src/sp-feconvolvematrix.cpp

   1 #define __SP_FECONVOLVEMATRIX_CPP__
   2
   3 /** \file
   4  * SVG <feConvolveMatrix> implementation.
   5  *
   6  */
   7 /*
   8  * Authors:
   9  *   Felipe Corrêa da Silva Sanches <felipe.sanches@gmail.com>
  10  *   hugo Rodrigues <haa.rodrigues@gmail.com>
  11  *
  12  * Copyright (C) 2006 Hugo Rodrigues
  13  *
  14  * Released under GNU GPL, read the file 'COPYING' for more information
  15  */
  16
  17 #ifdef HAVE_CONFIG_H
  18 # include "config.h"
  19 #endif
  20
  21 #include <vector>
  22 #include "attributes.h"
  23 #include "svg/svg.h"
  24 #include "sp-feconvolvematrix.h"
  25 #include "helper-fns.h"
  26 #include "xml/repr.h"
  27 #include "display/nr-filter-convolve-matrix.h"
  28
  29 /* FeConvolveMatrix base class */
  30
  31 static void sp_feConvolveMatrix_class_init(SPFeConvolveMatrixClass *klass);
  32 static void sp_feConvolveMatrix_init(SPFeConvolveMatrix *feConvolveMatrix);
  33
  34 static void sp_feConvolveMatrix_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
  35 static void sp_feConvolveMatrix_release(SPObject *object);
  36 static void sp_feConvolveMatrix_set(SPObject *object, unsigned int key, gchar const *value);
  37 static void sp_feConvolveMatrix_update(SPObject *object, SPCtx *ctx, guint flags);
  38 static Inkscape::XML::Node *sp_feConvolveMatrix_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
  39 static void sp_feConvolveMatrix_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter);
  40
  41 static SPFilterPrimitiveClass *feConvolveMatrix_parent_class;
  42
  43 GType
  44 sp_feConvolveMatrix_get_type()
  45 {
  46     static GType feConvolveMatrix_type = 0;
  47
  48     if (!feConvolveMatrix_type) {
  49         GTypeInfo feConvolveMatrix_info = {
  50             sizeof(SPFeConvolveMatrixClass),
  51             NULL, NULL,
  52             (GClassInitFunc) sp_feConvolveMatrix_class_init,
  53             NULL, NULL,
  54             sizeof(SPFeConvolveMatrix),
  55             16,
  56             (GInstanceInitFunc) sp_feConvolveMatrix_init,
  57             NULL,    /* value_table */
  58         };
  59         feConvolveMatrix_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeConvolveMatrix", &feConvolveMatrix_info, (GTypeFlags)0);
  60     }
  61     return feConvolveMatrix_type;
  62 }
  63
  64 static void
  65 sp_feConvolveMatrix_class_init(SPFeConvolveMatrixClass *klass)
  66 {
  67     SPObjectClass *sp_object_class = (SPObjectClass *)klass;
  68     SPFilterPrimitiveClass *sp_primitive_class = (SPFilterPrimitiveClass *)klass;
  69
  70     feConvolveMatrix_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
  71
  72     sp_object_class->build = sp_feConvolveMatrix_build;
  73     sp_object_class->release = sp_feConvolveMatrix_release;
  74     sp_object_class->write = sp_feConvolveMatrix_write;
  75     sp_object_class->set = sp_feConvolveMatrix_set;
  76     sp_object_class->update = sp_feConvolveMatrix_update;
  77
  78     sp_primitive_class->build_renderer = sp_feConvolveMatrix_build_renderer;
  79 }
  80
  81 static void
  82 sp_feConvolveMatrix_init(SPFeConvolveMatrix *feConvolveMatrix)
  83 {}
  84
  85 /**
  86  * Reads the Inkscape::XML::Node, and initializes SPFeConvolveMatrix variables.  For this to get called,
  87  * our name must be associated with a repr via "sp_object_type_register".  Best done through
  88  * sp-object-repr.cpp's repr_name_entries array.
  89  */
  90 static void
  91 sp_feConvolveMatrix_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
  92 {
  93     if (((SPObjectClass *) feConvolveMatrix_parent_class)->build) {
  94         ((SPObjectClass *) feConvolveMatrix_parent_class)->build(object, document, repr);
  95     }
  96
  97     /*LOAD ATTRIBUTES FROM REPR HERE*/
  98     sp_object_read_attr(object, "order");
  99     sp_object_read_attr(object, "kernelMatrix");
 100     sp_object_read_attr(object, "divisor");
 101     sp_object_read_attr(object, "bias");
 102     sp_object_read_attr(object, "targetX");
 103     sp_object_read_attr(object, "targetY");
 104     sp_object_read_attr(object, "edgeMode");
 105     sp_object_read_attr(object, "kernelUnitLength");
 106     sp_object_read_attr(object, "preserveAlpha");
 107
 108 }
 109
 110 /**
 111  * Drops any allocated memory.
 112  */
 113 static void
 114 sp_feConvolveMatrix_release(SPObject *object)
 115 {
 116     if (((SPObjectClass *) feConvolveMatrix_parent_class)->release)
 117         ((SPObjectClass *) feConvolveMatrix_parent_class)->release(object);
 118 }
 119
 120 static int sp_feConvolveMatrix_read_edgeMode(gchar const *value){
 121     if (!value) return 0; //duplicate is default
 122     switch(value[0]){
 123         case 'd':
 124             if (strncmp(value, "duplicate", 9) == 0) return 0;
 125             break;
 126         case 'w':
 127             if (strncmp(value, "wrap", 4) == 0) return 1;
 128             break;
 129         case 'n':
 130             if (strncmp(value, "none", 4) == 0) return 2;
 131             break;
 132     }
 133     return 0; //duplicate is default
 134 }
 135
 136 /**
 137  * Sets a specific value in the SPFeConvolveMatrix.
 138  */
 139 static void
 140 sp_feConvolveMatrix_set(SPObject *object, unsigned int key, gchar const *value)
 141 {
 142     SPFeConvolveMatrix *feConvolveMatrix = SP_FECONVOLVEMATRIX(object);
 143     (void)feConvolveMatrix;
 144     double read_num;
 145     int read_int;
 146     bool read_bool;
 147
 148     switch(key) {
 149         /*DEAL WITH SETTING ATTRIBUTES HERE*/
 150         case SP_ATTR_ORDER:
 151             feConvolveMatrix->order.set(value);
 152             //From SVG spec: If <orderY> is not provided, it defaults to <orderX>.
 153             if (feConvolveMatrix->order.optNumIsSet() == false)
 154                 feConvolveMatrix->order.setOptNumber(feConvolveMatrix->order.getNumber());
 155             object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 156             break;
 157         case SP_ATTR_KERNELMATRIX:
 158             feConvolveMatrix->kernelMatrix = helperfns_read_vector(value, (int) (feConvolveMatrix->order.getNumber() * feConvolveMatrix->order.getOptNumber()));
 159             object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 160             break;
 161         case SP_ATTR_DIVISOR:
 162             read_num = helperfns_read_number(value);
 163             if (read_num != feConvolveMatrix->divisor){
 164                 feConvolveMatrix->divisor = read_num;
 165                 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 166             }
 167             break;
 168         case SP_ATTR_BIAS:
 169             read_num = helperfns_read_number(value);
 170             if (read_num != feConvolveMatrix->bias){
 171                 feConvolveMatrix->bias = read_num;
 172                 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 173             }
 174             break;
 175         case SP_ATTR_TARGETX:
 176             read_int = (int) helperfns_read_number(value);
 177             if (read_int != feConvolveMatrix->targetX){
 178                 feConvolveMatrix->targetX = read_int;
 179                 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 180             }
 181             break;
 182         case SP_ATTR_TARGETY:
 183             read_int = (int) helperfns_read_number(value);
 184             if (read_int != feConvolveMatrix->targetY){
 185                 feConvolveMatrix->targetY = read_int;
 186                 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 187             }
 188             break;
 189         case SP_ATTR_EDGEMODE:
 190             read_int = (int) sp_feConvolveMatrix_read_edgeMode(value);
 191             if (read_int != feConvolveMatrix->edgeMode){
 192                 feConvolveMatrix->edgeMode = read_int;
 193                 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 194             }
 195             break;
 196         case SP_ATTR_KERNELUNITLENGTH:
 197             feConvolveMatrix->kernelUnitLength.set(value);
 198             object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 199             break;
 200         case SP_ATTR_PRESERVEALPHA:
 201             read_bool = helperfns_read_bool(value, false);
 202             if (read_bool != feConvolveMatrix->preserveAlpha){
 203                 feConvolveMatrix->preserveAlpha = read_bool;
 204                 object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
 205             }
 206             break;
 207         default:
 208             if (((SPObjectClass *) feConvolveMatrix_parent_class)->set)
 209                 ((SPObjectClass *) feConvolveMatrix_parent_class)->set(object, key, value);
 210             break;
 211     }
 212
 213 }
 214
 215 /**
 216  * Receives update notifications.
 217  */
 218 static void
 219 sp_feConvolveMatrix_update(SPObject *object, SPCtx *ctx, guint flags)
 220 {
 221     if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG |
 222                  SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
 223
 224         /* do something to trigger redisplay, updates? */
 225
 226     }
 227
 228     if (((SPObjectClass *) feConvolveMatrix_parent_class)->update) {
 229         ((SPObjectClass *) feConvolveMatrix_parent_class)->update(object, ctx, flags);
 230     }
 231 }
 232
 233 /**
 234  * Writes its settings to an incoming repr object, if any.
 235  */
 236 static Inkscape::XML::Node *
 237 sp_feConvolveMatrix_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
 238 {
 239     // Inkscape-only object, not copied during an "plain SVG" dump:
 240     if (flags & SP_OBJECT_WRITE_EXT) {
 241         if (repr) {
 242             // is this sane?
 243             repr->mergeFrom(SP_OBJECT_REPR(object), "id");
 244         } else {
 245             repr = SP_OBJECT_REPR(object)->duplicate(NULL); // FIXME
 246         }
 247     }
 248
 249     if (((SPObjectClass *) feConvolveMatrix_parent_class)->write) {
 250         ((SPObjectClass *) feConvolveMatrix_parent_class)->write(object, repr, flags);
 251     }
 252
 253     return repr;
 254 }
 255
 256 static void sp_feConvolveMatrix_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter) {
 257     g_assert(primitive != NULL);
 258     g_assert(filter != NULL);
 259
 260     SPFeConvolveMatrix *sp_convolve = SP_FECONVOLVEMATRIX(primitive);
 261
 262     int primitive_n = filter->add_primitive(NR::NR_FILTER_CONVOLVEMATRIX);
 263     NR::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
 264     NR::FilterConvolveMatrix *nr_convolve = dynamic_cast<NR::FilterConvolveMatrix*>(nr_primitive);
 265     g_assert(nr_convolve != NULL);
 266
 267     sp_filter_primitive_renderer_common(primitive, nr_primitive);
 268
 269     nr_convolve->set_targetX(sp_convolve->targetX);
 270     nr_convolve->set_targetY(sp_convolve->targetY);
 271     nr_convolve->set_orderX( (int)sp_convolve->order.getNumber() );
 272     nr_convolve->set_orderY( (int)sp_convolve->order.getOptNumber() );
 273     nr_convolve->set_kernelMatrix(sp_convolve->kernelMatrix);
 274     nr_convolve->set_divisor(sp_convolve->divisor);
 275     nr_convolve->set_bias(sp_convolve->bias);
 276
 277 }
 278 /*
 279   Local Variables:
 280   mode:c++
 281   c-file-style:"stroustrup"
 282   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 283   indent-tabs-mode:nil
 284   fill-column:99
 285   End:
 286 */
 287 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :