可能是一个重复的问题,但我找不到适合我需要的解决方案。
受到jewelsea ColorChooserSample的启发,在我的实施过程中,我意识到手动尺寸只能在Control
上设置,而不能在Pane
s上设置。这些窗格应该足够聪明,可以根据父级自动调整大小。
GridPane
的孩子有没有办法同时抓住垂直和水平空间?非常类似于VBox
和HBox
。我打赌解决方案涉及AnchorPane
。
保留我的孩子窗格和不是控件。
带按钮的SSCCE (复制 - 粘贴 - 运行 - 调整大小窗口)
import javafx.application.Application;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Bounds;
import javafx.geometry.Insets;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Control;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;
/**
*
* @author ggrec
*
*/
public class DashboardFXGrid extends Application
{
// ==================== 1. Static Fields ========================
private final static double GOLDEN_RATIO = 1.618;
private final static double MIN_TILE_SIZE = 5;
private final static double MAX_TILE_SIZE = Double.MAX_VALUE;
// ====================== 2. Instance Fields =============================
private DoubleProperty prefTileSize = new SimpleDoubleProperty(MIN_TILE_SIZE);
private double nColumns;
private double nRows;
private GridPane gridPane;
// ==================== 3. Static Methods ====================
public static void main(final String[] args)
{
Application.launch(args);
}
// ==================== 4. Constructors ====================
@Override
public void start(final Stage primaryStage) throws Exception
{
gridPane = new GridPane();
gridPane.setPadding(new Insets(20));
gridPane.setHgap(10);
gridPane.setVgap(10);
nColumns = Math.floor(Math.sqrt(dummyButtons().length) * 2 / GOLDEN_RATIO);
nRows = Math.ceil(dummyButtons().length / nColumns);
createContents();
addResizeListeners();
primaryStage.setScene(new Scene(gridPane));
primaryStage.show();
}
// ==================== 5. Creators ====================
private void createContents()
{
int i = 0;
for (final Button button : dummyButtons())
{
GridPane.setRowIndex(button, i / (int) nColumns);
GridPane.setColumnIndex(button, i % (int) nColumns);
button.setMinSize(MIN_TILE_SIZE, MIN_TILE_SIZE);
button.setMaxSize(MAX_TILE_SIZE, MAX_TILE_SIZE);
gridPane.getChildren().add(button);
i++;
}
}
private void addResizeListeners()
{
gridPane.layoutBoundsProperty().addListener(new ChangeListener<Bounds>() {
@Override public void changed(final ObservableValue<? extends Bounds> observableValue, final Bounds oldBounds, final Bounds newBounds)
{
prefTileSize.set(Math.max(MIN_TILE_SIZE, Math.min(newBounds.getWidth() / nColumns, newBounds.getHeight() / nRows)));
for (final Node child : gridPane.getChildrenUnmodifiable())
{
final Control tile = (Control) child;
tile.setPrefSize(prefTileSize.get(), prefTileSize.get());
}
}
});
}
// ==================== 15. Other ====================
private static final Button[] dummyButtons()
{
final Button[] buttons = new Button[5];
for(int i = 0; i < buttons.length; i++)
{
buttons[i] = new Button(String.valueOf(i));
}
return buttons;
}
}
答案 0 :(得分:7)
GridPanes孩子有没有办法同时抓住垂直和水平空间?
尝试使用GridPane的RowConstraints
和ColumnConstraints
:
for (final Button button : dummyButtons()) {
GridPane.setRowIndex(button, i / (int) nColumns);
GridPane.setColumnIndex(button, i % (int) nColumns);
button.setMinSize(MIN_TILE_SIZE, MIN_TILE_SIZE);
button.setMaxSize(MAX_TILE_SIZE, MAX_TILE_SIZE);
gridPane.getChildren().add(button);
i++;
}
for (int j = 0; j < nColumns; j++) {
ColumnConstraints cc = new ColumnConstraints();
cc.setHgrow(Priority.ALWAYS);
gridPane.getColumnConstraints().add(cc);
}
for (int j = 0; j < nRows; j++) {
RowConstraints rc = new RowConstraints();
rc.setVgrow(Priority.ALWAYS);
gridPane.getRowConstraints().add(rc);
}
并且没有致电addResizeListeners()
。