/** Draws a black background with white text.
Should be calld when an expose event is received.
*/
void redraw() {
// convert the text to be displayed.
xcb_char2b_t *str = char2b(text);
// get the dimensions of the text
xcb_query_text_extents_cookie_t cookie =
xcb_query_text_extents(con, font, text.size(), str);
delete[] str;
xcb_generic_error_t *error;
xcb_query_text_extents_reply_t *reply =
xcb_query_text_extents_reply(con, cookie, &error);
if(error)
{
std::cerr << "Could not query text extents." << std::endl;
exit(1);
}
// draw the text in the middle of the window.
xcb_image_text_8(con, text.size(), win, txt_gc,
width/2 - reply->overall_width/2, height/2, text.c_str());
free(reply);
xcb_flush(con);
}
static void
_e_alert_draw_button_text(void)
{
xcb_char2b_t *str = NULL;
xcb_query_text_extents_cookie_t cookie;
xcb_query_text_extents_reply_t *reply;
int x = 0, w = 0, bw = 0;
bw = (WINDOW_WIDTH / 2) - 40 - 1;
/* draw button1 text */
str = _e_alert_build_string(str1);
cookie =
xcb_query_text_extents_unchecked(conn, font, strlen(str1), str);
reply = xcb_query_text_extents_reply(conn, cookie, NULL);
if (reply)
{
w = reply->overall_width;
free(reply);
}
free(str);
x = (5 + ((bw - w) / 2));
xcb_image_text_8(conn, strlen(str1), btn1, gc, x, (10 + fa), str1);
/* draw button2 text */
str = _e_alert_build_string(str2);
cookie =
xcb_query_text_extents_unchecked(conn, font, strlen(str2), str);
reply = xcb_query_text_extents_reply(conn, cookie, NULL);
if (reply)
{
w = reply->overall_width;
free(reply);
}
free(str);
x = (5 + ((bw - w) / 2));
xcb_image_text_8(conn, strlen(str2), btn2, gc, x, (10 + fa), str2);
}
/** Predict text width
*/
int cal_text_width(const char *text, int len) {
xcb_query_text_extents_cookie_t cookie;
xcb_query_text_extents_reply_t *reply;
cookie = xcb_query_text_extents(nil_.con, nil_.font.id, len, (xcb_char2b_t*)text);
reply = xcb_query_text_extents_reply(nil_.con, cookie, 0);
if (!reply) {
NIL_ERR("get text extents %s", text);
return 7; /* minimum */
}
len = reply->overall_width;
free(reply);
return len;
}
static void
_e_alert_display(void)
{
xcb_char2b_t *str = NULL;
xcb_query_text_extents_cookie_t cookie;
xcb_query_text_extents_reply_t *reply;
int x = 0, w = 0;
tainted = _e_alert_root_tainted_get();
str = _e_alert_build_string(title);
cookie =
xcb_query_text_extents_unchecked(conn, font, strlen(title), str);
reply = xcb_query_text_extents_reply(conn, cookie, NULL);
if (reply)
{
fa = reply->font_ascent;
fh = (fa + reply->font_descent);
fw = reply->overall_width;
free(reply);
}
free(str);
/* move buttons */
x = 20;
w = (WINDOW_WIDTH / 2) - 40;
_e_alert_button_move_resize(btn1, x, WINDOW_HEIGHT - 20 - (fh + 20),
w, (fh + 20));
x = ((WINDOW_WIDTH / 2) + 20);
_e_alert_button_move_resize(btn2, x, WINDOW_HEIGHT - 20 - (fh + 20),
w, (fh + 20));
comp_win = _e_alert_comp_win_get();
if (comp_win)
{
xcb_rectangle_t rect;
int wx = 0, wy = 0;
wx = ((sw - WINDOW_WIDTH) / 2);
wy = ((sh - WINDOW_HEIGHT) / 2);
rect.x = wx;
rect.y = wy;
rect.width = WINDOW_WIDTH;
rect.height = WINDOW_HEIGHT;
xcb_shape_rectangles(conn, XCB_SHAPE_SO_SET,
XCB_SHAPE_SK_INPUT, XCB_CLIP_ORDERING_UNSORTED,
comp_win, 0, 0, 1, &rect);
xcb_reparent_window(conn, win, comp_win, wx, wy);
}
/* map and raise main window */
xcb_map_window(conn, win);
_e_alert_window_raise(win);
/* grab pointer & keyboard */
xcb_grab_pointer_unchecked(conn, 0, win,
(XCB_EVENT_MASK_BUTTON_PRESS |
XCB_EVENT_MASK_BUTTON_RELEASE),
XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC,
XCB_NONE, XCB_NONE, XCB_CURRENT_TIME);
xcb_grab_keyboard_unchecked(conn, 0, win, XCB_CURRENT_TIME,
XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT,
win, XCB_CURRENT_TIME);
/* flush screen */
xcb_flush(conn);
/* sync */
_e_alert_sync();
}