1/* Copyright (c) 2013-2014 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#include "KeyEditor.h"
  7
  8#include "GamepadAxisEvent.h"
  9#include "GamepadButtonEvent.h"
 10#include "ShortcutController.h"
 11
 12#include <QKeyEvent>
 13
 14using namespace QGBA;
 15
 16KeyEditor::KeyEditor(QWidget* parent)
 17	: QLineEdit(parent)
 18	, m_direction(GamepadAxisEvent::NEUTRAL)
 19	, m_key(-1)
 20	, m_axis(-1)
 21	, m_button(false)
 22{
 23	setAlignment(Qt::AlignCenter);
 24	setFocusPolicy(Qt::ClickFocus);
 25}
 26
 27void KeyEditor::setValue(int key) {
 28	m_key = key;
 29	if (m_button) {
 30		updateButtonText();
 31	} else {
 32		if (key < 0) {
 33			setText(tr("---"));
 34		} else {
 35			setText(QKeySequence(key).toString(QKeySequence::NativeText));
 36		}
 37	}
 38	emit valueChanged(key);
 39}
 40
 41void KeyEditor::setValueKey(int key) {
 42	m_button = false;
 43	setValue(key);
 44}
 45
 46void KeyEditor::setValueButton(int button) {
 47	m_button = true;
 48	setValue(button);
 49}
 50
 51void KeyEditor::setValueAxis(int axis, int32_t value) {
 52	m_button = true;
 53	m_axis = axis;
 54	m_direction = value < 0 ? GamepadAxisEvent::NEGATIVE : GamepadAxisEvent::POSITIVE;
 55	updateButtonText();
 56	emit axisChanged(axis, m_direction);
 57}
 58
 59void KeyEditor::clearButton() {
 60	m_button = true;
 61	setValue(-1);
 62}
 63
 64void KeyEditor::clearAxis() {
 65	m_button = true;
 66	m_axis = -1;
 67	m_direction = GamepadAxisEvent::NEUTRAL;
 68	updateButtonText();
 69	emit axisChanged(m_axis, m_direction);
 70}
 71
 72QSize KeyEditor::sizeHint() const {
 73	QSize hint = QLineEdit::sizeHint();
 74	hint.setWidth(40);
 75	return hint;
 76}
 77
 78void KeyEditor::keyPressEvent(QKeyEvent* event) {
 79	if (!m_button) {
 80		if (m_key < 0) {
 81			m_key = 0;
 82		}
 83		if (ShortcutController::isModifierKey(event->key())) {
 84			switch (event->key()) {
 85			case Qt::Key_Shift:
 86				setValue(m_key | Qt::ShiftModifier);
 87				break;
 88			case Qt::Key_Control:
 89				setValue(m_key | Qt::ControlModifier);
 90				break;
 91			case Qt::Key_Alt:
 92				setValue(m_key | Qt::AltModifier);
 93				break;
 94			case Qt::Key_Meta:
 95				setValue(m_key | Qt::MetaModifier);
 96				break;
 97			default:
 98				setValue(m_key);
 99			}
100		} else {
101			setValue(event->key() | (m_key & (Qt::ShiftModifier | Qt::ControlModifier | Qt::AltModifier | Qt::MetaModifier)));
102		}
103	}
104	event->accept();
105}
106
107bool KeyEditor::event(QEvent* event) {
108	if (!m_button) {
109		if (event->type() == QEvent::KeyPress) {
110			QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
111			if (keyEvent->key() != Qt::Key_Tab && keyEvent->key() != Qt::Key_Backtab) {
112				return QWidget::event(event);
113			}
114			if (!(keyEvent->modifiers() & ~Qt::ShiftModifier)) {
115				keyPressEvent(keyEvent);
116				keyEvent->accept();
117				return true;
118			}
119		}
120	} else {
121		if (event->type() == GamepadButtonEvent::Down()) {
122			setValueButton(static_cast<GamepadButtonEvent*>(event)->value());
123			event->accept();
124			return true;
125		}
126		if (event->type() == GamepadAxisEvent::Type()) {
127			GamepadAxisEvent* gae = static_cast<GamepadAxisEvent*>(event);
128			if (gae->isNew()) {
129				setValueAxis(gae->axis(), gae->direction());
130			}
131			event->accept();
132			return true;
133		}
134	}
135	return QWidget::event(event);
136}
137
138void KeyEditor::updateButtonText() {
139	QStringList text;
140	if (m_key >= 0) {
141		text.append(QString::number(m_key));
142	}
143	if (m_direction != GamepadAxisEvent::NEUTRAL) {
144		text.append((m_direction == GamepadAxisEvent::NEGATIVE ? "-" : "+") + QString::number(m_axis));
145	}
146	if (text.isEmpty()) {
147		setText(tr("---"));
148	} else {
149		setText(text.join("/"));
150	}
151}