talkatu/talkatu

Move TalkatuHistory from a GtkTextView base to GtkListBox

2020-08-19, Gary Kramlich
bf428b4a68da
Move TalkatuHistory from a GtkTextView base to GtkListBox

Make TalkatuInput return the local time if a timestamp has not yet been set.

Add an toggle button for setting the message's edited state

Added TalkatuHistoryRow which is what will be used to display message

Add TalkatuHistoryRow to the documentation.

Add TalkatuScrolledWindow that subclasses GtkScrolledWindow but autoscrolls and has keybindings callbacks for page up and page down.

Testing Done:
Compile, docs, and manual testing in the demo. The i18n stuff is broken for unrelated reasons, which I'll fix in another review request.

Bugs closed: TALKATU-78

Reviewed at https://reviews.imfreedom.org/r/56/
/*
* talkatu
* 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 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 <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);
}
}