AuroraMiddleware/gtk
1
0
Fork 1
mirror of https://gitlab.gnome.org/GNOME/gtk.git synced 2024-11-08 17:50:10 +00:00
Code Issues Projects Releases Wiki Activity

textview: use GtkTextViewChild for border and overlay children

Browse Source 
This creates a new GtkTextViewChild that can manage overlay children at
given x,y offsets in buffer coordinates. This simplifies GtkTextView by
extracting this from GtkTextWindow as well as providing a real widget for
the borders.

With this change, we also rename gtk_text_view_add_child_in_window() to
gtk_text_view_add_overlay(). For those that were using
GTK_TEXT_WINDOW_WIDGET, they can use a GtkOverlay. It does not appear
that anyone was using GTK_TEXT_WINDOW_(LEFT|RIGHT|TOP|BOTTOM) for widgets
in this fashion, but that can be done by setting a gutter widget with
gtk_text_view_set_gutter(). We can make GtkTextViewChild public if
necessary to simplify this should it become necessary.

GtkTextViewChild will setup a CSS node of either "text" or "border"
depending on the GtkTextWindowType.

The old GtkTextViewChild has been renamed to AnchoredChild as it is only
used for widgets with anchors in the GtkTextBuffer. This also removes the
use of allocated GSList and instead embeds a GQueue and GList to save a
few extraneous allocations.
This commit is contained in:
Christian Hergert 2019-10-03 19:21:45 -07:00
parent 8373cc6c47
commit fea2a82ef6
9 changed files with 1094 additions and 747 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
docs/reference/gtk/gtk4-sections.txt
View File

@ -3085,8 +3085,10 @@ GtkTextChildAnchor
gtk_text_child_anchor_new
gtk_text_child_anchor_get_widgets
gtk_text_child_anchor_get_deleted
gtk_text_view_add_child_in_window
gtk_text_view_move_child
gtk_text_view_get_gutter
gtk_text_view_set_gutter
gtk_text_view_add_overlay
gtk_text_view_move_overlay
gtk_text_view_set_wrap_mode
gtk_text_view_get_wrap_mode
gtk_text_view_set_editable

17
gtk/gtktextutil.c
View File

@ -158,6 +158,19 @@ set_attributes_from_style (GtkStyleContext *context,
gtk_style_context_get (context, "font", &values->font, NULL);
}
static gint
get_border_window_size (GtkTextView *text_view,
GtkTextWindowType window_type)
{
GtkWidget *gutter;
gutter = gtk_text_view_get_gutter (text_view, window_type);
if (gutter != NULL)
return gtk_widget_get_width (gutter);
return 0;
}
GdkPaintable *
gtk_text_util_create_rich_drag_icon (GtkWidget *widget,
GtkTextBuffer *buffer,
@ -208,8 +221,8 @@ gtk_text_util_create_rich_drag_icon (GtkWidget *widget,
if (GTK_IS_TEXT_VIEW (widget))
{
layout_width = layout_width
- gtk_text_view_get_border_window_size (GTK_TEXT_VIEW (widget), GTK_TEXT_WINDOW_LEFT)
- gtk_text_view_get_border_window_size (GTK_TEXT_VIEW (widget), GTK_TEXT_WINDOW_RIGHT);
- get_border_window_size (GTK_TEXT_VIEW (widget), GTK_TEXT_WINDOW_LEFT)
- get_border_window_size (GTK_TEXT_VIEW (widget), GTK_TEXT_WINDOW_RIGHT);
}
style->direction = gtk_widget_get_direction (widget);

1183
gtk/gtktextview.c
View File

File diff suppressed because it is too large Load Diff

44
gtk/gtktextview.h
View File

@ -44,7 +44,6 @@ G_BEGIN_DECLS
/**
* GtkTextWindowType:
* @GTK_TEXT_WINDOW_PRIVATE: Private value, used internally
* @GTK_TEXT_WINDOW_WIDGET: Window that floats over scrolling areas.
* @GTK_TEXT_WINDOW_TEXT: Scrollable text window.
* @GTK_TEXT_WINDOW_LEFT: Left side border window.
@ -56,8 +55,7 @@ G_BEGIN_DECLS
*/
typedef enum
{
GTK_TEXT_WINDOW_PRIVATE,
GTK_TEXT_WINDOW_WIDGET,
GTK_TEXT_WINDOW_WIDGET = 1,
GTK_TEXT_WINDOW_TEXT,
GTK_TEXT_WINDOW_LEFT,
GTK_TEXT_WINDOW_RIGHT,
@ -280,14 +278,6 @@ void gtk_text_view_window_to_buffer_coords (GtkTextView *text_view,
gint *buffer_x,
gint *buffer_y);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_border_window_size (GtkTextView *text_view,
GtkTextWindowType type,
gint size);
GDK_AVAILABLE_IN_ALL
gint gtk_text_view_get_border_window_size (GtkTextView *text_view,
GtkTextWindowType type);
GDK_AVAILABLE_IN_ALL
gboolean gtk_text_view_forward_display_line (GtkTextView *text_view,
GtkTextIter *iter);
@ -316,24 +306,28 @@ void gtk_text_view_reset_im_context (GtkTextView
/* Adding child widgets */
GDK_AVAILABLE_IN_ALL
void gtk_text_view_add_child_at_anchor (GtkTextView *text_view,
GtkWidget *child,
GtkTextChildAnchor *anchor);
GtkWidget *gtk_text_view_get_gutter (GtkTextView *text_view,
GtkTextWindowType win);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_set_gutter (GtkTextView *text_view,
GtkTextWindowType win,
GtkWidget *widget);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_add_child_at_anchor (GtkTextView *text_view,
GtkWidget *child,
GtkTextChildAnchor *anchor);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_add_child_in_window (GtkTextView *text_view,
GtkWidget *child,
GtkTextWindowType which_window,
/* window coordinates */
gint xpos,
gint ypos);
void gtk_text_view_add_overlay (GtkTextView *text_view,
GtkWidget *child,
gint xpos,
gint ypos);
GDK_AVAILABLE_IN_ALL
void gtk_text_view_move_child (GtkTextView *text_view,
GtkWidget *child,
/* window coordinates */
gint xpos,
gint ypos);
void gtk_text_view_move_overlay (GtkTextView *text_view,
GtkWidget *child,
gint xpos,
gint ypos);
/* Default style settings (fallbacks if no tag affects the property) */

516
gtk/gtktextviewchild.c Normal file
View File

@ -0,0 +1,516 @@
/* -*- Mode: C; c-file-style: "gnu"; tab-width: 8 -*- */
/* GTK - The GIMP Toolkit
* gtk_text_view_child.c Copyright (C) 2019 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 "gtkcssnodeprivate.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkstylecontext.h"
#include "gtktextview.h"
#include "gtktextviewchildprivate.h"
#include "gtktypebuiltins.h"
#include "gtkwidgetprivate.h"
typedef struct
{
GList link;
GtkWidget *widget;
int x;
int y;
} Overlay;
struct _GtkTextViewChild
{
GtkContainer parent_instance;
GtkTextWindowType window_type;
GQueue overlays;
int xoffset;
int yoffset;
GtkWidget *child;
};
enum {
PROP_0,
PROP_WINDOW_TYPE,
N_PROPS
};
G_DEFINE_TYPE (GtkTextViewChild, gtk_text_view_child, GTK_TYPE_CONTAINER)
static GParamSpec *properties[N_PROPS];
static Overlay *
overlay_new (GtkWidget *widget,
int x,
int y)
{
Overlay *overlay;
overlay = g_slice_new0 (Overlay);
overlay->link.data = overlay;
overlay->widget = g_object_ref (widget);
overlay->x = x;
overlay->y = y;
return overlay;
}
static void
overlay_free (Overlay *overlay)
{
g_assert (overlay->link.prev == NULL);
g_assert (overlay->link.next == NULL);
g_object_unref (overlay->widget);
g_slice_free (Overlay, overlay);
}
static void
gtk_text_view_child_remove_overlay (GtkTextViewChild *self,
Overlay *overlay)
{
g_queue_unlink (&self->overlays, &overlay->link);
gtk_widget_unparent (overlay->widget);
overlay_free (overlay);
}
static Overlay *
gtk_text_view_child_get_overlay (GtkTextViewChild *self,
GtkWidget *widget)
{
GList *iter;
for (iter = self->overlays.head; iter; iter = iter->next)
{
Overlay *overlay = iter->data;
if (overlay->widget == widget)
return overlay;
}
return NULL;
}
static void
gtk_text_view_child_add (GtkContainer *container,
GtkWidget *widget)
{
GtkTextViewChild *self = GTK_TEXT_VIEW_CHILD (container);
if (self->child != NULL)
{
g_warning ("%s allows a single child and already contains a %s",
G_OBJECT_TYPE_NAME (self),
G_OBJECT_TYPE_NAME (widget));
return;
}
self->child = g_object_ref (widget);
gtk_widget_set_parent (widget, GTK_WIDGET (self));
}
static void
gtk_text_view_child_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkTextViewChild *self = GTK_TEXT_VIEW_CHILD (container);
if (widget == self->child)
{
self->child = NULL;
gtk_widget_unparent (widget);
g_object_unref (widget);
}
else
{
Overlay *overlay = gtk_text_view_child_get_overlay (self, widget);
if (overlay != NULL)
gtk_text_view_child_remove_overlay (self, overlay);
}
}
static void
gtk_text_view_child_forall (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
GtkTextViewChild *self = GTK_TEXT_VIEW_CHILD (container);
const GList *iter;
if (self->child != NULL)
callback (self->child, callback_data);
iter = self->overlays.head;
while (iter != NULL)
{
Overlay *overlay = iter->data;
iter = iter->next;
callback (overlay->widget, callback_data);
}
}
static void
gtk_text_view_child_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *min_size,
int *nat_size,
int *min_baseline,
int *nat_baseline)
{
GtkTextViewChild *self = GTK_TEXT_VIEW_CHILD (widget);
const GList *iter;
int real_min_size = 0;
int real_nat_size = 0;
if (self->child != NULL)
gtk_widget_measure (self->child,
orientation,
for_size,
&real_min_size,
&real_nat_size,
NULL,
NULL);
for (iter = self->overlays.head; iter; iter = iter->next)
{
Overlay *overlay = iter->data;
int child_min_size = 0;
int child_nat_size = 0;
gtk_widget_measure (overlay->widget,
orientation,
for_size,
&child_min_size,
&child_nat_size,
NULL,
NULL);
if (child_min_size > real_min_size)
real_min_size = child_min_size;
if (child_nat_size > real_nat_size)
real_nat_size = child_nat_size;
}
if (min_size)
*min_size = real_min_size;
if (nat_size)
*nat_size = real_nat_size;
if (min_baseline)
*min_baseline = -1;
if (nat_baseline)
*nat_baseline = -1;
}
static void
gtk_text_view_child_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline)
{
GtkTextViewChild *self = GTK_TEXT_VIEW_CHILD (widget);
GtkRequisition min_req;
GdkRectangle rect;
const GList *iter;
GTK_WIDGET_CLASS (gtk_text_view_child_parent_class)->size_allocate (widget, width, height, baseline);
if (self->child != NULL)
{
rect.x = 0;
rect.y = 0;
rect.width = width;
rect.height = height;
gtk_widget_size_allocate (self->child, &rect, baseline);
}
for (iter = self->overlays.head; iter; iter = iter->next)
{
Overlay *overlay = iter->data;
gtk_widget_get_preferred_size (overlay->widget, &min_req, NULL);
rect.width = min_req.width;
rect.height = min_req.height;
if (self->window_type == GTK_TEXT_WINDOW_TEXT ||
self->window_type == GTK_TEXT_WINDOW_TOP ||
self->window_type == GTK_TEXT_WINDOW_BOTTOM)
rect.x = overlay->x - self->xoffset;
else
rect.x = overlay->x;
if (self->window_type == GTK_TEXT_WINDOW_TEXT ||
self->window_type == GTK_TEXT_WINDOW_RIGHT ||
self->window_type == GTK_TEXT_WINDOW_LEFT)
rect.y = overlay->y - self->yoffset;
else
rect.y = overlay->y;
gtk_widget_size_allocate (overlay->widget, &rect, -1);
}
}
static void
gtk_text_view_child_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GtkTextViewChild *self = GTK_TEXT_VIEW_CHILD (widget);
const GList *iter;
GTK_WIDGET_CLASS (gtk_text_view_child_parent_class)->snapshot (widget, snapshot);
if (self->child)
gtk_widget_snapshot_child (widget, self->child, snapshot);
for (iter = self->overlays.head; iter; iter = iter->next)
{
Overlay *overlay = iter->data;
gtk_widget_snapshot_child (widget, overlay->widget, snapshot);
}
}
static void
gtk_text_view_child_constructed (GObject *object)
{
GtkTextViewChild *self = GTK_TEXT_VIEW_CHILD (object);
GtkCssNode *css_node;
G_OBJECT_CLASS (gtk_text_view_child_parent_class)->constructed (object);
css_node = gtk_widget_get_css_node (GTK_WIDGET (self));
switch (self->window_type)
{
case GTK_TEXT_WINDOW_LEFT:
gtk_css_node_set_name (css_node, "border");
gtk_css_node_add_class (css_node, g_quark_from_static_string (GTK_STYLE_CLASS_LEFT));
break;
case GTK_TEXT_WINDOW_RIGHT:
gtk_css_node_set_name (css_node, "border");
gtk_css_node_add_class (css_node, g_quark_from_static_string (GTK_STYLE_CLASS_RIGHT));
break;
case GTK_TEXT_WINDOW_TOP:
gtk_css_node_set_name (css_node, "border");
gtk_css_node_add_class (css_node, g_quark_from_static_string (GTK_STYLE_CLASS_TOP));
break;
case GTK_TEXT_WINDOW_BOTTOM:
gtk_css_node_set_name (css_node, "border");
gtk_css_node_add_class (css_node, g_quark_from_static_string (GTK_STYLE_CLASS_BOTTOM));
break;
case GTK_TEXT_WINDOW_TEXT:
gtk_css_node_set_name (css_node, "text");
break;
case GTK_TEXT_WINDOW_WIDGET:
default:
break;
}
}
static void
gtk_text_view_child_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkTextViewChild *self = GTK_TEXT_VIEW_CHILD (object);
switch (prop_id)
{
case PROP_WINDOW_TYPE:
g_value_set_enum (value, self->window_type);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gtk_text_view_child_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkTextViewChild *self = GTK_TEXT_VIEW_CHILD (object);
switch (prop_id)
{
case PROP_WINDOW_TYPE:
self->window_type = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
gtk_text_view_child_class_init (GtkTextViewChildClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
object_class->constructed = gtk_text_view_child_constructed;
object_class->get_property = gtk_text_view_child_get_property;
object_class->set_property = gtk_text_view_child_set_property;
widget_class->measure = gtk_text_view_child_measure;
widget_class->size_allocate = gtk_text_view_child_size_allocate;
widget_class->snapshot = gtk_text_view_child_snapshot;
container_class->add = gtk_text_view_child_add;
container_class->remove = gtk_text_view_child_remove;
container_class->forall = gtk_text_view_child_forall;
/**
* GtkTextViewChild:window-type:
*
* The "window-type" property is the #GtkTextWindowType of the
* #GtkTextView that the child is attached.
*/
properties[PROP_WINDOW_TYPE] =
g_param_spec_enum ("window-type",
P_("Window Type"),
P_("The GtkTextWindowType"),
GTK_TYPE_TEXT_WINDOW_TYPE,
GTK_TEXT_WINDOW_TEXT,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY|G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (object_class, N_PROPS, properties);
}
static void
gtk_text_view_child_init (GtkTextViewChild *self)
{
self->window_type = GTK_TEXT_WINDOW_TEXT;
gtk_widget_set_overflow (GTK_WIDGET (self), GTK_OVERFLOW_HIDDEN);
}
GtkWidget *
gtk_text_view_child_new (GtkTextWindowType window_type)
{
g_return_val_if_fail (window_type == GTK_TEXT_WINDOW_LEFT ||
window_type == GTK_TEXT_WINDOW_RIGHT ||
window_type == GTK_TEXT_WINDOW_TOP ||
window_type == GTK_TEXT_WINDOW_BOTTOM ||
window_type == GTK_TEXT_WINDOW_TEXT,
NULL);
return g_object_new (GTK_TYPE_TEXT_VIEW_CHILD,
"window-type", window_type,
NULL);
}
void
gtk_text_view_child_add_overlay (GtkTextViewChild *self,
GtkWidget *widget,
int xpos,
int ypos)
{
Overlay *overlay;
g_return_if_fail (GTK_IS_TEXT_VIEW_CHILD (self));
g_return_if_fail (GTK_IS_WIDGET (widget));
overlay = overlay_new (widget, xpos, ypos);
g_queue_push_tail (&self->overlays, &overlay->link);
gtk_widget_set_parent (widget, GTK_WIDGET (self));
}
void
gtk_text_view_child_move_overlay (GtkTextViewChild *self,
GtkWidget *widget,
int xpos,
int ypos)
{
Overlay *overlay;
g_return_if_fail (GTK_IS_TEXT_VIEW_CHILD (self));
g_return_if_fail (GTK_IS_WIDGET (widget));
overlay = gtk_text_view_child_get_overlay (self, widget);
if (overlay != NULL)
{
overlay->x = xpos;
overlay->y = ypos;
if (gtk_widget_get_visible (GTK_WIDGET (self)) &&
gtk_widget_get_visible (widget))
gtk_widget_queue_allocate (GTK_WIDGET (self));
}
}
GtkTextWindowType
gtk_text_view_child_get_window_type (GtkTextViewChild *self)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW_CHILD (self), 0);
return self->window_type;
}
void
gtk_text_view_child_set_offset (GtkTextViewChild *self,
int xoffset,
int yoffset)
{
gboolean changed = FALSE;
g_return_if_fail (GTK_IS_TEXT_VIEW_CHILD (self));
if (self->window_type == GTK_TEXT_WINDOW_TEXT ||
self->window_type == GTK_TEXT_WINDOW_TOP ||
self->window_type == GTK_TEXT_WINDOW_BOTTOM)
{
if (self->xoffset != xoffset)
{
self->xoffset = xoffset;
changed = TRUE;
}
}
if (self->window_type == GTK_TEXT_WINDOW_TEXT ||
self->window_type == GTK_TEXT_WINDOW_LEFT ||
self->window_type == GTK_TEXT_WINDOW_RIGHT)
{
if (self->yoffset != yoffset)
{
self->yoffset = yoffset;
changed = TRUE;
}
}
if (changed)
gtk_widget_queue_draw (GTK_WIDGET (self));
}

48
gtk/gtktextviewchildprivate.h Normal file
View File

@ -0,0 +1,48 @@
/* GTK - The GIMP Toolkit
* gtktextviewchild-private.h Copyright (C) 2019 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/>.
*/
#ifndef __GTK_TEXT_VIEW_CHILD_PRIVATE_H__
#define __GTK_TEXT_VIEW_CHILD_PRIVATE_H__
#include <gtk/gtkcontainer.h>
#include <gtk/gtktextview.h>
#define GTK_TYPE_TEXT_VIEW_CHILD (gtk_text_view_child_get_type())
G_GNUC_INTERNAL
G_DECLARE_FINAL_TYPE (GtkTextViewChild, gtk_text_view_child, GTK, TEXT_VIEW_CHILD, GtkContainer)
G_GNUC_INTERNAL
GtkWidget *gtk_text_view_child_new (GtkTextWindowType window_type);
G_GNUC_INTERNAL
GtkTextWindowType gtk_text_view_child_get_window_type (GtkTextViewChild *self);
G_GNUC_INTERNAL
void gtk_text_view_child_add_overlay (GtkTextViewChild *self,
GtkWidget *widget,
int xpos,
int ypos);
G_GNUC_INTERNAL
void gtk_text_view_child_move_overlay (GtkTextViewChild *self,
GtkWidget *widget,
int xpos,
int ypos);
G_GNUC_INTERNAL
void gtk_text_view_child_set_offset (GtkTextViewChild *child,
int xoffset,
int yoffset);
#endif /* __GTK_TEXT_VIEW_CHILD_PRIVATE_H__ */

1
gtk/meson.build
View File

@ -145,6 +145,7 @@ gtk_private_sources = files([
'gtkstylecascade.c',
'gtkstyleproperty.c',
'gtktextbtree.c',
'gtktextviewchild.c',
'gtktrashmonitor.c',
'gtktreedatalist.c',
])

7
tests/testtextview.c
View File

@ -193,10 +193,9 @@ main (int argc, char **argv)
gtk_container_add (GTK_CONTAINER (window), sw);
gtk_container_add (GTK_CONTAINER (sw), textview);
gtk_text_view_add_child_in_window (GTK_TEXT_VIEW (textview),
button,
GTK_TEXT_WINDOW_TEXT,
50, 150);
gtk_text_view_add_overlay (GTK_TEXT_VIEW (textview),
button,
50, 150);
gtk_text_view_add_child_at_anchor (GTK_TEXT_VIEW (textview),
button2, anchor);

19
testsuite/reftests/textview-border-windows.c
View File

@ -17,12 +17,23 @@
#include <gtk/gtk.h>
static void
set_border_window_size (GtkTextView *text_view,
GtkTextWindowType win,
gint size)
{
GtkWidget *label;
label = gtk_label_new (NULL);
gtk_widget_set_size_request (label, size, size);
gtk_text_view_set_gutter (text_view, win, label);
}
G_MODULE_EXPORT void
add_border_windows (GtkTextView *text_view)
{
gtk_text_view_set_border_window_size (text_view, GTK_TEXT_WINDOW_LEFT, 30);
gtk_text_view_set_border_window_size (text_view, GTK_TEXT_WINDOW_RIGHT, 30);
gtk_text_view_set_border_window_size (text_view, GTK_TEXT_WINDOW_TOP, 30);
gtk_text_view_set_border_window_size (text_view, GTK_TEXT_WINDOW_BOTTOM, 30);
set_border_window_size (text_view, GTK_TEXT_WINDOW_LEFT, 30);
set_border_window_size (text_view, GTK_TEXT_WINDOW_RIGHT, 30);
set_border_window_size (text_view, GTK_TEXT_WINDOW_TOP, 30);
set_border_window_size (text_view, GTK_TEXT_WINDOW_BOTTOM, 30);
}