49 lines
1.7 KiB
C#
49 lines
1.7 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Text;
|
|
using System.Threading.Tasks;
|
|
using System.Windows;
|
|
using System.Windows.Documents;
|
|
using System.Windows.Media;
|
|
|
|
namespace RainmeterStudio.Editor.SkinDesigner.Controls
|
|
{
|
|
public class HoverAdorner : Adorner
|
|
{
|
|
public HoverAdorner(UIElement adornedElement)
|
|
: base(adornedElement)
|
|
{
|
|
}
|
|
|
|
protected override void OnRender(DrawingContext drawingContext)
|
|
{
|
|
base.OnRender(drawingContext);
|
|
|
|
// Calculate DPI factor
|
|
Matrix matrix = PresentationSource.FromVisual(this).CompositionTarget.TransformToDevice;
|
|
double dpiFactor = 1.0 / matrix.M11;
|
|
|
|
// Rectangle
|
|
Rect rect = new Rect(AdornedElement.DesiredSize);
|
|
Rect selectionRect = new Rect(rect.X - 1, rect.Y - 1, rect.Width + 2, rect.Height + 2);
|
|
|
|
// Create pen
|
|
Pen pen = new Pen(Brushes.Gray, 1 * dpiFactor);
|
|
pen.DashStyle = DashStyles.Dash;
|
|
|
|
// Create a guidelines set for on-pixel drawing
|
|
GuidelineSet guidelines = new GuidelineSet();
|
|
guidelines.GuidelinesX.Add(selectionRect.Left + pen.Thickness / 2);
|
|
guidelines.GuidelinesX.Add(selectionRect.Right + pen.Thickness / 2);
|
|
guidelines.GuidelinesY.Add(selectionRect.Top + pen.Thickness / 2);
|
|
guidelines.GuidelinesY.Add(selectionRect.Bottom + pen.Thickness / 2);
|
|
|
|
// Draw
|
|
drawingContext.PushGuidelineSet(guidelines);
|
|
drawingContext.DrawRectangle(null, pen, selectionRect);
|
|
drawingContext.Pop();
|
|
}
|
|
}
|
|
}
|