Add Keyboard.

src/keyboard/KeyButton.cpp

@@ -0,0 +1,28 @@
+#include "KeyButton.h"
+
+KeyButton::KeyButton(QWidget *aParent)
+    : QPushButton(aParent)
+{
+    /*支持长按*/
+    setAutoRepeat(true);
+    setAutoRepeatDelay(500);
+    setAutoRepeatInterval(100);
+
+    connect(this,&QPushButton::pressed,this,&KeyButton::emitKeyButtonPressed);
+}
+
+void KeyButton::setValue(const QString& aValue)
+{
+    mValue = aValue;
+    setText(mValue);
+}
+
+void KeyButton::setKey(int aKey)
+{
+    mKey = aKey;
+}
+
+void KeyButton::emitKeyButtonPressed()
+{
+    emit keyButtonPressed(mKey,mValue);
+}