373 lines
10 KiB
C
373 lines
10 KiB
C
/**
|
|
* libpsd - Photoshop file formats (*.psd) decode library
|
|
* Copyright (C) 2004-2007 Graphest Software.
|
|
*
|
|
* libpsd is the legal property of its developers, whose names are too numerous
|
|
* to list here. Please refer to the COPYRIGHT file distributed with this
|
|
* source distribution.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU Library General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* $Id: satin.c, created by Patrick in 2006.06.18, libpsd@graphest.com Exp $
|
|
*/
|
|
|
|
#include <math.h>
|
|
#include "libpsd.h"
|
|
#include "psd_config.h"
|
|
#include "psd_system.h"
|
|
#include "psd_stream.h"
|
|
#include "psd_descriptor.h"
|
|
#include "psd_color.h"
|
|
#include "psd_rect.h"
|
|
#include "psd_bitmap.h"
|
|
#include "psd_math.h"
|
|
|
|
|
|
extern void psd_bitmap_gaussian_blur_alpha_channel(psd_bitmap * bitmap, psd_double radius);
|
|
|
|
|
|
psd_static void psd_set_layer_satin_default(psd_layer_effects_satin * satin)
|
|
{
|
|
psd_int i;
|
|
|
|
satin->blend_mode = psd_blend_mode_multiply;
|
|
satin->color = psd_color_black;
|
|
satin->opacity = 128;
|
|
satin->angle = 19;
|
|
satin->distance = 11;
|
|
satin->size = 14;
|
|
|
|
for(i = 0; i < 256; i ++)
|
|
satin->contour_lookup_table[i] = i;
|
|
satin->anti_aliased = psd_false;
|
|
satin->invert = psd_true;
|
|
}
|
|
|
|
psd_status psd_get_layer_satin2(psd_context * context, psd_layer_effects_satin * satin)
|
|
{
|
|
psd_int length, number_items;
|
|
psd_uint rootkey, type, key;
|
|
psd_uchar keychar[256];
|
|
|
|
psd_set_layer_satin_default(satin);
|
|
|
|
// Unicode string: name from classID
|
|
length = psd_stream_get_int(context) * 2;
|
|
psd_stream_get_null(context, length);
|
|
|
|
// classID: 4 bytes (length), followed either by string or (if length is zero) 4-
|
|
// byte classID
|
|
length = psd_stream_get_int(context);
|
|
if(length == 0)
|
|
psd_stream_get_int(context);
|
|
else
|
|
psd_stream_get_null(context, length);
|
|
|
|
// Number of items in descriptor
|
|
number_items = psd_stream_get_int(context);
|
|
|
|
while(number_items --)
|
|
{
|
|
length = psd_stream_get_int(context);
|
|
if(length == 0)
|
|
rootkey = psd_stream_get_int(context);
|
|
else
|
|
{
|
|
rootkey = 0;
|
|
psd_stream_get(context, keychar, length);
|
|
keychar[length] = 0;
|
|
}
|
|
// Type: OSType key
|
|
type = psd_stream_get_int(context);
|
|
|
|
switch(rootkey)
|
|
{
|
|
// effect enable
|
|
case 'enab':
|
|
psd_assert(type == 'bool');
|
|
satin->effect_enable = psd_stream_get_bool(context);
|
|
break;
|
|
|
|
// blend mode
|
|
case 'Md ':
|
|
psd_assert(type == 'enum');
|
|
|
|
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
|
|
// byte typeID
|
|
length = psd_stream_get_int(context);
|
|
psd_assert(length == 0);
|
|
key = psd_stream_get_int(context);
|
|
// blend mode
|
|
psd_assert(key == 'BlnM');
|
|
satin->blend_mode = psd_stream_get_object_blend_mode(context);
|
|
break;
|
|
|
|
// color
|
|
case 'Clr ':
|
|
// Descriptor
|
|
psd_assert(type == 'Objc');
|
|
satin->color = psd_stream_get_object_color(context);
|
|
break;
|
|
|
|
// anti-aliased
|
|
case 'AntA':
|
|
psd_assert(type == 'bool');
|
|
satin->anti_aliased = psd_stream_get_bool(context);
|
|
break;
|
|
|
|
// invert
|
|
case 'Invr':
|
|
psd_assert(type == 'bool');
|
|
satin->invert = psd_stream_get_bool(context);
|
|
break;
|
|
|
|
// opacity
|
|
case 'Opct':
|
|
psd_assert(type == 'UntF');
|
|
// percent
|
|
key = psd_stream_get_int(context);
|
|
psd_assert(key == '#Prc');
|
|
// Actual value (double)
|
|
satin->opacity = (psd_int)(psd_stream_get_double(context) * 2.55 + 0.5);
|
|
break;
|
|
|
|
// angle
|
|
case 'lagl':
|
|
psd_assert(type == 'UntF');
|
|
// angle: base degrees
|
|
key = psd_stream_get_int(context);
|
|
psd_assert(key == '#Ang');
|
|
satin->angle = (psd_int)psd_stream_get_double(context);
|
|
break;
|
|
|
|
// distance
|
|
case 'Dstn':
|
|
psd_assert(type == 'UntF');
|
|
// pixels: tagged unit value
|
|
key = psd_stream_get_int(context);
|
|
psd_assert(key == '#Pxl');
|
|
satin->distance = (psd_int)psd_stream_get_double(context);
|
|
break;
|
|
|
|
// size
|
|
case 'blur':
|
|
psd_assert(type == 'UntF');
|
|
// pixels: tagged unit value
|
|
key = psd_stream_get_int(context);
|
|
psd_assert(key == '#Pxl');
|
|
satin->size = (psd_int)psd_stream_get_double(context);
|
|
break;
|
|
|
|
// contour
|
|
case 'MpgS':
|
|
psd_assert(type == 'Objc');
|
|
psd_stream_get_object_contour(satin->contour_lookup_table, context);
|
|
break;
|
|
|
|
default:
|
|
psd_assert(0);
|
|
psd_stream_get_object_null(type, context);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return psd_status_done;
|
|
}
|
|
|
|
psd_static void psd_satin_blend_offset(psd_bitmap * dst_bmp, psd_bitmap * src_bmp, psd_bool invert,
|
|
psd_int offset_x, psd_int offset_y)
|
|
{
|
|
psd_int i, j, left1, left2, top1, top2, right1, right2, bottom1, bottom2,
|
|
x1, x2, y1, y2;
|
|
psd_int alpha1, alpha2, dst_alpha;
|
|
psd_argb_color * dst_data, * src_data1, * src_data2;
|
|
|
|
if(PSD_ABS(offset_x) >= dst_bmp->width || PSD_ABS(offset_y) >= dst_bmp->height)
|
|
return;
|
|
|
|
if(offset_x > 0)
|
|
{
|
|
left1 = offset_x;
|
|
right1 = src_bmp->width;
|
|
x1 = 0;
|
|
left2 = 0;
|
|
right2 = src_bmp->width - offset_x;
|
|
x2 = offset_x;
|
|
}
|
|
else
|
|
{
|
|
left1 = 0;
|
|
right1 = src_bmp->width + offset_x;
|
|
x1 = -offset_x;
|
|
left2 = -offset_x;
|
|
right2 = src_bmp->width;
|
|
x2 = 0;
|
|
}
|
|
if(offset_y > 0)
|
|
{
|
|
top1 = offset_y;
|
|
bottom1 = src_bmp->height;
|
|
y1 = 0;
|
|
top2 = 0;
|
|
bottom2 = src_bmp->height - offset_y;
|
|
y2 = offset_y;
|
|
}
|
|
else
|
|
{
|
|
top1 = 0;
|
|
bottom1 = src_bmp->height + offset_y;
|
|
y1 = -offset_y;
|
|
top2 = -offset_y;
|
|
bottom2 = src_bmp->height;
|
|
y2 = 0;
|
|
}
|
|
|
|
dst_data = dst_bmp->image_data;
|
|
for(i = 0; i < dst_bmp->height; i ++)
|
|
{
|
|
if(i >= top1 && i < bottom1)
|
|
src_data1 = src_bmp->image_data + (i - top1 + y1) * src_bmp->width + x1;
|
|
else
|
|
src_data1 = NULL;
|
|
if(i >= top2 && i < bottom2)
|
|
src_data2 = src_bmp->image_data + (i - top2 + y2) * src_bmp->width + x2;
|
|
else
|
|
src_data2 = NULL;
|
|
for(j = 0; j < dst_bmp->width; j ++)
|
|
{
|
|
if(src_data1 != NULL && j >= left1 && j < right1)
|
|
{
|
|
alpha1 = PSD_GET_ALPHA_COMPONENT(*src_data1);
|
|
src_data1 ++;
|
|
}
|
|
else
|
|
{
|
|
alpha1 = 0;
|
|
}
|
|
if(src_data2 != NULL && j >= left2 && j < right2)
|
|
{
|
|
alpha2 = PSD_GET_ALPHA_COMPONENT(*src_data2);
|
|
src_data2 ++;
|
|
}
|
|
else
|
|
{
|
|
alpha2 = 0;
|
|
}
|
|
|
|
dst_alpha = PSD_GET_ALPHA_COMPONENT(*dst_data);
|
|
if(invert == psd_true)
|
|
dst_alpha = dst_alpha * (255 - PSD_ABS(alpha1 - alpha2)) >> 8;
|
|
else
|
|
dst_alpha = dst_alpha * PSD_ABS(alpha1 - alpha2) >> 8;
|
|
*dst_data = (*dst_data & 0x00FFFFFF) | (dst_alpha << 24);
|
|
dst_data ++;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef PSD_SUPPORT_EFFECTS_BLEND
|
|
psd_status psd_layer_effects_blend_satin(psd_context * context, psd_layer_record * layer, psd_layer_effects * data)
|
|
{
|
|
psd_layer_effects_satin * satin = &data->satin;
|
|
psd_int width, height;
|
|
psd_int distance_x, distance_y;
|
|
psd_bitmap src_bmp, dst_bmp, knock_bmp, satin_bmp;
|
|
psd_layer_mask_info layer_mask_info;
|
|
|
|
data->left[psd_layer_effects_type_satin] = -satin->size;
|
|
data->top[psd_layer_effects_type_satin] = -satin->size;
|
|
width = layer->width + satin->size * 2;
|
|
height = layer->height + satin->size * 2;
|
|
data->right[psd_layer_effects_type_satin] = data->left[psd_layer_effects_type_satin] + width;
|
|
data->bottom[psd_layer_effects_type_satin] = data->top[psd_layer_effects_type_satin] + height;
|
|
data->blend_mode[psd_layer_effects_type_satin] = satin->blend_mode;
|
|
data->opacity[psd_layer_effects_type_satin] = satin->opacity;
|
|
|
|
if(data->image_data[psd_layer_effects_type_satin] != NULL)
|
|
{
|
|
if(data->width[psd_layer_effects_type_satin] != width ||
|
|
data->height[psd_layer_effects_type_satin] != height)
|
|
{
|
|
psd_free(data->image_data[psd_layer_effects_type_satin]);
|
|
data->image_data[psd_layer_effects_type_satin] = (psd_argb_color *)psd_malloc(width * height * 4);
|
|
if(data->image_data[psd_layer_effects_type_satin] == NULL)
|
|
return psd_status_malloc_failed;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
data->image_data[psd_layer_effects_type_satin] = (psd_argb_color *)psd_malloc(width * height * 4);
|
|
if(data->image_data[psd_layer_effects_type_satin] == NULL)
|
|
return psd_status_malloc_failed;
|
|
}
|
|
data->width[psd_layer_effects_type_satin] = width;
|
|
data->height[psd_layer_effects_type_satin] = height;
|
|
psd_color_memset(data->image_data[psd_layer_effects_type_satin], satin->color, width * height);
|
|
|
|
src_bmp.width = layer->width;
|
|
src_bmp.height = layer->height;
|
|
src_bmp.image_data = layer->image_data;
|
|
satin_bmp.width = width;
|
|
satin_bmp.height = height;
|
|
satin_bmp.image_data = data->image_data[psd_layer_effects_type_satin];
|
|
psd_create_bitmap(&dst_bmp, width, height);
|
|
|
|
if(satin->size == 0)
|
|
{
|
|
psd_fill_bitmap(&dst_bmp, satin->color);
|
|
psd_bitmap_copy_alpha_channel(&dst_bmp, &src_bmp);
|
|
}
|
|
else
|
|
{
|
|
psd_inflate_bitmap(&dst_bmp, &src_bmp, satin->size, satin->size);
|
|
psd_fill_bitmap_without_alpha_channel(&dst_bmp, satin->color);
|
|
}
|
|
|
|
psd_create_bitmap(&knock_bmp, width, height);
|
|
psd_copy_bitmap(&knock_bmp, &dst_bmp);
|
|
psd_bitmap_reverse_alpha_channel(&knock_bmp);
|
|
|
|
memcpy(&layer_mask_info, &layer->layer_mask_info, sizeof(psd_layer_mask_info));
|
|
if(layer_mask_info.disabled == psd_false && (layer_mask_info.default_color != 255 || layer_mask_info.mask_data != NULL))
|
|
{
|
|
layer_mask_info.left -= layer->left - satin->size;
|
|
layer_mask_info.top -= layer->top - satin->size;
|
|
layer_mask_info.right -= layer->left - satin->size;
|
|
layer_mask_info.bottom -= layer->top - satin->size;
|
|
psd_bitmap_blend_mask(&dst_bmp, &layer_mask_info);
|
|
}
|
|
|
|
psd_copy_bitmap(&satin_bmp, &dst_bmp);
|
|
|
|
psd_bitmap_gaussian_blur_alpha_channel(&dst_bmp, satin->size);
|
|
|
|
psd_bitmap_contour_alpha_channel(&dst_bmp, satin->contour_lookup_table,
|
|
satin->anti_aliased, psd_false);
|
|
|
|
distance_x = -(psd_int)(satin->distance * cos(PSD_PI * satin->angle / 180) + 0.5);
|
|
distance_y = (psd_int)(satin->distance * sin(PSD_PI * satin->angle / 180) + 0.5);
|
|
psd_satin_blend_offset(&satin_bmp, &dst_bmp, satin->invert, distance_x, distance_y);
|
|
|
|
psd_bitmap_knock_out(&satin_bmp, &knock_bmp);
|
|
psd_free_bitmap(&knock_bmp);
|
|
psd_free_bitmap(&dst_bmp);
|
|
|
|
data->valid[psd_layer_effects_type_satin] = psd_false;
|
|
|
|
return psd_status_done;
|
|
}
|
|
#endif
|
|
|