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  3. com.facebook.react.uimanager.PixelUtil

Java 类com.facebook.react.uimanager.PixelUtil 实例源码

项目：RNLearn_Project1    文件：ReactImageManager.java    
@ReactPropGroup(names = {
    ViewProps.BORDER_RADIUS,
    ViewProps.BORDER_TOP_LEFT_RADIUS,
    ViewProps.BORDER_TOP_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_LEFT_RADIUS
}, defaultFloat = YogaConstants.UNDEFINED)
public void setBorderRadius(ReactImageView view, int index, float borderRadius) {
  if (!YogaConstants.isUndefined(borderRadius)) {
    borderRadius = PixelUtil.toPixelFromDIP(borderRadius);
  }

  if (index == 0) {
    view.setBorderRadius(borderRadius);
  } else {
    view.setBorderRadius(borderRadius, index - 1);
  }
}
项目：RNLearn_Project1    文件：ReactHorizontalScrollViewManager.java    
@ReactPropGroup(names = {
    ViewProps.BORDER_RADIUS,
    ViewProps.BORDER_TOP_LEFT_RADIUS,
    ViewProps.BORDER_TOP_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_LEFT_RADIUS
}, defaultFloat = YogaConstants.UNDEFINED)
public void setBorderRadius(ReactHorizontalScrollView view, int index, float borderRadius) {
  if (!YogaConstants.isUndefined(borderRadius)) {
    borderRadius = PixelUtil.toPixelFromDIP(borderRadius);
  }

  if (index == 0) {
    view.setBorderRadius(borderRadius);
  } else {
    view.setBorderRadius(borderRadius, index - 1);
  }
}
项目：RNLearn_Project1    文件：RCTVirtualText.java    
@ReactProp(name = PROP_SHADOW_OFFSET)
public void setTextShadowOffset(@Nullable ReadableMap offsetMap) {
  float dx = 0;
  float dy = 0;
  if (offsetMap != null) {
    if (offsetMap.hasKey("width")) {
      dx = PixelUtil.toPixelFromDIP(offsetMap.getDouble("width"));
    }
    if (offsetMap.hasKey("height")) {
      dy = PixelUtil.toPixelFromDIP(offsetMap.getDouble("height"));
    }
  }

  if (!mShadowStyleSpan.offsetMatches(dx, dy)) {
    getShadowSpan().setOffset(dx, dy);
    notifyChanged(false);
  }
}
项目：RNLearn_Project1    文件：RCTTextInput.java    
@Override
public long measure(
    YogaNode node,
    float width,
    YogaMeasureMode widthMode,
    float height,
    YogaMeasureMode heightMode) {
  // measure() should never be called before setThemedContext()
  EditText editText = Assertions.assertNotNull(mEditText);

  int fontSize = getFontSize();
  editText.setTextSize(
      TypedValue.COMPLEX_UNIT_PX,
      fontSize == UNSET ?
          (int) Math.ceil(PixelUtil.toPixelFromSP(ViewDefaults.FONT_SIZE_SP)) : fontSize);

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

  editText.measure(
      MeasureUtil.getMeasureSpec(width, widthMode),
      MeasureUtil.getMeasureSpec(height, heightMode));
  return YogaMeasureOutput.make(editText.getMeasuredWidth(), editText.getMeasuredHeight());
}
项目：RNLearn_Project1    文件：ReactTextInputManager.java    
@ReactPropGroup(names = {
    ViewProps.BORDER_RADIUS,
    ViewProps.BORDER_TOP_LEFT_RADIUS,
    ViewProps.BORDER_TOP_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_LEFT_RADIUS
}, defaultFloat = YogaConstants.UNDEFINED)
public void setBorderRadius(ReactEditText view, int index, float borderRadius) {
  if (!YogaConstants.isUndefined(borderRadius)) {
    borderRadius = PixelUtil.toPixelFromDIP(borderRadius);
  }

  if (index == 0) {
    view.setBorderRadius(borderRadius);
  } else {
    view.setBorderRadius(borderRadius, index - 1);
  }
}
项目：RNLearn_Project1    文件：ReactTextInputManager.java    
@Override
public void onLayout() {
  int contentWidth = mEditText.getWidth();
  int contentHeight = mEditText.getHeight();

  // Use instead size of text content within EditText when available
  if (mEditText.getLayout() != null) {
    contentWidth = mEditText.getCompoundPaddingLeft() + mEditText.getLayout().getWidth() +
      mEditText.getCompoundPaddingRight();
    contentHeight = mEditText.getCompoundPaddingTop() + mEditText.getLayout().getHeight() +
      mEditText.getCompoundPaddingBottom();
  }

  if (contentWidth != mPreviousContentWidth || contentHeight != mPreviousContentHeight) {
    mPreviousContentHeight = contentHeight;
    mPreviousContentWidth = contentWidth;

    mEventDispatcher.dispatchEvent(
      new ReactContentSizeChangedEvent(
        mEditText.getId(),
        PixelUtil.toDIPFromPixel(contentWidth),
        PixelUtil.toDIPFromPixel(contentHeight)));
  }
}
项目：RNLearn_Project1    文件：ReactTextViewManager.java    
@ReactPropGroup(names = {
        ViewProps.BORDER_RADIUS,
        ViewProps.BORDER_TOP_LEFT_RADIUS,
        ViewProps.BORDER_TOP_RIGHT_RADIUS,
        ViewProps.BORDER_BOTTOM_RIGHT_RADIUS,
        ViewProps.BORDER_BOTTOM_LEFT_RADIUS
}, defaultFloat = YogaConstants.UNDEFINED)
public void setBorderRadius(ReactTextView view, int index, float borderRadius) {
  if (!YogaConstants.isUndefined(borderRadius)) {
    borderRadius = PixelUtil.toPixelFromDIP(borderRadius);
  }

  if (index == 0) {
    view.setBorderRadius(borderRadius);
  } else {
    view.setBorderRadius(borderRadius, index - 1);
  }
}
项目：RNLearn_Project1    文件：ReactTextShadowNode.java    
@ReactProp(name = PROP_SHADOW_OFFSET)
public void setTextShadowOffset(ReadableMap offsetMap) {
  mTextShadowOffsetDx = 0;
  mTextShadowOffsetDy = 0;

  if (offsetMap != null) {
    if (offsetMap.hasKey(PROP_SHADOW_OFFSET_WIDTH) &&
        !offsetMap.isNull(PROP_SHADOW_OFFSET_WIDTH)) {
      mTextShadowOffsetDx =
          PixelUtil.toPixelFromDIP(offsetMap.getDouble(PROP_SHADOW_OFFSET_WIDTH));
    }
    if (offsetMap.hasKey(PROP_SHADOW_OFFSET_HEIGHT) &&
        !offsetMap.isNull(PROP_SHADOW_OFFSET_HEIGHT)) {
      mTextShadowOffsetDy =
          PixelUtil.toPixelFromDIP(offsetMap.getDouble(PROP_SHADOW_OFFSET_HEIGHT));
    }
  }

  markUpdated();
}
项目：RNLearn_Project1    文件：ReactHorizontalScrollViewTestCase.java    
public void testScrollEvents() {
  HorizontalScrollView scrollView = getViewAtPath(0);

  dragLeft();

  waitForBridgeAndUIIdle();
  mScrollListenerModule.waitForScrollIdle();
  waitForBridgeAndUIIdle();

  ArrayList<Double> xOffsets = mScrollListenerModule.getXOffsets();
  assertFalse("Expected to receive at least one scroll event", xOffsets.isEmpty());
  assertTrue("Expected offset to be greater than 0", xOffsets.get(xOffsets.size() - 1) > 0);
  assertTrue(
      "Expected no item click event fired",
      mScrollListenerModule.getItemsPressed().isEmpty());
  assertEquals(
      "Expected last offset to be offset of scroll view",
      PixelUtil.toDIPFromPixel(scrollView.getScrollX()),
      xOffsets.get(xOffsets.size() - 1).doubleValue(),
      1e-5);
}
项目：RNLearn_Project1    文件：ReactHorizontalScrollViewManager.java    
@ReactPropGroup(names = {
    ViewProps.BORDER_RADIUS,
    ViewProps.BORDER_TOP_LEFT_RADIUS,
    ViewProps.BORDER_TOP_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_LEFT_RADIUS
}, defaultFloat = YogaConstants.UNDEFINED)
public void setBorderRadius(ReactHorizontalScrollView view, int index, float borderRadius) {
  if (!YogaConstants.isUndefined(borderRadius)) {
    borderRadius = PixelUtil.toPixelFromDIP(borderRadius);
  }

  if (index == 0) {
    view.setBorderRadius(borderRadius);
  } else {
    view.setBorderRadius(borderRadius, index - 1);
  }
}
项目：RNLearn_Project1    文件：ReactScrollViewManager.java    
@ReactPropGroup(names = {
    ViewProps.BORDER_RADIUS,
    ViewProps.BORDER_TOP_LEFT_RADIUS,
    ViewProps.BORDER_TOP_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_LEFT_RADIUS
}, defaultFloat = YogaConstants.UNDEFINED)
public void setBorderRadius(ReactScrollView view, int index, float borderRadius) {
  if (!YogaConstants.isUndefined(borderRadius)) {
    borderRadius = PixelUtil.toPixelFromDIP(borderRadius);
  }

  if (index == 0) {
    view.setBorderRadius(borderRadius);
  } else {
    view.setBorderRadius(borderRadius, index - 1);
  }
}
项目：RNLearn_Project1    文件：ReactImageManager.java    
@ReactPropGroup(names = {
    ViewProps.BORDER_RADIUS,
    ViewProps.BORDER_TOP_LEFT_RADIUS,
    ViewProps.BORDER_TOP_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_LEFT_RADIUS
}, defaultFloat = YogaConstants.UNDEFINED)
public void setBorderRadius(ReactImageView view, int index, float borderRadius) {
  if (!YogaConstants.isUndefined(borderRadius)) {
    borderRadius = PixelUtil.toPixelFromDIP(borderRadius);
  }

  if (index == 0) {
    view.setBorderRadius(borderRadius);
  } else {
    view.setBorderRadius(borderRadius, index - 1);
  }
}
项目：RNLearn_Project1    文件：ReactScrollViewTestCase.java    
public void testScrollEvents() {
  ScrollView scrollView = getViewAtPath(0);

  dragUp();

  waitForBridgeAndUIIdle();
  mScrollListenerModule.waitForScrollIdle();
  waitForBridgeAndUIIdle();

  ArrayList<Double> yOffsets = mScrollListenerModule.getYOffsets();
  assertFalse("Expected to receive at least one scroll event", yOffsets.isEmpty());
  assertTrue("Expected offset to be greater than 0", yOffsets.get(yOffsets.size() - 1) > 0);
  assertTrue(
      "Expected no item click event fired",
      mScrollListenerModule.getItemsPressed().isEmpty());
  assertEquals(
      "Expected last offset to be offset of scroll view",
      PixelUtil.toDIPFromPixel(scrollView.getScrollY()),
      yOffsets.get(yOffsets.size() - 1).doubleValue(),
      1e-5);
  assertTrue("Begin and End Drag should be called", mScrollListenerModule.dragEventsMatch());
}
项目：RNLearn_Project1    文件：ReactRootView.java    
private void checkForKeyboardEvents() {
  getRootView().getWindowVisibleDisplayFrame(mVisibleViewArea);
  final int heightDiff =
    DisplayMetricsHolder.getWindowDisplayMetrics().heightPixels - mVisibleViewArea.bottom;
  if (mKeyboardHeight != heightDiff && heightDiff > mMinKeyboardHeightDetected) {
    // keyboard is now showing, or the keyboard height has changed
    mKeyboardHeight = heightDiff;
    WritableMap params = Arguments.createMap();
    WritableMap coordinates = Arguments.createMap();
    coordinates.putDouble("screenY", PixelUtil.toDIPFromPixel(mVisibleViewArea.bottom));
    coordinates.putDouble("screenX", PixelUtil.toDIPFromPixel(mVisibleViewArea.left));
    coordinates.putDouble("width", PixelUtil.toDIPFromPixel(mVisibleViewArea.width()));
    coordinates.putDouble("height", PixelUtil.toDIPFromPixel(mKeyboardHeight));
    params.putMap("endCoordinates", coordinates);
    sendEvent("keyboardDidShow", params);
  } else if (mKeyboardHeight != 0 && heightDiff <= mMinKeyboardHeightDetected) {
    // keyboard is now hidden
    mKeyboardHeight = 0;
    sendEvent("keyboardDidHide", null);
  }
}
项目：RNLearn_Project1    文件：ViewRenderingTestCase.java    
public void testMarginUpdateDoesntForgetPreviousValue() {
  mCatalystInstance.getJSModule(ViewRenderingTestModule.class).renderMarginApplication(mRootTag);
  waitForBridgeAndUIIdle();

  View view = getViewAtPath(mRootView);

  // before: margin: 10, marginLeft: 20
  mCatalystInstance.getJSModule(ViewRenderingTestModule.class).updateMargins();
  waitForBridgeAndUIIdle();
  // after: margin: 15; it should not forget marginLeft was set to 20

  int expectedMargin = Math.round(PixelUtil.toPixelFromDIP(15));
  int expectedMarginLeft = Math.round(PixelUtil.toPixelFromDIP(20));

  assertEquals(expectedMarginLeft, (int) view.getX());
  assertEquals(expectedMargin, (int) view.getY());
}
项目：RNLearn_Project1    文件：ReactTextShadowNode.java    
@ReactProp(name = PROP_SHADOW_OFFSET)
public void setTextShadowOffset(ReadableMap offsetMap) {
  mTextShadowOffsetDx = 0;
  mTextShadowOffsetDy = 0;

  if (offsetMap != null) {
    if (offsetMap.hasKey(PROP_SHADOW_OFFSET_WIDTH) &&
        !offsetMap.isNull(PROP_SHADOW_OFFSET_WIDTH)) {
      mTextShadowOffsetDx =
          PixelUtil.toPixelFromDIP(offsetMap.getDouble(PROP_SHADOW_OFFSET_WIDTH));
    }
    if (offsetMap.hasKey(PROP_SHADOW_OFFSET_HEIGHT) &&
        !offsetMap.isNull(PROP_SHADOW_OFFSET_HEIGHT)) {
      mTextShadowOffsetDy =
          PixelUtil.toPixelFromDIP(offsetMap.getDouble(PROP_SHADOW_OFFSET_HEIGHT));
    }
  }

  markUpdated();
}
项目：RNLearn_Project1    文件：ReactScrollViewManager.java    
@ReactPropGroup(names = {
    ViewProps.BORDER_RADIUS,
    ViewProps.BORDER_TOP_LEFT_RADIUS,
    ViewProps.BORDER_TOP_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_LEFT_RADIUS
}, defaultFloat = YogaConstants.UNDEFINED)
public void setBorderRadius(ReactScrollView view, int index, float borderRadius) {
  if (!YogaConstants.isUndefined(borderRadius)) {
    borderRadius = PixelUtil.toPixelFromDIP(borderRadius);
  }

  if (index == 0) {
    view.setBorderRadius(borderRadius);
  } else {
    view.setBorderRadius(borderRadius, index - 1);
  }
}
项目：RNLearn_Project1    文件：ReactScrollViewTestCase.java    
public void testScrollEvents() {
  ScrollView scrollView = getViewAtPath(0);

  dragUp();

  waitForBridgeAndUIIdle();
  mScrollListenerModule.waitForScrollIdle();
  waitForBridgeAndUIIdle();

  ArrayList<Double> yOffsets = mScrollListenerModule.getYOffsets();
  assertFalse("Expected to receive at least one scroll event", yOffsets.isEmpty());
  assertTrue("Expected offset to be greater than 0", yOffsets.get(yOffsets.size() - 1) > 0);
  assertTrue(
      "Expected no item click event fired",
      mScrollListenerModule.getItemsPressed().isEmpty());
  assertEquals(
      "Expected last offset to be offset of scroll view",
      PixelUtil.toDIPFromPixel(scrollView.getScrollY()),
      yOffsets.get(yOffsets.size() - 1).doubleValue(),
      1e-5);
  assertTrue("Begin and End Drag should be called", mScrollListenerModule.dragEventsMatch());
}
项目：RNLearn_Project1    文件：ReactHorizontalScrollViewTestCase.java    
public void testScrollEvents() {
  HorizontalScrollView scrollView = getViewAtPath(0);

  dragLeft();

  waitForBridgeAndUIIdle();
  mScrollListenerModule.waitForScrollIdle();
  waitForBridgeAndUIIdle();

  ArrayList<Double> xOffsets = mScrollListenerModule.getXOffsets();
  assertFalse("Expected to receive at least one scroll event", xOffsets.isEmpty());
  assertTrue("Expected offset to be greater than 0", xOffsets.get(xOffsets.size() - 1) > 0);
  assertTrue(
      "Expected no item click event fired",
      mScrollListenerModule.getItemsPressed().isEmpty());
  assertEquals(
      "Expected last offset to be offset of scroll view",
      PixelUtil.toDIPFromPixel(scrollView.getScrollX()),
      xOffsets.get(xOffsets.size() - 1).doubleValue(),
      1e-5);
}
项目：RNLearn_Project1    文件：RCTVirtualText.java    
@ReactProp(name = PROP_SHADOW_OFFSET)
public void setTextShadowOffset(@Nullable ReadableMap offsetMap) {
  float dx = 0;
  float dy = 0;
  if (offsetMap != null) {
    if (offsetMap.hasKey("width")) {
      dx = PixelUtil.toPixelFromDIP(offsetMap.getDouble("width"));
    }
    if (offsetMap.hasKey("height")) {
      dy = PixelUtil.toPixelFromDIP(offsetMap.getDouble("height"));
    }
  }

  if (!mShadowStyleSpan.offsetMatches(dx, dy)) {
    getShadowSpan().setOffset(dx, dy);
    notifyChanged(false);
  }
}
项目：RNLearn_Project1    文件：RCTTextInput.java    
@Override
public long measure(
    YogaNodeAPI node,
    float width,
    YogaMeasureMode widthMode,
    float height,
    YogaMeasureMode heightMode) {
  // measure() should never be called before setThemedContext()
  EditText editText = Assertions.assertNotNull(mEditText);

  int fontSize = getFontSize();
  editText.setTextSize(
      TypedValue.COMPLEX_UNIT_PX,
      fontSize == UNSET ?
          (int) Math.ceil(PixelUtil.toPixelFromSP(ViewDefaults.FONT_SIZE_SP)) : fontSize);

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

  editText.measure(
      MeasureUtil.getMeasureSpec(width, widthMode),
      MeasureUtil.getMeasureSpec(height, heightMode));
  return YogaMeasureOutput.make(editText.getMeasuredWidth(), editText.getMeasuredHeight());
}
项目：RNLearn_Project1    文件：ReactTextInputManager.java    
@ReactPropGroup(names = {
    ViewProps.BORDER_RADIUS,
    ViewProps.BORDER_TOP_LEFT_RADIUS,
    ViewProps.BORDER_TOP_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_RIGHT_RADIUS,
    ViewProps.BORDER_BOTTOM_LEFT_RADIUS
}, defaultFloat = YogaConstants.UNDEFINED)
public void setBorderRadius(ReactEditText view, int index, float borderRadius) {
  if (!YogaConstants.isUndefined(borderRadius)) {
    borderRadius = PixelUtil.toPixelFromDIP(borderRadius);
  }

  if (index == 0) {
    view.setBorderRadius(borderRadius);
  } else {
    view.setBorderRadius(borderRadius, index - 1);
  }
}
项目：RNLearn_Project1    文件：ReactTextInputManager.java    
@Override
public void onLayout() {
  int contentWidth = mEditText.getWidth();
  int contentHeight = mEditText.getHeight();

  // Use instead size of text content within EditText when available
  if (mEditText.getLayout() != null) {
    contentWidth = mEditText.getCompoundPaddingLeft() + mEditText.getLayout().getWidth() +
      mEditText.getCompoundPaddingRight();
    contentHeight = mEditText.getCompoundPaddingTop() + mEditText.getLayout().getHeight() +
      mEditText.getCompoundPaddingBottom();
  }

  if (contentWidth != mPreviousContentWidth || contentHeight != mPreviousContentHeight) {
    mPreviousContentHeight = contentHeight;
    mPreviousContentWidth = contentWidth;

    mEventDispatcher.dispatchEvent(
      new ReactContentSizeChangedEvent(
        mEditText.getId(),
        PixelUtil.toDIPFromPixel(contentWidth),
        PixelUtil.toDIPFromPixel(contentHeight)));
  }
}
项目：RNLearn_Project1    文件：ReactViewManager.java    
@Override
public void receiveCommand(ReactViewGroup root, int commandId, @Nullable ReadableArray args) {
  switch (commandId) {
    case CMD_HOTSPOT_UPDATE: {
      if (args == null || args.size() != 2) {
        throw new JSApplicationIllegalArgumentException(
            "Illegal number of arguments for 'updateHotspot' command");
      }
      if (Build.VERSION.SDK_INT >= 21) {
        float x = PixelUtil.toPixelFromDIP(args.getDouble(0));
        float y = PixelUtil.toPixelFromDIP(args.getDouble(1));
        root.drawableHotspotChanged(x, y);
      }
      break;
    }
    case CMD_SET_PRESSED: {
      if (args == null || args.size() != 1) {
        throw new JSApplicationIllegalArgumentException(
            "Illegal number of arguments for 'setPressed' command");
      }
      root.setPressed(args.getBoolean(0));
      break;
    }
  }
}
项目：react-native-collapsing-toolbar    文件：CollapsingToolbarLayoutManager.java    
@Override
public void addView(CollapsingToolbarLayoutView parent, View child, int index) {
    super.addView(parent, child, index);
    if (child instanceof Toolbar) {
        Toolbar toolbar = (Toolbar) child;
        int toolbarHeight = (int) PixelUtil.toPixelFromDIP(height);
        CollapsingToolbarLayout.LayoutParams params = new CollapsingToolbarLayout.LayoutParams(
            CollapsingToolbarLayout.LayoutParams.MATCH_PARENT,
            toolbarHeight
        );
        params.setCollapseMode(CollapsingToolbarLayout.LayoutParams.COLLAPSE_MODE_PIN);
        toolbar.setLayoutParams(params);
        toolbar.requestLayout();
    }
}
项目：react-native-recyclerview-list    文件：ContentSizeChangeEvent.java    
@Override
public void dispatch(RCTEventEmitter rctEventEmitter) {
  WritableMap data = Arguments.createMap();
  data.putDouble("width", PixelUtil.toDIPFromPixel(mWidth));
  data.putDouble("height", PixelUtil.toDIPFromPixel(mHeight));
  rctEventEmitter.receiveEvent(getViewTag(), EVENT_NAME, data);
}
项目：react-native-recyclerview-list    文件：RecyclerViewBackedScrollView.java    
public void smoothScrollToPosition(int position, final ScrollOptions options) {
    final RecyclerView.SmoothScroller smoothScroller = new LinearSmoothScroller(this.getContext()) {
        @Override
        protected int getVerticalSnapPreference() {
            return LinearSmoothScroller.SNAP_TO_START;
        }

        @Override
        public PointF computeScrollVectorForPosition(int targetPosition) {
            return ((LinearLayoutManager) this.getLayoutManager()).computeScrollVectorForPosition(targetPosition);
        }

        @Override
        protected float calculateSpeedPerPixel(DisplayMetrics displayMetrics) {
            if (options.millisecondsPerInch != null) {
                return options.millisecondsPerInch / displayMetrics.densityDpi;
            } else {
                return super.calculateSpeedPerPixel(displayMetrics);
            }
        }

        @Override
        public int calculateDtToFit(int viewStart, int viewEnd, int boxStart, int boxEnd, int snapPreference) {
            int calc = super.calculateDtToFit(viewStart, viewEnd, boxStart, boxEnd, snapPreference);
            if (options.viewPosition != null) {
                int viewHeight = viewEnd - viewStart;
                int boxHeight = boxEnd - boxStart;
                float viewOffset = options.viewOffset != null ? PixelUtil.toPixelFromDIP(options.viewOffset) : 0;
                float target = boxStart + (boxHeight - viewHeight) * options.viewPosition + viewOffset;
                return (int) (target - viewStart);
            } else {
                return super.calculateDtToFit(viewStart, viewEnd, boxStart, boxEnd, snapPreference);
            }
        }
    };

    smoothScroller.setTargetPosition(position);
    this.getLayoutManager().startSmoothScroll(smoothScroller);
}
项目：react-native-android-bottom-navigation    文件：RNBottomNavigation.java    
private IconImageInfo getIconImageInfo(ReadableMap source) {
    if (source.hasKey("width") && source.hasKey("height")) {
        final int width = Math.round(PixelUtil.toPixelFromDIP(source.getInt("width")));
        final int height = Math.round(PixelUtil.toPixelFromDIP(source.getInt("height")));
        return new IconImageInfo(width, height);
    } else {
        return null;
    }
}
项目：RNLearn_Project1    文件：RCTVirtualText.java    
@ReactProp(name = PROP_SHADOW_RADIUS)
public void setTextShadowRadius(float textShadowRadius) {
  textShadowRadius = PixelUtil.toPixelFromDIP(textShadowRadius);
  if (mShadowStyleSpan.getRadius() != textShadowRadius) {
    getShadowSpan().setRadius(textShadowRadius);
    notifyChanged(false);
  }
}
项目：RNLearn_Project1    文件：ViewRenderingTestCase.java    
public void testMarginsApplied() {
  mCatalystInstance.getJSModule(ViewRenderingTestModule.class).renderMarginApplication(mRootTag);
  waitForBridgeAndUIIdle();

  View view = getViewAtPath(mRootView);

  int expectedMargin = Math.round(PixelUtil.toPixelFromDIP(10));
  int expectedMarginLeft = Math.round(PixelUtil.toPixelFromDIP(20));

  assertEquals(expectedMarginLeft, (int) view.getX());
  assertEquals(expectedMargin, (int) view.getY());
}
项目：RNLearn_Project1    文件：RCTView.java    
@Override
public void setBorderWidths(int index, float borderWidth) {
  super.setBorderWidths(index, borderWidth);

  int type = SPACING_TYPES[index];
  getMutableBorder().setBorderWidth(type, PixelUtil.toPixelFromDIP(borderWidth));
}
项目：RNLearn_Project1    文件：RCTView.java    
@ReactProp(name = "borderRadius")
public void setBorderRadius(float borderRadius) {
  mClipRadius = borderRadius;
  if (mClipToBounds && borderRadius > DrawView.MINIMUM_ROUNDED_CLIPPING_VALUE) {
    // mount to a view if we are overflow: hidden and are clipping, so that we can do one
    // clipPath to clip all the children of this node (both DrawCommands and Views).
    forceMountToView();
  }
  getMutableBorder().setBorderRadius(PixelUtil.toPixelFromDIP(borderRadius));
}
项目：RNLearn_Project1    文件：RCTText.java    
@ReactProp(name = ViewProps.LINE_HEIGHT, defaultDouble = Double.NaN)
public void setLineHeight(double lineHeight) {
  if (Double.isNaN(lineHeight)) {
    mSpacingMult = 1.0f;
    mSpacingAdd = 0.0f;
  } else {
    mSpacingMult = 0.0f;
    mSpacingAdd = PixelUtil.toPixelFromSP((float) lineHeight);
  }
  notifyChanged(true);
}
项目：RNLearn_Project1    文件：ScrollEvent.java    
private WritableMap serializeEventData() {
  WritableMap contentInset = Arguments.createMap();
  contentInset.putDouble("top", 0);
  contentInset.putDouble("bottom", 0);
  contentInset.putDouble("left", 0);
  contentInset.putDouble("right", 0);

  WritableMap contentOffset = Arguments.createMap();
  contentOffset.putDouble("x", PixelUtil.toDIPFromPixel(mScrollX));
  contentOffset.putDouble("y", PixelUtil.toDIPFromPixel(mScrollY));

  WritableMap contentSize = Arguments.createMap();
  contentSize.putDouble("width", PixelUtil.toDIPFromPixel(mContentWidth));
  contentSize.putDouble("height", PixelUtil.toDIPFromPixel(mContentHeight));

  WritableMap layoutMeasurement = Arguments.createMap();
  layoutMeasurement.putDouble("width", PixelUtil.toDIPFromPixel(mScrollViewWidth));
  layoutMeasurement.putDouble("height", PixelUtil.toDIPFromPixel(mScrollViewHeight));

  WritableMap event = Arguments.createMap();
  event.putMap("contentInset", contentInset);
  event.putMap("contentOffset", contentOffset);
  event.putMap("contentSize", contentSize);
  event.putMap("layoutMeasurement", layoutMeasurement);

  event.putInt("target", getViewTag());
  event.putBoolean("responderIgnoreScroll", true);
  return event;
}
项目：RNLearn_Project1    文件：RCTViewManager.java    
@ReactProp(name = "hitSlop")
public void setHitSlop(FlatViewGroup view, @Nullable ReadableMap hitSlop) {
  if (hitSlop == null) {
    view.setHitSlopRect(null);
  } else {
    view.setHitSlopRect(new Rect(
        (int) PixelUtil.toPixelFromDIP(hitSlop.getDouble("left")),
        (int) PixelUtil.toPixelFromDIP(hitSlop.getDouble("top")),
        (int) PixelUtil.toPixelFromDIP(hitSlop.getDouble("right")),
        (int) PixelUtil.toPixelFromDIP(hitSlop.getDouble("bottom"))
    ));
  }
}
项目：RNLearn_Project1    文件：ReactTextInputManager.java    
@Override
public ReactEditText createViewInstance(ThemedReactContext context) {
  ReactEditText editText = new ReactEditText(context);
  int inputType = editText.getInputType();
  editText.setInputType(inputType & (~InputType.TYPE_TEXT_FLAG_MULTI_LINE));
  editText.setReturnKeyType("done");
  editText.setTextSize(
      TypedValue.COMPLEX_UNIT_PX,
      (int) Math.ceil(PixelUtil.toPixelFromSP(ViewDefaults.FONT_SIZE_SP)));
  return editText;
}
项目：RNLearn_Project1    文件：ReactTextInputManager.java    
@ReactPropGroup(names = {
    ViewProps.BORDER_WIDTH,
    ViewProps.BORDER_LEFT_WIDTH,
    ViewProps.BORDER_RIGHT_WIDTH,
    ViewProps.BORDER_TOP_WIDTH,
    ViewProps.BORDER_BOTTOM_WIDTH,
}, defaultFloat = YogaConstants.UNDEFINED)
public void setBorderWidth(ReactEditText view, int index, float width) {
  if (!YogaConstants.isUndefined(width)) {
    width = PixelUtil.toPixelFromDIP(width);
  }
  view.setBorderWidth(SPACING_TYPES[index], width);
}
项目：RNLearn_Project1    文件：ReactTextInputShadowNode.java    
@Override
public long measure(
    YogaNode node,
    float width,
    YogaMeasureMode widthMode,
    float height,
    YogaMeasureMode heightMode) {
  // measure() should never be called before setThemedContext()
  EditText editText = Assertions.assertNotNull(mEditText);

  editText.setTextSize(
      TypedValue.COMPLEX_UNIT_PX,
      mFontSize == UNSET ?
          (int) Math.ceil(PixelUtil.toPixelFromSP(ViewDefaults.FONT_SIZE_SP)) : mFontSize);

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

  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    if (editText.getBreakStrategy() != mTextBreakStrategy) {
      editText.setBreakStrategy(mTextBreakStrategy);
    }
  }

  editText.measure(
      MeasureUtil.getMeasureSpec(width, widthMode),
      MeasureUtil.getMeasureSpec(height, heightMode));

  return YogaMeasureOutput.make(editText.getMeasuredWidth(), editText.getMeasuredHeight());
}
项目：RNLearn_Project1    文件：ContentSizeChangeEvent.java    
@Override
public void dispatch(RCTEventEmitter rctEventEmitter) {
  WritableMap data = Arguments.createMap();
  data.putDouble("width", PixelUtil.toDIPFromPixel(mWidth));
  data.putDouble("height", PixelUtil.toDIPFromPixel(mHeight));
  rctEventEmitter.receiveEvent(getViewTag(), EVENT_NAME, data);
}
项目：RNLearn_Project1    文件：TouchesHelper.java    
/**
 * Creates catalyst pointers array in format that is expected by RCTEventEmitter JS module from
 * given {@param event} instance. This method use {@param reactTarget} parameter to set as a
 * target view id associated with current gesture.
 */
private static WritableArray createsPointersArray(int reactTarget, TouchEvent event) {
  WritableArray touches = Arguments.createArray();
  MotionEvent motionEvent = event.getMotionEvent();

  // Calculate the coordinates for the target view.
  // The MotionEvent contains the X,Y of the touch in the coordinate space of the root view
  // The TouchEvent contains the X,Y of the touch in the coordinate space of the target view
  // Subtracting them allows us to get the coordinates of the target view's top left corner
  // We then use this when computing the view specific touches below
  // Since only one view is actually handling even multiple touches, the values are all relative
  // to this one target view.
  float targetViewCoordinateX = motionEvent.getX() - event.getViewX();
  float targetViewCoordinateY = motionEvent.getY() - event.getViewY();

  for (int index = 0; index < motionEvent.getPointerCount(); index++) {
    WritableMap touch = Arguments.createMap();
    // pageX,Y values are relative to the RootReactView
    // the motionEvent already contains coordinates in that view
    touch.putDouble(PAGE_X_KEY, PixelUtil.toDIPFromPixel(motionEvent.getX(index)));
    touch.putDouble(PAGE_Y_KEY, PixelUtil.toDIPFromPixel(motionEvent.getY(index)));
    // locationX,Y values are relative to the target view
    // To compute the values for the view, we subtract that views location from the event X,Y
    float locationX = motionEvent.getX(index) - targetViewCoordinateX;
    float locationY = motionEvent.getY(index) - targetViewCoordinateY;
    touch.putDouble(LOCATION_X_KEY, PixelUtil.toDIPFromPixel(locationX));
    touch.putDouble(LOCATION_Y_KEY, PixelUtil.toDIPFromPixel(locationY));
    touch.putInt(TARGET_KEY, reactTarget);
    touch.putDouble(TIMESTAMP_KEY, event.getTimestampMs());
    touch.putDouble(POINTER_IDENTIFIER_KEY, motionEvent.getPointerId(index));
    touches.pushMap(touch);
  }

  return touches;
}