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gimp/plug-ins/common/align_layers.c

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/* align_layers.c -- This is a plug-in for the GIMP (1.0's API)
* Author: Shuji Narazaki <narazaki@InetQ.or.jp>
* Time-stamp: <1999-12-18 05:48:38 yasuhiro>
* Version: 0.26
*
* Copyright (C) 1997-1998 Shuji Narazaki <narazaki@InetQ.or.jp>
*
* 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define PLUG_IN_NAME "plug_in_align_layers"
#define SHORT_NAME "align_layers"
#define SCALE_WIDTH 150
enum
{
H_NONE,
H_COLLECT,
LEFT2RIGHT,
RIGHT2LEFT,
SNAP2HGRID
};
enum
{
H_BASE_LEFT,
H_BASE_CENTER,
H_BASE_RIGHT
};
enum
{
V_NONE,
V_COLLECT,
TOP2BOTTOM,
BOTTOM2TOP,
SNAP2VGRID
};
enum
{
V_BASE_TOP,
V_BASE_CENTER,
V_BASE_BOTTOM
};
static void query (void);
static void run (gchar *name,
gint nparams,
GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static GimpPDBStatusType align_layers (gint32 image_id);
static void align_layers_get_align_offsets (gint32 drawable_id,
gint *x,
gint *y);
static gint align_layers_dialog (void);
static void align_layers_ok_callback (GtkWidget *widget,
gpointer data);
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
/* dialog variables */
typedef struct
{
gint h_style;
gint h_base;
gint v_style;
gint v_base;
gint ignore_bottom;
gint base_is_bottom_layer;
gint grid_size;
} ValueType;
static ValueType VALS =
{
H_NONE,
H_BASE_LEFT,
V_NONE,
V_BASE_TOP,
TRUE,
FALSE,
10
};
typedef struct
{
gint run;
} Interface;
static Interface INTERFACE =
{
FALSE
};
MAIN ()
static void
query (void)
{
static GimpParamDef args [] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive"},
{ GIMP_PDB_IMAGE, "image", "Input image"},
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable (not used)"},
{ GIMP_PDB_INT32, "link-afteer-alignment", "Link the visible layers after alignment"},
{ GIMP_PDB_INT32, "use-bottom", "use the bottom layer as the base of alignment"}
};
static gint nargs = sizeof (args) / sizeof (args[0]);
gimp_install_procedure (PLUG_IN_NAME,
"Align visible layers",
"Align visible layers",
"Shuji Narazaki <narazaki@InetQ.or.jp>",
"Shuji Narazaki",
"1997",
N_("<Image>/Layers/Align Visible Layers..."),
"RGB*,GRAY*",
GIMP_PLUGIN,
nargs, 0,
args, NULL);
}
static void
run (gchar *name,
gint nparams,
GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpPDBStatusType status = GIMP_PDB_EXECUTION_ERROR;
GimpRunModeType run_mode;
gint image_id, layer_num;
run_mode = param[0].data.d_int32;
image_id = param[1].data.d_int32;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
switch ( run_mode )
{
case GIMP_RUN_INTERACTIVE:
INIT_I18N_UI();
gimp_image_get_layers (image_id, &layer_num);
if (layer_num < 2)
{
g_message (_("Align Visible Layers: there are too few layers."));
return;
}
gimp_get_data (PLUG_IN_NAME, &VALS);
if (! align_layers_dialog ())
return;
break;
case GIMP_RUN_NONINTERACTIVE:
INIT_I18N();
break;
case GIMP_RUN_WITH_LAST_VALS:
INIT_I18N();
gimp_get_data (PLUG_IN_NAME, &VALS);
break;
}
status = align_layers (image_id);
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
if (run_mode == GIMP_RUN_INTERACTIVE && status == GIMP_PDB_SUCCESS)
gimp_set_data (PLUG_IN_NAME, &VALS, sizeof (ValueType));
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
}
static GimpPDBStatusType
align_layers (gint32 image_id)
{
gint layer_num = 0;
gint visible_layer_num = 0;
gint *layers = NULL;
gint index;
gint vindex;
gint step_x = 0;
gint step_y = 0;
gint x = 0;
gint y = 0;
gint orig_x = 0;
gint orig_y = 0;
gint offset_x = 0;
gint offset_y = 0;
gint base_x = 0;
gint base_y = 0;
gint bg_index = 0;
layers = gimp_image_get_layers (image_id, &layer_num);
bg_index = layer_num - 1;
for (index = 0; index < layer_num; index++)
{
if (gimp_layer_get_visible (layers[index]))
visible_layer_num++;
}
if (VALS.ignore_bottom)
{
layer_num--;
if (gimp_layer_get_visible (layers[bg_index]))
visible_layer_num--;
}
if (0 < visible_layer_num)
{
gboolean uninitialized = TRUE;
gint min_x = 0;
gint min_y = 0;
gint max_x = 0;
gint max_y = 0;
/* 0 is the top layer */
for (index = 0; index < layer_num; index++)
{
if (gimp_layer_get_visible (layers[index]))
{
gimp_drawable_offsets (layers[index], &orig_x, &orig_y);
align_layers_get_align_offsets (layers[index], &offset_x, &offset_y);
orig_x += offset_x;
orig_y += offset_y;
if (uninitialized)
{
base_x = min_x = max_x = orig_x;
base_y = min_y = max_y = orig_y;
uninitialized = FALSE;
}
else
{
if ( orig_x < min_x ) min_x = orig_x;
if ( max_x < orig_x ) max_x = orig_x;
if ( orig_y < min_y ) min_y = orig_y;
if ( max_y < orig_y ) max_y = orig_y;
}
}
}
if (VALS.base_is_bottom_layer)
{
gimp_drawable_offsets (layers[bg_index], &orig_x, &orig_y);
align_layers_get_align_offsets (layers[bg_index], &offset_x, &offset_y);
orig_x += offset_x;
orig_y += offset_y;
base_x = min_x = orig_x;
base_y = min_y = orig_y;
}
if (visible_layer_num > 1)
{
step_x = (max_x - min_x) / (visible_layer_num - 1);
step_y = (max_y - min_y) / (visible_layer_num - 1);
}
if ( (VALS.h_style == LEFT2RIGHT) || (VALS.h_style == RIGHT2LEFT))
base_x = min_x;
if ( (VALS.v_style == TOP2BOTTOM) || (VALS.v_style == BOTTOM2TOP))
base_y = min_y;
}
gimp_undo_push_group_start (image_id);
for (vindex = -1, index = 0; index < layer_num; index++)
{
if (gimp_layer_get_visible (layers[index]))
vindex++;
else
continue;
gimp_drawable_offsets (layers[index], &orig_x, &orig_y);
align_layers_get_align_offsets (layers[index], &offset_x, &offset_y);
switch (VALS.h_style)
{
case H_NONE:
x = orig_x;
break;
case H_COLLECT:
x = base_x - offset_x;
break;
case LEFT2RIGHT:
x = (base_x + vindex * step_x) - offset_x;
break;
case RIGHT2LEFT:
x = (base_x + (visible_layer_num - vindex - 1) * step_x) - offset_x;
break;
case SNAP2HGRID:
x = VALS.grid_size
* (int) ((orig_x + offset_x + VALS.grid_size /2) / VALS.grid_size)
- offset_x;
break;
}
switch (VALS.v_style)
{
case V_NONE:
y = orig_y;
break;
case V_COLLECT:
y = base_y - offset_y;
break;
case TOP2BOTTOM:
y = (base_y + vindex * step_y) - offset_y;
break;
case BOTTOM2TOP:
y = (base_y + (visible_layer_num - vindex - 1) * step_y) - offset_y;
break;
case SNAP2VGRID:
y = VALS.grid_size
* (int) ((orig_y + offset_y + VALS.grid_size / 2) / VALS.grid_size)
- offset_y;
break;
}
gimp_layer_set_offsets (layers[index], x, y);
}
gimp_undo_push_group_end (image_id);
return GIMP_PDB_SUCCESS;
}
static void
align_layers_get_align_offsets (gint32 drawable_id,
gint *x,
gint *y)
{
GimpDrawable *layer = gimp_drawable_get (drawable_id);
switch (VALS.h_base)
{
case H_BASE_LEFT:
*x = 0;
break;
case H_BASE_CENTER:
*x = (gint) (layer->width / 2);
break;
case H_BASE_RIGHT:
*x = layer->width;
break;
default:
*x = 0;
break;
}
switch (VALS.v_base)
{
case V_BASE_TOP:
*y = 0;
break;
case V_BASE_CENTER:
*y = (gint) (layer->height / 2);
break;
case V_BASE_BOTTOM:
*y = layer->height;
break;
default:
*y = 0;
break;
}
}
/* dialog stuff */
static int
align_layers_dialog (void)
{
GtkWidget *dlg;
GtkWidget *frame;
GtkWidget *table;
GtkWidget *optionmenu;
GtkWidget *toggle;
GtkObject *adj;
gimp_ui_init (SHORT_NAME, FALSE);
dlg = gimp_dialog_new (_("Align Visible Layers"), SHORT_NAME,
gimp_standard_help_func, "filters/align_layers.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
GTK_STOCK_OK, align_layers_ok_callback,
NULL, NULL, NULL, TRUE, FALSE,
GTK_STOCK_CANCEL, gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
NULL);
gtk_signal_connect (GTK_OBJECT (dlg), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit),
NULL);
frame = gtk_frame_new (_("Parameter Settings"));
gtk_container_set_border_width (GTK_CONTAINER (frame), 6);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
table = gtk_table_new (7, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_container_set_border_width (GTK_CONTAINER (table), 4);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_widget_show (table);
optionmenu =
gimp_option_menu_new2 (FALSE, G_CALLBACK (gimp_menu_item_update),
&VALS.h_style, (gpointer) VALS.h_style,
_("None"),
(gpointer) H_NONE, NULL,
_("Collect"),
(gpointer) H_COLLECT, NULL,
_("Fill (left to right)"),
(gpointer) LEFT2RIGHT, NULL,
_("Fill (right to left)"),
(gpointer) RIGHT2LEFT, NULL,
_("Snap to Grid"),
(gpointer) SNAP2HGRID, NULL,
NULL);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Horizontal Style:"), 1.0, 0.5,
optionmenu, 1, FALSE);
optionmenu =
gimp_option_menu_new2 (FALSE, G_CALLBACK (gimp_menu_item_update),
&VALS.h_base, (gpointer) VALS.h_base,
_("Left Edge"), (gpointer) H_BASE_LEFT, NULL,
_("Center"), (gpointer) H_BASE_CENTER, NULL,
_("Right Edge"), (gpointer) H_BASE_RIGHT, NULL,
NULL);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("Horizontal Base:"), 1.0, 0.5,
optionmenu, 1, FALSE);
optionmenu =
gimp_option_menu_new2 (FALSE, G_CALLBACK (gimp_menu_item_update),
&VALS.v_style, (gpointer) VALS.v_style,
_("None"),
(gpointer) V_NONE, NULL,
_("Collect"),
(gpointer) V_COLLECT, NULL,
_("Fill (top to bottom)"),
(gpointer) TOP2BOTTOM, NULL,
_("Fill (bottom to top)"),
(gpointer) BOTTOM2TOP, NULL,
_("Snap to Grid"),
(gpointer) SNAP2VGRID, NULL,
NULL);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 2,
_("Vertical Style:"), 1.0, 0.5,
optionmenu, 1, FALSE);
optionmenu =
gimp_option_menu_new2 (FALSE, G_CALLBACK (gimp_menu_item_update),
&VALS.v_base, (gpointer) VALS.v_base,
_("Top Edge"), (gpointer) V_BASE_TOP, NULL,
_("Center"), (gpointer) V_BASE_CENTER, NULL,
_("Bottom Edge"), (gpointer) V_BASE_BOTTOM, NULL,
NULL);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 3,
_("Vertical Base:"), 1.0, 0.5,
optionmenu, 1, FALSE);
toggle =
gtk_check_button_new_with_label
(_("Ignore the Bottom Layer even if Visible"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), VALS.ignore_bottom);
gtk_table_attach_defaults (GTK_TABLE (table), toggle, 0, 2, 4, 5);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
&VALS.ignore_bottom);
gtk_widget_show (toggle);
toggle =
gtk_check_button_new_with_label
(_("Use the (Invisible) Bottom Layer as the Base"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
VALS.base_is_bottom_layer);
gtk_table_attach_defaults (GTK_TABLE (table), toggle, 0, 2, 5, 6);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
&VALS.base_is_bottom_layer);
gtk_widget_show (toggle);
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 6,
_("Grid Size:"), SCALE_WIDTH, 0,
VALS.grid_size, 0, 200, 1, 10, 0,
TRUE, 0, 0,
NULL, NULL);
gtk_signal_connect (GTK_OBJECT (adj), "value_changed",
GTK_SIGNAL_FUNC (gimp_int_adjustment_update),
&VALS.grid_size);
gtk_widget_show (table);
gtk_widget_show (frame);
gtk_widget_show (dlg);
gtk_main ();
gdk_flush ();
return INTERFACE.run;
}
static void
align_layers_ok_callback (GtkWidget *widget,
gpointer data)
{
INTERFACE.run = TRUE;
gtk_widget_destroy (GTK_WIDGET (data));
}
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