設置某些特定的跨度配置時,GridPane自動調整存在一個問題。JavaFX 8 - GridPane自動調整問題
以下配置工程,我想到:
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.Border;
import javafx.scene.layout.BorderStroke;
import javafx.scene.layout.BorderStrokeStyle;
import javafx.scene.layout.BorderWidths;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class GridPaneWidthIssue extends Application {
public static void main(String... arguments) {
launch(arguments);
}
@Override
public void start(Stage primaryStage) throws Exception {
GridPane gridPane = new GridPane();
BorderStroke borderStroke = new BorderStroke(Color.RED,
BorderStrokeStyle.SOLID, CornerRadii.EMPTY,
BorderWidths.DEFAULT);
Border border = new Border(borderStroke);
gridPane.setBorder(border);
gridPane.setGridLinesVisible(true);
gridPane.setHgap(2);
gridPane.setVgap(2);
gridPane.setPadding(new Insets(10));
Label column0 = new Label("Column 0");
Label column1 = new Label("Column 1");
Label column2 = new Label("Column 2");
Label column01 = new Label("Span column 0 and 1");
Label column012 = new Label("Span column 0, 1 and 2");
gridPane.add(column0, 0, 0);
gridPane.add(column1, 1, 0);
gridPane.add(column2, 2, 0);
gridPane.add(column01, 0, 1, 2, 1);
gridPane.add(column012, 0, 2, 3, 1);
Scene scene = new Scene(gridPane);
primaryStage.setScene(scene);
primaryStage.show();
}
}
我不能發佈圖片還沒有證明這一點,但我可以確認以下斷言:
** gridpane.width = column0.width + column1.width + column2.width
當我行0中刪除標籤,我得到了下面的代碼:
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.Border;
import javafx.scene.layout.BorderStroke;
import javafx.scene.layout.BorderStrokeStyle;
import javafx.scene.layout.BorderWidths;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class GridPaneWidthIssue extends Application {
public static void main(String... arguments) {
launch(arguments);
}
@Override
public void start(Stage primaryStage) throws Exception {
GridPane gridPane = new GridPane();
BorderStroke borderStroke = new BorderStroke(Color.RED,
BorderStrokeStyle.SOLID, CornerRadii.EMPTY,
BorderWidths.DEFAULT);
Border border = new Border(borderStroke);
gridPane.setBorder(border);
gridPane.setGridLinesVisible(true);
gridPane.setHgap(2);
gridPane.setVgap(2);
gridPane.setPadding(new Insets(10));
Label column0 = new Label("Column 0");
Label column1 = new Label("Column 1");
Label column2 = new Label("Column 2");
Label column01 = new Label("Span column 0 and 1");
Label column012 = new Label("Span column 0, 1 and 2");
// gridPane.add(column0, 0, 0);
// gridPane.add(column1, 1, 0);
// gridPane.add(column2, 2, 0);
gridPane.add(column01, 0, 1, 2, 1);
gridPane.add(column012, 0, 2, 3, 1);
Scene scene = new Scene(gridPane);
primaryStage.setScene(scene);
primaryStage.show();
}
}
而結果是不正確的:
gridpane.width> column0.width + column1.width + column2.width
我沒有驗證,但我猜是:
gridpane.width = column0.width + column1.width + column0.width + column1.width + column2.width
JavaFX問題或我誤解了Gridpane調整策略?
案例1:OK
案例2:KO(在GridPane空白空間)
你能澄清你的意思嗎?我會將你的僞代碼'column0.width'解釋爲'Label column0;'等的寬度。顯然這在你的第二個例子中是沒有意義的,因爲'column0.width'將是零(類似於其他),因爲這些標籤不顯示。 (不管怎樣,第一個例子中都不是這樣。)那麼你是指實際列的寬度?如果是這樣,因爲在第一個例子中它必須包含'hgap' ......但在第二個例子中它變得平凡無奇。所以你是什麼意思? (我會upvote,所以你可以張貼圖像。) – 2015-02-05 18:58:41
你是對的,通過專欄0我不是指標籤,而是列本身,我沒有在我的僞代碼中包含hgaps。我添加了空白來製作截圖明確。我會盡快上傳這兩種情況的截圖,你會清楚地看到問題:在第二種情況下,column2右邊有一個空的空間。這個空間在gridpane裏面。在這個特定的例子中,當column0或column1增長時,這個空間會增長。這就是爲什麼我猜空白空間寬度=列0的寬度+列1的。這只是一個猜測,但無論如何,空蕩蕩的空間令人討厭。 – Jonathan 2015-02-06 07:26:39