Java 类com.facebook.csslayout.CSSNode 实例源码

项目：LuaViewPlayground 文件：LVViewGroup.java

private void measureChildNode(int widthMeasureSpec, int heightMeasureSpec) {
    int childNodeViewsCount = mChildNodeViews.size();
    for (int i = 0; i < childNodeViewsCount; i++) {
        UDView nodeView = mChildNodeViews.get(i);
        View view = nodeView.getView();
        CSSNode node = nodeView.getCssNode();

        if (node.getSizeToFit()) {
            int margins = (int) (node.getMargin().get(Spacing.LEFT) + node.getMargin().get(Spacing.RIGHT));
            measureChild(view, widthMeasureSpec - margins, heightMeasureSpec);

            node.setNoDirtyStyleWidth(view.getMeasuredWidth());
            node.setNoDirtyStyleHeight(view.getMeasuredHeight());
        }

        if (view instanceof LVViewGroup) {
            LVViewGroup viewGroup = (LVViewGroup) view;
            if (viewGroup.getCssNode().getChildCount() > 0) {
                viewGroup.measureChildNode(widthMeasureSpec, heightMeasureSpec);
            }
        }
    }
}

项目：LuaViewPlayground 文件：FlexboxCSSParser.java

public static void parseFlexNodeCSS(CSSNode node, String cssString) {
    if (mCssString == cssString || mNode == node) {
        return;
    }

    mCssString = cssString;
    mNode = node;
    resetInlineMap();

    setPosition();
    setDirection();
    setAlignItems();
    setAlignSelf();
    setAlignContent();
    setJustfiyContent();
    setFlex();
    setFlexWrap();
    setSize();
    setMinSize();
    setMaxSize();
    setMargin();
    setPadding();
    setSizeToFit();
}

项目：ReactNativeSignatureExample 文件：ReactTextInputShadowNode.java

@Override
public void measure(CSSNode node, float width, float height, MeasureOutput measureOutput) {
  // measure() should never be called before setThemedContext()
  EditText editText = Assertions.assertNotNull(mEditText);

  measureOutput.width = width;
  editText.setTextSize(
      TypedValue.COMPLEX_UNIT_PX,
      mFontSize == UNSET ?
          (int) Math.ceil(PixelUtil.toPixelFromSP(ViewDefaults.FONT_SIZE_SP)) : mFontSize);
  mComputedPadding = spacingToFloatArray(getPadding());
  editText.setPadding(
      (int) Math.ceil(getPadding().get(Spacing.LEFT)),
      (int) Math.ceil(getPadding().get(Spacing.TOP)),
      (int) Math.ceil(getPadding().get(Spacing.RIGHT)),
      (int) Math.ceil(getPadding().get(Spacing.BOTTOM)));

  if (mNumberOfLines != UNSET) {
    editText.setLines(mNumberOfLines);
  }

  editText.measure(0 /* unspecified */, 0 /* unspecified */);
  measureOutput.height = editText.getMeasuredHeight();
}

项目：ReactNativeSignatureExample 文件：ReactSwitchManager.java

@Override
public void measure(CSSNode node, float width, float height, MeasureOutput measureOutput) {
  if (!mMeasured) {
    // Create a switch with the default config and measure it; since we don't (currently)
    // support setting custom switch text, this is fine, as all switches will measure the same
    // on a specific device/theme/locale combination.
    ReactSwitch reactSwitch = new ReactSwitch(getThemedContext());
    final int spec = View.MeasureSpec.makeMeasureSpec(
        ViewGroup.LayoutParams.WRAP_CONTENT,
        View.MeasureSpec.UNSPECIFIED);
    reactSwitch.measure(spec, spec);
    mWidth = reactSwitch.getMeasuredWidth();
    mHeight = reactSwitch.getMeasuredHeight();
    mMeasured = true;
  }
  measureOutput.width = mWidth;
  measureOutput.height = mHeight;
}

项目：ReactNativeSignatureExample 文件：ProgressBarShadowNode.java

@Override
public void measure(CSSNode node, float width, float height, MeasureOutput measureOutput) {
  final int style = ReactProgressBarViewManager.getStyleFromString(getStyle());
  if (!mMeasured.contains(style)) {
    ProgressBar progressBar = new ProgressBar(getThemedContext(), null, style);
    final int spec = View.MeasureSpec.makeMeasureSpec(
        ViewGroup.LayoutParams.WRAP_CONTENT,
        View.MeasureSpec.UNSPECIFIED);
    progressBar.measure(spec, spec);
    mHeight.put(style, progressBar.getMeasuredHeight());
    mWidth.put(style, progressBar.getMeasuredWidth());
    mMeasured.add(style);
  }

  measureOutput.height = mHeight.get(style);
  measureOutput.width = mWidth.get(style);
}

项目：react-native-spinner-android 文件：SpinnerManager.java

@Override
public void measure(CSSNode node, float width, MeasureOutput measureOutput) {
    if (!mMeasured) {
        Spinner reactSwitch = new Spinner(getThemedContext());
        final int spec = View.MeasureSpec.makeMeasureSpec(
            ViewGroup.LayoutParams.WRAP_CONTENT,
            View.MeasureSpec.UNSPECIFIED
        );

        reactSwitch.measure(spec, spec);
        mWidth = reactSwitch.getMeasuredWidth();
        mHeight = reactSwitch.getMeasuredHeight();
        mMeasured = true;
    }

    measureOutput.width = mWidth;
    measureOutput.height = mHeight;
}

项目：react-native-ibeacon-android 文件：ReactTextInputShadowNode.java

@Override
public void measure(CSSNode node, float width, float height, MeasureOutput measureOutput) {
  // measure() should never be called before setThemedContext()
  EditText editText = Assertions.assertNotNull(mEditText);

  measureOutput.width = width;
  editText.setTextSize(
      TypedValue.COMPLEX_UNIT_PX,
      mFontSize == UNSET ?
          (int) Math.ceil(PixelUtil.toPixelFromSP(ViewDefaults.FONT_SIZE_SP)) : mFontSize);
  mComputedPadding = spacingToFloatArray(getPadding());
  editText.setPadding(
      (int) Math.ceil(getPadding().get(Spacing.LEFT)),
      (int) Math.ceil(getPadding().get(Spacing.TOP)),
      (int) Math.ceil(getPadding().get(Spacing.RIGHT)),
      (int) Math.ceil(getPadding().get(Spacing.BOTTOM)));

  if (mNumberOfLines != UNSET) {
    editText.setLines(mNumberOfLines);
  }

  editText.measure(0 /* unspecified */, 0 /* unspecified */);
  measureOutput.height = editText.getMeasuredHeight();
}

项目：react-native-ibeacon-android 文件：ReactSwitchManager.java

@Override
public void measure(CSSNode node, float width, float height, MeasureOutput measureOutput) {
  if (!mMeasured) {
    // Create a switch with the default config and measure it; since we don't (currently)
    // support setting custom switch text, this is fine, as all switches will measure the same
    // on a specific device/theme/locale combination.
    ReactSwitch reactSwitch = new ReactSwitch(getThemedContext());
    final int spec = View.MeasureSpec.makeMeasureSpec(
        ViewGroup.LayoutParams.WRAP_CONTENT,
        View.MeasureSpec.UNSPECIFIED);
    reactSwitch.measure(spec, spec);
    mWidth = reactSwitch.getMeasuredWidth();
    mHeight = reactSwitch.getMeasuredHeight();
    mMeasured = true;
  }
  measureOutput.width = mWidth;
  measureOutput.height = mHeight;
}

项目：react-native-ibeacon-android 文件：ProgressBarShadowNode.java

@Override
public void measure(CSSNode node, float width, float height, MeasureOutput measureOutput) {
  final int style = ReactProgressBarViewManager.getStyleFromString(getStyle());
  if (!mMeasured.contains(style)) {
    ProgressBar progressBar = new ProgressBar(getThemedContext(), null, style);
    final int spec = View.MeasureSpec.makeMeasureSpec(
        ViewGroup.LayoutParams.WRAP_CONTENT,
        View.MeasureSpec.UNSPECIFIED);
    progressBar.measure(spec, spec);
    mHeight.put(style, progressBar.getMeasuredHeight());
    mWidth.put(style, progressBar.getMeasuredWidth());
    mMeasured.add(style);
  }

  measureOutput.height = mHeight.get(style);
  measureOutput.width = mWidth.get(style);
}

项目：react-native-text-input 文件：ReactTextInputShadowNode.java

@Override
public void measure(CSSNode node, float width, float height, MeasureOutput measureOutput) {
  // measure() should never be called before setThemedContext()
  EditText editText = Assertions.assertNotNull(mEditText);

  measureOutput.width = width;
  editText.setTextSize(
      TypedValue.COMPLEX_UNIT_PX,
      mFontSize == UNSET ?
          (int) Math.ceil(PixelUtil.toPixelFromSP(ViewDefaults.FONT_SIZE_SP)) : mFontSize);
  mComputedPadding = spacingToFloatArray(getPadding());
  editText.setPadding(
      (int) Math.ceil(getPadding().get(Spacing.LEFT)),
      (int) Math.ceil(getPadding().get(Spacing.TOP)),
      (int) Math.ceil(getPadding().get(Spacing.RIGHT)),
      (int) Math.ceil(getPadding().get(Spacing.BOTTOM)));

  if (mNumberOfLines != UNSET) {
    editText.setLines(mNumberOfLines);
  }

  editText.measure(MEASURE_SPEC, MEASURE_SPEC);
  measureOutput.height = editText.getMeasuredHeight();
}

项目：react-native-box-loaders 文件：ReactSwitchManager.java

@Override
public void measure(
    CSSNode node,
    float width,
    CSSMeasureMode widthMode,
    float height,
    CSSMeasureMode heightMode,
    MeasureOutput measureOutput) {
  if (!mMeasured) {
    // Create a switch with the default config and measure it; since we don't (currently)
    // support setting custom switch text, this is fine, as all switches will measure the same
    // on a specific device/theme/locale combination.
    ReactSwitch reactSwitch = new ReactSwitch(getThemedContext());
    final int spec = View.MeasureSpec.makeMeasureSpec(
        ViewGroup.LayoutParams.WRAP_CONTENT,
        View.MeasureSpec.UNSPECIFIED);
    reactSwitch.measure(spec, spec);
    mWidth = reactSwitch.getMeasuredWidth();
    mHeight = reactSwitch.getMeasuredHeight();
    mMeasured = true;
  }
  measureOutput.width = mWidth;
  measureOutput.height = mHeight;
}

项目：react-native-box-loaders 文件：ProgressBarShadowNode.java

@Override
public void measure(
    CSSNode node,
    float width,
    CSSMeasureMode widthMode,
    float height,
    CSSMeasureMode heightMode,
    MeasureOutput measureOutput) {
  final int style = ReactProgressBarViewManager.getStyleFromString(getStyle());
  if (!mMeasured.contains(style)) {
    ProgressBar progressBar = ReactProgressBarViewManager.createProgressBar(getThemedContext(), style);
    final int spec = View.MeasureSpec.makeMeasureSpec(
        ViewGroup.LayoutParams.WRAP_CONTENT,
        View.MeasureSpec.UNSPECIFIED);
    progressBar.measure(spec, spec);
    mHeight.put(style, progressBar.getMeasuredHeight());
    mWidth.put(style, progressBar.getMeasuredWidth());
    mMeasured.add(style);
  }

  measureOutput.height = mHeight.get(style);
  measureOutput.width = mWidth.get(style);
}

项目：react-native-box-loaders 文件：ReactSliderManager.java

@Override
public void measure(
    CSSNode node,
    float width,
    CSSMeasureMode widthMode,
    float height,
    CSSMeasureMode heightMode,
    MeasureOutput measureOutput) {
  if (!mMeasured) {
    SeekBar reactSlider = new ReactSlider(getThemedContext(), null, STYLE);
    final int spec = View.MeasureSpec.makeMeasureSpec(
        ViewGroup.LayoutParams.WRAP_CONTENT,
        View.MeasureSpec.UNSPECIFIED);
    reactSlider.measure(spec, spec);
    mWidth = reactSlider.getMeasuredWidth();
    mHeight = reactSlider.getMeasuredHeight();
    mMeasured = true;
  }
  measureOutput.width = mWidth;
  measureOutput.height = mHeight;
}

项目：react-native-box-loaders 文件：ModalHostShadowNode.java

/**
 * We need to set the styleWidth and styleHeight of the one child (represented by the <View/>
 * within the <RCTModalHostView/> in Modal.js.  This needs to fill the entire window.
 */
@Override
@TargetApi(16)
public void addChildAt(CSSNode child, int i) {
  super.addChildAt(child, i);

  Context context = getThemedContext();
  WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
  Display display = wm.getDefaultDisplay();
  // getCurrentSizeRange will return the min and max width and height that the window can be
  display.getCurrentSizeRange(mMinPoint, mMaxPoint);

  int width, height;
  int rotation = display.getRotation();
  if (rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_180) {
    // If we are vertical the width value comes from min width and height comes from max height
    width = mMinPoint.x;
    height = mMaxPoint.y;
  } else {
    // If we are horizontal the width value comes from max width and height comes from min height
    width = mMaxPoint.x;
    height = mMinPoint.y;
  }
  child.setStyleWidth(width);
  child.setStyleHeight(height);
}

项目：LuaViewPlayground 文件：LVViewGroup.java

private void assignNodeLayoutParams() {
    int childNodeViewsCount = mChildNodeViews.size();
    for (int i = 0; i < childNodeViewsCount; i++) {
        UDView nodeView = mChildNodeViews.get(i);

        View view = nodeView.getView();
        CSSNode node = nodeView.getCssNode();

        if (view != null && node != null) {
            int x = (int) node.getLayoutX();
            int y = (int) node.getLayoutY();
            int width = (int) node.getLayoutWidth();
            int height = (int) node.getLayoutHeight();

            RelativeLayout.LayoutParams lParams = (LayoutParams) view.getLayoutParams();
            if (lParams == null) {
                lParams = new RelativeLayout.LayoutParams(width, height);
            } else {
                lParams.width = width;
                lParams.height = height;
            }

            lParams.setMargins(x, y, 0, 0);
            view.setLayoutParams(lParams);

            if (view instanceof LVViewGroup) {
                LVViewGroup viewGroup = (LVViewGroup) view;
                if (viewGroup.getCssNode().getChildCount() > 0) {
                    viewGroup.assignNodeLayoutParams();
                }
            }
        }
    }
}

项目：LuaViewPlayground 文件：UDView.java

public UDView setFlexCss(String cssString) {
    if (mFlexCss == null || !mFlexCss.equals(cssString)) {
        CSSNode node = getCssNode();
        FlexboxCSSParser.parseFlexNodeCSS(node, cssString);
        mFlexCss = cssString;
    }

    return this;
}

项目：ReactNativeSignatureExample 文件：ReactShadowNode.java

@Override
public void addChildAt(CSSNode child, int i) {
  super.addChildAt(child, i);
  markUpdated();
  ReactShadowNode node = (ReactShadowNode) child;

  int increase = node.mIsLayoutOnly ? node.mTotalNativeChildren : 1;
  mTotalNativeChildren += increase;

  updateNativeChildrenCountInParent(increase);
}

项目：react-native-ibeacon-android 文件：ReactShadowNode.java

@Override
public void addChildAt(CSSNode child, int i) {
  super.addChildAt(child, i);
  markUpdated();
  ReactShadowNode node = (ReactShadowNode) child;

  int increase = node.mIsLayoutOnly ? node.mTotalNativeChildren : 1;
  mTotalNativeChildren += increase;

  updateNativeChildrenCountInParent(increase);
}

项目：react-native-box-loaders 文件：ReactTextInputShadowNode.java

@Override
public void measure(
    CSSNode node,
    float width,
    CSSMeasureMode widthMode,
    float height,
    CSSMeasureMode heightMode,
    MeasureOutput measureOutput) {
  // measure() should never be called before setThemedContext()
  EditText editText = Assertions.assertNotNull(mEditText);

  measureOutput.width = widthMode == CSSMeasureMode.UNDEFINED ? CSSConstants.UNDEFINED : width;
  editText.setTextSize(
      TypedValue.COMPLEX_UNIT_PX,
      mFontSize == UNSET ?
          (int) Math.ceil(PixelUtil.toPixelFromSP(ViewDefaults.FONT_SIZE_SP)) : mFontSize);
  mComputedPadding = spacingToFloatArray(getPadding());
  editText.setPadding(
      (int) Math.ceil(getPadding().get(Spacing.LEFT)),
      (int) Math.ceil(getPadding().get(Spacing.TOP)),
      (int) Math.ceil(getPadding().get(Spacing.RIGHT)),
      (int) Math.ceil(getPadding().get(Spacing.BOTTOM)));

  if (mNumberOfLines != UNSET) {
    editText.setLines(mNumberOfLines);
  }

  editText.measure(0 /* unspecified */, 0 /* unspecified */);
  measureOutput.height = editText.getMeasuredHeight();
}

项目：react-native-box-loaders 文件：ARTSurfaceViewManager.java

@Override
public void measure(
    CSSNode node,
    float width,
    CSSMeasureMode widthMode,
    float height,
    CSSMeasureMode heightMode,
    MeasureOutput measureOutput) {
  throw new IllegalStateException("SurfaceView should have explicit width and height set");
}

项目：react-native-box-loaders 文件：ReactShadowNode.java

@Override
public void addChildAt(CSSNode child, int i) {
  super.addChildAt(child, i);
  markUpdated();
  ReactShadowNode node = (ReactShadowNode) child;

  int increase = node.mIsLayoutOnly ? node.mTotalNativeChildren : 1;
  mTotalNativeChildren += increase;

  updateNativeChildrenCountInParent(increase);
}

项目：ReactNativeSignatureExample 文件：ARTSurfaceViewManager.java

@Override
public void measure(CSSNode node, float width, float height, MeasureOutput measureOutput) {
  throw new IllegalStateException("SurfaceView should have explicit width and height set");
}

项目：ReactNativeSignatureExample 文件：ReactTextShadowNode.java

private static void buildSpannedFromTextCSSNode(
    ReactTextShadowNode textCSSNode,
    SpannableStringBuilder sb,
    List<SetSpanOperation> ops) {
  int start = sb.length();
  if (textCSSNode.mText != null) {
    sb.append(textCSSNode.mText);
  }
  for (int i = 0, length = textCSSNode.getChildCount(); i < length; i++) {
    CSSNode child = textCSSNode.getChildAt(i);
    if (child instanceof ReactTextShadowNode) {
      buildSpannedFromTextCSSNode((ReactTextShadowNode) child, sb, ops);
    } else if (child instanceof ReactTextInlineImageShadowNode) {
      // We make the image take up 1 character in the span and put a corresponding character into
      // the text so that the image doesn't run over any following text.
      sb.append(INLINE_IMAGE_PLACEHOLDER);
      ops.add(
        new SetSpanOperation(
          sb.length() - INLINE_IMAGE_PLACEHOLDER.length(),
          sb.length(),
          ((ReactTextInlineImageShadowNode) child).buildInlineImageSpan()));
    } else {
      throw new IllegalViewOperationException("Unexpected view type nested under text node: "
              + child.getClass());
    }
    ((ReactShadowNode) child).markUpdateSeen();
  }
  int end = sb.length();
  if (end >= start) {
    if (textCSSNode.mIsColorSet) {
      ops.add(new SetSpanOperation(start, end, new ForegroundColorSpan(textCSSNode.mColor)));
    }
    if (textCSSNode.mIsBackgroundColorSet) {
      ops.add(new SetSpanOperation(
              start,
              end,
              new BackgroundColorSpan(textCSSNode.mBackgroundColor)));
    }
    if (textCSSNode.mFontSize != UNSET) {
      ops.add(new SetSpanOperation(start, end, new AbsoluteSizeSpan(textCSSNode.mFontSize)));
    }
    if (textCSSNode.mFontStyle != UNSET ||
        textCSSNode.mFontWeight != UNSET ||
        textCSSNode.mFontFamily != null) {
      ops.add(new SetSpanOperation(
              start,
              end,
              new CustomStyleSpan(
                  textCSSNode.mFontStyle,
                  textCSSNode.mFontWeight,
                  textCSSNode.mFontFamily,
                  textCSSNode.getThemedContext().getAssets())));
    }
    if (textCSSNode.mTextShadowOffsetDx != 0 || textCSSNode.mTextShadowOffsetDy != 0) {
      ops.add(new SetSpanOperation(
              start,
              end,
              new ShadowStyleSpan(
                  textCSSNode.mTextShadowOffsetDx,
                  textCSSNode.mTextShadowOffsetDy,
                  textCSSNode.mTextShadowRadius,
                  textCSSNode.mTextShadowColor)));
    }
    ops.add(new SetSpanOperation(start, end, new ReactTagSpan(textCSSNode.getReactTag())));
  }
}

项目：ReactNativeSignatureExample 文件：ReactTextShadowNode.java

@Override
public void measure(CSSNode node, float width, float height, MeasureOutput measureOutput) {
  // TODO(5578671): Handle text direction (see View#getTextDirectionHeuristic)
  ReactTextShadowNode reactCSSNode = (ReactTextShadowNode) node;
  TextPaint textPaint = sTextPaintInstance;
  Layout layout;
  Spanned text = Assertions.assertNotNull(
      reactCSSNode.mPreparedSpannableText,
      "Spannable element has not been prepared in onBeforeLayout");
  BoringLayout.Metrics boring = BoringLayout.isBoring(text, textPaint);
  float desiredWidth = boring == null ?
      Layout.getDesiredWidth(text, textPaint) : Float.NaN;

  if (boring == null &&
      (CSSConstants.isUndefined(width) ||
          (!CSSConstants.isUndefined(desiredWidth) && desiredWidth <= width))) {
    // Is used when the width is not known and the text is not boring, ie. if it contains
    // unicode characters.
    layout = new StaticLayout(
        text,
        textPaint,
        (int) Math.ceil(desiredWidth),
        Layout.Alignment.ALIGN_NORMAL,
        1,
        0,
        true);
  } else if (boring != null && (CSSConstants.isUndefined(width) || boring.width <= width)) {
    // Is used for single-line, boring text when the width is either unknown or bigger
    // than the width of the text.
    layout = BoringLayout.make(
        text,
        textPaint,
        boring.width,
        Layout.Alignment.ALIGN_NORMAL,
        1,
        0,
        boring,
        true);
  } else {
    // Is used for multiline, boring text and the width is known.
    layout = new StaticLayout(
        text,
        textPaint,
        (int) width,
        Layout.Alignment.ALIGN_NORMAL,
        1,
        0,
        true);
  }

  measureOutput.height = layout.getHeight();
  measureOutput.width = layout.getWidth();
  if (reactCSSNode.mNumberOfLines != UNSET &&
      reactCSSNode.mNumberOfLines < layout.getLineCount()) {
    measureOutput.height = layout.getLineBottom(reactCSSNode.mNumberOfLines - 1);
  }
  if (reactCSSNode.mLineHeight != UNSET) {
    int lines = reactCSSNode.mNumberOfLines != UNSET
        ? Math.min(reactCSSNode.mNumberOfLines, layout.getLineCount())
        : layout.getLineCount();
    float lineHeight = PixelUtil.toPixelFromSP(reactCSSNode.mLineHeight);
    measureOutput.height = lineHeight * lines;
  }
}

项目：react-native-ibeacon-android 文件：ARTSurfaceViewManager.java

@Override
public void measure(CSSNode node, float width, float height, MeasureOutput measureOutput) {
  throw new IllegalStateException("SurfaceView should have explicit width and height set");
}

项目：react-native-ibeacon-android 文件：ReactTextShadowNode.java

private static void buildSpannedFromTextCSSNode(
    ReactTextShadowNode textCSSNode,
    SpannableStringBuilder sb,
    List<SetSpanOperation> ops) {
  int start = sb.length();
  if (textCSSNode.mText != null) {
    sb.append(textCSSNode.mText);
  }
  for (int i = 0, length = textCSSNode.getChildCount(); i < length; i++) {
    CSSNode child = textCSSNode.getChildAt(i);
    if (child instanceof ReactTextShadowNode) {
      buildSpannedFromTextCSSNode((ReactTextShadowNode) child, sb, ops);
    } else if (child instanceof ReactTextInlineImageShadowNode) {
      // We make the image take up 1 character in the span and put a corresponding character into
      // the text so that the image doesn't run over any following text.
      sb.append(INLINE_IMAGE_PLACEHOLDER);
      ops.add(
        new SetSpanOperation(
          sb.length() - INLINE_IMAGE_PLACEHOLDER.length(),
          sb.length(),
          ((ReactTextInlineImageShadowNode) child).buildInlineImageSpan()));
    } else {
      throw new IllegalViewOperationException("Unexpected view type nested under text node: "
              + child.getClass());
    }
    ((ReactShadowNode) child).markUpdateSeen();
  }
  int end = sb.length();
  if (end >= start) {
    if (textCSSNode.mIsColorSet) {
      ops.add(new SetSpanOperation(start, end, new ForegroundColorSpan(textCSSNode.mColor)));
    }
    if (textCSSNode.mIsBackgroundColorSet) {
      ops.add(new SetSpanOperation(
              start,
              end,
              new BackgroundColorSpan(textCSSNode.mBackgroundColor)));
    }
    if (textCSSNode.mFontSize != UNSET) {
      ops.add(new SetSpanOperation(start, end, new AbsoluteSizeSpan(textCSSNode.mFontSize)));
    }
    if (textCSSNode.mFontStyle != UNSET ||
        textCSSNode.mFontWeight != UNSET ||
        textCSSNode.mFontFamily != null) {
      ops.add(new SetSpanOperation(
              start,
              end,
              new CustomStyleSpan(
                  textCSSNode.mFontStyle,
                  textCSSNode.mFontWeight,
                  textCSSNode.mFontFamily,
                  textCSSNode.getThemedContext().getAssets())));
    }
    if (textCSSNode.mTextShadowOffsetDx != 0 || textCSSNode.mTextShadowOffsetDy != 0) {
      ops.add(new SetSpanOperation(
              start,
              end,
              new ShadowStyleSpan(
                  textCSSNode.mTextShadowOffsetDx,
                  textCSSNode.mTextShadowOffsetDy,
                  textCSSNode.mTextShadowRadius,
                  textCSSNode.mTextShadowColor)));
    }
    ops.add(new SetSpanOperation(start, end, new ReactTagSpan(textCSSNode.getReactTag())));
  }
}

项目：react-native-ibeacon-android 文件：ReactTextShadowNode.java

@Override
public void measure(CSSNode node, float width, float height, MeasureOutput measureOutput) {
  // TODO(5578671): Handle text direction (see View#getTextDirectionHeuristic)
  ReactTextShadowNode reactCSSNode = (ReactTextShadowNode) node;
  TextPaint textPaint = sTextPaintInstance;
  Layout layout;
  Spanned text = Assertions.assertNotNull(
      reactCSSNode.mPreparedSpannableText,
      "Spannable element has not been prepared in onBeforeLayout");
  BoringLayout.Metrics boring = BoringLayout.isBoring(text, textPaint);
  float desiredWidth = boring == null ?
      Layout.getDesiredWidth(text, textPaint) : Float.NaN;

  if (boring == null &&
      (CSSConstants.isUndefined(width) ||
          (!CSSConstants.isUndefined(desiredWidth) && desiredWidth <= width))) {
    // Is used when the width is not known and the text is not boring, ie. if it contains
    // unicode characters.
    layout = new StaticLayout(
        text,
        textPaint,
        (int) Math.ceil(desiredWidth),
        Layout.Alignment.ALIGN_NORMAL,
        1,
        0,
        true);
  } else if (boring != null && (CSSConstants.isUndefined(width) || boring.width <= width)) {
    // Is used for single-line, boring text when the width is either unknown or bigger
    // than the width of the text.
    layout = BoringLayout.make(
        text,
        textPaint,
        boring.width,
        Layout.Alignment.ALIGN_NORMAL,
        1,
        0,
        boring,
        true);
  } else {
    // Is used for multiline, boring text and the width is known.
    layout = new StaticLayout(
        text,
        textPaint,
        (int) width,
        Layout.Alignment.ALIGN_NORMAL,
        1,
        0,
        true);
  }

  measureOutput.height = layout.getHeight();
  measureOutput.width = layout.getWidth();
  if (reactCSSNode.mNumberOfLines != UNSET &&
      reactCSSNode.mNumberOfLines < layout.getLineCount()) {
    measureOutput.height = layout.getLineBottom(reactCSSNode.mNumberOfLines - 1);
  }
  if (reactCSSNode.mLineHeight != UNSET) {
    int lines = reactCSSNode.mNumberOfLines != UNSET
        ? Math.min(reactCSSNode.mNumberOfLines, layout.getLineCount())
        : layout.getLineCount();
    float lineHeight = PixelUtil.toPixelFromSP(reactCSSNode.mLineHeight);
    measureOutput.height = lineHeight * lines;
  }
}

项目：react-native-box-loaders 文件：ReactTextShadowNode.java

private static void buildSpannedFromTextCSSNode(
    ReactTextShadowNode textCSSNode,
    SpannableStringBuilder sb,
    List<SetSpanOperation> ops) {
  int start = sb.length();
  if (textCSSNode.mText != null) {
    sb.append(textCSSNode.mText);
  }
  for (int i = 0, length = textCSSNode.getChildCount(); i < length; i++) {
    CSSNode child = textCSSNode.getChildAt(i);
    if (child instanceof ReactTextShadowNode) {
      buildSpannedFromTextCSSNode((ReactTextShadowNode) child, sb, ops);
    } else if (child instanceof ReactTextInlineImageShadowNode) {
      // We make the image take up 1 character in the span and put a corresponding character into
      // the text so that the image doesn't run over any following text.
      sb.append(INLINE_IMAGE_PLACEHOLDER);
      ops.add(
        new SetSpanOperation(
          sb.length() - INLINE_IMAGE_PLACEHOLDER.length(),
          sb.length(),
          ((ReactTextInlineImageShadowNode) child).buildInlineImageSpan()));
    } else {
      throw new IllegalViewOperationException("Unexpected view type nested under text node: "
              + child.getClass());
    }
    ((ReactShadowNode) child).markUpdateSeen();
  }
  int end = sb.length();
  if (end >= start) {
    if (textCSSNode.mIsColorSet) {
      ops.add(new SetSpanOperation(start, end, new ForegroundColorSpan(textCSSNode.mColor)));
    }
    if (textCSSNode.mIsBackgroundColorSet) {
      ops.add(new SetSpanOperation(
              start,
              end,
              new BackgroundColorSpan(textCSSNode.mBackgroundColor)));
    }
    if (textCSSNode.mFontSize != UNSET) {
      ops.add(new SetSpanOperation(start, end, new AbsoluteSizeSpan(textCSSNode.mFontSize)));
    }
    if (textCSSNode.mFontStyle != UNSET ||
        textCSSNode.mFontWeight != UNSET ||
        textCSSNode.mFontFamily != null) {
      ops.add(new SetSpanOperation(
              start,
              end,
              new CustomStyleSpan(
                  textCSSNode.mFontStyle,
                  textCSSNode.mFontWeight,
                  textCSSNode.mFontFamily,
                  textCSSNode.getThemedContext().getAssets())));
    }
    if (textCSSNode.mIsUnderlineTextDecorationSet) {
      ops.add(new SetSpanOperation(start, end, new UnderlineSpan()));
    }
    if (textCSSNode.mIsLineThroughTextDecorationSet) {
      ops.add(new SetSpanOperation(start, end, new StrikethroughSpan()));
    }
    if (textCSSNode.mTextShadowOffsetDx != 0 || textCSSNode.mTextShadowOffsetDy != 0) {
      ops.add(new SetSpanOperation(
              start,
              end,
              new ShadowStyleSpan(
                  textCSSNode.mTextShadowOffsetDx,
                  textCSSNode.mTextShadowOffsetDy,
                  textCSSNode.mTextShadowRadius,
                  textCSSNode.mTextShadowColor)));
    }
    ops.add(new SetSpanOperation(start, end, new ReactTagSpan(textCSSNode.getReactTag())));
  }
}

项目：react-native-box-loaders 文件：ReactTextShadowNode.java

@Override
public void measure(
    CSSNode node,
    float width,
    CSSMeasureMode widthMode,
    float height,
    CSSMeasureMode heightMode,
    MeasureOutput measureOutput) {
  // TODO(5578671): Handle text direction (see View#getTextDirectionHeuristic)
  ReactTextShadowNode reactCSSNode = (ReactTextShadowNode) node;
  TextPaint textPaint = sTextPaintInstance;
  Layout layout;
  Spanned text = Assertions.assertNotNull(
      reactCSSNode.mPreparedSpannableText,
      "Spannable element has not been prepared in onBeforeLayout");
  BoringLayout.Metrics boring = BoringLayout.isBoring(text, textPaint);
  float desiredWidth = boring == null ?
      Layout.getDesiredWidth(text, textPaint) : Float.NaN;

  // technically, width should never be negative, but there is currently a bug in
  boolean unconstrainedWidth = widthMode == CSSMeasureMode.UNDEFINED || width < 0;

  if (boring == null &&
      (unconstrainedWidth ||
          (!CSSConstants.isUndefined(desiredWidth) && desiredWidth <= width))) {
    // Is used when the width is not known and the text is not boring, ie. if it contains
    // unicode characters.
    layout = new StaticLayout(
        text,
        textPaint,
        (int) Math.ceil(desiredWidth),
        Layout.Alignment.ALIGN_NORMAL,
        1,
        0,
        true);
  } else if (boring != null && (unconstrainedWidth || boring.width <= width)) {
    // Is used for single-line, boring text when the width is either unknown or bigger
    // than the width of the text.
    layout = BoringLayout.make(
        text,
        textPaint,
        boring.width,
        Layout.Alignment.ALIGN_NORMAL,
        1,
        0,
        boring,
        true);
  } else {
    // Is used for multiline, boring text and the width is known.
    layout = new StaticLayout(
        text,
        textPaint,
        (int) width,
        Layout.Alignment.ALIGN_NORMAL,
        1,
        0,
        true);
  }

  measureOutput.height = layout.getHeight();
  measureOutput.width = layout.getWidth();
  if (reactCSSNode.mNumberOfLines != UNSET &&
      reactCSSNode.mNumberOfLines < layout.getLineCount()) {
    measureOutput.height = layout.getLineBottom(reactCSSNode.mNumberOfLines - 1);
  }
  if (reactCSSNode.mLineHeight != UNSET) {
    int lines = reactCSSNode.mNumberOfLines != UNSET
        ? Math.min(reactCSSNode.mNumberOfLines, layout.getLineCount())
        : layout.getLineCount();
    float lineHeight = PixelUtil.toPixelFromSP(reactCSSNode.mLineHeight);
    measureOutput.height = lineHeight * lines;
  }
}

项目：BaiduMapKit 文件：BaiduMapShadowNode.java

@Override
public void measure(CSSNode node, float width, MeasureOutput measureOutput) {
    measureOutput.width = width;
}