Initial revision
This commit is contained in:
Elliot Lee
464
gtk/gtkgamma.c
Normal file
464
gtk/gtkgamma.c
Normal file
@ -0,0 +1,464 @@
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/* GTK - The GIMP Toolkit
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* Copyright (C) 1997 David Mosberger
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "gtkgamma.h"
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#include "gtkcurve.h"
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#include "gtkdialog.h"
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#include "gtkdrawingarea.h"
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#include "gtkentry.h"
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#include "gtkhbox.h"
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#include "gtklabel.h"
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#include "gtkmain.h"
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#include "gtkpixmap.h"
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#include "gtkradiobutton.h"
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#include "gtksignal.h"
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#include "gtktable.h"
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#include "gtkvbox.h"
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#include "gtkwindow.h"
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static GtkVBoxClass *parent_class = NULL;
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/* forward declarations: */
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static void gtk_gamma_curve_class_init (GtkGammaCurveClass *class);
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static void gtk_gamma_curve_init (GtkGammaCurve *curve);
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static void gtk_gamma_curve_destroy (GtkObject *object);
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enum
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{
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LINEAR = 0,
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SPLINE,
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FREE,
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GAMMA,
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RESET,
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NUM_XPMS
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};
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static char *xpm[][27] =
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{
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/* spline: */
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{
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/* width height ncolors chars_per_pixel */
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"16 16 4 1",
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/* colors */
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". c None",
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"B c #000000",
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"+ c #BC2D2D",
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"r c #FF0000",
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/* pixels */
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"..............BB",
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".........rrrrrrB",
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".......rr.......",
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".....B+.........",
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"....BBB.........",
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"....+B..........",
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"....r...........",
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"...r............",
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"...r............",
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"..r.............",
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"..r.............",
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".r..............",
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".r..............",
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".r..............",
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"B+..............",
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"BB.............."
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},
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/* linear: */
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{
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/* width height ncolors chars_per_pixel */
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"16 16 5 1",
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/* colors */
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". c None", /* transparent */
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"B c #000000",
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"' c #7F7F7F",
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"+ c #824141",
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"r c #FF0000",
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/* pixels */
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"..............BB",
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"..............+B",
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"..............r.",
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".............r..",
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".............r..",
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"....'B'.....r...",
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"....BBB.....r...",
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"....+B+....r....",
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"....r.r....r....",
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"...r...r..r.....",
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"...r...r..r.....",
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"..r.....rB+.....",
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"..r.....BBB.....",
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".r......'B'.....",
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"B+..............",
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"BB.............."
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},
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/* free: */
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{
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/* width height ncolors chars_per_pixel */
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"16 16 2 1",
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/* colors */
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". c None",
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"r c #FF0000",
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/* pixels */
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"................",
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"................",
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"......r.........",
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"......r.........",
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".......r........",
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".......r........",
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".......r........",
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"........r.......",
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"........r.......",
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"........r.......",
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".....r...r.rrrrr",
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"....r....r......",
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"...r.....r......",
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"..r.......r.....",
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".r........r.....",
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"r..............."
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},
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/* gamma: */
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{
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/* width height ncolors chars_per_pixel */
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"16 16 10 1",
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/* colors */
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". c None",
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"B c #000000",
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"& c #171717",
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"# c #2F2F2F",
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"X c #464646",
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"= c #5E5E5E",
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"/ c #757575",
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"+ c #8C8C8C",
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"- c #A4A4A4",
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"` c #BBBBBB",
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/* pixels */
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"................",
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"................",
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"................",
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"....B=..+B+.....",
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"....X&`./&-.....",
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"...../+.XX......",
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"......B.B+......",
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"......X.X.......",
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"......X&+.......",
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"......-B........",
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"....../=........",
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"......#B........",
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"......BB........",
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"......B#........",
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"................",
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"................"
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},
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/* reset: */
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{
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/* width height ncolors chars_per_pixel */
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"16 16 4 1",
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/* colors */
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". c None",
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"B c #000000",
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"+ c #824141",
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"r c #FF0000",
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/* pixels */
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"..............BB",
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"..............+B",
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".............r..",
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"............r...",
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"...........r....",
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"..........r.....",
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".........r......",
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"........r.......",
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".......r........",
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"......r.........",
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".....r..........",
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"....r...........",
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"...r............",
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"..r.............",
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"B+..............",
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"BB.............."
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}
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};
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guint
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gtk_gamma_curve_get_type (void)
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{
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static guint gamma_curve_type = 0;
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if (!gamma_curve_type)
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{
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GtkTypeInfo gamma_curve_info =
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{
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"GtkGammaCurve",
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sizeof (GtkGammaCurve),
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sizeof (GtkGammaCurveClass),
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(GtkClassInitFunc) gtk_gamma_curve_class_init,
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(GtkObjectInitFunc) gtk_gamma_curve_init,
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(GtkArgFunc) NULL,
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};
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gamma_curve_type =
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gtk_type_unique (gtk_vbox_get_type (), &gamma_curve_info);
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}
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return gamma_curve_type;
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}
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static void
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gtk_gamma_curve_class_init (GtkGammaCurveClass *class)
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{
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GtkObjectClass *object_class;
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parent_class = gtk_type_class (gtk_vbox_get_type ());
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object_class = (GtkObjectClass *) class;
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object_class->destroy = gtk_gamma_curve_destroy;
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}
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static void
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gtk_gamma_curve_init (GtkGammaCurve *curve)
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{
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curve->gamma = 1.0;
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}
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static void
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button_realize_callback (GtkWidget *w)
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{
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GtkWidget *pixmap;
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GdkBitmap *mask;
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GdkPixmap *pm;
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int i;
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i = (long) gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex");
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pm = gdk_pixmap_create_from_xpm_d (w->window, &mask,
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&w->style->bg[GTK_STATE_NORMAL], xpm[i]);
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pixmap = gtk_pixmap_new (pm, mask);
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gtk_container_add (GTK_CONTAINER (w), pixmap);
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gtk_widget_show (pixmap);
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gdk_pixmap_destroy (pm);
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gdk_pixmap_destroy (mask); /* a bitmap is really just a special pixmap */
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}
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static void
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button_toggled_callback (GtkWidget *w, gpointer data)
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{
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GtkGammaCurve *c = data;
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GtkCurveType type;
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int active, i;
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if (!GTK_TOGGLE_BUTTON (w)->active)
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return;
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active = (long) gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex");
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for (i = 0; i < 3; ++i)
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if ((i != active) && GTK_TOGGLE_BUTTON (c->button[i])->active)
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break;
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if (i < 3)
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gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (c->button[i]), FALSE);
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switch (active)
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{
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case 0: type = GTK_CURVE_TYPE_SPLINE; break;
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case 1: type = GTK_CURVE_TYPE_LINEAR; break;
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default: type = GTK_CURVE_TYPE_FREE; break;
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}
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gtk_curve_set_curve_type (GTK_CURVE (c->curve), type);
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}
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static void
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gamma_cancel_callback (GtkWidget *w, gpointer data)
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{
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GtkGammaCurve *c = data;
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gtk_widget_destroy (c->gamma_dialog);
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c->gamma_dialog = 0;
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}
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static void
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gamma_ok_callback (GtkWidget *w, gpointer data)
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{
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GtkGammaCurve *c = data;
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gchar *start, *end;
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gfloat v;
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start = gtk_entry_get_text (GTK_ENTRY (c->gamma_text));
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if (start)
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{
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v = strtod (start, &end);
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if (end > start && v > 0.0)
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c->gamma = v;
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}
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gtk_curve_set_gamma (GTK_CURVE (c->curve), c->gamma);
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gamma_cancel_callback (w, data);
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}
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static void
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button_clicked_callback (GtkWidget *w, gpointer data)
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{
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GtkGammaCurve *c = data;
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int active;
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active = (long) gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex");
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if (active == 3)
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/* set gamma */
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if (c->gamma_dialog)
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return;
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else
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{
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GtkWidget *vbox, *hbox, *label, *button;
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gchar buf[64];
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c->gamma_dialog = gtk_dialog_new ();
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gtk_window_set_title (GTK_WINDOW (c->gamma_dialog), "Gamma");
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vbox = GTK_DIALOG (c->gamma_dialog)->vbox;
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hbox = gtk_hbox_new (/* homogeneous */ FALSE, 0);
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gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 2);
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gtk_widget_show (hbox);
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label = gtk_label_new ("Gamma value");
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gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 2);
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gtk_widget_show (label);
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sprintf (buf, "%g", c->gamma);
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c->gamma_text = gtk_entry_new ();
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gtk_entry_set_text (GTK_ENTRY (c->gamma_text), buf);
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gtk_box_pack_start (GTK_BOX (hbox), c->gamma_text, TRUE, TRUE, 2);
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gtk_widget_show (c->gamma_text);
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/* fill in action area: */
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hbox = GTK_DIALOG (c->gamma_dialog)->action_area;
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button = gtk_button_new_with_label ("OK");
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GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
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gtk_signal_connect (GTK_OBJECT (button), "clicked",
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(GtkSignalFunc) gamma_ok_callback, c);
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gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
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gtk_widget_grab_default (button);
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gtk_widget_show (button);
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button = gtk_button_new_with_label ("Cancel");
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gtk_signal_connect (GTK_OBJECT (button), "clicked",
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(GtkSignalFunc) gamma_cancel_callback, c);
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gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
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gtk_widget_show (button);
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gtk_widget_show (c->gamma_dialog);
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}
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else
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/* reset */
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gtk_curve_reset (GTK_CURVE (c->curve));
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}
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static void
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curve_type_changed_callback (GtkWidget *w, gpointer data)
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{
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GtkGammaCurve *c = data;
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GtkCurveType new_type;
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int active;
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new_type = GTK_CURVE (w)->curve_type;
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switch (new_type)
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{
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case GTK_CURVE_TYPE_SPLINE: active = 0; break;
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case GTK_CURVE_TYPE_LINEAR: active = 1; break;
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default: active = 2; break;
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}
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if (!GTK_TOGGLE_BUTTON (c->button[active])->active)
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gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (c->button[active]), TRUE);
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}
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GtkWidget*
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gtk_gamma_curve_new (void)
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{
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GtkGammaCurve *c;
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GtkWidget *vbox;
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int i;
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c = gtk_type_new (gtk_gamma_curve_get_type ());
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c->table = gtk_table_new (1, 2, FALSE);
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gtk_table_set_col_spacings (GTK_TABLE (c->table), 3);
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gtk_container_add (GTK_CONTAINER (c), c->table);
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c->curve = gtk_curve_new ();
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gtk_signal_connect (GTK_OBJECT (c->curve), "curve_type_changed",
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(GtkSignalFunc) curve_type_changed_callback, c);
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gtk_table_attach_defaults (GTK_TABLE (c->table), c->curve, 0, 1, 0, 1);
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vbox = gtk_vbox_new (/* homogeneous */ FALSE, /* spacing */ 3);
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gtk_table_attach (GTK_TABLE (c->table), vbox, 1, 2, 0, 1, 0, 0, 0, 0);
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/* toggle buttons: */
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for (i = 0; i < 3; ++i)
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{
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c->button[i] = gtk_toggle_button_new ();
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gtk_object_set_data (GTK_OBJECT (c->button[i]), "_GtkGammaCurveIndex",
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(gpointer) (long) i);
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gtk_container_add (GTK_CONTAINER (vbox), c->button[i]);
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gtk_signal_connect (GTK_OBJECT (c->button[i]), "realize",
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(GtkSignalFunc) button_realize_callback, 0);
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gtk_signal_connect (GTK_OBJECT (c->button[i]), "toggled",
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(GtkSignalFunc) button_toggled_callback, c);
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gtk_widget_show (c->button[i]);
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}
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/* push buttons: */
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for (i = 3; i < 5; ++i)
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{
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c->button[i] = gtk_button_new ();
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gtk_object_set_data (GTK_OBJECT (c->button[i]), "_GtkGammaCurveIndex",
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(gpointer) (long) i);
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gtk_container_add (GTK_CONTAINER (vbox), c->button[i]);
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gtk_signal_connect (GTK_OBJECT (c->button[i]), "realize",
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(GtkSignalFunc) button_realize_callback, 0);
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gtk_signal_connect (GTK_OBJECT (c->button[i]), "clicked",
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(GtkSignalFunc) button_clicked_callback, c);
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gtk_widget_show (c->button[i]);
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}
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gtk_widget_show (vbox);
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gtk_widget_show (c->table);
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gtk_widget_show (c->curve);
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return GTK_WIDGET (c);
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}
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static void
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gtk_gamma_curve_destroy (GtkObject *object)
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{
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GtkGammaCurve *c;
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g_return_if_fail (object != NULL);
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g_return_if_fail (GTK_IS_GAMMA_CURVE (object));
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c = GTK_GAMMA_CURVE (object);
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if (c->gamma_dialog)
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{
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gtk_widget_destroy (c->gamma_dialog);
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c->gamma_dialog = 0;
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}
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if (GTK_OBJECT_CLASS (parent_class)->destroy)
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(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
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}
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Block a user