/// <summary>
/// Draw the background image at the required location repeating it over the X and Y axis.<br/>
/// Adjust location to left-top if starting location doesn't include all the range (adjusted to center or bottom/right).
/// </summary>
private static void DrawRepeat(RGraphics g, ImageLoadHandler imageLoadHandler, RRect rectangle, RRect srcRect, RRect destRect, RSize imgSize)
{
while (destRect.X > rectangle.X)
destRect.X -= imgSize.Width;
while (destRect.Y > rectangle.Y)
destRect.Y -= imgSize.Height;
using (var brush = g.GetTextureBrush(imageLoadHandler.Image, srcRect, destRect.Location))
{
g.DrawRectangle(brush, rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height);
}
}
/// <summary>
/// Paints the fragment
/// </summary>
/// <param name="g">the device to draw to</param>
protected override void PaintImp(RGraphics g)
{
var offset = HtmlContainer != null ? HtmlContainer.ScrollOffset : RPoint.Empty;
var rect = new RRect(Bounds.X + offset.X, Bounds.Y + offset.Y, Bounds.Width, Bounds.Height);
if (rect.Height > 2 && RenderUtils.IsColorVisible(ActualBackgroundColor))
{
g.DrawRectangle(g.GetSolidBrush(ActualBackgroundColor), rect.X, rect.Y, rect.Width, rect.Height);
}
var b1 = g.GetSolidBrush(ActualBorderTopColor);
BordersDrawHandler.DrawBorder(Border.Top, g, this, b1, rect);
if (rect.Height > 1)
{
var b2 = g.GetSolidBrush(ActualBorderLeftColor);
BordersDrawHandler.DrawBorder(Border.Left, g, this, b2, rect);
var b3 = g.GetSolidBrush(ActualBorderRightColor);
BordersDrawHandler.DrawBorder(Border.Right, g, this, b3, rect);
var b4 = g.GetSolidBrush(ActualBorderBottomColor);
BordersDrawHandler.DrawBorder(Border.Bottom, g, this, b4, rect);
}
}
/// <summary>
/// Paint all the words in the box.
/// </summary>
/// <param name="g">the device to draw into</param>
/// <param name="offset">the current scroll offset to offset the words</param>
private void PaintWords(RGraphics g, RPoint offset)
{
if (Width.Length > 0)
{
var isRtl = Direction == CssConstants.Rtl;
foreach (var word in Words)
{
if (!word.IsLineBreak)
{
var wordPoint = new RPoint(word.Left + offset.X, word.Top + offset.Y);
if (word.Selected)
{
// handle paint selected word background and with partial word selection
var wordLine = DomUtils.GetCssLineBoxByWord(word);
var left = word.SelectedStartOffset > -1 ? word.SelectedStartOffset : (wordLine.Words[0] != word && word.HasSpaceBefore ? -ActualWordSpacing : 0);
var padWordRight = word.HasSpaceAfter && !wordLine.IsLastSelectedWord(word);
var width = word.SelectedEndOffset > -1 ? word.SelectedEndOffset : word.Width + (padWordRight ? ActualWordSpacing : 0);
var rect = new RRect(word.Left + offset.X + left, word.Top + offset.Y, width - left, wordLine.LineHeight);
g.DrawRectangle(GetSelectionBackBrush(g, false), rect.X, rect.Y, rect.Width, rect.Height);
if (HtmlContainer.SelectionForeColor != RColor.Empty && (word.SelectedStartOffset > 0 || word.SelectedEndIndexOffset > -1))
{
g.PushClipExclude(rect);
g.DrawString(word.Text, ActualFont, ActualColor, wordPoint, new RSize(word.Width, word.Height), isRtl);
g.PopClip();
g.PushClip(rect);
g.DrawString(word.Text, ActualFont, GetSelectionForeBrush(), wordPoint, new RSize(word.Width, word.Height), isRtl);
g.PopClip();
}
else
{
g.DrawString(word.Text, ActualFont, GetSelectionForeBrush(), wordPoint, new RSize(word.Width, word.Height), isRtl);
}
}
else
{
// g.DrawRectangle(HtmlContainer.Adapter.GetPen(RColor.Black), wordPoint.X, wordPoint.Y, word.Width - 1, word.Height - 1);
g.DrawString(word.Text, ActualFont, ActualColor, wordPoint, new RSize(word.Width, word.Height), isRtl);
}
}
}
}
}
/// <summary>
/// Paints the fragment
/// </summary>
/// <param name="g">the device to draw to</param>
protected override void PaintImp(RGraphics g)
{
// load image iff it is in visible rectangle
if (_imageLoadHandler == null)
{
_imageLoadHandler = new ImageLoadHandler(HtmlContainer, OnLoadImageComplete);
_imageLoadHandler.LoadImage(GetAttribute("src"), HtmlTag != null ? HtmlTag.Attributes : null);
}
var rect = CommonUtils.GetFirstValueOrDefault(Rectangles);
RPoint offset = HtmlContainer.ScrollOffset;
rect.Offset(offset);
var clipped = RenderUtils.ClipGraphicsByOverflow(g, this);
PaintBackground(g, rect, true, true);
BordersDrawHandler.DrawBoxBorders(g, this, rect, true, true);
RRect r = _imageWord.Rectangle;
r.Offset(offset);
r.Height -= ActualBorderTopWidth + ActualBorderBottomWidth + ActualPaddingTop + ActualPaddingBottom;
r.Y += ActualBorderTopWidth + ActualPaddingTop;
r.X = Math.Floor(r.X);
r.Y = Math.Floor(r.Y);
if (_imageWord.Image != null)
{
if (r.Width > 0 && r.Height > 0)
{
if (_imageWord.ImageRectangle == RRect.Empty)
g.DrawImage(_imageWord.Image, r);
else
g.DrawImage(_imageWord.Image, r, _imageWord.ImageRectangle);
if (_imageWord.Selected)
{
g.DrawRectangle(GetSelectionBackBrush(g, 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, HtmlContainer, r);
}
}
else
{
RenderUtils.DrawImageLoadingIcon(g, HtmlContainer, r);
if (r.Width > 19 && r.Height > 19)
{
g.DrawRectangle(g.GetPen(RColor.LightGray), r.X, r.Y, r.Width, r.Height);
}
}
if (clipped)
g.PopClip();
}
/// <summary>
/// Paints the background of the box
/// </summary>
/// <param name="g">the device to draw into</param>
/// <param name="rect">the bounding rectangle to draw in</param>
/// <param name="isFirst">is it the first rectangle of the element</param>
/// <param name="isLast">is it the last rectangle of the element</param>
protected void PaintBackground(RGraphics g, RRect rect, bool isFirst, bool isLast)
{
if (rect.Width > 0 && rect.Height > 0)
{
RBrush brush = null;
if (BackgroundGradient != CssConstants.None)
{
brush = g.GetLinearGradientBrush(rect, ActualBackgroundColor, ActualBackgroundGradient, ActualBackgroundGradientAngle);
}
else if (RenderUtils.IsColorVisible(ActualBackgroundColor))
{
brush = g.GetSolidBrush(ActualBackgroundColor);
}
if (brush != null)
{
// TODO:a handle it correctly (tables background)
// if (isLast)
// rectangle.Width -= ActualWordSpacing + CssUtils.GetWordEndWhitespace(ActualFont);
RGraphicsPath roundrect = null;
if (IsRounded)
{
roundrect = RenderUtils.GetRoundRect(g, rect, ActualCornerNw, ActualCornerNe, ActualCornerSe, ActualCornerSw);
}
Object prevMode = null;
if (HtmlContainer != null && !HtmlContainer.AvoidGeometryAntialias && IsRounded)
{
prevMode = g.SetAntiAliasSmoothingMode();
}
if (roundrect != null)
{
g.DrawPath(brush, roundrect);
}
else
{
g.DrawRectangle(brush, Math.Ceiling(rect.X), Math.Ceiling(rect.Y), rect.Width, rect.Height);
}
g.ReturnPreviousSmoothingMode(prevMode);
if (roundrect != null)
roundrect.Dispose();
brush.Dispose();
}
if (_imageLoadHandler != null && _imageLoadHandler.Image != null && isFirst)
{
BackgroundImageDrawHandler.DrawBackgroundImage(g, this, _imageLoadHandler, rect);
}
}
}
/// <summary>
/// Draw image failed to load icon.
/// </summary>
/// <param name="g">the device to draw into</param>
/// <param name="htmlContainer"></param>
/// <param name="r">the rectangle to draw icon in</param>
public static void DrawImageErrorIcon(RGraphics g, HtmlContainerInt htmlContainer, RRect r)
{
g.DrawRectangle(g.GetPen(RColor.LightGray), r.Left + 2, r.Top + 2, 15, 15);
var image = htmlContainer.Adapter.GetLoadingFailedImage();
g.DrawImage(image, new RRect(r.Left + 3, r.Top + 3, image.Width, image.Height));
}
/// <summary>
/// Draw play over the iframe if we found link url.
/// </summary>
private void DrawPlay(RGraphics g, RRect rect)
{
if (_isVideo && _imageWord.Width > 70 && _imageWord.Height > 50)
{
var prevMode = g.SetAntiAliasSmoothingMode();
var size = new RSize(60, 40);
var left = rect.Left + (rect.Width - size.Width) / 2;
var top = rect.Top + (rect.Height - size.Height) / 2;
g.DrawRectangle(g.GetSolidBrush(RColor.FromArgb(160, 0, 0, 0)), left, top, size.Width, size.Height);
RPoint[] points =
{
new RPoint(left + size.Width / 3f + 1,top + 3 * size.Height / 4f),
new RPoint(left + size.Width / 3f + 1, top + size.Height / 4f),
new RPoint(left + 2 * size.Width / 3f + 1, top + size.Height / 2f)
};
g.DrawPolygon(g.GetSolidBrush(RColor.White), points);
g.ReturnPreviousSmoothingMode(prevMode);
}
}
/// <summary>
/// Draw video title on top of the iframe if found.
/// </summary>
private void DrawTitle(RGraphics g, RRect rect)
{
if (_videoTitle != null && _imageWord.Width > 40 && _imageWord.Height > 40)
{
var font = HtmlContainer.Adapter.GetFont("Arial", 9f, RFontStyle.Regular);
g.DrawRectangle(g.GetSolidBrush(RColor.FromArgb(160, 0, 0, 0)), rect.Left, rect.Top, rect.Width, ActualFont.Height + 7);
var titleRect = new RRect(rect.Left + 3, rect.Top + 3, rect.Width - 6, rect.Height - 6);
g.DrawString(_videoTitle, font, RColor.WhiteSmoke, titleRect.Location, RSize.Empty, false);
}
}
/// <summary>
/// Draw video image over the iframe if found.
/// </summary>
private void DrawImage(RGraphics g, RPoint offset, RRect rect)
{
if (_imageWord.Image != null)
{
if (rect.Width > 0 && rect.Height > 0)
{
if (_imageWord.ImageRectangle == RRect.Empty)
g.DrawImage(_imageWord.Image, rect);
else
g.DrawImage(_imageWord.Image, rect, _imageWord.ImageRectangle);
if (_imageWord.Selected)
{
g.DrawRectangle(GetSelectionBackBrush(g, true), _imageWord.Left + offset.X, _imageWord.Top + offset.Y, _imageWord.Width + 2, DomUtils.GetCssLineBoxByWord(_imageWord).LineHeight);
}
}
}
else if (_isVideo && !_imageLoadingComplete)
{
RenderUtils.DrawImageLoadingIcon(g, HtmlContainer, rect);
if (rect.Width > 19 && rect.Height > 19)
{
g.DrawRectangle(g.GetPen(RColor.LightGray), rect.X, rect.Y, rect.Width, rect.Height);
}
}
}
