/* sample_colorize.c
* A GIMP Plug-In by Wolfgang Hofer
*/
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 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 General Public License
* along with this program. If not, see .
*/
#include "config.h"
#include
#include
#include
#include
#include
#include "libgimp/stdplugins-intl.h"
/* Some useful macros */
#define RESPONSE_RESET 1
#define RESPONSE_GET_COLORS 2
#define PLUG_IN_PROC "plug-in-sample-colorize"
#define PLUG_IN_BINARY "sample-colorize"
#define PLUG_IN_ROLE "gimp-sample-colorize"
#define NUMBER_IN_ARGS 13
#define TILE_CACHE_SIZE 32
#define LUMINOSITY_0(X) ((X[0] * 30 + X[1] * 59 + X[2] * 11))
#define LUMINOSITY_1(X) ((X[0] * 30 + X[1] * 59 + X[2] * 11) / 100)
#define MIX_CHANNEL(a, b, m) (((a * m) + (b * (255 - m))) / 255)
#define SMP_GRADIENT -444
#define SMP_INV_GRADIENT -445
#define PREVIEW_BPP 3
#define PREVIEW_SIZE_X 256
#define PREVIEW_SIZE_Y 256
#define DA_WIDTH 256
#define DA_HEIGHT 25
#define GRADIENT_HEIGHT 15
#define CONTROL_HEIGHT DA_HEIGHT - GRADIENT_HEIGHT
#define LEVELS_DA_MASK (GDK_EXPOSURE_MASK | \
GDK_ENTER_NOTIFY_MASK | \
GDK_BUTTON_PRESS_MASK | \
GDK_BUTTON_RELEASE_MASK | \
GDK_BUTTON1_MOTION_MASK | \
GDK_POINTER_MOTION_HINT_MASK)
#define LOW_INPUT 0x1
#define GAMMA 0x2
#define HIGH_INPUT 0x4
#define LOW_OUTPUT 0x8
#define HIGH_OUTPUT 0x10
#define INPUT_LEVELS 0x20
#define OUTPUT_LEVELS 0x40
#define INPUT_SLIDERS 0x80
#define OUTPUT_SLIDERS 0x100
#define DRAW 0x200
#define REFRESH_DST 0x400
#define ALL 0xFFF
#define MC_GET_SAMPLE_COLORS 1
#define MC_DST_REMAP 2
#define MC_ALL (MC_GET_SAMPLE_COLORS | MC_DST_REMAP)
typedef struct
{
gint32 dst_id;
gint32 sample_id;
gint32 hold_inten; /* TRUE or FALSE */
gint32 orig_inten; /* TRUE or FALSE */
gint32 rnd_subcolors; /* TRUE or FALSE */
gint32 guess_missing; /* TRUE or FALSE */
gint32 lvl_in_min; /* 0 upto 254 */
gint32 lvl_in_max; /* 1 upto 255 */
float lvl_in_gamma; /* 0.1 upto 10.0 (1.0 == linear) */
gint32 lvl_out_min; /* 0 upto 254 */
gint32 lvl_out_max; /* 1 upto 255 */
float tol_col_err; /* 0.0% upto 100.0%
* this is uesd to findout colors of the same
* colortone, while analyzing sample colors,
* It does not make much sense for the user to adjust this
* value. (I used a param file to findout a suitable value)
*/
} t_values;
typedef struct
{
GtkWidget *dialog;
GtkWidget *sample_preview;
GtkWidget *dst_preview;
GtkWidget *sample_colortab_preview;
GtkWidget *sample_drawarea;
GtkWidget *in_lvl_gray_preview;
GtkWidget *in_lvl_drawarea;
GtkAdjustment *adj_lvl_in_min;
GtkAdjustment *adj_lvl_in_max;
GtkAdjustment *adj_lvl_in_gamma;
GtkAdjustment *adj_lvl_out_min;
GtkAdjustment *adj_lvl_out_max;
GtkWidget *orig_inten_button;
gint active_slider;
gint slider_pos[5]; /* positions for the five sliders */
gboolean enable_preview_update;
gboolean sample_show_selection;
gboolean dst_show_selection;
gboolean sample_show_color;
gboolean dst_show_color;
} t_samp_interface;
typedef struct
{
guchar color[4]; /* R,G,B,A */
gint32 sum_color; /* nr. of sourcepixels with (nearly the same) color */
void *next;
} t_samp_color_elem;
typedef struct
{
gint32 all_samples; /* number of all source pixels with this luminosity */
gint from_sample; /* TRUE: color found in sample, FALSE: interpolated color added */
t_samp_color_elem *col_ptr; /* List of sample colors at same luminosity */
} t_samp_table_elem;
typedef struct
{
GimpDrawable *drawable;
void *sel_gdrw;
GimpPixelRgn pr;
gint x1;
gint y1;
gint x2;
gint y2;
gint index_alpha; /* 0 == no alpha, 1 == GREYA, 3 == RGBA */
gint bpp;
GimpTile *tile;
gint tile_row;
gint tile_col;
gint tile_width;
gint tile_height;
gint tile_dirty;
gint shadow;
gint32 seldeltax;
gint32 seldeltay;
gint32 tile_swapcount;
} t_GDRW;
/*
* Some globals
*/
static t_samp_interface g_di; /* global dialog interface varables */
static t_values g_values = { -1, -1, 1, 1, 0, 1, 0, 255, 1.0, 0, 255, 5.5 };
static t_samp_table_elem g_lum_tab[256];
static guchar g_lvl_trans_tab[256];
static guchar g_out_trans_tab[256];
static guchar g_sample_color_tab[256 * 3];
static guchar g_dst_preview_buffer[PREVIEW_SIZE_X * PREVIEW_SIZE_Y * 4 ]; /* color copy with mask of dst in previewsize */
static gint32 g_tol_col_err;
static gint32 g_max_col_err;
static gint g_Sdebug = FALSE;
static gint g_show_progress = FALSE;
/* Declare a local function.
*/
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gint main_colorize (gint mc_flags);
static void get_filevalues (void);
static void smp_dialog (void);
static void refresh_dst_preview (GtkWidget *preview,
guchar *src_buffer);
static void update_preview (gint32 *id_ptr);
static void clear_tables (void);
static void free_colors (void);
static void levels_update (gint update);
static gint level_in_events (GtkWidget *widget,
GdkEvent *event);
static gint level_out_events (GtkWidget *widget,
GdkEvent *event);
static void calculate_level_transfers (void);
static void get_pixel (t_GDRW *gdrw,
gint32 x,
gint32 y,
guchar *pixel);
static void init_gdrw (t_GDRW *gdrw,
GimpDrawable *drawable,
gboolean dirty,
gboolean shadow);
static void end_gdrw (t_GDRW *gdrw);
static gint32 is_layer_alive (gint32 drawable_id);
static void remap_pixel (guchar *pixel,
const guchar *original,
gint bpp2);
static void guess_missing_colors (void);
static void fill_missing_colors (void);
static void smp_get_colors (GtkWidget *dialog);
static void get_gradient (gint mode);
static void clear_preview (GtkWidget *preview);
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run /* run_proc */
};
MAIN ()
static void
query (void)
{
static const GimpParamDef args[]=
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
{ GIMP_PDB_IMAGE, "image", "Input image (unused)" },
{ GIMP_PDB_DRAWABLE, "dst-drawable", "The drawable to be colorized (Type GRAY* or RGB*)" },
{ GIMP_PDB_DRAWABLE, "sample-drawable", "Sample drawable (should be of Type RGB or RGBA)" },
{ GIMP_PDB_INT32, "hold-inten", "hold brightness intensity levels (TRUE, FALSE)" },
{ GIMP_PDB_INT32, "orig-inten", "TRUE: hold brightness of original intensity levels. FALSE: Hold Intensity of input levels" },
{ GIMP_PDB_INT32, "rnd-subcolors", "TRUE: Use all subcolors of same intensity, FALSE: use only one color per intensity" },
{ GIMP_PDB_INT32, "guess-missing", "TRUE: guess samplecolors for the missing intensity values FALSE: use only colors found in the sample" },
{ GIMP_PDB_INT32, "in-low", "intensity of lowest input (0 <= in_low <= 254)" },
{ GIMP_PDB_INT32, "in-high", "intensity of highest input (1 <= in_high <= 255)" },
{ GIMP_PDB_FLOAT, "gamma", "gamma correction factor (0.1 <= gamma <= 10) where 1.0 is linear" },
{ GIMP_PDB_INT32, "out-low", "lowest sample color intensity (0 <= out_low <= 254)" },
{ GIMP_PDB_INT32, "out-high", "highest sample color intensity (1 <= out_high <= 255)" }
};
static gchar *help_string =
"This plug-in colorizes the contents of the specified (gray) layer"
" with the help of a sample (color) layer."
" It analyzes all colors in the sample layer."
" The sample colors are sorted by brightness (== intentisty) and amount"
" and stored in a sample colortable (where brightness is the index)"
" The pixels of the destination layer are remapped with the help of the"
" sample colortable. If use_subcolors is TRUE, the remapping process uses"
" all sample colors of the corresponding brightness-intensity and"
" distributes the subcolors according to their amount in the sample"
" (If the sample has 5 green, 3 yellow, and 1 red pixel of the "
" intensity value 105, the destination pixels at intensity value 105"
" are randomly painted in green, yellow and red in a relation of 5:3:1"
" If use_subcolors is FALSE only one sample color per intensity is used."
" (green will be used in this example)"
" The brightness intensity value is transformed at the remapping process"
" according to the levels: out_lo, out_hi, in_lo, in_high and gamma"
" The in_low / in_high levels specify an initial mapping of the intensity."
" The gamma value determines how intensities are interpolated between"
" the in_lo and in_high levels. A gamma value of 1.0 results in linear"
" interpolation. Higher gamma values results in more high-level intensities"
" Lower gamma values results in more low-level intensities"
" The out_low/out_high levels constrain the resulting intensity index"
" The intensity index is used to pick the corresponding color"
" in the sample colortable. If hold_inten is FALSE the picked color"
" is used 1:1 as resulting remap_color."
" If hold_inten is TRUE The brightness of the picked color is adjusted"
" back to the origial intensity value (only hue and saturation are"
" taken from the picked sample color)"
" (or to the input level, if orig_inten is set FALSE)"
" Works on both Grayscale and RGB image with/without alpha channel."
" (the image with the dst_drawable is converted to RGB if necessary)"
" The sample_drawable should be of type RGB or RGBA";
gimp_install_procedure (PLUG_IN_PROC,
N_("Colorize image using a sample image as a guide"),
help_string,
"Wolfgang Hofer",
"hof@hotbot.com",
"02/2000",
N_("_Sample Colorize..."),
"RGB*, GRAY*",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
gimp_plugin_menu_register (PLUG_IN_PROC, "/Colors/Map");
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpDrawable *dst_drawable;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
const gchar *env;
GimpRunMode run_mode;
INIT_I18N ();
env = g_getenv ("SAMPLE_COLORIZE_DEBUG");
if (env != NULL && (*env != 'n') && (*env != 'N'))
g_Sdebug = TRUE;
if (g_Sdebug)
printf ("sample colorize run\n");
g_show_progress = FALSE;
run_mode = param[0].data.d_int32;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
g_values.lvl_out_min = 0;
g_values.lvl_out_max = 255;
g_values.lvl_in_min = 0;
g_values.lvl_in_max = 255;
g_values.lvl_in_gamma = 1.0;
/* Possibly retrieve data from a previous run */
gimp_get_data (PLUG_IN_PROC, &g_values);
if (g_values.sample_id == SMP_GRADIENT ||
g_values.sample_id == SMP_INV_GRADIENT)
g_values.sample_id = -1;
/* fix value */
g_values.tol_col_err = 5.5;
/* Get the specified dst_drawable */
g_values.dst_id = param[2].data.d_drawable;
dst_drawable = gimp_drawable_get (g_values.dst_id );
clear_tables ();
/* Make sure that the dst_drawable is gray or RGB color */
if (gimp_drawable_is_rgb (dst_drawable->drawable_id) ||
gimp_drawable_is_gray (dst_drawable->drawable_id))
{
gimp_tile_cache_ntiles (TILE_CACHE_SIZE);
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
smp_dialog ();
free_colors ();
gimp_set_data (PLUG_IN_PROC, &g_values, sizeof (t_values));
gimp_displays_flush ();
break;
case GIMP_RUN_NONINTERACTIVE:
if (nparams == NUMBER_IN_ARGS)
{
g_values.sample_id = param[3].data.d_drawable;
g_values.hold_inten = param[4].data.d_int32;
g_values.orig_inten = param[5].data.d_int32;
g_values.rnd_subcolors = param[6].data.d_int32;
g_values.guess_missing = param[7].data.d_int32;
g_values.lvl_in_min = param[8].data.d_int32;
g_values.lvl_in_max = param[9].data.d_int32;
g_values.lvl_in_gamma = param[10].data.d_float;
g_values.lvl_out_min = param[11].data.d_int32;
g_values.lvl_out_max = param[12].data.d_int32;
if (main_colorize (MC_GET_SAMPLE_COLORS) >= 0)
{
main_colorize (MC_DST_REMAP);
status = GIMP_PDB_SUCCESS;
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
break;
case GIMP_RUN_WITH_LAST_VALS:
break;
}
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
values[0].data.d_status = status;
gimp_drawable_detach (dst_drawable);
}
/* ============================================================================
* callback and constraint procedures for the dialog
* ============================================================================
*/
static void
smp_response_callback (GtkWidget *widget,
gint response_id)
{
switch (response_id)
{
case RESPONSE_RESET:
g_values.lvl_in_min = 0;
g_values.lvl_in_max = 255;
g_values.lvl_in_gamma = 1.0;
g_values.lvl_out_min = 0;
g_values.lvl_out_max = 255;
levels_update (ALL);
break;
case RESPONSE_GET_COLORS:
smp_get_colors (widget);
break;
case GTK_RESPONSE_APPLY:
g_show_progress = TRUE;
if (main_colorize (MC_DST_REMAP) == 0)
{
gimp_displays_flush ();
g_show_progress = FALSE;
return;
}
gtk_dialog_set_response_sensitive (GTK_DIALOG (widget),
GTK_RESPONSE_APPLY, FALSE);
break;
default:
gtk_widget_destroy (widget);
gtk_main_quit ();
break;
}
}
static void
smp_toggle_callback (GtkWidget *widget,
gpointer data)
{
gboolean *toggle_val = (gboolean *)data;
*toggle_val = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget));
if ((data == &g_di.sample_show_selection) ||
(data == &g_di.sample_show_color))
{
update_preview (&g_values.sample_id);
return;
}
if ((data == &g_di.dst_show_selection) ||
(data == &g_di.dst_show_color))
{
update_preview (&g_values.dst_id);
return;
}
if ((data == &g_values.hold_inten) ||
(data == &g_values.orig_inten) ||
(data == &g_values.rnd_subcolors))
{
if (g_di.orig_inten_button)
gtk_widget_set_sensitive (g_di.orig_inten_button,g_values.hold_inten);
refresh_dst_preview (g_di.dst_preview, &g_dst_preview_buffer[0]);
}
if (data == &g_values.guess_missing)
{
if (g_values.guess_missing)
guess_missing_colors ();
else
fill_missing_colors ();
smp_get_colors (NULL);
}
}
static void
smp_sample_combo_callback (GtkWidget *widget)
{
gint value;
gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), &value);
g_values.sample_id = value;
if (value == SMP_GRADIENT || value == SMP_INV_GRADIENT)
{
get_gradient (value);
smp_get_colors (NULL);
if (g_di.sample_preview)
clear_preview (g_di.sample_preview);
gtk_dialog_set_response_sensitive (GTK_DIALOG (g_di.dialog),
GTK_RESPONSE_APPLY, TRUE);
gtk_dialog_set_response_sensitive (GTK_DIALOG (g_di.dialog),
RESPONSE_GET_COLORS, FALSE);
}
else
{
update_preview (&g_values.sample_id);
gtk_dialog_set_response_sensitive (GTK_DIALOG (g_di.dialog),
RESPONSE_GET_COLORS, TRUE);
}
}
static void
smp_dest_combo_callback (GtkWidget *widget)
{
gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget),
&g_values.dst_id);
update_preview (&g_values.dst_id);
gtk_dialog_set_response_sensitive (GTK_DIALOG (g_di.dialog),
RESPONSE_GET_COLORS, TRUE);
}
static gint
smp_constrain (gint32 image_id,
gint32 drawable_id,
gpointer data)
{
if (image_id < 0)
return FALSE;
/* dont accept layers from indexed images */
if (gimp_drawable_is_indexed (drawable_id))
return FALSE;
return TRUE;
}
static void
smp_adj_lvl_in_max_upd_callback (GtkAdjustment *adjustment)
{
gint32 value;
gint upd_flags;
value = CLAMP ((gtk_adjustment_get_value (adjustment)), 1, 255);
if (value != g_values.lvl_in_max)
{
g_values.lvl_in_max = value;
upd_flags = INPUT_SLIDERS | INPUT_LEVELS | DRAW | REFRESH_DST;
if (g_values.lvl_in_max < g_values.lvl_in_min)
{
g_values.lvl_in_min = g_values.lvl_in_max;
upd_flags |= LOW_INPUT;
}
levels_update (upd_flags);
}
}
static void
smp_adj_lvl_in_min_upd_callback (GtkAdjustment *adjustment)
{
double value;
gint upd_flags;
value = CLAMP ((gtk_adjustment_get_value (adjustment)), 0, 254);
if (value != g_values.lvl_in_min)
{
g_values.lvl_in_min = value;
upd_flags = INPUT_SLIDERS | INPUT_LEVELS | DRAW | REFRESH_DST;
if (g_values.lvl_in_min > g_values.lvl_in_max)
{
g_values.lvl_in_max = g_values.lvl_in_min;
upd_flags |= HIGH_INPUT;
}
levels_update (upd_flags);
}
}
static void
smp_text_gamma_upd_callback (GtkAdjustment *adjustment)
{
double value;
value = CLAMP ((gtk_adjustment_get_value (adjustment)), 0.1, 10.0);
if (value != g_values.lvl_in_gamma)
{
g_values.lvl_in_gamma = value;
levels_update (INPUT_SLIDERS | INPUT_LEVELS | DRAW | REFRESH_DST);
}
}
static void
smp_adj_lvl_out_max_upd_callback (GtkAdjustment *adjustment)
{
gint32 value;
gint upd_flags;
value = CLAMP ((gtk_adjustment_get_value (adjustment)), 1, 255);
if (value != g_values.lvl_out_max)
{
g_values.lvl_out_max = value;
upd_flags = OUTPUT_SLIDERS | OUTPUT_LEVELS | DRAW | REFRESH_DST;
if (g_values.lvl_out_max < g_values.lvl_out_min)
{
g_values.lvl_out_min = g_values.lvl_out_max;
upd_flags |= LOW_OUTPUT;
}
levels_update (upd_flags);
}
}
static void
smp_adj_lvl_out_min_upd_callback (GtkAdjustment *adjustment)
{
double value;
gint upd_flags;
value = CLAMP ((gtk_adjustment_get_value (adjustment)), 0, 254);
if (value != g_values.lvl_out_min)
{
g_values.lvl_out_min = value;
upd_flags = OUTPUT_SLIDERS | OUTPUT_LEVELS | DRAW | REFRESH_DST;
if (g_values.lvl_out_min > g_values.lvl_out_max)
{
g_values.lvl_out_max = g_values.lvl_out_min;
upd_flags |= HIGH_OUTPUT;
}
levels_update (upd_flags);
}
}
/* ============================================================================
* DIALOG helper procedures
* (workers for the updates on the preview widgets)
* ============================================================================
*/
static void
refresh_dst_preview (GtkWidget *preview,
guchar *src_buffer)
{
guchar allrowsbuf[3 * PREVIEW_SIZE_X * PREVIEW_SIZE_Y];
guchar *ptr;
guchar *src_ptr;
guchar lum;
guchar maskbyte;
gint x, y;
gint preview_bpp;
gint src_bpp;
preview_bpp = PREVIEW_BPP;
src_bpp = PREVIEW_BPP +1; /* 3 colors + 1 maskbyte */
src_ptr = src_buffer;
ptr = allrowsbuf;
for (y = 0; y < PREVIEW_SIZE_Y; y++)
{
for (x = 0; x < PREVIEW_SIZE_X; x++)
{
if ((maskbyte = src_ptr[3]) == 0)
{
ptr[0] = src_ptr[0];
ptr[1] = src_ptr[1];
ptr[2] = src_ptr[2];
}
else
{
if (g_di.dst_show_color)
{
remap_pixel (ptr, src_ptr, 3);
}
else
{
/* lum = g_out_trans_tab[g_lvl_trans_tab[LUMINOSITY_1(src_ptr)]]; */
/* get brightness from (uncolorized) original */
lum = g_lvl_trans_tab[LUMINOSITY_1 (src_ptr)];
/* get brightness from (uncolorized) original */
ptr[0] = lum;
ptr[1] = lum;
ptr[2] = lum;
}
if (maskbyte < 255)
{
ptr[0] = MIX_CHANNEL (ptr[0], src_ptr[0], maskbyte);
ptr[1] = MIX_CHANNEL (ptr[1], src_ptr[1], maskbyte);
ptr[2] = MIX_CHANNEL (ptr[2], src_ptr[2], maskbyte);
}
}
ptr += preview_bpp;
src_ptr += src_bpp;
}
}
gimp_preview_area_draw (GIMP_PREVIEW_AREA (preview),
0, 0, PREVIEW_SIZE_X, PREVIEW_SIZE_Y,
GIMP_RGB_IMAGE,
allrowsbuf,
PREVIEW_SIZE_X * 3);
}
static void
clear_preview (GtkWidget *preview)
{
gimp_preview_area_fill (GIMP_PREVIEW_AREA (preview),
0, 0, PREVIEW_SIZE_X, PREVIEW_SIZE_Y,
170, 170, 170);
}
static void
update_pv (GtkWidget *preview,
gboolean show_selection,
t_GDRW *gdrw,
guchar *dst_buffer,
gboolean is_color)
{
guchar allrowsbuf[4 * PREVIEW_SIZE_X * PREVIEW_SIZE_Y];
guchar pixel[4];
guchar *ptr;
gint x, y;
gint x2, y2;
gint ofx, ofy;
gint sel_width, sel_height;
double scale_x, scale_y;
guchar *buf_ptr;
guchar dummy[4];
guchar maskbytes[4];
gint dstep;
guchar alpha;
if (!preview)
return;
/* init gray pixel (if we are called without a sourceimage (gdwr == NULL) */
pixel[0] = pixel[1] =pixel[2] = pixel[3] = 127;
/* calculate scale factors and offsets */
if (show_selection)
{
sel_width = gdrw->x2 - gdrw->x1;
sel_height = gdrw->y2 - gdrw->y1;
if (sel_height > sel_width)
{
scale_y = (gfloat) sel_height / PREVIEW_SIZE_Y;
scale_x = scale_y;
ofx = (gdrw->x1 +
((sel_width - (PREVIEW_SIZE_X * scale_x)) / 2));
ofy = gdrw->y1;
}
else
{
scale_x = (gfloat) sel_width / PREVIEW_SIZE_X;
scale_y = scale_x;
ofx = gdrw->x1;
ofy = (gdrw->y1 +
((sel_height - (PREVIEW_SIZE_Y * scale_y)) / 2));
}
}
else
{
if (gdrw->drawable->height > gdrw->drawable->width)
{
scale_y = (gfloat) gdrw->drawable->height / PREVIEW_SIZE_Y;
scale_x = scale_y;
ofx = (gdrw->drawable->width - (PREVIEW_SIZE_X * scale_x)) / 2;
ofy = 0;
}
else
{
scale_x = (gfloat) gdrw->drawable->width / PREVIEW_SIZE_X;
scale_y = scale_x;
ofx = 0;
ofy = (gdrw->drawable->height - (PREVIEW_SIZE_Y * scale_y)) / 2;
}
}
/* check if output goes to previw widget or to dst_buffer */
if (dst_buffer)
{
buf_ptr = dst_buffer;
dstep = PREVIEW_BPP +1;
}
else
{
buf_ptr = &dummy[0];
dstep = 0;
}
/* render preview */
ptr = allrowsbuf;
for (y = 0; y < PREVIEW_SIZE_Y; y++)
{
for (x = 0; x < PREVIEW_SIZE_X; x++)
{
if (gdrw->drawable)
{
x2 = ofx + (x * scale_x);
y2 = ofy + (y * scale_y);
get_pixel (gdrw, x2, y2, &pixel[0]);
if (gdrw->sel_gdrw)
{
get_pixel (gdrw->sel_gdrw,
x2 + gdrw->seldeltax,
y2 + gdrw->seldeltay,
&maskbytes[0]);
}
else
{
maskbytes[0] = 255;
}
}
alpha = pixel[gdrw->index_alpha];
if (is_color && (gdrw->bpp > 2))
{
buf_ptr[0] = ptr[0] = pixel[0];
buf_ptr[1] = ptr[1] = pixel[1];
buf_ptr[2] = ptr[2] = pixel[2];
}
else
{
if (gdrw->bpp > 2)
*ptr = LUMINOSITY_1 (pixel);
else
*ptr = pixel[0];
*buf_ptr = *ptr;
buf_ptr[1] = ptr[1] = *ptr;
buf_ptr[2] = ptr[2] = *ptr;
}
if (gdrw->index_alpha == 0) /* has no alpha channel */
buf_ptr[3] = ptr[3] = 255;
else
buf_ptr[3] = ptr[3] = MIN (maskbytes[0], alpha);
buf_ptr += dstep; /* advance (or stay at dummy byte) */
ptr += 4;
}
}
if (dst_buffer == NULL)
{
gimp_preview_area_draw (GIMP_PREVIEW_AREA (preview),
0, 0, PREVIEW_SIZE_X, PREVIEW_SIZE_Y,
GIMP_RGBA_IMAGE,
allrowsbuf,
PREVIEW_SIZE_X * 4);
gtk_widget_queue_draw (preview);
}
}
static void
update_preview (gint32 *id_ptr)
{
GimpDrawable *drawable;
t_GDRW gdrw;
if (g_Sdebug)
printf ("UPD PREVIEWS ID:%d ENABLE_UPD:%d\n",
(int)*id_ptr, (int)g_di.enable_preview_update);
if (id_ptr == NULL || !g_di.enable_preview_update)
return;
if (is_layer_alive (*id_ptr) < 0)
{
/* clear preview on invalid drawable id
* (SMP_GRADIENT and SMP_INV_GRADIENT)
*/
if (id_ptr == &g_values.sample_id)
clear_preview (g_di.sample_preview);
if (id_ptr == &g_values.dst_id)
clear_preview (g_di.dst_preview);
return;
}
drawable = gimp_drawable_get (*id_ptr);
if (id_ptr == &g_values.sample_id)
{
init_gdrw (&gdrw, drawable, FALSE, FALSE);
update_pv (g_di.sample_preview, g_di.sample_show_selection, &gdrw,
NULL, g_di.sample_show_color);
}
else if (id_ptr == &g_values.dst_id)
{
init_gdrw (&gdrw, drawable, FALSE, FALSE);
update_pv (g_di.dst_preview, g_di.dst_show_selection, &gdrw,
&g_dst_preview_buffer[0], g_di.dst_show_color);
refresh_dst_preview (g_di.dst_preview, &g_dst_preview_buffer[0]);
}
if (drawable)
end_gdrw (&gdrw);
}
static void
levels_draw_slider (cairo_t *cr,
GdkColor *border_color,
GdkColor *fill_color,
gint xpos)
{
cairo_move_to (cr, xpos, 0);
cairo_line_to (cr, xpos - (CONTROL_HEIGHT - 1) / 2, CONTROL_HEIGHT - 1);
cairo_line_to (cr, xpos + (CONTROL_HEIGHT - 1) / 2, CONTROL_HEIGHT - 1);
cairo_line_to (cr, xpos, 0);
gdk_cairo_set_source_color (cr, fill_color);
cairo_fill_preserve (cr);
gdk_cairo_set_source_color (cr, border_color);
cairo_stroke (cr);
}
static void
smp_get_colors (GtkWidget *dialog)
{
gint i;
guchar buffer[3 * DA_WIDTH * GRADIENT_HEIGHT];
update_preview (&g_values.sample_id);
if (dialog && main_colorize (MC_GET_SAMPLE_COLORS) >= 0) /* do not colorize, just analyze sample colors */
gtk_dialog_set_response_sensitive (GTK_DIALOG (g_di.dialog),
GTK_RESPONSE_APPLY, TRUE);
for (i = 0; i < GRADIENT_HEIGHT; i++)
memcpy (buffer + i * 3 * DA_WIDTH, g_sample_color_tab, 3 * DA_WIDTH);
update_preview (&g_values.dst_id);
gimp_preview_area_draw (GIMP_PREVIEW_AREA (g_di.sample_colortab_preview),
0, 0, DA_WIDTH, GRADIENT_HEIGHT,
GIMP_RGB_IMAGE,
buffer,
DA_WIDTH * 3);
}
static void
levels_update (gint update)
{
gint i;
if (g_Sdebug)
printf ("levels_update: update reques %x\n", update);
/* Recalculate the transfer array */
calculate_level_transfers ();
if (update & REFRESH_DST)
refresh_dst_preview (g_di.dst_preview, &g_dst_preview_buffer[0]);
/* update the spinbutton entry widgets */
if (update & LOW_INPUT)
gtk_adjustment_set_value (g_di.adj_lvl_in_min,
g_values.lvl_in_min);
if (update & GAMMA)
gtk_adjustment_set_value (g_di.adj_lvl_in_gamma,
g_values.lvl_in_gamma);
if (update & HIGH_INPUT)
gtk_adjustment_set_value (g_di.adj_lvl_in_max,
g_values.lvl_in_max);
if (update & LOW_OUTPUT)
gtk_adjustment_set_value (g_di.adj_lvl_out_min,
g_values.lvl_out_min);
if (update & HIGH_OUTPUT)
gtk_adjustment_set_value (g_di.adj_lvl_out_max,
g_values.lvl_out_max);
if (update & INPUT_LEVELS)
{
guchar buffer[DA_WIDTH * GRADIENT_HEIGHT];
for (i = 0; i < GRADIENT_HEIGHT; i++)
memcpy (buffer + DA_WIDTH * i, g_lvl_trans_tab, DA_WIDTH);
gimp_preview_area_draw (GIMP_PREVIEW_AREA (g_di.in_lvl_gray_preview),
0, 0, DA_WIDTH, GRADIENT_HEIGHT,
GIMP_GRAY_IMAGE,
buffer,
DA_WIDTH);
}
if (update & INPUT_SLIDERS)
{
GtkStyle *style = gtk_widget_get_style (g_di.in_lvl_drawarea);
cairo_t *cr = gdk_cairo_create (gtk_widget_get_window (g_di.in_lvl_drawarea));
gdouble width, mid, tmp;
gdk_cairo_set_source_color (cr, &style->bg[GTK_STATE_NORMAL]);
cairo_paint (cr);
cairo_translate (cr, 0.5, 0.5);
cairo_set_line_width (cr, 1.0);
g_di.slider_pos[0] = DA_WIDTH * ((double) g_values.lvl_in_min / 255.0);
g_di.slider_pos[2] = DA_WIDTH * ((double) g_values.lvl_in_max / 255.0);
width = (double) (g_di.slider_pos[2] - g_di.slider_pos[0]) / 2.0;
mid = g_di.slider_pos[0] + width;
tmp = log10 (1.0 / g_values.lvl_in_gamma);
g_di.slider_pos[1] = (int) (mid + width * tmp + 0.5);
levels_draw_slider (cr,
&style->black,
&style->dark[GTK_STATE_NORMAL],
g_di.slider_pos[1]);
levels_draw_slider (cr,
&style->black,
&style->black,
g_di.slider_pos[0]);
levels_draw_slider (cr,
&style->black,
&style->white,
g_di.slider_pos[2]);
cairo_destroy (cr);
}
if (update & OUTPUT_SLIDERS)
{
GtkStyle *style = gtk_widget_get_style (g_di.sample_drawarea);
cairo_t *cr = gdk_cairo_create (gtk_widget_get_window (g_di.sample_drawarea));
gdk_cairo_set_source_color (cr, &style->bg[GTK_STATE_NORMAL]);
cairo_paint (cr);
cairo_translate (cr, 0.5, 0.5);
cairo_set_line_width (cr, 1.0);
g_di.slider_pos[3] = DA_WIDTH * ((double) g_values.lvl_out_min / 255.0);
g_di.slider_pos[4] = DA_WIDTH * ((double) g_values.lvl_out_max / 255.0);
levels_draw_slider (cr,
&style->black,
&style->black,
g_di.slider_pos[3]);
levels_draw_slider (cr,
&style->black,
&style->black,
g_di.slider_pos[4]);
cairo_destroy (cr);
}
}
static gboolean
level_in_events (GtkWidget *widget,
GdkEvent *event)
{
GdkEventButton *bevent;
GdkEventMotion *mevent;
gdouble width, mid, tmp;
gint x, distance;
gint i;
gint update = FALSE;
switch (event->type)
{
case GDK_EXPOSE:
if (g_Sdebug)
printf ("EVENT: GDK_EXPOSE\n");
if (widget == g_di.in_lvl_drawarea)
levels_update (INPUT_SLIDERS);
break;
case GDK_BUTTON_PRESS:
if (g_Sdebug)
printf ("EVENT: GDK_BUTTON_PRESS\n");
gtk_grab_add (widget);
bevent = (GdkEventButton *) event;
distance = G_MAXINT;
for (i = 0; i < 3; i++)
{
if (fabs (bevent->x - g_di.slider_pos[i]) < distance)
{
g_di.active_slider = i;
distance = fabs (bevent->x - g_di.slider_pos[i]);
}
}
x = bevent->x;
update = TRUE;
break;
case GDK_BUTTON_RELEASE:
if (g_Sdebug)
printf ("EVENT: GDK_BUTTON_RELEASE\n");
gtk_grab_remove (widget);
switch (g_di.active_slider)
{
case 0: /* low input */
levels_update (LOW_INPUT | GAMMA | DRAW);
break;
case 1: /* gamma */
levels_update (GAMMA);
break;
case 2: /* high input */
levels_update (HIGH_INPUT | GAMMA | DRAW);
break;
}
refresh_dst_preview (g_di.dst_preview, &g_dst_preview_buffer[0]);
break;
case GDK_MOTION_NOTIFY:
if (g_Sdebug)
printf ("EVENT: GDK_MOTION_NOTIFY\n");
mevent = (GdkEventMotion *) event;
x = mevent->x;
gdk_event_request_motions (mevent);
update = TRUE;
break;
default:
if (g_Sdebug)
printf ("EVENT: default\n");
break;
}
if (update)
{
if (g_Sdebug)
printf ("EVENT: ** update **\n");
switch (g_di.active_slider)
{
case 0: /* low input */
g_values.lvl_in_min = ((double) x / (double) DA_WIDTH) * 255.0;
g_values.lvl_in_min = CLAMP (g_values.lvl_in_min,
0, g_values.lvl_in_max);
break;
case 1: /* gamma */
width = (double) (g_di.slider_pos[2] - g_di.slider_pos[0]) / 2.0;
mid = g_di.slider_pos[0] + width;
x = CLAMP (x, g_di.slider_pos[0], g_di.slider_pos[2]);
tmp = (double) (x - mid) / width;
g_values.lvl_in_gamma = 1.0 / pow (10, tmp);
/* round the gamma value to the nearest 1/100th */
g_values.lvl_in_gamma =
floor (g_values.lvl_in_gamma * 100 + 0.5) / 100.0;
break;
case 2: /* high input */
g_values.lvl_in_max = ((double) x / (double) DA_WIDTH) * 255.0;
g_values.lvl_in_max = CLAMP (g_values.lvl_in_max,
g_values.lvl_in_min, 255);
break;
}
levels_update (INPUT_SLIDERS | INPUT_LEVELS | DRAW);
}
return FALSE;
}
static gboolean
level_out_events (GtkWidget *widget,
GdkEvent *event)
{
GdkEventButton *bevent;
GdkEventMotion *mevent;
gint x, distance;
gint i;
gint update = FALSE;
switch (event->type)
{
case GDK_EXPOSE:
if (g_Sdebug)
printf ("OUT_EVENT: GDK_EXPOSE\n");
if (widget == g_di.sample_drawarea)
levels_update (OUTPUT_SLIDERS);
break;
case GDK_BUTTON_PRESS:
if (g_Sdebug)
printf ("OUT_EVENT: GDK_BUTTON_PRESS\n");
bevent = (GdkEventButton *) event;
distance = G_MAXINT;
for (i = 3; i < 5; i++)
{
if (fabs (bevent->x - g_di.slider_pos[i]) < distance)
{
g_di.active_slider = i;
distance = fabs (bevent->x - g_di.slider_pos[i]);
}
}
x = bevent->x;
update = TRUE;
break;
case GDK_BUTTON_RELEASE:
if (g_Sdebug)
printf ("OUT_EVENT: GDK_BUTTON_RELEASE\n");
switch (g_di.active_slider)
{
case 3: /* low output */
levels_update (LOW_OUTPUT | DRAW);
break;
case 4: /* high output */
levels_update (HIGH_OUTPUT | DRAW);
break;
}
refresh_dst_preview (g_di.dst_preview, &g_dst_preview_buffer[0]);
break;
case GDK_MOTION_NOTIFY:
if (g_Sdebug)
printf ("OUT_EVENT: GDK_MOTION_NOTIFY\n");
mevent = (GdkEventMotion *) event;
x = mevent->x;
gdk_event_request_motions (mevent);
update = TRUE;
break;
default:
if (g_Sdebug)
printf ("OUT_EVENT: default\n");
break;
}
if (update)
{
if (g_Sdebug)
printf ("OUT_EVENT: ** update **\n");
switch (g_di.active_slider)
{
case 3: /* low output */
g_values.lvl_out_min = ((double) x / (double) DA_WIDTH) * 255.0;
g_values.lvl_out_min = CLAMP (g_values.lvl_out_min,
0, g_values.lvl_out_max);
break;
case 4: /* high output */
g_values.lvl_out_max = ((double) x / (double) DA_WIDTH) * 255.0;
g_values.lvl_out_max = CLAMP (g_values.lvl_out_max,
g_values.lvl_out_min, 255);
break;
}
levels_update (OUTPUT_SLIDERS | OUTPUT_LEVELS | DRAW);
}
return FALSE;
}
/* ============================================================================
* smp_dialog
* The Interactive Dialog
* ============================================================================
*/
static void
smp_dialog (void)
{
GtkWidget *dialog;
GtkWidget *hbox;
GtkWidget *vbox2;
GtkWidget *frame;
GtkWidget *table;
GtkWidget *check_button;
GtkWidget *label;
GtkWidget *combo;
GtkWidget *spinbutton;
GtkObject *data;
gint ty;
/* set flags for check buttons from mode value bits */
if (g_Sdebug)
g_print ("smp_dialog START\n");
/* init some dialog variables */
g_di.enable_preview_update = FALSE;
g_di.sample_show_selection = TRUE;
g_di.dst_show_selection = TRUE;
g_di.dst_show_color = TRUE;
g_di.sample_show_color = TRUE;
g_di.orig_inten_button = NULL;
/* Init GTK */
gimp_ui_init (PLUG_IN_BINARY, TRUE);
/* Main Dialog */
g_di.dialog = dialog =
gimp_dialog_new (_("Sample Colorize"), PLUG_IN_ROLE,
NULL, 0,
gimp_standard_help_func, PLUG_IN_PROC,
GIMP_STOCK_RESET, RESPONSE_RESET,
_("Get _Sample Colors"), RESPONSE_GET_COLORS,
GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,
GTK_STOCK_APPLY, GTK_RESPONSE_APPLY,
NULL);
gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
RESPONSE_GET_COLORS,
RESPONSE_RESET,
GTK_RESPONSE_APPLY,
GTK_RESPONSE_CLOSE,
-1);
gimp_window_set_transient (GTK_WINDOW (dialog));
g_signal_connect (dialog, "response",
G_CALLBACK (smp_response_callback),
NULL);
/* table for values */
table = gtk_table_new (7, 5, FALSE);
gtk_table_set_row_spacings (GTK_TABLE (table), 12);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_container_set_border_width (GTK_CONTAINER (table), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
table, TRUE, TRUE, 0);
ty = 0;
/* layer combo_box (Dst) */
label = gtk_label_new (_("Destination:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, ty, ty + 1,
GTK_FILL, GTK_FILL, 4, 0);
gtk_widget_show (label);
combo = gimp_layer_combo_box_new (smp_constrain, NULL);
gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo), g_values.dst_id,
G_CALLBACK (smp_dest_combo_callback),
NULL);
gtk_table_attach (GTK_TABLE (table), combo, 1, 2, ty, ty + 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (combo);
/* layer combo_box (Sample) */
label = gtk_label_new (_("Sample:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 3, 4, ty, ty + 1,
GTK_FILL, GTK_FILL, 4, 0);
gtk_widget_show (label);
combo = gimp_layer_combo_box_new (smp_constrain, NULL);
gimp_int_combo_box_prepend (GIMP_INT_COMBO_BOX (combo),
GIMP_INT_STORE_VALUE, SMP_INV_GRADIENT,
GIMP_INT_STORE_LABEL, _("From reverse gradient"),
GIMP_INT_STORE_STOCK_ID, GIMP_STOCK_GRADIENT,
-1);
gimp_int_combo_box_prepend (GIMP_INT_COMBO_BOX (combo),
GIMP_INT_STORE_VALUE, SMP_GRADIENT,
GIMP_INT_STORE_LABEL, _("From gradient"),
GIMP_INT_STORE_STOCK_ID, GIMP_STOCK_GRADIENT,
-1);
gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo), g_values.sample_id,
G_CALLBACK (smp_sample_combo_callback),
NULL);
gtk_table_attach (GTK_TABLE (table), combo, 4, 5, ty, ty + 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (combo);
ty++;
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_table_attach (GTK_TABLE (table), hbox, 0, 2, ty, ty + 1,
GTK_FILL, 0, 0, 0);
gtk_widget_show (hbox);
/* check button */
check_button = gtk_check_button_new_with_label (_("Show selection"));
gtk_box_pack_start (GTK_BOX (hbox), check_button, FALSE, FALSE, 0);
gtk_widget_show (check_button);
g_signal_connect (check_button, "toggled",
G_CALLBACK (smp_toggle_callback),
&g_di.dst_show_selection);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check_button),
g_di.dst_show_selection);
/* check button */
check_button = gtk_check_button_new_with_label (_("Show color"));
gtk_box_pack_start (GTK_BOX (hbox), check_button, FALSE, FALSE, 0);
gtk_widget_show (check_button);
g_signal_connect (check_button, "toggled",
G_CALLBACK (smp_toggle_callback),
&g_di.dst_show_color);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check_button),
g_di.dst_show_color);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_table_attach (GTK_TABLE (table), hbox, 3, 5, ty, ty + 1,
GTK_FILL, 0, 0, 0);
gtk_widget_show (hbox);
/* check button */
check_button = gtk_check_button_new_with_label (_("Show selection"));
gtk_box_pack_start (GTK_BOX (hbox), check_button, FALSE, FALSE, 0);
gtk_widget_show (check_button);
g_signal_connect (check_button, "toggled",
G_CALLBACK (smp_toggle_callback),
&g_di.sample_show_selection);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check_button),
g_di.sample_show_selection);
/* check button */
check_button = gtk_check_button_new_with_label (_("Show color"));
gtk_box_pack_start (GTK_BOX (hbox), check_button, FALSE, FALSE, 0);
gtk_widget_show (check_button);
g_signal_connect (check_button, "toggled",
G_CALLBACK (smp_toggle_callback),
&g_di.sample_show_color);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check_button),
g_di.sample_show_color);
ty++;
/* Preview (Dst) */
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_table_attach (GTK_TABLE (table),
frame, 0, 2, ty, ty + 1, 0, 0, 0, 0);
gtk_widget_show (frame);
g_di.dst_preview = gimp_preview_area_new ();
gtk_widget_set_size_request (g_di.dst_preview,
PREVIEW_SIZE_X, PREVIEW_SIZE_Y);
gtk_container_add (GTK_CONTAINER (frame), g_di.dst_preview);
gtk_widget_show (g_di.dst_preview);
/* Preview (Sample)*/
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_table_attach (GTK_TABLE (table),
frame, 3, 5, ty, ty + 1, 0, 0, 0, 0);
gtk_widget_show (frame);
g_di.sample_preview = gimp_preview_area_new ();
gtk_widget_set_size_request (g_di.sample_preview,
PREVIEW_SIZE_X, PREVIEW_SIZE_Y);
gtk_container_add (GTK_CONTAINER (frame), g_di.sample_preview);
gtk_widget_show (g_di.sample_preview);
ty++;
/* The levels graylevel prevev */
frame = gtk_frame_new (NULL);
vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_container_add (GTK_CONTAINER (frame), vbox2);
gtk_table_attach (GTK_TABLE (table),
frame, 0, 2, ty, ty + 1, 0, 0, 0, 0);
g_di.in_lvl_gray_preview = gimp_preview_area_new ();
gtk_widget_set_size_request (g_di.in_lvl_gray_preview,
DA_WIDTH, GRADIENT_HEIGHT);
gtk_widget_set_events (g_di.in_lvl_gray_preview, LEVELS_DA_MASK);
gtk_box_pack_start (GTK_BOX (vbox2), g_di.in_lvl_gray_preview, FALSE, TRUE, 0);
gtk_widget_show (g_di.in_lvl_gray_preview);
g_signal_connect (g_di.in_lvl_gray_preview, "event",
G_CALLBACK (level_in_events),
NULL);
/* The levels drawing area */
g_di.in_lvl_drawarea = gtk_drawing_area_new ();
gtk_widget_set_size_request (g_di.in_lvl_drawarea,
DA_WIDTH, CONTROL_HEIGHT);
gtk_widget_set_events (g_di.in_lvl_drawarea, LEVELS_DA_MASK);
gtk_box_pack_start (GTK_BOX (vbox2), g_di.in_lvl_drawarea, FALSE, TRUE, 0);
gtk_widget_show (g_di.in_lvl_drawarea);
g_signal_connect (g_di.in_lvl_drawarea, "event",
G_CALLBACK (level_in_events),
NULL);
gtk_widget_show (vbox2);
gtk_widget_show (frame);
/* The sample_colortable prevev */
frame = gtk_frame_new (NULL);
vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_container_add (GTK_CONTAINER (frame), vbox2);
gtk_table_attach (GTK_TABLE (table),
frame, 3, 5, ty, ty + 1, 0, 0, 0, 0);
g_di.sample_colortab_preview = gimp_preview_area_new ();
gtk_widget_set_size_request (g_di.sample_colortab_preview,
DA_WIDTH, GRADIENT_HEIGHT);
gtk_box_pack_start (GTK_BOX (vbox2), g_di.sample_colortab_preview, FALSE, TRUE, 0);
gtk_widget_show (g_di.sample_colortab_preview);
/* The levels drawing area */
g_di.sample_drawarea = gtk_drawing_area_new ();
gtk_widget_set_size_request (g_di.sample_drawarea,
DA_WIDTH, CONTROL_HEIGHT);
gtk_widget_set_events (g_di.sample_drawarea, LEVELS_DA_MASK);
gtk_box_pack_start (GTK_BOX (vbox2), g_di.sample_drawarea, FALSE, TRUE, 0);
gtk_widget_show (g_di.sample_drawarea);
g_signal_connect (g_di.sample_drawarea, "event",
G_CALLBACK (level_out_events),
NULL);
gtk_widget_show (vbox2);
gtk_widget_show (frame);
ty++;
/* Horizontal box for INPUT levels text widget */
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
gtk_table_attach (GTK_TABLE (table), hbox, 0, 2, ty, ty+1,
GTK_FILL, 0, 0, 0);
label = gtk_label_new (_("Input levels:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
/* min input spinbutton */
data = gtk_adjustment_new ((gfloat)g_values.lvl_in_min, 0.0, 254.0, 1, 10, 0);
g_di.adj_lvl_in_min = GTK_ADJUSTMENT (data);
spinbutton = gtk_spin_button_new (g_di.adj_lvl_in_min, 0.5, 0);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
g_signal_connect (g_di.adj_lvl_in_min, "value-changed",
G_CALLBACK (smp_adj_lvl_in_min_upd_callback),
&g_di);
/* input gamma spinbutton */
data = gtk_adjustment_new ((gfloat)g_values.lvl_in_gamma, 0.1, 10.0, 0.02, 0.2, 0);
g_di.adj_lvl_in_gamma = GTK_ADJUSTMENT (data);
spinbutton = gtk_spin_button_new (g_di.adj_lvl_in_gamma, 0.5, 2);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
g_signal_connect (g_di.adj_lvl_in_gamma, "value-changed",
G_CALLBACK (smp_text_gamma_upd_callback),
&g_di);
/* high input spinbutton */
data = gtk_adjustment_new ((gfloat)g_values.lvl_in_max, 1.0, 255.0, 1, 10, 0);
g_di.adj_lvl_in_max = GTK_ADJUSTMENT (data);
spinbutton = gtk_spin_button_new (g_di.adj_lvl_in_max, 0.5, 0);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
g_signal_connect (g_di.adj_lvl_in_max, "value-changed",
G_CALLBACK (smp_adj_lvl_in_max_upd_callback),
&g_di);
gtk_widget_show (hbox);
/* Horizontal box for OUTPUT levels text widget */
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
gtk_table_attach (GTK_TABLE (table), hbox, 3, 5, ty, ty+1,
GTK_FILL, 0, 0, 0);
label = gtk_label_new (_("Output levels:"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
/* min output spinbutton */
data = gtk_adjustment_new ((gfloat)g_values.lvl_out_min, 0.0, 254.0, 1, 10, 0);
g_di.adj_lvl_out_min = GTK_ADJUSTMENT (data);
spinbutton = gtk_spin_button_new (g_di.adj_lvl_out_min, 0.5, 0);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
g_signal_connect (g_di.adj_lvl_out_min, "value-changed",
G_CALLBACK (smp_adj_lvl_out_min_upd_callback),
&g_di);
/* high output spinbutton */
data = gtk_adjustment_new ((gfloat)g_values.lvl_out_max, 0.0, 255.0, 1, 10, 0);
g_di.adj_lvl_out_max = GTK_ADJUSTMENT (data);
spinbutton = gtk_spin_button_new (g_di.adj_lvl_out_max, 0.5, 0);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spinbutton), TRUE);
gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
g_signal_connect (g_di.adj_lvl_out_max, "value-changed",
G_CALLBACK (smp_adj_lvl_out_max_upd_callback),
&g_di);
gtk_widget_show (hbox);
ty++;
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_table_attach (GTK_TABLE (table), hbox, 0, 2, ty, ty+1,
GTK_FILL, 0, 0, 0);
gtk_widget_show (hbox);
/* check button */
check_button = gtk_check_button_new_with_label (_("Hold intensity"));
gtk_box_pack_start (GTK_BOX (hbox), check_button, FALSE, FALSE, 0);
gtk_widget_show (check_button);
g_signal_connect (check_button, "toggled",
G_CALLBACK (smp_toggle_callback),
&g_values.hold_inten);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check_button),
g_values.hold_inten);
/* check button */
check_button = gtk_check_button_new_with_label (_("Original intensity"));
g_di.orig_inten_button = check_button;
gtk_box_pack_start (GTK_BOX (hbox), check_button, FALSE, FALSE, 0);
gtk_widget_set_sensitive (g_di.orig_inten_button, g_values.hold_inten);
gtk_widget_show (check_button);
g_signal_connect (check_button, "toggled",
G_CALLBACK (smp_toggle_callback),
&g_values.orig_inten);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check_button),
g_values.orig_inten);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_table_attach (GTK_TABLE (table), hbox, 3, 5, ty, ty+1,
GTK_FILL, 0, 0, 0);
gtk_widget_show (hbox);
/* check button */
check_button = gtk_check_button_new_with_label (_("Use subcolors"));
gtk_box_pack_start (GTK_BOX (hbox), check_button, FALSE, FALSE, 0);
gtk_widget_show (check_button);
g_signal_connect (check_button, "toggled",
G_CALLBACK (smp_toggle_callback),
&g_values.rnd_subcolors);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check_button),
g_values.rnd_subcolors);
/* check button */
check_button = gtk_check_button_new_with_label (_("Smooth samples"));
gtk_box_pack_start (GTK_BOX (hbox), check_button, FALSE, FALSE, 0);
gtk_widget_show (check_button);
g_signal_connect (check_button, "toggled",
G_CALLBACK (smp_toggle_callback),
&g_values.guess_missing);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check_button),
g_values.guess_missing);
ty++;
gtk_widget_show (table);
gtk_widget_show (frame);
gtk_widget_show (dialog);
/* set old_id's different (to force updates of the previews) */
g_di.enable_preview_update = TRUE;
smp_get_colors (NULL);
update_preview (&g_values.dst_id);
levels_update (INPUT_SLIDERS | INPUT_LEVELS | DRAW);
gtk_main ();
}
/* -----------------------------
* DEBUG print procedures START
* -----------------------------
*/
static void
print_ppm (const gchar *ppm_name)
{
FILE *fp;
gint idx;
gint cnt;
gint r;
gint g;
gint b;
t_samp_color_elem *col_ptr;
if (ppm_name == NULL)
return;
fp = g_fopen (ppm_name, "w");
if (fp)
{
fprintf (fp, "P3\n# CREATOR: Gimp sample coloros\n256 256\n255\n");
for (idx = 0; idx < 256; idx++)
{
col_ptr = g_lum_tab[idx].col_ptr;
for (cnt = 0; cnt < 256; cnt++)
{
r = g = b = 0;
if (col_ptr)
{
if ((col_ptr->sum_color > 0) && (cnt != 20))
{
r = (gint) col_ptr->color[0];
g = (gint) col_ptr->color[1];
b = (gint) col_ptr->color[2];
}
if (cnt > 20)
col_ptr = col_ptr->next;
}
fprintf (fp, "%d %d %d\n", r, g, b);
}
}
fclose (fp);
}
}
static void
print_color_list (FILE *fp,
t_samp_color_elem *col_ptr)
{
if (fp == NULL)
return;
while (col_ptr)
{
fprintf (fp, " RGBA: %03d %03d %03d %03d sum: [%d]\n",
(gint)col_ptr->color[0],
(gint)col_ptr->color[1],
(gint)col_ptr->color[2],
(gint)col_ptr->color[3],
(gint)col_ptr->sum_color);
col_ptr = col_ptr->next;
}
}
static void
print_table (FILE *fp)
{
gint idx;
if (fp == NULL)
return;
fprintf (fp, "---------------------------\n");
fprintf (fp, "print_table\n");
fprintf (fp, "---------------------------\n");
for (idx = 0; idx < 256; idx++)
{
fprintf (fp, "LUM [%03d] pixcount:%d\n",
idx, (int)g_lum_tab[idx].all_samples);
print_color_list (fp, g_lum_tab[idx].col_ptr);
}
}
static void
print_transtable (FILE *fp)
{
gint idx;
if (fp == NULL)
return;
fprintf (fp, "---------------------------\n");
fprintf (fp, "print_transtable\n");
fprintf (fp, "---------------------------\n");
for (idx = 0; idx < 256; idx++)
{
fprintf (fp, "LVL_TRANS [%03d] in_lvl: %3d out_lvl: %3d\n",
idx, (int)g_lvl_trans_tab[idx], (int)g_out_trans_tab[idx]);
}
}
static void
print_values (FILE *fp)
{
if (fp == NULL)
return;
fprintf (fp, "sample_colorize: params\n");
fprintf (fp, "g_values.hold_inten :%d\n", (int)g_values.hold_inten);
fprintf (fp, "g_values.orig_inten :%d\n", (int)g_values.orig_inten);
fprintf (fp, "g_values.rnd_subcolors :%d\n", (int)g_values.rnd_subcolors);
fprintf (fp, "g_values.guess_missing :%d\n", (int)g_values.guess_missing);
fprintf (fp, "g_values.lvl_in_min :%d\n", (int)g_values.lvl_in_min);
fprintf (fp, "g_values.lvl_in_max :%d\n", (int)g_values.lvl_in_max);
fprintf (fp, "g_values.lvl_in_gamma :%f\n", g_values.lvl_in_gamma);
fprintf (fp, "g_values.lvl_out_min :%d\n", (int)g_values.lvl_out_min);
fprintf (fp, "g_values.lvl_out_max :%d\n", (int)g_values.lvl_out_max);
fprintf (fp, "g_values.tol_col_err :%f\n", g_values.tol_col_err);
}
/* -----------------------------
* DEBUG print procedures END
* -----------------------------
*/
/* DEBUG: read values from file */
static void
get_filevalues (void)
{
FILE *fp;
gchar buf[1000];
/*
g_values.lvl_out_min = 0;
g_values.lvl_out_max = 255;
g_values.lvl_in_min = 0;
g_values.lvl_in_max = 255;
g_values.lvl_in_gamma = 1.0;
*/
g_values.tol_col_err = 5.5;
fp = g_fopen ("sample_colorize.values", "r");
if (fp != NULL)
{
fgets (buf, 999, fp);
sscanf (buf, "%f", &g_values.tol_col_err);
fclose (fp);
}
printf ("g_values.tol_col_err :%f\n", g_values.tol_col_err);
}
static gint32
color_error (guchar ref_red, guchar ref_green, guchar ref_blue,
guchar cmp_red, guchar cmp_green, guchar cmp_blue)
{
glong ff;
glong fs;
glong cmp_h, ref_h;
/* 1. Brightness differences */
cmp_h = (3 * cmp_red + 6 * cmp_green + cmp_blue) / 10;
ref_h = (3 * ref_red + 6 * ref_green + ref_blue) / 10;
fs = abs (ref_h - cmp_h);
ff = fs * fs;
/* 2. add Red Color differences */
fs = abs (ref_red - cmp_red);
ff += (fs * fs);
/* 3. add Green Color differences */
fs = abs (ref_green - cmp_green);
ff += (fs * fs);
/* 4. add Blue Color differences */
fs = abs (ref_blue - cmp_blue);
ff += (fs * fs);
return ((gint32)(ff));
}
static void
provide_tile (t_GDRW *gdrw,
gint col,
gint row,
gint shadow)
{
guchar *ptr;
gint i;
if (col != gdrw->tile_col || row != gdrw->tile_row || !gdrw->tile)
{
if (gdrw->tile)
{
gimp_tile_unref (gdrw->tile, gdrw->tile_dirty);
}
gdrw->tile_col = col;
gdrw->tile_row = row;
gdrw->tile = gimp_drawable_get_tile (gdrw->drawable, shadow,
gdrw->tile_row, gdrw->tile_col);
gdrw->tile_dirty = FALSE;
gimp_tile_ref (gdrw->tile);
gdrw->tile_swapcount++;
return;
/* debug start */
printf ("\np_provide_tile: row: %d col: %d data:", (int)row, (int)col);
ptr = gdrw->tile->data;
for (i = 0; i < 16; i++)
{
printf (" %d", (int)(*ptr));
ptr++;
}
printf ("\n\n");
/* debug stop */
}
}
/* get pixel value
* return light gray transparent pixel if out of bounds
* (should occur in the previews only)
*/
static void
get_pixel (t_GDRW *gdrw,
gint32 x,
gint32 y,
guchar *pixel)
{
gint row, col;
gint offx, offy;
guchar *ptr;
if ((x < 0) ||
(x > gdrw->drawable->width - 1) ||
(y < 0) ||
(y > gdrw->drawable->height - 1))
{
pixel[0] = pixel[1] = pixel[2] = 200;
pixel[3] = 0;
return;
}
col = x / gdrw->tile_width;
row = y / gdrw->tile_height;
offx = x % gdrw->tile_width;
offy = y % gdrw->tile_height;
provide_tile (gdrw, col, row, gdrw->shadow);
pixel[1] = pixel[3] = 0; /* simulate full transparent alpha channel */
ptr = (gdrw->tile->data +
(((offy * gdrw->tile->ewidth) + offx) * gdrw->bpp));
memcpy (pixel, ptr, gdrw->bpp);
return;
printf ("get_pixel: x: %d y: %d bpp:%d RGBA:%d %d %d %d\n",
(int)x, (int)y, (int)gdrw->bpp,
(int)pixel[0], (int)pixel[1], (int)pixel[2], (int)pixel[3]);
}
/* clear table */
static void
clear_tables (void)
{
guint i;
for (i = 0; i < 256; i++)
{
g_lum_tab[i].col_ptr = NULL;
g_lum_tab[i].all_samples = 0;
g_lvl_trans_tab[i] = i;
g_out_trans_tab[i] = i;
g_sample_color_tab[3 * i + 0] = i;
g_sample_color_tab[3 * i + 1] = i;
g_sample_color_tab[3 * i + 2] = i;
}
}
/* free all allocated sample colors in table g_lum_tab */
static void
free_colors (void)
{
gint lum;
t_samp_color_elem *col_ptr;
t_samp_color_elem *next_ptr;
for (lum = 0; lum < 256; lum++)
{
for (col_ptr = g_lum_tab[lum].col_ptr;
col_ptr != NULL;
col_ptr = next_ptr)
{
next_ptr = (t_samp_color_elem *)col_ptr->next;
g_free (col_ptr);
}
g_lum_tab[lum].col_ptr = NULL;
g_lum_tab[lum].all_samples = 0;
}
}
/* setup lum transformer table according to input_levels, gamma and output levels
* (uses sam algorithm as GIMP Level Tool)
*/
static void
calculate_level_transfers (void)
{
double inten;
gint i;
gint in_min, in_max;
gint out_min, out_max;
if (g_values.lvl_in_max >= g_values.lvl_in_min)
{
in_max = g_values.lvl_in_max;
in_min = g_values.lvl_in_min;
}
else
{
in_max = g_values.lvl_in_min;
in_min = g_values.lvl_in_max;
}
if (g_values.lvl_out_max >= g_values.lvl_out_min)
{
out_max = g_values.lvl_out_max;
out_min = g_values.lvl_out_min;
}
else
{
out_max = g_values.lvl_out_min;
out_min = g_values.lvl_out_max;
}
/* Recalculate the levels arrays */
for (i = 0; i < 256; i++)
{
/* determine input intensity */
inten = (double) i / 255.0;
if (g_values.lvl_in_gamma != 0.0)
{
inten = pow (inten, (1.0 / g_values.lvl_in_gamma));
}
inten = (double) (inten * (in_max - in_min) + in_min);
inten = CLAMP (inten, 0.0, 255.0);
g_lvl_trans_tab[i] = (guchar) (inten + 0.5);
/* determine the output intensity */
inten = (double) i / 255.0;
inten = (double) (inten * (out_max - out_min) + out_min);
inten = CLAMP (inten, 0.0, 255.0);
g_out_trans_tab[i] = (guchar) (inten + 0.5);
}
}
/* alloc and init new col Element */
static t_samp_color_elem *
new_samp_color (const guchar *color)
{
t_samp_color_elem *col_ptr;
col_ptr = g_new0 (t_samp_color_elem, 1);
memcpy (&col_ptr->color[0], color, 4);
col_ptr->sum_color = 1;
col_ptr->next = NULL;
return col_ptr;
}
/* store color in g_lum_tab */
static void
add_color (const guchar *color)
{
gint32 lum;
t_samp_color_elem *col_ptr;
lum = LUMINOSITY_1(color);
g_lum_tab[lum].all_samples++;
g_lum_tab[lum].from_sample = TRUE;
/* check if exactly the same color is already in the list */
for (col_ptr = g_lum_tab[lum].col_ptr;
col_ptr != NULL;
col_ptr = (t_samp_color_elem *)col_ptr->next)
{
if ((color[0] == col_ptr->color[0]) &&
(color[1] == col_ptr->color[1]) &&
(color[2] == col_ptr->color[2]))
{
col_ptr->sum_color++;
return;
}
}
/* alloc and init element for the new color */
col_ptr = new_samp_color (color);
if (col_ptr != NULL)
{
/* add new color element as 1.st of the list */
col_ptr->next = g_lum_tab[lum].col_ptr;
g_lum_tab[lum].col_ptr = col_ptr;
}
}
/* sort Sublists (color) by descending sum_color in g_lum_tab
*/
static void
sort_color (gint32 lum)
{
t_samp_color_elem *col_ptr;
t_samp_color_elem *next_ptr;
t_samp_color_elem *prev_ptr;
t_samp_color_elem *sorted_col_ptr;
gint32 min;
gint32 min_next;
sorted_col_ptr = NULL;
min_next = 0;
while (g_lum_tab[lum].col_ptr != NULL)
{
min = min_next;
next_ptr = NULL;
prev_ptr = NULL;
for (col_ptr = g_lum_tab[lum].col_ptr;
col_ptr != NULL;
col_ptr = next_ptr)
{
next_ptr = col_ptr->next;
if (col_ptr->sum_color > min)
{
/* check min value for next loop */
if ((col_ptr->sum_color < min_next) || (min == min_next))
{
min_next = col_ptr->sum_color;
}
prev_ptr = col_ptr;
}
else
{
/* add element at head of sorted list */
col_ptr->next = sorted_col_ptr;
sorted_col_ptr = col_ptr;
/* remove element from list */
if (prev_ptr == NULL)
{
g_lum_tab[lum].col_ptr = next_ptr; /* remove 1.st element */
}
else
{
prev_ptr->next = next_ptr;
}
}
}
}
g_lum_tab[lum].col_ptr = sorted_col_ptr;
}
static void
cnt_same_sample_colortones (t_samp_color_elem *ref_ptr,
guchar *prev_color,
guchar *color_tone,
gint *csum)
{
gint32 col_error, ref_error;
t_samp_color_elem *col_ptr;
ref_error = 0;
if (prev_color != NULL)
{
ref_error = color_error (ref_ptr->color[0], ref_ptr->color[1], ref_ptr->color[2],
prev_color[0], prev_color[1], prev_color[2]);
}
/* collect colors that are (nearly) the same */
for (col_ptr = ref_ptr->next;
col_ptr != NULL;
col_ptr = (t_samp_color_elem *)col_ptr->next)
{
if (col_ptr->sum_color < 1)
continue;
col_error = color_error (ref_ptr->color[0], ref_ptr->color[1], ref_ptr->color[2],
col_ptr->color[0], col_ptr->color[1], col_ptr->color[2]);
if (col_error <= g_tol_col_err)
{
/* cout color of the same colortone */
*csum += col_ptr->sum_color;
/* mark the already checked color with negative sum_color value */
col_ptr->sum_color = 0 - col_ptr->sum_color;
if (prev_color != NULL)
{
col_error = color_error (col_ptr->color[0], col_ptr->color[1], col_ptr->color[2],
prev_color[0], prev_color[1], prev_color[2]);
if (col_error < ref_error)
{
/* use the color that is closest to prev_color */
memcpy (color_tone, &col_ptr->color[0], 3);
ref_error = col_error;
}
}
}
}
}
/* find the dominant colortones (out of all sample colors)
* for each available brightness intensity value.
* and store them in g_sample_color_tab
*/
static void
ideal_samples (void)
{
gint32 lum;
t_samp_color_elem *col_ptr;
guchar *color;
guchar color_tone[4];
guchar color_ideal[4];
gint csum, maxsum;
color = NULL;
for (lum = 0; lum < 256; lum++)
{
if (g_lum_tab[lum].col_ptr == NULL)
continue;
sort_color (lum);
col_ptr = g_lum_tab[lum].col_ptr;
memcpy (&color_ideal[0], &col_ptr->color[0], 3);
maxsum = 0;
/* collect colors that are (nearly) the same */
for (;
col_ptr != NULL;
col_ptr = (t_samp_color_elem *)col_ptr->next)
{
csum = 0;
if (col_ptr->sum_color > 0)
{
memcpy (&color_tone[0], &col_ptr->color[0], 3);
cnt_same_sample_colortones (col_ptr, color,
&color_tone[0], &csum);
if (csum > maxsum)
{
maxsum = csum;
memcpy (&color_ideal[0], &color_tone[0], 3);
}
}
else
col_ptr->sum_color = abs (col_ptr->sum_color);
}
/* store ideal color and keep track of the color */
color = &g_sample_color_tab[3 * lum];
memcpy (color, &color_ideal[0], 3);
}
}
static void
guess_missing_colors (void)
{
gint32 lum;
gint32 idx;
gfloat div;
guchar lo_color[4];
guchar hi_color[4];
guchar new_color[4];
lo_color[0] = 0;
lo_color[1] = 0;
lo_color[2] = 0;
lo_color[3] = 255;
hi_color[0] = 255;
hi_color[1] = 255;
hi_color[2] = 255;
hi_color[3] = 255;
new_color[0] = 0;
new_color[1] = 0;
new_color[2] = 0;
new_color[3] = 255;
for (lum = 0; lum < 256; lum++)
{
if ((g_lum_tab[lum].col_ptr == NULL) ||
(g_lum_tab[lum].from_sample == FALSE))
{
if (lum > 0)
{
for (idx = lum; idx < 256; idx++)
{
if ((g_lum_tab[idx].col_ptr != NULL) &&
g_lum_tab[idx].from_sample)
{
memcpy (&hi_color[0],
&g_sample_color_tab[3 * idx], 3);
break;
}
if (idx == 255)
{
hi_color[0] = 255;
hi_color[1] = 255;
hi_color[2] = 255;
break;
}
}
div = idx - (lum -1);
new_color[0] = lo_color[0] + ((float)(hi_color[0] - lo_color[0]) / div);
new_color[1] = lo_color[1] + ((float)(hi_color[1] - lo_color[1]) / div);
new_color[2] = lo_color[2] + ((float)(hi_color[2] - lo_color[2]) / div);
/*
* printf ("LO: %03d %03d %03d HI: %03d %03d %03d NEW: %03d %03d %03d\n",
* (int)lo_color[0], (int)lo_color[1], (int)lo_color[2],
* (int)hi_color[0], (int)hi_color[1], (int)hi_color[2],
* (int)new_color[0], (int)new_color[1], (int)new_color[2]);
*/
}
g_lum_tab[lum].col_ptr = new_samp_color (&new_color[0]);
g_lum_tab[lum].from_sample = FALSE;
memcpy (&g_sample_color_tab [3 * lum], &new_color[0], 3);
}
memcpy (&lo_color[0], &g_sample_color_tab [3 * lum], 3);
}
}
static void
fill_missing_colors (void)
{
gint32 lum;
gint32 idx;
gint32 lo_idx;
guchar lo_color[4];
guchar hi_color[4];
guchar new_color[4];
lo_color[0] = 0;
lo_color[1] = 0;
lo_color[2] = 0;
lo_color[3] = 255;
hi_color[0] = 255;
hi_color[1] = 255;
hi_color[2] = 255;
hi_color[3] = 255;
new_color[0] = 0;
new_color[1] = 0;
new_color[2] = 0;
new_color[3] = 255;
lo_idx = 0;
for (lum = 0; lum < 256; lum++)
{
if ((g_lum_tab[lum].col_ptr == NULL) ||
(g_lum_tab[lum].from_sample == FALSE))
{
if (lum > 0)
{
for (idx = lum; idx < 256; idx++)
{
if ((g_lum_tab[idx].col_ptr != NULL) &&
(g_lum_tab[idx].from_sample))
{
memcpy (&hi_color[0],
&g_sample_color_tab[3 * idx], 3);
break;
}
if (idx == 255)
{
/*
* hi_color[0] = 255;
* hi_color[1] = 255;
* hi_color[2] = 255;
*/
memcpy (&hi_color[0], &lo_color[0], 3);
break;
}
}
if ((lum > (lo_idx + ((idx - lo_idx ) / 2))) ||
(lo_idx == 0))
{
new_color[0] = hi_color[0];
new_color[1] = hi_color[1];
new_color[2] = hi_color[2];
}
else
{
new_color[0] = lo_color[0];
new_color[1] = lo_color[1];
new_color[2] = lo_color[2];
}
}
g_lum_tab[lum].col_ptr = new_samp_color (&new_color[0]);
g_lum_tab[lum].from_sample = FALSE;
memcpy (&g_sample_color_tab[3 * lum], &new_color[0], 3);
}
else
{
lo_idx = lum;
memcpy (&lo_color[0], &g_sample_color_tab[3 * lum], 3);
}
}
}
/* get 256 samples of active gradient (optional in invers order) */
static void
get_gradient (gint mode)
{
gchar *name;
gint n_f_samples;
gdouble *f_samples;
gdouble *f_samp; /* float samples */
gint lum;
free_colors ();
name = gimp_context_get_gradient ();
gimp_gradient_get_uniform_samples (name, 256 /* n_samples */,
mode == SMP_INV_GRADIENT,
&n_f_samples, &f_samples);
g_free (name);
for (lum = 0; lum < 256; lum++)
{
f_samp = &f_samples[lum * 4];
g_sample_color_tab[3 * lum + 0] = f_samp[0] * 255;
g_sample_color_tab[3 * lum + 1] = f_samp[1] * 255;
g_sample_color_tab[3 * lum + 2] = f_samp[2] * 255;
g_lum_tab[lum].col_ptr =
new_samp_color (&g_sample_color_tab[3 * lum]);
g_lum_tab[lum].from_sample = TRUE;
g_lum_tab[lum].all_samples = 1;
}
g_free (f_samples);
}
static gint32
is_layer_alive (gint32 drawable_id)
{
/* return -1 if layer has become invalid */
if (drawable_id < 0)
return -1;
if (gimp_item_get_image (drawable_id) < 0)
{
printf ("sample colorize: unknown layer_id %d (Image closed?)\n",
(int)drawable_id);
return -1;
}
return drawable_id;
}
static void
end_gdrw (t_GDRW *gdrw)
{
t_GDRW *sel_gdrw;
if (gdrw->tile)
{
gimp_tile_unref (gdrw->tile, gdrw->tile_dirty);
gdrw->tile = NULL;
}
sel_gdrw = (t_GDRW*)(gdrw->sel_gdrw);
if (sel_gdrw)
{
if (sel_gdrw->tile)
{
gimp_tile_unref (sel_gdrw->tile, sel_gdrw->tile_dirty);
sel_gdrw->tile = NULL;
}
gdrw->sel_gdrw = NULL;
}
}
static void
init_gdrw (t_GDRW *gdrw,
GimpDrawable *drawable,
gboolean dirty,
gboolean shadow)
{
gint32 image_id;
gint32 sel_channel_id;
gint32 x1, x2, y1, y2;
gint offsetx, offsety;
gint sel_offsetx, sel_offsety;
t_GDRW *sel_gdrw;
gint32 non_empty;
if (g_Sdebug)
printf ("\np_init_gdrw: drawable %p ID: %d\n",
drawable, (int)drawable->drawable_id);
gdrw->drawable = drawable;
gdrw->tile = NULL;
gdrw->tile_dirty = FALSE;
gdrw->tile_width = gimp_tile_width ();
gdrw->tile_height = gimp_tile_height ();
gdrw->shadow = shadow;
gdrw->tile_swapcount = 0;
gdrw->seldeltax = 0;
gdrw->seldeltay = 0;
/* get offsets within the image */
gimp_drawable_offsets (drawable->drawable_id, &offsetx, &offsety);
gimp_drawable_mask_bounds (drawable->drawable_id,
&gdrw->x1, &gdrw->y1, &gdrw->x2, &gdrw->y2);
gdrw->bpp = drawable->bpp;
if (gimp_drawable_has_alpha (drawable->drawable_id))
{
/* index of the alpha channelbyte {1|3} */
gdrw->index_alpha = gdrw->bpp -1;
}
else
{
gdrw->index_alpha = 0; /* there is no alpha channel */
}
image_id = gimp_item_get_image (drawable->drawable_id);
/* check and see if we have a selection mask */
sel_channel_id = gimp_image_get_selection (image_id);
if (g_Sdebug)
{
printf ("init_gdrw: image_id %d sel_channel_id: %d\n",
(int)image_id, (int)sel_channel_id);
printf ("init_gdrw: BOUNDS x1: %d y1: %d x2:%d y2: %d\n",
(int)gdrw->x1, (int)gdrw->y1, (int)gdrw->x2,(int)gdrw->y2);
printf ("init_gdrw: OFFS x: %d y: %d\n",
(int)offsetx, (int)offsety );
}
gimp_selection_bounds (image_id, &non_empty, &x1, &y1, &x2, &y2);
if (non_empty && (sel_channel_id >= 0))
{
/* selection is TRUE */
sel_gdrw = g_new0 (t_GDRW, 1);
sel_gdrw->drawable = gimp_drawable_get (sel_channel_id);
sel_gdrw->tile = NULL;
sel_gdrw->tile_dirty = FALSE;
sel_gdrw->tile_width = gimp_tile_width ();
sel_gdrw->tile_height = gimp_tile_height ();
sel_gdrw->shadow = shadow;
sel_gdrw->tile_swapcount = 0;
sel_gdrw->x1 = x1;
sel_gdrw->y1 = y1;
sel_gdrw->x2 = x2;
sel_gdrw->y2 = y2;
sel_gdrw->seldeltax = 0;
sel_gdrw->seldeltay = 0;
sel_gdrw->bpp = sel_gdrw->drawable->bpp; /* should be always 1 */
sel_gdrw->index_alpha = 0; /* there is no alpha channel */
sel_gdrw->sel_gdrw = NULL;
/* offset delta between drawable and selection
* (selection always has image size and should always have offsets of 0 )
*/
gimp_drawable_offsets (sel_channel_id, &sel_offsetx, &sel_offsety);
gdrw->seldeltax = offsetx - sel_offsetx;
gdrw->seldeltay = offsety - sel_offsety;
gdrw->sel_gdrw = (t_GDRW *) sel_gdrw;
if (g_Sdebug)
{
printf ("init_gdrw: SEL_BOUNDS x1: %d y1: %d x2:%d y2: %d\n",
(int)sel_gdrw->x1, (int)sel_gdrw->y1,
(int)sel_gdrw->x2, (int)sel_gdrw->y2);
printf ("init_gdrw: SEL_OFFS x: %d y: %d\n",
(int)sel_offsetx, (int)sel_offsety );
printf ("init_gdrw: SEL_DELTA x: %d y: %d\n",
(int)gdrw->seldeltax, (int)gdrw->seldeltay );
}
}
else
gdrw->sel_gdrw = NULL; /* selection is FALSE */
}
/* analyze the colors in the sample_drawable */
static int
sample_analyze (t_GDRW *sample_gdrw)
{
gint32 sample_pixels;
gint32 row, col;
gint32 first_row, first_col, last_row, last_col;
gint32 x, y;
gint32 x2, y2;
float progress_step;
float progress_max;
float progress;
guchar color[4];
FILE *prot_fp;
sample_pixels = 0;
/* init progress */
progress_max = (sample_gdrw->x2 - sample_gdrw->x1);
progress_step = 1.0 / progress_max;
progress = 0.0;
if (g_show_progress)
gimp_progress_init (_("Sample analyze"));
prot_fp = NULL;
if (g_Sdebug)
prot_fp = g_fopen ("sample_colors.dump", "w");
print_values (prot_fp);
/* ------------------------------------------------
* foreach pixel in the SAMPLE_drawable:
* calculate brightness intensity LUM
* ------------------------------------------------
* the inner loops (x/y) are designed to process
* all pixels of one tile in the sample drawable, the outer loops (row/col) do step
* to the next tiles. (this was done to reduce tile swapping)
*/
first_row = sample_gdrw->y1 / sample_gdrw->tile_height;
last_row = (sample_gdrw->y2 / sample_gdrw->tile_height);
first_col = sample_gdrw->x1 / sample_gdrw->tile_width;
last_col = (sample_gdrw->x2 / sample_gdrw->tile_width);
for (row = first_row; row <= last_row; row++)
{
for (col = first_col; col <= last_col; col++)
{
if (col == first_col)
x = sample_gdrw->x1;
else
x = col * sample_gdrw->tile_width;
if (col == last_col)
x2 = sample_gdrw->x2;
else
x2 = (col +1) * sample_gdrw->tile_width;
for ( ; x < x2; x++)
{
if (row == first_row)
y = sample_gdrw->y1;
else
y = row * sample_gdrw->tile_height;
if (row == last_row)
y2 = sample_gdrw->y2;
else
y2 = (row +1) * sample_gdrw->tile_height ;
/* printf ("X: %4d Y:%4d Y2:%4d\n", (int)x, (int)y, (int)y2); */
for ( ; y < y2; y++)
{
/* check if the pixel is in the selection */
if (sample_gdrw->sel_gdrw)
{
get_pixel (sample_gdrw->sel_gdrw,
(x + sample_gdrw->seldeltax),
(y + sample_gdrw->seldeltay),
&color[0]);
if (color[0] == 0)
continue;
}
get_pixel (sample_gdrw, x, y, &color[0]);
/* if this is a visible (non-transparent) pixel */
if ((sample_gdrw->index_alpha < 1) || (color[sample_gdrw->index_alpha] != 0))
{
/* store color in the sublists of g_lum_tab */
add_color (&color[0]);
sample_pixels++;
}
}
if (g_show_progress)
gimp_progress_update (progress += progress_step);
}
}
}
if (g_show_progress)
gimp_progress_update (1.0);
if (g_Sdebug)
printf ("ROWS: %d - %d COLS: %d - %d\n",
(int)first_row, (int)last_row,
(int)first_col, (int)last_col);
print_table (prot_fp);
if (g_Sdebug)
print_ppm ("sample_color_all.ppm");
/* findout ideal sample colors for each brightness intensity (lum)
* and set g_sample_color_tab to the ideal colors.
*/
ideal_samples ();
calculate_level_transfers ();
if (g_values.guess_missing)
guess_missing_colors ();
else
fill_missing_colors ();
print_table (prot_fp);
if (g_Sdebug)
print_ppm ("sample_color_2.ppm");
print_transtable (prot_fp);
if (prot_fp)
fclose (prot_fp);
/* check if there was at least one visible pixel */
if (sample_pixels == 0)
{
printf ("Error: Source sample has no visible Pixel\n");
return -1;
}
return 0;
}
static void
rnd_remap (gint32 lum,
guchar *mapped_color)
{
t_samp_color_elem *col_ptr;
gint rnd;
gint ct;
gint idx;
if (g_lum_tab[lum].all_samples > 1)
{
rnd = g_random_int_range (0, g_lum_tab[lum].all_samples);
ct = 0;
idx = 0;
for (col_ptr = g_lum_tab[lum].col_ptr;
col_ptr != NULL;
col_ptr = (t_samp_color_elem *)col_ptr->next)
{
ct += col_ptr->sum_color;
if (rnd < ct)
{
/* printf ("RND_remap: rnd: %d all:%d ct:%d idx:%d\n",
* rnd, (int)g_lum_tab[lum].all_samples, ct, idx);
*/
memcpy (mapped_color, &col_ptr->color[0], 3);
return;
}
idx++;
}
}
memcpy (mapped_color, &g_sample_color_tab[lum + lum + lum], 3);
}
static void
remap_pixel (guchar *pixel,
const guchar *original,
gint bpp2)
{
guchar mapped_color[4];
gint lum;
double orig_lum, mapped_lum;
double grn, red, blu;
double mg, mr, mb;
double dg, dr, db;
double dlum;
/* get brightness from (uncolorized) original */
lum = g_out_trans_tab[g_lvl_trans_tab[LUMINOSITY_1 (original)]];
if (g_values.rnd_subcolors)
rnd_remap (lum, mapped_color);
else
memcpy (mapped_color, &g_sample_color_tab[3 * lum], 3);
if (g_values.hold_inten)
{
if (g_values.orig_inten)
orig_lum = LUMINOSITY_0(original);
else
orig_lum = 100.0 * g_lvl_trans_tab[LUMINOSITY_1 (original)];
mapped_lum = LUMINOSITY_0 (mapped_color);
if (mapped_lum == 0)
{
/* convert black to greylevel with desired brightness value */
mapped_color[0] = orig_lum / 100.0;
mapped_color[1] = mapped_color[0];
mapped_color[2] = mapped_color[0];
}
else
{
/* Calculate theoretical RGB to reach given intensity LUM
* value (orig_lum)
*/
mr = mapped_color[0];
mg = mapped_color[1];
mb = mapped_color[2];
if (mr > 0.0)
{
red =
orig_lum / (30 + (59 * mg / mr) + (11 * mb / mr));
grn = mg * red / mr;
blu = mb * red / mr;
}
else if (mg > 0.0)
{
grn =
orig_lum / ((30 * mr / mg) + 59 + (11 * mb / mg));
red = mr * grn / mg;
blu = mb * grn / mg;
}
else
{
blu =
orig_lum / ((30 * mr / mb) + (59 * mg / mb) + 11);
grn = mg * blu / mb;
red = mr * blu / mb;
}
/* on overflow: Calculate real RGB values
* (this may change the hue and saturation,
* more and more into white)
*/
if (red > 255)
{
if ((blu < 255) && (grn < 255))
{
/* overflow in the red channel (compensate with green and blue) */
dlum = (red - 255.0) * 30.0;
if (mg > 0)
{
dg = dlum / (59.0 + (11.0 * mb / mg));
db = dg * mb / mg;
}
else if (mb > 0)
{
db = dlum / (11.0 + (59.0 * mg / mb));
dg = db * mg / mb;
}
else
{
db = dlum / (11.0 + 59.0);
dg = dlum / (59.0 + 11.0);
}
grn += dg;
blu += db;
}
red = 255.0;
if (grn > 255)
{
grn = 255.0;
blu = (orig_lum - 22695) / 11; /* 22695 = (255 * 30) + (255 * 59) */
}
if (blu > 255)
{
blu = 255.0;
grn = (orig_lum - 10455) / 59; /* 10455 = (255 * 30) + (255 * 11) */
}
}
else if (grn > 255)
{
if ((blu < 255) && (red < 255))
{
/* overflow in the green channel (compensate with red and blue) */
dlum = (grn - 255.0) * 59.0;
if (mr > 0)
{
dr = dlum / (30.0 + (11.0 * mb / mr));
db = dr * mb / mr;
}
else if (mb > 0)
{
db = dlum / (11.0 + (30.0 * mr / mb));
dr = db * mr / mb;
}
else
{
db = dlum / (11.0 + 30.0);
dr = dlum / (30.0 + 11.0);
}
red += dr;
blu += db;
}
grn = 255.0;
if (red > 255)
{
red = 255.0;
blu = (orig_lum - 22695) / 11; /* 22695 = (255*59) + (255*30) */
}
if (blu > 255)
{
blu = 255.0;
red = (orig_lum - 17850) / 30; /* 17850 = (255*59) + (255*11) */
}
}
else if (blu > 255)
{
if ((red < 255) && (grn < 255))
{
/* overflow in the blue channel (compensate with green and red) */
dlum = (blu - 255.0) * 11.0;
if (mg > 0)
{
dg = dlum / (59.0 + (30.0 * mr / mg));
dr = dg * mr / mg;
}
else if (mr > 0)
{
dr = dlum / (30.0 + (59.0 * mg / mr));
dg = dr * mg / mr;
}
else
{
dr = dlum / (30.0 + 59.0);
dg = dlum / (59.0 + 30.0);
}
grn += dg;
red += dr;
}
blu = 255.0;
if (grn > 255)
{
grn = 255.0;
red = (orig_lum - 17850) / 30; /* 17850 = (255*11) + (255*59) */
}
if (red > 255)
{
red = 255.0;
grn = (orig_lum - 10455) / 59; /* 10455 = (255*11) + (255*30) */
}
}
mapped_color[0] = CLAMP0255 (red + 0.5);
mapped_color[1] = CLAMP0255 (grn + 0.5);
mapped_color[2] = CLAMP0255 (blu + 0.5);
}
}
/* set colorized pixel in shadow pr */
memcpy (pixel, &mapped_color[0], bpp2);
}
static void
colorize_func (const guchar *src,
guchar *dest,
gint bpp,
gpointer data)
{
gboolean has_alpha = GPOINTER_TO_INT (data);
if (has_alpha)
{
bpp--;
dest[bpp] = src[bpp];
}
remap_pixel (dest, src, bpp);
}
static void
colorize_drawable (gint32 drawable_id)
{
GimpDrawable *drawable;
gboolean has_alpha;
drawable = gimp_drawable_get (drawable_id);
has_alpha = gimp_drawable_has_alpha (drawable->drawable_id);
if (g_show_progress)
gimp_progress_init (_("Remap colorized"));
gimp_rgn_iterate2 (drawable, 0 /* unused */, colorize_func,
GINT_TO_POINTER (has_alpha));
if (g_show_progress)
gimp_progress_update (0.0);
}
/* colorize dst_drawable like sample_drawable */
static int
main_colorize (gint mc_flags)
{
GimpDrawable *dst_drawable;
GimpDrawable *sample_drawable;
t_GDRW sample_gdrw;
gint32 max;
gint32 id;
gint rc;
if (g_Sdebug)
get_filevalues (); /* for debugging: read values from file */
sample_drawable = NULL;
dst_drawable = NULL;
/* calculate value of tolerable color error */
max = color_error (0,0, 0, 255, 255, 255); /* 260100 */
g_tol_col_err = (((float)max * (g_values.tol_col_err * g_values.tol_col_err)) / (100.0 *100.0));
g_max_col_err = max;
rc = 0;
if (mc_flags & MC_GET_SAMPLE_COLORS)
{
id = g_values.sample_id;
if ((id == SMP_GRADIENT) || (id == SMP_INV_GRADIENT))
get_gradient (id);
else
{
if (is_layer_alive (id) < 0)
return -1;
sample_drawable = gimp_drawable_get (id);
init_gdrw (&sample_gdrw, sample_drawable, FALSE, FALSE);
free_colors ();
rc = sample_analyze (&sample_gdrw);
}
}
if ((mc_flags & MC_DST_REMAP) && (rc == 0))
{
if (is_layer_alive (g_values.dst_id) < 0)
return -1;
dst_drawable = gimp_drawable_get (g_values.dst_id);
if (gimp_drawable_is_gray (g_values.dst_id) &&
(mc_flags & MC_DST_REMAP))
gimp_image_convert_rgb (gimp_item_get_image (g_values.dst_id));
colorize_drawable (dst_drawable->drawable_id);
}
if (sample_drawable)
end_gdrw (&sample_gdrw);
return rc;
}