mirror of https://github.com/GNOME/gimp.git
481 lines
13 KiB
C
481 lines
13 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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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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#include "appenv.h"
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#include "brightness_contrast.h"
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#include "drawable.h"
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#include "gimplut.h"
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#include "gimpui.h"
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#include "gdisplay.h"
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#include "image_map.h"
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#include "lut_funcs.h"
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#include "config.h"
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#include "libgimp/gimpintl.h"
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#define SLIDER_WIDTH 200
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#define BRIGHTNESS 0x1
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#define CONTRAST 0x2
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#define ALL (BRIGHTNESS | CONTRAST)
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/* the brightness-contrast structures */
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typedef struct _BrightnessContrast BrightnessContrast;
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struct _BrightnessContrast
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{
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gint x, y; /* coords for last mouse click */
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};
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typedef struct _BrightnessContrastDialog BrightnessContrastDialog;
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struct _BrightnessContrastDialog
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{
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GtkWidget *shell;
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GtkWidget *gimage_name;
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GtkAdjustment *brightness_data;
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GtkAdjustment *contrast_data;
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GimpDrawable *drawable;
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ImageMap image_map;
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gdouble brightness;
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gdouble contrast;
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gboolean preview;
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GimpLut *lut;
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};
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/* the brightness-contrast tool options */
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static ToolOptions *brightness_contrast_options = NULL;
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/* the brightness-contrast dialog */
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static BrightnessContrastDialog *brightness_contrast_dialog = NULL;
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/* brightness contrast action functions */
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static void brightness_contrast_control (Tool *, ToolAction, gpointer);
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static BrightnessContrastDialog * brightness_contrast_dialog_new (void);
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static void brightness_contrast_update (BrightnessContrastDialog *,
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gint);
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static void brightness_contrast_preview (BrightnessContrastDialog *);
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static void brightness_contrast_reset_callback (GtkWidget *, gpointer);
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static void brightness_contrast_ok_callback (GtkWidget *, gpointer);
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static void brightness_contrast_cancel_callback (GtkWidget *, gpointer);
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static void brightness_contrast_preview_update (GtkWidget *, gpointer);
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static void brightness_contrast_brightness_adjustment_update (GtkAdjustment *,
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gpointer);
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static void brightness_contrast_contrast_adjustment_update (GtkAdjustment *,
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gpointer);
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/* brightness-contrast select action functions */
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static void
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brightness_contrast_control (Tool *tool,
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ToolAction action,
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gpointer gdisp_ptr)
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{
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switch (action)
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{
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case PAUSE:
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break;
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case RESUME:
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break;
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case HALT:
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if (brightness_contrast_dialog)
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brightness_contrast_cancel_callback (NULL, (gpointer) brightness_contrast_dialog);
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break;
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default:
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break;
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}
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}
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Tool *
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tools_new_brightness_contrast (void)
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{
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Tool * tool;
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BrightnessContrast * private;
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/* The tool options */
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if (!brightness_contrast_options)
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{
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brightness_contrast_options =
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tool_options_new (_("Brightness-Contrast"));
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tools_register (BRIGHTNESS_CONTRAST, brightness_contrast_options);
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}
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tool = tools_new_tool (BRIGHTNESS_CONTRAST);
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private = g_new (BrightnessContrast, 1);
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tool->scroll_lock = TRUE; /* Disallow scrolling */
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tool->preserve = FALSE; /* Don't preserve on drawable change */
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tool->private = (void *) private;
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tool->control_func = brightness_contrast_control;
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return tool;
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}
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void
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tools_free_brightness_contrast (Tool *tool)
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{
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BrightnessContrast * bc;
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bc = (BrightnessContrast *) tool->private;
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/* Close the brightness-contrast dialog */
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if (brightness_contrast_dialog)
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brightness_contrast_cancel_callback (NULL, (gpointer) brightness_contrast_dialog);
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g_free (bc);
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}
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void
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brightness_contrast_initialize (GDisplay *gdisp)
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{
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if (drawable_indexed (gimage_active_drawable (gdisp->gimage)))
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{
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g_message (_("Brightness-Contrast does not operate on indexed drawables."));
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return;
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}
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/* The brightness-contrast dialog */
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if (!brightness_contrast_dialog)
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brightness_contrast_dialog = brightness_contrast_dialog_new ();
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else
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if (!GTK_WIDGET_VISIBLE (brightness_contrast_dialog->shell))
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gtk_widget_show (brightness_contrast_dialog->shell);
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brightness_contrast_dialog->brightness = 0.0;
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brightness_contrast_dialog->contrast = 0.0;
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brightness_contrast_dialog->drawable = gimage_active_drawable (gdisp->gimage);
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brightness_contrast_dialog->image_map =
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image_map_create (gdisp, brightness_contrast_dialog->drawable);
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brightness_contrast_update (brightness_contrast_dialog, ALL);
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}
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/********************************/
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/* Brightness Contrast dialog */
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/********************************/
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static BrightnessContrastDialog *
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brightness_contrast_dialog_new (void)
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{
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BrightnessContrastDialog *bcd;
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GtkWidget *vbox;
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GtkWidget *hbox;
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GtkWidget *table;
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GtkWidget *label;
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GtkWidget *abox;
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GtkWidget *spinbutton;
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GtkWidget *slider;
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GtkWidget *toggle;
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GtkObject *data;
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bcd = g_new (BrightnessContrastDialog, 1);
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bcd->preview = TRUE;
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bcd->lut = gimp_lut_new ();
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/* The shell and main vbox */
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bcd->shell =
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gimp_dialog_new (_("Brightness-Contrast"), "brightness_contrast",
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tools_help_func, NULL,
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GTK_WIN_POS_NONE,
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FALSE, TRUE, FALSE,
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_("OK"), brightness_contrast_ok_callback,
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bcd, NULL, NULL, TRUE, FALSE,
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_("Reset"), brightness_contrast_reset_callback,
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bcd, NULL, NULL, TRUE, FALSE,
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_("Cancel"), brightness_contrast_cancel_callback,
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bcd, NULL, NULL, FALSE, TRUE,
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NULL);
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vbox = gtk_vbox_new (FALSE, 4);
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gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
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gtk_container_add (GTK_CONTAINER (GTK_DIALOG (bcd->shell)->vbox), vbox);
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/* The table containing sliders */
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table = gtk_table_new (2, 3, FALSE);
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gtk_table_set_col_spacings (GTK_TABLE (table), 4);
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gtk_table_set_row_spacings (GTK_TABLE (table), 2);
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gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
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/* Create the brightness scale widget */
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label = gtk_label_new (_("Brightness:"));
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gtk_misc_set_alignment (GTK_MISC (label), 1.0, 1.0);
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gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
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data = gtk_adjustment_new (0, -127, 127.0, 1.0, 10.0, 0.0);
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bcd->brightness_data = GTK_ADJUSTMENT (data);
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slider = gtk_hscale_new (GTK_ADJUSTMENT (data));
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gtk_widget_set_usize (slider, SLIDER_WIDTH, -1);
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gtk_scale_set_digits (GTK_SCALE (slider), 0);
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gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
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gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
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gtk_table_attach_defaults (GTK_TABLE (table), slider, 1, 2, 0, 1);
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abox = gtk_vbox_new (FALSE, 0);
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spinbutton = gtk_spin_button_new (bcd->brightness_data, 1.0, 0);
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gtk_widget_set_usize (spinbutton, 75, -1);
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gtk_box_pack_end (GTK_BOX (abox), spinbutton, FALSE, FALSE, 0);
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gtk_table_attach (GTK_TABLE (table), abox, 2, 3, 0, 1,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
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gtk_signal_connect (GTK_OBJECT (data), "value_changed",
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GTK_SIGNAL_FUNC (brightness_contrast_brightness_adjustment_update),
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bcd);
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gtk_widget_show (label);
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gtk_widget_show (slider);
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gtk_widget_show (spinbutton);
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gtk_widget_show (abox);
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/* Create the contrast scale widget */
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label = gtk_label_new (_("Contrast:"));
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gtk_misc_set_alignment (GTK_MISC (label), 1.0, 1.0);
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gtk_table_attach (GTK_TABLE (table), label, 0, 1, 1, 2,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
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data = gtk_adjustment_new (0, -127.0, 127.0, 1.0, 10.0, 0.0);
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bcd->contrast_data = GTK_ADJUSTMENT (data);
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slider = gtk_hscale_new (GTK_ADJUSTMENT (data));
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gtk_widget_set_usize (slider, SLIDER_WIDTH, -1);
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gtk_scale_set_digits (GTK_SCALE (slider), 0);
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gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
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gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
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gtk_table_attach_defaults (GTK_TABLE (table), slider, 1, 2, 1, 2);
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abox = gtk_vbox_new (FALSE, 0);
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spinbutton = gtk_spin_button_new (bcd->contrast_data, 1.0, 0);
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gtk_widget_set_usize (spinbutton, 75, -1);
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gtk_box_pack_end (GTK_BOX (abox), spinbutton, FALSE, FALSE, 0);
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gtk_table_attach (GTK_TABLE (table), abox, 2, 3, 1, 2,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
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gtk_signal_connect (GTK_OBJECT (data), "value_changed",
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GTK_SIGNAL_FUNC (brightness_contrast_contrast_adjustment_update),
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bcd);
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gtk_widget_show (label);
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gtk_widget_show (slider);
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gtk_widget_show (spinbutton);
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gtk_widget_show (abox);
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/* Horizontal box for preview toggle button */
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hbox = gtk_hbox_new (FALSE, 4);
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gtk_box_pack_end (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
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/* The preview toggle */
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toggle = gtk_check_button_new_with_label (_("Preview"));
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), bcd->preview);
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gtk_box_pack_end (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
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gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
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GTK_SIGNAL_FUNC (brightness_contrast_preview_update),
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bcd);
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gtk_widget_show (toggle);
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gtk_widget_show (hbox);
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gtk_widget_show (table);
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gtk_widget_show (vbox);
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gtk_widget_show (bcd->shell);
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return bcd;
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}
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static void
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brightness_contrast_update (BrightnessContrastDialog *bcd,
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gint update)
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{
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if (update & BRIGHTNESS)
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{
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gtk_adjustment_set_value (bcd->brightness_data, bcd->brightness);
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}
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if (update & CONTRAST)
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{
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gtk_adjustment_set_value (bcd->contrast_data, bcd->contrast);
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}
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}
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static void
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brightness_contrast_preview (BrightnessContrastDialog *bcd)
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{
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if (!bcd->image_map)
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{
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g_message ("brightness_contrast_preview(): No image map");
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return;
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}
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active_tool->preserve = TRUE;
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brightness_contrast_lut_setup (bcd->lut, bcd->brightness / 255.0,
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bcd->contrast / 127.0,
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gimp_drawable_bytes (bcd->drawable));
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image_map_apply (bcd->image_map, (ImageMapApplyFunc) gimp_lut_process_2,
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(void *) bcd->lut);
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active_tool->preserve = FALSE;
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}
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static void
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brightness_contrast_reset_callback (GtkWidget *widget,
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gpointer data)
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{
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BrightnessContrastDialog *bcd;
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bcd = (BrightnessContrastDialog *) data;
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bcd->brightness = 0.0;
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bcd->contrast = 0.0;
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brightness_contrast_update (bcd, ALL);
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if (bcd->preview)
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brightness_contrast_preview (bcd);
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}
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static void
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brightness_contrast_ok_callback (GtkWidget *widget,
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gpointer data)
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{
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BrightnessContrastDialog *bcd;
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bcd = (BrightnessContrastDialog *) data;
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gimp_dialog_hide (bcd->shell);
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active_tool->preserve = TRUE;
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if (!bcd->preview)
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{
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brightness_contrast_lut_setup (bcd->lut, bcd->brightness / 255.0,
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bcd->contrast / 127.0,
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gimp_drawable_bytes (bcd->drawable));
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image_map_apply (bcd->image_map, (ImageMapApplyFunc) gimp_lut_process_2,
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(void *) bcd->lut);
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}
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if (bcd->image_map)
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image_map_commit (bcd->image_map);
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active_tool->preserve = FALSE;
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bcd->image_map = NULL;
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active_tool->gdisp_ptr = NULL;
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active_tool->drawable = NULL;
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}
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static void
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brightness_contrast_cancel_callback (GtkWidget *widget,
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gpointer data)
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{
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BrightnessContrastDialog *bcd;
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bcd = (BrightnessContrastDialog *) data;
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gimp_dialog_hide (bcd->shell);
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if (bcd->image_map)
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{
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active_tool->preserve = TRUE;
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image_map_abort (bcd->image_map);
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active_tool->preserve = FALSE;
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bcd->image_map = NULL;
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gdisplays_flush ();
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}
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active_tool->gdisp_ptr = NULL;
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active_tool->drawable = NULL;
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}
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static void
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brightness_contrast_preview_update (GtkWidget *widget,
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gpointer data)
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{
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BrightnessContrastDialog *bcd;
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bcd = (BrightnessContrastDialog *) data;
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if (GTK_TOGGLE_BUTTON (widget)->active)
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{
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bcd->preview = TRUE;
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brightness_contrast_preview (bcd);
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}
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else
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{
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bcd->preview = FALSE;
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if (bcd->image_map)
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{
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active_tool->preserve = TRUE;
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image_map_clear (bcd->image_map);
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active_tool->preserve = FALSE;
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gdisplays_flush ();
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}
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}
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}
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static void
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brightness_contrast_brightness_adjustment_update (GtkAdjustment *adjustment,
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gpointer data)
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{
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BrightnessContrastDialog *bcd;
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bcd = (BrightnessContrastDialog *) data;
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if (bcd->brightness != adjustment->value)
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{
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bcd->brightness = adjustment->value;
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if (bcd->preview)
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brightness_contrast_preview (bcd);
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}
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}
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static void
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brightness_contrast_contrast_adjustment_update (GtkAdjustment *adjustment,
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gpointer data)
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{
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BrightnessContrastDialog *bcd;
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bcd = (BrightnessContrastDialog *) data;
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if (bcd->contrast != adjustment->value)
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{
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bcd->contrast = adjustment->value;
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if (bcd->preview)
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brightness_contrast_preview (bcd);
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}
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}
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