import java.awt.font.TextLayout; //导入方法依赖的package包/类

/**

* {@inheritDoc}

*/

@Override

public void paintComponent(Graphics g) {

updateSizes();

Graphics2D g2d = (Graphics2D) g;

chatDisplay.removeOldMessages();

Dimension size = getSize();

if (freeColClient.isMapEditor()) {

if (hasMap()) {

mapViewer.displayMap(g2d);

} else {

g2d.setColor(Color.BLACK);

g2d.fillRect(0, 0, size.width, size.height);

}

} else if (freeColClient.isInGame() && hasMap()) {

mapViewer.displayMap(g2d);

// Grey out the map if it is not my turn (and a multiplayer game).

if (!freeColClient.currentPlayerIsMyPlayer()) {

if (greyLayer == null) {

greyLayer = new GrayLayer(freeColClient);

}

if (greyLayer.getParent() == null) {

add(greyLayer, JLayeredPane.DRAG_LAYER);

}

greyLayer.setBounds(0, 0, size.width, size.height);

greyLayer.setPlayer(freeColClient.getGame().getCurrentPlayer());

} else {

if (greyLayer != null && greyLayer.getParent() != null) {

removeFromCanvas(greyLayer);

}

}

// paint chat display

chatDisplay.display(g2d, mapViewer.getImageLibrary(), size);

} else {

/* main menu */

// TODO: Check if its right to sometimes have an unfocused map

// ingame and end up here after clicking outside map.

final String bgImageKey = "image.flavor.Canvas.map";

if (ResourceManager.hasImageResource(bgImageKey)) {

// Get the background without scaling, to avoid wasting

// memory needlessly keeping an unbounded number of rescaled

// versions of the largest image in FreeCol, forever.

final Image bgImage = ResourceManager.getImage(bgImageKey);

// Draw background image with scaling.

g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,

RenderingHints.VALUE_INTERPOLATION_BILINEAR);

g2d.drawImage(bgImage, 0, 0, size.width, size.height, this);

String versionStr = "v. " + FreeCol.getVersion();

Font oldFont = g2d.getFont();

Color oldColor = g2d.getColor();

Font newFont = oldFont.deriveFont(Font.BOLD);

TextLayout layout = new TextLayout(versionStr, newFont,

g2d.getFontRenderContext());

Rectangle2D bounds = layout.getBounds();

float x = size.width - (float) bounds.getWidth() - 5;

float y = size.height - (float) bounds.getHeight();

g2d.setColor(Color.white);

layout.draw(g2d, x, y);

g2d.setFont(oldFont);

g2d.setColor(oldColor);

} else {

g2d.setColor(Color.BLACK);

g2d.fillRect(0, 0, size.width, size.height);

}

}

}