Adding upstream version 1.2.2.upstream/1.2.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 270 insertions, 0 deletions

diff --git a/src/object/sp-mesh-gradient.cpp b/src/object/sp-mesh-gradient.cpp
new file mode 100644
index 0000000..47293da
--- /dev/null
+++ b/src/object/sp-mesh-gradient.cpp
@@ -0,0 +1,270 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * TODO: insert short description here
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+#include <glibmm.h>
+
+#include "attributes.h"
+#include "display/cairo-utils.h"
+
+#include "sp-mesh-gradient.h"
+
+/*
+ * Mesh Gradient
+ */
+//#define MESH_DEBUG
+//#define OBJECT_TRACE
+
+SPMeshGradient::SPMeshGradient() : SPGradient(), type( SP_MESH_TYPE_COONS ), type_set(false) {
+#ifdef OBJECT_TRACE
+  objectTrace( "SPMeshGradient::SPMeshGradient" );
+#endif
+
+    // Start coordinate of mesh
+    this->x.unset(SVGLength::NONE, 0.0, 0.0);
+    this->y.unset(SVGLength::NONE, 0.0, 0.0);
+
+#ifdef OBJECT_TRACE
+  objectTrace( "SPMeshGradient::SPMeshGradient", false );
+#endif
+}
+
+SPMeshGradient::~SPMeshGradient() {
+#ifdef OBJECT_TRACE
+  objectTrace( "SPMeshGradient::~SPMeshGradient (empty function)" );
+  objectTrace( "SPMeshGradient::~SPMeshGradient", false );
+#endif
+}
+
+void SPMeshGradient::build(SPDocument *document, Inkscape::XML::Node *repr) {
+#ifdef OBJECT_TRACE
+  objectTrace( "SPMeshGradient::build" );
+#endif
+
+    SPGradient::build(document, repr);
+
+    // Start coordinate of meshgradient
+    this->readAttr(SPAttr::X);
+    this->readAttr(SPAttr::Y);
+
+    this->readAttr(SPAttr::TYPE);
+
+#ifdef OBJECT_TRACE
+    objectTrace( "SPMeshGradient::build", false );
+#endif
+}
+
+
+void SPMeshGradient::set(SPAttr key, gchar const *value) {
+#ifdef OBJECT_TRACE
+  objectTrace( "SPMeshGradient::set" );
+#endif
+
+    switch (key) {
+        case SPAttr::X:
+            if (!this->x.read(value)) {
+                this->x.unset(SVGLength::NONE, 0.0, 0.0);
+            }
+
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+
+        case SPAttr::Y:
+            if (!this->y.read(value)) {
+                this->y.unset(SVGLength::NONE, 0.0, 0.0);
+            }
+
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+
+        case SPAttr::TYPE:
+	    if (value) {
+	      if (!strcmp(value, "coons")) {
+		this->type = SP_MESH_TYPE_COONS;
+	      } else if (!strcmp(value, "bicubic")) {
+		this->type = SP_MESH_TYPE_BICUBIC;
+	      } else {
+		std::cerr << "SPMeshGradient::set(): invalid value " << value << std::endl;
+	      }
+	      this->type_set = TRUE;
+	    } else {
+	      // std::cout << "SPMeshGradient::set() No value " << std::endl;
+	      this->type = SP_MESH_TYPE_COONS;
+	      this->type_set = FALSE;
+	    }
+
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+
+        default:
+            SPGradient::set(key, value);
+            break;
+    }
+
+#ifdef OBJECT_TRACE
+    objectTrace( "SPMeshGradient::set", false );
+#endif
+}
+
+/**
+ * Write mesh gradient attributes to associated repr.
+ */
+Inkscape::XML::Node* SPMeshGradient::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
+#ifdef OBJECT_TRACE
+    objectTrace( "SPMeshGradient::write", false );
+#endif
+
+    if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
+        repr = xml_doc->createElement("svg:meshgradient");
+    }
+
+    if ((flags & SP_OBJECT_WRITE_ALL) || this->x._set) {
+    	repr->setAttributeSvgDouble("x", this->x.computed);
+    }
+
+    if ((flags & SP_OBJECT_WRITE_ALL) || this->y._set) {
+    	repr->setAttributeSvgDouble("y", this->y.computed);
+    }
+
+    if ((flags & SP_OBJECT_WRITE_ALL) || this->type_set) {
+        switch (this->type) {
+	    case SP_MESH_TYPE_COONS:
+	      repr->setAttribute("type", "coons");
+	      break;
+	    case SP_MESH_TYPE_BICUBIC:
+	      repr->setAttribute("type", "bicubic");
+	      break;
+	    default:
+	      // Do nothing
+	      break;
+	}
+    }
+
+    SPGradient::write(xml_doc, repr, flags);
+
+#ifdef OBJECT_TRACE
+    objectTrace( "SPMeshGradient::write", false );
+#endif
+    return repr;
+}
+
+cairo_pattern_t* SPMeshGradient::pattern_new(cairo_t * /*ct*/,
+  Geom::OptRect const &bbox,
+	double opacity)
+{
+  using Geom::X;
+  using Geom::Y;
+
+#ifdef MESH_DEBUG
+  std::cout << "sp_meshgradient_create_pattern: " << (*bbox) << " " << opacity << std::endl;
+#endif
+
+  this->ensureArray();
+
+  cairo_pattern_t *cp = nullptr;
+
+  SPMeshNodeArray* my_array = &array;
+
+  if( type_set ) {
+    switch (type) {
+    case SP_MESH_TYPE_COONS:
+      // std::cout << "SPMeshGradient::pattern_new: Coons" << std::endl;
+      break;
+    case SP_MESH_TYPE_BICUBIC:
+      array.bicubic( &array_smoothed, type );
+      my_array = &array_smoothed;
+      break;
+    }
+  }
+
+  cp = cairo_pattern_create_mesh();
+
+  for( unsigned int i = 0; i < my_array->patch_rows(); ++i ) {
+    for( unsigned int j = 0; j < my_array->patch_columns(); ++j ) {
+
+      SPMeshPatchI patch( &(my_array->nodes), i, j );
+
+      cairo_mesh_pattern_begin_patch( cp );
+      cairo_mesh_pattern_move_to( cp, patch.getPoint( 0, 0 )[X], patch.getPoint( 0, 0 )[Y] );
+
+      for( unsigned int k = 0; k < 4; ++k ) {
+#ifdef DEBUG_MESH
+	std::cout << i << " " << j << " "
+		  << patch.getPathType( k ) << "  (";
+	for( int p = 0; p < 4; ++p ) {
+	  std::cout << patch.getPoint( k, p );
+	}
+	std::cout << ") "
+		  << patch.getColor( k ).toString() << std::endl;
+#endif
+
+	switch ( patch.getPathType( k ) ) {
+	case 'l':
+	case 'L':
+	case 'z':
+	case 'Z':
+	  cairo_mesh_pattern_line_to( cp,
+				      patch.getPoint( k, 3 )[X],
+				      patch.getPoint( k, 3 )[Y] );
+	  break;
+	case 'c':
+	case 'C':
+	  {
+	    std::vector< Geom::Point > pts = patch.getPointsForSide( k );
+	    cairo_mesh_pattern_curve_to( cp,
+					 pts[1][X], pts[1][Y],
+					 pts[2][X], pts[2][Y],
+					 pts[3][X], pts[3][Y] );
+	    break;
+	  }
+	default:
+	  // Shouldn't happen
+	  std::cout << "sp_mesh_create_pattern: path error" << std::endl;
+	}
+
+	if( patch.tensorIsSet(k) ) {
+	  // Tensor point defined relative to corner.
+	  Geom::Point t = patch.getTensorPoint(k);
+	  cairo_mesh_pattern_set_control_point( cp, k, t[X], t[Y] );
+	  //std::cout << "  sp_mesh_create_pattern: tensor " << k
+	  //          << " set to " << t << "." << std::endl;
+	} else {
+	  // Geom::Point t = patch.coonsTensorPoint(k);
+	  //std::cout << "  sp_mesh_create_pattern: tensor " << k
+	  //          << " calculated as " << t << "." <<std::endl;
+	}
+
+	cairo_mesh_pattern_set_corner_color_rgba(
+						 cp, k,
+						 patch.getColor( k ).v.c[0],
+						 patch.getColor( k ).v.c[1],
+						 patch.getColor( k ).v.c[2],
+						 patch.getOpacity( k ) * opacity );
+      }
+
+      cairo_mesh_pattern_end_patch( cp );
+    }
+  }
+
+  // set pattern matrix
+  Geom::Affine gs2user = this->gradientTransform;
+  if (this->getUnits() == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX) {
+    Geom::Affine bbox2user(bbox->width(), 0, 0, bbox->height(), bbox->left(), bbox->top());
+    gs2user *= bbox2user;
+  }
+  ink_cairo_pattern_set_matrix(cp, gs2user.inverse());
+
+  /*
+    cairo_pattern_t *cp = cairo_pattern_create_radial(
+    rg->fx.computed, rg->fy.computed, 0,
+    rg->cx.computed, rg->cy.computed, rg->r.computed);
+    sp_gradient_pattern_common_setup(cp, gr, bbox, opacity);
+  */
+
+  return cp;
+}