmd);
|
|
surface_fill_polygon(xw.surf, p->points, p->point_count, p->color);
|
|
} break;
|
|
case ZR_COMMAND_POLYLINE: {
|
|
const struct zr_command_polyline *p = zr_command(polyline, cmd);
|
|
surface_stroke_polyline(xw.surf, p->points, p->point_count, p->line_thickness, p->color);
|
|
} break;
|
|
case ZR_COMMAND_TEXT: {
|
|
const struct zr_command_text *t = zr_command(text, cmd);
|
|
surface_draw_text(xw.surf, t->x, t->y, t->w, t->h,
|
|
(const char*)t->string, t->length,
|
|
(XFont*)t->font->userdata.ptr,
|
|
t->background, t->foreground);
|
|
} break;
|
|
case ZR_COMMAND_CURVE: {
|
|
const struct zr_command_curve *q = zr_command(curve, cmd);
|
|
surface_stroke_curve(xw.surf, q->begin, q->ctrl[0], q->ctrl[1],
|
|
q->end, 22, q->line_thickness, q->color);
|
|
} break;
|
|
case ZR_COMMAND_RECT_MULTI_COLOR:
|
|
case ZR_COMMAND_IMAGE:
|
|
case ZR_COMMAND_ARC:
|
|
case ZR_COMMAND_ARC_FILLED:
|
|
default: break;
|
|
}
|
|
}
|
|
zr_clear(&gui.ctx);
|
|
}
|
|
surface_blit_to_screen(xw.win, xw.surf, xw.width, xw.height);
|
|
XFlush(xw.dpy);
|
|
|
|
/* Timing */
|
|
dt = timestamp() - started;
|
|
if (dt < DTIME)
|
|
sleep_for(DTIME - dt);
|
|
}
|
|
free(gui.memory);
|
|
font_del(xw.dpy, xw.font);
|
|
surface_del(xw.surf);
|
|
XUnmapWindow(xw.dpy, xw.win);
|
|
XFreeColormap(xw.dpy, xw.cmap);
|
|
XDestroyWindow(xw.dpy, xw.win);
|
|
XCloseDisplay(xw.dpy);
|
|
return 0;
|
|
}
|
|
|