Method paintImpl

examples/dashboard/java/PanelTextInput.java:114–191

(Canvas canvas, int width, int height, float scale)

    }

    @Override
    public void paintImpl(Canvas canvas, int width, int height, float scale) {
        var capHeight = Example.FONT12.getMetrics().getCapHeight();
        var padding = (int) 8 * scale;
        lastInputHeight = (int) (height - capHeight - 3 * padding);

        // keys
        try (var bg = new Paint().setColor(0x40000000);
             var fg = new Paint().setColor(0xFFFFFFFF); )
        {
            var x = 0;
            var y = lastInputHeight + padding;
            for (var key: keys) {
                try (var line = TextLine.make(key, Example.FONT12); ) {
                    canvas.drawRRect(RRect.makeXYWH(x, y, line.getWidth() + 2 * padding, capHeight + 2 * padding, 4 * scale), bg);
                    canvas.drawTextLine(line, x + padding, y + capHeight + padding, fg);
                    x += line.getWidth() + 3 * padding;
                }
            }
        }

        // text input
        try (var paint = new Paint(); ) {
            canvas.save();
            paint.setColor(0xFFFFFFFF);
            canvas.drawRRect(RRect.makeXYWH(0, 0, width, lastInputHeight, 4 * scale), paint);

            Font font = Example.FONT24;
            FontMetrics metrics = font.getMetrics();

            var y = lastInputHeight - Example.PADDING - metrics.getDescent();
            var lines = text.split("\n", -1);
            var i = lines.length - 1;

            // Last line
            try (var line = TextLine.make(lines[i], font)) {
                canvas.save();
                canvas.translate(Example.PADDING, y);
                paint.setColor(0xFF000000);
                canvas.drawTextLine(line, 0, 0, paint);
                canvas.translate(line.getWidth(), 0);

                // marked text
                paint.setColor(0xFF0087D8);
                if (lastMarked != null) {

                    try (var marked = TextLine.make(lastMarked.getText(), font)) {
                        canvas.drawTextLine(marked, 0, 0, paint);
                        var start = marked.getCoordAtOffset(lastMarked.getSelectionStart());
                        var end = marked.getCoordAtOffset(lastMarked.getSelectionEnd());
                        if (0 < start - 1 * scale)
                            canvas.drawRect(Rect.makeLTRB(0, 2 * scale, start - 1 * scale, 4 * scale), paint);
                        if (start + 1 * scale < end - 1 * scale)
                            canvas.drawRect(Rect.makeLTRB(start + 1 * scale, 2 * scale, end - 1 * scale, 6 * scale), paint);
                        if (end + 1 * scale < marked.getWidth())
                            canvas.drawRect(Rect.makeLTRB(end + 1 * scale, 2 * scale, marked.getWidth(), 4 * scale), paint);

                        canvas.translate(marked.getWidth(), 0);