void QinPinyin::update_preedit_string(const IPreeditString& preedit)
{
const int len = preedit.size();
if (len > 0) {
preeditStr = TWCHAR2str(preedit.string(), preedit.size());
} else {
preeditStr.clear();
}
}
void decorate_preedit_string_using_caret_pos(IBusText *text, const IPreeditString& preedit, int caret)
{
if (caret < preedit.size()) {
// add underline, otherwise gtk app won't have the same color scheme with that of x11 apps
ibus_text_append_attribute(text, IBUS_ATTR_TYPE_UNDERLINE, IBUS_ATTR_UNDERLINE_SINGLE,
caret, preedit.size());
ibus_text_append_attribute(text, IBUS_ATTR_TYPE_FOREGROUND, WHITE,
caret, preedit.size());
ibus_text_append_attribute(text, IBUS_ATTR_TYPE_BACKGROUND, GRAY_BLUE,
caret, preedit.size());
}
}
void
SunPinyinEngine::update_preedit_string(const IPreeditString& preedit)
{
const int len = preedit.size();
if (len > 0) {
IBusText *text = ibus_text_new_from_ucs4((const gunichar*) preedit.string());
const int caret = preedit.caret();
if (caret < len) {
decorate_preedit_string_using_caret_pos(text, preedit, caret);
} else {
decorate_preedit_string_using_char_type(text, preedit);
}
ibus_engine_update_preedit_text(m_engine, text, caret, TRUE);
} else {
ibus_engine_hide_preedit_text(m_engine);
}
}