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DisplayWidget.cpp
357 lines (301 loc) · 9.56 KB
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DisplayWidget.cpp
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/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2022 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "PrecompiledHeader.h"
#include "DisplayWidget.h"
#include "EmuThread.h"
#include "QtHost.h"
#include "pcsx2/GS/GSIntrin.h" // _BitScanForward
#include <QtCore/QDebug>
#include <QtGui/QGuiApplication>
#include <QtGui/QKeyEvent>
#include <QtGui/QResizeEvent>
#include <QtGui/QScreen>
#include <QtGui/QWindow>
#include <QtGui/QWindowStateChangeEvent>
#include <cmath>
#if !defined(_WIN32) && !defined(APPLE)
#include <qpa/qplatformnativeinterface.h>
#endif
DisplayWidget::DisplayWidget(QWidget* parent)
: QWidget(parent)
{
// We want a native window for both D3D and OpenGL.
setAutoFillBackground(false);
setAttribute(Qt::WA_NativeWindow, true);
setAttribute(Qt::WA_NoSystemBackground, true);
setAttribute(Qt::WA_PaintOnScreen, true);
setAttribute(Qt::WA_KeyCompression, false);
setFocusPolicy(Qt::StrongFocus);
setMouseTracking(true);
}
DisplayWidget::~DisplayWidget() = default;
qreal DisplayWidget::devicePixelRatioFromScreen() const
{
const QScreen* screen_for_ratio = screen();
if (!screen_for_ratio)
screen_for_ratio = QGuiApplication::primaryScreen();
return screen_for_ratio ? screen_for_ratio->devicePixelRatio() : static_cast<qreal>(1);
}
int DisplayWidget::scaledWindowWidth() const
{
return static_cast<int>(std::ceil(static_cast<qreal>(width()) * devicePixelRatioFromScreen()));
}
int DisplayWidget::scaledWindowHeight() const
{
return static_cast<int>(std::ceil(static_cast<qreal>(height()) * devicePixelRatioFromScreen()));
}
std::optional<WindowInfo> DisplayWidget::getWindowInfo() const
{
WindowInfo wi;
// Windows and Apple are easy here since there's no display connection.
#if defined(_WIN32)
wi.type = WindowInfo::Type::Win32;
wi.window_handle = reinterpret_cast<void*>(winId());
#elif defined(__APPLE__)
wi.type = WindowInfo::Type::MacOS;
wi.window_handle = reinterpret_cast<void*>(winId());
#else
QPlatformNativeInterface* pni = QGuiApplication::platformNativeInterface();
const QString platform_name = QGuiApplication::platformName();
if (platform_name == QStringLiteral("xcb"))
{
wi.type = WindowInfo::Type::X11;
wi.display_connection = pni->nativeResourceForWindow("display", windowHandle());
wi.window_handle = reinterpret_cast<void*>(winId());
}
else if (platform_name == QStringLiteral("wayland"))
{
wi.type = WindowInfo::Type::Wayland;
wi.display_connection = pni->nativeResourceForWindow("display", windowHandle());
wi.window_handle = pni->nativeResourceForWindow("surface", windowHandle());
}
else
{
qCritical() << "Unknown PNI platform " << platform_name;
return std::nullopt;
}
#endif
wi.surface_width = scaledWindowWidth();
wi.surface_height = scaledWindowHeight();
wi.surface_scale = devicePixelRatioFromScreen();
return wi;
}
void DisplayWidget::setRelativeMode(bool enabled)
{
if (m_relative_mouse_enabled == enabled)
return;
if (enabled)
{
m_relative_mouse_start_position = QCursor::pos();
const QPoint center_pos = mapToGlobal(QPoint(width() / 2, height() / 2));
QCursor::setPos(center_pos);
m_relative_mouse_last_position = center_pos;
grabMouse();
}
else
{
QCursor::setPos(m_relative_mouse_start_position);
releaseMouse();
}
m_relative_mouse_enabled = enabled;
}
QPaintEngine* DisplayWidget::paintEngine() const
{
return nullptr;
}
bool DisplayWidget::event(QEvent* event)
{
switch (event->type())
{
case QEvent::KeyPress:
case QEvent::KeyRelease:
{
const QKeyEvent* key_event = static_cast<QKeyEvent*>(event);
if (key_event->isAutoRepeat())
return true;
// For some reason, Windows sends "fake" key events.
// Scenario: Press shift, press F1, release shift, release F1.
// Events: Shift=Pressed, F1=Pressed, Shift=Released, **F1=Pressed**, F1=Released.
// To work around this, we keep track of keys pressed with modifiers in a list, and
// discard the press event when it's been previously activated. It's pretty gross,
// but I can't think of a better way of handling it, and there doesn't appear to be
// any window flag which changes this behavior that I can see.
const int key = key_event->key();
const bool pressed = (key_event->type() == QEvent::KeyPress);
const auto it = std::find(m_keys_pressed_with_modifiers.begin(), m_keys_pressed_with_modifiers.end(), key);
if (it != m_keys_pressed_with_modifiers.end())
{
if (pressed)
return true;
else
m_keys_pressed_with_modifiers.erase(it);
}
else if (key_event->modifiers() != Qt::NoModifier && pressed)
{
m_keys_pressed_with_modifiers.push_back(key);
}
emit windowKeyEvent(key, pressed);
return true;
}
case QEvent::MouseMove:
{
const QMouseEvent* mouse_event = static_cast<QMouseEvent*>(event);
if (!m_relative_mouse_enabled)
{
const qreal dpr = devicePixelRatioFromScreen();
const QPoint mouse_pos = mouse_event->pos();
const int scaled_x = static_cast<int>(static_cast<qreal>(mouse_pos.x()) * dpr);
const int scaled_y = static_cast<int>(static_cast<qreal>(mouse_pos.y()) * dpr);
windowMouseMoveEvent(scaled_x, scaled_y);
}
else
{
const QPoint center_pos = mapToGlobal(QPoint((width() + 1) / 2, (height() + 1) / 2));
const QPoint mouse_pos = mapToGlobal(mouse_event->pos());
const int dx = mouse_pos.x() - center_pos.x();
const int dy = mouse_pos.y() - center_pos.y();
m_relative_mouse_last_position.setX(m_relative_mouse_last_position.x() + dx);
m_relative_mouse_last_position.setY(m_relative_mouse_last_position.y() + dy);
windowMouseMoveEvent(m_relative_mouse_last_position.x(), m_relative_mouse_last_position.y());
QCursor::setPos(center_pos);
}
return true;
}
case QEvent::MouseButtonPress:
case QEvent::MouseButtonDblClick:
case QEvent::MouseButtonRelease:
{
unsigned long button_index;
if (_BitScanForward(&button_index, static_cast<u32>(static_cast<const QMouseEvent*>(event)->button())))
emit windowMouseButtonEvent(static_cast<int>(button_index + 1u), event->type() != QEvent::MouseButtonRelease);
if (event->type() == QEvent::MouseButtonDblClick &&
static_cast<const QMouseEvent*>(event)->button() == Qt::LeftButton &&
Host::GetBoolSettingValue("UI", "DoubleClickTogglesFullscreen", true))
{
g_emu_thread->toggleFullscreen();
}
return true;
}
case QEvent::Wheel:
{
const QWheelEvent* wheel_event = static_cast<QWheelEvent*>(event);
emit windowMouseWheelEvent(wheel_event->angleDelta());
return true;
}
case QEvent::Resize:
{
QWidget::event(event);
const qreal dpr = devicePixelRatioFromScreen();
const QSize size = static_cast<QResizeEvent*>(event)->size();
const int width = static_cast<int>(std::ceil(static_cast<qreal>(size.width()) * devicePixelRatioFromScreen()));
const int height = static_cast<int>(std::ceil(static_cast<qreal>(size.height()) * devicePixelRatioFromScreen()));
emit windowResizedEvent(width, height, dpr);
return true;
}
case QEvent::Close:
{
emit windowClosedEvent();
QWidget::event(event);
return true;
}
case QEvent::WindowStateChange:
{
QWidget::event(event);
if (static_cast<QWindowStateChangeEvent*>(event)->oldState() & Qt::WindowMinimized)
emit windowRestoredEvent();
return true;
}
case QEvent::FocusIn:
{
QWidget::event(event);
emit windowFocusEvent();
return true;
}
case QEvent::ActivationChange:
{
QWidget::event(event);
if (isActiveWindow())
emit windowFocusEvent();
return true;
}
default:
return QWidget::event(event);
}
}
DisplayContainer::DisplayContainer()
: QStackedWidget(nullptr)
{
}
DisplayContainer::~DisplayContainer() = default;
bool DisplayContainer::IsNeeded(bool fullscreen, bool render_to_main)
{
#if defined(_WIN32) || defined(__APPLE__)
return false;
#else
if (!fullscreen && render_to_main)
return false;
// We only need this on Wayland because of client-side decorations...
const QString platform_name = QGuiApplication::platformName();
return (platform_name == QStringLiteral("wayland"));
#endif
}
void DisplayContainer::setDisplayWidget(DisplayWidget* widget)
{
pxAssert(!m_display_widget);
m_display_widget = widget;
addWidget(widget);
}
DisplayWidget* DisplayContainer::removeDisplayWidget()
{
DisplayWidget* widget = m_display_widget;
pxAssert(widget);
m_display_widget = nullptr;
removeWidget(widget);
return widget;
}
bool DisplayContainer::event(QEvent* event)
{
const bool res = QStackedWidget::event(event);
if (!m_display_widget)
return res;
switch (event->type())
{
case QEvent::Close:
{
emit m_display_widget->windowClosedEvent();
}
break;
case QEvent::WindowStateChange:
{
if (static_cast<QWindowStateChangeEvent*>(event)->oldState() & Qt::WindowMinimized)
emit m_display_widget->windowRestoredEvent();
}
break;
case QEvent::FocusIn:
{
emit m_display_widget->windowFocusEvent();
}
break;
case QEvent::ActivationChange:
{
if (isActiveWindow())
emit m_display_widget->windowFocusEvent();
}
break;
default:
break;
}
return res;
}