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gimp/app/core/gimpedit.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 "appenv.h"
#include "drawable.h"
#include "image_new.h"
#include "floating_sel.h"
#include "gdisplay.h"
#include "gimage.h"
#include "gimage_mask.h"
#include "gimpui.h"
#include "global_edit.h"
#include "layer.h"
#include "paint_funcs.h"
#include "tools.h"
#include "undo.h"
#include "config.h"
#include "libgimp/gimpintl.h"
#include "tile_manager_pvt.h"
#include "drawable_pvt.h"
typedef enum
{
PASTE,
PASTE_INTO,
PASTE_AS_NEW
} PasteAction;
/* The named paste dialog */
typedef struct _PasteNamedDlg PasteNamedDlg;
struct _PasteNamedDlg
{
GtkWidget *shell;
GtkWidget *list;
GDisplay *gdisp;
PasteAction action;
};
/* The named buffer structure... */
typedef struct _named_buffer NamedBuffer;
struct _named_buffer
{
TileManager *buf;
gchar *name;
};
/* The named buffer list */
static GSList *named_buffers = NULL;
/* The global edit buffer */
TileManager *global_buf = NULL;
/* Crop the buffer to the size of pixels with non-zero transparency */
TileManager *
crop_buffer (TileManager *tiles,
gboolean border)
{
PixelRegion PR;
TileManager *new_tiles;
gint bytes, alpha;
guchar *data;
gint empty;
gint x1, y1, x2, y2;
gint x, y;
gint ex, ey;
gint found;
void *pr;
guchar black[MAX_CHANNELS] = { 0, 0, 0, 0 };
bytes = tiles->bpp;
alpha = bytes - 1;
/* go through and calculate the bounds */
x1 = tiles->width;
y1 = tiles->height;
x2 = 0;
y2 = 0;
pixel_region_init (&PR, tiles, 0, 0, x1, y1, FALSE);
for (pr = pixel_regions_register (1, &PR); pr != NULL; pr = pixel_regions_process (pr))
{
data = PR.data + alpha;
ex = PR.x + PR.w;
ey = PR.y + PR.h;
for (y = PR.y; y < ey; y++)
{
found = FALSE;
for (x = PR.x; x < ex; x++, data+=bytes)
if (*data)
{
if (x < x1)
x1 = x;
if (x > x2)
x2 = x;
found = TRUE;
}
if (found)
{
if (y < y1)
y1 = y;
if (y > y2)
y2 = y;
}
}
}
x2 = CLAMP (x2 + 1, 0, tiles->width);
y2 = CLAMP (y2 + 1, 0, tiles->height);
empty = (x1 == tiles->width && y1 == tiles->height);
/* If there are no visible pixels, return NULL */
if (empty)
new_tiles = NULL;
/* If no cropping, return original buffer */
else if (x1 == 0 && y1 == 0 && x2 == tiles->width &&
y2 == tiles->height && border == 0)
new_tiles = tiles;
/* Otherwise, crop the original area */
else
{
PixelRegion srcPR, destPR;
int new_width, new_height;
new_width = (x2 - x1) + border * 2;
new_height = (y2 - y1) + border * 2;
new_tiles = tile_manager_new (new_width, new_height, bytes);
/* If there is a border, make sure to clear the new tiles first */
if (border)
{
pixel_region_init (&destPR, new_tiles, 0, 0, new_width, border, TRUE);
color_region (&destPR, black);
pixel_region_init (&destPR, new_tiles, 0, border, border, (y2 - y1), TRUE);
color_region (&destPR, black);
pixel_region_init (&destPR, new_tiles, new_width - border, border, border, (y2 - y1), TRUE);
color_region (&destPR, black);
pixel_region_init (&destPR, new_tiles, 0, new_height - border, new_width, border, TRUE);
color_region (&destPR, black);
}
pixel_region_init (&srcPR, tiles, x1, y1, (x2 - x1), (y2 - y1), FALSE);
pixel_region_init (&destPR, new_tiles, border, border, (x2 - x1), (y2 - y1), TRUE);
copy_region (&srcPR, &destPR);
new_tiles->x = x1;
new_tiles->y = y1;
}
return new_tiles;
}
TileManager *
edit_cut (GImage *gimage,
GimpDrawable *drawable)
{
TileManager *cut;
TileManager *cropped_cut;
gint empty;
if (!gimage || drawable == NULL)
return NULL;
/* Start a group undo */
undo_push_group_start (gimage, EDIT_CUT_UNDO);
/* See if the gimage mask is empty */
empty = gimage_mask_is_empty (gimage);
/* Next, cut the mask portion from the gimage */
cut = gimage_mask_extract (gimage, drawable, TRUE, FALSE);
/* Only crop if the gimage mask wasn't empty */
if (cut && empty == FALSE)
{
cropped_cut = crop_buffer (cut, 0);
if (cropped_cut != cut)
tile_manager_destroy (cut);
}
else if (cut)
cropped_cut = cut;
else
cropped_cut = NULL;
if (cut)
image_new_reset_current_cut_buffer ();
/* end the group undo */
undo_push_group_end (gimage);
if (cropped_cut)
{
/* Free the old global edit buffer */
if (global_buf)
tile_manager_destroy (global_buf);
/* Set the global edit buffer */
global_buf = cropped_cut;
return cropped_cut;
}
else
return NULL;
}
TileManager *
edit_copy (GImage *gimage,
GimpDrawable *drawable)
{
TileManager *copy;
TileManager *cropped_copy;
gint empty;
if (!gimage || drawable == NULL)
return NULL;
/* See if the gimage mask is empty */
empty = gimage_mask_is_empty (gimage);
/* First, copy the masked portion of the gimage */
copy = gimage_mask_extract (gimage, drawable, FALSE, FALSE);
/* Only crop if the gimage mask wasn't empty */
if (copy && empty == FALSE)
{
cropped_copy = crop_buffer (copy, 0);
if (cropped_copy != copy)
tile_manager_destroy (copy);
}
else if (copy)
cropped_copy = copy;
else
cropped_copy = NULL;
if(copy)
image_new_reset_current_cut_buffer();
if (cropped_copy)
{
/* Free the old global edit buffer */
if (global_buf)
tile_manager_destroy (global_buf);
/* Set the global edit buffer */
global_buf = cropped_copy;
return cropped_copy;
}
else
return NULL;
}
GimpLayer *
edit_paste (GImage *gimage,
GimpDrawable *drawable,
TileManager *paste,
gboolean paste_into)
{
Layer *layer;
gint x1, y1, x2, y2;
gint cx, cy;
/* Make a new layer: iff drawable == NULL,
* user is pasting into an empty display.
*/
if (drawable != NULL)
layer = layer_new_from_tiles (gimage,
gimp_drawable_type_with_alpha (drawable),
paste,
_("Pasted Layer"),
OPAQUE_OPACITY, NORMAL_MODE);
else
layer = layer_new_from_tiles (gimage,
gimp_image_base_type_with_alpha (gimage),
paste,
_("Pasted Layer"),
OPAQUE_OPACITY, NORMAL_MODE);
if (layer)
{
/* Start a group undo */
undo_push_group_start (gimage, EDIT_PASTE_UNDO);
/* Set the offsets to the center of the image */
if (drawable != NULL)
{
drawable_offsets (drawable, &cx, &cy);
drawable_mask_bounds (drawable, &x1, &y1, &x2, &y2);
cx += (x1 + x2) >> 1;
cy += (y1 + y2) >> 1;
}
else
{
cx = gimage->width >> 1;
cy = gimage->height >> 1;
}
GIMP_DRAWABLE (layer)->offset_x = cx - (GIMP_DRAWABLE (layer)->width >> 1);
GIMP_DRAWABLE (layer)->offset_y = cy - (GIMP_DRAWABLE (layer)->height >> 1);
/* If there is a selection mask clear it--
* this might not always be desired, but in general,
* it seems like the correct behavior.
*/
if (! gimage_mask_is_empty (gimage) && !paste_into)
channel_clear (gimage_get_mask (gimage));
/* if there's a drawable, add a new floating selection */
if (drawable != NULL)
{
floating_sel_attach (layer, drawable);
}
else
{
gimp_drawable_set_gimage (GIMP_DRAWABLE (layer), gimage);
gimage_add_layer (gimage, layer, 0);
}
/* end the group undo */
undo_push_group_end (gimage);
return layer;
}
return NULL;
}
gboolean
edit_paste_as_new (GImage *invoke,
TileManager *paste)
{
GImage *gimage;
Layer *layer;
GDisplay *gdisp;
if (!global_buf)
return FALSE;
/* create a new image (always of type RGB) */
gimage = gimage_new (paste->width, paste->height, RGB);
gimage_disable_undo (gimage);
gimp_image_set_resolution (gimage, invoke->xresolution, invoke->yresolution);
gimp_image_set_unit (gimage, invoke->unit);
layer = layer_new_from_tiles (gimage,
gimp_image_base_type_with_alpha (gimage),
paste,
_("Pasted Layer"),
OPAQUE_OPACITY, NORMAL_MODE);
if (layer)
{
/* add the new layer to the image */
gimp_drawable_set_gimage (GIMP_DRAWABLE (layer), gimage);
gimage_add_layer (gimage, layer, 0);
gimage_enable_undo (gimage);
gdisp = gdisplay_new (gimage, 0x0101);
gimp_context_set_display (gimp_context_get_user (), gdisp);
return TRUE;
}
return FALSE;
}
gboolean
edit_clear (GImage *gimage,
GimpDrawable *drawable)
{
TileManager *buf_tiles;
PixelRegion bufPR;
gint x1, y1, x2, y2;
guchar col[MAX_CHANNELS];
if (!gimage || drawable == NULL)
return FALSE;
gimage_get_background (gimage, drawable, col);
if (drawable_has_alpha (drawable))
col [drawable_bytes (drawable) - 1] = OPAQUE_OPACITY;
drawable_mask_bounds (drawable, &x1, &y1, &x2, &y2);
if (!(x2 - x1) || !(y2 - y1))
return TRUE; /* nothing to do, but the clear succeded */
buf_tiles = tile_manager_new ((x2 - x1), (y2 - y1), drawable_bytes (drawable));
pixel_region_init (&bufPR, buf_tiles, 0, 0, (x2 - x1), (y2 - y1), TRUE);
color_region (&bufPR, col);
pixel_region_init (&bufPR, buf_tiles, 0, 0, (x2 - x1), (y2 - y1), FALSE);
gimage_apply_image (gimage, drawable, &bufPR, 1, OPAQUE_OPACITY,
ERASE_MODE, NULL, x1, y1);
/* update the image */
drawable_update (drawable, x1, y1, (x2 - x1), (y2 - y1));
/* free the temporary tiles */
tile_manager_destroy (buf_tiles);
return TRUE;
}
gboolean
edit_fill (GImage *gimage,
GimpDrawable *drawable)
{
TileManager *buf_tiles;
PixelRegion bufPR;
gint x1, y1, x2, y2;
guchar col[MAX_CHANNELS];
if (!gimage || drawable == NULL)
return FALSE;
gimage_get_background (gimage, drawable, col);
if (drawable_has_alpha (drawable))
col [drawable_bytes (drawable) - 1] = OPAQUE_OPACITY;
drawable_mask_bounds (drawable, &x1, &y1, &x2, &y2);
if (!(x2 - x1) || !(y2 - y1))
return TRUE; /* nothing to do, but the fill succeded */
buf_tiles = tile_manager_new ((x2 - x1), (y2 - y1), drawable_bytes (drawable));
pixel_region_init (&bufPR, buf_tiles, 0, 0, (x2 - x1), (y2 - y1), TRUE);
color_region (&bufPR, col);
pixel_region_init (&bufPR, buf_tiles, 0, 0, (x2 - x1), (y2 - y1), FALSE);
gimage_apply_image (gimage, drawable, &bufPR, 1, OPAQUE_OPACITY,
NORMAL_MODE, NULL, x1, y1);
/* update the image */
drawable_update (drawable, x1, y1, (x2 - x1), (y2 - y1));
/* free the temporary tiles */
tile_manager_destroy (buf_tiles);
return TRUE;
}
gboolean
global_edit_cut (GDisplay *gdisp)
{
/* stop any active tool */
active_tool_control (HALT, gdisp);
if (!edit_cut (gdisp->gimage, gimage_active_drawable (gdisp->gimage)))
return FALSE;
/* flush the display */
gdisplays_flush ();
return TRUE;
}
gboolean
global_edit_copy (GDisplay *gdisp)
{
if (!edit_copy (gdisp->gimage, gimage_active_drawable (gdisp->gimage)))
return FALSE;
return TRUE;
}
gboolean
global_edit_paste (GDisplay *gdisp,
gboolean paste_into)
{
/* stop any active tool */
active_tool_control (HALT, gdisp);
if (!edit_paste (gdisp->gimage, gimage_active_drawable (gdisp->gimage),
global_buf, paste_into))
return FALSE;
/* flush the display */
gdisplays_update_title (gdisp->gimage);
gdisplays_flush ();
return TRUE;
}
gboolean
global_edit_paste_as_new (GDisplay *gdisp)
{
if (!global_buf)
return FALSE;
/* stop any active tool */
active_tool_control (HALT, gdisp);
return edit_paste_as_new (gdisp->gimage, global_buf);
}
void
global_edit_free (void)
{
if (global_buf)
tile_manager_destroy (global_buf);
global_buf = NULL;
}
/*********************************************/
/* Named buffer operations */
static void
set_list_of_named_buffers (GtkWidget *list_widget)
{
GSList *list;
NamedBuffer *nb;
GtkWidget *list_item;
gtk_list_clear_items (GTK_LIST (list_widget), 0, -1);
for (list = named_buffers; list; list = g_slist_next (list))
{
nb = (NamedBuffer *) list->data;
list_item = gtk_list_item_new_with_label (nb->name);
gtk_container_add (GTK_CONTAINER (list_widget), list_item);
gtk_object_set_user_data (GTK_OBJECT (list_item), (gpointer) nb);
gtk_widget_show (list_item);
}
}
static void
named_buffer_paste_foreach (GtkWidget *widget,
gpointer data)
{
PasteNamedDlg *pn_dlg;
NamedBuffer *nb;
if (widget->state == GTK_STATE_SELECTED)
{
pn_dlg = (PasteNamedDlg *) data;
nb = (NamedBuffer *) gtk_object_get_user_data (GTK_OBJECT (widget));
switch (pn_dlg->action)
{
case PASTE:
edit_paste (pn_dlg->gdisp->gimage,
gimage_active_drawable (pn_dlg->gdisp->gimage),
nb->buf, FALSE);
break;
case PASTE_INTO:
edit_paste (pn_dlg->gdisp->gimage,
gimage_active_drawable (pn_dlg->gdisp->gimage),
nb->buf, TRUE);
break;
case PASTE_AS_NEW:
edit_paste_as_new (pn_dlg->gdisp->gimage, nb->buf);
break;
default:
break;
}
}
}
static void
named_buffer_paste_callback (GtkWidget *widget,
gpointer data)
{
PasteNamedDlg *pn_dlg;
pn_dlg = (PasteNamedDlg *) data;
pn_dlg->action = PASTE_INTO;
gtk_container_foreach ((GtkContainer *) pn_dlg->list,
named_buffer_paste_foreach, data);
/* Destroy the box */
gtk_widget_destroy (pn_dlg->shell);
g_free (pn_dlg);
/* flush the display */
gdisplays_flush ();
}
static void
named_buffer_paste_into_callback (GtkWidget *widget,
gpointer data)
{
PasteNamedDlg *pn_dlg;
pn_dlg = (PasteNamedDlg *) data;
pn_dlg->action = PASTE_INTO;
gtk_container_foreach ((GtkContainer *) pn_dlg->list,
named_buffer_paste_foreach, data);
/* Destroy the box */
gtk_widget_destroy (pn_dlg->shell);
g_free (pn_dlg);
/* flush the display */
gdisplays_flush ();
}
static void
named_buffer_paste_as_new_callback (GtkWidget *widget,
gpointer data)
{
PasteNamedDlg *pn_dlg;
pn_dlg = (PasteNamedDlg *) data;
pn_dlg->action = PASTE_AS_NEW;
gtk_container_foreach ((GtkContainer *) pn_dlg->list,
named_buffer_paste_foreach, data);
/* Destroy the box */
gtk_widget_destroy (pn_dlg->shell);
g_free (pn_dlg);
/* flush the display */
gdisplays_flush ();
}
static void
named_buffer_delete_foreach (GtkWidget *widget,
gpointer data)
{
PasteNamedDlg *pn_dlg;
NamedBuffer *nb;
if (widget->state == GTK_STATE_SELECTED)
{
pn_dlg = (PasteNamedDlg *) data;
nb = (NamedBuffer *) gtk_object_get_user_data (GTK_OBJECT (widget));
named_buffers = g_slist_remove (named_buffers, (void *) nb);
g_free (nb->name);
tile_manager_destroy (nb->buf);
g_free (nb);
}
}
static void
named_buffer_delete_callback (GtkWidget *widget,
gpointer data)
{
PasteNamedDlg *pn_dlg;
pn_dlg = (PasteNamedDlg *) data;
gtk_container_foreach ((GtkContainer*) pn_dlg->list,
named_buffer_delete_foreach, data);
set_list_of_named_buffers (pn_dlg->list);
}
static void
named_buffer_cancel_callback (GtkWidget *widget,
gpointer data)
{
PasteNamedDlg *pn_dlg;
pn_dlg = (PasteNamedDlg *) data;
/* Destroy the box */
gtk_widget_destroy (pn_dlg->shell);
g_free (pn_dlg);
}
static void
paste_named_buffer (GDisplay *gdisp)
{
PasteNamedDlg *pn_dlg;
GtkWidget *vbox;
GtkWidget *label;
GtkWidget *listbox;
GtkWidget *bbox;
GtkWidget *button;
gint i;
static gchar *paste_action_labels[] =
{
N_("Paste"),
N_("Paste Into"),
N_("Paste as New"),
};
static GtkSignalFunc paste_action_functions[] =
{
named_buffer_paste_callback,
named_buffer_paste_into_callback,
named_buffer_paste_as_new_callback,
};
pn_dlg = g_new (PasteNamedDlg, 1);
pn_dlg->gdisp = gdisp;
pn_dlg->shell =
gimp_dialog_new (_("Paste Named Buffer"), "paste_named_buffer",
gimp_standard_help_func,
"dialogs/paste_named.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
_("Delete"), named_buffer_delete_callback,
pn_dlg, NULL, NULL, FALSE, FALSE,
_("Cancel"), named_buffer_cancel_callback,
pn_dlg, NULL, NULL, TRUE, TRUE,
NULL);
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 1);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (pn_dlg->shell)->vbox), vbox);
gtk_widget_show (vbox);
label = gtk_label_new (_("Select a buffer to paste:"));
gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, FALSE, 0);
gtk_widget_show (label);
listbox = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (listbox),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_box_pack_start (GTK_BOX (vbox), listbox, TRUE, TRUE, 0);
gtk_widget_set_usize (listbox, 125, 150);
gtk_widget_show (listbox);
pn_dlg->list = gtk_list_new ();
gtk_list_set_selection_mode (GTK_LIST (pn_dlg->list), GTK_SELECTION_BROWSE);
gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (listbox),
pn_dlg->list);
set_list_of_named_buffers (pn_dlg->list);
gtk_widget_show (pn_dlg->list);
bbox = gtk_hbutton_box_new ();
gtk_container_set_border_width (GTK_CONTAINER (bbox), 6);
gtk_button_box_set_spacing (GTK_BUTTON_BOX (bbox), 2);
gtk_box_pack_start (GTK_BOX (vbox), bbox, FALSE, FALSE, 0);
for (i = 0; i < 3; i++)
{
button = gtk_button_new_with_label (gettext (paste_action_labels[i]));
gtk_container_add (GTK_CONTAINER (bbox), button);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) paste_action_functions[i],
pn_dlg);
gtk_widget_show (button);
}
gtk_widget_show (bbox);
gtk_widget_show (pn_dlg->shell);
}
static void
new_named_buffer (TileManager *tiles,
gchar *name)
{
PixelRegion srcPR, destPR;
NamedBuffer *nb;
if (! tiles) return;
nb = (NamedBuffer *) g_malloc (sizeof (NamedBuffer));
nb->buf = tile_manager_new (tiles->width, tiles->height, tiles->bpp);
pixel_region_init (&srcPR, tiles, 0, 0, tiles->width, tiles->height, FALSE);
pixel_region_init (&destPR, nb->buf, 0, 0, tiles->width, tiles->height, TRUE);
copy_region (&srcPR, &destPR);
nb->name = g_strdup ((char *) name);
named_buffers = g_slist_append (named_buffers, (void *) nb);
}
static void
cut_named_buffer_callback (GtkWidget *widget,
gchar *name,
gpointer data)
{
TileManager *new_tiles;
GDisplay *gdisp;
gdisp = (GDisplay *) data;
new_tiles = edit_cut (gdisp->gimage, gimage_active_drawable (gdisp->gimage));
if (new_tiles)
new_named_buffer (new_tiles, name);
gdisplays_flush ();
}
gboolean
named_edit_cut (GDisplay *gdisp)
{
GtkWidget *qbox;
/* stop any active tool */
active_tool_control (HALT, gdisp);
qbox = gimp_query_string_box (_("Cut Named"),
gimp_standard_help_func,
"dialogs/cut_named.html",
_("Enter a name for this buffer"),
NULL,
GTK_OBJECT (gdisp->gimage), "destroy",
cut_named_buffer_callback, gdisp);
gtk_widget_show (qbox);
return TRUE;
}
static void
copy_named_buffer_callback (GtkWidget *widget,
gchar *name,
gpointer data)
{
TileManager *new_tiles;
GDisplay *gdisp;
gdisp = (GDisplay *) data;
new_tiles = edit_copy (gdisp->gimage, gimage_active_drawable (gdisp->gimage));
if (new_tiles)
new_named_buffer (new_tiles, name);
}
gboolean
named_edit_copy (GDisplay *gdisp)
{
GtkWidget *qbox;
qbox = gimp_query_string_box (_("Copy Named"),
gimp_standard_help_func,
"dialogs/copy_named.html",
_("Enter a name for this buffer"),
NULL,
GTK_OBJECT (gdisp->gimage), "destroy",
copy_named_buffer_callback, gdisp);
gtk_widget_show (qbox);
return TRUE;
}
gboolean
named_edit_paste (GDisplay *gdisp)
{
paste_named_buffer (gdisp);
gdisplays_flush ();
return TRUE;
}
void
named_buffers_free (void)
{
GSList *list;
NamedBuffer *nb;
for (list = named_buffers; list; list = g_slist_next (list))
{
nb = (NamedBuffer *) list->data;
tile_manager_destroy (nb->buf);
g_free (nb->name);
g_free (nb);
}
g_slist_free (named_buffers);
named_buffers = NULL;
}
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