diff options
Diffstat (limited to 'gtk/gtkgamma.c')
| -rw-r--r-- | gtk/gtkgamma.c | 464 |
1 files changed, 464 insertions, 0 deletions
diff --git a/gtk/gtkgamma.c b/gtk/gtkgamma.c new file mode 100644 index 0000000000..1d7abc6fba --- /dev/null +++ b/gtk/gtkgamma.c @@ -0,0 +1,464 @@ +/* GTK - The GIMP Toolkit + * Copyright (C) 1997 David Mosberger + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include <string.h> +#include <stdlib.h> +#include <stdio.h> + +#include "gtkgamma.h" +#include "gtkcurve.h" +#include "gtkdialog.h" +#include "gtkdrawingarea.h" +#include "gtkentry.h" +#include "gtkhbox.h" +#include "gtklabel.h" +#include "gtkmain.h" +#include "gtkpixmap.h" +#include "gtkradiobutton.h" +#include "gtksignal.h" +#include "gtktable.h" +#include "gtkvbox.h" +#include "gtkwindow.h" + +static GtkVBoxClass *parent_class = NULL; + + +/* forward declarations: */ +static void gtk_gamma_curve_class_init (GtkGammaCurveClass *class); +static void gtk_gamma_curve_init (GtkGammaCurve *curve); +static void gtk_gamma_curve_destroy (GtkObject *object); + +enum + { + LINEAR = 0, + SPLINE, + FREE, + GAMMA, + RESET, + NUM_XPMS + }; + +static char *xpm[][27] = + { + /* spline: */ + { + /* width height ncolors chars_per_pixel */ + "16 16 4 1", + /* colors */ + ". c None", + "B c #000000", + "+ c #BC2D2D", + "r c #FF0000", + /* pixels */ + "..............BB", + ".........rrrrrrB", + ".......rr.......", + ".....B+.........", + "....BBB.........", + "....+B..........", + "....r...........", + "...r............", + "...r............", + "..r.............", + "..r.............", + ".r..............", + ".r..............", + ".r..............", + "B+..............", + "BB.............." + }, + /* linear: */ + { + /* width height ncolors chars_per_pixel */ + "16 16 5 1", + /* colors */ + ". c None", /* transparent */ + "B c #000000", + "' c #7F7F7F", + "+ c #824141", + "r c #FF0000", + /* pixels */ + "..............BB", + "..............+B", + "..............r.", + ".............r..", + ".............r..", + "....'B'.....r...", + "....BBB.....r...", + "....+B+....r....", + "....r.r....r....", + "...r...r..r.....", + "...r...r..r.....", + "..r.....rB+.....", + "..r.....BBB.....", + ".r......'B'.....", + "B+..............", + "BB.............." + }, + /* free: */ + { + /* width height ncolors chars_per_pixel */ + "16 16 2 1", + /* colors */ + ". c None", + "r c #FF0000", + /* pixels */ + "................", + "................", + "......r.........", + "......r.........", + ".......r........", + ".......r........", + ".......r........", + "........r.......", + "........r.......", + "........r.......", + ".....r...r.rrrrr", + "....r....r......", + "...r.....r......", + "..r.......r.....", + ".r........r.....", + "r..............." + }, + /* gamma: */ + { + /* width height ncolors chars_per_pixel */ + "16 16 10 1", + /* colors */ + ". c None", + "B c #000000", + "& c #171717", + "# c #2F2F2F", + "X c #464646", + "= c #5E5E5E", + "/ c #757575", + "+ c #8C8C8C", + "- c #A4A4A4", + "` c #BBBBBB", + /* pixels */ + "................", + "................", + "................", + "....B=..+B+.....", + "....X&`./&-.....", + "...../+.XX......", + "......B.B+......", + "......X.X.......", + "......X&+.......", + "......-B........", + "....../=........", + "......#B........", + "......BB........", + "......B#........", + "................", + "................" + }, + /* reset: */ + { + /* width height ncolors chars_per_pixel */ + "16 16 4 1", + /* colors */ + ". c None", + "B c #000000", + "+ c #824141", + "r c #FF0000", + /* pixels */ + "..............BB", + "..............+B", + ".............r..", + "............r...", + "...........r....", + "..........r.....", + ".........r......", + "........r.......", + ".......r........", + "......r.........", + ".....r..........", + "....r...........", + "...r............", + "..r.............", + "B+..............", + "BB.............." + } + }; + +guint +gtk_gamma_curve_get_type (void) +{ + static guint gamma_curve_type = 0; + + if (!gamma_curve_type) + { + GtkTypeInfo gamma_curve_info = + { + "GtkGammaCurve", + sizeof (GtkGammaCurve), + sizeof (GtkGammaCurveClass), + (GtkClassInitFunc) gtk_gamma_curve_class_init, + (GtkObjectInitFunc) gtk_gamma_curve_init, + (GtkArgFunc) NULL, + }; + + gamma_curve_type = + gtk_type_unique (gtk_vbox_get_type (), &gamma_curve_info); + } + return gamma_curve_type; +} + +static void +gtk_gamma_curve_class_init (GtkGammaCurveClass *class) +{ + GtkObjectClass *object_class; + + parent_class = gtk_type_class (gtk_vbox_get_type ()); + + object_class = (GtkObjectClass *) class; + object_class->destroy = gtk_gamma_curve_destroy; +} + +static void +gtk_gamma_curve_init (GtkGammaCurve *curve) +{ + curve->gamma = 1.0; +} + +static void +button_realize_callback (GtkWidget *w) +{ + GtkWidget *pixmap; + GdkBitmap *mask; + GdkPixmap *pm; + int i; + + i = (long) gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex"); + pm = gdk_pixmap_create_from_xpm_d (w->window, &mask, + &w->style->bg[GTK_STATE_NORMAL], xpm[i]); + + pixmap = gtk_pixmap_new (pm, mask); + gtk_container_add (GTK_CONTAINER (w), pixmap); + gtk_widget_show (pixmap); + + gdk_pixmap_destroy (pm); + gdk_pixmap_destroy (mask); /* a bitmap is really just a special pixmap */ +} + +static void +button_toggled_callback (GtkWidget *w, gpointer data) +{ + GtkGammaCurve *c = data; + GtkCurveType type; + int active, i; + + if (!GTK_TOGGLE_BUTTON (w)->active) + return; + + active = (long) gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex"); + + for (i = 0; i < 3; ++i) + if ((i != active) && GTK_TOGGLE_BUTTON (c->button[i])->active) + break; + + if (i < 3) + gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (c->button[i]), FALSE); + + switch (active) + { + case 0: type = GTK_CURVE_TYPE_SPLINE; break; + case 1: type = GTK_CURVE_TYPE_LINEAR; break; + default: type = GTK_CURVE_TYPE_FREE; break; + } + gtk_curve_set_curve_type (GTK_CURVE (c->curve), type); +} + +static void +gamma_cancel_callback (GtkWidget *w, gpointer data) +{ + GtkGammaCurve *c = data; + + gtk_widget_destroy (c->gamma_dialog); + c->gamma_dialog = 0; +} + +static void +gamma_ok_callback (GtkWidget *w, gpointer data) +{ + GtkGammaCurve *c = data; + gchar *start, *end; + gfloat v; + + start = gtk_entry_get_text (GTK_ENTRY (c->gamma_text)); + if (start) + { + v = strtod (start, &end); + if (end > start && v > 0.0) + c->gamma = v; + } + gtk_curve_set_gamma (GTK_CURVE (c->curve), c->gamma); + gamma_cancel_callback (w, data); +} + +static void +button_clicked_callback (GtkWidget *w, gpointer data) +{ + GtkGammaCurve *c = data; + int active; + + active = (long) gtk_object_get_data (GTK_OBJECT (w), "_GtkGammaCurveIndex"); + if (active == 3) + /* set gamma */ + if (c->gamma_dialog) + return; + else + { + GtkWidget *vbox, *hbox, *label, *button; + gchar buf[64]; + + c->gamma_dialog = gtk_dialog_new (); + gtk_window_set_title (GTK_WINDOW (c->gamma_dialog), "Gamma"); + vbox = GTK_DIALOG (c->gamma_dialog)->vbox; + + hbox = gtk_hbox_new (/* homogeneous */ FALSE, 0); + gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 2); + gtk_widget_show (hbox); + + label = gtk_label_new ("Gamma value"); + gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 2); + gtk_widget_show (label); + + sprintf (buf, "%g", c->gamma); + c->gamma_text = gtk_entry_new (); + gtk_entry_set_text (GTK_ENTRY (c->gamma_text), buf); + gtk_box_pack_start (GTK_BOX (hbox), c->gamma_text, TRUE, TRUE, 2); + gtk_widget_show (c->gamma_text); + + /* fill in action area: */ + hbox = GTK_DIALOG (c->gamma_dialog)->action_area; + + button = gtk_button_new_with_label ("OK"); + GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT); + gtk_signal_connect (GTK_OBJECT (button), "clicked", + (GtkSignalFunc) gamma_ok_callback, c); + gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0); + gtk_widget_grab_default (button); + gtk_widget_show (button); + + button = gtk_button_new_with_label ("Cancel"); + gtk_signal_connect (GTK_OBJECT (button), "clicked", + (GtkSignalFunc) gamma_cancel_callback, c); + gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0); + gtk_widget_show (button); + + gtk_widget_show (c->gamma_dialog); + } + else + /* reset */ + gtk_curve_reset (GTK_CURVE (c->curve)); +} + +static void +curve_type_changed_callback (GtkWidget *w, gpointer data) +{ + GtkGammaCurve *c = data; + GtkCurveType new_type; + int active; + + new_type = GTK_CURVE (w)->curve_type; + switch (new_type) + { + case GTK_CURVE_TYPE_SPLINE: active = 0; break; + case GTK_CURVE_TYPE_LINEAR: active = 1; break; + default: active = 2; break; + } + if (!GTK_TOGGLE_BUTTON (c->button[active])->active) + gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (c->button[active]), TRUE); +} + +GtkWidget* +gtk_gamma_curve_new (void) +{ + GtkGammaCurve *c; + GtkWidget *vbox; + int i; + + c = gtk_type_new (gtk_gamma_curve_get_type ()); + + c->table = gtk_table_new (1, 2, FALSE); + gtk_table_set_col_spacings (GTK_TABLE (c->table), 3); + gtk_container_add (GTK_CONTAINER (c), c->table); + + c->curve = gtk_curve_new (); + gtk_signal_connect (GTK_OBJECT (c->curve), "curve_type_changed", + (GtkSignalFunc) curve_type_changed_callback, c); + gtk_table_attach_defaults (GTK_TABLE (c->table), c->curve, 0, 1, 0, 1); + + vbox = gtk_vbox_new (/* homogeneous */ FALSE, /* spacing */ 3); + gtk_table_attach (GTK_TABLE (c->table), vbox, 1, 2, 0, 1, 0, 0, 0, 0); + + /* toggle buttons: */ + for (i = 0; i < 3; ++i) + { + c->button[i] = gtk_toggle_button_new (); + gtk_object_set_data (GTK_OBJECT (c->button[i]), "_GtkGammaCurveIndex", + (gpointer) (long) i); + gtk_container_add (GTK_CONTAINER (vbox), c->button[i]); + gtk_signal_connect (GTK_OBJECT (c->button[i]), "realize", + (GtkSignalFunc) button_realize_callback, 0); + gtk_signal_connect (GTK_OBJECT (c->button[i]), "toggled", + (GtkSignalFunc) button_toggled_callback, c); + gtk_widget_show (c->button[i]); + } + + /* push buttons: */ + for (i = 3; i < 5; ++i) + { + c->button[i] = gtk_button_new (); + gtk_object_set_data (GTK_OBJECT (c->button[i]), "_GtkGammaCurveIndex", + (gpointer) (long) i); + gtk_container_add (GTK_CONTAINER (vbox), c->button[i]); + gtk_signal_connect (GTK_OBJECT (c->button[i]), "realize", + (GtkSignalFunc) button_realize_callback, 0); + gtk_signal_connect (GTK_OBJECT (c->button[i]), "clicked", + (GtkSignalFunc) button_clicked_callback, c); + gtk_widget_show (c->button[i]); + } + + gtk_widget_show (vbox); + gtk_widget_show (c->table); + gtk_widget_show (c->curve); + + return GTK_WIDGET (c); +} + +static void +gtk_gamma_curve_destroy (GtkObject *object) +{ + GtkGammaCurve *c; + + g_return_if_fail (object != NULL); + g_return_if_fail (GTK_IS_GAMMA_CURVE (object)); + + c = GTK_GAMMA_CURVE (object); + + if (c->gamma_dialog) + { + gtk_widget_destroy (c->gamma_dialog); + c->gamma_dialog = 0; + } + + if (GTK_OBJECT_CLASS (parent_class)->destroy) + (* GTK_OBJECT_CLASS (parent_class)->destroy) (object); +} |