dolphin/Source/Core/DolphinQt/TAS/StickWidget.cpp
2019-03-26 00:38:25 +01:00

95 lines
2.2 KiB
C++

// Copyright 2018 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "DolphinQt/TAS/StickWidget.h"
#include <algorithm>
#include <cmath>
#include <QMouseEvent>
#include <QPainter>
#include "Common/CommonTypes.h"
StickWidget::StickWidget(QWidget* parent, u16 max_x, u16 max_y)
: QWidget(parent), m_max_x(max_x), m_max_y(max_y)
{
setMouseTracking(false);
setToolTip(tr("Left click to set the stick value.\n"
"Right click to re-center it."));
}
void StickWidget::SetX(u16 x)
{
m_x = std::min(m_max_x, x);
update();
}
void StickWidget::SetY(u16 y)
{
m_y = std::min(m_max_y, y);
update();
}
void StickWidget::paintEvent(QPaintEvent* event)
{
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing, true);
painter.setRenderHint(QPainter::SmoothPixmapTransform, true);
painter.setBrush(Qt::white);
painter.drawEllipse(0, 0, width() - 1, height() - 1);
painter.drawLine(0, height() / 2, width(), height() / 2);
painter.drawLine(width() / 2, 0, width() / 2, height());
// convert from value space to widget space
u16 x = (m_x * width()) / m_max_x;
u16 y = height() - (m_y * height()) / m_max_y;
painter.drawLine(width() / 2, height() / 2, x, y);
painter.setBrush(Qt::blue);
int wh_avg = (width() + height()) / 2;
int radius = wh_avg / 30;
painter.drawEllipse(x - radius, y - radius, radius * 2, radius * 2);
}
void StickWidget::mousePressEvent(QMouseEvent* event)
{
handleMouseEvent(event);
m_ignore_movement = event->button() == Qt::RightButton;
}
void StickWidget::mouseMoveEvent(QMouseEvent* event)
{
if (!m_ignore_movement)
handleMouseEvent(event);
}
void StickWidget::handleMouseEvent(QMouseEvent* event)
{
if (event->button() == Qt::RightButton)
{
m_x = std::round(m_max_x / 2.);
m_y = std::round(m_max_y / 2.);
}
else
{
// convert from widget space to value space
int new_x = (event->x() * m_max_x) / width();
int new_y = m_max_y - (event->y() * m_max_y) / height();
m_x = std::max(0, std::min(static_cast<int>(m_max_x), new_x));
m_y = std::max(0, std::min(static_cast<int>(m_max_y), new_y));
}
emit ChangedX(m_x);
emit ChangedY(m_y);
update();
}