src/sp-feimage.cpp

   1         #define __SP_FEIMAGE_CPP__
   2
   3 /** \file
   4  * SVG <feImage> implementation.
   5  *
   6  */
   7 /*
   8  * Authors:
   9  *   hugo Rodrigues <haa.rodrigues@gmail.com>
  10  *
  11  * Copyright (C) 2006 Hugo Rodrigues
  12  *
  13  * Released under GNU GPL, read the file 'COPYING' for more information
  14  */
  15
  16 #ifdef HAVE_CONFIG_H
  17 # include "config.h"
  18 #endif
  19
  20 #include "attributes.h"
  21 #include "svg/svg.h"
  22 #include "sp-feimage.h"
  23 #include "xml/repr.h"
  24
  25
  26 /* FeImage base class */
  27
  28 static void sp_feImage_class_init(SPFeImageClass *klass);
  29 static void sp_feImage_init(SPFeImage *feImage);
  30
  31 static void sp_feImage_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
  32 static void sp_feImage_release(SPObject *object);
  33 static void sp_feImage_set(SPObject *object, unsigned int key, gchar const *value);
  34 static void sp_feImage_update(SPObject *object, SPCtx *ctx, guint flags);
  35 static Inkscape::XML::Node *sp_feImage_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
  36
  37 static SPFilterPrimitiveClass *feImage_parent_class;
  38
  39 GType
  40 sp_feImage_get_type()
  41 {
  42     static GType feImage_type = 0;
  43
  44     if (!feImage_type) {
  45         GTypeInfo feImage_info = {
  46             sizeof(SPFeImageClass),
  47             NULL, NULL,
  48             (GClassInitFunc) sp_feImage_class_init,
  49             NULL, NULL,
  50             sizeof(SPFeImage),
  51             16,
  52             (GInstanceInitFunc) sp_feImage_init,
  53             NULL,    /* value_table */
  54         };
  55         feImage_type = g_type_register_static(SP_TYPE_FILTER_PRIMITIVE, "SPFeImage", &feImage_info, (GTypeFlags)0);
  56     }
  57     return feImage_type;
  58 }
  59
  60 static void
  61 sp_feImage_class_init(SPFeImageClass *klass)
  62 {
  63     SPObjectClass *sp_object_class = (SPObjectClass *)klass;
  64
  65     feImage_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
  66
  67     sp_object_class->build = sp_feImage_build;
  68     sp_object_class->release = sp_feImage_release;
  69     sp_object_class->write = sp_feImage_write;
  70     sp_object_class->set = sp_feImage_set;
  71     sp_object_class->update = sp_feImage_update;
  72 }
  73
  74 static void
  75 sp_feImage_init(SPFeImage *feImage)
  76 {
  77 }
  78
  79 /**
  80  * Reads the Inkscape::XML::Node, and initializes SPFeImage variables.  For this to get called,
  81  * our name must be associated with a repr via "sp_object_type_register".  Best done through
  82  * sp-object-repr.cpp's repr_name_entries array.
  83  */
  84 static void
  85 sp_feImage_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
  86 {
  87     if (((SPObjectClass *) feImage_parent_class)->build) {
  88         ((SPObjectClass *) feImage_parent_class)->build(object, document, repr);
  89     }
  90
  91     /*LOAD ATTRIBUTES FROM REPR HERE*/
  92 }
  93
  94 /**
  95  * Drops any allocated memory.
  96  */
  97 static void
  98 sp_feImage_release(SPObject *object)
  99 {
 100
 101     if (((SPObjectClass *) feImage_parent_class)->release)
 102         ((SPObjectClass *) feImage_parent_class)->release(object);
 103 }
 104
 105 /**
 106  * Sets a specific value in the SPFeImage.
 107  */
 108 static void
 109 sp_feImage_set(SPObject *object, unsigned int key, gchar const *value)
 110 {
 111     SPFeImage *feImage = SP_FEIMAGE(object);
 112     (void)feImage;
 113
 114     switch(key) {
 115         /*DEAL WITH SETTING ATTRIBUTES HERE*/
 116         default:
 117             if (((SPObjectClass *) feImage_parent_class)->set)
 118                 ((SPObjectClass *) feImage_parent_class)->set(object, key, value);
 119             break;
 120     }
 121
 122 }
 123
 124 /**
 125  * Receives update notifications.
 126  */
 127 static void
 128 sp_feImage_update(SPObject *object, SPCtx *ctx, guint flags)
 129 {
 130     if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG |
 131                  SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
 132
 133         /* do something to trigger redisplay, updates? */
 134
 135     }
 136
 137     if (((SPObjectClass *) feImage_parent_class)->update) {
 138         ((SPObjectClass *) feImage_parent_class)->update(object, ctx, flags);
 139     }
 140 }
 141
 142 /**
 143  * Writes its settings to an incoming repr object, if any.
 144  */
 145 static Inkscape::XML::Node *
 146 sp_feImage_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
 147 {
 148     // Inkscape-only object, not copied during an "plain SVG" dump:
 149     if (flags & SP_OBJECT_WRITE_EXT) {
 150         if (repr) {
 151             // is this sane?
 152             repr->mergeFrom(SP_OBJECT_REPR(object), "id");
 153         } else {
 154             repr = SP_OBJECT_REPR(object)->duplicate(NULL); // FIXME
 155         }
 156     }
 157
 158     if (((SPObjectClass *) feImage_parent_class)->write) {
 159         ((SPObjectClass *) feImage_parent_class)->write(object, repr, flags);
 160     }
 161
 162     return repr;
 163 }
 164
 165
 166 /*
 167   Local Variables:
 168   mode:c++
 169   c-file-style:"stroustrup"
 170   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 171   indent-tabs-mode:nil
 172   fill-column:99
 173   End:
 174 */
 175 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :