Example usage for com.badlogic.gdx.scenes.scene2d.utils Layout getPrefWidth

Introduction

In this page you can find the example usage for com.badlogic.gdx.scenes.scene2d.utils Layout getPrefWidth.

Prototype

public float getPrefWidth();

Source Link

Usage

From source file:com.anstrat.gui.SnapScrollPane.java

License:Apache License

public void layout() {
    final Drawable bg = style.background;
    final Drawable hScrollKnob = style.hScrollKnob;
    final Drawable vScrollKnob = style.vScrollKnob;

    float bgLeftWidth = 0, bgRightWidth = 0, bgTopHeight = 0, bgBottomHeight = 0;
    if (bg != null) {
        bgLeftWidth = bg.getLeftWidth();
        bgRightWidth = bg.getRightWidth();
        bgTopHeight = bg.getTopHeight();
        bgBottomHeight = bg.getBottomHeight();
    }/*from   w w w  .j ava2 s .  co  m*/

    float width = getWidth();
    float height = getHeight();

    float scrollbarHeight = 0;
    if (hScrollKnob != null)
        scrollbarHeight = hScrollKnob.getMinHeight();
    if (style.hScroll != null)
        scrollbarHeight = Math.max(scrollbarHeight, style.hScroll.getMinHeight());
    float scrollbarWidth = 0;
    if (vScrollKnob != null)
        scrollbarWidth = vScrollKnob.getMinWidth();
    if (style.vScroll != null)
        scrollbarWidth = Math.max(scrollbarWidth, style.vScroll.getMinWidth());

    // Get available space size by subtracting background's padded area.
    areaWidth = width - bgLeftWidth - bgRightWidth;
    areaHeight = height - bgTopHeight - bgBottomHeight;

    if (widget == null)
        return;

    // Get widget's desired width.
    float widgetWidth, widgetHeight;
    if (widget instanceof Layout) {
        Layout layout = (Layout) widget;
        widgetWidth = layout.getPrefWidth();
        widgetHeight = layout.getPrefHeight();
    } else {
        widgetWidth = widget.getWidth();
        widgetHeight = widget.getHeight();
    }

    // Determine if horizontal/vertical scrollbars are needed.
    scrollX = forceOverscrollX || (widgetWidth > areaWidth && !disableX);
    scrollY = forceOverscrollY || (widgetHeight > areaHeight && !disableY);

    boolean fade = fadeScrollBars;
    if (!fade) {
        // Check again, now taking into account the area that's taken up by any enabled scrollbars.
        if (scrollY) {
            areaWidth -= scrollbarWidth;
            if (!scrollX && widgetWidth > areaWidth && !disableX) {
                scrollX = true;
            }
        }
        if (scrollX) {
            areaHeight -= scrollbarHeight;
            if (!scrollY && widgetHeight > areaHeight && !disableY) {
                scrollY = true;
                areaWidth -= scrollbarWidth;
            }
        }
    }

    // Set the widget area bounds.
    widgetAreaBounds.set(bgLeftWidth, bgBottomHeight, areaWidth, areaHeight);

    if (fade) {
        // Make sure widget is drawn under fading scrollbars.
        if (scrollX)
            areaHeight -= scrollbarHeight;
        if (scrollY)
            areaWidth -= scrollbarWidth;
    } else {
        if (scrollbarsOnTop) {
            // Make sure widget is drawn under non-fading scrollbars.
            if (scrollX)
                widgetAreaBounds.height += scrollbarHeight;
            if (scrollY)
                widgetAreaBounds.width += scrollbarWidth;
        } else {
            // Offset widget area y for horizontal scrollbar.
            if (scrollX)
                widgetAreaBounds.y += scrollbarHeight;
        }
    }

    // If the widget is smaller than the available space, make it take up the available space.
    widgetWidth = disableX ? width : Math.max(areaWidth, widgetWidth);
    widgetHeight = disableY ? height : Math.max(areaHeight, widgetHeight);

    maxX = widgetWidth - areaWidth;
    maxY = widgetHeight - areaHeight;
    if (fade) {
        // Make sure widget is drawn under fading scrollbars.
        if (scrollX)
            maxY -= scrollbarHeight;
        if (scrollY)
            maxX -= scrollbarWidth;
    }
    amountX = MathUtils.clamp(amountX, 0, maxX);
    amountY = MathUtils.clamp(amountY, 0, maxY);

    // Set the bounds and scroll knob sizes if scrollbars are needed.
    if (scrollX) {
        if (hScrollKnob != null) {
            float hScrollHeight = style.hScroll != null ? style.hScroll.getMinHeight()
                    : hScrollKnob.getMinHeight();
            hScrollBounds.set(bgLeftWidth, bgBottomHeight, areaWidth, hScrollHeight);
            hKnobBounds.width = Math.max(hScrollKnob.getMinWidth(),
                    (int) (hScrollBounds.width * areaWidth / widget.getWidth()));
            hKnobBounds.height = hScrollKnob.getMinHeight();
            hKnobBounds.x = hScrollBounds.x
                    + (int) ((hScrollBounds.width - hKnobBounds.width) * getScrollPercentX());
            hKnobBounds.y = hScrollBounds.y;
        } else {
            hScrollBounds.set(0, 0, 0, 0);
            hKnobBounds.set(0, 0, 0, 0);
        }
    }
    if (scrollY) {
        if (vScrollKnob != null) {
            float vScrollWidth = style.vScroll != null ? style.vScroll.getMinWidth()
                    : vScrollKnob.getMinWidth();
            vScrollBounds.set(width - bgRightWidth - vScrollWidth, height - bgTopHeight - areaHeight,
                    vScrollWidth, areaHeight);
            vKnobBounds.width = vScrollKnob.getMinWidth();
            vKnobBounds.height = Math.max(vScrollKnob.getMinHeight(),
                    (int) (vScrollBounds.height * areaHeight / widgetHeight));
            vKnobBounds.x = width - bgRightWidth - vScrollKnob.getMinWidth();
            vKnobBounds.y = vScrollBounds.y
                    + (int) ((vScrollBounds.height - vKnobBounds.height) * (1 - getScrollPercentY()));
        } else {
            vScrollBounds.set(0, 0, 0, 0);
            vKnobBounds.set(0, 0, 0, 0);
        }
    }

    if (widget.getWidth() != widgetWidth || widget.getHeight() != widgetHeight) {
        widget.setWidth(widgetWidth);
        widget.setHeight(widgetHeight);
        if (widget instanceof Layout) {
            Layout layout = (Layout) widget;
            layout.invalidate();
            layout.validate();
        }
    } else {
        if (widget instanceof Layout)
            ((Layout) widget).validate();
    }
}

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From source file:com.crashinvaders.common.scene2d.HorizontalGroupExtended.java

License:Apache License

private void computeSize() {
    sizeInvalid = false;/*w  w  w.j a  va2 s .  c  o m*/
    Array<Actor> children = getVisibleChildren();
    int n = children.size;
    prefWidth = padLeft + padRight + spacing * (n - 1);
    prefHeight = 0;
    for (int i = 0; i < n; i++) {
        Actor child = children.get(i);
        if (child instanceof Layout) {
            Layout layout = (Layout) child;
            prefWidth += layout.getPrefWidth();
            prefHeight = Math.max(prefHeight, layout.getPrefHeight());
        } else {
            prefWidth += child.getWidth();
            prefHeight = Math.max(prefHeight, child.getHeight());
        }
    }
    prefHeight += padTop + padBottom;
    if (round) {
        prefWidth = Math.round(prefWidth);
        prefHeight = Math.round(prefHeight);
    }
}

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From source file:com.crashinvaders.common.scene2d.HorizontalGroupExtended.java

License:Apache License

@Override
public void layout() {
    float spacing = this.spacing, padBottom = this.padBottom;
    int align = this.align;
    boolean reverse = this.reverse, round = this.round;

    float groupHeight = getHeight() - padTop - padBottom;
    float x = !reverse ? padLeft : getWidth() - padRight + spacing;
    Array<Actor> children = getVisibleChildren();
    for (int i = 0, n = children.size; i < n; i++) {
        Actor child = children.get(i);//from   www  .j av a  2s. co  m
        float width, height;
        if (child instanceof Layout) {
            Layout layout = (Layout) child;
            if (fill > 0)
                height = groupHeight * fill;
            else
                height = Math.min(layout.getPrefHeight(), groupHeight);
            height = Math.max(height, layout.getMinHeight());
            float maxHeight = layout.getMaxHeight();
            if (maxHeight > 0 && height > maxHeight)
                height = maxHeight;
            width = layout.getPrefWidth();
        } else {
            width = child.getWidth();
            height = child.getHeight();
            if (fill > 0)
                height *= fill;
        }

        float y = padBottom;
        if ((align & Align.top) != 0)
            y += groupHeight - height;
        else if ((align & Align.bottom) == 0) // center
            y += (groupHeight - height) / 2;

        if (reverse)
            x -= (width + spacing);
        if (round)
            child.setBounds(Math.round(x), Math.round(y), Math.round(width), Math.round(height));
        else
            child.setBounds(x, y, width, height);
        if (!reverse)
            x += (width + spacing);
    }
}

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From source file:com.kotcrab.vis.editor.ui.HorizontalFlowGroup.java

License:Apache License

private void computeSize() {
    prefWidth = 0;//from   www  .ja v a 2 s .c  om
    prefHeight = 0;
    sizeInvalid = false;
    SnapshotArray<Actor> children = getChildren();
    float groupWidth = getWidth();
    float x = 0;
    float maxHeight = 0;
    for (int i = 0, n = children.size; i < n; i++) {
        Actor child = children.get(i);
        float width = child.getWidth();
        float height = child.getHeight();
        if (child instanceof Layout) {
            Layout layout = (Layout) child;
            width = layout.getPrefWidth();
            height = layout.getPrefHeight();
        }
        if (x + width <= groupWidth) {
            prefWidth += width + spacing;
            x += width + spacing;
            maxHeight = Math.max(height, maxHeight);
        } else {
            prefHeight += maxHeight + spacing;
            maxHeight = height;
            x = width + spacing;
        }
    }
    prefHeight += maxHeight;
}

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From source file:com.kotcrab.vis.editor.ui.HorizontalFlowGroup.java

License:Apache License

public void layout() {
    if (sizeInvalid) {
        computeSize();/*  ww w.  ja  va 2 s  . com*/
        if (lastPrefHeight != prefHeight) {
            lastPrefHeight = prefHeight;
            invalidateHierarchy();
        }
    }
    SnapshotArray<Actor> children = getChildren();
    float groupWidth = getWidth();
    float x = 0;
    float y = getHeight();
    float maxHeight = 0;
    for (int i = 0, n = children.size; i < n; i++) {
        Actor child = children.get(i);
        float width = child.getWidth();
        float height = child.getHeight();
        if (child instanceof Layout) {
            Layout layout = (Layout) child;
            width = layout.getPrefWidth();
            height = layout.getPrefHeight();
        }
        if (x + width <= groupWidth) {
            maxHeight = Math.max(height, maxHeight);
        } else {
            y -= maxHeight + spacing;
            maxHeight = height;
            x = 0;
        }
        child.setBounds(x, y - height, width, height);
        x += width + spacing;
    }
}

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From source file:com.kotcrab.vis.ui.layout.ColumnGroup.java

License:Apache License

private void computeSize() {
    prefWidth = 0;//www.j ava  2  s  .c  om
    prefHeight = 0;
    sizeInvalid = false;
    SnapshotArray<Actor> children = getChildren();

    for (int i = 0, n = children.size; i < n; i++) {
        Actor child = children.get(i);
        float width = child.getWidth();
        float height = child.getHeight();
        if (child instanceof Layout) {
            Layout layout = (Layout) child;
            width = layout.getPrefWidth();
            height = layout.getPrefHeight();
        }

        prefWidth = Math.max(prefWidth, width);
        prefHeight += height;
    }
}

---

From source file:com.kotcrab.vis.ui.layout.ColumnGroup.java

License:Apache License

@Override
public void layout() {
    if (sizeInvalid) {
        computeSize();// w  ww  .  j av  a  2 s.  com
        if (lastPrefHeight != prefHeight) {
            lastPrefHeight = prefHeight;
            invalidateHierarchy();
        }
    }

    float y = getHeight();

    SnapshotArray<Actor> children = getChildren();
    for (int i = 0, n = children.size; i < n; i++) {
        Actor child = children.get(i);
        float width = child.getWidth();
        float height = child.getHeight();
        if (child instanceof Layout) {
            Layout layout = (Layout) child;
            width = layout.getPrefWidth();
            height = layout.getPrefHeight();
        }

        child.setBounds(0, y - height, width, height);
        y -= height;
    }
}

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From source file:com.kotcrab.vis.ui.layout.FloatingGroup.java

License:Apache License

@Override
public void layout() {
    if (useChildrenPreferredSize == false)
        return;/*  w  w w. ja v  a2  s .com*/
    SnapshotArray<Actor> children = getChildren();

    for (int i = 0; i < children.size; i++) {
        Actor child = children.get(i);
        float width = child.getWidth();
        float height = child.getHeight();
        if (child instanceof Layout) {
            Layout layout = (Layout) child;
            width = layout.getPrefWidth();
            height = layout.getPrefHeight();
        }

        child.setBounds(child.getX(), child.getY(), width, height);
    }
}

---

From source file:com.kotcrab.vis.ui.layout.HorizontalFlowGroup.java

License:Apache License

private void computeSize() {
    prefWidth = getWidth();/*w w  w .  java  2s.c om*/
    prefHeight = 0;
    sizeInvalid = false;

    SnapshotArray<Actor> children = getChildren();

    float x = 0;
    float rowHeight = 0;

    for (int i = 0; i < children.size; i++) {
        Actor child = children.get(i);
        float width = child.getWidth();
        float height = child.getHeight();
        if (child instanceof Layout) {
            Layout layout = (Layout) child;
            width = layout.getPrefWidth();
            height = layout.getPrefHeight();
        }

        if (x + width > getWidth()) {
            x = 0;
            prefHeight += rowHeight + spacing;
            rowHeight = height;
        } else {
            rowHeight = Math.max(height, rowHeight);
        }

        x += width + spacing;
    }

    //handle last row height
    prefHeight += rowHeight + spacing;
}

---

From source file:com.kotcrab.vis.ui.layout.HorizontalFlowGroup.java

License:Apache License

@Override
public void layout() {
    if (sizeInvalid) {
        computeSize();/*from www.j  a v a 2 s  . c o  m*/
        if (lastPrefHeight != prefHeight) {
            lastPrefHeight = prefHeight;
            invalidateHierarchy();
        }
    }

    SnapshotArray<Actor> children = getChildren();

    float x = 0;
    float y = getHeight();
    float rowHeight = 0;

    for (int i = 0; i < children.size; i++) {
        Actor child = children.get(i);
        float width = child.getWidth();
        float height = child.getHeight();
        if (child instanceof Layout) {
            Layout layout = (Layout) child;
            width = layout.getPrefWidth();
            height = layout.getPrefHeight();
        }

        if (x + width > getWidth()) {
            x = 0;
            y -= rowHeight + spacing;
            rowHeight = height;
        } else {
            rowHeight = Math.max(height, rowHeight);
        }

        child.setBounds(x, y - height, width, height);
        x += width + spacing;
    }
}

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