/// <summary>Prepares the image rectangle for drawing.</summary>
/// <remarks>
/// Prepares the image rectangle for drawing. This means that the size and position of the image
/// rectangle will be changed to match the
/// <see cref="BackgroundRepeatValue"/>
/// values for the axes.
/// </remarks>
/// <param name="imageRectangle">the image rectangle which will be changed</param>
/// <param name="backgroundArea">the background available area</param>
/// <returns>the necessary whitespace between backgrounds</returns>
public virtual Point PrepareRectangleToDrawingAndGetWhitespace(Rectangle imageRectangle, Rectangle backgroundArea
, BackgroundSize backgroundSize)
{
if (BackgroundRepeat.BackgroundRepeatValue.ROUND == xAxisRepeat)
{
int ratio = iText.Layout.Properties.BackgroundRepeat.CalculateRatio(backgroundArea.GetWidth(), imageRectangle
.GetWidth());
float initialImageRatio = imageRectangle.GetHeight() / imageRectangle.GetWidth();
imageRectangle.SetWidth(backgroundArea.GetWidth() / ratio);
if (BackgroundRepeat.BackgroundRepeatValue.ROUND != yAxisRepeat && backgroundSize.GetBackgroundHeightSize(
) == null)
{
imageRectangle.MoveUp(imageRectangle.GetHeight() - imageRectangle.GetWidth() * initialImageRatio);
imageRectangle.SetHeight(imageRectangle.GetWidth() * initialImageRatio);
}
}
if (BackgroundRepeat.BackgroundRepeatValue.ROUND == yAxisRepeat)
{
int ratio = iText.Layout.Properties.BackgroundRepeat.CalculateRatio(backgroundArea.GetHeight(), imageRectangle
.GetHeight());
float initialImageRatio = imageRectangle.GetWidth() / imageRectangle.GetHeight();
imageRectangle.MoveUp(imageRectangle.GetHeight() - backgroundArea.GetHeight() / ratio);
imageRectangle.SetHeight(backgroundArea.GetHeight() / ratio);
if (BackgroundRepeat.BackgroundRepeatValue.ROUND != xAxisRepeat && backgroundSize.GetBackgroundWidthSize()
== null)
{
imageRectangle.SetWidth(imageRectangle.GetHeight() * initialImageRatio);
}
}
return(ProcessSpaceValueAndCalculateWhitespace(imageRectangle, backgroundArea));
}
/// <summary>Set the image's backgroundSize.</summary>
/// <param name="backgroundSize">
///
/// <see cref="BackgroundSize"/>
/// to be set.
/// </param>
/// <returns>
/// this
/// <see cref="Builder"/>.
/// </returns>
public virtual BackgroundImage.Builder SetBackgroundSize(BackgroundSize backgroundSize)
{
if (backgroundSize != null)
{
this.backgroundSize = backgroundSize;
}
return(this);
}
public virtual void ConstructorTest()
{
BackgroundSize size = new BackgroundSize();
NUnit.Framework.Assert.IsFalse(size.IsContain());
NUnit.Framework.Assert.IsFalse(size.IsCover());
NUnit.Framework.Assert.IsNull(size.GetBackgroundWidthSize());
NUnit.Framework.Assert.IsNull(size.GetBackgroundHeightSize());
}
public virtual void ClearAndSetToContainTest()
{
BackgroundSize size = new BackgroundSize();
size.SetBackgroundSizeToValues(UnitValue.CreatePointValue(10), UnitValue.CreatePointValue(10));
size.SetBackgroundSizeToContain();
NUnit.Framework.Assert.IsTrue(size.IsContain());
NUnit.Framework.Assert.IsFalse(size.IsCover());
NUnit.Framework.Assert.IsNull(size.GetBackgroundWidthSize());
NUnit.Framework.Assert.IsNull(size.GetBackgroundHeightSize());
}
/// <summary>
/// Creates a new
/// <see cref="BackgroundImage"/>
/// instance.
/// </summary>
/// <param name="image">
/// background-image property.
/// <see cref="iText.Kernel.Pdf.Xobject.PdfXObject"/>
/// instance.
/// </param>
/// <param name="repeat">
/// background-repeat property.
/// <see cref="BackgroundRepeat"/>
/// instance.
/// </param>
/// <param name="position">
/// background-position property.
/// <see cref="BackgroundPosition"/>
/// instance.
/// </param>
/// <param name="backgroundSize">
/// background-size property.
/// <see cref="BackgroundSize"/>
/// instance.
/// </param>
/// <param name="linearGradientBuilder">
/// background-image property.
/// <see cref="iText.Kernel.Colors.Gradients.AbstractLinearGradientBuilder"/>
/// instance.
/// </param>
/// <param name="blendMode">
/// the image's blend mode.
/// <see cref="BlendMode"/>
/// instance.
/// </param>
/// <param name="clip">
/// background-clip property.
/// <see cref="BackgroundBox"/>
/// instance.
/// </param>
/// <param name="origin">
/// background-origin property.
/// <see cref="BackgroundBox"/>
/// instance.
/// </param>
private BackgroundImage(PdfXObject image, BackgroundRepeat repeat, BackgroundPosition position, BackgroundSize
backgroundSize, AbstractLinearGradientBuilder linearGradientBuilder, BlendMode blendMode, BackgroundBox
clip, BackgroundBox origin)
{
this.image = image;
if (repeat != null)
{
this.repeatX = !repeat.IsNoRepeatOnXAxis();
this.repeatY = !repeat.IsNoRepeatOnYAxis();
}
this.repeat = repeat;
this.position = position;
this.backgroundSize = backgroundSize;
this.linearGradientBuilder = linearGradientBuilder;
if (blendMode != null)
{
this.blendMode = blendMode;
}
this.backgroundClip = clip;
this.backgroundOrigin = origin;
}
