void ttext_box::delete_char(const bool before_cursor)
{
if(before_cursor) {
set_cursor(get_selection_start() - 1, false);
}
set_selection_length(1);
delete_selection();
}
void ttext_box::update_canvas()
{
/***** Gather the info *****/
// Set the cursor info.
const unsigned start = get_selection_start();
const int length = get_selection_length();
set_maximum_length(max_input_length_);
PangoEllipsizeMode ellipse_mode = PANGO_ELLIPSIZE_NONE;
if(!can_wrap()) {
if((start + length) > (get_length() / 2)) {
ellipse_mode = PANGO_ELLIPSIZE_START;
} else {
ellipse_mode = PANGO_ELLIPSIZE_END;
}
}
set_ellipse_mode(ellipse_mode);
// Set the selection info
unsigned start_offset = 0;
unsigned end_offset = 0;
if(length == 0) {
// No nothing.
} else if(length > 0) {
start_offset = get_cursor_position(start).x;
end_offset = get_cursor_position(start + length).x;
} else {
start_offset = get_cursor_position(start + length).x;
end_offset = get_cursor_position(start).x;
}
/***** Set in all canvases *****/
const int max_width = get_text_maximum_width();
const int max_height = get_text_maximum_height();
for(auto & tmp : canvas())
{
tmp.set_variable("text", variant(get_value()));
tmp.set_variable("text_x_offset", variant(text_x_offset_));
tmp.set_variable("text_y_offset", variant(text_y_offset_));
tmp.set_variable("text_maximum_width", variant(max_width));
tmp.set_variable("text_maximum_height", variant(max_height));
tmp.set_variable("cursor_offset",
variant(get_cursor_position(start + length).x));
tmp.set_variable("selection_offset", variant(start_offset));
tmp.set_variable("selection_width", variant(end_offset - start_offset));
tmp.set_variable("text_wrap_mode", variant(ellipse_mode));
}
}
void tpassword_box::pre_function() {
// ttext_box::set_value() will reset the selection,
// we therefore have to remember it
size_t selection_start = get_selection_start();
size_t selection_length = get_selection_length();
// Tell ttext_box the actual input of this box
ttext_box::set_value(real_value_);
// Restore the selection
set_selection_start(selection_start);
set_selection_length(selection_length);
}
void tpassword_box::handle_key_delete(SDLMod /*modifier*/, bool& handled) {
pre_function();
// Copy & paste from ttext_::handle_key_delete()
DBG_GUI_E << LOG_SCOPE_HEADER << '\n';
handled = true;
if(get_selection_length() != 0) {
delete_selection();
} else if (get_selection_start() < get_text_length(text())) {
delete_char(false);
}
post_function();
}
void tpassword_box::post_function() {
// See above
size_t selection_start = get_selection_start();
size_t selection_length = get_selection_length();
// Get the input back and make ttext_box forget it
real_value_ = get_value();
ttext_box::set_value(std::string(get_text_length(real_value_), '*'));
// See above
set_selection_start(selection_start);
set_selection_length(selection_length);
// Why do the selection functions not update
// the canvas?
update_canvas();
set_dirty(true);
}
void ttext_box::delete_selection()
{
if(get_selection_length() == 0) {
return;
}
// If we have a negative range change it to a positive range.
// This makes the rest of the algoritms easier.
int len = get_selection_length();
unsigned start = get_selection_start();
if(len < 0) {
len = -len;
start -= len;
}
utf8::string tmp = get_value();
set_value(utf8::erase(tmp, start, len));
set_cursor(start, false);
}
