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