/// <summary>
/// This method tries to calculate min-max-width of rotated element using heuristics
/// of
/// <see cref="iText.Layout.Minmaxwidth.RotationMinMaxWidth.Calculate(double, double, iText.Layout.Minmaxwidth.MinMaxWidth)
/// "/>.
/// </summary>
/// <remarks>
/// This method tries to calculate min-max-width of rotated element using heuristics
/// of
/// <see cref="iText.Layout.Minmaxwidth.RotationMinMaxWidth.Calculate(double, double, iText.Layout.Minmaxwidth.MinMaxWidth)
/// "/>.
/// This method may call
/// <see cref="IRenderer.Layout(iText.Layout.Layout.LayoutContext)"/>
/// once in best case
/// (if the width is set on element, or if we are really lucky) and three times in worst case.
/// </remarks>
/// <param name="minMaxWidth">the minMaxWidth of NOT rotated renderer</param>
/// <param name="renderer">the actual renderer</param>
/// <returns>minMaxWidth of rotated renderer or original value in case rotated value can not be calculated, or renderer isn't rotated.
/// </returns>
public static MinMaxWidth CountRotationMinMaxWidth(MinMaxWidth minMaxWidth, AbstractRenderer renderer)
{
RotationUtils.PropertiesBackup backup = new RotationUtils.PropertiesBackup(renderer);
float?rotation = backup.StoreFloatProperty(Property.ROTATION_ANGLE);
if (rotation != null)
{
float angle = (float)rotation;
//This width results in more accurate values for min-width calculations.
float layoutWidth = minMaxWidth.GetMaxWidth() + MinMaxWidthUtils.GetEps();
LayoutResult layoutResult = renderer.Layout(new LayoutContext(new LayoutArea(1, new Rectangle(layoutWidth,
AbstractRenderer.INF))));
if (layoutResult.GetOccupiedArea() != null)
{
Rectangle layoutBBox = layoutResult.GetOccupiedArea().GetBBox();
if (MinMaxWidthUtils.IsEqual(minMaxWidth.GetMinWidth(), minMaxWidth.GetMaxWidth()))
{
backup.RestoreProperty(Property.ROTATION_ANGLE);
float rotatedWidth = (float)RotationMinMaxWidth.CalculateRotatedWidth(layoutBBox, angle);
return(new MinMaxWidth(rotatedWidth, rotatedWidth, 0));
}
double area = layoutResult.GetOccupiedArea().GetBBox().GetWidth() * layoutResult.GetOccupiedArea().GetBBox
().GetHeight();
RotationMinMaxWidth rotationMinMaxWidth = RotationMinMaxWidth.Calculate(angle, area, minMaxWidth);
float?rotatedMinWidth = GetLayoutRotatedWidth(renderer, (float)rotationMinMaxWidth.GetMinWidthOrigin(), layoutBBox
, angle);
if (rotatedMinWidth != null)
{
if (rotatedMinWidth > rotationMinMaxWidth.GetMaxWidth())
{
rotationMinMaxWidth.SetChildrenMinWidth((float)rotatedMinWidth);
float?rotatedMaxWidth = GetLayoutRotatedWidth(renderer, (float)rotationMinMaxWidth.GetMaxWidthOrigin(), layoutBBox
, angle);
if (rotatedMaxWidth != null && rotatedMaxWidth > rotatedMinWidth)
{
rotationMinMaxWidth.SetChildrenMaxWidth((float)rotatedMaxWidth);
}
else
{
rotationMinMaxWidth.SetChildrenMaxWidth((float)rotatedMinWidth);
}
}
else
{
rotationMinMaxWidth.SetChildrenMinWidth((float)rotatedMinWidth);
}
backup.RestoreProperty(Property.ROTATION_ANGLE);
return(rotationMinMaxWidth);
}
}
}
backup.RestoreProperty(Property.ROTATION_ANGLE);
return(minMaxWidth);
}
public WidthDimensionContainer(CssContextNode node, float maxWidth, IRenderer renderer, float additionalWidthFix
)
{
String width = node.GetStyles().Get(CssConstants.WIDTH);
if (width != null && !width.Equals(CssConstants.AUTO))
{
dimension = ParseDimension(node, width, maxWidth, additionalWidthFix);
}
minDimension = GetMinWidth(node, maxWidth, additionalWidthFix);
maxDimension = GetMaxWidth(node, maxWidth, additionalWidthFix);
if (!IsAutoDimension())
{
maxContentDimension = dimension;
maxContentDimension = dimension;
}
else
{
if (renderer is BlockRenderer)
{
MinMaxWidth minMaxWidth = ((BlockRenderer)renderer).GetMinMaxWidth();
maxContentDimension = minMaxWidth.GetMaxWidth();
minContentDimension = minMaxWidth.GetMinWidth();
}
}
}
public WidthDimensionContainer(CssContextNode node, float maxWidth, IRenderer renderer, float additionalWidthFix
)
{
String width = node.GetStyles().Get(CssConstants.WIDTH);
if (width != null && !CssConstants.AUTO.Equals(width))
{
dimension = ParseDimension(node, width, maxWidth, additionalWidthFix);
}
minDimension = GetMinWidth(node, maxWidth, additionalWidthFix);
maxDimension = GetMaxWidth(node, maxWidth, additionalWidthFix);
if (!IsAutoDimension())
{
// According to point 3 of paragraph "5.3.2.3. Handling min-width and max-width" of the specification
// maxContentDimension and minContentDimension will always be equal
maxContentDimension = dimension;
minContentDimension = dimension;
}
else
{
if (renderer is BlockRenderer)
{
MinMaxWidth minMaxWidth = ((BlockRenderer)renderer).GetMinMaxWidth();
maxContentDimension = minMaxWidth.GetMaxWidth();
minContentDimension = minMaxWidth.GetMinWidth();
}
}
}
internal static float?AdjustFloatedBlockLayoutBox(AbstractRenderer renderer, Rectangle parentBBox, float?
blockWidth, IList <Rectangle> floatRendererAreas, FloatPropertyValue?floatPropertyValue, OverflowPropertyValue?
overflowX)
{
renderer.SetProperty(Property.HORIZONTAL_ALIGNMENT, null);
float floatElemWidth;
bool overflowFit = AbstractRenderer.IsOverflowFit(overflowX);
if (blockWidth != null)
{
floatElemWidth = (float)blockWidth + AbstractRenderer.CalculateAdditionalWidth(renderer);
if (overflowFit && floatElemWidth > parentBBox.GetWidth())
{
floatElemWidth = parentBBox.GetWidth();
}
}
else
{
MinMaxWidth minMaxWidth = CalculateMinMaxWidthForFloat(renderer, floatPropertyValue);
float maxWidth = minMaxWidth.GetMaxWidth();
if (maxWidth > parentBBox.GetWidth())
{
maxWidth = parentBBox.GetWidth();
}
if (!overflowFit && minMaxWidth.GetMinWidth() > parentBBox.GetWidth())
{
maxWidth = minMaxWidth.GetMinWidth();
}
floatElemWidth = maxWidth + AbstractRenderer.EPS;
blockWidth = maxWidth - minMaxWidth.GetAdditionalWidth() + AbstractRenderer.EPS;
}
AdjustBlockAreaAccordingToFloatRenderers(floatRendererAreas, parentBBox, floatElemWidth, FloatPropertyValue
.LEFT.Equals(floatPropertyValue));
return(blockWidth);
}
public virtual void DivWithRotatedPercentImage()
{
String outFileName = destinationFolder + "divRotatedPercentImage.pdf";
String cmpFileName = sourceFolder + "cmp_divRotatedPercentImage.pdf";
PdfDocument pdfDocument = new PdfDocument(new PdfWriter(outFileName));
Document doc = new Document(pdfDocument);
PdfImageXObject imageXObject = new PdfImageXObject(ImageDataFactory.Create(sourceFolder + "itis.jpg"));
iText.Layout.Element.Image img = new iText.Layout.Element.Image(imageXObject).SetRotationAngle(Math.PI * 3
/ 8);
Div d = new Div().Add(img).SetBorder(new SolidBorder(ColorConstants.BLUE, 2f)).SetMarginBottom(10);
iText.Layout.Element.Image imgPercent = new iText.Layout.Element.Image(imageXObject).SetWidth(UnitValue.CreatePercentValue
(50)).SetRotationAngle(Math.PI * 3 / 8);
Div dPercent = new Div().Add(imgPercent).SetBorder(new SolidBorder(ColorConstants.BLUE, 2f));
MinMaxWidth result = ((AbstractRenderer)d.CreateRendererSubTree().SetParent(doc.GetRenderer())).GetMinMaxWidth
();
d.SetWidth(ToEffectiveWidth(d, result.GetMinWidth()));
MinMaxWidth resultPercent = ((AbstractRenderer)dPercent.CreateRendererSubTree().SetParent(doc.GetRenderer(
))).GetMinMaxWidth();
dPercent.SetWidth(ToEffectiveWidth(dPercent, resultPercent.GetMaxWidth()));
doc.Add(d);
doc.Add(dPercent);
doc.Close();
NUnit.Framework.Assert.IsNull(new CompareTool().CompareByContent(outFileName, cmpFileName, destinationFolder
, "diff"));
}
public virtual void CalculateColumnWidthsNotPointValue()
{
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(new ByteArrayOutputStream()));
Document doc = new Document(pdfDoc);
Rectangle layoutBox = new Rectangle(0, 0, 1000, 100);
Table table = new Table(UnitValue.CreatePercentArray(new float[] { 10, 10, 80 }));
// Set margins and paddings in percents, which is not expected
table.SetProperty(Property.MARGIN_RIGHT, UnitValue.CreatePercentValue(7));
table.SetProperty(Property.MARGIN_LEFT, UnitValue.CreatePercentValue(7));
table.SetProperty(Property.PADDING_RIGHT, UnitValue.CreatePercentValue(7));
table.SetProperty(Property.PADDING_LEFT, UnitValue.CreatePercentValue(7));
// Fill the table somehow. The layout area is wide enough to calculate the widths as expected
for (int i = 0; i < 3; i++)
{
table.AddCell("Hello");
}
// Create a TableRenderer, the instance of which will be used to test the application of margins and paddings
TableRenderer tableRenderer = (TableRenderer)table.CreateRendererSubTree().SetParent(doc.GetRenderer());
tableRenderer.bordersHandler = (TableBorders) new SeparatedTableBorders(tableRenderer.rows, 3, tableRenderer
.GetBorders(), 0);
tableRenderer.ApplyMarginsAndPaddingsAndCalculateColumnWidths(layoutBox);
// Specify that the render is not original in order not to recalculate the column widths
tableRenderer.isOriginalNonSplitRenderer = false;
MinMaxWidth minMaxWidth = tableRenderer.GetMinMaxWidth();
// TODO DEVSIX-3676: currently margins and paddings are still applied as if they are in points. After the mentioned ticket is fixed, the expected values should be updated.
NUnit.Framework.Assert.AreEqual(minMaxWidth.GetMaxWidth(), 332.46f, 0.001);
NUnit.Framework.Assert.AreEqual(minMaxWidth.GetMinWidth(), 332.46f, 0.001);
}
public virtual void UpdateMinMaxWidth(MinMaxWidth minMaxWidth)
{
if (minMaxWidth != null)
{
UpdateMaxChildWidth(minMaxWidth.GetMaxWidth());
UpdateMinChildWidth(minMaxWidth.GetMinWidth());
}
}
public virtual void ImageWidthTest02()
{
PdfImageXObject xObject = new PdfImageXObject(ImageDataFactory.Create(imageFolder + "Desert.jpg"));
iText.Layout.Element.Image image = new iText.Layout.Element.Image(xObject);
ImageRenderer renderer = new ImageRenderer(image);
image.SetProperty(Property.MAX_WIDTH, UnitValue.CreatePointValue(50));
MinMaxWidth minMaxWidth = renderer.GetMinMaxWidth();
NUnit.Framework.Assert.AreEqual(50.0, minMaxWidth.GetMaxWidth(), EPSILON);
NUnit.Framework.Assert.AreEqual(0.0, minMaxWidth.GetMaxWidth() - minMaxWidth.GetMinWidth(), EPSILON);
image.SetProperty(Property.MAX_WIDTH, UnitValue.CreatePercentValue(50));
minMaxWidth = renderer.GetMinMaxWidth();
NUnit.Framework.Assert.AreEqual(1024.0, minMaxWidth.GetMaxWidth(), EPSILON);
image.SetProperty(Property.MAX_HEIGHT, UnitValue.CreatePointValue(100f));
minMaxWidth = renderer.GetMinMaxWidth();
NUnit.Framework.Assert.AreEqual(100.0 * 1024.0 / 768.0, minMaxWidth.GetMaxWidth(), EPSILON);
image = new iText.Layout.Element.Image(xObject);
renderer = new ImageRenderer(image);
image.SetProperty(Property.MIN_WIDTH, UnitValue.CreatePointValue(2000));
image.SetProperty(Property.MAX_WIDTH, UnitValue.CreatePointValue(3000));
minMaxWidth = renderer.GetMinMaxWidth();
NUnit.Framework.Assert.AreEqual(2000.0, minMaxWidth.GetMaxWidth(), EPSILON);
NUnit.Framework.Assert.AreEqual(0.0, minMaxWidth.GetMaxWidth() - minMaxWidth.GetMinWidth(), EPSILON);
image.SetProperty(Property.MIN_HEIGHT, UnitValue.CreatePointValue(100f));
image.SetProperty(Property.HEIGHT, UnitValue.CreatePointValue(100f));
minMaxWidth = renderer.GetMinMaxWidth();
NUnit.Framework.Assert.AreEqual(100.0 * 1024.0 / 768.0, minMaxWidth.GetMaxWidth(), EPSILON);
}
public virtual void MinMaxWidthWithOneRenderer()
{
PdfDocument pdfDocument = new PdfDocument(new PdfWriter(new MemoryStream()));
Document document = new Document(pdfDocument);
TextRenderer textRenderer = new TextRenderer(new Text(""));
textRenderer.SetParent(document.GetRenderer());
textRenderer.SetProperty(Property.FONT, PdfFontFactory.CreateFont(THAI_FONT, PdfEncodings.IDENTITY_H));
textRenderer.SetText(THAI_TEXT);
textRenderer.SetSpecialScriptsWordBreakPoints(new List <int>(JavaUtil.ArraysAsList(3, 8, 10, 12, 15, 20, 23
, 26, 28, 30, 36)));
MinMaxWidth minMaxWidth = textRenderer.GetMinMaxWidth();
NUnit.Framework.Assert.IsTrue(minMaxWidth.GetMinWidth() < minMaxWidth.GetMaxWidth());
}
public virtual void OverflowWrapAnywhereProperty()
{
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(new MemoryStream()));
pdfDoc.AddNewPage();
Document doc = new Document(pdfDoc);
RootRenderer documentRenderer = doc.GetRenderer();
Text text = new Text("wow");
text.SetProperty(Property.OVERFLOW_WRAP, OverflowWrapPropertyValue.ANYWHERE);
TextRenderer textRenderer = (TextRenderer)text.GetRenderer();
textRenderer.SetParent(documentRenderer);
MinMaxWidth minMaxWidth = textRenderer.GetMinMaxWidth();
NUnit.Framework.Assert.IsTrue(minMaxWidth.GetMinWidth() < minMaxWidth.GetMaxWidth());
}
public virtual void SpecialScriptsWordBreakPointsSplit()
{
PdfDocument pdfDocument = new PdfDocument(new PdfWriter(new MemoryStream()));
Document document = new Document(pdfDocument);
TextRenderer textRenderer = new TextRenderer(new Text(""));
textRenderer.SetProperty(Property.FONT, PdfFontFactory.CreateFont(THAI_FONT, PdfEncodings.IDENTITY_H));
textRenderer.SetText(THAI_TEXT);
textRenderer.SetSpecialScriptsWordBreakPoints(new List <int>(JavaUtil.ArraysAsList(3, 8, 10, 12, 15, 20, 23
, 26, 28, 30, 36)));
LineRenderer lineRenderer = new LineRenderer();
lineRenderer.SetParent(document.GetRenderer());
lineRenderer.AddChild(textRenderer);
MinMaxWidth minMaxWidth = lineRenderer.GetMinMaxWidth();
float width = minMaxWidth.GetMinWidth() + minMaxWidth.GetMaxWidth() / 2;
LayoutResult layoutResult = lineRenderer.Layout(new LayoutContext(new LayoutArea(1, new Rectangle(width, 500
))));
IRenderer lineSplitRenderer = layoutResult.GetSplitRenderer();
NUnit.Framework.Assert.IsNotNull(lineSplitRenderer);
NUnit.Framework.Assert.IsNotNull(lineSplitRenderer.GetChildRenderers());
NUnit.Framework.Assert.IsTrue(lineSplitRenderer.GetChildRenderers()[0] is TextRenderer);
TextRenderer textSplitRenderer = (TextRenderer)lineSplitRenderer.GetChildRenderers()[0];
NUnit.Framework.Assert.IsNotNull(textSplitRenderer.GetSpecialScriptsWordBreakPoints());
IRenderer lineOverflowRenderer = layoutResult.GetOverflowRenderer();
NUnit.Framework.Assert.IsNotNull(lineOverflowRenderer);
NUnit.Framework.Assert.IsNotNull(lineOverflowRenderer.GetChildRenderers());
NUnit.Framework.Assert.IsTrue(lineOverflowRenderer.GetChildRenderers()[0] is TextRenderer);
TextRenderer textOverflowRenderer = (TextRenderer)lineOverflowRenderer.GetChildRenderers()[0];
NUnit.Framework.Assert.IsNotNull(textOverflowRenderer.GetSpecialScriptsWordBreakPoints());
int textSplitRendererTextLength = textSplitRenderer.text.ToString().Length;
foreach (int specialScriptsWordBreakPoint in textSplitRenderer.GetSpecialScriptsWordBreakPoints())
{
NUnit.Framework.Assert.IsTrue(specialScriptsWordBreakPoint <= textSplitRendererTextLength);
}
foreach (int specialScriptsWordBreakPoint in textOverflowRenderer.GetSpecialScriptsWordBreakPoints())
{
NUnit.Framework.Assert.IsTrue(specialScriptsWordBreakPoint > textSplitRendererTextLength && specialScriptsWordBreakPoint
<= textOverflowRenderer.text.Size());
}
}
/// <summary>This method tries to calculate width of not rotated renderer, so after rotation it fits availableWidth.
/// </summary>
/// <remarks>
/// This method tries to calculate width of not rotated renderer, so after rotation it fits availableWidth.
/// This method uses heuristics of
/// <see cref="iText.Layout.Minmaxwidth.RotationMinMaxWidth.Calculate(double, double, iText.Layout.Minmaxwidth.MinMaxWidth, double)
/// "/>.
/// It doesn't take into account any of height properties of renderer or height of layoutArea.
/// The minMaxWidth calculations and initial layout may take long time, but they won't be called if the renderer have width property.
/// </remarks>
/// <param name="availableWidth">the width of layoutArea</param>
/// <param name="renderer">the actual renderer</param>
/// <returns>
/// the width that should be set as width of layout area to properly layout element, or fallback to
/// <see cref="AbstractRenderer.RetrieveWidth(float)"/>
/// in case it can not be calculated, or renderer isn't rotated.
/// </returns>
public static float?RetrieveRotatedLayoutWidth(float availableWidth, AbstractRenderer renderer)
{
RotationUtils.PropertiesBackup backup = new RotationUtils.PropertiesBackup(renderer);
float?rotation = backup.StoreFloatProperty(Property.ROTATION_ANGLE);
if (rotation != null && renderer.GetProperty <UnitValue>(Property.WIDTH) == null)
{
float angle = (float)rotation;
backup.StoreProperty <UnitValue>(Property.HEIGHT);
backup.StoreProperty <UnitValue>(Property.MIN_HEIGHT);
backup.StoreProperty <UnitValue>(Property.MAX_HEIGHT);
MinMaxWidth minMaxWidth = renderer.GetMinMaxWidth();
//Using this width for initial layout helps in case of small elements. They may have more free spaces but it's more likely they fit.
float length = (minMaxWidth.GetMaxWidth() + minMaxWidth.GetMinWidth()) / 2 + MinMaxWidthUtils.GetEps();
LayoutResult layoutResult = renderer.Layout(new LayoutContext(new LayoutArea(1, new Rectangle(length, AbstractRenderer
.INF))));
backup.RestoreProperty(Property.HEIGHT);
backup.RestoreProperty(Property.MIN_HEIGHT);
backup.RestoreProperty(Property.MAX_HEIGHT);
Rectangle additions = new Rectangle(0, 0);
renderer.ApplyPaddings(additions, true);
renderer.ApplyBorderBox(additions, true);
renderer.ApplyMargins(additions, true);
if (layoutResult.GetOccupiedArea() != null)
{
double area = layoutResult.GetOccupiedArea().GetBBox().GetWidth() * layoutResult.GetOccupiedArea().GetBBox
().GetHeight();
RotationMinMaxWidth result = RotationMinMaxWidth.Calculate(angle, area, minMaxWidth, availableWidth);
if (result != null)
{
backup.RestoreProperty(Property.ROTATION_ANGLE);
if (result.GetMaxWidthHeight() > result.GetMinWidthHeight())
{
return((float)(result.GetMinWidthOrigin() - additions.GetWidth() + MinMaxWidthUtils.GetEps()));
}
else
{
return((float)(result.GetMaxWidthOrigin() - additions.GetWidth() + MinMaxWidthUtils.GetEps()));
}
}
}
}
backup.RestoreProperty(Property.ROTATION_ANGLE);
return(renderer.RetrieveWidth(availableWidth));
}
