📄 symbolicaxis.java
字号:
double upperMargin = 0.5;
double lowerMargin = 0.5;
if (autoRangeIncludesZero()) {
if (autoRangeStickyZero()) {
if (upper <= 0.0) {
upper = 0.0;
}
else {
upper = upper + upperMargin;
}
if (lower >= 0.0) {
lower = 0.0;
}
else {
lower = lower - lowerMargin;
}
}
else {
upper = Math.max(0.0, upper + upperMargin);
lower = Math.min(0.0, lower - lowerMargin);
}
}
else {
if (autoRangeStickyZero()) {
if (upper <= 0.0) {
upper = Math.min(0.0, upper + upperMargin);
}
else {
upper = upper + upperMargin * range;
}
if (lower >= 0.0) {
lower = Math.max(0.0, lower - lowerMargin);
}
else {
lower = lower - lowerMargin;
}
}
else {
upper = upper + upperMargin;
lower = lower - lowerMargin;
}
}
setRange(new Range(lower, upper), false, false);
}
}
/**
* Calculates the positions of the tick labels for the axis, storing the results in the
* tick label list (ready for drawing).
*
* @param g2 the graphics device.
* @param state the axis state.
* @param plotArea the area in which the plot (inlcuding axes) should be drawn.
* @param dataArea the area in which the data should be drawn.
* @param edge the location of the axis.
*
* @return A list of ticks.
*/
public List refreshTicks(Graphics2D g2,
AxisState state,
Rectangle2D plotArea,
Rectangle2D dataArea,
RectangleEdge edge) {
List ticks = null;
if (RectangleEdge.isTopOrBottom(edge)) {
ticks = refreshTicksHorizontal(g2, state.getCursor(), plotArea, dataArea, edge);
}
else if (RectangleEdge.isLeftOrRight(edge)) {
ticks = refreshTicksVertical(g2, state.getCursor(), plotArea, dataArea, edge);
}
return ticks;
}
/**
* Calculates the positions of the tick labels for the axis, storing the results in the
* tick label list (ready for drawing).
*
* @param g2 the graphics device.
* @param cursor the cursor position for drawing the axis.
* @param plotArea the area in which the plot (inlcuding axes) should be drawn.
* @param dataArea the area in which the data should be drawn.
* @param edge the location of the axis.
*
* @return The ticks.
*/
public List refreshTicksHorizontal(Graphics2D g2, double cursor,
Rectangle2D plotArea, Rectangle2D dataArea,
RectangleEdge edge) {
List ticks = new java.util.ArrayList();
Font tickLabelFont = getTickLabelFont();
g2.setFont(tickLabelFont);
double size = getTickUnit().getSize();
int count = calculateVisibleTickCount();
double lowestTickValue = calculateLowestVisibleTickValue();
double previousDrawnTickLabelPos = 0.0;
double previousDrawnTickLabelLength = 0.0;
if (count <= ValueAxis.MAXIMUM_TICK_COUNT) {
for (int i = 0; i < count; i++) {
double currentTickValue = lowestTickValue + (i * size);
double xx = valueToJava2D(currentTickValue, dataArea, edge);
String tickLabel;
NumberFormat formatter = getNumberFormatOverride();
if (formatter != null) {
tickLabel = formatter.format(currentTickValue);
}
else {
tickLabel = valueToString(currentTickValue);
}
// avoid to draw overlapping tick labels
Rectangle2D bounds = TextUtilities.getTextBounds(
tickLabel, g2, g2.getFontMetrics()
);
double tickLabelLength = isVerticalTickLabels()
? bounds.getHeight() : bounds.getWidth();
boolean tickLabelsOverlapping = false;
if (i > 0) {
double avgTickLabelLength = (previousDrawnTickLabelLength + tickLabelLength)
/ 2.0;
if (Math.abs(xx - previousDrawnTickLabelPos) < avgTickLabelLength) {
tickLabelsOverlapping = true;
}
}
if (tickLabelsOverlapping) {
tickLabel = ""; // don't draw this tick label
}
else {
// remember these values for next comparison
previousDrawnTickLabelPos = xx;
previousDrawnTickLabelLength = tickLabelLength;
}
TextAnchor anchor = null;
TextAnchor rotationAnchor = null;
double angle = 0.0;
if (isVerticalTickLabels()) {
anchor = TextAnchor.CENTER_RIGHT;
rotationAnchor = TextAnchor.CENTER_RIGHT;
if (edge == RectangleEdge.TOP) {
angle = Math.PI / 2.0;
}
else {
angle = -Math.PI / 2.0;
}
}
else {
if (edge == RectangleEdge.TOP) {
anchor = TextAnchor.BOTTOM_CENTER;
rotationAnchor = TextAnchor.BOTTOM_CENTER;
}
else {
anchor = TextAnchor.TOP_CENTER;
rotationAnchor = TextAnchor.TOP_CENTER;
}
}
Tick tick = new NumberTick(
new Double(currentTickValue), tickLabel, anchor, rotationAnchor, angle
);
ticks.add(tick);
}
}
return ticks;
}
/**
* Calculates the positions of the tick labels for the axis, storing the results in the
* tick label list (ready for drawing).
*
* @param g2 the graphics device.
* @param cursor the cursor position for drawing the axis.
* @param plotArea the area in which the plot and the axes should be drawn.
* @param dataArea the area in which the plot should be drawn.
* @param edge the location of the axis.
*
* @return The ticks.
*/
public List refreshTicksVertical(Graphics2D g2, double cursor,
Rectangle2D plotArea, Rectangle2D dataArea,
RectangleEdge edge) {
List ticks = new java.util.ArrayList();
Font tickLabelFont = getTickLabelFont();
g2.setFont(tickLabelFont);
double size = getTickUnit().getSize();
int count = calculateVisibleTickCount();
double lowestTickValue = calculateLowestVisibleTickValue();
double previousDrawnTickLabelPos = 0.0;
double previousDrawnTickLabelLength = 0.0;
if (count <= ValueAxis.MAXIMUM_TICK_COUNT) {
for (int i = 0; i < count; i++) {
double currentTickValue = lowestTickValue + (i * size);
double yy = valueToJava2D(currentTickValue, dataArea, edge);
String tickLabel;
NumberFormat formatter = getNumberFormatOverride();
if (formatter != null) {
tickLabel = formatter.format(currentTickValue);
}
else {
tickLabel = valueToString(currentTickValue);
}
// avoid to draw overlapping tick labels
Rectangle2D bounds = TextUtilities.getTextBounds(
tickLabel, g2, g2.getFontMetrics()
);
double tickLabelLength = isVerticalTickLabels()
? bounds.getWidth() : bounds.getHeight();
boolean tickLabelsOverlapping = false;
if (i > 0) {
double avgTickLabelLength =
(previousDrawnTickLabelLength + tickLabelLength) / 2.0;
if (Math.abs(yy - previousDrawnTickLabelPos) < avgTickLabelLength) {
tickLabelsOverlapping = true;
}
if (tickLabelsOverlapping) {
tickLabel = ""; // don't draw this tick label
}
else {
// remember these values for next comparison
previousDrawnTickLabelPos = yy;
previousDrawnTickLabelLength = tickLabelLength;
}
}
TextAnchor anchor = null;
TextAnchor rotationAnchor = null;
double angle = 0.0;
if (isVerticalTickLabels()) {
anchor = TextAnchor.BOTTOM_CENTER;
rotationAnchor = TextAnchor.BOTTOM_CENTER;
if (edge == RectangleEdge.LEFT) {
angle = -Math.PI / 2.0;
}
else {
angle = Math.PI / 2.0;
}
}
else {
if (edge == RectangleEdge.LEFT) {
anchor = TextAnchor.CENTER_RIGHT;
rotationAnchor = TextAnchor.CENTER_RIGHT;
}
else {
anchor = TextAnchor.CENTER_LEFT;
rotationAnchor = TextAnchor.CENTER_LEFT;
}
}
Tick tick = new NumberTick(
new Double(currentTickValue), tickLabel, anchor, rotationAnchor, angle
);
ticks.add(tick);
}
}
return ticks;
}
/**
* Converts a value to a string, using the list of symbolic values.
*
* @param value value to convert.
*
* @return the symbolic value.
*/
public String valueToString(double value) {
String strToReturn;
try {
strToReturn = (String) this.symbolicValue.get((int) value);
}
catch (IndexOutOfBoundsException ex) {
strToReturn = new String("");
}
return strToReturn;
}
/**
* Draws the symbolic grid lines.
* <P>
* The colors are consecutively the color specified by
* <CODE>symbolicGridPaint<CODE>
* (<CODE>DEFAULT_SYMBOLIC_GRID_LINE_PAINT</CODE> by default) and white.
* or if <CODE>firstGridLineIsDark</CODE> is <CODE>true</CODE> white and
* the color specified by <CODE>symbolicGridPaint<CODE>.
*
* @param g2 the graphics device.
* @param drawArea the area within which the chart should be drawn.
* @param plotArea the area within which the plot should be drawn (a
* subset of the drawArea).
* @param firstGridLineIsDark True: the first symbolic grid line take the
* color of <CODE>symbolicGridPaint<CODE>.
* False: the first symbolic grid line is white.
* @param ticks a list of ticks.
*/
public void drawSymbolicGridLinesVertical(Graphics2D g2, Rectangle2D drawArea,
Rectangle2D plotArea, boolean firstGridLineIsDark,
List ticks) {
this.symbolicGridLineList = new Vector(ticks.size());
boolean currentGridLineIsDark = firstGridLineIsDark;
double xx = plotArea.getX();
double yy1, yy2;
//gets the outline stroke width of the plot
double outlineStrokeWidth;
if (getPlot().getOutlineStroke() != null) {
outlineStrokeWidth = ((BasicStroke) getPlot().getOutlineStroke()).getLineWidth();
}
else {
outlineStrokeWidth = 1d;
}
Iterator iterator = ticks.iterator();
ValueTick tick;
Rectangle2D symbolicGridLine;
while (iterator.hasNext()) {
tick = (ValueTick) iterator.next();
yy1 = valueToJava2D(tick.getValue() + 0.5d, plotArea, RectangleEdge.LEFT);
yy2 = valueToJava2D(tick.getValue() - 0.5d, plotArea, RectangleEdge.LEFT);
if (currentGridLineIsDark) {
g2.setPaint(this.symbolicGridPaint);
//g2.setXORMode((Color) getSymbolicGridPaint());
}
else {
g2.setPaint(Color.white);
//g2.setXORMode(Color.white);
}
symbolicGridLine = new Rectangle2D.Double(xx + outlineStrokeWidth,
yy1, plotArea.getMaxX() - xx - outlineStrokeWidth, yy2 - yy1);
g2.fill(symbolicGridLine);
this.symbolicGridLineList.add(symbolicGridLine);
currentGridLineIsDark = !currentGridLineIsDark;
}
g2.setPaintMode();
}
}
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -