Imported /gui/ from mercurial.

gui/src/KeySequenceWidget.cpp

@@ -0,0 +1,126 @@
+#include "KeySequenceWidget.h"
+
+#include <iostream>
+
+KeySequenceWidget::KeySequenceWidget(QWidget* parent, const KeySequence& seq) :
+	QPushButton(parent),
+	m_KeySequence(seq),
+	m_BackupSequence(seq),
+	m_Status(Stopped),
+	m_MousePrefix("mousebutton("),
+	m_MousePostfix(")"),
+	m_KeyPrefix("keystroke("),
+	m_KeyPostfix(")")
+{
+	setFocusPolicy(Qt::NoFocus);
+	updateOutput();
+}
+
+void KeySequenceWidget::setKeySequence(const KeySequence& seq)
+{
+	keySequence() = seq;
+	backupSequence() = seq;
+
+	setStatus(Stopped);
+	updateOutput();
+}
+
+void KeySequenceWidget::mousePressEvent(QMouseEvent* event)
+{
+	event->accept();
+
+	if (status() == Stopped)
+	{
+		startRecording();
+		return;
+	}
+
+	if (m_KeySequence.appendMouseButton(event->button()))
+		stopRecording();
+
+	updateOutput();
+}
+
+void KeySequenceWidget::startRecording()
+{
+	keySequence() = KeySequence();
+	setDown(true);
+	setFocus();
+	grabKeyboard();
+	setStatus(Recording);
+}
+
+void KeySequenceWidget::stopRecording()
+{
+	if (!keySequence().valid())
+	{
+		keySequence() = backupSequence();
+		updateOutput();
+	}
+
+	setDown(false);
+	focusNextChild();
+	releaseKeyboard();
+	setStatus(Stopped);
+	emit keySequenceChanged();
+}
+
+bool KeySequenceWidget::event(QEvent* event)
+{
+	if (status() == Recording)
+	{
+		switch(event->type())
+		{
+			case QEvent::KeyPress:
+				keyPressEvent(static_cast<QKeyEvent*>(event));
+				return true;
+
+			case QEvent::MouseButtonRelease:
+				event->accept();
+				return true;
+
+			case QEvent::ShortcutOverride:
+				event->accept();
+				return true;
+
+			case QEvent::FocusOut:
+				stopRecording();
+				if (!valid())
+				{
+					keySequence() = backupSequence();
+					updateOutput();
+				}
+				break;
+
+			default:
+				break;
+		}
+	}
+
+	return QPushButton::event(event);
+}
+
+void KeySequenceWidget::keyPressEvent(QKeyEvent* event)
+{
+	event->accept();
+
+	if (status() == Stopped)
+		return;
+
+	if (m_KeySequence.appendKey(event->key(), event->modifiers()))
+		stopRecording();
+
+	updateOutput();
+}
+
+void KeySequenceWidget::updateOutput()
+{
+	QString s;
+
+	if (m_KeySequence.isMouseButton())
+		s = mousePrefix() + m_KeySequence.toString() + mousePostfix();
+	else
+		s = keyPrefix() + m_KeySequence.toString() + keyPostfix();
+
+	setText(s);
+}