+/* GDK - The GIMP Drawing Kit
+ * 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 Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Modified by the GTK+ Team and others 1997-2000. 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 __GDK_VISUAL_H__
#define __GDK_VISUAL_H__
+#if !defined (__GDK_H_INSIDE__) && !defined (GDK_COMPILATION)
+#error "Only <gdk/gdk.h> can be included directly."
+#endif
+
#include <gdk/gdktypes.h>
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
-/* Types of visuals.
- * StaticGray:
- * Grayscale:
- * StaticColor:
- * PseudoColor:
- * TrueColor:
- * DirectColor:
+G_BEGIN_DECLS
+
+#define GDK_TYPE_VISUAL (gdk_visual_get_type ())
+#define GDK_VISUAL(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_VISUAL, GdkVisual))
+#define GDK_IS_VISUAL(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_VISUAL))
+
+/**
+ * GdkVisualType:
+ * @GDK_VISUAL_STATIC_GRAY: Each pixel value indexes a grayscale value
+ * directly.
+ * @GDK_VISUAL_GRAYSCALE: Each pixel is an index into a color map that
+ * maps pixel values into grayscale values. The color map can be
+ * changed by an application.
+ * @GDK_VISUAL_STATIC_COLOR: Each pixel value is an index into a predefined,
+ * unmodifiable color map that maps pixel values into RGB values.
+ * @GDK_VISUAL_PSEUDO_COLOR: Each pixel is an index into a color map that
+ * maps pixel values into rgb values. The color map can be changed by
+ * an application.
+ * @GDK_VISUAL_TRUE_COLOR: Each pixel value directly contains red, green,
+ * and blue components. Use gdk_visual_get_red_pixel_details(), etc,
+ * to obtain information about how the components are assembled into
+ * a pixel value.
+ * @GDK_VISUAL_DIRECT_COLOR: Each pixel value contains red, green, and blue
+ * components as for %GDK_VISUAL_TRUE_COLOR, but the components are
+ * mapped via a color table into the final output table instead of
+ * being converted directly.
+ *
+ * A set of values that describe the manner in which the pixel values
+ * for a visual are converted into RGB values for display.
*/
typedef enum
{
GDK_VISUAL_DIRECT_COLOR
} GdkVisualType;
-/* The visual type.
- * "type" is the type of visual this is (PseudoColor, TrueColor, etc).
- * "depth" is the bit depth of this visual.
- * "colormap_size" is the size of a colormap for this visual.
- * "bits_per_rgb" is the number of significant bits per red, green and blue.
- * The red, green and blue masks, shifts and precisions refer
- * to value needed to calculate pixel values in TrueColor and DirectColor
- * visuals. The "mask" is the significant bits within the pixel. The
- * "shift" is the number of bits left we must shift a primary for it
- * to be in position (according to the "mask"). "prec" refers to how
- * much precision the pixel value contains for a particular primary.
+/**
+ * GdkVisual:
+ *
+ * The #GdkVisual structure contains information about
+ * a particular visual.
*/
-struct _GdkVisual
-{
- GdkVisualType type;
- gint depth;
- GdkByteOrder byte_order;
- gint colormap_size;
- gint bits_per_rgb;
-
- guint32 red_mask;
- gint red_shift;
- gint red_prec;
-
- guint32 green_mask;
- gint green_shift;
- gint green_prec;
-
- guint32 blue_mask;
- gint blue_shift;
- gint blue_prec;
-};
-
-gint gdk_visual_get_best_depth (void);
-GdkVisualType gdk_visual_get_best_type (void);
-GdkVisual* gdk_visual_get_system (void);
-GdkVisual* gdk_visual_get_best (void);
-GdkVisual* gdk_visual_get_best_with_depth (gint depth);
-GdkVisual* gdk_visual_get_best_with_type (GdkVisualType visual_type);
-GdkVisual* gdk_visual_get_best_with_both (gint depth,
- GdkVisualType visual_type);
-/* Actually, these are no-ops... */
-GdkVisual* gdk_visual_ref (GdkVisual *visual);
-void gdk_visual_unref (GdkVisual *visual);
+GType gdk_visual_get_type (void) G_GNUC_CONST;
+
+#ifndef GDK_MULTIHEAD_SAFE
+gint gdk_visual_get_best_depth (void);
+GdkVisualType gdk_visual_get_best_type (void);
+GdkVisual* gdk_visual_get_system (void);
+GdkVisual* gdk_visual_get_best (void);
+GdkVisual* gdk_visual_get_best_with_depth (gint depth);
+GdkVisual* gdk_visual_get_best_with_type (GdkVisualType visual_type);
+GdkVisual* gdk_visual_get_best_with_both (gint depth,
+ GdkVisualType visual_type);
-void gdk_query_depths (gint **depths,
- gint *count);
+void gdk_query_depths (gint **depths,
+ gint *count);
void gdk_query_visual_types (GdkVisualType **visual_types,
- gint *count);
+ gint *count);
GList* gdk_list_visuals (void);
+#endif
+
+GdkScreen *gdk_visual_get_screen (GdkVisual *visual);
+
+GdkVisualType gdk_visual_get_visual_type (GdkVisual *visual);
+gint gdk_visual_get_depth (GdkVisual *visual);
+GdkByteOrder gdk_visual_get_byte_order (GdkVisual *visual);
+gint gdk_visual_get_colormap_size (GdkVisual *visual);
+gint gdk_visual_get_bits_per_rgb (GdkVisual *visual);
+void gdk_visual_get_red_pixel_details (GdkVisual *visual,
+ guint32 *mask,
+ gint *shift,
+ gint *precision);
+void gdk_visual_get_green_pixel_details (GdkVisual *visual,
+ guint32 *mask,
+ gint *shift,
+ gint *precision);
+void gdk_visual_get_blue_pixel_details (GdkVisual *visual,
+ guint32 *mask,
+ gint *shift,
+ gint *precision);
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
+G_END_DECLS
#endif /* __GDK_VISUAL_H__ */
projects / ~andy / gtk / blobdiff