Pileus Git - ~andy/gtk/blob - gtk/gtkpreview.h

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #ifndef GTK_DISABLE_DEPRECATED
  28
  29 #ifndef __GTK_PREVIEW_H__
  30 #define __GTK_PREVIEW_H__
  31
  32
  33 #include <gtk/gtkwidget.h>
  34
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38 #endif /* __cplusplus */
  39
  40
  41 #define GTK_TYPE_PREVIEW            (gtk_preview_get_type ())
  42 #define GTK_PREVIEW(obj)            (GTK_CHECK_CAST ((obj), GTK_TYPE_PREVIEW, GtkPreview))
  43 #define GTK_PREVIEW_CLASS(klass)    (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_PREVIEW, GtkPreviewClass))
  44 #define GTK_IS_PREVIEW(obj)         (GTK_CHECK_TYPE ((obj), GTK_TYPE_PREVIEW))
  45 #define GTK_IS_PREVIEW_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_PREVIEW))
  46 #define GTK_PREVIEW_GET_CLASS(obj)  (GTK_CHECK_GET_CLASS ((obj), GTK_TYPE_PREVIEW, GtkPreviewClass))
  47
  48
  49 typedef struct _GtkPreview       GtkPreview;
  50 typedef struct _GtkPreviewInfo   GtkPreviewInfo;
  51 typedef union  _GtkDitherInfo    GtkDitherInfo;
  52 typedef struct _GtkPreviewClass  GtkPreviewClass;
  53
  54 struct _GtkPreview
  55 {
  56   GtkWidget widget;
  57
  58   guchar *buffer;
  59   guint16 buffer_width;
  60   guint16 buffer_height;
  61
  62   guint16 bpp;
  63   guint16 rowstride;
  64
  65   GdkRgbDither dither;
  66
  67   guint type : 1;
  68   guint expand : 1;
  69 };
  70
  71 struct _GtkPreviewInfo
  72 {
  73   guchar *lookup;
  74
  75   gdouble gamma;
  76 };
  77
  78 union _GtkDitherInfo
  79 {
  80   gushort s[2];
  81   guchar c[4];
  82 };
  83
  84 struct _GtkPreviewClass
  85 {
  86   GtkWidgetClass parent_class;
  87
  88   GtkPreviewInfo info;
  89
  90 };
  91
  92
  93 GtkType         gtk_preview_get_type           (void) G_GNUC_CONST;
  94 void            gtk_preview_uninit             (void);
  95 GtkWidget*      gtk_preview_new                (GtkPreviewType   type);
  96 void            gtk_preview_size               (GtkPreview      *preview,
  97                                                 gint             width,
  98                                                 gint             height);
  99 void            gtk_preview_put                (GtkPreview      *preview,
 100                                                 GdkWindow       *window,
 101                                                 GdkGC           *gc,
 102                                                 gint             srcx,
 103                                                 gint             srcy,
 104                                                 gint             destx,
 105                                                 gint             desty,
 106                                                 gint             width,
 107                                                 gint             height);
 108 void            gtk_preview_draw_row           (GtkPreview      *preview,
 109                                                 guchar          *data,
 110                                                 gint             x,
 111                                                 gint             y,
 112                                                 gint             w);
 113 void            gtk_preview_set_expand         (GtkPreview      *preview,
 114                                                 gboolean         expand);
 115
 116 void            gtk_preview_set_gamma          (double           gamma_);
 117 void            gtk_preview_set_color_cube     (guint            nred_shades,
 118                                                 guint            ngreen_shades,
 119                                                 guint            nblue_shades,
 120                                                 guint            ngray_shades);
 121 void            gtk_preview_set_install_cmap   (gint             install_cmap);
 122 void            gtk_preview_set_reserved       (gint             nreserved);
 123 void            gtk_preview_set_dither         (GtkPreview      *preview,
 124                                                 GdkRgbDither     dither);
 125 #ifndef GTK_DISABLE_DEPRECATED
 126 GdkVisual*      gtk_preview_get_visual         (void);
 127 GdkColormap*    gtk_preview_get_cmap           (void);
 128 #endif
 129 GtkPreviewInfo* gtk_preview_get_info           (void);
 130
 131 /* This function reinitializes the preview colormap and visual from
 132  * the current gamma/color_cube/install_cmap settings. It must only
 133  * be called if there are no previews or users's of the preview
 134  * colormap in existence.
 135  */
 136 void            gtk_preview_reset              (void);
 137
 138
 139 #ifdef __cplusplus
 140 }
 141 #endif /* __cplusplus */
 142
 143
 144 #endif /* __GTK_PREVIEW_H__ */
 145
 146 #endif /* GTK_DISABLE_DEPRECATED */