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gtk2/gtk/gtkscalebutton.c
Bastien Nocera b436f5b8a3 Bug 461944 – pressing the volume icon in full screen shuts down the sound 
Don't pass the click on the button through to the scale when the
dock popup will be moved, otherwise we could end up changing the
sound in unexcepted ways (to zero for vertical popups at the bottom
of the screen for example).
2009-06-22 17:25:21 +01:00

1580 lines
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/* GTK - The GIMP Toolkit
* Copyright (C) 2005 Ronald S. Bultje
* Copyright (C) 2006, 2007 Christian Persch
* Copyright (C) 2006 Jan Arne Petersen
* Copyright (C) 2005-2007 Red Hat, Inc.
*
* Authors:
* - Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* - Bastien Nocera <bnocera@redhat.com>
* - Jan Arne Petersen <jpetersen@jpetersen.org>
* - Christian Persch <chpe@svn.gnome.org>
*
* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 2007. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#ifndef _WIN32
#define _GNU_SOURCE
#endif
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gdk/gdkkeysyms.h>
#include "gtkbindings.h"
#include "gtkframe.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkorientable.h"
#include "gtkprivate.h"
#include "gtkscale.h"
#include "gtkscalebutton.h"
#include "gtkstock.h"
#include "gtkvbox.h"
#include "gtkwindow.h"
#include "gtkintl.h"
#include "gtkalias.h"
#define SCALE_SIZE 100
#define CLICK_TIMEOUT 250
enum
{
VALUE_CHANGED,
POPUP,
POPDOWN,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_ORIENTATION,
PROP_VALUE,
PROP_SIZE,
PROP_ADJUSTMENT,
PROP_ICONS
};
#define GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_SCALE_BUTTON, GtkScaleButtonPrivate))
struct _GtkScaleButtonPrivate
{
GtkWidget *dock;
GtkWidget *box;
GtkWidget *scale;
GtkWidget *image;
GtkIconSize size;
GtkOrientation orientation;
guint click_id;
gint click_timeout;
guint timeout : 1;
gdouble direction;
guint32 pop_time;
gchar **icon_list;
GtkAdjustment *adjustment; /* needed because it must be settable in init() */
};
static GObject* gtk_scale_button_constructor (GType type,
guint n_construct_properties,
GObjectConstructParam *construct_params);
static void gtk_scale_button_dispose (GObject *object);
static void gtk_scale_button_finalize (GObject *object);
static void gtk_scale_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_scale_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_scale_button_set_orientation_private (GtkScaleButton *button,
GtkOrientation orientation);
static gboolean gtk_scale_button_scroll (GtkWidget *widget,
GdkEventScroll *event);
static void gtk_scale_button_screen_changed (GtkWidget *widget,
GdkScreen *previous_screen);
static gboolean gtk_scale_button_press (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_scale_button_key_release (GtkWidget *widget,
GdkEventKey *event);
static void gtk_scale_button_popup (GtkWidget *widget);
static void gtk_scale_button_popdown (GtkWidget *widget);
static gboolean cb_dock_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data);
static gboolean cb_dock_key_release (GtkWidget *widget,
GdkEventKey *event,
gpointer user_data);
static gboolean cb_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data);
static gboolean cb_button_release (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data);
static void cb_dock_grab_notify (GtkWidget *widget,
gboolean was_grabbed,
gpointer user_data);
static gboolean cb_dock_grab_broken_event (GtkWidget *widget,
gboolean was_grabbed,
gpointer user_data);
static void cb_scale_grab_notify (GtkWidget *widget,
gboolean was_grabbed,
gpointer user_data);
static void gtk_scale_button_update_icon (GtkScaleButton *button);
static void gtk_scale_button_scale_value_changed(GtkRange *range);
/* see below for scale definitions */
static GtkWidget *gtk_scale_button_scale_new (GtkScaleButton *button);
G_DEFINE_TYPE_WITH_CODE (GtkScaleButton, gtk_scale_button, GTK_TYPE_BUTTON,
G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE,
NULL))
static guint signals[LAST_SIGNAL] = { 0, };
static void
gtk_scale_button_class_init (GtkScaleButtonClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkBindingSet *binding_set;
g_type_class_add_private (klass, sizeof (GtkScaleButtonPrivate));
gobject_class->constructor = gtk_scale_button_constructor;
gobject_class->finalize = gtk_scale_button_finalize;
gobject_class->dispose = gtk_scale_button_dispose;
gobject_class->set_property = gtk_scale_button_set_property;
gobject_class->get_property = gtk_scale_button_get_property;
widget_class->button_press_event = gtk_scale_button_press;
widget_class->key_release_event = gtk_scale_button_key_release;
widget_class->scroll_event = gtk_scale_button_scroll;
widget_class->screen_changed = gtk_scale_button_screen_changed;
/**
* GtkScaleButton:orientation:
*
* The orientation of the #GtkScaleButton's popup window.
*
* Note that since GTK+ 2.16, #GtkScaleButton implements the
* #GtkOrientable interface which has its own @orientation
* property. However we redefine the property here in order to
* override its default horizontal orientation.
*
* Since: 2.14
**/
g_object_class_override_property (gobject_class,
PROP_ORIENTATION,
"orientation");
g_object_class_install_property (gobject_class,
PROP_VALUE,
g_param_spec_double ("value",
P_("Value"),
P_("The value of the scale"),
-G_MAXDOUBLE,
G_MAXDOUBLE,
0,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_SIZE,
g_param_spec_enum ("size",
P_("Icon size"),
P_("The icon size"),
GTK_TYPE_ICON_SIZE,
GTK_ICON_SIZE_SMALL_TOOLBAR,
GTK_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_ADJUSTMENT,
g_param_spec_object ("adjustment",
P_("Adjustment"),
P_("The GtkAdjustment that contains the current value of this scale button object"),
GTK_TYPE_ADJUSTMENT,
GTK_PARAM_READWRITE));
/**
* GtkScaleButton:icons:
*
* The names of the icons to be used by the scale button.
* The first item in the array will be used in the button
* when the current value is the lowest value, the second
* item for the highest value. All the subsequent icons will
* be used for all the other values, spread evenly over the
* range of values.
*
* If there's only one icon name in the @icons array, it will
* be used for all the values. If only two icon names are in
* the @icons array, the first one will be used for the bottom
* 50% of the scale, and the second one for the top 50%.
*
* It is recommended to use at least 3 icons so that the
* #GtkScaleButton reflects the current value of the scale
* better for the users.
*
* Since: 2.12
*/
g_object_class_install_property (gobject_class,
PROP_ICONS,
g_param_spec_boxed ("icons",
P_("Icons"),
P_("List of icon names"),
G_TYPE_STRV,
GTK_PARAM_READWRITE));
/**
* GtkScaleButton::value-changed:
* @button: the object which received the signal
* @value: the new value
*
* The ::value-changed signal is emitted when the value field has
* changed.
*
* Since: 2.12
*/
signals[VALUE_CHANGED] =
g_signal_new (I_("value-changed"),
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkScaleButtonClass, value_changed),
NULL, NULL,
_gtk_marshal_VOID__DOUBLE,
G_TYPE_NONE, 1, G_TYPE_DOUBLE);
/**
* GtkScaleButton::popup:
* @button: the object which received the signal
*
* The ::popup signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to popup the scale widget.
*
* The default bindings for this signal are Space, Enter and Return.
*
* Since: 2.12
*/
signals[POPUP] =
g_signal_new_class_handler (I_("popup"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_scale_button_popup),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkScaleButton::popdown:
* @button: the object which received the signal
*
* The ::popdown signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to popdown the scale widget.
*
* The default binding for this signal is Escape.
*
* Since: 2.12
*/
signals[POPDOWN] =
g_signal_new_class_handler (I_("popdown"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_scale_button_popdown),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/* Key bindings */
binding_set = gtk_binding_set_by_class (widget_class);
gtk_binding_entry_add_signal (binding_set, GDK_space, 0,
"popup", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, 0,
"popup", 0);
gtk_binding_entry_add_signal (binding_set, GDK_Return, 0,
"popup", 0);
gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0,
"popup", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0,
"popup", 0);
gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0,
"popdown", 0);
}
static void
gtk_scale_button_init (GtkScaleButton *button)
{
GtkScaleButtonPrivate *priv;
GtkWidget *frame;
button->priv = priv = GET_PRIVATE (button);
priv->timeout = FALSE;
priv->click_id = 0;
priv->click_timeout = CLICK_TIMEOUT;
priv->orientation = GTK_ORIENTATION_VERTICAL;
gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE);
gtk_button_set_focus_on_click (GTK_BUTTON (button), FALSE);
/* image */
priv->image = gtk_image_new ();
gtk_container_add (GTK_CONTAINER (button), priv->image);
gtk_widget_show_all (priv->image);
/* window */
priv->dock = gtk_window_new (GTK_WINDOW_POPUP);
gtk_widget_set_name (priv->dock, "gtk-scalebutton-popup-window");
g_signal_connect (priv->dock, "button-press-event",
G_CALLBACK (cb_dock_button_press), button);
g_signal_connect (priv->dock, "key-release-event",
G_CALLBACK (cb_dock_key_release), button);
g_signal_connect (priv->dock, "grab-notify",
G_CALLBACK (cb_dock_grab_notify), button);
g_signal_connect (priv->dock, "grab-broken-event",
G_CALLBACK (cb_dock_grab_broken_event), button);
gtk_window_set_decorated (GTK_WINDOW (priv->dock), FALSE);
/* frame */
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (priv->dock), frame);
/* box for scale and +/- buttons */
priv->box = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (frame), priv->box);
/* + */
button->plus_button = gtk_button_new_with_label ("+");
gtk_button_set_relief (GTK_BUTTON (button->plus_button), GTK_RELIEF_NONE);
g_signal_connect (button->plus_button, "button-press-event",
G_CALLBACK (cb_button_press), button);
g_signal_connect (button->plus_button, "button-release-event",
G_CALLBACK (cb_button_release), button);
gtk_box_pack_start (GTK_BOX (priv->box), button->plus_button, FALSE, FALSE, 0);
/* - */
button->minus_button = gtk_button_new_with_label ("-");
gtk_button_set_relief (GTK_BUTTON (button->minus_button), GTK_RELIEF_NONE);
g_signal_connect (button->minus_button, "button-press-event",
G_CALLBACK (cb_button_press), button);
g_signal_connect (button->minus_button, "button-release-event",
G_CALLBACK (cb_button_release), button);
gtk_box_pack_end (GTK_BOX (priv->box), button->minus_button, FALSE, FALSE, 0);
priv->adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 100.0, 2, 20, 0));
g_object_ref_sink (priv->adjustment);
/* the scale */
priv->scale = gtk_scale_button_scale_new (button);
gtk_container_add (GTK_CONTAINER (priv->box), priv->scale);
}
static GObject *
gtk_scale_button_constructor (GType type,
guint n_construct_properties,
GObjectConstructParam *construct_params)
{
GObject *object;
GtkScaleButton *button;
GtkScaleButtonPrivate *priv;
object = G_OBJECT_CLASS (gtk_scale_button_parent_class)->constructor (type, n_construct_properties, construct_params);
button = GTK_SCALE_BUTTON (object);
priv = button->priv;
/* set button text and size */
priv->size = GTK_ICON_SIZE_SMALL_TOOLBAR;
gtk_scale_button_update_icon (button);
return object;
}
static void
gtk_scale_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkScaleButton *button = GTK_SCALE_BUTTON (object);
switch (prop_id)
{
case PROP_ORIENTATION:
gtk_scale_button_set_orientation_private (button, g_value_get_enum (value));
break;
case PROP_VALUE:
gtk_scale_button_set_value (button, g_value_get_double (value));
break;
case PROP_SIZE:
{
GtkIconSize size;
size = g_value_get_enum (value);
if (button->priv->size != size)
{
button->priv->size = size;
gtk_scale_button_update_icon (button);
}
}
break;
case PROP_ADJUSTMENT:
gtk_scale_button_set_adjustment (button, g_value_get_object (value));
break;
case PROP_ICONS:
gtk_scale_button_set_icons (button,
(const gchar **)g_value_get_boxed (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_scale_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkScaleButton *button = GTK_SCALE_BUTTON (object);
GtkScaleButtonPrivate *priv = button->priv;
switch (prop_id)
{
case PROP_ORIENTATION:
g_value_set_enum (value, priv->orientation);
break;
case PROP_VALUE:
g_value_set_double (value, gtk_scale_button_get_value (button));
break;
case PROP_SIZE:
g_value_set_enum (value, priv->size);
break;
case PROP_ADJUSTMENT:
g_value_set_object (value, gtk_scale_button_get_adjustment (button));
break;
case PROP_ICONS:
g_value_set_boxed (value, priv->icon_list);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_scale_button_finalize (GObject *object)
{
GtkScaleButton *button = GTK_SCALE_BUTTON (object);
GtkScaleButtonPrivate *priv = button->priv;
if (priv->icon_list)
{
g_strfreev (priv->icon_list);
priv->icon_list = NULL;
}
if (priv->adjustment)
{
g_object_unref (priv->adjustment);
priv->adjustment = NULL;
}
G_OBJECT_CLASS (gtk_scale_button_parent_class)->finalize (object);
}
static void
gtk_scale_button_dispose (GObject *object)
{
GtkScaleButton *button = GTK_SCALE_BUTTON (object);
GtkScaleButtonPrivate *priv = button->priv;
if (priv->dock)
{
gtk_widget_destroy (priv->dock);
priv->dock = NULL;
}
if (priv->click_id != 0)
{
g_source_remove (priv->click_id);
priv->click_id = 0;
}
G_OBJECT_CLASS (gtk_scale_button_parent_class)->dispose (object);
}
/**
* gtk_scale_button_new:
* @size: a stock icon size
* @min: the minimum value of the scale (usually 0)
* @max: the maximum value of the scale (usually 100)
* @step: the stepping of value when a scroll-wheel event,
* or up/down arrow event occurs (usually 2)
* @icons: a %NULL-terminated array of icon names, or %NULL if
* you want to set the list later with gtk_scale_button_set_icons()
*
* Creates a #GtkScaleButton, with a range between @min and @max, with
* a stepping of @step.
*
* Return value: a new #GtkScaleButton
*
* Since: 2.12
*/
GtkWidget *
gtk_scale_button_new (GtkIconSize size,
gdouble min,
gdouble max,
gdouble step,
const gchar **icons)
{
GtkScaleButton *button;
GtkObject *adj;
adj = gtk_adjustment_new (min, min, max, step, 10 * step, 0);
button = g_object_new (GTK_TYPE_SCALE_BUTTON,
"adjustment", adj,
"icons", icons,
"size", size,
NULL);
return GTK_WIDGET (button);
}
/**
* gtk_scale_button_get_value:
* @button: a #GtkScaleButton
*
* Gets the current value of the scale button.
*
* Return value: current value of the scale button
*
* Since: 2.12
*/
gdouble
gtk_scale_button_get_value (GtkScaleButton * button)
{
GtkScaleButtonPrivate *priv;
g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), 0);
priv = button->priv;
return gtk_adjustment_get_value (priv->adjustment);
}
/**
* gtk_scale_button_set_value:
* @button: a #GtkScaleButton
* @value: new value of the scale button
*
* Sets the current value of the scale; if the value is outside
* the minimum or maximum range values, it will be clamped to fit
* inside them. The scale button emits the #GtkScaleButton::value-changed
* signal if the value changes.
*
* Since: 2.12
*/
void
gtk_scale_button_set_value (GtkScaleButton *button,
gdouble value)
{
GtkScaleButtonPrivate *priv;
g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
priv = button->priv;
gtk_range_set_value (GTK_RANGE (priv->scale), value);
}
/**
* gtk_scale_button_set_icons:
* @button: a #GtkScaleButton
* @icons: a %NULL-terminated array of icon names
*
* Sets the icons to be used by the scale button.
* For details, see the #GtkScaleButton:icons property.
*
* Since: 2.12
*/
void
gtk_scale_button_set_icons (GtkScaleButton *button,
const gchar **icons)
{
GtkScaleButtonPrivate *priv;
gchar **tmp;
g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
priv = button->priv;
tmp = priv->icon_list;
priv->icon_list = g_strdupv ((gchar **) icons);
g_strfreev (tmp);
gtk_scale_button_update_icon (button);
g_object_notify (G_OBJECT (button), "icons");
}
/**
* gtk_scale_button_get_adjustment:
* @button: a #GtkScaleButton
*
* Gets the #GtkAdjustment associated with the #GtkScaleButton's scale.
* See gtk_range_get_adjustment() for details.
*
* Returns: the adjustment associated with the scale
*
* Since: 2.12
*/
GtkAdjustment*
gtk_scale_button_get_adjustment (GtkScaleButton *button)
{
g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), NULL);
return button->priv->adjustment;
}
/**
* gtk_scale_button_set_adjustment:
* @button: a #GtkScaleButton
* @adjustment: a #GtkAdjustment
*
* Sets the #GtkAdjustment to be used as a model
* for the #GtkScaleButton's scale.
* See gtk_range_set_adjustment() for details.
*
* Since: 2.12
*/
void
gtk_scale_button_set_adjustment (GtkScaleButton *button,
GtkAdjustment *adjustment)
{
g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
if (!adjustment)
adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
else
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
if (button->priv->adjustment != adjustment)
{
if (button->priv->adjustment)
g_object_unref (button->priv->adjustment);
button->priv->adjustment = g_object_ref_sink (adjustment);
if (button->priv->scale)
gtk_range_set_adjustment (GTK_RANGE (button->priv->scale), adjustment);
g_object_notify (G_OBJECT (button), "adjustment");
}
}
/**
* gtk_scale_button_get_orientation:
* @button: a #GtkScaleButton
*
* Gets the orientation of the #GtkScaleButton's popup window.
*
* Returns: the #GtkScaleButton's orientation.
*
* Since: 2.14
*
* Deprecated: 2.16: Use gtk_orientable_get_orientation() instead.
**/
GtkOrientation
gtk_scale_button_get_orientation (GtkScaleButton *button)
{
g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), GTK_ORIENTATION_VERTICAL);
return button->priv->orientation;
}
/**
* gtk_scale_button_set_orientation:
* @button: a #GtkScaleButton
* @orientation: the new orientation
*
* Sets the orientation of the #GtkScaleButton's popup window.
*
* Since: 2.14
*
* Deprecated: 2.16: Use gtk_orientable_set_orientation() instead.
**/
void
gtk_scale_button_set_orientation (GtkScaleButton *button,
GtkOrientation orientation)
{
g_return_if_fail (GTK_IS_SCALE_BUTTON (button));
gtk_scale_button_set_orientation_private (button, orientation);
}
/**
* gtk_scale_button_get_plus_button:
* @button: a #GtkScaleButton
*
* Retrieves the plus button of the #GtkScaleButton.
*
* Returns: the plus button of the #GtkScaleButton.
*
* Since: 2.14
*/
GtkWidget *
gtk_scale_button_get_plus_button (GtkScaleButton *button)
{
g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), NULL);
return button->plus_button;
}
/**
* gtk_scale_button_get_minus_button:
* @button: a #GtkScaleButton
*
* Retrieves the minus button of the #GtkScaleButton.
*
* Returns: the minus button of the #GtkScaleButton.
*
* Since: 2.14
*/
GtkWidget *
gtk_scale_button_get_minus_button (GtkScaleButton *button)
{
g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), NULL);
return button->minus_button;
}
/**
* gtk_scale_button_get_popup:
* @button: a #GtkScaleButton
*
* Retrieves the popup of the #GtkScaleButton.
*
* Returns: the popup of the #GtkScaleButton
*
* Since: 2.14
*/
GtkWidget *
gtk_scale_button_get_popup (GtkScaleButton *button)
{
g_return_val_if_fail (GTK_IS_SCALE_BUTTON (button), NULL);
return button->priv->dock;
}
static void
gtk_scale_button_set_orientation_private (GtkScaleButton *button,
GtkOrientation orientation)
{
GtkScaleButtonPrivate *priv = button->priv;
if (orientation != priv->orientation)
{
priv->orientation = orientation;
gtk_orientable_set_orientation (GTK_ORIENTABLE (priv->box),
orientation);
gtk_container_child_set (GTK_CONTAINER (priv->box),
button->plus_button,
"pack-type",
orientation == GTK_ORIENTATION_VERTICAL ?
GTK_PACK_START : GTK_PACK_END,
NULL);
gtk_container_child_set (GTK_CONTAINER (priv->box),
button->minus_button,
"pack-type",
orientation == GTK_ORIENTATION_VERTICAL ?
GTK_PACK_END : GTK_PACK_START,
NULL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (priv->scale),
orientation);
if (orientation == GTK_ORIENTATION_VERTICAL)
{
gtk_widget_set_size_request (GTK_WIDGET (priv->scale),
-1, SCALE_SIZE);
gtk_range_set_inverted (GTK_RANGE (priv->scale), TRUE);
}
else
{
gtk_widget_set_size_request (GTK_WIDGET (priv->scale),
SCALE_SIZE, -1);
gtk_range_set_inverted (GTK_RANGE (priv->scale), FALSE);
}
/* FIXME: without this, the popup window appears as a square
* after changing the orientation
*/
gtk_window_resize (GTK_WINDOW (priv->dock), 1, 1);
g_object_notify (G_OBJECT (button), "orientation");
}
}
/*
* button callbacks.
*/
static gboolean
gtk_scale_button_scroll (GtkWidget *widget,
GdkEventScroll *event)
{
GtkScaleButton *button;
GtkScaleButtonPrivate *priv;
GtkAdjustment *adj;
gdouble d;
button = GTK_SCALE_BUTTON (widget);
priv = button->priv;
adj = priv->adjustment;
if (event->type != GDK_SCROLL)
return FALSE;
d = gtk_scale_button_get_value (button);
if (event->direction == GDK_SCROLL_UP)
{
d += adj->step_increment;
if (d > adj->upper)
d = adj->upper;
}
else
{
d -= adj->step_increment;
if (d < adj->lower)
d = adj->lower;
}
gtk_scale_button_set_value (button, d);
return TRUE;
}
static void
gtk_scale_button_screen_changed (GtkWidget *widget,
GdkScreen *previous_screen)
{
GtkScaleButton *button = (GtkScaleButton *) widget;
GtkScaleButtonPrivate *priv;
GdkScreen *screen;
GValue value = { 0, };
if (gtk_widget_has_screen (widget) == FALSE)
return;
priv = button->priv;
screen = gtk_widget_get_screen (widget);
g_value_init (&value, G_TYPE_INT);
if (gdk_screen_get_setting (screen,
"gtk-double-click-time",
&value) == FALSE)
{
priv->click_timeout = CLICK_TIMEOUT;
return;
}
priv->click_timeout = g_value_get_int (&value);
}
static gboolean
gtk_scale_popup (GtkWidget *widget,
GdkEvent *event,
guint32 time)
{
GtkScaleButton *button;
GtkScaleButtonPrivate *priv;
GtkAdjustment *adj;
gint x, y, m, dx, dy, sx, sy, startoff;
gdouble v;
GdkDisplay *display;
GdkScreen *screen;
gboolean is_moved;
is_moved = FALSE;
button = GTK_SCALE_BUTTON (widget);
priv = button->priv;
adj = priv->adjustment;
display = gtk_widget_get_display (widget);
screen = gtk_widget_get_screen (widget);
/* position roughly */
gtk_window_set_screen (GTK_WINDOW (priv->dock), screen);
gdk_window_get_origin (widget->window, &x, &y);
x += widget->allocation.x;
y += widget->allocation.y;
if (priv->orientation == GTK_ORIENTATION_VERTICAL)
gtk_window_move (GTK_WINDOW (priv->dock), x, y - (SCALE_SIZE / 2));
else
gtk_window_move (GTK_WINDOW (priv->dock), x - (SCALE_SIZE / 2), y);
gtk_widget_show_all (priv->dock);
gdk_window_get_origin (priv->dock->window, &dx, &dy);
dx += priv->dock->allocation.x;
dy += priv->dock->allocation.y;
gdk_window_get_origin (priv->scale->window, &sx, &sy);
sx += priv->scale->allocation.x;
sy += priv->scale->allocation.y;
priv->timeout = TRUE;
/* position (needs widget to be shown already) */
v = gtk_scale_button_get_value (button) / (adj->upper - adj->lower);
if (priv->orientation == GTK_ORIENTATION_VERTICAL)
{
startoff = sy - dy;
x += (widget->allocation.width - priv->dock->allocation.width) / 2;
y -= startoff;
y -= GTK_RANGE (priv->scale)->min_slider_size / 2;
m = priv->scale->allocation.height -
GTK_RANGE (priv->scale)->min_slider_size;
y -= m * (1.0 - v);
}
else
{
startoff = sx - dx;
x -= startoff;
y += (widget->allocation.height - priv->dock->allocation.height) / 2;
x -= GTK_RANGE (priv->scale)->min_slider_size / 2;
m = priv->scale->allocation.width -
GTK_RANGE (priv->scale)->min_slider_size;
x -= m * v;
}
/* Make sure the dock stays inside the monitor */
if (event->type == GDK_BUTTON_PRESS)
{
int monitor;
GdkEventButton *button_event = (GdkEventButton *) event;
GdkRectangle rect;
GtkWidget *d;
d = GTK_WIDGET (priv->dock);
monitor = gdk_screen_get_monitor_at_point (screen,
button_event->x_root,
button_event->y_root);
gdk_screen_get_monitor_geometry (screen, monitor, &rect);
if (priv->orientation == GTK_ORIENTATION_VERTICAL)
y += button_event->y;
else
x += button_event->x;
/* Move the dock, but set is_moved so we
* don't forward the first click later on,
* as it could make the scale go to the bottom */
if (y < rect.y) {
y = rect.y;
is_moved = TRUE;
} else if (y + d->allocation.height > rect.height + rect.y) {
y = rect.y + rect.height - d->allocation.height;
is_moved = TRUE;
}
if (x < rect.x) {
x = rect.x;
is_moved = TRUE;
} else if (x + d->allocation.width > rect.width + rect.x) {
x = rect.x + rect.width - d->allocation.width;
is_moved = TRUE;
}
}
gtk_window_move (GTK_WINDOW (priv->dock), x, y);
if (event->type == GDK_BUTTON_PRESS)
GTK_WIDGET_CLASS (gtk_scale_button_parent_class)->button_press_event (widget, (GdkEventButton *) event);
/* grab focus */
gtk_grab_add (priv->dock);
if (gdk_pointer_grab (priv->dock->window, TRUE,
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK, NULL, NULL, time)
!= GDK_GRAB_SUCCESS)
{
gtk_grab_remove (priv->dock);
gtk_widget_hide (priv->dock);
return FALSE;
}
if (gdk_keyboard_grab (priv->dock->window, TRUE, time) != GDK_GRAB_SUCCESS)
{
gdk_display_pointer_ungrab (display, time);
gtk_grab_remove (priv->dock);
gtk_widget_hide (priv->dock);
return FALSE;
}
gtk_widget_grab_focus (priv->dock);
if (event->type == GDK_BUTTON_PRESS && !is_moved)
{
GdkEventButton *e;
GdkEventButton *button_event = (GdkEventButton *) event;
/* forward event to the slider */
e = (GdkEventButton *) gdk_event_copy ((GdkEvent *) event);
e->window = priv->scale->window;
/* position: the X position isn't relevant, halfway will work just fine.
* The vertical position should be *exactly* in the middle of the slider
* of the scale; if we don't do that correctly, it'll move from its current
* position, which means a position change on-click, which is bad.
*/
if (priv->orientation == GTK_ORIENTATION_VERTICAL)
{
e->x = priv->scale->allocation.width / 2;
m = priv->scale->allocation.height -
GTK_RANGE (priv->scale)->min_slider_size;
e->y = ((1.0 - v) * m) + GTK_RANGE (priv->scale)->min_slider_size / 2;
}
else
{
e->y = priv->scale->allocation.height / 2;
m = priv->scale->allocation.width -
GTK_RANGE (priv->scale)->min_slider_size;
e->x = (v * m) + GTK_RANGE (priv->scale)->min_slider_size / 2;
}
gtk_widget_event (priv->scale, (GdkEvent *) e);
e->window = button_event->window;
gdk_event_free ((GdkEvent *) e);
}
gtk_widget_grab_focus (priv->scale);
priv->pop_time = time;
return TRUE;
}
static gboolean
gtk_scale_button_press (GtkWidget *widget,
GdkEventButton *event)
{
return gtk_scale_popup (widget, (GdkEvent *) event, event->time);
}
static void
gtk_scale_button_popup (GtkWidget *widget)
{
GdkEvent *ev;
ev = gdk_event_new (GDK_KEY_RELEASE);
gtk_scale_popup (widget, ev, GDK_CURRENT_TIME);
gdk_event_free (ev);
}
static gboolean
gtk_scale_button_key_release (GtkWidget *widget,
GdkEventKey *event)
{
return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
}
/* This is called when the grab is broken for
* either the dock, or the scale itself */
static void
gtk_scale_button_grab_notify (GtkScaleButton *button,
gboolean was_grabbed)
{
GdkDisplay *display;
GtkScaleButtonPrivate *priv;
if (was_grabbed != FALSE)
return;
priv = button->priv;
if (!GTK_WIDGET_HAS_GRAB (priv->dock))
return;
if (gtk_widget_is_ancestor (gtk_grab_get_current (), priv->dock))
return;
display = gtk_widget_get_display (priv->dock);
gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
gtk_grab_remove (priv->dock);
/* hide again */
gtk_widget_hide (priv->dock);
priv->timeout = FALSE;
}
/*
* +/- button callbacks.
*/
static gboolean
cb_button_timeout (gpointer user_data)
{
GtkScaleButton *button;
GtkScaleButtonPrivate *priv;
GtkAdjustment *adj;
gdouble val;
gboolean res = TRUE;
button = GTK_SCALE_BUTTON (user_data);
priv = button->priv;
if (priv->click_id == 0)
return FALSE;
adj = priv->adjustment;
val = gtk_scale_button_get_value (button);
val += priv->direction;
if (val <= adj->lower)
{
res = FALSE;
val = adj->lower;
}
else if (val > adj->upper)
{
res = FALSE;
val = adj->upper;
}
gtk_scale_button_set_value (button, val);
if (!res)
{
g_source_remove (priv->click_id);
priv->click_id = 0;
}
return res;
}
static gboolean
cb_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data)
{
GtkScaleButton *button;
GtkScaleButtonPrivate *priv;
GtkAdjustment *adj;
button = GTK_SCALE_BUTTON (user_data);
priv = button->priv;
adj = priv->adjustment;
if (priv->click_id != 0)
g_source_remove (priv->click_id);
if (widget == button->plus_button)
priv->direction = fabs (adj->page_increment);
else
priv->direction = - fabs (adj->page_increment);
priv->click_id = gdk_threads_add_timeout (priv->click_timeout,
cb_button_timeout,
button);
cb_button_timeout (button);
return TRUE;
}
static gboolean
cb_button_release (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data)
{
GtkScaleButton *button;
GtkScaleButtonPrivate *priv;
button = GTK_SCALE_BUTTON (user_data);
priv = button->priv;
if (priv->click_id != 0)
{
g_source_remove (priv->click_id);
priv->click_id = 0;
}
return TRUE;
}
static void
cb_dock_grab_notify (GtkWidget *widget,
gboolean was_grabbed,
gpointer user_data)
{
GtkScaleButton *button = (GtkScaleButton *) user_data;
gtk_scale_button_grab_notify (button, was_grabbed);
}
static gboolean
cb_dock_grab_broken_event (GtkWidget *widget,
gboolean was_grabbed,
gpointer user_data)
{
GtkScaleButton *button = (GtkScaleButton *) user_data;
gtk_scale_button_grab_notify (button, FALSE);
return FALSE;
}
/*
* Scale callbacks.
*/
static void
gtk_scale_button_release_grab (GtkScaleButton *button,
GdkEventButton *event)
{
GdkEventButton *e;
GdkDisplay *display;
GtkScaleButtonPrivate *priv;
priv = button->priv;
/* ungrab focus */
display = gtk_widget_get_display (GTK_WIDGET (button));
gdk_display_keyboard_ungrab (display, event->time);
gdk_display_pointer_ungrab (display, event->time);
gtk_grab_remove (priv->dock);
/* hide again */
gtk_widget_hide (priv->dock);
priv->timeout = FALSE;
e = (GdkEventButton *) gdk_event_copy ((GdkEvent *) event);
e->window = GTK_WIDGET (button)->window;
e->type = GDK_BUTTON_RELEASE;
gtk_widget_event (GTK_WIDGET (button), (GdkEvent *) e);
e->window = event->window;
gdk_event_free ((GdkEvent *) e);
}
static gboolean
cb_dock_button_press (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data)
{
GtkScaleButton *button = GTK_SCALE_BUTTON (user_data);
if (event->type == GDK_BUTTON_PRESS)
{
gtk_scale_button_release_grab (button, event);
return TRUE;
}
return FALSE;
}
static void
gtk_scale_button_popdown (GtkWidget *widget)
{
GtkScaleButton *button;
GtkScaleButtonPrivate *priv;
GdkDisplay *display;
button = GTK_SCALE_BUTTON (widget);
priv = button->priv;
/* ungrab focus */
display = gtk_widget_get_display (widget);
gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
gtk_grab_remove (priv->dock);
/* hide again */
gtk_widget_hide (priv->dock);
priv->timeout = FALSE;
}
static gboolean
cb_dock_key_release (GtkWidget *widget,
GdkEventKey *event,
gpointer user_data)
{
if (event->keyval == GDK_Escape)
{
gtk_scale_button_popdown (GTK_WIDGET (user_data));
return TRUE;
}
if (!gtk_bindings_activate_event (GTK_OBJECT (widget), event))
{
/* The popup hasn't managed the event, pass onto the button */
gtk_bindings_activate_event (GTK_OBJECT (user_data), event);
}
return TRUE;
}
static void
cb_scale_grab_notify (GtkWidget *widget,
gboolean was_grabbed,
gpointer user_data)
{
GtkScaleButton *button = (GtkScaleButton *) user_data;
gtk_scale_button_grab_notify (button, was_grabbed);
}
/*
* Scale stuff.
*/
#define GTK_TYPE_SCALE_BUTTON_SCALE (_gtk_scale_button_scale_get_type ())
#define GTK_SCALE_BUTTON_SCALE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_SCALE_BUTTON_SCALE, GtkScaleButtonScale))
#define GTK_IS_SCALE_BUTTON_SCALE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_SCALE_BUTTON_SCALE))
typedef struct _GtkScaleButtonScale
{
GtkScale parent_instance;
GtkScaleButton *button;
} GtkScaleButtonScale;
typedef struct _GtkScaleButtonScaleClass
{
GtkScaleClass parent_class;
} GtkScaleButtonScaleClass;
static gboolean gtk_scale_button_scale_press (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_scale_button_scale_release (GtkWidget *widget,
GdkEventButton *event);
G_DEFINE_TYPE (GtkScaleButtonScale, _gtk_scale_button_scale, GTK_TYPE_SCALE)
static void
_gtk_scale_button_scale_class_init (GtkScaleButtonScaleClass *klass)
{
GtkWidgetClass *gtkwidget_class = GTK_WIDGET_CLASS (klass);
GtkRangeClass *gtkrange_class = GTK_RANGE_CLASS (klass);
gtkwidget_class->button_press_event = gtk_scale_button_scale_press;
gtkwidget_class->button_release_event = gtk_scale_button_scale_release;
gtkrange_class->value_changed = gtk_scale_button_scale_value_changed;
}
static void
_gtk_scale_button_scale_init (GtkScaleButtonScale *scale)
{
}
static GtkWidget *
gtk_scale_button_scale_new (GtkScaleButton *button)
{
GtkScaleButtonPrivate *priv = button->priv;
GtkScaleButtonScale *scale;
scale = g_object_new (GTK_TYPE_SCALE_BUTTON_SCALE,
"orientation", priv->orientation,
"adjustment", priv->adjustment,
"draw-value", FALSE,
NULL);
scale->button = button;
g_signal_connect (scale, "grab-notify",
G_CALLBACK (cb_scale_grab_notify), button);
if (priv->orientation == GTK_ORIENTATION_VERTICAL)
{
gtk_widget_set_size_request (GTK_WIDGET (scale), -1, SCALE_SIZE);
gtk_range_set_inverted (GTK_RANGE (scale), TRUE);
}
else
{
gtk_widget_set_size_request (GTK_WIDGET (scale), SCALE_SIZE, -1);
gtk_range_set_inverted (GTK_RANGE (scale), FALSE);
}
return GTK_WIDGET (scale);
}
static gboolean
gtk_scale_button_scale_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkScaleButtonPrivate *priv = GTK_SCALE_BUTTON_SCALE (widget)->button->priv;
/* the scale will grab input; if we have input grabbed, all goes
* horribly wrong, so let's not do that.
*/
gtk_grab_remove (priv->dock);
return GTK_WIDGET_CLASS (_gtk_scale_button_scale_parent_class)->button_press_event (widget, event);
}
static gboolean
gtk_scale_button_scale_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkScaleButton *button = GTK_SCALE_BUTTON_SCALE (widget)->button;
gboolean res;
if (button->priv->timeout)
{
/* if we did a quick click, leave the window open; else, hide it */
if (event->time > button->priv->pop_time + button->priv->click_timeout)
{
gtk_scale_button_release_grab (button, event);
GTK_WIDGET_CLASS (_gtk_scale_button_scale_parent_class)->button_release_event (widget, event);
return TRUE;
}
button->priv->timeout = FALSE;
}
res = GTK_WIDGET_CLASS (_gtk_scale_button_scale_parent_class)->button_release_event (widget, event);
/* the scale will release input; right after that, we *have to* grab
* it back so we can catch out-of-scale clicks and hide the popup,
* so I basically want a g_signal_connect_after_always(), but I can't
* find that, so we do this complex 'first-call-parent-then-do-actual-
* action' thingy...
*/
gtk_grab_add (button->priv->dock);
return res;
}
static void
gtk_scale_button_update_icon (GtkScaleButton *button)
{
GtkScaleButtonPrivate *priv;
GtkRange *range;
GtkAdjustment *adj;
gdouble value;
const gchar *name;
guint num_icons;
priv = button->priv;
if (!priv->icon_list || priv->icon_list[0] == '\0')
{
gtk_image_set_from_stock (GTK_IMAGE (priv->image),
GTK_STOCK_MISSING_IMAGE,
priv->size);
return;
}
num_icons = g_strv_length (priv->icon_list);
/* The 1-icon special case */
if (num_icons == 1)
{
gtk_image_set_from_icon_name (GTK_IMAGE (priv->image),
priv->icon_list[0],
priv->size);
return;
}
range = GTK_RANGE (priv->scale);
adj = priv->adjustment;
value = gtk_scale_button_get_value (button);
/* The 2-icons special case */
if (num_icons == 2)
{
gdouble limit;
limit = (adj->upper - adj->lower) / 2 + adj->lower;
if (value < limit)
name = priv->icon_list[0];
else
name = priv->icon_list[1];
gtk_image_set_from_icon_name (GTK_IMAGE (priv->image),
name,
priv->size);
return;
}
/* With 3 or more icons */
if (value == adj->lower)
{
name = priv->icon_list[0];
}
else if (value == adj->upper)
{
name = priv->icon_list[1];
}
else
{
gdouble step;
guint i;
step = (adj->upper - adj->lower) / (num_icons - 2);
i = (guint) ((value - adj->lower) / step) + 2;
g_assert (i < num_icons);
name = priv->icon_list[i];
}
gtk_image_set_from_icon_name (GTK_IMAGE (priv->image),
name,
priv->size);
}
static void
gtk_scale_button_scale_value_changed (GtkRange *range)
{
GtkScaleButton *button = GTK_SCALE_BUTTON_SCALE (range)->button;
gdouble value;
value = gtk_range_get_value (range);
gtk_scale_button_update_icon (button);
g_signal_emit (button, signals[VALUE_CHANGED], 0, value);
g_object_notify (G_OBJECT (button), "value");
}
#define __GTK_SCALE_BUTTON_C__
#include "gtkaliasdef.c"
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