Java VerticalAlignment.CENTER属性代码示例

/**
 * Creates a rectangle that is aligned to the frame.
 * 
 * @param dimensions the dimensions for the rectangle.
 * @param frame the frame to align to.
 * @param hAlign the horizontal alignment.
 * @param vAlign the vertical alignment.
 * @return A rectangle.
 */
private Rectangle2D createAlignedRectangle2D(Size2D dimensions, Rectangle2D frame, HorizontalAlignment hAlign,
		VerticalAlignment vAlign) {
	double x = Double.NaN;
	double y = Double.NaN;
	if (hAlign == HorizontalAlignment.LEFT) {
		x = frame.getX();
	} else if (hAlign == HorizontalAlignment.CENTER) {
		x = frame.getCenterX() - (dimensions.width / 2.0);
	} else if (hAlign == HorizontalAlignment.RIGHT) {
		x = frame.getMaxX() - dimensions.width;
	}
	if (vAlign == VerticalAlignment.TOP) {
		y = frame.getY();
	} else if (vAlign == VerticalAlignment.CENTER) {
		y = frame.getCenterY() - (dimensions.height / 2.0);
	} else if (vAlign == VerticalAlignment.BOTTOM) {
		y = frame.getMaxY() - dimensions.height;
	}

	return new Rectangle2D.Double(x, y, dimensions.width, dimensions.height);
}
 

/**
 * Creates {@link LegendTitle}s for all dimensions from the PlotConfiguration of this Plotter2D.
 * Expects that all {@link ValueSource} s in the provided PlotConfiguration use the same
 * {@link DimensionConfig} s.
 */
private List<LegendTitle> createLegendTitles() {
	List<LegendTitle> legendTitles = new LinkedList<LegendTitle>();
	LegendConfiguration legendConfiguration = plotInstance.getCurrentPlotConfigurationClone().getLegendConfiguration();

	LegendTitle legendTitle = new SmartLegendTitle(this, new FlowArrangement(HorizontalAlignment.CENTER, VerticalAlignment.CENTER, 30, 2), new ColumnArrangement(
			HorizontalAlignment.LEFT, VerticalAlignment.CENTER, 0, 2));
	legendTitle.setItemPaint(legendConfiguration.getLegendFontColor());
	
	RectangleEdge position = legendConfiguration.getLegendPosition().getPosition();
	if (position == null) {
		return legendTitles;
	}
	legendTitle.setPosition(position);

	if (legendConfiguration.isShowLegendFrame()) {
		legendTitle.setFrame(new BlockBorder(legendConfiguration.getLegendFrameColor()));
	}
	ColoredBlockContainer wrapper = new ColoredBlockContainer(legendConfiguration.getLegendBackgroundColor());
	wrapper.add(legendTitle.getItemContainer());
	wrapper.setPadding(3, 3, 3, 3);
	legendTitle.setWrapper(wrapper);

	legendTitles.add(legendTitle);
	return legendTitles;
}
 

/**
 * Creates {@link LegendTitle}s for all dimensions from the PlotConfiguration of this Plotter2D.
 * Expects that all {@link ValueSource} s in the provided PlotConfiguration use the same
 * {@link DimensionConfig} s.
 */
private List<LegendTitle> createLegendTitles() {
	List<LegendTitle> legendTitles = new LinkedList<LegendTitle>();
	LegendConfiguration legendConfiguration = plotInstance.getCurrentPlotConfigurationClone().getLegendConfiguration();

	LegendTitle legendTitle = new SmartLegendTitle(this, new FlowArrangement(HorizontalAlignment.CENTER,
			VerticalAlignment.CENTER, 30, 2), new ColumnArrangement(HorizontalAlignment.LEFT, VerticalAlignment.CENTER,
			0, 2));
	legendTitle.setItemPaint(legendConfiguration.getLegendFontColor());

	RectangleEdge position = legendConfiguration.getLegendPosition().getPosition();
	if (position == null) {
		return legendTitles;
	}
	legendTitle.setPosition(position);

	if (legendConfiguration.isShowLegendFrame()) {
		legendTitle.setFrame(new BlockBorder(legendConfiguration.getLegendFrameColor()));
	}
	ColoredBlockContainer wrapper = new ColoredBlockContainer(legendConfiguration.getLegendBackgroundColor());
	wrapper.add(legendTitle.getItemContainer());
	wrapper.setPadding(3, 3, 3, 3);
	legendTitle.setWrapper(wrapper);

	legendTitles.add(legendTitle);
	return legendTitles;
}
 

/**
 * Draws a the title vertically within the specified area.  This method 
 * will be called from the {@link #draw(Graphics2D, Rectangle2D) draw} 
 * method.
 * 
 * @param g2  the graphics device.
 * @param area  the area for the title.
 */
protected void drawVertical(Graphics2D g2, Rectangle2D area) {
    Rectangle2D titleArea = (Rectangle2D) area.clone();
    g2.setFont(this.font);
    g2.setPaint(this.paint);
    TextBlockAnchor anchor = null;
    float y = 0.0f;
    VerticalAlignment verticalAlignment = getVerticalAlignment();
    if (verticalAlignment == VerticalAlignment.TOP) {
        y = (float) titleArea.getY();
        anchor = TextBlockAnchor.TOP_RIGHT;
    }
    else if (verticalAlignment == VerticalAlignment.BOTTOM) {
        y = (float) titleArea.getMaxY();
        anchor = TextBlockAnchor.TOP_LEFT;
    }
    else if (verticalAlignment == VerticalAlignment.CENTER) {
        y = (float) titleArea.getCenterY();
        anchor = TextBlockAnchor.TOP_CENTER;
    }
    float x = 0.0f;
    RectangleEdge position = getPosition();
    if (position == RectangleEdge.LEFT) {
        x = (float) titleArea.getX();
    }
    else if (position == RectangleEdge.RIGHT) {
        x = (float) titleArea.getMaxX();
        if (verticalAlignment == VerticalAlignment.TOP) {
            anchor = TextBlockAnchor.BOTTOM_RIGHT;
        }
        else if (verticalAlignment == VerticalAlignment.CENTER) {
            anchor = TextBlockAnchor.BOTTOM_CENTER;
        }
        else if (verticalAlignment == VerticalAlignment.BOTTOM) {
            anchor = TextBlockAnchor.BOTTOM_LEFT;
        }
    }
    this.content.draw(g2, x, y, anchor, x, y, -Math.PI / 2.0);
}
 

/**
 * Arranges the blocks without any constraints.  This puts all blocks
 * into a single row.
 * 
 * @param container  the container.
 * @param g2  the graphics device.
 * 
 * @return The size after the arrangement.
 */
protected Size2D arrangeNN(BlockContainer container, Graphics2D g2) {
    double x = 0.0;
    double width = 0.0;
    double maxHeight = 0.0;
    List blocks = container.getBlocks();
    int blockCount = blocks.size();
    if (blockCount > 0) {
        Size2D[] sizes = new Size2D[blocks.size()];
        for (int i = 0; i < blocks.size(); i++) {
            Block block = (Block) blocks.get(i);
            sizes[i] = block.arrange(g2, RectangleConstraint.NONE);
            width = width + sizes[i].getWidth();
            maxHeight = Math.max(sizes[i].height, maxHeight);
            block.setBounds(
                new Rectangle2D.Double(
                    x, 0.0, sizes[i].width, sizes[i].height
                )
            );
            x = x + sizes[i].width + this.horizontalGap;
        }
        if (blockCount > 1) {
            width = width + this.horizontalGap * (blockCount - 1);   
        }
        if (this.verticalAlignment != VerticalAlignment.TOP) {
            for (int i = 0; i < blocks.size(); i++) {
                //Block b = (Block) blocks.get(i);
                if (this.verticalAlignment == VerticalAlignment.CENTER) {
                    //TODO: shift block down by half
                }
                else if (this.verticalAlignment 
                        == VerticalAlignment.BOTTOM) {
                    //TODO: shift block down to bottom
                }
            }            
        }
    }
    return new Size2D(width, maxHeight);
}
 

/**
 * Creates a rectangle that is aligned to the frame.
 * 
 * @param dimensions
 * @param frame
 * @param hAlign
 * @param vAlign
 * 
 * @return A rectangle.
 */
private Rectangle2D createAlignedRectangle2D(Size2D dimensions, 
        Rectangle2D frame, HorizontalAlignment hAlign, 
        VerticalAlignment vAlign) {
    double x = Double.NaN;
    double y = Double.NaN;
    if (hAlign == HorizontalAlignment.LEFT) {
        x = frame.getX();   
    }
    else if (hAlign == HorizontalAlignment.CENTER) {
        x = frame.getCenterX() - (dimensions.width / 2.0);   
    }
    else if (hAlign == HorizontalAlignment.RIGHT) {
        x = frame.getMaxX() - dimensions.width;   
    }
    if (vAlign == VerticalAlignment.TOP) {
        y = frame.getY();   
    }
    else if (vAlign == VerticalAlignment.CENTER) {
        y = frame.getCenterY() - (dimensions.height / 2.0);   
    }
    else if (vAlign == VerticalAlignment.BOTTOM) {
        y = frame.getMaxY() - dimensions.height;   
    }
    
    return new Rectangle2D.Double(x, y, dimensions.width, 
            dimensions.height);
}
 

/**
 * Draws a the title vertically within the specified area.  This method
 * will be called from the {@link #draw(Graphics2D, Rectangle2D) draw}
 * method.
 *
 * @param g2  the graphics device.
 * @param area  the area for the title.
 */
protected void drawVertical(Graphics2D g2, Rectangle2D area) {
    Rectangle2D titleArea = (Rectangle2D) area.clone();
    g2.setFont(this.font);
    g2.setPaint(this.paint);
    TextBlockAnchor anchor = null;
    float y = 0.0f;
    VerticalAlignment verticalAlignment = getVerticalAlignment();
    if (verticalAlignment == VerticalAlignment.TOP) {
        y = (float) titleArea.getY();
        anchor = TextBlockAnchor.TOP_RIGHT;
    }
    else if (verticalAlignment == VerticalAlignment.BOTTOM) {
        y = (float) titleArea.getMaxY();
        anchor = TextBlockAnchor.TOP_LEFT;
    }
    else if (verticalAlignment == VerticalAlignment.CENTER) {
        y = (float) titleArea.getCenterY();
        anchor = TextBlockAnchor.TOP_CENTER;
    }
    float x = 0.0f;
    RectangleEdge position = getPosition();
    if (position == RectangleEdge.LEFT) {
        x = (float) titleArea.getX();
    }
    else if (position == RectangleEdge.RIGHT) {
        x = (float) titleArea.getMaxX();
        if (verticalAlignment == VerticalAlignment.TOP) {
            anchor = TextBlockAnchor.BOTTOM_RIGHT;
        }
        else if (verticalAlignment == VerticalAlignment.CENTER) {
            anchor = TextBlockAnchor.BOTTOM_CENTER;
        }
        else if (verticalAlignment == VerticalAlignment.BOTTOM) {
            anchor = TextBlockAnchor.BOTTOM_LEFT;
        }
    }
    this.content.draw(g2, x, y, anchor, x, y, -Math.PI / 2.0);
}
 

/**
 * Arranges the blocks without any constraints.  This puts all blocks
 * into a single row.
 *
 * @param container  the container.
 * @param g2  the graphics device.
 *
 * @return The size after the arrangement.
 */
protected Size2D arrangeNN(BlockContainer container, Graphics2D g2) {
    double x = 0.0;
    double width = 0.0;
    double maxHeight = 0.0;
    List blocks = container.getBlocks();
    int blockCount = blocks.size();
    if (blockCount > 0) {
        Size2D[] sizes = new Size2D[blocks.size()];
        for (int i = 0; i < blocks.size(); i++) {
            Block block = (Block) blocks.get(i);
            sizes[i] = block.arrange(g2, RectangleConstraint.NONE);
            width = width + sizes[i].getWidth();
            maxHeight = Math.max(sizes[i].height, maxHeight);
            block.setBounds(
                new Rectangle2D.Double(
                    x, 0.0, sizes[i].width, sizes[i].height
                )
            );
            x = x + sizes[i].width + this.horizontalGap;
        }
        if (blockCount > 1) {
            width = width + this.horizontalGap * (blockCount - 1);
        }
        if (this.verticalAlignment != VerticalAlignment.TOP) {
            for (int i = 0; i < blocks.size(); i++) {
                //Block b = (Block) blocks.get(i);
                if (this.verticalAlignment == VerticalAlignment.CENTER) {
                    //TODO: shift block down by half
                }
                else if (this.verticalAlignment
                        == VerticalAlignment.BOTTOM) {
                    //TODO: shift block down to bottom
                }
            }
        }
    }
    return new Size2D(width, maxHeight);
}
 

/**
 * Creates a rectangle that is aligned to the frame.
 *
 * @param dimensions  the dimensions for the rectangle.
 * @param frame  the frame to align to.
 * @param hAlign  the horizontal alignment.
 * @param vAlign  the vertical alignment.
 *
 * @return A rectangle.
 */
private Rectangle2D createAlignedRectangle2D(Size2D dimensions,
        Rectangle2D frame, HorizontalAlignment hAlign,
        VerticalAlignment vAlign) {
    double x = Double.NaN;
    double y = Double.NaN;
    if (hAlign == HorizontalAlignment.LEFT) {
        x = frame.getX();
    }
    else if (hAlign == HorizontalAlignment.CENTER) {
        x = frame.getCenterX() - (dimensions.width / 2.0);
    }
    else if (hAlign == HorizontalAlignment.RIGHT) {
        x = frame.getMaxX() - dimensions.width;
    }
    if (vAlign == VerticalAlignment.TOP) {
        y = frame.getY();
    }
    else if (vAlign == VerticalAlignment.CENTER) {
        y = frame.getCenterY() - (dimensions.height / 2.0);
    }
    else if (vAlign == VerticalAlignment.BOTTOM) {
        y = frame.getMaxY() - dimensions.height;
    }

    return new Rectangle2D.Double(x, y, dimensions.width,
            dimensions.height);
}
 

@Override
public Object convertUponSet(Object value)
{
	if (value == null)
	{
		return null;
	}
	return 
		VerticalAlignment.TOP.toString().equals(value) 
		? VerticalAlignment.TOP 
		: VerticalAlignment.CENTER.toString().equals(value)
		? VerticalAlignment.CENTER
		: VerticalAlignment.BOTTOM.toString().equals(value)
		? VerticalAlignment.BOTTOM : null;
}
 

/**
 * Creates {@link LegendTitle}s for all dimensions from the PlotConfiguration of this Plotter2D.
 * Expects that all {@link ValueSource} s in the provided PlotConfiguration use the same
 * {@link DimensionConfig} s.
 */
private List<LegendTitle> createLegendTitles() {
	List<LegendTitle> legendTitles = new LinkedList<LegendTitle>();
	LegendConfiguration legendConfiguration = plotInstance.getCurrentPlotConfigurationClone().getLegendConfiguration();

	LegendTitle legendTitle = new SmartLegendTitle(this,
			new FlowArrangement(HorizontalAlignment.CENTER, VerticalAlignment.CENTER, 30, 2),
			new ColumnArrangement(HorizontalAlignment.LEFT, VerticalAlignment.CENTER, 0, 2));
	legendTitle.setItemPaint(legendConfiguration.getLegendFontColor());

	RectangleEdge position = legendConfiguration.getLegendPosition().getPosition();
	if (position == null) {
		return legendTitles;
	}
	legendTitle.setPosition(position);

	if (legendConfiguration.isShowLegendFrame()) {
		legendTitle.setFrame(new BlockBorder(legendConfiguration.getLegendFrameColor()));
	}
	ColoredBlockContainer wrapper = new ColoredBlockContainer(legendConfiguration.getLegendBackgroundColor());
	wrapper.add(legendTitle.getItemContainer());
	wrapper.setPadding(3, 3, 3, 3);
	legendTitle.setWrapper(wrapper);

	legendTitles.add(legendTitle);
	return legendTitles;
}
 

/**
 * Draws the title on a Java 2D graphics device (such as the screen or a printer).
 *
 * @param g2  the graphics device.
 * @param chartArea  the area within which the title (and plot) should be drawn.
 *
 * @return the area used by the title.
 */
protected Size2D drawVertical(Graphics2D g2, Rectangle2D chartArea) {

    double startX = 0.0;
    double topSpace = 0.0;
    double bottomSpace = 0.0;
    double leftSpace = 0.0;
    double rightSpace = 0.0;

    Spacer spacer = getSpacer();
    if (spacer != null) {
        topSpace = spacer.getTopSpace(this.height);
        bottomSpace = spacer.getBottomSpace(this.height);
        leftSpace = spacer.getLeftSpace(this.width);
        rightSpace = spacer.getRightSpace(this.width);
    }

    if (getPosition() == RectangleEdge.LEFT) {
        startX = chartArea.getX() + leftSpace;
    }
    else {
        startX = chartArea.getMaxX() - rightSpace - this.width;
    }

    // what is our alignment?
    VerticalAlignment alignment = getVerticalAlignment();
    double startY = 0.0;
    if (alignment == VerticalAlignment.CENTER) {
        startY = chartArea.getMinY() + topSpace + chartArea.getHeight() / 2 - this.height / 2;
    }
    else if (alignment == VerticalAlignment.TOP) {
        startY = chartArea.getMinY() + topSpace;
    }
    else if (alignment == VerticalAlignment.BOTTOM) {
        startY = chartArea.getMaxY() - bottomSpace - this.height;
    }

    g2.drawImage(this.image, (int) startX, (int) startY, this.width, this.height, null);

    return new Size2D(chartArea.getWidth() + leftSpace + rightSpace,
        this.height + topSpace + bottomSpace);

}
 

/**
 * Draws a the title vertically within the specified area.  This method will be called
 * from the {@link #draw(Graphics2D, Rectangle2D) draw} method.
 * 
 * @param g2  the graphics device.
 * @param area  the area for the title.
 */
protected void drawVertical(Graphics2D g2, Rectangle2D area) {
    Rectangle2D titleArea = (Rectangle2D) area.clone();
    getSpacer().trim(titleArea);
    g2.setFont(this.font);
    g2.setPaint(this.paint);
    TextBlock title = TextUtilities.createTextBlock(
        this.text, this.font, this.paint, (float) titleArea.getHeight(), new G2TextMeasurer(g2)
    );
    TextBlockAnchor anchor = null;
    float y = 0.0f;
    VerticalAlignment verticalAlignment = getVerticalAlignment();
    if (verticalAlignment == VerticalAlignment.TOP) {
        y = (float) titleArea.getY();
        anchor = TextBlockAnchor.TOP_RIGHT;
    }
    else if (verticalAlignment == VerticalAlignment.BOTTOM) {
        y = (float) titleArea.getMaxY();
        anchor = TextBlockAnchor.TOP_LEFT;
    }
    else if (verticalAlignment == VerticalAlignment.CENTER) {
        y = (float) titleArea.getCenterY();
        anchor = TextBlockAnchor.TOP_CENTER;
    }
    float x = 0.0f;
    RectangleEdge position = getPosition();
    if (position == RectangleEdge.LEFT) {
        x = (float) titleArea.getX();
    }
    else if (position == RectangleEdge.RIGHT) {
        x = (float) titleArea.getMaxX();
        if (verticalAlignment == VerticalAlignment.TOP) {
            anchor = TextBlockAnchor.BOTTOM_RIGHT;
        }
        else if (verticalAlignment == VerticalAlignment.CENTER) {
            anchor = TextBlockAnchor.BOTTOM_CENTER;
        }
        else if (verticalAlignment == VerticalAlignment.BOTTOM) {
            anchor = TextBlockAnchor.BOTTOM_LEFT;
        }
    }
    title.draw(g2, x, y, anchor, x, y, -Math.PI / 2.0);
}
 

/**
 * Draws the title on a Java 2D graphics device (such as the screen or a 
 * printer).
 *
 * @param g2  the graphics device.
 * @param chartArea  the area within which the title (and plot) should be 
 *                   drawn.
 *
 * @return The size of the area used by the title.
 */
protected Size2D drawVertical(Graphics2D g2, Rectangle2D chartArea) {

    double startX = 0.0;
    double topSpace = 0.0;
    double bottomSpace = 0.0;
    double leftSpace = 0.0;
    double rightSpace = 0.0;

    double w = getWidth();
    double h = getHeight();
    
    RectangleInsets padding = getPadding();
    if (padding != null) {
        topSpace = padding.calculateTopOutset(h);
        bottomSpace = padding.calculateBottomOutset(h);
        leftSpace = padding.calculateLeftOutset(w);
        rightSpace = padding.calculateRightOutset(w);
    }

    if (getPosition() == RectangleEdge.LEFT) {
        startX = chartArea.getX() + leftSpace;
    }
    else {
        startX = chartArea.getMaxX() - rightSpace - w;
    }

    // what is our alignment?
    VerticalAlignment alignment = getVerticalAlignment();
    double startY = 0.0;
    if (alignment == VerticalAlignment.CENTER) {
        startY = chartArea.getMinY() + topSpace 
                 + chartArea.getHeight() / 2.0 - h / 2.0;
    }
    else if (alignment == VerticalAlignment.TOP) {
        startY = chartArea.getMinY() + topSpace;
    }
    else if (alignment == VerticalAlignment.BOTTOM) {
        startY = chartArea.getMaxY() - bottomSpace - h;
    }

    g2.drawImage(this.image, (int) startX, (int) startY, (int) w, (int) h, 
            null);

    return new Size2D(chartArea.getWidth() + leftSpace + rightSpace,
        h + topSpace + bottomSpace);

}
 

/**
 * Creates a new instance.
 */
public FlowArrangement() {   
    this(HorizontalAlignment.CENTER, VerticalAlignment.CENTER, 2.0, 2.0);
}