809 lines
26 KiB
C
809 lines
26 KiB
C
/**
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* libpsd - Photoshop file formats (*.psd) decode library
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* Copyright (C) 2004-2007 Graphest Software.
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*
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* libpsd is the legal property of its developers, whose names are too numerous
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* to list here. Please refer to the COPYRIGHT file distributed with this
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* source distribution.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* $Id: effects.c, created by Patrick in 2006.05.23, libpsd@graphest.com Exp $
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*/
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#include "libpsd.h"
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#include "psd_config.h"
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#include "psd_system.h"
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#include "psd_stream.h"
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#include "psd_color.h"
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#include "psd_rect.h"
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#include "psd_bitmap.h"
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#include "psd_math.h"
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#include "psd_descriptor.h"
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extern psd_status psd_get_layer_drop_shadow(psd_context * context, psd_layer_effects_drop_shadow * drop_shadow);
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extern psd_status psd_get_layer_drop_shadow2(psd_context * context, psd_layer_effects_drop_shadow * drop_shadow);
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extern psd_status psd_get_layer_inner_shadow(psd_context * context, psd_layer_effects_inner_shadow * inner_shadow);
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extern psd_status psd_get_layer_inner_shadow2(psd_context * context, psd_layer_effects_inner_shadow * inner_shadow);
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extern psd_status psd_get_layer_outer_glow(psd_context * context, psd_layer_effects_outer_glow * outer_glow);
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extern psd_status psd_get_layer_outer_glow2(psd_context * context, psd_layer_effects_outer_glow * outer_glow);
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extern psd_status psd_get_layer_inner_glow(psd_context * context, psd_layer_effects_inner_glow * inner_glow);
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extern psd_status psd_get_layer_inner_glow2(psd_context * context, psd_layer_effects_inner_glow * inner_glow);
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extern psd_status psd_get_layer_bevel_emboss(psd_context * context, psd_layer_effects_bevel_emboss * bevel_emboss);
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extern psd_status psd_get_layer_bevel_emboss2(psd_context * context, psd_layer_effects_bevel_emboss * bevel_emboss);
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extern psd_status psd_get_layer_color_overlay(psd_context * context, psd_layer_effects_color_overlay * color_overlay);
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extern psd_status psd_get_layer_color_overlay2(psd_context * context, psd_layer_effects_color_overlay * color_overlay);
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extern psd_status psd_get_layer_gradient_overlay2(psd_context * context, psd_layer_effects_gradient_overlay * gradient_overlay);
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extern psd_status psd_get_layer_pattern_overlay2(psd_context * context, psd_layer_effects_pattern_overlay * pattern_overlay);
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extern psd_status psd_get_layer_stroke2(psd_context * context, psd_layer_effects_stroke * stroke);
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extern psd_status psd_get_layer_satin2(psd_context * context, psd_layer_effects_satin * satin);
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extern psd_status psd_layer_effects_blend_drop_shadow(psd_context * context, psd_layer_record * layer, psd_layer_effects * data);
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extern psd_status psd_layer_effects_blend_inner_shadow(psd_context * context, psd_layer_record * layer, psd_layer_effects * data);
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extern psd_status psd_layer_effects_blend_outer_glow(psd_context * context, psd_layer_record * layer, psd_layer_effects * data);
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extern psd_status psd_layer_effects_blend_inner_glow(psd_context * context, psd_layer_record * layer, psd_layer_effects * data);
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extern psd_status psd_layer_effects_blend_satin(psd_context * context, psd_layer_record * layer, psd_layer_effects * data);
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extern psd_status psd_layer_effects_blend_color_overlay(psd_context * context, psd_layer_record * layer, psd_layer_effects * data);
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extern psd_status psd_layer_effects_blend_gradient_overlay(psd_context * context, psd_layer_record * layer, psd_layer_effects * data);
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extern psd_status psd_layer_effects_blend_pattern_overlay(psd_context * context, psd_layer_record * layer, psd_layer_effects * data);
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extern psd_status psd_layer_effects_blend_stroke(psd_context * context, psd_layer_record * layer, psd_layer_effects * data);
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extern psd_status psd_layer_effects_blend_bevel_emboss(psd_context * context, psd_layer_record * layer, psd_layer_effects * data);
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extern psd_bool psd_layer_check_restricted(psd_context * context, psd_layer_record * layer);
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extern void psd_layer_blend_normal(psd_context * context, psd_layer_record * layer, psd_rect * dst_rect);
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extern void psd_layer_blend(psd_context * context, psd_layer_record * layer, psd_rect * dst_rect);
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extern void psd_layer_blend_normal_restricted(psd_context * context, psd_layer_record * layer, psd_rect * dst_rect);
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extern void psd_layer_blend_restricted(psd_context * context, psd_layer_record * layer, psd_rect * dst_rect);
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// Effects Layer (Photoshop 5.0)
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psd_status psd_get_layer_effects(psd_context * context, psd_layer_record * layer)
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{
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psd_layer_effects * data;
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psd_int i, size;
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psd_uint tag;
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layer->layer_info_type[layer->layer_info_count] = psd_layer_info_type_effects;
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data = (psd_layer_effects *)psd_malloc(sizeof(psd_layer_effects));
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if(data == NULL)
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return psd_status_malloc_failed;
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memset(data, 0, sizeof(psd_layer_effects));
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layer->layer_info_data[layer->layer_info_count] = (psd_uint)(void *)data;
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layer->layer_info_count ++;
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// Version: 0
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if(psd_stream_get_short(context) != 0)
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return psd_status_effects_unsupport_version;
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// Effects count: may be 6 (for the 6 effects in Photoshop 5 and 6) or 7 (for
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// Photoshop 7.0)
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data->effects_count = psd_stream_get_short(context);
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for(i = 0; i < data->effects_count; i ++)
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{
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// Signature: '8BIM'
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tag = psd_stream_get_int(context);
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if(tag != '8BIM')
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return psd_status_effects_signature_error;
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// Effects signatures
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tag = psd_stream_get_int(context);
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switch(tag)
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{
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case 'cmnS': // common state
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// Effects layer, common state info
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// Size of next three items: 7
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size = psd_stream_get_int(context);
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psd_assert(size == 7);
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// Version: 0
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if(psd_stream_get_int(context) != 0)
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return psd_status_common_state_unsupport_version;
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// Visible: always psd_true
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data->visible = psd_stream_get_bool(context);
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// Unused: always 0
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psd_stream_get_short(context);
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break;
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case 'dsdw': // drop shadow
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psd_get_layer_drop_shadow(context, &data->drop_shadow);
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data->fill[psd_layer_effects_type_drop_shadow] = psd_true;
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data->valid[psd_layer_effects_type_drop_shadow] = psd_true;
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break;
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case 'isdw': // inner shadow
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psd_get_layer_inner_shadow(context, &data->inner_shadow);
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data->fill[psd_layer_effects_type_inner_shadow] = psd_true;
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data->valid[psd_layer_effects_type_inner_shadow] = psd_true;
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break;
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case 'oglw': // outer glow
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psd_get_layer_outer_glow(context, &data->outer_glow);
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data->fill[psd_layer_effects_type_outer_glow] = psd_true;
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data->valid[psd_layer_effects_type_outer_glow] = psd_true;
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break;
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case 'iglw': // inner glow
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psd_get_layer_inner_glow(context, &data->inner_glow);
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data->fill[psd_layer_effects_type_inner_glow] = psd_true;
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data->valid[psd_layer_effects_type_inner_glow] = psd_true;
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break;
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case 'bevl': // bevel
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psd_get_layer_bevel_emboss(context, &data->bevel_emboss);
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data->fill[psd_layer_effects_type_bevel_emboss] = psd_true;
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data->valid[psd_layer_effects_type_bevel_emboss] = psd_true;
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break;
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case 'sofi': // solid fill (Photoshop 7.0)
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psd_get_layer_color_overlay(context, &data->color_overlay);
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data->fill[psd_layer_effects_type_color_overlay] = psd_true;
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data->valid[psd_layer_effects_type_color_overlay] = psd_true;
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break;
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default:
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psd_assert(0);
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return psd_status_unsupport_effects_type;
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}
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}
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return psd_status_done;
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}
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// Object-based effects layer info (Photoshop 6.0)
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psd_status psd_get_layer_effects2(psd_context * context, psd_layer_record * layer)
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{
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psd_layer_effects * data;
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psd_int length, number_items;
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psd_uint rootkey, type, key;
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psd_uchar keychar[256];
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layer->layer_info_type[layer->layer_info_count] = psd_layer_info_type_effects2;
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data = (psd_layer_effects *)psd_malloc(sizeof(psd_layer_effects));
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if(data == NULL)
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return psd_status_malloc_failed;
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memset(data, 0, sizeof(psd_layer_effects));
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layer->layer_info_data[layer->layer_info_count] = (psd_uint)(void *)data;
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layer->layer_info_count ++;
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// Object effects version: 0
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if(psd_stream_get_int(context) != 0)
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return psd_status_effects_unsupport_version;
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// Descriptor version ( = 16 for Photoshop 6.0).
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if(psd_stream_get_int(context) != 16)
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return psd_status_effects_unsupport_version;
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// Unicode string: name from classID
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length = psd_stream_get_int(context) * 2;
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psd_stream_get_null(context, length);
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// classID: 4 bytes (length), followed either by string or (if length is zero) 4-
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// byte classID
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length = psd_stream_get_int(context);
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if(length == 0)
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psd_stream_get_int(context);
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else
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psd_stream_get_null(context, length);
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// Number of items in descriptor
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number_items = psd_stream_get_int(context);
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while(number_items--)
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{
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length = psd_stream_get_int(context);
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if(length == 0)
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rootkey = psd_stream_get_int(context);
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else
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{
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rootkey = 0;
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psd_stream_get(context, keychar, length);
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keychar[length] = 0;
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}
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// Type: OSType key
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type = psd_stream_get_int(context);
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switch(rootkey)
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{
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case 0:
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// pattern overlay
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if(strcmp(keychar, "patternFill") == 0)
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{
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// Descriptor
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psd_assert(type == 'Objc');
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psd_get_layer_pattern_overlay2(context, &data->pattern_overlay);
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data->fill[psd_layer_effects_type_pattern_overlay] = psd_true;
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data->valid[psd_layer_effects_type_pattern_overlay] = psd_true;
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data->effects_count ++;
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}
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else
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{
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psd_assert(0);
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psd_stream_get_object_null(type, context);
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}
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break;
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// scale, do not used
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case 'Scl ':
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// Unit psd_float
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psd_assert(type == 'UntF');
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// percent
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key = psd_stream_get_int(context);
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psd_assert(key == '#Prc');
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// Actual value (double)
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psd_stream_get_double(context);
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number_items --;
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length = psd_stream_get_int(context);
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if(length == 0)
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psd_stream_get_int(context);
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else
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psd_stream_get_null(context, length);
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// Type: OSType key
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type = psd_stream_get_int(context);
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psd_assert(type == 'bool');
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// Boolean value
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data->visible = psd_stream_get_bool(context);
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break;
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// drop shadow
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case 'DrSh':
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// Descriptor
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psd_assert(type == 'Objc');
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psd_get_layer_drop_shadow2(context, &data->drop_shadow);
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data->fill[psd_layer_effects_type_drop_shadow] = psd_true;
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data->valid[psd_layer_effects_type_drop_shadow] = psd_true;
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data->effects_count ++;
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break;
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// inner shadow
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case 'IrSh':
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// Descriptor
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psd_assert(type == 'Objc');
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psd_get_layer_inner_shadow2(context, &data->inner_shadow);
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data->fill[psd_layer_effects_type_inner_shadow] = psd_true;
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data->valid[psd_layer_effects_type_inner_shadow] = psd_true;
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data->effects_count ++;
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break;
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// outer glow
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case 'OrGl':
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// Descriptor
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psd_assert(type == 'Objc');
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psd_get_layer_outer_glow2(context, &data->outer_glow);
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data->fill[psd_layer_effects_type_outer_glow] = psd_true;
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data->valid[psd_layer_effects_type_outer_glow] = psd_true;
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data->effects_count ++;
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break;
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// inner glow
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case 'IrGl':
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// Descriptor
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psd_assert(type == 'Objc');
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psd_get_layer_inner_glow2(context, &data->inner_glow);
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data->fill[psd_layer_effects_type_inner_glow] = psd_true;
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data->valid[psd_layer_effects_type_inner_glow] = psd_true;
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data->effects_count ++;
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break;
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// bevel and emboss
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case 'ebbl':
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// Descriptor
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psd_assert(type == 'Objc');
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psd_get_layer_bevel_emboss2(context, &data->bevel_emboss);
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data->fill[psd_layer_effects_type_bevel_emboss] = psd_true;
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data->valid[psd_layer_effects_type_bevel_emboss] = psd_true;
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data->effects_count ++;
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break;
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// satin
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case 'ChFX':
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// Descriptor
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psd_assert(type == 'Objc');
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psd_get_layer_satin2(context, &data->satin);
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data->fill[psd_layer_effects_type_satin] = psd_true;
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data->valid[psd_layer_effects_type_satin] = psd_true;
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data->effects_count ++;
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break;
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// color overlay
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case 'SoFi':
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// Descriptor
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psd_assert(type == 'Objc');
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psd_get_layer_color_overlay2(context, &data->color_overlay);
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data->fill[psd_layer_effects_type_color_overlay] = psd_true;
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data->valid[psd_layer_effects_type_color_overlay] = psd_true;
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data->effects_count ++;
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break;
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// gradient overlay
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case 'GrFl':
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// Descriptor
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psd_assert(type == 'Objc');
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psd_get_layer_gradient_overlay2(context, &data->gradient_overlay);
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data->fill[psd_layer_effects_type_gradient_overlay] = psd_true;
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data->valid[psd_layer_effects_type_gradient_overlay] = psd_true;
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data->effects_count ++;
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break;
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// stroke
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case 'FrFX':
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// Descriptor
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psd_assert(type == 'Objc');
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psd_get_layer_stroke2(context, &data->stroke);
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data->fill[psd_layer_effects_type_stroke] = psd_true;
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data->valid[psd_layer_effects_type_stroke] = psd_true;
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data->effects_count ++;
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break;
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default:
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psd_assert(0);
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psd_stream_get_object_null(type, context);
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break;
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}
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}
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return psd_status_done;
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}
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psd_status psd_layer_effects_update(psd_layer_record * layer, psd_layer_effects_type type)
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{
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psd_layer_effects * data = NULL;
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psd_int i;
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if(layer == NULL)
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return psd_status_invalid_layer;
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if(type < 0 || type >= psd_layer_effects_type_count)
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return psd_status_invalid_layer_effects;
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for(i = 0; i < layer->layer_info_count; i ++)
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{
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if(layer->layer_info_type[i] == psd_layer_info_type_effects)
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{
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data = (psd_layer_effects *)layer->layer_info_data[i];
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break;
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}
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}
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if(data == NULL)
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return psd_status_invalid_layer_effects;
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data->valid[type] = psd_true;
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return psd_status_done;
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}
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#ifdef PSD_SUPPORT_EFFECTS_BLEND
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psd_static void psd_layer_blend_effects_image(psd_context * context, psd_layer_record * layer,
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psd_rect * dst_rect, psd_layer_effects * data, psd_int index)
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{
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psd_rect layer_rect, mask_rect;
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psd_layer_record effects_layer;
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if(data->image_data[index] == NULL || data->opacity[index] == 0)
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return;
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memcpy(&effects_layer, layer, sizeof(psd_layer_record));
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effects_layer.left = data->left[index] + layer->left;
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effects_layer.top = data->top[index] + layer->top;
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effects_layer.right = data->right[index] + layer->left;
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effects_layer.bottom = data->bottom[index] + layer->top;
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effects_layer.width = data->width[index];
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effects_layer.height = data->height[index];
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effects_layer.fill_opacity = data->opacity[index];
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effects_layer.blend_mode = data->blend_mode[index];
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effects_layer.image_data = data->image_data[index];
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effects_layer.layer_mask_info.disabled = psd_true;
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psd_make_rect(&layer_rect, effects_layer.left, effects_layer.top, effects_layer.right, effects_layer.bottom);
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if(psd_incept_rect(dst_rect, &layer_rect, &layer_rect) == psd_true)
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{
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if(effects_layer.layer_mask_info.disabled == psd_false && effects_layer.layer_mask_info.mask_data != NULL && effects_layer.layer_mask_info.default_color == 0)
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{
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psd_make_rect(&mask_rect, effects_layer.layer_mask_info.left, effects_layer.layer_mask_info.top,
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effects_layer.layer_mask_info.right, effects_layer.layer_mask_info.bottom);
|
|
if(psd_incept_rect(&mask_rect, &layer_rect, &layer_rect) == psd_false)
|
|
return;
|
|
}
|
|
|
|
if(psd_layer_check_restricted(context, &effects_layer) == psd_true)
|
|
{
|
|
if(effects_layer.blend_mode != psd_blend_mode_normal ||
|
|
(effects_layer.group_layer != NULL && effects_layer.group_layer->divider_blend_mode != psd_blend_mode_pass_through))
|
|
psd_layer_blend_restricted(context, &effects_layer, &layer_rect);
|
|
else
|
|
psd_layer_blend_normal_restricted(context, &effects_layer, &layer_rect);
|
|
}
|
|
else
|
|
{
|
|
if(effects_layer.blend_mode != psd_blend_mode_normal ||
|
|
(effects_layer.group_layer != NULL && effects_layer.group_layer->divider_blend_mode != psd_blend_mode_pass_through))
|
|
psd_layer_blend(context, &effects_layer, &layer_rect);
|
|
else
|
|
psd_layer_blend_normal(context, &effects_layer, &layer_rect);
|
|
}
|
|
}
|
|
}
|
|
|
|
psd_bool psd_layer_effects_blend_background(psd_context * context, psd_layer_record * layer, psd_rect * dst_rect)
|
|
{
|
|
psd_layer_effects * data = NULL;
|
|
psd_int i;
|
|
|
|
if(layer->image_data == NULL || layer->width <= 0 || layer->height <= 0)
|
|
return psd_false;
|
|
|
|
for(i = 0; i < layer->layer_info_count; i ++)
|
|
{
|
|
if(layer->layer_info_type[i] == psd_layer_info_type_effects2)
|
|
{
|
|
data = (psd_layer_effects *)layer->layer_info_data[i];
|
|
break;
|
|
}
|
|
}
|
|
if(data == NULL)
|
|
{
|
|
for(i = 0; i < layer->layer_info_count; i ++)
|
|
{
|
|
if(layer->layer_info_type[i] == psd_layer_info_type_effects)
|
|
{
|
|
data = (psd_layer_effects *)layer->layer_info_data[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(data == NULL)
|
|
return psd_false;
|
|
|
|
if(data->effects_count == 0 || data->visible == psd_false)
|
|
return psd_false;
|
|
|
|
for(i = psd_layer_effects_type_count - 1; i >= 0; i --)
|
|
{
|
|
if(data->fill[i] == psd_false)
|
|
continue;
|
|
|
|
switch(i)
|
|
{
|
|
case psd_layer_effects_type_drop_shadow:
|
|
if(data->drop_shadow.effect_enable == psd_false)
|
|
continue;
|
|
if(data->valid[i] == psd_true)
|
|
psd_layer_effects_blend_drop_shadow(context, layer, data);
|
|
break;
|
|
case psd_layer_effects_type_bevel_emboss:
|
|
if(data->bevel_emboss.effect_enable == psd_false)
|
|
continue;
|
|
if(data->valid[i] == psd_true)
|
|
NULL;
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
|
|
if(i == psd_layer_effects_type_bevel_emboss)
|
|
{
|
|
psd_layer_blend_effects_image(context, layer, dst_rect, data,
|
|
psd_layer_effects_bevel_emboss_outer_shadow);
|
|
psd_layer_blend_effects_image(context, layer, dst_rect, data,
|
|
psd_layer_effects_bevel_emboss_inner_shadow);
|
|
}
|
|
else
|
|
{
|
|
psd_layer_blend_effects_image(context, layer, dst_rect, data, i);
|
|
}
|
|
}
|
|
|
|
return psd_true;
|
|
}
|
|
|
|
psd_bool psd_layer_effects_blend_foreground(psd_context * context, psd_layer_record * layer, psd_rect * dst_rect)
|
|
{
|
|
psd_layer_effects * data = NULL;
|
|
psd_int i;
|
|
|
|
if(layer->image_data == NULL || layer->width <= 0 || layer->height <= 0)
|
|
return psd_false;
|
|
|
|
for(i = 0; i < layer->layer_info_count; i ++)
|
|
{
|
|
if(layer->layer_info_type[i] == psd_layer_info_type_effects2)
|
|
{
|
|
data = (psd_layer_effects *)layer->layer_info_data[i];
|
|
break;
|
|
}
|
|
}
|
|
if(data == NULL)
|
|
{
|
|
for(i = 0; i < layer->layer_info_count; i ++)
|
|
{
|
|
if(layer->layer_info_type[i] == psd_layer_info_type_effects)
|
|
{
|
|
data = (psd_layer_effects *)layer->layer_info_data[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(data == NULL)
|
|
return psd_false;
|
|
|
|
if(data->effects_count == 0 || data->visible == psd_false)
|
|
return psd_false;
|
|
|
|
for(i = psd_layer_effects_type_count - 1; i >= 0; i --)
|
|
{
|
|
if(data->fill[i] == psd_false)
|
|
continue;
|
|
|
|
switch(i)
|
|
{
|
|
case psd_layer_effects_type_inner_shadow:
|
|
if(data->inner_shadow.effect_enable == psd_false)
|
|
continue;
|
|
if(data->valid[i] == psd_true)
|
|
psd_layer_effects_blend_inner_shadow(context, layer, data);
|
|
break;
|
|
case psd_layer_effects_type_outer_glow:
|
|
if(data->outer_glow.effect_enable == psd_false)
|
|
continue;
|
|
if(data->valid[i] == psd_true)
|
|
psd_layer_effects_blend_outer_glow(context, layer, data);
|
|
break;
|
|
case psd_layer_effects_type_inner_glow:
|
|
if(data->inner_glow.effect_enable == psd_false)
|
|
continue;
|
|
if(data->valid[i] == psd_true)
|
|
psd_layer_effects_blend_inner_glow(context, layer, data);
|
|
break;
|
|
case psd_layer_effects_type_bevel_emboss:
|
|
if(data->bevel_emboss.effect_enable == psd_false)
|
|
continue;
|
|
// do nothing
|
|
break;
|
|
case psd_layer_effects_type_satin:
|
|
if(data->satin.effect_enable == psd_false)
|
|
continue;
|
|
if(data->valid[i] == psd_true)
|
|
psd_layer_effects_blend_satin(context, layer, data);
|
|
break;
|
|
case psd_layer_effects_type_color_overlay:
|
|
if(data->color_overlay.effect_enable == psd_false)
|
|
continue;
|
|
if(data->valid[i] == psd_true)
|
|
psd_layer_effects_blend_color_overlay(context, layer, data);
|
|
break;
|
|
case psd_layer_effects_type_gradient_overlay:
|
|
if(data->gradient_overlay.effect_enable == psd_false)
|
|
continue;
|
|
if(data->valid[i] == psd_true)
|
|
psd_layer_effects_blend_gradient_overlay(context, layer, data);
|
|
break;
|
|
case psd_layer_effects_type_pattern_overlay:
|
|
if(data->pattern_overlay.effect_enable == psd_false)
|
|
continue;
|
|
if(data->valid[i] == psd_true)
|
|
psd_layer_effects_blend_pattern_overlay(context, layer, data);
|
|
break;
|
|
case psd_layer_effects_type_stroke:
|
|
if(data->stroke.effect_enable == psd_false)
|
|
continue;
|
|
if(data->valid[i] == psd_true)
|
|
psd_layer_effects_blend_stroke(context, layer, data);
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
|
|
if(data->image_data[i] == NULL)
|
|
continue;
|
|
|
|
if(i == psd_layer_effects_type_bevel_emboss)
|
|
{
|
|
psd_layer_blend_effects_image(context, layer, dst_rect, data,
|
|
psd_layer_effects_bevel_emboss_outer_light);
|
|
psd_layer_blend_effects_image(context, layer, dst_rect, data,
|
|
psd_layer_effects_bevel_emboss_inner_light);
|
|
psd_layer_blend_effects_image(context, layer, dst_rect, data,
|
|
psd_layer_effects_bevel_emboss_texture);
|
|
}
|
|
else
|
|
{
|
|
psd_layer_blend_effects_image(context, layer, dst_rect, data, i);
|
|
}
|
|
}
|
|
|
|
return psd_true;
|
|
}
|
|
|
|
void psd_effects_add_noise(psd_bitmap * bitmap, psd_int noise, psd_int left, psd_int top, psd_context * context)
|
|
{
|
|
psd_int i, j, x, y, width, height;
|
|
psd_int src_alpha, dst_alpha, next_alpha;
|
|
psd_argb_color * src_data, * dst_data;
|
|
psd_uchar * rand_data;
|
|
psd_bitmap noise_bmp;
|
|
|
|
width = bitmap->width;
|
|
height = bitmap->height;
|
|
psd_get_bitmap(&noise_bmp, width, height, context);
|
|
psd_fill_bitmap(&noise_bmp, psd_color_clear);
|
|
|
|
for(i = PSD_MAX(-top, 0); i < height; i ++)
|
|
{
|
|
if(i + top >= context->height)
|
|
break;
|
|
|
|
src_data = bitmap->image_data + i * bitmap->width + PSD_MAX(-left, 0);
|
|
rand_data = context->rand_data + (i + top) * context->width + left;
|
|
for(j = PSD_MAX(-left, 0); j < width; j ++, src_data ++, rand_data ++)
|
|
{
|
|
if(j + left >= context->width)
|
|
break;
|
|
|
|
x = j + (*rand_data >> 4) - 8;
|
|
y = i + (*rand_data & 0x0F) - 8;
|
|
x = (x + j) >> 1;
|
|
y = (y + i) >> 1;
|
|
if(x < 0 || x >= width || y < 0 || y >= height)
|
|
continue;
|
|
|
|
src_alpha = PSD_GET_ALPHA_COMPONENT(*src_data);
|
|
dst_data = noise_bmp.image_data + y * width + x;
|
|
dst_alpha = PSD_GET_ALPHA_COMPONENT(*dst_data);
|
|
if(dst_alpha + src_alpha <= 255)
|
|
{
|
|
dst_alpha = dst_alpha + src_alpha;
|
|
*dst_data = (*src_data & 0x00FFFFFF) | (dst_alpha << 24);
|
|
}
|
|
else
|
|
{
|
|
*dst_data = (*src_data & 0x00FFFFFF) | 0xFF000000;
|
|
if(x + 1 < width)
|
|
{
|
|
next_alpha = dst_alpha + src_alpha - 255;
|
|
*(dst_data + 1) = (*src_data & 0x00FFFFFF) | (next_alpha << 24);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
noise = noise * 256 / 100;
|
|
if(noise == 256)
|
|
{
|
|
psd_copy_bitmap(bitmap, &noise_bmp);
|
|
}
|
|
else
|
|
{
|
|
src_data = noise_bmp.image_data;
|
|
dst_data = bitmap->image_data;
|
|
for(i = width * height; i --; src_data ++, dst_data ++)
|
|
{
|
|
src_alpha = PSD_GET_ALPHA_COMPONENT(*src_data);
|
|
dst_alpha = PSD_GET_ALPHA_COMPONENT(*dst_data);
|
|
dst_alpha = ((dst_alpha << 8) + (src_alpha - dst_alpha) * noise) >> 8;
|
|
*dst_data = (*dst_data & 0x00FFFFFF) | (dst_alpha << 24);
|
|
}
|
|
}
|
|
}
|
|
|
|
void psd_effects_apply_gradient(psd_bitmap * bitmap, psd_argb_color * gradient_table, psd_bool edge_hidden,
|
|
psd_int jitter, psd_int left, psd_int top, psd_context * context)
|
|
{
|
|
psd_int i, j, alpha, gradient_index;
|
|
psd_argb_color * dst_data;
|
|
psd_uchar * rand_data;
|
|
|
|
if(jitter > 0)
|
|
{
|
|
jitter = jitter * 256 / 100;
|
|
for(i = PSD_MAX(-top, 0); i < bitmap->height; i ++)
|
|
{
|
|
if(i + top >= context->height)
|
|
break;
|
|
|
|
dst_data = bitmap->image_data + i * bitmap->width + PSD_MAX(-left, 0);
|
|
rand_data = context->rand_data + (i + top) * context->width + left;
|
|
for(j = PSD_MAX(-left, 0); j < bitmap->width; j ++, dst_data ++, rand_data ++)
|
|
{
|
|
if(j + left >= context->width)
|
|
break;
|
|
alpha = PSD_GET_ALPHA_COMPONENT(*dst_data);
|
|
gradient_index = 255 - alpha;
|
|
gradient_index += jitter * *rand_data >> 8;
|
|
gradient_index &= 0xFF;
|
|
|
|
if(edge_hidden == psd_true && alpha < 24)
|
|
{
|
|
if(PSD_GET_ALPHA_COMPONENT(gradient_table[gradient_index]) != 255)
|
|
{
|
|
*dst_data = gradient_table[gradient_index];
|
|
}
|
|
else
|
|
{
|
|
*dst_data = (gradient_table[gradient_index] & 0x00FFFFFF) |
|
|
(alpha * 10 * PSD_GET_ALPHA_COMPONENT(gradient_table[gradient_index]) >> 8 << 24);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*dst_data = gradient_table[gradient_index];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
dst_data = bitmap->image_data;
|
|
for(i = bitmap->width * bitmap->height; i --; )
|
|
{
|
|
alpha = PSD_GET_ALPHA_COMPONENT(*dst_data);
|
|
if(edge_hidden == psd_true && alpha < 24)
|
|
{
|
|
if(PSD_GET_ALPHA_COMPONENT(gradient_table[255 - alpha]) != 255)
|
|
{
|
|
*dst_data = gradient_table[255 - alpha];
|
|
}
|
|
else
|
|
{
|
|
*dst_data = (gradient_table[255 - alpha] & 0x00FFFFFF) |
|
|
(alpha * 10 * PSD_GET_ALPHA_COMPONENT(gradient_table[255 - alpha]) >> 8 << 24);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*dst_data = gradient_table[255 - alpha];
|
|
}
|
|
dst_data ++;
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif // ifdef PSD_SUPPORT_EFFECTS_BLEND
|
|
|
|
|
|
psd_static void psd_gradient_color_free(psd_gradient_color * gradient_color)
|
|
{
|
|
psd_freeif(gradient_color->name);
|
|
psd_freeif(gradient_color->color_stop);
|
|
psd_freeif(gradient_color->transparency_stop);
|
|
}
|
|
|
|
psd_static void psd_pattern_info_free(psd_pattern_info * pattern_info)
|
|
{
|
|
psd_freeif(pattern_info->name);
|
|
}
|
|
|
|
void psd_layer_effects_free(psd_uint layer_info)
|
|
{
|
|
psd_layer_effects * data;
|
|
psd_int i;
|
|
|
|
data = (psd_layer_effects *)layer_info;
|
|
if(data == NULL)
|
|
return;
|
|
|
|
for(i = 0; i < psd_layer_effects_image_count; i ++)
|
|
{
|
|
psd_freeif(data->image_data[i]);
|
|
data->image_data[i] = NULL;
|
|
}
|
|
|
|
psd_pattern_info_free(&data->bevel_emboss.texture_pattern_info);
|
|
psd_gradient_color_free(&data->gradient_overlay.gradient_color);
|
|
psd_pattern_info_free(&data->pattern_overlay.pattern_info);
|
|
psd_gradient_color_free(&data->stroke.gradient_color);
|
|
psd_pattern_info_free(&data->stroke.pattern_info);
|
|
|
|
psd_free(data);
|
|
}
|
|
|