| blob | 7c85aef6dae3f158a02074d743377e5c5bdd3806 |
1 /*\r
2 ==============================================================================\r
3 \r
4 This file is part of the JUCE library.\r
5 Copyright (c) 2022 - Raw Material Software Limited\r
6 \r
7 JUCE is an open source library subject to commercial or open-source\r
8 licensing.\r
9 \r
10 By using JUCE, you agree to the terms of both the JUCE 7 End-User License\r
11 Agreement and JUCE Privacy Policy.\r
12 \r
13 End User License Agreement: www.juce.com/juce-7-licence\r
14 Privacy Policy: www.juce.com/juce-privacy-policy\r
15 \r
16 Or: You may also use this code under the terms of the GPL v3 (see\r
17 www.gnu.org/licenses).\r
18 \r
19 JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER\r
20 EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE\r
21 DISCLAIMED.\r
22 \r
23 ==============================================================================\r
24 */\r
25 \r
26 namespace juce\r
27 {\r
28 \r
29 class NSViewAttachment : public ReferenceCountedObject,\r
30 public ComponentMovementWatcher\r
31 {\r
32 public:\r
33 NSViewAttachment (NSView* v, Component& comp)\r
34 : ComponentMovementWatcher (&comp),\r
35 view (v), owner (comp),\r
36 currentPeer (nullptr)\r
37 {\r
38 [view retain];\r
39 [view setPostsFrameChangedNotifications: YES];\r
40 updateAlpha();\r
41 \r
42 if (owner.isShowing())\r
43 componentPeerChanged();\r
44 }\r
45 \r
46 ~NSViewAttachment() override\r
47 {\r
48 removeFromParent();\r
49 [view release];\r
50 }\r
51 \r
52 void componentMovedOrResized (Component& comp, bool wasMoved, bool wasResized) override\r
53 {\r
54 ComponentMovementWatcher::componentMovedOrResized (comp, wasMoved, wasResized);\r
55 \r
56 // The ComponentMovementWatcher version of this method avoids calling\r
57 // us when the top-level comp is resized, but if we're listening to the\r
58 // top-level comp we still want the NSView to track its size.\r
59 if (comp.isOnDesktop() && wasResized)\r
60 componentMovedOrResized (wasMoved, wasResized);\r
61 }\r
62 \r
63 void componentMovedOrResized (bool /*wasMoved*/, bool /*wasResized*/) override\r
64 {\r
65 if (auto* peer = owner.getTopLevelComponent()->getPeer())\r
66 {\r
67 const auto newArea = peer->getAreaCoveredBy (owner);\r
68 \r
69 if (convertToRectInt ([view frame]) != newArea)\r
70 [view setFrame: makeNSRect (newArea)];\r
71 }\r
72 }\r
73 \r
74 void componentPeerChanged() override\r
75 {\r
76 auto* peer = owner.getPeer();\r
77 \r
78 if (currentPeer != peer)\r
79 {\r
80 currentPeer = peer;\r
81 \r
82 if (peer != nullptr)\r
83 {\r
84 auto peerView = (NSView*) peer->getNativeHandle();\r
85 [peerView addSubview: view];\r
86 componentMovedOrResized (false, false);\r
87 }\r
88 else\r
89 {\r
90 removeFromParent();\r
91 }\r
92 }\r
93 \r
94 [view setHidden: ! owner.isShowing()];\r
95 }\r
96 \r
97 void componentVisibilityChanged() override\r
98 {\r
99 componentPeerChanged();\r
100 }\r
101 \r
102 void updateAlpha()\r
103 {\r
104 [view setAlphaValue: (CGFloat) owner.getAlpha()];\r
105 }\r
106 \r
107 NSView* const view;\r
108 \r
109 using Ptr = ReferenceCountedObjectPtr<NSViewAttachment>;\r
110 \r
111 private:\r
112 Component& owner;\r
113 ComponentPeer* currentPeer;\r
114 NSViewFrameWatcher frameWatcher { view, [this] { owner.childBoundsChanged (nullptr); } };\r
115 \r
116 void removeFromParent()\r
117 {\r
118 if ([view superview] != nil)\r
119 [view removeFromSuperview]; // Must be careful not to call this unless it's required - e.g. some Apple AU views\r
120 // override the call and use it as a sign that they're being deleted, which breaks everything..\r
121 }\r
122 \r
123 JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (NSViewAttachment)\r
124 };\r
125 \r
126 //==============================================================================\r
127 NSViewComponent::NSViewComponent() = default;\r
128 NSViewComponent::~NSViewComponent() = default;\r
129 \r
130 void NSViewComponent::setView (void* view)\r
131 {\r
132 if (view != getView())\r
133 {\r
134 auto old = attachment;\r
135 \r
136 attachment = nullptr;\r
137 \r
138 if (view != nullptr)\r
139 attachment = attachViewToComponent (*this, view);\r
140 \r
141 old = nullptr;\r
142 }\r
143 }\r
144 \r
145 void* NSViewComponent::getView() const\r
146 {\r
147 return attachment != nullptr ? static_cast<NSViewAttachment*> (attachment.get())->view\r
148 : nullptr;\r
149 }\r
150 \r
151 void NSViewComponent::resizeToFitView()\r
152 {\r
153 if (attachment != nullptr)\r
154 {\r
155 auto* view = static_cast<NSViewAttachment*> (attachment.get())->view;\r
156 auto r = [view frame];\r
157 setBounds (Rectangle<int> ((int) r.size.width, (int) r.size.height));\r
158 \r
159 if (auto* peer = getTopLevelComponent()->getPeer())\r
160 {\r
161 const auto position = peer->getAreaCoveredBy (*this).getPosition();\r
162 [view setFrameOrigin: convertToCGPoint (position)];\r
163 }\r
164 }\r
165 }\r
166 \r
167 void NSViewComponent::paint (Graphics&) {}\r
168 \r
169 void NSViewComponent::alphaChanged()\r
170 {\r
171 if (attachment != nullptr)\r
172 (static_cast<NSViewAttachment*> (attachment.get()))->updateAlpha();\r
173 }\r
174 \r
175 ReferenceCountedObject* NSViewComponent::attachViewToComponent (Component& comp, void* view)\r
176 {\r
177 return new NSViewAttachment ((NSView*) view, comp);\r
178 }\r
179 \r
180 } // namespace juce\r