draw horizontal Aligned Text - Android Graphics

Android examples for Graphics:Canvas

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Description

draw horizontal Aligned Text

Demo Code


import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;

public class Main{
    public static void drawHvAlignedText(Canvas canvas, float x, float y,
            String s, Paint p, Paint.Align horizAlign,
            TextVertAlign vertAlign) {//from   w w w  . j  a  v  a  2s.c om

        // Set horizontal alignment
        p.setTextAlign(horizAlign);

        // Get bounding rectangle - we need its attribute and method values
        Rect r = new Rect();
        p.getTextBounds(s, 0, s.length(), r); // Note: r.top will be negative

        // Compute y-coordinate we'll need for drawing text for specified
        // vertical alignment
        float textX = x;
        float textY = y;
        switch (vertAlign) {
        case Top:
            textY = y - r.top;
            break;
        case Middle:
            textY = y - r.top - r.height() / 2;
            break;
        case Baseline: // Default behavior - do nothing
            break;
        case Bottom:
            textY = y - (r.height() + r.top);
            break;
        }
        canvas.drawText(s, textX, textY, p);
    }
}

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