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gimp/app/widgets/gimpbrusheditor.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpbrusheditor.c
* Copyright 1998 Jay Cox <jaycox@earthlink.net>
*
* 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/gimpbrushgenerated.h"
#include "gimpbrusheditor.h"
#include "gimppreview.h"
#include "gimp-intl.h"
#define BRUSH_PREVIEW_WIDTH 128
#define BRUSH_PREVIEW_HEIGHT 96
/* local function prototypes */
static void gimp_brush_editor_class_init (GimpBrushEditorClass *klass);
static void gimp_brush_editor_init (GimpBrushEditor *editor);
static void gimp_brush_editor_set_data (GimpDataEditor *editor,
GimpData *data);
static void gimp_brush_editor_update_brush (GtkAdjustment *adjustment,
GimpBrushEditor *editor);
static GimpDataEditorClass *parent_class = NULL;
GType
gimp_brush_editor_get_type (void)
{
static GType type = 0;
if (! type)
{
static const GTypeInfo info =
{
sizeof (GimpBrushEditorClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gimp_brush_editor_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpBrushEditor),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_brush_editor_init,
};
type = g_type_register_static (GIMP_TYPE_DATA_EDITOR,
"GimpBrushEditor",
&info, 0);
}
return type;
}
static void
gimp_brush_editor_class_init (GimpBrushEditorClass *klass)
{
GimpDataEditorClass *editor_class;
editor_class = GIMP_DATA_EDITOR_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
editor_class->set_data = gimp_brush_editor_set_data;
}
static void
gimp_brush_editor_init (GimpBrushEditor *editor)
{
GtkWidget *frame;
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (editor), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
editor->preview = gimp_preview_new_full_by_types (GIMP_TYPE_PREVIEW,
GIMP_TYPE_BRUSH,
BRUSH_PREVIEW_WIDTH,
BRUSH_PREVIEW_HEIGHT, 0,
FALSE, FALSE, TRUE);
gtk_widget_set_size_request (editor->preview,
BRUSH_PREVIEW_WIDTH, BRUSH_PREVIEW_HEIGHT);
gimp_preview_set_expand (GIMP_PREVIEW (editor->preview), TRUE);
gtk_container_add (GTK_CONTAINER (frame), editor->preview);
gtk_widget_show (editor->preview);
/* table for sliders/labels */
editor->options_table = gtk_table_new (4, 3, FALSE);
gtk_table_set_row_spacings (GTK_TABLE (editor->options_table), 2);
gtk_table_set_col_spacings (GTK_TABLE (editor->options_table), 2);
gtk_box_pack_start (GTK_BOX (editor), editor->options_table, FALSE, FALSE, 0);
gtk_widget_show (editor->options_table);
/* brush radius scale */
editor->radius_data =
GTK_ADJUSTMENT (gimp_scale_entry_new (GTK_TABLE (editor->options_table),
0, 0,
_("Radius:"), -1, 5,
0.0, 1.0, 1000.0, 0.1, 1.0, 1,
TRUE, 0.0, 0.0,
NULL, NULL));
g_signal_connect (editor->radius_data, "value_changed",
G_CALLBACK (gimp_brush_editor_update_brush),
editor);
/* brush hardness scale */
editor->hardness_data =
GTK_ADJUSTMENT (gimp_scale_entry_new (GTK_TABLE (editor->options_table),
0, 1,
_("Hardness:"), -1, 5,
0.0, 0.0, 1.0, 0.01, 0.1, 2,
TRUE, 0.0, 0.0,
NULL, NULL));
g_signal_connect (editor->hardness_data, "value_changed",
G_CALLBACK (gimp_brush_editor_update_brush),
editor);
/* brush aspect ratio scale */
editor->aspect_ratio_data =
GTK_ADJUSTMENT (gimp_scale_entry_new (GTK_TABLE (editor->options_table),
0, 2,
_("Aspect Ratio:"), -1, 5,
0.0, 1.0, 20.0, 0.1, 1.0, 1,
TRUE, 0.0, 0.0,
NULL, NULL));
g_signal_connect (editor->aspect_ratio_data,"value_changed",
G_CALLBACK (gimp_brush_editor_update_brush),
editor);
/* brush angle scale */
editor->angle_data =
GTK_ADJUSTMENT (gimp_scale_entry_new (GTK_TABLE (editor->options_table),
0, 3,
_("Angle:"), -1, 5,
0.0, 0.0, 180.0, 0.1, 1.0, 1,
TRUE, 0.0, 0.0,
NULL, NULL));
g_signal_connect (editor->angle_data, "value_changed",
G_CALLBACK (gimp_brush_editor_update_brush),
editor);
}
static void
gimp_brush_editor_set_data (GimpDataEditor *editor,
GimpData *data)
{
GimpBrushEditor *brush_editor;
gdouble radius = 0.0;
gdouble hardness = 0.0;
gdouble ratio = 0.0;
gdouble angle = 0.0;
brush_editor = GIMP_BRUSH_EDITOR (editor);
GIMP_DATA_EDITOR_CLASS (parent_class)->set_data (editor, data);
gimp_preview_set_viewable (GIMP_PREVIEW (brush_editor->preview),
(GimpViewable *) data);
if (editor->data && GIMP_IS_BRUSH_GENERATED (editor->data))
{
GimpBrushGenerated *brush;
brush = GIMP_BRUSH_GENERATED (editor->data);
radius = gimp_brush_generated_get_radius (brush);
hardness = gimp_brush_generated_get_hardness (brush);
ratio = gimp_brush_generated_get_aspect_ratio (brush);
angle = gimp_brush_generated_get_angle (brush);
gtk_widget_set_sensitive (brush_editor->options_table,
editor->data_editable);
}
else
{
gtk_widget_set_sensitive (brush_editor->options_table, FALSE);
}
gtk_adjustment_set_value (brush_editor->radius_data, radius);
gtk_adjustment_set_value (brush_editor->hardness_data, hardness);
gtk_adjustment_set_value (brush_editor->aspect_ratio_data, ratio);
gtk_adjustment_set_value (brush_editor->angle_data, angle);
}
/* public functions */
GimpDataEditor *
gimp_brush_editor_new (Gimp *gimp)
{
GimpBrushEditor *brush_editor;
brush_editor = g_object_new (GIMP_TYPE_BRUSH_EDITOR, NULL);
if (! gimp_data_editor_construct (GIMP_DATA_EDITOR (brush_editor),
gimp->brush_factory,
NULL, NULL))
{
g_object_unref (brush_editor);
return NULL;
}
return GIMP_DATA_EDITOR (brush_editor);
}
/* private functions */
static void
gimp_brush_editor_update_brush (GtkAdjustment *adjustment,
GimpBrushEditor *editor)
{
GimpBrushGenerated *brush;
gdouble radius;
gdouble hardness;
gdouble ratio;
gdouble angle;
if (! GIMP_IS_BRUSH_GENERATED (GIMP_DATA_EDITOR (editor)->data))
return;
brush = GIMP_BRUSH_GENERATED (GIMP_DATA_EDITOR (editor)->data);
radius = editor->radius_data->value;
hardness = editor->hardness_data->value;
ratio = editor->aspect_ratio_data->value;
angle = editor->angle_data->value;
if (angle != gimp_brush_generated_get_radius (brush) ||
hardness != gimp_brush_generated_get_hardness (brush) ||
ratio != gimp_brush_generated_get_aspect_ratio (brush) ||
angle != gimp_brush_generated_get_angle (brush))
{
gimp_brush_generated_freeze (brush);
gimp_brush_generated_set_radius (brush, radius);
gimp_brush_generated_set_hardness (brush, hardness);
gimp_brush_generated_set_aspect_ratio (brush, ratio);
gimp_brush_generated_set_angle (brush, angle);
gimp_brush_generated_thaw (brush);
}
}
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