Method drawParagraph

examples/scenes/src/TextLineScene.java:136–199

(Canvas canvas, String[] texts, Font font, Point cursor)

    }

    public float drawParagraph(Canvas canvas, String[] texts, Font font, Point cursor) {
        float bottom = 0;
        canvas.save();
        for (var text: texts) {
            try (TextStyle defaultTs = new TextStyle().setFontFamily(font.getTypeface().getFamilyName()).setFontSize(36).setColor(0xFFCC3333);
                 ParagraphStyle ps   = new ParagraphStyle();
                 ParagraphBuilder pb = new ParagraphBuilder(ps, fc);)
            {
                pb.pushStyle(defaultTs);
                pb.addText(text);
                try (Paragraph p = pb.build();) {
                    p.layout(Float.POSITIVE_INFINITY);
                    LineMetrics lm = p.getLineMetrics()[0];

                    int offset = p.getGlyphPositionAtCoordinate(cursor.getX(), 0).getPosition();

                    // bounds
                    float lineWidth = (float) lm.getWidth();
                    float lineHeight = (float) lm.getHeight();
                    float baseline = (float) lm.getAscent();
                    canvas.drawRect(Rect.makeXYWH(0, 0, lineWidth, lineHeight), stroke);
                    canvas.drawLine(0, baseline, lineWidth, baseline, stroke);

                    // selection
                    float coord = 0;
                    TextBox[] rects = p.getRectsForRange(0, offset, RectHeightMode.TIGHT, RectWidthMode.TIGHT);
                    for (var rect: rects) {
                        canvas.drawRect(rect.getRect(), selectionFill);
                        coord = rect.getRect().getRight();
                    }

                    // text
                    p.paint(canvas, 0, 0);

                    // coords
                    for (int i = 0; i < text.length() + 1; ++i) {
                        rects = p.getRectsForRange(0, i, RectHeightMode.TIGHT, RectWidthMode.TIGHT);
                        for (var rect: rects) {
                            coord = rect.getRect().getRight();
                            canvas.drawLine(coord, baseline, coord, baseline + 4, stroke);
                        }
                    }

                    // extra info
                    canvas.save();
                    canvas.translate(0, lineHeight + 5);
                    var tableSize = drawTable(canvas, new String[] {
                        "Chars",  text.chars().mapToObj(c -> String.format(c <= 256 ? "%02X" : "%04X", c)).collect(Collectors.joining(" ")),
                        "Coord",  Integer.toString((int) cursor.getX()),
                        "Offset", offset + " " + text.length(),
                    });
                    canvas.restore();

                    float offsetLeft = Math.max(100, Math.max(lineWidth, tableSize.getX())) + 10;
                    canvas.translate(offsetLeft, 0);
                    cursor = cursor.offset(-offsetLeft, 0);
                    bottom = Math.max(bottom, lineHeight + 5 + tableSize.getY());
                }