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gimp/app/gimpbrushpreview.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* GimpBrushPreview Widget
* Copyright (C) 2001 Michael Natterer
*
* 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 "apptypes.h"
#include "gimpbrush.h"
#include "gimpbrushpipe.h"
#include "gimpbrushpreview.h"
#include "gimpdnd.h"
#include "temp_buf.h"
static void gimp_brush_preview_class_init (GimpBrushPreviewClass *klass);
static void gimp_brush_preview_init (GimpBrushPreview *preview);
static void gimp_brush_preview_destroy (GtkObject *object);
static void gimp_brush_preview_render (GimpPreview *preview);
static GtkWidget * gimp_brush_preview_create_popup (GimpPreview *preview);
static gboolean gimp_brush_preview_needs_popup (GimpPreview *preview);
static gboolean gimp_brush_preview_render_timeout_func (GimpBrushPreview *preview);
static GimpPreviewClass *parent_class = NULL;
GtkType
gimp_brush_preview_get_type (void)
{
static GtkType preview_type = 0;
if (! preview_type)
{
GtkTypeInfo preview_info =
{
"GimpBrushPreview",
sizeof (GimpBrushPreview),
sizeof (GimpBrushPreviewClass),
(GtkClassInitFunc) gimp_brush_preview_class_init,
(GtkObjectInitFunc) gimp_brush_preview_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
preview_type = gtk_type_unique (GIMP_TYPE_PREVIEW, &preview_info);
}
return preview_type;
}
static void
gimp_brush_preview_class_init (GimpBrushPreviewClass *klass)
{
GtkObjectClass *object_class;
GimpPreviewClass *preview_class;
object_class = (GtkObjectClass *) klass;
preview_class = (GimpPreviewClass *) klass;
parent_class = gtk_type_class (GIMP_TYPE_PREVIEW);
object_class->destroy = gimp_brush_preview_destroy;
preview_class->render = gimp_brush_preview_render;
preview_class->create_popup = gimp_brush_preview_create_popup;
preview_class->needs_popup = gimp_brush_preview_needs_popup;
}
static void
gimp_brush_preview_init (GimpBrushPreview *brush_preview)
{
brush_preview->pipe_timeout_id = 0;
brush_preview->pipe_animation_index = 0;
}
static void
gimp_brush_preview_destroy (GtkObject *object)
{
GimpBrushPreview *brush_preview;
brush_preview = GIMP_BRUSH_PREVIEW (object);
if (brush_preview->pipe_timeout_id)
{
g_source_remove (brush_preview->pipe_timeout_id);
brush_preview->pipe_timeout_id = 0;
brush_preview->pipe_animation_index = 0;
}
if (GTK_OBJECT_CLASS (parent_class)->destroy)
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
#define indicator_width 7
#define indicator_height 7
#define WHT { 255, 255, 255 }
#define BLK { 0, 0, 0 }
#define RED { 255, 127, 127 }
static void
gimp_brush_preview_render (GimpPreview *preview)
{
GimpBrushPreview *brush_preview;
GimpBrush *brush;
TempBuf *temp_buf;
gint width;
gint height;
gint brush_width;
gint brush_height;
guchar *buf;
guchar *b;
gint x, y;
gint offset_x;
gint offset_y;
brush_preview = GIMP_BRUSH_PREVIEW (preview);
if (brush_preview->pipe_timeout_id)
{
g_source_remove (brush_preview->pipe_timeout_id);
brush_preview->pipe_timeout_id = 0;
}
brush = GIMP_BRUSH (preview->viewable);
brush_width = brush->mask->width;
brush_height = brush->mask->height;
width = preview->width;
height = preview->height;
temp_buf = gimp_viewable_get_new_preview (preview->viewable,
width,
height);
if (preview->is_popup)
{
gimp_preview_render_and_flush (preview,
temp_buf,
-1);
temp_buf_free (temp_buf);
if (GIMP_IS_BRUSH_PIPE (brush))
{
if (width != brush_width ||
height != brush_height)
{
g_warning ("%s(): non-fullsize pipe popups are not supported yet.",
G_GNUC_FUNCTION);
return;
}
brush_preview->pipe_animation_index = 0;
brush_preview->pipe_timeout_id =
g_timeout_add (300,
(GSourceFunc) gimp_brush_preview_render_timeout_func,
brush_preview);
}
return;
}
buf = temp_buf_data (temp_buf);
if (width < brush_width || height < brush_height)
{
static const guchar scale_indicator_bits[7][7][3] =
{
{ WHT, WHT, WHT, WHT, WHT, WHT, WHT },
{ WHT, WHT, WHT, BLK, WHT, WHT, WHT },
{ WHT, WHT, WHT, BLK, WHT, WHT, WHT },
{ WHT, BLK, BLK, BLK, BLK, BLK, WHT },
{ WHT, WHT, WHT, BLK, WHT, WHT, WHT },
{ WHT, WHT, WHT, BLK, WHT, WHT, WHT },
{ WHT, WHT, WHT, WHT, WHT, WHT, WHT }
};
static const guchar scale_pipe_indicator_bits[7][7][3] =
{
{ WHT, WHT, WHT, WHT, WHT, WHT, WHT },
{ WHT, WHT, WHT, BLK, WHT, WHT, RED },
{ WHT, WHT, WHT, BLK, WHT, RED, RED },
{ WHT, BLK, BLK, BLK, BLK, BLK, RED },
{ WHT, WHT, WHT, BLK, RED, RED, RED },
{ WHT, WHT, RED, BLK, RED, RED, RED },
{ WHT, RED, RED, RED, RED, RED, RED }
};
offset_x = width - indicator_width;
offset_y = height - indicator_height;
b = buf + (offset_y * width + offset_x) * temp_buf->bytes;
for (y = 0; y < indicator_height; y++)
{
for (x = 0; x < indicator_height; x++)
{
if (GIMP_IS_BRUSH_PIPE (brush))
{
*b++ = scale_pipe_indicator_bits[y][x][0];
*b++ = scale_pipe_indicator_bits[y][x][1];
*b++ = scale_pipe_indicator_bits[y][x][2];
}
else
{
*b++ = scale_indicator_bits[y][x][0];
*b++ = scale_indicator_bits[y][x][1];
*b++ = scale_indicator_bits[y][x][2];
}
}
b += (width - indicator_width) * temp_buf->bytes;
}
}
else if (GIMP_IS_BRUSH_PIPE (brush))
{
static const guchar pipe_indicator_bits[7][7][3] =
{
{ WHT, WHT, WHT, WHT, WHT, WHT, WHT },
{ WHT, WHT, WHT, WHT, WHT, WHT, RED },
{ WHT, WHT, WHT, WHT, WHT, RED, RED },
{ WHT, WHT, WHT, WHT, RED, RED, RED },
{ WHT, WHT, WHT, RED, RED, RED, RED },
{ WHT, WHT, RED, RED, RED, RED, RED },
{ WHT, RED, RED, RED, RED, RED, RED }
};
offset_x = width - indicator_width;
offset_y = height - indicator_height;
b = buf + (offset_y * width + offset_x) * temp_buf->bytes;
for (y = 0; y < indicator_height; y++)
{
for (x = 0; x < indicator_height; x++)
{
*b++ = pipe_indicator_bits[y][x][0];
*b++ = pipe_indicator_bits[y][x][1];
*b++ = pipe_indicator_bits[y][x][2];
}
b += (width - indicator_width) * temp_buf->bytes;
}
}
#undef indicator_width
#undef indicator_height
#undef WHT
#undef BLK
#undef RED
gimp_preview_render_and_flush (preview,
temp_buf,
-1);
temp_buf_free (temp_buf);
}
static GtkWidget *
gimp_brush_preview_create_popup (GimpPreview *preview)
{
gint popup_width;
gint popup_height;
popup_width = GIMP_BRUSH (preview->viewable)->mask->width;
popup_height = GIMP_BRUSH (preview->viewable)->mask->height;
return gimp_preview_new_full (preview->viewable,
popup_width,
popup_height,
0,
TRUE, FALSE, FALSE);
}
static gboolean
gimp_brush_preview_needs_popup (GimpPreview *preview)
{
GimpBrush *brush;
gint brush_width;
gint brush_height;
brush = GIMP_BRUSH (preview->viewable);
brush_width = brush->mask->width;
brush_height = brush->mask->height;
if (GIMP_IS_BRUSH_PIPE (brush) ||
brush_width > preview->width ||
brush_height > preview->height)
return TRUE;
return FALSE;
}
static gboolean
gimp_brush_preview_render_timeout_func (GimpBrushPreview *brush_preview)
{
GimpPreview *preview;
GimpBrushPipe *brush_pipe;
GimpBrush *brush;
TempBuf *temp_buf;
gint brush_width;
gint brush_height;
preview = GIMP_PREVIEW (brush_preview);
if (! preview->viewable)
{
brush_preview->pipe_timeout_id = 0;
brush_preview->pipe_animation_index = 0;
return FALSE;
}
brush_pipe = GIMP_BRUSH_PIPE (preview->viewable);
brush_width = brush->mask->width;
brush_height = brush->mask->height;
brush_preview->pipe_animation_index++;
if (brush_preview->pipe_animation_index >= brush_pipe->nbrushes)
brush_preview->pipe_animation_index = 0;
brush = GIMP_BRUSH (brush_pipe->brushes[brush_preview->pipe_animation_index]);
temp_buf = gimp_viewable_get_new_preview (GIMP_VIEWABLE (brush),
preview->width,
preview->height);
gimp_preview_render_and_flush (preview,
temp_buf,
-1);
temp_buf_free (temp_buf);
return TRUE;
}
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