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gtk2/gtk/gtkbutton.c
PDT 1998 Shawn T. Amundson 92006c8e78 Changed LGPL address for FSF in all .h and .c files 
Sun Apr 12 18:54:29 PDT 1998 Shawn T. Amundson <amundson@gtk.org>

        * Changed LGPL address for FSF in all .h and .c files
1998-04-13 02:02:47 +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 Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*/
#include <string.h>
#include "gtkbutton.h"
#include "gtklabel.h"
#include "gtkmain.h"
#include "gtksignal.h"
#define CHILD_SPACING 1
#define DEFAULT_LEFT_POS 4
#define DEFAULT_TOP_POS 4
#define DEFAULT_SPACING 7
enum {
PRESSED,
RELEASED,
CLICKED,
ENTER,
LEAVE,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_LABEL
};
static void gtk_button_class_init (GtkButtonClass *klass);
static void gtk_button_init (GtkButton *button);
static void gtk_button_set_arg (GtkButton *button,
GtkArg *arg,
guint arg_id);
static void gtk_button_map (GtkWidget *widget);
static void gtk_button_unmap (GtkWidget *widget);
static void gtk_button_realize (GtkWidget *widget);
static void gtk_button_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_button_paint (GtkWidget *widget,
GdkRectangle *area);
static void gtk_button_draw (GtkWidget *widget,
GdkRectangle *area);
static void gtk_button_draw_focus (GtkWidget *widget);
static void gtk_button_draw_default (GtkWidget *widget);
static gint gtk_button_expose (GtkWidget *widget,
GdkEventExpose *event);
static gint gtk_button_button_press (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_button_button_release (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_button_enter_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gint gtk_button_leave_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gint gtk_button_focus_in (GtkWidget *widget,
GdkEventFocus *event);
static gint gtk_button_focus_out (GtkWidget *widget,
GdkEventFocus *event);
static void gtk_button_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_button_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_button_foreach (GtkContainer *container,
GtkCallback callback,
gpointer callback_data);
static void gtk_real_button_pressed (GtkButton *button);
static void gtk_real_button_released (GtkButton *button);
static void gtk_real_button_enter (GtkButton *button);
static void gtk_real_button_leave (GtkButton *button);
static GtkContainerClass *parent_class;
static guint button_signals[LAST_SIGNAL] = { 0 };
guint
gtk_button_get_type ()
{
static guint button_type = 0;
if (!button_type)
{
GtkTypeInfo button_info =
{
"GtkButton",
sizeof (GtkButton),
sizeof (GtkButtonClass),
(GtkClassInitFunc) gtk_button_class_init,
(GtkObjectInitFunc) gtk_button_init,
(GtkArgSetFunc) gtk_button_set_arg,
(GtkArgGetFunc) NULL,
};
button_type = gtk_type_unique (gtk_container_get_type (), &button_info);
}
return button_type;
}
static void
gtk_button_class_init (GtkButtonClass *klass)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
object_class = (GtkObjectClass*) klass;
widget_class = (GtkWidgetClass*) klass;
container_class = (GtkContainerClass*) klass;
parent_class = gtk_type_class (gtk_container_get_type ());
gtk_object_add_arg_type ("GtkButton::label", GTK_TYPE_STRING, GTK_ARG_WRITABLE, ARG_LABEL);
button_signals[PRESSED] =
gtk_signal_new ("pressed",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkButtonClass, pressed),
gtk_signal_default_marshaller,
GTK_TYPE_NONE, 0);
button_signals[RELEASED] =
gtk_signal_new ("released",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkButtonClass, released),
gtk_signal_default_marshaller,
GTK_TYPE_NONE, 0);
button_signals[CLICKED] =
gtk_signal_new ("clicked",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkButtonClass, clicked),
gtk_signal_default_marshaller,
GTK_TYPE_NONE, 0);
button_signals[ENTER] =
gtk_signal_new ("enter",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkButtonClass, enter),
gtk_signal_default_marshaller,
GTK_TYPE_NONE, 0);
button_signals[LEAVE] =
gtk_signal_new ("leave",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkButtonClass, leave),
gtk_signal_default_marshaller,
GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (object_class, button_signals, LAST_SIGNAL);
widget_class->activate_signal = button_signals[CLICKED];
widget_class->map = gtk_button_map;
widget_class->unmap = gtk_button_unmap;
widget_class->realize = gtk_button_realize;
widget_class->draw = gtk_button_draw;
widget_class->draw_focus = gtk_button_draw_focus;
widget_class->draw_default = gtk_button_draw_default;
widget_class->size_request = gtk_button_size_request;
widget_class->size_allocate = gtk_button_size_allocate;
widget_class->expose_event = gtk_button_expose;
widget_class->button_press_event = gtk_button_button_press;
widget_class->button_release_event = gtk_button_button_release;
widget_class->enter_notify_event = gtk_button_enter_notify;
widget_class->leave_notify_event = gtk_button_leave_notify;
widget_class->focus_in_event = gtk_button_focus_in;
widget_class->focus_out_event = gtk_button_focus_out;
container_class->add = gtk_button_add;
container_class->remove = gtk_button_remove;
container_class->foreach = gtk_button_foreach;
klass->pressed = gtk_real_button_pressed;
klass->released = gtk_real_button_released;
klass->clicked = NULL;
klass->enter = gtk_real_button_enter;
klass->leave = gtk_real_button_leave;
}
static void
gtk_button_init (GtkButton *button)
{
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_FOCUS);
button->child = NULL;
button->in_button = FALSE;
button->button_down = FALSE;
}
static void
gtk_button_set_arg (GtkButton *button,
GtkArg *arg,
guint arg_id)
{
GtkWidget *label;
switch (arg_id)
{
case ARG_LABEL:
gtk_container_disable_resize (GTK_CONTAINER (button));
if (button->child)
{
gtk_widget_unparent (button->child);
button->child = NULL;
}
label = gtk_label_new (GTK_VALUE_STRING(*arg));
gtk_widget_show (label);
gtk_container_add (GTK_CONTAINER (button), label);
gtk_container_enable_resize (GTK_CONTAINER (button));
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
GtkWidget*
gtk_button_new ()
{
return GTK_WIDGET (gtk_type_new (gtk_button_get_type ()));
}
GtkWidget*
gtk_button_new_with_label (const gchar *label)
{
GtkWidget *button;
GtkWidget *label_widget;
button = gtk_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 (button), label_widget);
gtk_widget_show (label_widget);
return button;
}
void
gtk_button_pressed (GtkButton *button)
{
gtk_signal_emit (GTK_OBJECT (button), button_signals[PRESSED]);
}
void
gtk_button_released (GtkButton *button)
{
gtk_signal_emit (GTK_OBJECT (button), button_signals[RELEASED]);
}
void
gtk_button_clicked (GtkButton *button)
{
gtk_signal_emit (GTK_OBJECT (button), button_signals[CLICKED]);
}
void
gtk_button_enter (GtkButton *button)
{
gtk_signal_emit (GTK_OBJECT (button), button_signals[ENTER]);
}
void
gtk_button_leave (GtkButton *button)
{
gtk_signal_emit (GTK_OBJECT (button), button_signals[LEAVE]);
}
static void
gtk_button_map (GtkWidget *widget)
{
GtkButton *button;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_BUTTON (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
gdk_window_show (widget->window);
button = GTK_BUTTON (widget);
if (button->child &&
GTK_WIDGET_VISIBLE (button->child) &&
!GTK_WIDGET_MAPPED (button->child))
gtk_widget_map (button->child);
}
static void
gtk_button_unmap (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_BUTTON (widget));
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
gdk_window_hide (widget->window);
}
static void
gtk_button_realize (GtkWidget *widget)
{
GtkButton *button;
GdkWindowAttr attributes;
gint attributes_mask;
gint border_width;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_BUTTON (widget));
button = GTK_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.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
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);
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
gdk_window_set_user_data (widget->window, button);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}
static void
gtk_button_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkButton *button;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_BUTTON (widget));
g_return_if_fail (requisition != NULL);
button = GTK_BUTTON (widget);
requisition->width = (GTK_CONTAINER (widget)->border_width + CHILD_SPACING +
GTK_WIDGET (widget)->style->klass->xthickness) * 2;
requisition->height = (GTK_CONTAINER (widget)->border_width + CHILD_SPACING +
GTK_WIDGET (widget)->style->klass->ythickness) * 2;
if (GTK_WIDGET_CAN_DEFAULT (widget))
{
requisition->width += (GTK_WIDGET (widget)->style->klass->xthickness * 2 +
DEFAULT_SPACING);
requisition->height += (GTK_WIDGET (widget)->style->klass->ythickness * 2 +
DEFAULT_SPACING);
}
if (button->child && GTK_WIDGET_VISIBLE (button->child))
{
gtk_widget_size_request (button->child, &button->child->requisition);
requisition->width += button->child->requisition.width;
requisition->height += button->child->requisition.height;
}
}
static void
gtk_button_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkButton *button;
GtkAllocation child_allocation;
gint border_width;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_BUTTON (widget));
g_return_if_fail (allocation != NULL);
widget->allocation = *allocation;
border_width = GTK_CONTAINER (widget)->border_width;
if (GTK_WIDGET_REALIZED (widget))
gdk_window_move_resize (widget->window,
widget->allocation.x + border_width,
widget->allocation.y + border_width,
widget->allocation.width - border_width * 2,
widget->allocation.height - border_width * 2);
button = GTK_BUTTON (widget);
if (button->child && GTK_WIDGET_VISIBLE (button->child))
{
child_allocation.x = (CHILD_SPACING + GTK_WIDGET (widget)->style->klass->xthickness);
child_allocation.y = (CHILD_SPACING + GTK_WIDGET (widget)->style->klass->ythickness);
child_allocation.width = MAX (1, widget->allocation.width - child_allocation.x * 2 -
border_width * 2);
child_allocation.height = MAX (1, widget->allocation.height - child_allocation.y * 2 -
border_width * 2);
if (GTK_WIDGET_CAN_DEFAULT (button))
{
child_allocation.x += (GTK_WIDGET (widget)->style->klass->xthickness +
DEFAULT_LEFT_POS);
child_allocation.y += (GTK_WIDGET (widget)->style->klass->ythickness +
DEFAULT_TOP_POS);
child_allocation.width = MAX (1, child_allocation.width -
(GTK_WIDGET (widget)->style->klass->xthickness * 2 + DEFAULT_SPACING));
child_allocation.height = MAX (1, child_allocation.height -
(GTK_WIDGET (widget)->style->klass->xthickness * 2 + DEFAULT_SPACING));
}
gtk_widget_size_allocate (button->child, &child_allocation);
}
}
static void
gtk_button_paint (GtkWidget *widget,
GdkRectangle *area)
{
GdkRectangle restrict_area;
GdkRectangle new_area;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_BUTTON (widget));
if (GTK_WIDGET_DRAWABLE (widget))
{
restrict_area.x = GTK_WIDGET (widget)->style->klass->xthickness;
restrict_area.y = GTK_WIDGET (widget)->style->klass->ythickness;
restrict_area.width = GTK_WIDGET (widget)->allocation.width -
restrict_area.x * 2 - GTK_CONTAINER (widget)->border_width * 2;
restrict_area.height = GTK_WIDGET (widget)->allocation.height -
restrict_area.y * 2 - GTK_CONTAINER (widget)->border_width * 2;
if (GTK_WIDGET_CAN_DEFAULT (widget))
{
restrict_area.x += DEFAULT_LEFT_POS;
restrict_area.y += DEFAULT_TOP_POS;
restrict_area.width -= DEFAULT_SPACING;
restrict_area.height -= DEFAULT_SPACING;
}
if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
{
gtk_style_set_background (widget->style, widget->window, GTK_WIDGET_STATE (widget));
gdk_window_clear_area (widget->window,
new_area.x, new_area.y,
new_area.width, new_area.height);
}
}
}
static void
gtk_button_draw (GtkWidget *widget,
GdkRectangle *area)
{
GtkButton *button;
GdkRectangle child_area;
GdkRectangle tmp_area;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_BUTTON (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
button = GTK_BUTTON (widget);
tmp_area = *area;
tmp_area.x -= GTK_CONTAINER (button)->border_width;
tmp_area.y -= GTK_CONTAINER (button)->border_width;
gtk_button_paint (widget, &tmp_area);
if (button->child && gtk_widget_intersect (button->child, &tmp_area, &child_area))
gtk_widget_draw (button->child, &child_area);
gtk_widget_draw_default (widget);
gtk_widget_draw_focus (widget);
}
}
static void
gtk_button_draw_focus (GtkWidget *widget)
{
GtkButton *button;
GtkShadowType shadow_type;
gint width, height;
gint x, y;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_BUTTON (widget));
if (GTK_WIDGET_DRAWABLE (widget))
{
button = GTK_BUTTON (widget);
x = 0;
y = 0;
width = widget->allocation.width - GTK_CONTAINER (widget)->border_width * 2;
height = widget->allocation.height - GTK_CONTAINER (widget)->border_width * 2;
if (GTK_WIDGET_CAN_DEFAULT (widget))
{
x += widget->style->klass->xthickness;
y += widget->style->klass->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))
{
x += 1;
y += 1;
width -= 2;
height -= 2;
}
else
{
if (GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE)
gdk_draw_rectangle (widget->window,
widget->style->bg_gc[GTK_WIDGET_STATE (widget)], FALSE,
x + 1, y + 1, width - 4, height - 4);
else
gdk_draw_rectangle (widget->window,
widget->style->bg_gc[GTK_WIDGET_STATE (widget)], FALSE,
x + 2, y + 2, width - 5, height - 5);
}
if (GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE)
shadow_type = GTK_SHADOW_IN;
else
shadow_type = GTK_SHADOW_OUT;
gtk_draw_shadow (widget->style, widget->window,
GTK_WIDGET_STATE (widget), shadow_type,
x, y, width, height);
if (GTK_WIDGET_HAS_FOCUS (widget))
{
x -= 1;
y -= 1;
width += 2;
height += 2;
gdk_draw_rectangle (widget->window,
widget->style->black_gc, FALSE,
x, y, width - 1, height - 1);
}
}
}
static void
gtk_button_draw_default (GtkWidget *widget)
{
gint width, height;
gint x, y;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_BUTTON (widget));
if (GTK_WIDGET_DRAWABLE (widget))
{
x = 0;
y = 0;
width = widget->allocation.width - GTK_CONTAINER (widget)->border_width * 2;
height = widget->allocation.height - GTK_CONTAINER (widget)->border_width * 2;
if (GTK_WIDGET_HAS_DEFAULT (widget))
{
gtk_draw_shadow (widget->style, widget->window,
GTK_STATE_NORMAL, GTK_SHADOW_IN,
x, y, width, height);
}
else
{
gdk_draw_rectangle (widget->window, widget->style->bg_gc[GTK_STATE_NORMAL],
FALSE, x, y, width - 1, height - 1);
gdk_draw_rectangle (widget->window, widget->style->bg_gc[GTK_STATE_NORMAL],
FALSE, x + 1, y + 1, width - 3, height - 3);
}
}
}
static gint
gtk_button_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkButton *button;
GdkEventExpose child_event;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
button = GTK_BUTTON (widget);
gtk_button_paint (widget, &event->area);
child_event = *event;
if (button->child && GTK_WIDGET_NO_WINDOW (button->child) &&
gtk_widget_intersect (button->child, &event->area, &child_event.area))
gtk_widget_event (button->child, (GdkEvent*) &child_event);
gtk_widget_draw_default (widget);
gtk_widget_draw_focus (widget);
}
return FALSE;
}
static gint
gtk_button_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkButton *button;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (event->type == GDK_BUTTON_PRESS)
{
button = GTK_BUTTON (widget);
if (GTK_WIDGET_CAN_DEFAULT (widget) && (event->button == 1))
gtk_widget_grab_default (widget);
if (!GTK_WIDGET_HAS_FOCUS (widget))
gtk_widget_grab_focus (widget);
if (event->button == 1)
{
gtk_grab_add (GTK_WIDGET (button));
gtk_button_pressed (button);
}
}
return TRUE;
}
static gint
gtk_button_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkButton *button;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (event->button == 1)
{
button = GTK_BUTTON (widget);
gtk_grab_remove (GTK_WIDGET (button));
gtk_button_released (button);
}
return TRUE;
}
static gint
gtk_button_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkButton *button;
GtkWidget *event_widget;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
button = GTK_BUTTON (widget);
event_widget = gtk_get_event_widget ((GdkEvent*) event);
if ((event_widget == widget) &&
(event->detail != GDK_NOTIFY_INFERIOR))
{
button->in_button = TRUE;
gtk_button_enter (button);
}
return FALSE;
}
static gint
gtk_button_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkButton *button;
GtkWidget *event_widget;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
button = GTK_BUTTON (widget);
event_widget = gtk_get_event_widget ((GdkEvent*) event);
if ((event_widget == widget) &&
(event->detail != GDK_NOTIFY_INFERIOR))
{
button->in_button = FALSE;
gtk_button_leave (button);
}
return FALSE;
}
static gint
gtk_button_focus_in (GtkWidget *widget,
GdkEventFocus *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
gtk_widget_draw_focus (widget);
return FALSE;
}
static gint
gtk_button_focus_out (GtkWidget *widget,
GdkEventFocus *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_BUTTON (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
gtk_widget_draw_focus (widget);
return FALSE;
}
static void
gtk_button_add (GtkContainer *container,
GtkWidget *widget)
{
GtkButton *button;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_BUTTON (container));
g_return_if_fail (widget != NULL);
g_return_if_fail (gtk_widget_basic (widget));
button = GTK_BUTTON (container);
if (!button->child)
{
gtk_widget_set_parent (widget, GTK_WIDGET (container));
if (GTK_WIDGET_VISIBLE (widget->parent))
{
if (GTK_WIDGET_REALIZED (widget->parent) &&
!GTK_WIDGET_REALIZED (widget))
gtk_widget_realize (widget);
if (GTK_WIDGET_MAPPED (widget->parent) &&
!GTK_WIDGET_MAPPED (widget))
gtk_widget_map (widget);
}
button->child = widget;
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
gtk_widget_queue_resize (widget);
}
}
static void
gtk_button_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkButton *button;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_BUTTON (container));
g_return_if_fail (widget != NULL);
button = GTK_BUTTON (container);
if (button->child == widget)
{
gboolean widget_was_visible = GTK_WIDGET_VISIBLE(widget);
gtk_widget_unparent (widget);
button->child = NULL;
if (widget_was_visible && GTK_WIDGET_VISIBLE (container))
gtk_widget_queue_resize (GTK_WIDGET (container));
}
}
static void
gtk_button_foreach (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
GtkButton *button;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_BUTTON (container));
g_return_if_fail (callback != NULL);
button = GTK_BUTTON (container);
if (button->child)
(* callback) (button->child, callback_data);
}
static void
gtk_real_button_pressed (GtkButton *button)
{
GtkStateType new_state;
g_return_if_fail (button != NULL);
g_return_if_fail (GTK_IS_BUTTON (button));
button->button_down = TRUE;
new_state = (button->in_button ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL);
if (GTK_WIDGET_STATE (button) != new_state)
{
gtk_widget_set_state (GTK_WIDGET (button), new_state);
gtk_widget_queue_draw (GTK_WIDGET (button));
}
}
static void
gtk_real_button_released (GtkButton *button)
{
GtkStateType new_state;
g_return_if_fail (button != NULL);
g_return_if_fail (GTK_IS_BUTTON (button));
if (button->button_down)
{
button->button_down = FALSE;
if (button->in_button)
gtk_button_clicked (button);
new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);
if (GTK_WIDGET_STATE (button) != new_state)
{
gtk_widget_set_state (GTK_WIDGET (button), new_state);
/* We _draw () instead of queue_draw so that if the operation
* blocks, the label doesn't vanish.
*/
gtk_widget_draw (GTK_WIDGET (button), NULL);
}
}
}
static void
gtk_real_button_enter (GtkButton *button)
{
GtkStateType new_state;
g_return_if_fail (button != NULL);
g_return_if_fail (GTK_IS_BUTTON (button));
new_state = (button->button_down ? GTK_STATE_ACTIVE : GTK_STATE_PRELIGHT);
if (GTK_WIDGET_STATE (button) != new_state)
{
gtk_widget_set_state (GTK_WIDGET (button), new_state);
gtk_widget_queue_draw (GTK_WIDGET (button));
}
}
static void
gtk_real_button_leave (GtkButton *button)
{
g_return_if_fail (button != NULL);
g_return_if_fail (GTK_IS_BUTTON (button));
if (GTK_WIDGET_STATE (button) != GTK_STATE_NORMAL)
{
gtk_widget_set_state (GTK_WIDGET (button), GTK_STATE_NORMAL);
gtk_widget_queue_draw (GTK_WIDGET (button));
}
}
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