1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/Badge.h>
#include <LibCore/EventLoop.h>
#include <LibCore/MimeData.h>
#include <LibGUI/DragOperation.h>
#include <LibGUI/WindowServerConnection.h>
#include <LibGfx/Bitmap.h>
namespace GUI {
static DragOperation* s_current_drag_operation;
DragOperation::DragOperation(Core::Object* parent)
: Core::Object(parent)
{
}
DragOperation::~DragOperation()
{
}
DragOperation::Outcome DragOperation::exec()
{
VERIFY(!s_current_drag_operation);
VERIFY(!m_event_loop);
VERIFY(m_mime_data);
Gfx::ShareableBitmap drag_bitmap;
if (m_mime_data->has_format("image/x-raw-bitmap")) {
auto data = m_mime_data->data("image/x-raw-bitmap");
auto bitmap = Gfx::Bitmap::create_from_serialized_byte_buffer(move(data));
drag_bitmap = bitmap->to_shareable_bitmap();
}
auto response = WindowServerConnection::the().send_sync<Messages::WindowServer::StartDrag>(
m_mime_data->text(),
m_mime_data->all_data(),
drag_bitmap);
if (!response->started()) {
m_outcome = Outcome::Cancelled;
return m_outcome;
}
s_current_drag_operation = this;
m_event_loop = make<Core::EventLoop>();
auto result = m_event_loop->exec();
m_event_loop = nullptr;
dbgln("{}: event loop returned with result {}", class_name(), result);
remove_from_parent();
s_current_drag_operation = nullptr;
return m_outcome;
}
void DragOperation::done(Outcome outcome)
{
VERIFY(m_outcome == Outcome::None);
m_outcome = outcome;
m_event_loop->quit(0);
}
void DragOperation::notify_accepted(Badge<WindowServerConnection>)
{
VERIFY(s_current_drag_operation);
s_current_drag_operation->done(Outcome::Accepted);
}
void DragOperation::notify_cancelled(Badge<WindowServerConnection>)
{
if (s_current_drag_operation)
s_current_drag_operation->done(Outcome::Cancelled);
}
void DragOperation::set_text(const String& text)
{
if (!m_mime_data)
m_mime_data = Core::MimeData::construct();
m_mime_data->set_text(text);
}
void DragOperation::set_bitmap(const Gfx::Bitmap* bitmap)
{
if (!m_mime_data)
m_mime_data = Core::MimeData::construct();
if (bitmap)
m_mime_data->set_data("image/x-raw-bitmap", bitmap->serialize_to_byte_buffer());
}
void DragOperation::set_data(const String& data_type, const String& data)
{
if (!m_mime_data)
m_mime_data = Core::MimeData::construct();
m_mime_data->set_data(data_type, data.to_byte_buffer());
}
}
|
