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/* Copyright (C) 2000 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: gstparam.h,v 1.15 2005/08/30 16:49:34 igor Exp $ */
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/* Transparency parameter definitions */
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#ifndef gstparam_INCLUDED
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# define gstparam_INCLUDED
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#include "gsccolor.h"
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#include "gsrefct.h"
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/* Define the names of the known blend modes. */
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typedef enum {
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BLEND_MODE_Compatible,
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BLEND_MODE_Normal,
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BLEND_MODE_Multiply,
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BLEND_MODE_Screen,
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BLEND_MODE_Difference,
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BLEND_MODE_Darken,
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BLEND_MODE_Lighten,
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BLEND_MODE_ColorDodge,
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BLEND_MODE_ColorBurn,
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BLEND_MODE_Exclusion,
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BLEND_MODE_HardLight,
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BLEND_MODE_Overlay,
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BLEND_MODE_SoftLight,
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BLEND_MODE_Luminosity,
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BLEND_MODE_Hue,
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BLEND_MODE_Saturation,
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BLEND_MODE_Color
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#define MAX_BLEND_MODE BLEND_MODE_Color
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} gs_blend_mode_t;
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#define GS_BLEND_MODE_NAMES\
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"Compatible", "Normal", "Multiply", "Screen", "Difference",\
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"Darken", "Lighten", "ColorDodge", "ColorBurn", "Exclusion",\
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"HardLight", "Overlay", "SoftLight", "Luminosity", "Hue",\
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"Saturation", "Color"
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/* Define the common part for a transparency stack state. */
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typedef enum {
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TRANSPARENCY_STATE_Group = 1, /* must not be 0 */
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TRANSPARENCY_STATE_Mask
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} gs_transparency_state_type_t;
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#define GS_TRANSPARENCY_STATE_COMMON\
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gs_transparency_state_t *saved;\
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gs_transparency_state_type_t type
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typedef struct gs_transparency_state_s gs_transparency_state_t;
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struct gs_transparency_state_s {
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GS_TRANSPARENCY_STATE_COMMON;
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};
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/* Define the common part for a cached transparency mask. */
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#define GS_TRANSPARENCY_MASK_COMMON\
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rc_header rc
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typedef struct gs_transparency_mask_s {
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GS_TRANSPARENCY_MASK_COMMON;
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} gs_transparency_mask_t;
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/* Define the parameter structure for a transparency group. */
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#ifndef gs_color_space_DEFINED
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# define gs_color_space_DEFINED
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typedef struct gs_color_space_s gs_color_space;
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#endif
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#ifndef gs_function_DEFINED
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typedef struct gs_function_s gs_function_t;
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# define gs_function_DEFINED
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#endif
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/* (Update gs_trans_group_params_init if these change.) */
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typedef struct gs_transparency_group_params_s {
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const gs_color_space *ColorSpace;
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bool Isolated;
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bool Knockout;
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} gs_transparency_group_params_t;
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/* Define the parameter structure for a transparency mask. */
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typedef enum {
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TRANSPARENCY_MASK_Alpha,
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TRANSPARENCY_MASK_Luminosity
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} gs_transparency_mask_subtype_t;
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#define GS_TRANSPARENCY_MASK_SUBTYPE_NAMES\
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"Alpha", "Luminosity"
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/* See the gx_transparency_mask_params_t type below */
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/* (Update gs_trans_mask_params_init if these change.) */
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typedef struct gs_transparency_mask_params_s {
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gs_transparency_mask_subtype_t subtype;
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int Background_components;
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float Background[GS_CLIENT_COLOR_MAX_COMPONENTS];
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float GrayBackground;
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int (*TransferFunction)(floatp in, float *out, void *proc_data);
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gs_function_t *TransferFunction_data;
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} gs_transparency_mask_params_t;
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#define MASK_TRANSFER_FUNCTION_SIZE 256
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/* The post clist version of transparency mask parameters */
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typedef struct gx_transparency_mask_params_s {
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gs_transparency_mask_subtype_t subtype;
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int Background_components;
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float Background[GS_CLIENT_COLOR_MAX_COMPONENTS];
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float GrayBackground;
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bool function_is_identity;
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byte transfer_fn[MASK_TRANSFER_FUNCTION_SIZE];
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} gx_transparency_mask_params_t;
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/* Select the opacity or shape parameters. */
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typedef enum {
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TRANSPARENCY_CHANNEL_Opacity = 0,
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TRANSPARENCY_CHANNEL_Shape = 1
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} gs_transparency_channel_selector_t;
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#endif /* gstparam_INCLUDED */
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