156 lines
3.7 KiB
C
156 lines
3.7 KiB
C
/*
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** mlx_new_image.c for MiniLibX in raytraceur
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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 Aug 14 15:29:14 2000 Charlie Root
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** Last update Wed May 25 16:46:31 2011 Olivier Crouzet
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*/
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#include "mlx_int.h"
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/*
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** To handle X errors
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*/
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#define X_ShmAttach 1
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int mlx_X_error;
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int shm_att_pb(Display *d,XErrorEvent *ev)
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{
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if (ev->request_code==146 && ev->minor_code==X_ShmAttach)
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write(2,WARN_SHM_ATTACH,strlen(WARN_SHM_ATTACH));
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mlx_X_error = 1;
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}
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/*
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** Data malloc : width+32 ( bitmap_pad=32 ), *4 = *32 / 8bit
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*/
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void *mlx_int_new_xshm_image(t_xvar *xvar,int width,int height,int format)
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{
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t_img *img;
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int (*save_handler)();
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if (!(img = malloc(sizeof(*img))))
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return ((void *)0);
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bzero(img,sizeof(*img));
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img->data = 0;
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img->image = XShmCreateImage(xvar->display,xvar->visual,xvar->depth,
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format,img->data,&(img->shm),width,height);
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if (!img->image)
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{
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free(img);
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return ((void *)0);
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}
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img->width = width;
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img->height = height;
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img->size_line = img->image->bytes_per_line;
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img->bpp = img->image->bits_per_pixel;
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img->format = format;
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img->shm.shmid = shmget(IPC_PRIVATE,(width+32)*height*4,IPC_CREAT|0777);
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if (img->shm.shmid==-1)
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{
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XDestroyImage(img->image);
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free(img);
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return ((void *)0);
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}
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img->data = img->shm.shmaddr = img->image->data = shmat(img->shm.shmid,0,0);
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if (img->data==(void *)-1)
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{
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shmctl(img->shm.shmid,IPC_RMID,0);
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XDestroyImage(img->image);
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free(img);
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return ((void *)0);
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}
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img->shm.readOnly = False;
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mlx_X_error = 0;
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save_handler = XSetErrorHandler(shm_att_pb);
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if (!XShmAttach(xvar->display,&(img->shm)) ||
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0&XSync(xvar->display,False) || mlx_X_error)
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{
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XSetErrorHandler(save_handler);
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shmdt(img->data);
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shmctl(img->shm.shmid,IPC_RMID,0);
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XDestroyImage(img->image);
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free(img);
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return ((void *)0);
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}
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XSetErrorHandler(save_handler);
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shmctl(img->shm.shmid,IPC_RMID,0);
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if (xvar->pshm_format==format)
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{
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img->pix = XShmCreatePixmap(xvar->display,xvar->root,img->shm.shmaddr,
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&(img->shm),width,height,xvar->depth);
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img->type = MLX_TYPE_SHM_PIXMAP;
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}
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else
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{
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img->pix = XCreatePixmap(xvar->display,xvar->root,
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width,height,xvar->depth);
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img->type = MLX_TYPE_SHM;
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}
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if (xvar->do_flush)
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XFlush(xvar->display);
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return (img);
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}
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void *mlx_int_new_image(t_xvar *xvar,int width, int height,int format)
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{
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t_img *img;
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if (!(img = malloc(sizeof(*img))) ||
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!(img->data = malloc((width+32)*height*4)))
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return ((void *)0);
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bzero(img->data,(width+32)*height*4);
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img->image = XCreateImage(xvar->display,xvar->visual,xvar->depth,format,0,
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img->data,width,height,32,0);
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if (!img->image)
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{
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free(img->data);
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free(img);
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return ((void *)0);
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}
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img->gc = 0;
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img->size_line = img->image->bytes_per_line;
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img->bpp = img->image->bits_per_pixel;
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img->width = width;
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img->height = height;
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img->pix = XCreatePixmap(xvar->display,xvar->root,width,height,xvar->depth);
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img->format = format;
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img->type = MLX_TYPE_XIMAGE;
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if (xvar->do_flush)
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XFlush(xvar->display);
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return (img);
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}
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void *mlx_new_image(t_xvar *xvar,int width, int height)
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{
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t_img *img;
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if (xvar->use_xshm)
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if (img = mlx_int_new_xshm_image(xvar,width,height,ZPixmap))
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return (img);
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return (mlx_int_new_image(xvar,width,height,ZPixmap));
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}
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void *mlx_new_image2(t_xvar *xvar,int width, int height)
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{
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t_img *img;
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if (xvar->use_xshm)
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if (img = mlx_int_new_xshm_image(xvar,width,height,XYPixmap))
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return (img);
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return (mlx_int_new_image(xvar,width,height,XYPixmap));
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}
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