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Merge pull request #25 from Dirkster99/2ndMonitor_Support
2nd monitor support
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162 changes: 162 additions & 0 deletions
162
source/Components/Xceed.Wpf.AvalonDock/Layout/ILayoutElementForFloatingWindowExtension.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,162 @@ | ||
| namespace Xceed.Wpf.AvalonDock.Layout | ||
| { | ||
| using System.Runtime.InteropServices; | ||
| using System.Windows; | ||
|
|
||
| /// <summary> | ||
| /// SetWindowPlacement won't correct placement for WPF tool windows | ||
| /// | ||
| /// https://stackoverflow.com/questions/19203031/setwindowplacement-wont-correct-placement-for-wpf-tool-windows | ||
| /// </summary> | ||
| public static class ILayoutElementForFloatingWindowExtension | ||
| { | ||
| // RECT structure required by WINDOWPLACEMENT structure | ||
| [StructLayout(LayoutKind.Sequential)] | ||
| internal struct RECT | ||
| { | ||
| public int Left; | ||
| public int Top; | ||
| public int Right; | ||
| public int Bottom; | ||
|
|
||
| public RECT(int left, int top, int right, int bottom) | ||
| { | ||
| this.Left = left; | ||
| this.Top = top; | ||
| this.Right = right; | ||
| this.Bottom = bottom; | ||
| } | ||
| } | ||
|
|
||
| internal static void KeepInsideNearestMonitor(this ILayoutElementForFloatingWindow paneInsideFloatingWindow) | ||
| { | ||
| RECT normalPosition = new RECT(); | ||
| normalPosition.Left = (int)paneInsideFloatingWindow.FloatingLeft; | ||
| normalPosition.Top = (int)paneInsideFloatingWindow.FloatingTop; | ||
| normalPosition.Bottom = normalPosition.Top + (int)paneInsideFloatingWindow.FloatingHeight; | ||
| normalPosition.Right = normalPosition.Left + (int)paneInsideFloatingWindow.FloatingWidth; | ||
|
|
||
| // Are we using only one monitor? | ||
| if (SystemParameters.PrimaryScreenWidth == SystemParameters.VirtualScreenWidth && | ||
| SystemParameters.PrimaryScreenHeight == SystemParameters.VirtualScreenHeight) | ||
| { | ||
| RECT primaryscreen = new RECT(0,0, (int)SystemParameters.PrimaryScreenWidth, (int)SystemParameters.PrimaryScreenHeight); | ||
|
|
||
| if (!RectanglesIntersect(normalPosition, primaryscreen)) | ||
| { | ||
| normalPosition = PlaceOnScreen(primaryscreen, normalPosition); | ||
|
|
||
| paneInsideFloatingWindow.FloatingLeft = normalPosition.Left; | ||
| paneInsideFloatingWindow.FloatingTop = normalPosition.Top; | ||
| paneInsideFloatingWindow.FloatingHeight = normalPosition.Bottom - normalPosition.Top; | ||
| paneInsideFloatingWindow.FloatingWidth = normalPosition.Right - normalPosition.Left; | ||
| } | ||
|
|
||
| return; | ||
| } | ||
| else | ||
| { | ||
| RECT primaryscreen = new RECT(0, 0, (int)SystemParameters.VirtualScreenWidth, (int)SystemParameters.VirtualScreenHeight); | ||
|
|
||
| if (!RectanglesIntersect(normalPosition, primaryscreen)) | ||
| { | ||
| normalPosition = PlaceOnScreen(primaryscreen, normalPosition); | ||
|
|
||
| paneInsideFloatingWindow.FloatingLeft = normalPosition.Left; | ||
| paneInsideFloatingWindow.FloatingTop = normalPosition.Top; | ||
| paneInsideFloatingWindow.FloatingHeight = normalPosition.Bottom - normalPosition.Top; | ||
| paneInsideFloatingWindow.FloatingWidth = normalPosition.Right - normalPosition.Left; | ||
| } | ||
|
|
||
| return; | ||
| } | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Determine whether <paramref name="a"/> and <paramref name="b"/> | ||
| /// have an intersection or not. | ||
| /// </summary> | ||
| /// <param name="a"></param> | ||
| /// <param name="b"></param> | ||
| /// <returns></returns> | ||
| private static bool RectanglesIntersect(RECT a, RECT b) | ||
| { | ||
| if (a.Left > b.Right || a.Right < b.Left) | ||
| { | ||
| return false; | ||
| } | ||
|
|
||
| if (a.Top > b.Bottom || a.Bottom < b.Top) | ||
| { | ||
| return false; | ||
| } | ||
|
|
||
| return true; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Determine the place where <paramref name="windowRect"/> should be placed | ||
| /// inside the <paramref name="monitorRect"/>. | ||
| /// </summary> | ||
| /// <param name="monitorRect"></param> | ||
| /// <param name="windowRect"></param> | ||
| /// <returns></returns> | ||
| private static RECT PlaceOnScreen(RECT monitorRect, RECT windowRect) | ||
| { | ||
| int monitorWidth = monitorRect.Right - monitorRect.Left; | ||
| int monitorHeight = monitorRect.Bottom - monitorRect.Top; | ||
|
|
||
| if (windowRect.Right < monitorRect.Left) | ||
| { | ||
| // Off left side | ||
| int width = windowRect.Right - windowRect.Left; | ||
| if (width > monitorWidth) | ||
| { | ||
| width = monitorWidth; | ||
| } | ||
|
|
||
| windowRect.Left = monitorRect.Left; | ||
| windowRect.Right = windowRect.Left + width; | ||
| } | ||
| else if (windowRect.Left > monitorRect.Right) | ||
| { | ||
| // Off right side | ||
| int width = windowRect.Right - windowRect.Left; | ||
| if (width > monitorWidth) | ||
| { | ||
| width = monitorWidth; | ||
| } | ||
|
|
||
| windowRect.Right = monitorRect.Right; | ||
| windowRect.Left = windowRect.Right - width; | ||
| } | ||
|
|
||
| if (windowRect.Bottom < monitorRect.Top) | ||
| { | ||
| // Off top | ||
| int height = windowRect.Bottom - windowRect.Top; | ||
| if (height > monitorHeight) | ||
| { | ||
| height = monitorHeight; | ||
| } | ||
|
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||
| windowRect.Top = monitorRect.Top; | ||
| windowRect.Bottom = windowRect.Top + height; | ||
| } | ||
| else if (windowRect.Top > monitorRect.Bottom) | ||
| { | ||
| // Off bottom | ||
| int height = windowRect.Bottom - windowRect.Top; | ||
| if (height > monitorHeight) | ||
| { | ||
| height = monitorHeight; | ||
| } | ||
|
|
||
| windowRect.Bottom = monitorRect.Bottom; | ||
| windowRect.Top = windowRect.Bottom - height; | ||
| } | ||
|
|
||
| return windowRect; | ||
| } | ||
| } | ||
| } |
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