C# GradientStopCollection.Freeze方法代码示例

        // *** Private static methods ***
        private static void CreateBrushes()
        {
            // Get the colors for the shadow
            Color shadowColor = Color.FromArgb(128, 0, 0, 0);
            Color transparentColor = Color.FromArgb(16, 0, 0, 0);
            // Create a GradientStopCollection from these
            GradientStopCollection gradient = new GradientStopCollection(2);
            gradient.Add(new GradientStop(shadowColor, 0.5));
            gradient.Add(new GradientStop(transparentColor, 1.0));
            gradient.Freeze();
            // Create the background brush
            backgroundBrush = new SolidColorBrush(shadowColor);
            backgroundBrush.Freeze();
            // Create the LinearGradientBrushes
            rightBrush = new LinearGradientBrush(gradient, new Point(0.0, 0.0), new Point(1.0, 0.0)); rightBrush.Freeze();
            bottomBrush = new LinearGradientBrush(gradient, new Point(0.0, 0.0), new Point(0.0, 1.0)); bottomBrush.Freeze();
            // Create the RadialGradientBrushes
            bottomRightBrush = new RadialGradientBrush(gradient);
            bottomRightBrush.GradientOrigin = new Point(0.0, 0.0);
            bottomRightBrush.Center = new Point(0.0, 0.0);
            bottomRightBrush.RadiusX = 1.0;
            bottomRightBrush.RadiusY = 1.0;
            bottomRightBrush.Freeze();

            topRightBrush = new RadialGradientBrush(gradient);
            topRightBrush.GradientOrigin = new Point(0.0, 1.0);
            topRightBrush.Center = new Point(0.0, 1.0);
            topRightBrush.RadiusX = 1.0;
            topRightBrush.RadiusY = 1.0;
            topRightBrush.Freeze();

            bottomLeftBrush = new RadialGradientBrush(gradient);
            bottomLeftBrush.GradientOrigin = new Point(1.0, 0.0);
            bottomLeftBrush.Center = new Point(1.0, 0.0);
            bottomLeftBrush.RadiusX = 1.0;
            bottomLeftBrush.RadiusY = 1.0;
            bottomLeftBrush.Freeze();
        }

        static GradientStopCollection CreateStops(Color c)
        {
            GradientStopCollection stops = new GradientStopCollection();
            Color stopColor = c;

            stopColor.A = (byte)(.45 * c.A);
            stops.Add(new GradientStop(stopColor, 0));

            stopColor.A = (byte)(.40 * c.A);
            stops.Add(new GradientStop(stopColor, .2));

            stopColor.A = (byte)(.25 * c.A);
            stops.Add(new GradientStop(stopColor, .45));

            stopColor.A = (byte)(.10 * c.A);
            stops.Add(new GradientStop(stopColor, .7));

            stopColor.A = (byte)(.05 * c.A);
            stops.Add(new GradientStop(stopColor, .85));

            stopColor.A = 0;
            stops.Add(new GradientStop(stopColor, 1));

            stops.Freeze();

            return stops;
        }

        // Create common gradient stop collection for gradient brushes
        private static GradientStopCollection CreateStops(Color c, double cornerRadius)
        {
            // Scale stops to lie within 0 and 1
            double gradientScale = 1 / (cornerRadius + ShadowDepth);

            GradientStopCollection gsc = new GradientStopCollection();
            gsc.Add(new GradientStop(c, (0.5 + cornerRadius) * gradientScale));

            // Create gradient stops based on the Win32 dropshadow fall off
            Color stopColor = c;
            stopColor.A = (byte)(.74336 * c.A);
            gsc.Add(new GradientStop(stopColor, (1.5 + cornerRadius) * gradientScale));

            stopColor.A = (byte)(.38053 * c.A);
            gsc.Add(new GradientStop(stopColor, (2.5 + cornerRadius)* gradientScale));

            stopColor.A = (byte)(.12389 * c.A);
            gsc.Add(new GradientStop(stopColor, (3.5 + cornerRadius) * gradientScale));

            stopColor.A = (byte)(.02654 * c.A);
            gsc.Add(new GradientStop(stopColor, (4.5 + cornerRadius) * gradientScale));

            stopColor.A = 0;
            gsc.Add(new GradientStop(stopColor, (5 + cornerRadius) * gradientScale));

            gsc.Freeze();

            return gsc;
        }

 private static GradientStopCollection CreateStops(System.Windows.Media.Color c, double cornerRadius)
 {
     double num = 1.0 / (cornerRadius + 5.0);
     GradientStopCollection stops = new GradientStopCollection {
         new GradientStop(c, (0.5 + cornerRadius) * num)
     };
     System.Windows.Media.Color color = c;
     color.A = (byte)(0.74336 * c.A);
     stops.Add(new GradientStop(color, (1.5 + cornerRadius) * num));
     color.A = (byte)(0.38053 * c.A);
     stops.Add(new GradientStop(color, (2.5 + cornerRadius) * num));
     color.A = (byte)(0.12389 * c.A);
     stops.Add(new GradientStop(color, (3.5 + cornerRadius) * num));
     color.A = (byte)(0.02654 * c.A);
     stops.Add(new GradientStop(color, (4.5 + cornerRadius) * num));
     color.A = 0;
     stops.Add(new GradientStop(color, (5.0 + cornerRadius) * num));
     stops.Freeze();
     return stops;
 }

//.........这里部分代码省略.........
				DockPanel.SetDock(iHeader, Dock.Left);
				switch (player.PlayerType)
				{
					case DominionBase.Players.PlayerType.Human:
						iHeader.Source = (BitmapImage)this.Resources["imHuman"];
						break;

					case DominionBase.Players.PlayerType.Computer:
						iHeader.Source = (BitmapImage)this.Resources["imComputer"];
						break;
				}
				dpHeader.Children.Add(iHeader);
				TextBlock tbHeader = new TextBlock();
				tbHeader.Text = player.Name;
				dpHeader.Children.Add(tbHeader);
				tiPlayer.Header = dpHeader;

				tcAreas.Items.Add(tiPlayer);
				Controls.ucPlayerDisplay ucpdPlayer = new Controls.ucPlayerDisplay();
				tiPlayer.Content = ucpdPlayer;
				ucpdPlayer.IsUIPlayer = (player.PlayerType == DominionBase.Players.PlayerType.Human);
				ucpdPlayer.Player = player;

				PlayerSettings playerSettings = _Settings.PlayerSettings.FirstOrDefault(ps => ps.Name == player.Name);
				if (playerSettings != null)
				{
					ColorHls hlsValue = HLSColor.RgbToHls(playerSettings.UIColor);
					Color cPlayer = HLSColor.HlsToRgb(hlsValue.H, Math.Min(1d, hlsValue.L * 1.125), hlsValue.S * 0.95, hlsValue.A);
					GradientStopCollection gsc = new GradientStopCollection();
					gsc.Add(new GradientStop(cPlayer, 0));
					gsc.Add(new GradientStop(playerSettings.UIColor, 0.25));
					gsc.Add(new GradientStop(playerSettings.UIColor, 0.75));
					gsc.Add(new GradientStop(cPlayer, 1));
					gsc.Freeze();
					tiPlayer.Background = new LinearGradientBrush(gsc, 0);
					//tiPlayer.Background = new SolidColorBrush(playerSettings.UIColor);
					ucpdPlayer.ColorFocus = playerSettings.UIColor;
				}

				ToolTip tt = new System.Windows.Controls.ToolTip();
				Controls.ucPlayerOverview ucpo = new Controls.ucPlayerOverview();
				ucpo.Player = player;
				tt.Content = ucpo;
				ToolTipService.SetToolTip(dpHeader, tt);
				if (Settings.ToolTipShowDuration == ToolTipShowDuration.Off)
					ToolTipService.SetIsEnabled(dpHeader, false);
				else
				{
					ToolTipService.SetIsEnabled(dpHeader, true);
					ToolTipService.SetShowDuration(dpHeader, (int)Settings.ToolTipShowDuration);
				}
				dpHeader.MouseDown += new MouseButtonEventHandler(tiPlayer_MouseDown);
				dpHeader.MouseUp += new MouseButtonEventHandler(tiPlayer_MouseUp);

				player.Revealed.PileChanged += new DominionBase.Piles.Pile.PileChangedEventHandler(Revealed_PileChanged);
				player.BenefitReceiving += new DominionBase.Players.Player.BenefitReceivingEventHandler(player_BenefitReceiving);
				//player.DiscardPile.PileChanged += new DominionBase.Pile.PileChangedEventHandler(DiscardPile_PileChanged);
				player.CardPlaying += new DominionBase.Players.Player.CardPlayingEventHandler(player_CardPlaying);
				player.CardPlayed += new DominionBase.Players.Player.CardPlayedEventHandler(player_CardPlayed);
				player.CardUndoPlaying += new DominionBase.Players.Player.CardUndoPlayingEventHandler(player_CardUndoPlaying);
				player.CardUndoPlayed += new DominionBase.Players.Player.CardUndoPlayedEventHandler(player_CardUndoPlayed);
				player.CardBuying += new DominionBase.Players.Player.CardBuyingEventHandler(player_CardBuying);
				player.CardBought += new DominionBase.Players.Player.CardBoughtEventHandler(player_CardBought);
				player.CardBuyFinished += new DominionBase.Players.Player.CardBuyFinishedEventHandler(player_CardBuyFinished);
				player.CardGaining += new DominionBase.Players.Player.CardGainingEventHandler(player_CardGaining);
				player.CardGainedInto += new DominionBase.Players.Player.CardGainedIntoEventHandler(player_CardGainedInto);

//.........这里部分代码省略.........
				DockPanel.SetDock(iHeader, Dock.Left);
				switch (player.PlayerType)
				{
					case DominionBase.Players.PlayerType.Human:
						iHeader.Source = (BitmapImage)this.Resources["imHuman"];
						break;

					case DominionBase.Players.PlayerType.Computer:
						iHeader.Source = (BitmapImage)this.Resources["imComputer"];
						break;
				}
				dpHeader.Children.Add(iHeader);
				TextBlock tbHeader = new TextBlock();
				tbHeader.Text = player.Name;
				dpHeader.Children.Add(tbHeader);
				tiPlayer.Header = dpHeader;

				tcAreas.Items.Add(tiPlayer);
				Controls.ucPlayerDisplay ucpdPlayer = new Controls.ucPlayerDisplay();
				tiPlayer.Content = ucpdPlayer;
				ucpdPlayer.IsUIPlayer = (player == _Player);
				ucpdPlayer.Player = player;

				PlayerSettings playerSettings = _Settings.PlayerSettings.FirstOrDefault(ps => ps.Name == player.Name);
				if (playerSettings != null)
				{
					ColorHls hlsValue = HLSColor.RgbToHls(playerSettings.UIColor);
					Color cPlayer = HLSColor.HlsToRgb(hlsValue.H, Math.Min(1d, hlsValue.L * 1.125), hlsValue.S * 0.95, hlsValue.A);
					GradientStopCollection gsc = new GradientStopCollection();
					gsc.Add(new GradientStop(cPlayer, 0));
					gsc.Add(new GradientStop(playerSettings.UIColor, 0.25));
					gsc.Add(new GradientStop(playerSettings.UIColor, 0.75));
					gsc.Add(new GradientStop(cPlayer, 1));
					gsc.Freeze();
					tiPlayer.Background = new LinearGradientBrush(gsc, 0);
					//tiPlayer.Background = new SolidColorBrush(playerSettings.UIColor);
					ucpdPlayer.ColorFocus = playerSettings.UIColor;
				}

				ToolTip tt = new System.Windows.Controls.ToolTip();
				Controls.ucPlayerOverview ucpo = new Controls.ucPlayerOverview();
				ucpo.Player = player;
				tt.Content = ucpo;
				ToolTipService.SetToolTip(dpHeader, tt);
				if (Settings.ToolTipShowDuration == ToolTipShowDuration.Off)
					ToolTipService.SetIsEnabled(dpHeader, false);
				else
				{
					ToolTipService.SetIsEnabled(dpHeader, true);
					ToolTipService.SetShowDuration(dpHeader, (int)Settings.ToolTipShowDuration);
				}
				dpHeader.MouseDown += new MouseButtonEventHandler(tiPlayer_MouseDown);
				dpHeader.MouseUp += new MouseButtonEventHandler(tiPlayer_MouseUp);

				player.Revealed.PileChanged += new DominionBase.Piles.Pile.PileChangedEventHandler(Revealed_PileChanged);
				player.BenefitReceiving += new DominionBase.Players.Player.BenefitReceivingEventHandler(player_BenefitReceiving);
				//player.DiscardPile.PileChanged += new DominionBase.Pile.PileChangedEventHandler(DiscardPile_PileChanged);
				player.CardPlaying += new DominionBase.Players.Player.CardPlayingEventHandler(player_CardPlaying);
				player.CardPlayed += new DominionBase.Players.Player.CardPlayedEventHandler(player_CardPlayed);
				player.CardUndoPlaying += new DominionBase.Players.Player.CardUndoPlayingEventHandler(player_CardUndoPlaying);
				player.CardUndoPlayed += new DominionBase.Players.Player.CardUndoPlayedEventHandler(player_CardUndoPlayed);
				player.CardBuying += new DominionBase.Players.Player.CardBuyingEventHandler(player_CardBuying);
				player.CardBought += new DominionBase.Players.Player.CardBoughtEventHandler(player_CardBought);
				player.CardBuyFinished += new DominionBase.Players.Player.CardBuyFinishedEventHandler(player_CardBuyFinished);
				player.CardGaining += new DominionBase.Players.Player.CardGainingEventHandler(player_CardGaining);
				player.CardGainedInto += new DominionBase.Players.Player.CardGainedIntoEventHandler(player_CardGainedInto);

 private GradientStopCollection _getGradientStops(double radius) {
    if (!_gradientStops.ContainsKey(radius)) {
       var stops = new GradientStopCollection();
       var color = Color;
       var delta = 1.0 / (radius + (7.5 - Softness*5.0));
       for (int i=0; i < _gradientOpacities.Length; i++) {
          color.A = (byte)(_gradientOpacities[i] * color.A);
          stops.Add(new GradientStop(color, (_gradientDistribution[i]+radius)*delta));
       }
       stops.Freeze();
       lock (_lock) {
          _gradientStops[radius] = stops;
       }
    }
    return _gradientStops[radius];
 }

        private GradientStopCollection CreateStops(Color c, double cornerRadius)
        {
            double stopPoint = 1.0 / (cornerRadius + ShadowDepth);

            var stops = new GradientStopCollection
            {
                new GradientStop(c, (ShadowDepth + cornerRadius) * stopPoint)
            };

            Color color = c;

            color.A = (byte)(0.74336 * c.A);
            stops.Add(new GradientStop(color, (1.5 + cornerRadius) * stopPoint));

            color.A = (byte)(0.38053 * c.A);
            stops.Add(new GradientStop(color, (2.5 + cornerRadius) * stopPoint));

            color.A = (byte)(0.12389 * c.A);
            stops.Add(new GradientStop(color, (3.5 + cornerRadius) * stopPoint));

            color.A = (byte)(0.02654 * c.A);
            stops.Add(new GradientStop(color, (4.5 + cornerRadius) * stopPoint));

            color.A = 0;
            stops.Add(new GradientStop(color, (5.0 + cornerRadius) * stopPoint));

            stops.Freeze();

            return stops;
        }