PDFRenderHints (Qoppa jPDFViewer API)

java.lang.Object
- com.qoppa.pdf.PDFRenderHints

```
public class PDFRenderHints
extends Object
```
PDFRenderHints allows the application to change the default rendering hints used when rendering a document. The class initializes the default rendering hints to:
- RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON
- RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON
- RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON
The default settings can be modified by the host application by calling PDFRenderHints.setRenderingHint or PDFRenderHints.setRenderingHints.
Author:

Qoppa Software

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`CHINESE_SANSSERIF`
`static int`	`CHINESE_SERIF`
`static int`	`CHINESE_SIMPLIFIED`
`static int`	`JAPANESE_SANSSERIF`
`static int`	`JAPANESE_SERIF`
`static int`	`KOREAN_SANSSERIF`
`static int`	`KOREAN_SERIF`

Constructor Summary

Constructors
Constructor and Description

PDFRenderHints()

Constructors
Constructor and Description
`PDFRenderHints()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static int`	`getImagePaintingMemoryMB()` Returns the amount of memory used when painting images, in megabytes
`static Object`	`getRenderingHint(RenderingHints.Key key)` Gets one rendering hint.
`static RenderingHints`	`getRenderingHints()` Gets a copy of the rendering hints.
`static boolean`	`isEnhanceThinLines()` Returns the value of the enhance thin lines flag.
`static boolean`	`isIgnoreLineWeights()` Returns the value of the ignore line weights flag.
`static boolean`	`isRenderComments()` Returns the value of the render comments flag.
`static boolean`	`renderSignatureTag()` This method returns the value of the flag that controls rendering of the signature tag on empty fields.
`static boolean`	`renderSignatureVerify()` This method returns the value of the flag that controls whether signature verification will be rendered.
`static void`	`setCMYKProfile(ICC_Profile cmykProfile)` Sets a custom CMYK profile to use when reading any CMYK color information.
`static void`	`setEnhanceThinLines(boolean b)` Sets the value of the enhance thin lines flag.
`static void`	`setIgnoreLineWeights(boolean b)` Sets the value of the ignore line weights flag.
`static void`	`setImagePaintingMemoryMB(int imagePaintingMemory)` Sets the amount of memory used when painting images, in megabytes, i.e.
`static void`	`setRenderComments(boolean renderComments)` Sets a flag to tell the library to render annotations.
`static void`	`setRenderingHint(RenderingHints.Key key, Object value)` Sets one rendering hint.
`static void`	`setRenderingHints(RenderingHints hints)` Sets the rendering hints.
`static void`	`setRenderSignatureTag(boolean renderSignatureTag)` This method sets the value of the flag that controls whether the signature tag ("Sign Here") is rendered for empty signature fields.
`static void`	`setRenderSignatureVerification(boolean renderSignatureVerify)` This method sets the value of the flag that controls whether signature verification will be rendered.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - JAPANESE_SERIF
```
public static final int JAPANESE_SERIF
```
    See Also:
    
    Constant Field Values
  - JAPANESE_SANSSERIF
```
public static final int JAPANESE_SANSSERIF
```
    See Also:
    
    Constant Field Values
  - CHINESE_SERIF
```
public static final int CHINESE_SERIF
```
    See Also:
    
    Constant Field Values
  - CHINESE_SANSSERIF
```
public static final int CHINESE_SANSSERIF
```
    See Also:
    
    Constant Field Values
  - CHINESE_SIMPLIFIED
```
public static final int CHINESE_SIMPLIFIED
```
    See Also:
    
    Constant Field Values
  - KOREAN_SERIF
```
public static final int KOREAN_SERIF
```
    See Also:
    
    Constant Field Values
  - KOREAN_SANSSERIF
```
public static final int KOREAN_SANSSERIF
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - PDFRenderHints
```
public PDFRenderHints()
```
- Method Detail
  - setRenderingHints
```
public static void setRenderingHints(RenderingHints hints)
```
    Sets the rendering hints. This method replaces all the rendering hints with the argument.
    
    Parameters:
    
    hints - The new rendering hints.
  - getRenderingHints
```
public static RenderingHints getRenderingHints()
```
    Gets a copy of the rendering hints. This method returns a copy of all the rendering hints.
    
    Returns:
    
    The rendering hints.
  - setRenderingHint
```
public static void setRenderingHint(RenderingHints.Key key,
                                    Object value)
```
    Sets one rendering hint. This method sets the value of a single rendering hint.
    
    Parameters:
    
    key - The rendering hint key.
    
    value - The new value of the rendering hint.
  - getRenderingHint
```
public static Object getRenderingHint(RenderingHints.Key key)
```
    Gets one rendering hint. This method returns the value of a rendering hint.
    
    Parameters:
    
    key - The rendering hint key.
    
    Returns:
    
    The value of the rendering hint.
  - setCMYKProfile
```
public static void setCMYKProfile(ICC_Profile cmykProfile)
```
    Sets a custom CMYK profile to use when reading any CMYK color information. If the host application needs to have custom CMYK to RGB conversion, it can call this method to set a custom profile.
    
    Parameters:
    
    cmykProfile - The new profile to use for CMYK color conversion
  - renderSignatureVerify
```
public static boolean renderSignatureVerify()
```
    This method returns the value of the flag that controls whether signature verification will be rendered. When this flag is true, the renderer will show an icon on the signature field representing the results of the signature verification. The default value is true.
    
    Returns:
    
    The value of the flag that controls rendering of signature verification
  - setRenderSignatureVerification
```
public static void setRenderSignatureVerification(boolean renderSignatureVerify)
```
    This method sets the value of the flag that controls whether signature verification will be rendered. When this flag is true, the renderer will show an icon on the signature field representing the results of the signature verification. The default value is true.
    
    Parameters:
    
    renderSignatureVerify - The new value of the flag
  - setRenderSignatureTag
```
public static void setRenderSignatureTag(boolean renderSignatureTag)
```
    This method sets the value of the flag that controls whether the signature tag ("Sign Here") is rendered for empty signature fields. The default value is true.
    
    Parameters:
    
    renderSignatureTag - The new value of the flag.
  - renderSignatureTag
```
public static boolean renderSignatureTag()
```
    This method returns the value of the flag that controls rendering of the signature tag on empty fields. The signature tag is an icon with the a caption like "Sign Here." The default value is true.
    
    Returns:
    
    The current value of the render signature tag flag.
  - setRenderComments
```
public static void setRenderComments(boolean renderComments)
```
    Sets a flag to tell the library to render annotations. When this is set to false, pages in documents will not be rendered with their comments.
    
    Parameters:
    
    renderComments - New value of the flag.
  - isRenderComments
```
public static boolean isRenderComments()
```
    Returns the value of the render comments flag.
    
    Returns:
    
    The value of the render comments flag.
  - setImagePaintingMemoryMB
```
public static void setImagePaintingMemoryMB(int imagePaintingMemory)
```
    Sets the amount of memory used when painting images, in megabytes, i.e. setting the value to 4 will allocate 4 MB of memory to be used when painting images. Images are painted in strips, to be able to handle images of unlimited size. This amount of memory determines the height of each memory strip that is processed and painted. This memory is used during painting an image and then released, it is not retained. The memory cannot be set below 1 MB, if it is, the request will be ignored.
    
    Parameters:
    
    imagePaintingMemory - The new amount of memory to use when painting images.
  - getImagePaintingMemoryMB
```
public static int getImagePaintingMemoryMB()
```
    Returns the amount of memory used when painting images, in megabytes
  - setEnhanceThinLines
```
public static void setEnhanceThinLines(boolean b)
```
    Sets the value of the enhance thin lines flag. When set to true, the line width will be set to a minimum of 1 pt adjusted for zoom level.
    
    Parameters:
    
    b - The value of the enhance thin lines flag.
  - isEnhanceThinLines
```
public static boolean isEnhanceThinLines()
```
    Returns the value of the enhance thin lines flag.
    
    Returns:
    
    The value of the enhance thin lines flag.
  - setIgnoreLineWeights
```
public static void setIgnoreLineWeights(boolean b)
```
    Sets the value of the ignore line weights flag. When set to true, the line widths for all lines will be set to 1 pt.
    
    Parameters:
    
    b - The value of the enhance thin lines flag.
  - isIgnoreLineWeights
```
public static boolean isIgnoreLineWeights()
```
    Returns the value of the ignore line weights flag.
    
    Returns:
    
    The value of the ignore line weights flag.

Class PDFRenderHints

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

JAPANESE_SERIF

JAPANESE_SANSSERIF

CHINESE_SERIF

CHINESE_SANSSERIF

CHINESE_SIMPLIFIED

KOREAN_SERIF

KOREAN_SANSSERIF

Constructor Detail

PDFRenderHints

Method Detail

setRenderingHints

getRenderingHints

setRenderingHint

getRenderingHint

setCMYKProfile

renderSignatureVerify

setRenderSignatureVerification

setRenderSignatureTag

renderSignatureTag

setRenderComments

isRenderComments

setImagePaintingMemoryMB

getImagePaintingMemoryMB

setEnhanceThinLines

isEnhanceThinLines

setIgnoreLineWeights

isIgnoreLineWeights