JavaFX字体大小从宽度

Question

我想根据宽度值计算字体大小.

//Custom Font
Font.loadFont(Fonts.class.getResourceAsStream("/font/bignood/bignoodletoo.ttf"), 10)
String text = "Hello World";
Double width = 100;

对Java AWT的类似问题

类似的问题Java AWT 2

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编辑:用例

想想一个有文字的按钮"PLAY MONEY"¹.现在我将文本翻译为PT_BR并立即调用"DINHEIRO FICTICIO"².如你所见,单词²大于单词¹,所以如果你设置相同,Font Size那么你会看到DINHEIRO FIC...按钮内部.

因此,每当我改变时,这里的任务就是得到它的width值Button,得到text并应用Font Size以适应全文.Buttontext

Answer 1

下面是一个findFontSizeThatCanFit()可用于此的方法(和演示).

(在线观看)

public class FxFontMetrics {
    public static void main(String[] args) {
        int maxWidth = 100;
        System.out.println("# Text -> Font size that can fit text under " + maxWidth + " pixels");
        Stream.of(
                "DINHEIRO FICTICIO",
                "Dinheiro ficticio",
                "PLAY MONEY",
                "Play money",
                "Devise factice qui compte pour du beurre")
                .forEach(text -> {
                    double size = findFontSizeThatCanFit(Font.font("dialog", 45), text, maxWidth);
                    System.out.println(text + " -> " + size);
                });
    }

    private static double findFontSizeThatCanFit(Font font, String s, int maxWidth) {
        double fontSize = font.getSize();
        double width = textWidth(font, s);
        if (width > maxWidth) {
            return fontSize * maxWidth / width;
        }
        return fontSize;
    }

    private static double textWidth(Font font, String s) {
        Text text = new Text(s);
        text.setFont(font);
        return text.getBoundsInLocal().getWidth();
    }
}

它打印:

# Text -> Font size that can fit text under 100 pixels
DINHEIRO FICTICIO -> 10.475703324808185
Dinheiro ficticio -> 12.757739986295396
PLAY MONEY -> 15.587183195068118
Play money -> 17.152428810720266
Devise factice qui compte pour du beurre -> 4.795354500327807