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FlutterOverlayView.mm
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #import "flutter/shell/platform/darwin/ios/framework/Source/FlutterOverlayView.h"
6
7 #include <CoreGraphics/CGColorSpace.h>
8
9 #import "flutter/shell/platform/darwin/ios/framework/Source/FlutterView.h"
10 #include "fml/platform/darwin/cf_utils.h"
11
12 FLUTTER_ASSERT_ARC
13
14 // This is mostly a duplication of FlutterView.
15 @implementation FlutterOverlayView {
16 fml::CFRef<CGColorSpaceRef> _colorSpaceRef;
17 }
18
19 - (instancetype)initWithFrame:(CGRect)frame {
20 NSAssert(NO, @"FlutterOverlayView must init or initWithContentsScale");
21 return nil;
22 }
23
24 - (instancetype)initWithCoder:(NSCoder*)aDecoder {
25 NSAssert(NO, @"FlutterOverlayView must init or initWithContentsScale");
26 return nil;
27 }
28
29 - (instancetype)init {
30 self = [super initWithFrame:CGRectZero];
31
32 if (self) {
33 self.layer.opaque = NO;
34 self.userInteractionEnabled = NO;
35 self.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);
36 }
37
38 return self;
39 }
40
41 - (instancetype)initWithContentsScale:(CGFloat)contentsScale
42 pixelFormat:(MTLPixelFormat)pixelFormat {
43 self = [self init];
44
45 if ([self.layer isKindOfClass:[CAMetalLayer class]]) {
46 self.layer.allowsGroupOpacity = NO;
47 self.layer.contentsScale = contentsScale;
48 self.layer.rasterizationScale = contentsScale;
49 #pragma clang diagnostic push
50 #pragma clang diagnostic ignored "-Wunguarded-availability-new"
51 CAMetalLayer* layer = (CAMetalLayer*)self.layer;
52 #pragma clang diagnostic pop
53 layer.pixelFormat = pixelFormat;
54 if (pixelFormat == MTLPixelFormatRGBA16Float || pixelFormat == MTLPixelFormatBGRA10_XR) {
55 self->_colorSpaceRef = fml::CFRef(CGColorSpaceCreateWithName(kCGColorSpaceExtendedSRGB));
56 layer.colorspace = self->_colorSpaceRef;
57 }
58 }
59 return self;
60 }
61
62 + (Class)layerClass {
63 return [FlutterView layerClass];
64 }
65
66 // TODO(amirh): implement drawLayer to support snapshotting.
67
68 @end
FlutterOverlayView.h
initWithFrame
instancetype initWithFrame
Definition: FlutterTextInputPlugin.h:179
initWithCoder
instancetype initWithCoder
Definition: FlutterTextInputPlugin.h:178
FlutterView.h
FlutterOverlayView
Definition: FlutterOverlayView.h:23
FlutterView
Definition: FlutterView.h:33
FLUTTER_ASSERT_ARC
Definition: FlutterChannelKeyResponder.mm:13