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Fix DPI scaling for fullscreen mode on high-DPI displays

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Co-authored-by: emako <24737061+emako@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot]
2026-02-13 04:17:19 +00:00
parent 8e5509203e
commit b21a007455
1 changed files with 9 additions and 5 deletions
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14
QuickLook/ViewerWindow.Actions.cs
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@@ -108,6 +108,9 @@ public partial class ViewerWindow
var screen = WinForms.Screen.FromHandle(new WindowInteropHelper(this).Handle);
var screenBounds = screen.Bounds;
// Get DPI scale factor for proper coordinate conversion
var scale = DisplayDeviceHelper.GetScaleFactorFromWindow(this);
// Set to normal state first to allow manual positioning
WindowState = WindowState.Normal;
@@ -115,11 +118,12 @@ public partial class ViewerWindow
WindowStyle = WindowStyle.None;
ResizeMode = ResizeMode.NoResize;
// Set window to cover the entire screen
Left = screenBounds.Left;
Top = screenBounds.Top;
Width = screenBounds.Width;
Height = screenBounds.Height;
// Convert screen bounds from physical pixels to DIPs for WPF
var dipWidth = screenBounds.Width / scale.Horizontal;
var dipHeight = screenBounds.Height / scale.Vertical;
// Use MoveWindow to set position and size with proper DPI handling
this.MoveWindow(screenBounds.Left, screenBounds.Top, dipWidth, dipHeight);
}
}