gtk2/gtk/gtkimcontextwayland.c
Lionel Landwerlin faceaec20a imwayland: destroy objects only if it matches our manager object
Should fix one of the crash from #129.
2018-04-03 19:11:09 +02:00

629 lines
19 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 2017 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <wayland-client-protocol.h>
#include "gtk/gtkimcontextwayland.h"
#include "gtk/gtkintl.h"
#include "gtk/gtkimmoduleprivate.h"
#include "gdk/wayland/gdkwayland.h"
#include "gtk-text-input-client-protocol.h"
typedef struct _GtkIMContextWaylandGlobal GtkIMContextWaylandGlobal;
typedef struct _GtkIMContextWayland GtkIMContextWayland;
typedef struct _GtkIMContextWaylandClass GtkIMContextWaylandClass;
struct _GtkIMContextWaylandGlobal
{
struct wl_display *display;
struct wl_registry *registry;
uint32_t text_input_manager_wl_id;
struct gtk_text_input_manager *text_input_manager;
struct gtk_text_input *text_input;
uint32_t enter_serial;
GtkIMContext *current;
};
struct _GtkIMContextWaylandClass
{
GtkIMContextSimpleClass parent_class;
};
struct _GtkIMContextWayland
{
GtkIMContextSimple parent_instance;
GtkWidget *widget;
GtkGesture *gesture;
gdouble press_x;
gdouble press_y;
struct {
gchar *text;
gint cursor_idx;
} surrounding;
struct {
gchar *text;
gint cursor_idx;
} preedit;
cairo_rectangle_int_t cursor_rect;
guint use_preedit : 1;
};
G_DEFINE_TYPE_WITH_CODE (GtkIMContextWayland, gtk_im_context_wayland, GTK_TYPE_IM_CONTEXT_SIMPLE,
gtk_im_module_ensure_extension_point ();
g_io_extension_point_implement (GTK_IM_MODULE_EXTENSION_POINT_NAME,
g_define_type_id,
"wayland",
10));
static GtkIMContextWaylandGlobal *global = NULL;
#define GTK_IM_CONTEXT_WAYLAND(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), gtk_im_context_wayland_get_type (), GtkIMContextWayland))
static void
reset_preedit (GtkIMContextWayland *context)
{
if (context->preedit.text == NULL)
return;
g_clear_pointer (&context->preedit.text, g_free);
context->preedit.cursor_idx = 0;
g_signal_emit_by_name (context, "preedit-changed");
}
static void
text_input_enter (void *data,
struct gtk_text_input *text_input,
uint32_t serial,
struct wl_surface *surface)
{
GtkIMContextWaylandGlobal *global = data;
global->enter_serial = serial;
}
static void
text_input_leave (void *data,
struct gtk_text_input *text_input,
uint32_t serial,
struct wl_surface *surface)
{
GtkIMContextWayland *context;
if (!global->current)
return;
context = GTK_IM_CONTEXT_WAYLAND (global->current);
reset_preedit (context);
}
static void
text_input_preedit (void *data,
struct gtk_text_input *text_input,
const char *text,
guint cursor)
{
GtkIMContextWayland *context;
gboolean state_change;
if (!global->current)
return;
context = GTK_IM_CONTEXT_WAYLAND (global->current);
if (!text && !context->preedit.text)
return;
state_change = ((text == NULL) != (context->preedit.text == NULL));
if (state_change && !context->preedit.text)
g_signal_emit_by_name (context, "preedit-start");
g_free (context->preedit.text);
context->preedit.text = g_strdup (text);
context->preedit.cursor_idx = cursor;
g_signal_emit_by_name (context, "preedit-changed");
if (state_change && !context->preedit.text)
g_signal_emit_by_name (context, "preedit-end");
}
static void
text_input_commit (void *data,
struct gtk_text_input *text_input,
const char *text)
{
GtkIMContextWaylandGlobal *global = data;
if (global->current && text)
g_signal_emit_by_name (global->current, "commit", text);
}
static void
text_input_delete_surrounding_text (void *data,
struct gtk_text_input *text_input,
uint32_t offset,
uint32_t len)
{
GtkIMContextWaylandGlobal *global = data;
if (global->current)
g_signal_emit_by_name (global->current, "delete-surrounding", offset, len);
}
static const struct gtk_text_input_listener text_input_listener = {
text_input_enter,
text_input_leave,
text_input_preedit,
text_input_commit,
text_input_delete_surrounding_text
};
static void
registry_handle_global (void *data,
struct wl_registry *registry,
uint32_t id,
const char *interface,
uint32_t version)
{
GtkIMContextWaylandGlobal *global = data;
GdkSeat *seat = gdk_display_get_default_seat (gdk_display_get_default ());
if (strcmp (interface, "gtk_text_input_manager") == 0)
{
global->text_input_manager_wl_id = id;
global->text_input_manager =
wl_registry_bind (global->registry, global->text_input_manager_wl_id,
&gtk_text_input_manager_interface, 1);
global->text_input =
gtk_text_input_manager_get_text_input (global->text_input_manager,
gdk_wayland_seat_get_wl_seat (seat));
gtk_text_input_add_listener (global->text_input,
&text_input_listener, global);
}
}
static void
registry_handle_global_remove (void *data,
struct wl_registry *registry,
uint32_t id)
{
GtkIMContextWaylandGlobal *global = data;
if (id != global->text_input_manager_wl_id)
return;
g_clear_pointer(&global->text_input, gtk_text_input_destroy);
g_clear_pointer(&global->text_input_manager, gtk_text_input_manager_destroy);
}
static const struct wl_registry_listener registry_listener = {
registry_handle_global,
registry_handle_global_remove
};
static void
gtk_im_context_wayland_global_init (GdkDisplay *display)
{
if (global != NULL)
return;
global = g_new0 (GtkIMContextWaylandGlobal, 1);
global->display = gdk_wayland_display_get_wl_display (display);
global->registry = wl_display_get_registry (global->display);
wl_registry_add_listener (global->registry, &registry_listener, global);
}
static void
notify_surrounding_text (GtkIMContextWayland *context)
{
if (!global || !global->text_input)
return;
if (global->current != GTK_IM_CONTEXT (context))
return;
if (!context->surrounding.text)
return;
gtk_text_input_set_surrounding_text (global->text_input,
context->surrounding.text,
context->surrounding.cursor_idx,
context->surrounding.cursor_idx);
}
static void
notify_cursor_location (GtkIMContextWayland *context)
{
cairo_rectangle_int_t rect;
if (!global || !global->text_input)
return;
if (global->current != GTK_IM_CONTEXT (context))
return;
if (!context->widget)
return;
rect = context->cursor_rect;
gtk_widget_translate_coordinates (context->widget,
gtk_widget_get_toplevel (context->widget),
rect.x, rect.y,
&rect.x, &rect.y);
gtk_text_input_set_cursor_rectangle (global->text_input,
rect.x, rect.y,
rect.width, rect.height);
}
static uint32_t
translate_hints (GtkInputHints input_hints,
GtkInputPurpose purpose)
{
uint32_t hints = 0;
if (input_hints & GTK_INPUT_HINT_SPELLCHECK)
hints |= GTK_TEXT_INPUT_CONTENT_HINT_SPELLCHECK;
if (input_hints & GTK_INPUT_HINT_WORD_COMPLETION)
hints |= GTK_TEXT_INPUT_CONTENT_HINT_COMPLETION;
if (input_hints & GTK_INPUT_HINT_LOWERCASE)
hints |= GTK_TEXT_INPUT_CONTENT_HINT_LOWERCASE;
if (input_hints & GTK_INPUT_HINT_UPPERCASE_CHARS)
hints |= GTK_TEXT_INPUT_CONTENT_HINT_UPPERCASE;
if (input_hints & GTK_INPUT_HINT_UPPERCASE_WORDS)
hints |= GTK_TEXT_INPUT_CONTENT_HINT_TITLECASE;
if (input_hints & GTK_INPUT_HINT_UPPERCASE_SENTENCES)
hints |= GTK_TEXT_INPUT_CONTENT_HINT_AUTO_CAPITALIZATION;
if (purpose == GTK_INPUT_PURPOSE_PIN ||
purpose == GTK_INPUT_PURPOSE_PASSWORD)
{
hints |= (GTK_TEXT_INPUT_CONTENT_HINT_HIDDEN_TEXT |
GTK_TEXT_INPUT_CONTENT_HINT_SENSITIVE_DATA);
}
return hints;
}
static uint32_t
translate_purpose (GtkInputPurpose purpose)
{
switch (purpose)
{
case GTK_INPUT_PURPOSE_FREE_FORM:
return GTK_TEXT_INPUT_CONTENT_PURPOSE_NORMAL;
case GTK_INPUT_PURPOSE_ALPHA:
return GTK_TEXT_INPUT_CONTENT_PURPOSE_ALPHA;
case GTK_INPUT_PURPOSE_DIGITS:
return GTK_TEXT_INPUT_CONTENT_PURPOSE_DIGITS;
case GTK_INPUT_PURPOSE_NUMBER:
return GTK_TEXT_INPUT_CONTENT_PURPOSE_NUMBER;
case GTK_INPUT_PURPOSE_PHONE:
return GTK_TEXT_INPUT_CONTENT_PURPOSE_PHONE;
case GTK_INPUT_PURPOSE_URL:
return GTK_TEXT_INPUT_CONTENT_PURPOSE_URL;
case GTK_INPUT_PURPOSE_EMAIL:
return GTK_TEXT_INPUT_CONTENT_PURPOSE_EMAIL;
case GTK_INPUT_PURPOSE_NAME:
return GTK_TEXT_INPUT_CONTENT_PURPOSE_NAME;
case GTK_INPUT_PURPOSE_PASSWORD:
return GTK_TEXT_INPUT_CONTENT_PURPOSE_PASSWORD;
case GTK_INPUT_PURPOSE_PIN:
return GTK_TEXT_INPUT_CONTENT_PURPOSE_PIN;
default:
g_assert_not_reached ();
}
return GTK_TEXT_INPUT_CONTENT_PURPOSE_NORMAL;
}
static void
notify_content_type (GtkIMContextWayland *context)
{
GtkInputHints hints;
GtkInputPurpose purpose;
if (global->current != GTK_IM_CONTEXT (context))
return;
g_object_get (context,
"input-hints", &hints,
"input-purpose", &purpose,
NULL);
gtk_text_input_set_content_type (global->text_input,
translate_hints (hints, purpose),
translate_purpose (purpose));
}
static void
commit_state (GtkIMContextWayland *context)
{
if (global->current != GTK_IM_CONTEXT (context))
return;
gtk_text_input_commit (global->text_input);
}
static void
enable_text_input (GtkIMContextWayland *context,
gboolean toggle_panel)
{
guint flags = 0;
if (context->use_preedit)
flags |= GTK_TEXT_INPUT_ENABLE_FLAGS_CAN_SHOW_PREEDIT;
if (toggle_panel)
flags |= GTK_TEXT_INPUT_ENABLE_FLAGS_TOGGLE_INPUT_PANEL;
gtk_text_input_enable (global->text_input,
global->enter_serial,
flags);
}
static void
gtk_im_context_wayland_finalize (GObject *object)
{
GtkIMContextWayland *context = GTK_IM_CONTEXT_WAYLAND (object);
g_clear_object (&context->widget);
g_clear_object (&context->gesture);
G_OBJECT_CLASS (gtk_im_context_wayland_parent_class)->finalize (object);
}
static void
pressed_cb (GtkGestureMultiPress *gesture,
gint n_press,
gdouble x,
gdouble y,
GtkIMContextWayland *context)
{
if (n_press == 1)
{
context->press_x = x;
context->press_y = y;
}
}
static void
released_cb (GtkGestureMultiPress *gesture,
gint n_press,
gdouble x,
gdouble y,
GtkIMContextWayland *context)
{
GtkInputHints hints;
g_object_get (context, "input-hints", &hints, NULL);
if (n_press == 1 &&
(hints & GTK_INPUT_HINT_INHIBIT_OSK) == 0 &&
!gtk_drag_check_threshold (context->widget,
context->press_x,
context->press_y,
x, y))
{
enable_text_input (GTK_IM_CONTEXT_WAYLAND (context), TRUE);
}
}
static void
gtk_im_context_wayland_set_client_widget (GtkIMContext *context,
GtkWidget *widget)
{
GtkIMContextWayland *context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
if (widget == context_wayland->widget)
return;
if (context_wayland->widget && context_wayland->widget != widget)
g_clear_object (&context_wayland->gesture);
g_set_object (&context_wayland->widget, widget);
if (widget)
{
GtkGesture *gesture;
gesture = gtk_gesture_multi_press_new (widget);
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
GTK_PHASE_CAPTURE);
g_signal_connect (gesture, "pressed",
G_CALLBACK (pressed_cb), context);
g_signal_connect (gesture, "released",
G_CALLBACK (released_cb), context);
context_wayland->gesture = gesture;
}
}
static void
gtk_im_context_wayland_get_preedit_string (GtkIMContext *context,
gchar **str,
PangoAttrList **attrs,
gint *cursor_pos)
{
GtkIMContextWayland *context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
const char *preedit_str;
GTK_IM_CONTEXT_CLASS (gtk_im_context_wayland_parent_class)->get_preedit_string (context, str, attrs, cursor_pos);
/* If the parent implementation returns a len>0 string, go with it */
if (str && *str && **str)
return;
preedit_str =
context_wayland->preedit.text ? context_wayland->preedit.text : "";
if (str)
*str = g_strdup (preedit_str);
if (cursor_pos)
*cursor_pos = context_wayland->preedit.cursor_idx;
if (attrs)
{
*attrs = pango_attr_list_new ();
pango_attr_list_insert (*attrs,
pango_attr_underline_new (PANGO_UNDERLINE_SINGLE));
}
}
static gboolean
gtk_im_context_wayland_filter_keypress (GtkIMContext *context,
GdkEventKey *key)
{
/* This is done by the compositor */
return GTK_IM_CONTEXT_CLASS (gtk_im_context_wayland_parent_class)->filter_keypress (context, key);
}
static void
gtk_im_context_wayland_focus_in (GtkIMContext *context)
{
GtkIMContextWayland *context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
if (global->current == context)
return;
if (!global->text_input)
return;
global->current = context;
enable_text_input (context_wayland, FALSE);
notify_content_type (context_wayland);
notify_surrounding_text (context_wayland);
notify_cursor_location (context_wayland);
commit_state (context_wayland);
}
static void
gtk_im_context_wayland_focus_out (GtkIMContext *context)
{
if (global->current != context)
return;
gtk_text_input_disable (global->text_input);
global->current = NULL;
}
static void
gtk_im_context_wayland_reset (GtkIMContext *context)
{
reset_preedit (GTK_IM_CONTEXT_WAYLAND (context));
GTK_IM_CONTEXT_CLASS (gtk_im_context_wayland_parent_class)->reset (context);
}
static void
gtk_im_context_wayland_set_cursor_location (GtkIMContext *context,
GdkRectangle *rect)
{
GtkIMContextWayland *context_wayland;
context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
context_wayland->cursor_rect = *rect;
notify_cursor_location (context_wayland);
commit_state (context_wayland);
}
static void
gtk_im_context_wayland_set_use_preedit (GtkIMContext *context,
gboolean use_preedit)
{
GtkIMContextWayland *context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
context_wayland->use_preedit = !!use_preedit;
}
static void
gtk_im_context_wayland_set_surrounding (GtkIMContext *context,
const gchar *text,
gint len,
gint cursor_index)
{
GtkIMContextWayland *context_wayland;
context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
g_free (context_wayland->surrounding.text);
context_wayland->surrounding.text = g_strdup (text);
context_wayland->surrounding.cursor_idx = cursor_index;
notify_surrounding_text (context_wayland);
commit_state (context_wayland);
}
static gboolean
gtk_im_context_wayland_get_surrounding (GtkIMContext *context,
gchar **text,
gint *cursor_index)
{
GtkIMContextWayland *context_wayland;
context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
if (!context_wayland->surrounding.text)
return FALSE;
*text = context_wayland->surrounding.text;
*cursor_index = context_wayland->surrounding.cursor_idx;
return TRUE;
}
static void
gtk_im_context_wayland_class_init (GtkIMContextWaylandClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkIMContextClass *im_context_class = GTK_IM_CONTEXT_CLASS (klass);
object_class->finalize = gtk_im_context_wayland_finalize;
im_context_class->set_client_widget = gtk_im_context_wayland_set_client_widget;
im_context_class->get_preedit_string = gtk_im_context_wayland_get_preedit_string;
im_context_class->filter_keypress = gtk_im_context_wayland_filter_keypress;
im_context_class->focus_in = gtk_im_context_wayland_focus_in;
im_context_class->focus_out = gtk_im_context_wayland_focus_out;
im_context_class->reset = gtk_im_context_wayland_reset;
im_context_class->set_cursor_location = gtk_im_context_wayland_set_cursor_location;
im_context_class->set_use_preedit = gtk_im_context_wayland_set_use_preedit;
im_context_class->set_surrounding = gtk_im_context_wayland_set_surrounding;
im_context_class->get_surrounding = gtk_im_context_wayland_get_surrounding;
}
static void
on_content_type_changed (GtkIMContextWayland *context)
{
notify_content_type (context);
commit_state (context);
}
static void
gtk_im_context_wayland_init (GtkIMContextWayland *context)
{
gtk_im_context_wayland_global_init (gdk_display_get_default ());
context->use_preedit = TRUE;
g_signal_connect_swapped (context, "notify::input-purpose",
G_CALLBACK (on_content_type_changed), context);
g_signal_connect_swapped (context, "notify::input-hints",
G_CALLBACK (on_content_type_changed), context);
}