|
public DrawImage ( Image image, |
||
| image | Image | |
| destRect | ||
| srcRect | ||
| graphicsUnit | GraphicsUnit | |
| return | void | |
/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="Graphics"/> object.
/// </summary>
protected override void Render(SvgRenderer renderer)
{
if (!Visible || !Displayable)
{
return;
}
if (Width.Value > 0.0f && Height.Value > 0.0f && this.Href != null)
{
using (Image b = GetImage(this.Href))
{
if (b != null)
{
this.PushTransforms(renderer);
this.SetClip(renderer);
RectangleF srcRect = new RectangleF(0, 0, b.Width, b.Height);
var destRect = new RectangleF(this.Location.ToDeviceValue(),
new SizeF(Width.ToDeviceValue(), Height.ToDeviceValue()));
renderer.DrawImage(b, destRect, srcRect, GraphicsUnit.Pixel);
this.ResetClip(renderer);
this.PopTransforms(renderer);
}
}
// TODO: cache images... will need a shared context for this
// TODO: support preserveAspectRatio, etc
}
}
/// <summary>
/// Renders the <see cref="SvgElement"/> and contents to the specified <see cref="Graphics"/> object.
/// </summary>
protected override void Render(SvgRenderer renderer)
{
if (!Visible || !Displayable)
{
return;
}
if (Width.Value > 0.0f && Height.Value > 0.0f && this.Href != null)
{
using (Image b = GetImage(this.Href))
{
if (b != null)
{
var srcRect = new RectangleF(0, 0, b.Width, b.Height);
var destClip = new RectangleF(this.Location.ToDeviceValue(renderer, this),
new SizeF(Width.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this),
Height.ToDeviceValue(renderer, UnitRenderingType.Vertical, this)));
RectangleF destRect = destClip;
this.PushTransforms(renderer);
renderer.AddClip(new Region(destClip));
this.SetClip(renderer);
if (AspectRatio != null && AspectRatio.Align != SvgPreserveAspectRatio.none)
{
var fScaleX = destClip.Width / srcRect.Width;
var fScaleY = destClip.Height / srcRect.Height;
var xOffset = 0.0f;
var yOffset = 0.0f;
if (AspectRatio.Slice)
{
fScaleX = Math.Max(fScaleX, fScaleY);
fScaleY = Math.Max(fScaleX, fScaleY);
}
else
{
fScaleX = Math.Min(fScaleX, fScaleY);
fScaleY = Math.Min(fScaleX, fScaleY);
}
switch (AspectRatio.Align)
{
case SvgPreserveAspectRatio.xMinYMin:
break;
case SvgPreserveAspectRatio.xMidYMin:
xOffset = (destClip.Width - srcRect.Width * fScaleX) / 2;
break;
case SvgPreserveAspectRatio.xMaxYMin:
xOffset = (destClip.Width - srcRect.Width * fScaleX);
break;
case SvgPreserveAspectRatio.xMinYMid:
yOffset = (destClip.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatio.xMidYMid:
xOffset = (destClip.Width - srcRect.Width * fScaleX) / 2;
yOffset = (destClip.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatio.xMaxYMid:
xOffset = (destClip.Width - srcRect.Width * fScaleX);
yOffset = (destClip.Height - srcRect.Height * fScaleY) / 2;
break;
case SvgPreserveAspectRatio.xMinYMax:
yOffset = (destClip.Height - srcRect.Height * fScaleY);
break;
case SvgPreserveAspectRatio.xMidYMax:
xOffset = (destClip.Width - srcRect.Width * fScaleX) / 2;
yOffset = (destClip.Height - srcRect.Height * fScaleY);
break;
case SvgPreserveAspectRatio.xMaxYMax:
xOffset = (destClip.Width - srcRect.Width * fScaleX);
yOffset = (destClip.Height - srcRect.Height * fScaleY);
break;
}
destRect = new RectangleF(destClip.X + xOffset, destClip.Y + yOffset,
srcRect.Width * fScaleX, srcRect.Height * fScaleY);
}
renderer.DrawImage(b, destRect, srcRect, GraphicsUnit.Pixel);
this.ResetClip(renderer);
this.PopTransforms(renderer);
}
}
// TODO: cache images... will need a shared context for this
// TODO: support preserveAspectRatio, etc
}
}
