summaryrefslogtreecommitdiff
path: root/gtk/gtkpreview.h
blob: bc7c8fe26f42e713632cba5dd29ad2030edad9be (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
/* 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.
 */

/*
 * 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/. 
 */

#ifndef __GTK_PREVIEW_H__
#define __GTK_PREVIEW_H__


#include <gtk/gtkwidget.h>


#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */


#define GTK_TYPE_PREVIEW            (gtk_preview_get_type ())
#define GTK_PREVIEW(obj)            (GTK_CHECK_CAST ((obj), GTK_TYPE_PREVIEW, GtkPreview))
#define GTK_PREVIEW_CLASS(klass)    (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_PREVIEW, GtkPreviewClass))
#define GTK_IS_PREVIEW(obj)         (GTK_CHECK_TYPE ((obj), GTK_TYPE_PREVIEW))
#define GTK_IS_PREVIEW_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_PREVIEW))
#define GTK_PREVIEW_GET_CLASS(obj)  (GTK_CHECK_GET_CLASS ((obj), GTK_TYPE_PREVIEW, GtkPreviewClass))


typedef struct _GtkPreview       GtkPreview;
typedef struct _GtkPreviewInfo   GtkPreviewInfo;
typedef union  _GtkDitherInfo    GtkDitherInfo;
typedef struct _GtkPreviewClass  GtkPreviewClass;

struct _GtkPreview
{
  GtkWidget widget;

  guchar *buffer;
  guint16 buffer_width;
  guint16 buffer_height;

  guint16 bpp;
  guint16 rowstride;

  GdkRgbDither dither;

  guint type : 1;
  guint expand : 1;
};

struct _GtkPreviewInfo
{
  GdkVisual *visual;
  GdkColormap *cmap;

  guchar *lookup;

  gdouble gamma;
};

union _GtkDitherInfo
{
  gushort s[2];
  guchar c[4];
};

struct _GtkPreviewClass
{
  GtkWidgetClass parent_class;

  GtkPreviewInfo info;

};


GtkType         gtk_preview_get_type           (void);
void            gtk_preview_uninit             (void);
GtkWidget*      gtk_preview_new                (GtkPreviewType   type);
void            gtk_preview_size               (GtkPreview      *preview,
						gint             width,
						gint             height);
void            gtk_preview_put                (GtkPreview      *preview,
						GdkWindow       *window,
						GdkGC           *gc,
						gint             srcx,
						gint             srcy,
						gint             destx,
						gint             desty,
						gint             width,
						gint             height);
void            gtk_preview_draw_row           (GtkPreview      *preview,
						guchar          *data,
						gint             x,
						gint             y,
						gint             w);
void            gtk_preview_set_expand         (GtkPreview      *preview,
						gboolean         expand);

void            gtk_preview_set_gamma          (double           gamma);
void            gtk_preview_set_color_cube     (guint            nred_shades,
						guint            ngreen_shades,
						guint            nblue_shades,
						guint            ngray_shades);
void            gtk_preview_set_install_cmap   (gint             install_cmap);
void            gtk_preview_set_reserved       (gint             nreserved);
void            gtk_preview_set_dither         (GtkPreview      *preview,
						GdkRgbDither     dither);
GdkVisual*      gtk_preview_get_visual         (void);
GdkColormap*    gtk_preview_get_cmap           (void);
GtkPreviewInfo* gtk_preview_get_info           (void);

/* This function reinitializes the preview colormap and visual from
 * the current gamma/color_cube/install_cmap settings. It must only
 * be called if there are no previews or users's of the preview
 * colormap in existence.
 */
void            gtk_preview_reset              (void);


#ifdef __cplusplus
}
#endif /* __cplusplus */


#endif /* __GTK_PREVIEW_H__ */