/**
* ************************************************************** plot
* **************************************************************
*/
public int plot(float[] x, float[] y, String label, int color, int width, PathEffect effect) {
Seria s = new Seria(x, y);
s.mLabel = label;
s.mColor = color;
s.mWidth = width;
s.mEffect = effect;
mData.add(s);
onDataChanged();
return mData.size() - 1;
}
/**
* ************************************************************** put text in axis coordinates
* **************************************************************
*/
public int text(float[] x, float[] y, String[] texts, int color, HALIGN ha, VALIGN va) {
Seria s = new Seria(x, y);
s.mWidth = 0; // we don't want stroke here
if (texts.length != s.sz()) {
throw new InvalidParameterException("x and y must be with the same length");
}
s.mColor = color;
s.texts = texts;
s.hAlign = ha;
s.vAlign = va;
mData.add(s);
onDataChanged();
return mData.size() - 1;
}
/**
* ************************************************************** add image seria
* **************************************************************
*/
public int bitmapScatter(float[] x, float[] y, Bitmap[] bm, String label, HALIGN ha, VALIGN va) {
Seria s = new Seria(x, y);
s.mLabel = label;
s.mWidth = 0; // we don't want stroke here
if (bm.length != s.sz()) {
throw new InvalidParameterException("x and y must be with the same length");
}
s.bms = bm;
s.hAlign = ha;
s.vAlign = va;
mData.add(s);
onDataChanged();
return mData.size() - 1;
}
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();
}
}
}
}