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Added Pixel to Device Independent Pixel transformation to WindowIntelopHelper

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MainWindow GetWindowsTop and GetWindowsLeft will use DIP when searching for the center of the screen
This commit is contained in:
Boris Makogonyuk 2015-12-13 04:22:01 +01:00
parent bb9684f7d3
commit 83985aa44c
2 changed files with 38 additions and 21 deletions
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28
Wox/Helper/WindowIntelopHelper.cs
View File

@ -4,6 +4,8 @@ using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Forms;
using System.Windows.Interop;
using System.Windows.Media;
using Point = System.Windows.Point;
namespace Wox.Helper
{
@ -80,6 +82,32 @@ namespace Wox.Helper
SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) & ~WS_SYSMENU);
}
/// <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)
{
Matrix matrix;
var source = PresentationSource.FromVisual(visual);
if (source != null)
{
matrix = source.CompositionTarget.TransformFromDevice;
}
else
{
using (var src = new HwndSource(new HwndSourceParameters()))
{
matrix = src.CompositionTarget.TransformFromDevice;
}
}
return new Point((int) (matrix.M11*unitX), (int) (matrix.M22*unitY));
}
[StructLayout(LayoutKind.Sequential)]
public struct RECT
{

31
Wox/MainWindow.xaml.cs
View File

@ -260,34 +260,21 @@ namespace Wox
private double GetWindowsLeft()
{
var screen = Screen.FromPoint(System.Windows.Forms.Cursor.Position);
if (UserSettingStorage.Instance.RememberLastLaunchLocation)
{
var origScreen = Screen.FromRectangle(new Rectangle((int)Left, (int)Top, (int)ActualWidth, (int)ActualHeight));
var coordX = (Left - origScreen.WorkingArea.Left) / (origScreen.WorkingArea.Width - ActualWidth);
UserSettingStorage.Instance.WindowLeft = (screen.WorkingArea.Width - ActualWidth) * coordX + screen.WorkingArea.Left;
}
else
{
UserSettingStorage.Instance.WindowLeft = (screen.WorkingArea.Width - ActualWidth) / 2 + screen.WorkingArea.Left;
}
if (UserSettingStorage.Instance.RememberLastLaunchLocation) return UserSettingStorage.Instance.WindowLeft;
var screen = Screen.FromPoint(System.Windows.Forms.Cursor.Position);
var dipPoint = WindowIntelopHelper.TransformPixelsToDIP(this, screen.WorkingArea.Width, 0);
UserSettingStorage.Instance.WindowLeft = (dipPoint.X - ActualWidth)/2;
return UserSettingStorage.Instance.WindowLeft;
}
private double GetWindowsTop()
{
if (UserSettingStorage.Instance.RememberLastLaunchLocation) return UserSettingStorage.Instance.WindowTop;
var screen = Screen.FromPoint(System.Windows.Forms.Cursor.Position);
if (UserSettingStorage.Instance.RememberLastLaunchLocation)
{
var origScreen = Screen.FromRectangle(new Rectangle((int)Left, (int)Top, (int)ActualWidth, (int)ActualHeight));
var coordY = (Top - origScreen.WorkingArea.Top) / (origScreen.WorkingArea.Height - ActualHeight);
UserSettingStorage.Instance.WindowTop = (screen.WorkingArea.Height - ActualHeight) * coordY + screen.WorkingArea.Top;
}
else
{
UserSettingStorage.Instance.WindowTop = (screen.WorkingArea.Height - tbQuery.ActualHeight) / 4 + screen.WorkingArea.Top;
}
var dipPoint = WindowIntelopHelper.TransformPixelsToDIP(this, 0, screen.WorkingArea.Height);
UserSettingStorage.Instance.WindowTop = (dipPoint.Y - tbQuery.ActualHeight)/4;
return UserSettingStorage.Instance.WindowTop;
}
@ -534,6 +521,8 @@ namespace Wox
private void HideWox()
{
UserSettingStorage.Instance.WindowLeft = Left;
UserSettingStorage.Instance.WindowTop = Top;
if (IsInContextMenuMode)
{
BackToResultMode();