547 lines
16 KiB
C
547 lines
16 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: stroke.c, created by Patrick in 2006.06.18, libpsd@graphest.com Exp $
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*/
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#include <math.h>
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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_gradient.h"
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#include "psd_math.h"
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#include "psd_descriptor.h"
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extern psd_bool psd_draw_stroke(psd_bitmap * dst_bmp, psd_bitmap * src_bmp, psd_int stroke_size);
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extern psd_status psd_pattern_fill(psd_bitmap * dst_bmp, psd_pattern * pattern, psd_int scale, psd_int offset_x, psd_int offset_y);
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psd_static void psd_set_layer_stroke_default(psd_layer_effects_stroke * stroke)
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{
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stroke->size = 3;
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stroke->position = psd_stroke_outside;
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stroke->blend_mode = psd_blend_mode_normal;
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stroke->opacity = 255;
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stroke->fill_type = psd_fill_solid_color;
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stroke->fill_color = psd_color_red;
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stroke->gradient_reverse = psd_false;
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stroke->gradient_style = 0;
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stroke->gradient_align = psd_true;
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stroke->gradient_angle = 90;
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stroke->gradient_scale = 100;
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stroke->pattern_scale = 100;
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stroke->pattern_link = psd_true;
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}
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psd_status psd_get_layer_stroke2(psd_context * context, psd_layer_effects_stroke * stroke)
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{
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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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psd_set_layer_stroke_default(stroke);
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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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if(strcmp(keychar, "phase") == 0)
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{
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psd_assert(type == 'Objc');
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psd_stream_get_object_point(&stroke->pattern_horz_phase,
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&stroke->pattern_vert_phase, context);
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stroke->pattern_horz_phase = 0;
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stroke->pattern_vert_phase = 0;
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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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// effect enable
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case 'enab':
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psd_assert(type == 'bool');
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stroke->effect_enable = psd_stream_get_bool(context);
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break;
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// position
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case 'Styl':
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psd_assert(type == 'enum');
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// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
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// byte typeID
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length = psd_stream_get_int(context);
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psd_assert(length == 0);
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key = psd_stream_get_int(context);
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// fill style
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psd_assert(key == 'FStl');
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length = psd_stream_get_int(context);
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if(length == 0)
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key = psd_stream_get_int(context);
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else
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{
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key = 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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switch(key)
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{
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case 'OutF':
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stroke->position = psd_stroke_outside;
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break;
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case 'InsF':
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stroke->position = psd_stroke_inside;
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break;
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case 'CtrF':
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stroke->position = psd_stroke_center;
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break;
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default:
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psd_assert(0);
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break;
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}
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break;
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// fill type
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case 'PntT':
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psd_assert(type == 'enum');
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// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
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// byte typeID
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length = psd_stream_get_int(context);
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psd_assert(length == 0);
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key = psd_stream_get_int(context);
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// fill style
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psd_assert(key == 'FrFl');
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length = psd_stream_get_int(context);
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if(length == 0)
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key = psd_stream_get_int(context);
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else
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{
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key = 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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switch(key)
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{
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case 'SClr':
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stroke->fill_type = psd_fill_solid_color;
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break;
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case 'GrFl':
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stroke->fill_type = psd_fill_gradient;
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break;
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case 'Ptrn':
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stroke->fill_type = psd_fill_pattern;
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break;
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default:
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psd_assert(0);
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break;
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}
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break;
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// blend mode
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case 'Md ':
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psd_assert(type == 'enum');
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// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
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// byte typeID
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length = psd_stream_get_int(context);
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psd_assert(length == 0);
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key = psd_stream_get_int(context);
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// blend mode
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psd_assert(key == 'BlnM');
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stroke->blend_mode = psd_stream_get_object_blend_mode(context);
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break;
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// opacity
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case 'Opct':
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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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stroke->opacity = (psd_int)(psd_stream_get_double(context) * 2.55 + 0.5);
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break;
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// size
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case 'Sz ':
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psd_assert(type == 'UntF');
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// pixels: tagged unit value
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key = psd_stream_get_int(context);
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psd_assert(key == '#Pxl');
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stroke->size = (psd_int)psd_stream_get_double(context);
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break;
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// color
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case 'Clr ':
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// Descriptor
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psd_assert(type == 'Objc');
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stroke->fill_color = psd_stream_get_object_color(context);
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break;
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// gradient color
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case 'Grad':
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// Descriptor
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psd_assert(type == 'Objc');
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psd_stream_get_object_gradient_color(&stroke->gradient_color, context);
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break;
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case 'Angl': // angle
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// Unit psd_float
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psd_assert(type == 'UntF');
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// '#Ang' = angle: base degrees
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key = psd_stream_get_int(context);
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psd_assert(key == '#Ang');
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// Actual value (double)
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stroke->gradient_angle = (psd_int)psd_stream_get_double(context);
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break;
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case 'Type': // gradient style
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// Enumerated
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psd_assert(type == 'enum');
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// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
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// byte typeID
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length = psd_stream_get_int(context);
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psd_assert(length == 0);
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key = psd_stream_get_int(context);
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// Gradient Type
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psd_assert(key == 'GrdT');
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stroke->gradient_style = psd_stream_get_object_gradient_style(context);
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break;
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case 'Rvrs': // reverse
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// boolean
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psd_assert(type == 'bool');
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stroke->gradient_reverse = psd_stream_get_bool(context);
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break;
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case 'Scl ': // scale
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// Unit psd_float
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psd_assert(type == 'UntF');
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// '#Prc' = 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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if(stroke->fill_type == psd_fill_gradient)
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stroke->gradient_scale = (psd_int)psd_stream_get_double(context);
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else if(stroke->fill_type == psd_fill_pattern)
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stroke->pattern_scale = (psd_int)psd_stream_get_double(context);
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break;
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case 'Algn': // align with layer
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// boolean
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psd_assert(type == 'bool');
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stroke->gradient_align = psd_stream_get_bool(context);
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break;
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// offset, not documented
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case 'Ofst':
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psd_assert(type == 'Objc');
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psd_stream_get_object_point(&stroke->gradient_horz_offset,
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&stroke->gradient_vert_offset, context);
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break;
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// pattern
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case 'Ptrn':
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psd_assert(type == 'Objc');
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psd_stream_get_object_pattern_info(&stroke->pattern_info, context);
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break;
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// link with layer
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case 'Lnkd':
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psd_assert(type == 'bool');
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stroke->pattern_link = psd_stream_get_bool(context);
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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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#ifdef PSD_SUPPORT_EFFECTS_BLEND
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psd_status psd_layer_effects_blend_stroke(psd_context * context, psd_layer_record * layer, psd_layer_effects * data)
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{
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psd_layer_effects_stroke * stroke = &data->stroke;
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psd_int i, width, height, center_x, center_y, radius_x, radius_y, radius_corner;
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psd_int corner_angle, angle;
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psd_int sign_x = 1, sign_y = 1;
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psd_bitmap layer_bmp, src_bmp, dst_bmp;
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psd_layer_mask_info layer_mask_info;
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width = layer->width + stroke->size * 2;
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height = layer->height + stroke->size * 2;
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data->left[psd_layer_effects_type_stroke] = -stroke->size;
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data->top[psd_layer_effects_type_stroke] = -stroke->size;
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data->right[psd_layer_effects_type_stroke] = layer->width + stroke->size;
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data->bottom[psd_layer_effects_type_stroke] = layer->height + stroke->size;
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data->blend_mode[psd_layer_effects_type_stroke] = stroke->blend_mode;
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data->opacity[psd_layer_effects_type_stroke] = stroke->opacity;
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if(data->image_data[psd_layer_effects_type_stroke] != NULL)
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{
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if(data->width[psd_layer_effects_type_stroke] != width ||
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data->height[psd_layer_effects_type_stroke] != height)
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{
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psd_free(data->image_data[psd_layer_effects_type_stroke]);
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data->image_data[psd_layer_effects_type_stroke] = (psd_argb_color *)psd_malloc(width * height * 4);
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if(data->image_data[psd_layer_effects_type_stroke] == NULL)
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return psd_status_malloc_failed;
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}
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}
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else
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{
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data->image_data[psd_layer_effects_type_stroke] = (psd_argb_color *)psd_malloc(width * height * 4);
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if(data->image_data[psd_layer_effects_type_stroke] == NULL)
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return psd_status_malloc_failed;
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}
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data->width[psd_layer_effects_type_stroke] = width;
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data->height[psd_layer_effects_type_stroke] = height;
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layer_bmp.width = layer->width;
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layer_bmp.height = layer->height;
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layer_bmp.image_data = layer->image_data;
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psd_create_bitmap(&src_bmp, width, height);
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psd_inflate_bitmap(&src_bmp, &layer_bmp, stroke->size, stroke->size);
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dst_bmp.width = width;
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dst_bmp.height = height;
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dst_bmp.image_data = data->image_data[psd_layer_effects_type_stroke];
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psd_fill_bitmap(&dst_bmp, psd_color_clear);
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switch(stroke->position)
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{
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case psd_stroke_outside:
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psd_draw_stroke(&dst_bmp, &src_bmp, stroke->size * 2);
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psd_bitmap_find_edge(&src_bmp, psd_true);
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psd_bitmap_knock_out(&dst_bmp, &src_bmp);
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break;
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case psd_stroke_inside:
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psd_draw_stroke(&dst_bmp, &src_bmp, stroke->size * 2);
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psd_bitmap_find_edge(&src_bmp, psd_true);
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psd_bitmap_reverse_alpha_channel(&src_bmp);
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psd_bitmap_knock_out(&dst_bmp, &src_bmp);
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break;
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case psd_stroke_center:
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psd_draw_stroke(&dst_bmp, &src_bmp, stroke->size);
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break;
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default:
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psd_assert(0);
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break;
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}
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psd_inflate_bitmap(&src_bmp, &layer_bmp, stroke->size, stroke->size);
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memcpy(&layer_mask_info, &layer->layer_mask_info, sizeof(psd_layer_mask_info));
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if(layer_mask_info.disabled == psd_false && (layer_mask_info.default_color != 255 || layer_mask_info.mask_data != NULL))
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{
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layer_mask_info.left -= layer->left - stroke->size;
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layer_mask_info.top -= layer->top - stroke->size;
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layer_mask_info.right -= layer->left - stroke->size;
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layer_mask_info.bottom -= layer->top - stroke->size;
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psd_bitmap_blend_mask(&src_bmp, &layer_mask_info);
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}
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psd_bitmap_reverse_mixed_alpha_channel(&src_bmp);
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psd_bitmap_blend_alpha_channel(&dst_bmp, &src_bmp);
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switch(stroke->fill_type)
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{
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case psd_fill_solid_color:
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psd_fill_bitmap_without_alpha_channel(&dst_bmp, stroke->fill_color);
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break;
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case psd_fill_gradient:
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if(stroke->gradient_align == psd_false)
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{
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center_x = context->width / 2 + stroke->gradient_horz_offset * context->width / 100;
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center_y = context->height / 2 + stroke->gradient_vert_offset * context->height / 100;
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center_x -= layer->left;
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center_y -= layer->top;
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corner_angle = (psd_int)(atan((psd_float)context->height / context->width) * 180 / PSD_PI + 0.5);
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angle = stroke->gradient_angle;
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width = (context->width * stroke->gradient_scale + 100) / 200;
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height = (context->height * stroke->gradient_scale + 100) / 200;
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}
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else
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{
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center_x = width / 2 + stroke->gradient_horz_offset * layer->width / 100;
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center_y = height / 2 + stroke->gradient_vert_offset * layer->height / 100;
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switch(stroke->position)
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{
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case psd_stroke_outside:
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width = layer->width + stroke->size * 2;
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height = layer->height + stroke->size * 2;
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break;
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case psd_stroke_inside:
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width = layer->width;
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height = layer->height;
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break;
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case psd_stroke_center:
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width = layer->width + stroke->size;
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height = layer->height + stroke->size;
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break;
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}
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center_x += stroke->gradient_horz_offset * width / 100;
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center_y += stroke->gradient_vert_offset * height / 100;
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corner_angle = (psd_int)(atan((psd_float)height / width) * 180 / PSD_PI + 0.5);
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angle = stroke->gradient_angle;
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width = (width * stroke->gradient_scale + 100) / 200;
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height = (height * stroke->gradient_scale + 100) / 200;
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}
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if(angle < 0)
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angle += 360;
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if(angle >= 90 && angle < 180)
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{
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angle = 180 - angle;
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sign_x = -1;
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}
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else if(angle >= 180 && angle < 270)
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{
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angle = angle - 180;
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sign_x = -1;
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sign_y = -1;
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}
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else if(angle >= 270 && angle <= 360)
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{
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angle = 360 - angle;
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sign_y = -1;
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}
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if(angle <= corner_angle)
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{
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radius_x = width;
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radius_y = (psd_int)(radius_x * PSD_TAN(angle) + 0.5);
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}
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else
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{
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radius_y = height;
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radius_x = (psd_int)(radius_y / PSD_TAN(angle) + 0.5);
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}
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radius_corner = (psd_int)(psd_carm_sqrt((psd_float)(radius_x * radius_x + radius_y * radius_y)) + 0.5);
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switch(stroke->gradient_style)
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{
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case psd_gradient_style_linear:
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psd_gradient_fill_linear(&src_bmp, &stroke->gradient_color, stroke->gradient_reverse,
|
|
center_x - sign_x * radius_x, center_y + sign_y * radius_y,
|
|
center_x + sign_x * radius_x, center_y - sign_y * radius_y);
|
|
break;
|
|
case psd_gradient_style_radial:
|
|
psd_gradient_fill_radial(&src_bmp, &stroke->gradient_color, stroke->gradient_reverse,
|
|
center_x, center_y, radius_corner);
|
|
break;
|
|
case psd_gradient_style_angle:
|
|
psd_gradient_fill_angle(&src_bmp, &stroke->gradient_color, stroke->gradient_reverse,
|
|
center_x, center_y, stroke->gradient_angle);
|
|
break;
|
|
case psd_gradient_style_reflected:
|
|
psd_gradient_fill_reflected(&src_bmp, &stroke->gradient_color, stroke->gradient_reverse,
|
|
center_x - sign_x * radius_x, center_y + sign_y * radius_y,
|
|
center_x + sign_x * radius_x, center_y - sign_y * radius_y);
|
|
break;
|
|
case psd_gradient_style_diamond:
|
|
psd_gradient_fill_diamond(&src_bmp, &stroke->gradient_color, stroke->gradient_reverse,
|
|
center_x, center_y, radius_corner, stroke->gradient_angle);
|
|
break;
|
|
default:
|
|
psd_assert(0);
|
|
break;
|
|
}
|
|
|
|
psd_bitmap_copy_without_alpha_channel(&dst_bmp, &src_bmp);
|
|
break;
|
|
|
|
case psd_fill_pattern:
|
|
for(i = 0; i < context->pattern_count; i ++)
|
|
{
|
|
if(strcmp(context->patterns[i].unique_id, stroke->pattern_info.identifier) == 0)
|
|
{
|
|
psd_pattern_fill(&src_bmp, &context->patterns[i], stroke->pattern_scale,
|
|
stroke->pattern_horz_phase + stroke->size,
|
|
stroke->pattern_vert_phase + stroke->size);
|
|
break;
|
|
}
|
|
}
|
|
|
|
psd_bitmap_copy_without_alpha_channel(&dst_bmp, &src_bmp);
|
|
break;
|
|
|
|
default:
|
|
psd_assert(0);
|
|
break;
|
|
}
|
|
|
|
psd_free_bitmap(&src_bmp);
|
|
|
|
data->valid[psd_layer_effects_type_stroke] = psd_false;
|
|
|
|
return psd_status_done;
|
|
}
|
|
#endif
|
|
|