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gimp/app/widgets/gimppreviewrendererbrush.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimppreviewrendererbrush.c
* Copyright (C) 2003 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 "widgets-types.h"
#include "base/temp-buf.h"
#include "core/gimpbrush.h"
#include "core/gimpbrushpipe.h"
#include "gimppreviewrendererbrush.h"
static void gimp_preview_renderer_brush_class_init (GimpPreviewRendererBrushClass *klass);
static void gimp_preview_renderer_brush_init (GimpPreviewRendererBrush *renderer);
static void gimp_preview_renderer_brush_finalize (GObject *object);
static void gimp_preview_renderer_brush_render (GimpPreviewRenderer *renderer,
GtkWidget *widget);
static gboolean gimp_preview_renderer_brush_render_timeout (gpointer data);
static GimpPreviewRendererClass *parent_class = NULL;
GType
gimp_preview_renderer_brush_get_type (void)
{
static GType renderer_type = 0;
if (! renderer_type)
{
static const GTypeInfo renderer_info =
{
sizeof (GimpPreviewRendererBrushClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gimp_preview_renderer_brush_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpPreviewRendererBrush),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_preview_renderer_brush_init,
};
renderer_type = g_type_register_static (GIMP_TYPE_PREVIEW_RENDERER,
"GimpPreviewRendererBrush",
&renderer_info, 0);
}
return renderer_type;
}
static void
gimp_preview_renderer_brush_class_init (GimpPreviewRendererBrushClass *klass)
{
GObjectClass *object_class;
GimpPreviewRendererClass *renderer_class;
object_class = G_OBJECT_CLASS (klass);
renderer_class = GIMP_PREVIEW_RENDERER_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gimp_preview_renderer_brush_finalize;
renderer_class->render = gimp_preview_renderer_brush_render;
}
static void
gimp_preview_renderer_brush_init (GimpPreviewRendererBrush *renderer)
{
renderer->pipe_timeout_id = 0;
renderer->pipe_animation_index = 0;
}
static void
gimp_preview_renderer_brush_finalize (GObject *object)
{
GimpPreviewRendererBrush *renderer;
renderer = GIMP_PREVIEW_RENDERER_BRUSH (object);
if (renderer->pipe_timeout_id)
{
g_source_remove (renderer->pipe_timeout_id);
renderer->pipe_timeout_id = 0;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_preview_renderer_brush_render (GimpPreviewRenderer *renderer,
GtkWidget *widget)
{
GimpPreviewRendererBrush *renderbrush;
GimpBrush *brush;
TempBuf *temp_buf;
gint brush_width;
gint brush_height;
renderbrush = GIMP_PREVIEW_RENDERER_BRUSH (renderer);
if (renderbrush->pipe_timeout_id)
{
g_source_remove (renderbrush->pipe_timeout_id);
renderbrush->pipe_timeout_id = 0;
}
brush = GIMP_BRUSH (renderer->viewable);
brush_width = brush->mask->width;
brush_height = brush->mask->height;
temp_buf = gimp_viewable_get_new_preview (renderer->viewable,
renderer->width,
renderer->height);
if (temp_buf->width < renderer->width)
temp_buf->x = (renderer->width - temp_buf->width) / 2;
if (temp_buf->height < renderer->height)
temp_buf->y = (renderer->height - temp_buf->height) / 2;
if (renderer->is_popup)
{
gimp_preview_renderer_render_buffer (renderer, temp_buf, -1,
GIMP_PREVIEW_BG_WHITE,
GIMP_PREVIEW_BG_WHITE);
temp_buf_free (temp_buf);
if (GIMP_IS_BRUSH_PIPE (brush))
{
#if 0
if (renderer->width != brush_width ||
renderer->height != brush_height)
{
g_warning ("%s(): non-fullsize pipe popups are not supported yet.",
G_GNUC_FUNCTION);
return;
}
#endif
renderbrush->pipe_animation_index = 0;
renderbrush->pipe_timeout_id =
g_timeout_add (300, gimp_preview_renderer_brush_render_timeout,
renderbrush);
}
return;
}
gimp_preview_renderer_render_buffer (renderer, temp_buf, -1,
GIMP_PREVIEW_BG_WHITE,
GIMP_PREVIEW_BG_WHITE);
temp_buf_free (temp_buf);
#define INDICATOR_WIDTH 7
#define INDICATOR_HEIGHT 7
if (renderer->width >= INDICATOR_WIDTH * 2 &&
renderer->height >= INDICATOR_HEIGHT * 2&&
(renderer->width < brush_width ||
renderer->height < brush_height ||
GIMP_IS_BRUSH_PIPE (brush)))
{
#define WHT { 255, 255, 255 }
#define BLK { 0, 0, 0 }
#define RED { 255, 127, 127 }
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 }
};
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 }
};
#undef WHT
#undef BLK
#undef RED
guchar *buf;
guchar *b;
gint x, y;
gint offset_x;
gint offset_y;
gboolean alpha;
gboolean pipe;
gboolean scale;
offset_x = renderer->width - INDICATOR_WIDTH;
offset_y = renderer->height - INDICATOR_HEIGHT;
buf = renderer->buffer + (offset_y * renderer->rowstride +
offset_x * renderer->bytes);
pipe = GIMP_IS_BRUSH_PIPE (brush);
scale = (renderer->width < brush_width ||
renderer->height < brush_height);
alpha = (renderer->bytes == 4);
for (y = 0; y < INDICATOR_HEIGHT; y++)
{
b = buf;
for (x = 0; x < INDICATOR_WIDTH; x++)
{
if (scale)
{
if (pipe)
{
*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];
}
}
else if (pipe)
{
*b++ = pipe_indicator_bits[y][x][0];
*b++ = pipe_indicator_bits[y][x][1];
*b++ = pipe_indicator_bits[y][x][2];
}
if (alpha)
*b++ = 255;
}
buf += renderer->rowstride;
}
}
#undef INDICATOR_WIDTH
#undef INDICATOR_HEIGHT
}
static gboolean
gimp_preview_renderer_brush_render_timeout (gpointer data)
{
GimpPreviewRendererBrush *renderbrush;
GimpPreviewRenderer *renderer;
GimpBrushPipe *brush_pipe;
GimpBrush *brush;
TempBuf *temp_buf;
renderbrush = GIMP_PREVIEW_RENDERER_BRUSH (data);
renderer = GIMP_PREVIEW_RENDERER (data);
if (! renderer->viewable)
{
renderbrush->pipe_timeout_id = 0;
renderbrush->pipe_animation_index = 0;
return FALSE;
}
brush_pipe = GIMP_BRUSH_PIPE (renderer->viewable);
renderbrush->pipe_animation_index++;
if (renderbrush->pipe_animation_index >= brush_pipe->nbrushes)
renderbrush->pipe_animation_index = 0;
brush =
GIMP_BRUSH (brush_pipe->brushes[renderbrush->pipe_animation_index]);
temp_buf = gimp_viewable_get_new_preview (GIMP_VIEWABLE (brush),
renderer->width,
renderer->height);
gimp_preview_renderer_render_buffer (renderer, temp_buf, -1,
GIMP_PREVIEW_BG_WHITE,
GIMP_PREVIEW_BG_WHITE);
temp_buf_free (temp_buf);
gimp_preview_renderer_update (renderer);
return TRUE;
}
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