jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * Copyright (c) 2022, the SerenityOS developers.
4 *
5 * SPDX-License-Identifier: BSD-2-Clause
6 */
7
8#include <AK/Badge.h>
9#include <LibCore/EventLoop.h>
10#include <LibCore/MimeData.h>
11#include <LibGUI/ConnectionToWindowServer.h>
12#include <LibGUI/DragOperation.h>
13#include <LibGfx/Bitmap.h>
14
15namespace GUI {
16
17static DragOperation* s_current_drag_operation;
18
19DragOperation::DragOperation(Core::Object* parent)
20 : Core::Object(parent)
21{
22}
23
24DragOperation::Outcome DragOperation::exec()
25{
26 VERIFY(!s_current_drag_operation);
27 VERIFY(!m_event_loop);
28 VERIFY(m_mime_data);
29
30 Gfx::ShareableBitmap drag_bitmap;
31 if (m_mime_data->has_format("image/x-raw-bitmap")) {
32 auto data = m_mime_data->data("image/x-raw-bitmap");
33 auto bitmap = Gfx::Bitmap::create_from_serialized_byte_buffer(move(data)).release_value_but_fixme_should_propagate_errors();
34 drag_bitmap = bitmap->to_shareable_bitmap();
35 }
36
37 auto started = ConnectionToWindowServer::the().start_drag(
38 m_mime_data->text(),
39 m_mime_data->all_data(),
40 drag_bitmap);
41
42 if (!started) {
43 m_outcome = Outcome::Cancelled;
44 return m_outcome;
45 }
46
47 s_current_drag_operation = this;
48 m_event_loop = make<Core::EventLoop>();
49 auto result = m_event_loop->exec();
50 m_event_loop = nullptr;
51 dbgln_if(DRAG_DEBUG, "{}: event loop returned with result {}", class_name(), result);
52 remove_from_parent();
53 s_current_drag_operation = nullptr;
54 return m_outcome;
55}
56
57void DragOperation::done(Outcome outcome)
58{
59 VERIFY(m_outcome == Outcome::None);
60 m_outcome = outcome;
61 m_event_loop->quit(0);
62}
63
64void DragOperation::notify_accepted(Badge<ConnectionToWindowServer>)
65{
66 VERIFY(s_current_drag_operation);
67 s_current_drag_operation->done(Outcome::Accepted);
68}
69
70void DragOperation::notify_cancelled(Badge<ConnectionToWindowServer>)
71{
72 if (s_current_drag_operation)
73 s_current_drag_operation->done(Outcome::Cancelled);
74}
75
76void DragOperation::set_text(DeprecatedString const& text)
77{
78 if (!m_mime_data)
79 m_mime_data = Core::MimeData::construct();
80 m_mime_data->set_text(text);
81}
82void DragOperation::set_bitmap(Gfx::Bitmap const* bitmap)
83{
84 if (!m_mime_data)
85 m_mime_data = Core::MimeData::construct();
86 if (bitmap)
87 m_mime_data->set_data("image/x-raw-bitmap", bitmap->serialize_to_byte_buffer().release_value_but_fixme_should_propagate_errors());
88}
89void DragOperation::set_data(DeprecatedString const& data_type, DeprecatedString const& data)
90{
91 if (!m_mime_data)
92 m_mime_data = Core::MimeData::construct();
93 m_mime_data->set_data(data_type, data.to_byte_buffer());
94}
95
96}