DefaultTextBlockRenderer.cs

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// Copyright (c) 2014 Silicon Studio Corp. (http://siliconstudio.co.jp)
// This file is distributed under GPL v3. See LICENSE.md for details.
using SiliconStudio.Core;
using SiliconStudio.Core.Mathematics;
using SiliconStudio.Paradox.Graphics;
using SiliconStudio.Paradox.UI.Controls;

namespace SiliconStudio.Paradox.UI.Renderers
{
    /// <summary>
    /// The default renderer for <see cref="TextBlock"/>.
    /// </summary>
    internal class DefaultTextBlockRenderer : ElementRenderer
    {
        public DefaultTextBlockRenderer(IServiceRegistry services)
            : base(services)
        {
        }

        public override void RenderColor(UIElement element, UIRenderingContext context)
        {
            base.RenderColor(element, context);

            var textBlock = (TextBlock)element;

            if (textBlock.Font == null || textBlock.TextToDisplay == null)
                return;
            
            var drawCommand = new SpriteFont.InternalUIDrawCommand
            {
                Color = textBlock.RenderOpacity * textBlock.TextColor,
                DepthBias = context.DepthBias,
                FontScale = element.RealSizeVirtualResolutionRatio,
                FontSize = textBlock.TextSize,
                Batch = Batch,
                SnapText = textBlock.SnapText,
                WorldMatrix = textBlock.WorldMatrixInternal,
                Alignment = textBlock.TextAlignment,
                Size = new Vector2(textBlock.ActualWidth, textBlock.ActualHeight)
            };

            Batch.DrawString(textBlock.Font, textBlock.TextToDisplay, ref drawCommand);
        }
    }
}