1 // Copyright (c) 2011 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 #include "chrome/browser/ui/gtk/custom_drag.h"
6
7 #include "base/utf_string_conversions.h"
8 #include "chrome/browser/download/download_item.h"
9 #include "chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.h"
10 #include "googleurl/src/gurl.h"
11 #include "net/base/net_util.h"
12 #include "third_party/skia/include/core/SkBitmap.h"
13 #include "ui/base/dragdrop/gtk_dnd_util.h"
14 #include "ui/gfx/gtk_util.h"
15 #include "ui/gfx/image.h"
16
17 namespace {
18
19 const int kDownloadItemCodeMask = ui::TEXT_URI_LIST | ui::CHROME_NAMED_URL;
20 const GdkDragAction kDownloadItemDragAction = GDK_ACTION_COPY;
21 const GdkDragAction kBookmarkDragAction =
22 static_cast<GdkDragAction>(GDK_ACTION_COPY | GDK_ACTION_MOVE);
23
OnDragDataGetForDownloadItem(GtkSelectionData * selection_data,guint target_type,const DownloadItem * download_item)24 void OnDragDataGetForDownloadItem(GtkSelectionData* selection_data,
25 guint target_type,
26 const DownloadItem* download_item) {
27 GURL url = net::FilePathToFileURL(download_item->full_path());
28 ui::WriteURLWithName(selection_data, url,
29 UTF8ToUTF16(download_item->GetFileNameToReportUser().value()),
30 target_type);
31 }
32
OnDragDataGetStandalone(GtkWidget * widget,GdkDragContext * context,GtkSelectionData * selection_data,guint target_type,guint time,const DownloadItem * item)33 void OnDragDataGetStandalone(GtkWidget* widget, GdkDragContext* context,
34 GtkSelectionData* selection_data,
35 guint target_type, guint time,
36 const DownloadItem* item) {
37 OnDragDataGetForDownloadItem(selection_data, target_type, item);
38 }
39
40 } // namespace
41
42 // CustomDrag ------------------------------------------------------------------
43
CustomDrag(gfx::Image * icon,int code_mask,GdkDragAction action)44 CustomDrag::CustomDrag(gfx::Image* icon, int code_mask, GdkDragAction action)
45 : drag_widget_(gtk_invisible_new()),
46 image_(icon) {
47 g_signal_connect(drag_widget_, "drag-data-get",
48 G_CALLBACK(OnDragDataGetThunk), this);
49 g_signal_connect(drag_widget_, "drag-begin",
50 G_CALLBACK(OnDragBeginThunk), this);
51 g_signal_connect(drag_widget_, "drag-end",
52 G_CALLBACK(OnDragEndThunk), this);
53
54 GtkTargetList* list = ui::GetTargetListFromCodeMask(code_mask);
55 GdkEvent* event = gtk_get_current_event();
56 gtk_drag_begin(drag_widget_, list, action, 1, event);
57 if (event)
58 gdk_event_free(event);
59 gtk_target_list_unref(list);
60 }
61
~CustomDrag()62 CustomDrag::~CustomDrag() {
63 gtk_widget_destroy(drag_widget_);
64 }
65
OnDragBegin(GtkWidget * widget,GdkDragContext * drag_context)66 void CustomDrag::OnDragBegin(GtkWidget* widget, GdkDragContext* drag_context) {
67 if (image_)
68 gtk_drag_set_icon_pixbuf(drag_context, *image_, 0, 0);
69 }
70
OnDragEnd(GtkWidget * widget,GdkDragContext * drag_context)71 void CustomDrag::OnDragEnd(GtkWidget* widget, GdkDragContext* drag_context) {
72 delete this;
73 }
74
75 // DownloadItemDrag ------------------------------------------------------------
76
DownloadItemDrag(const DownloadItem * item,gfx::Image * icon)77 DownloadItemDrag::DownloadItemDrag(const DownloadItem* item,
78 gfx::Image* icon)
79 : CustomDrag(icon, kDownloadItemCodeMask, kDownloadItemDragAction),
80 download_item_(item) {
81 }
82
~DownloadItemDrag()83 DownloadItemDrag::~DownloadItemDrag() {
84 }
85
OnDragDataGet(GtkWidget * widget,GdkDragContext * context,GtkSelectionData * selection_data,guint target_type,guint time)86 void DownloadItemDrag::OnDragDataGet(
87 GtkWidget* widget, GdkDragContext* context,
88 GtkSelectionData* selection_data,
89 guint target_type, guint time) {
90 OnDragDataGetForDownloadItem(selection_data, target_type, download_item_);
91 }
92
93 // static
SetSource(GtkWidget * widget,DownloadItem * item,gfx::Image * icon)94 void DownloadItemDrag::SetSource(GtkWidget* widget,
95 DownloadItem* item,
96 gfx::Image* icon) {
97 gtk_drag_source_set(widget, GDK_BUTTON1_MASK, NULL, 0,
98 kDownloadItemDragAction);
99 ui::SetSourceTargetListFromCodeMask(widget, kDownloadItemCodeMask);
100
101 // Disconnect previous signal handlers, if any.
102 g_signal_handlers_disconnect_by_func(
103 widget,
104 reinterpret_cast<gpointer>(OnDragDataGetStandalone),
105 item);
106 // Connect new signal handlers.
107 g_signal_connect(widget, "drag-data-get",
108 G_CALLBACK(OnDragDataGetStandalone), item);
109
110 if (icon)
111 gtk_drag_source_set_icon_pixbuf(widget, *icon);
112 }
113
114 // static
BeginDrag(const DownloadItem * item,gfx::Image * icon)115 void DownloadItemDrag::BeginDrag(const DownloadItem* item, gfx::Image* icon) {
116 new DownloadItemDrag(item, icon);
117 }
118
119 // BookmarkDrag ----------------------------------------------------------------
120
BookmarkDrag(Profile * profile,const std::vector<const BookmarkNode * > & nodes)121 BookmarkDrag::BookmarkDrag(Profile* profile,
122 const std::vector<const BookmarkNode*>& nodes)
123 : CustomDrag(NULL,
124 bookmark_utils::GetCodeMask(false),
125 kBookmarkDragAction),
126 profile_(profile),
127 nodes_(nodes) {
128 }
129
~BookmarkDrag()130 BookmarkDrag::~BookmarkDrag() {
131 }
132
OnDragDataGet(GtkWidget * widget,GdkDragContext * context,GtkSelectionData * selection_data,guint target_type,guint time)133 void BookmarkDrag::OnDragDataGet(GtkWidget* widget, GdkDragContext* context,
134 GtkSelectionData* selection_data,
135 guint target_type, guint time) {
136 bookmark_utils::WriteBookmarksToSelection(nodes_, selection_data,
137 target_type, profile_);
138 }
139
140 // static
BeginDrag(Profile * profile,const std::vector<const BookmarkNode * > & nodes)141 void BookmarkDrag::BeginDrag(Profile* profile,
142 const std::vector<const BookmarkNode*>& nodes) {
143 new BookmarkDrag(profile, nodes);
144 }
145