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gtk2/gtk/gtkbutton.c
Elliot Lee 060978e069 I submitted this patch twice to gtk-devel-list, and received no comments, 
I submitted this patch twice to gtk-devel-list, and received no comments, so
am committing it.  Although not exhaustively tested, I have been using this
gtk+ for a week w/o problems, and I did read the code to ensure that nothing
ever writes to these data structures. If by chance people encounter SEGV's in
gtk+ code that is setting values in global data structures, this patch could
be a possible culprit.

1998-11-30  Elliot Lee  <sopwith@cuc.ml.org>

	* {gdk,gtk}/*.c: Make read-only data structures "static const" to
	allow them to be shared, mainly including (but not limited to) the
	GtkTypeInfo structures for each class.

	* gtk/gtkfilesel.c: Add /net to the "leave me alone" directory listing.
1998-11-30 19:07:15 +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,
ARG_RELIEF
};
static void gtk_button_class_init (GtkButtonClass *klass);
static void gtk_button_init (GtkButton *button);
static void gtk_button_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_button_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
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_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 GtkType gtk_button_child_type (GtkContainer *container);
static GtkBinClass *parent_class = NULL;
static guint button_signals[LAST_SIGNAL] = { 0 };
GtkType
gtk_button_get_type (void)
{
static GtkType button_type = 0;
if (!button_type)
{
static const GtkTypeInfo button_info =
{
"GtkButton",
sizeof (GtkButton),
sizeof (GtkButtonClass),
(GtkClassInitFunc) gtk_button_class_init,
(GtkObjectInitFunc) gtk_button_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
button_type = gtk_type_unique (GTK_TYPE_BIN, &button_info);
gtk_type_set_chunk_alloc (button_type, 16);
}
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_TYPE_BIN);
gtk_object_add_arg_type ("GtkButton::label", GTK_TYPE_STRING, GTK_ARG_READWRITE, ARG_LABEL);
gtk_object_add_arg_type ("GtkButton::relief", GTK_TYPE_RELIEF_STYLE, GTK_ARG_READWRITE, ARG_RELIEF);
button_signals[PRESSED] =
gtk_signal_new ("pressed",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkButtonClass, pressed),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
button_signals[RELEASED] =
gtk_signal_new ("released",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkButtonClass, released),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
button_signals[CLICKED] =
gtk_signal_new ("clicked",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkButtonClass, clicked),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
button_signals[ENTER] =
gtk_signal_new ("enter",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkButtonClass, enter),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
button_signals[LEAVE] =
gtk_signal_new ("leave",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkButtonClass, leave),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (object_class, button_signals, LAST_SIGNAL);
object_class->set_arg = gtk_button_set_arg;
object_class->get_arg = gtk_button_get_arg;
widget_class->activate_signal = button_signals[CLICKED];
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->child_type = gtk_button_child_type;
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);
GTK_WIDGET_UNSET_FLAGS (button, GTK_NO_WINDOW);
button->child = NULL;
button->in_button = FALSE;
button->button_down = FALSE;
button->relief = GTK_RELIEF_NORMAL;
}
static GtkType
gtk_button_child_type (GtkContainer *container)
{
if (!GTK_BIN (container)->child)
return GTK_TYPE_WIDGET;
else
return GTK_TYPE_NONE;
}
static void
gtk_button_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkButton *button;
button = GTK_BUTTON (object);
switch (arg_id)
{
GtkWidget *child;
case ARG_LABEL:
child = GTK_BIN (button)->child;
if (!child)
child = gtk_widget_new (GTK_TYPE_LABEL,
"visible", TRUE,
"parent", button,
NULL);
if (GTK_IS_LABEL (child))
gtk_label_set (GTK_LABEL (child),
GTK_VALUE_STRING (*arg) ? GTK_VALUE_STRING (*arg) : "");
break;
case ARG_RELIEF:
gtk_button_set_relief (button, GTK_VALUE_ENUM (*arg));
break;
default:
break;
}
}
static void
gtk_button_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkButton *button;
button = GTK_BUTTON (object);
switch (arg_id)
{
case ARG_LABEL:
if (GTK_BIN (button)->child && GTK_IS_LABEL (GTK_BIN (button)->child))
GTK_VALUE_STRING (*arg) = g_strdup (GTK_LABEL (GTK_BIN (button)->child)->label);
else
GTK_VALUE_STRING (*arg) = NULL;
break;
case ARG_RELIEF:
GTK_VALUE_ENUM (*arg) = gtk_button_get_relief (button);
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
GtkWidget*
gtk_button_new (void)
{
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]);
}
void
gtk_button_set_relief (GtkButton *button,
GtkReliefStyle newrelief)
{
g_return_if_fail (button != NULL);
g_return_if_fail (GTK_IS_BUTTON (button));
button->relief = newrelief;
gtk_widget_queue_draw (GTK_WIDGET (button));
}
GtkReliefStyle
gtk_button_get_relief (GtkButton *button)
{
g_return_val_if_fail (button != NULL, GTK_RELIEF_NORMAL);
g_return_val_if_fail (GTK_IS_BUTTON (button), GTK_RELIEF_NORMAL);
return button->relief;
}
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 (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child))
{
gtk_widget_size_request (GTK_BIN (button)->child, &GTK_BIN (button)->child->requisition);
requisition->width += GTK_BIN (button)->child->requisition.width;
requisition->height += GTK_BIN (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 (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (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 (GTK_BIN (button)->child, &child_allocation);
}
}
/*
* +------------------------------------------------+
* | BORDER |
* | +------------------------------------------+ |
* | |\\\\\\\\\\\\\\\\DEFAULT\\\\\\\\\\\\\\\\\ | |
* | |\\+------------------------------------+ | |
* | |\\| | SPACING 3 | | | |
* | |\\| +--------------------------------+ | | |
* | |\\| |########## FOCUS ###############| | | |
* | |\\| |#+----------------------------+#| | | |
* | |\\| |#| RELIEF \|#| | | |
* | |\\| |#| +-----------------------+\|#| | | |
* | |\\|1|#| + THE TEXT +\|#|2| | |
* | |\\| |#| +-----------------------+\|#| | | |
* | |\\| |#| \\\\\ ythickness \\\\\\\\\\|#| | | |
* | |\\| |#+----------------------------+#| | | |
* | |\\| |########### 1 ##################| | | |
* | |\\| +--------------------------------+ | | |
* | |\\| | default spacing 4 | | | |
* | |\\+------------------------------------+ | |
* | |\ ythickness | |
* | +------------------------------------------+ |
* | border_width |
* +------------------------------------------------+
*/
static void
gtk_button_paint (GtkWidget *widget,
GdkRectangle *area)
{
GtkButton *button;
GtkShadowType shadow_type;
gint width, height;
gint x, y;
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;
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, "buttondefault",
x, y, width, height);
}
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;
}
if (GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE)
shadow_type = GTK_SHADOW_IN;
else
shadow_type = 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,
GTK_WIDGET_STATE (widget),
shadow_type, area, widget, "button",
x, y, width, height);
if (GTK_WIDGET_HAS_FOCUS (widget))
{
x -= 1;
y -= 1;
width += 2;
height += 2;
gtk_paint_focus (widget->style, widget->window,
area, widget, "button",
x, y, width - 1, height - 1);
}
}
}
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 (GTK_BIN (button)->child && gtk_widget_intersect (GTK_BIN (button)->child, &tmp_area, &child_area))
gtk_widget_draw (GTK_BIN (button)->child, &child_area);
}
}
static void
gtk_button_draw_focus (GtkWidget *widget)
{
gtk_widget_draw (widget, NULL);
}
static void
gtk_button_draw_default (GtkWidget *widget)
{
gtk_widget_draw (widget, NULL);
}
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 (GTK_BIN (button)->child && GTK_WIDGET_NO_WINDOW (GTK_BIN (button)->child) &&
gtk_widget_intersect (GTK_BIN (button)->child, &event->area, &child_event.area))
gtk_widget_event (GTK_BIN (button)->child, (GdkEvent*) &child_event);
}
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)
{
g_return_if_fail (container != NULL);
g_return_if_fail (widget != NULL);
if (GTK_CONTAINER_CLASS (parent_class)->add)
GTK_CONTAINER_CLASS (parent_class)->add (container, widget);
GTK_BUTTON (container)->child = GTK_BIN (container)->child;
}
static void
gtk_button_remove (GtkContainer *container,
GtkWidget *widget)
{
g_return_if_fail (container != NULL);
g_return_if_fail (widget != NULL);
if (GTK_CONTAINER_CLASS (parent_class)->remove)
GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
GTK_BUTTON (container)->child = GTK_BIN (container)->child;
}
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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