gtktoolbar.c

gtk是linux一款强大的夸平台的图形化开发工具

/* GTK - The GIMP Toolkit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 * GtkToolbar copyright (C) Federico Mena
 *
 * 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.
 */

/*
 * Modified by the GTK+ Team and others 1997-1999.  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 "gtkbutton.h"
#include "gtktogglebutton.h"
#include "gtkradiobutton.h"
#include "gtklabel.h"
#include "gtkvbox.h"
#include "gtktoolbar.h"


#define DEFAULT_SPACE_SIZE  5
#define DEFAULT_SPACE_STYLE GTK_TOOLBAR_SPACE_EMPTY

#define SPACE_LINE_DIVISION 10
#define SPACE_LINE_START    3
#define SPACE_LINE_END      7

enum {
  ARG_0,
  ARG_ORIENTATION,
  ARG_TOOLBAR_STYLE,
  ARG_SPACE_SIZE,
  ARG_SPACE_STYLE,
  ARG_RELIEF
};

enum {
  ORIENTATION_CHANGED,
  STYLE_CHANGED,
  LAST_SIGNAL
};

typedef struct _GtkToolbarChildSpace GtkToolbarChildSpace;
struct _GtkToolbarChildSpace
{
  GtkToolbarChild child;

  gint alloc_x, alloc_y;
};

static void gtk_toolbar_class_init               (GtkToolbarClass *class);
static void gtk_toolbar_init                     (GtkToolbar      *toolbar);
static void gtk_toolbar_set_arg                  (GtkObject       *object,
						  GtkArg          *arg,
						  guint            arg_id);
static void gtk_toolbar_get_arg                  (GtkObject       *object,
						  GtkArg          *arg,
						  guint            arg_id);
static void gtk_toolbar_destroy                  (GtkObject       *object);
static void gtk_toolbar_map                      (GtkWidget       *widget);
static void gtk_toolbar_unmap                    (GtkWidget       *widget);
static void gtk_toolbar_draw                     (GtkWidget       *widget,
				                  GdkRectangle    *area);
static gint gtk_toolbar_expose                   (GtkWidget       *widget,
						  GdkEventExpose  *event);
static void gtk_toolbar_size_request             (GtkWidget       *widget,
				                  GtkRequisition  *requisition);
static void gtk_toolbar_size_allocate            (GtkWidget       *widget,
				                  GtkAllocation   *allocation);
static void gtk_toolbar_add                      (GtkContainer    *container,
				                  GtkWidget       *widget);
static void gtk_toolbar_remove                   (GtkContainer    *container,
						  GtkWidget       *widget);
static void gtk_toolbar_forall                   (GtkContainer    *container,
						  gboolean	   include_internals,
				                  GtkCallback      callback,
				                  gpointer         callback_data);
static void gtk_real_toolbar_orientation_changed (GtkToolbar      *toolbar,
						  GtkOrientation   orientation);
static void gtk_real_toolbar_style_changed       (GtkToolbar      *toolbar,
						  GtkToolbarStyle  style);


static GtkContainerClass *parent_class;

static guint toolbar_signals[LAST_SIGNAL] = { 0 };


guint
gtk_toolbar_get_type (void)
{
  static guint toolbar_type = 0;

  if (!toolbar_type)
    {
      static const GtkTypeInfo toolbar_info =
      {
	"GtkToolbar",
	sizeof (GtkToolbar),
	sizeof (GtkToolbarClass),
	(GtkClassInitFunc) gtk_toolbar_class_init,
	(GtkObjectInitFunc) gtk_toolbar_init,
	/* reserved_1 */ NULL,
	/* reserved_2 */ NULL,
        (GtkClassInitFunc) NULL,
      };

      toolbar_type = gtk_type_unique (gtk_container_get_type (), &toolbar_info);
    }

  return toolbar_type;
}

static void
gtk_toolbar_class_init (GtkToolbarClass *class)
{
  GtkObjectClass *object_class;
  GtkWidgetClass *widget_class;
  GtkContainerClass *container_class;

  object_class = (GtkObjectClass *) class;
  widget_class = (GtkWidgetClass *) class;
  container_class = (GtkContainerClass *) class;

  parent_class = gtk_type_class (gtk_container_get_type ());
  
  toolbar_signals[ORIENTATION_CHANGED] =
    gtk_signal_new ("orientation_changed",
		    GTK_RUN_FIRST,
		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkToolbarClass, orientation_changed),
		    gtk_marshal_NONE__INT,
		    GTK_TYPE_NONE, 1,
		    GTK_TYPE_INT);
  toolbar_signals[STYLE_CHANGED] =
    gtk_signal_new ("style_changed",
		    GTK_RUN_FIRST,
		    object_class->type,
		    GTK_SIGNAL_OFFSET (GtkToolbarClass, style_changed),
		    gtk_marshal_NONE__INT,
		    GTK_TYPE_NONE, 1,
		    GTK_TYPE_INT);

  gtk_object_class_add_signals (object_class, toolbar_signals, LAST_SIGNAL);

  object_class->destroy = gtk_toolbar_destroy;
  object_class->set_arg = gtk_toolbar_set_arg;
  object_class->get_arg = gtk_toolbar_get_arg;

  widget_class->map = gtk_toolbar_map;
  widget_class->unmap = gtk_toolbar_unmap;
  widget_class->draw = gtk_toolbar_draw;
  widget_class->expose_event = gtk_toolbar_expose;
  widget_class->size_request = gtk_toolbar_size_request;
  widget_class->size_allocate = gtk_toolbar_size_allocate;

  container_class->add = gtk_toolbar_add;
  container_class->remove = gtk_toolbar_remove;
  container_class->forall = gtk_toolbar_forall;
  container_class->focus = NULL;
  
  class->orientation_changed = gtk_real_toolbar_orientation_changed;
  class->style_changed = gtk_real_toolbar_style_changed;
  
  gtk_object_add_arg_type ("GtkToolbar::orientation", GTK_TYPE_ORIENTATION,
			   GTK_ARG_READWRITE, ARG_ORIENTATION);
  gtk_object_add_arg_type ("GtkToolbar::toolbar_style", GTK_TYPE_TOOLBAR_STYLE,
			   GTK_ARG_READWRITE, ARG_TOOLBAR_STYLE);
  gtk_object_add_arg_type ("GtkToolbar::space_size", GTK_TYPE_UINT,
			   GTK_ARG_READWRITE, ARG_SPACE_SIZE);
  gtk_object_add_arg_type ("GtkToolbar::space_style", GTK_TYPE_TOOLBAR_SPACE_STYLE,
			   GTK_ARG_READWRITE, ARG_SPACE_STYLE);
  gtk_object_add_arg_type ("GtkToolbar::relief", GTK_TYPE_RELIEF_STYLE,
			   GTK_ARG_READWRITE, ARG_RELIEF);
}

static void
gtk_toolbar_init (GtkToolbar *toolbar)
{
  GTK_WIDGET_SET_FLAGS (toolbar, GTK_NO_WINDOW);
  GTK_WIDGET_UNSET_FLAGS (toolbar, GTK_CAN_FOCUS);

  toolbar->num_children = 0;
  toolbar->children     = NULL;
  toolbar->orientation  = GTK_ORIENTATION_HORIZONTAL;
  toolbar->style        = GTK_TOOLBAR_ICONS;
  toolbar->relief       = GTK_RELIEF_NORMAL;
  toolbar->space_size   = DEFAULT_SPACE_SIZE;
  toolbar->space_style  = DEFAULT_SPACE_STYLE;
  toolbar->tooltips     = gtk_tooltips_new ();
  toolbar->button_maxw  = 0;
  toolbar->button_maxh  = 0;
}

static void
gtk_toolbar_set_arg (GtkObject *object,
		     GtkArg    *arg,
		     guint      arg_id)
{
  GtkToolbar *toolbar = GTK_TOOLBAR (object);
  
  switch (arg_id)
    {
    case ARG_ORIENTATION:
      gtk_toolbar_set_orientation (toolbar, GTK_VALUE_ENUM (*arg));
      break;
    case ARG_TOOLBAR_STYLE:
      gtk_toolbar_set_style (toolbar, GTK_VALUE_ENUM (*arg));
      break;
    case ARG_SPACE_SIZE:
      gtk_toolbar_set_space_size (toolbar, GTK_VALUE_UINT (*arg));
      break;
    case ARG_SPACE_STYLE:
      gtk_toolbar_set_space_style (toolbar, GTK_VALUE_ENUM (*arg));
      break;	  
    case ARG_RELIEF:
      gtk_toolbar_set_button_relief (toolbar, GTK_VALUE_ENUM (*arg));
      break;
    }
}

static void
gtk_toolbar_get_arg (GtkObject *object,
		     GtkArg    *arg,
		     guint      arg_id)
{
  GtkToolbar *toolbar = GTK_TOOLBAR (object);

  switch (arg_id)
    {
    case ARG_ORIENTATION:
      GTK_VALUE_ENUM (*arg) = toolbar->orientation;
      break;
    case ARG_TOOLBAR_STYLE:
      GTK_VALUE_ENUM (*arg) = toolbar->style;
      break;
    case ARG_SPACE_SIZE:
      GTK_VALUE_UINT (*arg) = toolbar->space_size;
      break;		
    case ARG_SPACE_STYLE:
      GTK_VALUE_ENUM (*arg) = toolbar->space_style;
      break;
    case ARG_RELIEF:
      GTK_VALUE_ENUM (*arg) = toolbar->relief;
      break;	
    default:
      arg->type = GTK_TYPE_INVALID;
      break;
    }
}

GtkWidget*
gtk_toolbar_new (GtkOrientation  orientation,
		 GtkToolbarStyle style)
{
  GtkToolbar *toolbar;

  toolbar = gtk_type_new (gtk_toolbar_get_type ());

  toolbar->orientation = orientation;
  toolbar->style = style;

  return GTK_WIDGET (toolbar);
}

static void
gtk_toolbar_destroy (GtkObject *object)
{
  GtkToolbar *toolbar;
  GList *children;

  g_return_if_fail (object != NULL);
  g_return_if_fail (GTK_IS_TOOLBAR (object));

  toolbar = GTK_TOOLBAR (object);

  gtk_object_unref (GTK_OBJECT (toolbar->tooltips));
  toolbar->tooltips = NULL;

  for (children = toolbar->children; children; children = children->next)
    {
      GtkToolbarChild *child;

      child = children->data;

      if (child->type != GTK_TOOLBAR_CHILD_SPACE)
	{
	  gtk_widget_ref (child->widget);
	  gtk_widget_unparent (child->widget);
	  gtk_widget_destroy (child->widget);
	  gtk_widget_unref (child->widget);
	}

      g_free (child);
    }

  g_list_free (toolbar->children);
  toolbar->children = NULL;
  
  if (GTK_OBJECT_CLASS (parent_class)->destroy)
    (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

static void
gtk_toolbar_map (GtkWidget *widget)
{
  GtkToolbar *toolbar;
  GList *children;
  GtkToolbarChild *child;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_TOOLBAR (widget));

  toolbar = GTK_TOOLBAR (widget);
  GTK_WIDGET_SET_FLAGS (toolbar, GTK_MAPPED);

  for (children = toolbar->children; children; children = children->next)
    {
      child = children->data;

      if ((child->type != GTK_TOOLBAR_CHILD_SPACE)
	  && GTK_WIDGET_VISIBLE (child->widget) && !GTK_WIDGET_MAPPED (child->widget))
	gtk_widget_map (child->widget);
    }
}

static void
gtk_toolbar_unmap (GtkWidget *widget)
{
  GtkToolbar *toolbar;
  GList *children;
  GtkToolbarChild *child;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_TOOLBAR (widget));

  toolbar = GTK_TOOLBAR (widget);
  GTK_WIDGET_UNSET_FLAGS (toolbar, GTK_MAPPED);

  for (children = toolbar->children; children; children = children->next)
    {
      child = children->data;

      if ((child->type != GTK_TOOLBAR_CHILD_SPACE)
	  && GTK_WIDGET_VISIBLE (child->widget) && GTK_WIDGET_MAPPED (child->widget))
	gtk_widget_unmap (child->widget);
    }
}

static void
gtk_toolbar_paint_space_line (GtkWidget       *widget,
			      GdkRectangle    *area,
			      GtkToolbarChild *child)
{
  GtkToolbar *toolbar;
  GtkToolbarChildSpace *child_space;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_TOOLBAR (widget));
  g_return_if_fail (child != NULL);
  g_return_if_fail (child->type == GTK_TOOLBAR_CHILD_SPACE);

  toolbar = GTK_TOOLBAR (widget);

  child_space = (GtkToolbarChildSpace *) child;

  if (toolbar->orientation == GTK_ORIENTATION_HORIZONTAL)
    gtk_paint_vline (widget->style, widget->window,
		     GTK_WIDGET_STATE (widget), area, widget,
		     "toolbar",
		     child_space->alloc_y + toolbar->button_maxh *
		     SPACE_LINE_START / SPACE_LINE_DIVISION,
		     child_space->alloc_y + toolbar->button_maxh *
		     SPACE_LINE_END / SPACE_LINE_DIVISION,
		     child_space->alloc_x +
		     (toolbar->space_size -
		      widget->style->klass->xthickness) / 2);
  else
    gtk_paint_hline (widget->style, widget->window,
		     GTK_WIDGET_STATE (widget), area, widget,
		     "toolbar",
		     child_space->alloc_x + toolbar->button_maxw *
		     SPACE_LINE_START / SPACE_LINE_DIVISION,