/* * This is the FlareFX plug-in for the GIMP 0.99 * Version 1.04 * * Copyright (C) 1997-1998 Karl-Johan Andersson (t96kja@student.tdb.uu.se) * * 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. * */ /* * Please send any comments or suggestions to me, * Karl-Johan Andersson (t96kja@student.tdb.uu.se) * * TODO: * - add "streaks" from lightsource * - improve the user interface * - speed it up * - more flare types, more control (color, size, intensity...) * * Missing something? - please contact me! * */ #include #include #include #include "libgimp/gimp.h" #include "gtk/gtk.h" /* --- Defines --- */ #define ENTRY_WIDTH 75 #define PREVIEW_SIZE 100 #define PREVIEW_MASK GDK_EXPOSURE_MASK | \ GDK_BUTTON_PRESS_MASK | \ GDK_BUTTON1_MOTION_MASK #define PREVIEW 0x1 #define CURSOR 0x2 #define ALL 0xf #if 0 #define DEBUG1 printf #else #define DEBUG1 dummy_printf static void dummy_printf( char *fmt, ... ) {} #endif /* --- Typedefs --- */ typedef struct { gint posx; gint posy; } FlareValues; typedef struct { gint run; } FlareInterface; typedef struct RGBFLOAT { gfloat r; gfloat g; gfloat b; } RGBfloat; typedef struct REFLECT { RGBfloat ccol; gfloat size; gint xp; gint yp; gint type; } Reflect; typedef struct { GDrawable *drawable; gint dwidth, dheight; gint bpp; GtkWidget *xentry, *yentry; GtkWidget *preview; gint pwidth, pheight; gint cursor; gint curx, cury; /* x,y of cursor in preview */ gint oldx, oldy; gint in_call; } FlareCenter; /* --- Declare local functions --- */ static void query (void); static void run (char *name, int nparams, GParam *param, int *nreturn_vals, GParam **return_vals); static gint flare_dialog ( GDrawable *drawable ); static GtkWidget * flare_center_create ( GDrawable *drawable ); static void flare_center_destroy ( GtkWidget *widget, gpointer data ); static void flare_center_preview_init ( FlareCenter *center ); static void flare_center_draw ( FlareCenter *center, gint update ); static void flare_center_entry_update ( GtkWidget *widget, gpointer data ); static void flare_center_cursor_update ( FlareCenter *center ); static gint flare_center_preview_expose ( GtkWidget *widget, GdkEvent *event ); static gint flare_center_preview_events ( GtkWidget *widget, GdkEvent *event ); static void flare_close_callback (GtkWidget *widget, gpointer data); static void flare_ok_callback (GtkWidget *widget, gpointer data); static void FlareFX (GDrawable *drawable); void mcolor (guchar *s, gfloat h); void mglow (guchar *s, gfloat h); void minner (guchar *s, gfloat h); void mouter (guchar *s, gfloat h); void mhalo (guchar *s, gfloat h); void initref (gint sx, gint sy, gint width, gint height, gint matt); void fixpix (guchar *data, float procent, RGBfloat colpro); void mrt1 (guchar *s, gint i, gint col, gint row); void mrt2 (guchar *s, gint i, gint col, gint row); void mrt3 (guchar *s, gint i, gint col, gint row); void mrt4 (guchar *s, gint i, gint col, gint row); /* --- Variables --- */ GPlugInInfo PLUG_IN_INFO = { NULL, /* init_proc */ NULL, /* quit_proc */ query, /* query_proc */ run, /* run_proc */ }; static FlareValues fvals = { 128, 128 /* posx, posy */ }; static FlareInterface fint = { FALSE /* run */ }; gfloat scolor, sglow, sinner, souter; /* size */ gfloat shalo; gint xs, ys; gint numref; RGBfloat color, glow, inner, outer, halo; Reflect ref1[19]; /* --- Functions --- */ MAIN () static void query () { static GParamDef args[] = { { PARAM_INT32, "run_mode", "Interactive, non-interactive" }, { PARAM_IMAGE, "image", "Input image (unused)" }, { PARAM_DRAWABLE, "drawable", "Input drawable" }, { PARAM_INT32, "posx", "X-position" }, { PARAM_INT32, "posy", "Y-position" } }; static GParamDef *return_vals = NULL; static int nargs = sizeof (args) / sizeof (args[0]); static int nreturn_vals = 0; gimp_install_procedure ("plug_in_flarefx", "Add lens flare effetcs", "More here later", "Karl-Johan Andersson", /* Author */ "Karl-Johan Andersson", /* Copyright */ "1998", "/Filters/Light Effects/FlareFX...", "RGB*", PROC_PLUG_IN, nargs, nreturn_vals, args, return_vals); } static void run (gchar *name, gint nparams, GParam *param, gint *nreturn_vals, GParam **return_vals) { static GParam values[1]; GDrawable *drawable; GRunModeType run_mode; GStatusType status = STATUS_SUCCESS; run_mode = param[0].data.d_int32; *nreturn_vals = 1; *return_vals = values; values[0].type = PARAM_STATUS; values[0].data.d_status = status; /* Get the specified drawable */ drawable = gimp_drawable_get (param[2].data.d_drawable); switch (run_mode) { case RUN_INTERACTIVE: /* Possibly retrieve data */ gimp_get_data ("plug_in_flarefx", &fvals); /* First acquire information with a dialog */ if (! flare_dialog ( drawable )) { gimp_drawable_detach (drawable); return; } break; case RUN_NONINTERACTIVE: /* Make sure all the arguments are there! */ if (nparams != 5) status = STATUS_CALLING_ERROR; if (status == STATUS_SUCCESS) { fvals.posx = (gint) param[3].data.d_int32; fvals.posy = (gint) param[4].data.d_int32; } break; case RUN_WITH_LAST_VALS: /* Possibly retrieve data */ gimp_get_data ("plug_in_flarefx", &fvals); break; default: break; } if (status == STATUS_SUCCESS) { /* Make sure that the drawable is gray or RGB color */ if (gimp_drawable_is_rgb (drawable->id) || gimp_drawable_is_gray (drawable->id)) { gimp_progress_init ("Render flare..."); gimp_tile_cache_ntiles (2 * (drawable->width / gimp_tile_width () + 1)); FlareFX (drawable); if (run_mode != RUN_NONINTERACTIVE) gimp_displays_flush (); /* Store data */ if (run_mode == RUN_INTERACTIVE) gimp_set_data ("plug_in_flarefx", &fvals, sizeof (FlareValues)); } else { /* gimp_message ("FlareFX: cannot operate on indexed color images"); */ status = STATUS_EXECUTION_ERROR; } } values[0].data.d_status = status; gimp_drawable_detach (drawable); } static gint flare_dialog( GDrawable *drawable ) { GtkWidget *dlg; GtkWidget *frame; GtkWidget *hbbox; GtkWidget *button; guchar *color_cube; gchar **argv; gint argc; argc = 1; argv = g_new (gchar *, 1); argv[0] = g_strdup ("flarefx"); gtk_init (&argc, &argv); gtk_rc_parse (gimp_gtkrc ()); gdk_set_use_xshm (gimp_use_xshm ()); gtk_preview_set_gamma (gimp_gamma ()); gtk_preview_set_install_cmap (gimp_install_cmap ()); color_cube = gimp_color_cube (); gtk_preview_set_color_cube (color_cube[0], color_cube[1], color_cube[2], color_cube[3]); gtk_widget_set_default_visual (gtk_preview_get_visual ()); gtk_widget_set_default_colormap (gtk_preview_get_cmap ()); #if 0 printf("Waiting... (pid %d)\n", getpid()); kill(getpid(), 19); /* SIGSTOP */ #endif dlg = gtk_dialog_new (); gtk_window_set_title (GTK_WINDOW (dlg), "FlareFX"); gtk_window_position (GTK_WINDOW (dlg), GTK_WIN_POS_MOUSE); gtk_signal_connect (GTK_OBJECT (dlg), "destroy", (GtkSignalFunc) flare_close_callback, NULL); /* Action area */ gtk_container_set_border_width (GTK_CONTAINER (GTK_DIALOG (dlg)->action_area), 2); gtk_box_set_homogeneous (GTK_BOX (GTK_DIALOG (dlg)->action_area), FALSE); hbbox = gtk_hbutton_box_new (); gtk_button_box_set_spacing (GTK_BUTTON_BOX (hbbox), 4); gtk_box_pack_end (GTK_BOX (GTK_DIALOG (dlg)->action_area), hbbox, FALSE, FALSE, 0); gtk_widget_show (hbbox); button = gtk_button_new_with_label ("OK"); GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT); gtk_signal_connect (GTK_OBJECT (button), "clicked", (GtkSignalFunc) flare_ok_callback, dlg); gtk_box_pack_start (GTK_BOX (hbbox), button, FALSE, FALSE, 0); gtk_widget_grab_default (button); gtk_widget_show (button); button = gtk_button_new_with_label ("Cancel"); GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT); gtk_signal_connect_object (GTK_OBJECT (button), "clicked", (GtkSignalFunc) gtk_widget_destroy, GTK_OBJECT (dlg)); gtk_box_pack_start (GTK_BOX (hbbox), button, FALSE, FALSE, 0); gtk_widget_show (button); /* parameter settings */ frame = flare_center_create ( drawable ); gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN); gtk_container_border_width (GTK_CONTAINER (frame), 10); gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), frame, TRUE, TRUE, 0); gtk_widget_show (frame); gtk_widget_show (dlg); gtk_main (); gdk_flush (); return fint.run; } /* --- Interface functions --- */ static void flare_close_callback (GtkWidget *widget, gpointer data) { gtk_main_quit (); } static void flare_ok_callback (GtkWidget *widget, gpointer data) { fint.run = TRUE; gtk_widget_destroy (GTK_WIDGET (data)); } /* --- Filter functions --- */ static void FlareFX (GDrawable *drawable) { GPixelRgn srcPR, destPR; gint width, height; gint bytes; guchar *dest, *d; guchar *cur_row, *s; gint row, col, i; gint x1, y1, x2, y2; gint matt; gfloat hyp; /* Get the input area. This is the bounding box of the selection in * the image (or the entire image if there is no selection). Only * operating on the input area is simply an optimization. It doesn't * need to be done for correct operation. (It simply makes it go * faster, since fewer pixels need to be operated on). */ gimp_drawable_mask_bounds (drawable->id, &x1, &y1, &x2, &y2); /* Get the size of the input image. (This will/must be the same * as the size of the output image. */ width = drawable->width; height = drawable->height; bytes = drawable->bpp; matt = width; /* allocate row buffers */ cur_row = (guchar *) malloc ((x2 - x1) * bytes); dest = (guchar *) malloc ((x2 - x1) * bytes); /* initialize the pixel regions */ gimp_pixel_rgn_init (&srcPR, drawable, 0, 0, width, height, FALSE, FALSE); gimp_pixel_rgn_init (&destPR, drawable, 0, 0, width, height, TRUE, TRUE); xs = fvals.posx; ys = fvals.posy; scolor = (gfloat)matt * 0.0375; sglow = (gfloat)matt * 0.078125; sinner = (gfloat)matt * 0.1796875; souter = (gfloat)matt * 0.3359375; shalo = (gfloat)matt * 0.084375; color.r = 239.0/255.0; color.g = 239.0/255.0; color.b = 239.0/255.0; glow.r = 245.0/255.0; glow.g = 245.0/255.0; glow.b = 245.0/255.0; inner.r = 255.0/255.0; inner.g = 38.0/255.0; inner.b = 43.0/255.0; outer.r = 69.0/255.0; outer.g = 59.0/255.0; outer.b = 64.0/255.0; halo.r = 80.0/255.0; halo.g = 15.0/255.0; halo.b = 4.0/255.0; initref (xs, ys, width, height, matt); /* Loop through the rows */ for (row = y1; row < y2; row++) /* y-coord */ { gimp_pixel_rgn_get_row (&srcPR, cur_row, x1, row, x2-x1); d = dest; s = cur_row; for (col = x1; col < x2; col++) /* x-coord */ { hyp = hypot (col-xs, row-ys); mcolor (s, hyp); /* make color */ mglow (s, hyp); /* make glow */ minner (s, hyp); /* make inner */ mouter (s, hyp); /* make outer */ mhalo (s, hyp); /* make halo */ for (i = 0; i < numref; i++) { switch (ref1[i].type) { case 1: mrt1 (s, i, col, row); break; case 2: mrt2 (s, i, col, row); break; case 3: mrt3 (s, i, col, row); break; case 4: mrt4 (s, i, col, row); break; } } s+=bytes; } /* store the dest */ gimp_pixel_rgn_set_row (&destPR, cur_row, x1, row, (x2 - x1)); if ((row % 5) == 0) gimp_progress_update ((double) row / (double) (y2 - y1)); } /* update the textured region */ gimp_drawable_flush (drawable); gimp_drawable_merge_shadow (drawable->id, TRUE); gimp_drawable_update (drawable->id, x1, y1, (x2 - x1), (y2 - y1)); free (cur_row); free (dest); } void mcolor (guchar *s, gfloat h) { static gfloat procent; procent = scolor - h; procent/=scolor; if (procent > 0.0) { procent*=procent; fixpix (s, procent, color); } } void mglow (guchar *s, gfloat h) { static gfloat procent; procent = sglow - h; procent/=sglow; if (procent > 0.0) { procent*=procent; fixpix (s, procent, glow); } } void minner (guchar *s, gfloat h) { static gfloat procent; procent = sinner - h; procent/=sinner; if (procent > 0.0) { procent*=procent; fixpix (s, procent, inner); } } void mouter (guchar *s, gfloat h) { static gfloat procent; procent = souter - h; procent/=souter; if (procent > 0.0) fixpix (s, procent, outer); } void mhalo (guchar *s, gfloat h) { static gfloat procent; procent = h - shalo; procent/=(shalo*0.07); procent = fabs (procent); if (procent < 1.0) fixpix (s, 1.0 - procent, halo); } void fixpix (guchar *data, float procent, RGBfloat colpro) { data[0] = data[0] + (255 - data[0]) * procent * colpro.r; data[1] = data[1] + (255 - data[1]) * procent * colpro.g; data[2] = data[2] + (255 - data[2]) * procent * colpro.b; } void initref (gint sx, gint sy, gint width, gint height, gint matt) { gint xh, yh, dx, dy; xh = width / 2; yh = height / 2; dx = xh - sx; dy = yh - sy; numref = 19; ref1[0].type=1; ref1[0].size=(gfloat)matt*0.027; ref1[0].xp=0.6699*dx+xh; ref1[0].yp=0.6699*dy+yh; ref1[0].ccol.r=0.0; ref1[0].ccol.g=14.0/255.0; ref1[0].ccol.b=113.0/255.0; ref1[1].type=1; ref1[1].size=(gfloat)matt*0.01; ref1[1].xp=0.2692*dx+xh; ref1[1].yp=0.2692*dy+yh; ref1[1].ccol.r=90.0/255.0; ref1[1].ccol.g=181.0/255.0; ref1[1].ccol.b=142.0/255.0; ref1[2].type=1; ref1[2].size=(gfloat)matt*0.005; ref1[2].xp=-0.0112*dx+xh; ref1[2].yp=-0.0112*dy+yh; ref1[2].ccol.r=56.0/255.0; ref1[2].ccol.g=140.0/255.0; ref1[2].ccol.b=106.0/255.0; ref1[3].type=2; ref1[3].size=(gfloat)matt*0.031; ref1[3].xp=0.6490*dx+xh; ref1[3].yp=0.6490*dy+yh; ref1[3].ccol.r=9.0/255.0; ref1[3].ccol.g=29.0/255.0; ref1[3].ccol.b=19.0/255.0; ref1[4].type=2; ref1[4].size=(gfloat)matt*0.015; ref1[4].xp=0.4696*dx+xh; ref1[4].yp=0.4696*dy+yh; ref1[4].ccol.r=24.0/255.0; ref1[4].ccol.g=14.0/255.0; ref1[4].ccol.b=0.0; ref1[5].type=2; ref1[5].size=(gfloat)matt*0.037; ref1[5].xp=0.4087*dx+xh; ref1[5].yp=0.4087*dy+yh; ref1[5].ccol.r=24.0/255.0; ref1[5].ccol.g=14.0/255.0; ref1[5].ccol.b=0.0; ref1[6].type=2; ref1[6].size=(gfloat)matt*0.022; ref1[6].xp=-0.2003*dx+xh; ref1[6].yp=-0.2003*dy+yh; ref1[6].ccol.r=42.0/255.0; ref1[6].ccol.g=19.0/255.0; ref1[6].ccol.b=0.0; ref1[7].type=2; ref1[7].size=(gfloat)matt*0.025; ref1[7].xp=-0.4103*dx+xh; ref1[7].yp=-0.4103*dy+yh; ref1[7].ccol.b=17.0/255.0; ref1[7].ccol.g=9.0/255.0; ref1[7].ccol.r=0.0; ref1[8].type=2; ref1[8].size=(gfloat)matt*0.058; ref1[8].xp=-0.4503*dx+xh; ref1[8].yp=-0.4503*dy+yh; ref1[8].ccol.b=10.0/255.0; ref1[8].ccol.g=4.0/255.0; ref1[8].ccol.r=0.0; ref1[9].type=2; ref1[9].size=(gfloat)matt*0.017; ref1[9].xp=-0.5112*dx+xh; ref1[9].yp=-0.5112*dy+yh; ref1[9].ccol.r=5.0/255.0; ref1[9].ccol.g=5.0/255.0; ref1[9].ccol.b=14.0/255.0; ref1[10].type=2; ref1[10].size=(gfloat)matt*0.2; ref1[10].xp=-1.496*dx+xh; ref1[10].yp=-1.496*dy+yh; ref1[10].ccol.r=9.0/255.0; ref1[10].ccol.g=4.0/255.0; ref1[10].ccol.b=0.0; ref1[11].type=2; ref1[11].size=(gfloat)matt*0.5; ref1[11].xp=-1.496*dx+xh; ref1[11].yp=-1.496*dy+yh; ref1[11].ccol.r=9.0/255.0; ref1[11].ccol.g=4.0/255.0; ref1[11].ccol.b=0.0; ref1[12].type=3; ref1[12].size=(gfloat)matt*0.075; ref1[12].xp=0.4487*dx+xh; ref1[12].yp=0.4487*dy+yh; ref1[12].ccol.r=34.0/255.0; ref1[12].ccol.g=19.0/255.0; ref1[12].ccol.b=0.0; ref1[13].type=3; ref1[13].size=(gfloat)matt*0.1; ref1[13].xp=dx+xh; ref1[13].yp=dy+yh; ref1[13].ccol.r=14.0/255.0; ref1[13].ccol.g=26.0/255.0; ref1[13].ccol.b=0.0; ref1[14].type=3; ref1[14].size=(gfloat)matt*0.039; ref1[14].xp=-1.301*dx+xh; ref1[14].yp=-1.301*dy+yh; ref1[14].ccol.r=10.0/255.0; ref1[14].ccol.g=25.0/255.0; ref1[14].ccol.b=13.0/255.0; ref1[15].type=4; ref1[15].size=(gfloat)matt*0.19; ref1[15].xp=1.309*dx+xh; ref1[15].yp=1.309*dy+yh; ref1[15].ccol.r=9.0/255.0; ref1[15].ccol.g=0.0; ref1[15].ccol.b=17.0/255.0; ref1[16].type=4; ref1[16].size=(gfloat)matt*0.195; ref1[16].xp=1.309*dx+xh; ref1[16].yp=1.309*dy+yh; ref1[16].ccol.r=9.0/255.0; ref1[16].ccol.g=16.0/255.0; ref1[16].ccol.b=5.0/255.0; ref1[17].type=4; ref1[17].size=(gfloat)matt*0.20; ref1[17].xp=1.309*dx+xh; ref1[17].yp=1.309*dy+yh; ref1[17].ccol.r=17.0/255.0; ref1[17].ccol.g=4.0/255.0; ref1[17].ccol.b=0.0; ref1[18].type=4; ref1[18].size=(gfloat)matt*0.038; ref1[18].xp=-1.301*dx+xh; ref1[18].yp=-1.301*dy+yh; ref1[18].ccol.r=17.0/255.0; ref1[18].ccol.g=4.0/255.0; ref1[18].ccol.b=0.0; } void mrt1 (guchar *s, gint i, gint col, gint row) { static gfloat procent; procent = ref1[i].size - hypot (ref1[i].xp - col, ref1[i].yp - row); procent/=ref1[i].size; if (procent > 0.0) { procent*=procent; fixpix (s, procent, ref1[i].ccol); } } void mrt2 (guchar *s, gint i, gint col, gint row) { static gfloat procent; procent = ref1[i].size - hypot (ref1[i].xp - col, ref1[i].yp - row); procent/=(ref1[i].size * 0.15); if (procent > 0.0) { if (procent > 1.0) procent = 1.0; fixpix (s, procent, ref1[i].ccol); } } void mrt3 (guchar *s, gint i, gint col, gint row) { static gfloat procent; procent = ref1[i].size - hypot (ref1[i].xp - col, ref1[i].yp - row); procent/=(ref1[i].size * 0.12); if (procent > 0.0) { if (procent > 1.0) procent = 1.0 - (procent * 0.12); fixpix (s, procent, ref1[i].ccol); } } void mrt4 (guchar *s, gint i, gint col, gint row) { static gfloat procent; procent = hypot (ref1[i].xp - col, ref1[i].yp - row) - ref1[i].size; procent/=(ref1[i].size*0.04); procent = fabs (procent); if (procent < 1.0) fixpix(s, 1.0 - procent, ref1[i].ccol); } /*================================================================= CenterFrame A frame that contains one preview and 2 entrys, used for positioning of the center of Nova. ==================================================================*/ /* * Create new CenterFrame, and return it (GtkFrame). */ static GtkWidget * flare_center_create ( GDrawable *drawable ) { FlareCenter *center; GtkWidget *frame; GtkWidget *table; GtkWidget *label; GtkWidget *entry; GtkWidget *pframe; GtkWidget *preview; gchar buf[256]; center = g_new( FlareCenter, 1 ); center->drawable = drawable; center->dwidth = gimp_drawable_width(drawable->id ); center->dheight = gimp_drawable_height(drawable->id ); center->bpp = gimp_drawable_bpp(drawable->id); if ( gimp_drawable_has_alpha(drawable->id) ) center->bpp--; center->cursor = FALSE; center->curx = 0; center->cury = 0; center->oldx = 0; center->oldy = 0; center->in_call = TRUE; /* to avoid side effects while initialization */ frame = gtk_frame_new ( "Center of FlareFX" ); gtk_signal_connect( GTK_OBJECT( frame ), "destroy", (GtkSignalFunc) flare_center_destroy, center ); gtk_frame_set_shadow_type( GTK_FRAME( frame ) ,GTK_SHADOW_ETCHED_IN ); gtk_container_border_width( GTK_CONTAINER( frame ), 10 ); table = gtk_table_new ( 2, 4, FALSE ); gtk_container_border_width (GTK_CONTAINER (table), 10); gtk_container_add (GTK_CONTAINER (frame), table); gtk_table_set_row_spacings (GTK_TABLE (table), 3); gtk_table_set_col_spacings (GTK_TABLE (table), 5); label = gtk_label_new ( "X: " ); gtk_misc_set_alignment( GTK_MISC(label), 0.0, 0.5 ); gtk_table_attach( GTK_TABLE(table), label, 0, 1, 0, 1, GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0 ); gtk_widget_show(label); center->xentry = entry = gtk_entry_new (); gtk_object_set_user_data( GTK_OBJECT(entry), center ); gtk_signal_connect( GTK_OBJECT(entry), "changed", (GtkSignalFunc) flare_center_entry_update, &fvals.posx ); gtk_widget_set_usize( GTK_WIDGET(entry), ENTRY_WIDTH,0 ); gtk_table_attach( GTK_TABLE(table), entry, 1, 2, 0, 1, GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0 ); gtk_widget_show(entry); label = gtk_label_new ( "Y: " ); gtk_misc_set_alignment( GTK_MISC(label), 0.0, 0.5 ); gtk_table_attach( GTK_TABLE(table), label, 2, 3, 0, 1, GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0 ); gtk_widget_show(label); center->yentry = entry = gtk_entry_new (); gtk_object_set_user_data( GTK_OBJECT(entry), center ); gtk_signal_connect( GTK_OBJECT(entry), "changed", (GtkSignalFunc) flare_center_entry_update, &fvals.posy ); gtk_widget_set_usize( GTK_WIDGET(entry), ENTRY_WIDTH, 0 ); gtk_table_attach( GTK_TABLE(table), entry, 3, 4, 0, 1, GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0 ); gtk_widget_show(entry); /* frame (shadow_in) that contains preview */ pframe = gtk_frame_new ( NULL ); gtk_frame_set_shadow_type( GTK_FRAME( pframe ), GTK_SHADOW_IN ); gtk_table_attach( GTK_TABLE(table), pframe, 0, 4, 1, 2, 0, 0, 0, 0 ); /* PREVIEW */ center->preview = preview = gtk_preview_new( center->bpp==3 ? GTK_PREVIEW_COLOR : GTK_PREVIEW_GRAYSCALE ); gtk_object_set_user_data( GTK_OBJECT(preview), center ); gtk_widget_set_events( GTK_WIDGET(preview), PREVIEW_MASK ); gtk_signal_connect_after( GTK_OBJECT(preview), "expose_event", (GtkSignalFunc) flare_center_preview_expose, center ); gtk_signal_connect( GTK_OBJECT(preview), "event", (GtkSignalFunc) flare_center_preview_events, center ); gtk_container_add( GTK_CONTAINER( pframe ), center->preview ); /* * Resize the greater one of dwidth and dheight to PREVIEW_SIZE */ if ( center->dwidth > center->dheight ) { center->pheight = center->dheight * PREVIEW_SIZE / center->dwidth; center->pwidth = PREVIEW_SIZE; } else { center->pwidth = center->dwidth * PREVIEW_SIZE / center->dheight; center->pheight = PREVIEW_SIZE; } gtk_preview_size( GTK_PREVIEW( preview ), center->pwidth, center->pheight ); /* Draw the contents of preview, that is saved in the preview widget */ flare_center_preview_init( center ); gtk_widget_show(preview); gtk_widget_show( pframe ); gtk_widget_show( table ); gtk_widget_show( frame ); sprintf( buf, "%d", fvals.posx ); gtk_entry_set_text( GTK_ENTRY(center->xentry), buf ); sprintf( buf, "%d", fvals.posy ); gtk_entry_set_text( GTK_ENTRY(center->yentry), buf ); flare_center_cursor_update( center ); center->cursor = FALSE; /* Make sure that the cursor has not been drawn */ center->in_call = FALSE; /* End of initialization */ DEBUG1("fvals center=%d,%d\n", fvals.posx, fvals.posy ); DEBUG1("center cur=%d,%d\n", center->curx, center->cury ); return frame; } static void flare_center_destroy ( GtkWidget *widget, gpointer data ) { FlareCenter *center = data; g_free( center ); } static void render_preview ( GtkWidget *preview, GPixelRgn *srcrgn ); /* * Initialize preview * Draw the contents into the internal buffer of the preview widget */ static void flare_center_preview_init ( FlareCenter *center ) { GtkWidget *preview; GPixelRgn src_rgn; gint dwidth, dheight, pwidth, pheight, bpp; preview = center->preview; dwidth = center->dwidth; dheight = center->dheight; pwidth = center->pwidth; pheight = center->pheight; bpp = center->bpp; gimp_pixel_rgn_init ( &src_rgn, center->drawable, 0, 0, center->dwidth, center->dheight, FALSE, FALSE ); render_preview( center->preview, &src_rgn ); } /*====================================================================== Preview Rendering Util routine =======================================================================*/ #define CHECKWIDTH 4 #define LIGHTCHECK 192 #define DARKCHECK 128 #ifndef OPAQUE #define OPAQUE 255 #endif static void render_preview ( GtkWidget *preview, GPixelRgn *srcrgn ) { guchar *src_row, *dest_row, *src, *dest; gint row, col; gint dwidth, dheight, pwidth, pheight; gint *src_col; gint bpp, alpha, has_alpha, b; guchar check; dwidth = srcrgn->w; dheight = srcrgn->h; if( GTK_PREVIEW(preview)->buffer ) { pwidth = GTK_PREVIEW(preview)->buffer_width; pheight = GTK_PREVIEW(preview)->buffer_height; } else { pwidth = preview->requisition.width; pheight = preview->requisition.height; } bpp = srcrgn->bpp; alpha = bpp; has_alpha = gimp_drawable_has_alpha( srcrgn->drawable->id ); if( has_alpha ) alpha--; /* printf("render_preview: %d %d %d", bpp, alpha, has_alpha); printf(" (%d %d %d %d)\n", dwidth, dheight, pwidth, pheight); */ src_row = g_new ( guchar, dwidth * bpp ); dest_row = g_new ( guchar, pwidth * bpp ); src_col = g_new ( gint, pwidth ); for ( col = 0; col < pwidth; col++ ) src_col[ col ] = ( col * dwidth / pwidth ) * bpp; for ( row = 0; row < pheight; row++ ) { gimp_pixel_rgn_get_row ( srcrgn, src_row, 0, row * dheight / pheight, dwidth ); dest = dest_row; for ( col = 0; col < pwidth; col++ ) { src = &src_row[ src_col[col] ]; if( !has_alpha || src[alpha] == OPAQUE ) { /* no alpha channel or opaque -- simple way */ for ( b = 0; b < alpha; b++ ) dest[b] = src[b]; } else { /* more or less transparent */ if( ( col % (CHECKWIDTH*2) < CHECKWIDTH ) ^ ( row % (CHECKWIDTH*2) < CHECKWIDTH ) ) check = LIGHTCHECK; else check = DARKCHECK; if ( src[alpha] == 0 ) { /* full transparent -- check */ for ( b = 0; b < alpha; b++ ) dest[b] = check; } else { /* middlemost transparent -- mix check and src */ for ( b = 0; b < alpha; b++ ) dest[b] = ( src[b]*src[alpha] + check*(OPAQUE-src[alpha]) ) / OPAQUE; } } dest += alpha; } gtk_preview_draw_row( GTK_PREVIEW( preview ), dest_row, 0, row, pwidth ); } g_free ( src_col ); g_free ( src_row ); g_free ( dest_row ); } /*====================================================================== Preview Rendering Util routine End =======================================================================*/ /* * Drawing CenterFrame * if update & PREVIEW, draw preview * if update & CURSOR, draw cross cursor */ static void flare_center_draw ( FlareCenter *center, gint update ) { if( update & PREVIEW ) { center->cursor = FALSE; DEBUG1("draw-preview\n"); } if( update & CURSOR ) { DEBUG1("draw-cursor %d old=%d,%d cur=%d,%d\n", center->cursor, center->oldx, center->oldy, center->curx, center->cury); gdk_gc_set_function ( center->preview->style->black_gc, GDK_INVERT); if( center->cursor ) { gdk_draw_line ( center->preview->window, center->preview->style->black_gc, center->oldx, 1, center->oldx, center->pheight-1 ); gdk_draw_line ( center->preview->window, center->preview->style->black_gc, 1, center->oldy, center->pwidth-1, center->oldy ); } gdk_draw_line ( center->preview->window, center->preview->style->black_gc, center->curx, 1, center->curx, center->pheight-1 ); gdk_draw_line ( center->preview->window, center->preview->style->black_gc, 1, center->cury, center->pwidth-1, center->cury ); /* current position of cursor is updated */ center->oldx = center->curx; center->oldy = center->cury; center->cursor = TRUE; gdk_gc_set_function ( center->preview->style->black_gc, GDK_COPY); } } /* * CenterFrame entry callback */ static void flare_center_entry_update ( GtkWidget *widget, gpointer data ) { FlareCenter *center; gint *val, new_val; DEBUG1("entry\n"); val = data; new_val = atoi ( gtk_entry_get_text( GTK_ENTRY(widget) ) ); if( *val != new_val ) { *val = new_val; center = gtk_object_get_user_data( GTK_OBJECT(widget) ); DEBUG1("entry:newval in_call=%d\n", center->in_call ); if( !center->in_call ) { flare_center_cursor_update( center ); flare_center_draw ( center, CURSOR ); } } } /* * Update the cross cursor's coordinates accoding to pvals.[xy]center * but not redraw it */ static void flare_center_cursor_update ( FlareCenter *center ) { center->curx = fvals.posx * center->pwidth / center->dwidth; center->cury = fvals.posy * center->pheight / center->dheight; if( center->curx < 0 ) center->curx = 0; else if( center->curx >= center->pwidth ) center->curx = center->pwidth-1; if( center->cury < 0 ) center->cury = 0; else if( center->cury >= center->pheight) center->cury = center->pheight-1; } /* * Handle the expose event on the preview */ static gint flare_center_preview_expose( GtkWidget *widget, GdkEvent *event ) { FlareCenter *center; center = gtk_object_get_user_data( GTK_OBJECT(widget) ); flare_center_draw( center, ALL ); return FALSE; } /* * Handle other events on the preview */ static gint flare_center_preview_events ( GtkWidget *widget, GdkEvent *event ) { FlareCenter *center; GdkEventButton *bevent; GdkEventMotion *mevent; gchar buf[256]; center = gtk_object_get_user_data ( GTK_OBJECT(widget) ); switch (event->type) { case GDK_EXPOSE: break; case GDK_BUTTON_PRESS: bevent = (GdkEventButton *) event; center->curx = bevent->x; center->cury = bevent->y; goto mouse; case GDK_MOTION_NOTIFY: mevent = (GdkEventMotion *) event; if ( !mevent->state ) break; center->curx = mevent->x; center->cury = mevent->y; mouse: flare_center_draw( center, CURSOR ); center->in_call = TRUE; sprintf(buf, "%d", center->curx * center->dwidth / center->pwidth ); gtk_entry_set_text( GTK_ENTRY(center->xentry), buf ); sprintf(buf, "%d", center->cury * center->dheight / center->pheight ); gtk_entry_set_text( GTK_ENTRY(center->yentry), buf ); center->in_call = FALSE; break; default: break; } return FALSE; }