SelectableRoundedImageView.java 文件源码

private void adjustCanvasForBorder(Canvas canvas) {
    float[] values = new float[9];
    canvas.getMatrix().getValues(values);
    float scaleFactorX = values[0];
    float scaleFactorY = values[4];
    float translateX = values[2];
    float translateY = values[5];
    float newScaleX = this.mBounds.width() / ((this.mBounds.width() + this.mBorderWidth)
            + this.mBorderWidth);
    float newScaleY = this.mBounds.height() / ((this.mBounds.height() + this
            .mBorderWidth) + this.mBorderWidth);
    canvas.scale(newScaleX, newScaleY);
    if (ScaleType.FIT_START == this.mScaleType || ScaleType.FIT_END == this.mScaleType ||
            ScaleType.FIT_XY == this.mScaleType || ScaleType.FIT_CENTER == this
            .mScaleType || ScaleType.CENTER_INSIDE == this.mScaleType || ScaleType.MATRIX
            == this.mScaleType) {
        canvas.translate(this.mBorderWidth, this.mBorderWidth);
    } else if (ScaleType.CENTER == this.mScaleType || ScaleType.CENTER_CROP == this
            .mScaleType) {
        canvas.translate((-translateX) / (newScaleX * scaleFactorX), (-translateY) /
                (newScaleY * scaleFactorY));
        canvas.translate(-(this.mBounds.left - this.mBorderWidth), -(this.mBounds.top -
                this.mBorderWidth));
    }
}