Files
sysprof/lib/sp-scrolled-window.c
Christian Hergert 29c4ec495f Land Sysprof 2.x
This is a major redesign a modernization of Sysprof. The core data
structures and design are largely the same, but it has been ported to
Gtk3 and has lots of additions that should make your profiling experience
smoother. Especially for those that are new to profiling.

There are some very simple help docs added, but we really need the
experts to come in and write some documentation here.
2016-04-13 05:24:03 -07:00

281 lines
8.9 KiB
C

/* sp-scrolled-window.c
*
* Copyright (C) 2014 Christian Hergert <christian@hergert.me>
*
* This program 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 3 of the License, or
* (at your option) any later version.
*
* This program 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <glib/gi18n.h>
#include "sp-scrolled-window.h"
typedef struct
{
gint max_content_height;
gint max_content_width;
} SpScrolledWindowPrivate;
G_DEFINE_TYPE_WITH_PRIVATE (SpScrolledWindow, sp_scrolled_window, GTK_TYPE_SCROLLED_WINDOW)
enum {
PROP_0,
PROP_MAX_CONTENT_HEIGHT,
PROP_MAX_CONTENT_WIDTH,
LAST_PROP
};
static GParamSpec *properties [LAST_PROP];
GtkWidget *
sp_scrolled_window_new (void)
{
return g_object_new (SP_TYPE_SCROLLED_WINDOW, NULL);
}
gint
sp_scrolled_window_get_max_content_height (SpScrolledWindow *self)
{
SpScrolledWindowPrivate *priv = sp_scrolled_window_get_instance_private (self);
g_return_val_if_fail (SP_IS_SCROLLED_WINDOW (self), -1);
return priv->max_content_height;
}
/**
* sp_scrolled_window_set_max_content_height:
* @max_content_height: the max allowed height request or -1 to ignore.
*
* This function will set the "max-content-height" property. This property is
* used to determine the maximum height that the scrolled window will request.
*
* This is useful if you want to have a scrolled window grow with the child
* allocation, but only up to a certain height.
*/
void
sp_scrolled_window_set_max_content_height (SpScrolledWindow *self,
gint max_content_height)
{
SpScrolledWindowPrivate *priv = sp_scrolled_window_get_instance_private (self);
g_return_if_fail (SP_IS_SCROLLED_WINDOW (self));
if (max_content_height != priv->max_content_height)
{
priv->max_content_height = max_content_height;
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_MAX_CONTENT_HEIGHT]);
gtk_widget_queue_resize (GTK_WIDGET (self));
}
}
gint
sp_scrolled_window_get_max_content_width (SpScrolledWindow *self)
{
SpScrolledWindowPrivate *priv = sp_scrolled_window_get_instance_private (self);
g_return_val_if_fail (SP_IS_SCROLLED_WINDOW (self), -1);
return priv->max_content_width;
}
/**
* sp_scrolled_window_set_max_content_width:
* @max_content_width: the max allowed width request or -1 to ignore.
*
* This function will set the "max-content-width" property. This property is
* used to determine the maximum width that the scrolled window will request.
*
* This is useful if you want to have a scrolled window grow with the child
* allocation, but only up to a certain width.
*/
void
sp_scrolled_window_set_max_content_width (SpScrolledWindow *self,
gint max_content_width)
{
SpScrolledWindowPrivate *priv = sp_scrolled_window_get_instance_private (self);
g_return_if_fail (SP_IS_SCROLLED_WINDOW (self));
if (max_content_width != priv->max_content_width)
{
priv->max_content_width = max_content_width;
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_MAX_CONTENT_HEIGHT]);
gtk_widget_queue_resize (GTK_WIDGET (self));
}
}
static void
sp_scrolled_window_get_preferred_height (GtkWidget *widget,
gint *minimum_height,
gint *natural_height)
{
SpScrolledWindow *self = (SpScrolledWindow *)widget;
SpScrolledWindowPrivate *priv = sp_scrolled_window_get_instance_private (self);
g_return_if_fail (SP_IS_SCROLLED_WINDOW (self));
GTK_WIDGET_CLASS (sp_scrolled_window_parent_class)->get_preferred_height (widget, minimum_height, natural_height);
if (natural_height)
{
if (priv->max_content_height > -1)
{
GtkWidget *child;
GtkStyleContext *style;
GtkBorder border;
gint child_min_height;
gint child_nat_height;
gint additional;
if (!(child = gtk_bin_get_child (GTK_BIN (widget))))
return;
style = gtk_widget_get_style_context (widget);
gtk_style_context_get_border (style, gtk_style_context_get_state (style), &border);
additional = border.top + border.bottom;
gtk_widget_get_preferred_height (child, &child_min_height, &child_nat_height);
if ((child_nat_height > *natural_height) && (priv->max_content_height > *natural_height))
*natural_height = MIN (priv->max_content_height, child_nat_height) + additional;
}
}
}
static void
sp_scrolled_window_get_preferred_width (GtkWidget *widget,
gint *minimum_width,
gint *natural_width)
{
SpScrolledWindow *self = (SpScrolledWindow *)widget;
SpScrolledWindowPrivate *priv = sp_scrolled_window_get_instance_private (self);
g_return_if_fail (SP_IS_SCROLLED_WINDOW (self));
GTK_WIDGET_CLASS (sp_scrolled_window_parent_class)->get_preferred_width (widget, minimum_width, natural_width);
if (natural_width)
{
if (priv->max_content_width > -1)
{
GtkWidget *child;
GtkStyleContext *style;
GtkBorder border;
gint child_min_width;
gint child_nat_width;
gint additional;
if (!(child = gtk_bin_get_child (GTK_BIN (widget))))
return;
style = gtk_widget_get_style_context (widget);
gtk_style_context_get_border (style, gtk_style_context_get_state (style), &border);
additional = border.left = border.right + 1;
gtk_widget_get_preferred_width (child, &child_min_width, &child_nat_width);
if ((child_nat_width > *natural_width) && (priv->max_content_width > *natural_width))
*natural_width = MIN (priv->max_content_width, child_nat_width) + additional;
}
}
}
static void
sp_scrolled_window_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
SpScrolledWindow *self = SP_SCROLLED_WINDOW (object);
switch (prop_id)
{
case PROP_MAX_CONTENT_HEIGHT:
g_value_set_int (value, sp_scrolled_window_get_max_content_height (self));
break;
case PROP_MAX_CONTENT_WIDTH:
g_value_set_int (value, sp_scrolled_window_get_max_content_width (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
sp_scrolled_window_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
SpScrolledWindow *self = SP_SCROLLED_WINDOW (object);
switch (prop_id)
{
case PROP_MAX_CONTENT_HEIGHT:
sp_scrolled_window_set_max_content_height (self, g_value_get_int (value));
break;
case PROP_MAX_CONTENT_WIDTH:
sp_scrolled_window_set_max_content_width (self, g_value_get_int (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
sp_scrolled_window_class_init (SpScrolledWindowClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->get_property = sp_scrolled_window_get_property;
object_class->set_property = sp_scrolled_window_set_property;
widget_class->get_preferred_width = sp_scrolled_window_get_preferred_width;
widget_class->get_preferred_height = sp_scrolled_window_get_preferred_height;
properties [PROP_MAX_CONTENT_HEIGHT] =
g_param_spec_int ("max-content-height",
"Max Content Height",
"The maximum height request that can be made.",
-1,
G_MAXINT,
-1,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
properties [PROP_MAX_CONTENT_WIDTH] =
g_param_spec_int ("max-content-width",
"Max Content Width",
"The maximum width request that can be made.",
-1,
G_MAXINT,
-1,
(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_properties (object_class, LAST_PROP, properties);
}
static void
sp_scrolled_window_init (SpScrolledWindow *self)
{
SpScrolledWindowPrivate *priv = sp_scrolled_window_get_instance_private (self);
priv->max_content_height = -1;
priv->max_content_width = -1;
}