Java HorizontalAlignment.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;
}
 

/**
 * Draws a the title horizontally 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 drawHorizontal(Graphics2D g2, Rectangle2D area) {
    Rectangle2D titleArea = (Rectangle2D) area.clone();
    g2.setFont(this.font);
    g2.setPaint(this.paint);
    TextBlockAnchor anchor = null;
    float x = 0.0f;
    HorizontalAlignment horizontalAlignment = getHorizontalAlignment();
    if (horizontalAlignment == HorizontalAlignment.LEFT) {
        x = (float) titleArea.getX();
        anchor = TextBlockAnchor.TOP_LEFT;
    }
    else if (horizontalAlignment == HorizontalAlignment.RIGHT) {
        x = (float) titleArea.getMaxX();
        anchor = TextBlockAnchor.TOP_RIGHT;
    }
    else if (horizontalAlignment == HorizontalAlignment.CENTER) {
        x = (float) titleArea.getCenterX();
        anchor = TextBlockAnchor.TOP_CENTER;
    }
    float y = 0.0f;
    RectangleEdge position = getPosition();
    if (position == RectangleEdge.TOP) {
        y = (float) titleArea.getY();
    }
    else if (position == RectangleEdge.BOTTOM) {
        y = (float) titleArea.getMaxY();
        if (horizontalAlignment == HorizontalAlignment.LEFT) {
            anchor = TextBlockAnchor.BOTTOM_LEFT;
        }
        else if (horizontalAlignment == HorizontalAlignment.CENTER) {
            anchor = TextBlockAnchor.BOTTOM_CENTER;
        }
        else if (horizontalAlignment == HorizontalAlignment.RIGHT) {
            anchor = TextBlockAnchor.BOTTOM_RIGHT;
        }
    }
    this.content.draw(g2, x, y, anchor);
}
 

/**
 * Arranges the blocks without any constraints.  This puts all blocks
 * into a single column.
 * 
 * @param container  the container.
 * @param g2  the graphics device.
 * 
 * @return The size after the arrangement.
 */
protected Size2D arrangeNN(BlockContainer container, Graphics2D g2) {
    double y = 0.0;
    double height = 0.0;
    double maxWidth = 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);
            height = height + sizes[i].getHeight();
            maxWidth = Math.max(sizes[i].width, maxWidth);
            block.setBounds(
                new Rectangle2D.Double(
                    0.0, y, sizes[i].width, sizes[i].height
                )
            );
            y = y + sizes[i].height + this.verticalGap;
        }
        if (blockCount > 1) {
            height = height + this.verticalGap * (blockCount - 1);   
        }
        if (this.horizontalAlignment != HorizontalAlignment.LEFT) {
            for (int i = 0; i < blocks.size(); i++) {
                //Block b = (Block) blocks.get(i);
                if (this.horizontalAlignment 
                        == HorizontalAlignment.CENTER) {
                    //TODO: shift block right by half
                }
                else if (this.horizontalAlignment 
                        == HorizontalAlignment.RIGHT) {
                    //TODO: shift block over to right
                }
            }            
        }
    }
    return new Size2D(maxWidth, height);
}
 

/**
 * 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 horizontally 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 drawHorizontal(Graphics2D g2, Rectangle2D area) {
    Rectangle2D titleArea = (Rectangle2D) area.clone();
    g2.setFont(this.font);
    g2.setPaint(this.paint);
    TextBlockAnchor anchor = null;
    float x = 0.0f;
    HorizontalAlignment horizontalAlignment = getHorizontalAlignment();
    if (horizontalAlignment == HorizontalAlignment.LEFT) {
        x = (float) titleArea.getX();
        anchor = TextBlockAnchor.TOP_LEFT;
    }
    else if (horizontalAlignment == HorizontalAlignment.RIGHT) {
        x = (float) titleArea.getMaxX();
        anchor = TextBlockAnchor.TOP_RIGHT;
    }
    else if (horizontalAlignment == HorizontalAlignment.CENTER) {
        x = (float) titleArea.getCenterX();
        anchor = TextBlockAnchor.TOP_CENTER;
    }
    float y = 0.0f;
    RectangleEdge position = getPosition();
    if (position == RectangleEdge.TOP) {
        y = (float) titleArea.getY();
    }
    else if (position == RectangleEdge.BOTTOM) {
        y = (float) titleArea.getMaxY();
        if (horizontalAlignment == HorizontalAlignment.LEFT) {
            anchor = TextBlockAnchor.BOTTOM_LEFT;
        }
        else if (horizontalAlignment == HorizontalAlignment.CENTER) {
            anchor = TextBlockAnchor.BOTTOM_CENTER;
        }
        else if (horizontalAlignment == HorizontalAlignment.RIGHT) {
            anchor = TextBlockAnchor.BOTTOM_RIGHT;
        }
    }
    this.content.draw(g2, x, y, anchor);
}
 

/**
 * Arranges the blocks without any constraints.  This puts all blocks
 * into a single column.
 *
 * @param container  the container.
 * @param g2  the graphics device.
 *
 * @return The size after the arrangement.
 */
protected Size2D arrangeNN(BlockContainer container, Graphics2D g2) {
    double y = 0.0;
    double height = 0.0;
    double maxWidth = 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);
            height = height + sizes[i].getHeight();
            maxWidth = Math.max(sizes[i].width, maxWidth);
            block.setBounds(
                new Rectangle2D.Double(
                    0.0, y, sizes[i].width, sizes[i].height
                )
            );
            y = y + sizes[i].height + this.verticalGap;
        }
        if (blockCount > 1) {
            height = height + this.verticalGap * (blockCount - 1);
        }
        if (this.horizontalAlignment != HorizontalAlignment.LEFT) {
            for (int i = 0; i < blocks.size(); i++) {
                //Block b = (Block) blocks.get(i);
                if (this.horizontalAlignment
                        == HorizontalAlignment.CENTER) {
                    //TODO: shift block right by half
                }
                else if (this.horizontalAlignment
                        == HorizontalAlignment.RIGHT) {
                    //TODO: shift block over to right
                }
            }
        }
    }
    return new Size2D(maxWidth, height);
}
 

/**
 * 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);
}
 

/**
 * Draws the text block, aligning it with the specified anchor point and 
 * rotating it about the specified rotation point.
 * 
 * @param g2  the graphics device.
 * @param anchorX  the x-coordinate for the anchor point.
 * @param anchorY  the y-coordinate for the anchor point.
 * @param anchor  the point on the text block that is aligned to the 
 *                anchor point.
 * @param rotateX  the x-coordinate for the rotation point.
 * @param rotateY  the x-coordinate for the rotation point.
 * @param angle  the rotation (in radians).
 */
public void draw(final Graphics2D g2,
                 final float anchorX, final float anchorY, 
                 final TextBlockAnchor anchor,
                 final float rotateX, final float rotateY, 
                 final double angle) {

    final Size2D d = calculateDimensions(g2);
    final float[] offsets = calculateOffsets(anchor, d.getWidth(), 
            d.getHeight());
    final Iterator iterator = this.lines.iterator();
    float yCursor = 0.0f;
    while (iterator.hasNext()) {
        TextLine line = (TextLine) iterator.next();
        Size2D dimension = line.calculateDimensions(g2);
        float lineOffset = 0.0f;
        if (this.lineAlignment == HorizontalAlignment.CENTER) {
            lineOffset = (float) (d.getWidth() - dimension.getWidth()) 
                / 2.0f;   
        }
        else if (this.lineAlignment == HorizontalAlignment.RIGHT) {
            lineOffset = (float) (d.getWidth() - dimension.getWidth());   
        }
        line.draw(
            g2, anchorX + offsets[0] + lineOffset, anchorY + offsets[1] + yCursor,
            TextAnchor.TOP_LEFT, rotateX, rotateY, angle
        );
        yCursor = yCursor + (float) dimension.getHeight();
    }
    
}
 

@Override
public Object convertUponSet(Object value)
{
	if (value == null)
	{
		return null;
	}
	return 
		HorizontalAlignment.LEFT.toString().equals(value) 
		? HorizontalAlignment.LEFT 
		: HorizontalAlignment.CENTER.toString().equals(value)
		? HorizontalAlignment.CENTER
		: HorizontalAlignment.RIGHT.toString().equals(value)
		? HorizontalAlignment.RIGHT : 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 drawHorizontal(Graphics2D g2, Rectangle2D chartArea) {

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

    Spacer spacer = getSpacer();
    topSpace = spacer.getTopSpace(this.height);
    bottomSpace = spacer.getBottomSpace(this.height);
    leftSpace = spacer.getLeftSpace(this.width);
    rightSpace = spacer.getRightSpace(this.width);

    if (getPosition() == RectangleEdge.TOP) {
        startY = chartArea.getY() + topSpace;
    }
    else {
        startY = chartArea.getY() + chartArea.getHeight() - bottomSpace - this.height;
    }

    // what is our alignment?
    HorizontalAlignment horizontalAlignment = getHorizontalAlignment();
    double startX = 0.0;
    if (horizontalAlignment == HorizontalAlignment.CENTER) {
        startX = chartArea.getX() + leftSpace + chartArea.getWidth() / 2 - this.width / 2;
    }
    else if (horizontalAlignment == HorizontalAlignment.LEFT) {
        startX = chartArea.getX() + leftSpace;
    }
    else if (horizontalAlignment == HorizontalAlignment.RIGHT) {
        startX = chartArea.getX() + chartArea.getWidth() - rightSpace - this.width;
    }

    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 horizontally 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 drawHorizontal(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.getWidth(), new G2TextMeasurer(g2)
    );
    TextBlockAnchor anchor = null;
    float x = 0.0f;
    HorizontalAlignment horizontalAlignment = getHorizontalAlignment();
    if (horizontalAlignment == HorizontalAlignment.LEFT) {
        x = (float) titleArea.getX();
        anchor = TextBlockAnchor.TOP_LEFT;
    }
    else if (horizontalAlignment == HorizontalAlignment.RIGHT) {
        x = (float) titleArea.getMaxX();
        anchor = TextBlockAnchor.TOP_RIGHT;
    }
    else if (horizontalAlignment == HorizontalAlignment.CENTER) {
        x = (float) titleArea.getCenterX();
        anchor = TextBlockAnchor.TOP_CENTER;
    }
    float y = 0.0f;
    RectangleEdge position = getPosition();
    if (position == RectangleEdge.TOP) {
        y = (float) titleArea.getY();
    }
    else if (position == RectangleEdge.BOTTOM) {
        y = (float) titleArea.getMaxY();
        if (horizontalAlignment == HorizontalAlignment.LEFT) {
            anchor = TextBlockAnchor.BOTTOM_LEFT;
        }
        else if (horizontalAlignment == HorizontalAlignment.CENTER) {
            anchor = TextBlockAnchor.BOTTOM_CENTER;
        }
        else if (horizontalAlignment == HorizontalAlignment.RIGHT) {
            anchor = TextBlockAnchor.BOTTOM_RIGHT;
        }
    }
    title.draw(g2, x, y, anchor);
}
 

/**
 * 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 drawHorizontal(Graphics2D g2, Rectangle2D chartArea) {

    double startY = 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();
    topSpace = padding.calculateTopOutset(h);
    bottomSpace = padding.calculateBottomOutset(h);
    leftSpace = padding.calculateLeftOutset(w);
    rightSpace = padding.calculateRightOutset(w);

    if (getPosition() == RectangleEdge.TOP) {
        startY = chartArea.getY() + topSpace;
    }
    else {
        startY = chartArea.getY() + chartArea.getHeight() - bottomSpace - h;
    }

    // what is our alignment?
    HorizontalAlignment horizontalAlignment = getHorizontalAlignment();
    double startX = 0.0;
    if (horizontalAlignment == HorizontalAlignment.CENTER) {
        startX = chartArea.getX() + leftSpace + chartArea.getWidth() / 2.0 
                 - w / 2.0;
    }
    else if (horizontalAlignment == HorizontalAlignment.LEFT) {
        startX = chartArea.getX() + leftSpace;
    }
    else if (horizontalAlignment == HorizontalAlignment.RIGHT) {
        startX = chartArea.getX() + chartArea.getWidth() - rightSpace - w;
    }
    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);
}