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gtk2/gtk/gtktogglebutton.c
Owen Taylor b94e6c0a80 Add optional movement on push to buttons (based on patch from Soeren 
Sat Aug 25 19:02:39 2001  Owen Taylor  <otaylor@redhat.com>

        * gtk/gtkbutton.[ch] gtk/gtktogglebutton.c: Add optional movement
        on push to buttons (based on patch from Soeren Sandmann, #54720)

          - Add child_displacement_x/y style properties to control how far the
            child moves when the button is depressed.

          - Add non-exported function _gtk_button_set_depressed to clean
            up the handling of the in/out shadow and separate it frmo
            widget->state.

          - Lots of code cleanup and simplification of state handling
            for GtkButton/GtkToggleButton.

        * tests/testgtkrc: Set the x/y displacement to 1 to provide a test
        of button movement. testgtk + testgtkrc == test ugly GTK+, as always.
2001-08-25 23:11:46 +00:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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 1997-2000. 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 "gtklabel.h"
#include "gtkmain.h"
#include "gtksignal.h"
#include "gtktogglebutton.h"
#include "gtkintl.h"
#define DEFAULT_LEFT_POS 4
#define DEFAULT_TOP_POS 4
#define DEFAULT_SPACING 7
enum {
TOGGLED,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_ACTIVE,
PROP_INCONSISTENT,
PROP_DRAW_INDICATOR
};
static void gtk_toggle_button_class_init (GtkToggleButtonClass *klass);
static void gtk_toggle_button_init (GtkToggleButton *toggle_button);
static void gtk_toggle_button_paint (GtkWidget *widget,
GdkRectangle *area);
static void gtk_toggle_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gint gtk_toggle_button_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_toggle_button_pressed (GtkButton *button);
static void gtk_toggle_button_released (GtkButton *button);
static void gtk_toggle_button_clicked (GtkButton *button);
static void gtk_toggle_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_toggle_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_toggle_button_realize (GtkWidget *widget);
static void gtk_toggle_button_unrealize (GtkWidget *widget);
static void gtk_toggle_button_map (GtkWidget *widget);
static void gtk_toggle_button_unmap (GtkWidget *widget);
static void gtk_toggle_button_update_state (GtkButton *button);
static guint toggle_button_signals[LAST_SIGNAL] = { 0 };
static GtkContainerClass *parent_class = NULL;
GtkType
gtk_toggle_button_get_type (void)
{
static GtkType toggle_button_type = 0;
if (!toggle_button_type)
{
static const GtkTypeInfo toggle_button_info =
{
"GtkToggleButton",
sizeof (GtkToggleButton),
sizeof (GtkToggleButtonClass),
(GtkClassInitFunc) gtk_toggle_button_class_init,
(GtkObjectInitFunc) gtk_toggle_button_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
toggle_button_type = gtk_type_unique (GTK_TYPE_BUTTON, &toggle_button_info);
}
return toggle_button_type;
}
static void
gtk_toggle_button_class_init (GtkToggleButtonClass *class)
{
GtkObjectClass *object_class;
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
GtkButtonClass *button_class;
object_class = (GtkObjectClass*) class;
gobject_class = G_OBJECT_CLASS (class);
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
button_class = (GtkButtonClass*) class;
parent_class = gtk_type_class (GTK_TYPE_BUTTON);
gobject_class->set_property = gtk_toggle_button_set_property;
gobject_class->get_property = gtk_toggle_button_get_property;
widget_class->size_allocate = gtk_toggle_button_size_allocate;
widget_class->expose_event = gtk_toggle_button_expose;
widget_class->realize = gtk_toggle_button_realize;
widget_class->unrealize = gtk_toggle_button_unrealize;
widget_class->map = gtk_toggle_button_map;
widget_class->unmap = gtk_toggle_button_unmap;
button_class->pressed = gtk_toggle_button_pressed;
button_class->released = gtk_toggle_button_released;
button_class->clicked = gtk_toggle_button_clicked;
button_class->enter = gtk_toggle_button_update_state;
button_class->leave = gtk_toggle_button_update_state;
class->toggled = NULL;
g_object_class_install_property (gobject_class,
PROP_ACTIVE,
g_param_spec_boolean ("active",
_("Active"),
_("If the toggle button should be pressed in or not"),
FALSE,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_INCONSISTENT,
g_param_spec_boolean ("inconsistent",
_("Inconsistent"),
_("If the toggle button is in an \"in between\" state."),
FALSE,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_DRAW_INDICATOR,
g_param_spec_boolean ("draw_indicator",
_("Draw Indicator"),
_("If the toggle part of the button is displayed"),
FALSE,
G_PARAM_READWRITE));
toggle_button_signals[TOGGLED] =
gtk_signal_new ("toggled",
GTK_RUN_FIRST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkToggleButtonClass, toggled),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
}
static void
gtk_toggle_button_init (GtkToggleButton *toggle_button)
{
toggle_button->active = FALSE;
toggle_button->draw_indicator = FALSE;
GTK_WIDGET_UNSET_FLAGS (toggle_button, GTK_NO_WINDOW);
}
GtkWidget*
gtk_toggle_button_new (void)
{
return GTK_WIDGET (gtk_type_new (gtk_toggle_button_get_type ()));
}
GtkWidget*
gtk_toggle_button_new_with_label (const gchar *label)
{
GtkWidget *toggle_button;
GtkWidget *label_widget;
toggle_button = gtk_toggle_button_new ();
label_widget = gtk_label_new (label);
gtk_misc_set_alignment (GTK_MISC (label_widget), 0.5, 0.5);
gtk_container_add (GTK_CONTAINER (toggle_button), label_widget);
gtk_widget_show (label_widget);
return toggle_button;
}
/**
* gtk_toggle_button_new_with_mnemonic:
* @label: the text of the button, with an underscore in front of the
* mnemonic character
* @returns: a new #GtkToggleButton
*
* Creates a new #GtkToggleButton containing a label. The label
* will be created using gtk_label_new_with_mnemonic(), so underscores
* in @label indicate the mnemonic for the button.
**/
GtkWidget*
gtk_toggle_button_new_with_mnemonic (const gchar *label)
{
GtkWidget *toggle_button;
GtkWidget *label_widget;
toggle_button = gtk_toggle_button_new ();
label_widget = gtk_label_new_with_mnemonic (label);
gtk_misc_set_alignment (GTK_MISC (label_widget), 0.5, 0.5);
gtk_container_add (GTK_CONTAINER (toggle_button), label_widget);
gtk_widget_show (label_widget);
return toggle_button;
}
static void
gtk_toggle_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkToggleButton *tb;
tb = GTK_TOGGLE_BUTTON (object);
switch (prop_id)
{
case PROP_ACTIVE:
gtk_toggle_button_set_active (tb, g_value_get_boolean (value));
break;
case PROP_INCONSISTENT:
gtk_toggle_button_set_inconsistent (tb, g_value_get_boolean (value));
break;
case PROP_DRAW_INDICATOR:
gtk_toggle_button_set_mode (tb, g_value_get_boolean (value));
break;
default:
break;
}
}
static void
gtk_toggle_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkToggleButton *tb;
tb = GTK_TOGGLE_BUTTON (object);
switch (prop_id)
{
case PROP_ACTIVE:
g_value_set_boolean (value, tb->active);
break;
case PROP_INCONSISTENT:
g_value_set_boolean (value, tb->inconsistent);
break;
case PROP_DRAW_INDICATOR:
g_value_set_boolean (value, tb->draw_indicator);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
void
gtk_toggle_button_set_mode (GtkToggleButton *toggle_button,
gboolean draw_indicator)
{
GtkWidget *widget;
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
widget = GTK_WIDGET (toggle_button);
draw_indicator = draw_indicator ? TRUE : FALSE;
if (toggle_button->draw_indicator != draw_indicator)
{
if (GTK_WIDGET_REALIZED (toggle_button))
{
gboolean visible = GTK_WIDGET_VISIBLE (toggle_button);
if (visible)
gtk_widget_hide (widget);
gtk_widget_unrealize (widget);
toggle_button->draw_indicator = draw_indicator;
if (toggle_button->draw_indicator)
GTK_WIDGET_SET_FLAGS (toggle_button, GTK_NO_WINDOW);
else
GTK_WIDGET_UNSET_FLAGS (toggle_button, GTK_NO_WINDOW);
gtk_widget_realize (widget);
if (visible)
gtk_widget_show (widget);
}
else
{
toggle_button->draw_indicator = draw_indicator;
if (toggle_button->draw_indicator)
GTK_WIDGET_SET_FLAGS (toggle_button, GTK_NO_WINDOW);
else
GTK_WIDGET_UNSET_FLAGS (toggle_button, GTK_NO_WINDOW);
}
if (GTK_WIDGET_VISIBLE (toggle_button))
gtk_widget_queue_resize (GTK_WIDGET (toggle_button));
g_object_notify (G_OBJECT (toggle_button), "draw_indicator");
}
}
/**
* gtk_toggle_button_get_mode:
* @toggle_button: a #GtkToggleButton
*
* Retrieves whether the button is displayed as a separate indicator
* and label. See gtk_toggle_button_set_mode().
*
* Return value: %TRUE if the togglebutton is drawn as a separate indicator
* and label.
**/
gboolean
gtk_toggle_button_get_mode (GtkToggleButton *toggle_button)
{
g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);
return toggle_button->draw_indicator;
}
void
gtk_toggle_button_set_active (GtkToggleButton *toggle_button,
gboolean is_active)
{
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
is_active = is_active != FALSE;
if (toggle_button->active != is_active)
gtk_button_clicked (GTK_BUTTON (toggle_button));
}
gboolean
gtk_toggle_button_get_active (GtkToggleButton *toggle_button)
{
g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);
return (toggle_button->active) ? TRUE : FALSE;
}
void
gtk_toggle_button_toggled (GtkToggleButton *toggle_button)
{
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
gtk_signal_emit (GTK_OBJECT (toggle_button), toggle_button_signals[TOGGLED]);
}
/**
* gtk_toggle_button_set_inconsistent:
* @toggle_button: a #GtkToggleButton
* @setting: %TRUE if state is inconsistent
*
* If the user has selected a range of elements (such as some text or
* spreadsheet cells) that are affected by a toggle button, and the
* current values in that range are inconsistent, you may want to
* display the toggle in an "in between" state. This function turns on
* "in between" display. Normally you would turn off the inconsistent
* state again if the user toggles the toggle button. This has to be
* done manually, gtk_toggle_button_set_inconsistent() only affects
* visual appearance, it doesn't affect the semantics of the button.
*
**/
void
gtk_toggle_button_set_inconsistent (GtkToggleButton *toggle_button,
gboolean setting)
{
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
setting = setting != FALSE;
if (setting != toggle_button->inconsistent)
{
toggle_button->inconsistent = setting;
gtk_toggle_button_update_state (GTK_BUTTON (toggle_button));
gtk_widget_queue_draw (GTK_WIDGET (toggle_button));
g_object_notify (G_OBJECT (toggle_button), "inconsistent");
}
}
/**
* gtk_toggle_button_get_inconsistent:
* @toggle_button: a #GtkToggleButton
*
* Gets the value set by gtk_toggle_button_set_inconsistent().
*
* Return value: %TRUE if the button is displayed as inconsistent, %FALSE otherwise
**/
gboolean
gtk_toggle_button_get_inconsistent (GtkToggleButton *toggle_button)
{
g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button), FALSE);
return toggle_button->inconsistent;
}
static void
gtk_toggle_button_paint (GtkWidget *widget,
GdkRectangle *area)
{
GtkButton *button;
GtkToggleButton *toggle_button;
GtkShadowType shadow_type;
GtkStateType state_type;
gint width, height;
gboolean interior_focus;
gint x, y;
button = GTK_BUTTON (widget);
toggle_button = GTK_TOGGLE_BUTTON (widget);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_widget_style_get (widget, "interior_focus", &interior_focus, NULL);
x = 0;
y = 0;
width = widget->allocation.width - GTK_CONTAINER (widget)->border_width * 2;
height = widget->allocation.height - GTK_CONTAINER (widget)->border_width * 2;
gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
if (GTK_WIDGET_HAS_DEFAULT (widget) &&
GTK_BUTTON (widget)->relief == GTK_RELIEF_NORMAL)
{
gtk_paint_box (widget->style, widget->window,
GTK_STATE_NORMAL, GTK_SHADOW_IN,
area, widget, "togglebuttondefault",
x, y, width, height);
}
if (GTK_WIDGET_CAN_DEFAULT (widget))
{
x += widget->style->xthickness;
y += widget->style->ythickness;
width -= 2 * x + DEFAULT_SPACING;
height -= 2 * y + DEFAULT_SPACING;
x += DEFAULT_LEFT_POS;
y += DEFAULT_TOP_POS;
}
if (GTK_WIDGET_HAS_FOCUS (widget) && !interior_focus)
{
x += 1;
y += 1;
width -= 2;
height -= 2;
}
state_type = GTK_WIDGET_STATE (widget);
if (toggle_button->inconsistent)
{
if (state_type == GTK_STATE_ACTIVE)
state_type = GTK_STATE_NORMAL;
shadow_type = GTK_SHADOW_ETCHED_IN;
}
else
shadow_type = button->depressed ? GTK_SHADOW_IN : GTK_SHADOW_OUT;
if (button->relief != GTK_RELIEF_NONE ||
(GTK_WIDGET_STATE(widget) != GTK_STATE_NORMAL &&
GTK_WIDGET_STATE(widget) != GTK_STATE_INSENSITIVE))
gtk_paint_box (widget->style, widget->window,
state_type,
shadow_type, area, widget, "togglebutton",
x, y, width, height);
if (GTK_WIDGET_HAS_FOCUS (widget))
{
if (interior_focus)
{
x += widget->style->xthickness + 1;
y += widget->style->xthickness + 1;
width -= 2 * (widget->style->xthickness + 1);
height -= 2 * (widget->style->ythickness + 1);
}
else
{
x -= 1;
y -= 1;
width += 2;
height += 2;
}
gtk_paint_focus (widget->style, widget->window,
area, widget, "togglebutton",
x, y, width - 1, height - 1);
}
}
}
static void
gtk_toggle_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
if (!GTK_WIDGET_NO_WINDOW (widget) &&
GTK_WIDGET_CLASS (parent_class)->size_allocate)
GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
}
static gint
gtk_toggle_button_expose (GtkWidget *widget,
GdkEventExpose *event)
{
if (GTK_WIDGET_DRAWABLE (widget))
{
GtkWidget *child = GTK_BIN (widget)->child;
gtk_toggle_button_paint (widget, &event->area);
if (child)
gtk_container_propagate_expose (GTK_CONTAINER (widget), child, event);
}
return TRUE;
}
static void
gtk_toggle_button_pressed (GtkButton *button)
{
button->button_down = TRUE;
gtk_toggle_button_update_state (button);
}
static void
gtk_toggle_button_released (GtkButton *button)
{
if (button->button_down)
{
button->button_down = FALSE;
if (button->in_button)
gtk_button_clicked (button);
gtk_toggle_button_update_state (button);
}
}
static void
gtk_toggle_button_clicked (GtkButton *button)
{
GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (button);
toggle_button->active = !toggle_button->active;
gtk_toggle_button_toggled (toggle_button);
gtk_toggle_button_update_state (button);
g_object_notify (G_OBJECT (toggle_button), "active");
}
static void
gtk_toggle_button_realize (GtkWidget *widget)
{
GtkToggleButton *toggle_button;
GdkWindowAttr attributes;
gint attributes_mask;
gint border_width;
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
toggle_button = GTK_TOGGLE_BUTTON (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
border_width = GTK_CONTAINER (widget)->border_width;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x + border_width;
attributes.y = widget->allocation.y + border_width;
attributes.width = widget->allocation.width - border_width * 2;
attributes.height = widget->allocation.height - border_width * 2;
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_EXPOSURE_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK);
if (GTK_WIDGET_NO_WINDOW (widget))
{
attributes.wclass = GDK_INPUT_ONLY;
attributes_mask = GDK_WA_X | GDK_WA_Y;
widget->window = gtk_widget_get_parent_window (widget);
gdk_window_ref (widget->window);
toggle_button->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (toggle_button->event_window, toggle_button);
}
else
{
attributes.wclass = GDK_INPUT_OUTPUT;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (widget->window, toggle_button);
}
widget->style = gtk_style_attach (widget->style, widget->window);
if (!GTK_WIDGET_NO_WINDOW (widget))
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}
static void
gtk_toggle_button_unrealize (GtkWidget *widget)
{
GtkToggleButton *toggle_button;
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
toggle_button = GTK_TOGGLE_BUTTON (widget);
if (GTK_WIDGET_NO_WINDOW (widget))
{
gdk_window_set_user_data (toggle_button->event_window, NULL);
gdk_window_destroy (toggle_button->event_window);
toggle_button->event_window = NULL;
}
if (GTK_WIDGET_CLASS (parent_class)->unrealize)
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static void
gtk_toggle_button_map (GtkWidget *widget)
{
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
if (GTK_WIDGET_NO_WINDOW (widget))
gdk_window_show (GTK_TOGGLE_BUTTON (widget)->event_window);
GTK_WIDGET_CLASS (parent_class)->map (widget);
}
static void
gtk_toggle_button_unmap (GtkWidget *widget)
{
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
if (GTK_WIDGET_NO_WINDOW (widget))
gdk_window_hide (GTK_TOGGLE_BUTTON (widget)->event_window);
GTK_WIDGET_CLASS (parent_class)->unmap (widget);
}
static void
gtk_toggle_button_update_state (GtkButton *button)
{
GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (button);
gboolean depressed;
GtkStateType new_state;
if (toggle_button->inconsistent)
depressed = FALSE;
else if (button->in_button && button->button_down)
depressed = !toggle_button->active;
else
depressed = toggle_button->active;
if (!button->button_down && button->in_button)
new_state = GTK_STATE_PRELIGHT;
else
new_state = depressed ? GTK_STATE_ACTIVE: GTK_STATE_NORMAL;
_gtk_button_set_depressed (button, depressed);
gtk_widget_set_state (GTK_WIDGET (toggle_button), new_state);
}
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