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Eclipse Platform Release 3.6 |
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java.lang.Objectjava.util.EventObject
org.eclipse.swt.internal.SWTEventObject
org.eclipse.swt.events.TypedEvent
org.eclipse.swt.custom.BidiSegmentEvent
public class BidiSegmentEvent
This event is sent to BidiSegmentListeners when a line is to be measured or rendered in a bidi locale. The segments field can be used in conjunction with the segmentsChars field or by itself. Setting only the segmentsChars field has no effect. When used by itself, the segments field specify text ranges in the line that should be treated as separate segments for bidi reordering. Each segment will be reordered and rendered separately.
The elements in the segments field specify the start offset of a segment relative to the start of the line. They must follow the following rules:
stored line = "R1R2R3" + "R4R5R6" R1 to R6 are right-to-left characters. The quotation marks are part of the line text. The line is 13 characters long. segments = null: entire line will be reordered and thus the two R2L segments swapped (as per the bidi algorithm). visual line (rendered on screen) = "R6R5R4" + "R3R2R1" segments = [0, 5, 8] "R1R2R3" will be reordered, followed by [blank]+[blank] and "R4R5R6". visual line = "R3R2R1" + "R6R5R4"
The segments and segementsChars fields can be used together to obtain different types of bidi reordering and text display. The application can use these two fields to insert Unicode Control Characters in specific offsets in the line, the character at segmentsChars[i] is inserted at the offset specified by segments[i]. When both fields are set, the rules for the segments field are less restrictive:
Field Summary | |
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int |
lineOffset
line start offset |
String |
lineText
line text |
int[] |
segments
bidi segments, see above |
char[] |
segmentsChars
characters to be used in the segment boundaries (optional) |
Fields inherited from class org.eclipse.swt.events.TypedEvent |
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data, display, time, widget |
Fields inherited from class java.util.EventObject |
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source |
Method Summary |
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Methods inherited from class org.eclipse.swt.events.TypedEvent |
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toString |
Methods inherited from class java.util.EventObject |
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getSource |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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public int lineOffset
public String lineText
public int[] segments
public char[] segmentsChars
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Eclipse Platform Release 3.6 |
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