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1 // Copyright 2016 The Chromium 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 "ui/views/cocoa/drag_drop_client_mac.h" | |
6 | |
7 #include "base/mac/mac_util.h" | |
8 #include "base/run_loop.h" | |
9 #include "base/strings/sys_string_conversions.h" | |
10 #import "ui/base/dragdrop/os_exchange_data_provider_mac.h" | |
11 #include "ui/gfx/image/image_skia_util_mac.h" | |
12 #include "ui/views/drag_utils.h" | |
13 #import "ui/views/cocoa/bridged_content_view.h" | |
14 #import "ui/views/cocoa/bridged_native_widget.h" | |
15 #include "ui/views/widget/native_widget_mac.h" | |
16 | |
17 @interface CocoaDragDropDataProvider () | |
18 - (id)initWithData:(const ui::OSExchangeData&)data; | |
19 - (id)initWithPasteboard:(NSPasteboard*)pasteboard; | |
20 @end | |
21 | |
22 @implementation CocoaDragDropDataProvider | |
23 | |
24 std::unique_ptr<ui::OSExchangeData> data_; | |
Scott Hess - ex-Googler
2016/06/05 20:11:51
Dollars to donuts this is responsible for the wate
tapted
2016/06/05 23:37:35
Ah doh - it just needs curlies around it. I'll sub
| |
25 | |
26 - (id)initWithData:(const ui::OSExchangeData&)data { | |
27 if ((self = [super init])) { | |
28 data_.reset(new OSExchangeData(data.provider().Clone())); | |
29 } | |
30 return self; | |
31 } | |
32 | |
33 - (id)initWithPasteboard:(NSPasteboard*)pasteboard { | |
34 if ((self = [super init])) { | |
35 data_ = ui::OSExchangeDataProviderMac::CreateDataFromPasteboard(pasteboard); | |
36 } | |
37 return self; | |
38 } | |
39 | |
40 - (ui::OSExchangeData*)data { | |
41 return data_.get(); | |
42 } | |
43 | |
44 // NSPasteboardItemDataProvider protocol implementation. | |
45 | |
46 - (void)pasteboard:(NSPasteboard*)sender | |
47 item:(NSPasteboardItem*)item | |
48 provideDataForType:(NSString*)type { | |
49 const ui::OSExchangeDataProviderMac& provider = | |
50 static_cast<const ui::OSExchangeDataProviderMac&>(data_->provider()); | |
51 NSData* ns_data = provider.GetNSDataForType(type); | |
52 [sender setData:ns_data forType:type]; | |
53 } | |
54 | |
55 @end | |
56 | |
57 namespace views { | |
58 | |
59 DragDropClientMac::DragDropClientMac(BridgedNativeWidget* bridge, | |
60 View* root_view) | |
61 : drop_helper_(root_view), | |
62 operation_(0), | |
63 bridge_(bridge), | |
64 quit_closure_(base::Closure()) { | |
65 DCHECK(bridge); | |
66 } | |
67 | |
68 DragDropClientMac::~DragDropClientMac() {} | |
69 | |
70 void DragDropClientMac::StartDragAndDrop( | |
71 View* view, | |
72 const ui::OSExchangeData& data, | |
73 int operation, | |
74 ui::DragDropTypes::DragEventSource source) { | |
75 data_source_.reset([[CocoaDragDropDataProvider alloc] initWithData:data]); | |
76 operation_ = operation; | |
77 | |
78 const ui::OSExchangeDataProviderMac& provider = | |
79 static_cast<const ui::OSExchangeDataProviderMac&>(data.provider()); | |
80 | |
81 // Synthesize an event for dragging, since we can't be sure that | |
82 // [NSApp currentEvent] will return a valid dragging event. | |
83 NSWindow* window = bridge_->ns_window(); | |
84 NSPoint position = [window mouseLocationOutsideOfEventStream]; | |
85 NSTimeInterval event_time = [[NSApp currentEvent] timestamp]; | |
86 NSEvent* event = [NSEvent mouseEventWithType:NSLeftMouseDragged | |
87 location:position | |
88 modifierFlags:NSLeftMouseDraggedMask | |
89 timestamp:event_time | |
90 windowNumber:[window windowNumber] | |
91 context:nil | |
92 eventNumber:0 | |
93 clickCount:1 | |
94 pressure:1.0]; | |
95 | |
96 NSImage* image = gfx::NSImageFromImageSkiaWithColorSpace( | |
97 provider.GetDragImage(), base::mac::GetSRGBColorSpace()); | |
98 | |
99 base::scoped_nsobject<NSPasteboardItem> item([[NSPasteboardItem alloc] init]); | |
100 [item setDataProvider:data_source_.get() | |
101 forTypes:ui::OSExchangeDataProviderMac:: | |
102 SupportedPasteboardTypes()]; | |
103 | |
104 base::scoped_nsobject<NSDraggingItem> drag_item( | |
105 [[NSDraggingItem alloc] initWithPasteboardWriter:item.get()]); | |
106 | |
107 // Subtract the image's height from the y location so that the mouse will be | |
108 // at the upper left corner of the image. | |
109 NSRect dragging_frame = | |
110 NSMakeRect([event locationInWindow].x, | |
111 [event locationInWindow].y - [image size].height, | |
112 [image size].width, [image size].height); | |
113 [drag_item setDraggingFrame:dragging_frame contents:image]; | |
114 | |
115 [bridge_->ns_view() beginDraggingSessionWithItems:@[ drag_item.get() ] | |
116 event:event | |
117 source:bridge_->ns_view()]; | |
118 | |
119 // Since Drag and drop is asynchronous on Mac, we need to spin a nested run | |
120 // loop for consistency with other platforms. | |
121 base::RunLoop run_loop; | |
122 quit_closure_ = run_loop.QuitClosure(); | |
123 run_loop.Run(); | |
124 } | |
125 | |
126 NSDragOperation DragDropClientMac::DragUpdate(id<NSDraggingInfo> sender) { | |
127 int drag_operation = ui::DragDropTypes::DRAG_NONE; | |
128 | |
129 // Since dragging from non MacView sources does not generate OSExchangeData, | |
130 // we need to generate one based on the provided pasteboard. | |
131 if (!data_source_.get()) { | |
132 data_source_.reset([[CocoaDragDropDataProvider alloc] | |
133 initWithPasteboard:[sender draggingPasteboard]]); | |
134 } | |
135 | |
136 drag_operation = drop_helper_.OnDragOver( | |
137 *[data_source_ data], LocationInView([sender draggingLocation]), | |
138 operation_); | |
139 return ui::DragDropTypes::DragOperationToNSDragOperation(drag_operation); | |
140 } | |
141 | |
142 NSDragOperation DragDropClientMac::Drop(id<NSDraggingInfo> sender) { | |
143 int drag_operation = drop_helper_.OnDrop( | |
144 *[data_source_ data], LocationInView([sender draggingLocation]), | |
145 operation_); | |
146 return ui::DragDropTypes::DragOperationToNSDragOperation(drag_operation); | |
147 } | |
148 | |
149 void DragDropClientMac::EndDrag() { | |
150 data_source_.reset(); | |
151 | |
152 // Allow a test to invoke EndDrag() without spinning the nested run loop. | |
153 if (!quit_closure_.is_null()) { | |
154 quit_closure_.Run(); | |
155 quit_closure_.Reset(); | |
156 } | |
157 } | |
158 | |
159 gfx::Point DragDropClientMac::LocationInView(NSPoint point) const { | |
160 return gfx::Point(point.x, NSHeight([bridge_->ns_window() frame]) - point.y); | |
161 } | |
162 | |
163 } // namespace views | |
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