Initial commit

.flowconfig

+[ignore]
+; We fork some components by platform
+.*/*[.]android.js
+
+; Ignore templates for 'react-native init'
+<PROJECT_ROOT>/template/.*
+
+; Ignore the Dangerfile
+<PROJECT_ROOT>/bots/dangerfile.js
+
+; Ignore "BUCK" generated dirs
+<PROJECT_ROOT>/\.buckd/
+
+; These should not be required directly
+; require from fbjs/lib instead: require('fbjs/lib/warning')
+.*/node_modules/warning/.*
+
+; Flow doesn't support platforms
+.*/Libraries/Utilities/LoadingView.js
+
+[untyped]
+.*/node_modules/@react-native-community/cli/.*/.*
+
+[include]
+
+[declarations]
+.*/node_modules/.*
+
+[libs]
+interface.js
+flow/
+
+[options]
+emoji=true
+
+esproposal.optional_chaining=enable
+esproposal.nullish_coalescing=enable
+
+exact_by_default=true
+
+module.file_ext=.js
+module.file_ext=.json
+module.file_ext=.ios.js
+
+munge_underscores=true
+
+module.name_mapper='proxy_http_version 1.1;react-native$' -> '<PROJECT_ROOT>/index.js'
+module.name_mapper='proxy_http_version 1.1;react-native/\(.*\)$' -> '<PROJECT_ROOT>/\1'
+module.name_mapper='proxy_http_version 1.1;@?[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\)$' -> '<PROJECT_ROOT>/Libraries/Image/RelativeImageStub'
+
+suppress_type=$FlowIssue
+suppress_type=$FlowFixMe
+suppress_type=$FlowFixMeProps
+suppress_type=$FlowFixMeState
+suppress_type=$FlowFixMeEmpty
+
+suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[proxy_http_version 1.1;(]\\|(\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native\\(_ios\\)?_\\(oss\\|fb\\)[a-z,_]*\\)?)\\)
+suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native\\(_ios\\)?_\\(oss\\|fb\\)[a-z,_]*\\)?)\\)?:? #[0-9]+
+suppress_comment=\\(.\\|\n\\)*\\$FlowExpectedError
+
+experimental.well_formed_exports=true
+experimental.types_first=true
+experimental.abstract_locations=true
+
+[lints]
+sketchy-null-number=warn
+sketchy-null-mixed=warn
+sketchy-number=warn
+untyped-type-import=warn
+nonstrict-import=warn
+deprecated-type=warn
+unsafe-getters-setters=warn
+unnecessary-invariant=warn
+signature-verification-failure=warn
+deprecated-utility=error
+unsafe-addition=error
+
+[strict]
+deprecated-type
+nonstrict-import
+sketchy-null
+unclear-type
+unsafe-getters-setters
+untyped-import
+untyped-type-import
+
+[version]
+proxy_http_version 1.1;0.122.0

LICENSE

+MIT License
+
+Copyright (c) Facebook, Inc. and its affiliates.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Libraries/.npmignore

+__tests__

Libraries/ART/ARTCGFloatArray.h

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+// A little helper to make sure we have the right memory allocation ready for use.
+// We assume that we will only this in one place so no reference counting is necessary.
+// Needs to be freed when deallocated.
+
+// This is fragile since this relies on these values not getting reused. Consider
+// wrapping these in an Obj-C class or some ARC hackery to get refcounting.
+
+typedef struct {
+  size_t count;
+  CGFloat *array;
+} ARTCGFloatArray;

Libraries/ART/ARTContainer.h

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <Foundation/Foundation.h>
+
+@protocol ARTContainer <NSObject>
+
+// This is used as a hook for child to mark it's parent as dirty.
+// This bubbles up to the root which gets marked as dirty.
+- (void)invalidate;
+
+@end

Libraries/ART/ARTGroup.h

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "ARTContainer.h"
+#import "ARTNode.h"
+
+@interface ARTGroup : ARTNode <ARTContainer>
+
+@property (nonatomic, assign) CGRect clipping;
+
+@end

Libraries/ART/ARTGroup.m

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <React/ARTGroup.h>
+
+@implementation ARTGroup
+
+- (void)renderLayerTo:(CGContextRef)context
+{
+
+  if (!CGRectIsEmpty(self.clipping)) {
+    CGContextClipToRect(context, self.clipping);
+  }
+
+  for (ARTNode *node in self.subviews) {
+    [node renderTo:context];
+  }
+}
+
+@end

Libraries/ART/ARTNode.h

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <React/UIView+React.h>
+
+/**
+ * ART nodes are implemented as empty UIViews but this is just an implementation detail to fit
+ * into the existing view management. They should also be shadow views and painted on a background
+ * thread.
+ */
+
+@interface ARTNode : UIView
+
+@property (nonatomic, assign) CGFloat opacity;
+
+- (void)invalidate;
+- (void)renderTo:(CGContextRef)context;
+
+/**
+ * renderTo will take opacity into account and draw renderLayerTo off-screen if there is opacity
+ * specified, then composite that onto the context. renderLayerTo always draws at opacity=1.
+ * @abstract
+ */
+- (void)renderLayerTo:(CGContextRef)context;
+
+@end

Libraries/ART/ARTNode.m

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <React/ARTNode.h>
+
+#import <React/ARTContainer.h>
+
+@implementation ARTNode
+
+- (void)insertReactSubview:(UIView *)subview atIndex:(NSInteger)atIndex
+{
+  [super insertReactSubview:subview atIndex:atIndex];
+  [self insertSubview:subview atIndex:atIndex];
+  [self invalidate];
+}
+
+- (void)removeReactSubview:(UIView *)subview
+{
+  [super removeReactSubview:subview];
+  [self invalidate];
+}
+
+- (void)didUpdateReactSubviews
+{
+  // Do nothing, as subviews are inserted by insertReactSubview:
+}
+
+- (void)setOpacity:(CGFloat)opacity
+{
+  [self invalidate];
+  _opacity = opacity;
+}
+
+- (void)setTransform:(CGAffineTransform)transform
+{
+  [self invalidate];
+  super.transform = transform;
+}
+
+- (void)invalidate
+{
+  id<ARTContainer> container = (id<ARTContainer>)self.superview;
+  [container invalidate];
+}
+
+- (void)renderTo:(CGContextRef)context
+{
+  if (self.opacity <= 0) {
+    // Nothing to paint
+    return;
+  }
+  if (self.opacity >= 1) {
+    // Just paint at full opacity
+    CGContextSaveGState(context);
+    CGContextConcatCTM(context, self.transform);
+    CGContextSetAlpha(context, 1);
+    [self renderLayerTo:context];
+    CGContextRestoreGState(context);
+    return;
+  }
+  // This needs to be painted on a layer before being composited.
+  CGContextSaveGState(context);
+  CGContextConcatCTM(context, self.transform);
+  CGContextSetAlpha(context, self.opacity);
+  CGContextBeginTransparencyLayer(context, NULL);
+  [self renderLayerTo:context];
+  CGContextEndTransparencyLayer(context);
+  CGContextRestoreGState(context);
+}
+
+- (void)renderLayerTo:(CGContextRef)context
+{
+  // abstract
+}
+
+@end

Libraries/ART/ARTRenderable.h

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "ARTBrush.h"
+#import "ARTCGFloatArray.h"
+#import "ARTNode.h"
+
+@interface ARTRenderable : ARTNode
+
+@property (nonatomic, strong) ARTBrush *fill;
+@property (nonatomic, assign) CGColorRef stroke;
+@property (nonatomic, assign) CGFloat strokeWidth;
+@property (nonatomic, assign) CGLineCap strokeCap;
+@property (nonatomic, assign) CGLineJoin strokeJoin;
+@property (nonatomic, assign) ARTCGFloatArray strokeDash;
+
+@end

Libraries/ART/ARTRenderable.m

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <React/ARTRenderable.h>
+
+@implementation ARTRenderable
+
+- (void)setFill:(ARTBrush *)fill
+{
+  [self invalidate];
+  _fill = fill;
+}
+
+- (void)setStroke:(CGColorRef)stroke
+{
+  if (stroke == _stroke) {
+    return;
+  }
+  [self invalidate];
+  CGColorRelease(_stroke);
+  _stroke = CGColorRetain(stroke);
+}
+
+- (void)setStrokeWidth:(CGFloat)strokeWidth
+{
+  [self invalidate];
+  _strokeWidth = strokeWidth;
+}
+
+- (void)setStrokeCap:(CGLineCap)strokeCap
+{
+  [self invalidate];
+  _strokeCap = strokeCap;
+}
+
+- (void)setStrokeJoin:(CGLineJoin)strokeJoin
+{
+  [self invalidate];
+  _strokeJoin = strokeJoin;
+}
+
+- (void)setStrokeDash:(ARTCGFloatArray)strokeDash
+{
+  if (strokeDash.array == _strokeDash.array) {
+    return;
+  }
+  if (_strokeDash.array) {
+    free(_strokeDash.array);
+  }
+  [self invalidate];
+  _strokeDash = strokeDash;
+}
+
+- (void)dealloc
+{
+  CGColorRelease(_stroke);
+  if (_strokeDash.array) {
+    free(_strokeDash.array);
+  }
+}
+
+- (void)renderTo:(CGContextRef)context
+{
+  if (self.opacity <= 0 || self.opacity >= 1 || (self.fill && self.stroke)) {
+    // If we have both fill and stroke, we will need to paint this using normal compositing
+    [super renderTo: context];
+    return;
+  }
+  // This is a terminal with only one painting. Therefore we don't need to paint this
+  // off-screen. We can just composite it straight onto the buffer.
+  CGContextSaveGState(context);
+  CGContextConcatCTM(context, self.transform);
+  CGContextSetAlpha(context, self.opacity);
+  [self renderLayerTo:context];
+  CGContextRestoreGState(context);
+}
+
+- (void)renderLayerTo:(CGContextRef)context
+{
+  // abstract
+}
+
+@end

Libraries/ART/ARTShape.h

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "ARTRenderable.h"
+
+@interface ARTShape : ARTRenderable
+
+@property (nonatomic, assign) CGPathRef d;
+
+@end

Libraries/ART/ARTShape.m

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <React/ARTShape.h>
+
+@implementation ARTShape
+
+- (void)setD:(CGPathRef)d
+{
+  if (d == _d) {
+    return;
+  }
+  [self invalidate];
+  CGPathRelease(_d);
+  _d = CGPathRetain(d);
+}
+
+- (void)dealloc
+{
+  CGPathRelease(_d);
+}
+
+- (void)renderLayerTo:(CGContextRef)context
+{
+  if ((!self.fill && !self.stroke) || !self.d) {
+    return;
+  }
+
+  CGPathDrawingMode mode = kCGPathStroke;
+  if (self.fill) {
+    if ([self.fill applyFillColor:context]) {
+      mode = kCGPathFill;
+    } else {
+      CGContextSaveGState(context);
+      CGContextAddPath(context, self.d);
+      CGContextClip(context);
+      [self.fill paint:context];
+      CGContextRestoreGState(context);
+      if (!self.stroke) {
+        return;
+      }
+    }
+  }
+  if (self.stroke) {
+    CGContextSetStrokeColorWithColor(context, self.stroke);
+    CGContextSetLineWidth(context, self.strokeWidth);
+    CGContextSetLineCap(context, self.strokeCap);
+    CGContextSetLineJoin(context, self.strokeJoin);
+    ARTCGFloatArray dash = self.strokeDash;
+    if (dash.count) {
+      CGContextSetLineDash(context, 0, dash.array, dash.count);
+    }
+    if (mode == kCGPathFill) {
+      mode = kCGPathFillStroke;
+    }
+  }
+
+  CGContextAddPath(context, self.d);
+  CGContextDrawPath(context, mode);
+}
+
+@end

Libraries/ART/ARTSurfaceView.h

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <UIKit/UIKit.h>
+
+#import "ARTContainer.h"
+
+@interface ARTSurfaceView : UIView <ARTContainer>
+
+@end

Libraries/ART/ARTSurfaceView.m

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <React/ARTSurfaceView.h>
+
+#import <React/RCTLog.h>
+
+#import <React/ARTNode.h>
+
+@implementation ARTSurfaceView
+
+- (instancetype)initWithFrame:(CGRect)frame
+{
+  if (self = [super initWithFrame:frame]) {
+    self.opaque = NO;
+  }
+
+  return self;
+}
+
+- (void)insertReactSubview:(UIView *)subview atIndex:(NSInteger)atIndex
+{
+  [super insertReactSubview:subview atIndex:atIndex];
+  [self insertSubview:subview atIndex:atIndex];
+  [self invalidate];
+}
+
+- (void)removeReactSubview:(UIView *)subview
+{
+  [super removeReactSubview:subview];
+  [self invalidate];
+}
+
+- (void)didUpdateReactSubviews
+{
+  // Do nothing, as subviews are inserted by insertReactSubview:
+}
+
+- (void)invalidate
+{
+  [self setNeedsDisplay];
+}
+
+- (void)drawRect:(CGRect)rect
+{
+  [super drawRect:rect];
+  CGContextRef context = UIGraphicsGetCurrentContext();
+  for (ARTNode *node in self.subviews) {
+    [node renderTo:context];
+  }
+}
+
+@end

Libraries/ART/ARTText.h

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "ARTRenderable.h"
+#import "ARTTextFrame.h"
+
+@interface ARTText : ARTRenderable
+
+@property (nonatomic, assign) CTTextAlignment alignment;
+@property (nonatomic, assign) ARTTextFrame textFrame;
+
+@end

Libraries/ART/ARTText.m

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <React/ARTText.h>
+
+#import <CoreText/CoreText.h>
+
+@implementation ARTText
+
+- (void)setAlignment:(CTTextAlignment)alignment
+{
+  [self invalidate];
+  _alignment = alignment;
+}
+
+static void ARTFreeTextFrame(ARTTextFrame frame)
+{
+  if (frame.count) {
+    // We must release each line before freeing up this struct
+    for (int i = 0; i < frame.count; i++) {
+      CFRelease(frame.lines[i]);
+    }
+    free(frame.lines);
+    free(frame.widths);
+  }
+}
+
+- (void)setTextFrame:(ARTTextFrame)frame
+{
+  if (frame.lines != _textFrame.lines) {
+    ARTFreeTextFrame(_textFrame);
+  }
+  [self invalidate];
+  _textFrame = frame;
+}
+
+- (void)dealloc
+{
+  ARTFreeTextFrame(_textFrame);
+}
+
+- (void)renderLayerTo:(CGContextRef)context
+{
+  ARTTextFrame frame = self.textFrame;
+
+  if ((!self.fill && !self.stroke) || !frame.count) {
+    return;
+  }
+
+  // to-do: draw along a path
+
+  CGTextDrawingMode mode = kCGTextStroke;
+  if (self.fill) {
+    if ([self.fill applyFillColor:context]) {
+      mode = kCGTextFill;
+    } else {
+
+      for (int i = 0; i < frame.count; i++) {
+        CGContextSaveGState(context);
+        // Inverse the coordinate space since CoreText assumes a bottom-up coordinate space
+        CGContextScaleCTM(context, 1.0, -1.0);
+        CGContextSetTextDrawingMode(context, kCGTextClip);
+        [self renderLineTo:context atIndex:i];
+        // Inverse the coordinate space back to the original before filling
+        CGContextScaleCTM(context, 1.0, -1.0);
+        [self.fill paint:context];
+        // Restore the state so that the next line can be clipped separately
+        CGContextRestoreGState(context);
+      }
+
+      if (!self.stroke) {
+        return;
+      }
+    }
+  }
+  if (self.stroke) {
+    CGContextSetStrokeColorWithColor(context, self.stroke);
+    CGContextSetLineWidth(context, self.strokeWidth);
+    CGContextSetLineCap(context, self.strokeCap);
+    CGContextSetLineJoin(context, self.strokeJoin);
+    ARTCGFloatArray dash = self.strokeDash;
+    if (dash.count) {
+      CGContextSetLineDash(context, 0, dash.array, dash.count);
+    }
+    if (mode == kCGTextFill) {
+      mode = kCGTextFillStroke;
+    }
+  }
+
+  CGContextSetTextDrawingMode(context, mode);
+
+  // Inverse the coordinate space since CoreText assumes a bottom-up coordinate space
+  CGContextScaleCTM(context, 1.0, -1.0);
+  for (int i = 0; i < frame.count; i++) {
+    [self renderLineTo:context atIndex:i];
+  }
+}
+
+- (void)renderLineTo:(CGContextRef)context atIndex:(int)index
+{
+  ARTTextFrame frame = self.textFrame;
+  CGFloat shift;
+  switch (self.alignment) {
+    case kCTTextAlignmentRight:
+      shift = frame.widths[index];
+      break;
+    case kCTTextAlignmentCenter:
+      shift = (frame.widths[index] / 2);
+      break;
+    default:
+      shift = 0;
+      break;
+  }
+  // We should consider snapping this shift to device pixels to improve rendering quality
+  // when a line has subpixel width.
+  CGContextSetTextPosition(context, -shift, -frame.baseLine - frame.lineHeight * index);
+  CTLineRef line = frame.lines[index];
+  CTLineDraw(line, context);
+}
+
+@end

Libraries/ART/ARTTextFrame.h

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <CoreText/CoreText.h>
+
+// A little helper to make sure we have a set of lines including width ready for use.
+// We assume that we will only this in one place so no reference counting is necessary.
+// Needs to be freed when deallocated.
+
+// This is fragile since this relies on these values not getting reused. Consider
+// wrapping these in an Obj-C class or some ARC hackery to get refcounting.
+
+typedef struct {
+  size_t count;
+  CGFloat baseLine; // Distance from the origin to the base line of the first line
+  CGFloat lineHeight; // Distance between lines
+  CTLineRef *lines;
+  CGFloat *widths; // Width of each line
+} ARTTextFrame;

Libraries/ART/Brushes/ARTBrush.h

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <CoreGraphics/CoreGraphics.h>
+#import <Foundation/Foundation.h>
+
+@interface ARTBrush : NSObject
+
+/* @abstract */
+- (instancetype)initWithArray:(NSArray *)data NS_DESIGNATED_INITIALIZER;
+
+/**
+ * For certain brushes we can fast path a combined fill and stroke.
+ * For those brushes we override applyFillColor which sets the fill
+ * color to be used by those batch paints. Those return YES.
+ * We can't batch gradient painting in CoreGraphics, so those will
+ * return NO and paint gets called instead.
+ * @abstract
+ */
+- (BOOL)applyFillColor:(CGContextRef)context;
+
+/**
+ * paint fills the context with a brush. The context is assumed to
+ * be clipped.
+ * @abstract
+ */
+- (void)paint:(CGContextRef)context;
+
+@end

Libraries/ART/Brushes/ARTBrush.m

+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <React/ARTBrush.h>
+
+#import <React/RCTDefines.h>
+
+@implementation ARTBrush
+
+- (instancetype)initWithArray:(NSArray *)data
+{
+  return [super init];
+}
+
+RCT_NOT_IMPLEMENTED(- (instancetype)init)
+
+- (BOOL)applyFillColor:(CGContextRef)context
+{
+  return NO;
+}
+
+- (void)paint:(CGContextRef)context
+{
+  // abstract
+}
+
+@end