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

Example 31 with ITextViewerExtension5

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

the class LineNumberRulerColumn method handleMouseScrolled.

/**
 * Handles mouse scrolled events on the ruler by forwarding them to the text widget.
 *
 * @param e the mouse event
 * @since 3.10
 */
void handleMouseScrolled(MouseEvent e) {
    if (fCachedTextViewer instanceof ITextViewerExtension5) {
        ITextViewerExtension5 extension = (ITextViewerExtension5) fCachedTextViewer;
        StyledText textWidget = fCachedTextViewer.getTextWidget();
        int topIndex = textWidget.getTopIndex();
        int newTopIndex = Math.max(0, topIndex - e.count);
        fCachedTextViewer.setTopIndex(extension.widgetLine2ModelLine(newTopIndex));
    } else {
        int topIndex = fCachedTextViewer.getTopIndex();
        int newTopIndex = Math.max(0, topIndex - e.count);
        fCachedTextViewer.setTopIndex(newTopIndex);
    }
}

Example 32 with ITextViewerExtension5

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

the class OverviewRuler method toLineNumbers.

/**
 * Translates a given y-coordinate of this ruler into the corresponding
 * document lines. The number of lines depends on the concrete scaling
 * given as the ration between the height of this ruler and the length
 * of the document.
 *
 * @param y_coordinate the y-coordinate
 * @param annotationRect <code>true</code> to only consider the position of a drawn annotation rectangle,
 * 	<code>false</code> to consider the whole line
 * @return the corresponding document lines as {firstLine, lastLine}, or {-1, -1} if no lines correspond to the y-coordinate
 */
private int[] toLineNumbers(int y_coordinate, boolean annotationRect) {
    // this is the inverse of #computeY(int, WidgetInfos)
    WidgetInfos infos = new WidgetInfos(fTextViewer.getTextWidget(), fCanvas);
    if (y_coordinate >= infos.writable || y_coordinate >= infos.bounds.height || y_coordinate < 0)
        return new int[] { -1, -1 };
    if (annotationRect && ANNOTATION_HEIGHT >= infos.bounds.height / infos.maxLines)
        annotationRect = false;
    int[] lines = new int[2];
    int[] pixels;
    int pixelEnd = Math.min(infos.bounds.height, y_coordinate + ANNOTATION_HEIGHT / 2 + 1);
    if (annotationRect) {
        pixels = new int[] { pixelEnd };
    } else {
        int pixelStart = Math.max(y_coordinate - ANNOTATION_HEIGHT / 2 + 1, 0);
        pixels = new int[] { pixelStart, pixelEnd };
    }
    if (infos.bounds.height > infos.writable || infos.invisibleLines <= 0) {
        // yy = Math.max(0, (2 * startLine + 1) * infos.writable / (infos.maxLines * 2) - infos.bounds.y);
        for (int i = 0; i < pixels.length; i++) lines[i] = (int) ((pixels[i] + infos.bounds.y) * infos.maxLines / (double) infos.writable);
        if (DEBUG_TO_DOCUMENT_LINE_NUMBER)
            // $NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
            System.out.println("static y: " + y_coordinate + " => [" + lines[0] + ", " + lines[1] + "]");
    } else if (y_coordinate < infos.thumbHeight / 2) {
        // yy= (int) (startLine * infos.thumbHeight / infos.visibleLines);
        for (int i = 0; i < pixels.length; i++) lines[i] = (int) (pixels[i] * infos.visibleLines / infos.thumbHeight);
        if (DEBUG_TO_DOCUMENT_LINE_NUMBER)
            // $NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
            System.out.println("start  y: " + y_coordinate + " => [" + lines[0] + ", " + lines[1] + "]");
    } else if (infos.bounds.height - 1 - infos.thumbHeight / 2 < y_coordinate) {
        // yy= (int) (infos.bounds.height-1 - (double)infos.thumbHeight / 2 + (startLine - (infos.maxLines - infos.visibleLines / 2) + 1) * infos.thumbHeight / infos.visibleLines);
        for (int i = 0; i < pixels.length; i++) lines[i] = (int) ((pixels[i] - (infos.bounds.height - 1) + (double) infos.thumbHeight / 2) * infos.visibleLines / infos.thumbHeight - 1 + (infos.maxLines - infos.visibleLines / 2));
        if (DEBUG_TO_DOCUMENT_LINE_NUMBER)
            // $NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
            System.out.println("end    y: " + y_coordinate + " => [" + lines[0] + ", " + lines[1] + "]");
    } else {
        // yy= (int) ((double)infos.thumbHeight/2 + (startLine + 1 - infos.visibleLines / 2) * (infos.bounds.height-1 - infos.thumbHeight) / infos.invisibleLines);
        for (int i = 0; i < pixels.length; i++) lines[i] = (int) ((pixels[i] - (double) infos.thumbHeight / 2) * infos.invisibleLines / (infos.bounds.height - 1 - infos.thumbHeight) - 1 + infos.visibleLines / 2);
        if (DEBUG_TO_DOCUMENT_LINE_NUMBER)
            // $NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
            System.out.println("middle y: " + y_coordinate + " => [" + lines[0] + ", " + lines[1] + "]");
    }
    if (y_coordinate < ANNOTATION_HEIGHT && y_coordinate < infos.bounds.y)
        lines[0] = 0;
    else if (lines[0] < 0)
        lines[0] = 0;
    if (annotationRect) {
        int y0 = computeY(lines[0], infos);
        if (y_coordinate < y0 || y0 + ANNOTATION_HEIGHT < y_coordinate) {
            lines[0] = -1;
            lines[1] = -1;
            return lines;
        } else {
            lines[1] = lines[0];
        }
    }
    if (lines[1] > infos.maxLines)
        lines[1] = infos.maxLines;
    if (fTextViewer instanceof ITextViewerExtension5) {
        ITextViewerExtension5 extension = (ITextViewerExtension5) fTextViewer;
        lines[0] = extension.widgetLine2ModelLine(lines[0]);
        lines[1] = extension.widgetLine2ModelLine(lines[1]);
    } else {
        try {
            IRegion visible = fTextViewer.getVisibleRegion();
            int lineNumber = fTextViewer.getDocument().getLineOfOffset(visible.getOffset());
            lines[0] += lineNumber;
            lines[1] += lineNumber;
        } catch (BadLocationException x) {
        }
    }
    if (DEBUG_TO_DOCUMENT_LINE_NUMBER)
        // $NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
        System.out.println("result: [" + lines[0] + ", " + lines[1] + "]");
    return lines;
}