1 files changed, 564 insertions, 0 deletions
diff --git a/src/frontend/qt_sdl/Screen.cpp b/src/frontend/qt_sdl/Screen.cpp
new file mode 100644
index 0000000..6de4d78
--- /dev/null
+++ b/src/frontend/qt_sdl/Screen.cpp
@@ -0,0 +1,564 @@
+/*
+    Copyright 2016-2023 melonDS team
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS 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 melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#include <stdlib.h>
+#include <time.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <optional>
+#include <vector>
+#include <string>
+#include <algorithm>
+
+#include <QPaintEvent>
+#include <QPainter>
+#ifndef _WIN32
+#ifndef APPLE
+#include <qpa/qplatformnativeinterface.h>
+#endif
+#endif
+
+#include "main.h"
+
+#include "NDS.h"
+#include "Platform.h"
+#include "Config.h"
+
+//#include "main_shaders.h"
+
+#include "OSD.h"
+
+using namespace melonDS;
+
+
+/*const struct { int id; float ratio; const char* label; } aspectRatios[] =
+{
+    { 0, 1,                       "4:3 (native)" },
+    { 4, (5.f  / 3) / (4.f / 3), "5:3 (3DS)"},
+    { 1, (16.f / 9) / (4.f / 3),  "16:9" },
+    { 2, (21.f / 9) / (4.f / 3),  "21:9" },
+    { 3, 0,                       "window" }
+};
+int AspectRatiosNum = sizeof(aspectRatios) / sizeof(aspectRatios[0]);*/
+
+// TEMP
+extern MainWindow* mainWindow;
+extern EmuThread* emuThread;
+extern bool RunningSomething;
+extern int autoScreenSizing;
+
+extern int videoRenderer;
+extern bool videoSettingsDirty;
+
+
+ScreenHandler::ScreenHandler(QWidget* widget)
+{
+    widget->setMouseTracking(true);
+    widget->setAttribute(Qt::WA_AcceptTouchEvents);
+    QTimer* mouseTimer = setupMouseTimer();
+    widget->connect(mouseTimer, &QTimer::timeout, [=] { if (Config::MouseHide) widget->setCursor(Qt::BlankCursor);});
+}
+
+ScreenHandler::~ScreenHandler()
+{
+    mouseTimer->stop();
+    delete mouseTimer;
+}
+
+void ScreenHandler::screenSetupLayout(int w, int h)
+{
+    int sizing = Config::ScreenSizing;
+    if (sizing == 3) sizing = autoScreenSizing;
+
+    float aspectTop, aspectBot;
+
+    for (auto ratio : aspectRatios)
+    {
+        if (ratio.id == Config::ScreenAspectTop)
+            aspectTop = ratio.ratio;
+        if (ratio.id == Config::ScreenAspectBot)
+            aspectBot = ratio.ratio;
+    }
+
+    if (aspectTop == 0)
+        aspectTop = ((float) w / h) / (4.f / 3.f);
+
+    if (aspectBot == 0)
+        aspectBot = ((float) w / h) / (4.f / 3.f);
+
+    Frontend::SetupScreenLayout(w, h,
+                                static_cast<Frontend::ScreenLayout>(Config::ScreenLayout),
+                                static_cast<Frontend::ScreenRotation>(Config::ScreenRotation),
+                                static_cast<Frontend::ScreenSizing>(sizing),
+                                Config::ScreenGap,
+                                Config::IntegerScaling != 0,
+                                Config::ScreenSwap != 0,
+                                aspectTop,
+                                aspectBot);
+
+    numScreens = Frontend::GetScreenTransforms(screenMatrix[0], screenKind);
+}
+
+QSize ScreenHandler::screenGetMinSize(int factor = 1)
+{
+    bool isHori = (Config::ScreenRotation == Frontend::screenRot_90Deg
+        || Config::ScreenRotation == Frontend::screenRot_270Deg);
+    int gap = Config::ScreenGap * factor;
+
+    int w = 256 * factor;
+    int h = 192 * factor;
+
+    if (Config::ScreenSizing == Frontend::screenSizing_TopOnly
+        || Config::ScreenSizing == Frontend::screenSizing_BotOnly)
+    {
+        return QSize(w, h);
+    }
+
+    if (Config::ScreenLayout == Frontend::screenLayout_Natural)
+    {
+        if (isHori)
+            return QSize(h+gap+h, w);
+        else
+            return QSize(w, h+gap+h);
+    }
+    else if (Config::ScreenLayout == Frontend::screenLayout_Vertical)
+    {
+        if (isHori)
+            return QSize(h, w+gap+w);
+        else
+            return QSize(w, h+gap+h);
+    }
+    else if (Config::ScreenLayout == Frontend::screenLayout_Horizontal)
+    {
+        if (isHori)
+            return QSize(h+gap+h, w);
+        else
+            return QSize(w+gap+w, h);
+    }
+    else // hybrid
+    {
+        if (isHori)
+            return QSize(h+gap+h, 3*w + (int)ceil((4*gap) / 3.0));
+        else
+            return QSize(3*w + (int)ceil((4*gap) / 3.0), h+gap+h);
+    }
+}
+
+void ScreenHandler::screenOnMousePress(QMouseEvent* event)
+{
+    event->accept();
+    if (event->button() != Qt::LeftButton) return;
+
+    int x = event->pos().x();
+    int y = event->pos().y();
+
+    if (Frontend::GetTouchCoords(x, y, false))
+    {
+        touching = true;
+        assert(emuThread->NDS != nullptr);
+        emuThread->NDS->TouchScreen(x, y);
+    }
+}
+
+void ScreenHandler::screenOnMouseRelease(QMouseEvent* event)
+{
+    event->accept();
+    if (event->button() != Qt::LeftButton) return;
+
+    if (touching)
+    {
+        touching = false;
+        assert(emuThread->NDS != nullptr);
+        emuThread->NDS->ReleaseScreen();
+    }
+}
+
+void ScreenHandler::screenOnMouseMove(QMouseEvent* event)
+{
+    event->accept();
+
+    showCursor();
+
+    if (!(event->buttons() & Qt::LeftButton)) return;
+    if (!touching) return;
+
+    int x = event->pos().x();
+    int y = event->pos().y();
+
+    if (Frontend::GetTouchCoords(x, y, true))
+    {
+        assert(emuThread->NDS != nullptr);
+        emuThread->NDS->TouchScreen(x, y);
+    }
+}
+
+void ScreenHandler::screenHandleTablet(QTabletEvent* event)
+{
+    event->accept();
+
+    switch(event->type())
+    {
+    case QEvent::TabletPress:
+    case QEvent::TabletMove:
+        {
+            int x = event->x();
+            int y = event->y();
+
+            if (Frontend::GetTouchCoords(x, y, event->type()==QEvent::TabletMove))
+            {
+                touching = true;
+                assert(emuThread->NDS != nullptr);
+                emuThread->NDS->TouchScreen(x, y);
+            }
+        }
+        break;
+    case QEvent::TabletRelease:
+        if (touching)
+        {
+            assert(emuThread->NDS != nullptr);
+            emuThread->NDS->ReleaseScreen();
+            touching = false;
+        }
+        break;
+    default:
+        break;
+    }
+}
+
+void ScreenHandler::screenHandleTouch(QTouchEvent* event)
+{
+    event->accept();
+
+    switch(event->type())
+    {
+    case QEvent::TouchBegin:
+    case QEvent::TouchUpdate:
+        if (event->touchPoints().length() > 0)
+        {
+            QPointF lastPosition = event->touchPoints().first().lastPos();
+            int x = (int)lastPosition.x();
+            int y = (int)lastPosition.y();
+
+            if (Frontend::GetTouchCoords(x, y, event->type()==QEvent::TouchUpdate))
+            {
+                touching = true;
+                assert(emuThread->NDS != nullptr);
+                emuThread->NDS->TouchScreen(x, y);
+            }
+        }
+        break;
+    case QEvent::TouchEnd:
+        if (touching)
+        {
+            assert(emuThread->NDS != nullptr);
+            emuThread->NDS->ReleaseScreen();
+            touching = false;
+        }
+        break;
+    default:
+        break;
+    }
+}
+
+void ScreenHandler::showCursor()
+{
+    mainWindow->panelWidget->setCursor(Qt::ArrowCursor);
+    mouseTimer->start();
+}
+
+QTimer* ScreenHandler::setupMouseTimer()
+{
+    mouseTimer = new QTimer();
+    mouseTimer->setSingleShot(true);
+    mouseTimer->setInterval(Config::MouseHideSeconds*1000);
+    mouseTimer->start();
+
+    return mouseTimer;
+}
+
+ScreenPanelNative::ScreenPanelNative(QWidget* parent) : QWidget(parent), ScreenHandler(this)
+{
+    screen[0] = QImage(256, 192, QImage::Format_RGB32);
+    screen[1] = QImage(256, 192, QImage::Format_RGB32);
+
+    screenTrans[0].reset();
+    screenTrans[1].reset();
+
+    OSD::Init(false);
+}
+
+ScreenPanelNative::~ScreenPanelNative()
+{
+    OSD::DeInit();
+}
+
+void ScreenPanelNative::setupScreenLayout()
+{
+    int w = width();
+    int h = height();
+
+    screenSetupLayout(w, h);
+
+    for (int i = 0; i < numScreens; i++)
+    {
+        float* mtx = screenMatrix[i];
+        screenTrans[i].setMatrix(mtx[0], mtx[1], 0.f,
+                                mtx[2], mtx[3], 0.f,
+                                mtx[4], mtx[5], 1.f);
+    }
+}
+
+void ScreenPanelNative::paintEvent(QPaintEvent* event)
+{
+    QPainter painter(this);
+
+    // fill background
+    painter.fillRect(event->rect(), QColor::fromRgb(0, 0, 0));
+
+    if (emuThread->emuIsActive())
+    {
+        assert(emuThread->NDS != nullptr);
+        emuThread->FrontBufferLock.lock();
+        int frontbuf = emuThread->FrontBuffer;
+        if (!emuThread->NDS->GPU.Framebuffer[frontbuf][0] || !emuThread->NDS->GPU.Framebuffer[frontbuf][1])
+        {
+            emuThread->FrontBufferLock.unlock();
+            return;
+        }
+
+        memcpy(screen[0].scanLine(0), emuThread->NDS->GPU.Framebuffer[frontbuf][0].get(), 256 * 192 * 4);
+        memcpy(screen[1].scanLine(0), emuThread->NDS->GPU.Framebuffer[frontbuf][1].get(), 256 * 192 * 4);
+        emuThread->FrontBufferLock.unlock();
+
+        QRect screenrc(0, 0, 256, 192);
+
+        for (int i = 0; i < numScreens; i++)
+        {
+            painter.setTransform(screenTrans[i]);
+            painter.drawImage(screenrc, screen[screenKind[i]]);
+        }
+    }
+
+    OSD::Update();
+    OSD::DrawNative(painter);
+}
+
+void ScreenPanelNative::resizeEvent(QResizeEvent* event)
+{
+    setupScreenLayout();
+}
+
+void ScreenPanelNative::mousePressEvent(QMouseEvent* event)
+{
+    screenOnMousePress(event);
+}
+
+void ScreenPanelNative::mouseReleaseEvent(QMouseEvent* event)
+{
+    screenOnMouseRelease(event);
+}
+
+void ScreenPanelNative::mouseMoveEvent(QMouseEvent* event)
+{
+    screenOnMouseMove(event);
+}
+
+void ScreenPanelNative::tabletEvent(QTabletEvent* event)
+{
+    screenHandleTablet(event);
+}
+
+bool ScreenPanelNative::event(QEvent* event)
+{
+    if (event->type() == QEvent::TouchBegin
+        || event->type() == QEvent::TouchEnd
+        || event->type() == QEvent::TouchUpdate)
+    {
+        screenHandleTouch((QTouchEvent*)event);
+        return true;
+    }
+    return QWidget::event(event);
+}
+
+void ScreenPanelNative::onScreenLayoutChanged()
+{
+    setMinimumSize(screenGetMinSize());
+    setupScreenLayout();
+}
+
+
+ScreenPanelGL::ScreenPanelGL(QWidget* parent) : QWidget(parent), ScreenHandler(this)
+{
+    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);
+    setMinimumSize(screenGetMinSize());
+}
+
+ScreenPanelGL::~ScreenPanelGL()
+{}
+
+bool ScreenPanelGL::createContext()
+{
+    std::optional<WindowInfo> windowInfo = getWindowInfo();
+    std::array<GL::Context::Version, 2> versionsToTry = {
+        GL::Context::Version{GL::Context::Profile::Core, 4, 3},
+        GL::Context::Version{GL::Context::Profile::Core, 3, 2}};
+    if (windowInfo.has_value())
+    {
+        glContext = GL::Context::Create(*getWindowInfo(), versionsToTry);
+        glContext->DoneCurrent();
+    }
+
+    return glContext != nullptr;
+}
+
+qreal ScreenPanelGL::devicePixelRatioFromScreen() const
+{
+    const QScreen* screen_for_ratio = window()->windowHandle()->screen();
+    if (!screen_for_ratio)
+        screen_for_ratio = QGuiApplication::primaryScreen();
+
+    return screen_for_ratio ? screen_for_ratio->devicePixelRatio() : static_cast<qreal>(1);
+}
+
+int ScreenPanelGL::scaledWindowWidth() const
+{
+  return std::max(static_cast<int>(std::ceil(static_cast<qreal>(width()) * devicePixelRatioFromScreen())), 1);
+}
+
+int ScreenPanelGL::scaledWindowHeight() const
+{
+  return std::max(static_cast<int>(std::ceil(static_cast<qreal>(height()) * devicePixelRatioFromScreen())), 1);
+}
+
+std::optional<WindowInfo> ScreenPanelGL::getWindowInfo()
+{
+    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;
+        QWindow* handle = windowHandle();
+        if (handle == nullptr)
+            return std::nullopt;
+
+        wi.display_connection = pni->nativeResourceForWindow("display", handle);
+        wi.window_handle = pni->nativeResourceForWindow("surface", handle);
+    }
+    else
+    {
+        qCritical() << "Unknown PNI platform " << platform_name;
+        return std::nullopt;
+    }
+    #endif
+
+    wi.surface_width = static_cast<u32>(scaledWindowWidth());
+    wi.surface_height = static_cast<u32>(scaledWindowHeight());
+    wi.surface_scale = static_cast<float>(devicePixelRatioFromScreen());
+
+    return wi;
+}
+
+
+QPaintEngine* ScreenPanelGL::paintEngine() const
+{
+  return nullptr;
+}
+
+void ScreenPanelGL::setupScreenLayout()
+{
+    int w = width();
+    int h = height();
+
+    screenSetupLayout(w, h);
+    if (emuThread)
+        transferLayout(emuThread);
+}
+
+void ScreenPanelGL::resizeEvent(QResizeEvent* event)
+{
+    setupScreenLayout();
+
+    QWidget::resizeEvent(event);
+}
+
+void ScreenPanelGL::mousePressEvent(QMouseEvent* event)
+{
+    screenOnMousePress(event);
+}
+
+void ScreenPanelGL::mouseReleaseEvent(QMouseEvent* event)
+{
+    screenOnMouseRelease(event);
+}
+
+void ScreenPanelGL::mouseMoveEvent(QMouseEvent* event)
+{
+    screenOnMouseMove(event);
+}
+
+void ScreenPanelGL::tabletEvent(QTabletEvent* event)
+{
+    screenHandleTablet(event);
+}
+
+bool ScreenPanelGL::event(QEvent* event)
+{
+    if (event->type() == QEvent::TouchBegin
+        || event->type() == QEvent::TouchEnd
+        || event->type() == QEvent::TouchUpdate)
+    {
+        screenHandleTouch((QTouchEvent*)event);
+        return true;
+    }
+    return QWidget::event(event);
+}
+
+void ScreenPanelGL::transferLayout(EmuThread* thread)
+{
+    std::optional<WindowInfo> windowInfo = getWindowInfo();
+    if (windowInfo.has_value())
+        thread->updateScreenSettings(Config::ScreenFilter, *windowInfo, numScreens, screenKind, &screenMatrix[0][0]);
+}
+
+void ScreenPanelGL::onScreenLayoutChanged()
+{
+    setMinimumSize(screenGetMinSize());
+    setupScreenLayout();
+}