![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
index a3c361fb101531b0c1f4f46fa0ec2a4cc0b09eab..f7a04fd50383541d17dbd62f395b26ff993299a5 100644 (file)
* Author:
* Niko Kiirala <niko@kiirala.com>
*
- * Copyright (C) 2006 Niko Kiirala
+ * Copyright (C) 2006,2007 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-gaussian.h"
#include "display/nr-filter-slot.h"
#include "display/nr-filter-types.h"
+#include "display/nr-filter-units.h"
+
+#include "display/nr-filter-blend.h"
+#include "display/nr-filter-composite.h"
+#include "display/nr-filter-convolve-matrix.h"
+#include "display/nr-filter-colormatrix.h"
+#include "display/nr-filter-component-transfer.h"
+#include "display/nr-filter-diffuselighting.h"
+#include "display/nr-filter-displacement-map.h"
+#include "display/nr-filter-flood.h"
+#include "display/nr-filter-gaussian.h"
+#include "display/nr-filter-image.h"
+#include "display/nr-filter-merge.h"
+#include "display/nr-filter-morphology.h"
+#include "display/nr-filter-offset.h"
+#include "display/nr-filter-specularlighting.h"
+#include "display/nr-filter-tile.h"
+#include "display/nr-filter-turbulence.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 "svg/svg-length.h"
#include "sp-filter-units.h"
-
-//#include "display/nr-arena-shape.h"
+#if defined (SOLARIS) && (SOLARIS == 8)
+#include "round.h"
+using Inkscape::round;
+#endif
namespace NR {
Filter::Filter()
{
- _primitive_count = 1;
+ _primitive_count = 0;
_primitive_table_size = 1;
_primitive = new FilterPrimitive*[1];
- _primitive[0] = new FilterGaussian;
+ _primitive[0] = NULL;
+ //_primitive_count = 1;
+ //_primitive[0] = new FilterGaussian;
_common_init();
}
void Filter::_common_init() {
_slot_count = 1;
+ // Having "not set" here as value means the output of last filter
+ // primitive will be used as output of this filter
_output_slot = NR_FILTER_SLOT_NOT_SET;
+ // These are the default values for filter region,
+ // as specified in SVG standard
+ // NB: SVGLength.set takes prescaled percent values: -.10 means -10%
_region_x.set(SVGLength::PERCENT, -.10, 0);
_region_y.set(SVGLength::PERCENT, -.10, 0);
_region_width.set(SVGLength::PERCENT, 1.20, 0);
_region_height.set(SVGLength::PERCENT, 1.20, 0);
+ // Filter resolution, negative value here stands for "automatic"
_x_pixels = -1.0;
_y_pixels = -1.0;
int Filter::render(NRArenaItem const *item, NRPixBlock *pb)
{
- FilterSlot slot(_slot_count);
+ if (!_primitive[0]) {
+ // TODO: Should clear the input buffer instead of just returning
+ return 1;
+ }
+
+ Matrix trans = item->ctm;
+ FilterSlot slot(_slot_count, item);
+
+ 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])
+ {
+ // Code below assumes non-negative size.
+ return 1;
+ }
+
+ Rect filter_area = filter_effect_area(item_bbox);
+ if (item_bbox.isEmpty()) {
+ // 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
+ 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]));
+ units.set_automatic_resolution(true);
+ units.set_resolution(i_len, j_len);
+ }
+
+ units.set_paraller(false);
+ for (int i = 0 ; i < _primitive_count ; i++) {
+ if (_primitive[i]->get_input_traits() & TRAIT_PARALLER) {
+ units.set_paraller(true);
+ break;
+ }
+ }
+
+ slot.set_units(units);
+
NRPixBlock *in = new NRPixBlock;
- nr_pixblock_setup_fast(in, pb->mode,
- pb->area.x0, pb->area.y0,
+ nr_pixblock_setup_fast(in, pb->mode, pb->area.x0, pb->area.y0,
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");
+ return 0;
+ }
nr_blit_pixblock_pixblock(in, pb);
+ in->empty = FALSE;
slot.set(NR_FILTER_SOURCEGRAPHIC, in);
- in = NULL; // in is now handled by FilterSlot, we should not touch it
-
- _primitive[0]->render(slot, *item->ctm);
- NRPixBlock *out = slot.get(_output_slot);
+ // Check that we are rendering a non-empty area
+ 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)",
+ 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
- int size = (pb->area.x1 - pb->area.x0)
- * (pb->area.y1 - pb->area.y0)
- * NR_PIXBLOCK_BPP(pb);
- memset(NR_PIXBLOCK_PX(pb), 0, size);
+ for (int i = 0 ; i < _primitive_count ; i++) {
+ _primitive[i]->render(slot, units);
+ }
- nr_blit_pixblock_pixblock(pb, out);
+ slot.get_final(_output_slot, pb);
+ // Take note of the amount of used image slots
+ // -> next time this filter is rendered, we can reserve enough slots
+ // immediately
_slot_count = slot.get_slot_count();
return 0;
}
-int Filter::get_enlarge(Matrix const &m)
-{
- int enlarge = 0;
- for ( int i = 0 ; i < _primitive_count ; i++ ) {
- if(_primitive[i]) enlarge += _primitive[i]->get_enlarge(m);
+void Filter::area_enlarge(NRRectL &bbox, Matrix const &m) {
+ for (int i = 0 ; i < _primitive_count ; i++) {
+ if (_primitive[i]) _primitive[i]->area_enlarge(bbox, m);
}
- return enlarge;
}
-void Filter::bbox_enlarge(NRRectL &bbox)
+void Filter::bbox_enlarge(NRRectL &bbox) {
+ // Modifying empty bounding boxes confuses rest of the renderer, so
+ // let's not do that.
+ if (bbox.x0 > bbox.x1 || bbox.y0 > bbox.y1) return;
+
+ /* 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);
+
+ 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];
+}
+
+Rect Filter::filter_effect_area(Rect const &bbox)
{
- int len_x = bbox.x1 - bbox.x0;
- int len_y = bbox.y1 - bbox.y0;
+ 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 */
_region_x.update(12, 6, len_x);
_region_y.update(12, 6, len_y);
_region_width.update(12, 6, len_x);
_region_height.update(12, 6, len_y);
- if (_filter_units == SP_FILTER_UNITS_BOUNDINGBOX) {
- if (_region_x.unit == PERCENT) {
- bbox.x0 += _region_x.computed;
+ if (_filter_units == SP_FILTER_UNITS_OBJECTBOUNDINGBOX) {
+ if (_region_x.unit == SVGLength::PERCENT) {
+ minp[X] = bbox.min()[X] + _region_x.computed;
} else {
- bbox.x0 += _region_x.computed * len_x;
+ minp[X] = bbox.min()[X] + _region_x.computed * len_x;
}
- if (_region_width.unit == PERCENT) {
- bbox.x1 = bbox.x0 + _region_width.computed;
+ if (_region_width.unit == SVGLength::PERCENT) {
+ maxp[X] = minp[X] + _region_width.computed;
} else {
- bbox.x1 = bbox.x0 + _region_width.computed * len_x;
+ maxp[X] = minp[X] + _region_width.computed * len_x;
}
- if (_region_y.unit == PERCENT) {
- bbox.y0 += _region_y.computed;
+ if (_region_y.unit == SVGLength::PERCENT) {
+ minp[Y] = bbox.min()[Y] + _region_y.computed;
} else {
- bbox.y0 += _region_y.computed * len_y;
+ minp[Y] = bbox.min()[Y] + _region_y.computed * len_y;
}
- if (_region_height.unit == PERCENT) {
- bbox.y1 = bbox.y0 + _region_height.computed;
+ if (_region_height.unit == SVGLength::PERCENT) {
+ maxp[Y] = minp[Y] + _region_height.computed;
} else {
- bbox.y1 = bbox.y0 + _region_height.computed * len_y;
+ maxp[Y] = minp[Y] + _region_height.computed * len_y;
}
} else if (_filter_units == SP_FILTER_UNITS_USERSPACEONUSE) {
/* TODO: make sure bbox and fe region are in same coordinate system */
- bbox.x0 = _region_x.computed;
- bbox.x1 = bbox.x0 + _region_width.computed;
- bbox.y0 = _region_y.computed;
- bbox.y1 = bbox.y0 + _region_height.computed;
+ minp[X] = _region_x.computed;
+ maxp[X] = minp[X] + _region_width.computed;
+ 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");
}
+ 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.
+ */
typedef FilterPrimitive*(*FilterConstructor)();
static FilterConstructor _constructor[NR_FILTER_ENDPRIMITIVETYPE];
void Filter::_create_constructor_table()
{
+ // Constructor table won't change in run-time, so no need to recreate
static bool created = false;
if(created) return;
- /* Filter effects not yet implemented are set to NULL */
- _constructor[NR_FILTER_BLEND] = NULL;
- _constructor[NR_FILTER_COLORMATRIX] = NULL;
- _constructor[NR_FILTER_COMPONENTTRANSFER] = NULL;
- _constructor[NR_FILTER_COMPOSITE] = NULL;
- _constructor[NR_FILTER_CONVOLVEMATRIX] = NULL;
- _constructor[NR_FILTER_DIFFUSELIGHTING] = NULL;
- _constructor[NR_FILTER_DISPLACEMENTMAP] = NULL;
- _constructor[NR_FILTER_FLOOD] = NULL;
+/* Some filter classes are not implemented yet.
+ Some of them still have only boilerplate code.*/
+ _constructor[NR_FILTER_BLEND] = &FilterBlend::create;
+ _constructor[NR_FILTER_COLORMATRIX] = &FilterColorMatrix::create;
+ _constructor[NR_FILTER_COMPONENTTRANSFER] = &FilterComponentTransfer::create;
+ _constructor[NR_FILTER_COMPOSITE] = &FilterComposite::create;
+ _constructor[NR_FILTER_CONVOLVEMATRIX] = &FilterConvolveMatrix::create;
+ _constructor[NR_FILTER_DIFFUSELIGHTING] = &FilterDiffuseLighting::create;
+ _constructor[NR_FILTER_DISPLACEMENTMAP] = &FilterDisplacementMap::create;
+ _constructor[NR_FILTER_FLOOD] = &FilterFlood::create;
_constructor[NR_FILTER_GAUSSIANBLUR] = &FilterGaussian::create;
- _constructor[NR_FILTER_IMAGE] = NULL;
- _constructor[NR_FILTER_MERGE] = NULL;
- _constructor[NR_FILTER_MORPHOLOGY] = NULL;
- _constructor[NR_FILTER_OFFSET] = NULL;
- _constructor[NR_FILTER_SPECULARLIGHTING] = NULL;
- _constructor[NR_FILTER_TILE] = NULL;
- _constructor[NR_FILTER_TURBULENCE] = NULL;
+ _constructor[NR_FILTER_IMAGE] = &FilterImage::create;
+ _constructor[NR_FILTER_MERGE] = &FilterMerge::create;
+ _constructor[NR_FILTER_MORPHOLOGY] = &FilterMorphology::create;
+ _constructor[NR_FILTER_OFFSET] = &FilterOffset::create;
+ _constructor[NR_FILTER_SPECULARLIGHTING] = &FilterSpecularLighting::create;
+ _constructor[NR_FILTER_TILE] = &FilterTile::create;
+ _constructor[NR_FILTER_TURBULENCE] = &FilterTurbulence::create;
+ created = true;
}
+/** Helper method for enlarging table of filter primitives. When new
+ * primitives are added, but we have no space for them, this function
+ * makes some more space.
+ */
void Filter::_enlarge_primitive_table() {
FilterPrimitive **new_tbl = new FilterPrimitive*[_primitive_table_size * 2];
for (int i = 0 ; i < _primitive_count ; i++) {
_primitive = new_tbl;
}
-FilterPrimitive *Filter::add_primitive(FilterPrimitiveType type)
+int Filter::add_primitive(FilterPrimitiveType type)
{
_create_constructor_table();
// Check that we can create a new filter of specified type
if (type < 0 || type >= NR_FILTER_ENDPRIMITIVETYPE)
- return NULL;
- if (!_constructor[type]) return NULL;
+ return -1;
+ if (!_constructor[type]) return -1;
FilterPrimitive *created = _constructor[type]();
// If there is no space for new filter primitive, enlarge the table
}
_primitive[_primitive_count] = created;
- return created;
+ int handle = _primitive_count;
+ _primitive_count++;
+ return handle;
}
-FilterPrimitive *Filter::replace_primitive(FilterPrimitive *target, FilterPrimitiveType type)
+int Filter::replace_primitive(int target, FilterPrimitiveType type)
{
_create_constructor_table();
// Check that target is valid primitive inside this filter
- int place = -1;
- for (int i = 0 ; i < _primitive_count ; i++) {
- if (target == _primitive[i]) {
- place = i;
- break;
- }
- }
- if (place < 0) return NULL;
+ if (target < 0) return -1;
+ if (target >= _primitive_count) return -1;
+ if (!_primitive[target]) return -1;
// Check that we can create a new filter of specified type
if (type < 0 || type >= NR_FILTER_ENDPRIMITIVETYPE)
- return NULL;
- if (!_constructor[type]) return NULL;
+ return -1;
+ if (!_constructor[type]) return -1;
FilterPrimitive *created = _constructor[type]();
// If there is no space for new filter primitive, enlarge the table
@@ -233,9 +374,14 @@ FilterPrimitive *Filter::replace_primitive(FilterPrimitive *target, FilterPrimit
_enlarge_primitive_table();
}
- delete target;
- _primitive[place] = created;
- return created;
+ delete _primitive[target];
+ _primitive[target] = created;
+ return target;
+}
+
+FilterPrimitive *Filter::get_primitive(int handle) {
+ if (handle < 0 || handle >= _primitive_count) return NULL;
+ return _primitive[handle];
}
void Filter::clear_primitives()
_primitive_count = 0;
}
+void Filter::set_x(SVGLength const &length)
+{
+ if (length._set)
+ _region_x = length;
+}
+void Filter::set_y(SVGLength const &length)
+{
+ if (length._set)
+ _region_y = length;
+}
+void Filter::set_width(SVGLength const &length)
+{
+ if (length._set)
+ _region_width = length;
+}
+void Filter::set_height(SVGLength const &length)
+{
+ if (length._set)
+ _region_height = length;
+}
+
+void Filter::set_resolution(double const pixels) {
+ if (pixels > 0) {
+ _x_pixels = pixels;
+ _y_pixels = pixels;
+ }
+}
+
+void Filter::set_resolution(double const x_pixels, double const y_pixels) {
+ if (x_pixels >= 0 && y_pixels >= 0) {
+ _x_pixels = x_pixels;
+ _y_pixels = y_pixels;
+ }
+}
+
+void Filter::reset_resolution() {
+ _x_pixels = -1;
+ _y_pixels = -1;
+}
+
} /* namespace NR */
/*