Initial commit

fbshipit-source-id: e866918d6c62fc1cf3a04c269f782b94db9b875a

.buckconfig

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+[cxx]
+  gtest_dep = //lib/gtest:gtest

.buckversion

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+158950c02e1553d3a17979e74d9df020594e4d30

.gitignore

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+.DS_STORE
+
+/buck-cache/
+/buck-out/
+/.buckconfig.local
+/.buckd
+/lib/gtest/googletest-*/

.hgignore

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+.DS_STORE
+
+/buck-cache/
+/buck-out/
+/.buckconfig.local
+/.buckd
+/lib/gtest/googletest-*/

BUCK

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+# Copyright (c) 2014-present, Facebook, Inc.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree. An additional grant
+# of patent rights can be found in the PATENTS file in the same directory.
+
+include_defs('//CSSLAYOUT_DEFS')
+
+BASE_COMPILER_FLAGS = [
+  '-fno-omit-frame-pointer',
+  '-fexceptions',
+  '-Wall',
+  '-Werror',
+]
+
+GMOCK_OVERRIDE_FLAGS = [
+  # gmock does not mark mocked methods as override, ignore the warnings in tests
+  '-Wno-inconsistent-missing-override',
+]
+
+COMPILER_FLAGS = BASE_COMPILER_FLAGS + ['-std=c11']
+TEST_COMPILER_FLAGS = BASE_COMPILER_FLAGS + GMOCK_OVERRIDE_FLAGS + ['-std=c++11']
+
+cxx_library(
+  name = 'CSSLayout',
+  srcs = glob(['CSSLayout/*.c']),
+  tests=[':CSSLayout_tests'],
+  exported_headers = subdir_glob([('', 'CSSLayout/*.h')]),
+  header_namespace = '',
+  compiler_flags = COMPILER_FLAGS,
+  deps = [],
+  visibility = ['PUBLIC'],
+)
+
+cxx_library(
+  name = 'CSSLayoutTestUtils',
+  srcs = glob(['tests/CSSLayoutTestUtils/*.c']),
+  exported_headers = subdir_glob([('tests', 'CSSLayoutTestUtils/*.h')]),
+  header_namespace = '',
+  compiler_flags = COMPILER_FLAGS,
+  deps = [
+    ':CSSLayout',
+  ],
+  visibility = ['PUBLIC'],
+)
+
+cxx_test(
+  name = 'CSSLayout_tests',
+  contacts = ['emilsj@fb.com'],
+  srcs = glob(['tests/*.cpp']),
+  compiler_flags = TEST_COMPILER_FLAGS,
+  deps = [
+    ':CSSLayout',
+    ':CSSLayoutTestUtils',
+    GTEST_TARGET,
+  ],
+  visibility = ['PUBLIC'],
+)
+
+java_library(
+  name = 'CSSLayout_java',
+  srcs = glob(['java/**/*.java']),
+  tests=[':CSSLayout_java_tests'],
+  source = '1.7',
+  target = '1.7',
+  deps = [
+    INFER_ANNOTATIONS_TARGET,
+    JSR_305_TARGET,
+  ],
+  visibility = ['PUBLIC'],
+)
+
+java_test(
+  name = 'CSSLayout_java_tests',
+  srcs = glob(['tests/java/**/*.java']),
+  deps = [
+    ':CSSLayout_java',
+    JUNIT_TARGET,
+  ],
+)

CONTRIBUTING

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+# Contributing to css-layout
+We want to make contributing to this project as easy and transparent as
+possible.
+
+## Our Development Process
+All the development is happening on GitHub first and we have internal tools to sync down to Facebook codebase.
+
+## Pull Requests
+We actively welcome your pull requests.
+1. Fork the repo and create your branch from `master`.
+2. If you've added code that should be tested, add tests
+3. If you've changed APIs, update the documentation.
+4. Ensure the test suite passes.
+5. Make sure your code lints.
+6. If you haven't already, complete the Contributor License Agreement ("CLA").
+
+## Contributor License Agreement ("CLA")
+In order to accept your pull request, we need you to submit a CLA. You only need
+to do this once to work on any of Facebook's open source projects.
+
+Complete your CLA here: <https://code.facebook.com/cla>
+
+## Issues
+We use GitHub issues to track public bugs. Please ensure your description is
+clear and has sufficient instructions to be able to reproduce the issue.
+
+Facebook has a [bounty program](https://www.facebook.com/whitehat/) for the safe
+disclosure of security bugs. In those cases, please go through the process
+outlined on that page and do not file a public issue.
+
+## Coding Style
+* 2 spaces for indentation rather than tabs
+* 80 character line length
+* ...
+
+## License
+By contributing to css-layout, you agree that your contributions will be licensed
+under its BSD license.

CSSLAYOUT_DEFS

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+
+CSSLAYOUT_ROOT = '//...'
+INFER_ANNOTATIONS_TARGET = '//lib/infer-annotations:infer-annotations'
+JSR_305_TARGET = '//lib/jsr-305:jsr-305'
+JUNIT_TARGET = '//lib/junit:junit'
+GTEST_TARGET = '//lib/gtest:gtest'
+GTEST_DL_URL = 'https://github.com/google/googletest/archive/release-1.7.0.zip'

CSSLayout/CSSLayout-internal.h

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+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#ifndef __CSS_LAYOUT_INTERNAL_H
+#define __CSS_LAYOUT_INTERNAL_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "CSSLayout.h"
+#include "CSSNodeList.h"
+
+CSS_EXTERN_C_BEGIN
+
+typedef struct CSSCachedMeasurement {
+  float availableWidth;
+  float availableHeight;
+  CSSMeasureMode widthMeasureMode;
+  CSSMeasureMode heightMeasureMode;
+
+  float computedWidth;
+  float computedHeight;
+} CSSCachedMeasurement;
+
+// This value was chosen based on empiracle data. Even the most complicated
+// layouts should not require more than 16 entries to fit within the cache.
+enum {
+  CSS_MAX_CACHED_RESULT_COUNT = 16
+};
+
+typedef struct CSSLayout {
+  float position[4];
+  float dimensions[2];
+  CSSDirection direction;
+
+  float flexBasis;
+
+  // Instead of recomputing the entire layout every single time, we
+  // cache some information to break early when nothing changed
+  int generationCount;
+  CSSDirection lastParentDirection;
+
+  int nextCachedMeasurementsIndex;
+  CSSCachedMeasurement cachedMeasurements[CSS_MAX_CACHED_RESULT_COUNT];
+  float measuredDimensions[2];
+
+  CSSCachedMeasurement cached_layout;
+} CSSLayout;
+
+typedef struct CSSStyle {
+  CSSDirection direction;
+  CSSFlexDirection flexDirection;
+  CSSJustify justifyContent;
+  CSSAlign alignContent;
+  CSSAlign alignItems;
+  CSSAlign alignSelf;
+  CSSPositionType positionType;
+  CSSWrapType flexWrap;
+  CSSOverflow overflow;
+  float flex;
+  float margin[6];
+  float position[4];
+  /**
+   * You should skip all the rules that contain negative values for the
+   * following attributes. For example:
+   *   {padding: 10, paddingLeft: -5}
+   * should output:
+   *   {left: 10 ...}
+   * the following two are incorrect:
+   *   {left: -5 ...}
+   *   {left: 0 ...}
+   */
+  float padding[6];
+  float border[6];
+  float dimensions[2];
+  float minDimensions[2];
+  float maxDimensions[2];
+} CSSStyle;
+
+typedef struct CSSNode {
+  CSSStyle style;
+  CSSLayout layout;
+  int lineIndex;
+  bool shouldUpdate;
+  bool isTextNode;
+  CSSNodeRef parent;
+  CSSNodeListRef children;
+  bool isDirty;
+
+  struct CSSNode* nextChild;
+
+  CSSSize (*measure)(void *context, float width, CSSMeasureMode widthMode, float height, CSSMeasureMode heightMode);
+  void (*print)(void *context);
+  void *context;
+} CSSNode;
+
+CSS_EXTERN_C_END
+
+#endif