talkatu/talkatu

Make the minimum glib and gtk versions match pidgin

2021-08-03, Gary Kramlich
81886219e64c
Make the minimum glib and gtk versions match pidgin

Testing Done:
compiled.

Reviewed at https://reviews.imfreedom.org/r/868/
/*
* Talkatu - GTK widgets for chat applications
* Copyright (C) 2017-2020 Gary Kramlich <grim@reaperworld.com>
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this library; if not, see <https://www.gnu.org/licenses/>.
*/
#include <glib/gi18n-lib.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <gumbo.h>
#include <stdio.h>
#include "talkatu/talkatuactiongroup.h"
#include "talkatu/talkatuattachment.h"
#include "talkatu/talkatuattachmentdialog.h"
#include "talkatu/talkatubuffer.h"
#include "talkatu/talkatumarkup.h"
#include "talkatu/talkatutag.h"
#include "talkatu/talkatuview.h"
/**
* SECTION:talkatuview
* @Title: Text View
* @Short_description: Widget that displays a TalkatuBuffer
*
* #TalkatuView handles the display of a #TalkatuBuffer, the keybindings for
* applying formats, as well as displaying links.
*/
/**
* TALKATU_TYPE_VIEW:
*
* The standard _get_type macro for #TalkatuView.
*/
/**
* TalkatuViewClass:
* @format_activate: The class handler for the #TalkatuView::format_activate
* signal.
* @open_url: The class handler for the #TalkatuView::open_url signal.
*
* The backing class to #TalkatuView instances.
*/
/**
* TalkatuView:
*
* A #GtkTextView subclass that's preconfigured with a #TalkatuBuffer.
*/
typedef struct {
GSimpleActionGroup *action_group;
/* we cache the cursor that's displayed while hovering over a link as well
* the tag for links/anchors to avoid extra lookups.
*/
GdkCursor *cursor_hand;
GtkTextTag *tag_anchor;
} TalkatuViewPrivate;
enum {
SIG_FORMAT_ACTIVATE,
SIG_OPEN_URL,
LAST_SIGNAL,
};
static guint signals[LAST_SIGNAL] = {0, };
G_DEFINE_TYPE_WITH_PRIVATE(TalkatuView, talkatu_view, GTK_TYPE_TEXT_VIEW)
/******************************************************************************
* Helpers
*****************************************************************************/
static gchar *
talkatu_view_url_from_iter(TalkatuView *view, GtkTextIter *iter) {
GSList *tag = NULL;
gchar *url = NULL;
tag = gtk_text_iter_get_tags(iter);
for(; tag != NULL; tag = g_slist_delete_link(tag, tag)) {
if(tag->data == NULL) {
continue;
}
url = g_object_get_data(G_OBJECT(tag->data), "talkatu-anchor-url");
if(url != NULL) {
break;
}
}
g_slist_free(tag);
return url;
}
/******************************************************************************
* Callbacks
*****************************************************************************/
static void
talkatu_view_open_url_cb(GtkMenuItem *item, gpointer data) {
TalkatuView *view = g_object_get_data(G_OBJECT(item), "view");
gchar *url = g_object_get_data(G_OBJECT(item), "url");
g_signal_emit(view, signals[SIG_OPEN_URL], 0, url);
}
static void
talkatu_view_copy_url_cb(GtkMenuItem *item, gpointer data) {
GtkClipboard *clipboard = gtk_widget_get_clipboard(
GTK_WIDGET(item),
GDK_SELECTION_CLIPBOARD
);
gtk_clipboard_set_text(clipboard, (gchar *)data, -1);
}
gboolean
talkatu_view_anchor_tag_event_cb(GtkTextTag *tag,
GObject *object,
GdkEvent *event,
GtkTextIter *iter,
gpointer data)
{
GdkEventType event_type = gdk_event_get_event_type(event);
if(event_type == GDK_BUTTON_PRESS) {
GdkEventButton *event_button = (GdkEventButton *)event;
/* the user is right clicking on a link so stop the default handler */
if(event_button->button == GDK_BUTTON_SECONDARY) {
return TRUE;
}
} else if(gdk_event_triggers_context_menu(event)) {
GdkEventButton *event_button = (GdkEventButton *)event;
TalkatuView *view = TALKATU_VIEW(object);
gchar *url;
url = talkatu_view_url_from_iter(view, iter);
/* if we didn't find a url, bail */
if(url == NULL) {
return FALSE;
}
if(event_button->button == GDK_BUTTON_PRIMARY) {
GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(view));
/* old behavior from pidgin2, if the users has something selected
* we don't open links. Other clients don't do this.. but it seems
* to be a work around for someone pressing a button over text,
* then moving the cursor to the link and then releasing. Without
* the selection check that'll cause that to open the link if the
* button is released in the middle of the link.
*/
if(gtk_text_buffer_get_has_selection(buffer)) {
return FALSE;
}
g_signal_emit(view, signals[SIG_OPEN_URL], 0, url);
return TRUE;
} else if(gdk_event_triggers_context_menu(event)) {
GtkWidget *menu = gtk_menu_new();
GtkWidget *item = NULL;
item = gtk_menu_item_new_with_label(_("Open Link"));
/* to make it easier to deal with the life cycle, we just add data
* to the menu item itself with destroy notifies.
*/
g_object_set_data_full(
G_OBJECT(item),
"view",
g_object_ref(view),
g_object_unref
);
g_object_set_data_full(
G_OBJECT(item),
"url",
g_strdup(url),
g_free
);
g_signal_connect(
G_OBJECT(item),
"activate",
G_CALLBACK(talkatu_view_open_url_cb),
NULL
);
gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
item = gtk_menu_item_new_with_label(_("Copy Link"));
g_signal_connect(
G_OBJECT(item),
"activate",
G_CALLBACK(talkatu_view_copy_url_cb),
url
);
gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
gtk_widget_show_all(menu);
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, 0, event_button->time);
G_GNUC_END_IGNORE_DEPRECATIONS
return TRUE;
}
}
return FALSE;
}
static void
talkatu_view_buffer_set_cb(GObject *view, GParamSpec *pspec, gpointer data) {
TalkatuViewPrivate *priv = talkatu_view_get_instance_private(TALKATU_VIEW(view));
GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(view));
GtkTextTagTable *table = gtk_text_buffer_get_tag_table(buffer);
if(TALKATU_IS_BUFFER(buffer)) {
priv->action_group = talkatu_buffer_get_action_group(TALKATU_BUFFER(buffer));
}
/* check for the anchor tag, if we have it, add a signal handler to it */
priv->tag_anchor = gtk_text_tag_table_lookup(table, TALKATU_TAG_ANCHOR);
if(priv->tag_anchor != NULL) {
g_signal_connect(
priv->tag_anchor,
"event",
G_CALLBACK(talkatu_view_anchor_tag_event_cb),
NULL
);
}
}
/******************************************************************************
* Default Signal Handlers
*****************************************************************************/
static void
talkatu_view_format_activate(TalkatuView *view, const gchar *action_name) {
TalkatuViewPrivate *priv = talkatu_view_get_instance_private(view);
if(priv->action_group) {
GAction *action = g_action_map_lookup_action(G_ACTION_MAP(priv->action_group), action_name);
if(action) {
g_action_activate(action, NULL);
}
}
}
static gboolean
talkatu_view_query_tooltip(GtkWidget *widget,
gint x,
gint y,
gboolean keyboard,
GtkTooltip *tooltip)
{
GtkTextIter iter;
gchar *url = NULL;
gint adj_x, adj_y;
if(keyboard) {
return GTK_WIDGET_CLASS(talkatu_view_parent_class)->query_tooltip(widget, x, y, keyboard, tooltip);
}
/* convert the window coordinates to match whats visible */
gtk_text_view_window_to_buffer_coords(
GTK_TEXT_VIEW(widget),
GTK_TEXT_WINDOW_TEXT,
x, y,
&adj_x, &adj_y
);
/* now find the iter for what we're at */
gtk_text_view_get_iter_at_location(
GTK_TEXT_VIEW(widget),
&iter,
adj_x,
adj_y
);
/* look for a url, if we have one, add it to tooltip */
url = talkatu_view_url_from_iter(TALKATU_VIEW(widget), &iter);
if(url != NULL) {
gtk_tooltip_set_text(tooltip, url);
return TRUE;
}
return GTK_WIDGET_CLASS(talkatu_view_parent_class)->query_tooltip(widget, x, y, keyboard, tooltip);
}
static gboolean
talkatu_view_motion_notify_event(GtkWidget *widget, GdkEventMotion *event) {
TalkatuViewPrivate *priv = talkatu_view_get_instance_private(TALKATU_VIEW(widget));
GtkTextIter iter;
GdkCursor *cursor = NULL;
gint x, y;
gtk_text_view_window_to_buffer_coords(
GTK_TEXT_VIEW(widget),
GTK_TEXT_WINDOW_TEXT,
event->x, event->y,
&x, &y
);
gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(widget), &iter, x, y);
if(gtk_text_iter_has_tag(&iter, priv->tag_anchor)) {
cursor = priv->cursor_hand;
}
if(cursor != gdk_window_get_cursor(event->window)) {
gdk_window_set_cursor(event->window, cursor);
return TRUE;
}
return GTK_WIDGET_CLASS(talkatu_view_parent_class)->motion_notify_event(widget, event);
}
/******************************************************************************
* GtkTextViewClass overrides
*****************************************************************************/
static GtkTextBuffer *
talkatu_view_create_buffer(GtkTextView *view) {
return talkatu_buffer_new(NULL);
}
/******************************************************************************
* GObject Stuff
*****************************************************************************/
static void
talkatu_view_finalize(GObject *obj) {
TalkatuViewPrivate *priv = talkatu_view_get_instance_private(TALKATU_VIEW(obj));
g_clear_object(&priv->cursor_hand);
G_OBJECT_CLASS(talkatu_view_parent_class)->finalize(obj);
}
static void
talkatu_view_init(TalkatuView *view) {
TalkatuViewPrivate *priv = talkatu_view_get_instance_private(view);
priv->cursor_hand = gdk_cursor_new_from_name(gdk_display_get_default(), "pointer");
/* tell the widget class that we support tooltips. This is used to show
* link targets, and probably other stuff at some point.
*/
gtk_widget_set_has_tooltip(GTK_WIDGET(view), TRUE);
/* set our event mask for the signals we care about */
gtk_widget_set_events(
GTK_WIDGET(view),
GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK
);
/* we need to know when the buffer is changed in our parent so we can
* update our actions and other stuff.
*/
g_signal_connect(
G_OBJECT(view),
"notify::buffer",
G_CALLBACK(talkatu_view_buffer_set_cb),
NULL
);
}
static void
talkatu_view_class_init(TalkatuViewClass *klass) {
GObjectClass *obj_class = G_OBJECT_CLASS(klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(klass);
GtkTextViewClass *text_view_class = GTK_TEXT_VIEW_CLASS(klass);
GtkBindingSet *binding_set = NULL;
obj_class->finalize = talkatu_view_finalize;
widget_class->motion_notify_event = talkatu_view_motion_notify_event;
widget_class->query_tooltip = talkatu_view_query_tooltip;
text_view_class->create_buffer = talkatu_view_create_buffer;
/* add our default signal handlers */
klass->format_activate = talkatu_view_format_activate;
/* add our signals */
/**
* TalkatuView::format-activate
* @talkatutextview: The #TalkatuView instance.
* @arg1: The name of the action to activated.
* @user_data: User supplied data.
*
* Emitted by the keybindings to apply a format to the underlying buffer.
*/
signals[SIG_FORMAT_ACTIVATE] = g_signal_new(
"format-activate",
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET(TalkatuViewClass, format_activate),
NULL,
NULL,
NULL,
G_TYPE_NONE,
1,
G_TYPE_STRING
);
/**
* TalkatuView::open-url:
* @talkatutextview: The #TalkatuView instances.
* @url: The URL to open.
* @user_data: User supplied data.
*
* Emitted when a user clicks on a link to open the url
*/
signals[SIG_OPEN_URL] = g_signal_new(
"open-url",
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET(TalkatuViewClass, open_url),
NULL,
NULL,
NULL,
G_TYPE_NONE,
1,
G_TYPE_STRING
);
/* setup key bindings */
binding_set = gtk_binding_set_by_class(talkatu_view_parent_class);
/* remove existing keybindings that we're overriding */
gtk_binding_entry_remove(binding_set, GDK_KEY_slash, GDK_CONTROL_MASK);
/* add our custom keybindings */
gtk_binding_entry_add_signal(binding_set, GDK_KEY_b, GDK_CONTROL_MASK, "format-activate", 1, G_TYPE_STRING, TALKATU_ACTION_FORMAT_BOLD);
gtk_binding_entry_add_signal(binding_set, GDK_KEY_i, GDK_CONTROL_MASK, "format-activate", 1, G_TYPE_STRING, TALKATU_ACTION_FORMAT_ITALIC);
gtk_binding_entry_add_signal(binding_set, GDK_KEY_u, GDK_CONTROL_MASK, "format-activate", 1, G_TYPE_STRING, TALKATU_ACTION_FORMAT_UNDERLINE);
gtk_binding_entry_add_signal(binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "format-activate", 1, G_TYPE_STRING, TALKATU_ACTION_FORMAT_STRIKETHROUGH);
gtk_binding_entry_add_signal(binding_set, GDK_KEY_plus, GDK_CONTROL_MASK, "format-activate", 1, G_TYPE_STRING, TALKATU_ACTION_FORMAT_GROW);
gtk_binding_entry_add_signal(binding_set, GDK_KEY_equal, GDK_CONTROL_MASK, "format-activate", 1, G_TYPE_STRING, TALKATU_ACTION_FORMAT_GROW);
gtk_binding_entry_add_signal(binding_set, GDK_KEY_minus, GDK_CONTROL_MASK, "format-activate", 1, G_TYPE_STRING, TALKATU_ACTION_FORMAT_SHRINK);
gtk_binding_entry_add_signal(binding_set, GDK_KEY_r, GDK_CONTROL_MASK, "format-activate", 1, G_TYPE_STRING, TALKATU_ACTION_FORMAT_RESET);
gtk_binding_entry_add_signal(binding_set, GDK_KEY_Insert, GDK_MOD1_MASK | GDK_SHIFT_MASK, "insert-at-cursor", 1, G_TYPE_STRING, "🐣");
}
/******************************************************************************
* Public API
*****************************************************************************/
/**
* talkatu_view_new:
*
* Creates a new #TalkatuView with a #TalkatuBuffer.
*
* Returns: (transfer full): The new #TalkatuView.
*/
GtkWidget *talkatu_view_new(void) {
return talkatu_view_new_with_buffer(talkatu_buffer_new(NULL));
}
/**
* talkatu_view_new_with_buffer:
* @buffer: A #GtkTextBuffer.
*
* Creates a new #TalkatuView with @buffer.
*
* Returns: (transfer full): The new #TalkatuView.
*/
GtkWidget *talkatu_view_new_with_buffer(GtkTextBuffer *buffer) {
return GTK_WIDGET(g_object_new(
TALKATU_TYPE_VIEW,
"buffer", buffer,
NULL));
}