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gimp/app/tools/gimpbycolorselecttool.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 <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "base/pixel-region.h"
#include "base/temp-buf.h"
#include "base/tile.h"
#include "base/tile-manager.h"
#include "paint-funcs/paint-funcs.h"
#include "core/gimpdrawable.h"
#include "core/gimpimage-mask.h"
#include "core/gimpchannel.h"
#include "core/gimpcontainer.h"
#include "core/gimpimage.h"
#include "widgets/gimpdnd.h"
#include "widgets/gimpwidgets-utils.h"
#include "gimpbycolorselecttool.h"
#include "selection_options.h"
#include "tool_options.h"
#include "tool_manager.h"
#include "gimprc.h"
#include "gdisplay.h"
#include "libgimp/gimpintl.h"
#define PREVIEW_WIDTH 256
#define PREVIEW_HEIGHT 256
#define PREVIEW_EVENT_MASK GDK_EXPOSURE_MASK | \
GDK_BUTTON_PRESS_MASK | \
GDK_ENTER_NOTIFY_MASK
typedef struct _ByColorDialog ByColorDialog;
struct _ByColorDialog
{
GtkWidget *shell;
GtkWidget *preview;
GtkWidget *gimage_name;
GtkWidget *replace_button;
GtkObject *threshold_adj;
gint threshold; /* threshold value for color select */
gint operation; /* Add, Subtract, Replace */
GimpImage *gimage; /* gimpimage which is currently under examination */
};
/* Local functions */
static void gimp_by_color_select_tool_class_init (GimpByColorSelectToolClass *klass);
static void gimp_by_color_select_tool_init (GimpByColorSelectTool *by_color_select);
static void gimp_by_color_select_tool_destroy (GtkObject *object);
static void gimp_by_color_select_tool_initialize_by_image (GimpImage *gimage);
static void by_color_select_color_drop (GtkWidget *widget,
const GimpRGB *color,
gpointer data);
/* by_color select action functions */
static void by_color_select_initialize (GimpTool *tool,
GDisplay *gdisp);
static void by_color_select_button_press (GimpTool *tool,
GdkEventButton *bevent,
GDisplay *gdisp);
static void by_color_select_button_release (GimpTool *tool,
GdkEventButton *bevent,
GDisplay *gdisp);
static void by_color_select_modifier_update (GimpTool *tool,
GdkEventKey *kevent,
GDisplay *gdisp);
static void by_color_select_cursor_update (GimpTool *tool,
GdkEventMotion *mevent,
GDisplay *gdisp);
static void by_color_select_oper_update (GimpTool *tool,
GdkEventMotion *mevent,
GDisplay *gdisp);
static void by_color_select_control (GimpTool *tool,
ToolAction action,
GDisplay *gdisp);
static void by_color_select_mask_changed (GimpImage *gimage);
static ByColorDialog * by_color_select_dialog_new (void);
static void by_color_select_render (ByColorDialog *,
GimpImage *);
static void by_color_select_draw (ByColorDialog *,
GimpImage *);
static gint by_color_select_preview_events (GtkWidget *,
GdkEventButton *,
ByColorDialog *);
static void by_color_select_invert_callback (GtkWidget *,
gpointer );
static void by_color_select_select_all_callback (GtkWidget *,
gpointer );
static void by_color_select_select_none_callback (GtkWidget *,
gpointer );
static void by_color_select_reset_callback (GtkWidget *,
gpointer );
static void by_color_select_close_callback (GtkWidget *,
gpointer );
static void by_color_select_preview_button_press (ByColorDialog *,
GdkEventButton *);
static gint is_pixel_sufficiently_different (guchar *,
guchar *,
gint ,
gint ,
gint ,
gint );
static GimpChannel * by_color_select_color (GimpImage *,
GimpDrawable *,
guchar *,
gint ,
gint ,
gint );
/* The parent class (duh!) */
static GimpSelectionToolClass *parent_class = NULL;
/* the by color selection tool options */
static SelectionOptions * by_color_options = NULL;
/* the by color selection dialog */
static ByColorDialog * by_color_dialog = NULL;
/* dnd stuff */
static GtkTargetEntry by_color_select_targets[] =
{
GIMP_TARGET_COLOR
};
static guint n_by_color_select_targets = (sizeof (by_color_select_targets) /
sizeof (by_color_select_targets[0]));
/* public functions */
void
gimp_by_color_select_tool_register (Gimp *gimp)
{
tool_manager_register_tool (gimp,
GIMP_TYPE_BY_COLOR_SELECT_TOOL,
FALSE,
"gimp:by_color_select_tool",
_("Select By Color"),
_("Select regions by color"),
_("/Tools/Selection Tools/By Color Select"), "C",
NULL, "tools/by_color_select.html",
GIMP_STOCK_TOOL_BY_COLOR_SELECT);
}
GtkType
gimp_by_color_select_tool_get_type (void)
{
static GtkType by_color_select_type = 0;
if (! by_color_select_type)
{
GtkTypeInfo by_color_select_info =
{
"GimpByColorSelectTool",
sizeof (GimpByColorSelectTool),
sizeof (GimpByColorSelectToolClass),
(GtkClassInitFunc) gimp_by_color_select_tool_class_init,
(GtkObjectInitFunc) gimp_by_color_select_tool_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL
};
by_color_select_type = gtk_type_unique (GIMP_TYPE_SELECTION_TOOL,
&by_color_select_info);
}
return by_color_select_type;
}
void
gimp_by_color_select_tool_select (GimpImage *gimage,
GimpDrawable *drawable,
guchar *color,
gint threshold,
SelectOps op,
gboolean antialias,
gboolean feather,
gdouble feather_radius,
gboolean sample_merged)
{
GimpChannel *new_mask;
gint off_x, off_y;
if (!drawable)
return;
new_mask = by_color_select_color (gimage, drawable, color,
antialias, threshold, sample_merged);
/* if applicable, replace the current selection */
if (op == SELECTION_REPLACE)
gimage_mask_clear (gimage);
else
gimage_mask_undo (gimage);
if (sample_merged)
{
off_x = 0; off_y = 0;
}
else
{
gimp_drawable_offsets (drawable, &off_x, &off_y);
}
if (feather)
gimp_channel_feather (new_mask, gimp_image_get_mask (gimage),
feather_radius,
feather_radius,
op, off_x, off_y);
else
gimp_channel_combine_mask (gimp_image_get_mask (gimage),
new_mask, op, off_x, off_y);
g_object_unref (G_OBJECT (new_mask));
}
void
gimp_by_color_select_tool_initialize_by_image (GimpImage *gimage)
{
/* update the preview window */
if (by_color_dialog)
{
by_color_dialog->gimage = gimage;
by_color_select_render (by_color_dialog, gimage);
by_color_select_draw (by_color_dialog, gimage);
}
}
/* private functions */
static void
gimp_by_color_select_tool_class_init (GimpByColorSelectToolClass *klass)
{
GtkObjectClass *object_class;
GimpToolClass *tool_class;
GimpDrawToolClass *draw_tool_class;
object_class = (GtkObjectClass *) klass;
tool_class = (GimpToolClass *) klass;
draw_tool_class = (GimpDrawToolClass *) klass;
parent_class = gtk_type_class (GIMP_TYPE_SELECTION_TOOL);
object_class->destroy = gimp_by_color_select_tool_destroy;
tool_class->initialize = by_color_select_initialize;
tool_class->button_press = by_color_select_button_press;
tool_class->button_release = by_color_select_button_release;
tool_class->cursor_update = by_color_select_cursor_update;
tool_class->modifier_key = by_color_select_modifier_update;
tool_class->oper_update = by_color_select_oper_update;
tool_class->control = by_color_select_control;
}
static void
gimp_by_color_select_tool_init (GimpByColorSelectTool *by_color_select)
{
GimpTool *tool;
GimpSelectionTool *select_tool;
tool = GIMP_TOOL (by_color_select);
select_tool = GIMP_SELECTION_TOOL (by_color_select);
if (! by_color_options)
{
by_color_options = selection_options_new (GIMP_TYPE_BY_COLOR_SELECT_TOOL,
selection_options_reset);
tool_manager_register_tool_options (GIMP_TYPE_BY_COLOR_SELECT_TOOL,
(GimpToolOptions *) by_color_options);
}
/* Temporary until we find out how to make a new one */
tool->tool_cursor = GIMP_RECT_SELECT_TOOL_CURSOR;
tool->preserve = FALSE; /* Don't preserve on drawable change */
by_color_select->x = by_color_select->y = 0;
}
static void
gimp_by_color_select_tool_destroy (GtkObject *object)
{
if (GTK_OBJECT_CLASS (parent_class)->destroy)
GTK_OBJECT_CLASS (parent_class)->destroy (object);
if (by_color_dialog)
by_color_select_close_callback(NULL, (gpointer) by_color_dialog);
}
/* by_color selection machinery */
static gint
is_pixel_sufficiently_different (guchar *col1,
guchar *col2,
gint antialias,
gint threshold,
gint bytes,
gint has_alpha)
{
gint diff;
gint max;
gint b;
gint alpha;
max = 0;
alpha = (has_alpha) ? bytes - 1 : bytes;
/* if there is an alpha channel, never select transparent regions */
if (has_alpha && col2[alpha] == 0)
return 0;
for (b = 0; b < alpha; b++)
{
diff = col1[b] - col2[b];
diff = abs (diff);
if (diff > max)
max = diff;
}
if (antialias && threshold > 0)
{
gfloat aa;
aa = 1.5 - ((gfloat) max / threshold);
if (aa <= 0)
return 0;
else if (aa < 0.5)
return (guchar) (aa * 512);
else
return 255;
}
else
{
if (max > threshold)
return 0;
else
return 255;
}
}
static GimpChannel *
by_color_select_color (GimpImage *gimage,
GimpDrawable *drawable,
guchar *color,
gboolean antialias,
gint threshold,
gboolean sample_merged)
{
/* Scan over the gimage's active layer, finding pixels within the specified
* threshold from the given R, G, & B values. If antialiasing is on,
* use the same antialiasing scheme as in fuzzy_select. Modify the gimage's
* mask to reflect the additional selection
*/
GimpChannel *mask;
PixelRegion imagePR, maskPR;
guchar *image_data;
guchar *mask_data;
guchar *idata, *mdata;
guchar rgb[MAX_CHANNELS];
gint has_alpha, indexed;
gint width, height;
gint bytes, color_bytes, alpha;
gint i, j;
gpointer pr;
gint d_type;
/* Get the image information */
if (sample_merged)
{
bytes = gimp_image_composite_bytes (gimage);
d_type = gimp_image_composite_type (gimage);
has_alpha = (d_type == RGBA_GIMAGE ||
d_type == GRAYA_GIMAGE ||
d_type == INDEXEDA_GIMAGE);
indexed = d_type == INDEXEDA_GIMAGE || d_type == INDEXED_GIMAGE;
width = gimage->width;
height = gimage->height;
pixel_region_init (&imagePR, gimp_image_composite (gimage),
0, 0, width, height, FALSE);
}
else
{
bytes = gimp_drawable_bytes (drawable);
d_type = gimp_drawable_type (drawable);
has_alpha = gimp_drawable_has_alpha (drawable);
indexed = gimp_drawable_is_indexed (drawable);
width = gimp_drawable_width (drawable);
height = gimp_drawable_height (drawable);
pixel_region_init (&imagePR, gimp_drawable_data (drawable),
0, 0, width, height, FALSE);
}
if (indexed)
{
/* indexed colors are always RGB or RGBA */
color_bytes = has_alpha ? 4 : 3;
}
else
{
/* RGB, RGBA, GRAY and GRAYA colors are shaped just like the image */
color_bytes = bytes;
}
alpha = bytes - 1;
mask = gimp_channel_new_mask (gimage, width, height);
pixel_region_init (&maskPR, gimp_drawable_data (GIMP_DRAWABLE (mask)),
0, 0, width, height, TRUE);
/* iterate over the entire image */
for (pr = pixel_regions_register (2, &imagePR, &maskPR);
pr != NULL;
pr = pixel_regions_process (pr))
{
image_data = imagePR.data;
mask_data = maskPR.data;
for (i = 0; i < imagePR.h; i++)
{
idata = image_data;
mdata = mask_data;
for (j = 0; j < imagePR.w; j++)
{
/* Get the rgb values for the color */
gimp_image_get_color (gimage, d_type, rgb, idata);
/* Plug the alpha channel in there */
if (has_alpha)
rgb[color_bytes - 1] = idata[alpha];
/* Find how closely the colors match */
*mdata++ = is_pixel_sufficiently_different (color,
rgb,
antialias,
threshold,
color_bytes,
has_alpha);
idata += bytes;
}
image_data += imagePR.rowstride;
mask_data += maskPR.rowstride;
}
}
return mask;
}
/* by_color select action functions */
static void
by_color_select_button_press (GimpTool *tool,
GdkEventButton *bevent,
GDisplay *gdisp)
{
GimpByColorSelectTool *by_color_sel;
GimpDrawTool *draw_tool;
draw_tool = GIMP_DRAW_TOOL (tool);
by_color_sel = GIMP_BY_COLOR_SELECT_TOOL (tool);
tool->drawable = gimp_image_active_drawable (gdisp->gimage);
if (!by_color_dialog)
return;
by_color_sel->x = bevent->x;
by_color_sel->y = bevent->y;
tool->state = ACTIVE;
tool->gdisp = gdisp;
/* Make sure the "by color" select dialog is visible */
if (! GTK_WIDGET_VISIBLE (by_color_dialog->shell))
gtk_widget_show (by_color_dialog->shell);
/* Update the by_color_dialog's active gdisp pointer */
/* if (by_color_dialog->gimage)
* by_color_dialog->gimage->by_color_select = FALSE;
* Temporarily commented out. Do we need to do something to replace
* this?*/
if (by_color_dialog->gimage != gdisp->gimage)
{
gdk_draw_rectangle
(by_color_dialog->preview->window,
by_color_dialog->preview->style->bg_gc[GTK_STATE_NORMAL],
TRUE,
0, 0,
by_color_dialog->preview->allocation.width,
by_color_dialog->preview->allocation.width);
}
by_color_dialog->gimage = gdisp->gimage;
/* gdisp->gimage->by_color_select = TRUE;
* Temporarily commented out - do we need something to replace this? */
gdk_pointer_grab (gdisp->canvas->window, FALSE,
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON_RELEASE_MASK,
NULL, NULL, bevent->time);
}
static void
by_color_select_button_release (GimpTool *tool,
GdkEventButton *bevent,
GDisplay *gdisp)
{
GimpByColorSelectTool *by_color_sel;
gint x, y;
GimpDrawable *drawable;
guchar *color;
gint use_offsets;
by_color_sel = GIMP_BY_COLOR_SELECT_TOOL (tool);
drawable = gimp_image_active_drawable (gdisp->gimage);
gdk_pointer_ungrab (bevent->time);
tool->state = INACTIVE;
/* First take care of the case where the user "cancels" the action */
if (! (bevent->state & GDK_BUTTON3_MASK))
{
use_offsets = (by_color_options->sample_merged) ? FALSE : TRUE;
gdisplay_untransform_coords (gdisp, by_color_sel->x, by_color_sel->y,
&x, &y, FALSE, use_offsets);
if( x >= 0 && x < gimp_drawable_width (drawable) &&
y >= 0 && y < gimp_drawable_height (drawable))
{
/* Get the start color */
if (by_color_options->sample_merged)
{
if (!(color = gimp_image_get_color_at (gdisp->gimage, x, y)))
return;
}
else
{
if (!(color = gimp_drawable_get_color_at (drawable, x, y)))
return;
}
/* select the area */
gimp_by_color_select_tool_select (gdisp->gimage, drawable, color,
by_color_dialog->threshold,
by_color_sel->operation,
by_color_options->antialias,
by_color_options->feather,
by_color_options->feather_radius,
by_color_options->sample_merged);
g_free (color);
/* show selection on all views */
gdisplays_flush ();
/* update the preview window */
by_color_select_render (by_color_dialog, gdisp->gimage);
by_color_select_draw (by_color_dialog, gdisp->gimage);
}
}
}
static void
by_color_select_cursor_update (GimpTool *tool,
GdkEventMotion *mevent,
GDisplay *gdisp)
{
GimpByColorSelectTool *by_col_sel;
GimpLayer *layer;
gint x, y;
by_col_sel = GIMP_BY_COLOR_SELECT_TOOL (tool);
gdisplay_untransform_coords (gdisp, mevent->x, mevent->y,
&x, &y, FALSE, FALSE);
if (by_color_options->sample_merged ||
((layer = gimp_image_pick_correlate_layer (gdisp->gimage, x, y)) &&
layer == gdisp->gimage->active_layer))
{
switch (by_col_sel->operation)
{
case SELECTION_ADD:
gdisplay_install_tool_cursor (gdisp,
GIMP_MOUSE_CURSOR,
GIMP_TOOL_CURSOR_NONE,
GIMP_CURSOR_MODIFIER_PLUS);
break;
case SELECTION_SUB:
gdisplay_install_tool_cursor (gdisp,
GIMP_MOUSE_CURSOR,
GIMP_TOOL_CURSOR_NONE,
GIMP_CURSOR_MODIFIER_MINUS);
break;
case SELECTION_INTERSECT:
gdisplay_install_tool_cursor (gdisp,
GIMP_MOUSE_CURSOR,
GIMP_TOOL_CURSOR_NONE,
GIMP_CURSOR_MODIFIER_INTERSECT);
break;
case SELECTION_REPLACE:
gdisplay_install_tool_cursor (gdisp,
GIMP_MOUSE_CURSOR,
GIMP_TOOL_CURSOR_NONE,
GIMP_CURSOR_MODIFIER_NONE);
break;
case SELECTION_MOVE_MASK:
gdisplay_install_tool_cursor (gdisp,
GIMP_MOUSE_CURSOR,
GIMP_RECT_SELECT_TOOL_CURSOR,
GIMP_CURSOR_MODIFIER_MOVE);
break;
case SELECTION_MOVE:
gdisplay_install_tool_cursor (gdisp,
GIMP_MOUSE_CURSOR,
GIMP_MOVE_TOOL_CURSOR,
GIMP_CURSOR_MODIFIER_NONE);
break;
case SELECTION_ANCHOR:
gdisplay_install_tool_cursor (gdisp,
GIMP_MOUSE_CURSOR,
GIMP_RECT_SELECT_TOOL_CURSOR,
GIMP_CURSOR_MODIFIER_ANCHOR);
}
return;
}
gdisplay_install_tool_cursor (gdisp,
GIMP_BAD_CURSOR,
GIMP_TOOL_CURSOR_NONE,
GIMP_CURSOR_MODIFIER_NONE);
}
static void
by_color_select_update_op_state (GimpByColorSelectTool *by_col_sel,
gint state,
GDisplay *gdisp)
{
if (tool_manager_get_active (gdisp->gimage->gimp)->state == ACTIVE)
return;
if ((state & GDK_SHIFT_MASK) &&
!(state & GDK_CONTROL_MASK))
by_col_sel->operation = SELECTION_ADD; /* add to the selection */
else if ((state & GDK_CONTROL_MASK) &&
!(state & GDK_SHIFT_MASK))
by_col_sel->operation = SELECTION_SUB; /* subtract from the selection */
else if ((state & GDK_CONTROL_MASK) &&
(state & GDK_SHIFT_MASK))
by_col_sel->operation = SELECTION_INTERSECT; /* intersect with selection */
else
if (by_color_dialog)
{
by_col_sel->operation = by_color_dialog->operation;
}
else
{
/* To be careful, set it to by_select_dialog's default */
by_col_sel->operation = SELECTION_REPLACE;
}
}
static void
by_color_select_modifier_update (GimpTool *tool,
GdkEventKey *kevent,
GDisplay *gdisp)
{
GimpByColorSelectTool *by_col_sel;
gint state;
by_col_sel = GIMP_BY_COLOR_SELECT_TOOL (tool);
state = kevent->state;
switch (kevent->keyval)
{
case GDK_Alt_L: case GDK_Alt_R:
if (state & GDK_MOD1_MASK)
state &= ~GDK_MOD1_MASK;
else
state |= GDK_MOD1_MASK;
break;
case GDK_Shift_L: case GDK_Shift_R:
if (state & GDK_SHIFT_MASK)
state &= ~GDK_SHIFT_MASK;
else
state |= GDK_SHIFT_MASK;
break;
case GDK_Control_L: case GDK_Control_R:
if (state & GDK_CONTROL_MASK)
state &= ~GDK_CONTROL_MASK;
else
state |= GDK_CONTROL_MASK;
break;
}
by_color_select_update_op_state (by_col_sel, state, gdisp);
}
static void
by_color_select_oper_update (GimpTool *tool,
GdkEventMotion *mevent,
GDisplay *gdisp)
{
GimpByColorSelectTool *by_col_sel;
by_col_sel = GIMP_BY_COLOR_SELECT_TOOL (tool);
by_color_select_update_op_state (by_col_sel, mevent->state, gdisp);
}
static void
by_color_select_control (GimpTool *tool,
ToolAction action,
GDisplay *gdisp)
{
switch (action)
{
case PAUSE:
break;
case RESUME:
break;
case HALT:
if (by_color_dialog)
by_color_select_close_callback (NULL, (gpointer) by_color_dialog);
break;
default:
break;
}
}
void
by_color_select_initialize (GimpTool *tool,
GDisplay *gdisp)
{
/* The "by color" dialog */
if (!by_color_dialog)
{
by_color_dialog = by_color_select_dialog_new ();
/* Catch the "mask_changed" signal and attach a handler that does
* stuff with it. Need to do this somewhere with the relevant
* GimpImage in context
*/
g_signal_connect (G_OBJECT (gdisp->gimage), "mask_changed",
G_CALLBACK (by_color_select_mask_changed),
NULL);
}
else
if (!GTK_WIDGET_VISIBLE (by_color_dialog->shell))
gtk_widget_show (by_color_dialog->shell);
gimp_by_color_select_tool_initialize_by_image (gdisp->gimage);
}
void by_color_select_mask_changed( GimpImage *gimage)
{
if (by_color_dialog)
gimp_by_color_select_tool_initialize_by_image (gimage );
}
/****************************/
/* Select by Color dialog */
/****************************/
static ByColorDialog *
by_color_select_dialog_new (void)
{
ByColorDialog *bcd;
GtkWidget *hbox;
GtkWidget *frame;
GtkWidget *options_box;
GtkWidget *label;
GtkWidget *util_box;
GtkWidget *slider;
GtkWidget *table;
GtkWidget *button;
bcd = g_new (ByColorDialog, 1);
bcd->gimage = NULL;
bcd->operation = SELECTION_REPLACE;
bcd->threshold = gimprc.default_threshold;
/* The shell and main vbox */
bcd->shell = gimp_dialog_new (_("By Color Selection"), "by_color_selection",
NULL, NULL,
GTK_WIN_POS_NONE,
FALSE, TRUE, FALSE,
_("Reset"), by_color_select_reset_callback,
bcd, NULL, NULL, FALSE, FALSE,
GTK_STOCK_CLOSE, by_color_select_close_callback,
bcd, NULL, NULL, TRUE, TRUE,
NULL);
/* The main hbox */
hbox = gtk_hbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 4);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (bcd->shell)->vbox), hbox);
/* The preview */
util_box = gtk_vbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (hbox), util_box, FALSE, FALSE, 0);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (util_box), frame, FALSE, FALSE, 0);
bcd->preview = gtk_preview_new (GTK_PREVIEW_GRAYSCALE);
gtk_preview_size (GTK_PREVIEW (bcd->preview), PREVIEW_WIDTH, PREVIEW_HEIGHT);
gtk_widget_set_events (bcd->preview, PREVIEW_EVENT_MASK);
gtk_container_add (GTK_CONTAINER (frame), bcd->preview);
g_signal_connect (G_OBJECT (bcd->preview), "button_press_event",
G_CALLBACK (by_color_select_preview_events),
bcd);
/* dnd colors to the image window */
gtk_drag_dest_set (bcd->preview,
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_DROP,
by_color_select_targets,
n_by_color_select_targets,
GDK_ACTION_COPY);
gimp_dnd_color_dest_set (bcd->preview, by_color_select_color_drop, bcd);
gtk_widget_show (bcd->preview);
gtk_widget_show (frame);
gtk_widget_show (util_box);
/* options box */
options_box = gtk_vbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (hbox), options_box, FALSE, FALSE, 0);
/* Create the active image label */
util_box = gtk_hbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (options_box), util_box, FALSE, FALSE, 0);
bcd->gimage_name = gtk_label_new (_("Inactive"));
gtk_box_pack_start (GTK_BOX (util_box), bcd->gimage_name, FALSE, FALSE, 0);
gtk_widget_show (bcd->gimage_name);
gtk_widget_show (util_box);
/* Create the selection mode radio box */
frame = gimp_radio_group_new2
(TRUE, _("Selection Mode"),
G_CALLBACK (gimp_radio_button_update),
&bcd->operation,
GINT_TO_POINTER (bcd->operation),
_("Replace"), GINT_TO_POINTER (SELECTION_REPLACE), &bcd->replace_button,
_("Add"), GINT_TO_POINTER (SELECTION_ADD), NULL,
_("Subtract"), GINT_TO_POINTER (SELECTION_SUB), NULL,
_("Intersect"), GINT_TO_POINTER (SELECTION_INTERSECT), NULL,
NULL);
gtk_box_pack_start (GTK_BOX (options_box), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
/* Create the opacity scale widget */
util_box = gtk_vbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (options_box), util_box, FALSE, FALSE, 0);
label = gtk_label_new (_("Fuzziness Threshold"));
gtk_box_pack_start (GTK_BOX (util_box), label, FALSE, FALSE, 2);
gtk_widget_show (label);
gtk_widget_show (util_box);
bcd->threshold_adj =
gtk_adjustment_new (bcd->threshold, 0.0, 255.0, 1.0, 1.0, 0.0);
slider = gtk_hscale_new (GTK_ADJUSTMENT (bcd->threshold_adj));
gtk_box_pack_start (GTK_BOX (util_box), slider, TRUE, TRUE, 0);
gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
g_signal_connect (G_OBJECT (bcd->threshold_adj), "value_changed",
G_CALLBACK (gimp_int_adjustment_update),
&bcd->threshold);
gtk_widget_show (slider);
frame = gtk_frame_new (_("Selection"));
gtk_box_pack_end (GTK_BOX (options_box), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
table = gtk_table_new (2, 2, TRUE);
gtk_container_set_border_width (GTK_CONTAINER (table), 2);
gtk_table_set_col_spacings (GTK_TABLE (table), 2);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_widget_show (table);
button = gtk_button_new_with_label (_("Invert"));
gtk_table_attach_defaults (GTK_TABLE (table), button, 0, 2, 0, 1);
gtk_widget_show (button);
g_signal_connect (G_OBJECT (button), "clicked",
G_CALLBACK (by_color_select_invert_callback),
bcd);
button = gtk_button_new_with_label (_("All"));
gtk_table_attach_defaults (GTK_TABLE (table), button, 0, 1, 1, 2);
gtk_widget_show (button);
g_signal_connect (G_OBJECT (button), "clicked",
G_CALLBACK (by_color_select_select_all_callback),
bcd);
button = gtk_button_new_with_label (_("None"));
gtk_table_attach_defaults (GTK_TABLE (table), button, 1, 2, 1, 2);
gtk_widget_show (button);
g_signal_connect (G_OBJECT (button), "clicked",
G_CALLBACK (by_color_select_select_none_callback),
bcd);
gtk_widget_show (options_box);
gtk_widget_show (hbox);
gtk_widget_show (bcd->shell);
g_signal_connect_swapped (G_OBJECT (bcd->shell), "unmap_event",
G_CALLBACK (gimp_dialog_hide),
bcd->shell);
return bcd;
}
static void
by_color_select_render (ByColorDialog *bcd,
GimpImage *gimage)
{
GimpChannel *mask;
MaskBuf *scaled_buf = NULL;
guchar *buf;
PixelRegion srcPR, destPR;
guchar *src;
gint subsample;
gint width, height;
gint srcwidth;
gint i;
gint scale;
mask = gimp_image_get_mask (gimage);
if ((gimp_drawable_width (GIMP_DRAWABLE(mask)) > PREVIEW_WIDTH) ||
(gimp_drawable_height (GIMP_DRAWABLE(mask)) > PREVIEW_HEIGHT))
{
if (((float) gimp_drawable_width (GIMP_DRAWABLE (mask)) / (float) PREVIEW_WIDTH) >
((float) gimp_drawable_height (GIMP_DRAWABLE (mask)) / (float) PREVIEW_HEIGHT))
{
width = PREVIEW_WIDTH;
height = ((gimp_drawable_height (GIMP_DRAWABLE (mask)) * PREVIEW_WIDTH) /
gimp_drawable_width (GIMP_DRAWABLE (mask)));
}
else
{
width = ((gimp_drawable_width (GIMP_DRAWABLE (mask)) * PREVIEW_HEIGHT) /
gimp_drawable_height (GIMP_DRAWABLE (mask)));
height = PREVIEW_HEIGHT;
}
scale = TRUE;
}
else
{
width = gimp_drawable_width (GIMP_DRAWABLE (mask));
height = gimp_drawable_height (GIMP_DRAWABLE (mask));
scale = FALSE;
}
if ((width != bcd->preview->requisition.width) ||
(height != bcd->preview->requisition.height))
gtk_preview_size (GTK_PREVIEW (bcd->preview), width, height);
/* clear the image buf */
buf = g_new0 (guchar, bcd->preview->requisition.width);
for (i = 0; i < bcd->preview->requisition.height; i++)
gtk_preview_draw_row (GTK_PREVIEW (bcd->preview), buf,
0, i, bcd->preview->requisition.width);
g_free (buf);
/* if the mask is empty, no need to scale and update again */
if (gimage_mask_is_empty (gimage))
return;
if (scale)
{
/* calculate 'acceptable' subsample */
subsample = 1;
while ((width * (subsample + 1) * 2 < gimp_drawable_width (GIMP_DRAWABLE (mask))) &&
(height * (subsample + 1) * 2 < gimp_drawable_height (GIMP_DRAWABLE (mask))))
subsample = subsample + 1;
pixel_region_init (&srcPR, gimp_drawable_data (GIMP_DRAWABLE (mask)),
0, 0,
gimp_drawable_width (GIMP_DRAWABLE (mask)),
gimp_drawable_height (GIMP_DRAWABLE (mask)), FALSE);
scaled_buf = mask_buf_new (width, height);
destPR.bytes = 1;
destPR.x = 0;
destPR.y = 0;
destPR.w = width;
destPR.h = height;
destPR.rowstride = srcPR.bytes * width;
destPR.data = mask_buf_data (scaled_buf);
destPR.tiles = NULL;
subsample_region (&srcPR, &destPR, subsample);
}
else
{
pixel_region_init (&srcPR, gimp_drawable_data (GIMP_DRAWABLE (mask)),
0, 0,
gimp_drawable_width (GIMP_DRAWABLE (mask)),
gimp_drawable_height (GIMP_DRAWABLE (mask)), FALSE);
scaled_buf = mask_buf_new (width, height);
destPR.bytes = 1;
destPR.x = 0;
destPR.y = 0;
destPR.w = width;
destPR.h = height;
destPR.rowstride = srcPR.bytes * width;
destPR.data = mask_buf_data (scaled_buf);
destPR.tiles = NULL;
copy_region (&srcPR, &destPR);
}
src = mask_buf_data (scaled_buf);
srcwidth = scaled_buf->width;
for (i = 0; i < height; i++)
{
gtk_preview_draw_row (GTK_PREVIEW (bcd->preview), src, 0, i, width);
src += srcwidth;
}
mask_buf_free (scaled_buf);
}
static void
by_color_select_draw (ByColorDialog *bcd,
GimpImage *gimage)
{
/* Draw the image buf to the preview window */
gtk_widget_draw (bcd->preview, NULL);
/* Update the gimage label to reflect the displayed gimage name */
gtk_label_set_text (GTK_LABEL (bcd->gimage_name),
g_basename (gimp_image_filename (gimage)));
}
static gint
by_color_select_preview_events (GtkWidget *widget,
GdkEventButton *bevent,
ByColorDialog *bcd)
{
switch (bevent->type)
{
case GDK_BUTTON_PRESS:
by_color_select_preview_button_press (bcd, bevent);
break;
default:
break;
}
return FALSE;
}
static void
by_color_select_reset_callback (GtkWidget *widget,
gpointer data)
{
ByColorDialog *bcd;
bcd = (ByColorDialog *) data;
gtk_widget_activate (bcd->replace_button);
gtk_adjustment_set_value (GTK_ADJUSTMENT (bcd->threshold_adj),
gimprc.default_threshold);
}
static void
by_color_select_invert_callback (GtkWidget *widget,
gpointer data)
{
ByColorDialog *bcd;
bcd = (ByColorDialog *) data;
if (!bcd->gimage)
return;
/* check if the image associated to the mask still exists */
if (! gimp_drawable_gimage (GIMP_DRAWABLE (gimp_image_get_mask (bcd->gimage))))
return;
/* invert the mask */
gimage_mask_invert (bcd->gimage);
/* show selection on all views */
gdisplays_flush ();
/* update the preview window */
by_color_select_render (bcd, bcd->gimage);
by_color_select_draw (bcd, bcd->gimage);
}
static void
by_color_select_select_all_callback (GtkWidget *widget,
gpointer data)
{
ByColorDialog *bcd;
bcd = (ByColorDialog *) data;
if (!bcd->gimage)
return;
/* check if the image associated to the mask still exists */
if (! gimp_drawable_gimage (GIMP_DRAWABLE (gimp_image_get_mask (bcd->gimage))))
return;
/* fill the mask */
gimage_mask_all (bcd->gimage);
/* show selection on all views */
gdisplays_flush ();
/* update the preview window */
by_color_select_render (bcd, bcd->gimage);
by_color_select_draw (bcd, bcd->gimage);
}
static void
by_color_select_select_none_callback (GtkWidget *widget,
gpointer data)
{
ByColorDialog *bcd;
bcd = (ByColorDialog *) data;
if (!bcd->gimage)
return;
/* check if the image associated to the mask still exists */
if (! gimp_drawable_gimage (GIMP_DRAWABLE (gimp_image_get_mask (bcd->gimage))))
return;
/* reset the mask */
gimage_mask_clear (bcd->gimage);
/* show selection on all views */
gdisplays_flush ();
/* update the preview window */
by_color_select_render (bcd, bcd->gimage);
by_color_select_draw (bcd, bcd->gimage);
}
static void
by_color_select_close_callback (GtkWidget *widget,
gpointer data)
{
ByColorDialog *bcd;
bcd = (ByColorDialog *) data;
gimp_dialog_hide (bcd->shell);
/* if (bcd->gimage && gimp_container_have (image_context,
* GIMP_OBJECT (bcd->gimage)))
* {
* bcd->gimage->by_color_select = FALSE;
* }
* Temporarily commented out. */
bcd->gimage = NULL;
}
static void
by_color_select_preview_button_press (ByColorDialog *bcd,
GdkEventButton *bevent)
{
gint x, y;
gboolean replace;
SelectOps operation;
GimpDrawable *drawable;
Tile *tile;
guchar *col;
if (!bcd->gimage)
return;
drawable = gimp_image_active_drawable (bcd->gimage);
/* check if the gimage associated to the drawable still exists */
if (! gimp_drawable_gimage (drawable))
return;
/* Defaults */
replace = FALSE;
operation = SELECTION_REPLACE;
/* Based on modifiers, and the "by color" dialog's selection mode */
if ((bevent->state & GDK_SHIFT_MASK) &&
!(bevent->state & GDK_CONTROL_MASK))
operation = SELECTION_ADD;
else if ((bevent->state & GDK_CONTROL_MASK) &&
!(bevent->state & GDK_SHIFT_MASK))
operation = SELECTION_SUB;
else if ((bevent->state & GDK_CONTROL_MASK) &&
(bevent->state & GDK_SHIFT_MASK))
operation = SELECTION_INTERSECT;
else
operation = by_color_dialog->operation;
/* Find x, y and modify selection */
/* Get the start color */
if (by_color_options->sample_merged)
{
x = bcd->gimage->width * bevent->x / bcd->preview->requisition.width;
y = bcd->gimage->height * bevent->y / bcd->preview->requisition.height;
if (x < 0 || y < 0 || x >= bcd->gimage->width || y >= bcd->gimage->height)
return;
tile = tile_manager_get_tile (gimp_image_composite (bcd->gimage),
x, y, TRUE, FALSE);
col = tile_data_pointer (tile, x % TILE_WIDTH, y % TILE_HEIGHT);
}
else
{
gint offx, offy;
gimp_drawable_offsets (drawable, &offx, &offy);
x = gimp_drawable_width (drawable) * bevent->x / bcd->preview->requisition.width - offx;
y = gimp_drawable_height (drawable) * bevent->y / bcd->preview->requisition.height - offy;
if (x < 0 || y < 0 ||
x >= gimp_drawable_width (drawable) || y >= gimp_drawable_height (drawable))
return;
tile = tile_manager_get_tile (gimp_drawable_data (drawable),
x, y, TRUE, FALSE);
col = tile_data_pointer (tile, x % TILE_WIDTH, y % TILE_HEIGHT);
}
gimp_by_color_select_tool_select (bcd->gimage, drawable, col,
bcd->threshold,
operation,
by_color_options->antialias,
by_color_options->feather,
by_color_options->feather_radius,
by_color_options->sample_merged);
tile_release (tile, FALSE);
/* show selection on all views */
gdisplays_flush ();
/* update the preview window */
by_color_select_render (bcd, bcd->gimage);
by_color_select_draw (bcd, bcd->gimage);
}
static void
by_color_select_color_drop (GtkWidget *widget,
const GimpRGB *color,
gpointer data)
{
GimpDrawable *drawable;
ByColorDialog *bcd;
guchar col[3];
bcd = (ByColorDialog*) data;
drawable = gimp_image_active_drawable (bcd->gimage);
gimp_rgb_get_uchar (color, &col[0], &col[1], &col[2]);
gimp_by_color_select_tool_select (bcd->gimage,
drawable,
col,
bcd->threshold,
bcd->operation,
by_color_options->antialias,
by_color_options->feather,
by_color_options->feather_radius,
by_color_options->sample_merged);
/* show selection on all views */
gdisplays_flush ();
/* update the preview window */
by_color_select_render (bcd, bcd->gimage);
by_color_select_draw (bcd, bcd->gimage);
}
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