Examples with ITextViewerExtension5 org.eclipse.jface.text.ITextViewerExtension5 used on opensource projects

Example 21 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project eclipse.platform.text by eclipse.

the class TextViewerDeleteLineTarget method clipToVisibleRegion.

/**
 * Clips the given start and end offset to the visible viewer region.
 *
 * @param startOffset the start offset
 * @param endOffset the end offset
 * @return the clipped region
 * @since 3.3.2
 */
private IRegion clipToVisibleRegion(int startOffset, int endOffset) {
    ITextViewer viewer = fClipboard.getViewer();
    IRegion visibleRegion;
    if (viewer instanceof ITextViewerExtension5)
        visibleRegion = ((ITextViewerExtension5) viewer).getModelCoverage();
    else
        visibleRegion = viewer.getVisibleRegion();
    int visibleStart = visibleRegion.getOffset();
    int visibleLength = visibleRegion.getLength();
    startOffset = Math.max(startOffset, visibleStart);
    endOffset = Math.min(endOffset, visibleStart + visibleLength);
    return new Region(startOffset, endOffset - startOffset);
}

Example 22 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project eclipse.platform.text by eclipse.

the class AbstractTemplatesPage method getOffset.

/**
 * Returns the document relative offset from the text widget relative point
 *
 * @param document the document
 * @param textWidget the text widget
 * @param point the point for which to get the offset
 * @return the offset
 * @throws BadLocationException if the document is accessed with an invalid line
 */
private int getOffset(IDocument document, StyledText textWidget, Point point) throws BadLocationException {
    int widgetCaret = fViewer.getTextWidget().getCaretOffset();
    if (fViewer instanceof ITextViewerExtension5) {
        ITextViewerExtension5 ext = (ITextViewerExtension5) fViewer;
        int widgetOffset = textWidget.getOffsetAtPoint(point);
        int offset = widgetOffset != -1 ? ext.widgetOffset2ModelOffset(textWidget.getOffsetAtPoint(point)) : -1;
        if (offset == -1) {
            int docLineIndex = ext.widgetLine2ModelLine(textWidget.getLineIndex(point.y));
            String lineDelimiter = document.getLineDelimiter(docLineIndex);
            int delimLength = lineDelimiter == null ? 0 : lineDelimiter.length();
            return document.getLineOffset(docLineIndex) + document.getLineLength(docLineIndex) - delimLength;
        }
        return offset;
    }
    IRegion visible = fViewer.getVisibleRegion();
    return widgetCaret + visible.getOffset();
}

Example 23 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project eclipse.platform.text by eclipse.

the class OverviewRuler method handleMouseScrolled.

/**
 * Handles mouse scrolls.
 *
 * @param event the mouse scrolled event
 */
private void handleMouseScrolled(MouseEvent event) {
    if (fTextViewer instanceof ITextViewerExtension5) {
        ITextViewerExtension5 extension = (ITextViewerExtension5) fTextViewer;
        StyledText textWidget = fTextViewer.getTextWidget();
        int topIndex = textWidget.getTopIndex();
        int newTopIndex = Math.max(0, topIndex - event.count);
        fTextViewer.setTopIndex(extension.widgetLine2ModelLine(newTopIndex));
    } else if (fTextViewer != null) {
        int topIndex = fTextViewer.getTopIndex();
        int newTopIndex = Math.max(0, topIndex - event.count);
        fTextViewer.setTopIndex(newTopIndex);
    }
}

Example 24 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project eclipse.platform.text by eclipse.

the class VerticalRuler method doubleBufferPaint.

/**
 * Double buffer drawing.
 *
 * @param dest the GC to draw into
 */
private void doubleBufferPaint(GC dest) {
    Point size = fCanvas.getSize();
    if (size.x <= 0 || size.y <= 0)
        return;
    if (fBuffer != null) {
        Rectangle r = fBuffer.getBounds();
        if (r.width != size.x || r.height != size.y) {
            fBuffer.dispose();
            fBuffer = null;
        }
    }
    if (fBuffer == null)
        fBuffer = new Image(fCanvas.getDisplay(), size.x, size.y);
    GC gc = new GC(fBuffer);
    gc.setFont(fTextViewer.getTextWidget().getFont());
    try {
        gc.setBackground(fCanvas.getBackground());
        gc.fillRectangle(0, 0, size.x, size.y);
        if (fTextViewer instanceof ITextViewerExtension5)
            doPaint1(gc);
        else
            doPaint(gc);
    } finally {
        gc.dispose();
    }
    dest.drawImage(fBuffer, 0, 0);
}

Example 25 with ITextViewerExtension5

use of org.eclipse.jface.text.ITextViewerExtension5 in project eclipse.platform.text by eclipse.

the class VerticalRuler method widgetLine2ModelLine.

/**
 * Returns the line of the viewer's document that corresponds to the given widget line.
 *
 * @param viewer the viewer
 * @param widgetLine the widget line
 * @return the corresponding line of the viewer's document
 * @since 2.1
 */
protected static final int widgetLine2ModelLine(ITextViewer viewer, int widgetLine) {
    if (viewer instanceof ITextViewerExtension5) {
        ITextViewerExtension5 extension = (ITextViewerExtension5) viewer;
        return extension.widgetLine2ModelLine(widgetLine);
    }
    try {
        IRegion r = viewer.getVisibleRegion();
        IDocument d = viewer.getDocument();
        return widgetLine += d.getLineOfOffset(r.getOffset());
    } catch (BadLocationException x) {
    }
    return widgetLine;
}