mirror of https://github.com/GNOME/gimp.git
974 lines
28 KiB
C
974 lines
28 KiB
C
/*
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* This is the FlareFX plug-in for the GIMP 0.99
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* Version 1.05
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*
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* Copyright (C) 1997-1998 Karl-Johan Andersson (t96kja@student.tdb.uu.se)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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/*
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* Please send any comments or suggestions to me,
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* Karl-Johan Andersson (t96kja@student.tdb.uu.se)
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*
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* TODO:
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* - add "streaks" from lightsource
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* - improve the user interface
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* - speed it up
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* - more flare types, more control (color, size, intensity...)
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*
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* Missing something? - please contact me!
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*
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* May 2000 - tim copperfield [timecop@japan.co.jp]
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* preview window now draws a "mini flarefx" to show approximate
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* positioning after final render.
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*
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* Note, the algorithm does not render into an alpha channel.
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* Therefore, changed RGB* to RGB in the capabilities.
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* Someone who actually knows something about graphics should
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* take a look to see why this doesnt render on alpha channel :)
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*
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*/
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#include "config.h"
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#include <string.h>
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#include <gtk/gtk.h>
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#include <libgimp/gimp.h>
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#include <libgimp/gimpui.h>
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#include "libgimp/stdplugins-intl.h"
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/* --- Typedefs --- */
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typedef struct
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{
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gint posx;
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gint posy;
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gboolean preview;
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} FlareValues;
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typedef struct REFLECT
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{
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GimpRGB ccol;
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gfloat size;
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gint xp;
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gint yp;
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gint type;
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} Reflect;
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typedef struct
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{
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GimpDrawable *drawable;
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GimpPreview *preview;
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GtkWidget *coords;
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gboolean cursor_drawn;
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gint curx, cury; /* x,y of cursor in preview */
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gint oldx, oldy;
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} FlareCenter;
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/* --- Declare local functions --- */
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static void query (void);
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static void run (const gchar *name,
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gint nparams,
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const GimpParam *param,
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gint *nreturn_vals,
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GimpParam **return_vals);
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static void FlareFX (GimpDrawable *drawable,
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GimpPreview *preview);
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static gboolean flare_dialog (GimpDrawable *drawable);
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static GtkWidget * flare_center_create (GimpDrawable *drawable,
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GimpPreview *preview);
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static void flare_center_cursor_draw (FlareCenter *center);
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static void flare_center_coords_update (GimpSizeEntry *coords,
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FlareCenter *center);
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static void flare_center_cursor_update (FlareCenter *center);
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static void flare_center_preview_realize (GtkWidget *widget,
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FlareCenter *center);
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static gboolean flare_center_preview_expose (GtkWidget *widget,
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GdkEvent *event,
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FlareCenter *center);
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static gboolean flare_center_preview_events (GtkWidget *widget,
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GdkEvent *event,
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FlareCenter *center);
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static void mcolor (guchar *s,
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gfloat h);
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static void mglow (guchar *s,
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gfloat h);
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static void minner (guchar *s,
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gfloat h);
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static void mouter (guchar *s,
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gfloat h);
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static void mhalo (guchar *s,
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gfloat h);
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static void initref (gint sx,
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gint sy,
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gint width,
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gint height,
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gint matt);
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static void fixpix (guchar *data,
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float procent,
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GimpRGB *colpro);
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static void mrt1 (guchar *s,
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Reflect *ref,
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gint col,
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gint row);
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static void mrt2 (guchar *s,
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Reflect *ref,
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gint col,
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gint row);
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static void mrt3 (guchar *s,
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Reflect *ref,
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gint col,
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gint row);
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static void mrt4 (guchar *s,
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Reflect *ref,
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gint col,
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gint row);
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/* --- Variables --- */
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GimpPlugInInfo 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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static FlareValues fvals =
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{
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128, 128, /* posx, posy */
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TRUE /* preview */
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};
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static gfloat scolor, sglow, sinner, souter; /* size */
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static gfloat shalo;
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static gint xs, ys;
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static gint numref;
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static GimpRGB color, glow, inner, outer, halo;
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static Reflect ref1[19];
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static gboolean show_cursor = TRUE;
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/* --- Functions --- */
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MAIN ()
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static void
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query (void)
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{
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static GimpParamDef args[] =
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{
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{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
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{ GIMP_PDB_IMAGE, "image", "Input image (unused)" },
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{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
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{ GIMP_PDB_INT32, "posx", "X-position" },
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{ GIMP_PDB_INT32, "posy", "Y-position" }
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};
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gimp_install_procedure ("plug_in_flarefx",
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"Add lens flare effects",
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"Adds a lens flare effects. Makes your image look "
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"like it was snapped with a cheap camera with a lot "
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"of lens :)",
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"Karl-Johan Andersson", /* Author */
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"Karl-Johan Andersson", /* Copyright */
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"May 2000",
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N_("_FlareFX..."),
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"RGB*",
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GIMP_PLUGIN,
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G_N_ELEMENTS (args), 0,
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args, NULL);
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gimp_plugin_menu_register ("plug_in_flarefx",
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"<Image>/Filters/Light Effects");
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}
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static void
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run (const gchar *name,
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gint nparams,
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const GimpParam *param,
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gint *nreturn_vals,
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GimpParam **return_vals)
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{
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static GimpParam values[1];
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GimpDrawable *drawable;
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GimpRunMode run_mode;
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GimpPDBStatusType status = GIMP_PDB_SUCCESS;
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run_mode = param[0].data.d_int32;
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INIT_I18N ();
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*nreturn_vals = 1;
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*return_vals = values;
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values[0].type = GIMP_PDB_STATUS;
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values[0].data.d_status = status;
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/* Get the specified drawable */
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drawable = gimp_drawable_get (param[2].data.d_drawable);
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switch (run_mode)
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{
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case GIMP_RUN_INTERACTIVE:
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/* Possibly retrieve data */
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gimp_get_data ("plug_in_flarefx", &fvals);
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/* First acquire information with a dialog */
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if (! flare_dialog (drawable))
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{
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gimp_drawable_detach (drawable);
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return;
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}
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break;
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case GIMP_RUN_NONINTERACTIVE:
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/* Make sure all the arguments are there! */
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if (nparams != 5)
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status = GIMP_PDB_CALLING_ERROR;
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if (status == GIMP_PDB_SUCCESS)
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{
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fvals.posx = (gint) param[3].data.d_int32;
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fvals.posy = (gint) param[4].data.d_int32;
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}
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break;
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case GIMP_RUN_WITH_LAST_VALS:
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/* Possibly retrieve data */
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gimp_get_data ("plug_in_flarefx", &fvals);
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break;
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default:
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break;
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}
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if (status == GIMP_PDB_SUCCESS)
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{
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/* Make sure that the drawable is gray or RGB color */
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if (gimp_drawable_is_rgb (drawable->drawable_id) ||
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gimp_drawable_is_gray (drawable->drawable_id))
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{
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gimp_progress_init (_("Render Flare..."));
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gimp_tile_cache_ntiles (2 *
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(drawable->width / gimp_tile_width () + 1));
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FlareFX (drawable, NULL);
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if (run_mode != GIMP_RUN_NONINTERACTIVE)
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gimp_displays_flush ();
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/* Store data */
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if (run_mode == GIMP_RUN_INTERACTIVE)
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gimp_set_data ("plug_in_flarefx", &fvals, sizeof (FlareValues));
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}
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else
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{
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/* gimp_message ("FlareFX: cannot operate on indexed color images"); */
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status = GIMP_PDB_EXECUTION_ERROR;
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}
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}
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values[0].data.d_status = status;
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gimp_drawable_detach (drawable);
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}
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static gboolean
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flare_dialog (GimpDrawable *drawable)
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{
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GtkWidget *dialog;
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GtkWidget *main_vbox;
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GtkWidget *preview;
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GtkWidget *frame;
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gboolean run;
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gimp_ui_init ("flarefx", TRUE);
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dialog = gimp_dialog_new (_("FlareFX"), "flarefx",
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NULL, 0,
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gimp_standard_help_func, "plug-in-flarefx",
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GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
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GTK_STOCK_OK, GTK_RESPONSE_OK,
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NULL);
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gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
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GTK_RESPONSE_OK,
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GTK_RESPONSE_CANCEL,
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-1);
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main_vbox = gtk_vbox_new (FALSE, 12);
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gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
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gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), main_vbox);
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gtk_widget_show (main_vbox);
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preview = gimp_aspect_preview_new (drawable, &fvals.preview);
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gtk_widget_add_events (GIMP_PREVIEW (preview)->area,
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GDK_POINTER_MOTION_MASK);
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gtk_box_pack_start (GTK_BOX (main_vbox), preview, TRUE, TRUE, 0);
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gtk_widget_show (preview);
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g_signal_connect_swapped (preview, "invalidated",
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G_CALLBACK (FlareFX),
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drawable);
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frame = flare_center_create (drawable, GIMP_PREVIEW (preview));
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gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
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gtk_widget_show (frame);
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gtk_widget_show (dialog);
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run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
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gtk_widget_destroy (dialog);
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return run;
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}
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/* --- Filter functions --- */
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static void
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FlareFX (GimpDrawable *drawable,
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GimpPreview *preview)
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{
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GimpPixelRgn srcPR, destPR;
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gint width, height;
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gint bytes;
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guchar *cur_row, *s;
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guchar *src = NULL;
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guchar *dest = NULL;
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gint row, col, i;
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gint x1, y1, x2, y2;
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gint matt;
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gfloat hyp;
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bytes = drawable->bpp;
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if (preview)
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{
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gimp_preview_get_size (preview, &width, &height);
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src = gimp_drawable_get_thumbnail_data (drawable->drawable_id,
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&width, &height, &bytes);
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xs = (gdouble)fvals.posx * width / drawable->width;
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ys = (gdouble)fvals.posy * height / drawable->height;
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x1 = y1 = 0;
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x2 = width;
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y2 = height;
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dest = g_new (guchar, bytes * width * height);
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}
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else
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{
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gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
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width = drawable->width;
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height = drawable->height;
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xs = fvals.posx; /* set x,y of flare center */
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ys = fvals.posy;
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/* initialize the pixel regions */
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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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}
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matt = width;
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cur_row = g_new (guchar, (x2 - x1) * bytes);
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scolor = (gfloat) matt * 0.0375;
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sglow = (gfloat) matt * 0.078125;
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sinner = (gfloat) matt * 0.1796875;
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souter = (gfloat) matt * 0.3359375;
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shalo = (gfloat) matt * 0.084375;
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color.r = 239.0/255.0; color.g = 239.0/255.0; color.b = 239.0/255.0;
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glow.r = 245.0/255.0; glow.g = 245.0/255.0; glow.b = 245.0/255.0;
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inner.r = 255.0/255.0; inner.g = 38.0/255.0; inner.b = 43.0/255.0;
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outer.r = 69.0/255.0; outer.g = 59.0/255.0; outer.b = 64.0/255.0;
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halo.r = 80.0/255.0; halo.g = 15.0/255.0; halo.b = 4.0/255.0;
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initref (xs, ys, width, height, matt);
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/* Loop through the rows */
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for (row = y1; row < y2; row++) /* y-coord */
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{
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if (preview)
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memcpy (cur_row, src + row * width * bytes, width * bytes);
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else
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gimp_pixel_rgn_get_row (&srcPR, cur_row, x1, row, x2-x1);
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s = cur_row;
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for (col = x1; col < x2; col++) /* x-coord */
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{
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hyp = hypot (col-xs, row-ys);
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mcolor (s, hyp); /* make color */
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mglow (s, hyp); /* make glow */
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minner (s, hyp); /* make inner */
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mouter (s, hyp); /* make outer */
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mhalo (s, hyp); /* make halo */
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for (i = 0; i < numref; i++)
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{
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switch (ref1[i].type)
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{
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case 1:
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mrt1 (s, ref1 + i, col, row);
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break;
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case 2:
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mrt2 (s, ref1 + i, col, row);
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break;
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case 3:
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mrt3 (s, ref1 + i, col, row);
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break;
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case 4:
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mrt4 (s, ref1 + i, col, row);
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break;
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}
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}
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s += bytes;
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}
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if (preview)
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{
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memcpy (dest + row * width * bytes, cur_row, width * bytes);
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}
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else
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{
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/* store the dest */
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gimp_pixel_rgn_set_row (&destPR, cur_row, x1, row, (x2 - x1));
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}
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if ((row % 5) == 0 && !preview)
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gimp_progress_update ((double) row / (double) (y2 - y1));
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}
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if (preview)
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{
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gimp_preview_draw_buffer (preview, dest, width * bytes);
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g_free (src);
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g_free (dest);
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}
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else
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{
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/* update the textured region */
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gimp_drawable_flush (drawable);
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gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
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gimp_drawable_update (drawable->drawable_id, x1, y1, (x2 - x1), (y2 - y1));
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}
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g_free (cur_row);
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}
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static void
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mcolor (guchar *s,
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gfloat h)
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{
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gfloat procent;
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procent = scolor - h;
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procent /= scolor;
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if (procent > 0.0)
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{
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procent *= procent;
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fixpix (s, procent, &color);
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}
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}
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static void
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mglow (guchar *s,
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gfloat h)
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{
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gfloat procent;
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procent = sglow - h;
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procent /= sglow;
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if (procent > 0.0)
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{
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procent *= procent;
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fixpix (s, procent, &glow);
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}
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}
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static void
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minner (guchar *s,
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gfloat h)
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{
|
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gfloat procent;
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|
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procent = sinner - h;
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procent /= sinner;
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if (procent > 0.0)
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{
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procent *= procent;
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fixpix (s, procent, &inner);
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}
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}
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|
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static void
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mouter (guchar *s,
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gfloat h)
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{
|
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gfloat procent;
|
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|
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procent = souter - h;
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procent /= souter;
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|
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if (procent > 0.0)
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fixpix (s, procent, &outer);
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}
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|
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static void
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mhalo (guchar *s,
|
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gfloat h)
|
|
{
|
|
gfloat procent;
|
|
|
|
procent = h - shalo;
|
|
procent /= (shalo * 0.07);
|
|
procent = fabs (procent);
|
|
|
|
if (procent < 1.0)
|
|
fixpix (s, 1.0 - procent, &halo);
|
|
}
|
|
|
|
static void
|
|
fixpix (guchar *data,
|
|
float procent,
|
|
GimpRGB *colpro)
|
|
{
|
|
data[0] += (255 - data[0]) * procent * colpro->r;
|
|
data[1] += (255 - data[1]) * procent * colpro->g;
|
|
data[2] += (255 - data[2]) * procent * colpro->b;
|
|
}
|
|
|
|
static 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;
|
|
}
|
|
|
|
static void
|
|
mrt1 (guchar *s,
|
|
Reflect *ref,
|
|
gint col,
|
|
gint row)
|
|
{
|
|
gfloat procent;
|
|
|
|
procent = ref->size - hypot (ref->xp - col, ref->yp - row);
|
|
procent /= ref->size;
|
|
|
|
if (procent > 0.0)
|
|
{
|
|
procent *= procent;
|
|
fixpix (s, procent, &ref->ccol);
|
|
}
|
|
}
|
|
|
|
static void
|
|
mrt2 (guchar *s,
|
|
Reflect *ref,
|
|
gint col,
|
|
gint row)
|
|
{
|
|
gfloat procent;
|
|
|
|
procent = ref->size - hypot (ref->xp - col, ref->yp - row);
|
|
procent /= (ref->size * 0.15);
|
|
|
|
if (procent > 0.0)
|
|
{
|
|
if (procent > 1.0)
|
|
procent = 1.0;
|
|
|
|
fixpix (s, procent, &ref->ccol);
|
|
}
|
|
}
|
|
|
|
static void
|
|
mrt3 (guchar *s,
|
|
Reflect *ref,
|
|
gint col,
|
|
gint row)
|
|
{
|
|
gfloat procent;
|
|
|
|
procent = ref->size - hypot (ref->xp - col, ref->yp - row);
|
|
procent /= (ref->size * 0.12);
|
|
|
|
if (procent > 0.0)
|
|
{
|
|
if (procent > 1.0)
|
|
procent = 1.0 - (procent * 0.12);
|
|
|
|
fixpix (s, procent, &ref->ccol);
|
|
}
|
|
}
|
|
|
|
static void
|
|
mrt4 (guchar *s,
|
|
Reflect *ref,
|
|
gint col,
|
|
gint row)
|
|
{
|
|
gfloat procent;
|
|
|
|
procent = hypot (ref->xp - col, ref->yp - row) - ref->size;
|
|
procent /= (ref->size*0.04);
|
|
procent = fabs (procent);
|
|
|
|
if (procent < 1.0)
|
|
fixpix (s, 1.0 - procent, &ref->ccol);
|
|
}
|
|
|
|
/*=================================================================
|
|
CenterFrame
|
|
|
|
A frame that contains one preview and 2 entrys, used for positioning
|
|
of the center of Flare.
|
|
This whole thing is just too ugly, but I don't want to dig into it
|
|
- tim
|
|
==================================================================*/
|
|
|
|
/*
|
|
* Create new CenterFrame, and return it (GtkFrame).
|
|
*/
|
|
|
|
static GtkWidget *
|
|
flare_center_create (GimpDrawable *drawable,
|
|
GimpPreview *preview)
|
|
{
|
|
FlareCenter *center;
|
|
GtkWidget *frame;
|
|
GtkWidget *check;
|
|
gint32 image_ID;
|
|
gdouble res_x;
|
|
gdouble res_y;
|
|
|
|
center = g_new0 (FlareCenter, 1);
|
|
|
|
center->drawable = drawable;
|
|
center->preview = preview;
|
|
center->cursor_drawn = FALSE;
|
|
center->curx = 0;
|
|
center->cury = 0;
|
|
center->oldx = 0;
|
|
center->oldy = 0;
|
|
|
|
frame = gimp_frame_new (_("Center of Flare Effect"));
|
|
|
|
g_object_set_data (G_OBJECT (frame), "center", center);
|
|
|
|
g_signal_connect_swapped (frame, "destroy",
|
|
G_CALLBACK (g_free),
|
|
center);
|
|
|
|
image_ID = gimp_drawable_get_image (drawable->drawable_id);
|
|
gimp_image_get_resolution (image_ID, &res_x, &res_y);
|
|
|
|
center->coords = gimp_coordinates_new (GIMP_UNIT_PIXEL, "%p", TRUE, TRUE, -1,
|
|
GIMP_SIZE_ENTRY_UPDATE_SIZE,
|
|
FALSE, FALSE,
|
|
|
|
_("_X:"), fvals.posx, res_x,
|
|
- (gdouble) drawable->width,
|
|
2 * drawable->width,
|
|
0, drawable->width,
|
|
|
|
_("_Y:"), fvals.posy, res_y,
|
|
- (gdouble) drawable->height,
|
|
2 * drawable->height,
|
|
0, drawable->height);
|
|
|
|
gtk_table_set_row_spacing (GTK_TABLE (center->coords), 1, 12);
|
|
gtk_container_add (GTK_CONTAINER (frame), center->coords);
|
|
gtk_widget_show (center->coords);
|
|
|
|
g_signal_connect (center->coords, "value_changed",
|
|
G_CALLBACK (flare_center_coords_update),
|
|
center);
|
|
g_signal_connect (center->coords, "refval_changed",
|
|
G_CALLBACK (flare_center_coords_update),
|
|
center);
|
|
|
|
check = gtk_check_button_new_with_mnemonic (_("_Show cursor"));
|
|
gtk_table_attach (GTK_TABLE (center->coords), check, 0, 5, 2, 3,
|
|
GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
|
|
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check), show_cursor);
|
|
gtk_widget_show (check);
|
|
|
|
g_signal_connect (check, "toggled",
|
|
G_CALLBACK (gimp_toggle_button_update),
|
|
&show_cursor);
|
|
g_signal_connect_swapped (check, "toggled",
|
|
G_CALLBACK (gimp_preview_invalidate),
|
|
preview);
|
|
|
|
g_signal_connect (preview->area, "realize",
|
|
G_CALLBACK (flare_center_preview_realize),
|
|
center);
|
|
g_signal_connect_after (preview->area, "expose_event",
|
|
G_CALLBACK (flare_center_preview_expose),
|
|
center);
|
|
g_signal_connect (preview->area, "event",
|
|
G_CALLBACK (flare_center_preview_events),
|
|
center);
|
|
|
|
flare_center_cursor_update (center);
|
|
|
|
return frame;
|
|
}
|
|
|
|
/*
|
|
* Drawing CenterFrame
|
|
* if update & PREVIEW, draw preview
|
|
* if update & CURSOR, draw cross cursor
|
|
*/
|
|
|
|
static void
|
|
flare_center_cursor_draw (FlareCenter *center)
|
|
{
|
|
GtkWidget *prvw = center->preview->area;
|
|
gint width, height;
|
|
|
|
gimp_preview_get_size (center->preview, &width, &height);
|
|
|
|
gdk_gc_set_function (prvw->style->black_gc, GDK_INVERT);
|
|
|
|
if (show_cursor)
|
|
{
|
|
if (center->cursor_drawn)
|
|
{
|
|
gdk_draw_line (prvw->window,
|
|
prvw->style->black_gc,
|
|
center->oldx, 1,
|
|
center->oldx,
|
|
height - 1);
|
|
gdk_draw_line (prvw->window,
|
|
prvw->style->black_gc,
|
|
1, center->oldy,
|
|
width - 1,
|
|
center->oldy);
|
|
}
|
|
|
|
gdk_draw_line (prvw->window,
|
|
prvw->style->black_gc,
|
|
center->curx, 1,
|
|
center->curx,
|
|
height - 1);
|
|
gdk_draw_line (prvw->window,
|
|
prvw->style->black_gc,
|
|
1, center->cury,
|
|
width - 1,
|
|
center->cury);
|
|
}
|
|
|
|
/* current position of cursor is updated */
|
|
center->oldx = center->curx;
|
|
center->oldy = center->cury;
|
|
center->cursor_drawn = TRUE;
|
|
|
|
gdk_gc_set_function (prvw->style->black_gc, GDK_COPY);
|
|
}
|
|
|
|
|
|
/*
|
|
* CenterFrame entry callback
|
|
*/
|
|
static void
|
|
flare_center_coords_update (GimpSizeEntry *coords,
|
|
FlareCenter *center)
|
|
{
|
|
fvals.posx = gimp_size_entry_get_refval (coords, 0);
|
|
fvals.posy = gimp_size_entry_get_refval (coords, 1);
|
|
|
|
flare_center_cursor_update (center);
|
|
flare_center_cursor_draw (center);
|
|
|
|
gimp_preview_invalidate (center->preview);
|
|
}
|
|
|
|
/*
|
|
* Update the cross cursor's coordinates accoding to pvals.[xy]center
|
|
* but not redraw it
|
|
*/
|
|
static void
|
|
flare_center_cursor_update (FlareCenter *center)
|
|
{
|
|
gint width, height;
|
|
|
|
gimp_preview_get_size (center->preview, &width, &height);
|
|
|
|
center->curx = fvals.posx * width / center->drawable->width;
|
|
center->cury = fvals.posy * height / center->drawable->height;
|
|
|
|
center->curx = CLAMP (center->curx, 0, width - 1);
|
|
center->cury = CLAMP (center->cury, 0, height - 1);
|
|
}
|
|
|
|
/*
|
|
* Set the preview area's cursor on realize
|
|
*/
|
|
static void
|
|
flare_center_preview_realize (GtkWidget *widget,
|
|
FlareCenter *center)
|
|
{
|
|
GdkDisplay *display = gtk_widget_get_display (widget);
|
|
GdkCursor *cursor = gdk_cursor_new_for_display (display, GDK_CROSSHAIR);
|
|
|
|
gimp_preview_set_default_cursor (center->preview, cursor);
|
|
gdk_cursor_unref (cursor);
|
|
}
|
|
|
|
/*
|
|
* Handle the expose event on the preview
|
|
*/
|
|
static gboolean
|
|
flare_center_preview_expose (GtkWidget *widget,
|
|
GdkEvent *event,
|
|
FlareCenter *center)
|
|
{
|
|
center->cursor_drawn = FALSE;
|
|
|
|
flare_center_cursor_update (center);
|
|
flare_center_cursor_draw (center);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* Handle other events on the preview
|
|
*/
|
|
static gboolean
|
|
flare_center_preview_events (GtkWidget *widget,
|
|
GdkEvent *event,
|
|
FlareCenter *center)
|
|
{
|
|
gint width, height;
|
|
|
|
gimp_preview_get_size (center->preview, &width, &height);
|
|
|
|
switch (event->type)
|
|
{
|
|
case GDK_MOTION_NOTIFY:
|
|
if (! (((GdkEventMotion *) event)->state & GDK_BUTTON1_MASK))
|
|
break;
|
|
|
|
case GDK_BUTTON_PRESS:
|
|
gtk_widget_get_pointer (widget, ¢er->curx, ¢er->cury);
|
|
|
|
flare_center_cursor_draw (center);
|
|
|
|
g_signal_handlers_block_by_func (center->coords,
|
|
flare_center_coords_update,
|
|
center);
|
|
|
|
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (center->coords), 0,
|
|
center->curx * center->drawable->width /
|
|
width);
|
|
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (center->coords), 1,
|
|
center->cury * center->drawable->height /
|
|
height);
|
|
|
|
g_signal_handlers_unblock_by_func (center->coords,
|
|
flare_center_coords_update,
|
|
center);
|
|
|
|
flare_center_coords_update (GIMP_SIZE_ENTRY (center->coords), center);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|