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/* base class for drawing operations
*
* 27/9/10
* - from im_draw_circle()
* 17/11/10
* - oops, scanline clipping was off by 1
*/
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <glib/gi18n-lib.h>
#include <string.h>
#include <vips/vips.h>
#include <vips/internal.h>
#include "pdraw.h"
/**
* VipsCombineMode:
* @VIPS_COMBINE_MODE_SET: set pixels to the new value
* @VIPS_COMBINE_MODE_ADD: add pixels
*
* See [method@Image.draw_image] and so on.
*
* Operations like [method@Image.draw_image] need to be told how to combine images
* from two sources.
*
* ::: seealso
* [method@Image.join].
*/
G_DEFINE_ABSTRACT_TYPE(VipsDraw, vips_draw, VIPS_TYPE_OPERATION);
static int
vips_draw_build(VipsObject *object)
{
VipsObjectClass *class = VIPS_OBJECT_GET_CLASS(object);
VipsDraw *draw = VIPS_DRAW(object);
#ifdef DEBUG
printf("vips_draw_build: ");
vips_object_print_name(object);
printf("\n");
#endif /*DEBUG*/
if (VIPS_OBJECT_CLASS(vips_draw_parent_class)->build(object))
return -1;
if (vips_check_coding_known(class->nickname, draw->image) ||
vips_image_inplace(draw->image))
return -1;
draw->lsize = VIPS_IMAGE_SIZEOF_LINE(draw->image);
draw->psize = VIPS_IMAGE_SIZEOF_PEL(draw->image);
draw->noclip = FALSE;
return 0;
}
static void
vips_draw_class_init(VipsDrawClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS(class);
VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS(class);
VipsOperationClass *operation_class = VIPS_OPERATION_CLASS(class);
gobject_class->set_property = vips_object_set_property;
gobject_class->get_property = vips_object_get_property;
vobject_class->nickname = "draw";
vobject_class->description = _("draw operations");
vobject_class->build = vips_draw_build;
// no draw operation is cached
operation_class->flags |= VIPS_OPERATION_NOCACHE;
VIPS_ARG_IMAGE(class, "image", 1,
_("Image"),
_("Image to draw on"),
VIPS_ARGUMENT_REQUIRED_INPUT | VIPS_ARGUMENT_MODIFY,
G_STRUCT_OFFSET(VipsDraw, image));
}
static void
vips_draw_init(VipsDraw *draw)
{
}
void
vips_draw_operation_init(void)
{
extern GType vips_draw_rect_get_type(void);
extern GType vips_draw_image_get_type(void);
extern GType vips_draw_mask_get_type(void);
extern GType vips_draw_line_get_type(void);
extern GType vips_draw_circle_get_type(void);
extern GType vips_draw_flood_get_type(void);
extern GType vips_draw_smudge_get_type(void);
vips_draw_rect_get_type();
vips_draw_image_get_type();
vips_draw_mask_get_type();
vips_draw_line_get_type();
vips_draw_circle_get_type();
vips_draw_flood_get_type();
vips_draw_smudge_get_type();
}
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