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RenderWidget.cpp
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RenderWidget.cpp
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// Copyright 2015 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <QApplication>
#include <QDesktopWidget>
#include <QGuiApplication>
#include <QIcon>
#include <QKeyEvent>
#include <QMouseEvent>
#include <QPalette>
#include <QScreen>
#include <QTimer>
#include "Core/ConfigManager.h"
#include "Core/Core.h"
#include "DolphinQt/Host.h"
#include "DolphinQt/RenderWidget.h"
#include "DolphinQt/Resources.h"
#include "DolphinQt/Settings.h"
#include "VideoCommon/VertexShaderManager.h"
#include "VideoCommon/VideoConfig.h"
RenderWidget::RenderWidget(QWidget* parent) : QWidget(parent)
{
setWindowTitle(QStringLiteral("Dolphin"));
setWindowIcon(Resources::GetAppIcon());
QPalette p;
p.setColor(QPalette::Background, Qt::black);
setPalette(p);
connect(Host::GetInstance(), &Host::RequestTitle, this, &RenderWidget::setWindowTitle);
connect(Host::GetInstance(), &Host::RequestRenderSize, this, [this](int w, int h) {
if (!SConfig::GetInstance().bRenderWindowAutoSize || isFullScreen() || isMaximized())
return;
resize(w, h);
});
connect(&Settings::Instance(), &Settings::EmulationStateChanged, this, [this](Core::State state) {
SetFillBackground(SConfig::GetInstance().bRenderToMain && state == Core::State::Uninitialized);
});
// We have to use Qt::DirectConnection here because we don't want those signals to get queued
// (which results in them not getting called)
connect(this, &RenderWidget::StateChanged, Host::GetInstance(), &Host::SetRenderFullscreen,
Qt::DirectConnection);
connect(this, &RenderWidget::HandleChanged, Host::GetInstance(), &Host::SetRenderHandle,
Qt::DirectConnection);
connect(this, &RenderWidget::SizeChanged, Host::GetInstance(), &Host::ResizeSurface,
Qt::DirectConnection);
connect(this, &RenderWidget::FocusChanged, Host::GetInstance(), &Host::SetRenderFocus,
Qt::DirectConnection);
m_mouse_timer = new QTimer(this);
connect(m_mouse_timer, &QTimer::timeout, this, &RenderWidget::HandleCursorTimer);
m_mouse_timer->setSingleShot(true);
setMouseTracking(true);
connect(&Settings::Instance(), &Settings::HideCursorChanged, this,
&RenderWidget::OnHideCursorChanged);
OnHideCursorChanged();
connect(&Settings::Instance(), &Settings::KeepWindowOnTopChanged, this,
&RenderWidget::OnKeepOnTopChanged);
OnKeepOnTopChanged(Settings::Instance().IsKeepWindowOnTopEnabled());
m_mouse_timer->start(MOUSE_HIDE_DELAY);
// We need a native window to render into.
setAttribute(Qt::WA_NativeWindow);
SetFillBackground(true);
}
void RenderWidget::SetFillBackground(bool fill)
{
setAttribute(Qt::WA_OpaquePaintEvent, !fill);
setAttribute(Qt::WA_NoSystemBackground, !fill);
setAutoFillBackground(fill);
}
void RenderWidget::OnHideCursorChanged()
{
setCursor(Settings::Instance().GetHideCursor() ? Qt::BlankCursor : Qt::ArrowCursor);
}
void RenderWidget::OnKeepOnTopChanged(bool top)
{
const bool was_visible = isVisible();
setWindowFlags(top ? windowFlags() | Qt::WindowStaysOnTopHint :
windowFlags() & ~Qt::WindowStaysOnTopHint);
if (was_visible)
show();
}
void RenderWidget::HandleCursorTimer()
{
if (isActiveWindow())
setCursor(Qt::BlankCursor);
}
void RenderWidget::showFullScreen()
{
QWidget::showFullScreen();
const auto dpr =
QGuiApplication::screens()[QApplication::desktop()->screenNumber(this)]->devicePixelRatio();
emit SizeChanged(width() * dpr, height() * dpr);
}
bool RenderWidget::event(QEvent* event)
{
switch (event->type())
{
case QEvent::Paint:
return !autoFillBackground();
case QEvent::KeyPress:
{
QKeyEvent* ke = static_cast<QKeyEvent*>(event);
if (ke->key() == Qt::Key_Escape)
emit EscapePressed();
// The render window might flicker on some platforms because Qt tries to change focus to a new
// element when there is none (?) Handling this event before it reaches QWidget fixes the issue.
if (ke->key() == Qt::Key_Tab)
return true;
break;
}
case QEvent::MouseMove:
if (g_Config.bFreeLook)
OnFreeLookMouseMove(static_cast<QMouseEvent*>(event));
// [[fallthrough]]
case QEvent::MouseButtonPress:
if (!Settings::Instance().GetHideCursor() && isActiveWindow())
{
setCursor(Qt::ArrowCursor);
m_mouse_timer->start(MOUSE_HIDE_DELAY);
}
break;
case QEvent::WinIdChange:
emit HandleChanged(reinterpret_cast<void*>(winId()));
break;
case QEvent::WindowActivate:
if (SConfig::GetInstance().m_PauseOnFocusLost && Core::GetState() == Core::State::Paused)
Core::SetState(Core::State::Running);
emit FocusChanged(true);
break;
case QEvent::WindowDeactivate:
if (SConfig::GetInstance().m_PauseOnFocusLost && Core::GetState() == Core::State::Running)
Core::SetState(Core::State::Paused);
emit FocusChanged(false);
break;
case QEvent::Resize:
{
const QResizeEvent* se = static_cast<QResizeEvent*>(event);
QSize new_size = se->size();
auto* desktop = QApplication::desktop();
int screen_nr = desktop->screenNumber(this);
if (screen_nr == -1)
screen_nr = desktop->screenNumber(parentWidget());
const auto dpr = desktop->screen(screen_nr)->devicePixelRatio();
emit SizeChanged(new_size.width() * dpr, new_size.height() * dpr);
break;
}
case QEvent::WindowStateChange:
emit StateChanged(isFullScreen());
break;
case QEvent::Close:
emit Closed();
break;
default:
break;
}
return QWidget::event(event);
}
void RenderWidget::OnFreeLookMouseMove(QMouseEvent* event)
{
if (event->buttons() & Qt::MidButton)
{
// Mouse Move
VertexShaderManager::TranslateView((event->x() - m_last_mouse[0]) / 50.0f,
(event->y() - m_last_mouse[1]) / 50.0f);
}
else if (event->buttons() & Qt::RightButton)
{
// Mouse Look
VertexShaderManager::RotateView((event->x() - m_last_mouse[0]) / 200.0f,
(event->y() - m_last_mouse[1]) / 200.0f);
}
m_last_mouse[0] = event->x();
m_last_mouse[1] = event->y();
}