| Directory: | ./ |
|---|---|
| File: | server/data_device.cpp |
| Date: | 2024-01-22 17:25:27 |
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| Lines: | 91 | 98 | 92.9% |
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| 1 | /******************************************************************** | ||
| 2 | Copyright © 2020 Roman Gilg <subdiff@gmail.com> | ||
| 3 | |||
| 4 | This library is free software; you can redistribute it and/or | ||
| 5 | modify it under the terms of the GNU Lesser General Public | ||
| 6 | License as published by the Free Software Foundation; either | ||
| 7 | version 2.1 of the License, or (at your option) version 3, or any | ||
| 8 | later version accepted by the membership of KDE e.V. (or its | ||
| 9 | successor approved by the membership of KDE e.V.), which shall | ||
| 10 | act as a proxy defined in Section 6 of version 3 of the license. | ||
| 11 | |||
| 12 | This library is distributed in the hope that it will be useful, | ||
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | Lesser General Public License for more details. | ||
| 16 | |||
| 17 | You should have received a copy of the GNU Lesser General Public | ||
| 18 | License along with this library. If not, see <http://www.gnu.org/licenses/>. | ||
| 19 | *********************************************************************/ | ||
| 20 | #include "data_device.h" | ||
| 21 | |||
| 22 | #include "data_device_manager.h" | ||
| 23 | #include "data_offer_p.h" | ||
| 24 | #include "data_source.h" | ||
| 25 | #include "data_source_p.h" | ||
| 26 | #include "seat.h" | ||
| 27 | #include "selection_p.h" | ||
| 28 | #include "surface.h" | ||
| 29 | #include "surface_p.h" | ||
| 30 | |||
| 31 | #include "wayland/resource.h" | ||
| 32 | |||
| 33 | #include <wayland-server.h> | ||
| 34 | |||
| 35 | namespace Wrapland::Server | ||
| 36 | { | ||
| 37 | |||
| 38 | class data_device::Private : public Wayland::Resource<data_device> | ||
| 39 | { | ||
| 40 | public: | ||
| 41 | using source_res_t = Wrapland::Server::data_source_res; | ||
| 42 | |||
| 43 | Private(Client* client, uint32_t version, uint32_t id, Seat* seat, data_device* q_ptr); | ||
| 44 | ~Private() override; | ||
| 45 | |||
| 46 | data_offer* createDataOffer(data_source* source); | ||
| 47 | |||
| 48 | Seat* seat; | ||
| 49 | 32 | data_source* source = nullptr; | |
| 50 | 32 | Surface* surface = nullptr; | |
| 51 | 32 | Surface* icon = nullptr; | |
| 52 | |||
| 53 | 32 | data_source* selection = nullptr; | |
| 54 | QMetaObject::Connection selectionDestroyedConnection; | ||
| 55 | |||
| 56 | private: | ||
| 57 | static void startDragCallback(wl_client* wlClient, | ||
| 58 | wl_resource* wlResource, | ||
| 59 | wl_resource* wlSource, | ||
| 60 | wl_resource* wlOrigin, | ||
| 61 | wl_resource* wlIcon, | ||
| 62 | uint32_t serial); | ||
| 63 | static void set_selection_callback(wl_client* wlClient, | ||
| 64 | wl_resource* wlResource, | ||
| 65 | wl_resource* wlSource, | ||
| 66 | uint32_t id); | ||
| 67 | |||
| 68 | void startDrag(data_source* dataSource, Surface* origin, Surface* icon, quint32 serial) const; | ||
| 69 | |||
| 70 | static const struct wl_data_device_interface s_interface; | ||
| 71 | }; | ||
| 72 | |||
| 73 | const struct wl_data_device_interface data_device::Private::s_interface = { | ||
| 74 | startDragCallback, | ||
| 75 | set_selection_callback, | ||
| 76 | destroyCallback, | ||
| 77 | }; | ||
| 78 | |||
| 79 |
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64 | data_device::Private::Private(Client* client, |
| 80 | uint32_t version, | ||
| 81 | uint32_t id, | ||
| 82 | Seat* seat, | ||
| 83 | data_device* q_ptr) | ||
| 84 | 64 | : Wayland::Resource<data_device>(client, | |
| 85 | 32 | version, | |
| 86 | 32 | id, | |
| 87 | &wl_data_device_interface, | ||
| 88 | &s_interface, | ||
| 89 | 32 | q_ptr) | |
| 90 | 32 | , seat(seat) | |
| 91 | 32 | { | |
| 92 | 32 | } | |
| 93 | |||
| 94 | 64 | data_device::Private::~Private() = default; | |
| 95 | |||
| 96 | 13 | void data_device::Private::startDragCallback([[maybe_unused]] wl_client* wlClient, | |
| 97 | wl_resource* wlResource, | ||
| 98 | wl_resource* wlSource, | ||
| 99 | wl_resource* wlOrigin, | ||
| 100 | wl_resource* wlIcon, | ||
| 101 | uint32_t serial) | ||
| 102 | { | ||
| 103 | 13 | auto priv = get_handle(wlResource)->d_ptr; | |
| 104 |
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13 | auto source = wlSource ? Resource<data_source_res>::get_handle(wlSource)->src() : nullptr; |
| 105 | 13 | auto origin = Resource<Surface>::get_handle(wlOrigin); | |
| 106 |
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13 | auto icon = wlIcon ? Resource<Surface>::get_handle(wlIcon) : nullptr; |
| 107 | |||
| 108 | 13 | priv->startDrag(source, origin, icon, serial); | |
| 109 | 13 | } | |
| 110 | |||
| 111 | 13 | void data_device::Private::startDrag(data_source* dataSource, | |
| 112 | Surface* origin, | ||
| 113 | Surface* _icon, | ||
| 114 | quint32 serial) const | ||
| 115 | { | ||
| 116 | // TODO(unknown author): verify serial | ||
| 117 | |||
| 118 | 13 | auto pointerGrab = false; | |
| 119 |
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13 | if (seat->hasPointer()) { |
| 120 | 13 | auto& pointers = seat->pointers(); | |
| 121 |
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13 | pointerGrab = pointers.has_implicit_grab(serial) && pointers.get_focus().surface == origin; |
| 122 | 13 | } | |
| 123 | |||
| 124 |
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13 | if (!pointerGrab) { |
| 125 | // Client doesn't have pointer grab. | ||
| 126 |
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7 | if (!seat->hasTouch()) { |
| 127 | // Client has no pointer grab and no touch capability. | ||
| 128 | 6 | return; | |
| 129 | } | ||
| 130 | 1 | auto& touches = seat->touches(); | |
| 131 |
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1 | if (!touches.has_implicit_grab(serial) || touches.get_focus().surface != origin) { |
| 132 | // Client neither has pointer nor touch grab. No drag start allowed. | ||
| 133 | ✗ | return; | |
| 134 | } | ||
| 135 | 1 | } | |
| 136 | |||
| 137 | 7 | seat->drags().start(dataSource, origin, _icon, serial); | |
| 138 | 13 | } | |
| 139 | |||
| 140 | 18 | void data_device::Private::set_selection_callback(wl_client* /*wlClient*/, | |
| 141 | wl_resource* wlResource, | ||
| 142 | wl_resource* wlSource, | ||
| 143 | uint32_t /*id*/) | ||
| 144 | { | ||
| 145 | // TODO(unknown author): verify serial | ||
| 146 | 18 | auto handle = Resource::get_handle(wlResource); | |
| 147 |
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18 | auto source_res = wlSource ? Wayland::Resource<data_source_res>::get_handle(wlSource) : nullptr; |
| 148 | |||
| 149 | // TODO(romangg): move errors into Wayland namespace. | ||
| 150 |
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18 | if (source_res && source_res->src()->supported_dnd_actions() |
| 151 |
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14 | && wl_resource_get_version(wlSource) >= WL_DATA_SOURCE_ACTION_SINCE_VERSION) { |
| 152 | ✗ | wl_resource_post_error( | |
| 153 | ✗ | wlSource, WL_DATA_SOURCE_ERROR_INVALID_SOURCE, "Data source is for drag and drop"); | |
| 154 | ✗ | return; | |
| 155 | } | ||
| 156 | |||
| 157 | 18 | set_selection(handle, handle->d_ptr, wlSource); | |
| 158 | 18 | } | |
| 159 | |||
| 160 | 31 | data_offer* data_device::Private::createDataOffer(data_source* source) | |
| 161 | { | ||
| 162 |
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31 | if (!source) { |
| 163 | // A data offer can only exist together with a source. | ||
| 164 | 1 | return nullptr; | |
| 165 | } | ||
| 166 | |||
| 167 |
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30 | auto offer = new data_offer(client->handle, version, source); |
| 168 | |||
| 169 |
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30 | if (!offer->d_ptr->resource) { |
| 170 | // TODO(unknown author): send error? | ||
| 171 | ✗ | delete offer; | |
| 172 | ✗ | return nullptr; | |
| 173 | } | ||
| 174 | |||
| 175 | 30 | send<wl_data_device_send_data_offer>(offer->d_ptr->resource); | |
| 176 | 30 | offer->send_all_offers(); | |
| 177 | 30 | return offer; | |
| 178 | 31 | } | |
| 179 | |||
| 180 | 32 | data_device::data_device(Client* client, uint32_t version, uint32_t id, Seat* seat) | |
| 181 |
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32 | : d_ptr(new Private(client, version, id, seat, this)) |
| 182 | 32 | { | |
| 183 | 32 | } | |
| 184 | |||
| 185 | 2 | Seat* data_device::seat() const | |
| 186 | { | ||
| 187 | 2 | return d_ptr->seat; | |
| 188 | } | ||
| 189 | |||
| 190 | 30 | data_source* data_device::selection() const | |
| 191 | { | ||
| 192 | 30 | return d_ptr->selection; | |
| 193 | } | ||
| 194 | |||
| 195 | 32 | void data_device::send_selection(data_source* source) | |
| 196 | { | ||
| 197 |
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32 | if (!source) { |
| 198 | 9 | send_clear_selection(); | |
| 199 | 9 | return; | |
| 200 | } | ||
| 201 | |||
| 202 | 23 | auto offer = d_ptr->createDataOffer(source); | |
| 203 |
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23 | if (!offer) { |
| 204 | ✗ | return; | |
| 205 | } | ||
| 206 | |||
| 207 | 23 | d_ptr->send<wl_data_device_send_selection>(offer->d_ptr->resource); | |
| 208 | 32 | } | |
| 209 | |||
| 210 | 9 | void data_device::send_clear_selection() | |
| 211 | { | ||
| 212 | 9 | d_ptr->send<wl_data_device_send_selection>(nullptr); | |
| 213 | 9 | } | |
| 214 | |||
| 215 | 8 | data_offer* data_device::create_offer(data_source* source) | |
| 216 | { | ||
| 217 | 8 | return d_ptr->createDataOffer(source); | |
| 218 | } | ||
| 219 | |||
| 220 | 8 | void data_device::enter(uint32_t serial, Surface* surface, QPointF const& pos, data_offer* offer) | |
| 221 | { | ||
| 222 |
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8 | assert(surface); |
| 223 | 16 | d_ptr->send<wl_data_device_send_enter>(serial, | |
| 224 | 8 | surface->d_ptr->resource, | |
| 225 | 8 | wl_fixed_from_double(pos.x()), | |
| 226 | 8 | wl_fixed_from_double(pos.y()), | |
| 227 |
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8 | offer ? offer->d_ptr->resource : nullptr); |
| 228 | 8 | } | |
| 229 | |||
| 230 | 4 | void data_device::motion(uint32_t time, QPointF const& pos) | |
| 231 | { | ||
| 232 | 8 | d_ptr->send<wl_data_device_send_motion>( | |
| 233 | 4 | time, wl_fixed_from_double(pos.x()), wl_fixed_from_double(pos.y())); | |
| 234 | 4 | } | |
| 235 | |||
| 236 | 2 | void data_device::leave() | |
| 237 | { | ||
| 238 | 2 | d_ptr->send<wl_data_device_send_leave>(); | |
| 239 | 2 | } | |
| 240 | |||
| 241 | 3 | void data_device::drop() | |
| 242 | { | ||
| 243 | 3 | d_ptr->send<wl_data_device_send_drop>(); | |
| 244 | 3 | } | |
| 245 | |||
| 246 | 50 | Client* data_device::client() const | |
| 247 | { | ||
| 248 | 50 | return d_ptr->client->handle; | |
| 249 | } | ||
| 250 | |||
| 251 | } | ||
| 252 |