Examples with TextLineMetrics java.awt.font.TextLine.TextLineMetrics used on opensource projects

Example 1 with TextLineMetrics

use of java.awt.font.TextLine.TextLineMetrics in project jdk8u_jdk by JetBrains.

the class TextLayout method getCaretInfoTestInternal.

// this version provides extra info in the float array
// the first two values are as above
// the next four values are the endpoints of the caret, as computed
// using the hit character's offset (baseline + ssoffset) and
// natural ascent and descent.
// these  values are trimmed to the bounds where required to fit,
// but otherwise independent of it.
private float[] getCaretInfoTestInternal(TextHitInfo hit, Rectangle2D bounds) {
    ensureCache();
    checkTextHit(hit);
    float[] info = new float[6];
    // get old data first
    getCaretInfo(hitToCaret(hit), bounds, info);
    // then add our new data
    double iangle, ixbase, p1x, p1y, p2x, p2y;
    int charix = hit.getCharIndex();
    boolean lead = hit.isLeadingEdge();
    boolean ltr = textLine.isDirectionLTR();
    boolean horiz = !isVertical();
    if (charix == -1 || charix == characterCount) {
        // !!! note: want non-shifted, baseline ascent and descent here!
        // TextLine should return appropriate line metrics object for these values
        TextLineMetrics m = textLine.getMetrics();
        boolean low = ltr == (charix == -1);
        iangle = 0;
        if (horiz) {
            p1x = p2x = low ? 0 : m.advance;
            p1y = -m.ascent;
            p2y = m.descent;
        } else {
            p1y = p2y = low ? 0 : m.advance;
            p1x = m.descent;
            p2x = m.ascent;
        }
    } else {
        CoreMetrics thiscm = textLine.getCoreMetricsAt(charix);
        iangle = thiscm.italicAngle;
        ixbase = textLine.getCharLinePosition(charix, lead);
        if (thiscm.baselineIndex < 0) {
            // this is a graphic, no italics, use entire line height for caret
            TextLineMetrics m = textLine.getMetrics();
            if (horiz) {
                p1x = p2x = ixbase;
                if (thiscm.baselineIndex == GraphicAttribute.TOP_ALIGNMENT) {
                    p1y = -m.ascent;
                    p2y = p1y + thiscm.height;
                } else {
                    p2y = m.descent;
                    p1y = p2y - thiscm.height;
                }
            } else {
                p1y = p2y = ixbase;
                p1x = m.descent;
                p2x = m.ascent;
            // !!! top/bottom adjustment not implemented for vertical
            }
        } else {
            float bo = baselineOffsets[thiscm.baselineIndex];
            if (horiz) {
                ixbase += iangle * thiscm.ssOffset;
                p1x = ixbase + iangle * thiscm.ascent;
                p2x = ixbase - iangle * thiscm.descent;
                p1y = bo - thiscm.ascent;
                p2y = bo + thiscm.descent;
            } else {
                ixbase -= iangle * thiscm.ssOffset;
                p1y = ixbase + iangle * thiscm.ascent;
                p2y = ixbase - iangle * thiscm.descent;
                p1x = bo + thiscm.ascent;
                p2x = bo + thiscm.descent;
            }
        }
    }
    info[2] = (float) p1x;
    info[3] = (float) p1y;
    info[4] = (float) p2x;
    info[5] = (float) p2y;
    return info;
}