Rename all the things

sky/sdk/lib/framework/painting/box_painter.dart

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'dart:math' as math;
-import 'dart:sky' as sky;
-import 'dart:sky' show Point, Size, Rect, Color, Paint, Path;
-import 'shadows.dart';
-
-class BorderSide {
-  const BorderSide({
-    this.color: const Color(0xFF000000),
-    this.width: 1.0
-  });
-  final Color color;
-  final double width;
-
-  static const none = const BorderSide(width: 0.0);
-
-  int get hashCode {
-    int value = 373;
-    value = 37 * value * color.hashCode;
-    value = 37 * value * width.hashCode;
-    return value;
-  }
-  String toString() => 'BorderSide($color, $width)';
-}
-
-class Border {
-  const Border({
-    this.top: BorderSide.none,
-    this.right: BorderSide.none,
-    this.bottom: BorderSide.none,
-    this.left: BorderSide.none
-  });
-
-  const Border.all(BorderSide side) :
-    top = side,
-    right = side,
-    bottom = side,
-    left = side;
-
-  final BorderSide top;
-  final BorderSide right;
-  final BorderSide bottom;
-  final BorderSide left;
-
-  int get hashCode {
-    int value = 373;
-    value = 37 * value * top.hashCode;
-    value = 37 * value * right.hashCode;
-    value = 37 * value * bottom.hashCode;
-    value = 37 * value * left.hashCode;
-    return value;
-  }
-  String toString() => 'Border($top, $right, $bottom, $left)';
-}
-
-class BoxShadow {
-  const BoxShadow({
-    this.color,
-    this.offset,
-    this.blur
-  });
-
-  final Color color;
-  final Size offset;
-  final double blur;
-
-  String toString() => 'BoxShadow($color, $offset, $blur)';
-}
-
-abstract class Gradient {
-  sky.Shader createShader();
-}
-
-class LinearGradient extends Gradient {
-  LinearGradient({
-    this.endPoints,
-    this.colors,
-    this.colorStops,
-    this.tileMode: sky.TileMode.clamp
-  });
-
-  String toString() =>
-      'LinearGradient($endPoints, $colors, $colorStops, $tileMode)';
-
-  sky.Shader createShader() {
-    return new sky.Gradient.linear(this.endPoints, this.colors, this.colorStops,
-                                   this.tileMode);
-  }
-
-  final List<Point> endPoints;
-  final List<Color> colors;
-  final List<double> colorStops;
-  final sky.TileMode tileMode;
-}
-
-class RadialGradient extends Gradient {
-  RadialGradient({
-    this.center,
-    this.radius,
-    this.colors,
-    this.colorStops,
-    this.tileMode: sky.TileMode.clamp
-  });
-
-  String toString() =>
-      'RadialGradient($center, $radius, $colors, $colorStops, $tileMode)';
-
-  sky.Shader createShader() {
-    return new sky.Gradient.radial(this.center, this.radius, this.colors,
-                                   this.colorStops, this.tileMode);
-  }
-
-  final Point center;
-  final double radius;
-  final List<Color> colors;
-  final List<double> colorStops;
-  final sky.TileMode tileMode;
-}
-
-enum Shape { rectangle, circle }
-
-// This must be immutable, because we won't notice when it changes
-class BoxDecoration {
-  const BoxDecoration({
-    this.backgroundColor, // null = don't draw background
-    this.border, // null = don't draw border
-    this.borderRadius, // null = use more efficient background drawing; note that this must be null for circles
-    this.boxShadow, // null = don't draw shadows
-    this.gradient, // null = don't allocate gradient objects
-    this.shape: Shape.rectangle
-  });
-
-  final Color backgroundColor;
-  final double borderRadius;
-  final Border border;
-  final List<BoxShadow> boxShadow;
-  final Gradient gradient;
-  final Shape shape;
-
-  String toString([String prefix = '']) {
-    List<String> result = [];
-    if (backgroundColor != null)
-      result.add('${prefix}backgroundColor: $backgroundColor');
-    if (border != null)
-      result.add('${prefix}border: $border');
-    if (borderRadius != null)
-      result.add('${prefix}borderRadius: $borderRadius');
-    if (boxShadow != null)
-      result.add('${prefix}boxShadow: ${boxShadow.map((shadow) => shadow.toString())}');
-    if (gradient != null)
-      result.add('${prefix}gradient: $gradient');
-    if (shape != Shape.rectangle)
-      result.add('${prefix}shape: $shape');
-    if (result.isEmpty)
-      return '${prefix}<no decorations specified>';
-    return result.join('\n');
-  }
-}
-
-class BoxPainter {
-  BoxPainter(BoxDecoration decoration) : _decoration = decoration {
-    assert(decoration != null);
-  }
-
-  BoxDecoration _decoration;
-  BoxDecoration get decoration => _decoration;
-  void set decoration (BoxDecoration value) {
-    assert(value != null);
-    if (value == _decoration)
-      return;
-    _decoration = value;
-    _cachedBackgroundPaint = null;
-  }
-
-  Paint _cachedBackgroundPaint;
-  Paint get _backgroundPaint {
-    if (_cachedBackgroundPaint == null) {
-      Paint paint = new Paint();
-
-      if (_decoration.backgroundColor != null)
-        paint.color = _decoration.backgroundColor;
-
-      if (_decoration.boxShadow != null) {
-        var builder = new ShadowDrawLooperBuilder();
-        for (BoxShadow boxShadow in _decoration.boxShadow)
-          builder.addShadow(boxShadow.offset, boxShadow.color, boxShadow.blur);
-        paint.setDrawLooper(builder.build());
-      }
-
-      if (_decoration.gradient != null)
-        paint.setShader(_decoration.gradient.createShader());
-
-      _cachedBackgroundPaint = paint;
-    }
-
-    return _cachedBackgroundPaint;
-  }
-
-  void paint(sky.Canvas canvas, Rect rect) {
-    if (_decoration.backgroundColor != null || _decoration.boxShadow != null ||
-        _decoration.gradient != null) {
-      switch (_decoration.shape) {
-        case Shape.circle:
-          assert(_decoration.borderRadius == null);
-          Point center = rect.center;
-          Size size = rect.size;
-          double radius = math.min(size.width, size.height) / 2.0;
-          canvas.drawCircle(center.x, center.y, radius, _backgroundPaint);
-          break;
-        case Shape.rectangle:
-          if (_decoration.borderRadius == null)
-            canvas.drawRect(rect, _backgroundPaint);
-          else
-            canvas.drawRRect(new sky.RRect()..setRectXY(rect, _decoration.borderRadius, _decoration.borderRadius), _backgroundPaint);
-          break;
-      }
-    }
-
-    if (_decoration.border != null) {
-      assert(_decoration.borderRadius == null); // TODO(abarth): Implement borders with border radius.
-      assert(_decoration.shape == Shape.rectangle); // TODO(ianh): Implement borders on circles.
-
-      assert(_decoration.border.top != null);
-      assert(_decoration.border.right != null);
-      assert(_decoration.border.bottom != null);
-      assert(_decoration.border.left != null);
-
-      Paint paint = new Paint();
-      Path path;
-
-      paint.color = _decoration.border.top.color;
-      path = new Path();
-      path.moveTo(rect.left, rect.top);
-      path.lineTo(rect.left + _decoration.border.left.width, rect.top + _decoration.border.top.width);
-      path.lineTo(rect.right - _decoration.border.right.width, rect.top + _decoration.border.top.width);
-      path.lineTo(rect.right, rect.top);
-      path.close();
-      canvas.drawPath(path, paint);
-
-      paint.color = _decoration.border.right.color;
-      path = new Path();
-      path.moveTo(rect.right, rect.top);
-      path.lineTo(rect.right - _decoration.border.right.width, rect.top + _decoration.border.top.width);
-      path.lineTo(rect.right - _decoration.border.right.width, rect.bottom - _decoration.border.bottom.width);
-      path.lineTo(rect.right, rect.bottom);
-      path.close();
-      canvas.drawPath(path, paint);
-
-      paint.color = _decoration.border.bottom.color;
-      path = new Path();
-      path.moveTo(rect.right, rect.bottom);
-      path.lineTo(rect.right - _decoration.border.right.width, rect.bottom - _decoration.border.bottom.width);
-      path.lineTo(rect.left + _decoration.border.left.width, rect.bottom - _decoration.border.bottom.width);
-      path.lineTo(rect.left, rect.bottom);
-      path.close();
-      canvas.drawPath(path, paint);
-
-      paint.color = _decoration.border.left.color;
-      path = new Path();
-      path.moveTo(rect.left, rect.bottom);
-      path.lineTo(rect.left + _decoration.border.left.width, rect.bottom - _decoration.border.bottom.width);
-      path.lineTo(rect.left + _decoration.border.left.width, rect.top + _decoration.border.top.width);
-      path.lineTo(rect.left, rect.top);
-      path.close();
-      canvas.drawPath(path, paint);
-    }
-  }
-}