| public drawLine ( float arg0, float arg1, float arg2, float arg3, android arg4 ) : void | ||
| arg0 | float | |
| arg1 | float | |
| arg2 | float | |
| arg3 | float | |
| arg4 | android | |
| return | void | |
void doDraw (Canvas canvas, float[] src, float[] dst)
{
canvas.save ();
mMatrix.setPolyToPoly (src, 0, dst, 0, src.Length >> 1);
canvas.concat (mMatrix);
mPaint.setColor (Color.GRAY);
mPaint.setStyle (Paint.Style.STROKE);
canvas.drawRect (0, 0, 64, 64, mPaint);
canvas.drawLine (0, 0, 64, 64, mPaint);
canvas.drawLine (0, 64, 64, 0, mPaint);
mPaint.setColor (Color.RED);
mPaint.setStyle (Paint.Style.FILL);
// how to draw the text center on our square
// centering in X is easy... use alignment (and X at midpoint)
float x = 64 / 2;
// centering in Y, we need to measure ascent/descent first
float y = 64 / 2 - (mFontMetrics.ascent + mFontMetrics.descent) / 2;
canvas.drawText (src.Length / 2 + "", x, y, mPaint);
canvas.restore ();
}
void drawScene (Canvas canvas)
{
canvas.clipRect (0, 0, 100, 100);
canvas.drawColor (Color.WHITE);
mPaint.setColor (Color.RED);
canvas.drawLine (0, 0, 100, 100, mPaint);
mPaint.setColor (Color.GREEN);
canvas.drawCircle (30, 70, 30, mPaint);
mPaint.setColor (Color.BLUE);
canvas.drawText ("Clipping", 100, 30, mPaint);
}
