/**
* Paints a single bar instance.
*
* @param g2 the graphics target.
* @param renderer the renderer.
* @param row the row index.
* @param column the column index.
* @param bar the bar
* @param base indicates which side of the rectangle is the base of the bar.
* @param pegShadow peg the shadow to the base of the bar?
*/
public void paintBarShadow(
Graphics2D g2,
XYBarRenderer renderer,
int row,
int column,
RectangularShape bar,
RectangleEdge base,
boolean pegShadow) {
// handle a special case - if the bar colour has alpha == 0, it is
// invisible so we shouldn't draw any shadow
Paint itemPaint = renderer.getItemPaint(row, column);
if (itemPaint instanceof Color) {
Color c = (Color) itemPaint;
if (c.getAlpha() == 0) {
return;
}
}
RectangularShape shadow =
createShadow(
bar, renderer.getShadowXOffset(), renderer.getShadowYOffset(), base, pegShadow);
g2.setPaint(Color.gray);
g2.fill(shadow);
}
/**
* Paints a single bar instance.
*
* @param g2 the graphics target.
* @param renderer the renderer.
* @param row the row index.
* @param column the column index.
* @param bar the bar
* @param base indicates which side of the rectangle is the base of the bar.
*/
public void paintBar(
Graphics2D g2,
XYBarRenderer renderer,
int row,
int column,
RectangularShape bar,
RectangleEdge base) {
Paint itemPaint = renderer.getItemPaint(row, column);
Color c0, c1;
if (itemPaint instanceof Color) {
c0 = (Color) itemPaint;
c1 = c0.brighter();
} else if (itemPaint instanceof GradientPaint) {
GradientPaint gp = (GradientPaint) itemPaint;
c0 = gp.getColor1();
c1 = gp.getColor2();
} else {
c0 = Color.blue;
c1 = Color.blue.brighter();
}
// as a special case, if the bar colour has alpha == 0, we draw
// nothing.
if (c0.getAlpha() == 0) {
return;
}
if (base == RectangleEdge.TOP || base == RectangleEdge.BOTTOM) {
Rectangle2D[] regions = splitVerticalBar(bar, this.g1, this.g2, this.g3);
GradientPaint gp =
new GradientPaint(
(float) regions[0].getMinX(),
0.0f,
c0,
(float) regions[0].getMaxX(),
0.0f,
Color.white);
g2.setPaint(gp);
g2.fill(regions[0]);
gp =
new GradientPaint(
(float) regions[1].getMinX(),
0.0f,
Color.white,
(float) regions[1].getMaxX(),
0.0f,
c0);
g2.setPaint(gp);
g2.fill(regions[1]);
gp =
new GradientPaint(
(float) regions[2].getMinX(), 0.0f, c0, (float) regions[2].getMaxX(), 0.0f, c1);
g2.setPaint(gp);
g2.fill(regions[2]);
gp =
new GradientPaint(
(float) regions[3].getMinX(), 0.0f, c1, (float) regions[3].getMaxX(), 0.0f, c0);
g2.setPaint(gp);
g2.fill(regions[3]);
} else if (base == RectangleEdge.LEFT || base == RectangleEdge.RIGHT) {
Rectangle2D[] regions = splitHorizontalBar(bar, this.g1, this.g2, this.g3);
GradientPaint gp =
new GradientPaint(
0.0f,
(float) regions[0].getMinY(),
c0,
0.0f,
(float) regions[0].getMaxX(),
Color.white);
g2.setPaint(gp);
g2.fill(regions[0]);
gp =
new GradientPaint(
0.0f,
(float) regions[1].getMinY(),
Color.white,
0.0f,
(float) regions[1].getMaxY(),
c0);
g2.setPaint(gp);
g2.fill(regions[1]);
gp =
new GradientPaint(
0.0f, (float) regions[2].getMinY(), c0, 0.0f, (float) regions[2].getMaxY(), c1);
g2.setPaint(gp);
g2.fill(regions[2]);
gp =
new GradientPaint(
0.0f, (float) regions[3].getMinY(), c1, 0.0f, (float) regions[3].getMaxY(), c0);
g2.setPaint(gp);
g2.fill(regions[3]);
}
// draw the outline...
if (renderer.isDrawBarOutline()
/*&& state.getBarWidth() > renderer.BAR_OUTLINE_WIDTH_THRESHOLD*/ ) {
Stroke stroke = renderer.getItemOutlineStroke(row, column);
Paint paint = renderer.getItemPaint(row, column);
if (stroke != null && paint != null) {
g2.setStroke(stroke);
g2.setPaint(paint);
g2.draw(bar);
}
}
}