Code

use touchpath selection when rubberbanding with Alt; do move-selected with Alt only...
[inkscape.git] / src / style.cpp
index 0eb8b0869cbcd28463ff48f1464b1e1ec303aed2..e15c54636adf10b496766cfd5eebe0431e27ff93 100644 (file)
@@ -30,7 +30,6 @@
 #include "attributes.h"
 #include "document.h"
 #include "extract-uri.h"
-#include "marker-status.h"
 #include "uri-references.h"
 #include "sp-paint-server.h"
 #include "streq.h"
@@ -118,7 +117,7 @@ static void sp_style_clear(SPStyle *style);
 static void sp_style_merge_property(SPStyle *style, gint id, gchar const *val);
 
 static void sp_style_merge_ipaint(SPStyle *style, SPIPaint *paint, SPIPaint const *parent);
-static void sp_style_merge_ifilter(SPIFilter *child, SPIFilter const *parent);
+static void sp_style_merge_ifilter(SPStyle *style, SPIFilter const *parent);
 static void sp_style_read_dash(SPStyle *style, gchar const *str);
 
 static SPTextStyle *sp_text_style_new(void);
@@ -138,7 +137,7 @@ static void sp_style_read_itextdecoration(SPITextDecoration *val, gchar const *s
 static void sp_style_read_icolor(SPIPaint *paint, gchar const *str, SPStyle *style, SPDocument *document);
 static void sp_style_read_ipaint(SPIPaint *paint, gchar const *str, SPStyle *style, SPDocument *document);
 static void sp_style_read_ifontsize(SPIFontSize *val, gchar const *str);
-static void sp_style_read_ifilter(SPIFilter *f, gchar const *str, SPDocument *document);
+static void sp_style_read_ifilter(gchar const *str, SPStyle *style, SPDocument *document);
 
 static void sp_style_read_penum(SPIEnum *val, Inkscape::XML::Node *repr, gchar const *key, SPStyleEnum const *dict, bool can_explicitly_inherit);
 static void sp_style_read_plength(SPILength *val, Inkscape::XML::Node *repr, gchar const *key);
@@ -156,10 +155,10 @@ static gint sp_style_write_ilengthornormal(gchar *p, gint const len, gchar const
 static gint sp_style_write_itextdecoration(gchar *p, gint const len, gchar const *const key, SPITextDecoration const *const val, SPITextDecoration const *const base, guint const flags);
 static gint sp_style_write_ifilter(gchar *b, gint len, gchar const *key, SPIFilter const *filter, SPIFilter const *base, guint flags);
 
-static void css2_unescape_unquote(SPIString *val);
-
 static void sp_style_paint_clear(SPStyle *style, SPIPaint *paint);
 
+static void sp_style_filter_clear(SPStyle *style);
+
 #define SPS_READ_IENUM_IF_UNSET(v,s,d,i) if (!(v)->set) {sp_style_read_ienum((v), (s), (d), (i));}
 #define SPS_READ_PENUM_IF_UNSET(v,r,k,d,i) if (!(v)->set) {sp_style_read_penum((v), (r), (k), (d), (i));}
 
@@ -409,6 +408,7 @@ sp_style_new()
 
     style->fill_hreffed = false;
     style->stroke_hreffed = false;
+    style->filter_hreffed = false;
 
     new (&style->release_connection) sigc::connection();
 
@@ -418,6 +418,9 @@ sp_style_new()
     new (&style->stroke_release_connection) sigc::connection();
     new (&style->stroke_modified_connection) sigc::connection();
 
+    new (&style->filter_release_connection) sigc::connection();
+    new (&style->filter_modified_connection) sigc::connection();
+
     return style;
 }
 
@@ -475,6 +478,7 @@ sp_style_unref(SPStyle *style)
         if (style->text) sp_text_style_unref(style->text);
         sp_style_paint_clear(style, &style->fill);
         sp_style_paint_clear(style, &style->stroke);
+        sp_style_filter_clear(style);
         style->fill_release_connection.disconnect();
         style->fill_release_connection.~connection();
         style->fill_modified_connection.disconnect();
@@ -483,6 +487,10 @@ sp_style_unref(SPStyle *style)
         style->stroke_release_connection.~connection();
         style->stroke_modified_connection.disconnect();
         style->stroke_modified_connection.~connection();
+        style->filter_modified_connection.disconnect();
+        style->filter_modified_connection.~connection();
+        style->filter_release_connection.disconnect();
+        style->filter_release_connection.~connection();
         g_free(style->stroke_dash.dash);
         g_free(style);
     }
@@ -506,7 +514,7 @@ sp_style_read(SPStyle *style, SPObject *object, Inkscape::XML::Node *repr)
         style->cloned = true;
     }
 
-    /* 1. Style itself */
+    /* 1. Style attribute */
     gchar const *val = repr->attribute("style");
     if (val != NULL) {
         sp_style_merge_from_style_string(style, val);
@@ -667,8 +675,9 @@ sp_style_read(SPStyle *style, SPObject *object, Inkscape::XML::Node *repr)
         val = repr->attribute("font-family");
         if (val) {
             if (!style->text_private) sp_style_privatize_text(style);
-            sp_style_read_istring(&style->text->font_family, val);
-            css2_unescape_unquote(&style->text->font_family);
+            gchar *val_unquoted = attribute_unquote(val);
+            sp_style_read_istring(&style->text->font_family, val_unquoted);
+            if (val_unquoted) g_free (val_unquoted);
         }
     }
 
@@ -676,13 +685,12 @@ sp_style_read(SPStyle *style, SPObject *object, Inkscape::XML::Node *repr)
     if (!style->filter.set) {
         val = repr->attribute("filter");
         if (val) {
-            sp_style_read_ifilter(&style->filter, val,
-                                  (object) ? SP_OBJECT_DOCUMENT(object) : NULL);
+               sp_style_read_ifilter(val, style, (object) ? SP_OBJECT_DOCUMENT(object) : NULL);
         }
     }
     SPS_READ_PENUM_IF_UNSET(&style->enable_background, repr,
                             "enable-background", enum_enable_background, true);
-            
+
     /* 3. Merge from parent */
     if (object) {
         if (object->parent) {
@@ -768,8 +776,9 @@ sp_style_merge_property(SPStyle *style, gint id, gchar const *val)
         case SP_PROP_FONT_FAMILY:
             if (!style->text_private) sp_style_privatize_text(style);
             if (!style->text->font_family.set) {
-                sp_style_read_istring(&style->text->font_family, val);
-                css2_unescape_unquote(&style->text->font_family);
+                gchar *val_unquoted = attribute_unquote(val);
+                sp_style_read_istring(&style->text->font_family, val_unquoted);
+                if (val_unquoted) g_free (val_unquoted);
             }
             break;
         case SP_PROP_FONT_SIZE:
@@ -917,7 +926,7 @@ sp_style_merge_property(SPStyle *style, gint id, gchar const *val)
             /* Filter */
         case SP_PROP_FILTER:
             if (!style->filter.set && !style->filter.inherit) {
-                sp_style_read_ifilter(&style->filter, val, (style->object) ? SP_OBJECT_DOCUMENT(style->object) : NULL);
+                sp_style_read_ifilter(val, style, (style->object) ? SP_OBJECT_DOCUMENT(style->object) : NULL);
             }
             break;
         case SP_PROP_FLOOD_COLOR:
@@ -980,7 +989,6 @@ sp_style_merge_property(SPStyle *style, gint id, gchar const *val)
         case SP_PROP_MARKER:
             /* TODO:  Call sp_uri_reference_resolve(SPDocument *document, guchar const *uri) */
             /* style->marker[SP_MARKER_LOC] = g_quark_from_string(val); */
-            marker_status("Setting SP_PROP_MARKER");
             if (!style->marker[SP_MARKER_LOC].set) {
                 g_free(style->marker[SP_MARKER_LOC].value);
                 style->marker[SP_MARKER_LOC].value = g_strdup(val);
@@ -991,7 +999,6 @@ sp_style_merge_property(SPStyle *style, gint id, gchar const *val)
 
         case SP_PROP_MARKER_START:
             /* TODO:  Call sp_uri_reference_resolve(SPDocument *document, guchar const *uri) */
-            marker_status("Setting SP_PROP_MARKER_START");
             if (!style->marker[SP_MARKER_LOC_START].set) {
                 g_free(style->marker[SP_MARKER_LOC_START].value);
                 style->marker[SP_MARKER_LOC_START].value = g_strdup(val);
@@ -1001,7 +1008,6 @@ sp_style_merge_property(SPStyle *style, gint id, gchar const *val)
             break;
         case SP_PROP_MARKER_MID:
             /* TODO:  Call sp_uri_reference_resolve(SPDocument *document, guchar const *uri) */
-            marker_status("Setting SP_PROP_MARKER_MID");
             if (!style->marker[SP_MARKER_LOC_MID].set) {
                 g_free(style->marker[SP_MARKER_LOC_MID].value);
                 style->marker[SP_MARKER_LOC_MID].value = g_strdup(val);
@@ -1011,7 +1017,6 @@ sp_style_merge_property(SPStyle *style, gint id, gchar const *val)
             break;
         case SP_PROP_MARKER_END:
             /* TODO:  Call sp_uri_reference_resolve(SPDocument *document, guchar const *uri) */
-            marker_status("Setting SP_PROP_MARKER_END");
             if (!style->marker[SP_MARKER_LOC_END].set) {
                 g_free(style->marker[SP_MARKER_LOC_END].value);
                 style->marker[SP_MARKER_LOC_END].value = g_strdup(val);
@@ -1123,6 +1128,9 @@ sp_style_merge_from_props(SPStyle *const style, CRPropList *const props)
 static void
 sp_style_merge_from_decl_list(SPStyle *const style, CRDeclaration const *const decl_list)
 {
+    // read the decls from end to start, using head recursion, so that latter declarations override
+    // (Ref: http://www.w3.org/TR/REC-CSS2/cascade.html#cascading-order point 4.)
+    // because sp_style_merge_style_from_decl only sets properties that are unset
     if (decl_list->next) {
         sp_style_merge_from_decl_list(style, decl_list->next);
     }
@@ -1455,8 +1463,8 @@ sp_style_merge_from_parent(SPStyle *const style, SPStyle const *const parent)
     }
 
     /* Filter effects */
-    if(style->filter.set && style->filter.inherit) {
-        sp_style_merge_ifilter(&style->filter, &parent->filter);
+    if (style->filter.inherit) {
+        sp_style_merge_ifilter(style, &parent->filter);
     }
 
     if(style->enable_background.inherit) {
@@ -1927,6 +1935,14 @@ sp_style_merge_from_dying_parent(SPStyle *const style, SPStyle const *const pare
             style->enable_background.value = parent->enable_background.value;
         }
 
+        if (!style->filter.set || style->filter.inherit)
+        {
+            // FIXME:
+            // instead of just copying over, we need to _really merge_ the two filters by combining their
+            // filter primitives
+            sp_style_merge_ifilter(style, &parent->filter);
+        }
+
         /** \todo
          * fixme: Check that we correctly handle all properties that don't
          * inherit by default (as shown in
@@ -1984,8 +2000,6 @@ sp_style_merge_from_dying_parent(SPStyle *const style, SPStyle const *const pare
          * represent it as a normal SPILength; though will need to do something about existing
          * users of stroke_dash.offset and stroke_dashoffset_set. */
     }
-
-    /* TODO: deal with filters */
 }
 
 
@@ -2049,6 +2063,36 @@ sp_style_paint_server_modified(SPObject *obj, guint flags, SPStyle *style)
 
 
 
+/**
+ * Disconnects from filter.
+ */
+static void
+sp_style_filter_release(SPObject *obj, SPStyle *style)
+{
+    SPFilter *filter=static_cast<SPFilter *>(obj);
+    if (style->filter.filter == filter)
+    {
+        sp_style_filter_clear(style);
+    }
+}
+
+
+/**
+ * Emit style modified signal on style's object if the filter changed.
+ */
+static void
+sp_style_filter_modified(SPObject *obj, guint flags, SPStyle *style)
+{
+    SPFilter *filter=static_cast<SPFilter *>(obj);
+    if (style->filter.filter == filter)
+    {
+        if (style->object) {
+            style->object->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
+        }
+    }
+}
+
+
 /**
  *
  */
@@ -2113,12 +2157,26 @@ sp_style_merge_ipaint(SPStyle *style, SPIPaint *paint, SPIPaint const *parent)
  * Filter effects do not inherit by default
  */
 static void
-sp_style_merge_ifilter(SPIFilter *child, SPIFilter const *parent)
+sp_style_merge_ifilter(SPStyle *style, SPIFilter const *parent)
 {
-    child->set = parent->set;
-    child->inherit = parent->inherit;
-    child->filter = parent->filter;
-    child->uri = parent->uri;
+    sp_style_filter_clear(style);
+    style->filter.set = parent->set;
+    style->filter.inherit = parent->inherit;
+    style->filter.filter = parent->filter;
+    style->filter.uri = parent->uri;
+    if (style->filter.filter) {
+        if (style->object && !style->cloned) { // href filter for style of non-clones only
+            sp_object_href(SP_OBJECT(style->filter.filter), style);
+            style->filter_hreffed = true;
+        }
+        if (style->object || style->cloned) { // connect to signals for style of real objects or clones (this excludes temp styles)
+            SPObject *filter = style->filter.filter;
+            style->filter_release_connection
+                = filter->connectRelease(sigc::bind<1>(sigc::ptr_fun(&sp_style_filter_release), style));
+            style->filter_modified_connection
+                = filter->connectModified(sigc::bind<2>(sigc::ptr_fun(&sp_style_filter_modified), style));
+        }
+    }
 }
 
 /**
@@ -2178,7 +2236,6 @@ sp_style_write_string(SPStyle const *const style, guint const flags)
     p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linecap", enum_stroke_linecap, &style->stroke_linecap, NULL, flags);
     p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linejoin", enum_stroke_linejoin, &style->stroke_linejoin, NULL, flags);
 
-    marker_status("sp_style_write_string:  Writing markers");
     if (style->marker[SP_MARKER_LOC].set) {
         p += g_snprintf(p, c + BMAX - p, "marker:%s;", style->marker[SP_MARKER_LOC].value);
     } else if (flags == SP_STYLE_FLAG_ALWAYS) {
@@ -2343,7 +2400,6 @@ sp_style_write_difference(SPStyle const *const from, SPStyle const *const to)
     p += sp_style_write_iscale24(p, c + BMAX - p, "stroke-opacity", &from->stroke_opacity, &to->stroke_opacity, SP_STYLE_FLAG_IFDIFF);
 
     /* markers */
-    marker_status("sp_style_write_difference:  Writing markers");
     if (from->marker[SP_MARKER_LOC].value != NULL) {
         p += g_snprintf(p, c + BMAX - p, "marker:%s;",       from->marker[SP_MARKER_LOC].value);
     }
@@ -2397,6 +2453,7 @@ sp_style_clear(SPStyle *style)
 
     sp_style_paint_clear(style, &style->fill);
     sp_style_paint_clear(style, &style->stroke);
+    sp_style_filter_clear(style);
     if (style->stroke_dash.dash) {
         g_free(style->stroke_dash.dash);
     }
@@ -2518,10 +2575,8 @@ sp_style_clear(SPStyle *style)
     }
 
     style->filter.set = FALSE;
-    //Are these really needed?
-    style->filter.inherit = FALSE;
     style->filter.uri = NULL;
-    style->filter.filter = FALSE;
+    style->filter.filter = NULL;
 
     style->enable_background.value = SP_CSS_BACKGROUND_ACCUMULATE;
     style->enable_background.set = false;
@@ -3022,7 +3077,7 @@ sp_style_read_ipaint(SPIPaint *paint, gchar const *str, SPStyle *style, SPDocume
                     delete tmp;
                     tmp = 0;
                 }
-                paint->iccColor = tmp;
+                paint->value.iccColor = tmp;
             }
         }
     }
@@ -3100,8 +3155,9 @@ sp_style_read_ifontsize(SPIFontSize *val, gchar const *str)
  * Set SPIFilter object from string.
  */
 static void
-sp_style_read_ifilter(SPIFilter *f, gchar const *str, SPDocument *document)
+sp_style_read_ifilter(gchar const *str, SPStyle * style, SPDocument *document)
 {
+    SPIFilter *f = &(style->filter);
     /* Try all possible values: inherit, none, uri */
     if (streq(str, "inherit")) {
         f->set = TRUE;
@@ -3124,14 +3180,20 @@ sp_style_read_ifilter(SPIFilter *f, gchar const *str, SPDocument *document)
         f->inherit = FALSE;
         f->filter = NULL;
         if (document) {
-            SPObject *obj;
-            obj = sp_uri_reference_resolve(document, str);
+            SPObject *obj = sp_uri_reference_resolve(document, str);
             if (SP_IS_FILTER(obj)) {
                 f->filter = SP_FILTER(obj);
-                //g_signal_connect(G_OBJECT(f->filter), "release",
-                //                 G_CALLBACK(sp_style_filter_release), style);
-                //g_signal_connect(G_OBJECT(f->filter), "modified",
-                //                 G_CALLBACK(sp_style_filter_modified), style);
+                if (style->object && !style->cloned) {
+                    sp_object_href(obj, style);
+                    style->filter_hreffed = true;
+                }
+                if (style->object || style->cloned) { // connect to signals for style of real objects or clones (this excludes temp styles)
+                    SPObject *filter = style->filter.filter;
+                    style->filter_release_connection
+                        = filter->connectRelease(sigc::bind<1>(sigc::ptr_fun(&sp_style_filter_release), style));
+                    style->filter_modified_connection
+                        = filter->connectModified(sigc::bind<2>(sigc::ptr_fun(&sp_style_filter_modified), style));
+                }
             } else {
                 g_warning("Element '%s' not found or is not a filter", f->uri);
             }
@@ -3293,7 +3355,9 @@ sp_style_write_istring(gchar *p, gint const len, gchar const *const key,
         if (val->inherit) {
             return g_snprintf(p, len, "%s:inherit;", key);
         } else {
-            return g_snprintf(p, len, "%s:%s;", key, val->value);
+            gchar *val_quoted = css2_escape_quote(val->value);
+            return g_snprintf(p, len, "%s:%s;", key, val_quoted);
+            g_free (val_quoted);
         }
     }
     return 0;
@@ -3494,10 +3558,10 @@ sp_paint_differ(SPIPaint const *const a, SPIPaint const *const b)
         return true;
     if (a->type == SP_PAINT_TYPE_COLOR)
         return !(sp_color_is_equal(&a->value.color, &b->value.color)
-                 && ((a->iccColor == b->iccColor)
-                     || (a->iccColor && b->iccColor
-                         && (a->iccColor->colorProfile == b->iccColor->colorProfile)
-                         && (a->iccColor->colors == b->iccColor->colors))));
+                 && ((a->value.iccColor == b->value.iccColor)
+                     || (a->value.iccColor && b->value.iccColor
+                         && (a->value.iccColor->colorProfile == b->value.iccColor->colorProfile)
+                         && (a->value.iccColor->colors == b->value.iccColor->colors))));
     /* todo: Allow for epsilon differences in iccColor->colors, e.g. changes small enough not to show up
      * in the string representation. */
     if (a->type == SP_PAINT_TYPE_PAINTSERVER)
@@ -3528,11 +3592,11 @@ sp_style_write_ipaint(gchar *b, gint const len, gchar const *const key,
                 case SP_PAINT_TYPE_COLOR: {
                     char color_buf[8];
                     sp_svg_write_color(color_buf, sizeof(color_buf), sp_color_get_rgba32_ualpha(&paint->value.color, 0));
-                    if (paint->iccColor) {
+                    if (paint->value.iccColor) {
                         CSSOStringStream css;
-                        css << color_buf << " icc-color(" << paint->iccColor->colorProfile;
-                        for (vector<double>::const_iterator i(paint->iccColor->colors.begin()),
-                                 iEnd(paint->iccColor->colors.end());
+                        css << color_buf << " icc-color(" << paint->value.iccColor->colorProfile;
+                        for (vector<double>::const_iterator i(paint->value.iccColor->colors.begin()),
+                                 iEnd(paint->value.iccColor->colors.end());
                              i != iEnd; ++i) {
                             css << ", " << *i;
                         }
@@ -3660,10 +3724,54 @@ sp_style_paint_clear(SPStyle *style, SPIPaint *paint)
     }
     paint->value.paint.uri = NULL;
     paint->type = SP_PAINT_TYPE_NONE;
-    delete paint->iccColor;
-    paint->iccColor = NULL;
+    delete paint->value.iccColor;
+    paint->value.iccColor = NULL;
 }
 
+
+/**
+ * Clear filter object, and disconnect style from paintserver (if present).
+ */
+static void
+sp_style_filter_clear(SPStyle *style)
+{
+
+    if (style->filter_hreffed) {
+        sp_object_hunref(SP_OBJECT(style->filter.filter), style);
+        style->filter_hreffed = false;
+    }
+    style->filter_release_connection.disconnect();
+    style->filter_modified_connection.disconnect();
+
+    style->filter.filter = NULL;
+}
+
+
+// FIXME: Everything below this line belongs in a different file - css-chemistry?
+
+void
+sp_style_set_property_url (SPObject *item, gchar const *property, SPObject *linked, bool recursive)
+{
+    Inkscape::XML::Node *repr = SP_OBJECT_REPR(item);
+
+    if (repr == NULL) return;
+
+    g_return_if_fail(linked != NULL);
+
+    gchar *val = g_strdup_printf("url(#%s)", SP_OBJECT_ID(linked));
+
+    SPCSSAttr *css = sp_repr_css_attr_new();
+    sp_repr_css_set_property(css, property, val);
+    g_free(val);
+    if (recursive) {
+        sp_repr_css_change_recursive(repr, css, "style");
+    } else {
+        sp_repr_css_change(repr, css, "style");
+    }
+    sp_repr_css_attr_unref(css);
+}
+
+
 /**
  * Clear all style property attributes in object.
  */
@@ -3924,28 +4032,63 @@ sp_css_attr_scale(SPCSSAttr *css, double ex)
 
 
 /**
- * Remove quotes from SPIString object value.
- *
- * \todo FIXME: now used for font family, but perhaps this should apply to
- * ALL strings (check CSS spec), in which case this should be part of
- * read_istring.
+ * Remove quotes and escapes from a string. Returned value must be g_free'd.
+ * Note: in CSS (in style= and in stylesheets), unquoting and unescaping is done
+ * by libcroco, our CSS parser, though it adds a new pair of "" quotes for the strings
+ * it parsed for us. So this function is only used to remove those quotes and for
+ * presentation attributes, without any unescaping. (XML unescaping
+ * (&amp; etc) is done by XML parser.)
  */
-static void
-css2_unescape_unquote(SPIString *val)
+gchar *
+attribute_unquote(gchar const *val)
 {
-    if (val->set && val->value && strlen(val->value) >= 2) {
+    if (val) {
+        if (*val == '\'' || *val == '"') {
+            int l = strlen(val);
+            if (l >= 2) {
+                if ( ( val[0] == '"' && val[l - 1] == '"' )  ||
+                     ( val[0] == '\'' && val[l - 1] == '\'' )  ) {
+                    return (g_strndup (val+1, l-2));
+                }
+            }
+        }
+    }
 
-        /// \todo unescape all \-escaped chars
+    return (val? g_strdup (val) : NULL);
+}
 
-        int l = strlen(val->value);
-        if ( ( val->value[0] == '"' && val->value[l - 1] == '"' )  ||
-             ( val->value[0] == '\'' && val->value[l - 1] == '\'' )  ) {
-            memcpy(val->value, val->value + 1, l - 2);
-            val->value[l - 2] = '\0';
+/**
+ * Quote and/or escape string for writing to CSS (style=). Returned value must be g_free'd.
+ */
+gchar *
+css2_escape_quote(gchar const *val) {
+
+    Glib::ustring t;
+    bool quote = false;
+
+    for (gchar const *i = val; *i; i++) {
+        if (g_ascii_isalnum(*i) || *i=='-' || *i=='_') {
+            t.push_back(*i);
+        } else if (*i=='\'') {
+            t.push_back('\\');
+            t.push_back(*i);
+            quote = true;
+        } else {
+            t.push_back(*i);
+            quote = true;
+        }
+        if (i == val && !g_ascii_isalpha(*i)) {
+            quote = true;
         }
     }
-}
 
+    if (quote) { // we use the ' quotes so the result can go to the XML attribute
+        t.insert(t.begin(), '\'');
+        t.push_back('\'');
+    }
+
+    return (t.empty() ? NULL : g_strdup (t.c_str()));
+}
 
 /*
   Local Variables: