int click_knowledge_handler(window_info *win, int mx, int my, Uint32 flags)
{
int x,y,idx;
Uint8 str[3];
x= mx;
y= my;
if(x > win->len_x-win->box_size)
return 0;
if(y > booklist_y_len)
return 0;
if(flags&ELW_WHEEL_UP) {
vscrollbar_scroll_up(win->window_id, knowledge_scroll_id);
return 1;
} else if(flags&ELW_WHEEL_DOWN) {
vscrollbar_scroll_down(win->window_id, knowledge_scroll_id);
return 1;
} else {
selected_book = -1;
x = (x < (win->len_x-win->box_size)/2) ?0 :1;
y/=booklist_y_step;
idx = x + 2 *(y + vscrollbar_get_pos (win->window_id, knowledge_scroll_id));
if(idx < knowledge_count)
{
str[0] = GET_KNOWLEDGE_INFO;
*(Uint16 *)(str+1) = SDL_SwapLE16((short)idx);
my_tcp_send(my_socket,str,3);
raw_knowledge_string[0] = '\0';
// Check if we display the book image and label
knowledge_book_id = idx;
if (knowledge_list[idx].present && knowledge_list[idx].has_book) {
widget_unset_flags (win->window_id, knowledge_book_image_id, WIDGET_DISABLED);
widget_unset_flags (win->window_id, knowledge_book_label_id, WIDGET_DISABLED);
} else {
widget_set_flags(win->window_id, knowledge_book_image_id, WIDGET_DISABLED);
widget_set_flags(win->window_id, knowledge_book_label_id, WIDGET_DISABLED);
}
selected_book = idx;
}
do_click_sound();
}
return 1;
}
static void update_note_button_scrollbar(int nr)
{
int max_nr_rows = note_button_scroll_height / (note_button_height + note_button_y_space);
int nr_rows = (nr_notes+1) / 2;
if (nr_rows <= max_nr_rows)
{
widget_set_flags (main_note_tab_id, note_button_scroll_id, WIDGET_INVISIBLE|WIDGET_DISABLED);
vscrollbar_set_bar_len (main_note_tab_id, note_button_scroll_id, 0);
scroll_to_note_button (0);
}
else
{
widget_unset_flags (main_note_tab_id, note_button_scroll_id, WIDGET_INVISIBLE|WIDGET_DISABLED);
vscrollbar_set_bar_len (main_note_tab_id, note_button_scroll_id, nr_rows - max_nr_rows);
scroll_to_note_button (nr);
}
}
void note_button_set_pos (int id)
{
int scroll_pos = vscrollbar_get_pos (main_note_tab_id, note_button_scroll_id);
int max_nr_rows = note_button_scroll_height / (note_button_height + note_button_y_space);
int row = id / 2 - scroll_pos;
if (row < 0 || row >= max_nr_rows)
{
widget_set_flags (main_note_tab_id, note_list[id].button_id, WIDGET_INVISIBLE);
}
else
{
int x = 5 + (id % 2) * (note_button_width + note_button_x_space);
int y = 50 + (note_button_height + note_button_y_space) * row;
widget_unset_flags (main_note_tab_id, note_list[id].button_id, WIDGET_INVISIBLE);
widget_move (main_note_tab_id, note_list[id].button_id, x, y);
}
}