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PIKApp/plug-ins/common/sample-colorize.c

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/* sample_colorize.c
* A PIKA Plug-In by Wolfgang Hofer
*/
/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* 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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <glib/gstdio.h>
#include <libpika/pika.h>
#include <libpika/pikaui.h>
#include "libpika/stdplugins-intl.h"
#define PLUG_IN_PROC "plug-in-sample-colorize"
#define PLUG_IN_BINARY "sample-colorize"
#define PLUG_IN_ROLE "pika-sample-colorize"
#define NUMBER_IN_ARGS 13
#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
{
PikaDrawable *dst;
gint32 sample_id;
PikaDrawable *sample;
gint32 guess_missing; /* TRUE or FALSE */
gint32 lvl_in_min; /* 0 up to 254 */
gint32 lvl_in_max; /* 1 up to 255 */
float lvl_in_gamma; /* 0.1 up to 10.0 (1.0 == linear) */
gint32 lvl_out_min; /* 0 up to 254 */
gint32 lvl_out_max; /* 1 up to 255 */
float tol_col_err; /* 0.0% up to 100.0%
* this is used to find out 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 find out a suitable value)
*/
} t_values;
typedef struct
{
PikaProcedureConfig *config;
GtkWidget *dialog;
GtkWidget *sample_preview;
GtkWidget *dst_preview;
GtkWidget *sample_colortab_preview;
GtkWidget *sample_drawarea;
GtkWidget *in_lvl_gray_preview;
GtkWidget *in_lvl_drawarea;
GtkWidget *sample_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
{
PikaDrawable *drawable;
GeglBuffer *buffer;
const Babl *format;
gint width;
gint height;
void *sel_gdrw;
gint x1;
gint y1;
gint x2;
gint y2;
gint index_alpha; /* 0 == no alpha, 1 == GREYA, 3 == RGBA */
gint bpp;
gint tile_width;
gint tile_height;
gint shadow;
gint32 seldeltax;
gint32 seldeltay;
} t_GDRW;
typedef struct _Colorize Colorize;
typedef struct _ColorizeClass ColorizeClass;
struct _Colorize
{
PikaPlugIn parent_instance;
};
struct _ColorizeClass
{
PikaPlugInClass parent_class;
};
#define COLORIZE_TYPE (colorize_get_type ())
#define COLORIZE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), COLORIZE_TYPE, Colorize))
GType colorize_get_type (void) G_GNUC_CONST;
static GList * colorize_query_procedures (PikaPlugIn *plug_in);
static PikaProcedure * colorize_create_procedure (PikaPlugIn *plug_in,
const gchar *name);
static PikaValueArray * colorize_run (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
PikaProcedureConfig *config,
gpointer run_data);
static gint main_colorize (gint mc_flags,
PikaProcedureConfig *config);
static void get_filevalues (void);
static gboolean smp_dialog (PikaProcedure *procedure,
PikaProcedureConfig *config);
static void refresh_dst_preview (GtkWidget *preview,
guchar *src_buffer);
static void update_preview (PikaDrawable *drawable);
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_in_draw (GtkWidget *widget,
cairo_t *cr);
static gint level_out_events (GtkWidget *widget,
GdkEvent *event);
static gint level_out_draw (GtkWidget *widget,
cairo_t *cr);
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,
PikaDrawable *drawable,
gboolean shadow);
static void end_gdrw (t_GDRW *gdrw);
static void remap_pixel (guchar *pixel,
const guchar *original,
gint bpp2,
PikaProcedureConfig
*config);
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);
G_DEFINE_TYPE (Colorize, colorize, PIKA_TYPE_PLUG_IN)
PIKA_MAIN (COLORIZE_TYPE)
DEFINE_STD_SET_I18N
static t_samp_interface g_di; /* global dialog interface variables */
static t_values g_values = { NULL, -1, NULL, 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;
static void
colorize_class_init (ColorizeClass *klass)
{
PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = colorize_query_procedures;
plug_in_class->create_procedure = colorize_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
colorize_init (Colorize *colorize)
{
}
static GList *
colorize_query_procedures (PikaPlugIn *plug_in)
{
return g_list_append (NULL, g_strdup (PLUG_IN_PROC));
}
static PikaProcedure *
colorize_create_procedure (PikaPlugIn *plug_in,
const gchar *name)
{
PikaProcedure *procedure = NULL;
if (! strcmp (name, PLUG_IN_PROC))
{
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 original 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";
procedure = pika_image_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
colorize_run, NULL, NULL);
pika_procedure_set_image_types (procedure, "RGB*, GRAY*");
pika_procedure_set_sensitivity_mask (procedure,
PIKA_PROCEDURE_SENSITIVE_DRAWABLE);
pika_procedure_set_menu_label (procedure, _("_Sample Colorize..."));
pika_procedure_add_menu_path (procedure, "<Image>/Colors/Map");
pika_procedure_set_documentation (procedure,
_("Colorize image using a sample "
"image as a guide"),
_(help_string),
name);
pika_procedure_set_attribution (procedure,
"Wolfgang Hofer",
"hof@hotbot.com",
"02/2000");
PIKA_PROC_ARG_DRAWABLE (procedure, "sample-drawable",
_("Sample drawable"),
_("Sample drawable (should be of Type RGB or RGBA)"),
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "hold-inten",
_("Hold _intensity"),
_("Hold brightness intensity levels"),
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "orig-inten",
_("Original i_ntensity"),
_("TRUE: hold brightness of original intensity "
"levels, "
"FALSE: Hold Intensity of input levels"),
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "rnd-subcolors",
_("Us_e subcolors"),
_("TRUE: Use all subcolors of same intensity, "
"FALSE: Use only one color per intensity"),
FALSE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_BOOLEAN (procedure, "guess-missing",
_("Smooth sam_ples"),
_("TRUE: guess samplecolors for the missing "
"intensity values, "
"FALSE: use only colors found in the sample"),
TRUE,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "in-low",
_("_Low"),
_("Intensity of lowest input"),
0, 254, 0,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "in-high",
_("_High"),
_("Intensity of highest input"),
1, 255, 255,
G_PARAM_READWRITE);
PIKA_PROC_ARG_DOUBLE (procedure, "gamma",
_("Ga_mma"),
_("Gamma adjustment factor, 1.0 is linear"),
0.1, 10.0, 1.0,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "out-low",
_("Lo_w"),
_("Lowest sample color intensity"),
0, 254, 0,
G_PARAM_READWRITE);
PIKA_PROC_ARG_INT (procedure, "out-high",
_("Hi_gh"),
_("Highest sample color intensity"),
1, 255, 255,
G_PARAM_READWRITE);
}
return procedure;
}
static PikaValueArray *
colorize_run (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
PikaProcedureConfig *config,
gpointer run_data)
{
const gchar *env;
PikaDrawable *drawable;
gegl_init (NULL, NULL);
if (n_drawables != 1)
{
GError *error = NULL;
g_set_error (&error, PIKA_PLUG_IN_ERROR, 0,
_("Procedure '%s' only works with one drawable."),
PLUG_IN_PROC);
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CALLING_ERROR,
error);
}
else
{
drawable = drawables[0];
}
env = g_getenv ("SAMPLE_COLORIZE_DEBUG");
if (env != NULL && (*env != 'n') && (*env != 'N'))
g_Sdebug = TRUE;
if (g_Sdebug)
g_printf ("sample colorize run\n");
g_show_progress = FALSE;
g_di.config = config;
g_object_get (config,
"sample-drawable", &g_values.sample,
"guess_missing", &g_values.guess_missing,
"in-low", &g_values.lvl_in_min,
"in-high", &g_values.lvl_in_max,
"gamma", &g_values.lvl_in_gamma,
"out-low", &g_values.lvl_out_min,
"out-high", &g_values.lvl_out_max,
NULL);
g_values.sample_id = -1;
/* fix value */
g_values.tol_col_err = 5.5;
/* Get the specified dst_drawable */
g_values.dst = drawable;
clear_tables ();
/* Make sure that the drawable is gray or RGB color */
if (pika_drawable_is_rgb (drawable) ||
pika_drawable_is_gray (drawable))
{
switch (run_mode)
{
case PIKA_RUN_INTERACTIVE:
if (! smp_dialog (procedure, config))
{
return pika_procedure_new_return_values (procedure,
PIKA_PDB_CANCEL,
NULL);
}
g_show_progress = TRUE;
if (main_colorize (MC_DST_REMAP, config) == 0)
{
pika_displays_flush ();
g_show_progress = FALSE;
}
free_colors ();
pika_displays_flush ();
break;
case PIKA_RUN_NONINTERACTIVE:
if (g_values.sample)
g_values.sample_id = pika_item_get_id (PIKA_ITEM (g_values.sample));
if (main_colorize (MC_GET_SAMPLE_COLORS, config) >= 0)
{
main_colorize (MC_DST_REMAP, config);
}
else
{
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
NULL);
}
break;
case PIKA_RUN_WITH_LAST_VALS:
break;
}
}
else
{
return pika_procedure_new_return_values (procedure,
PIKA_PDB_EXECUTION_ERROR,
NULL);
}
return pika_procedure_new_return_values (procedure, PIKA_PDB_SUCCESS, NULL);
}
/* ============================================================================
* callback and constraint procedures for the dialog
* ============================================================================
*/
static void
smp_toggle_callback (GtkWidget *widget,
gpointer data)
{
gboolean hold_inten;
gboolean orig_inten;
gboolean rnd_subcolors;
gboolean guess_missing;
g_object_get (g_di.config,
"hold-inten", &hold_inten,
"orig-inten", &orig_inten,
"rnd_subcolors", &rnd_subcolors,
"guess_missing", &guess_missing,
NULL);
if ((data == &g_di.sample_show_selection) ||
(data == &g_di.sample_show_color))
{
update_preview (pika_drawable_get_by_id (g_values.sample_id));
return;
}
if ((data == &g_di.dst_show_selection) ||
(data == &g_di.dst_show_color))
{
update_preview (g_values.dst);
return;
}
if (hold_inten || orig_inten || rnd_subcolors)
{
pika_procedure_dialog_set_sensitive (PIKA_PROCEDURE_DIALOG (g_di.dialog),
"orig-inten", hold_inten, NULL,
NULL, FALSE);
refresh_dst_preview (g_di.dst_preview, &g_dst_preview_buffer[0]);
}
if (guess_missing)
guess_missing_colors ();
else
fill_missing_colors ();
smp_get_colors (NULL);
}
static void
smp_sample_combo_callback (GtkWidget *widget)
{
gint value;
pika_int_combo_box_get_active (PIKA_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);
if (g_di.sample_button)
gtk_widget_set_sensitive (g_di.sample_button, FALSE);
}
else
{
update_preview (pika_drawable_get_by_id (g_values.sample_id));
if (g_di.sample_button)
gtk_widget_set_sensitive (g_di.sample_button, TRUE);
}
}
static void
smp_dest_combo_callback (GtkWidget *widget)
{
gint id;
pika_int_combo_box_get_active (PIKA_INT_COMBO_BOX (widget), &id);
g_values.dst = pika_drawable_get_by_id (id);
update_preview (g_values.dst);
if (g_di.sample_button)
gtk_widget_set_sensitive (g_di.sample_button, TRUE);
}
static gint
smp_constrain (PikaImage *image,
PikaItem *item,
gpointer data)
{
/* don't accept layers from indexed images */
if (pika_drawable_is_indexed (PIKA_DRAWABLE (item)))
return FALSE;
return TRUE;
}
static void
smp_adj_lvl_in_max_upd_callback (GObject *config,
const GParamSpec *pspec,
gpointer *data)
{
gint32 value;
gint upd_flags;
g_object_get (config,
"in-high", &value,
NULL);
value = CLAMP (value, 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 (GObject *config,
const GParamSpec *pspec,
gpointer *data)
{
gint32 value;
gint upd_flags;
g_object_get (config,
"in-low", &value,
NULL);
value = CLAMP (value, 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 (GObject *config,
const GParamSpec *pspec,
gpointer *data)
{
double value;
g_object_get (config,
"gamma", &value,
NULL);
value = CLAMP (value, 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 (GObject *config,
const GParamSpec *pspec,
gpointer *data)
{
gint32 value;
gint upd_flags;
g_object_get (config,
"out-high", &value,
NULL);
value = CLAMP (value, 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 (GObject *config,
const GParamSpec *pspec,
gpointer *data)
{
gint32 value;
gint upd_flags;
g_object_get (config,
"out-low", &value,
NULL);
value = CLAMP (value, 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, g_di.config);
}
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;
}
}
pika_preview_area_draw (PIKA_PREVIEW_AREA (preview),
0, 0, PREVIEW_SIZE_X, PREVIEW_SIZE_Y,
PIKA_RGB_IMAGE,
allrowsbuf,
PREVIEW_SIZE_X * 3);
}
static void
clear_preview (GtkWidget *preview)
{
pika_preview_area_fill (PIKA_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->height > gdrw->width)
{
scale_y = (gfloat) gdrw->height / PREVIEW_SIZE_Y;
scale_x = scale_y;
ofx = (gdrw->width - (PREVIEW_SIZE_X * scale_x)) / 2;
ofy = 0;
}
else
{
scale_x = (gfloat) gdrw->width / PREVIEW_SIZE_X;
scale_y = scale_x;
ofx = 0;
ofy = (gdrw->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)
{
pika_preview_area_draw (PIKA_PREVIEW_AREA (preview),
0, 0, PREVIEW_SIZE_X, PREVIEW_SIZE_Y,
PIKA_RGBA_IMAGE,
allrowsbuf,
PREVIEW_SIZE_X * 4);
gtk_widget_queue_draw (preview);
}
}
static void
update_preview (PikaDrawable *drawable)
{
t_GDRW gdrw;
gboolean is_drawable = FALSE;
if (! drawable || !g_di.enable_preview_update)
return;
if (pika_item_get_id (PIKA_ITEM (drawable)) == g_values.sample_id)
{
is_drawable = TRUE;
init_gdrw (&gdrw, drawable, FALSE);
update_pv (g_di.sample_preview, g_di.sample_show_selection, &gdrw,
NULL, g_di.sample_show_color);
}
else if (pika_item_get_id (PIKA_ITEM (drawable)) ==
pika_item_get_id (PIKA_ITEM (g_values.dst)))
{
is_drawable = TRUE;
init_gdrw (&gdrw, drawable, 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 (is_drawable)
end_gdrw (&gdrw);
}
static void
levels_draw_slider (cairo_t *cr,
GdkRGBA *border_color,
GdkRGBA *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_rgba (cr, fill_color);
cairo_fill_preserve (cr);
gdk_cairo_set_source_rgba (cr, border_color);
cairo_stroke (cr);
}
static void
smp_get_colors (GtkWidget *dialog)
{
gint i;
guchar buffer[3 * DA_WIDTH * GRADIENT_HEIGHT];
update_preview (pika_drawable_get_by_id (g_values.sample_id));
/* do not colorize, just analyze sample colors */
if (dialog)
main_colorize (MC_GET_SAMPLE_COLORS, g_di.config);
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);
pika_preview_area_draw (PIKA_PREVIEW_AREA (g_di.sample_colortab_preview),
0, 0, DA_WIDTH, GRADIENT_HEIGHT,
PIKA_RGB_IMAGE,
buffer,
DA_WIDTH * 3);
}
static void
levels_update (gint update)
{
gint i;
if (g_Sdebug)
g_printf ("levels_update: update request %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)
g_object_set (g_di.config,
"in-low", g_values.lvl_in_min,
NULL);
if (update & GAMMA)
g_object_set (g_di.config,
"gamma", g_values.lvl_in_gamma,
NULL);
if (update & HIGH_INPUT)
g_object_set (g_di.config,
"in-high", g_values.lvl_in_max,
NULL);
if (update & LOW_OUTPUT)
g_object_set (g_di.config,
"out-low", g_values.lvl_out_min,
NULL);
if (update & HIGH_OUTPUT)
g_object_set (g_di.config,
"out-high", g_values.lvl_out_max,
NULL);
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);
pika_preview_area_draw (PIKA_PREVIEW_AREA (g_di.in_lvl_gray_preview),
0, 0, DA_WIDTH, GRADIENT_HEIGHT,
PIKA_GRAY_IMAGE,
buffer,
DA_WIDTH);
}
if (update & INPUT_SLIDERS)
gtk_widget_queue_draw (g_di.in_lvl_drawarea);
if (update & OUTPUT_SLIDERS)
gtk_widget_queue_draw (g_di.sample_drawarea);
}
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_BUTTON_PRESS:
if (g_Sdebug)
g_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)
g_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)
g_printf ("EVENT: GDK_MOTION_NOTIFY\n");
mevent = (GdkEventMotion *) event;
x = mevent->x;
gdk_event_request_motions (mevent);
update = TRUE;
break;
default:
if (g_Sdebug)
g_printf ("EVENT: default\n");
break;
}
if (update)
{
if (g_Sdebug)
g_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_in_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkStyleContext *style = gtk_widget_get_style_context (widget);
gdouble width, mid, tmp;
GdkRGBA black = { 0.0, 0.0, 0.0, 1.0 };
GdkRGBA white = { 1.0, 1.0, 1.0, 1.0 };
GdkRGBA gray = { 0.5, 0.5, 0.5, 1.0 };
gtk_render_background (style, cr, 0, 0,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
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,
&black, &gray,
g_di.slider_pos[1]);
levels_draw_slider (cr,
&black, &black,
g_di.slider_pos[0]);
levels_draw_slider (cr,
&black, &white,
g_di.slider_pos[2]);
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_BUTTON_PRESS:
if (g_Sdebug)
g_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)
g_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)
g_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)
g_printf ("OUT_EVENT: default\n");
break;
}
if (update)
{
if (g_Sdebug)
g_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;
}
static gboolean
level_out_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkStyleContext *style = gtk_widget_get_style_context (widget);
GdkRGBA black = { 0.0, 0.0, 0.0, 1.0 };
gtk_render_background (style, cr, 0, 0,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
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,
&black, &black,
g_di.slider_pos[3]);
levels_draw_slider (cr,
&black, &black,
g_di.slider_pos[4]);
return FALSE;
}
/* ============================================================================
* smp_dialog
* The Interactive Dialog
* ============================================================================
*/
static gboolean
smp_dialog (PikaProcedure *procedure,
PikaProcedureConfig *config)
{
GtkWidget *dialog;
GtkWidget *hbox;
GtkWidget *vbox2;
GtkWidget *frame;
GtkWidget *grid;
GtkWidget *check_button;
GtkWidget *label;
GtkWidget *combo;
gint ty;
gboolean run;
/* 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;
/* Init GTK */
pika_ui_init (PLUG_IN_BINARY);
/* Main Dialog */
g_di.dialog = dialog =
pika_procedure_dialog_new (procedure,
PIKA_PROCEDURE_CONFIG (config),
_("Sample Colorize"));
/* grid for values */
grid = gtk_grid_new ();
gtk_grid_set_row_spacing (GTK_GRID (grid), 12);
gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
gtk_container_set_border_width (GTK_CONTAINER (grid), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
grid, TRUE, TRUE, 0);
ty = 0;
/* layer combo_box (Dst) */
label = gtk_label_new (_("Destination:"));
gtk_label_set_xalign (GTK_LABEL (label), 1.0);
gtk_grid_attach (GTK_GRID (grid), label, 0, ty, 1, 1);
gtk_widget_show (label);
combo = pika_layer_combo_box_new (smp_constrain, NULL, NULL);
pika_int_combo_box_connect (PIKA_INT_COMBO_BOX (combo),
pika_item_get_id (PIKA_ITEM (g_values.dst)),
G_CALLBACK (smp_dest_combo_callback),
NULL, NULL);
gtk_grid_attach (GTK_GRID (grid), combo, 1, ty, 1, 1);
gtk_widget_show (combo);
/* layer combo_box (Sample) */
label = gtk_label_new (_("Sample:"));
gtk_label_set_xalign (GTK_LABEL (label), 1.0);
gtk_grid_attach (GTK_GRID (grid), label, 3, ty, 1, 1);
gtk_widget_show (label);
combo = pika_layer_combo_box_new (smp_constrain, NULL, NULL);
pika_int_combo_box_prepend (PIKA_INT_COMBO_BOX (combo),
PIKA_INT_STORE_VALUE, SMP_INV_GRADIENT,
PIKA_INT_STORE_LABEL, _("From reverse gradient"),
PIKA_INT_STORE_ICON_NAME, PIKA_ICON_GRADIENT,
-1);
pika_int_combo_box_prepend (PIKA_INT_COMBO_BOX (combo),
PIKA_INT_STORE_VALUE, SMP_GRADIENT,
PIKA_INT_STORE_LABEL, _("From gradient"),
PIKA_INT_STORE_ICON_NAME, PIKA_ICON_GRADIENT,
-1);
pika_int_combo_box_connect (PIKA_INT_COMBO_BOX (combo), g_values.sample_id,
G_CALLBACK (smp_sample_combo_callback),
NULL, NULL);
gtk_grid_attach (GTK_GRID (grid), combo, 4, ty, 1, 1);
gtk_widget_show (combo);
ty++;
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gtk_grid_attach (GTK_GRID (grid), hbox, 0, ty, 2, 1);
gtk_widget_show (hbox);
/* check button */
check_button = gtk_check_button_new_with_mnemonic (_("Sho_w 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_mnemonic (_("Show co_lor"));
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_grid_attach (GTK_GRID (grid), hbox, 3, ty, 2, 1);
gtk_widget_show (hbox);
/* check button */
check_button = gtk_check_button_new_with_mnemonic (_("Show selec_tion"));
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_mnemonic (_("Show c_olor"));
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_grid_attach (GTK_GRID (grid), frame, 0, ty, 2, 1);
gtk_widget_show (frame);
g_di.dst_preview = pika_preview_area_new ();
gtk_widget_set_halign (g_di.dst_preview, GTK_ALIGN_CENTER);
gtk_widget_set_hexpand (g_di.dst_preview, TRUE);
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_grid_attach (GTK_GRID (grid), frame, 3, ty, 2, 1);
gtk_widget_show (frame);
g_di.sample_preview = pika_preview_area_new ();
gtk_widget_set_halign (g_di.sample_preview, GTK_ALIGN_CENTER);
gtk_widget_set_hexpand (g_di.sample_preview, TRUE);
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_grid_attach (GTK_GRID (grid), frame, 0, ty, 2, 1);
g_di.in_lvl_gray_preview = pika_preview_area_new ();
gtk_widget_set_halign (g_di.in_lvl_gray_preview, GTK_ALIGN_CENTER);
gtk_widget_set_hexpand (g_di.in_lvl_gray_preview, TRUE);
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_halign (g_di.in_lvl_drawarea, GTK_ALIGN_CENTER);
gtk_widget_set_hexpand (g_di.in_lvl_drawarea, TRUE);
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);
/* TODO: Fix crash when editing inputs with this enabled */
/* g_signal_connect (g_di.in_lvl_drawarea, "draw",
G_CALLBACK (level_in_draw),
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_grid_attach (GTK_GRID (grid), frame, 3, ty, 2, 1);
g_di.sample_colortab_preview = pika_preview_area_new ();
gtk_widget_set_halign (g_di.sample_colortab_preview, GTK_ALIGN_CENTER);
gtk_widget_set_hexpand (g_di.sample_colortab_preview, TRUE);
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_halign (g_di.sample_drawarea, GTK_ALIGN_CENTER);
gtk_widget_set_hexpand (g_di.sample_drawarea, TRUE);
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);
g_signal_connect (g_di.sample_drawarea, "draw",
G_CALLBACK (level_out_draw),
NULL);
gtk_widget_show (vbox2);
gtk_widget_show (frame);
ty++;
/* PikaProcedureDialog */
pika_procedure_dialog_get_label (PIKA_PROCEDURE_DIALOG (dialog),
"input-label", _("Input levels:"), FALSE,
FALSE);
pika_procedure_dialog_get_widget (PIKA_PROCEDURE_DIALOG (dialog), "in-low",
PIKA_TYPE_SPIN_BUTTON);
pika_procedure_dialog_get_widget (PIKA_PROCEDURE_DIALOG (dialog), "gamma",
PIKA_TYPE_SPIN_BUTTON);
pika_procedure_dialog_get_widget (PIKA_PROCEDURE_DIALOG (dialog), "in-high",
PIKA_TYPE_SPIN_BUTTON);
g_signal_connect (config, "notify::in-low",
G_CALLBACK (smp_adj_lvl_in_min_upd_callback),
NULL);
g_signal_connect (config, "notify::gamma",
G_CALLBACK (smp_text_gamma_upd_callback),
NULL);
g_signal_connect (config, "notify::in-high",
G_CALLBACK (smp_adj_lvl_in_max_upd_callback),
NULL);
hbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"low-hbox","input-label", "in-low",
"gamma", "in-high", NULL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (hbox),
GTK_ORIENTATION_HORIZONTAL);
gtk_widget_set_halign (hbox, GTK_ALIGN_CENTER);
pika_procedure_dialog_get_label (PIKA_PROCEDURE_DIALOG (dialog),
"output-label", _("Output levels:"), FALSE,
FALSE);
pika_procedure_dialog_get_widget (PIKA_PROCEDURE_DIALOG (dialog), "out-low",
PIKA_TYPE_SPIN_BUTTON);
pika_procedure_dialog_get_widget (PIKA_PROCEDURE_DIALOG (dialog), "out-high",
PIKA_TYPE_SPIN_BUTTON);
g_signal_connect (config, "notify::out-low",
G_CALLBACK (smp_adj_lvl_out_min_upd_callback),
NULL);
g_signal_connect (config, "notify::out-high",
G_CALLBACK (smp_adj_lvl_out_max_upd_callback),
NULL);
hbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"high-hbox","output-label", "out-low",
"out-high", NULL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (hbox),
GTK_ORIENTATION_HORIZONTAL);
gtk_widget_set_halign (hbox, GTK_ALIGN_CENTER);
/* Checkboxes */
hbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"intensity-hbox", "hold-inten",
"orig-inten", NULL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (hbox),
GTK_ORIENTATION_HORIZONTAL);
gtk_widget_set_halign (hbox, GTK_ALIGN_CENTER);
g_signal_connect (config, "notify::hold-inten",
G_CALLBACK (smp_toggle_callback),
NULL);
g_signal_connect (config, "notify::orig-inten",
G_CALLBACK (smp_toggle_callback),
NULL);
hbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"sample-hbox", "rnd-subcolors",
"guess-missing", NULL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (hbox),
GTK_ORIENTATION_HORIZONTAL);
gtk_widget_set_halign (hbox, GTK_ALIGN_CENTER);
g_signal_connect (config, "notify::rnd-subcolors",
G_CALLBACK (smp_toggle_callback),
NULL);
g_signal_connect (config, "notify::guess-missing",
G_CALLBACK (smp_toggle_callback),
NULL);
g_di.sample_button = gtk_button_new_with_mnemonic (_("Get _Sample Colors"));
gtk_box_pack_start (GTK_BOX (hbox), g_di.sample_button, FALSE, FALSE, 12);
g_signal_connect (g_di.sample_button, "clicked",
G_CALLBACK (smp_get_colors),
dialog);
gtk_widget_set_visible (g_di.sample_button, TRUE);
gtk_widget_show (grid);
hbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"slider-row", "low-hbox",
"high-hbox", NULL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (hbox),
GTK_ORIENTATION_HORIZONTAL);
hbox = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"check-row", "intensity-hbox",
"sample-hbox", NULL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (hbox),
GTK_ORIENTATION_HORIZONTAL);
vbox2 = pika_procedure_dialog_fill_box (PIKA_PROCEDURE_DIALOG (dialog),
"option-box", "slider-row",
"check-row", NULL);
gtk_box_set_spacing (GTK_BOX (vbox2), 12);
pika_procedure_dialog_fill (PIKA_PROCEDURE_DIALOG (dialog),
"option-box", NULL);
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);
levels_update (INPUT_SLIDERS | INPUT_LEVELS | DRAW);
run = pika_procedure_dialog_run (PIKA_PROCEDURE_DIALOG (dialog));
gtk_widget_destroy (dialog);
return run;
}
/* -----------------------------
* 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: Pika 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]);
}
}
/* -----------------------------
* 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);
}
g_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 = labs (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));
}
/* 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)
{
gegl_buffer_sample (gdrw->buffer, x, y, NULL, pixel, gdrw->format,
GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE);
}
/* 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 PIKA 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 inverse order) */
static void
get_gradient (gint mode)
{
PikaGradient *gradient;
gint n_f_samples;
gdouble *f_samples;
gdouble *f_samp; /* float samples */
gint lum;
free_colors ();
gradient = pika_context_get_gradient ();
pika_gradient_get_uniform_samples (gradient, 256 /* n_samples */,
mode == SMP_INV_GRADIENT,
&n_f_samples, &f_samples);
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 void
end_gdrw (t_GDRW *gdrw)
{
t_GDRW *sel_gdrw = (t_GDRW *) gdrw->sel_gdrw;
if (sel_gdrw && sel_gdrw->buffer)
{
g_object_unref (sel_gdrw->buffer);
sel_gdrw->buffer = NULL;
}
g_object_unref (gdrw->buffer);
gdrw->buffer = NULL;
}
static void
init_gdrw (t_GDRW *gdrw,
PikaDrawable *drawable,
gboolean shadow)
{
PikaImage *image;
PikaDrawable *sel_channel;
gint32 x1, x2, y1, y2;
gint offsetx, offsety;
gint w, h;
gint sel_offsetx, sel_offsety;
t_GDRW *sel_gdrw;
gint32 non_empty;
gdrw->drawable = drawable;
if (shadow)
gdrw->buffer = pika_drawable_get_shadow_buffer (drawable);
else
gdrw->buffer = pika_drawable_get_buffer (drawable);
gdrw->width = pika_drawable_get_width (drawable);
gdrw->height = pika_drawable_get_height (drawable);
gdrw->tile_width = pika_tile_width ();
gdrw->tile_height = pika_tile_height ();
gdrw->shadow = shadow;
gdrw->seldeltax = 0;
gdrw->seldeltay = 0;
/* get offsets within the image */
pika_drawable_get_offsets (gdrw->drawable, &offsetx, &offsety);
if (! pika_drawable_mask_intersect (gdrw->drawable,
&gdrw->x1, &gdrw->y1, &w, &h))
return;
gdrw->x2 = gdrw->x1 + w;
gdrw->y2 = gdrw->y1 + h;
if (pika_drawable_has_alpha (drawable))
gdrw->format = babl_format ("R'G'B'A u8");
else
gdrw->format = babl_format ("R'G'B' u8");
gdrw->bpp = babl_format_get_bytes_per_pixel (gdrw->format);
if (pika_drawable_has_alpha (drawable))
{
/* index of the alpha channelbyte {1|3} */
gdrw->index_alpha = gdrw->bpp -1;
}
else
{
gdrw->index_alpha = 0; /* there is no alpha channel */
}
image = pika_item_get_image (PIKA_ITEM (gdrw->drawable));
/* check and see if we have a selection mask */
sel_channel = PIKA_DRAWABLE (pika_image_get_selection (image));
pika_selection_bounds (image, &non_empty, &x1, &y1, &x2, &y2);
if (non_empty && sel_channel)
{
/* selection is TRUE */
sel_gdrw = g_new0 (t_GDRW, 1);
sel_gdrw->drawable = sel_channel;
sel_gdrw->buffer = pika_drawable_get_buffer (sel_channel);
sel_gdrw->format = babl_format ("Y u8");
sel_gdrw->width = pika_drawable_get_width (sel_channel);
sel_gdrw->height = pika_drawable_get_height (sel_channel);
sel_gdrw->tile_width = pika_tile_width ();
sel_gdrw->tile_height = pika_tile_height ();
sel_gdrw->shadow = shadow;
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 = babl_format_get_bytes_per_pixel (sel_gdrw->format);
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 )
*/
pika_drawable_get_offsets (sel_channel, &sel_offsetx, &sel_offsety);
gdrw->seldeltax = offsetx - sel_offsetx;
gdrw->seldeltay = offsety - sel_offsety;
gdrw->sel_gdrw = (t_GDRW *) sel_gdrw;
if (g_Sdebug)
{
g_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);
g_printf ("init_gdrw: SEL_OFFS x: %d y: %d\n",
(int)sel_offsetx, (int)sel_offsety );
g_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)
pika_progress_init (_("Sample analyze"));
prot_fp = NULL;
if (g_Sdebug)
prot_fp = g_fopen ("sample_colors.dump", "w");
/* ------------------------------------------------
* 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)
pika_progress_update (progress += progress_step);
}
}
}
if (g_show_progress)
pika_progress_update (1.0);
if (g_Sdebug)
g_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");
/* find out 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)
{
g_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,
PikaProcedureConfig *config)
{
guchar mapped_color[4];
gint lum;
gdouble orig_lum, mapped_lum;
gdouble grn, red, blu;
gdouble mg, mr, mb;
gdouble dg, dr, db;
gdouble dlum;
gboolean hold_inten = FALSE;
gboolean orig_inten = FALSE;
gboolean rnd_subcolors = FALSE;
g_object_get (config,
"hold-inten", &hold_inten,
"orig-inten", &orig_inten,
"rnd-subcolors", &rnd_subcolors,
NULL);
/* get brightness from (uncolorized) original */
lum = g_out_trans_tab[g_lvl_trans_tab[LUMINOSITY_1 (original)]];
if (rnd_subcolors)
rnd_remap (lum, mapped_color);
else
memcpy (mapped_color, &g_sample_color_tab[3 * lum], 3);
if (hold_inten)
{
if (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,
gboolean has_alpha,
PikaProcedureConfig *config)
{
if (has_alpha)
{
bpp--;
dest[bpp] = src[bpp];
}
remap_pixel (dest, src, bpp, config);
}
static void
colorize_drawable (PikaDrawable *drawable,
PikaProcedureConfig *config)
{
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
GeglBufferIterator *iter;
const Babl *format;
gboolean has_alpha;
gint bpp;
gint x, y, w, h;
gint total_area;
gint area_so_far;
if (! pika_drawable_mask_intersect (drawable, &x, &y, &w, &h))
return;
src_buffer = pika_drawable_get_buffer (drawable);
dest_buffer = pika_drawable_get_shadow_buffer (drawable);
has_alpha = pika_drawable_has_alpha (drawable);
if (has_alpha)
format = babl_format ("R'G'B'A u8");
else
format = babl_format ("R'G'B' u8");
bpp = babl_format_get_bytes_per_pixel (format);
if (g_show_progress)
pika_progress_init (_("Remap colorized"));
total_area = w * h;
area_so_far = 0;
if (total_area <= 0)
goto out;
iter = gegl_buffer_iterator_new (src_buffer,
GEGL_RECTANGLE (x, y, w, h), 0, format,
GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 2);
gegl_buffer_iterator_add (iter, dest_buffer,
GEGL_RECTANGLE (x, y, w, h), 0 , format,
GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE);
while (gegl_buffer_iterator_next (iter))
{
const guchar *src = iter->items[0].data;
guchar *dest = iter->items[1].data;
gint row;
for (row = 0; row < iter->items[0].roi.height; row++)
{
const guchar *s = src;
guchar *d = dest;
gint pixels = iter->items[0].roi.width;
while (pixels--)
{
colorize_func (s, d, bpp, has_alpha, config);
s += bpp;
d += bpp;
}
src += iter->items[0].roi.width * bpp;
dest += iter->items[1].roi.width * bpp;
}
area_so_far += iter->items[0].roi.width * iter->items[0].roi.height;
pika_progress_update ((gdouble) area_so_far / (gdouble) total_area);
}
g_object_unref (src_buffer);
g_object_unref (dest_buffer);
pika_drawable_merge_shadow (drawable, TRUE);
pika_drawable_update (drawable, x, y, w, h);
out:
if (g_show_progress)
pika_progress_update (0.0);
}
/* colorize dst_drawable like sample_drawable */
static int
main_colorize (gint mc_flags,
PikaProcedureConfig *config)
{
t_GDRW sample_gdrw;
gboolean sample_drawable = FALSE;
gint32 max;
gint32 id;
gint rc;
if (g_Sdebug)
get_filevalues (); /* for debugging: read values from file */
/* 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
{
sample_drawable = TRUE;
init_gdrw (&sample_gdrw, pika_drawable_get_by_id (id), FALSE);
free_colors ();
rc = sample_analyze (&sample_gdrw);
}
}
if ((mc_flags & MC_DST_REMAP) && (rc == 0))
{
if (pika_drawable_is_gray (g_values.dst) &&
(mc_flags & MC_DST_REMAP))
{
pika_image_convert_rgb (pika_item_get_image (PIKA_ITEM (g_values.dst)));
}
colorize_drawable (g_values.dst, config);
}
if (sample_drawable)
end_gdrw (&sample_gdrw);
return rc;
}
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