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gimp/app/bucket_fill.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 <gdk/gdkkeysyms.h>
#include "appenv.h"
#include "bucket_fill.h"
#include "cursorutil.h"
#include "drawable.h"
#include "fuzzy_select.h"
#include "gdisplay.h"
#include "gimage_mask.h"
#include "gimpui.h"
#include "interface.h"
#include "paint_funcs.h"
#include "paint_options.h"
#include "selection.h"
#include "tools.h"
#include "undo.h"
#include "libgimp/gimpintl.h"
/* the bucket fill structures */
typedef struct _BucketTool BucketTool;
struct _BucketTool
{
gint target_x; /* starting x coord */
gint target_y; /* starting y coord */
};
typedef struct _BucketOptions BucketOptions;
struct _BucketOptions
{
PaintOptions paint_options;
gdouble threshold;
gdouble threshold_d;
GtkObject *threshold_w;
gboolean sample_merged;
gboolean sample_merged_d;
GtkWidget *sample_merged_w;
BucketFillMode fill_mode;
BucketFillMode fill_mode_d;
GtkWidget *fill_mode_w[3];
};
/* the bucket fill tool options */
static BucketOptions *bucket_options = NULL;
/* local function prototypes */
static void bucket_fill_button_press (Tool *, GdkEventButton *, gpointer);
static void bucket_fill_button_release (Tool *, GdkEventButton *, gpointer);
static void bucket_fill_cursor_update (Tool *, GdkEventMotion *, gpointer);
static void bucket_fill_line_color (guchar *, guchar *, guchar *,
gboolean, gint, gint);
static void bucket_fill_line_pattern (guchar *, guchar *, TempBuf *,
gboolean, gint, gint, gint, gint);
/* functions */
static void
bucket_options_reset (void)
{
BucketOptions *options = bucket_options;
paint_options_reset ((PaintOptions *) options);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (options->sample_merged_w),
options->sample_merged_d);
gtk_adjustment_set_value (GTK_ADJUSTMENT (options->threshold_w),
options->threshold_d);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (options->fill_mode_w[options->fill_mode_d]), TRUE);
}
static BucketOptions *
bucket_options_new (void)
{
BucketOptions *options;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *label;
GtkWidget *scale;
GtkWidget *frame;
/* the new bucket fill tool options structure */
options = (BucketOptions *) g_malloc (sizeof (BucketOptions));
paint_options_init ((PaintOptions *) options,
BUCKET_FILL,
bucket_options_reset);
options->sample_merged = options->sample_merged_d = FALSE;
options->threshold = options->threshold_d = 15.0;
options->fill_mode = options->fill_mode_d = FG_BUCKET_FILL;
/* the main vbox */
vbox = ((ToolOptions *) options)->main_vbox;
/* the threshold scale */
hbox = gtk_hbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
label = gtk_label_new (_("Threshold:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 1.0);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
options->threshold_w =
gtk_adjustment_new (options->threshold_d, 1.0, 255.0, 1.0, 1.0, 0.0);
scale = gtk_hscale_new (GTK_ADJUSTMENT (options->threshold_w));
gtk_box_pack_start (GTK_BOX (hbox), scale, TRUE, TRUE, 0);
gtk_scale_set_value_pos (GTK_SCALE (scale), GTK_POS_TOP);
gtk_range_set_update_policy (GTK_RANGE (scale), GTK_UPDATE_DELAYED);
gtk_signal_connect (GTK_OBJECT (options->threshold_w), "value_changed",
GTK_SIGNAL_FUNC (gimp_double_adjustment_update),
&options->threshold);
gtk_widget_show (scale);
gtk_widget_show (hbox);
/* the sample merged toggle */
options->sample_merged_w =
gtk_check_button_new_with_label (_("Sample Merged"));
gtk_signal_connect (GTK_OBJECT (options->sample_merged_w), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
&options->sample_merged);
gtk_box_pack_start (GTK_BOX (vbox), options->sample_merged_w, FALSE, FALSE, 0);
gtk_widget_show (options->sample_merged_w);
/* fill type */
frame =
gimp_radio_group_new2 (TRUE, _("Fill Type"),
gimp_radio_button_update,
&options->fill_mode, (gpointer) options->fill_mode,
_("FG Color Fill"),
(gpointer) FG_BUCKET_FILL,
&options->fill_mode_w[0],
_("BG Color Fill"),
(gpointer) BG_BUCKET_FILL,
&options->fill_mode_w[1],
_("Pattern Fill"),
(gpointer) PATTERN_BUCKET_FILL,
&options->fill_mode_w[2],
NULL);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
return options;
}
/* bucket fill action functions */
static void
bucket_fill_button_press (Tool *tool,
GdkEventButton *bevent,
gpointer gdisp_ptr)
{
GDisplay * gdisp;
BucketTool * bucket_tool;
gboolean use_offsets;
gdisp = (GDisplay *) gdisp_ptr;
bucket_tool = (BucketTool *) tool->private;
use_offsets = (bucket_options->sample_merged) ? FALSE : TRUE;
gdisplay_untransform_coords (gdisp, bevent->x, bevent->y,
&bucket_tool->target_x,
&bucket_tool->target_y, FALSE, use_offsets);
/* Make the tool active and set the gdisplay which owns it */
gdk_pointer_grab (gdisp->canvas->window, FALSE,
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON_RELEASE_MASK,
NULL, NULL, bevent->time);
/* Make the tool active and set the gdisplay which owns it */
tool->gdisp_ptr = gdisp_ptr;
tool->state = ACTIVE;
}
static void
bucket_fill_button_release (Tool *tool,
GdkEventButton *bevent,
gpointer gdisp_ptr)
{
GDisplay * gdisp;
BucketTool * bucket_tool;
Argument *return_vals;
gint nreturn_vals;
gdisp = (GDisplay *) gdisp_ptr;
bucket_tool = (BucketTool *) tool->private;
gdk_pointer_ungrab (bevent->time);
gdk_flush ();
/* if the 3rd button isn't pressed, fill the selected region */
if (! (bevent->state & GDK_BUTTON3_MASK))
{
return_vals =
procedural_db_run_proc ("gimp_bucket_fill",
&nreturn_vals,
PDB_DRAWABLE, drawable_ID (gimage_active_drawable (gdisp->gimage)),
PDB_INT32, (gint32) bucket_options->fill_mode,
PDB_INT32, (gint32) gimp_context_get_paint_mode (NULL),
PDB_FLOAT, (gdouble) gimp_context_get_opacity (NULL) * 100,
PDB_FLOAT, (gdouble) bucket_options->threshold,
PDB_INT32, (gint32) bucket_options->sample_merged,
PDB_FLOAT, (gdouble) bucket_tool->target_x,
PDB_FLOAT, (gdouble) bucket_tool->target_y,
PDB_END);
if (return_vals && return_vals[0].value.pdb_int == PDB_SUCCESS)
gdisplays_flush ();
else
g_message (_("Bucket Fill operation failed."));
procedural_db_destroy_args (return_vals, nreturn_vals);
}
tool->state = INACTIVE;
}
static void
bucket_fill_cursor_update (Tool *tool,
GdkEventMotion *mevent,
gpointer gdisp_ptr)
{
GDisplay *gdisp;
Layer *layer;
GdkCursorType ctype = GDK_TOP_LEFT_ARROW;
gint x, y;
gint off_x, off_y;
gdisp = (GDisplay *) gdisp_ptr;
gdisplay_untransform_coords (gdisp, mevent->x, mevent->y, &x, &y, FALSE, FALSE);
if ((layer = gimage_get_active_layer (gdisp->gimage)))
{
drawable_offsets (GIMP_DRAWABLE (layer), &off_x, &off_y);
if (x >= off_x && y >= off_y &&
x < (off_x + drawable_width (GIMP_DRAWABLE(layer))) &&
y < (off_y + drawable_height (GIMP_DRAWABLE(layer))))
{
/* One more test--is there a selected region?
* if so, is cursor inside?
*/
if (gimage_mask_is_empty (gdisp->gimage))
ctype = GDK_TCROSS;
else if (gimage_mask_value (gdisp->gimage, x, y))
ctype = GDK_TCROSS;
}
}
gdisplay_install_tool_cursor (gdisp, ctype);
}
static void
bucket_fill_modifier_key_func (Tool *tool,
GdkEventKey *kevent,
gpointer gdisp_ptr)
{
switch (kevent->keyval)
{
case GDK_Alt_L: case GDK_Alt_R:
break;
case GDK_Shift_L: case GDK_Shift_R:
break;
case GDK_Control_L: case GDK_Control_R:
switch (bucket_options->fill_mode)
{
case FG_BUCKET_FILL:
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (bucket_options->fill_mode_w[BG_BUCKET_FILL]), TRUE);
break;
case BG_BUCKET_FILL:
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (bucket_options->fill_mode_w[FG_BUCKET_FILL]), TRUE);
break;
default:
break;
}
break;
}
}
void
bucket_fill (GimpImage *gimage,
GimpDrawable *drawable,
BucketFillMode fill_mode,
gint paint_mode,
gdouble opacity,
gdouble threshold,
gboolean sample_merged,
gdouble x,
gdouble y)
{
TileManager *buf_tiles;
PixelRegion bufPR, maskPR;
Channel *mask = NULL;
gint bytes;
gboolean has_alpha;
gint x1, y1, x2, y2;
guchar col [MAX_CHANNELS];
guchar *d1, *d2;
GPattern *pattern;
TempBuf *pat_buf;
gboolean new_buf = FALSE;
pat_buf = NULL;
if (fill_mode == FG_BUCKET_FILL)
gimage_get_foreground (gimage, drawable, col);
else if (fill_mode == BG_BUCKET_FILL)
gimage_get_background (gimage, drawable, col);
else if (fill_mode == PATTERN_BUCKET_FILL)
{
pattern = gimp_context_get_pattern (NULL);
if (!pattern)
{
g_message (_("No available patterns for this operation."));
return;
}
/* If the pattern doesn't match the image in terms of color type,
* transform it. (ie pattern is RGB, image is indexed)
*/
if (((pattern->mask->bytes == 3) && !drawable_color (drawable)) ||
((pattern->mask->bytes == 1) && !drawable_gray (drawable)))
{
int size;
if ((pattern->mask->bytes == 1) && drawable_color (drawable))
pat_buf = temp_buf_new (pattern->mask->width, pattern->mask->height, 3, 0, 0, NULL);
else
pat_buf = temp_buf_new (pattern->mask->width, pattern->mask->height, 1, 0, 0, NULL);
d1 = temp_buf_data (pattern->mask);
d2 = temp_buf_data (pat_buf);
size = pattern->mask->width * pattern->mask->height;
while (size--)
{
gimage_transform_color (gimage, drawable, d1, d2,
(pattern->mask->bytes == 3) ? RGB : GRAY);
d1 += pattern->mask->bytes;
d2 += pat_buf->bytes;
}
new_buf = TRUE;
}
else
pat_buf = pattern->mask;
}
gimp_add_busy_cursors ();
bytes = drawable_bytes (drawable);
has_alpha = drawable_has_alpha (drawable);
/* If there is no selection mask, the do a seed bucket
* fill...To do this, calculate a new contiguous region
*/
if (! drawable_mask_bounds (drawable, &x1, &y1, &x2, &y2))
{
mask = find_contiguous_region (gimage, drawable, TRUE, (int) threshold,
(int) x, (int) y, sample_merged);
channel_bounds (mask, &x1, &y1, &x2, &y2);
/* make sure we handle the mask correctly if it was sample-merged */
if (sample_merged)
{
int off_x, off_y;
/* Limit the channel bounds to the drawable's extents */
drawable_offsets (drawable, &off_x, &off_y);
x1 = CLAMP (x1, off_x, (off_x + drawable_width (drawable)));
y1 = CLAMP (y1, off_y, (off_y + drawable_height (drawable)));
x2 = CLAMP (x2, off_x, (off_x + drawable_width (drawable)));
y2 = CLAMP (y2, off_y, (off_y + drawable_height (drawable)));
pixel_region_init (&maskPR, drawable_data (GIMP_DRAWABLE (mask)),
x1, y1, (x2 - x1), (y2 - y1), TRUE);
/* translate mask bounds to drawable coords */
x1 -= off_x;
y1 -= off_y;
x2 -= off_x;
y2 -= off_y;
}
else
pixel_region_init (&maskPR, drawable_data (GIMP_DRAWABLE (mask)),
x1, y1, (x2 - x1), (y2 - y1), TRUE);
/* if the gimage doesn't have an alpha channel,
* make sure that the temp buf does. We need the
* alpha channel to fill with the region calculated above
*/
if (! has_alpha)
{
bytes ++;
has_alpha = TRUE;
}
}
buf_tiles = tile_manager_new ((x2 - x1), (y2 - y1), bytes);
pixel_region_init (&bufPR, buf_tiles, 0, 0, (x2 - x1), (y2 - y1), TRUE);
if (mask)
bucket_fill_region (fill_mode, &bufPR, &maskPR, col, pat_buf, x1, y1, has_alpha);
else
bucket_fill_region (fill_mode, &bufPR, NULL, col, pat_buf, x1, y1, has_alpha);
pixel_region_init (&bufPR, buf_tiles, 0, 0, (x2 - x1), (y2 - y1), FALSE);
gimage_apply_image (gimage, drawable, &bufPR, TRUE,
(opacity * 255) / 100, paint_mode, NULL, x1, y1);
/* update the image */
drawable_update (drawable, x1, y1, (x2 - x1), (y2 - y1));
/* free the temporary buffer */
tile_manager_destroy (buf_tiles);
/* free the mask */
if (mask)
channel_delete (mask);
if (new_buf)
temp_buf_free (pat_buf);
gimp_remove_busy_cursors (NULL);
}
static void
bucket_fill_line_color (guchar *buf,
guchar *mask,
guchar *col,
gboolean has_alpha,
gint bytes,
gint width)
{
gint alpha, b;
alpha = (has_alpha) ? bytes - 1 : bytes;
while (width--)
{
for (b = 0; b < alpha; b++)
buf[b] = col[b];
if (has_alpha)
{
if (mask)
buf[alpha] = *mask++;
else
buf[alpha] = OPAQUE_OPACITY;
}
buf += bytes;
}
}
static void
bucket_fill_line_pattern (guchar *buf,
guchar *mask,
TempBuf *pattern,
gboolean has_alpha,
gint bytes,
gint x,
gint y,
gint width)
{
guchar *pat, *p;
gint alpha, b;
gint i;
/* Get a pointer to the appropriate scanline of the pattern buffer */
pat = temp_buf_data (pattern) +
(y % pattern->height) * pattern->width * pattern->bytes;
alpha = (has_alpha) ? bytes - 1 : bytes;
for (i = 0; i < width; i++)
{
p = pat + ((i + x) % pattern->width) * pattern->bytes;
for (b = 0; b < alpha; b++)
buf[b] = p[b];
if (has_alpha)
{
if (mask)
buf[alpha] = *mask++;
else
buf[alpha] = OPAQUE_OPACITY;
}
buf += bytes;
}
}
void
bucket_fill_region (BucketFillMode fill_mode,
PixelRegion *bufPR,
PixelRegion *maskPR,
guchar *col,
TempBuf *pattern,
gint off_x,
gint off_y,
gboolean has_alpha)
{
guchar *s, *m;
gint y;
void *pr;
for (pr = pixel_regions_register (2, bufPR, maskPR);
pr != NULL;
pr = pixel_regions_process (pr))
{
s = bufPR->data;
if (maskPR)
m = maskPR->data;
else
m = NULL;
for (y = 0; y < bufPR->h; y++)
{
switch (fill_mode)
{
case FG_BUCKET_FILL:
case BG_BUCKET_FILL:
bucket_fill_line_color (s, m, col, has_alpha, bufPR->bytes, bufPR->w);
break;
case PATTERN_BUCKET_FILL:
bucket_fill_line_pattern (s, m, pattern, has_alpha, bufPR->bytes,
off_x + bufPR->x, off_y + y + bufPR->y, bufPR->w);
break;
}
s += bufPR->rowstride;
if (maskPR)
m += maskPR->rowstride;
}
}
}
/**********************************/
/* Global bucket fill functions */
/**********************************/
Tool *
tools_new_bucket_fill (void)
{
Tool * tool;
BucketTool * private;
/* The tool options */
if (! bucket_options)
{
bucket_options = bucket_options_new ();
tools_register (BUCKET_FILL, (ToolOptions *) bucket_options);
/* press all default buttons */
bucket_options_reset ();
}
tool = tools_new_tool (BUCKET_FILL);
private = g_new (BucketTool, 1);
tool->scroll_lock = TRUE; /* Disallow scrolling */
tool->private = (void *) private;
tool->button_press_func = bucket_fill_button_press;
tool->button_release_func = bucket_fill_button_release;
tool->modifier_key_func = bucket_fill_modifier_key_func;
tool->cursor_update_func = bucket_fill_cursor_update;
return tool;
}
void
tools_free_bucket_fill (Tool *tool)
{
BucketTool * bucket_tool;
bucket_tool = (BucketTool *) tool->private;
g_free (bucket_tool);
}
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