615 if(xData != null) xa.invalidateRange(xData);
616 if(yData != null) ya.invalidateRange(yData);
617 }
618 }
619
620 /**
621 * Called to update and layout the plot children. This should include all work to updates nodes representing
622 * the plot on top of the axis and grid lines etc. The origin is the top left of the plot area, the plot area with
623 * can be got by getting the width of the x axis and its height from the height of the y axis.
624 */
625 protected abstract void layoutPlotChildren();
626
627 /** @inheritDoc */
628 @Override protected final void layoutChartChildren(double top, double left, double width, double height) {
629 if(getData() == null) return;
630 if (!rangeValid) {
631 rangeValid = true;
632 if(getData() != null) updateAxisRange();
633 }
634 // snap top and left to pixels
635 top = snapPosition(top);
636 left = snapPosition(left);
637 // get starting stuff
638 final Axis<X> xa = getXAxis();
639 final ObservableList<Axis.TickMark<X>> xaTickMarks = xa.getTickMarks();
640 final Axis<Y> ya = getYAxis();
641 final ObservableList<Axis.TickMark<Y>> yaTickMarks = ya.getTickMarks();
642 // check we have 2 axises and know their sides
643 if (xa == null || ya == null) return;
644 // try and work out width and height of axises
645 double xAxisWidth = 0;
646 double xAxisHeight = 30; // guess x axis height to start with
647 double yAxisWidth = 0;
648 double yAxisHeight = 0;
649 for (int count=0; count<5; count ++) {
650 yAxisHeight = snapSize(height - xAxisHeight);
651 if (yAxisHeight < 0) {
652 yAxisHeight = 0;
653 }
654 yAxisWidth = ya.prefWidth(yAxisHeight);
655 xAxisWidth = snapSize(width - yAxisWidth);
656 if (xAxisWidth < 0) {
657 xAxisWidth = 0;
658 }
659 double newXAxisHeight = xa.prefHeight(xAxisWidth);
660 if (newXAxisHeight == xAxisHeight) break;
661 xAxisHeight = newXAxisHeight;
662 }
663 // round axis sizes up to whole integers to snap to pixel
664 xAxisWidth = Math.ceil(xAxisWidth);
665 xAxisHeight = Math.ceil(xAxisHeight);
666 yAxisWidth = Math.ceil(yAxisWidth);
667 yAxisHeight = Math.ceil(yAxisHeight);
668 // calc xAxis height
669 double xAxisY = 0;
670 switch(xa.getEffectiveSide()) {
671 case TOP:
672 xa.setVisible(true);
673 xAxisY = top+1;
674 top += xAxisHeight;
675 break;
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615 if(xData != null) xa.invalidateRange(xData);
616 if(yData != null) ya.invalidateRange(yData);
617 }
618 }
619
620 /**
621 * Called to update and layout the plot children. This should include all work to updates nodes representing
622 * the plot on top of the axis and grid lines etc. The origin is the top left of the plot area, the plot area with
623 * can be got by getting the width of the x axis and its height from the height of the y axis.
624 */
625 protected abstract void layoutPlotChildren();
626
627 /** @inheritDoc */
628 @Override protected final void layoutChartChildren(double top, double left, double width, double height) {
629 if(getData() == null) return;
630 if (!rangeValid) {
631 rangeValid = true;
632 if(getData() != null) updateAxisRange();
633 }
634 // snap top and left to pixels
635 top = snapPositionY(top);
636 left = snapPositionX(left);
637 // get starting stuff
638 final Axis<X> xa = getXAxis();
639 final ObservableList<Axis.TickMark<X>> xaTickMarks = xa.getTickMarks();
640 final Axis<Y> ya = getYAxis();
641 final ObservableList<Axis.TickMark<Y>> yaTickMarks = ya.getTickMarks();
642 // check we have 2 axises and know their sides
643 if (xa == null || ya == null) return;
644 // try and work out width and height of axises
645 double xAxisWidth = 0;
646 double xAxisHeight = 30; // guess x axis height to start with
647 double yAxisWidth = 0;
648 double yAxisHeight = 0;
649 for (int count=0; count<5; count ++) {
650 yAxisHeight = snapSizeY(height - xAxisHeight);
651 if (yAxisHeight < 0) {
652 yAxisHeight = 0;
653 }
654 yAxisWidth = ya.prefWidth(yAxisHeight);
655 xAxisWidth = snapSizeX(width - yAxisWidth);
656 if (xAxisWidth < 0) {
657 xAxisWidth = 0;
658 }
659 double newXAxisHeight = xa.prefHeight(xAxisWidth);
660 if (newXAxisHeight == xAxisHeight) break;
661 xAxisHeight = newXAxisHeight;
662 }
663 // round axis sizes up to whole integers to snap to pixel
664 xAxisWidth = Math.ceil(xAxisWidth);
665 xAxisHeight = Math.ceil(xAxisHeight);
666 yAxisWidth = Math.ceil(yAxisWidth);
667 yAxisHeight = Math.ceil(yAxisHeight);
668 // calc xAxis height
669 double xAxisY = 0;
670 switch(xa.getEffectiveSide()) {
671 case TOP:
672 xa.setVisible(true);
673 xAxisY = top+1;
674 top += xAxisHeight;
675 break;
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