gimp/plug-ins/common/fp.c

282 lines
6.8 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include "gtk/gtk.h"
#include "libgimp/gimp.h"
#include "fp.h"
#include "fp_hsv.h"
FP_Params Current =
{
1,
.25, /* Initial Roughness */
NULL,
.6, /* Initial Degree of Aliasing */
NULL,
80,
NULL,
MIDTONES, /* Initial Range */
BY_VAL, /* Initial God knows what */
TRUE, /* Selection Only */
TRUE, /* Real Time */
0, /* Offset */
0,
{32,224,255},
{0,0,0}
};
GDrawable *drawable, *mask;
void query (void);
void run (char *name,
int nparams,
GParam *param,
int *nreturn_vals,
GParam **return_vals);
GPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN()
void
query ()
{
GParamDef args[] =
{
{ PARAM_INT32, "run_mode", "Interactive, non-interactive" },
{ PARAM_IMAGE, "image", "Input image (used for indexed images)" },
{ PARAM_DRAWABLE, "drawable", "Input drawable" },
};
GParamDef *return_vals = NULL;
int nargs = sizeof (args) / sizeof (args[0]);
int nreturn_vals = 0;
gimp_install_procedure ("plug_in_filter_pack",
"Allows the user to change H, S, or C with many previews",
"Then something else here",
"Pavel Grinfeld (pavel@ml.com)",
"Pavel Grinfeld (pavel@ml.com)",
"27th March 1997",
"<Image>/Filters/Darkroom/Filter Pack",
"RGB*,INDEXED*,GRAY*",
PROC_PLUG_IN,
nargs, nreturn_vals,
args, return_vals);
}
/********************************STANDARD RUN*************************/
void
run (char *name,
int nparams,
GParam *param,
int *nreturn_vals,
GParam **return_vals)
{
GParam values[1];
GStatusType status = STATUS_SUCCESS;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = PARAM_STATUS;
values[0].data.d_status = status;
initializeFilterPacks();
drawable = gimp_drawable_get (param[2].data.d_drawable);
mask=gimp_drawable_get(gimp_image_get_selection(param[1].data.d_image));
if (gimp_drawable_indexed (drawable->id) ||gimp_drawable_gray (drawable->id) ) {
ErrorMessage("Convert the image to RGB first!");
status = STATUS_EXECUTION_ERROR;
}
else if (gimp_drawable_color (drawable->id) && fp_dialog())
{
gimp_progress_init ("Applying the Filter Pack...");
gimp_tile_cache_ntiles (2 * (drawable->width / gimp_tile_width () + 1));
fp (drawable);
gimp_displays_flush ();
}
else status = STATUS_EXECUTION_ERROR;
values[0].data.d_status = status;
if (status==STATUS_SUCCESS)
gimp_drawable_detach (drawable);
}
void
fp_row (const guchar *src_row,
guchar *dest_row,
gint row,
gint row_width,
gint bytes)
{
gint col, bytenum, k;
int JudgeBy, Intensity=0, P[3], backupP[3];
hsv H,S,V;
gint M, m, middle;
for (col = 0; col < row_width ; col++)
{
backupP[0] = P[0] = src_row[col*bytes+0];
backupP[0] = P[1] = src_row[col*bytes+1];
backupP[0] = P[2] = src_row[col*bytes+2];
rgb_to_hsv(P[0]/255.0, P[1]/255.0, P[2]/255.0, &H, &S, &V);
for (JudgeBy=BY_HUE; JudgeBy<JUDGE_BY; JudgeBy++) {
if (!Current.Touched[JudgeBy]) continue;
switch (JudgeBy) {
case BY_HUE:
Intensity=255*H;
break;
case BY_SAT:
Intensity=255*S;
break;
case BY_VAL:
Intensity=255*V;
break;
}
/* It's important to take care of Saturation first!!! */
m = MIN(MIN(P[0],P[1]),P[2]);
M = MAX(MAX(P[0],P[1]),P[2]);
middle=(M+m)/2;
for (k=0; k<3; k++)
if (P[k]!=m && P[k]!=M) middle=P[k];
for (k=0; k<3; k++)
if (M!=m) {
if (P[k] == M)
P[k] = MAX(P[k]+Current.satAdj[JudgeBy][Intensity],middle);
else if (P[k] == m)
P[k] = MIN(P[k]-Current.satAdj[JudgeBy][Intensity],middle);
}
P[0] += Current.redAdj[JudgeBy][Intensity];
P[1] += Current.greenAdj[JudgeBy][Intensity];
P[2] += Current.blueAdj[JudgeBy][Intensity];
P[0] = MAX(0,MIN(255, P[0]));
P[1] = MAX(0,MIN(255, P[1]));
P[2] = MAX(0,MIN(255, P[2]));
}
dest_row[col*bytes + 0] = P[0];
dest_row[col*bytes + 1] = P[1];
dest_row[col*bytes + 2] = P[2];
if (bytes>3)
for (bytenum = 3; bytenum<bytes; bytenum++)
dest_row[col*bytes+bytenum] = src_row[col*bytes+bytenum];
}
}
void fp (GDrawable *drawable)
{
GPixelRgn srcPR, destPR;
gint width, height;
gint bytes;
guchar *src_row, *dest_row;
gint row;
gint x1, y1, x2, y2;
gimp_drawable_mask_bounds (drawable->id, &x1, &y1, &x2, &y2);
width = drawable->width;
height = drawable->height;
bytes = drawable->bpp;
src_row = (guchar *) malloc ((x2 - x1) * bytes);
dest_row = (guchar *) malloc ((x2 - x1) * bytes);
gimp_pixel_rgn_init (&srcPR, drawable, 0, 0, width, height, FALSE, FALSE);
gimp_pixel_rgn_init (&destPR, drawable, 0, 0, width, height, TRUE, TRUE);
for (row = y1; row < y2; row++)
{
gimp_pixel_rgn_get_row (&srcPR, src_row, x1, row, (x2 - x1));
fp_row (src_row,
dest_row,
row,
(x2 - x1),
bytes
);
gimp_pixel_rgn_set_row (&destPR, dest_row, x1, row, (x2 - x1));
if ((row % 10) == 0)
gimp_progress_update ((double) row / (double) (y2 - y1));
}
/* update the processed region */
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->id, TRUE);
gimp_drawable_update (drawable->id, x1, y1, (x2 - x1), (y2 - y1));
free (src_row);
free (dest_row);
}
void
ErrorMessage(guchar *message)
{
GtkWidget *window, *label, *button,*table;
gchar **argv=g_new (gchar *, 1);
gint argc=1;
argv[0] = g_strdup ("fp");
gtk_init (&argc, &argv);
gtk_rc_parse (gimp_gtkrc());
window=gtk_dialog_new();
gtk_window_position (GTK_WINDOW (window), GTK_WIN_POS_MOUSE);
gtk_window_set_title(GTK_WINDOW(window),"Filter Pack Simulation Message");
gtk_signal_connect (GTK_OBJECT (window), "destroy",
(GtkSignalFunc) fp_close_callback,
NULL);
button = gtk_button_new_with_label ("Got It!");
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) fp_ok_callback,
window);
gtk_widget_grab_default (button);
gtk_widget_show (button);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (window)->action_area), button, TRUE, TRUE, 0);
table=gtk_table_new(2,2,FALSE);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(window)->vbox),table,TRUE,TRUE,0);
gtk_widget_show(table);
label=gtk_label_new("");
gtk_label_set_text(GTK_LABEL(label),message);
gtk_widget_show(label);
gtk_table_attach(GTK_TABLE(table),label,0,1,0,1,
GTK_FILL|GTK_EXPAND,GTK_FILL|GTK_EXPAND,15,15);
gtk_widget_show(window);
gtk_main ();
}