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gimp/app/widgets/gimpsamplepointeditor.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpsamplepointeditor.c
* Copyright (C) 2005 Michael Natterer <mitch@gimp.org>
*
* 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 <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "core/gimp.h"
#include "core/gimpimage.h"
#include "core/gimpimage-pick-color.h"
#include "core/gimpimage-sample-points.h"
#include "gimpcolorframe.h"
#include "gimpmenufactory.h"
#include "gimpsamplepointeditor.h"
#include "gimpwidgets-utils.h"
#include "gimp-intl.h"
enum
{
PROP_0,
PROP_SAMPLE_MERGED
};
static void gimp_sample_point_editor_class_init (GimpSamplePointEditorClass *klass);
static void gimp_sample_point_editor_init (GimpSamplePointEditor *editor);
static GObject * gimp_sample_point_editor_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_sample_point_editor_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_sample_point_editor_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_sample_point_editor_dispose (GObject *object);
static void gimp_sample_point_editor_style_set (GtkWidget *widget,
GtkStyle *prev_style);
static void gimp_sample_point_editor_set_image (GimpImageEditor *editor,
GimpImage *gimage);
static void gimp_sample_point_editor_point_added (GimpImage *gimage,
GimpSamplePoint *sample_point,
GimpSamplePointEditor *editor);
static void gimp_sample_point_editor_point_removed (GimpImage *gimage,
GimpSamplePoint *sample_point,
GimpSamplePointEditor *editor);
static void gimp_sample_point_editor_point_update (GimpImage *gimage,
GimpSamplePoint *sample_point,
GimpSamplePointEditor *editor);
static void gimp_sample_point_editor_proj_update (GimpImage *gimage,
gboolean now,
gint x,
gint y,
gint width,
gint height,
GimpSamplePointEditor *editor);
static void gimp_sample_point_editor_points_changed (GimpSamplePointEditor *editor);
static void gimp_sample_point_editor_dirty (GimpSamplePointEditor *editor,
gint index);
static gboolean gimp_sample_point_editor_update (GimpSamplePointEditor *editor);
static GimpImageEditorClass *parent_class = NULL;
GType
gimp_sample_point_editor_get_type (void)
{
static GType editor_type = 0;
if (! editor_type)
{
static const GTypeInfo editor_info =
{
sizeof (GimpSamplePointEditorClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_sample_point_editor_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpSamplePointEditor),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_sample_point_editor_init,
};
editor_type = g_type_register_static (GIMP_TYPE_IMAGE_EDITOR,
"GimpSamplePointEditor",
&editor_info, 0);
}
return editor_type;
}
static void
gimp_sample_point_editor_class_init (GimpSamplePointEditorClass* klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GimpImageEditorClass *image_editor_class = GIMP_IMAGE_EDITOR_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->constructor = gimp_sample_point_editor_constructor;
object_class->get_property = gimp_sample_point_editor_get_property;
object_class->set_property = gimp_sample_point_editor_set_property;
object_class->dispose = gimp_sample_point_editor_dispose;
widget_class->style_set = gimp_sample_point_editor_style_set;
image_editor_class->set_image = gimp_sample_point_editor_set_image;
g_object_class_install_property (object_class, PROP_SAMPLE_MERGED,
g_param_spec_boolean ("sample-merged",
NULL, NULL,
TRUE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
}
static void
gimp_sample_point_editor_init (GimpSamplePointEditor *editor)
{
gint content_spacing;
gint i;
gint row = 0;
gint column = 0;
editor->sample_merged = TRUE;
gtk_widget_style_get (GTK_WIDGET (editor),
"content-spacing", &content_spacing,
NULL);
editor->table = gtk_table_new (2, 2, TRUE);
gtk_table_set_row_spacing (GTK_TABLE (editor->table), 0, content_spacing);
gtk_table_set_col_spacing (GTK_TABLE (editor->table), 0, content_spacing);
gtk_box_pack_start (GTK_BOX (editor), editor->table, FALSE, FALSE, 0);
gtk_widget_show (editor->table);
for (i = 0; i < 4; i++)
{
GtkWidget *frame;
frame = g_object_new (GIMP_TYPE_COLOR_FRAME,
"mode", GIMP_COLOR_FRAME_MODE_PIXEL,
"has-number", TRUE,
"number", i + 1,
"has-color-area", TRUE,
"sensitive", FALSE,
NULL);
gtk_table_attach (GTK_TABLE (editor->table), frame,
column, column + 1, row, row + 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (frame);
editor->color_frames[i] = frame;
column++;
if (column > 1)
{
column = 0;
row++;
}
}
}
static GObject *
gimp_sample_point_editor_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpSamplePointEditor *editor;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
editor = GIMP_SAMPLE_POINT_EDITOR (object);
return object;
}
static void
gimp_sample_point_editor_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpSamplePointEditor *editor = GIMP_SAMPLE_POINT_EDITOR (object);
switch (property_id)
{
case PROP_SAMPLE_MERGED:
gimp_sample_point_editor_set_sample_merged (editor,
g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_sample_point_editor_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpSamplePointEditor *editor = GIMP_SAMPLE_POINT_EDITOR (object);
switch (property_id)
{
case PROP_SAMPLE_MERGED:
g_value_set_boolean (value, editor->sample_merged);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_sample_point_editor_dispose (GObject *object)
{
GimpSamplePointEditor *editor = GIMP_SAMPLE_POINT_EDITOR (object);
if (editor->dirty_idle_id)
{
g_source_remove (editor->dirty_idle_id);
editor->dirty_idle_id = 0;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_sample_point_editor_style_set (GtkWidget *widget,
GtkStyle *prev_style)
{
GimpSamplePointEditor *editor = GIMP_SAMPLE_POINT_EDITOR (widget);
gint content_spacing;
if (GTK_WIDGET_CLASS (parent_class)->style_set)
GTK_WIDGET_CLASS (parent_class)->style_set (widget, prev_style);
gtk_widget_style_get (widget,
"content-spacing", &content_spacing,
NULL);
gtk_table_set_row_spacing (GTK_TABLE (editor->table), 0, content_spacing);
gtk_table_set_col_spacing (GTK_TABLE (editor->table), 0, content_spacing);
}
static void
gimp_sample_point_editor_set_image (GimpImageEditor *image_editor,
GimpImage *gimage)
{
GimpSamplePointEditor *editor = GIMP_SAMPLE_POINT_EDITOR (image_editor);
if (image_editor->gimage)
{
g_signal_handlers_disconnect_by_func (image_editor->gimage,
gimp_sample_point_editor_point_added,
editor);
g_signal_handlers_disconnect_by_func (image_editor->gimage,
gimp_sample_point_editor_point_removed,
editor);
g_signal_handlers_disconnect_by_func (image_editor->gimage,
gimp_sample_point_editor_point_update,
editor);
g_signal_handlers_disconnect_by_func (image_editor->gimage->projection,
gimp_sample_point_editor_proj_update,
editor);
}
GIMP_IMAGE_EDITOR_CLASS (parent_class)->set_image (image_editor, gimage);
if (gimage)
{
g_signal_connect (gimage, "sample-point-added",
G_CALLBACK (gimp_sample_point_editor_point_added),
editor);
g_signal_connect (gimage, "sample-point-removed",
G_CALLBACK (gimp_sample_point_editor_point_removed),
editor);
g_signal_connect (gimage, "update-sample-point",
G_CALLBACK (gimp_sample_point_editor_point_update),
editor);
g_signal_connect (gimage->projection, "update",
G_CALLBACK (gimp_sample_point_editor_proj_update),
editor);
}
gimp_sample_point_editor_points_changed (editor);
}
/* public functions */
GtkWidget *
gimp_sample_point_editor_new (GimpMenuFactory *menu_factory)
{
g_return_val_if_fail (GIMP_IS_MENU_FACTORY (menu_factory), NULL);
return g_object_new (GIMP_TYPE_SAMPLE_POINT_EDITOR,
"menu-factory", menu_factory,
"menu-identifier", "<SamplePointEditor>",
"ui-path", "/sample-point-editor-popup",
NULL);
}
void
gimp_sample_point_editor_set_sample_merged (GimpSamplePointEditor *editor,
gboolean sample_merged)
{
g_return_if_fail (GIMP_IS_SAMPLE_POINT_EDITOR (editor));
sample_merged = sample_merged ? TRUE : FALSE;
if (editor->sample_merged != sample_merged)
{
gint i;
editor->sample_merged = sample_merged;
for (i = 0; i < 4; i++)
editor->dirty[i] = TRUE;
gimp_sample_point_editor_dirty (editor, -1);
g_object_notify (G_OBJECT (editor), "sample-merged");
}
}
gboolean
gimp_sample_point_editor_get_sample_merged (GimpSamplePointEditor *editor)
{
g_return_val_if_fail (GIMP_IS_SAMPLE_POINT_EDITOR (editor), FALSE);
return editor->sample_merged;
}
/* private functions */
static void
gimp_sample_point_editor_point_added (GimpImage *gimage,
GimpSamplePoint *sample_point,
GimpSamplePointEditor *editor)
{
gimp_sample_point_editor_points_changed (editor);
}
static void
gimp_sample_point_editor_point_removed (GimpImage *gimage,
GimpSamplePoint *sample_point,
GimpSamplePointEditor *editor)
{
gimp_sample_point_editor_points_changed (editor);
}
static void
gimp_sample_point_editor_point_update (GimpImage *gimage,
GimpSamplePoint *sample_point,
GimpSamplePointEditor *editor)
{
gint i = g_list_index (gimage->sample_points, sample_point);
if (i < 4)
gimp_sample_point_editor_dirty (editor, i);
}
static void
gimp_sample_point_editor_proj_update (GimpImage *gimage,
gboolean now,
gint x,
gint y,
gint width,
gint height,
GimpSamplePointEditor *editor)
{
GimpImageEditor *image_editor = GIMP_IMAGE_EDITOR (editor);
gint n_points = 0;
GList *list;
gint i;
n_points = MIN (4, g_list_length (image_editor->gimage->sample_points));
for (i = 0, list = image_editor->gimage->sample_points;
i < n_points;
i++, list = g_list_next (list))
{
GimpSamplePoint *sample_point = list->data;
if (sample_point->x >= x && sample_point->x < (x + width) &&
sample_point->y >= y && sample_point->y < (y + height))
{
gimp_sample_point_editor_dirty (editor, i);
}
}
}
static void
gimp_sample_point_editor_points_changed (GimpSamplePointEditor *editor)
{
GimpImageEditor *image_editor = GIMP_IMAGE_EDITOR (editor);
gint n_points = 0;
gint i;
if (image_editor->gimage)
n_points = MIN (4, g_list_length (image_editor->gimage->sample_points));
for (i = 0; i < n_points; i++)
{
gtk_widget_set_sensitive (editor->color_frames[i], TRUE);
editor->dirty[i] = TRUE;
}
for (i = n_points; i < 4; i++)
{
gtk_widget_set_sensitive (editor->color_frames[i], FALSE);
gimp_color_frame_set_invalid (GIMP_COLOR_FRAME (editor->color_frames[i]));
editor->dirty[i] = FALSE;
}
if (n_points > 0)
gimp_sample_point_editor_dirty (editor, -1);
}
static void
gimp_sample_point_editor_dirty (GimpSamplePointEditor *editor,
gint index)
{
if (index >= 0)
editor->dirty[index] = TRUE;
if (editor->dirty_idle_id)
g_source_remove (editor->dirty_idle_id);
editor->dirty_idle_id =
g_idle_add ((GSourceFunc) gimp_sample_point_editor_update,
editor);
}
static gboolean
gimp_sample_point_editor_update (GimpSamplePointEditor *editor)
{
GimpImageEditor *image_editor = GIMP_IMAGE_EDITOR (editor);
gint n_points = 0;
GList *list;
gint i;
editor->dirty_idle_id = 0;
if (! image_editor->gimage)
return FALSE;
n_points = MIN (4, g_list_length (image_editor->gimage->sample_points));
for (i = 0, list = image_editor->gimage->sample_points;
i < n_points;
i++, list = g_list_next (list))
{
if (editor->dirty[i])
{
GimpSamplePoint *sample_point = list->data;
GimpColorFrame *color_frame;
GimpImageType image_type;
GimpRGB color;
gint color_index;
editor->dirty[i] = FALSE;
color_frame = GIMP_COLOR_FRAME (editor->color_frames[i]);
if (gimp_image_pick_color (image_editor->gimage, NULL,
sample_point->x,
sample_point->y,
editor->sample_merged,
FALSE, 0.0,
&image_type,
&color,
&color_index))
{
gimp_color_frame_set_color (color_frame, image_type,
&color, color_index);
}
else
{
gimp_color_frame_set_invalid (color_frame);
}
}
}
return FALSE;
}
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