private Item createItem(String label, float percent, int sliceColor, int itemColor) {
Item it = new Item();
it.mLabel = label;
it.mItemColor = itemColor;
it.cSliceColor = sliceColor;
it.cPercent = percent;
// Log.d(TAG, "Percent for "+it.mLabel+": "+it.cPercent);
// Calculate the highlight color. Saturate at 0xff to make sure that high values
// don't result in aliasing.
it.mItemHighlight =
Color.argb(
0xff,
Math.min((int) (mHighlightStrength * (float) Color.red(itemColor)), 0xff),
Math.min((int) (mHighlightStrength * (float) Color.green(itemColor)), 0xff),
Math.min((int) (mHighlightStrength * (float) Color.blue(itemColor)), 0xff));
it.cSliceHighlight =
Color.argb(
0xff,
Math.min((int) (mHighlightStrength * (float) Color.red(sliceColor)), 0xff),
Math.min((int) (mHighlightStrength * (float) Color.green(sliceColor)), 0xff),
Math.min((int) (mHighlightStrength * (float) Color.blue(sliceColor)), 0xff));
float centerX = mPieBounds.width() / 2;
float centerY = mPieBounds.height() / 2;
float itemW = (mPieBounds.width() / 2) * it.cPercent;
float itemH = (mPieBounds.height() / 2) * it.cPercent;
it.cSliceBounds = new RectF(centerX - itemW, centerY - itemH, centerX + itemW, centerY + itemH);
return it;
}
public SVGTileProvider(File file, float dpi) throws IOException {
mScale = Math.round(dpi + .3f); // Make it look nice on N7 (1.3 dpi)
mDimension = BASE_TILE_SIZE * mScale;
mPool = new TileGeneratorPool(POOL_MAX_SIZE);
SVG svg = new SVGBuilder().readFromInputStream(new FileInputStream(file)).build();
mSvgPicture = svg.getPicture();
RectF limits = svg.getLimits();
// These values map the SVG file to world coordinates.
// See: http://stackoverflow.com/questions/21167584/google-io-2013-app-mystery-values
mBaseMatrix = new Matrix();
mBaseMatrix.setPolyToPoly(
new float[] {
0,
0, // North-West
limits.width(),
0, // North-East
limits.width(),
limits.height() // South-East
},
0,
BuildConfig.MAP_FLOORPLAN_MAPPING,
0,
3);
}
/** Do all of the recalculations needed when the data array changes. */
private void onDataChanged() {
int angle = 360 / mData.size();
// This is the extra degrees that cannot be equally divided by the number of sides
int extra = 360 % mData.size();
// When the data changes, we have to recalculate
// all of the angles.
int currentAngle = 0;
for (Item it : mData) {
// Adds the extra degrees to the last slice to ensue no gaps
if (mData.get(mData.size() - 1).mLabel.equals(it.mLabel)) {
it.mEndAngle = currentAngle + angle + extra;
} else {
it.mEndAngle = currentAngle + angle;
}
it.mStartAngle = currentAngle;
currentAngle = it.mEndAngle;
// Recalculate the gradient shaders. There are
// three values in this gradient, even though only
// two are necessary, in order to work around
// a bug in certain versions of the graphics engine
// that expects at least three values if the
// positions array is non-null.
//
it.mItemShader =
new SweepGradient(
mPieBounds.width() / 2.0f,
mPieBounds.height() / 2.0f,
new int[] {
it.mItemHighlight, it.mItemHighlight, it.mItemColor, it.mItemColor,
},
new float[] {
0,
(float) (360 - it.mEndAngle) / 360.0f,
(float) (360 - it.mStartAngle) / 360.0f,
1.0f
});
it.cSliceShader =
new SweepGradient(
mPieBounds.width() / 2.0f,
mPieBounds.height() / 2.0f,
new int[] {
it.cSliceHighlight, it.cSliceHighlight, it.cSliceColor, it.cSliceColor,
},
new float[] {
0,
(float) (360 - it.mEndAngle) / 360.0f,
(float) (360 - it.mStartAngle) / 360.0f,
1.0f
});
}
calcCurrentItem();
onScrollFinished();
}
// Grows the cropping rectange by (dx, dy) in image space.
void growBy(float dx, float dy) {
if (mMaintainAspectRatio) {
if (dx != 0) {
dy = dx / mInitialAspectRatio;
} else if (dy != 0) {
dx = dy * mInitialAspectRatio;
}
}
// Don't let the cropping rectangle grow too fast.
// Grow at most half of the difference between the image rectangle and
// the cropping rectangle.
RectF r = new RectF(mCropRect);
if (dx > 0F && r.width() + 2 * dx > mImageRect.width()) {
float adjustment = (mImageRect.width() - r.width()) / 2F;
dx = adjustment;
if (mMaintainAspectRatio) {
dy = dx / mInitialAspectRatio;
}
}
if (dy > 0F && r.height() + 2 * dy > mImageRect.height()) {
float adjustment = (mImageRect.height() - r.height()) / 2F;
dy = adjustment;
if (mMaintainAspectRatio) {
dx = dy * mInitialAspectRatio;
}
}
r.inset(-dx, -dy);
// Don't let the cropping rectangle shrink too fast.
final float widthCap = 25F;
if (r.width() < widthCap) {
r.inset(-(widthCap - r.width()) / 2F, 0F);
}
float heightCap = mMaintainAspectRatio ? (widthCap / mInitialAspectRatio) : widthCap;
if (r.height() < heightCap) {
r.inset(0F, -(heightCap - r.height()) / 2F);
}
// Put the cropping rectangle inside the image rectangle.
if (r.left < mImageRect.left) {
r.offset(mImageRect.left - r.left, 0F);
} else if (r.right > mImageRect.right) {
r.offset(-(r.right - mImageRect.right), 0);
}
if (r.top < mImageRect.top) {
r.offset(0F, mImageRect.top - r.top);
} else if (r.bottom > mImageRect.bottom) {
r.offset(0F, -(r.bottom - mImageRect.bottom));
}
mCropRect.set(r);
mDrawRect = computeLayout();
mContext.invalidate();
}
public PointF getElementCoordinates(
float height, float width, RectF viewRect, PositionMetrics metrics) {
float x = metrics.getXPositionMetric().getPixelValue(viewRect.width()) + viewRect.left;
float y = metrics.getYPositionMetric().getPixelValue(viewRect.height()) + viewRect.top;
PointF point = new PointF(x, y);
return PixelUtils.sub(point, getAnchorOffset(width, height, metrics.getAnchor()));
}
public SVGTileProvider(File file, float dpi) throws IOException {
mScale = Math.round(dpi + .3f); // Make it look nice on N7 (1.3 dpi)
mDimension = BASE_TILE_SIZE * mScale;
mPool = new TileGeneratorPool(POOL_MAX_SIZE);
SVG svg = new SVGBuilder().readFromInputStream(new FileInputStream(file)).build();
mSvgPicture = svg.getPicture();
RectF limits = svg.getLimits();
mBaseMatrix = new Matrix();
mBaseMatrix.setPolyToPoly(
new float[] {0, 0, limits.width(), 0, limits.width(), limits.height()},
0,
new float[] {
40.95635986328125f, 98.94217824936158f,
40.95730018615723f, 98.94123077396628f,
40.95791244506836f, 98.94186019897214f
},
0,
3);
}
private int calcX(float x) {
RectF r = mPlotBounds;
return Math.round(r.left + r.width() * (x - getXMin()) / (getXMax() - getXMin()));
}
public static PointF getAnchorCoordinates(RectF widgetRect, Anchor anchor) {
return PixelUtils.add(
new PointF(widgetRect.left, widgetRect.top),
getAnchorOffset(widgetRect.width(), widgetRect.height(), anchor));
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
Log.d(TAG, "Slice Count: " + mData.size());
if (mData.size() > 0) {
//
// Set dimensions for text, pie chart, etc
//
// Account for padding
float xpad = (float) (getPaddingLeft() + getPaddingRight());
float ypad = (float) (getPaddingTop() + getPaddingBottom());
// Account for the label
if (mShowText) xpad += mTextWidth;
float ww = (float) w - xpad;
float hh = (float) h - ypad;
// Figure out how big we can make the pie.
float diameter = Math.min(ww, hh);
mPieBounds = new RectF(0.0f, 0.0f, diameter, diameter);
mPieBounds.offsetTo(getPaddingLeft(), getPaddingTop());
// Log.d(TAG, "mPieBounds>> "+mPieBounds);
mPointerY = mTextY - (mTextHeight / 2.0f);
float pointerOffset = mPieBounds.centerY() - mPointerY;
// Make adjustments based on text position
if (mTextPos == TEXTPOS_LEFT) {
mTextPaint.setTextAlign(Paint.Align.RIGHT);
if (mShowText) mPieBounds.offset(mTextWidth, 0.0f);
mTextX = mPieBounds.left;
if (pointerOffset < 0) {
pointerOffset = -pointerOffset;
mCurrentItemAngle = 225;
} else {
mCurrentItemAngle = 135;
}
mPointerX = mPieBounds.centerX() - pointerOffset;
} else {
mTextPaint.setTextAlign(Paint.Align.LEFT);
mTextX = mPieBounds.right;
if (pointerOffset < 0) {
pointerOffset = -pointerOffset;
mCurrentItemAngle = 315;
} else {
mCurrentItemAngle = 45;
}
mPointerX = mPieBounds.centerX() + pointerOffset;
}
mShadowBounds =
new RectF(
mPieBounds.left + 10,
mPieBounds.bottom + 10,
mPieBounds.right - 10,
mPieBounds.bottom + 20);
// Lay out the child view that actually draws the pie.
mPieView.layout(
(int) mPieBounds.left,
(int) mPieBounds.top,
(int) mPieBounds.right,
(int) mPieBounds.bottom);
mPieView.setPivot(mPieBounds.width() / 2, mPieBounds.height() / 2);
mPointerView.layout(0, 0, w, h);
onDataChanged();
}
}