private IEnumerable<IRenderArgument> DoRenderLine(ITextRender2MeasureMap map, ITextRender2MeasureMapLine line)
{
foreach (var el in line.GetMeasureMap())
{
yield return DoRenderElement(map, line, el);
}
}
/// <summary>
/// Отрисовать.
/// </summary>
/// <param name="map">Карта расположений.</param>
/// <returns>Результат.</returns>
public FrameworkElement Render(ITextRender2MeasureMap map)
{
if (map == null) throw new ArgumentNullException(nameof(map));
var canvas = new Canvas()
{
Height = map.Bounds.Height,
Width = map.Bounds.Width
};
DoRender(canvas, map);
return canvas;
}
private IEnumerable<IRenderArgument> DoRenderLines(ITextRender2MeasureMap map)
{
foreach (var line in map.GetMeasureMapLines())
{
if (map.MaxLines.HasValue)
{
if (line.LineNumber >= map.MaxLines.Value)
{
break;
}
}
foreach (var el in DoRenderLine(map, line))
{
yield return el;
}
}
}
private void SetCachedMap(double width)
{
if (Math.Abs(VirtualCanvas.Width - width) > 0.01)
{
VirtualCanvas.Width = width;
}
if (double.IsNaN(width) || double.IsInfinity(width) || width < 50 || ControlCallback == null)
{
cachedMap = null;
VirtualCanvas.Height = 1;
return;
}
bool needRedraw = false;
if (cachedMap == null)
{
needRedraw = true;
}
else if (Math.Abs(lastWidth - width) > 0.01)
{
needRedraw = true;
}
else if (Math.Abs(ControlCallback.PostFontSize - lastFontSize) > 0.01)
{
needRedraw = true;
}
else if (lastMaxLines != MaxLines)
{
needRedraw = true;
}
else if (lastId != ControlCallback.ProgramId)
{
needRedraw = true;
}
lastWidth = width;
lastFontSize = ControlCallback.PostFontSize;
lastMaxLines = MaxLines;
lastId = ControlCallback.ProgramId;
if (needRedraw)
{
cachedMap = DoMeasure(width);
VirtualCanvas.Height = cachedMap.Bounds.Height;
}
}
/// <summary>
/// Отрисовать.
/// </summary>
/// <param name="map">Карта расположений.</param>
/// <param name="session">Сессия.</param>
/// <param name="region">Регион.</param>
/// <returns>Результат.</returns>
public void Render(ITextRender2MeasureMap map, CanvasDrawingSession session, Rect region)
{
foreach (var line in map.GetMeasureMapLines())
{
if (map.MaxLines.HasValue)
{
if (line.LineNumber >= map.MaxLines.Value)
{
break;
}
}
foreach (var element in line.GetMeasureMap())
{
var drawRect = new Rect(element.Placement, element.Size);
var testRect = drawRect;
testRect.Intersect(region);
if (!testRect.IsEmpty)
{
DrawElement(element, session, region);
}
}
}
}
public void InvalidateRenderedStateAndClear()
{
cachedMap = null;
InvalidateMeasure();
}
private IRenderArgument DoRenderElement(ITextRender2MeasureMap map, ITextRender2MeasureMapLine line, TextRender2MeasureMapElement el)
{
return new NativeRenderArgument(map, line, el, Callback);
}
private void DoRender(Canvas canvas, ITextRender2MeasureMap map)
{
var elements = DoRenderLines(map).ToArray();
//UpdateHelper.UpdateChildren(canvas.Children, elements);
RenderHelper.RenderToCanvas(canvas, elements);
}
public NativeRenderArgument(ITextRender2MeasureMap map, ITextRender2MeasureMapLine line, TextRender2MeasureMapElement el, ITextRender2RenderCallback callback)
{
if (map == null) throw new ArgumentNullException(nameof(map));
if (line == null) throw new ArgumentNullException(nameof(line));
if (callback == null) throw new ArgumentNullException(nameof(callback));
var command = el.Command;
string text;
var textCnt = command.Content as ITextRenderTextContent;
if (textCnt != null)
{
text = textCnt.Text ?? "";
}
else
{
text = "";
}
Text = text;
ElementSize = el.Size;
Placement = el.Placement;
LineHeight = line.Height;
StrikethrougKoef = map.StrikethrougKoef;
if (command.Attributes.Attributes.ContainsKey(CommonTextRenderAttributes.Link))
{
var linkAttribute = command.Attributes.Attributes[CommonTextRenderAttributes.Link] as ITextRenderLinkAttribute;
if (linkAttribute != null)
{
Link = new LinkDataWrapper(linkAttribute);
}
}
Callback = new RenderCallbackWrapper(callback);
TextAttributeFlags flags = 0;
var attr = command.Attributes.Attributes;
if (attr.ContainsKey(CommonTextRenderAttributes.Link))
{
flags = flags | TextAttributeFlags.Link;
}
if (attr.ContainsKey(CommonTextRenderAttributes.Bold))
{
flags = flags | TextAttributeFlags.Bold;
}
if (attr.ContainsKey(CommonTextRenderAttributes.Fixed))
{
flags = flags | TextAttributeFlags.Fixed;
}
if (attr.ContainsKey(CommonTextRenderAttributes.Italic))
{
flags = flags | TextAttributeFlags.Italic;
}
if (attr.ContainsKey(CommonTextRenderAttributes.Overline))
{
flags = flags | TextAttributeFlags.Overline;
}
if (attr.ContainsKey(CommonTextRenderAttributes.Quote))
{
flags = flags | TextAttributeFlags.Quote;
}
if (attr.ContainsKey(CommonTextRenderAttributes.Spoiler))
{
flags = flags | TextAttributeFlags.Spoiler;
}
if (attr.ContainsKey(CommonTextRenderAttributes.Strikethrough))
{
flags = flags | TextAttributeFlags.Strikethrough;
}
if (attr.ContainsKey(CommonTextRenderAttributes.Subscript))
{
flags = flags | TextAttributeFlags.Subscript;
}
if (attr.ContainsKey(CommonTextRenderAttributes.Superscript))
{
flags = flags | TextAttributeFlags.Superscript;
}
if (attr.ContainsKey(CommonTextRenderAttributes.Undeline))
{
flags = flags | TextAttributeFlags.Undeline;
}
Flags = flags;
}
