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Mouse Jump] - reorganise Helper classes / main form code (microsoft#2…
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src/modules/MouseUtils/MouseJumpUI/Helpers/LayoutHelper.cs
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| @@ -0,0 +1,92 @@ | ||
| // Copyright (c) Microsoft Corporation | ||
| // The Microsoft Corporation licenses this file to you under the MIT license. | ||
| // See the LICENSE file in the project root for more information. | ||
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| using System; | ||
| using System.Drawing; | ||
| using System.Linq; | ||
| using System.Windows.Forms; | ||
| using MouseJumpUI.Models.Drawing; | ||
| using MouseJumpUI.Models.Layout; | ||
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| namespace MouseJumpUI.Helpers; | ||
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| internal static class LayoutHelper | ||
| { | ||
| public static LayoutInfo CalculateLayoutInfo( | ||
| LayoutConfig layoutConfig) | ||
| { | ||
| if (layoutConfig is null) | ||
| { | ||
| throw new ArgumentNullException(nameof(layoutConfig)); | ||
| } | ||
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| var builder = new LayoutInfo.Builder | ||
| { | ||
| LayoutConfig = layoutConfig, | ||
| }; | ||
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| builder.ActivatedScreenBounds = layoutConfig.ScreenBounds[layoutConfig.ActivatedScreenIndex]; | ||
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| // work out the maximum *constrained* form size | ||
| // * can't be bigger than the activated screen | ||
| // * can't be bigger than the max form size | ||
| var maxFormSize = builder.ActivatedScreenBounds.Size | ||
| .Intersect(layoutConfig.MaximumFormSize); | ||
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| // the drawing area for screen images is inside the | ||
| // form border and inside the preview border | ||
| var maxDrawingSize = maxFormSize | ||
| .Shrink(layoutConfig.FormPadding) | ||
| .Shrink(layoutConfig.PreviewPadding); | ||
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| // scale the virtual screen to fit inside the drawing bounds | ||
| var scalingRatio = layoutConfig.VirtualScreenBounds.Size | ||
| .ScaleToFitRatio(maxDrawingSize); | ||
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| // position the drawing bounds inside the preview border | ||
| var drawingBounds = layoutConfig.VirtualScreenBounds.Size | ||
| .ScaleToFit(maxDrawingSize) | ||
| .PlaceAt(layoutConfig.PreviewPadding.Left, layoutConfig.PreviewPadding.Top); | ||
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| // now we know the size of the drawing area we can work out the preview size | ||
| builder.PreviewBounds = drawingBounds.Enlarge(layoutConfig.PreviewPadding); | ||
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| // ... and the form size | ||
| // * center the form to the activated position, but nudge it back | ||
| // inside the visible area of the activated screen if it falls outside | ||
| builder.FormBounds = builder.PreviewBounds | ||
| .Enlarge(layoutConfig.FormPadding) | ||
| .Center(layoutConfig.ActivatedLocation) | ||
| .Clamp(builder.ActivatedScreenBounds); | ||
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| // now calculate the positions of each of the screen images on the preview | ||
| builder.ScreenBounds = layoutConfig.ScreenBounds | ||
| .Select( | ||
| screen => screen | ||
| .Offset(layoutConfig.VirtualScreenBounds.Location.ToSize().Negate()) | ||
| .Scale(scalingRatio) | ||
| .Offset(layoutConfig.PreviewPadding.Left, layoutConfig.PreviewPadding.Top)) | ||
| .ToList(); | ||
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| return builder.Build(); | ||
| } | ||
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| /// <summary> | ||
| /// Resize and position the specified form. | ||
| /// </summary> | ||
| public static void PositionForm( | ||
| Form form, RectangleInfo formBounds) | ||
| { | ||
| // note - do this in two steps rather than "this.Bounds = formBounds" as there | ||
| // appears to be an issue in WinForms with dpi scaling even when using PerMonitorV2, | ||
| // where the form scaling uses either the *primary* screen scaling or the *previous* | ||
| // screen's scaling when the form is moved to a different screen. i've got no idea | ||
| // *why*, but the exact sequence of calls below seems to be a workaround... | ||
| // see https://github.com/mikeclayton/FancyMouse/issues/2 | ||
| var bounds = formBounds.ToRectangle(); | ||
| form.Location = bounds.Location; | ||
| _ = form.PointToScreen(Point.Empty); | ||
| form.Size = bounds.Size; | ||
| } | ||
| } |
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