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org.eclipse.jface.text.source
Interface AnnotationPainter.IDrawingStrategy
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All Known Implementing Classes:
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AnnotationPainter.NullStrategy,
AnnotationPainter.SquigglesStrategy
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Enclosing class:
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AnnotationPainter
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public static interface AnnotationPainter.IDrawingStrategy
A drawing strategy draws the decoration for an annotation onto the text widget.
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Since:
- 3.0
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Method Summary
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void
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draw
(
Annotation annotation,
GC gc,
StyledText textWidget,
int offset,
int length,
Color color)
Draws a decoration for an annotation onto the specified GC at the given text range. |
draw
void draw(
Annotation annotation,
GC gc,
StyledText textWidget,
int offset,
int length,
Color color)
- Draws a decoration for an annotation onto the specified GC at the given text range. There
are two different invocation modes of the
draw method:
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drawing mode: the passed GC is the graphics context of a paint
event occurring on the text widget. The strategy should draw the decoration onto the
graphics context, such that the decoration appears at the given range in the text
widget.
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clearing mode: the passed GC is
null. In this case
the strategy must invalidate enough of the text widget's client area to cover any
decoration drawn in drawing mode. This can usually be accomplished by calling
textWidget.redrawRange(offset, length, true).
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Parameters:
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annotation - the annotation to be drawn -
gc - the graphics context, null when in clearing mode -
textWidget - the text widget to draw on -
offset - the offset of the line -
length - the length of the line -
color - the color of the line
Guidelines for using Eclipse APIs.
Copyright (c) Eclipse contributors and others 2000, 2008. All rights reserved.
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