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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
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
{
/// <summary>
/// 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.
/// </summary>
public partial class DataGridHeaderBorder
{
#region Theme Rendering
private Thickness? ThemeDefaultPadding
{
get
{
if (Orientation == Orientation.Vertical)
{
return new Thickness(5.0, 4.0, 5.0, 4.0);
}
return null;
}
}
private void RenderTheme(DrawingContext dc)
{
Size size = RenderSize;
bool horizontal = Orientation == Orientation.Horizontal;
bool isClickable = IsClickable && IsEnabled;
bool isHovered = isClickable && IsHovered;
bool isPressed = isClickable && IsPressed;
ListSortDirection? sortDirection = SortDirection;
bool isSorted = sortDirection != null;
bool isSelected = IsSelected;
bool hasBevel = (!isHovered && !isPressed && !isSorted && !isSelected);
EnsureCache((int)AeroFreezables.NumFreezables);
if (horizontal)
{
// When horizontal, rotate the rendering by -90 degrees
Matrix m1 = new Matrix();
m1.RotateAt(-90.0, 0.0, 0.0);
Matrix m2 = new Matrix();
m2.Translate(0.0, size.Height);
MatrixTransform horizontalRotate = new MatrixTransform(m1 * m2);
horizontalRotate.Freeze();
dc.PushTransform(horizontalRotate);
double temp = size.Width;
size.Width = size.Height;
size.Height = temp;
}
if (hasBevel)
{
// This is a highlight that can be drawn by just filling the background with the color.
// It will be seen through the gab between the border and the background.
LinearGradientBrush bevel = (LinearGradientBrush)GetCachedFreezable((int)AeroFreezables.NormalBevel);
if (bevel == null)
{
bevel = new LinearGradientBrush();
bevel.StartPoint = new Point();
bevel.EndPoint = new Point(0.0, 1.0);
bevel.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF), 0.0));
bevel.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF), 0.4));
bevel.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFC, 0xFC, 0xFD), 0.4));
bevel.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFB, 0xFC, 0xFC), 1.0));
bevel.Freeze();
CacheFreezable(bevel, (int)AeroFreezables.NormalBevel);
}
dc.DrawRectangle(bevel, null, new Rect(0.0, 0.0, size.Width, size.Height));
}
// Fill the background
AeroFreezables backgroundType = AeroFreezables.NormalBackground;
if (isPressed)
{
backgroundType = AeroFreezables.PressedBackground;
}
else if (isHovered)
{
backgroundType = AeroFreezables.HoveredBackground;
}
else if (isSorted || isSelected)
{
backgroundType = AeroFreezables.SortedBackground;
}
LinearGradientBrush background = (LinearGradientBrush)GetCachedFreezable((int)backgroundType);
if (background == null)
{
background = new LinearGradientBrush();
background.StartPoint = new Point();
background.EndPoint = new Point(0.0, 1.0);
switch (backgroundType)
{
case AeroFreezables.NormalBackground:
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF), 0.0));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF), 0.4));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xF7, 0xF8, 0xFA), 0.4));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xF1, 0xF2, 0xF4), 1.0));
break;
case AeroFreezables.PressedBackground:
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xBC, 0xE4, 0xF9), 0.0));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xBC, 0xE4, 0xF9), 0.4));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x8D, 0xD6, 0xF7), 0.4));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x8A, 0xD1, 0xF5), 1.0));
break;
case AeroFreezables.HoveredBackground:
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xE3, 0xF7, 0xFF), 0.0));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xE3, 0xF7, 0xFF), 0.4));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xBD, 0xED, 0xFF), 0.4));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xB7, 0xE7, 0xFB), 1.0));
break;
case AeroFreezables.SortedBackground:
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xF2, 0xF9, 0xFC), 0.0));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xF2, 0xF9, 0xFC), 0.4));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xE1, 0xF1, 0xF9), 0.4));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xD8, 0xEC, 0xF6), 1.0));
break;
}
background.Freeze();
CacheFreezable(background, (int)backgroundType);
}
dc.DrawRectangle(background, null, new Rect(0.0, 0.0, size.Width, size.Height));
if (size.Width >= 2.0)
{
// Draw the borders on the sides
AeroFreezables sideType = AeroFreezables.NormalSides;
if (isPressed)
{
sideType = AeroFreezables.PressedSides;
}
else if (isHovered)
{
sideType = AeroFreezables.HoveredSides;
}
else if (isSorted || isSelected)
{
sideType = AeroFreezables.SortedSides;
}
if (SeparatorVisibility == Visibility.Visible)
{
Brush sideBrush;
if (SeparatorBrush != null)
{
sideBrush = SeparatorBrush;
}
else
{
sideBrush = (Brush)GetCachedFreezable((int)sideType);
if (sideBrush == null)
{
LinearGradientBrush lgBrush = null;
if (sideType != AeroFreezables.SortedSides)
{
lgBrush = new LinearGradientBrush();
lgBrush.StartPoint = new Point();
lgBrush.EndPoint = new Point(0.0, 1.0);
sideBrush = lgBrush;
}
switch (sideType)
{
case AeroFreezables.NormalSides:
lgBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xF2, 0xF2, 0xF2), 0.0));
lgBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xEF, 0xEF, 0xEF), 0.4));
lgBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xE7, 0xE8, 0xEA), 0.4));
lgBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xDE, 0xDF, 0xE1), 1.0));
break;
case AeroFreezables.PressedSides:
lgBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x7A, 0x9E, 0xB1), 0.0));
lgBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x7A, 0x9E, 0xB1), 0.4));
lgBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x50, 0x91, 0xAF), 0.4));
lgBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x4D, 0x8D, 0xAD), 1.0));
break;
case AeroFreezables.HoveredSides:
lgBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x88, 0xCB, 0xEB), 0.0));
lgBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x88, 0xCB, 0xEB), 0.4));
lgBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x69, 0xBB, 0xE3), 0.4));
lgBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x69, 0xBB, 0xE3), 1.0));
break;
case AeroFreezables.SortedSides:
sideBrush = new SolidColorBrush(Color.FromArgb(0xFF, 0x96, 0xD9, 0xF9));
break;
}
sideBrush.Freeze();
CacheFreezable(sideBrush, (int)sideType);
}
}
dc.DrawRectangle(sideBrush, null, new Rect(0.0, 0.0, 1.0, Max0(size.Height - 0.95)));
dc.DrawRectangle(sideBrush, null, new Rect(size.Width - 1.0, 0.0, 1.0, Max0(size.Height - 0.95)));
}
}
if (isPressed && (size.Width >= 4.0) && (size.Height >= 4.0))
{
// When pressed, there are added borders on the left and top
LinearGradientBrush topBrush = (LinearGradientBrush)GetCachedFreezable((int)AeroFreezables.PressedTop);
if (topBrush == null)
{
topBrush = new LinearGradientBrush();
topBrush.StartPoint = new Point();
topBrush.EndPoint = new Point(0.0, 1.0);
topBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x86, 0xA3, 0xB2), 0.0));
topBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x86, 0xA3, 0xB2), 0.1));
topBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xAA, 0xCE, 0xE1), 0.9));
topBrush.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xAA, 0xCE, 0xE1), 1.0));
topBrush.Freeze();
CacheFreezable(topBrush, (int)AeroFreezables.PressedTop);
}
dc.DrawRectangle(topBrush, null, new Rect(0.0, 0.0, size.Width, 2.0));
LinearGradientBrush pressedBevel = (LinearGradientBrush)GetCachedFreezable((int)AeroFreezables.PressedBevel);
if (pressedBevel == null)
{
pressedBevel = new LinearGradientBrush();
pressedBevel.StartPoint = new Point();
pressedBevel.EndPoint = new Point(0.0, 1.0);
pressedBevel.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xA2, 0xCB, 0xE0), 0.0));
pressedBevel.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xA2, 0xCB, 0xE0), 0.4));
pressedBevel.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x72, 0xBC, 0xDF), 0.4));
pressedBevel.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x6E, 0xB8, 0xDC), 1.0));
pressedBevel.Freeze();
CacheFreezable(pressedBevel, (int)AeroFreezables.PressedBevel);
}
dc.DrawRectangle(pressedBevel, null, new Rect(1.0, 0.0, 1.0, size.Height - 0.95));
dc.DrawRectangle(pressedBevel, null, new Rect(size.Width - 2.0, 0.0, 1.0, size.Height - 0.95));
}
if (size.Height >= 2.0)
{
// Draw the bottom border
AeroFreezables bottomType = AeroFreezables.NormalBottom;
if (isPressed)
{
bottomType = AeroFreezables.PressedOrHoveredBottom;
}
else if (isHovered)
{
bottomType = AeroFreezables.PressedOrHoveredBottom;
}
else if (isSorted || isSelected)
{
bottomType = AeroFreezables.SortedBottom;
}
SolidColorBrush bottomBrush = (SolidColorBrush)GetCachedFreezable((int)bottomType);
if (bottomBrush == null)
{
switch (bottomType)
{
case AeroFreezables.NormalBottom:
bottomBrush = new SolidColorBrush(Color.FromArgb(0xFF, 0xD5, 0xD5, 0xD5));
break;
case AeroFreezables.PressedOrHoveredBottom:
bottomBrush = new SolidColorBrush(Color.FromArgb(0xFF, 0x93, 0xC9, 0xE3));
break;
case AeroFreezables.SortedBottom:
bottomBrush = new SolidColorBrush(Color.FromArgb(0xFF, 0x96, 0xD9, 0xF9));
break;
}
bottomBrush.Freeze();
CacheFreezable(bottomBrush, (int)bottomType);
}
dc.DrawRectangle(bottomBrush, null, new Rect(0.0, size.Height - 1.0, size.Width, 1.0));
}
if (isSorted && (size.Width > 14.0) && (size.Height > 10.0))
{
// Draw the sort arrow
TranslateTransform positionTransform = new TranslateTransform((size.Width - 8.0) * 0.5, 1.0);
positionTransform.Freeze();
dc.PushTransform(positionTransform);
bool ascending = (sortDirection == ListSortDirection.Ascending);
PathGeometry arrowGeometry = (PathGeometry)GetCachedFreezable(ascending ? (int)AeroFreezables.ArrowUpGeometry : (int)AeroFreezables.ArrowDownGeometry);
if (arrowGeometry == null)
{
arrowGeometry = new PathGeometry();
PathFigure arrowFigure = new PathFigure();
if (ascending)
{
arrowFigure.StartPoint = new Point(0.0, 4.0);
LineSegment line = new LineSegment(new Point(4.0, 0.0), false);
line.Freeze();
arrowFigure.Segments.Add(line);
line = new LineSegment(new Point(8.0, 4.0), false);
line.Freeze();
arrowFigure.Segments.Add(line);
}
else
{
arrowFigure.StartPoint = new Point(0.0, 0.0);
LineSegment line = new LineSegment(new Point(8.0, 0.0), false);
line.Freeze();
arrowFigure.Segments.Add(line);
line = new LineSegment(new Point(4.0, 4.0), false);
line.Freeze();
arrowFigure.Segments.Add(line);
}
arrowFigure.IsClosed = true;
arrowFigure.Freeze();
arrowGeometry.Figures.Add(arrowFigure);
arrowGeometry.Freeze();
CacheFreezable(arrowGeometry, ascending ? (int)AeroFreezables.ArrowUpGeometry : (int)AeroFreezables.ArrowDownGeometry);
}
// Draw two arrows, one inset in the other. This is to achieve a double gradient over both the border and the fill.
LinearGradientBrush arrowBorder = (LinearGradientBrush)GetCachedFreezable((int)AeroFreezables.ArrowBorder);
if (arrowBorder == null)
{
arrowBorder = new LinearGradientBrush();
arrowBorder.StartPoint = new Point();
arrowBorder.EndPoint = new Point(1.0, 1.0);
arrowBorder.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x3C, 0x5E, 0x72), 0.0));
arrowBorder.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x3C, 0x5E, 0x72), 0.1));
arrowBorder.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xC3, 0xE4, 0xF5), 1.0));
arrowBorder.Freeze();
CacheFreezable(arrowBorder, (int)AeroFreezables.ArrowBorder);
}
dc.DrawGeometry(arrowBorder, null, arrowGeometry);
LinearGradientBrush arrowFill = (LinearGradientBrush)GetCachedFreezable((int)AeroFreezables.ArrowFill);
if (arrowFill == null)
{
arrowFill = new LinearGradientBrush();
arrowFill.StartPoint = new Point();
arrowFill.EndPoint = new Point(1.0, 1.0);
arrowFill.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x61, 0x96, 0xB6), 0.0));
arrowFill.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0x61, 0x96, 0xB6), 0.1));
arrowFill.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xCA, 0xE6, 0xF5), 1.0));
arrowFill.Freeze();
CacheFreezable(arrowFill, (int)AeroFreezables.ArrowFill);
}
// Inset the fill arrow inside the border arrow
ScaleTransform arrowScale = (ScaleTransform)GetCachedFreezable((int)AeroFreezables.ArrowFillScale);
if (arrowScale == null)
{
arrowScale = new ScaleTransform(0.75, 0.75, 3.5, 4.0);
arrowScale.Freeze();
CacheFreezable(arrowScale, (int)AeroFreezables.ArrowFillScale);
}
dc.PushTransform(arrowScale);
dc.DrawGeometry(arrowFill, null, arrowGeometry);
dc.Pop(); // Scale Transform
dc.Pop(); // Position Transform
}
if (horizontal)
{
dc.Pop(); // Horizontal Rotate
}
}
private enum AeroFreezables : int
{
NormalBevel,
NormalBackground,
PressedBackground,
HoveredBackground,
SortedBackground,
PressedTop,
NormalSides,
PressedSides,
HoveredSides,
SortedSides,
PressedBevel,
NormalBottom,
PressedOrHoveredBottom,
SortedBottom,
ArrowBorder,
ArrowFill,
ArrowFillScale,
ArrowUpGeometry,
ArrowDownGeometry,
NumFreezables
}
#endregion
}
}
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