talkatu/talkatu

Add a devenv that setups up the glade catalog

2021-10-14, Gary Kramlich
803afd860d6f
Add a devenv that setups up the glade catalog

Testing Done:
ran `meson devenv glade` and verified the catalog was loaded properly.

Reviewed at https://reviews.imfreedom.org/r/1045/
/*
* 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 <gtk/gtk.h>
#include <talkatu/talkatuscrolledwindow.h>
/**
* SECTION:talkatuscrolledwindow
* @Title: Enhanced Scrolled Window
* @Short_description: An enhanced GtkScrolledWindow
*
* This widget is a simple subclass of #GtkScrolledWindow that has helpers for
* keyboard navigation as well as the ability to automatically scroll to the end
* when new items are added if the widget was already scrolled all the way to
* the bottom.
*/
/**
* TALKATU_TYPE_SCROLLED_WINDOW:
*
* The standard _get_type macro for #TalkatuScrolledWindow.
*/
/**
* TalkatuScrolledWindow:
*
* An enhanced #GtkScrolledWindow subclass.
*/
struct _TalkatuScrolledWindow {
GtkScrolledWindow parent;
GtkAdjustment *vadjustment;
gboolean auto_scroll;
};
G_DEFINE_TYPE(TalkatuScrolledWindow, talkatu_scrolled_window,
GTK_TYPE_SCROLLED_WINDOW)
/******************************************************************************
* Callbacks
*****************************************************************************/
static void
talkatu_scrolled_window_vadjustment_changed_cb(GtkAdjustment *adjustment,
gpointer data)
{
TalkatuScrolledWindow *sw = TALKATU_SCROLLED_WINDOW(data);
if(sw->auto_scroll) {
gdouble upper, pagesize;
upper = gtk_adjustment_get_upper(adjustment);
pagesize = gtk_adjustment_get_page_size(adjustment);
gtk_adjustment_set_value(adjustment, upper - pagesize);
}
}
static void
talkatu_scrolled_window_vadjustment_value_changed_cb(GtkAdjustment *adjustment,
gpointer data)
{
TalkatuScrolledWindow *sw = TALKATU_SCROLLED_WINDOW(data);
gdouble current, upper, pagesize;
current = gtk_adjustment_get_value(adjustment);
upper = gtk_adjustment_get_upper(adjustment);
pagesize = gtk_adjustment_get_page_size(adjustment);
sw->auto_scroll = (current + pagesize >= upper);
}
static void
talkatu_scrolled_window_vadjustment_notify_cb(GObject *obj, GParamSpec *pspec,
gpointer data)
{
TalkatuScrolledWindow *sw = TALKATU_SCROLLED_WINDOW(obj);
GtkAdjustment *adjustment = NULL;
adjustment = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(obj));
if(g_set_object(&sw->vadjustment, adjustment)) {
sw->auto_scroll = TRUE;
g_signal_connect(G_OBJECT(adjustment), "value-changed",
G_CALLBACK(talkatu_scrolled_window_vadjustment_value_changed_cb),
sw);
g_signal_connect(G_OBJECT(adjustment), "changed",
G_CALLBACK(talkatu_scrolled_window_vadjustment_changed_cb),
sw);
}
}
/******************************************************************************
* GObject Stuff
*****************************************************************************/
static void
talkatu_scrolled_window_init(TalkatuScrolledWindow *sw) {
sw->auto_scroll = TRUE;
g_signal_connect(G_OBJECT(sw), "notify::vadjustment",
G_CALLBACK(talkatu_scrolled_window_vadjustment_notify_cb),
NULL);
}
static void
talkatu_scrolled_window_finalize(GObject *obj) {
TalkatuScrolledWindow *sw = TALKATU_SCROLLED_WINDOW(obj);
g_clear_object(&sw->vadjustment);
G_OBJECT_CLASS(talkatu_scrolled_window_parent_class)->finalize(obj);
}
static void
talkatu_scrolled_window_class_init(TalkatuScrolledWindowClass *klass) {
GObjectClass *obj_class = G_OBJECT_CLASS(klass);
obj_class->finalize = talkatu_scrolled_window_finalize;
}
/******************************************************************************
* Public API
*****************************************************************************/
/**
* talkatu_scrolled_window_new:
* @hadjustment: The GtkAdjustment for the horizontal position.
* @vadjustment: The GtkAdjustment for the vertical position.
*
* Creates a new #TalkatuScrolledWindow.
*
* Returns: (transfer full): The new #TalkatuScrolledWindow instance.
*/
GtkWidget *talkatu_scrolled_window_new(GtkAdjustment *hadjustment,
GtkAdjustment *vadjustment)
{
return GTK_WIDGET(g_object_new(
TALKATU_TYPE_SCROLLED_WINDOW,
"hadjustment", hadjustment,
"vadjustment", vadjustment,
NULL
));
}
/**
* talkatu_scrolled_window_page_up:
* @sw: The #TalkatuScrolledWindow instance.
*
* Scrolls @sw up one page.
*/
void
talkatu_scrolled_window_page_up(TalkatuScrolledWindow *sw) {
g_return_if_fail(TALKATU_IS_SCROLLED_WINDOW(sw));
if(sw->vadjustment != NULL) {
double value = 0.0;
value = gtk_adjustment_get_value(sw->vadjustment);
value -= gtk_adjustment_get_page_increment(sw->vadjustment);
gtk_adjustment_set_value(sw->vadjustment, value);
}
}
/**
* talkatu_scrolled_window_page_down:
* @sw: The #TalkatuScrolledWindow instance.
*
* Scrolls @sw down one page.
*/
void
talkatu_scrolled_window_page_down(TalkatuScrolledWindow *sw) {
g_return_if_fail(TALKATU_IS_SCROLLED_WINDOW(sw));
if(sw->vadjustment != NULL) {
double value = 0.0;
value = gtk_adjustment_get_value(sw->vadjustment);
value += gtk_adjustment_get_page_increment(sw->vadjustment);
gtk_adjustment_set_value(sw->vadjustment, value);
}
}