Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Themes / Classic / Microsoft / Windows / Themes / DataGridHeaderBorder.cs / 1305600 / DataGridHeaderBorder.cs
//---------------------------------------------------------------------------- // // Copyright (C) Microsoft Corporation. All rights reserved. // //--------------------------------------------------------------------------- using System; using System.Collections.Generic; using System.ComponentModel; using System.Diagnostics; using System.Windows; using System.Windows.Controls; using System.Windows.Media; namespace Microsoft.Windows.Themes { ////// A Border used to provide the default look of headers. /// When Background or BorderBrush are set, the rendering will /// revert back to the default Border implementation. /// public partial class DataGridHeaderBorder { #region Theme Rendering private Thickness? ThemeDefaultPadding { get { return null; } } private static readonly DependencyProperty ControlBrushProperty = DependencyProperty.Register("ControlBrush", typeof(Brush), typeof(DataGridHeaderBorder), new FrameworkPropertyMetadata(null, FrameworkPropertyMetadataOptions.AffectsRender)); private Brush EnsureControlBrush() { if (ReadLocalValue(ControlBrushProperty) == DependencyProperty.UnsetValue) { SetResourceReference(ControlBrushProperty, SystemColors.ControlBrushKey); } return (Brush)GetValue(ControlBrushProperty); } private void RenderTheme(DrawingContext dc) { Size size = RenderSize; bool isClickable = IsClickable && IsEnabled; bool isPressed = isClickable && IsPressed; ListSortDirection? sortDirection = SortDirection; bool isSorted = sortDirection != null; bool horizontal = Orientation == Orientation.Horizontal; Brush background = EnsureControlBrush(); Brush light = SystemColors.ControlLightBrush; Brush dark = SystemColors.ControlDarkBrush; bool shouldDrawRight = true; bool shouldDrawBottom = true; bool usingSeparatorBrush = false; Brush darkDarkRight = null; if (!horizontal) { if (SeparatorVisibility == Visibility.Visible && SeparatorBrush != null) { darkDarkRight = SeparatorBrush; usingSeparatorBrush = true; } else { shouldDrawRight = false; } } else { darkDarkRight = SystemColors.ControlDarkDarkBrush; } Brush darkDarkBottom = null; if (horizontal) { if (SeparatorVisibility == Visibility.Visible && SeparatorBrush != null) { darkDarkBottom = SeparatorBrush; usingSeparatorBrush = true; } else { shouldDrawBottom = false; } } else { darkDarkBottom = SystemColors.ControlDarkDarkBrush; } EnsureCache((int)ClassicFreezables.NumFreezables); // Draw the background dc.DrawRectangle(background, null, new Rect(0.0, 0.0, size.Width, size.Height)); if ((size.Width > 3.0) && (size.Height > 3.0)) { // Draw the border if (isPressed) { dc.DrawRectangle(dark, null, new Rect(0.0, 0.0, size.Width, 1.0)); dc.DrawRectangle(dark, null, new Rect(0.0, 0.0, 1.0, size.Height)); dc.DrawRectangle(dark, null, new Rect(0.0, Max0(size.Height - 1.0), size.Width, 1.0)); dc.DrawRectangle(dark, null, new Rect(Max0(size.Width - 1.0), 0.0, 1.0, size.Height)); } else { dc.DrawRectangle(light, null, new Rect(0.0, 0.0, 1.0, Max0(size.Height - 1.0))); dc.DrawRectangle(light, null, new Rect(0.0, 0.0, Max0(size.Width - 1.0), 1.0)); if (shouldDrawRight) { if (!usingSeparatorBrush) { dc.DrawRectangle(dark, null, new Rect(Max0(size.Width - 2.0), 1.0, 1.0, Max0(size.Height - 2.0))); } dc.DrawRectangle(darkDarkRight, null, new Rect(Max0(size.Width - 1.0), 0.0, 1.0, size.Height)); } if (shouldDrawBottom) { if (!usingSeparatorBrush) { dc.DrawRectangle(dark, null, new Rect(1.0, Max0(size.Height - 2.0), Max0(size.Width - 2.0), 1.0)); } dc.DrawRectangle(darkDarkBottom, null, new Rect(0.0, Max0(size.Height - 1.0), size.Width, 1.0)); } } } if (isSorted && (size.Width > 14.0) && (size.Height > 10.0)) { // If sorted, draw an arrow on the right TranslateTransform positionTransform = new TranslateTransform(size.Width - 15.0, (size.Height - 5.0) * 0.5); positionTransform.Freeze(); dc.PushTransform(positionTransform); bool ascending = (sortDirection == ListSortDirection.Ascending); PathGeometry arrowGeometry = (PathGeometry)GetCachedFreezable(ascending ? (int)ClassicFreezables.ArrowUpGeometry : (int)ClassicFreezables.ArrowDownGeometry); if (arrowGeometry == null) { arrowGeometry = new PathGeometry(); PathFigure arrowFigure = new PathFigure(); if (ascending) { arrowFigure.StartPoint = new Point(0.0, 5.0); LineSegment line = new LineSegment(new Point(5.0, 0.0), false); line.Freeze(); arrowFigure.Segments.Add(line); line = new LineSegment(new Point(10.0, 5.0), false); line.Freeze(); arrowFigure.Segments.Add(line); } else { arrowFigure.StartPoint = new Point(0.0, 0.0); LineSegment line = new LineSegment(new Point(10.0, 0.0), false); line.Freeze(); arrowFigure.Segments.Add(line); line = new LineSegment(new Point(5.0, 5.0), false); line.Freeze(); arrowFigure.Segments.Add(line); } arrowFigure.IsClosed = true; arrowFigure.Freeze(); arrowGeometry.Figures.Add(arrowFigure); arrowGeometry.Freeze(); CacheFreezable(arrowGeometry, ascending ? (int)ClassicFreezables.ArrowUpGeometry : (int)ClassicFreezables.ArrowDownGeometry); } dc.DrawGeometry(SystemColors.GrayTextBrush, null, arrowGeometry); dc.Pop(); // Position Transform } } private enum ClassicFreezables { ArrowUpGeometry, ArrowDownGeometry, NumFreezables } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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