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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <X11/keysym.h>
#include <xcb/xcb_keysyms.h>
#include "x.h"
#include "types.h"
Server_context_t *init_XCB_server();
xcb_window_t create_win(Server_context_t *info);
Server_context_t *init_XCB_server()
{
Server_context_t *info;
if (!(info = malloc(sizeof(Server_context_t)))) {
fprintf(stderr, "memory allocation failed.\n");
return NULL;
}
info->con = xcb_connect(NULL, &info->scr_nbr);
if (xcb_connection_has_error(info->con) > 0) {
fprintf(stderr, "Error opening display.\n");
free(info);
return NULL;
}
info->iter = xcb_setup_roots_iterator(xcb_get_setup(info->con));
for (; info->iter.rem; --info->scr_nbr, xcb_screen_next(&info->iter))
if (info->scr_nbr == 0) {
info->scr = info->iter.data;
break;
}
return info;
}
xcb_window_t create_win(Server_context_t *info)
{
xcb_gcontext_t gc;
xcb_window_t win;
u32 vmask, vlist[2];
// create gc
win = info->scr->root;
gc = xcb_generate_id(info->con);
vmask = XCB_GC_FOREGROUND |
/*
XCB_GC_LINE_WIDTH |
XCB_GC_LINE_STYLE |
XCB_GC_FILL_STYLE |
XCB_GC_ARC_MODE |
*/
XCB_GC_GRAPHICS_EXPOSURES;
vlist[0] = info->scr->black_pixel;
vlist[1] = 0;
xcb_create_gc (info->con, gc, win, vmask, vlist);
// create window
win = xcb_generate_id(info->con);
vmask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
vlist[0] = /* 0 */ info->scr->white_pixel;
vlist[1] = XCB_EVENT_MASK_EXPOSURE | // window is exposed, needs to be redrawn
XCB_EVENT_MASK_BUTTON_PRESS |
XCB_EVENT_MASK_BUTTON_RELEASE |
XCB_EVENT_MASK_BUTTON_1_MOTION | // mouse is dragging
XCB_EVENT_MASK_POINTER_MOTION | // mouse is moving without clicking
XCB_MOTION_NOTIFY |
XCB_EVENT_MASK_BUTTON_MOTION |
/*
XCB_MOTION_NOTIFY |
XCB_EVENT_MASK_EXPOSURE |
XCB_EVENT_MASK_BUTTON_PRESS |
XCB_EVENT_MASK_BUTTON_RELEASE; // keyboard
XCB_KEY_PRESS |
XCB_EVENT_MASK_KEY_PRESS |
*/
XCB_KEY_PRESS |
XCB_KEY_RELEASE;
xcb_create_window(info->con,
XCB_COPY_FROM_PARENT,
win,
info->scr->root,
0, 0,
info->scr->width_in_pixels,
info->scr->height_in_pixels,
10, // boarder width
XCB_WINDOW_CLASS_INPUT_OUTPUT,
info->scr->root_visual,
vmask, vlist
);
xcb_map_window(info->con, win);
xcb_flush(info->con);
return win;
}
xcb_cursor_t cursor_set(xcb_connection_t *c, xcb_screen_t *scr, xcb_window_t win, u32 cid)
{
xcb_font_t font;
xcb_cursor_t ptr;
u32 mask;
u32 value_list;
font = xcb_generate_id(c);
xcb_open_font(c, font, strlen("cursor"), "cursor");
ptr = xcb_generate_id(c);
xcb_create_glyph_cursor(c,
ptr,
font, font,
cid, cid,
0, 0, 0,
0, 0, 0);
mask = XCB_CW_CURSOR;
value_list = ptr;
xcb_change_window_attributes(c, win, mask, &value_list);
xcb_flush(c);
return ptr;
}
void cursor_die(xcb_connection_t *c, xcb_window_t win, u32 value_list)
{
value_list = 0;
xcb_change_window_attributes(c, win, XCB_CW_CURSOR, &value_list);
// xcb_free_cursor(c, value_list);
xcb_flush(c);
}
const char *ksym_to_str(const xcb_keysym_t *ksym)
{
switch (*ksym) {
case XK_Escape: return "Escape";
case XK_q: return "q";
case XK_Q: return "Q";
case XK_l: return "l";
case XK_w: return "w";
case XK_c: return "c";
case XK_r: return "r";
default: return NULL;
}
return NULL;
}
void die(xcb_key_symbols_t *sym, Server_context_t *s_info, xcb_drawable_t win)
{
xcb_key_symbols_free(sym);
xcb_free_gc(s_info->con, win);
xcb_disconnect(s_info->con);
free(s_info);
exit(0);
}
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