org.jfree.report.layout
Interface SizeCalculator

All Known Implementing Classes:

DefaultSizeCalculator

public interface SizeCalculator

The interface for an class that is able to calculate the width of a given string, and the height of a line of text. The calculations rely on state information (e.g. font size, graphics device, etc) maintained by the calculator.

Every LayoutSupport can create an instance of a class that implements this interface, via the LayoutSupport.createTextSizeCalculator(org.jfree.report.style.FontDefinition) method.

Author:

Thomas Morgner

Field Summary

static java.lang.String	CLIP_TEXT
static java.lang.String	USE_MAX_CHAR_SIZE

Method Summary

float	getLineHeight() Returns the line height.
float	getStringWidth(java.lang.String text, int lineStartPos, int endPos) Calculates the width of a String in the current Graphics context.

Field Detail

USE_MAX_CHAR_SIZE

public static final java.lang.String USE_MAX_CHAR_SIZE

CLIP_TEXT

public static final java.lang.String CLIP_TEXT

Method Detail

getStringWidth

public float getStringWidth(java.lang.String text,
                            int lineStartPos,
                            int endPos)

Calculates the width of a String in the current Graphics context.

Parameters:

text - the text.

lineStartPos - the start position of the substring to be measured.

endPos - the position of the last character to be measured.

Returns:

the width of the string in Java2D units.

getLineHeight

public float getLineHeight()

Returns the line height. This includes the font's ascent, descent and leading.

Returns:

the line height.