mirror of https://github.com/GNOME/gimp.git
542 lines
15 KiB
C
542 lines
15 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 <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include "appenv.h"
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#include "actionarea.h"
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#include "brightness_contrast.h"
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#include "drawable.h"
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#include "general.h"
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#include "gimage_mask.h"
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#include "gdisplay.h"
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#include "image_map.h"
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#include "interface.h"
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#include "gimplut.h"
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#include "lut_funcs.h"
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#include "libgimp/gimpintl.h"
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#define TEXT_WIDTH 45
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#define TEXT_HEIGHT 25
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#define SLIDER_WIDTH 200
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#define SLIDER_HEIGHT 35
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#define BRIGHTNESS_SLIDER 0x1
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#define CONTRAST_SLIDER 0x2
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#define BRIGHTNESS_TEXT 0x4
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#define CONTRAST_TEXT 0x8
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#define ALL 0xF
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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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int 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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GtkWidget *brightness_text;
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GtkWidget *contrast_text;
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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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double brightness;
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double contrast;
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gint 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_new_dialog (void);
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static void brightness_contrast_update (BrightnessContrastDialog *, int);
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static void brightness_contrast_preview (BrightnessContrastDialog *);
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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 gint brightness_contrast_delete_callback (GtkWidget *, GdkEvent *, gpointer);
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static void brightness_contrast_preview_update (GtkWidget *, gpointer);
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static void brightness_contrast_brightness_scale_update (GtkAdjustment *, gpointer);
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static void brightness_contrast_contrast_scale_update (GtkAdjustment *, gpointer);
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static void brightness_contrast_brightness_text_update (GtkWidget *, gpointer);
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static void brightness_contrast_contrast_text_update (GtkWidget *, 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 ()
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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 Options"));
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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 color select 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_new_dialog ();
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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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/* Initialize dialog fields */
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brightness_contrast_dialog->image_map = NULL;
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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_new_dialog ()
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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 *slider;
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GtkWidget *toggle;
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GtkObject *data;
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static ActionAreaItem action_items[] =
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{
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{ N_("OK"), brightness_contrast_ok_callback, NULL, NULL },
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{ N_("Cancel"), brightness_contrast_cancel_callback, NULL, NULL }
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};
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bcd = g_malloc (sizeof (BrightnessContrastDialog));
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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 = gtk_dialog_new ();
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gtk_window_set_wmclass (GTK_WINDOW (bcd->shell), "brightness_contrast", "Gimp");
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gtk_window_set_title (GTK_WINDOW (bcd->shell), _("Brightness-Contrast"));
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/* handle wm close signal */
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gtk_signal_connect (GTK_OBJECT (bcd->shell), "delete_event",
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GTK_SIGNAL_FUNC (brightness_contrast_delete_callback),
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bcd);
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vbox = gtk_vbox_new (FALSE, 2);
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gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
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gtk_box_pack_start (GTK_BOX (GTK_DIALOG (bcd->shell)->vbox), vbox, TRUE, TRUE, 0);
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/* The table containing sliders */
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table = gtk_table_new (2, 3, FALSE);
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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, 2, 2);
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data = gtk_adjustment_new (0, -127, 127.0, 1.0, 1.0, 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, SLIDER_HEIGHT);
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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 (GTK_TABLE (table), slider, 1, 2, 0, 1,
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GTK_EXPAND | GTK_SHRINK | GTK_FILL,
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GTK_EXPAND | GTK_SHRINK | GTK_FILL,
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2, 2);
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gtk_signal_connect (GTK_OBJECT (data), "value_changed",
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(GtkSignalFunc) brightness_contrast_brightness_scale_update,
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bcd);
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bcd->brightness_text = gtk_entry_new ();
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gtk_widget_set_usize (bcd->brightness_text, TEXT_WIDTH, TEXT_HEIGHT);
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gtk_table_attach (GTK_TABLE (table), bcd->brightness_text, 2, 3, 0, 1,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 2, 2);
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gtk_signal_connect (GTK_OBJECT (bcd->brightness_text), "changed",
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(GtkSignalFunc) brightness_contrast_brightness_text_update,
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bcd);
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gtk_widget_show (label);
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gtk_widget_show (bcd->brightness_text);
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gtk_widget_show (slider);
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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, 2, 2);
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data = gtk_adjustment_new (0, -127.0, 127.0, 1.0, 1.0, 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, SLIDER_HEIGHT);
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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 (GTK_TABLE (table), slider, 1, 2, 1, 2,
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GTK_EXPAND | GTK_SHRINK | GTK_FILL,
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GTK_EXPAND | GTK_SHRINK | GTK_FILL,
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2, 2);
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gtk_signal_connect (GTK_OBJECT (data), "value_changed",
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(GtkSignalFunc) brightness_contrast_contrast_scale_update,
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bcd);
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bcd->contrast_text = gtk_entry_new ();
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gtk_widget_set_usize (bcd->contrast_text, TEXT_WIDTH, TEXT_HEIGHT);
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gtk_table_attach (GTK_TABLE (table), bcd->contrast_text, 2, 3, 1, 2,
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GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 2, 2);
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gtk_signal_connect (GTK_OBJECT (bcd->contrast_text), "changed",
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(GtkSignalFunc) brightness_contrast_contrast_text_update,
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bcd);
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gtk_widget_show (label);
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gtk_widget_show (bcd->contrast_text);
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gtk_widget_show (slider);
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/* Horizontal box for preview and preserve luminosity toggle buttons */
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hbox = gtk_hbox_new (TRUE, 2);
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gtk_box_pack_start (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_start (GTK_BOX (hbox), toggle, TRUE, FALSE, 0);
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gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
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(GtkSignalFunc) brightness_contrast_preview_update,
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bcd);
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gtk_widget_show (label);
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gtk_widget_show (toggle);
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gtk_widget_show (hbox);
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/* The action area */
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action_items[0].user_data = bcd;
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action_items[1].user_data = bcd;
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build_action_area (GTK_DIALOG (bcd->shell), action_items, 2, 0);
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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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int update)
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{
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char text[12];
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if (update & BRIGHTNESS_SLIDER)
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{
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bcd->brightness_data->value = bcd->brightness;
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gtk_signal_emit_by_name (GTK_OBJECT (bcd->brightness_data), "value_changed");
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}
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if (update & CONTRAST_SLIDER)
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{
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bcd->contrast_data->value = bcd->contrast;
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gtk_signal_emit_by_name (GTK_OBJECT (bcd->contrast_data), "value_changed");
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}
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if (update & BRIGHTNESS_TEXT)
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{
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sprintf (text, "%0.0f", bcd->brightness);
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gtk_entry_set_text (GTK_ENTRY (bcd->brightness_text), text);
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}
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if (update & CONTRAST_TEXT)
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{
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sprintf (text, "%0.0f", bcd->contrast);
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gtk_entry_set_text (GTK_ENTRY (bcd->contrast_text), text);
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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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g_message ("brightness_contrast_preview(): No image map");
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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_ok_callback (GtkWidget *widget,
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gpointer client_data)
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{
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BrightnessContrastDialog *bcd;
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bcd = (BrightnessContrastDialog *) client_data;
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if (GTK_WIDGET_VISIBLE (bcd->shell))
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gtk_widget_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 gint
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brightness_contrast_delete_callback (GtkWidget *w,
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GdkEvent *e,
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gpointer d)
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{
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brightness_contrast_cancel_callback (w, d);
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return TRUE;
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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 client_data)
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{
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BrightnessContrastDialog *bcd;
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bcd = (BrightnessContrastDialog *) client_data;
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if (GTK_WIDGET_VISIBLE (bcd->shell))
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gtk_widget_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 *w,
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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 (w)->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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bcd->preview = FALSE;
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}
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static void
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brightness_contrast_brightness_scale_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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brightness_contrast_update (bcd, BRIGHTNESS_TEXT);
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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_scale_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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brightness_contrast_update (bcd, CONTRAST_TEXT);
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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_brightness_text_update (GtkWidget *w,
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gpointer data)
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{
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BrightnessContrastDialog *bcd;
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char *str;
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int value;
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str = gtk_entry_get_text (GTK_ENTRY (w));
|
|
bcd = (BrightnessContrastDialog *) data;
|
|
value = BOUNDS (((int) atof (str)), -127, 127);
|
|
|
|
if ((int) bcd->brightness != value)
|
|
{
|
|
bcd->brightness = value;
|
|
brightness_contrast_update (bcd, BRIGHTNESS_SLIDER);
|
|
|
|
if (bcd->preview)
|
|
brightness_contrast_preview (bcd);
|
|
}
|
|
}
|
|
|
|
static void
|
|
brightness_contrast_contrast_text_update (GtkWidget *w,
|
|
gpointer data)
|
|
{
|
|
BrightnessContrastDialog *bcd;
|
|
char *str;
|
|
int value;
|
|
|
|
str = gtk_entry_get_text (GTK_ENTRY (w));
|
|
bcd = (BrightnessContrastDialog *) data;
|
|
value = BOUNDS (((int) atof (str)), -127, 127);
|
|
|
|
if ((int) bcd->contrast != value)
|
|
{
|
|
bcd->contrast = value;
|
|
brightness_contrast_update (bcd, CONTRAST_SLIDER);
|
|
|
|
if (bcd->preview)
|
|
brightness_contrast_preview (bcd);
|
|
}
|
|
}
|