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[PTRun]Fixed unstable startup position after moving to PerMonitorV2 (#33784)

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## Summary of the Pull Request
Fixes an issue where PowerToys Run can sometimes start up in an
inconvenient position in a multi-monitor / multi-DPI setup.
This commit is contained in:
Ani
2024-07-18 16:16:19 +02:00
committed by GitHub
parent 7d8af7bbbb
commit 78d53ffb10
2 changed files with 41 additions and 45 deletions
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36
src/modules/launcher/PowerLauncher/Helper/WindowsInteropHelper.cs
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@@ -10,7 +10,6 @@ using System.Windows;
using System.Windows.Forms;
using System.Windows.Interop;
using System.Windows.Media;
using Point = System.Windows.Point;
namespace PowerLauncher.Helper
{
@@ -188,30 +187,29 @@ namespace PowerLauncher.Helper
_ = NativeMethods.SetWindowLong(hwnd, GWL_EX_STYLE, NativeMethods.GetWindowLong(hwnd, GWL_EX_STYLE) | WS_EX_TOOLWINDOW);
}
/// <summary>
/// Transforms pixels to Device Independent Pixels used by WPF
/// </summary>
/// <param name="visual">current window, required to get presentation source</param>
/// <param name="unitX">horizontal position in pixels</param>
/// <param name="unitY">vertical position in pixels</param>
/// <returns>point containing device independent pixels</returns>
public static Point TransformPixelsToDIP(Visual visual, double unitX, double unitY)
public static void MoveToScreenCenter(Window window, Screen screen)
{
Matrix matrix;
var source = PresentationSource.FromVisual(visual);
if (source != null)
var workingArea = screen.WorkingArea;
var matrix = GetCompositionTarget(window).TransformFromDevice;
var dpiX = matrix.M11;
var dpiY = matrix.M22;
window.Left = (dpiX * workingArea.Left) + (((dpiX * workingArea.Width) - window.Width) / 2);
window.Top = (dpiY * workingArea.Top) + (((dpiY * workingArea.Height) - window.Height) / 2);
}
private static CompositionTarget GetCompositionTarget(Visual visual)
{
var presentationSource = PresentationSource.FromVisual(visual);
if (presentationSource != null)
{
matrix = source.CompositionTarget.TransformFromDevice;
return presentationSource.CompositionTarget;
}
else
{
using (var src = new HwndSource(default))
{
matrix = src.CompositionTarget.TransformFromDevice;
}
using var hwndSource = new HwndSource(default);
return hwndSource.CompositionTarget;
}
return new Point((int)(matrix.M11 * unitX), (int)(matrix.M22 * unitY));
}
[StructLayout(LayoutKind.Sequential)]