100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
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/*
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** mlx_init.c for MiniLibX in
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**
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** Made by Charlie Root
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** Login <ol@epitech.net>
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**
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** Started on Mon Jul 31 16:52:42 2000 Charlie Root
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** Last update Fri Jan 28 17:05:09 2005 Olivier Crouzet
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*/
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#include "mlx_int.h"
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void *mlx_init()
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{
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t_xvar *xvar;
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if (!(xvar = malloc(sizeof(*xvar))))
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return ((void*)0);
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if ((xvar->display = XOpenDisplay("")) == 0)
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{
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free(xvar);
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return ((void*)0);
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}
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xvar->screen = DefaultScreen(xvar->display);
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xvar->root = DefaultRootWindow(xvar->display);
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xvar->cmap = DefaultColormap(xvar->display,xvar->screen);
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xvar->depth = DefaultDepth(xvar->display,xvar->screen);
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if (mlx_int_get_visual(xvar)==-1)
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{
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printf(ERR_NO_TRUECOLOR);
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exit(1);
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}
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xvar->win_list = 0;
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xvar->loop_hook = 0;
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xvar->loop_param = (void *)0;
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xvar->do_flush = 1;
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xvar->wm_delete_window = XInternAtom (xvar->display, "WM_DELETE_WINDOW", False);
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xvar->wm_protocols = XInternAtom (xvar->display, "WM_PROTOCOLS", False);
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mlx_int_deal_shm(xvar);
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if (xvar->private_cmap)
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xvar->cmap = XCreateColormap(xvar->display,xvar->root,
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xvar->visual,AllocNone);
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mlx_int_rgb_conversion(xvar);
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xvar->end_loop = 0;
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return (xvar);
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}
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/*
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** pshm_format of -1 : Not XYBitmap|XYPixmap|ZPixmap
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** alpha libX need a check of the DISPLAY env var, or shm is allowed
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** in remote Xserver connections.
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*/
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int mlx_int_deal_shm(t_xvar *xvar)
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{
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int use_pshm;
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int bidon;
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char *dpy;
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char buff[33];
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xvar->use_xshm = XShmQueryVersion(xvar->display,&bidon,&bidon,&(use_pshm));
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if (xvar->use_xshm && use_pshm)
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xvar->pshm_format = XShmPixmapFormat(xvar->display);
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else
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xvar->pshm_format = -1;
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gethostname(buff,32);
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dpy = getenv(ENV_DISPLAY);
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if (dpy && strlen(dpy) && *dpy!=':' && strncmp(dpy,buff,strlen(buff)) &&
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strncmp(dpy,LOCALHOST,strlen(LOCALHOST)) )
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{
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xvar->pshm_format = -1;
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xvar->use_xshm = 0;
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}
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}
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/*
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** TrueColor Visual is needed to have *_mask correctly set
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*/
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int mlx_int_rgb_conversion(t_xvar *xvar)
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{
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bzero(xvar->decrgb,sizeof(int)*6);
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while (!(xvar->visual->red_mask&1))
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{ xvar->visual->red_mask >>= 1; xvar->decrgb[0] ++; }
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while (xvar->visual->red_mask&1)
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{ xvar->visual->red_mask >>= 1; xvar->decrgb[1] ++; }
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while (!(xvar->visual->green_mask&1))
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{ xvar->visual->green_mask >>= 1; xvar->decrgb[2] ++; }
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while (xvar->visual->green_mask&1)
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{ xvar->visual->green_mask >>= 1; xvar->decrgb[3] ++; }
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while (!(xvar->visual->blue_mask&1))
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{ xvar->visual->blue_mask >>= 1; xvar->decrgb[4] ++; }
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while (xvar->visual->blue_mask&1)
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{ xvar->visual->blue_mask >>= 1; xvar->decrgb[5] ++; }
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}
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