public EraserTool(Context context, ToolType toolType) {
super(context, toolType);
mPreviousPaint = new Paint(PaintroidApplication.currentTool.getDrawPaint());
changePaintColor(Color.TRANSPARENT);
mCanvasPaint.setStrokeCap(mPreviousPaint.getStrokeCap());
mCanvasPaint.setStrokeWidth(mPreviousPaint.getStrokeWidth());
}
/**
* Determine the minimum sweep angle that should be allowed for the current settings. If the sweep
* is 360 a complete circle is drawn, if the sweep is 0 nothing is drawn. In some states even if
* the data is say 0 out of 100 and mathematically the sweep angle is 0 we want to draw a point
* anyway which is why this function exists
*
* @return minimum number of degrees allowed in the current state
*/
protected float getMinSweepAngle() {
if (!mSeriesItem.showPointWhenEmpty()) {
return MIN_SWEEP_ANGLE_NONE;
}
if (mSeriesItem.getChartStyle() == SeriesItem.ChartStyle.STYLE_PIE) {
return MIN_SWEEP_ANGLE_PIE;
}
if (mPaint.getStrokeCap() == Paint.Cap.ROUND) {
return MIN_SWEEP_ANGLE;
}
return MIN_SWEEP_ANGLE_FLAT;
}
/**
* @param canvas
* @param ctx
*/
private void drawDrawing(Canvas canvas, DrawingContext ctx) {
/*
* Get draw points.
*/
// Blue inside, black outside
Paint.Cap oldCaps = mPaint.getStrokeCap();
mPaint.setStrokeCap(
Paint.Cap.ROUND); // We use a wide line. Without ROUND the line looks broken.
mPaint.setColor(Color.BLACK);
mPaint.setStrokeWidth(6 * mDipToPix);
mService.getDraw().drawShape(canvas, mPaint, mOrigin);
mPaint.setColor(Color.BLUE);
mPaint.setStrokeWidth(2 * mDipToPix);
mService.getDraw().drawShape(canvas, mPaint, mOrigin);
mPaint.setStrokeCap(oldCaps); // Restore the Cap we had before drawing
}