我正在嘗試為 libgdx 創(chuàng)建一個組件，它可以以與 html 對<p align=”justify”> ... </p>.我的想法是添加一些自定義組件，可以通過調(diào)整組件的相對 x 和 y 坐標來實現(xiàn)這一點。import java.util.ArrayList;import java.util.List;import com.badlogic.gdx.scenes.scene2d.Actor;import com.badlogic.gdx.scenes.scene2d.ui.Label;import com.badlogic.gdx.scenes.scene2d.ui.Label.LabelStyle;import com.badlogic.gdx.scenes.scene2d.ui.WidgetGroup;import com.badlogic.gdx.utils.Align;public class Paragraph extends WidgetGroup { private Label space; public Paragraph(String text, float width, LabelStyle style) { super(); setWidth(width); this.space = new Label(" ", style); this.space.pack(); String[] words = text.split(" "); for (String word : words) { Label label = new Label(word, style); label.pack(); addActor(label); } } public void layout () { float size = 0; List<Actor> elements = new ArrayList<Actor>(); float x = getX(Align.topLeft); float y = getY(Align.topLeft); for (Actor actor : this.getChildren().items) { if (actor != null) { if (elements.isEmpty()) { elements.add(actor); size = actor.getWidth(); } else { if (size + space.getWidth() + actor.getWidth() <= this.getWidth()) { elements.add(actor); size += (space.getWidth() + actor.getWidth()); } }我的問題是我用 getX(Align.topLeft) & getY(Align.topLeft) 檢索的 x 和 y 坐標總是返回 (0,0) 而不是舞臺上的真實坐標。所以最終的結(jié)果是不同段落中包含的所有文本都被繪制在彼此之上。不在位置 (0,0) 上，而是在周圍表格內(nèi)的相同位置上。
1 回答
慕運維8079593
TA貢獻1876條經(jīng)驗 獲得超5個贊
我自己想出來了。
似乎為此覆蓋布局方法是個壞主意。我現(xiàn)在從構(gòu)造函數(shù)中調(diào)用一個不同的方法。
另外我弄亂了 x 和 y 坐標，所以我不得不重寫那個方法。
Ps.: 我也調(diào)整了這個問題，因為我想出了解決方案，它并不是關(guān)于小部件組的 x 和 y 坐標。
import java.util.ArrayList;
import java.util.List;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.ui.Label;
import com.badlogic.gdx.scenes.scene2d.ui.Label.LabelStyle;
import com.badlogic.gdx.scenes.scene2d.ui.WidgetGroup;
import com.badlogic.gdx.utils.Align;
public class Paragraph extends WidgetGroup {
private static final class RowData {
final List<Actor> elements;
final float size;
final boolean lastRow;
RowData(List<Actor> elements, float size, boolean lastRow) {
this.elements = elements;
this.size = size;
this.lastRow = lastRow;
}
static RowData createNewRow(List<Actor> elements, float size) {
return new RowData(elements, size, false);
}
static RowData createLastRow(List<Actor> elements, float size) {
return new RowData(elements, size, true);
}
}
private Label space;
public Paragraph(String text, float width, LabelStyle style) {
super();
setWidth(width);
this.space = new Label(" ", style);
this.space.pack();
String[] words = text.split(" ");
for (String word : words) {
Label label = new Label(word, style);
label.pack();
addActor(label);
}
arrangeActors();
}
private void arrangeActors() {
float size = 0;
float height = space.getHeight();
List<RowData> rows = new ArrayList<RowData>();
List<Actor> elements = new ArrayList<Actor>();
Actor[] actors = this.getChildren().begin();
for (Actor actor : actors) {
if (actor != null) {
if (elements.isEmpty()) {
elements.add(actor);
size = actor.getWidth();
} else if (size + space.getWidth() + actor.getWidth() <= this.getWidth()) {
elements.add(actor);
size += (space.getWidth() + actor.getWidth());
} else {
rows.add(RowData.createNewRow(elements, size));
elements = new ArrayList<Actor>();
height += space.getHeight();
elements.add(actor);
size = actor.getWidth();
}
}
}
this.getChildren().end();
rows.add(RowData.createLastRow(elements, size));
height += space.getHeight();
setHeight(height);
float y = height;
for (RowData data : rows) {
float spacing = space.getWidth();
if (data.lastRow == false) {
spacing += ((getWidth() - data.size) / data.elements.size());
}
Actor element = data.elements.get(0);
element.setPosition(0, y, Align.topLeft);
float x = element.getWidth();
for (int i = 1; i < data.elements.size(); i++) {
element = data.elements.get(i);
element.setPosition(x + spacing, y, Align.topLeft);
x += (spacing + element.getWidth());
}
y -= this.space.getHeight();
}
}
@Override
public float getPrefWidth () {
return getWidth();
}
@Override
public float getPrefHeight () {
return getHeight();
}
}
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