gtk2/modules/input/imwayland.c
Carlos Garnacho 4f78abddfc imwayland: Avoid TOGGLE_INPUT_PANEL requests if there's no focus
Fixes two things: 1) As GTK+ can be coerced into using the wayland IM
module despite the compositor not implementing the interface, all paths
not checking for global state before sending requests are prone to
crashes, this one fell hit this pitfall.

And 2) ensures the tap gesture only triggers TOGGLE_INPUT_PANEL if the
widget IM is focused. This is a possibility on eg. WebKit pages, where
its IM is only focused as long as a form element in the page is focused.
Tapping elsewhere shouldn't toggle the OSK.

https://gitlab.gnome.org/GNOME/gtk/issues/114

Closes: #114
2018-03-20 15:56:53 +01:00

690 lines
20 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/gtk.h>
#include "gtk/gtkintl.h"
#include "gtk/gtkimmodule.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;
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;
GdkWindow *window;
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;
};
GType type_wayland = 0;
static GObjectClass *parent_class;
static GtkIMContextWaylandGlobal *global = NULL;
static const GtkIMContextInfo imwayland_info =
{
"wayland", /* ID */
NC_("input method menu", "Wayland"), /* Human readable name */
GETTEXT_PACKAGE, /* Translation domain */
GTK_LOCALEDIR, /* Dir for bindtextdomain (not strictly needed for "gtk+") */
"", /* Languages for which this module is the default */
};
static const GtkIMContextInfo *info_list[] =
{
&imwayland_info,
};
#define GTK_IM_CONTEXT_WAYLAND(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), type_wayland, GtkIMContextWayland))
#ifndef INCLUDE_IM_wayland
#define MODULE_ENTRY(type,function) G_MODULE_EXPORT type im_module_ ## function
#else
#define MODULE_ENTRY(type, function) type _gtk_immodule_wayland_ ## function
#endif
static void
reset_preedit (GtkIMContextWayland *context)
{
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_registry_bind (global->registry, 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;
gtk_text_input_destroy (global->text_input);
global->text_input = NULL;
gtk_text_input_manager_destroy (global->text_input_manager);
global->text_input_manager = NULL;
}
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)
{
g_return_if_fail (global == NULL);
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->window)
return;
rect = context->cursor_rect;
gdk_window_get_root_coords (context->window, 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;
}
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->window);
g_clear_object (&context->gesture);
G_OBJECT_CLASS (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;
if (!global->current)
return;
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_window (GtkIMContext *context,
GdkWindow *window)
{
GtkIMContextWayland *context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
GtkWidget *widget = NULL;
if (window == context_wayland->window)
return;
if (window)
gdk_window_get_user_data (window, (gpointer*) &widget);
if (context_wayland->widget && context_wayland->widget != widget)
g_clear_object (&context_wayland->gesture);
g_set_object (&context_wayland->window, window);
if (context_wayland->widget != widget)
{
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);
gchar *preedit_str;
GTK_IM_CONTEXT_CLASS (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 (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 (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_window = gtk_im_context_wayland_set_client_window;
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;
parent_class = g_type_class_peek_parent (klass);
}
static void
on_content_type_changed (GtkIMContextWayland *context)
{
notify_content_type (context);
commit_state (context);
}
static void
gtk_im_context_wayland_init (GtkIMContextWayland *context)
{
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);
}
static void
gtk_im_context_wayland_register_type (GTypeModule *module)
{
const GTypeInfo object_info = {
sizeof (GtkIMContextWaylandClass),
NULL, NULL,
(GClassInitFunc) gtk_im_context_wayland_class_init,
NULL, NULL,
sizeof (GtkIMContextWayland),
0,
(GInstanceInitFunc) gtk_im_context_wayland_init,
};
type_wayland = g_type_module_register_type (module,
GTK_TYPE_IM_CONTEXT_SIMPLE,
"GtkIMContextWayland",
&object_info, 0);
}
MODULE_ENTRY (void, init) (GTypeModule * module)
{
gtk_im_context_wayland_register_type (module);
gtk_im_context_wayland_global_init (gdk_display_get_default ());
}
MODULE_ENTRY (void, exit) (void)
{
}
MODULE_ENTRY (void, list) (const GtkIMContextInfo *** contexts, int *n_contexts)
{
*contexts = info_list;
*n_contexts = G_N_ELEMENTS (info_list);
}
MODULE_ENTRY (GtkIMContext *, create) (const gchar * context_id)
{
if (strcmp (context_id, "wayland") == 0)
return g_object_new (type_wayland, NULL);
else
return NULL;
}