diff options
Diffstat (limited to 'source/3rd-party/SDL2/src/video/wayland/SDL_waylanddatamanager.c')
| -rw-r--r-- | source/3rd-party/SDL2/src/video/wayland/SDL_waylanddatamanager.c | 468 |
1 files changed, 468 insertions, 0 deletions
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddatamanager.c b/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddatamanager.c new file mode 100644 index 0000000..f1b9742 --- /dev/null +++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddatamanager.c @@ -0,0 +1,468 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +#include "../../SDL_internal.h" + +#if SDL_VIDEO_DRIVER_WAYLAND + +#include <fcntl.h> +#include <unistd.h> +#include <limits.h> +#include <signal.h> + +#include "SDL_stdinc.h" +#include "SDL_assert.h" +#include "../../core/unix/SDL_poll.h" + +#include "SDL_waylandvideo.h" +#include "SDL_waylanddatamanager.h" + +#include "SDL_waylanddyn.h" + +static ssize_t +write_pipe(int fd, const void* buffer, size_t total_length, size_t *pos) +{ + int ready = 0; + ssize_t bytes_written = 0; + ssize_t length = total_length - *pos; + + sigset_t sig_set; + sigset_t old_sig_set; + struct timespec zerotime = {0}; + + ready = SDL_IOReady(fd, SDL_TRUE, 1 * 1000); + + sigemptyset(&sig_set); + sigaddset(&sig_set, SIGPIPE); + + pthread_sigmask(SIG_BLOCK, &sig_set, &old_sig_set); + + if (ready == 0) { + bytes_written = SDL_SetError("Pipe timeout"); + } else if (ready < 0) { + bytes_written = SDL_SetError("Pipe select error"); + } else { + if (length > 0) { + bytes_written = write(fd, (Uint8*)buffer + *pos, SDL_min(length, PIPE_BUF)); + } + + if (bytes_written > 0) { + *pos += bytes_written; + } + } + + sigtimedwait(&sig_set, 0, &zerotime); + pthread_sigmask(SIG_SETMASK, &old_sig_set, NULL); + + return bytes_written; +} + +static ssize_t +read_pipe(int fd, void** buffer, size_t* total_length, SDL_bool null_terminate) +{ + int ready = 0; + void* output_buffer = NULL; + char temp[PIPE_BUF]; + size_t new_buffer_length = 0; + ssize_t bytes_read = 0; + size_t pos = 0; + + ready = SDL_IOReady(fd, SDL_FALSE, 1 * 1000); + + if (ready == 0) { + bytes_read = SDL_SetError("Pipe timeout"); + } else if (ready < 0) { + bytes_read = SDL_SetError("Pipe select error"); + } else { + bytes_read = read(fd, temp, sizeof(temp)); + } + + if (bytes_read > 0) { + pos = *total_length; + *total_length += bytes_read; + + if (null_terminate == SDL_TRUE) { + new_buffer_length = *total_length + 1; + } else { + new_buffer_length = *total_length; + } + + if (*buffer == NULL) { + output_buffer = SDL_malloc(new_buffer_length); + } else { + output_buffer = SDL_realloc(*buffer, new_buffer_length); + } + + if (output_buffer == NULL) { + bytes_read = SDL_OutOfMemory(); + } else { + SDL_memcpy((Uint8*)output_buffer + pos, temp, bytes_read); + + if (null_terminate == SDL_TRUE) { + SDL_memset((Uint8*)output_buffer + (new_buffer_length - 1), 0, 1); + } + + *buffer = output_buffer; + } + } + + return bytes_read; +} + +#define MIME_LIST_SIZE 4 + +static const char* mime_conversion_list[MIME_LIST_SIZE][2] = { + {"text/plain", TEXT_MIME}, + {"TEXT", TEXT_MIME}, + {"UTF8_STRING", TEXT_MIME}, + {"STRING", TEXT_MIME} +}; + +const char* +Wayland_convert_mime_type(const char *mime_type) +{ + const char *found = mime_type; + + size_t index = 0; + + for (index = 0; index < MIME_LIST_SIZE; ++index) { + if (strcmp(mime_conversion_list[index][0], mime_type) == 0) { + found = mime_conversion_list[index][1]; + break; + } + } + + return found; +} + +static SDL_MimeDataList* +mime_data_list_find(struct wl_list* list, + const char* mime_type) +{ + SDL_MimeDataList *found = NULL; + + SDL_MimeDataList *mime_list = NULL; + wl_list_for_each(mime_list, list, link) { + if (strcmp(mime_list->mime_type, mime_type) == 0) { + found = mime_list; + break; + } + } + return found; +} + +static int +mime_data_list_add(struct wl_list* list, + const char* mime_type, + void* buffer, size_t length) +{ + int status = 0; + size_t mime_type_length = 0; + + SDL_MimeDataList *mime_data = NULL; + + mime_data = mime_data_list_find(list, mime_type); + + if (mime_data == NULL) { + mime_data = SDL_calloc(1, sizeof(*mime_data)); + if (mime_data == NULL) { + status = SDL_OutOfMemory(); + } else { + WAYLAND_wl_list_insert(list, &(mime_data->link)); + + mime_type_length = strlen(mime_type) + 1; + mime_data->mime_type = SDL_malloc(mime_type_length); + if (mime_data->mime_type == NULL) { + status = SDL_OutOfMemory(); + } else { + SDL_memcpy(mime_data->mime_type, mime_type, mime_type_length); + } + } + } + + if (mime_data != NULL && buffer != NULL && length > 0) { + if (mime_data->data != NULL) { + SDL_free(mime_data->data); + } + mime_data->data = buffer; + mime_data->length = length; + } + + return status; +} + +static void +mime_data_list_free(struct wl_list *list) +{ + SDL_MimeDataList *mime_data = NULL; + SDL_MimeDataList *next = NULL; + + wl_list_for_each_safe(mime_data, next, list, link) { + if (mime_data->data != NULL) { + SDL_free(mime_data->data); + } + if (mime_data->mime_type != NULL) { + SDL_free(mime_data->mime_type); + } + SDL_free(mime_data); + } +} + +ssize_t +Wayland_data_source_send(SDL_WaylandDataSource *source, + const char *mime_type, int fd) +{ + size_t written_bytes = 0; + ssize_t status = 0; + SDL_MimeDataList *mime_data = NULL; + + mime_type = Wayland_convert_mime_type(mime_type); + mime_data = mime_data_list_find(&source->mimes, + mime_type); + + if (mime_data == NULL || mime_data->data == NULL) { + status = SDL_SetError("Invalid mime type"); + close(fd); + } else { + while (write_pipe(fd, mime_data->data, mime_data->length, + &written_bytes) > 0); + close(fd); + status = written_bytes; + } + return status; +} + +int Wayland_data_source_add_data(SDL_WaylandDataSource *source, + const char *mime_type, + const void *buffer, + size_t length) +{ + int status = 0; + if (length > 0) { + void *internal_buffer = SDL_malloc(length); + if (internal_buffer == NULL) { + status = SDL_OutOfMemory(); + } else { + SDL_memcpy(internal_buffer, buffer, length); + status = mime_data_list_add(&source->mimes, mime_type, + internal_buffer, length); + } + } + return status; +} + +SDL_bool +Wayland_data_source_has_mime(SDL_WaylandDataSource *source, + const char *mime_type) +{ + SDL_bool found = SDL_FALSE; + + if (source != NULL) { + found = mime_data_list_find(&source->mimes, mime_type) != NULL; + } + return found; +} + +void* +Wayland_data_source_get_data(SDL_WaylandDataSource *source, + size_t *length, const char* mime_type, + SDL_bool null_terminate) +{ + SDL_MimeDataList *mime_data = NULL; + void *buffer = NULL; + *length = 0; + + if (source == NULL) { + SDL_SetError("Invalid data source"); + } else { + mime_data = mime_data_list_find(&source->mimes, mime_type); + if (mime_data != NULL && mime_data->length > 0) { + buffer = SDL_malloc(mime_data->length); + if (buffer == NULL) { + *length = SDL_OutOfMemory(); + } else { + *length = mime_data->length; + SDL_memcpy(buffer, mime_data->data, mime_data->length); + } + } + } + + return buffer; +} + +void +Wayland_data_source_destroy(SDL_WaylandDataSource *source) +{ + if (source != NULL) { + wl_data_source_destroy(source->source); + mime_data_list_free(&source->mimes); + SDL_free(source); + } +} + +void* +Wayland_data_offer_receive(SDL_WaylandDataOffer *offer, + size_t *length, const char* mime_type, + SDL_bool null_terminate) +{ + SDL_WaylandDataDevice *data_device = NULL; + + int pipefd[2]; + void *buffer = NULL; + *length = 0; + + if (offer == NULL) { + SDL_SetError("Invalid data offer"); + } else if ((data_device = offer->data_device) == NULL) { + SDL_SetError("Data device not initialized"); + } else if (pipe2(pipefd, O_CLOEXEC|O_NONBLOCK) == -1) { + SDL_SetError("Could not read pipe"); + } else { + wl_data_offer_receive(offer->offer, mime_type, pipefd[1]); + + /* TODO: Needs pump and flush? */ + WAYLAND_wl_display_flush(data_device->video_data->display); + + close(pipefd[1]); + + while (read_pipe(pipefd[0], &buffer, length, null_terminate) > 0); + close(pipefd[0]); + } + return buffer; +} + +int +Wayland_data_offer_add_mime(SDL_WaylandDataOffer *offer, + const char* mime_type) +{ + return mime_data_list_add(&offer->mimes, mime_type, NULL, 0); +} + + +SDL_bool +Wayland_data_offer_has_mime(SDL_WaylandDataOffer *offer, + const char *mime_type) +{ + SDL_bool found = SDL_FALSE; + + if (offer != NULL) { + found = mime_data_list_find(&offer->mimes, mime_type) != NULL; + } + return found; +} + +void +Wayland_data_offer_destroy(SDL_WaylandDataOffer *offer) +{ + if (offer != NULL) { + wl_data_offer_destroy(offer->offer); + mime_data_list_free(&offer->mimes); + SDL_free(offer); + } +} + +int +Wayland_data_device_clear_selection(SDL_WaylandDataDevice *data_device) +{ + int status = 0; + + if (data_device == NULL || data_device->data_device == NULL) { + status = SDL_SetError("Invalid Data Device"); + } else if (data_device->selection_source != 0) { + wl_data_device_set_selection(data_device->data_device, NULL, 0); + data_device->selection_source = NULL; + } + return status; +} + +int +Wayland_data_device_set_selection(SDL_WaylandDataDevice *data_device, + SDL_WaylandDataSource *source) +{ + int status = 0; + size_t num_offers = 0; + size_t index = 0; + + if (data_device == NULL) { + status = SDL_SetError("Invalid Data Device"); + } else if (source == NULL) { + status = SDL_SetError("Invalid source"); + } else { + SDL_MimeDataList *mime_data = NULL; + + wl_list_for_each(mime_data, &(source->mimes), link) { + wl_data_source_offer(source->source, + mime_data->mime_type); + + /* TODO - Improve system for multiple mime types to same data */ + for (index = 0; index < MIME_LIST_SIZE; ++index) { + if (strcmp(mime_conversion_list[index][1], mime_data->mime_type) == 0) { + wl_data_source_offer(source->source, + mime_conversion_list[index][0]); + } + } + /* */ + + ++num_offers; + } + + if (num_offers == 0) { + Wayland_data_device_clear_selection(data_device); + status = SDL_SetError("No mime data"); + } else { + /* Only set if there is a valid serial if not set it later */ + if (data_device->selection_serial != 0) { + wl_data_device_set_selection(data_device->data_device, + source->source, + data_device->selection_serial); + } + data_device->selection_source = source; + } + } + + return status; +} + +int +Wayland_data_device_set_serial(SDL_WaylandDataDevice *data_device, + uint32_t serial) +{ + int status = -1; + if (data_device != NULL) { + status = 0; + + /* If there was no serial and there is a pending selection set it now. */ + if (data_device->selection_serial == 0 + && data_device->selection_source != NULL) { + wl_data_device_set_selection(data_device->data_device, + data_device->selection_source->source, + serial); + } + + data_device->selection_serial = serial; + } + + return status; +} + +#endif /* SDL_VIDEO_DRIVER_WAYLAND */ + +/* vi: set ts=4 sw=4 expandtab: */ |