Java RectangleEdge.TOP属性代码示例

/**
 * Returns the category label position specification for an axis at the 
 * given location.
 * 
 * @param edge  the axis location.
 * 
 * @return The category label position specification.
 */
public CategoryLabelPosition getLabelPosition(RectangleEdge edge) {
    CategoryLabelPosition result = null;
    if (edge == RectangleEdge.TOP) {
        result = this.positionForAxisAtTop;
    }
    else if (edge == RectangleEdge.BOTTOM) {
        result = this.positionForAxisAtBottom;
    }
    else if (edge == RectangleEdge.LEFT) {
        result = this.positionForAxisAtLeft;
    }
    else if (edge == RectangleEdge.RIGHT) {
        result = this.positionForAxisAtRight;
    }
    return result;
}
 

/**
 * Adds an axis to the collection.
 * 
 * @param axis  the axis (<code>null</code> not permitted).
 * @param edge  the edge of the plot that the axis should be drawn on 
 *              (<code>null</code> not permitted).
 */
public void add(Axis axis, RectangleEdge edge) {
    if (axis == null) {
        throw new IllegalArgumentException("Null 'axis' argument.");   
    }
    if (edge == null) {
        throw new IllegalArgumentException("Null 'edge' argument.");   
    }
    if (edge == RectangleEdge.TOP) {
        this.axesAtTop.add(axis);
    }
    else if (edge == RectangleEdge.BOTTOM) {
        this.axesAtBottom.add(axis);
    }
    else if (edge == RectangleEdge.LEFT) {
        this.axesAtLeft.add(axis);
    }
    else if (edge == RectangleEdge.RIGHT) {
        this.axesAtRight.add(axis);
    }
}
 

/**
 * Adds a block to the arrangement manager at the specified edge.
 * 
 * @param block  the block (<code>null</code> permitted).
 * @param key  the edge (an instance of {@link RectangleEdge}) or 
 *             <code>null</code> for the center block.
 */
public void add(Block block, Object key) {
    
    if (key == null) {
        this.centerBlock = block;
    }
    else {
        RectangleEdge edge = (RectangleEdge) key;
        if (edge == RectangleEdge.TOP) {
            this.topBlock = block;
        }
        else if (edge == RectangleEdge.BOTTOM) {
            this.bottomBlock = block;
        }
        else if (edge == RectangleEdge.LEFT) {
            this.leftBlock = block;
        }
        else if (edge == RectangleEdge.RIGHT) {
            this.rightBlock = block;
        }
    }
}
 

/**
 * Calculates the size (width or height, depending on the location of the 
 * axis) of a category.
 *
 * @param categoryCount  the number of categories.
 * @param area  the area within which the categories will be drawn.
 * @param edge  the axis location.
 *
 * @return The category size.
 */
protected double calculateCategorySize(int categoryCount, Rectangle2D area,
                                       RectangleEdge edge) {

    double result = 0.0;
    double available = 0.0;

    if ((edge == RectangleEdge.TOP) || (edge == RectangleEdge.BOTTOM)) {
        available = area.getWidth();
    }
    else if ((edge == RectangleEdge.LEFT) 
            || (edge == RectangleEdge.RIGHT)) {
        available = area.getHeight();
    }
    if (categoryCount > 1) {
        result = available * (1 - getLowerMargin() - getUpperMargin() 
                 - getCategoryMargin());
        result = result / categoryCount;
    }
    else {
        result = available * (1 - getLowerMargin() - getUpperMargin());
    }
    return result;

}
 

/**
 * Draws an axis line at the current cursor position and edge.
 * 
 * @param g2  the graphics device.
 * @param cursor  the cursor position.
 * @param dataArea  the data area.
 * @param edge  the edge.
 */
protected void drawAxisLine(Graphics2D g2, double cursor,
        Rectangle2D dataArea, RectangleEdge edge) {
    
    Line2D axisLine = null;
    if (edge == RectangleEdge.TOP) {
        axisLine = new Line2D.Double(dataArea.getX(), cursor, 
                dataArea.getMaxX(), cursor);  
    }
    else if (edge == RectangleEdge.BOTTOM) {
        axisLine = new Line2D.Double(dataArea.getX(), cursor, 
                dataArea.getMaxX(), cursor);  
    }
    else if (edge == RectangleEdge.LEFT) {
        axisLine = new Line2D.Double(cursor, dataArea.getY(), cursor, 
                dataArea.getMaxY());  
    }
    else if (edge == RectangleEdge.RIGHT) {
        axisLine = new Line2D.Double(cursor, dataArea.getY(), cursor, 
                dataArea.getMaxY());  
    }
    g2.setPaint(this.axisLinePaint);
    g2.setStroke(this.axisLineStroke);
    g2.draw(axisLine);
    
}
 

/**
 * Calculates the reserved area.
 * 
 * @param area  the area.
 * @param edge  the edge.
 * 
 * @return The reserved area.
 */
public Rectangle2D reserved(Rectangle2D area, RectangleEdge edge) {
    Rectangle2D result = null;
    if (edge == RectangleEdge.TOP) {
        result = new Rectangle2D.Double(area.getX(), area.getY(),
                                        area.getWidth(), this.top);
    }
    else if (edge == RectangleEdge.BOTTOM) {
        result = new Rectangle2D.Double(area.getX(), area.getMaxY() - this.top,
                                        area.getWidth(), this.bottom);
    }
    else if (edge == RectangleEdge.LEFT) {
        result = new Rectangle2D.Double(area.getX(), area.getY(),
                                        this.left, area.getHeight());
    }
    else if (edge == RectangleEdge.RIGHT) {
        result = new Rectangle2D.Double(area.getMaxX() - this.right, area.getY(),
                                        this.right, area.getHeight());
    }
    return result;
}
 

/**
 * Returns the starting coordinate for the specified category.
 *
 * @param category  the category.
 * @param categoryCount  the number of categories.
 * @param area  the data area.
 * @param edge  the axis location.
 *
 * @return The coordinate.
 * 
 * @see #getCategoryMiddle(int, int, Rectangle2D, RectangleEdge)
 * @see #getCategoryEnd(int, int, Rectangle2D, RectangleEdge)
 */
public double getCategoryStart(int category, int categoryCount, 
                               Rectangle2D area,
                               RectangleEdge edge) {

    double result = 0.0;
    if ((edge == RectangleEdge.TOP) || (edge == RectangleEdge.BOTTOM)) {
        result = area.getX() + area.getWidth() * getLowerMargin();
    }
    else if ((edge == RectangleEdge.LEFT) 
            || (edge == RectangleEdge.RIGHT)) {
        result = area.getMinY() + area.getHeight() * getLowerMargin();
    }

    double categorySize = calculateCategorySize(categoryCount, area, edge);
    double categoryGapWidth = calculateCategoryGapSize(categoryCount, area,
            edge);

    result = result + category * (categorySize + categoryGapWidth);
    return result;
    
}
 

/**
 * Calculates the anchor point for a tick label.
 * 
 * @param tick  the tick.
 * @param cursor  the cursor.
 * @param dataArea  the data area.
 * @param edge  the edge on which the axis is drawn.
 * 
 * @return  the x and y coordinates of the anchor point.
 */
protected float[] calculateAnchorPoint(ValueTick tick, 
                                       double cursor, 
                                       Rectangle2D dataArea, 
                                       RectangleEdge edge) {

    float[] result = new float[2];
    if (edge == RectangleEdge.TOP) {
        result[0] = (float) this.valueToJava2D(tick.getValue(), dataArea, edge);
        result[1] = (float) (cursor - getTickLabelInsets().bottom - 2.0);    
    }
    else if (edge == RectangleEdge.BOTTOM) {
        result[0] = (float) this.valueToJava2D(tick.getValue(), dataArea, edge);
        result[1] = (float) (cursor + getTickLabelInsets().top + 2.0);                
    }
    else if (edge == RectangleEdge.LEFT) {
        result[0] = (float) (cursor - getTickLabelInsets().left - 2.0);    
        result[1] = (float) this.valueToJava2D(tick.getValue(), dataArea, edge);
    }
    else if (edge == RectangleEdge.RIGHT) {
        result[0] = (float) (cursor + getTickLabelInsets().right + 2.0);    
        result[1] = (float) this.valueToJava2D(tick.getValue(), dataArea, edge);
    }
    return result;
}
 

/**
 * Returns the category label position specification for an axis at the given location.
 * 
 * @param edge  the axis location.
 * 
 * @return the category label position specification.
 */
public CategoryLabelPosition getLabelPosition(RectangleEdge edge) {
    CategoryLabelPosition result = null;
    if (edge == RectangleEdge.TOP) {
        result = this.positionForAxisAtTop;
    }
    else if (edge == RectangleEdge.BOTTOM) {
        result = this.positionForAxisAtBottom;
    }
    else if (edge == RectangleEdge.LEFT) {
        result = this.positionForAxisAtLeft;
    }
    else if (edge == RectangleEdge.RIGHT) {
        result = this.positionForAxisAtRight;
    }
    return result;
}
 

/**
 * Calculates the size (width or height, depending on the location of the 
 * axis) of a category gap.
 *
 * @param categoryCount  the number of categories.
 * @param area  the area within which the categories will be drawn.
 * @param edge  the axis location.
 *
 * @return The category gap width.
 */
protected double calculateCategoryGapSize(int categoryCount, 
                                          Rectangle2D area,
                                          RectangleEdge edge) {

    double result = 0.0;
    double available = 0.0;

    if ((edge == RectangleEdge.TOP) || (edge == RectangleEdge.BOTTOM)) {
        available = area.getWidth();
    }
    else if ((edge == RectangleEdge.LEFT) 
            || (edge == RectangleEdge.RIGHT)) {
        available = area.getHeight();
    }

    if (categoryCount > 1) {
        result = available * getCategoryMargin() / (categoryCount - 1);
    }

    return result;

}
 

/**
 * Calculates the reserved area.
 * 
 * @param area  the area.
 * @param edge  the edge.
 * 
 * @return The reserved area.
 */
public Rectangle2D reserved(Rectangle2D area, RectangleEdge edge) {
    Rectangle2D result = null;
    if (edge == RectangleEdge.TOP) {
        result = new Rectangle2D.Double(
            area.getX(), area.getY(), area.getWidth(), this.top
        );
    }
    else if (edge == RectangleEdge.BOTTOM) {
        result = new Rectangle2D.Double(
            area.getX(), area.getMaxY() - this.top,
            area.getWidth(), this.bottom
        );
    }
    else if (edge == RectangleEdge.LEFT) {
        result = new Rectangle2D.Double(
            area.getX(), area.getY(), this.left, area.getHeight()
        );
    }
    else if (edge == RectangleEdge.RIGHT) {
        result = new Rectangle2D.Double(
            area.getMaxX() - this.right, area.getY(),
            this.right, area.getHeight()
        );
    }
    return result;
}
 

/**
 * Resolves a domain axis location for a given plot orientation.
 *
 * @param location  the location (<code>null</code> not permitted).
 * @param orientation  the orientation (<code>null</code> not permitted).
 *
 * @return The edge (never <code>null</code>).
 */
public static RectangleEdge resolveDomainAxisLocation(
        AxisLocation location, PlotOrientation orientation) {
    
    if (location == null) {
        throw new IllegalArgumentException("Null 'location' argument.");   
    }
    if (orientation == null) {
        throw new IllegalArgumentException("Null 'orientation' argument.");
    }

    RectangleEdge result = null;
    
    if (location == AxisLocation.TOP_OR_RIGHT) {
        if (orientation == PlotOrientation.HORIZONTAL) {
            result = RectangleEdge.RIGHT;
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            result = RectangleEdge.TOP;
        }
    }
    else if (location == AxisLocation.TOP_OR_LEFT) {
        if (orientation == PlotOrientation.HORIZONTAL) {
            result = RectangleEdge.LEFT;
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            result = RectangleEdge.TOP;
        }
    }
    else if (location == AxisLocation.BOTTOM_OR_RIGHT) {
        if (orientation == PlotOrientation.HORIZONTAL) {
            result = RectangleEdge.RIGHT;
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            result = RectangleEdge.BOTTOM;
        }
    }
    else if (location == AxisLocation.BOTTOM_OR_LEFT) {
        if (orientation == PlotOrientation.HORIZONTAL) {
            result = RectangleEdge.LEFT;
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            result = RectangleEdge.BOTTOM;
        }
    }
    // the above should cover all the options...
    if (result == null) {
        throw new IllegalStateException("resolveDomainAxisLocation()");
    }
    return result;
    
}
 

/**
 * 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 dataArea  the area in which the data should be drawn.
 * @param edge  the location of the axis.
 * 
 * @return A list of ticks.
 */
protected List refreshTicksHorizontal(Graphics2D g2,
                                      Rectangle2D dataArea,
                                      RectangleEdge edge) {

    List result = new java.util.ArrayList();

    Font tickLabelFont = getTickLabelFont();
    g2.setFont(tickLabelFont);
    
    if (isAutoTickUnitSelection()) {
        selectAutoTickUnit(g2, dataArea, edge);
    }

    double size = getTickUnit().getSize();
    int count = calculateVisibleTickCount();
    double lowestTickValue = calculateLowestVisibleTickValue();

    if (count <= ValueAxis.MAXIMUM_TICK_COUNT) {
        for (int i = 0; i < count; i++) {
            double currentTickValue = lowestTickValue + (i * size);
            String tickLabel;
            NumberFormat formatter = getNumberFormatOverride();
            if (formatter != null) {
                tickLabel = formatter.format(currentTickValue);
            }
            else {
                tickLabel = getTickUnit().valueToString(currentTickValue);
            }
            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
            );
            result.add(tick);
        }
    }
    return result;

}
 

/**
 * Resolves a range axis location for a given plot orientation.
 *
 * @param location  the location (<code>null</code> not permitted).
 * @param orientation  the orientation (<code>null</code> not permitted).
 *
 * @return the edge (never <code>null</code>).
 */
public static RectangleEdge resolveRangeAxisLocation(AxisLocation location,
                                                     PlotOrientation orientation) {

    if (location == null) {
        throw new IllegalArgumentException("Null 'location' argument.");   
    }
    if (orientation == null) {
        throw new IllegalArgumentException("Null 'orientation' argument.");   
    }

    RectangleEdge result = null;
    
    if (location == AxisLocation.TOP_OR_RIGHT) {
        if (orientation == PlotOrientation.HORIZONTAL) {
            result = RectangleEdge.TOP;
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            result = RectangleEdge.RIGHT;
        }
    }
    else if (location == AxisLocation.TOP_OR_LEFT) {
        if (orientation == PlotOrientation.HORIZONTAL) {
            result = RectangleEdge.TOP;
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            result = RectangleEdge.LEFT;
        }
    }
    else if (location == AxisLocation.BOTTOM_OR_RIGHT) {
        if (orientation == PlotOrientation.HORIZONTAL) {
            result = RectangleEdge.BOTTOM;
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            result = RectangleEdge.RIGHT;
        }
    }
    else if (location == AxisLocation.BOTTOM_OR_LEFT) {
        if (orientation == PlotOrientation.HORIZONTAL) {
            result = RectangleEdge.BOTTOM;
        }
        else if (orientation == PlotOrientation.VERTICAL) {
            result = RectangleEdge.LEFT;
        }
    }

    // the above should cover all the options...
    if (result == null) {
        throw new IllegalStateException("XYPlot.resolveRangeAxisLocation(...)");
    }
    return result;
    
}
 

/**
 * Draws the axis on a Java 2D graphics device (such as the screen or a printer).
 *
 * @param g2  the graphics device (<code>null</code> not permitted).
 * @param cursor  the cursor location.
 * @param plotArea  the area within which the axis should be drawn (<code>null</code> not
                    permitted).
 * @param dataArea  the area within which the plot is being drawn (<code>null</code> not 
 *                  permitted).
 * @param edge  the location of the axis (<code>null</code> not permitted).
 * @param plotState  collects information about the plot (<code>null</code> permitted).
 * 
 * @return the axis state (never <code>null</code>).
 */
public AxisState draw(Graphics2D g2, 
                      double cursor,
                      Rectangle2D plotArea, 
                      Rectangle2D dataArea, 
                      RectangleEdge edge,
                      PlotRenderingInfo plotState) {

    // if the axis is not visible, don't draw it...
    if (!isVisible()) {
        return new AxisState(cursor);
    }

    // calculate the adjusted data area taking into account the 3D effect...
    // this assumes that there is a 3D renderer, all this 3D effect is a bit of an
    // ugly hack...
    CategoryPlot plot = (CategoryPlot) getPlot();

    Rectangle2D adjustedDataArea = new Rectangle2D.Double();
    if (plot.getRenderer() instanceof Effect3D) {
        Effect3D e3D = (Effect3D) plot.getRenderer();
        double adjustedX = dataArea.getMinX();
        double adjustedY = dataArea.getMinY();
        double adjustedW = dataArea.getWidth() - e3D.getXOffset();
        double adjustedH = dataArea.getHeight() - e3D.getYOffset();

        if (edge == RectangleEdge.LEFT || edge == RectangleEdge.BOTTOM) {
            adjustedY += e3D.getYOffset();
        }
        else if (edge == RectangleEdge.RIGHT || edge == RectangleEdge.TOP) {
            adjustedX += e3D.getXOffset();
        }
        adjustedDataArea.setRect(adjustedX, adjustedY, adjustedW, adjustedH);
    }
    else {
        adjustedDataArea.setRect(dataArea);   
    }

    // draw the category labels and axis label
    AxisState state = new AxisState(cursor);
    state = drawCategoryLabels(g2, plotArea, adjustedDataArea, edge, state, plotState);
    state = drawLabel(getLabel(), g2, plotArea, dataArea, edge, state);

    return state;
    
}