From ad6cec71ecd61aa2533d9efa89b68837516f8464 Mon Sep 17 00:00:00 2001
From: Morph <39850852+Morph1984@users.noreply.github.com>
Date: Wed, 25 Jan 2023 21:16:05 -0500
Subject: [PATCH] main: Convert to device independent coordinates for scaling

devicePixelRatioF() returns the scaling ratio when high dpi scaling is enabled.
When high dpi scaling is enabled, the raw screen coordinate system is scaled to device independent coordinates.
---
 src/yuzu/applets/qt_software_keyboard.cpp |  2 +-
 src/yuzu/main.cpp                         | 17 +++++++++++------
 src/yuzu/util/overlay_dialog.cpp          |  2 +-
 3 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/src/yuzu/applets/qt_software_keyboard.cpp b/src/yuzu/applets/qt_software_keyboard.cpp
index 734b0ea40..4ae49506d 100644
--- a/src/yuzu/applets/qt_software_keyboard.cpp
+++ b/src/yuzu/applets/qt_software_keyboard.cpp
@@ -575,7 +575,7 @@ void QtSoftwareKeyboardDialog::MoveAndResizeWindow(QPoint pos, QSize size) {
     QDialog::resize(size);
 
     // High DPI
-    const float dpi_scale = qApp->screenAt(pos)->logicalDotsPerInch() / 96.0f;
+    const float dpi_scale = screen()->logicalDotsPerInch() / 96.0f;
 
     RescaleKeyboardElements(size.width(), size.height(), dpi_scale);
 }
diff --git a/src/yuzu/main.cpp b/src/yuzu/main.cpp
index 53249426c..ee8ea82fd 100644
--- a/src/yuzu/main.cpp
+++ b/src/yuzu/main.cpp
@@ -680,8 +680,10 @@ void GMainWindow::SoftwareKeyboardShowNormal() {
     const auto y = layout.screen.top;
     const auto w = layout.screen.GetWidth();
     const auto h = layout.screen.GetHeight();
+    const auto scale_ratio = devicePixelRatioF();
 
-    software_keyboard->ShowNormalKeyboard(render_window->mapToGlobal(QPoint(x, y)), QSize(w, h));
+    software_keyboard->ShowNormalKeyboard(render_window->mapToGlobal(QPoint(x, y) / scale_ratio),
+                                          QSize(w, h) / scale_ratio);
 }
 
 void GMainWindow::SoftwareKeyboardShowTextCheck(
@@ -714,9 +716,11 @@ void GMainWindow::SoftwareKeyboardShowInline(
                                                (1.0f - appear_parameters.key_top_scale_y))));
     const auto w = static_cast<int>(layout.screen.GetWidth() * appear_parameters.key_top_scale_x);
     const auto h = static_cast<int>(layout.screen.GetHeight() * appear_parameters.key_top_scale_y);
+    const auto scale_ratio = devicePixelRatioF();
 
     software_keyboard->ShowInlineKeyboard(std::move(appear_parameters),
-                                          render_window->mapToGlobal(QPoint(x, y)), QSize(w, h));
+                                          render_window->mapToGlobal(QPoint(x, y) / scale_ratio),
+                                          QSize(w, h) / scale_ratio);
 }
 
 void GMainWindow::SoftwareKeyboardHideInline() {
@@ -796,10 +800,11 @@ void GMainWindow::WebBrowserOpenWebPage(const std::string& main_url,
         }
 
         const auto& layout = render_window->GetFramebufferLayout();
-        web_browser_view.resize(layout.screen.GetWidth(), layout.screen.GetHeight());
-        web_browser_view.move(layout.screen.left, layout.screen.top + menuBar()->height());
-        web_browser_view.setZoomFactor(static_cast<qreal>(layout.screen.GetWidth()) /
-                                       static_cast<qreal>(Layout::ScreenUndocked::Width));
+        const auto scale_ratio = devicePixelRatioF();
+        web_browser_view.resize(layout.screen.GetWidth() / scale_ratio,
+                                layout.screen.GetHeight() / scale_ratio);
+        web_browser_view.move(layout.screen.left / scale_ratio,
+                              (layout.screen.top / scale_ratio) + menuBar()->height());
 
         web_browser_view.setFocus();
         web_browser_view.show();
diff --git a/src/yuzu/util/overlay_dialog.cpp b/src/yuzu/util/overlay_dialog.cpp
index 796f5bf41..ee35a3e15 100644
--- a/src/yuzu/util/overlay_dialog.cpp
+++ b/src/yuzu/util/overlay_dialog.cpp
@@ -163,7 +163,7 @@ void OverlayDialog::MoveAndResizeWindow() {
     const auto height = static_cast<float>(parentWidget()->height());
 
     // High DPI
-    const float dpi_scale = parentWidget()->windowHandle()->screen()->logicalDotsPerInch() / 96.0f;
+    const float dpi_scale = screen()->logicalDotsPerInch() / 96.0f;
 
     const auto title_text_font_size = BASE_TITLE_FONT_SIZE * (height / BASE_HEIGHT) / dpi_scale;
     const auto body_text_font_size =