102 lines
2.5 KiB
C++
102 lines
2.5 KiB
C++
// Copyright 2018 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include "DolphinQt/TAS/StickWidget.h"
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#include <algorithm>
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#include <cmath>
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#include <QMouseEvent>
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#include <QPainter>
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#include "Common/CommonTypes.h"
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constexpr int PADDING = 1;
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StickWidget::StickWidget(QWidget* parent, u16 max_x, u16 max_y)
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: QWidget(parent), m_max_x(max_x), m_max_y(max_y)
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{
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setMouseTracking(false);
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setToolTip(tr("Left click to set the stick value.\n"
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"Right click to re-center it."));
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// If the widget gets too small, it will get deformed.
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setMinimumSize(QSize(64, 64));
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}
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void StickWidget::SetX(u16 x)
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{
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m_x = std::min(m_max_x, x);
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update();
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}
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void StickWidget::SetY(u16 y)
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{
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m_y = std::min(m_max_y, y);
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update();
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}
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void StickWidget::paintEvent(QPaintEvent* event)
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{
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing, true);
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painter.setRenderHint(QPainter::SmoothPixmapTransform, true);
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const int diameter = std::min(width(), height()) - PADDING * 2;
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painter.setBrush(Qt::white);
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painter.drawEllipse(PADDING, PADDING, diameter, diameter);
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painter.drawLine(PADDING, PADDING + diameter / 2, PADDING + diameter, PADDING + diameter / 2);
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painter.drawLine(PADDING + diameter / 2, PADDING, PADDING + diameter / 2, PADDING + diameter);
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// convert from value space to widget space
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u16 x = PADDING + ((m_x * diameter) / m_max_x);
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u16 y = PADDING + (diameter - (m_y * diameter) / m_max_y);
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painter.drawLine(PADDING + diameter / 2, PADDING + diameter / 2, x, y);
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painter.setBrush(Qt::blue);
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int neutral_radius = diameter / 30;
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painter.drawEllipse(x - neutral_radius, y - neutral_radius, neutral_radius * 2,
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neutral_radius * 2);
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}
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void StickWidget::mousePressEvent(QMouseEvent* event)
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{
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handleMouseEvent(event);
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m_ignore_movement = event->button() == Qt::RightButton;
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}
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void StickWidget::mouseMoveEvent(QMouseEvent* event)
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{
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if (!m_ignore_movement)
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handleMouseEvent(event);
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}
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void StickWidget::handleMouseEvent(QMouseEvent* event)
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{
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if (event->button() == Qt::RightButton)
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{
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m_x = std::round(m_max_x / 2.);
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m_y = std::round(m_max_y / 2.);
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}
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else
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{
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// convert from widget space to value space
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int new_x = (event->x() * m_max_x) / width();
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int new_y = m_max_y - (event->y() * m_max_y) / height();
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m_x = std::max(0, std::min(static_cast<int>(m_max_x), new_x));
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m_y = std::max(0, std::min(static_cast<int>(m_max_y), new_y));
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}
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emit ChangedX(m_x);
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emit ChangedY(m_y);
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update();
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}
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