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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 "paint-funcs/paint-funcs.h"
#include "core/gimpchannel.h"
#include "core/gimpcontainer.h"
#include "core/gimpdrawable.h"
#include "core/gimpimage.h"
#include "core/gimpimage-contiguous-region.h"
#include "core/gimpimage-mask.h"
#include "core/gimpimage-mask-select.h"
#include "core/gimpimage-projection.h"
#include "core/gimptoolinfo.h"
#include "widgets/gimpdnd.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplay-foreach.h"
#include "display/gimpdisplayshell.h"
#include "gimpbycolorselecttool.h"
#include "selection_options.h"
#include "tool_manager.h"
#include "gimprc.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;
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_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,
GimpDisplay *gdisp);
static void by_color_select_control (GimpTool *tool,
ToolAction action,
GimpDisplay *gdisp);
static void by_color_select_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void by_color_select_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void by_color_select_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void by_color_select_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *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_close_callback (GtkWidget *,
gpointer );
static void by_color_select_preview_button_press (ByColorDialog *,
GdkEventButton *);
static GimpSelectionToolClass *parent_class = NULL;
static ByColorDialog *by_color_dialog = NULL;
/* dnd stuff */
static GtkTargetEntry by_color_select_targets[] =
{
GIMP_TARGET_COLOR
};
/* public functions */
void
gimp_by_color_select_tool_register (Gimp *gimp,
GimpToolRegisterCallback callback)
{
(* callback) (gimp,
GIMP_TYPE_BY_COLOR_SELECT_TOOL,
selection_options_new,
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);
}
GType
gimp_by_color_select_tool_get_type (void)
{
static GType tool_type = 0;
if (! tool_type)
{
static const GTypeInfo tool_info =
{
sizeof (GimpByColorSelectToolClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_by_color_select_tool_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpByColorSelectTool),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_by_color_select_tool_init,
};
tool_type = g_type_register_static (GIMP_TYPE_SELECTION_TOOL,
"GimpByColorSelectTool",
&tool_info, 0);
}
return tool_type;
}
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)
{
GimpToolClass *tool_class;
tool_class = GIMP_TOOL_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
tool_class->initialize = by_color_select_initialize;
tool_class->control = by_color_select_control;
tool_class->button_press = by_color_select_button_press;
tool_class->button_release = by_color_select_button_release;
tool_class->oper_update = by_color_select_oper_update;
tool_class->cursor_update = by_color_select_cursor_update;
}
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);
tool->tool_cursor = GIMP_RECT_SELECT_TOOL_CURSOR;
tool->preserve = FALSE; /* Don't preserve on drawable change */
by_color_select->x = 0;
by_color_select->y = 0;
}
static void
by_color_select_control (GimpTool *tool,
ToolAction action,
GimpDisplay *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,
GimpDisplay *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);
}
static void
by_color_select_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpByColorSelectTool *by_color_sel;
GimpDrawTool *draw_tool;
SelectionOptions *sel_options;
GimpDisplayShell *shell;
draw_tool = GIMP_DRAW_TOOL (tool);
by_color_sel = GIMP_BY_COLOR_SELECT_TOOL (tool);
sel_options = (SelectionOptions *) tool->tool_info->tool_options;
shell = GIMP_DISPLAY_SHELL (gdisp->shell);
tool->drawable = gimp_image_active_drawable (gdisp->gimage);
if (! by_color_dialog)
return;
tool->state = ACTIVE;
tool->gdisp = gdisp;
by_color_sel->x = coords->x;
by_color_sel->y = coords->y;
if (! sel_options->sample_merged)
{
gint off_x, off_y;
gimp_drawable_offsets (gimp_image_active_drawable (gdisp->gimage),
&off_x, &off_y);
by_color_sel->x -= off_x;
by_color_sel->y -= off_y;
}
/* Make sure the "by color" select dialog is visible */
if (! GTK_WIDGET_VISIBLE (by_color_dialog->shell))
gtk_widget_show (by_color_dialog->shell);
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;
}
gdk_pointer_grab (shell->canvas->window, FALSE,
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON_RELEASE_MASK,
NULL, NULL, time);
}
static void
by_color_select_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpByColorSelectTool *by_color_sel;
GimpSelectionTool *sel_tool;
SelectionOptions *sel_options;
GimpDrawable *drawable;
guchar *col;
GimpRGB color;
by_color_sel = GIMP_BY_COLOR_SELECT_TOOL (tool);
sel_tool = GIMP_SELECTION_TOOL (tool);
sel_options = (SelectionOptions *) tool->tool_info->tool_options;
drawable = gimp_image_active_drawable (gdisp->gimage);
gdk_pointer_ungrab (time);
tool->state = INACTIVE;
/* First take care of the case where the user "cancels" the action */
if (! (state & GDK_BUTTON3_MASK))
{
if (by_color_sel->x >= 0 &&
by_color_sel->y >= 0 &&
by_color_sel->x < gimp_drawable_width (drawable) &&
by_color_sel->y < gimp_drawable_height (drawable))
{
/* Get the start color */
if (sel_options->sample_merged)
{
if (!(col = gimp_image_projection_get_color_at (gdisp->gimage,
by_color_sel->x,
by_color_sel->y)))
return;
}
else
{
if (!(col = gimp_drawable_get_color_at (drawable,
by_color_sel->x,
by_color_sel->y)))
return;
}
gimp_rgba_set_uchar (&color, col[0], col[1], col[2], col[3]);
g_free (col);
/* select the area */
gimp_image_mask_select_by_color (gdisp->gimage, drawable,
sel_options->sample_merged,
&color,
sel_options->threshold,
sel_tool->op,
sel_options->antialias,
sel_options->feather,
sel_options->feather_radius,
sel_options->feather_radius);
/* 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_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpSelectionTool *sel_tool;
SelectionOptions *sel_options;
if (tool->state == ACTIVE)
return;
sel_tool = GIMP_SELECTION_TOOL (tool);
sel_options = (SelectionOptions *) tool->tool_info->tool_options;
if ((state & GDK_CONTROL_MASK) && (state & GDK_SHIFT_MASK))
{
sel_tool->op = SELECTION_INTERSECT; /* intersect with selection */
}
else if (state & GDK_SHIFT_MASK)
{
sel_tool->op = SELECTION_ADD; /* add to the selection */
}
else if (state & GDK_CONTROL_MASK)
{
sel_tool->op = SELECTION_SUB; /* subtract from the selection */
}
else
{
sel_tool->op = sel_options->op;
}
}
static void
by_color_select_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpByColorSelectTool *by_col_sel;
SelectionOptions *sel_options;
GimpDisplayShell *shell;
GimpLayer *layer;
by_col_sel = GIMP_BY_COLOR_SELECT_TOOL (tool);
sel_options = (SelectionOptions *) tool->tool_info->tool_options;
shell = GIMP_DISPLAY_SHELL (gdisp->shell);
layer = gimp_image_pick_correlate_layer (gdisp->gimage, coords->x, coords->y);
if (! sel_options->sample_merged &&
layer && layer != gdisp->gimage->active_layer)
{
gimp_display_shell_install_tool_cursor (shell,
GIMP_BAD_CURSOR,
tool->tool_cursor,
GIMP_CURSOR_MODIFIER_NONE);
}
else
{
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
}
}
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 *vbox;
GtkWidget *frame;
GtkWidget *hbox;
GtkWidget *button;
bcd = g_new (ByColorDialog, 1);
bcd->gimage = NULL;
/* 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,
"_delete_event_", by_color_select_close_callback,
bcd, NULL, NULL, TRUE, TRUE,
NULL);
gtk_dialog_set_has_separator (GTK_DIALOG (bcd->shell), FALSE);
gtk_widget_hide (GTK_DIALOG (bcd->shell)->action_area);
/* The main vbox */
vbox = gtk_vbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (bcd->shell)->vbox), vbox);
gtk_widget_show (vbox);
/* Create the active image label */
bcd->gimage_name = gtk_label_new (_("Inactive"));
gtk_misc_set_alignment (GTK_MISC (bcd->gimage_name), 0.0, 0.5);
gtk_box_pack_start (GTK_BOX (vbox), bcd->gimage_name, FALSE, FALSE, 0);
gtk_widget_show (bcd->gimage_name);
/* The preview */
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (vbox), 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,
G_N_ELEMENTS (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);
frame = gtk_frame_new (_("Selection"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
hbox = gtk_hbox_new (TRUE, 2);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 2);
gtk_container_add (GTK_CONTAINER (frame), hbox);
gtk_widget_show (hbox);
button = gtk_button_new_with_label (_("Invert"));
gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
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_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
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_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
gtk_widget_show (button);
g_signal_connect (G_OBJECT (button), "clicked",
G_CALLBACK (by_color_select_select_none_callback),
bcd);
gtk_widget_show (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 (gimp_image_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)
{
gchar *basename;
/* Draw the image buf to the preview window */
gtk_widget_draw (bcd->preview, NULL);
/* Update the gimage label to reflect the displayed gimage name */
basename = g_path_get_basename (gimp_image_get_filename (gimage));
gtk_label_set_text (GTK_LABEL (bcd->gimage_name), basename);
g_free (basename);
}
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_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 */
gimp_image_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 */
gimp_image_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 */
gimp_image_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;
gtk_widget_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)
{
GimpToolInfo *tool_info;
SelectionOptions *sel_options;
gint x, y;
gboolean replace;
SelectOps operation;
GimpDrawable *drawable;
guchar *col;
GimpRGB color;
if (! bcd->gimage)
return;
tool_info = tool_manager_get_info_by_type (bcd->gimage->gimp,
GIMP_TYPE_BY_COLOR_SELECT_TOOL);
sel_options = (SelectionOptions *) tool_info->tool_options;
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 = sel_options->op;
/* Find x, y and modify selection */
/* Get the start color */
if (sel_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;
col = gimp_image_projection_get_color_at (bcd->gimage, x, y);
}
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;
col = gimp_drawable_get_color_at (drawable, x, y);
}
gimp_rgba_set_uchar (&color, col[0], col[1], col[2], col[3]);
g_free (col);
gimp_image_mask_select_by_color (bcd->gimage, drawable,
sel_options->sample_merged,
&color,
sel_options->threshold,
operation,
sel_options->antialias,
sel_options->feather,
sel_options->feather_radius,
sel_options->feather_radius);
/* 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)
{
GimpToolInfo *tool_info;
SelectionOptions *sel_options;
GimpDrawable *drawable;
ByColorDialog *bcd;
bcd = (ByColorDialog*) data;
tool_info = tool_manager_get_info_by_type (bcd->gimage->gimp,
GIMP_TYPE_BY_COLOR_SELECT_TOOL);
sel_options = (SelectionOptions *) tool_info->tool_options;
drawable = gimp_image_active_drawable (bcd->gimage);
gimp_image_mask_select_by_color (bcd->gimage, drawable,
sel_options->sample_merged,
color,
sel_options->threshold,
sel_options->op,
sel_options->antialias,
sel_options->feather,
sel_options->feather_radius,
sel_options->feather_radius);
/* 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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