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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
{
return null;
}
}
/// <summary>
/// DependencyProperty to assign the ThemeColor to use
/// </summary>
public static readonly DependencyProperty ThemeColorProperty =
DependencyProperty.Register(
"ThemeColor",
typeof(ThemeColor),
typeof(DataGridHeaderBorder),
new FrameworkPropertyMetadata(
ThemeColor.NormalColor,
OnThemeColorChanged),
new ValidateValueCallback(IsValidThemeColor));
/// <summary>
/// The color variation of the button.
/// </summary>
public ThemeColor ThemeColor
{
get { return (ThemeColor)GetValue(ThemeColorProperty); }
set { SetValue(ThemeColorProperty, value); }
}
private static bool IsValidThemeColor(object o)
{
ThemeColor color = (ThemeColor)o;
return color == ThemeColor.NormalColor ||
color == ThemeColor.Homestead ||
color == ThemeColor.Metallic;
}
private static void OnThemeColorChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
// Release all the old resources.
ReleaseCache();
DataGridHeaderBorder border = (DataGridHeaderBorder)d;
// Everything needs to be re-done.
border.InvalidateMeasure();
border.InvalidateArrange();
border.InvalidateVisual();
}
private void RenderTheme(DrawingContext dc)
{
ThemeColor themeColor = ThemeColor;
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;
EnsureCache((int)LunaFreezables.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;
}
// Draw the background
LunaFreezables backgroundType = isPressed ? LunaFreezables.PressedBackground : isHovered ? LunaFreezables.HoveredBackground : LunaFreezables.NormalBackground;
LinearGradientBrush background = (LinearGradientBrush)GetCachedFreezable((int)backgroundType);
if (background == null)
{
background = new LinearGradientBrush();
background.StartPoint = new Point();
background.EndPoint = new Point(0.0, 1.0);
if (isPressed)
{
if (themeColor == ThemeColor.Metallic)
{
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xB9, 0xB9, 0xC8), 0.0));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xEC, 0xEC, 0xF3), 0.1));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xEC, 0xEC, 0xF3), 1.0));
}
else
{
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xC1, 0xC2, 0xB8), 0.0));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xDE, 0xDF, 0xD8), 0.1));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xDE, 0xDF, 0xD8), 1.0));
}
}
else if (isHovered || isSelected)
{
if (themeColor == ThemeColor.Metallic)
{
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFE, 0xFE, 0xFE), 0.0));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFE, 0xFE, 0xFE), 0.85));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xBD, 0xBE, 0xCE), 1.0));
}
else
{
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFA, 0xF9, 0xF4), 0.0));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFA, 0xF9, 0xF4), 0.85));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xEC, 0xE9, 0xD8), 1.0));
}
}
else
{
if (themeColor == ThemeColor.Metallic)
{
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xF9, 0xFA, 0xFD), 0.0));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xF9, 0xFA, 0xFD), 0.85));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xBD, 0xBE, 0xCE), 1.0));
}
else
{
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xEB, 0xEA, 0xDB), 0.0));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xEB, 0xEA, 0xDB), 0.85));
background.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xCB, 0xC7, 0xB8), 1.0));
}
}
background.Freeze();
CacheFreezable(background, (int)backgroundType);
}
dc.DrawRectangle(background, null, new Rect(0.0, 0.0, size.Width, size.Height));
if (isHovered && !isPressed && (size.Width >= 6.0) && (size.Height >= 4.0))
{
// When hovered, there is a colored tab at the bottom
TranslateTransform positionTransform = new TranslateTransform(0.0, size.Height - 3.0);
positionTransform.Freeze();
dc.PushTransform(positionTransform);
PathGeometry tabGeometry = new PathGeometry();
PathFigure tabFigure = new PathFigure();
tabFigure.StartPoint = new Point(0.5, 0.5);
LineSegment line = new LineSegment(new Point(size.Width - 0.5, 0.5), true);
line.Freeze();
tabFigure.Segments.Add(line);
ArcSegment arc = new ArcSegment(new Point(size.Width - 2.5, 2.5), new Size(2.0, 2.0), 90.0, false, SweepDirection.Clockwise, true);
arc.Freeze();
tabFigure.Segments.Add(arc);
line = new LineSegment(new Point(2.5, 2.5), true);
line.Freeze();
tabFigure.Segments.Add(line);
arc = new ArcSegment(new Point(0.5, 0.5), new Size(2.0, 2.0), 90.0, false, SweepDirection.Clockwise, true);
arc.Freeze();
tabFigure.Segments.Add(arc);
tabFigure.IsClosed = true;
tabFigure.Freeze();
tabGeometry.Figures.Add(tabFigure);
tabGeometry.Freeze();
Pen tabStroke = (Pen)GetCachedFreezable((int)LunaFreezables.TabStroke);
if (tabStroke == null)
{
SolidColorBrush tabStrokeBrush = new SolidColorBrush((themeColor == ThemeColor.Homestead) ? Color.FromArgb(0xFF, 0xCF, 0x72, 0x25) : Color.FromArgb(0xFF, 0xF8, 0xA9, 0x00));
tabStrokeBrush.Freeze();
tabStroke = new Pen(tabStrokeBrush, 1.0);
tabStroke.Freeze();
CacheFreezable(tabStroke, (int)LunaFreezables.TabStroke);
}
LinearGradientBrush tabFill = (LinearGradientBrush)GetCachedFreezable((int)LunaFreezables.TabFill);
if (tabFill == null)
{
tabFill = new LinearGradientBrush();
tabFill.StartPoint = new Point();
tabFill.EndPoint = new Point(1.0, 0.0);
if (themeColor == ThemeColor.Homestead)
{
tabFill.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xE3, 0x91, 0x4F), 0.0));
tabFill.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xE3, 0x91, 0x4F), 1.0));
}
else
{
tabFill.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xFC, 0xE0, 0xA6), 0.0));
tabFill.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xF6, 0xC4, 0x56), 0.1));
tabFill.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xF6, 0xC4, 0x56), 0.9));
tabFill.GradientStops.Add(new GradientStop(Color.FromArgb(0xFF, 0xDF, 0x97, 0x00), 1.0));
}
tabFill.Freeze();
CacheFreezable(tabFill, (int)LunaFreezables.TabFill);
}
dc.DrawGeometry(tabFill, tabStroke, tabGeometry);
dc.Pop(); // Translate Transform
}
if (isPressed && (size.Width >= 2.0) && (size.Height >= 2.0))
{
// When pressed, there is a border on the left and bottom
SolidColorBrush border = (SolidColorBrush)GetCachedFreezable((int)LunaFreezables.PressedBorder);
if (border == null)
{
border = new SolidColorBrush((themeColor == ThemeColor.Metallic) ? Color.FromArgb(0xFF, 0x80, 0x80, 0x99) : Color.FromArgb(0xFF, 0xA5, 0xA5, 0x97));
border.Freeze();
CacheFreezable(border, (int)LunaFreezables.PressedBorder);
}
dc.DrawRectangle(border, null, new Rect(0.0, 0.0, 1.0, size.Height));
dc.DrawRectangle(border, null, new Rect(0.0, Max0(size.Height - 1.0), size.Width, 1.0));
}
if (!isPressed && !isHovered && (size.Width >= 4.0))
{
if (SeparatorVisibility == Visibility.Visible)
{
Brush sideBrush;
if (SeparatorBrush != null)
{
sideBrush = SeparatorBrush;
}
else
{
// When not pressed or hovered, draw the resize gripper
LinearGradientBrush gripper = (LinearGradientBrush)GetCachedFreezable((int)(horizontal ? LunaFreezables.HorizontalGripper : LunaFreezables.VerticalGripper));
if (gripper == null)
{
gripper = new LinearGradientBrush();
gripper.StartPoint = new Point();
gripper.EndPoint = new Point(1.0, 0.0);
Color highlight = Color.FromArgb(0xFF, 0xFF, 0xFF, 0xFF);
Color shadow = Color.FromArgb(0xFF, 0xC7, 0xC5, 0xB2);
if (horizontal)
{
gripper.GradientStops.Add(new GradientStop(highlight, 0.0));
gripper.GradientStops.Add(new GradientStop(highlight, 0.25));
gripper.GradientStops.Add(new GradientStop(shadow, 0.75));
gripper.GradientStops.Add(new GradientStop(shadow, 1.0));
}
else
{
gripper.GradientStops.Add(new GradientStop(shadow, 0.0));
gripper.GradientStops.Add(new GradientStop(shadow, 0.25));
gripper.GradientStops.Add(new GradientStop(highlight, 0.75));
gripper.GradientStops.Add(new GradientStop(highlight, 1.0));
}
gripper.Freeze();
CacheFreezable(gripper, (int)(horizontal ? LunaFreezables.HorizontalGripper : LunaFreezables.VerticalGripper));
}
sideBrush = gripper;
}
dc.DrawRectangle(sideBrush, null, new Rect(horizontal ? 0.0 : Max0(size.Width - 2.0), 4.0, 2.0, Max0(size.Height - 8.0)));
}
}
if (isSorted && (size.Width > 14.0) && (size.Height > 10.0))
{
// When 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)LunaFreezables.ArrowUpGeometry : (int)LunaFreezables.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)LunaFreezables.ArrowUpGeometry : (int)LunaFreezables.ArrowDownGeometry);
}
SolidColorBrush arrowFill = (SolidColorBrush)GetCachedFreezable((int)LunaFreezables.ArrowFill);
if (arrowFill == null)
{
arrowFill = new SolidColorBrush(Color.FromArgb(0xFF, 0xAC, 0xA8, 0x99));
arrowFill.Freeze();
CacheFreezable(arrowFill, (int)LunaFreezables.ArrowFill);
}
dc.DrawGeometry(arrowFill, null, arrowGeometry);
dc.Pop(); // Position Transform
}
if (horizontal)
{
dc.Pop(); // Horizontal Rotate
}
}
private enum LunaFreezables
{
NormalBackground,
HoveredBackground,
PressedBackground,
HorizontalGripper,
VerticalGripper,
PressedBorder,
TabGeometry,
TabStroke,
TabFill,
ArrowFill,
ArrowUpGeometry,
ArrowDownGeometry,
NumFreezables
}
#endregion
}
}
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