/* * This is a plug-in for the GIMP. * * 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 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * */ /* * Exchange one color with the other (settable threshold to convert from * one color-shade to another...might do wonders on certain images, or be * totally useless on others). * * Author: robert@experimental.net * * Added ability to select "from" color by clicking on the preview image. * As a side effect, clicking twice on the same spot reverses the action, * i.e. you can click once, see the result, and click again to revert. * * Also changed update policies for all sliders to delayed. On a slow machine * the algorithm really chewes up CPU time. * * - timecop@japan.co.jp */ #include "config.h" #include #include #ifdef __GNUC__ #warning GTK_DISABLE_DEPRECATED #endif #undef GTK_DISABLE_DEPRECATED #include #include #include #include "libgimp/stdplugins-intl.h" #define SCALE_WIDTH 128 #define PREVIEW_SIZE 128 /* datastructure to store parameters in */ typedef struct { GimpRGB from; GimpRGB to; GimpRGB threshold; gint32 image; gint32 drawable; } myParams; /* lets prototype */ static void query (void); static void run (gchar *name, gint nparams, GimpParam *param, gint *nreturn_vals, GimpParam **return_vals); static void exchange (void); static void real_exchange (gint, gint, gint, gint, gboolean); static int exchange_dialog (void); static void update_preview (void); static void ok_callback (GtkWidget *, gpointer); static void color_button_callback (GtkWidget *, gpointer); static void scale_callback (GtkAdjustment *, gpointer); /* some global variables */ static GimpDrawable *drw; static gboolean has_alpha; static myParams xargs = { { 0.0, 0.0, 0.0, 1.0 }, { 0.0, 0.0, 0.0, 1.0 }, { 0.0, 0.0, 0.0, 1.0 }, 0, 0 }; static gint running = 0; static GimpPixelRgn origregion; static GtkWidget *preview; static GtkWidget *from_colorbutton; static gint sel_x1, sel_y1, sel_x2, sel_y2; static gint prev_width, prev_height, sel_width, sel_height; static gboolean lock_threshold = FALSE; /* lets declare what we want to do */ GimpPlugInInfo PLUG_IN_INFO = { NULL, /* init_proc */ NULL, /* quit_proc */ query, /* query_proc */ run, /* run_proc */ }; /* run program */ MAIN () /* tell GIMP who we are */ static void query (void) { static GimpParamDef args[] = { { GIMP_PDB_INT32, "run_mode", "Interactive" }, { GIMP_PDB_IMAGE, "image", "Input image" }, { GIMP_PDB_DRAWABLE, "drawable", "Input drawable" }, { GIMP_PDB_INT8, "fromred", "Red value (from)" }, { GIMP_PDB_INT8, "fromgreen", "Green value (from)" }, { GIMP_PDB_INT8, "fromblue", "Blue value (from)" }, { GIMP_PDB_INT8, "tored", "Red value (to)" }, { GIMP_PDB_INT8, "togreen", "Green value (to)" }, { GIMP_PDB_INT8, "toblue", "Blue value (to)" }, { GIMP_PDB_INT8, "red_threshold", "Red threshold" }, { GIMP_PDB_INT8, "green_threshold", "Green threshold" }, { GIMP_PDB_INT8, "blue_threshold", "Blue threshold" } }; gimp_install_procedure ("plug_in_exchange", "Color Exchange", "Exchange one color with another, optionally setting a threshold " "to convert from one shade to another", "robert@experimental.net", "robert@experimental.net", "June 17th, 1997", N_("/Filters/Colors/Map/Color Exchange..."), "RGB*", GIMP_PLUGIN, G_N_ELEMENTS (args), 0, args, NULL); } /* main function */ static void run (gchar *name, gint nparams, GimpParam *param, gint *nreturn_vals, GimpParam **return_vals) { static GimpParam values[1]; GimpRunMode runmode; GimpPDBStatusType status = GIMP_PDB_SUCCESS; *nreturn_vals = 1; *return_vals = values; values[0].type = GIMP_PDB_STATUS; values[0].data.d_status = status; runmode = param[0].data.d_int32; xargs.image = param[1].data.d_image; xargs.drawable = param[2].data.d_drawable; drw = gimp_drawable_get (xargs.drawable); /* initialize misc. things */ gimp_drawable_mask_bounds (drw->drawable_id, &sel_x1, &sel_y1, &sel_x2, &sel_y2); sel_width = sel_x2 - sel_x1; sel_height = sel_y2 - sel_y1; if (sel_width > PREVIEW_SIZE) prev_width = PREVIEW_SIZE; else prev_width = sel_width; if (sel_height > PREVIEW_SIZE) prev_height = PREVIEW_SIZE; else prev_height = sel_height; has_alpha = gimp_drawable_has_alpha (drw->drawable_id); switch (runmode) { case GIMP_RUN_INTERACTIVE: INIT_I18N_UI(); /* retrieve stored arguments (if any) */ gimp_get_data ("plug_in_exchange", &xargs); /* initialize using foreground color */ gimp_palette_get_foreground (&xargs.from); if (! exchange_dialog ()) return; break; case GIMP_RUN_WITH_LAST_VALS: INIT_I18N(); gimp_get_data ("plug_in_exchange", &xargs); /* * instead of recalling the last-set values, * run with the current foreground as 'from' * color, making ALT-F somewhat more useful. */ gimp_palette_get_foreground (&xargs.from); break; case GIMP_RUN_NONINTERACTIVE: INIT_I18N(); if (nparams != 12) { status = GIMP_PDB_EXECUTION_ERROR; } else { gimp_rgb_set_uchar (&xargs.from, param[3].data.d_int8, param[4].data.d_int8, param[5].data.d_int8); gimp_rgb_set_uchar (&xargs.to, param[6].data.d_int8, param[7].data.d_int8, param[8].data.d_int8); gimp_rgb_set_uchar (&xargs.threshold, param[9].data.d_int8, param[10].data.d_int8, param[11].data.d_int8); } break; default: break; } if (status == GIMP_PDB_SUCCESS) { if (gimp_drawable_is_rgb (drw->drawable_id)) { gimp_progress_init (_("Color Exchange...")); gimp_tile_cache_ntiles (2 * (drw->width / gimp_tile_width () + 1)); exchange (); gimp_drawable_detach( drw); /* store our settings */ if (runmode == GIMP_RUN_INTERACTIVE) gimp_set_data ("plug_in_exchange", &xargs, sizeof (myParams)); /* and flush */ if (runmode != GIMP_RUN_NONINTERACTIVE) gimp_displays_flush (); } else status = GIMP_PDB_EXECUTION_ERROR; } values[0].data.d_status = status; } /* do the exchanging */ static void exchange (void) { /* do the real exchange */ real_exchange (-1, -1, -1, -1, FALSE); } static gboolean preview_event_handler (GtkWidget *widget, GdkEvent *event) { gint pos; guchar *buf; GimpRGB color; buf = GTK_PREVIEW (widget)->buffer; switch(event->type) { case GDK_BUTTON_PRESS: pos = event->button.x * GTK_PREVIEW(widget)->bpp + event->button.y * GTK_PREVIEW(widget)->rowstride; gimp_rgb_set_uchar (&color, buf[pos], buf[pos + 1], buf[pos + 2]); gimp_color_button_set_color (GIMP_COLOR_BUTTON (from_colorbutton), &color); break; default: break; } return FALSE; } /* show our dialog */ static gint exchange_dialog (void) { GtkWidget *dialog; GtkWidget *mainbox; GtkWidget *frame; GtkWidget *abox; GtkWidget *pframe; GtkWidget *table; GtkWidget *threshold; GtkWidget *colorbutton; GtkWidget *scale; GtkObject *adj; gint framenumber; gimp_ui_init ("exchange", TRUE); /* load pixelregion */ gimp_pixel_rgn_init (&origregion, drw, 0, 0, PREVIEW_SIZE, PREVIEW_SIZE, FALSE, FALSE); /* set up the dialog */ dialog = gimp_dialog_new (_("Color Exchange"), "exchange", gimp_standard_help_func, "filters/exchange.html", GTK_WIN_POS_MOUSE, FALSE, TRUE, FALSE, GTK_STOCK_CANCEL, gtk_widget_destroy, NULL, 1, NULL, FALSE, TRUE, GTK_STOCK_OK, ok_callback, NULL, NULL, NULL, TRUE, FALSE, NULL); g_signal_connect (G_OBJECT (dialog), "destroy", G_CALLBACK (gtk_main_quit), NULL); /* do some boxes here */ mainbox = gtk_vbox_new (FALSE, 4); gtk_container_set_border_width (GTK_CONTAINER (mainbox), 6); gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), mainbox, TRUE, TRUE, 0); frame = gtk_frame_new (_("Preview: Click Inside to Pick \"From Color\"")); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN); gtk_box_pack_start (GTK_BOX (mainbox), frame, FALSE, FALSE, 0); gtk_widget_show (frame); abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0); gtk_container_add (GTK_CONTAINER (frame), abox); gtk_widget_show (abox); pframe = gtk_frame_new (NULL); gtk_frame_set_shadow_type (GTK_FRAME (pframe), GTK_SHADOW_IN); gtk_container_set_border_width (GTK_CONTAINER (pframe), 4); gtk_container_add (GTK_CONTAINER (abox), pframe); gtk_widget_show (pframe); preview = gtk_preview_new (GTK_PREVIEW_COLOR); gtk_preview_size (GTK_PREVIEW (preview), prev_width, prev_height); gtk_container_add (GTK_CONTAINER (pframe), preview); gtk_widget_set_events (GTK_WIDGET(preview), GDK_BUTTON_PRESS_MASK | GDK_BUTTON1_MOTION_MASK); gtk_widget_show (preview); g_signal_connect (G_OBJECT (preview), "event", G_CALLBACK (preview_event_handler), NULL); update_preview (); /* a hidden color_button to handle the threshold more easily */ threshold = gimp_color_button_new (NULL, 1, 1, &xargs.threshold, GIMP_COLOR_AREA_FLAT); g_signal_connect (G_OBJECT (threshold), "color_changed", G_CALLBACK (gimp_color_button_get_color), &xargs.threshold); g_signal_connect (G_OBJECT (threshold), "color_changed", G_CALLBACK (color_button_callback), &xargs.threshold); /* and our scales */ for (framenumber = 0; framenumber < 2; framenumber++) { frame = gtk_frame_new (framenumber ? _("To Color") : _("From Color")); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN); gtk_box_pack_start (GTK_BOX (mainbox), frame, FALSE, FALSE, 0); gtk_widget_show (frame); table = gtk_table_new (framenumber ? 3 : 9, 4, FALSE); gtk_table_set_col_spacings (GTK_TABLE (table), 4); gtk_table_set_row_spacings (GTK_TABLE (table), 2); gtk_container_set_border_width (GTK_CONTAINER (table), 4); gtk_container_add (GTK_CONTAINER (frame), table); gtk_widget_show (table); colorbutton = gimp_color_button_new (framenumber ? _("Color Exchange: To Color") : _("Color Exchange: From Color"), SCALE_WIDTH / 2, 16, framenumber ? &xargs.to : &xargs.from, GIMP_COLOR_AREA_FLAT); gimp_table_attach_aligned (GTK_TABLE (table), 0, 0, NULL, 0.0, 0.0, colorbutton, 1, TRUE); g_signal_connect (G_OBJECT (colorbutton), "color_changed", G_CALLBACK (gimp_color_button_get_color), framenumber ? &xargs.to : &xargs.from); g_signal_connect (G_OBJECT (colorbutton), "color_changed", G_CALLBACK (color_button_callback), framenumber ? &xargs.to : &xargs.from); if (!framenumber) from_colorbutton = colorbutton; /* Red */ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1, _("Red:"), SCALE_WIDTH, 0, framenumber ? xargs.to.r : xargs.from.r, 0.0, 1.0, 0.01, 0.1, 3, TRUE, 0, 0, NULL, NULL); g_object_set_data (G_OBJECT (adj), "colorbutton", colorbutton); g_object_set_data (G_OBJECT (colorbutton), "red", adj); g_signal_connect (G_OBJECT (adj), "value_changed", G_CALLBACK (gimp_double_adjustment_update), framenumber ? &xargs.to.r : &xargs.from.r); g_signal_connect (G_OBJECT (adj), "value_changed", G_CALLBACK (scale_callback), framenumber ? &xargs.to : &xargs.from); scale = GTK_WIDGET (GIMP_SCALE_ENTRY_SCALE (adj)); gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED); if (! framenumber) { adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 2, _("Red Threshold:"), SCALE_WIDTH, 0, xargs.threshold.r, 0.0, 1.0, 0.01, 0.1, 3, TRUE, 0, 0, NULL, NULL); g_object_set_data (G_OBJECT (adj), "colorbutton", threshold); g_object_set_data (G_OBJECT (threshold), "red", adj); g_signal_connect (G_OBJECT (adj), "value_changed", G_CALLBACK (gimp_double_adjustment_update), &xargs.threshold.r); g_signal_connect (G_OBJECT (adj), "value_changed", G_CALLBACK (scale_callback), &xargs.threshold); scale = GTK_WIDGET (GIMP_SCALE_ENTRY_SCALE (adj)); gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED); } /* Green */ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 3, _("Green:"), SCALE_WIDTH, 0, framenumber ? xargs.to.g : xargs.from.g, 0.0, 1.0, 0.01, 0.1, 3, TRUE, 0, 0, NULL, NULL); g_object_set_data (G_OBJECT (adj), "colorbutton", colorbutton); g_object_set_data (G_OBJECT (colorbutton), "green", adj); g_signal_connect (G_OBJECT (adj), "value_changed", G_CALLBACK (gimp_double_adjustment_update), framenumber ? &xargs.to.g : &xargs.from.g); g_signal_connect (G_OBJECT (adj), "value_changed", G_CALLBACK (scale_callback), framenumber ? &xargs.to : &xargs.from); scale = GTK_WIDGET (GIMP_SCALE_ENTRY_SCALE (adj)); gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED); if (! framenumber) { adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 4, _("Green Threshold:"), SCALE_WIDTH, 0, xargs.threshold.g, 0.0, 1.0, 0.01, 0.1, 3, TRUE, 0, 0, NULL, NULL); g_object_set_data (G_OBJECT (adj), "colorbutton", threshold); g_object_set_data (G_OBJECT (threshold), "green", adj); g_signal_connect (G_OBJECT (adj), "value_changed", G_CALLBACK (gimp_double_adjustment_update), &xargs.threshold.g); g_signal_connect (G_OBJECT (adj), "value_changed", G_CALLBACK (scale_callback), &xargs.threshold); scale = GTK_WIDGET (GIMP_SCALE_ENTRY_SCALE (adj)); gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED); } /* Blue */ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 5, _("Blue:"), SCALE_WIDTH, 0, framenumber ? xargs.to.b : xargs.from.b, 0.0, 1.0, 0.01, 0.1, 3, TRUE, 0, 0, NULL, NULL); g_object_set_data (G_OBJECT (adj), "colorbutton", colorbutton); g_object_set_data (G_OBJECT (colorbutton), "blue", adj); g_signal_connect (G_OBJECT (adj), "value_changed", G_CALLBACK (gimp_double_adjustment_update), framenumber ? &xargs.to.b : &xargs.from.b); g_signal_connect (G_OBJECT (adj), "value_changed", G_CALLBACK (scale_callback), framenumber ? &xargs.to : &xargs.from); scale = GTK_WIDGET (GIMP_SCALE_ENTRY_SCALE (adj)); gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED); if (! framenumber) { adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 6, _("Blue Threshold:"), SCALE_WIDTH, 0, xargs.threshold.b, 0.0, 1.0, 0.01, 0.1, 3, TRUE, 0, 0, NULL, NULL); g_object_set_data (G_OBJECT (adj), "colorbutton", threshold); g_object_set_data (G_OBJECT (threshold), "blue", adj); g_signal_connect (G_OBJECT (adj), "value_changed", G_CALLBACK (gimp_double_adjustment_update), &xargs.threshold.b); g_signal_connect (G_OBJECT (adj), "value_changed", G_CALLBACK (scale_callback), &xargs.threshold); scale = GTK_WIDGET (GIMP_SCALE_ENTRY_SCALE (adj)); gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED); } if (! framenumber) { GtkWidget *button; button = gtk_check_button_new_with_label (_("Lock Thresholds")); gtk_table_attach (GTK_TABLE (table), button, 1, 3, 7, 8, GTK_FILL, 0, 0, 0); gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), lock_threshold); gtk_widget_show (button); g_signal_connect (G_OBJECT (button), "clicked", G_CALLBACK (gimp_toggle_button_update), &lock_threshold); } } /* show everything */ gtk_widget_show (mainbox); gtk_widget_show (dialog); gtk_main (); gdk_flush (); return running; } static void ok_callback (GtkWidget *widget, gpointer data) { running = TRUE; gtk_widget_destroy (GTK_WIDGET (data)); } static void color_button_callback (GtkWidget *widget, gpointer data) { GtkObject *red_adj; GtkObject *green_adj; GtkObject *blue_adj; GimpRGB *color; color = (GimpRGB *) data; red_adj = (GtkObject *) g_object_get_data (G_OBJECT (widget), "red"); green_adj = (GtkObject *) g_object_get_data (G_OBJECT (widget), "green"); blue_adj = (GtkObject *) g_object_get_data (G_OBJECT (widget), "blue"); if (red_adj) gtk_adjustment_set_value (GTK_ADJUSTMENT (red_adj), color->r); if (green_adj) gtk_adjustment_set_value (GTK_ADJUSTMENT (green_adj), color->g); if (blue_adj) gtk_adjustment_set_value (GTK_ADJUSTMENT (blue_adj), color->b); update_preview (); } static void scale_callback (GtkAdjustment *adj, gpointer data) { GtkObject *object; GimpRGB *color; color = (GimpRGB *) data; object = g_object_get_data (G_OBJECT (adj), "colorbutton"); if (GIMP_IS_COLOR_BUTTON (object)) { if (color == &xargs.threshold && lock_threshold == TRUE) gimp_rgb_set (color, adj->value, adj->value, adj->value); gimp_color_button_set_color (GIMP_COLOR_BUTTON (object), color); update_preview (); } } static void update_preview (void) { real_exchange (sel_x1, sel_y1, sel_x1 + prev_width, sel_y1 + prev_height, TRUE); gtk_widget_queue_draw (preview); gdk_flush (); } static void real_exchange (gint x1, gint y1, gint x2, gint y2, gboolean do_preview) { GimpPixelRgn srcPR, destPR; guchar min_red, min_green, min_blue; guchar max_red, max_green, max_blue; guchar from_red, from_green, from_blue; guchar to_red, to_green, to_blue; guchar *src_row, *dest_row; guint x, y, bpp = drw->bpp; guint width, height; GimpRGB min; GimpRGB max; /* fill if necessary */ if (x1 == -1 || y1 == -1 || x2 == -1 || y2 == -1) { x1 = sel_x1; y1 = sel_y1; x2 = sel_x2; y2 = sel_y2; } /* check for valid coordinates */ width = x2 - x1; height = y2 - y1; /* allocate memory */ src_row = g_new (guchar, drw->width * bpp); gimp_rgb_get_uchar (&xargs.from, &from_red, &from_green, &from_blue); gimp_rgb_get_uchar (&xargs.to, &to_red, &to_green, &to_blue); /* get boundary values */ min = xargs.from; gimp_rgb_subtract (&min, &xargs.threshold); gimp_rgb_clamp (&min); gimp_rgb_get_uchar (&min, &min_red, &min_green, &min_blue); max = xargs.from; gimp_rgb_add (&max, &xargs.threshold); gimp_rgb_clamp (&max); gimp_rgb_get_uchar (&max, &max_red, &max_green, &max_blue); if (do_preview && has_alpha) dest_row = g_new (guchar, drw->width * (bpp - 1)); else dest_row = g_new (guchar, drw->width * bpp); gimp_pixel_rgn_init (&srcPR, drw, x1, y1, width, height, FALSE, FALSE); if (! do_preview) gimp_pixel_rgn_init (&destPR, drw, x1, y1, width, height, TRUE, TRUE); for (y = y1; y < y2; y++) { gimp_pixel_rgn_get_row (&srcPR, src_row, x1, y, width); for (x = 0; x < width; x++) { guchar pixel_red, pixel_green, pixel_blue; guchar new_red, new_green, new_blue; guint idx; /* get current pixel-values */ pixel_red = src_row[x * bpp]; pixel_green = src_row[x * bpp + 1]; pixel_blue = src_row[x * bpp + 2]; /* shift down for preview */ if (do_preview && has_alpha) idx = x * (bpp - 1); else idx = x * bpp; /* want this pixel? */ if (pixel_red >= min_red && pixel_red <= max_red && pixel_green >= min_green && pixel_green <= max_green && pixel_blue >= min_blue && pixel_blue <= max_blue) { guchar red_delta, green_delta, blue_delta; red_delta = pixel_red > from_red ? pixel_red - from_red : from_red - pixel_red; green_delta = pixel_green > from_green ? pixel_green - from_green : from_green - pixel_green; blue_delta = pixel_blue > from_blue ? pixel_blue - from_blue : from_blue - pixel_blue; new_red = CLAMP (to_red + red_delta, 0, 255); new_green = CLAMP (to_green + green_delta, 0, 255); new_blue = CLAMP (to_blue + blue_delta, 0, 255); } else { new_red = pixel_red; new_green = pixel_green; new_blue = pixel_blue; } /* fill buffer */ dest_row[idx + 0] = new_red; dest_row[idx + 1] = new_green; dest_row[idx + 2] = new_blue; /* copy alpha-channel */ if (!do_preview && has_alpha) dest_row[idx + 3] = src_row[x * bpp + 3]; } /* store the dest */ if (do_preview) gtk_preview_draw_row (GTK_PREVIEW (preview), dest_row, 0, y - y1, width); else gimp_pixel_rgn_set_row (&destPR, dest_row, x1, y, width); /* and tell the user what we're doing */ if (! do_preview && (y % 10) == 0) gimp_progress_update ((gdouble) y / (gdouble) height); } g_free(src_row); g_free(dest_row); if (! do_preview) { /* update the processed region */ gimp_drawable_flush (drw); gimp_drawable_merge_shadow (drw->drawable_id, TRUE); gimp_drawable_update (drw->drawable_id, x1, y1, width, height); } }