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weston/src/text-backend.c

442 lines
12 KiB

/*
* Copyright © 2012 Openismus GmbH
* Copyright © 2012 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdlib.h>
#include "compositor.h"
#include "text-server-protocol.h"
struct input_method;
struct input_method_context;
struct text_model {
struct wl_resource resource;
struct weston_compositor *ec;
struct wl_list input_methods;
struct wl_surface *surface;
};
struct text_model_factory {
struct wl_global *text_model_factory_global;
struct wl_listener destroy_listener;
struct weston_compositor *ec;
};
struct input_method {
struct wl_resource *input_method_binding;
struct wl_global *input_method_global;
struct wl_listener destroy_listener;
struct weston_seat *seat;
struct text_model *model;
struct wl_list link;
struct wl_listener keyboard_focus_listener;
int focus_listener_initialized;
struct input_method_context *context;
};
struct input_method_context {
struct wl_resource resource;
struct text_model *model;
struct wl_list link;
};
static void input_method_context_create(struct text_model *model,
struct input_method *input_method);
static void input_method_init_seat(struct weston_seat *seat);
static void
deactivate_text_model(struct text_model *text_model,
struct input_method *input_method)
{
struct weston_compositor *ec = text_model->ec;
if (input_method->model == text_model) {
if (input_method->input_method_binding)
input_method_send_deactivate(input_method->input_method_binding, &input_method->context->resource);
wl_list_remove(&input_method->link);
input_method->model = NULL;
input_method->context = NULL;
wl_signal_emit(&ec->hide_input_panel_signal, ec);
text_model_send_deactivated(&text_model->resource);
}
}
static void
destroy_text_model(struct wl_resource *resource)
{
struct text_model *text_model =
container_of(resource, struct text_model, resource);
struct input_method *input_method, *next;
wl_list_for_each_safe(input_method, next, &text_model->input_methods, link)
deactivate_text_model(text_model, input_method);
free(text_model);
}
static void
text_model_set_surrounding_text(struct wl_client *client,
struct wl_resource *resource,
const char *text,
uint32_t cursor,
uint32_t anchor)
{
struct text_model *text_model = resource->data;
struct input_method *input_method, *next;
wl_list_for_each_safe(input_method, next, &text_model->input_methods, link) {
if (!input_method->context)
continue;
input_method_context_send_surrounding_text(&input_method->context->resource,
text,
cursor,
anchor);
}
}
static void
text_model_activate(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *seat,
struct wl_resource *surface)
{
struct text_model *text_model = resource->data;
struct weston_seat *weston_seat = seat->data;
struct input_method *input_method = weston_seat->input_method;
struct text_model *old = weston_seat->input_method->model;
struct weston_compositor *ec = text_model->ec;
if (old == text_model)
return;
if (old) {
deactivate_text_model(old,
weston_seat->input_method);
}
input_method->model = text_model;
wl_list_insert(&text_model->input_methods, &input_method->link);
input_method_init_seat(weston_seat);
text_model->surface = surface->data;
input_method_context_create(text_model, input_method);
wl_signal_emit(&ec->show_input_panel_signal, ec);
text_model_send_activated(&text_model->resource);
}
static void
text_model_deactivate(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *seat)
{
struct text_model *text_model = resource->data;
struct weston_seat *weston_seat = seat->data;
deactivate_text_model(text_model,
weston_seat->input_method);
}
static void
text_model_set_micro_focus(struct wl_client *client,
struct wl_resource *resource,
int32_t x,
int32_t y,
int32_t width,
int32_t height)
{
}
static void
text_model_set_preedit(struct wl_client *client,
struct wl_resource *resource)
{
}
static void
text_model_set_content_type(struct wl_client *client,
struct wl_resource *resource)
{
}
static const struct text_model_interface text_model_implementation = {
text_model_set_surrounding_text,
text_model_activate,
text_model_deactivate,
text_model_set_micro_focus,
text_model_set_preedit,
text_model_set_content_type
};
static void text_model_factory_create_text_model(struct wl_client *client,
struct wl_resource *resource,
uint32_t id)
{
struct text_model_factory *text_model_factory = resource->data;
struct text_model *text_model;
text_model = calloc(1, sizeof *text_model);
text_model->resource.object.id = id;
text_model->resource.object.interface = &text_model_interface;
text_model->resource.object.implementation =
(void (**)(void)) &text_model_implementation;
text_model->resource.data = text_model;
text_model->resource.destroy = destroy_text_model;
text_model->ec = text_model_factory->ec;
wl_list_init(&text_model->input_methods);
wl_client_add_resource(client, &text_model->resource);
};
static const struct text_model_factory_interface text_model_factory_implementation = {
text_model_factory_create_text_model
};
static void
bind_text_model_factory(struct wl_client *client,
void *data,
uint32_t version,
uint32_t id)
{
struct text_model_factory *text_model_factory = data;
/* No checking for duplicate binding necessary.
* No events have to be sent, so we don't need the return value. */
wl_client_add_object(client, &text_model_factory_interface,
&text_model_factory_implementation,
id, text_model_factory);
}
static void
text_model_factory_notifier_destroy(struct wl_listener *listener, void *data)
{
struct text_model_factory *text_model_factory =
container_of(listener, struct text_model_factory, destroy_listener);
wl_display_remove_global(text_model_factory->ec->wl_display,
text_model_factory->text_model_factory_global);
free(text_model_factory);
}
WL_EXPORT void
text_model_factory_create(struct weston_compositor *ec)
{
struct text_model_factory *text_model_factory;
text_model_factory = calloc(1, sizeof *text_model_factory);
text_model_factory->ec = ec;
text_model_factory->text_model_factory_global =
wl_display_add_global(ec->wl_display,
&text_model_factory_interface,
text_model_factory, bind_text_model_factory);
text_model_factory->destroy_listener.notify = text_model_factory_notifier_destroy;
wl_signal_add(&ec->destroy_signal, &text_model_factory->destroy_listener);
}
static void
input_method_context_destroy(struct wl_client *client,
struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static void
input_method_context_commit_string(struct wl_client *client,
struct wl_resource *resource,
const char *text,
uint32_t index)
{
struct input_method_context *context = resource->data;
text_model_send_commit_string(&context->model->resource, text, index);
}
static const struct input_method_context_interface input_method_context_implementation = {
input_method_context_destroy,
input_method_context_commit_string
};
static void
destroy_input_method_context(struct wl_resource *resource)
{
struct input_method_context *context = resource->data;
free(context);
}
static void
input_method_context_create(struct text_model *model,
struct input_method *input_method)
{
struct input_method_context *context;
if (!input_method->input_method_binding)
return;
context = malloc(sizeof *context);
if (context == NULL)
return;
context->resource.destroy = destroy_input_method_context;
context->resource.object.id = 0;
context->resource.object.interface = &input_method_context_interface;
context->resource.object.implementation =
(void (**)(void)) &input_method_context_implementation;
context->resource.data = context;
wl_signal_init(&context->resource.destroy_signal);
context->model = model;
input_method->context = context;
wl_client_add_resource(input_method->input_method_binding->client, &context->resource);
input_method_send_activate(input_method->input_method_binding, &context->resource);
}
static void
unbind_input_method(struct wl_resource *resource)
{
struct input_method *input_method = resource->data;
input_method->input_method_binding = NULL;
input_method->context = NULL;
free(resource);
}
static void
bind_input_method(struct wl_client *client,
void *data,
uint32_t version,
uint32_t id)
{
struct input_method *input_method = data;
struct wl_resource *resource;
resource = wl_client_add_object(client, &input_method_interface,
NULL,
id, input_method);
if (input_method->input_method_binding == NULL) {
resource->destroy = unbind_input_method;
input_method->input_method_binding = resource;
return;
}
wl_resource_post_error(resource, WL_DISPLAY_ERROR_INVALID_OBJECT,
"interface object already bound");
wl_resource_destroy(resource);
}
static void
input_method_notifier_destroy(struct wl_listener *listener, void *data)
{
struct input_method *input_method =
container_of(listener, struct input_method, destroy_listener);
if (input_method->model)
deactivate_text_model(input_method->model, input_method);
wl_display_remove_global(input_method->seat->compositor->wl_display,
input_method->input_method_global);
free(input_method);
}
static void
handle_keyboard_focus(struct wl_listener *listener, void *data)
{
struct wl_keyboard *keyboard = data;
struct input_method *input_method =
container_of(listener, struct input_method, keyboard_focus_listener);
struct wl_surface *surface = keyboard->focus;
if (!input_method->model)
return;
if (!surface || input_method->model->surface != surface)
deactivate_text_model(input_method->model,
input_method);
}
static void
input_method_init_seat(struct weston_seat *seat)
{
if (seat->input_method->focus_listener_initialized)
return;
if (seat->has_keyboard) {
seat->input_method->keyboard_focus_listener.notify = handle_keyboard_focus;
wl_signal_add(&seat->seat.keyboard->focus_signal, &seat->input_method->keyboard_focus_listener);
}
seat->input_method->focus_listener_initialized = 1;
}
WL_EXPORT void
input_method_create(struct weston_compositor *ec,
struct weston_seat *seat)
{
struct input_method *input_method;
input_method = calloc(1, sizeof *input_method);
input_method->seat = seat;
input_method->model = NULL;
input_method->focus_listener_initialized = 0;
input_method->context = NULL;
input_method->input_method_global =
wl_display_add_global(ec->wl_display,
&input_method_interface,
input_method, bind_input_method);
input_method->destroy_listener.notify = input_method_notifier_destroy;
wl_signal_add(&seat->seat.destroy_signal, &input_method->destroy_listener);
seat->input_method = input_method;
}