QT 使用自定义输入法

因在Linux中，root环境下无法使用fcitx输入法框架，也就无法使用输入法，这个时候只好使用自己定义的输入法，这样，即使是在root下，也能输入中文。

1 使用插件

1)编译googlepinyin静态库

QT          -= gui
TEMPLATE    = libCONFIG      += staticlib
TARGET      = googlepinyin
win32{CONFIG      += debug_and_release build_allCONFIG(debug, debug|release){TARGET  = ../../plugin/googlepinyin/$$join(TARGET,,,d)}CONFIG(release, debug|release){TARGET  = ../../plugin/googlepinyin/$$TARGET}
}
unix{TARGET      = ../plugin/googlepinyin/$$TARGETMOC_DIR     = ../tmpfilesRCC_DIR     = ../tmpfilesUI_DIR      = ../tmpfilesOBJECTS_DIR = ../tmpfiles
}

编译得到libgooglepinyin.a静态库。

2)编译plugin

将上一步编译获得的libgooglepinyin.a放到plugin项目的googlepinyin目录下，开始编译。

QT          = core gui-private widgetsTEMPLATE    = lib
TARGET      = tgtsmlInputContextPluginINCLUDEPATH += $$PWD/googlepinyinwin32{CONFIG      += debug_and_release build_allCONFIG(debug, debug|release){TARGET  = ../../debug/platformInputContexts/$$join(TARGET,,,d)LIBS    += -L$$PWD/googlepinyin/ -lgooglepinyind}CONFIG(release, debug|release){TARGET  = ../../release/platformInputContexts/$$TARGETLIBS    += -L$$PWD/googlepinyin/ -lgooglepinyin}
}
unix{TARGET      = ../target/$$TARGETLIBS        += -L$$PWD/googlepinyin/ -lgooglepinyinMOC_DIR     = ../tmpfilesRCC_DIR     = ../tmpfilesUI_DIR      = ../tmpfilesOBJECTS_DIR = ../tmpfiles
}

获得插件libtgtsmlInputContextPlugin.so。

3)加载插件

在./dict目录下放置两个dat词典文件；
在.pro中添加相应库；

LIBS += -L./plugins -ltgtsmlInputContextPlugin

widget.h添加成员变量及LoadPlugins()方法；

bool LoadPlugins();TgtsmlPlatformInputContext *m_input_chinese;

widget.cpp

bool NewPatientPage::LoadPlugins()
{QString pluginpath("./plugins/libtgtsmlInputContextPlugin.so");QFile file("./plugins/libtgtsmlInputContextPlugin.so");if (!file.exists()){QMessageBox::warning(this,tr("错误信息"),tr("找不到%1文件").arg(pluginpath));return false;}QPluginLoader loader(pluginpath);QObject *instance = loader.instance(); if (instance!= nullptr){qDebug()<<pluginpath+" is loaded";TgtsmlPlatformInputContextPlugin *avc = qobject_cast<TgtsmlPlatformInputContextPlugin *>(instance);m_input_chinese =  avc->create("tgtsml",QStringList());return true;}else {QMessageBox::information(this,"failed to load Chinese input plugin",loader.errorString());}// 需要手动释放delete instance;return true;
}

4)连接相应的信号与槽

重载QLineEditLineEdit.h

class LineEdit : public QLineEdit
{Q_OBJECT
public:LineEdit(QWidget* parent=nullptr);virtual ~LineEdit()=default;signals:void SendObject(QObject *obj);void showInputPanel();void hideInputPanel();void KeyPress(QKeyEvent *e);protected:virtual void focusInEvent(QFocusEvent*e);virtual void focusOutEvent(QFocusEvent*e);virtual void keyPressEvent(QKeyEvent *e);virtual void mousePressEvent(QMouseEvent*e);
};

LineEdit.cpp

#include "LineEdit.h"
//---------------------------------
LineEdit::LineEdit(QWidget *parent):QLineEdit(parent)
{}
//---------------------------------
void LineEdit::focusInEvent(QFocusEvent *e)
{emit SendObject(this);
//    emit showInputPanel();return QLineEdit::focusInEvent(e);
}void LineEdit::focusOutEvent(QFocusEvent *e)
{emit hideInputPanel();return QLineEdit::focusOutEvent(e);
}//---------------------------------
void LineEdit::keyPressEvent(QKeyEvent *e)
{if(e->key()==Qt::Key_Backspace){if(e->modifiers().testFlag(Qt::NoModifier)){emit KeyPress(e);return;}else if(e->modifiers().testFlag(Qt::ShiftModifier)){return;}else if(e->modifiers().testFlag(Qt::ControlModifier)){QKeyEvent *p= new QKeyEvent(QEvent::KeyPress, Qt::Key_Backspace, Qt::NoModifier);QLineEdit::keyPressEvent(p);return;}}emit KeyPress(e);QLineEdit::keyPressEvent(e);if((e->key()>=Qt::Key_A && e->key()<=Qt::Key_Z) || (e->key()>=Qt::Key_1 && e->key()<=Qt::Key_5) ){QKeyEvent *p= new QKeyEvent(QEvent::KeyPress, Qt::Key_Backspace, Qt::NoModifier);QLineEdit::keyPressEvent(p);}switch (e->key()){case Qt::Key_Comma: case Qt::Key_Period: case Qt::Key_Slash: case Qt::Key_Space:case Qt::Key_Minus : case Qt::Key_Equal:QKeyEvent *p= new QKeyEvent(QEvent::KeyPress, Qt::Key_Backspace, Qt::NoModifier);QLineEdit::keyPressEvent(p);break;}
}
//---------------------------------
void LineEdit::mousePressEvent(QMouseEvent *e)
{emit showInputPanel();return QLineEdit::mousePressEvent(e);
}

widget.cpp

    connect(m_edit["doctor"], SIGNAL(SendObject(QObject*)), m_input_chinese, SLOT(setFocusObject(QObject *)));connect(m_edit["doctor"], SIGNAL(showInputPanel()), m_input_chinese, SLOT(showInputPanel()));connect(m_edit["doctor"], SIGNAL(hideInputPanel()), m_input_chinese, SLOT(hideInputPanel()));connect(m_edit["doctor"], SIGNAL(KeyPress(QKeyEvent *)), m_input_chinese, SLOT(KeyPress(QKeyEvent *)));

5)修改插件

修改KeyboardForm.h

#include "keyboardform.h"
#include <QLabel>
#include <QPushButton>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QFontDatabase>
#include <QFile>
#include <QDebug>
#include <QApplication>
#include <QMouseEvent>
#include "pinyinime.h"#include <iostream>using std::initializer_list;
//using std::pair;
using namespace ime_pinyin;#define chinesecharacters_number    7
const char *keyboard_characters = "qwertyuiopasdfghjklzxcvbnm,.?";
const QString keyboard_symbols[] = {"1", "2", "3", "4", "5", "6", "7", "8", "9", "0","@", "#", "_", "\"", "“", "”", ",", "，", ".", "。",";", "；", ":", "：", "'", "’", "、", "!", "！","~", "～", "+", "-", "*", "/", "=", "÷", "×", "√","`", "?", "^", "&&", "%", "|", "(", ")", "（", "）","[", "]", "【", "】", "{", "}", "<", ">", "《","》", "$", "€", "￡", "￠", "￥", "§", "—", "／", "＼","·", "……", "——", "→", "←", "↑", "↓", "■", "□", "●","○", "『", "』", "「", "」", "★", "☆", "◆", "◇"}; //29*3KeyboardForm::KeyboardForm(QWidget *parent): QWidget(parent)
{character_btns_list.clear();current_mode = InputMode::en;upper_mode = false;m_symbol_page = 0;this->setFixedSize(800,250);int keyboard_btn_width = this->width()/11.5;int keyboard_btn_height = this->height()/5.0;//设置主窗体样式this->setAttribute(Qt::WA_TranslucentBackground);this->setWindowFlags(Qt::Tool | \Qt::FramelessWindowHint | \Qt::WindowStaysOnTopHint | \Qt::WindowDoesNotAcceptFocus);//加载QSS样式表QFile qss(":/styles/res/stylesheet.qss");if(false == qss.open(QFile::ReadOnly))return;this->setStyleSheet(qss.readAll());qss.close();//图标字体int fontId = QFontDatabase::addApplicationFont(":/font/res/FontAwesome.otf");QString fontName = QFontDatabase::applicationFontFamilies(fontId).at(0);QFont btnicofont(fontName);btnicofont.setPixelSize(10);//单行布局QHBoxLayout *hb[6];for(int i=0; i<6; i++){hb[i] = new QHBoxLayout();hb[i]->setMargin(0);i == 1 ? hb[i]->setSpacing(2) : hb[i]->setSpacing(0);}widget_pinyin = new QWidget(this);widget_pinyin->setFixedHeight(keyboard_btn_height);//拼音缓存m_label_pinyin = new QLabel(this);m_label_pinyin->setFixedHeight(keyboard_btn_height*0.4);hb[0]->addWidget(m_label_pinyin);hb[0]->addStretch(1);//汉子缓存for(int i=0; i<chinesecharacters_number; i++){QPushButton *btn = new QPushButton(this);btn->setFixedHeight(keyboard_btn_height*0.6);hb[1]->addWidget(btn);if(i != chinesecharacters_number - 1) hb[1]->addStretch(1);if (i == 0 || i == chinesecharacters_number-1){change_chinese_characters_page_list.append(btn);btn->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);btn->setFont(btnicofont);btn->setText(i == 0 ? QString(QChar(0xf0d9)) : QString(QChar(0xf0da)));btn->setObjectName("hanzichangepage");i == 0 ? \connect(btn, &QPushButton::clicked, this, &KeyboardForm::chineseCharactersUpdatePrevious) :connect(btn, &QPushButton::clicked, this, &KeyboardForm::chineseCharactersUpdateNext);}else{chinese_characters_list.append(btn);btn->setObjectName("hanzicandidates");connect(btn, &QPushButton::clicked, this, &KeyboardForm::chineseCharactersSelected);}}QVBoxLayout *vb_pinyin = new QVBoxLayout(widget_pinyin);vb_pinyin->addLayout(hb[0]);vb_pinyin->addLayout(hb[1]);vb_pinyin->setMargin(0);vb_pinyin->setSpacing(0);widget_keyboard = new QWidget(this);widget_keyboard->setFixedHeight(keyboard_btn_height*4.0);//键盘for(int i=0; i<29; i++){QPushButton *btn = new QPushButton(QChar(keyboard_characters[i]),this);btn->setFixedSize(keyboard_btn_width, keyboard_btn_height);character_btns_list.append(btn);connect(btn, &QPushButton::clicked, this, &KeyboardForm::characterButtonClicked);}//第一排字母:0-9for(int i=0; i<10; i++){hb[2]->addWidget(character_btns_list.at(i));}QPushButton *btn_backspace = new QPushButton(QChar(0xf060));btn_backspace->setFont(btnicofont);btn_backspace->setFixedSize(keyboard_btn_width*1.5, keyboard_btn_height);btn_backspace->setObjectName("function_button");hb[2]->addWidget(btn_backspace);connect(btn_backspace, &QPushButton::clicked, this, &KeyboardForm::btnBackspaceClicked);//第二排字母:10-18hb[3]->addStretch(1);for(int i=10; i<19; i++){hb[3]->addWidget(character_btns_list.at(i));}QPushButton *btn_enter = new QPushButton("Enter");btn_enter->setFixedSize(keyboard_btn_width*1.5, keyboard_btn_height);btn_enter->setObjectName("function_button");hb[3]->addWidget(btn_enter);hb[3]->addStretch(1);connect(btn_enter, &QPushButton::clicked, this, &KeyboardForm::btnEnterClicked);//第三排字母:20-26QPushButton *btn_upper = new QPushButton(QChar(0xf062));btn_upper->setFixedSize(keyboard_btn_width*1.5, keyboard_btn_height);btn_upper->setFont(btnicofont);btn_upper->setObjectName("function_button");hb[4]->addWidget(btn_upper);connect(btn_upper, &QPushButton::clicked, this, &KeyboardForm::btnUpperClicked);for(int i=19; i<29; i++){hb[4]->addWidget(character_btns_list.at(i));}character_btns_list.append(btn_upper);//第四排功能键btn_symbols = new QPushButton(".?123");btn_symbols->setFixedSize(keyboard_btn_width*1.5, keyboard_btn_height);btn_symbols->setObjectName("function_button");hb[5]->addWidget(btn_symbols);connect(btn_symbols, &QPushButton::clicked, this, &KeyboardForm::btnSymbolsClicked);btn_language = new QPushButton(QChar(0xf0ac));btn_language->setFixedSize(keyboard_btn_width, keyboard_btn_height);btn_language->setFont(btnicofont);btn_language->setObjectName("function_button");hb[5]->addWidget(btn_language);connect(btn_language, &QPushButton::clicked, this, &KeyboardForm::btnLanguageClicked);btn_blankspace = new QPushButton("English");btn_blankspace->setFixedHeight(keyboard_btn_height);hb[5]->addWidget(btn_blankspace);character_btns_list.append(btn_blankspace);connect(btn_blankspace, &QPushButton::clicked, this, &KeyboardForm::btnBlankspaceClicked);QPushButton *btn_emoji = new QPushButton(QChar(0xf118));btn_emoji->setFixedSize(keyboard_btn_width, keyboard_btn_height);btn_emoji->setFont(btnicofont);btn_emoji->setObjectName("emoji");hb[5]->addWidget(btn_emoji);connect(btn_emoji, &QPushButton::clicked, this, &KeyboardForm::btnEmojiClicked);QPushButton *btn_hidekeyboard = new QPushButton(QString(QChar(0xf11c)).append(QChar(0xf103)));btn_hidekeyboard->setFixedSize(keyboard_btn_width*1.5, keyboard_btn_height);btn_hidekeyboard->setFont(btnicofont);btn_hidekeyboard->setObjectName("function_button");hb[5]->addWidget(btn_hidekeyboard);connect(btn_hidekeyboard, &QPushButton::clicked, this, &KeyboardForm::hideKeyboard);QVBoxLayout *vb_keyboard = new QVBoxLayout(widget_keyboard);vb_keyboard->setMargin(0);vb_keyboard->setSpacing(0);for(int i=2; i<6; i++){vb_keyboard->addLayout(hb[i]);}QVBoxLayout *vb_system = new QVBoxLayout(this);vb_system->setMargin(0);vb_system->setSpacing(0);vb_system->addStretch(1);vb_system->addWidget(widget_pinyin);vb_system->addWidget(widget_keyboard);widget_pinyin->hide();updateButtonStateOfChineseCharacters();
}void KeyboardForm::updateButtonStateOfChineseCharacters()
{if(m_label_pinyin->text().isEmpty()){m_label_pinyin->setHidden(true);change_chinese_characters_page_list.at(0)->setHidden(true);change_chinese_characters_page_list.at(1)->setHidden(true);}else{m_label_pinyin->setHidden(false);change_chinese_characters_page_list.at(0)->setHidden(false);change_chinese_characters_page_list.at(1)->setHidden(false);}
}void KeyboardForm::chineseCharactersUpdatePrevious()
{searchChineseCharacters(-1);
}void KeyboardForm::chineseCharactersUpdateNext()
{searchChineseCharacters(1);
}void KeyboardForm::chineseCharactersSelected()
{emit sendKeyToFocusItem(((QPushButton*)sender())->text());clearChineseCache();
}void KeyboardForm::btnBackspaceClicked(bool boo)
{if(current_mode != InputMode::zh || m_label_pinyin->text().isEmpty()){if(!boo){emit sendKeyToFocusItem("\x7F");}}else{emit sendKeyToFocusItem("\x01");m_label_pinyin->setText(m_label_pinyin->text().left(m_label_pinyin->text().length()-1));if(m_label_pinyin->text().isEmpty()){clearChineseCache();}else{searchChineseCharacters(0);}}
}void KeyboardForm::btnEnterClicked(bool boo)
{if(current_mode != InputMode::zh || m_label_pinyin->text().isEmpty()){emit sendKeyToFocusItem("\n");}else{emit sendKeyToFocusItem(m_label_pinyin->text());clearChineseCache();}
}void KeyboardForm::btnUpperClicked()
{if(current_mode == InputMode::en){upper_mode = !upper_mode;}else if(current_mode == InputMode::zh){if(!m_label_pinyin->text().isEmpty() && m_label_pinyin->text().right(1).compare("'")){m_label_pinyin->setText(m_label_pinyin->text().append("'"));}}else{if(m_symbol_page == 0){m_symbol_page = 1;character_btns_list.at(character_btns_list.length()-2)->setText("2/3");}else if(m_symbol_page == 1){m_symbol_page = 2;character_btns_list.at(character_btns_list.length()-2)->setText("3/3");}else{m_symbol_page = 0;character_btns_list.at(character_btns_list.length()-2)->setText("1/3");}}updateKeyboard();
}void KeyboardForm::btnSymbolsClicked()
{if(current_mode != InputMode::symb){widget_pinyin->setHidden(true);if(current_mode == InputMode::en){character_btns_list.at(character_btns_list.length()-1)->setText("Symbols");}else if(current_mode == InputMode::zh){character_btns_list.at(character_btns_list.length()-1)->setText("符号");}((QPushButton*)sender())->setText("abc");last_mode = current_mode;current_mode = InputMode::symb;character_btns_list.at(character_btns_list.length()-2)->setText("1/3");}else{((QPushButton*)sender())->setText(".?123");current_mode = last_mode;m_symbol_page = 0;}upper_mode = false;updateKeyboard();
}void KeyboardForm::btnLanguageClicked()
{upper_mode = false;if(current_mode == InputMode::zh){current_mode = InputMode::en;}else if(current_mode == InputMode::en){current_mode = InputMode::zh;}if(current_mode != InputMode::symb){last_mode = current_mode;updateKeyboard();}
}void KeyboardForm::clearChineseCache()
{m_label_pinyin->setText("");for(int i=0; i<chinese_characters_list.length(); i++){chinese_characters_list.at(i)->setText("");}updateButtonStateOfChineseCharacters();
}void KeyboardForm::KeyPress(QKeyEvent *e)
{//    QMap<QString,int> map{{"1",2}};
//    initializer_list<QString> ini={"a","b","c","d","e","f","g","h","i","j","k","l","m",
//        "n","o","p","q","r","s","t","u","v","w","x","y","z"};
//    QVector<QString> vec(ini);initializer_list<int> init={10, 23, 21, 12, 2, 13, 14, 15, 7,16, 17, 18, 25, 24, 8, 9, 0, 3, 11, 4, 6, 22, 1, 20, 5, 19};QVector<int> vect(init);switch(e->key()){case Qt::Key_Backspace:btnBackspaceClicked(true);break;case Qt::Key_Space:btnBlankspaceClicked();break;case Qt::Key_Return:btnEnterClicked(true);break;case Qt::Key_CapsLock:btnUpperClicked();break;case Qt::Key_Control:emit btn_symbols->clicked();break;case Qt::Key_Alt:emit btn_language->clicked();break;case Qt::Key_Comma:     //,emit character_btns_list.at(character_btns_list.length()-5)->clicked();break;case Qt::Key_Period:    //.emit character_btns_list.at(character_btns_list.length()-4)->clicked();break;case Qt::Key_Slash:     //?emit character_btns_list.at(character_btns_list.length()-3)->clicked();break;default:if(e->key()>=Qt::Key_A && e->key()<=Qt::Key_Z){emit (character_btns_list.at(vect[e->key()-65]))->clicked();}else if(e->key()>=Qt::Key_1 && e->key()<=Qt::Key_5){if(current_mode == InputMode::zh && !m_label_pinyin->text().isEmpty()){emit sendKeyToFocusItem(chinese_characters_list.at(e->key()-49)->text());clearChineseCache();}else{emit sendKeyToFocusItem(QString("%1").arg(e->key()-48));}}break;}
}void KeyboardForm::hideKeyboard()
{clearChineseCache();this->hide();
}void KeyboardForm::updateKeyboard()
{if(current_mode != InputMode::zh){clearChineseCache();}if(current_mode == InputMode::symb){character_btns_list.at(character_btns_list.length()-2)->setCheckable(false);for(int i=0; i<29; i++){character_btns_list.at(i)->setText(keyboard_symbols[i + m_symbol_page*29]);}}else{if(true == upper_mode && current_mode == InputMode::en){character_btns_list.at(character_btns_list.length()-2)->setCheckable(true);character_btns_list.at(character_btns_list.length()-2)->setChecked(true);for(int i=0; i<26; i++){character_btns_list.at(i)->setText(QChar(keyboard_characters[i]).toUpper());}}else{character_btns_list.at(character_btns_list.length()-2)->setChecked(false);for(int i=0; i<26; i++){character_btns_list.at(i)->setText(QChar(keyboard_characters[i]));}}if(current_mode == InputMode::en){widget_pinyin->setHidden(true);character_btns_list.at(character_btns_list.length()-5)->setText(",");character_btns_list.at(character_btns_list.length()-4)->setText(".");character_btns_list.at(character_btns_list.length()-3)->setText("?");character_btns_list.at(character_btns_list.length()-2)->setText(QChar(0xf062));character_btns_list.at(character_btns_list.length()-1)->setText("English");}else if(current_mode == InputMode::zh){character_btns_list.at(character_btns_list.length()-2)->setCheckable(false);widget_pinyin->setHidden(false);character_btns_list.at(character_btns_list.length()-5)->setText("，");character_btns_list.at(character_btns_list.length()-4)->setText("。");character_btns_list.at(character_btns_list.length()-3)->setText("？");character_btns_list.at(character_btns_list.length()-2)->setText("分词");character_btns_list.at(character_btns_list.length()-1)->setText("拼音");}}
}void KeyboardForm::btnBlankspaceClicked(bool boo)
{if(current_mode != InputMode::zh || m_label_pinyin->text().isEmpty()){emit sendKeyToFocusItem(" ");}else{emit sendKeyToFocusItem(chinese_characters_list.at(0)->text());clearChineseCache();}
}void KeyboardForm::btnEmojiClicked()
{emit sendKeyToFocusItem(":)");
}void KeyboardForm::characterButtonClicked()
{if(current_mode == InputMode::zh){if(((QPushButton*)sender())->text() == "，" || ((QPushButton*)sender())->text() == "。" || ((QPushButton*)sender())->text() == "？"){emit sendKeyToFocusItem(((QPushButton*)sender())->text());}else{if(m_label_pinyin->text().length()<15){m_label_pinyin->setText(m_label_pinyin->text().append(((QPushButton*)sender())->text()));searchChineseCharacters(0);updateButtonStateOfChineseCharacters();}}}else{emit sendKeyToFocusItem(((QPushButton*)sender())->text());}
}void KeyboardForm::searchChineseCharacters(const int &currentpage)
{const int max_spelling_length = 32;const int max_decoded_length = 32;const int max_single_hanzi = 20;static unsigned int page_change_times = 0;QString app_dir(qApp->applicationDirPath()+"/dict");im_open_decoder(QString("./dict/dict_pinyin.dat")/*.arg(app_dir)*/.toLocal8Bit().data(),QString("./dict/dict_pinyin_user.dat")/*.arg(app_dir)*/.toLocal8Bit().data());
//    im_open_decoder(QString("/home/robot/01-Wzy-Workspace/07_Work/02_Hip_Replace/QT/Hip_Replacement_6/dict/dict_pinyin.dat").toLocal8Bit().data(),
//                    QString("/home/robot/01-Wzy-Workspace/07_Work/02_Hip_Replace/QT/Hip_Replacement_6/dict/dict_pinyin_user.dat").toLocal8Bit().data());im_set_max_lens(max_spelling_length, max_decoded_length);im_reset_search();QByteArray bytearray(m_label_pinyin->text().toUtf8());char *pinyin(bytearray.data());size_t cand_num = im_search(pinyin, bytearray.size());size_t decode_len;im_get_sps_str(&decode_len);if (decode_len == 1){if (cand_num > 10) cand_num = 10;}else{size_t single = 0;size_t multi = 0;char16 *cand_buf = new char16[max_decoded_length];for(size_t i = 0; i < cand_num; i++){im_get_candidate(i, cand_buf, max_decoded_length);if (strlen((char *)cand_buf) > 2){multi++;}else{single++;if (single > max_single_hanzi) break;}}cand_num = multi + single;delete cand_buf;}switch(currentpage){case 1:if(cand_num > chinese_characters_list.length() && page_change_times < cand_num - chinese_characters_list.length())page_change_times++;break;case -1:if(page_change_times > 0) page_change_times--;break;default:page_change_times = 0;break;}if(0 == page_change_times)change_chinese_characters_page_list.at(0)->setEnabled(false);elsechange_chinese_characters_page_list.at(0)->setEnabled(true);if(page_change_times == cand_num - chinese_characters_list.length())change_chinese_characters_page_list.at(1)->setEnabled(false);elsechange_chinese_characters_page_list.at(1)->setEnabled(true);char16 *cand_buf = new char16[max_decoded_length];char16 *cand;QString cand_str;for (unsigned i = 0; i < cand_num; i++){cand = im_get_candidate(i, cand_buf, max_decoded_length);if (cand){cand_str = QString::fromUtf16(cand);if (i == 0) cand_str.remove(0, im_get_fixed_len());}else{cand_str = "";}int tmpindex = i - page_change_times;if(tmpindex >= 0 && tmpindex < chinese_characters_list.length()){switch(currentpage){case 1:chinese_characters_list.at(tmpindex)->setText(cand_str);break;case -1:chinese_characters_list.at(tmpindex)->setText(cand_str);break;default:chinese_characters_list.at(tmpindex)->setText(cand_str);break;}}}delete cand_buf;
}

修改TgtsmlPlatformInputContext.cpp

#include "tgtsmlplatforminputcontext.h"
#include <QCoreApplication>
#include <QKeyEvent>
#include <QApplication>
#include <QDesktopWidget>TgtsmlPlatformInputContext::TgtsmlPlatformInputContext()
{m_focusitem = nullptr;m_keyboard = nullptr;
}TgtsmlPlatformInputContext::~TgtsmlPlatformInputContext()
{disconnect(m_keyboard, &KeyboardForm::sendKeyToFocusItem, this, &TgtsmlPlatformInputContext::sendKeyToFocusItem);if(m_keyboard) delete m_keyboard;
}void TgtsmlPlatformInputContext::sendKeyToFocusItem(const QString &keytext)
{if(!m_focusitem)return;if(keytext == QString("\x7F"))     //Backspace <--{QCoreApplication::sendEvent(m_focusitem, new QKeyEvent(QEvent::KeyPress, Qt::Key_Backspace, Qt::ControlModifier));QCoreApplication::sendEvent(m_focusitem, new QKeyEvent(QEvent::KeyRelease, Qt::Key_Backspace, Qt::NoModifier));}else if(keytext == QString("\x01"))     //Backspace <--{QCoreApplication::sendEvent(m_focusitem, new QKeyEvent(QEvent::KeyPress, Qt::Key_Backspace, Qt::ShiftModifier));QCoreApplication::sendEvent(m_focusitem, new QKeyEvent(QEvent::KeyRelease, Qt::Key_Backspace, Qt::NoModifier));}else{QCoreApplication::sendEvent(m_focusitem, new QKeyEvent(QEvent::KeyPress, 0, Qt::NoModifier, keytext));QCoreApplication::sendEvent(m_focusitem, new QKeyEvent(QEvent::KeyRelease, 0, Qt::NoModifier, keytext));}
}bool TgtsmlPlatformInputContext::isValid() const
{return true;
}void TgtsmlPlatformInputContext::setFocusObject(QObject *object)
{m_focusitem = object;
}void TgtsmlPlatformInputContext::showInputPanel()
{if(!m_keyboard){m_keyboard = new KeyboardForm;connect(m_keyboard, &KeyboardForm::sendKeyToFocusItem, this, &TgtsmlPlatformInputContext::sendKeyToFocusItem);}if(m_keyboard->isHidden())m_keyboard->show();QWidget *widgetTmp = qobject_cast<QWidget*>(m_focusitem);if(widgetTmp){QPoint widgetGlobalPos = widgetTmp->mapToGlobal(QPoint(0, 0));int height=widgetTmp->height();if(widgetGlobalPos.x() < 0){widgetGlobalPos.setX(0);}if(widgetGlobalPos.y() < 0){widgetGlobalPos.setY(0);}if(qApp->desktop()->width() - widgetGlobalPos.x() < m_keyboard->width()){widgetGlobalPos.setX(qApp->desktop()->width() - m_keyboard->width());}if(qApp->desktop()->height() - widgetGlobalPos.y() - 30 < m_keyboard->height()){widgetGlobalPos.setY(widgetGlobalPos.y() - m_keyboard->height() - 10);}else{widgetGlobalPos = widgetGlobalPos + QPoint(0,height);}m_keyboard->move(widgetGlobalPos);}
}void TgtsmlPlatformInputContext::hideInputPanel()
{if(!m_keyboard){return;}if(!m_keyboard->isHidden()){m_keyboard->hide();}m_keyboard->clearChineseCache();
}bool TgtsmlPlatformInputContext::isInputPanelVisible() const
{return m_keyboard->isVisible();
}void TgtsmlPlatformInputContext::KeyPress(QKeyEvent *e)
{m_keyboard->KeyPress(e);
}

修改TgtsmlPlatformInputContextPlugin.cpp

#include "tgtsmlplatforminputcontextplugin.h"TgtsmlPlatformInputContext * TgtsmlPlatformInputContextPlugin::create(const QString &key, const QStringList &paramlist)
{Q_UNUSED(paramlist)if(key.compare("tgtsml",Qt::CaseInsensitive) == 0){return new TgtsmlPlatformInputContext;}return nullptr;
}

2 输入法插件

插件是博主tgtsml写的：Qt5输入法实现
github地址：tgtsml/QtInputMethod_GooglePinyin