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index 35d8804e789a3c22d072b313c26f02e8e8645fe4..34a33e2b88bbcd4acc53f4916c7a7858c768aee0 100644 (file)
*/
#include <glib.h>
+#include <cmath>
#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/pixblock-scaler.h"
+#include "display/pixblock-transform.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-scale.h"
#include "svg/svg-length.h"
#include "sp-filter-units.h"
+#if defined (SOLARIS_2_8)
+#include "round.h"
+using Inkscape::round;
+#endif
+
+__attribute__ ((const))
+inline static int _max4(const double a, const double b,
+ const double c, const double d) {
+ double ret = a;
+ if (b > ret) ret = b;
+ if (c > ret) ret = c;
+ if (d > ret) ret = d;
+ return (int)round(ret);
+}
-//#include "display/nr-arena-shape.h"
+__attribute__ ((const))
+inline static int _min4(const double a, const double b,
+ const double c, const double d) {
+ double ret = a;
+ if (b < ret) ret = b;
+ if (c < ret) ret = c;
+ if (d < ret) ret = d;
+ return (int)round(ret);
+}
namespace NR {
_primitive_count = 0;
_primitive_table_size = 1;
_primitive = new FilterPrimitive*[1];
- _primitive[0] = NULL;
+ _primitive[0] = NULL;
//_primitive_count = 1;
//_primitive[0] = new FilterGaussian;
_common_init();
int Filter::render(NRArenaItem const *item, NRPixBlock *pb)
{
+ if(!_primitive[0]) { // if there are no primitives, do nothing
+ return 0;
+ }
+
Matrix trans = *item->ctm;
+ Matrix paraller_trans = trans;
+ bool notparaller = false;
FilterSlot slot(_slot_count, item);
NRPixBlock *in = new NRPixBlock;
- // First, if filter resolution is not set to automatic, we should
- // scale the input image to correct resolution
- if (_x_pixels >= 0) {
+ // If filter effects region is not paraller to viewport,
+ // we must first undo the rotation / shear.
+ // It will be redone after filtering.
+ // If there is only rotation and uniform scaling (zoom), let's skip this,
+ // as it will not make a difference with gaussian blur.
+ if ((fabs(trans[1]) > 1e-6 || fabs(trans[2]) > 1e-6) &&
+ !(fabs(trans[0] - trans[3]) < 1e-6 && fabs(trans[1] + trans[2]) < 1e-6)) {
+ notparaller = true;
+
+ // TODO: if filter resolution is specified, scaling should be set
+ // according to that
+ double scaling_factor = sqrt(trans.expansionX() * trans.expansionX() +
+ trans.expansionY() * trans.expansionY());
+ scale scaling(scaling_factor, scaling_factor);
+ scale scaling_inv(1.0 / scaling_factor, 1.0 / scaling_factor);
+ trans *= scaling_inv;
+ paraller_trans.set_identity();
+ paraller_trans *= scaling;
+
+ Matrix itrans = trans.inverse();
+ int x0 = pb->area.x0;
+ int y0 = pb->area.y0;
+ int x1 = pb->area.x1;
+ int y1 = pb->area.y1;
+ int min_x = _min4(itrans[0] * x0 + itrans[2] * y0 + itrans[4],
+ itrans[0] * x0 + itrans[2] * y1 + itrans[4],
+ itrans[0] * x1 + itrans[2] * y0 + itrans[4],
+ itrans[0] * x1 + itrans[2] * y1 + itrans[4]);
+ int max_x = _max4(itrans[0] * x0 + itrans[2] * y0 + itrans[4],
+ itrans[0] * x0 + itrans[2] * y1 + itrans[4],
+ itrans[0] * x1 + itrans[2] * y0 + itrans[4],
+ itrans[0] * x1 + itrans[2] * y1 + itrans[4]);
+ int min_y = _min4(itrans[1] * x0 + itrans[3] * y0 + itrans[5],
+ itrans[1] * x0 + itrans[3] * y1 + itrans[5],
+ itrans[1] * x1 + itrans[3] * y0 + itrans[5],
+ itrans[1] * x1 + itrans[3] * y1 + itrans[5]);
+ int max_y = _max4(itrans[1] * x0 + itrans[3] * y0 + itrans[5],
+ itrans[1] * x0 + itrans[3] * y1 + itrans[5],
+ itrans[1] * x1 + itrans[3] * y0 + itrans[5],
+ itrans[1] * x1 + itrans[3] * y1 + itrans[5]);
+
+ nr_pixblock_setup_fast(in, pb->mode,
+ min_x, min_y,
+ max_x, max_y, true);
+ if (in->size != NR_PIXBLOCK_SIZE_TINY && in->data.px == NULL) // memory allocation failed
+ return 0;
+ transform_nearest(in, pb, itrans);
+ } else if (_x_pixels >= 0) {
+ // If filter resolution is not set to automatic, we should
+ // scale the input image to correct resolution
/* If filter resolution is zero, the object should not be rendered */
if (_x_pixels == 0 || _y_pixels == 0) {
int size = (pb->area.x1 - pb->area.x0)
}
if (y_len < 1) y_len = 1;
nr_pixblock_setup_fast(in, pb->mode, 0, 0, x_len, y_len, true);
+ if (in->size != NR_PIXBLOCK_SIZE_TINY && in->data.px == NULL) // memory allocation failed
+ return 0;
scale_bicubic(in, pb);
scale res_scaling(x_len / (double)(pb->area.x1 - pb->area.x0),
y_len / (double)(pb->area.y1 - pb->area.y0));
- trans *= res_scaling;
+ paraller_trans *= res_scaling;
} else {
// If filter resolution is automatic, just make copy of input image
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) // memory allocation failed
+ 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
- // TODO: loop through the primitives and render them one at a time
- if(_primitive[0])
- _primitive[0]->render(slot, trans);
-
+ for (int i = 0 ; i < _primitive_count ; i++) {
+ _primitive[i]->render(slot, paraller_trans);
+ }
NRPixBlock *out = slot.get(_output_slot);
// Clear the pixblock, where the output will be put
* NR_PIXBLOCK_BPP(pb);
memset(NR_PIXBLOCK_PX(pb), 0, size);
- // If the filter resolution is automatic, just copy our final image
- // to output pixblock, otherwise use bicubic scaling
- if (_x_pixels < 0) {
+ if (notparaller) {
+ transform_nearest(pb, out, trans);
+ } else if (_x_pixels < 0) {
+ // If the filter resolution is automatic, just copy our final image
+ // to output pixblock, otherwise use bicubic scaling
nr_blit_pixblock_pixblock(pb, out);
} else {
scale_bicubic(pb, out);
return 0;
}
-int Filter::get_enlarge(Matrix const &m)
-{
- // Just sum the enlargement factor of all filter elements.
- // TODO: this both sucks and blows for filters like feOffset
- // -> ditch this method and design a better one...
- 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)
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;
}
_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
@@ -307,9 +398,14 @@ 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 &lenght)
-{ /*write me*/ }
-void Filter::set_y(SVGLength &length)
-{ /*write me*/ }
-void Filter::set_width(SVGLength &length)
-{ /*write me*/ }
-void Filter::set_height(SVGLength &length)
-{ /*write me*/ }
+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 */