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Add source code of the XiPC emulator

Pawel Jablonski authored on 17/03/2023 16:46:08
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emu/src/keyboard.cpp
History View file @ cc3413a
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+/*
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+ * Author: Pawel Jablonski
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+ * E-mail: pj@xirx.net
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+ * WWW: xirx.net
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+ * GIT: git.xirx.net
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+ *
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+ * License: You can use this code however you like
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+ * but leave information about the original author.
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+ * Code is free for non-commercial and commercial use.
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+ */
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+
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+#include "keyboard.h"
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+
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+/**
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+ * Constructor for the keyboard class
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+ *
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+ * @param parent Parent object
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+ */
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+Keyboard::Keyboard(QObject *parent) : QObject(parent)
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+{
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+	this->reset();
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+}
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+
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+//! Reset the keyboard buffer
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+void Keyboard::reset()
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+{
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+	this->buffer.clear();
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+}
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+
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+/**
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+ * Process a key press event
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+ *
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+ * @param key Pressed key code
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+ * @param modifiers Optional modifiers to pressed key
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+ */
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+void Keyboard::keyPress(int key, Qt::KeyboardModifiers modifiers)
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+{
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+	if((key <= MAX_CODE) && (key >= MIN_CODE))
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+	{
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+		unsigned char keyCode = static_cast<unsigned char>(key);
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+
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+		if((key >= 'A') && (key <= 'Z'))
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+		{
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+			if(!(modifiers & Qt::ShiftModifier))
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+			{
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+				keyCode += ('a' - 'A');
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+			}
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+		}
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+
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+		if(modifiers & Qt::ControlModifier)
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+		{
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+			keyCode |= CTRL_MASK;
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+		}
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+
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+		this->buffer.append(keyCode);
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+	}
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+	else
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+	{
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+		switch(key)
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+		{
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+			case Qt::Key_Escape :
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+				this->buffer.append(KEY_ESC);
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+				break;
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+
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+			case Qt::Key_Backspace :
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+				this->buffer.append(KEY_BACKSPACE);
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+				break;
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+
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+			case Qt::Key_Tab :
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+				this->buffer.append(KEY_TAB);
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+				break;
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+
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+			case Qt::Key_Return :
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+				this->buffer.append(KEY_ENTER);
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+				break;
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+
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+			case Qt::Key_Delete :
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+				this->buffer.append(KEY_DELETE);
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+				break;
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+
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+			case Qt::Key_Up :
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+				this->buffer.append(KEY_UP);
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+				break;
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+
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+			case Qt::Key_Down :
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+				this->buffer.append(KEY_DOWN);
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+				break;
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+
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+			case Qt::Key_Left :
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+				this->buffer.append(KEY_LEFT);
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+				break;
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+
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+			case Qt::Key_Right :
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+				this->buffer.append(KEY_RIGHT);
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+				break;
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+		}
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+	}
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+
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+	if(this->buffer.length() > 0)
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+	{
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+		emit dataReadySignal(true);
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+	}
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+}
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+
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+/**
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+ * Read next a char from input buffer
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+ *
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+ * @return Next char from the input buffer
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+ */
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+unsigned char Keyboard::getKey()
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+{
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+	if(this->buffer.length() > 0)
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+	{
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+		unsigned char key = this->buffer.takeFirst();
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+
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+		if(this->buffer.length() == 0)
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+		{
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+			emit dataReadySignal(false);
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+		}
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+
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+		return(key);
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+	}
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+
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+	emit dataReadySignal(false);
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+
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+	return(0);
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+}