forked from AuroraMiddleware/gtk
a43d13aa74
It is enough to just set the parent (and make the parent call gtk_native_check_resize in size_allocate). This commit removes the relative_to argument to the constructors of GtkPopover and GtkPopoverMenu, and updates all callers.
663 lines
18 KiB
C
663 lines
18 KiB
C
/* gtkemojicompletion.c: An Emoji picker widget
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* Copyright 2017, Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkemojicompletion.h"
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#include "gtktextprivate.h"
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#include "gtkeditable.h"
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#include "gtkbox.h"
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#include "gtkcssprovider.h"
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#include "gtklistbox.h"
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#include "gtklabel.h"
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#include "gtkpopover.h"
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#include "gtkintl.h"
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#include "gtkprivate.h"
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#include "gtkgesturelongpress.h"
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#include "gtkeventcontrollerkey.h"
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#include "gtkflowbox.h"
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#include "gtkstack.h"
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#include "gtkstylecontext.h"
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struct _GtkEmojiCompletion
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{
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GtkPopover parent_instance;
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GtkText *entry;
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char *text;
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guint length;
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guint offset;
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gulong changed_id;
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guint n_matches;
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GtkWidget *list;
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GtkWidget *active;
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GtkWidget *active_variation;
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GVariant *data;
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};
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struct _GtkEmojiCompletionClass {
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GtkPopoverClass parent_class;
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};
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static void connect_signals (GtkEmojiCompletion *completion,
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GtkText *text);
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static void disconnect_signals (GtkEmojiCompletion *completion);
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static int populate_completion (GtkEmojiCompletion *completion,
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const char *text,
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guint offset);
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#define MAX_ROWS 5
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G_DEFINE_TYPE (GtkEmojiCompletion, gtk_emoji_completion, GTK_TYPE_POPOVER)
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static void
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gtk_emoji_completion_finalize (GObject *object)
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{
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GtkEmojiCompletion *completion = GTK_EMOJI_COMPLETION (object);
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disconnect_signals (completion);
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g_free (completion->text);
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g_variant_unref (completion->data);
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G_OBJECT_CLASS (gtk_emoji_completion_parent_class)->finalize (object);
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}
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static void
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update_completion (GtkEmojiCompletion *completion)
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{
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const char *text;
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guint length;
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guint n_matches;
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n_matches = 0;
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text = gtk_editable_get_text (GTK_EDITABLE (completion->entry));
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length = strlen (text);
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if (length > 0)
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{
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gboolean found_candidate = FALSE;
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const char *p;
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p = text + length;
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do
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{
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next:
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p = g_utf8_prev_char (p);
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if (*p == ':')
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{
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if (p + 1 == text + length)
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goto next;
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if (p == text || !g_unichar_isalnum (g_utf8_get_char (p - 1)))
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{
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found_candidate = TRUE;
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}
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break;
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}
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}
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while (g_unichar_isalnum (g_utf8_get_char (p)) || *p == '_');
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if (found_candidate)
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n_matches = populate_completion (completion, p, 0);
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}
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if (n_matches > 0)
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gtk_popover_popup (GTK_POPOVER (completion));
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else
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gtk_popover_popdown (GTK_POPOVER (completion));
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}
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static void
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changed_cb (GtkText *text,
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GtkEmojiCompletion *completion)
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{
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update_completion (completion);
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}
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static void
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emoji_activated (GtkWidget *row,
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GtkEmojiCompletion *completion)
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{
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const char *emoji;
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guint length;
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gtk_popover_popdown (GTK_POPOVER (completion));
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emoji = (const char *)g_object_get_data (G_OBJECT (row), "text");
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g_signal_handler_block (completion->entry, completion->changed_id);
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length = g_utf8_strlen (gtk_editable_get_text (GTK_EDITABLE (completion->entry)), -1);
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gtk_editable_select_region (GTK_EDITABLE (completion->entry), length - completion->length, length);
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gtk_text_enter_text (completion->entry, emoji);
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g_signal_handler_unblock (completion->entry, completion->changed_id);
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}
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static void
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row_activated (GtkListBox *list,
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GtkListBoxRow *row,
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gpointer data)
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{
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GtkEmojiCompletion *completion = data;
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emoji_activated (GTK_WIDGET (row), completion);
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}
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static void
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child_activated (GtkFlowBox *box,
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GtkFlowBoxChild *child,
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gpointer data)
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{
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GtkEmojiCompletion *completion = data;
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emoji_activated (GTK_WIDGET (child), completion);
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}
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static void
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move_active_row (GtkEmojiCompletion *completion,
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int direction)
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{
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GtkWidget *child;
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for (child = gtk_widget_get_first_child (completion->list);
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child != NULL;
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child = gtk_widget_get_next_sibling (child))
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gtk_widget_unset_state_flags (child, GTK_STATE_FLAG_FOCUSED);
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if (completion->active != NULL)
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{
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if (direction == 1)
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completion->active = gtk_widget_get_next_sibling (completion->active);
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else
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completion->active = gtk_widget_get_prev_sibling (completion->active);
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}
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if (completion->active == NULL)
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{
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if (direction == 1)
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completion->active = gtk_widget_get_first_child (completion->list);
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else
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completion->active = gtk_widget_get_last_child (completion->list);
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}
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if (completion->active != NULL)
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gtk_widget_set_state_flags (completion->active, GTK_STATE_FLAG_FOCUSED, FALSE);
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if (completion->active_variation)
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{
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gtk_widget_unset_state_flags (completion->active_variation, GTK_STATE_FLAG_FOCUSED);
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completion->active_variation = NULL;
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}
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}
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static void
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activate_active_row (GtkEmojiCompletion *completion)
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{
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if (GTK_IS_FLOW_BOX_CHILD (completion->active_variation))
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emoji_activated (completion->active_variation, completion);
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else if (completion->active != NULL)
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emoji_activated (completion->active, completion);
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}
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static void
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show_variations (GtkEmojiCompletion *completion,
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GtkWidget *row,
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gboolean visible)
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{
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GtkWidget *stack;
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GtkWidget *box;
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GtkWidget *child;
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gboolean is_visible;
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if (!row)
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return;
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stack = GTK_WIDGET (g_object_get_data (G_OBJECT (row), "stack"));
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box = gtk_stack_get_child_by_name (GTK_STACK (stack), "variations");
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if (!box)
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return;
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is_visible = gtk_stack_get_visible_child (GTK_STACK (stack)) == box;
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if (is_visible == visible)
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return;
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gtk_stack_set_visible_child_name (GTK_STACK (stack), visible ? "variations" : "text");
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for (child = gtk_widget_get_first_child (box); child; child = gtk_widget_get_next_sibling (child))
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gtk_widget_unset_state_flags (child, GTK_STATE_FLAG_FOCUSED);
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completion->active_variation = NULL;
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}
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static gboolean
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move_active_variation (GtkEmojiCompletion *completion,
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int direction)
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{
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GtkWidget *base;
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GtkWidget *stack;
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GtkWidget *box;
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GtkWidget *next;
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if (!completion->active)
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return FALSE;
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base = GTK_WIDGET (g_object_get_data (G_OBJECT (completion->active), "base"));
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stack = GTK_WIDGET (g_object_get_data (G_OBJECT (completion->active), "stack"));
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box = gtk_stack_get_child_by_name (GTK_STACK (stack), "variations");
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if (gtk_stack_get_visible_child (GTK_STACK (stack)) != box)
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return FALSE;
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next = NULL;
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if (!completion->active_variation)
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next = base;
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else if (completion->active_variation == base && direction == 1)
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next = gtk_widget_get_first_child (box);
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else if (completion->active_variation == gtk_widget_get_first_child (box) && direction == -1)
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next = base;
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else if (direction == 1)
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next = gtk_widget_get_next_sibling (completion->active_variation);
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else if (direction == -1)
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next = gtk_widget_get_prev_sibling (completion->active_variation);
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if (next)
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{
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if (completion->active_variation)
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gtk_widget_unset_state_flags (completion->active_variation, GTK_STATE_FLAG_FOCUSED);
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completion->active_variation = next;
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gtk_widget_set_state_flags (completion->active_variation, GTK_STATE_FLAG_FOCUSED, FALSE);
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}
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return next != NULL;
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}
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static gboolean
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key_press_cb (GtkEventControllerKey *key,
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guint keyval,
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guint keycode,
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GdkModifierType modifiers,
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GtkEmojiCompletion *completion)
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{
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if (!gtk_widget_get_visible (GTK_WIDGET (completion)))
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return FALSE;
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if (keyval == GDK_KEY_Escape)
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{
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gtk_popover_popdown (GTK_POPOVER (completion));
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return TRUE;
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}
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if (keyval == GDK_KEY_Tab)
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{
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show_variations (completion, completion->active, FALSE);
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guint offset = completion->offset + MAX_ROWS;
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if (offset >= completion->n_matches)
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offset = 0;
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populate_completion (completion, completion->text, offset);
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return TRUE;
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}
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if (keyval == GDK_KEY_Up)
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{
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show_variations (completion, completion->active, FALSE);
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move_active_row (completion, -1);
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return TRUE;
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}
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if (keyval == GDK_KEY_Down)
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{
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show_variations (completion, completion->active, FALSE);
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move_active_row (completion, 1);
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return TRUE;
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}
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if (keyval == GDK_KEY_Return ||
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keyval == GDK_KEY_KP_Enter ||
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keyval == GDK_KEY_ISO_Enter)
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{
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activate_active_row (completion);
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return TRUE;
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}
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if (keyval == GDK_KEY_Right)
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{
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show_variations (completion, completion->active, TRUE);
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move_active_variation (completion, 1);
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return TRUE;
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}
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if (keyval == GDK_KEY_Left)
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{
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if (!move_active_variation (completion, -1))
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show_variations (completion, completion->active, FALSE);
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return TRUE;
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}
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return FALSE;
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}
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static gboolean
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focus_out_cb (GtkWidget *text,
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GParamSpec *pspec,
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GtkEmojiCompletion *completion)
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{
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if (!gtk_widget_has_focus (text))
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gtk_popover_popdown (GTK_POPOVER (completion));
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return FALSE;
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}
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static void
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connect_signals (GtkEmojiCompletion *completion,
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GtkText *entry)
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{
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GtkEventController *key_controller;
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completion->entry = g_object_ref (entry);
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key_controller = gtk_text_get_key_controller (entry);
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g_signal_connect (key_controller, "key-pressed", G_CALLBACK (key_press_cb), completion);
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completion->changed_id = g_signal_connect (entry, "changed", G_CALLBACK (changed_cb), completion);
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g_signal_connect (entry, "notify::has-focus", G_CALLBACK (focus_out_cb), completion);
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}
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static void
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disconnect_signals (GtkEmojiCompletion *completion)
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{
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GtkEventController *key_controller;
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key_controller = gtk_text_get_key_controller (completion->entry);
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g_signal_handlers_disconnect_by_func (completion->entry, changed_cb, completion);
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g_signal_handlers_disconnect_by_func (key_controller, key_press_cb, completion);
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g_signal_handlers_disconnect_by_func (completion->entry, focus_out_cb, completion);
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g_clear_object (&completion->entry);
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}
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static gboolean
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has_variations (GVariant *emoji_data)
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{
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GVariant *codes;
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gsize i;
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gboolean has_variations;
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has_variations = FALSE;
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codes = g_variant_get_child_value (emoji_data, 0);
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for (i = 0; i < g_variant_n_children (codes); i++)
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{
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gunichar code;
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g_variant_get_child (codes, i, "u", &code);
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if (code == 0)
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{
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has_variations = TRUE;
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break;
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}
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}
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g_variant_unref (codes);
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return has_variations;
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}
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static void
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get_text (GVariant *emoji_data,
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gunichar modifier,
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char *text,
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gsize length)
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{
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GVariant *codes;
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gsize i;
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char *p;
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p = text;
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codes = g_variant_get_child_value (emoji_data, 0);
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for (i = 0; i < g_variant_n_children (codes); i++)
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{
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gunichar code;
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g_variant_get_child (codes, i, "u", &code);
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if (code == 0)
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code = modifier;
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if (code != 0)
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p += g_unichar_to_utf8 (code, p);
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}
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g_variant_unref (codes);
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p += g_unichar_to_utf8 (0xFE0F, p); /* U+FE0F is the Emoji variation selector */
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p[0] = 0;
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}
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static void
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add_emoji_variation (GtkWidget *box,
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GVariant *emoji_data,
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gunichar modifier)
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{
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GtkWidget *child;
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GtkWidget *label;
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PangoAttrList *attrs;
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char text[64];
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get_text (emoji_data, modifier, text, 64);
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label = gtk_label_new (text);
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attrs = pango_attr_list_new ();
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pango_attr_list_insert (attrs, pango_attr_scale_new (PANGO_SCALE_X_LARGE));
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gtk_label_set_attributes (GTK_LABEL (label), attrs);
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pango_attr_list_unref (attrs);
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child = g_object_new (GTK_TYPE_FLOW_BOX_CHILD, "css-name", "emoji", NULL);
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g_object_set_data_full (G_OBJECT (child), "text", g_strdup (text), g_free);
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g_object_set_data_full (G_OBJECT (child), "emoji-data",
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g_variant_ref (emoji_data),
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(GDestroyNotify)g_variant_unref);
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if (modifier != 0)
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g_object_set_data (G_OBJECT (child), "modifier", GUINT_TO_POINTER (modifier));
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gtk_container_add (GTK_CONTAINER (child), label);
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gtk_flow_box_insert (GTK_FLOW_BOX (box), child, -1);
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}
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static void
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add_emoji (GtkWidget *list,
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GVariant *emoji_data,
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GtkEmojiCompletion *completion)
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{
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GtkWidget *child;
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GtkWidget *label;
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GtkWidget *box;
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PangoAttrList *attrs;
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char text[64];
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const char *shortname;
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GtkWidget *stack;
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gunichar modifier;
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get_text (emoji_data, 0, text, 64);
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label = gtk_label_new (text);
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attrs = pango_attr_list_new ();
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pango_attr_list_insert (attrs, pango_attr_scale_new (PANGO_SCALE_X_LARGE));
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gtk_label_set_attributes (GTK_LABEL (label), attrs);
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pango_attr_list_unref (attrs);
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gtk_style_context_add_class (gtk_widget_get_style_context (label), "emoji");
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child = g_object_new (GTK_TYPE_LIST_BOX_ROW, "css-name", "emoji-completion-row", NULL);
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gtk_widget_set_focus_on_click (child, FALSE);
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box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
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gtk_container_add (GTK_CONTAINER (child), box);
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gtk_container_add (GTK_CONTAINER (box), label);
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g_object_set_data (G_OBJECT (child), "base", label);
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stack = gtk_stack_new ();
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gtk_stack_set_homogeneous (GTK_STACK (stack), TRUE);
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gtk_stack_set_transition_type (GTK_STACK (stack), GTK_STACK_TRANSITION_TYPE_OVER_RIGHT_LEFT);
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gtk_container_add (GTK_CONTAINER (box), stack);
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g_object_set_data (G_OBJECT (child), "stack", stack);
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g_variant_get_child (emoji_data, 2, "&s", &shortname);
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label = gtk_label_new (shortname);
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gtk_label_set_xalign (GTK_LABEL (label), 0);
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gtk_stack_add_named (GTK_STACK (stack), label, "text");
|
|
|
|
if (has_variations (emoji_data))
|
|
{
|
|
box = gtk_flow_box_new ();
|
|
gtk_flow_box_set_homogeneous (GTK_FLOW_BOX (box), TRUE);
|
|
gtk_flow_box_set_min_children_per_line (GTK_FLOW_BOX (box), 5);
|
|
gtk_flow_box_set_max_children_per_line (GTK_FLOW_BOX (box), 5);
|
|
gtk_flow_box_set_activate_on_single_click (GTK_FLOW_BOX (box), TRUE);
|
|
gtk_flow_box_set_selection_mode (GTK_FLOW_BOX (box), GTK_SELECTION_NONE);
|
|
g_signal_connect (box, "child-activated", G_CALLBACK (child_activated), completion);
|
|
for (modifier = 0x1f3fb; modifier <= 0x1f3ff; modifier++)
|
|
add_emoji_variation (box, emoji_data, modifier);
|
|
|
|
gtk_stack_add_named (GTK_STACK (stack), box, "variations");
|
|
}
|
|
|
|
g_object_set_data_full (G_OBJECT (child), "text", g_strdup (text), g_free);
|
|
g_object_set_data_full (G_OBJECT (child), "emoji-data",
|
|
g_variant_ref (emoji_data), (GDestroyNotify)g_variant_unref);
|
|
|
|
gtk_list_box_insert (GTK_LIST_BOX (list), child, -1);
|
|
}
|
|
|
|
static int
|
|
populate_completion (GtkEmojiCompletion *completion,
|
|
const char *text,
|
|
guint offset)
|
|
{
|
|
GList *children, *l;
|
|
guint n_matches;
|
|
guint n_added;
|
|
GVariantIter iter;
|
|
GVariant *item;
|
|
|
|
if (completion->text != text)
|
|
{
|
|
g_free (completion->text);
|
|
completion->text = g_strdup (text);
|
|
completion->length = g_utf8_strlen (text, -1);
|
|
}
|
|
completion->offset = offset;
|
|
|
|
children = gtk_container_get_children (GTK_CONTAINER (completion->list));
|
|
for (l = children; l; l = l->next)
|
|
gtk_widget_destroy (GTK_WIDGET (l->data));
|
|
g_list_free (children);
|
|
|
|
completion->active = NULL;
|
|
|
|
n_matches = 0;
|
|
n_added = 0;
|
|
g_variant_iter_init (&iter, completion->data);
|
|
while ((item = g_variant_iter_next_value (&iter)))
|
|
{
|
|
const char *shortname;
|
|
|
|
g_variant_get_child (item, 2, "&s", &shortname);
|
|
if (g_str_has_prefix (shortname, text))
|
|
{
|
|
n_matches++;
|
|
|
|
if (n_matches > offset && n_added < MAX_ROWS)
|
|
{
|
|
add_emoji (completion->list, item, completion);
|
|
n_added++;
|
|
}
|
|
}
|
|
}
|
|
|
|
completion->n_matches = n_matches;
|
|
|
|
if (n_added > 0)
|
|
{
|
|
completion->active = gtk_widget_get_first_child (completion->list);
|
|
gtk_widget_set_state_flags (completion->active, GTK_STATE_FLAG_FOCUSED, FALSE);
|
|
}
|
|
|
|
return n_added;
|
|
}
|
|
|
|
static void
|
|
long_pressed_cb (GtkGesture *gesture,
|
|
double x,
|
|
double y,
|
|
gpointer data)
|
|
{
|
|
GtkEmojiCompletion *completion = data;
|
|
GtkWidget *row;
|
|
|
|
row = GTK_WIDGET (gtk_list_box_get_row_at_y (GTK_LIST_BOX (completion->list), y));
|
|
if (!row)
|
|
return;
|
|
|
|
show_variations (completion, row, TRUE);
|
|
}
|
|
|
|
static void
|
|
gtk_emoji_completion_init (GtkEmojiCompletion *completion)
|
|
{
|
|
GBytes *bytes = NULL;
|
|
GtkGesture *long_press;
|
|
|
|
gtk_widget_init_template (GTK_WIDGET (completion));
|
|
|
|
bytes = g_resources_lookup_data ("/org/gtk/libgtk/emoji/emoji.data", 0, NULL);
|
|
completion->data = g_variant_ref_sink (g_variant_new_from_bytes (G_VARIANT_TYPE ("a(auss)"), bytes, TRUE));
|
|
|
|
g_bytes_unref (bytes);
|
|
|
|
long_press = gtk_gesture_long_press_new ();
|
|
g_signal_connect (long_press, "pressed", G_CALLBACK (long_pressed_cb), completion);
|
|
gtk_widget_add_controller (completion->list, GTK_EVENT_CONTROLLER (long_press));
|
|
}
|
|
|
|
static void
|
|
gtk_emoji_completion_class_init (GtkEmojiCompletionClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
|
|
|
|
object_class->finalize = gtk_emoji_completion_finalize;
|
|
|
|
gtk_widget_class_set_template_from_resource (widget_class, "/org/gtk/libgtk/ui/gtkemojicompletion.ui");
|
|
|
|
gtk_widget_class_bind_template_child (widget_class, GtkEmojiCompletion, list);
|
|
|
|
gtk_widget_class_bind_template_callback (widget_class, row_activated);
|
|
}
|
|
|
|
GtkWidget *
|
|
gtk_emoji_completion_new (GtkText *text)
|
|
{
|
|
GtkEmojiCompletion *completion;
|
|
|
|
completion = GTK_EMOJI_COMPLETION (g_object_new (GTK_TYPE_EMOJI_COMPLETION, NULL));
|
|
gtk_widget_set_parent (GTK_WIDGET (completion), GTK_WIDGET (text));
|
|
|
|
connect_signals (completion, text);
|
|
|
|
return GTK_WIDGET (completion);
|
|
}
|