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/* GIMP Plugin Preview Widget
* Copyright (C) 1998-1999 Shawn T. Amundson
* Modifications (C) 1999-2003 Ernst Lippe
*
* 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.
*
* Version $Id: gimppreview.h,v 1.1.1.1 2003/01/30 21:30:18 ernstl Exp $
*/
#ifndef GIMP_PREVIEW_H
#define GIMP_PREVIEW_H
#include <gtk/gtk.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
G_BEGIN_DECLS
#define PREVIEW_FIXED_SIZE 0
#define PREVIEW_DEFAULT_SIZE -1
#define GIMP_TYPE_PREVIEW (gimp_preview_get_type ())
#define GIMP_PREVIEW(obj) (GTK_CHECK_CAST ((obj), GIMP_TYPE_PREVIEW, RefocusPreview))
#define GIMP_PREVIEW_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GIMP_TYPE_PREVIEW, RefocusPreviewClass))
#define GIMP_IS_PREVIEW(obj) (GTK_CHECK_TYPE ((obj), GIMP_TYPE_PREVIEW))
#define GIMP_IS_PREVIEW_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_PREVIEW))
typedef struct _RefocusPreview RefocusPreview;
typedef struct _RefocusPreviewClass RefocusPreviewClass;
typedef struct _RefocusPreviewEvent RefocusPreviewEvent;
struct _RefocusPreviewClass
{
GtkContainerClass parent_class;
void (*update_preview) (RefocusPreview * preview, RefocusPreviewEvent * event);
void (*preview_changed) (RefocusPreview * preview);
};
struct _RefocusPreview
{
GtkContainer parent;
/* TODO: most of these should be hidden and changed into properties */
GimpDrawable *drawable; /* The drawable that is shown */
gint drawable_has_alpha; /* Does the drawable have alpha */
gdouble scale; /* Scale of Preview */
gint width; /* Width of Preview */
gint height; /* Height of Preview */
gint max_width;
gint max_height;
/* Left/Top of image area viewed in the preview in preview coords */
gint preview_x;
gint preview_y;
guchar *buffer; /* Contains scaled image data as RGBA */
gpointer private_data;
};
/**
* RefocusPreviewEvent:
* @event_id: Id of this event. This is needed for gimp_preview_draw_row,
* gimp_preview_draw_unscaled_row and gimp_preview_progress_set_fraction.
* @scale: Current scale of the preview.
*
**/
struct _RefocusPreviewEvent
{
gint event_id; /* Id of this event */
gdouble scale; /* Scale of preview */
/* Left/Top of requested unscaled data in image coordinates */
gint image_x;
gint image_y;
/* Width/Height of requested unscaled data in image coordinates */
gint image_width;
gint image_height;
/* Left/Top of preview in preview coordinates */
gint preview_x;
gint preview_y;
/* Width/Height of the preview */
gint preview_width;
gint preview_height;
/* Contains scaled image data as RGBA (4 bytes per pixel).
The size of the array is 4 * preview_height * preview_width bytes */
guchar *scaled_data;
};
GtkType gimp_preview_get_type (void);
GtkWidget *gimp_preview_new (GimpDrawable * drawable);
GtkWidget *gimp_preview_new_with_args (GimpDrawable * drawable,
gint preview_size,
gdouble scale_amount,
gint allow_scale);
void gimp_preview_update (RefocusPreview * preview);
gboolean gimp_preview_draw_row (RefocusPreview * preview, const gint event_id,
GimpImageType type, const gint row,
const guchar * const data);
gboolean gimp_preview_draw_unscaled_row (RefocusPreview * preview,
const gint event_id,
GimpImageType type, const gint row,
const guchar * const data);
void gimp_preview_force_redraw (RefocusPreview * preview);
gboolean gimp_preview_progress_set_fraction (RefocusPreview * preview,
const gint event_id,
double fraction);
G_END_DECLS
#endif /* __GIMP_PREVIEW_H__ */
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