polybar/include/components/x11/draw.hpp

62 lines
1.9 KiB
C++

#pragma once
#include <xcb/xcbext.h>
#include "common.hpp"
#include "components/x11/color.hpp"
#include "components/x11/connection.hpp"
#include "utils/string.hpp"
LEMONBUDDY_NS
namespace draw_util {
/**
* Fill region of drawable with color defined by gcontext
*/
inline void fill(connection& c, xcb_drawable_t d, xcb_gcontext_t g, int16_t x, int16_t y,
uint16_t w, uint16_t h) {
array<xcb_rectangle_t, 1> rects{{xcb_rectangle_t({x, y, w, h})}};
c.poly_fill_rectangle(d, g, rects.size(), rects.data());
}
/**
* The xcb version of this function does not compose the correct request
*
* Code: http://wmdia.sourceforge.net/
*/
auto xcb_poly_text_16_patched(xcb_connection_t* conn, xcb_drawable_t d, xcb_gcontext_t gc,
int16_t x, int16_t y, uint32_t len, uint16_t* str) {
static const xcb_protocol_request_t xcb_req = {
5, // count
0, // ext
XCB_POLY_TEXT_16, // opcode
1 // isvoid
};
struct iovec xcb_parts[7];
uint8_t xcb_lendelta[2];
xcb_void_cookie_t xcb_ret;
xcb_poly_text_8_request_t xcb_out;
xcb_out.pad0 = 0;
xcb_out.drawable = d;
xcb_out.gc = gc;
xcb_out.x = x;
xcb_out.y = y;
xcb_lendelta[0] = len;
xcb_lendelta[1] = 0;
xcb_parts[2].iov_base = reinterpret_cast<char*>(&xcb_out);
xcb_parts[2].iov_len = sizeof(xcb_out);
xcb_parts[3].iov_base = 0;
xcb_parts[3].iov_len = -xcb_parts[2].iov_len & 3;
xcb_parts[4].iov_base = xcb_lendelta;
xcb_parts[4].iov_len = sizeof(xcb_lendelta);
xcb_parts[5].iov_base = reinterpret_cast<char*>(str);
xcb_parts[5].iov_len = len * sizeof(int16_t);
xcb_parts[6].iov_base = 0;
xcb_parts[6].iov_len = -(xcb_parts[4].iov_len + xcb_parts[5].iov_len) & 3;
xcb_ret.sequence = xcb_send_request(conn, 0, xcb_parts + 2, &xcb_req);
return xcb_ret;
}
}
LEMONBUDDY_NS_END