jean
/
Learning_GTK4_tree
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
Learning_GTK4_tree/gtk/gtkemojichooser.c

1384 lines
41 KiB
C
Raw Permalink Normal View History

initial
2023-12-12 11:36:42 +01:00
/* gtkemojichooser.c: An Emoji chooser widget
* Copyright 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 "gtkemojichooser.h"
#include "gtkadjustmentprivate.h"
#include "gtkbox.h"
#include "gtkbutton.h"
#include "gtkentry.h"
#include "gtkflowboxprivate.h"
#include "gtkstack.h"
#include "gtklabel.h"
#include "gtkgesturelongpress.h"
#include "gtkpopover.h"
#include "gtkscrolledwindow.h"
#include "gtksearchentryprivate.h"
#include "gtktext.h"
#include "gtknative.h"
#include "gtkwidgetprivate.h"
#include "gdk/gdkprofilerprivate.h"
#include "gtkmain.h"
#include "gtkprivate.h"
/**
* GtkEmojiChooser:
*
* The `GtkEmojiChooser` is used by text widgets such as `GtkEntry` or
* `GtkTextView` to let users insert Emoji characters.
*
* ![An example GtkEmojiChooser](emojichooser.png)
*
* `GtkEmojiChooser` emits the [signal@Gtk.EmojiChooser::emoji-picked]
* signal when an Emoji is selected.
*
* # CSS nodes
*
* ```
* popover
* ├── box.emoji-searchbar
* │ ╰── entry.search
* ╰── box.emoji-toolbar
* ├── button.image-button.emoji-section
* ├── ...
* ╰── button.image-button.emoji-section
* ```
*
* Every `GtkEmojiChooser` consists of a main node called popover.
* The contents of the popover are largely implementation defined
* and supposed to inherit general styles.
* The top searchbar used to search emoji and gets the .emoji-searchbar
* style class itself.
* The bottom toolbar used to switch between different emoji categories
* consists of buttons with the .emoji-section style class and gets the
* .emoji-toolbar style class itself.
*/
#define BOX_SPACE 6
GType gtk_emoji_chooser_child_get_type (void);
#define GTK_TYPE_EMOJI_CHOOSER_CHILD (gtk_emoji_chooser_child_get_type ())
typedef struct
{
GtkFlowBoxChild parent;
GtkWidget *variations;
} GtkEmojiChooserChild;
typedef struct
{
GtkFlowBoxChildClass parent_class;
} GtkEmojiChooserChildClass;
G_DEFINE_TYPE (GtkEmojiChooserChild, gtk_emoji_chooser_child, GTK_TYPE_FLOW_BOX_CHILD)
static void
gtk_emoji_chooser_child_init (GtkEmojiChooserChild *child)
{
}
static void
gtk_emoji_chooser_child_dispose (GObject *object)
{
GtkEmojiChooserChild *child = (GtkEmojiChooserChild *)object;
g_clear_pointer (&child->variations, gtk_widget_unparent);
G_OBJECT_CLASS (gtk_emoji_chooser_child_parent_class)->dispose (object);
}
static void
gtk_emoji_chooser_child_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline)
{
GtkEmojiChooserChild *child = (GtkEmojiChooserChild *)widget;
GTK_WIDGET_CLASS (gtk_emoji_chooser_child_parent_class)->size_allocate (widget, width, height, baseline);
if (child->variations)
gtk_popover_present (GTK_POPOVER (child->variations));
}
static gboolean
gtk_emoji_chooser_child_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkEmojiChooserChild *child = (GtkEmojiChooserChild *)widget;
if (child->variations && gtk_widget_is_visible (child->variations))
{
if (gtk_widget_child_focus (child->variations, direction))
return TRUE;
}
return GTK_WIDGET_CLASS (gtk_emoji_chooser_child_parent_class)->focus (widget, direction);
}
static void scroll_to_child (GtkWidget *child);
static gboolean
gtk_emoji_chooser_child_grab_focus (GtkWidget *widget)
{
gtk_widget_grab_focus_self (widget);
scroll_to_child (widget);
return TRUE;
}
static void show_variations (GtkEmojiChooser *chooser,
GtkWidget *child);
static void
gtk_emoji_chooser_child_popup_menu (GtkWidget *widget,
const char *action_name,
GVariant *parameters)
{
GtkWidget *chooser;
chooser = gtk_widget_get_ancestor (widget, GTK_TYPE_EMOJI_CHOOSER);
show_variations (GTK_EMOJI_CHOOSER (chooser), widget);
}
static void
gtk_emoji_chooser_child_class_init (GtkEmojiChooserChildClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
object_class->dispose = gtk_emoji_chooser_child_dispose;
widget_class->size_allocate = gtk_emoji_chooser_child_size_allocate;
widget_class->focus = gtk_emoji_chooser_child_focus;
widget_class->grab_focus = gtk_emoji_chooser_child_grab_focus;
gtk_widget_class_install_action (widget_class, "menu.popup", NULL, gtk_emoji_chooser_child_popup_menu);
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_F10, GDK_SHIFT_MASK,
"menu.popup",
NULL);
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_Menu, 0,
"menu.popup",
NULL);
gtk_widget_class_set_css_name (widget_class, "emoji");
}
typedef struct {
GtkWidget *box;
GtkWidget *heading;
GtkWidget *button;
int group;
gunichar label;
gboolean empty;
} EmojiSection;
struct _GtkEmojiChooser
{
GtkPopover parent_instance;
GtkWidget *search_entry;
GtkWidget *stack;
GtkWidget *scrolled_window;
int emoji_max_width;
EmojiSection recent;
EmojiSection people;
EmojiSection body;
EmojiSection nature;
EmojiSection food;
EmojiSection travel;
EmojiSection activities;
EmojiSection objects;
EmojiSection symbols;
EmojiSection flags;
GVariant *data;
GtkWidget *box;
GVariantIter *iter;
guint populate_idle;
GSettings *settings;
};
struct _GtkEmojiChooserClass {
GtkPopoverClass parent_class;
};
enum {
EMOJI_PICKED,
LAST_SIGNAL
};
static int signals[LAST_SIGNAL];
G_DEFINE_TYPE (GtkEmojiChooser, gtk_emoji_chooser, GTK_TYPE_POPOVER)
static void
gtk_emoji_chooser_finalize (GObject *object)
{
GtkEmojiChooser *chooser = GTK_EMOJI_CHOOSER (object);
if (chooser->populate_idle)
g_source_remove (chooser->populate_idle);
g_clear_pointer (&chooser->data, g_variant_unref);
g_clear_object (&chooser->settings);
G_OBJECT_CLASS (gtk_emoji_chooser_parent_class)->finalize (object);
}
static void
gtk_emoji_chooser_dispose (GObject *object)
{
gtk_widget_dispose_template (GTK_WIDGET (object), GTK_TYPE_EMOJI_CHOOSER);
G_OBJECT_CLASS (gtk_emoji_chooser_parent_class)->dispose (object);
}
static void
scroll_to_section (EmojiSection *section)
{
GtkEmojiChooser *chooser;
GtkAdjustment *adj;
graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0);
chooser = GTK_EMOJI_CHOOSER (gtk_widget_get_ancestor (section->box, GTK_TYPE_EMOJI_CHOOSER));
adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (chooser->scrolled_window));
if (section->heading)
{
if (!gtk_widget_compute_bounds (section->heading, gtk_widget_get_parent (section->heading), &bounds))
graphene_rect_init (&bounds, 0, 0, 0, 0);
}
gtk_adjustment_animate_to_value (adj, bounds.origin.y - BOX_SPACE);
}
static void
scroll_to_child (GtkWidget *child)
{
GtkEmojiChooser *chooser;
GtkAdjustment *adj;
graphene_point_t p;
double value;
double page_size;
graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0);
chooser = GTK_EMOJI_CHOOSER (gtk_widget_get_ancestor (child, GTK_TYPE_EMOJI_CHOOSER));
adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (chooser->scrolled_window));
if (!gtk_widget_compute_bounds (child, gtk_widget_get_parent (child), &bounds))
graphene_rect_init (&bounds, 0, 0, 0, 0);
value = gtk_adjustment_get_value (adj);
page_size = gtk_adjustment_get_page_size (adj);
if (!gtk_widget_compute_point (child, gtk_widget_get_parent (chooser->recent.box),
&GRAPHENE_POINT_INIT (0, 0), &p))
return;
if (p.y < value)
gtk_adjustment_animate_to_value (adj, p.y);
else if (p.y + bounds.size.height >= value + page_size)
gtk_adjustment_animate_to_value (adj, value + ((p.y + bounds.size.height) - (value + page_size)));
}
static void
add_emoji (GtkWidget *box,
gboolean prepend,
GVariant *item,
gunichar modifier,
GtkEmojiChooser *chooser);
#define MAX_RECENT (7*3)
static void
populate_recent_section (GtkEmojiChooser *chooser)
{
GVariant *variant;
GVariant *item;
GVariantIter iter;
gboolean empty = TRUE;
variant = g_settings_get_value (chooser->settings, "recent-emoji");
g_variant_iter_init (&iter, variant);
while ((item = g_variant_iter_next_value (&iter)))
{
GVariant *emoji_data;
gunichar modifier;
emoji_data = g_variant_get_child_value (item, 0);
g_variant_get_child (item, 1, "u", &modifier);
add_emoji (chooser->recent.box, FALSE, emoji_data, modifier, chooser);
g_variant_unref (emoji_data);
g_variant_unref (item);
empty = FALSE;
}
gtk_widget_set_visible (chooser->recent.box, !empty);
gtk_widget_set_sensitive (chooser->recent.button, !empty);
g_variant_unref (variant);
}
static void
add_recent_item (GtkEmojiChooser *chooser,
GVariant *item,
gunichar modifier)
{
GList *children, *l;
int i;
GVariantBuilder builder;
GtkWidget *child;
g_variant_ref (item);
g_variant_builder_init (&builder, G_VARIANT_TYPE ("a((ausasu)u)"));
g_variant_builder_add (&builder, "(@(ausasu)u)", item, modifier);
children = NULL;
for (child = gtk_widget_get_last_child (chooser->recent.box);
child != NULL;
child = gtk_widget_get_prev_sibling (child))
children = g_list_prepend (children, child);
for (l = children, i = 1; l; l = l->next, i++)
{
GVariant *item2 = g_object_get_data (G_OBJECT (l->data), "emoji-data");
gunichar modifier2 = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (l->data), "modifier"));
if (modifier == modifier2 && g_variant_equal (item, item2))
{
gtk_flow_box_remove (GTK_FLOW_BOX (chooser->recent.box), l->data);
i--;
continue;
}
if (i >= MAX_RECENT)
{
gtk_flow_box_remove (GTK_FLOW_BOX (chooser->recent.box), l->data);
continue;
}
g_variant_builder_add (&builder, "(@(ausasu)u)", item2, modifier2);
}
g_list_free (children);
add_emoji (chooser->recent.box, TRUE, item, modifier, chooser);
/* Enable recent */
gtk_widget_set_visible (chooser->recent.box, TRUE);
gtk_widget_set_sensitive (chooser->recent.button, TRUE);
g_settings_set_value (chooser->settings, "recent-emoji", g_variant_builder_end (&builder));
g_variant_unref (item);
}
static gboolean
should_close (GtkEmojiChooser *chooser)
{
GdkDisplay *display;
GdkSeat *seat;
GdkDevice *device;
GdkModifierType state;
display = gtk_widget_get_display (GTK_WIDGET (chooser));
seat = gdk_display_get_default_seat (display);
device = gdk_seat_get_keyboard (seat);
state = gdk_device_get_modifier_state (device);
return (state & GDK_CONTROL_MASK) == 0;
}
static void
emoji_activated (GtkFlowBox *box,
GtkFlowBoxChild *child,
gpointer data)
{
GtkEmojiChooser *chooser = data;
char *text;
GtkWidget *label;
GVariant *item;
gunichar modifier;
if (should_close (chooser))
gtk_popover_popdown (GTK_POPOVER (chooser));
else
{
GtkWidget *popover;
popover = gtk_widget_get_ancestor (GTK_WIDGET (box), GTK_TYPE_POPOVER);
if (popover != GTK_WIDGET (chooser))
gtk_popover_popdown (GTK_POPOVER (popover));
}
label = gtk_flow_box_child_get_child (child);
text = g_strdup (gtk_label_get_label (GTK_LABEL (label)));
item = (GVariant*) g_object_get_data (G_OBJECT (child), "emoji-data");
modifier = (gunichar) GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (child), "modifier"));
add_recent_item (chooser, item, modifier);
g_signal_emit (data, signals[EMOJI_PICKED], 0, text);
g_free (text);
}
static gboolean
has_variations (GVariant *emoji_data)
{
GVariant *codes;
int i;
gboolean has_variations;
has_variations = FALSE;
codes = g_variant_get_child_value (emoji_data, 0);
for (i = 0; i < g_variant_n_children (codes); i++)
{
gunichar code;
g_variant_get_child (codes, i, "u", &code);
if (code == 0)
{
has_variations = TRUE;
break;
}
}
g_variant_unref (codes);
return has_variations;
}
static void
show_variations (GtkEmojiChooser *chooser,
GtkWidget *child)
{
GtkWidget *popover;
GtkWidget *view;
GtkWidget *box;
GVariant *emoji_data;
GtkWidget *parent_popover;
gunichar modifier;
GtkEmojiChooserChild *ch = (GtkEmojiChooserChild *)child;
if (!child)
return;
emoji_data = (GVariant*) g_object_get_data (G_OBJECT (child), "emoji-data");
if (!emoji_data)
return;
if (!has_variations (emoji_data))
return;
parent_popover = gtk_widget_get_ancestor (child, GTK_TYPE_POPOVER);
g_clear_pointer (&ch->variations, gtk_widget_unparent);
popover = ch->variations = gtk_popover_new ();
gtk_popover_set_autohide (GTK_POPOVER (popover), TRUE);
gtk_widget_set_parent (popover, child);
view = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_widget_add_css_class (view, "view");
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), 6);
gtk_flow_box_set_max_children_per_line (GTK_FLOW_BOX (box), 6);
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_object_set (box, "accept-unpaired-release", TRUE, NULL);
gtk_popover_set_child (GTK_POPOVER (popover), view);
gtk_box_append (GTK_BOX (view), box);
g_signal_connect (box, "child-activated", G_CALLBACK (emoji_activated), parent_popover);
add_emoji (box, FALSE, emoji_data, 0, chooser);
for (modifier = 0x1f3fb; modifier <= 0x1f3ff; modifier++)
add_emoji (box, FALSE, emoji_data, modifier, chooser);
gtk_popover_popup (GTK_POPOVER (popover));
}
static void
long_pressed_cb (GtkGesture *gesture,
double x,
double y,
gpointer data)
{
GtkEmojiChooser *chooser = data;
GtkWidget *box;
GtkWidget *child;
box = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
child = GTK_WIDGET (gtk_flow_box_get_child_at_pos (GTK_FLOW_BOX (box), x, y));
show_variations (chooser, child);
}
static void
pressed_cb (GtkGesture *gesture,
int n_press,
double x,
double y,
gpointer data)
{
GtkEmojiChooser *chooser = data;
GtkWidget *box;
GtkWidget *child;
box = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
child = GTK_WIDGET (gtk_flow_box_get_child_at_pos (GTK_FLOW_BOX (box), x, y));
show_variations (chooser, child);
}
static void
add_emoji (GtkWidget *box,
gboolean prepend,
GVariant *item,
gunichar modifier,
GtkEmojiChooser *chooser)
{
GtkWidget *child;
GtkWidget *label;
PangoAttrList *attrs;
GVariant *codes;
char text[64];
char *p = text;
int i;
PangoLayout *layout;
PangoRectangle rect;
gunichar code = 0;
codes = g_variant_get_child_value (item, 0);
for (i = 0; i < g_variant_n_children (codes); i++)
{
g_variant_get_child (codes, i, "u", &code);
if (code == 0)
code = modifier;
if (code != 0)
p += g_unichar_to_utf8 (code, p);
}
g_variant_unref (codes);
if (code != 0xFE0F && code != 0xFE0E)
p += g_unichar_to_utf8 (0xFE0F, p); /* Append a variation selector, if there isn't one already */
p[0] = 0;
label = gtk_label_new (text);
attrs = pango_attr_list_new ();
pango_attr_list_insert (attrs, pango_attr_scale_new (PANGO_SCALE_X_LARGE));
gtk_label_set_attributes (GTK_LABEL (label), attrs);
pango_attr_list_unref (attrs);
layout = gtk_label_get_layout (GTK_LABEL (label));
pango_layout_get_extents (layout, &rect, NULL);
/* Check for fallback rendering that generates too wide items */
if (pango_layout_get_unknown_glyphs_count (layout) > 0 ||
rect.width >= 1.5 * chooser->emoji_max_width)
{
g_object_ref_sink (label);
g_object_unref (label);
return;
}
child = g_object_new (GTK_TYPE_EMOJI_CHOOSER_CHILD, NULL);
g_object_set_data_full (G_OBJECT (child), "emoji-data",
g_variant_ref (item),
(GDestroyNotify)g_variant_unref);
if (modifier != 0)
g_object_set_data (G_OBJECT (child), "modifier", GUINT_TO_POINTER (modifier));
gtk_flow_box_child_set_child (GTK_FLOW_BOX_CHILD (child), label);
gtk_flow_box_insert (GTK_FLOW_BOX (box), child, prepend ? 0 : -1);
}
static GBytes *
get_emoji_data_by_language (const char *lang)
{
GBytes *bytes;
char *path;
GError *error = NULL;
path = g_strconcat ("/org/gtk/libgtk/emoji/", lang, ".data", NULL);
bytes = g_resources_lookup_data (path, 0, &error);
if (bytes)
{
g_debug ("Found emoji data for %s in resource %s", lang, path);
g_free (path);
return bytes;
}
if (g_error_matches (error, G_RESOURCE_ERROR, G_RESOURCE_ERROR_NOT_FOUND))
{
char *filename;
char *gresource_name;
GMappedFile *file;
g_clear_error (&error);
gresource_name = g_strconcat (lang, ".gresource", NULL);
filename = g_build_filename (_gtk_get_data_prefix (), "share", "gtk-4.0",
"emoji", gresource_name, NULL);
g_clear_pointer (&gresource_name, g_free);
file = g_mapped_file_new (filename, FALSE, NULL);
if (file)
{
GBytes *data;
GResource *resource;
data = g_mapped_file_get_bytes (file);
g_mapped_file_unref (file);
resource = g_resource_new_from_data (data, NULL);
g_bytes_unref (data);
g_debug ("Registering resource for Emoji data for %s from file %s", lang, filename);
g_resources_register (resource);
g_resource_unref (resource);
bytes = g_resources_lookup_data (path, 0, NULL);
if (bytes)
{
g_debug ("Found emoji data for %s in resource %s", lang, path);
g_free (path);
g_free (filename);
return bytes;
}
}
g_free (filename);
}
g_clear_error (&error);
g_free (path);
return NULL;
}
GBytes *
get_emoji_data (void)
{
GBytes *bytes;
const char *lang;
lang = pango_language_to_string (gtk_get_default_language ());
bytes = get_emoji_data_by_language (lang);
if (bytes)
return bytes;
if (strchr (lang, '-'))
{
char q[5];
int i;
for (i = 0; lang[i] != '-' && i < 4; i++)
q[i] = lang[i];
q[i] = '\0';
bytes = get_emoji_data_by_language (q);
if (bytes)
return bytes;
}
bytes = get_emoji_data_by_language ("en");
g_assert (bytes);
return bytes;
}
static gboolean
populate_emoji_chooser (gpointer data)
{
GtkEmojiChooser *chooser = data;
GVariant *item;
gint64 start, now;
start = g_get_monotonic_time ();
if (!chooser->data)
{
GBytes *bytes;
bytes = get_emoji_data ();
chooser->data = g_variant_ref_sink (g_variant_new_from_bytes (G_VARIANT_TYPE ("a(ausasu)"), bytes, TRUE));
g_bytes_unref (bytes);
}
if (!chooser->iter)
{
chooser->iter = g_variant_iter_new (chooser->data);
chooser->box = chooser->people.box;
}
while ((item = g_variant_iter_next_value (chooser->iter)))
{
guint group;
g_variant_get_child (item, 3, "u", &group);
if (group == chooser->people.group)
chooser->box = chooser->people.box;
else if (group == chooser->body.group)
chooser->box = chooser->body.box;
else if (group == chooser->nature.group)
chooser->box = chooser->nature.box;
else if (group == chooser->food.group)
chooser->box = chooser->food.box;
else if (group == chooser->travel.group)
chooser->box = chooser->travel.box;
else if (group == chooser->activities.group)
chooser->box = chooser->activities.box;
else if (group == chooser->objects.group)
chooser->box = chooser->objects.box;
else if (group == chooser->symbols.group)
chooser->box = chooser->symbols.box;
else if (group == chooser->flags.group)
chooser->box = chooser->flags.box;
add_emoji (chooser->box, FALSE, item, 0, chooser);
g_variant_unref (item);
now = g_get_monotonic_time ();
if (now > start + 200) /* 2 ms */
{
gdk_profiler_add_mark (start * 1000, (now - start) * 1000, "emojichooser", "populate");
return G_SOURCE_CONTINUE;
}
}
g_variant_iter_free (chooser->iter);
chooser->iter = NULL;
chooser->box = NULL;
chooser->populate_idle = 0;
gdk_profiler_end_mark (start, "emojichooser", "populate (finish)");
return G_SOURCE_REMOVE;
}
static void
adj_value_changed (GtkAdjustment *adj,
gpointer data)
{
GtkEmojiChooser *chooser = data;
double value = gtk_adjustment_get_value (adj);
EmojiSection const *sections[] = {
&chooser->recent,
&chooser->people,
&chooser->body,
&chooser->nature,
&chooser->food,
&chooser->travel,
&chooser->activities,
&chooser->objects,
&chooser->symbols,
&chooser->flags,
};
EmojiSection const *select_section = sections[0];
gsize i;
/* Figure out which section the current scroll position is within */
for (i = 0; i < G_N_ELEMENTS (sections); ++i)
{
EmojiSection const *section = sections[i];
GtkWidget *child;
graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0);
if (!gtk_widget_get_visible (section->box))
continue;
if (section->heading)
child = section->heading;
else
child = section->box;
if (!gtk_widget_compute_bounds (child, gtk_widget_get_parent (child), &bounds))
graphene_rect_init (&bounds, 0, 0, 0, 0);
if (value < bounds.origin.y - BOX_SPACE)
break;
select_section = section;
}
/* Un/Check the section buttons accordingly */
for (i = 0; i < G_N_ELEMENTS (sections); ++i)
{
EmojiSection const *section = sections[i];
if (section == select_section)
gtk_widget_set_state_flags (section->button, GTK_STATE_FLAG_CHECKED, FALSE);
else
gtk_widget_unset_state_flags (section->button, GTK_STATE_FLAG_CHECKED);
}
}
static gboolean
match_tokens (const char **term_tokens,
const char **hit_tokens)
{
int i, j;
gboolean matched;
matched = TRUE;
for (i = 0; term_tokens[i]; i++)
{
for (j = 0; hit_tokens[j]; j++)
if (g_str_has_prefix (hit_tokens[j], term_tokens[i]))
goto one_matched;
matched = FALSE;
break;
one_matched:
continue;
}
return matched;
}
static gboolean
filter_func (GtkFlowBoxChild *child,
gpointer data)
{
EmojiSection *section = data;
GtkEmojiChooser *chooser;
GVariant *emoji_data;
const char *text;
const char *name;
const char **keywords;
char **term_tokens;
char **name_tokens;
gboolean res;
res = TRUE;
chooser = GTK_EMOJI_CHOOSER (gtk_widget_get_ancestor (GTK_WIDGET (child), GTK_TYPE_EMOJI_CHOOSER));
text = gtk_editable_get_text (GTK_EDITABLE (chooser->search_entry));
emoji_data = (GVariant *) g_object_get_data (G_OBJECT (child), "emoji-data");
if (text[0] == 0)
goto out;
if (!emoji_data)
goto out;
term_tokens = g_str_tokenize_and_fold (text, "en", NULL);
g_variant_get_child (emoji_data, 1, "&s", &name);
name_tokens = g_str_tokenize_and_fold (name, "en", NULL);
g_variant_get_child (emoji_data, 2, "^a&s", &keywords);
res = match_tokens ((const char **)term_tokens, (const char **)name_tokens) ||
match_tokens ((const char **)term_tokens, keywords);
g_strfreev (term_tokens);
g_strfreev (name_tokens);
out:
if (res)
section->empty = FALSE;
return res;
}
static void
invalidate_section (EmojiSection *section)
{
section->empty = TRUE;
gtk_flow_box_invalidate_filter (GTK_FLOW_BOX (section->box));
}
static void
update_headings (GtkEmojiChooser *chooser)
{
gtk_widget_set_visible (chooser->people.heading, !chooser->people.empty);
gtk_widget_set_visible (chooser->people.box, !chooser->people.empty);
gtk_widget_set_visible (chooser->body.heading, !chooser->body.empty);
gtk_widget_set_visible (chooser->body.box, !chooser->body.empty);
gtk_widget_set_visible (chooser->nature.heading, !chooser->nature.empty);
gtk_widget_set_visible (chooser->nature.box, !chooser->nature.empty);
gtk_widget_set_visible (chooser->food.heading, !chooser->food.empty);
gtk_widget_set_visible (chooser->food.box, !chooser->food.empty);
gtk_widget_set_visible (chooser->travel.heading, !chooser->travel.empty);
gtk_widget_set_visible (chooser->travel.box, !chooser->travel.empty);
gtk_widget_set_visible (chooser->activities.heading, !chooser->activities.empty);
gtk_widget_set_visible (chooser->activities.box, !chooser->activities.empty);
gtk_widget_set_visible (chooser->objects.heading, !chooser->objects.empty);
gtk_widget_set_visible (chooser->objects.box, !chooser->objects.empty);
gtk_widget_set_visible (chooser->symbols.heading, !chooser->symbols.empty);
gtk_widget_set_visible (chooser->symbols.box, !chooser->symbols.empty);
gtk_widget_set_visible (chooser->flags.heading, !chooser->flags.empty);
gtk_widget_set_visible (chooser->flags.box, !chooser->flags.empty);
if (chooser->recent.empty && chooser->people.empty &&
chooser->body.empty && chooser->nature.empty &&
chooser->food.empty && chooser->travel.empty &&
chooser->activities.empty && chooser->objects.empty &&
chooser->symbols.empty && chooser->flags.empty)
gtk_stack_set_visible_child_name (GTK_STACK (chooser->stack), "empty");
else
gtk_stack_set_visible_child_name (GTK_STACK (chooser->stack), "list");
}
static void
search_changed (GtkEntry *entry,
gpointer data)
{
GtkEmojiChooser *chooser = data;
invalidate_section (&chooser->recent);
invalidate_section (&chooser->people);
invalidate_section (&chooser->body);
invalidate_section (&chooser->nature);
invalidate_section (&chooser->food);
invalidate_section (&chooser->travel);
invalidate_section (&chooser->activities);
invalidate_section (&chooser->objects);
invalidate_section (&chooser->symbols);
invalidate_section (&chooser->flags);
update_headings (chooser);
}
static void
stop_search (GtkEntry *entry,
gpointer data)
{
gtk_popover_popdown (GTK_POPOVER (data));
}
static void
setup_section (GtkEmojiChooser *chooser,
EmojiSection *section,
int group,
const char *icon)
{
section->group = group;
gtk_button_set_icon_name (GTK_BUTTON (section->button), icon);
gtk_flow_box_disable_move_cursor (GTK_FLOW_BOX (section->box));
gtk_flow_box_set_filter_func (GTK_FLOW_BOX (section->box), filter_func, section, NULL);
g_signal_connect_swapped (section->button, "clicked", G_CALLBACK (scroll_to_section), section);
}
static void
gtk_emoji_chooser_init (GtkEmojiChooser *chooser)
{
GtkAdjustment *adj;
GtkText *text;
chooser->settings = g_settings_new ("org.gtk.gtk4.Settings.EmojiChooser");
gtk_widget_init_template (GTK_WIDGET (chooser));
text = gtk_search_entry_get_text_widget (GTK_SEARCH_ENTRY (chooser->search_entry));
gtk_text_set_input_hints (text, GTK_INPUT_HINT_NO_EMOJI);
/* Get a reasonable maximum width for an emoji. We do this to
* skip overly wide fallback rendering for certain emojis the
* font does not contain and therefore end up being rendered
* as multiply glyphs.
*/
{
PangoLayout *layout = gtk_widget_create_pango_layout (GTK_WIDGET (chooser), "🙂");
PangoAttrList *attrs;
PangoRectangle rect;
attrs = pango_attr_list_new ();
pango_attr_list_insert (attrs, pango_attr_scale_new (PANGO_SCALE_X_LARGE));
pango_layout_set_attributes (layout, attrs);
pango_attr_list_unref (attrs);
pango_layout_get_extents (layout, &rect, NULL);
chooser->emoji_max_width = rect.width;
g_object_unref (layout);
}
adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (chooser->scrolled_window));
g_signal_connect (adj, "value-changed", G_CALLBACK (adj_value_changed), chooser);
setup_section (chooser, &chooser->recent, -1, "emoji-recent-symbolic");
setup_section (chooser, &chooser->people, 0, "emoji-people-symbolic");
setup_section (chooser, &chooser->body, 1, "emoji-body-symbolic");
setup_section (chooser, &chooser->nature, 3, "emoji-nature-symbolic");
setup_section (chooser, &chooser->food, 4, "emoji-food-symbolic");
setup_section (chooser, &chooser->travel, 5, "emoji-travel-symbolic");
setup_section (chooser, &chooser->activities, 6, "emoji-activities-symbolic");
setup_section (chooser, &chooser->objects, 7, "emoji-objects-symbolic");
setup_section (chooser, &chooser->symbols, 8, "emoji-symbols-symbolic");
setup_section (chooser, &chooser->flags, 9, "emoji-flags-symbolic");
populate_recent_section (chooser);
chooser->populate_idle = g_idle_add (populate_emoji_chooser, chooser);
gdk_source_set_static_name_by_id (chooser->populate_idle, "[gtk] populate_emoji_chooser");
}
static void
gtk_emoji_chooser_show (GtkWidget *widget)
{
GtkEmojiChooser *chooser = GTK_EMOJI_CHOOSER (widget);
GtkAdjustment *adj;
GTK_WIDGET_CLASS (gtk_emoji_chooser_parent_class)->show (widget);
adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (chooser->scrolled_window));
gtk_adjustment_set_value (adj, 0);
adj_value_changed (adj, chooser);
gtk_editable_set_text (GTK_EDITABLE (chooser->search_entry), "");
}
static EmojiSection *
find_section (GtkEmojiChooser *chooser,
GtkWidget *box)
{
if (box == chooser->recent.box)
return &chooser->recent;
else if (box == chooser->people.box)
return &chooser->people;
else if (box == chooser->body.box)
return &chooser->body;
else if (box == chooser->nature.box)
return &chooser->nature;
else if (box == chooser->food.box)
return &chooser->food;
else if (box == chooser->travel.box)
return &chooser->travel;
else if (box == chooser->activities.box)
return &chooser->activities;
else if (box == chooser->objects.box)
return &chooser->objects;
else if (box == chooser->symbols.box)
return &chooser->symbols;
else if (box == chooser->flags.box)
return &chooser->flags;
else
return NULL;
}
static EmojiSection *
find_next_section (GtkEmojiChooser *chooser,
GtkWidget *box,
gboolean down)
{
EmojiSection *next;
if (box == chooser->recent.box)
next = down ? &chooser->people : NULL;
else if (box == chooser->people.box)
next = down ? &chooser->body : &chooser->recent;
else if (box == chooser->body.box)
next = down ? &chooser->nature : &chooser->people;
else if (box == chooser->nature.box)
next = down ? &chooser->food : &chooser->body;
else if (box == chooser->food.box)
next = down ? &chooser->travel : &chooser->nature;
else if (box == chooser->travel.box)
next = down ? &chooser->activities : &chooser->food;
else if (box == chooser->activities.box)
next = down ? &chooser->objects : &chooser->travel;
else if (box == chooser->objects.box)
next = down ? &chooser->symbols : &chooser->activities;
else if (box == chooser->symbols.box)
next = down ? &chooser->flags : &chooser->objects;
else if (box == chooser->flags.box)
next = down ? NULL : &chooser->symbols;
else
next = NULL;
return next;
}
static void
gtk_emoji_chooser_scroll_section (GtkWidget *widget,
const char *action_name,
GVariant *parameter)
{
GtkEmojiChooser *chooser = GTK_EMOJI_CHOOSER (widget);
int direction = g_variant_get_int32 (parameter);
GtkWidget *focus;
GtkWidget *box;
EmojiSection *next;
focus = gtk_root_get_focus (gtk_widget_get_root (widget));
if (focus == NULL)
return;
if (gtk_widget_is_ancestor (focus, chooser->search_entry))
box = chooser->recent.box;
else
box = gtk_widget_get_ancestor (focus, GTK_TYPE_FLOW_BOX);
next = find_next_section (chooser, box, direction > 0);
if (next)
{
gtk_widget_child_focus (next->box, GTK_DIR_TAB_FORWARD);
scroll_to_section (next);
}
}
static gboolean
keynav_failed (GtkWidget *box,
GtkDirectionType direction,
GtkEmojiChooser *chooser)
{
EmojiSection *next;
GtkWidget *focus;
GtkWidget *child;
GtkWidget *sibling;
int i;
int column;
int child_x;
graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0);
focus = gtk_root_get_focus (gtk_widget_get_root (box));
if (focus == NULL)
return FALSE;
child = gtk_widget_get_ancestor (focus, GTK_TYPE_EMOJI_CHOOSER_CHILD);
column = 0;
child_x = G_MAXINT;
for (sibling = gtk_widget_get_first_child (box);
sibling;
sibling = gtk_widget_get_next_sibling (sibling))
{
if (!gtk_widget_get_child_visible (sibling))
continue;
if (!gtk_widget_compute_bounds (sibling, box, &bounds))
graphene_rect_init (&bounds, 0, 0, 0, 0);
if (bounds.origin.x < child_x)
column = 0;
else
column++;
child_x = (int) bounds.origin.x;
if (sibling == child)
break;
}
if (direction == GTK_DIR_DOWN)
{
next = find_section (chooser, box);
while (TRUE)
{
next = find_next_section (chooser, next->box, TRUE);
if (next == NULL)
return FALSE;
i = 0;
child_x = G_MAXINT;
for (sibling = gtk_widget_get_first_child (next->box);
sibling;
sibling = gtk_widget_get_next_sibling (sibling))
{
if (!gtk_widget_get_child_visible (sibling))
continue;
if (!gtk_widget_compute_bounds (sibling, next->box, &bounds))
graphene_rect_init (&bounds, 0, 0, 0, 0);
if (bounds.origin.x < child_x)
i = 0;
else
i++;
child_x = (int) bounds.origin.x;
if (i == column)
{
gtk_widget_grab_focus (sibling);
return TRUE;
}
}
}
}
else if (direction == GTK_DIR_UP)
{
next = find_section (chooser, box);
while (TRUE)
{
next = find_next_section (chooser, next->box, FALSE);
if (next == NULL)
return FALSE;
i = 0;
child_x = G_MAXINT;
child = NULL;
for (sibling = gtk_widget_get_first_child (next->box);
sibling;
sibling = gtk_widget_get_next_sibling (sibling))
{
if (!gtk_widget_get_child_visible (sibling))
continue;
if (!gtk_widget_compute_bounds (sibling, next->box, &bounds))
graphene_rect_init (&bounds, 0, 0, 0, 0);
if (bounds.origin.x < child_x)
i = 0;
else
i++;
child_x = (int) bounds.origin.x;
if (i == column)
child = sibling;
}
if (child)
{
gtk_widget_grab_focus (child);
return TRUE;
}
}
}
return FALSE;
}
static void
gtk_emoji_chooser_map (GtkWidget *widget)
{
GtkEmojiChooser *chooser = GTK_EMOJI_CHOOSER (widget);
GTK_WIDGET_CLASS (gtk_emoji_chooser_parent_class)->map (widget);
gtk_widget_grab_focus (chooser->search_entry);
}
static void
gtk_emoji_chooser_class_init (GtkEmojiChooserClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->finalize = gtk_emoji_chooser_finalize;
object_class->dispose = gtk_emoji_chooser_dispose;
widget_class->show = gtk_emoji_chooser_show;
widget_class->map = gtk_emoji_chooser_map;
/**
* GtkEmojiChooser::emoji-picked:
* @chooser: the `GtkEmojiChooser`
* @text: the Unicode sequence for the picked Emoji, in UTF-8
*
* Emitted when the user selects an Emoji.
*/
signals[EMOJI_PICKED] = g_signal_new ("emoji-picked",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
NULL,
G_TYPE_NONE, 1, G_TYPE_STRING|G_SIGNAL_TYPE_STATIC_SCOPE);
gtk_widget_class_set_template_from_resource (widget_class, "/org/gtk/libgtk/ui/gtkemojichooser.ui");
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, search_entry);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, stack);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, scrolled_window);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, recent.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, recent.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, people.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, people.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, people.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, body.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, body.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, body.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, nature.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, nature.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, nature.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, food.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, food.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, food.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, travel.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, travel.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, travel.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, activities.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, activities.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, activities.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, objects.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, objects.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, objects.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, symbols.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, symbols.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, symbols.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, flags.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, flags.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, flags.button);
gtk_widget_class_bind_template_callback (widget_class, emoji_activated);
gtk_widget_class_bind_template_callback (widget_class, search_changed);
gtk_widget_class_bind_template_callback (widget_class, stop_search);
gtk_widget_class_bind_template_callback (widget_class, pressed_cb);
gtk_widget_class_bind_template_callback (widget_class, long_pressed_cb);
gtk_widget_class_bind_template_callback (widget_class, keynav_failed);
/**
* GtkEmojiChooser|scroll.section:
* @direction: 1 to scroll forward, -1 to scroll back
*
* Scrolls to the next or previous section.
*/
gtk_widget_class_install_action (widget_class, "scroll.section", "i",
gtk_emoji_chooser_scroll_section);
gtk_widget_class_add_binding_action (widget_class, GDK_KEY_n, GDK_CONTROL_MASK,
"scroll.section", "i", 1);
gtk_widget_class_add_binding_action (widget_class, GDK_KEY_p, GDK_CONTROL_MASK,
"scroll.section", "i", -1);
}
/**
* gtk_emoji_chooser_new:
*
* Creates a new `GtkEmojiChooser`.
*
* Returns: a new `GtkEmojiChooser`
*/
GtkWidget *
gtk_emoji_chooser_new (void)
{
return GTK_WIDGET (g_object_new (GTK_TYPE_EMOJI_CHOOSER, NULL));
}