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qinputcontexthangul.cpp
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qinputcontexthangul.cpp
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/* qimhangul - Qt input module for hangul
* Copyright (C) 2004 Choe Hwanjin
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <ctype.h>
#include <QDebug>
#include <QInputMethodEvent>
#include <QTextFormat>
#include <QWidget>
#include <QWindow>
#include <QRect>
#include <QCoreApplication>
#include <QGuiApplication>
#include <hangul.h>
#include "qinputcontexthangul.h"
HanjaTable* QInputContextHangul::hanjaTable = NULL;
QInputContextHangul::QInputContextHangul(const QStringList& paramList) :
m_candidateList(NULL),
m_mode(MODE_DIRECT),
m_focusObject(nullptr)
{
QString keyboard;
if (paramList.isEmpty()) {
keyboard = "2";
} else {
keyboard = paramList.front();
}
m_hic = hangul_ic_new(keyboard.toUtf8());
}
QInputContextHangul::~QInputContextHangul()
{
delete m_candidateList;
if (m_hic != NULL)
hangul_ic_delete(m_hic);
}
bool
QInputContextHangul::isValid() const
{
return true;
}
/**
* @brief 현재 조합중인 한글을 취소하고 없애는 함수
*/
void QInputContextHangul::reset()
{
// qDebug() << "QInputContextHangul::reset";
if (m_candidateList != NULL && m_candidateList->isVisible()) {
m_candidateList->close();
}
hangul_ic_reset(m_hic);
QInputMethodEvent e;
sendEvent(m_focusObject, &e);
}
/**
* @brief 현재 조합중인 한글을 완성하여 commit해 주는 함수
*/
void
QInputContextHangul::commit()
{
//qDebug() << "QInputContextHangul::commit";
if (m_candidateList != NULL && m_candidateList->isVisible()) {
m_candidateList->close();
}
if (m_focusObject == nullptr) {
return;
}
const ucschar *flushed = hangul_ic_flush(m_hic);
QString commitString = QString::fromUcs4(flushed);
if (commitString.isEmpty()) {
return;
}
// flush된 후이므로 preedit string이 없다.
QInputMethodEvent e;
e.setCommitString(commitString);
sendEvent(m_focusObject, &e);
}
QString QInputContextHangul::getPreeditString() const
{
const ucschar* str = hangul_ic_get_preedit_string(m_hic);
return QString::fromUcs4(str);
}
QList<QInputMethodEvent::Attribute>
QInputContextHangul::getPreeditAttrs(const QString& preeditString)
{
QList<QInputMethodEvent::Attribute> attrs;
if (m_focusObject == nullptr) {
return attrs;
}
QWidget* widget = qobject_cast<QWidget*>(m_focusObject);
if (widget == NULL) {
return attrs;
}
const QPalette& palette = widget->palette();
QTextCharFormat format;
format.setBackground(palette.color(QPalette::Text));
format.setForeground(palette.color(QPalette::Window));
attrs += QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat,
0, preeditString.length(), format);
return attrs;
}
QString QInputContextHangul::getCommitString() const
{
const ucschar* str = hangul_ic_get_commit_string(m_hic);
return QString::fromUcs4(str);
}
void QInputContextHangul::commit(const QString &str)
{
if (m_focusObject == nullptr) {
return;
}
QInputMethodEvent e;
e.setCommitString(str);
sendEvent(m_focusObject, &e);
}
bool QInputContextHangul::isTriggerKey(const QKeyEvent *event)
{
return (event->key() == Qt::Key_Space && (event->modifiers() & Qt::ShiftModifier) == Qt::ShiftModifier) ||
(event->key() == Qt::Key_Hangul);
}
bool QInputContextHangul::isCandidateKey(const QKeyEvent *event)
{
return (event->key() == Qt::Key_Hangul_Hanja) ||
(event->key() == Qt::Key_F9);
}
bool
QInputContextHangul::processBackspace()
{
bool ret = hangul_ic_backspace(m_hic);
if (ret) {
QString preeditString = getPreeditString();
QList<QInputMethodEvent::Attribute> attrs = getPreeditAttrs(preeditString);
QInputMethodEvent e(preeditString, attrs);
sendEvent(m_focusObject, &e);
}
return ret;
}
bool QInputContextHangul::popupCandidateList()
{
const ucschar *text = hangul_ic_get_preedit_string(m_hic);
if (text != NULL && *text != 0) {
QString str;
str += QChar(text[0]);
HanjaList *list = hanja_table_match_suffix(hanjaTable, str.toUtf8());
if (m_candidateList == NULL)
m_candidateList = new CandidateList();
QPoint p(0, 0);
QWidget* focusWidget = m_focusObject ? qobject_cast<QWidget*>(m_focusObject) : nullptr;
if (focusWidget != NULL) {
QWidget* focusWindow = focusWidget->window();
QRect cursorRect = qGuiApp->inputMethod()->cursorRectangle().toRect();
p = focusWindow->mapToGlobal(cursorRect.bottomRight());
}
m_candidateList->open(list, p.x(), p.y());
}
return false;
}
bool QInputContextHangul::filterEvent(const QEvent *event)
{
if (event->type() != QEvent::KeyPress)
return false;
const QKeyEvent *keyevent = static_cast<const QKeyEvent*>(event);
if (m_candidateList != NULL && m_candidateList->isVisible()) {
if (m_candidateList->filterEvent(keyevent)) {
if (m_candidateList->isSelected()) {
hangul_ic_reset(m_hic);
QString candidate(m_candidateList->getCandidate());
commit(candidate);
}
m_candidateList->close();
}
return true;
}
if (keyevent->key() == Qt::Key_Shift)
return false;
if (keyevent->key() == Qt::Key_Backspace)
return processBackspace();
if (isTriggerKey(keyevent)) {
if (m_mode == MODE_DIRECT) {
m_mode = MODE_HANGUL;
} else {
commit();
m_mode = MODE_DIRECT;
}
setModeInfo(m_mode);
return true;
}
if (isCandidateKey(keyevent)) {
return popupCandidateList();
}
if (keyevent->modifiers() & Qt::ControlModifier ||
keyevent->modifiers() & Qt::AltModifier ||
keyevent->modifiers() & Qt::MetaModifier) {
commit();
return false;
}
if (m_mode == MODE_HANGUL) {
QString text = keyevent->text();
if (keyevent->modifiers() & Qt::ShiftModifier)
text = text.toUpper();
else
text = text.toLower();
int ascii = 0;
if (!text.isEmpty())
ascii = text[0].unicode();
bool ret = hangul_ic_process(m_hic, ascii);
QString preeditString = getPreeditString();
QList<QInputMethodEvent::Attribute> attrs = getPreeditAttrs(preeditString);
QInputMethodEvent e(preeditString, attrs);
QString commitString = getCommitString();
if (!commitString.isEmpty())
e.setCommitString(commitString);
sendEvent(m_focusObject, &e);
return ret;
}
return false;
}
void
QInputContextHangul::setFocusObject(QObject* object)
{
m_focusObject = object;
if (m_focusObject == nullptr) {
setModeInfo(MODE_NONE);
} else {
setModeInfo(m_mode);
}
QPlatformInputContext::setFocusObject(object);
}
void
QInputContextHangul::sendEvent(QObject* object, QInputMethodEvent* event)
{
if (object == nullptr) {
return;
}
QCoreApplication::sendEvent(m_focusObject, event);
}