| 1 | /* GTK - The GIMP Toolkit |
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| 2 | * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
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| 3 | * |
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| 4 | * This library is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Library General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * This library is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Library General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Library General Public |
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| 15 | * License along with this library; if not, write to the |
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| 16 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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| 17 | * Boston, MA 02111-1307, USA. |
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| 18 | */ |
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| 19 | |
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| 20 | /* |
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| 21 | * Modified by the GTK+ Team and others 1997-1999. See the AUTHORS |
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| 22 | * file for a list of people on the GTK+ Team. See the ChangeLog |
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| 23 | * files for a list of changes. These files are distributed with |
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| 24 | * GTK+ at ftp://ftp.gtk.org/pub/gtk/. |
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| 25 | */ |
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| 26 | |
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| 27 | #ifndef __GTK_PREVIEW_H__ |
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| 28 | #define __GTK_PREVIEW_H__ |
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| 29 | |
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| 30 | |
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| 31 | #include <gtk/gtkwidget.h> |
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| 32 | |
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| 33 | |
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| 34 | #ifdef __cplusplus |
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| 35 | extern "C" { |
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| 36 | #endif /* __cplusplus */ |
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| 37 | |
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| 38 | |
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| 39 | #define GTK_TYPE_PREVIEW (gtk_preview_get_type ()) |
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| 40 | #define GTK_PREVIEW(obj) (GTK_CHECK_CAST ((obj), GTK_TYPE_PREVIEW, GtkPreview)) |
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| 41 | #define GTK_PREVIEW_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_PREVIEW, GtkPreviewClass)) |
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| 42 | #define GTK_IS_PREVIEW(obj) (GTK_CHECK_TYPE ((obj), GTK_TYPE_PREVIEW)) |
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| 43 | #define GTK_IS_PREVIEW_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_PREVIEW)) |
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| 44 | |
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| 45 | |
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| 46 | typedef struct _GtkPreview GtkPreview; |
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| 47 | typedef struct _GtkPreviewInfo GtkPreviewInfo; |
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| 48 | typedef union _GtkDitherInfo GtkDitherInfo; |
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| 49 | typedef struct _GtkPreviewClass GtkPreviewClass; |
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| 50 | |
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| 51 | struct _GtkPreview |
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| 52 | { |
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| 53 | GtkWidget widget; |
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| 54 | |
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| 55 | guchar *buffer; |
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| 56 | guint16 buffer_width; |
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| 57 | guint16 buffer_height; |
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| 58 | |
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| 59 | guint16 bpp; |
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| 60 | guint16 rowstride; |
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| 61 | |
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| 62 | GdkRgbDither dither; |
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| 63 | |
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| 64 | guint type : 1; |
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| 65 | guint expand : 1; |
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| 66 | }; |
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| 67 | |
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| 68 | struct _GtkPreviewInfo |
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| 69 | { |
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| 70 | GdkVisual *visual; |
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| 71 | GdkColormap *cmap; |
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| 72 | |
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| 73 | guchar *lookup; |
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| 74 | |
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| 75 | gdouble gamma; |
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| 76 | }; |
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| 77 | |
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| 78 | union _GtkDitherInfo |
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| 79 | { |
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| 80 | gushort s[2]; |
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| 81 | guchar c[4]; |
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| 82 | }; |
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| 83 | |
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| 84 | struct _GtkPreviewClass |
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| 85 | { |
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| 86 | GtkWidgetClass parent_class; |
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| 87 | |
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| 88 | GtkPreviewInfo info; |
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| 89 | |
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| 90 | }; |
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| 91 | |
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| 92 | |
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| 93 | GtkType gtk_preview_get_type (void); |
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| 94 | void gtk_preview_uninit (void); |
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| 95 | GtkWidget* gtk_preview_new (GtkPreviewType type); |
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| 96 | void gtk_preview_size (GtkPreview *preview, |
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| 97 | gint width, |
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| 98 | gint height); |
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| 99 | void gtk_preview_put (GtkPreview *preview, |
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| 100 | GdkWindow *window, |
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| 101 | GdkGC *gc, |
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| 102 | gint srcx, |
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| 103 | gint srcy, |
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| 104 | gint destx, |
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| 105 | gint desty, |
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| 106 | gint width, |
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| 107 | gint height); |
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| 108 | void gtk_preview_draw_row (GtkPreview *preview, |
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| 109 | guchar *data, |
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| 110 | gint x, |
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| 111 | gint y, |
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| 112 | gint w); |
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| 113 | void gtk_preview_set_expand (GtkPreview *preview, |
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| 114 | gboolean expand); |
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| 115 | |
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| 116 | void gtk_preview_set_gamma (double gamma); |
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| 117 | void gtk_preview_set_color_cube (guint nred_shades, |
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| 118 | guint ngreen_shades, |
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| 119 | guint nblue_shades, |
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| 120 | guint ngray_shades); |
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| 121 | void gtk_preview_set_install_cmap (gint install_cmap); |
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| 122 | void gtk_preview_set_reserved (gint nreserved); |
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| 123 | void gtk_preview_set_dither (GtkPreview *preview, |
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| 124 | GdkRgbDither dither); |
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| 125 | GdkVisual* gtk_preview_get_visual (void); |
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| 126 | GdkColormap* gtk_preview_get_cmap (void); |
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| 127 | GtkPreviewInfo* gtk_preview_get_info (void); |
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| 128 | |
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| 129 | /* This function reinitializes the preview colormap and visual from |
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| 130 | * the current gamma/color_cube/install_cmap settings. It must only |
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| 131 | * be called if there are no previews or users's of the preview |
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| 132 | * colormap in existence. |
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| 133 | */ |
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| 134 | void gtk_preview_reset (void); |
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| 135 | |
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| 136 | |
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| 137 | #ifdef __cplusplus |
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| 138 | } |
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| 139 | #endif /* __cplusplus */ |
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| 140 | |
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| 141 | |
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| 142 | #endif /* __GTK_PREVIEW_H__ */ |
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