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#define __NR_ARENA_IMAGE_C__
/*
* RGBA display list system for inkscape
*
* Author:
* Lauris Kaplinski <lauris@kaplinski.com>
*
* Copyright (C) 2001-2002 Lauris Kaplinski
* Copyright (C) 2001 Ximian, Inc.
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include <libnr/nr-compose-transform.h>
#include "../prefs-utils.h"
#include "nr-arena-image.h"
int nr_arena_image_x_sample = 1;
int nr_arena_image_y_sample = 1;
/*
* NRArenaCanvasImage
*
*/
static void nr_arena_image_class_init (NRArenaImageClass *klass);
static void nr_arena_image_init (NRArenaImage *image);
static void nr_arena_image_finalize (NRObject *object);
static unsigned int nr_arena_image_update (NRArenaItem *item, NRRectL *area, NRGC *gc, unsigned int state, unsigned int reset);
static unsigned int nr_arena_image_render (NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags);
static NRArenaItem *nr_arena_image_pick (NRArenaItem *item, NR::Point p, double delta, unsigned int sticky);
static NRArenaItemClass *parent_class;
NRType
nr_arena_image_get_type (void)
{
static NRType type = 0;
if (!type) {
type = nr_object_register_type (NR_TYPE_ARENA_ITEM,
"NRArenaImage",
sizeof (NRArenaImageClass),
sizeof (NRArenaImage),
(void (*) (NRObjectClass *)) nr_arena_image_class_init,
(void (*) (NRObject *)) nr_arena_image_init);
}
return type;
}
static void
nr_arena_image_class_init (NRArenaImageClass *klass)
{
NRObjectClass *object_class;
NRArenaItemClass *item_class;
object_class = (NRObjectClass *) klass;
item_class = (NRArenaItemClass *) klass;
parent_class = (NRArenaItemClass *) ((NRObjectClass *) klass)->parent;
object_class->finalize = nr_arena_image_finalize;
object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaImage>;
item_class->update = nr_arena_image_update;
item_class->render = nr_arena_image_render;
item_class->pick = nr_arena_image_pick;
}
static void
nr_arena_image_init (NRArenaImage *image)
{
image->px = NULL;
image->pxw = image->pxh = image->pxrs = 0;
image->x = image->y = 0.0;
image->width = 256.0;
image->height = 256.0;
nr_matrix_set_identity (&image->grid2px);
}
static void
nr_arena_image_finalize (NRObject *object)
{
NRArenaImage *image = NR_ARENA_IMAGE (object);
image->px = NULL;
((NRObjectClass *) parent_class)->finalize (object);
}
static unsigned int
nr_arena_image_update (NRArenaItem *item, NRRectL *area, NRGC *gc, unsigned int state, unsigned int reset)
{
NRMatrix grid2px;
NRArenaImage *image = NR_ARENA_IMAGE (item);
/* Request render old */
nr_arena_item_request_render (item);
/* Copy affine */
nr_matrix_invert (&grid2px, &gc->transform);
double hscale, vscale; // todo: replace with NR::scale
if (image->px) {
hscale = image->pxw / image->width;
vscale = image->pxh / image->height;
} else {
hscale = 1.0;
vscale = 1.0;
}
image->grid2px[0] = grid2px.c[0] * hscale;
image->grid2px[2] = grid2px.c[2] * hscale;
image->grid2px[4] = grid2px.c[4] * hscale;
image->grid2px[1] = grid2px.c[1] * vscale;
image->grid2px[3] = grid2px.c[3] * vscale;
image->grid2px[5] = grid2px.c[5] * vscale;
image->grid2px[4] -= image->x * hscale;
image->grid2px[5] -= image->y * vscale;
/* Calculate bbox */
if (image->px) {
NRRect bbox;
bbox.x0 = image->x;
bbox.y0 = image->y;
bbox.x1 = image->x + image->width;
bbox.y1 = image->y + image->height;
nr_rect_d_matrix_transform (&bbox, &bbox, &gc->transform);
item->bbox.x0 = (int) floor (bbox.x0);
item->bbox.y0 = (int) floor (bbox.y0);
item->bbox.x1 = (int) ceil (bbox.x1);
item->bbox.y1 = (int) ceil (bbox.y1);
} else {
item->bbox.x0 = (int) gc->transform[4];
item->bbox.y0 = (int) gc->transform[5];
item->bbox.x1 = item->bbox.x0 - 1;
item->bbox.y1 = item->bbox.y0 - 1;
}
nr_arena_item_request_render (item);
return NR_ARENA_ITEM_STATE_ALL;
}
#define FBITS 12
#define b2i (image->grid2px)
static unsigned int
nr_arena_image_render (NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags)
{
nr_arena_image_x_sample = prefs_get_int_attribute ("options.bitmapoversample", "value", 1);
nr_arena_image_y_sample = nr_arena_image_x_sample;
NRArenaImage *image = NR_ARENA_IMAGE (item);
if (!image->px) return item->state;
guint32 Falpha = item->opacity;
if (Falpha < 1) return item->state;
unsigned char * dpx = NR_PIXBLOCK_PX (pb);
const int drs = pb->rs;
const int dw = pb->area.x1 - pb->area.x0;
const int dh = pb->area.y1 - pb->area.y0;
unsigned char * spx = image->px;
const int srs = image->pxrs;
const int sw = image->pxw;
const int sh = image->pxh;
NR::Matrix d2s;
d2s[0] = b2i[0];
d2s[1] = b2i[1];
d2s[2] = b2i[2];
d2s[3] = b2i[3];
d2s[4] = b2i[0] * pb->area.x0 + b2i[2] * pb->area.y0 + b2i[4];
d2s[5] = b2i[1] * pb->area.x0 + b2i[3] * pb->area.y0 + b2i[5];
if (pb->mode == NR_PIXBLOCK_MODE_R8G8B8) {
/* fixme: This is not implemented yet (Lauris) */
/* nr_R8G8B8_R8G8B8_R8G8B8A8_N_TRANSFORM (dpx, dw, dh, drs, spx, sw, sh, srs, d2s, Falpha, nr_arena_image_x_sample, nr_arena_image_y_sample); */
} else if (pb->mode == NR_PIXBLOCK_MODE_R8G8B8A8P) {
nr_R8G8B8A8_P_R8G8B8A8_P_R8G8B8A8_N_TRANSFORM (dpx, dw, dh, drs, spx, sw, sh, srs, d2s, Falpha, nr_arena_image_x_sample, nr_arena_image_y_sample);
} else if (pb->mode == NR_PIXBLOCK_MODE_R8G8B8A8N) {
//FIXME: The _N_N_N_ version gives a gray border around images, see bug 906376
// This mode is only used when exporting, screen rendering always has _P_P_P_, so I decided to simply replace it for now
// Feel free to propose a better fix
//nr_R8G8B8A8_N_R8G8B8A8_N_R8G8B8A8_N_TRANSFORM (dpx, dw, dh, drs, spx, sw, sh, srs, d2s, Falpha, nr_arena_image_x_sample, nr_arena_image_y_sample);
nr_R8G8B8A8_P_R8G8B8A8_P_R8G8B8A8_N_TRANSFORM (dpx, dw, dh, drs, spx, sw, sh, srs, d2s, Falpha, nr_arena_image_x_sample, nr_arena_image_y_sample);
}
pb->empty = FALSE;
return item->state;
}
static NRArenaItem *
nr_arena_image_pick (NRArenaItem *item, NR::Point p, double delta, unsigned int sticky)
{
NRArenaImage *image = NR_ARENA_IMAGE (item);
if (!image->px) return NULL;
unsigned char * const pixels = image->px;
const int width = image->pxw;
const int height = image->pxh;
const int rowstride = image->pxrs;
NR::Point tp = p * image->grid2px;
const int ix = (int)(tp[NR::X]);
const int iy = (int)(tp[NR::Y]);
if ((ix < 0) || (iy < 0) || (ix >= width) || (iy >= height))
return NULL;
unsigned char *pix_ptr = pixels + iy * rowstride + ix * 4;
// is the alpha not transparent?
return (pix_ptr[3] > 0) ? item : NULL;
}
/* Utility */
void
nr_arena_image_set_pixels (NRArenaImage *image, const unsigned char *px, unsigned int pxw, unsigned int pxh, unsigned int pxrs)
{
nr_return_if_fail (image != NULL);
nr_return_if_fail (NR_IS_ARENA_IMAGE (image));
image->px = (unsigned char *) px;
image->pxw = pxw;
image->pxh = pxh;
image->pxrs = pxrs;
nr_arena_item_request_update (NR_ARENA_ITEM (image), NR_ARENA_ITEM_STATE_ALL, FALSE);
}
void
nr_arena_image_set_geometry (NRArenaImage *image, double x, double y, double width, double height)
{
nr_return_if_fail (image != NULL);
nr_return_if_fail (NR_IS_ARENA_IMAGE (image));
image->x = x;
image->y = y;
image->width = width;
image->height = height;
nr_arena_item_request_update (NR_ARENA_ITEM (image), NR_ARENA_ITEM_STATE_ALL, FALSE);
}
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