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gimp/app/brush_edit.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* brush_edit module 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 <string.h>
#include "appenv.h"
#include "gimpbrushgenerated.h"
#include "brush_edit.h"
#include "gimpui.h"
#include "libgimp/gimpmath.h"
#include "libgimp/gimpintl.h"
static void brush_edit_close_callback (GtkWidget *widget,
gpointer data);
static gint brush_edit_preview_resize (GtkWidget *widget,
GdkEvent *event,
BrushEditGeneratedWindow *begw);
static void
update_brush_callback (GtkAdjustment *adjustment,
BrushEditGeneratedWindow *begw)
{
if (begw->brush &&
((begw->radius_data->value
!= gimp_brush_generated_get_radius (begw->brush))
|| (begw->hardness_data->value
!= gimp_brush_generated_get_hardness (begw->brush))
|| (begw->aspect_ratio_data->value
!= gimp_brush_generated_get_aspect_ratio (begw->brush))
|| (begw->angle_data->value
!= gimp_brush_generated_get_angle (begw->brush))))
{
gimp_brush_generated_freeze (begw->brush);
gimp_brush_generated_set_radius (begw->brush,
begw->radius_data->value);
gimp_brush_generated_set_hardness (begw->brush,
begw->hardness_data->value);
gimp_brush_generated_set_aspect_ratio (begw->brush,
begw->aspect_ratio_data->value);
gimp_brush_generated_set_angle (begw->brush,
begw->angle_data->value);
gimp_brush_generated_thaw (begw->brush);
}
}
static void
brush_edit_clear_preview (BrushEditGeneratedWindow *begw)
{
guchar *buf;
gint i;
buf = g_new (guchar, begw->preview->requisition.width);
/* Set the buffer to white */
memset (buf, 255, begw->preview->requisition.width);
/* Set the image buffer to white */
for (i = 0; i < begw->preview->requisition.height; i++)
gtk_preview_draw_row (GTK_PREVIEW (begw->preview), buf, 0, i,
begw->preview->requisition.width);
g_free (buf);
}
static gint
brush_edit_brush_dirty_callback (GimpBrush *brush,
BrushEditGeneratedWindow *begw)
{
gint x, y, width, yend, ystart, xo;
gint scale;
gchar *src, *buf;
brush_edit_clear_preview (begw);
if (brush == NULL || brush->mask == NULL)
return TRUE;
scale = MAX (ceil (brush->mask->width/
(float) begw->preview->requisition.width),
ceil (brush->mask->height/
(float) begw->preview->requisition.height));
ystart = 0;
xo = begw->preview->requisition.width/2 - brush->mask->width/(2*scale);
ystart = begw->preview->requisition.height/2 - brush->mask->height/(2*scale);
yend = ystart + brush->mask->height/(scale);
width = CLAMP (brush->mask->width/scale, 0, begw->preview->requisition.width);
buf = g_new (gchar, width);
src = (gchar *) temp_buf_data (brush->mask);
for (y = ystart; y < yend; y++)
{
/* Invert the mask for display.
*/
for (x = 0; x < width; x++)
buf[x] = 255 - src[x*scale];
gtk_preview_draw_row (GTK_PREVIEW (begw->preview), (guchar *)buf, xo, y,
width);
src += brush->mask->width*scale;
}
g_free (buf);
if (begw->scale != scale)
{
gchar str[255];
begw->scale = scale;
g_snprintf (str, sizeof (str), "%d:1", scale);
gtk_label_set_text (GTK_LABEL (begw->scale_label), str);
gtk_widget_draw (begw->scale_label, NULL);
}
gtk_widget_draw (begw->preview, NULL);
return TRUE;
}
static void
brush_renamed_callback (GtkWidget *widget,
BrushEditGeneratedWindow *begw)
{
gtk_entry_set_text (GTK_ENTRY (begw->name),
gimp_brush_get_name (GIMP_BRUSH (begw->brush)));
}
void
brush_edit_generated_set_brush (BrushEditGeneratedWindow *begw,
GimpBrush *gbrush)
{
GimpBrushGenerated *brush = NULL;
g_return_if_fail (begw != NULL);
if (begw->brush == (GimpBrushGenerated *) gbrush)
return;
if (begw->brush)
{
gtk_signal_disconnect_by_data (GTK_OBJECT (begw->brush), begw);
gtk_object_unref (GTK_OBJECT (begw->brush));
begw->brush = NULL;
}
if (!gbrush || !GIMP_IS_BRUSH_GENERATED (gbrush))
{
begw->brush = NULL;
if (GTK_WIDGET_VISIBLE (begw->shell))
gtk_widget_hide (begw->shell);
return;
}
brush = GIMP_BRUSH_GENERATED (gbrush);
gtk_signal_connect (GTK_OBJECT (brush), "dirty",
GTK_SIGNAL_FUNC (brush_edit_brush_dirty_callback),
begw);
gtk_signal_connect (GTK_OBJECT (brush), "rename",
GTK_SIGNAL_FUNC (brush_renamed_callback),
begw);
begw->brush = NULL;
gtk_adjustment_set_value (GTK_ADJUSTMENT (begw->radius_data),
gimp_brush_generated_get_radius (brush));
gtk_adjustment_set_value (GTK_ADJUSTMENT (begw->hardness_data),
gimp_brush_generated_get_hardness (brush));
gtk_adjustment_set_value (GTK_ADJUSTMENT (begw->angle_data),
gimp_brush_generated_get_angle (brush));
gtk_adjustment_set_value (GTK_ADJUSTMENT (begw->aspect_ratio_data),
gimp_brush_generated_get_aspect_ratio (brush));
gtk_entry_set_text (GTK_ENTRY (begw->name), gimp_brush_get_name (gbrush));
begw->brush = brush;
gtk_object_ref (GTK_OBJECT (begw->brush));
brush_edit_brush_dirty_callback (GIMP_BRUSH (brush), begw);
}
void
name_changed_func (GtkWidget *widget,
BrushEditGeneratedWindow *begw)
{
gchar *entry_text;
entry_text = gtk_entry_get_text (GTK_ENTRY (widget));
gimp_brush_set_name (GIMP_BRUSH (begw->brush), entry_text);
}
void
focus_out_func (GtkWidget *wid1,
GtkWidget *wid2,
BrushEditGeneratedWindow *begw)
{
name_changed_func (wid1, begw);
}
BrushEditGeneratedWindow *
brush_edit_generated_new (void)
{
BrushEditGeneratedWindow *begw;
GtkWidget *vbox;
GtkWidget *slider;
GtkWidget *table;
begw = g_new0 (BrushEditGeneratedWindow, 1);
begw->shell = gimp_dialog_new (_("Brush Editor"), "generated_brush_editor",
gimp_standard_help_func,
"dialogs/brush_editor.html",
GTK_WIN_POS_NONE,
FALSE, TRUE, FALSE,
_("Close"), brush_edit_close_callback,
begw, NULL, NULL, TRUE, TRUE,
NULL);
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (begw->shell)->vbox), vbox);
/* Brush's name */
begw->name = gtk_entry_new ();
gtk_box_pack_start (GTK_BOX (vbox), begw->name, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (begw->name), "activate",
GTK_SIGNAL_FUNC (name_changed_func),
begw);
gtk_signal_connect (GTK_OBJECT (begw->name), "focus_out_event",
GTK_SIGNAL_FUNC (focus_out_func),
begw);
gtk_widget_show (begw->name);
/* brush's preview widget w/frame */
begw->frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (begw->frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (vbox), begw->frame, TRUE, TRUE, 0);
begw->preview = gtk_preview_new (GTK_PREVIEW_GRAYSCALE);
gtk_preview_size (GTK_PREVIEW (begw->preview), 125, 100);
gtk_signal_connect_after (GTK_OBJECT (begw->frame), "size_allocate",
GTK_SIGNAL_FUNC (brush_edit_preview_resize),
begw);
gtk_container_add (GTK_CONTAINER (begw->frame), begw->preview);
gtk_widget_show (begw->preview);
gtk_widget_show (begw->frame);
/* table for sliders/labels */
begw->scale_label = gtk_label_new ("-1:1");
gtk_box_pack_start (GTK_BOX (vbox), begw->scale_label, FALSE, FALSE, 0);
gtk_widget_show (begw->scale_label);
begw->scale = -1;
/* table for sliders/labels */
table = gtk_table_new (4, 2, FALSE);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
/* brush radius scale */
begw->radius_data =
GTK_ADJUSTMENT (gtk_adjustment_new (10.0, 0.0, 100.0, 0.1, 1.0, 0.0));
slider = gtk_hscale_new (begw->radius_data);
gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
gtk_signal_connect (GTK_OBJECT (begw->radius_data), "value_changed",
GTK_SIGNAL_FUNC (update_brush_callback),
begw);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
_("Radius:"), 1.0, 1.0,
slider, 1, FALSE);
/* brush hardness scale */
begw->hardness_data =
GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 1.0, 0.01, 0.01, 0.0));
slider = gtk_hscale_new (begw->hardness_data);
gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
gtk_signal_connect (GTK_OBJECT (begw->hardness_data), "value_changed",
GTK_SIGNAL_FUNC (update_brush_callback),
begw);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
_("Hardness:"), 1.0, 1.0,
slider, 1, FALSE);
/* brush aspect ratio scale */
begw->aspect_ratio_data =
GTK_ADJUSTMENT (gtk_adjustment_new (1.0, 1.0, 20.0, 0.1, 1.0, 0.0));
slider = gtk_hscale_new (begw->aspect_ratio_data);
gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
gtk_signal_connect (GTK_OBJECT (begw->aspect_ratio_data), "value_changed",
GTK_SIGNAL_FUNC (update_brush_callback),
begw);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 3,
_("Aspect Ratio:"), 1.0, 1.0,
slider, 1, FALSE);
/* brush angle scale */
begw->angle_data =
GTK_ADJUSTMENT (gtk_adjustment_new (00.0, 0.0, 180.0, 0.1, 1.0, 0.0));
slider = gtk_hscale_new (begw->angle_data);
gtk_scale_set_value_pos (GTK_SCALE (slider), GTK_POS_TOP);
gtk_range_set_update_policy (GTK_RANGE (slider), GTK_UPDATE_DELAYED);
gtk_signal_connect (GTK_OBJECT (begw->angle_data), "value_changed",
GTK_SIGNAL_FUNC (update_brush_callback),
begw);
gimp_table_attach_aligned (GTK_TABLE (table), 0, 2,
_("Angle:"), 1.0, 1.0,
slider, 1, FALSE);
gtk_table_set_row_spacings (GTK_TABLE (table), 3);
gtk_table_set_col_spacing (GTK_TABLE (table), 0, 4);
gtk_widget_show (table);
gtk_widget_show (vbox);
gtk_widget_show (begw->shell);
return begw;
}
static gint
brush_edit_preview_resize (GtkWidget *widget,
GdkEvent *event,
BrushEditGeneratedWindow *begw)
{
gtk_preview_size (GTK_PREVIEW (begw->preview),
widget->allocation.width - 4,
widget->allocation.height - 4);
/* update the display */
if (begw->brush)
brush_edit_brush_dirty_callback (GIMP_BRUSH (begw->brush), begw);
return FALSE;
}
static void
brush_edit_close_callback (GtkWidget *widget,
gpointer data)
{
BrushEditGeneratedWindow *begw = (BrushEditGeneratedWindow *) data;
if (GTK_WIDGET_VISIBLE (begw->shell))
gtk_widget_hide (begw->shell);
}
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