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gimp/app/channel_ops.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 <stdlib.h>
#include <string.h>
#include <math.h>
#include "appenv.h"
#include "actionarea.h"
#include "channel_ops.h"
#include "cursorutil.h"
#include "drawable.h"
#include "floating_sel.h"
#include "general.h"
#include "gdisplay.h"
#include "interface.h"
#include "palette.h"
#include "libgimp/gimpintl.h"
#include "channel_pvt.h"
#include "layer_pvt.h"
#define ENTRY_WIDTH 60
typedef struct
{
GtkWidget *dlg;
GtkWidget *fill_options;
GtkWidget *off_x_entry;
GtkWidget *off_y_entry;
int wrap_around;
int transparent;
int background;
GimpImage* gimage;
} OffsetDialog;
/* Local procedures */
static void offset_ok_callback (GtkWidget *widget,
gpointer data);
static void offset_cancel_callback (GtkWidget *widget,
gpointer data);
static gint offset_delete_callback (GtkWidget *widget,
GdkEvent *event,
gpointer data);
static void offset_toggle_update (GtkWidget *widget,
gpointer data);
static void offset_wraparound_update (GtkWidget *widget,
gpointer data);
static void offset_halfheight_update (GtkWidget *widget,
gpointer data);
void
channel_ops_offset (GimpImage* gimage)
{
OffsetDialog *off_d;
GtkWidget *button;
GtkWidget *label;
GtkWidget *check;
GtkWidget *push;
GtkWidget *toggle;
GtkWidget *vbox;
GtkWidget *toggle_vbox;
GtkWidget *table;
GSList *group = NULL;
GimpDrawable *drawable;
drawable = gimage_active_drawable (gimage);
off_d = g_new (OffsetDialog, 1);
off_d->wrap_around = TRUE;
off_d->transparent = drawable_has_alpha (drawable);
off_d->background = !off_d->transparent;
off_d->gimage = gimage;
off_d->dlg = gtk_dialog_new ();
gtk_window_set_wmclass (GTK_WINDOW (off_d->dlg), "offset", "Gimp");
gtk_window_set_title (GTK_WINDOW (off_d->dlg), _("Offset"));
/* handle the wm close signal */
gtk_signal_connect (GTK_OBJECT (off_d->dlg), "delete_event",
GTK_SIGNAL_FUNC (offset_delete_callback),
off_d);
/* 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) offset_ok_callback,
off_d);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (off_d->dlg)->action_area), button, TRUE, TRUE, 0);
gtk_widget_grab_default (button);
gtk_widget_show (button);
button = gtk_button_new_with_label (_("Cancel"));
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) offset_cancel_callback,
off_d);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (off_d->dlg)->action_area), button, TRUE, TRUE, 0);
gtk_widget_show (button);
/* The vbox for first column of options */
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 1);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (off_d->dlg)->vbox), vbox, TRUE, TRUE, 0);
/* the table for offsets */
table = gtk_table_new (2, 2, FALSE);
gtk_box_pack_start (GTK_BOX (vbox), table, TRUE, TRUE, 0);
label = gtk_label_new (_("Offset X:"));
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1, GTK_FILL, GTK_FILL, 2, 2);
off_d->off_x_entry = gtk_entry_new ();
gtk_entry_set_text (GTK_ENTRY (off_d->off_x_entry), "0");
gtk_widget_set_usize (off_d->off_x_entry, ENTRY_WIDTH, 0);
gtk_table_attach (GTK_TABLE (table), off_d->off_x_entry, 1, 2, 0, 1, GTK_FILL | GTK_EXPAND, GTK_FILL, 2, 2);
gtk_widget_show (label);
gtk_widget_show (off_d->off_x_entry);
label = gtk_label_new (_("Offset Y:"));
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 1, 2, GTK_FILL, GTK_FILL, 2, 2);
off_d->off_y_entry = gtk_entry_new ();
gtk_entry_set_text (GTK_ENTRY (off_d->off_y_entry), "0");
gtk_widget_set_usize (off_d->off_y_entry, ENTRY_WIDTH, 0);
gtk_table_attach (GTK_TABLE (table), off_d->off_y_entry, 1, 2, 1, 2, GTK_FILL | GTK_EXPAND, GTK_FILL, 2, 2);
gtk_widget_show (label);
gtk_widget_show (off_d->off_y_entry);
gtk_widget_show (table);
/* the wrap around option */
check = gtk_check_button_new_with_label (_("Wrap-Around"));
gtk_box_pack_start (GTK_BOX (vbox), check, FALSE, FALSE, 0);
gtk_widget_show (check);
/* The fill options */
off_d->fill_options = gtk_frame_new (_("Fill Options"));
gtk_frame_set_shadow_type (GTK_FRAME (off_d->fill_options), GTK_SHADOW_ETCHED_IN);
gtk_box_pack_start (GTK_BOX (vbox), off_d->fill_options, FALSE, TRUE, 0);
toggle_vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (toggle_vbox), 5);
gtk_container_add (GTK_CONTAINER (off_d->fill_options), toggle_vbox);
toggle = gtk_radio_button_new_with_label (group, _("Background"));
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (toggle_vbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
(GtkSignalFunc) offset_toggle_update,
&off_d->background);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), off_d->background);
gtk_widget_show (toggle);
if (drawable_has_alpha (drawable))
{
toggle = gtk_radio_button_new_with_label (group, _("Transparent"));
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (toggle_vbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
(GtkSignalFunc) offset_toggle_update,
&off_d->transparent);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), off_d->transparent);
gtk_widget_show (toggle);
}
/* the by half height and half width offtion */
push = gtk_button_new_with_label (_("Offset by (x/2),(y/2)"));
gtk_box_pack_start (GTK_BOX (vbox), push, FALSE, FALSE,0);
gtk_widget_show (push);
gtk_widget_show (toggle_vbox);
gtk_widget_show (off_d->fill_options);
gtk_widget_show (vbox);
gtk_widget_show (off_d->dlg);
/* Hook up the wrap around */
gtk_signal_connect (GTK_OBJECT (check), "toggled",
(GtkSignalFunc) offset_wraparound_update,
off_d);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (check), off_d->wrap_around);
/* Hook up the by half */
gtk_signal_connect (GTK_OBJECT (push), "clicked",
(GtkSignalFunc) offset_halfheight_update,
off_d);
}
void
offset (GimpImage *gimage,
GimpDrawable *drawable,
int wrap_around,
int fill_type,
int offset_x,
int offset_y)
{
PixelRegion srcPR, destPR;
TileManager *new_tiles;
int width, height;
int src_x, src_y;
int dest_x, dest_y;
unsigned char fill[MAX_CHANNELS] = { 0 };
if (!drawable)
return;
width = drawable_width (drawable);
height = drawable_height (drawable);
if (wrap_around)
{
offset_x %= width;
offset_y %= height;
}
else
{
offset_x = BOUNDS (offset_x, -width, width);
offset_y = BOUNDS (offset_y, -height, height);
}
if (offset_x == 0 && offset_y == 0)
return;
new_tiles = tile_manager_new (width, height, drawable_bytes (drawable));
if (offset_x >= 0)
{
src_x = 0;
dest_x = offset_x;
width = BOUNDS ((width - offset_x), 0, width);
}
else
{
src_x = -offset_x;
dest_x = 0;
width = BOUNDS ((width + offset_x), 0, width);
}
if (offset_y >= 0)
{
src_y = 0;
dest_y = offset_y;
height = BOUNDS ((height - offset_y), 0, height);
}
else
{
src_y = -offset_y;
dest_y = 0;
height = BOUNDS ((height + offset_y), 0, height);
}
/* Copy the center region */
if (width && height)
{
pixel_region_init (&srcPR, drawable_data (drawable), src_x, src_y, width, height, FALSE);
pixel_region_init (&destPR, new_tiles, dest_x, dest_y, width, height, TRUE);
copy_region (&srcPR, &destPR);
}
/* Copy appropriately for wrap around */
if (wrap_around == TRUE)
{
if (offset_x >= 0 && offset_y >= 0)
{
src_x = drawable_width (drawable) - offset_x;
src_y = drawable_height (drawable) - offset_y;
}
else if (offset_x >= 0 && offset_y < 0)
{
src_x = drawable_width (drawable) - offset_x;
src_y = 0;
}
else if (offset_x < 0 && offset_y >= 0)
{
src_x = 0;
src_y = drawable_height (drawable) - offset_y;
}
else if (offset_x < 0 && offset_y < 0)
{
src_x = 0;
src_y = 0;
}
dest_x = (src_x + offset_x) % drawable_width (drawable);
if (dest_x < 0)
dest_x = drawable_width (drawable) + dest_x;
dest_y = (src_y + offset_y) % drawable_height (drawable);
if (dest_y < 0)
dest_y = drawable_height (drawable) + dest_y;
/* intersecting region */
if (offset_x != 0 && offset_y != 0)
{
pixel_region_init (&srcPR, drawable_data (drawable), src_x, src_y,
ABS (offset_x), ABS (offset_y), FALSE);
pixel_region_init (&destPR, new_tiles, dest_x, dest_y, ABS (offset_x), ABS (offset_y), TRUE);
copy_region (&srcPR, &destPR);
}
/* X offset */
if (offset_x != 0)
{
if (offset_y >= 0)
{
pixel_region_init (&srcPR, drawable_data (drawable), src_x, 0,
ABS (offset_x), drawable_height (drawable) - ABS (offset_y), FALSE);
pixel_region_init (&destPR, new_tiles, dest_x, dest_y + offset_y,
ABS (offset_x), drawable_height (drawable) - ABS (offset_y), TRUE);
}
else if (offset_y < 0)
{
pixel_region_init (&srcPR, drawable_data (drawable), src_x, src_y - offset_y,
ABS (offset_x), drawable_height (drawable) - ABS (offset_y), FALSE);
pixel_region_init (&destPR, new_tiles, dest_x, 0,
ABS (offset_x), drawable_height (drawable) - ABS (offset_y), TRUE);
}
copy_region (&srcPR, &destPR);
}
/* X offset */
if (offset_y != 0)
{
if (offset_x >= 0)
{
pixel_region_init (&srcPR, drawable_data (drawable), 0, src_y,
drawable_width (drawable) - ABS (offset_x), ABS (offset_y), FALSE);
pixel_region_init (&destPR, new_tiles, dest_x + offset_x, dest_y,
drawable_width (drawable) - ABS (offset_x), ABS (offset_y), TRUE);
}
else if (offset_x < 0)
{
pixel_region_init (&srcPR, drawable_data (drawable), src_x - offset_x, src_y,
drawable_width (drawable) - ABS (offset_x), ABS (offset_y), FALSE);
pixel_region_init (&destPR, new_tiles, 0, dest_y,
drawable_width (drawable) - ABS (offset_x), ABS (offset_y), TRUE);
}
copy_region (&srcPR, &destPR);
}
}
/* Otherwise, fill the vacated regions */
else
{
if (fill_type == OFFSET_BACKGROUND)
{
palette_get_background (&fill[0], &fill[1], &fill[2]);
if (drawable_has_alpha (drawable))
fill[drawable_bytes (drawable) - 1] = OPAQUE_OPACITY;
}
if (offset_x >= 0 && offset_y >= 0)
{
dest_x = 0;
dest_y = 0;
}
else if (offset_x >= 0 && offset_y < 0)
{
dest_x = 0;
dest_y = drawable_height (drawable) + offset_y;
}
else if (offset_x < 0 && offset_y >= 0)
{
dest_x = drawable_width (drawable) + offset_x;
dest_y = 0;
}
else if (offset_x < 0 && offset_y < 0)
{
dest_x = drawable_width (drawable) + offset_x;
dest_y = drawable_height (drawable) + offset_y;
}
/* intersecting region */
if (offset_x != 0 && offset_y != 0)
{
pixel_region_init (&destPR, new_tiles, dest_x, dest_y, ABS (offset_x), ABS (offset_y), TRUE);
color_region (&destPR, fill);
}
/* X offset */
if (offset_x != 0)
{
if (offset_y >= 0)
pixel_region_init (&destPR, new_tiles, dest_x, dest_y + offset_y,
ABS (offset_x), drawable_height (drawable) - ABS (offset_y), TRUE);
else if (offset_y < 0)
pixel_region_init (&destPR, new_tiles, dest_x, 0,
ABS (offset_x), drawable_height (drawable) - ABS (offset_y), TRUE);
color_region (&destPR, fill);
}
/* X offset */
if (offset_y != 0)
{
if (offset_x >= 0)
pixel_region_init (&destPR, new_tiles, dest_x + offset_x, dest_y,
drawable_width (drawable) - ABS (offset_x), ABS (offset_y), TRUE);
else if (offset_x < 0)
pixel_region_init (&destPR, new_tiles, 0, dest_y,
drawable_width (drawable) - ABS (offset_x), ABS (offset_y), TRUE);
color_region (&destPR, fill);
}
}
/* push an undo */
drawable_apply_image (drawable, 0, 0,
drawable_width (drawable), drawable_height (drawable),
drawable_data (drawable), FALSE);
/* swap the tiles */
drawable->tiles = new_tiles;
/* update the drawable */
drawable_update (drawable, 0, 0,
drawable_width (drawable), drawable_height (drawable));
}
/*
* Interface callbacks
*/
static void
offset_ok_callback (GtkWidget *widget,
gpointer data)
{
OffsetDialog *off_d;
GImage *gimage;
GimpDrawable *drawable;
int offset_x, offset_y;
int fill_type;
off_d = (OffsetDialog *) data;
if ((gimage = off_d->gimage) != NULL)
{
drawable = gimage_active_drawable (gimage);
offset_x = (int) atof (gtk_entry_get_text (GTK_ENTRY (off_d->off_x_entry)));
offset_y = (int) atof (gtk_entry_get_text (GTK_ENTRY (off_d->off_y_entry)));
if (off_d->transparent)
fill_type = OFFSET_TRANSPARENT;
else
fill_type = OFFSET_BACKGROUND;
offset (gimage, drawable, off_d->wrap_around, fill_type, offset_x, offset_y);
gdisplays_flush ();
}
gtk_widget_destroy (off_d->dlg);
g_free (off_d);
}
static gint
offset_delete_callback (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
offset_cancel_callback (widget, data);
return TRUE;
}
static void
offset_cancel_callback (GtkWidget *widget,
gpointer data)
{
OffsetDialog *off_d;
off_d = (OffsetDialog *) data;
gtk_widget_destroy (off_d->dlg);
g_free (off_d);
}
static void
offset_toggle_update (GtkWidget *widget,
gpointer data)
{
int *toggle_val;
toggle_val = (int *) data;
if (GTK_TOGGLE_BUTTON (widget)->active)
*toggle_val = TRUE;
else
*toggle_val = FALSE;
}
static void
offset_wraparound_update (GtkWidget *widget,
gpointer data)
{
OffsetDialog *off_d;
off_d = (OffsetDialog *) data;
if (GTK_TOGGLE_BUTTON (widget)->active)
off_d->wrap_around = TRUE;
else
off_d->wrap_around = FALSE;
gtk_widget_set_sensitive (off_d->fill_options, !off_d->wrap_around);
}
static void
offset_halfheight_update (GtkWidget *widget,
gpointer data)
{
OffsetDialog *off_d;
GImage *gimage;
gchar buffer[16];
off_d = (OffsetDialog *) data;
gimage = off_d->gimage;
sprintf (buffer, "%d", gimage->width / 2);
gtk_entry_set_text (GTK_ENTRY (off_d->off_x_entry), buffer);
sprintf (buffer, "%d", gimage->height / 2);
gtk_entry_set_text (GTK_ENTRY (off_d->off_y_entry), buffer);
}
GimpImage *
duplicate (GimpImage *gimage)
{
PixelRegion srcPR, destPR;
GimpImage *new_gimage;
Layer *layer, *new_layer;
Layer *floating_layer;
Channel *channel, *new_channel;
GSList *list;
GList *glist;
Guide *guide = NULL;
Layer *active_layer = NULL;
Channel *active_channel = NULL;
GimpDrawable *new_floating_sel_drawable = NULL;
GimpDrawable *floating_sel_drawable = NULL;
int count;
gimp_add_busy_cursors_until_idle();
/* Create a new image */
new_gimage = gimage_new (gimage->width, gimage->height, gimage->base_type);
gimage_disable_undo (new_gimage);
/* Copy-on-write the projection tilemanager so we don't have
to reproject the new gimage - since if we do the duplicate
operation correctly, the projection for the new gimage is
identical to that of the source. */
new_gimage->construct_flag = gimage->construct_flag;
new_gimage->proj_type = gimage->proj_type;
new_gimage->proj_bytes = gimage->proj_bytes;
new_gimage->proj_level = gimage->proj_level;
pixel_region_init (&srcPR, gimp_image_projection (gimage), 0, 0,
gimage->width, gimage->height, FALSE);
pixel_region_init (&destPR, gimp_image_projection (new_gimage), 0, 0,
new_gimage->width, new_gimage->height, TRUE);
/* We don't want to copy a half-redrawn projection, so force
a flush. */
gdisplays_finish_draw();
copy_region(&srcPR, &destPR);
/* Copy floating layer */
floating_layer = gimage_floating_sel (gimage);
if (floating_layer)
{
floating_sel_relax (floating_layer, FALSE);
floating_sel_drawable = floating_layer->fs.drawable;
floating_layer = NULL;
}
/* Copy the layers */
list = gimage->layers;
count = 0;
layer = NULL;
while (list)
{
layer = (Layer *) list->data;
list = g_slist_next (list);
new_layer = layer_copy (layer, FALSE);
gimp_drawable_set_gimage(GIMP_DRAWABLE(new_layer), new_gimage);
/* Make sure the copied layer doesn't say: "<old layer> copy" */
layer_set_name(GIMP_LAYER(new_layer),
layer_get_name(GIMP_LAYER(layer)));
/* Make sure if the layer has a layer mask, it's name isn't screwed up */
if (new_layer->mask)
{
gimp_drawable_set_name(GIMP_DRAWABLE(new_layer->mask),
gimp_drawable_get_name(GIMP_DRAWABLE(layer->mask)));
}
if (gimage->active_layer == layer)
active_layer = new_layer;
if (gimage->floating_sel == layer)
floating_layer = new_layer;
if (floating_sel_drawable == GIMP_DRAWABLE(layer))
new_floating_sel_drawable = GIMP_DRAWABLE(new_layer);
/* Add the layer */
if (floating_layer != new_layer)
gimage_add_layer (new_gimage, new_layer, count++);
}
/* Copy the channels */
list = gimage->channels;
count = 0;
while (list)
{
channel = (Channel *) list->data;
list = g_slist_next (list);
new_channel = channel_copy (channel);
gimp_drawable_set_gimage(GIMP_DRAWABLE(new_channel), new_gimage);
/* Make sure the copied channel doesn't say: "<old channel> copy" */
gimp_drawable_set_name(GIMP_DRAWABLE(new_channel),
gimp_drawable_get_name(GIMP_DRAWABLE(channel)));
if (gimage->active_channel == channel)
active_channel = (new_channel);
if (floating_sel_drawable == GIMP_DRAWABLE(channel))
new_floating_sel_drawable = GIMP_DRAWABLE(new_channel);
/* Add the channel */
gimage_add_channel (new_gimage, new_channel, count++);
}
/* Copy the selection mask */
pixel_region_init (&srcPR, drawable_data (GIMP_DRAWABLE(gimage->selection_mask)), 0, 0, gimage->width, gimage->height, FALSE);
pixel_region_init (&destPR, drawable_data (GIMP_DRAWABLE(new_gimage->selection_mask)), 0, 0, gimage->width, gimage->height, TRUE);
copy_region (&srcPR, &destPR);
new_gimage->selection_mask->bounds_known = FALSE;
new_gimage->selection_mask->boundary_known = FALSE;
/* Set active layer, active channel */
new_gimage->active_layer = active_layer;
new_gimage->active_channel = active_channel;
if (floating_layer)
floating_sel_attach (floating_layer, new_floating_sel_drawable);
/* Copy the colormap if necessary */
if (new_gimage->base_type == INDEXED)
memcpy (new_gimage->cmap, gimage->cmap, gimage->num_cols * 3);
new_gimage->num_cols = gimage->num_cols;
/* copy state of all color channels */
for (count = 0; count < MAX_CHANNELS; count++)
{
new_gimage->visible[count] = gimage->visible[count];
new_gimage->active[count] = gimage->active[count];
}
/* Copy any Guides */
glist = gimage->guides;
while (glist)
{
Guide* new_guide;
guide = (Guide*) glist->data;
glist = g_list_next (glist);
switch (guide->orientation)
{
case HORIZONTAL_GUIDE:
new_guide = gimp_image_add_hguide(new_gimage);
new_guide->position = guide->position;
break;
case VERTICAL_GUIDE:
new_guide = gimp_image_add_vguide(new_gimage);
new_guide->position = guide->position;
break;
default:
g_error("Unknown guide orientation.\n");
}
}
gimage_enable_undo (new_gimage);
return new_gimage;
}
void
channel_ops_duplicate (GimpImage *gimage)
{
gdisplay_new (duplicate (gimage), 0x0101);
}
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