Java Code Examples for android.text.TextPaint.getTextAlign()

The following are Jave code examples for showing how to use getTextAlign() of the android.text.TextPaint class. You can vote up the examples you like. Your votes will be used in our system to get more good examples.
Example 1
Project: GitHub   File: Utils.java   Source Code and License Vote up 4 votes
public static void drawMultilineText(Canvas c, StaticLayout textLayout,
                                     float x, float y,
                                     TextPaint paint,
                                     MPPointF anchor, float angleDegrees) {

    float drawOffsetX = 0.f;
    float drawOffsetY = 0.f;
    float drawWidth;
    float drawHeight;

    final float lineHeight = paint.getFontMetrics(mFontMetricsBuffer);

    drawWidth = textLayout.getWidth();
    drawHeight = textLayout.getLineCount() * lineHeight;

    // Android sometimes has pre-padding
    drawOffsetX -= mDrawTextRectBuffer.left;

    // Android does not snap the bounds to line boundaries,
    //  and draws from bottom to top.
    // And we want to normalize it.
    drawOffsetY += drawHeight;

    // To have a consistent point of reference, we always draw left-aligned
    Paint.Align originalTextAlign = paint.getTextAlign();
    paint.setTextAlign(Paint.Align.LEFT);

    if (angleDegrees != 0.f) {

        // Move the text drawing rect in a way that it always rotates around its center
        drawOffsetX -= drawWidth * 0.5f;
        drawOffsetY -= drawHeight * 0.5f;

        float translateX = x;
        float translateY = y;

        // Move the "outer" rect relative to the anchor, assuming its centered
        if (anchor.x != 0.5f || anchor.y != 0.5f) {
            final FSize rotatedSize = getSizeOfRotatedRectangleByDegrees(
                    drawWidth,
                    drawHeight,
                    angleDegrees);

            translateX -= rotatedSize.width * (anchor.x - 0.5f);
            translateY -= rotatedSize.height * (anchor.y - 0.5f);
            FSize.recycleInstance(rotatedSize);
        }

        c.save();
        c.translate(translateX, translateY);
        c.rotate(angleDegrees);

        c.translate(drawOffsetX, drawOffsetY);
        textLayout.draw(c);

        c.restore();
    } else {
        if (anchor.x != 0.f || anchor.y != 0.f) {

            drawOffsetX -= drawWidth * anchor.x;
            drawOffsetY -= drawHeight * anchor.y;
        }

        drawOffsetX += x;
        drawOffsetY += y;

        c.save();

        c.translate(drawOffsetX, drawOffsetY);
        textLayout.draw(c);

        c.restore();
    }

    paint.setTextAlign(originalTextAlign);
}