X-Git-Url: http://git.phpeclipse.com diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/LinePainter.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/LinePainter.java deleted file mode 100644 index a3b7167..0000000 --- a/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/LinePainter.java +++ /dev/null @@ -1,172 +0,0 @@ -package net.sourceforge.phpeclipse.phpeditor; - -/* - * (c) Copyright IBM Corp. 2000, 2001. - * All Rights Reserved. - */ - -import org.eclipse.jface.text.BadLocationException; -import org.eclipse.jface.text.IDocument; -import org.eclipse.jface.text.Position; -import org.eclipse.jface.text.source.ISourceViewer; -import org.eclipse.swt.custom.LineBackgroundEvent; -import org.eclipse.swt.custom.LineBackgroundListener; -import org.eclipse.swt.custom.StyledText; -import org.eclipse.swt.graphics.Color; -import org.eclipse.swt.graphics.Point; - -public class LinePainter implements IPainter, LineBackgroundListener { - - private final ISourceViewer fViewer; - private Color fHighlightColor; - private IPositionManager fPositionManager; - - // positions to keep track of beginning and end of line to be painted or cleared - private Position fCurrentLine= new Position(0, 0); - private Position fLastLine= new Position(0, 0); - // used to keep track of the last line painted - private int fLastLineNumber= -1; - private boolean fIsActive; - - public LinePainter(ISourceViewer sourceViewer) { - fViewer= sourceViewer; - } - - public void setHighlightColor(Color highlightColor) { - fHighlightColor= highlightColor; - } - - /* - * @see LineBackgroundListener#lineGetBackground(LineBackgroundEvent) - */ - public void lineGetBackground(LineBackgroundEvent event) { - // don't use cached line information because of asynch painting - - StyledText textWidget= fViewer.getTextWidget(); - if (textWidget != null) { - - int caret= textWidget.getCaretOffset(); - int length= event.lineText.length(); - - if (event.lineOffset <= caret && caret <= event.lineOffset + length) - event.lineBackground= fHighlightColor; - else - event.lineBackground= textWidget.getBackground(); - } - } - - private boolean updateHighlightLine() { - try { - - IDocument document= fViewer.getDocument(); - - int offset= fViewer.getTextWidget().getCaretOffset() + fViewer.getVisibleRegion().getOffset(); - int lineNumber= document.getLineOfOffset(offset); - - // redraw if the current line number is different from the last line number we painted - // initially fLastLineNumber is -1 - if (lineNumber != fLastLineNumber) { - - fLastLine.offset= fCurrentLine.offset; - fLastLine.length= fCurrentLine.length; - fLastLine.isDeleted= fCurrentLine.isDeleted; - - fCurrentLine.isDeleted= false; - fCurrentLine.offset= document.getLineOffset(lineNumber); - if (lineNumber == document.getNumberOfLines() - 1) - fCurrentLine.length= document.getLength() - fCurrentLine.offset; - else - fCurrentLine.length= document.getLineOffset(lineNumber + 1) - fCurrentLine.offset; - - fLastLineNumber= lineNumber; - return true; - - } - - } catch (BadLocationException e) { - } - - return false; - } - - private void drawHighlightLine(Position position, int visibleOffset) { - StyledText textWidget= fViewer.getTextWidget(); - - // if the position that is about to be drawn was deleted then we can't - if (position.isDeleted()) - return; - - int delta= position.offset - visibleOffset; - if (0 <= delta && delta <= fViewer.getVisibleRegion().getLength()) { - Point upperLeft= textWidget.getLocationAtOffset(delta); - int width= textWidget.getClientArea().width + textWidget.getHorizontalPixel(); - int height= textWidget.getLineHeight(); - textWidget.redraw(upperLeft.x, upperLeft.y, width, height, false); - } - } - - /* - * @see IPainter#deactivate(boolean) - */ - public void deactivate(boolean redraw) { - if (fIsActive) { - fIsActive= false; - - /* on turning off the feature one has to paint the currently - * highlighted line with the standard background color - */ - if (redraw) - drawHighlightLine(fCurrentLine, fViewer.getVisibleRegion().getOffset()); - - fViewer.getTextWidget().removeLineBackgroundListener(this); - - if (fPositionManager != null) - fPositionManager.removeManagedPosition(fCurrentLine); - - fLastLineNumber= -1; - } - } - - /* - * @see IPainter#dispose() - */ - public void dispose() { - } - - /* - * @see IPainter#paint(int) - */ - public void paint(int reason) { - - // check selection - Point selection= fViewer.getTextWidget().getSelectionRange(); - if (selection.y > 0) { - deactivate(true); - return; - } - - // initialization - if (!fIsActive) { - fViewer.getTextWidget().addLineBackgroundListener(this); - fPositionManager.addManagedPosition(fCurrentLine); - fIsActive= true; - } - - //redraw line highlight only if it hasn't been drawn yet on the respective line - if (updateHighlightLine()) { - // used to handle segmented view of source files - int visibleRegionOffset= fViewer.getVisibleRegion().getOffset(); - // clear last line - drawHighlightLine(fLastLine, visibleRegionOffset); - // draw new line - drawHighlightLine(fCurrentLine, visibleRegionOffset); - } - } - - /* - * @see IPainter#setPositionManager(IPositionManager) - */ - public void setPositionManager(IPositionManager manager) { - fPositionManager = manager; - } -} \ No newline at end of file