talkatu/talkatu
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Fix a bunch of stuff found in review
2020-05-21, Gary Kramlich
6e59a2a1971e
Fix a bunch of stuff found in review
/*
* 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/talkatuhistory.h>
#include
<talkatu/talkatuattachmentpreview.h>
#include
<talkatu/talkatuhistorybuffer.h>
#include
<talkatu/talkatumessage.h>
/**
* SECTION:talkatuhistory
* @Title: History View
* @Short_description: Chat history widget
*
* This widget is used to display the conversation history. It doesn't care if
* it is multi user or one to one.
*/
/**
* TALKATU_TYPE_HISTORY:
*
* The standard _get_type macro for #TalkatuHistory.
*/
/**
* TalkatuHistory:
*
* A #TalkatuView subclass that is used to display a conversation.
*/
struct
_TalkatuHistory
{
TalkatuView
parent
;
GtkAdjustment
*
vadjustment
;
gboolean
auto_scroll
;
};
G_DEFINE_TYPE
(
TalkatuHistory
,
talkatu_history
,
TALKATU_TYPE_VIEW
)
/******************************************************************************
* Callbacks
*****************************************************************************/
static
void
talkatu_history_vadjustment_changed_cb
(
GtkAdjustment
*
adjustment
,
gpointer
data
)
{
TalkatuHistory
*
history
=
TALKATU_HISTORY
(
data
);
if
(
history
->
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_history_vadjustment_value_changed_cb
(
GtkAdjustment
*
adjustment
,
gpointer
data
)
{
TalkatuHistory
*
history
=
TALKATU_HISTORY
(
data
);
gdouble
current
,
upper
,
pagesize
;
current
=
gtk_adjustment_get_value
(
adjustment
);
upper
=
gtk_adjustment_get_upper
(
adjustment
);
pagesize
=
gtk_adjustment_get_page_size
(
adjustment
);
history
->
auto_scroll
=
(
current
+
pagesize
>=
upper
);
}
static
void
talkatu_history_vadjustment_notify_cb
(
GObject
*
obj
,
GParamSpec
*
pspec
,
gpointer
data
)
{
TalkatuHistory
*
history
=
TALKATU_HISTORY
(
obj
);
GtkAdjustment
*
adjustment
=
NULL
;
adjustment
=
gtk_scrollable_get_vadjustment
(
GTK_SCROLLABLE
(
obj
));
if
(
g_set_object
(
&
history
->
vadjustment
,
adjustment
))
{
history
->
auto_scroll
=
TRUE
;
g_signal_connect
(
G_OBJECT
(
adjustment
),
"value-changed"
,
G_CALLBACK
(
talkatu_history_vadjustment_value_changed_cb
),
history
);
g_signal_connect
(
G_OBJECT
(
adjustment
),
"changed"
,
G_CALLBACK
(
talkatu_history_vadjustment_changed_cb
),
history
);
}
}
static
void
talkatu_history_insert_child_anchor_cb
(
GtkTextBuffer
*
buffer
,
GtkTextIter
*
iter
,
GtkTextChildAnchor
*
anchor
,
gpointer
data
)
{
TalkatuAttachment
*
attachment
=
NULL
;
GtkTextView
*
view
=
GTK_TEXT_VIEW
(
data
);
attachment
=
g_object_get_data
(
G_OBJECT
(
anchor
),
"talkatu:attachment"
);
if
(
TALKATU_IS_ATTACHMENT
(
attachment
))
{
GtkWidget
*
preview
=
talkatu_attachment_preview_new
(
attachment
);
gtk_text_view_add_child_at_anchor
(
view
,
preview
,
anchor
);
gtk_widget_show
(
preview
);
}
}
static
void
talkatu_history_buffer_set_cb
(
GObject
*
view
,
GParamSpec
*
pspec
,
gpointer
data
)
{
GtkTextBuffer
*
buffer
=
gtk_text_view_get_buffer
(
GTK_TEXT_VIEW
(
view
));
g_signal_handlers_disconnect_by_func
(
G_OBJECT
(
buffer
),
G_CALLBACK
(
talkatu_history_insert_child_anchor_cb
),
view
);
g_signal_connect_after
(
G_OBJECT
(
buffer
),
"insert-child-anchor"
,
G_CALLBACK
(
talkatu_history_insert_child_anchor_cb
),
view
);
}
/******************************************************************************
* GtkTextViewClass overrides
*****************************************************************************/
static
GtkTextBuffer
*
talkatu_history_create_buffer
(
GtkTextView
*
view
)
{
return
talkatu_history_buffer_new
();
}
/******************************************************************************
* GObject Stuff
*****************************************************************************/
static
void
talkatu_history_init
(
TalkatuHistory
*
history
)
{
gtk_text_view_set_editable
(
GTK_TEXT_VIEW
(
history
),
FALSE
);
gtk_text_view_set_cursor_visible
(
GTK_TEXT_VIEW
(
history
),
FALSE
);
g_signal_connect
(
G_OBJECT
(
history
),
"notify::buffer"
,
G_CALLBACK
(
talkatu_history_buffer_set_cb
),
NULL
);
history
->
auto_scroll
=
TRUE
;
g_signal_connect
(
G_OBJECT
(
history
),
"notify::vadjustment"
,
G_CALLBACK
(
talkatu_history_vadjustment_notify_cb
),
NULL
);
}
static
void
talkatu_history_finalize
(
GObject
*
obj
)
{
TalkatuHistory
*
history
=
TALKATU_HISTORY
(
obj
);
g_clear_object
(
&
history
->
vadjustment
);
G_OBJECT_CLASS
(
talkatu_history_parent_class
)
->
finalize
(
obj
);
}
static
void
talkatu_history_class_init
(
TalkatuHistoryClass
*
klass
)
{
GObjectClass
*
obj_class
=
G_OBJECT_CLASS
(
klass
);
GtkTextViewClass
*
text_view_class
=
GTK_TEXT_VIEW_CLASS
(
klass
);
obj_class
->
finalize
=
talkatu_history_finalize
;
text_view_class
->
create_buffer
=
talkatu_history_create_buffer
;
}
/******************************************************************************
* Public API
*****************************************************************************/
/**
* talkatu_history_new:
*
* Creates a new #TalkatuHistory for displaying chat history.
*
* Returns: (transfer full): The new #TalkatuHistory instance.
*/
GtkWidget
*
talkatu_history_new
(
void
)
{
return
GTK_WIDGET
(
g_object_new
(
TALKATU_TYPE_HISTORY
,
NULL
));
}
/**
* talkatu_history_page_up:
* @history: The #TalkatuHistory instance.
*
* Scrolls @history up one page.
*/
void
talkatu_history_page_up
(
TalkatuHistory
*
history
)
{
g_return_if_fail
(
TALKATU_IS_HISTORY
(
history
));
if
(
history
->
vadjustment
!=
NULL
)
{
double
value
=
0.0
;
value
=
gtk_adjustment_get_value
(
history
->
vadjustment
);
value
-=
gtk_adjustment_get_page_increment
(
history
->
vadjustment
);
gtk_adjustment_set_value
(
history
->
vadjustment
,
value
);
}
}
/**
* talkatu_history_page_down:
* @history: The #TalkatuHistory instance.
*
* Scrolls @history down one page.
*/
void
talkatu_history_page_down
(
TalkatuHistory
*
history
)
{
g_return_if_fail
(
TALKATU_IS_HISTORY
(
history
));
if
(
history
->
vadjustment
!=
NULL
)
{
double
value
=
0.0
;
value
=
gtk_adjustment_get_value
(
history
->
vadjustment
);
value
+=
gtk_adjustment_get_page_increment
(
history
->
vadjustment
);
gtk_adjustment_set_value
(
history
->
vadjustment
,
value
);
}
}