Interface IFPainter
- All Known Implementing Classes:
AbstractIFPainter
,AFPPainter
,IFSerializer
,Java2DPainter
,PCLPainter
,PDFPainter
,PSPainter
public interface IFPainter
Interface used to paint whole documents layouted by Apache FOP.
Call sequence:
startDocument() startDocumentHeader() [handleExtension()]* endDocumentHeader() [ startPageSequence() [ startPage() startPageHeader() [handleExtension()]* endPageHeader() startPageContent() (#pageContent)+ endPageContent() startPageTrailer() (addTarget())* endPageTrailer() endPage() ]* endPageSequence() ]* startDocumentTrailer() [handleExtension()]* endDocumentTrailer() endDocument() #box: startBox() (#pageContent)+ endBox() #pageContent: ( setFont() | drawText() | drawRect() | drawImage() | TODO etc. etc. | handleExtensionObject() )
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Method Summary
Modifier and TypeMethodDescriptionvoid
clipBackground
(Rectangle rect, BorderProps bpsBefore, BorderProps bpsAfter, BorderProps bpsStart, BorderProps bpsEnd) Restricts the current clipping region to the inner border.void
Restricts the current clipping region with the given rectangle.void
drawBorderRect
(Rectangle rect, BorderProps top, BorderProps bottom, BorderProps left, BorderProps right, Color innerBackgroundColor) Draws a border rectangle.void
Draws an image identified by a URI inside a given rectangle.void
Draws an image (represented by a DOM document) inside a given rectangle.void
Draws a line.void
Draws text.void
drawText
(int x, int y, int letterSpacing, int wordSpacing, int[][] dp, String text, boolean nextIsSpace) void
endGroup()
Ends the current group and restores the previous coordinate system (and layer).void
Ends the current viewport and restores the previous coordinate system.void
Fills a rectangular area.boolean
isBackgroundRequired
(BorderProps bpsBefore, BorderProps bpsAfter, BorderProps bpsStart, BorderProps bpsEnd) TODO Painter-specific rounded borders logic required background drawing to be made optional.void
Updates the current font.void
startGroup
(AffineTransform[] transforms, String layer) Starts a new group of graphical elements.void
startGroup
(AffineTransform transform, String layer) Starts a new group of graphical elements.void
startViewport
(AffineTransform[] transforms, Dimension size, Rectangle clipRect) Starts a new viewport, establishing a new coordinate system.void
startViewport
(AffineTransform transform, Dimension size, Rectangle clipRect) Starts a new viewport, establishing a new coordinate system.
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Method Details
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startViewport
void startViewport(AffineTransform transform, Dimension size, Rectangle clipRect) throws IFException Starts a new viewport, establishing a new coordinate system. A viewport has a size and can optionally be clipped. Corresponds to SVG's svg element.- Parameters:
transform
- the transformation matrix establishing the new coordinate systemsize
- the size of the viewportclipRect
- the clipping rectangle (may be null)- Throws:
IFException
- if an error occurs while handling this element
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startViewport
void startViewport(AffineTransform[] transforms, Dimension size, Rectangle clipRect) throws IFException Starts a new viewport, establishing a new coordinate system. A viewport has a size and can optionally be clipped. Corresponds to SVG's svg element.- Parameters:
transforms
- a series of transformation matrices establishing the new coordinate systemsize
- the size of the viewportclipRect
- the clipping rectangle (may be null)- Throws:
IFException
- if an error occurs while handling this element
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endViewport
Ends the current viewport and restores the previous coordinate system.- Throws:
IFException
- if an error occurs while handling this element
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startGroup
Starts a new group of graphical elements. Corresponds to SVG's g element.- Parameters:
transforms
- a series of transformation matrices establishing the new coordinate systemlayer
- an optional layer label (or null if none)- Throws:
IFException
- if an error occurs while handling this element
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startGroup
Starts a new group of graphical elements. Corresponds to SVG's g element.- Parameters:
transform
- the transformation matrix establishing the new coordinate systemlayer
- an optional layer label (or null if none)- Throws:
IFException
- if an error occurs while handling this element
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endGroup
Ends the current group and restores the previous coordinate system (and layer).- Throws:
IFException
- if an error occurs while handling this element
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setFont
void setFont(String family, String style, Integer weight, String variant, Integer size, Color color) throws IFException Updates the current font.- Parameters:
family
- the font family (or null if there's no change)style
- the font style (or null if there's no change)weight
- the font weight (or null if there's no change)variant
- the font variant (or null if there's no change)size
- the font size (or null if there's no change)color
- the text color (or null if there's no change)- Throws:
IFException
- if an error occurs while handling this event
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drawText
void drawText(int x, int y, int letterSpacing, int wordSpacing, int[][] dp, String text) throws IFException Draws text. The initial coordinates (x and y) point to the starting point at the normal baseline of the font. The parameters letterSpacing, wordSpacing and the array dx are optional and can be used to influence character positioning (for example, for kerning).- Parameters:
x
- X-coordinate of the starting point of the texty
- Y-coordinate of the starting point of the textletterSpacing
- additional spacing between characters (may be 0)wordSpacing
- additional spacing between words (may be 0)dp
- an array of 4-tuples, expressing [X,Y] placment adjustments and [X,Y] advancement adjustments, in that order (may be null); if not null, then adjustments.length must be the same as text.length()text
- the text- Throws:
IFException
- if an error occurs while handling this event
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drawText
void drawText(int x, int y, int letterSpacing, int wordSpacing, int[][] dp, String text, boolean nextIsSpace) throws IFException - Throws:
IFException
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clipRect
Restricts the current clipping region with the given rectangle.- Parameters:
rect
- the rectangle's coordinates and extent- Throws:
IFException
- if an error occurs while handling this event
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clipBackground
void clipBackground(Rectangle rect, BorderProps bpsBefore, BorderProps bpsAfter, BorderProps bpsStart, BorderProps bpsEnd) throws IFException Restricts the current clipping region to the inner border.- Parameters:
rect
- the rectangle's coordinates and extentbpsBefore
- the border segment on the before-side (top)bpsAfter
- the border segment on the after-side (bottom)bpsStart
- the border segment on the start-side (left)bpsEnd
- the border segment on the end-side (right)- Throws:
IFException
- if an error occurs while handling this event
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isBackgroundRequired
boolean isBackgroundRequired(BorderProps bpsBefore, BorderProps bpsAfter, BorderProps bpsStart, BorderProps bpsEnd) TODO Painter-specific rounded borders logic required background drawing to be made optional. A future refactoring of the rounded borders code should aim to make the need for this abstraction obsolete- Parameters:
bpsBefore
- the before borderbpsAfter
- the after borderbpsStart
- the start borderbpsEnd
- the end border- Returns:
- true if and only if background drawing is required
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fillRect
Fills a rectangular area.- Parameters:
rect
- the rectangle's coordinates and extentfill
- the fill paint- Throws:
IFException
- if an error occurs while handling this event
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drawBorderRect
void drawBorderRect(Rectangle rect, BorderProps top, BorderProps bottom, BorderProps left, BorderProps right, Color innerBackgroundColor) throws IFException Draws a border rectangle. The border segments are specified throughBorderProps
instances.- Parameters:
rect
- the rectangle's coordinates and extenttop
- the border segment on the top edgebottom
- the border segment on the bottom edgeleft
- the border segment on the left edgeright
- the border segment on the right edgeinnerBackgroundColor
- the color of the inner background- Throws:
IFException
- if an error occurs while handling this event
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drawLine
Draws a line. NOTE: Currently, only horizontal lines are implemented!- Parameters:
start
- the start point of the lineend
- the end point of the linewidth
- the line widthcolor
- the line colorstyle
- the line style (using the Constants.EN_* constants for the rule-style property)- Throws:
IFException
- if an error occurs while handling this event
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drawImage
Draws an image identified by a URI inside a given rectangle. This is the equivalent to an fo:external-graphic in XSL-FO.- Parameters:
uri
- the image's URIrect
- the rectangle in which the image shall be painted- Throws:
IFException
- if an error occurs while handling this event
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drawImage
Draws an image (represented by a DOM document) inside a given rectangle. This is the equivalent to an fo:instream-foreign-object in XSL-FO.- Parameters:
doc
- the DOM document containing the foreign objectrect
- the rectangle in which the image shall be painted- Throws:
IFException
- if an error occurs while handling this event
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