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index 770d9d0a97e7f1acfdf99af3bf3696f9468d1fde..3b19ff69ba6f996ac0a91e2b34183f876be8c50b 100644 (file)
* Author:
* Niko Kiirala <niko@kiirala.com>
*
- * Copyright (C) 2006,2007 Niko Kiirala
+ * Copyright (C) 2006-2008 Niko Kiirala
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include <glib.h>
#include <cmath>
+#include <cstring>
+#include <string>
#include "display/nr-filter.h"
#include "display/nr-filter-primitive.h"
#include "display/nr-filter-tile.h"
#include "display/nr-filter-turbulence.h"
+#include "display/nr-arena.h"
#include "display/nr-arena-item.h"
#include "libnr/nr-pixblock.h"
#include "libnr/nr-blit.h"
-#include "libnr/nr-matrix.h"
-#include "libnr/nr-scale.h"
+#include <2geom/matrix.h>
+#include <2geom/rect.h>
#include "svg/svg-length.h"
#include "sp-filter-units.h"
-#if defined (SOLARIS_2_8)
+#include "preferences.h"
+
+#if defined (SOLARIS) && (SOLARIS == 8)
#include "round.h"
using Inkscape::round;
-#endif
+#endif
+
+namespace Inkscape {
+namespace Filters {
-namespace NR {
+using Geom::X;
+using Geom::Y;
+
+static Geom::OptRect get_item_bbox(NRArenaItem const *item) {
+ Geom::Rect item_bbox;
+ if (item->item_bbox) {
+ item_bbox = *(item->item_bbox);
+ } else {
+ // Bounding box might not exist, so create a dummy one.
+ Geom::Point zero(0, 0);
+ item_bbox = Geom::Rect(zero, zero);
+ }
+ if (item_bbox.min()[X] > item_bbox.max()[X]
+ || item_bbox.min()[Y] > item_bbox.max()[Y])
+ {
+ // In case of negative-size bbox, return an empty OptRect
+ return Geom::OptRect();
+ }
+ return Geom::OptRect(item_bbox);
+}
Filter::Filter()
{
Filter::Filter(int n)
{
_primitive_count = 0;
- _primitive_table_size = n;
- _primitive = new FilterPrimitive*[n];
- for ( int i = 0 ; i < n ; i++ ) {
+ _primitive_table_size = (n > 0) ? n : 1; // we guarantee there is at least 1(one) filter slot
+ _primitive = new FilterPrimitive*[_primitive_table_size];
+ for ( int i = 0 ; i < _primitive_table_size ; i++ ) {
_primitive[i] = NULL;
}
_common_init();
{
if (!_primitive[0]) {
// TODO: Should clear the input buffer instead of just returning
- return 1;
+ return 1;
}
- Matrix trans = *item->ctm;
+ FilterQuality const filterquality = (FilterQuality)item->arena->filterquality;
+ int const blurquality = item->arena->blurquality;
+
+ Geom::Matrix trans = item->ctm;
FilterSlot slot(_slot_count, item);
+ slot.set_quality(filterquality);
+ slot.set_blurquality(blurquality);
- Rect item_bbox;
- try {
- item_bbox = *item->item_bbox;
- } catch (NR::IsNothing) {
- // Bounding box might not exist, so create a dummy one.
- Point zero(0, 0);
- item_bbox = Rect(zero, zero);
- }
- if (item_bbox.min()[X] > item_bbox.max()[X]
- || item_bbox.min()[Y] > item_bbox.max()[Y])
+ Geom::Rect item_bbox;
{
- // Code below assumes non-negative size.
- return 1;
+ Geom::OptRect maybe_bbox = get_item_bbox(item);
+ if (maybe_bbox.isEmpty()) {
+ // Code below needs a bounding box
+ return 1;
+ }
+ item_bbox = *maybe_bbox;
}
- Rect filter_area = filter_effect_area(item_bbox);
- if (item_bbox.isEmpty()) {
+ Geom::Rect filter_area = filter_effect_area(item_bbox);
+ if (item_bbox.hasZeroArea()) {
// It's no use to try and filter an empty object.
return 1;
}
-
+
FilterUnits units(_filter_units, _primitive_units);
units.set_ctm(trans);
units.set_item_bbox(item_bbox);
units.set_filter_area(filter_area);
// TODO: with filterRes of 0x0 should return an empty image
+ std::pair<double,double> resolution
+ = _filter_resolution(filter_area, trans, filterquality);
+ if(!(resolution.first > 0 && resolution.second > 0))
+ return 1;
+ units.set_resolution(resolution.first, resolution.second);
if (_x_pixels > 0) {
- double y_len;
- if (_y_pixels > 0) {
- y_len = _y_pixels;
- } else {
- y_len = (_x_pixels * (filter_area.max()[Y] - filter_area.min()[Y]))
- / (filter_area.max()[X] - filter_area.min()[X]);
- }
units.set_automatic_resolution(false);
- units.set_resolution(_x_pixels, y_len);
- } else {
- Point origo = filter_area.min();
- origo *= trans;
- Point max_i(filter_area.max()[X], filter_area.min()[Y]);
- max_i *= trans;
- Point max_j(filter_area.min()[X], filter_area.max()[Y]);
- max_j *= trans;
- double i_len = sqrt((origo[X] - max_i[X]) * (origo[X] - max_i[X])
- + (origo[Y] - max_i[Y]) * (origo[Y] - max_i[Y]));
- double j_len = sqrt((origo[X] - max_j[X]) * (origo[X] - max_j[X])
- + (origo[Y] - max_j[Y]) * (origo[Y] - max_j[Y]));
+ }
+ else {
units.set_automatic_resolution(true);
- units.set_resolution(i_len, j_len);
}
units.set_paraller(false);
NRPixBlock *in = new NRPixBlock;
nr_pixblock_setup_fast(in, pb->mode, pb->area.x0, pb->area.y0,
- pb->area.x1, pb->area.y1, false);
+ pb->area.x1, pb->area.y1, true);
if (in->size != NR_PIXBLOCK_SIZE_TINY && in->data.px == NULL) {
- g_warning("NR::Filter::render: failed to reserve temporary buffer");
+ g_warning("Inkscape::Filters::Filter::render: failed to reserve temporary buffer");
return 0;
}
nr_blit_pixblock_pixblock(in, pb);
in = slot.get(NR_FILTER_SOURCEGRAPHIC);
if (in->area.x1 - in->area.x0 <= 0 || in->area.y1 - in->area.y0 <= 0) {
if (in->area.x1 - in->area.x0 < 0 || in->area.y1 - in->area.y0 < 0) {
- g_warning("NR::Filter::render: negative area! (%d, %d) (%d, %d)",
+ g_warning("Inkscape::Filters::Filter::render: negative area! (%d, %d) (%d, %d)",
in->area.x0, in->area.y0, in->area.x1, in->area.y1);
}
return 0;
}
in = NULL; // in is now handled by FilterSlot, we should not touch it
- // TODO: filters may need both filterUnits and primitiveUnits,
- // so we should pass FilterUnits to render method, not just one Matrix
- Matrix primitiveunits2pixblock = units.get_matrix_primitiveunits2pb();
for (int i = 0 ; i < _primitive_count ; i++) {
- _primitive[i]->render(slot, primitiveunits2pixblock);
+ _primitive[i]->render(slot, units);
}
slot.get_final(_output_slot, pb);
return 0;
}
-void Filter::area_enlarge(NRRectL &bbox, Matrix const &m) {
+void Filter::set_filter_units(SPFilterUnits unit) {
+ _filter_units = unit;
+}
+
+void Filter::set_primitive_units(SPFilterUnits unit) {
+ _primitive_units = unit;
+}
+
+void Filter::area_enlarge(NRRectL &bbox, NRArenaItem const *item) const {
for (int i = 0 ; i < _primitive_count ; i++) {
- if (_primitive[i]) _primitive[i]->area_enlarge(bbox, m);
+ if (_primitive[i]) _primitive[i]->area_enlarge(bbox, item->ctm);
}
+/*
+ TODO: something. See images at the bottom of filters.svg with medium-low
+ filtering quality.
+
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ FilterQuality const filterquality = (FilterQuality)prefs->getInt("/options/filterquality/value");
+
+ if (_x_pixels <= 0 && (filterquality == FILTER_QUALITY_BEST ||
+ filterquality == FILTER_QUALITY_BETTER)) {
+ return;
+ }
+
+ Geom::Rect item_bbox;
+ Geom::OptRect maybe_bbox = get_item_bbox(item);
+ if (maybe_bbox.isEmpty()) {
+ // Code below needs a bounding box
+ return;
+ }
+ item_bbox = *maybe_bbox;
+
+ std::pair<double,double> res_low
+ = _filter_resolution(item_bbox, item->ctm, filterquality);
+ //std::pair<double,double> res_full
+ // = _filter_resolution(item_bbox, item->ctm, FILTER_QUALITY_BEST);
+ double pixels_per_block = fmax(item_bbox.width() / res_low.first,
+ item_bbox.height() / res_low.second);
+ bbox.x0 -= (int)pixels_per_block;
+ bbox.x1 += (int)pixels_per_block;
+ bbox.y0 -= (int)pixels_per_block;
+ bbox.y1 += (int)pixels_per_block;
+*/
}
void Filter::bbox_enlarge(NRRectL &bbox) {
/* TODO: this is wrong. Should use bounding box in user coordinates
* and find its extents in display coordinates. */
- Point min(bbox.x0, bbox.y0);
- Point max(bbox.x1, bbox.y1);
- Rect tmp_bbox(min, max);
+ Geom::Point min(bbox.x0, bbox.y0);
+ Geom::Point max(bbox.x1, bbox.y1);
+ Geom::Rect tmp_bbox(min, max);
- Rect enlarged = filter_effect_area(tmp_bbox);
+ Geom::Rect enlarged = filter_effect_area(tmp_bbox);
- bbox.x0 = (ICoord)enlarged.min()[X];
- bbox.y0 = (ICoord)enlarged.min()[Y];
- bbox.x1 = (ICoord)enlarged.max()[X];
- bbox.y1 = (ICoord)enlarged.max()[Y];
+ bbox.x0 = (NR::ICoord)enlarged.min()[X];
+ bbox.y0 = (NR::ICoord)enlarged.min()[Y];
+ bbox.x1 = (NR::ICoord)enlarged.max()[X];
+ bbox.y1 = (NR::ICoord)enlarged.max()[Y];
}
-Rect Filter::filter_effect_area(Rect const &bbox)
+Geom::Rect Filter::filter_effect_area(Geom::Rect const &bbox)
{
- Point minp, maxp;
+ Geom::Point minp, maxp;
double len_x = bbox.max()[X] - bbox.min()[X];
double len_y = bbox.max()[Y] - bbox.min()[Y];
/* TODO: fetch somehow the object ex and em lengths */
minp[Y] = _region_y.computed;
maxp[Y] = minp[Y] + _region_height.computed;
} else {
- g_warning("Error in NR::Filter::bbox_enlarge: unrecognized value of _filter_units");
+ g_warning("Error in Inkscape::Filters::Filter::bbox_enlarge: unrecognized value of _filter_units");
}
- Rect area(minp, maxp);
+ Geom::Rect area(minp, maxp);
return area;
}
/* Constructor table holds pointers to static methods returning filter
* primitives. This table is indexed with FilterPrimitiveType, so that
* for example method in _constructor[NR_FILTER_GAUSSIANBLUR]
- * returns a filter object of type NR::FilterGaussian.
+ * returns a filter object of type Inkscape::Filters::FilterGaussian.
*/
typedef FilterPrimitive*(*FilterConstructor)();
static FilterConstructor _constructor[NR_FILTER_ENDPRIMITIVETYPE];
for (int i = _primitive_count ; i < _primitive_table_size ; i++) {
new_tbl[i] = NULL;
}
- delete[] _primitive;
+ if(_primitive != NULL) {
+ delete[] _primitive;
+ } else {
+ g_warning("oh oh");
+ }
_primitive = new_tbl;
}
}
void Filter::set_x(SVGLength const &length)
-{
+{
if (length._set)
_region_x = length;
}
_region_width = length;
}
void Filter::set_height(SVGLength const &length)
-{
+{
if (length._set)
_region_height = length;
}
_y_pixels = -1;
}
-} /* namespace NR */
+int Filter::_resolution_limit(FilterQuality const quality) const {
+ int limit = -1;
+ switch (quality) {
+ case FILTER_QUALITY_WORST:
+ limit = 32;
+ break;
+ case FILTER_QUALITY_WORSE:
+ limit = 64;
+ break;
+ case FILTER_QUALITY_NORMAL:
+ limit = 256;
+ break;
+ case FILTER_QUALITY_BETTER:
+ case FILTER_QUALITY_BEST:
+ default:
+ break;
+ }
+ return limit;
+}
+
+std::pair<double,double> Filter::_filter_resolution(
+ Geom::Rect const &area, Geom::Matrix const &trans,
+ FilterQuality const filterquality) const
+{
+ std::pair<double,double> resolution;
+ if (_x_pixels > 0) {
+ double y_len;
+ if (_y_pixels > 0) {
+ y_len = _y_pixels;
+ } else {
+ y_len = (_x_pixels * (area.max()[Y] - area.min()[Y]))
+ / (area.max()[X] - area.min()[X]);
+ }
+ resolution.first = _x_pixels;
+ resolution.second = y_len;
+ } else {
+ Geom::Point origo = area.min();
+ origo *= trans;
+ Geom::Point max_i(area.max()[X], area.min()[Y]);
+ max_i *= trans;
+ Geom::Point max_j(area.min()[X], area.max()[Y]);
+ max_j *= trans;
+ double i_len = sqrt((origo[X] - max_i[X]) * (origo[X] - max_i[X])
+ + (origo[Y] - max_i[Y]) * (origo[Y] - max_i[Y]));
+ double j_len = sqrt((origo[X] - max_j[X]) * (origo[X] - max_j[X])
+ + (origo[Y] - max_j[Y]) * (origo[Y] - max_j[Y]));
+ int limit = _resolution_limit(filterquality);
+ if (limit > 0 && (i_len > limit || j_len > limit)) {
+ double aspect_ratio = i_len / j_len;
+ if (i_len > j_len) {
+ i_len = limit;
+ j_len = i_len / aspect_ratio;
+ }
+ else {
+ j_len = limit;
+ i_len = j_len * aspect_ratio;
+ }
+ }
+ resolution.first = i_len;
+ resolution.second = j_len;
+ }
+ return resolution;
+}
+
+} /* namespace Filters */
+} /* namespace Inkscape */
/*
Local Variables: