private void stroke(Seria s, Canvas canvas) {
mPlotPaint.setStyle(Paint.Style.STROKE);
// draw line
if (s.mWidth > 0) {
// create the path
mPath.reset();
mPath.moveTo(calcX(s.x[0]), calcY(s.y[0]));
for (int i = 1; i < s.sz(); i++) {
mPath.lineTo(calcX(s.x[i]), calcY(s.y[i]));
}
// draw the path
mPlotPaint.setColor(s.mColor);
mPlotPaint.setStrokeWidth(s.mWidth);
mPlotPaint.setPathEffect(s.mEffect);
canvas.drawPath(mPath, mPlotPaint);
}
// draw images seria
if (s.bms != null) {
for (int i = 0; i < s.sz(); i++) {
Bitmap bm;
if (s.bms.length > 1) {
bm = s.bms[i];
} else {
bm = s.bms[0];
}
float left = calcX(s.x[i]);
float top = calcY(s.y[i]);
if (s.hAlign == HALIGN.CENTER) {
left -= bm.getWidth() / 2;
} else if (s.hAlign == HALIGN.RIGHT) {
left -= bm.getWidth();
}
if (s.vAlign == VALIGN.CENTER) {
top -= bm.getHeight() / 2;
} else if (s.vAlign == VALIGN.BOTTOM) {
top -= bm.getHeight();
}
canvas.drawBitmap(s.bms[i], left, top, mPlotPaint);
}
}
if (s.texts != null) {
Align align = Align.CENTER;
switch (s.hAlign) {
case LEFT:
align = Align.RIGHT;
case RIGHT:
align = Align.LEFT;
}
mPlotPaint.setTextAlign(align);
mPlotPaint.setStrokeWidth(0);
mPlotPaint.setColor(s.mColor);
for (int i = 0; i < s.sz(); i++) {
float x = calcX(s.x[i]);
float y = calcY(s.y[i]);
switch (s.vAlign) {
case TOP:
y -= mPlotPaint.getTextSize();
case CENTER:
y -= 0.5 * mPlotPaint.getTextSize();
}
if (s.deg != 0) {
canvas.save();
canvas.rotate(s.deg, x, y);
}
canvas.drawText(s.texts[i], x, y, mPlotPaint);
if (s.deg != 0) {
canvas.restore();
}
}
}
}
/**
* Initialize the control. This code is in a separate method so that it can be called from both
* constructors.
*/
private void init() {
// Force the background to software rendering because otherwise the Blur
// filter won't work.
setLayerToSW(this);
// Set up the paint for the label text
mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mTextPaint.setColor(mTextColor);
if (mTextHeight == 0) {
mTextHeight = mTextPaint.getTextSize();
} else {
mTextPaint.setTextSize(mTextHeight);
}
// Set up the paint for the pie slices
mPiePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mPiePaint.setStyle(Paint.Style.FILL);
mPiePaint.setTextSize(mTextHeight);
cSlicePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
cSlicePaint.setStyle(Paint.Style.FILL);
// Set up the paint for the shadow
mShadowPaint = new Paint(0);
mShadowPaint.setColor(0xff101010);
mShadowPaint.setMaskFilter(new BlurMaskFilter(8, BlurMaskFilter.Blur.NORMAL));
// Add a child view to draw the pie. Putting this in a child view
// makes it possible to draw it on a separate hardware layer that rotates
// independently
mPieView = new PieView(getContext());
addView(mPieView);
mPieView.rotateTo(mPieRotation);
// The pointer doesn't need hardware acceleration, but in order to show up
// in front of the pie it also needs to be on a separate view.
mPointerView = new PointerView(getContext());
addView(mPointerView);
// Set up an animator to animate the PieRotation property. This is used to
// correct the pie's orientation after the user lets go of it.
if (Build.VERSION.SDK_INT >= 11) {
mAutoCenterAnimator = ObjectAnimator.ofInt(PieChart.this, "PieRotation", 0);
// Add a listener to hook the onAnimationEnd event so that we can do
// some cleanup when the pie stops moving.
mAutoCenterAnimator.addListener(
new Animator.AnimatorListener() {
public void onAnimationStart(Animator animator) {}
public void onAnimationEnd(Animator animator) {
mPieView.decelerate();
}
public void onAnimationCancel(Animator animator) {}
public void onAnimationRepeat(Animator animator) {}
});
}
// Create a Scroller to handle the fling gesture.
if (Build.VERSION.SDK_INT < 11) {
mScroller = new Scroller(getContext());
} else {
mScroller = new Scroller(getContext(), null, true);
}
// The scroller doesn't have any built-in animation functions--it just supplies
// values when we ask it to. So we have to have a way to call it every frame
// until the fling ends. This code (ab)uses a ValueAnimator object to generate
// a callback on every animation frame. We don't use the animated value at all.
if (Build.VERSION.SDK_INT >= 11) {
mScrollAnimator = ValueAnimator.ofFloat(0, 1);
mScrollAnimator.addUpdateListener(
new ValueAnimator.AnimatorUpdateListener() {
public void onAnimationUpdate(ValueAnimator valueAnimator) {
tickScrollAnimation();
}
});
}
// Create a gesture detector to handle onTouch messages
mDetector = new GestureDetector(PieChart.this.getContext(), new GestureListener());
// Turn off long press--this control doesn't use it, and if long press is enabled,
// you can't scroll for a bit, pause, then scroll some more (the pause is interpreted
// as a long press, apparently)
mDetector.setIsLongpressEnabled(false);
}