/// <summary>
/// Assigns words its width and height
/// </summary>
/// <param name="g">the device to use</param>
internal override void MeasureWordsSize(IGraphics g)
{
if (!_wordsSizeMeasured)
{
if (_imageLoadHandler == null && HtmlContainer.AvoidImagesLateLoading)
{
_imageLoadHandler = new ImageLoadHandler(OnLoadImageComplete);
_imageLoadHandler.LoadImage(HtmlContainer, GetAttribute("src"), HtmlTag != null ? HtmlTag.Attributes : null);
}
MeasureWordSpacing(g);
_wordsSizeMeasured = true;
}
CssLayoutEngine.MeasureImageSize(_imageWord);
}
/// <summary>
/// Create image handler for downloading video image if found and release the WebClient instance used for API call.
/// </summary>
private void HandlePostApiCall(object sender)
{
try
{
if (_videoImageUrl != null)
{
_imageLoadHandler = new ImageLoadHandler(OnLoadImageComplete);
_imageLoadHandler.LoadImage(HtmlContainer, _videoImageUrl, HtmlTag != null ? HtmlTag.Attributes : null);
}
else
{
_imageLoadingComplete = true;
SetErrorBorder();
}
var webClient = (WebClient)sender;
webClient.DownloadStringCompleted -= OnDownloadYoutubeApiCompleted;
webClient.DownloadStringCompleted -= OnDownloadVimeoApiCompleted;
webClient.Dispose();
HtmlContainer.RequestRefresh(IsLayoutRequired());
}
catch
{}
}
/// <summary>
/// Paints the fragment
/// </summary>
/// <param name="g">the device to draw to</param>
protected override void PaintImp(IGraphics g)
{
// load image iff it is in visible rectangle
if (_imageLoadHandler == null)
{
_imageLoadHandler = new ImageLoadHandler(OnLoadImageComplete);
_imageLoadHandler.LoadImage(HtmlContainer, GetAttribute("src"), HtmlTag != null ? HtmlTag.Attributes : null);
}
var rect = CommonUtils.GetFirstValueOrDefault(Rectangles);
PointF offset = HtmlContainer.ScrollOffset;
rect.Offset(offset);
var prevClip = RenderUtils.ClipGraphicsByOverflow(g, this);
PaintBackground(g, rect, true, true);
BordersDrawHandler.DrawBoxBorders(g, this, rect, true, true);
RectangleF r = _imageWord.Rectangle;
r.Offset(offset);
r.Height -= ActualBorderTopWidth + ActualBorderBottomWidth + ActualPaddingTop + ActualPaddingBottom;
r.Y += ActualBorderTopWidth + ActualPaddingTop;
if (_imageWord.Image != null)
{
if (_imageWord.ImageRectangle == Rectangle.Empty)
g.DrawImage(_imageWord.Image, Rectangle.Round(r));
else
g.DrawImage(_imageWord.Image, Rectangle.Round(r), _imageWord.ImageRectangle);
if (_imageWord.Selected)
{
g.FillRectangle(GetSelectionBackBrush(true), _imageWord.Left + offset.X, _imageWord.Top + offset.Y, _imageWord.Width+2, DomUtils.GetCssLineBoxByWord(_imageWord).LineHeight);
}
}
else if (_imageLoadingComplete)
{
if (_imageLoadingComplete && r.Width > 19 && r.Height > 19)
{
RenderUtils.DrawImageErrorIcon(g, r);
}
}
else
{
RenderUtils.DrawImageLoadingIcon(g, r);
if (r.Width > 19 && r.Height > 19)
{
g.DrawRectangle(Pens.LightGray, r.X, r.Y, r.Width, r.Height);
}
}
RenderUtils.ReturnClip(g, prevClip);
}
/// <summary>
/// Assigns words its width and height
/// </summary>
/// <param name="g"></param>
internal virtual void MeasureWordsSize(IGraphics g)
{
if (!_wordsSizeMeasured)
{
if (BackgroundImage != CssConstants.None && _imageLoadHandler == null)
{
_imageLoadHandler = new ImageLoadHandler(OnImageLoadComplete);
_imageLoadHandler.LoadImage(HtmlContainer, BackgroundImage, HtmlTag != null ? HtmlTag.Attributes : null);
}
MeasureWordSpacing(g);
if (Words.Count > 0)
{
foreach (var boxWord in Words)
{
boxWord.Width = boxWord.Text != "\n" ? FontsUtils.MeasureStringWidth(g, boxWord.Text, ActualFont) : 0;
boxWord.Height = FontsUtils.GetFontHeight(ActualFont);
}
}
_wordsSizeMeasured = true;
}
}
