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gimp/app/qmask.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "apptypes.h"
#include "widgets/gimpcolorpanel.h"
#include "drawable.h"
#include "floating_sel.h"
#include "gdisplay.h"
#include "gimage_mask.h"
#include "gimpchannel.h"
#include "gimpcontext.h"
#include "gimpimage.h"
#include "global_edit.h"
#include "qmask.h"
#include "undo.h"
#include "libgimp/gimpintl.h"
struct _EditQmaskOptions
{
GtkWidget *query_box;
GtkWidget *name_entry;
GtkWidget *color_panel;
GimpImage *gimage;
};
typedef struct _EditQmaskOptions EditQmaskOptions;
/* Global variables */
/* Static variables */
/* Prototypes */
static void edit_qmask_channel_query (GDisplay *gdisp);
static void edit_qmask_query_ok_callback (GtkWidget *widget,
gpointer client_data);
static void edit_qmask_query_cancel_callback (GtkWidget *widget,
gpointer client_data);
static void qmask_query_scale_update (GtkAdjustment *adjustment,
gpointer data);
static void qmask_color_changed (GimpColorButton *button,
gpointer data);
static void qmask_removed_callback (GtkObject *qmask,
gpointer data);
/* Actual code */
static void
qmask_query_scale_update (GtkAdjustment *adjustment,
gpointer data)
{
GimpRGB color;
gimp_color_button_get_color (GIMP_COLOR_BUTTON (data), &color);
gimp_rgb_set_alpha (&color, adjustment->value / 100.0);
gimp_color_button_set_color (GIMP_COLOR_BUTTON (data), &color);
}
static void
qmask_color_changed (GimpColorButton *button,
gpointer data)
{
GtkAdjustment *adj = GTK_ADJUSTMENT (data);
GimpRGB color;
gimp_color_button_get_color (button, &color);
gtk_adjustment_set_value (adj, color.a * 100.0);
}
static void
qmask_removed_callback (GtkObject *qmask,
gpointer data)
{
GDisplay *gdisp = (GDisplay*) data;
if (!gdisp->gimage)
return;
gdisp->gimage->qmask_state = FALSE;
qmask_buttons_update (gdisp);
}
void
qmask_buttons_update (GDisplay *gdisp)
{
g_assert (gdisp);
g_assert (gdisp->gimage);
if (gdisp->gimage->qmask_state != GTK_TOGGLE_BUTTON (gdisp->qmaskon)->active)
{
/* Disable toggle from doing anything */
gtk_signal_handler_block_by_func(GTK_OBJECT(gdisp->qmaskoff),
(GtkSignalFunc) qmask_deactivate,
gdisp);
gtk_signal_handler_block_by_func(GTK_OBJECT(gdisp->qmaskon),
(GtkSignalFunc) qmask_activate,
gdisp);
/* Change the state of the buttons */
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(gdisp->qmaskon),
gdisp->gimage->qmask_state);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(gdisp->qmaskoff),
!gdisp->gimage->qmask_state);
/* Enable toggle again */
gtk_signal_handler_unblock_by_func(GTK_OBJECT(gdisp->qmaskoff),
(GtkSignalFunc) qmask_deactivate,
gdisp);
gtk_signal_handler_unblock_by_func(GTK_OBJECT(gdisp->qmaskon),
(GtkSignalFunc) qmask_activate,
gdisp);
}
}
void
qmask_click_handler (GtkWidget *widget,
GdkEventButton *event,
gpointer data)
{
GDisplay *gdisp;
gdisp = (GDisplay *) data;
if ((event->type == GDK_2BUTTON_PRESS) &&
(event->button == 1))
{
edit_qmask_channel_query (gdisp);
}
}
void
qmask_deactivate (GtkWidget *widget,
GDisplay *gdisp)
{
GimpImage *gimg;
GimpChannel *gmask;
if (gdisp)
{
gimg = gdisp->gimage;
if (!gimg)
return;
if (!gdisp->gimage->qmask_state)
return; /* if already set do nothing */
if ( (gmask = gimp_image_get_channel_by_name (gimg, "Qmask")) )
{
undo_push_group_start (gimg, QMASK_UNDO);
/* push the undo here since removing the mask will
call the qmask_removed_callback() which will set
the qmask_state to FALSE */
undo_push_qmask (gimg);
gimage_mask_load (gimg, gmask);
gimp_image_remove_channel (gimg, gmask);
undo_push_group_end (gimg);
}
gdisp->gimage->qmask_state = FALSE;
if (gmask)
gdisplays_flush ();
}
}
void
qmask_activate (GtkWidget *widget,
GDisplay *gdisp)
{
GimpImage *gimg;
GimpChannel *gmask;
GimpLayer *layer;
GimpRGB color;
if (gdisp)
{
gimg = gdisp->gimage;
if (!gimg)
return;
if (gdisp->gimage->qmask_state)
return; /* If already set, do nothing */
/* Set the defaults */
color = gimg->qmask_color;
if ((gmask = gimp_image_get_channel_by_name (gimg, "Qmask")))
{
gimg->qmask_state = TRUE;
/* if the user was clever and created his own */
return;
}
undo_push_group_start (gimg, QMASK_UNDO);
if (gimage_mask_is_empty (gimg))
{
/* if no selection */
if ((layer = gimp_image_floating_sel (gimg)))
{
floating_sel_to_layer (layer);
}
gmask = gimp_channel_new (gimg,
gimg->width,
gimg->height,
"Qmask",
&color);
gimp_image_add_channel (gimg, gmask, 0);
drawable_fill (GIMP_DRAWABLE (gmask), TRANSPARENT_FILL);
}
else
{
/* if selection */
gmask = gimp_channel_copy (gimp_image_get_mask (gimg), TRUE);
gimp_image_add_channel (gimg, gmask, 0);
gimp_channel_set_color (gmask, &color);
gimp_object_set_name (GIMP_OBJECT (gmask), "Qmask");
gimage_mask_none (gimg); /* Clear the selection */
}
undo_push_qmask (gimg);
undo_push_group_end (gimg);
gdisp->gimage->qmask_state = TRUE;
gdisplays_flush ();
/* connect to the removed signal, so the buttons get updated */
gtk_signal_connect (GTK_OBJECT (gmask), "removed",
GTK_SIGNAL_FUNC (qmask_removed_callback),
gdisp);
}
}
static void
edit_qmask_channel_query (GDisplay * gdisp)
{
EditQmaskOptions *options;
GtkWidget *hbox;
GtkWidget *vbox;
GtkWidget *table;
GtkWidget *label;
GtkWidget *opacity_scale;
GtkObject *opacity_scale_data;
/* the new options structure */
options = g_new0 (EditQmaskOptions, 1);
options->gimage = gdisp->gimage;
options->color_panel = gimp_color_panel_new (_("Edit Qmask Color"),
&options->gimage->qmask_color,
GIMP_COLOR_AREA_LARGE_CHECKS,
48, 64);
/* The dialog */
options->query_box =
gimp_dialog_new (_("Edit Qmask Attributes"), "edit_qmask_attributes",
gimp_standard_help_func,
"dialogs/edit_qmask_attributes.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
_("OK"), edit_qmask_query_ok_callback,
options, NULL, NULL, TRUE, FALSE,
_("Cancel"), edit_qmask_query_cancel_callback,
options, NULL, NULL, FALSE, TRUE,
NULL);
/* The main hbox */
hbox = gtk_hbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 4);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (options->query_box)->vbox),
hbox);
/* The vbox */
vbox = gtk_vbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
/* The table */
table = gtk_table_new (2, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
/* The opacity scale */
label = gtk_label_new (_("Mask Opacity:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 1.0);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 1, 2,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (label);
opacity_scale_data =
gtk_adjustment_new (options->gimage->qmask_color.a * 100.0,
0.0, 100.0, 1.0, 1.0, 0.0);
opacity_scale = gtk_hscale_new (GTK_ADJUSTMENT (opacity_scale_data));
gtk_table_attach_defaults (GTK_TABLE (table), opacity_scale, 1, 2, 1, 2);
gtk_scale_set_value_pos (GTK_SCALE (opacity_scale), GTK_POS_TOP);
gtk_signal_connect (GTK_OBJECT (opacity_scale_data), "value_changed",
GTK_SIGNAL_FUNC (qmask_query_scale_update),
options->color_panel);
gtk_widget_show (opacity_scale);
/* The color panel */
gtk_signal_connect (GTK_OBJECT (options->color_panel), "color_changed",
GTK_SIGNAL_FUNC (qmask_color_changed),
opacity_scale_data);
gtk_box_pack_start (GTK_BOX (hbox), options->color_panel,
TRUE, TRUE, 0);
gtk_widget_show (options->color_panel);
gtk_widget_show (table);
gtk_widget_show (vbox);
gtk_widget_show (hbox);
gtk_widget_show (options->query_box);
}
static void
edit_qmask_query_ok_callback (GtkWidget *widget,
gpointer data)
{
EditQmaskOptions *options;
GimpChannel *channel;
GimpRGB color;
options = (EditQmaskOptions *) data;
channel = gimp_image_get_channel_by_name (options->gimage, "Qmask");
if (options->gimage && channel)
{
gimp_color_button_get_color (GIMP_COLOR_BUTTON (options->color_panel),
&color);
if (gimp_rgba_distance (&color, &channel->color) > 0.0001)
{
channel->color = color;
drawable_update (GIMP_DRAWABLE (channel),
0, 0,
GIMP_DRAWABLE (channel)->width,
GIMP_DRAWABLE (channel)->height);
gdisplays_flush ();
}
}
/* update the qmask color no matter what */
options->gimage->qmask_color = color;
gtk_widget_destroy (options->query_box);
g_free (options);
}
static void
edit_qmask_query_cancel_callback (GtkWidget *widget,
gpointer data)
{
EditQmaskOptions *options;
options = (EditQmaskOptions *) data;
gtk_widget_destroy (options->query_box);
g_free (options);
}
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