git.demorecorder.com Git - free-sw/xcb/demo/blob - xcbdpyinfo.c

   1 #include <xcb/xcb.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5
   6 xcb_connection_t *c;
   7
   8 void print_setup();
   9 void print_formats();
  10 void list_extensions(void (*)(int, char *));
  11 void print_extension(int, char *);
  12 void query_extension(int, char *);
  13 void list_screens();
  14 void print_screen(xcb_screen_t *s);
  15
  16 int main(int argc, char **argv)
  17 {
  18     void (*ext_printer)(int, char *) = print_extension;
  19     int screen;
  20
  21     c = xcb_connect(0, &screen);
  22     if(!c)
  23     {
  24         fputs("Connect failed.\n", stderr);
  25         exit(1);
  26     }
  27
  28     for(--argc; argc; --argc)
  29         if(!strcmp(argv[argc], "-queryExtensions"))
  30             ext_printer = query_extension;
  31
  32     /* "name of display:    %s" "\n" */
  33     print_setup(c);
  34     /* "\n" "focus:  window 0x%x, revert to %s" (e.g. PointerRoot) */
  35     list_extensions(ext_printer);
  36     printf("\n" "default screen number:    %d", screen);
  37     list_screens();
  38     fputs("\n", stdout);
  39
  40     xcb_disconnect(c);
  41
  42     exit(0);
  43 }
  44
  45 void print_setup()
  46 {
  47     printf("version number:    %d.%d", xcb_get_setup(c)->protocol_major_version, xcb_get_setup(c)->protocol_minor_version);
  48     fputs("\n" "vendor string:    ", stdout);
  49     fwrite(xcb_setup_vendor(xcb_get_setup(c)), 1, xcb_setup_vendor_length(xcb_get_setup(c)), stdout);
  50     printf("\n" "vendor release number:    %d", (int) xcb_get_setup(c)->release_number);
  51     /* "\n" "XFree86 version: %d.%d.%d.%d" */
  52     printf("\n" "maximum request size:  %d bytes", xcb_get_setup(c)->maximum_request_length * 4);
  53     printf("\n" "motion buffer size:  %d", (int)xcb_get_setup(c)->motion_buffer_size);
  54     printf("\n" "bitmap unit, bit order, padding:    %d, %s, %d", xcb_get_setup(c)->bitmap_format_scanline_unit, (xcb_get_setup(c)->bitmap_format_bit_order == XCB_IMAGE_ORDER_LSB_FIRST) ? "LSBFirst" : "MSBFirst", xcb_get_setup(c)->bitmap_format_scanline_pad);
  55     printf("\n" "image byte order:    %s", (xcb_get_setup(c)->image_byte_order == XCB_IMAGE_ORDER_LSB_FIRST) ? "LSBFirst" : "MSBFirst");
  56
  57     print_formats();
  58
  59     printf("\n" "keycode range:    minimum %d, maximum %d", xcb_get_setup(c)->min_keycode, xcb_get_setup(c)->max_keycode);
  60 }
  61
  62 void print_formats()
  63 {
  64     int i = xcb_setup_pixmap_formats_length(xcb_get_setup(c));
  65     xcb_format_t *p = xcb_setup_pixmap_formats(xcb_get_setup(c));
  66     printf("\n" "number of supported pixmap formats:    %d", i);
  67     fputs("\n" "supported pixmap formats:", stdout);
  68     for(--i; i >= 0; --i, ++p)
  69         printf("\n" "    depth %d, bits_per_pixel %d, scanline_pad %d", p->depth, p->bits_per_pixel, p->scanline_pad);
  70 }
  71
  72 void list_extensions(void (*ext_printer)(int, char *))
  73 {
  74     xcb_list_extensions_reply_t *r;
  75     xcb_str_iterator_t i;
  76
  77     r = xcb_list_extensions_reply(c, xcb_list_extensions(c), 0);
  78     if(!r)
  79     {
  80         fputs("ListExtensions failed.\n", stderr);
  81         return;
  82     }
  83
  84     i = xcb_list_extensions_names_iterator(r);
  85     printf("\n" "number of extensions:    %d", i.rem);
  86     for(; i.rem; xcb_str_next(&i))
  87     {
  88         fputs("\n" "    ", stdout);
  89         ext_printer(xcb_str_name_length(i.data), xcb_str_name(i.data));
  90     }
  91     free(r);
  92 }
  93
  94 void print_extension(int len, char *name)
  95 {
  96     fwrite(name, 1, len, stdout);
  97 }
  98
  99 void query_extension(int len, char *name)
 100 {
 101     xcb_query_extension_reply_t *r;
 102     int comma = 0;
 103
 104     r = xcb_query_extension_reply(c, xcb_query_extension(c, len, name), 0);
 105     if(!r)
 106     {
 107         fputs("QueryExtension failed.\n", stderr);
 108         return;
 109     }
 110
 111     print_extension(len, name);
 112     fputs("  (", stdout);
 113     if(r->major_opcode)
 114     {
 115         printf("opcode: %d", r->major_opcode);
 116         comma = 1;
 117     }
 118     if(r->first_event)
 119     {
 120         if(comma)
 121             fputs(", ", stdout);
 122         printf("base event: %d", r->first_event);
 123         comma = 1;
 124     }
 125     if(r->first_error)
 126     {
 127         if(comma)
 128             fputs(", ", stdout);
 129         printf("base error: %d", r->first_error);
 130     }
 131     fputs(")", stdout);
 132 }
 133
 134 void list_screens()
 135 {
 136     xcb_screen_iterator_t i;
 137     int cur;
 138
 139     i = xcb_setup_roots_iterator(xcb_get_setup(c));
 140     printf("\n" "number of screens:    %d" "\n", i.rem);
 141     for(cur = 1; i.rem; xcb_screen_next(&i), ++cur)
 142     {
 143         printf("\n" "screen #%d:", cur);
 144         print_screen(i.data);
 145     }
 146 }
 147
 148 void print_screen(xcb_screen_t *s)
 149 {
 150     printf("\n" "  dimensions:    %dx%d pixels (%dx%d millimeters)", s->width_in_pixels, s->height_in_pixels, s->width_in_millimeters, s->height_in_millimeters);
 151 }