由于项目需要用到QT软键盘,本来PC上QT用的5.4.1版本,但不支持QInputContext。所以用了和开发板一样的4.8.5.
1.简单的数字软件盘
在QtEmbedded-4.8.5-arm/examples/tools/inputpanel下面有例子,下面说一下修改;
1).增加退格键,因为键值问题,需要使用quint32,才能生效,把下面的改一下就好;
myinputpanel.cpp
form.panelButton_backspace->setProperty("buttonValue", QVariant(quint32(Qt::Key_Backspace))); //设置退格键
void MyInputPanel::buttonClicked(QWidget *w)
{
quint32 chr = qvariant_cast(w->property("buttonValue"));
emit characterGenerated(chr);
}
myinputpanelcontext.cpp
connect(inputPanel, SIGNAL(characterGenerated(quint32)), this,SLOT(sendCharacter(quint32)));
void MyInputPanelContext::sendCharacter(quint32 character)
{
QPointer w = focusWidget();
if (!w)
return;
QKeyEvent keyPress(QEvent::KeyPress,(quint32) character, Qt::NoModifier, QString(character));
QApplication::sendEvent(w, &keyPress);
if (!w)
return;
QKeyEvent keyRelease(QEvent::KeyRelease,(quint32)character, Qt::NoModifier, QString()); //character.unicode()
QApplication::sendEvent(w, &keyRelease);
}
注意把第二次KeyPress,改为KeyRelease,否则退格键会触发2次
2).鼠标单击弹出软件盘
在myinputpanelcontext.h中增加
class MyProxyStyle : public QProxyStyle
{
public:
int styleHint(StyleHint hint, const QStyleOption *option = 0, const QWidget *widget = 0, QStyleHintReturn *returnData = 0) const
{
if ( hint == QStyle::SH_RequestSoftwareInputPanel )
return QStyle::RSIP_OnMouseClick;
return QProxyStyle::styleHint(hint, option, widget, returnData);
}
};
在main函数中增加
a.setStyle(new MyProxyStyle);
好了,到这儿我们就拥有一个简单的能输入数字的软键盘
2.SYSZUXpinyin需要修改的地方(移植过程不再赘述)
1)乱码
可以将编码设置为GB2312,或者将字库转码(SYSZUXpinyin/syszux/)
iconv -f gb2312 -t utf-8 syszuxpinyin> syszuxpinyin.tmp
vi一下看syszuxpinyin.tmp中文是否正常,然后覆盖掉原来的
在main函数中加入:
QTextCodec *codec = QTextCodec::codecForName("UTF-8"); //“UTF-8GB2312”
QTextCodec::setCodecForLocale(codec);
// QTextCodec::setCodecForCStrings(codec);
QTextCodec::setCodecForTr(codec);
// QFont font("unifont",6);
//a.setFont(font);
注意不要设CStrings,否则输入法打出来的字乱码(原因自行百度)
2)清除上次输入的内容
syszuxpinyin.cpp 中发送完信号,把输入法的lineEdit清了
229 void SyszuxPinyin::affirmString()
230 {
231 emit sendPinyin(lineEdit_window->text());
232 lineEdit_window->clear(); //add
233 this->hide();
234 }
3)获取当前控件中的内容(同时支持QSpinBox等控件)
这个是网友做的,他添加了多种控件,让后通过QApplication::focusWidget();来获取当前焦点控件,使用各控件的方法来获取/设置内容(见源码)
4)多次点击同一控件能连续触发输入法(不切换焦点) (见源码)
网上有重载lineEdit的方法,但支持一种控件,多种不同类型的控件难道都去加一套?
我的想法比较简单,就是输入完内容把当前焦点clearFocus(),这样再次点击就会获取焦点,并调出输入法。
还有一种想法是虚拟出一个控件,输入完内容setFocus(),
由于 QWSServer是专门针对嵌入式的(度娘),所以测试完赶紧先把输入法移了吧
syszuxim.h
#ifndef SYSZUXIM_H
#define SYSZUXIM_H
#include
#include
class SyszuxPinyin;
class SyszuxIM:public QWSInputMethod
{
Q_OBJECT
public:
SyszuxIM();
~SyszuxIM();
void updateHandler(int);
QLineEdit *le;
QSpinBox *sb;
QDoubleSpinBox *dsb;
QTextEdit *tee;
QComboBox *cb;
QTimeEdit *tie;
QDateEdit *de;
QDateTimeEdit *dte;
enum WidgetType{LINEEDIT,SPINBOX,DOUBLESPINBOX,TEXTEDIT,COMBOBOX,TIMEEDIT,DATEEDIT,DATETIMEEDIT};
WidgetType type;
public slots:
void confirmString(QString gemfield);
private:
SyszuxPinyin* syszuxpinyin;
QWidget *current_focus_widget;
void focusin();
};
#endif
syszuxim.cpp
#include "syszuxim.h"
#include "syszuxpinyin.h"
SyszuxIM::SyszuxIM()
{
le = new QLineEdit; //added by me
sb = new QSpinBox;
dsb = new QDoubleSpinBox;
tee = new QTextEdit;
cb = new QComboBox;
tie = new QTimeEdit;
de = new QDateEdit;
dte = new QDateTimeEdit;
syszuxpinyin = new SyszuxPinyin(this);
current_focus_widget=new QWidget;
current_focus_widget = QApplication::focusWidget();
syszuxpinyin->resize(800,480);
}
SyszuxIM::~SyszuxIM()
{
syszuxpinyin->deleteLater();
}
void SyszuxIM::confirmString(QString gemfield)
{
if(type == LINEEDIT)
{
le->setText(gemfield);
le->clearFocus();
}
else if(type == SPINBOX)
{
sb->setValue(gemfield.toInt());
sb->clearFocus();
}
else if(type == DOUBLESPINBOX)
{
dsb->setValue(gemfield.toFloat());
dsb->clearFocus();
}
else if(type == TEXTEDIT)
{
tee->setText(gemfield);
tee->clearFocus();
}
else if(type == COMBOBOX)
{
if(gemfield.isEmpty())
{
sendCommitString(gemfield);
cb->clearFocus();
}
else
{
cb->setEditText(gemfield);//可能有问题
cb->clearFocus();
}
}
else
{
sendCommitString(gemfield);
}
}
void SyszuxIM::updateHandler(int type)
{
switch(type)
{
case QWSInputMethod::FocusIn:
focusin();
break;
case QWSInputMethod::FocusOut:
syszuxpinyin->hide();
break;
default:
break;
}
}
void SyszuxIM::focusin()
{
QString str;
current_focus_widget = QApplication::focusWidget();
if(qobject_cast(current_focus_widget))
{
type = LINEEDIT;
le= qobject_cast(current_focus_widget);
str = le->text();
}
else if(qobject_cast(current_focus_widget))
{
type = SPINBOX;
sb = qobject_cast(current_focus_widget);
str = tr("%1").arg(sb->value());
}
else if(qobject_cast(current_focus_widget))
{
type = DOUBLESPINBOX;
dsb = qobject_cast(current_focus_widget);
str = tr("%1").arg(dsb->value());
}
else if(qobject_cast(current_focus_widget))
{
type = TEXTEDIT;
tee = qobject_cast(current_focus_widget);
str = tee->toPlainText();
}
else if(qobject_cast(current_focus_widget))
{
type = COMBOBOX;
cb = qobject_cast(current_focus_widget);
str = cb->currentText();
str = "";
}
else
str = "";
syszuxpinyin->show();
syszuxpinyin->lineEdit_window->setText(str);
}