Avoid the “using std::*;” or “using namespace std;” constructs.

This makes the code a lot less readable and greppable for no reason.

31 files changed, 116 insertions, 152 deletions

diff --git a/src/color.cpp b/src/color.cpp
index 6baf6470c..c3353ef1c 100644
--- a/src/color.cpp
+++ b/src/color.cpp
@@ -15,6 +15,7 @@
 
 #include <cmath>
 #include <cstdio>
+#include <vector>
 
 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
@@ -29,7 +30,6 @@
 #define return_val_if_fail(x, val) if (!(x)) { printf("assertion failed: " #x); return val; }
 
 using Inkscape::CSSOStringStream;
-using std::vector;
 
 static bool profileMatches( SVGICCColor const* first, SVGICCColor const* second );
 
@@ -205,7 +205,7 @@ std::string SPColor::toString() const
             css << " ";
         }
         css << "icc-color(" << icc->colorProfile;
-        for (vector<double>::const_iterator i(icc->colors.begin()),
+        for (std::vector<double>::const_iterator i(icc->colors.begin()),
                  iEnd(icc->colors.end());
              i != iEnd; ++i) {
             css << ", " << *i;
diff --git a/src/device-manager.cpp b/src/device-manager.cpp
index 165ad6c4e..a9d9ef818 100644
--- a/src/device-manager.cpp
+++ b/src/device-manager.cpp
@@ -11,6 +11,7 @@
 #include "device-manager.h"
 
 #include <set>
+#include <vector>
 
 #include "preferences.h"
 
diff --git a/src/file-update.cpp b/src/file-update.cpp
index 22dd022bc..f35107e2d 100644
--- a/src/file-update.cpp
+++ b/src/file-update.cpp
@@ -19,6 +19,7 @@
  */
 #include <clocale>
 #include <string>
+#include <vector>
 
 #include <gtkmm.h>
 
@@ -64,7 +65,6 @@
 
  
 using Inkscape::DocumentUndo;
-using namespace std;
 
 int sp_file_convert_dpi_method_commandline = -1; // Unset
 
@@ -85,9 +85,9 @@ void fix_blank_line(SPObject *o)
 
     SPIFontSize fontsize = o->style->font_size;
     SPILengthOrNormal lineheight = o->style->line_height;
-    vector<SPObject *> cl = o->childList(false);
+    std::vector<SPObject *> cl = o->childList(false);
     bool beginning = true;
-    for (vector<SPObject *>::const_iterator ci = cl.begin(); ci != cl.end(); ++ci) {
+    for (std::vector<SPObject *>::const_iterator ci = cl.begin(); ci != cl.end(); ++ci) {
         SPObject *i = *ci;
         if ((SP_IS_TSPAN(i) && is_line(i)) || SP_IS_FLOWPARA(i) || SP_IS_FLOWDIV(i)) {
             if (sp_text_get_length((SPItem *)i) <= 1) { // empty line
@@ -116,8 +116,8 @@ void fix_line_spacing(SPObject *o)
 {
     SPILengthOrNormal lineheight = o->style->line_height;
     bool inner = false;
-    vector<SPObject *> cl = o->childList(false);
-    for (vector<SPObject *>::const_iterator ci = cl.begin(); ci != cl.end(); ++ci) {
+    std::vector<SPObject *> cl = o->childList(false);
+    for (std::vector<SPObject *>::const_iterator ci = cl.begin(); ci != cl.end(); ++ci) {
         SPObject *i = *ci;
         if ((SP_IS_TSPAN(i) && is_line(i)) || SP_IS_FLOWPARA(i) || SP_IS_FLOWDIV(i)) {
             // if no line-height attribute, set it
@@ -138,10 +138,10 @@ void fix_line_spacing(SPObject *o)
 
 void fix_font_name(SPObject *o)
 {
-    vector<SPObject *> cl = o->childList(false);
-    for (vector<SPObject *>::const_iterator ci = cl.begin(); ci != cl.end(); ++ci)
+    std::vector<SPObject *> cl = o->childList(false);
+    for (std::vector<SPObject *>::const_iterator ci = cl.begin(); ci != cl.end(); ++ci)
         fix_font_name(*ci);
-    string prev = o->style->font_family.value ? o->style->font_family.value : o->style->font_family.value_default;
+    std::string prev = o->style->font_family.value ? o->style->font_family.value : o->style->font_family.value_default;
     if (prev == "Sans")
         o->style->font_family.read("sans-serif");
     else if (prev == "Serif")
@@ -157,8 +157,8 @@ void fix_font_size(SPObject *o)
     if (!fontsize.set)
         return;
     bool inner = false;
-    vector<SPObject *> cl = o->childList(false);
-    for (vector<SPObject *>::const_iterator ci = cl.begin(); ci != cl.end(); ++ci) {
+    std::vector<SPObject *> cl = o->childList(false);
+    for (std::vector<SPObject *>::const_iterator ci = cl.begin(); ci != cl.end(); ++ci) {
         SPObject *i = *ci;
         fix_font_size(i);
         if ((SP_IS_TSPAN(i) && is_line(i)) || SP_IS_FLOWPARA(i) || SP_IS_FLOWDIV(i)) {
@@ -181,8 +181,8 @@ void sp_file_text_run_recursive(void (*f)(SPObject *), SPObject *o)
     if (SP_IS_TEXT(o) || SP_IS_FLOWTEXT(o))
         f(o);
     else {
-        vector<SPObject *> cl = o->childList(false);
-        for (vector<SPObject *>::const_iterator ci = cl.begin(); ci != cl.end(); ++ci)
+        std::vector<SPObject *> cl = o->childList(false);
+        for (std::vector<SPObject *>::const_iterator ci = cl.begin(); ci != cl.end(); ++ci)
             sp_file_text_run_recursive(f, *ci);
     }
 }
diff --git a/src/graphlayout.cpp b/src/graphlayout.cpp
index 6173854d9..4c244489c 100644
--- a/src/graphlayout.cpp
+++ b/src/graphlayout.cpp
@@ -16,7 +16,10 @@
 #include <algorithm>
 #include <cstring>
 #include <iostream>
+#include <list>
 #include <map>
+#include <string>
+#include <valarray>
 #include <vector>
 
 #include <2geom/transforms.h>
@@ -36,7 +39,6 @@
 #include "object/sp-path.h"
 #include "style.h"
 
-using namespace std;
 using namespace cola;
 using namespace vpsc;
 
@@ -52,19 +54,19 @@ bool isConnector(SPItem const * const item) {
 }
 
 struct CheckProgress: TestConvergence {
-    CheckProgress(double d, unsigned i, list<SPItem*> & selected, Rectangles & rs,
-            map<string, unsigned> & nodelookup)
+    CheckProgress(double d, unsigned i, std::list<SPItem*> & selected, Rectangles & rs,
+            std::map<std::string, unsigned> & nodelookup)
         : TestConvergence(d, i)
         , selected(selected)
         , rs(rs)
         , nodelookup(nodelookup)
     {}
-    bool operator()(const double new_stress, valarray<double> & X, valarray<double> & Y) override {
+    bool operator()(const double new_stress, std::valarray<double> & X, std::valarray<double> & Y) override {
         /* This is where, if we wanted to animate the layout, we would need to update
          * the positions of all objects and redraw the canvas and maybe sleep a bit
          cout << "stress="<<new_stress<<endl;
         cout << "x[0]="<<rs[0]->getMinX()<<endl;
-        for (list<SPItem *>::iterator it(selected.begin());
+        for (std::list<SPItem *>::iterator it(selected.begin());
             it != selected.end();
             ++it)
         {
@@ -80,16 +82,16 @@ struct CheckProgress: TestConvergence {
         */
         return TestConvergence::operator()(new_stress, X, Y);
     }
-    list<SPItem*> & selected;
+    std::list<SPItem*> & selected;
     Rectangles & rs;
-    map<string, unsigned> & nodelookup;
+    std::map<std::string, unsigned> & nodelookup;
 };
 
 /**
  * Scans the items list and places those items that are
  * not connectors in filtered
  */
-void filterConnectors(std::vector<SPItem*> const & items, list<SPItem*> & filtered) {
+void filterConnectors(std::vector<SPItem*> const & items, std::list<SPItem*> & filtered) {
     for (SPItem * item: items) {
         if (!isConnector(item)) {
             filtered.push_back(item);
@@ -105,7 +107,7 @@ void filterConnectors(std::vector<SPItem*> const & items, list<SPItem*> & filter
 void graphlayout(std::vector<SPItem*> const & items) {
     if (items.empty()) return;
 
-    list<SPItem*> selected;
+    std::list<SPItem*> selected;
     filterConnectors(items, selected);
 
     if (selected.size() < 2) return;
@@ -116,9 +118,9 @@ void graphlayout(std::vector<SPItem*> const & items) {
     double spacing = 0;
     if (desktop) spacing = desktop->namedview->connector_spacing + 0.1;
 
-    map<string, unsigned> nodelookup;
+    std::map<std::string, unsigned> nodelookup;
     Rectangles rs;
-    vector<Edge> es;
+    std::vector<Edge> es;
     for (SPItem * item: selected) {
         Geom::OptRect const item_box = item->desktopVisualBounds();
         if (item_box) {
@@ -145,11 +147,11 @@ void graphlayout(std::vector<SPItem*> const & items) {
     bool avoid_overlaps = prefs->getBool("/tools/connector/avoidoverlaplayout");
 
     for (SPItem * item: selected) {
-        map<string, unsigned>::iterator i_iter=nodelookup.find(item->getId());
+        std::map<std::string, unsigned>::iterator i_iter=nodelookup.find(item->getId());
         if (i_iter == nodelookup.end()) continue;
         unsigned u = i_iter->second;
-        vector<SPItem*> nlist = item->avoidRef->getAttachedConnectors(Avoid::runningFrom);
-        list<SPItem*> connectors;
+        std::vector<SPItem*> nlist = item->avoidRef->getAttachedConnectors(Avoid::runningFrom);
+        std::list<SPItem*> connectors;
 
         connectors.insert(connectors.end(), nlist.begin(), nlist.end());
 
@@ -172,7 +174,7 @@ void graphlayout(std::vector<SPItem*> const & items) {
 
             // If iv not in nodelookup we again treat the connector
             // as disconnected and continue
-            map<string, unsigned>::iterator v_pair = nodelookup.find(iv->getId());
+            std::map<std::string, unsigned>::iterator v_pair = nodelookup.find(iv->getId());
             if (v_pair != nodelookup.end()) {
                 unsigned v = v_pair->second;
                 //cout << "Edge: (" << u <<","<<v<<")"<<endl;
@@ -187,7 +189,7 @@ void graphlayout(std::vector<SPItem*> const & items) {
         }
     }
     EdgeLengths elengths(es.size(), 1);
-    vector<Component*> cs;
+    std::vector<Component*> cs;
     connectedComponents(rs, es, cs);
     for (Component * c: cs) {
         if (c->edges.size() < 2) continue;
@@ -201,7 +203,7 @@ void graphlayout(std::vector<SPItem*> const & items) {
 
     for (SPItem * item: selected) {
         if (!isConnector(item)) {
-            map<string, unsigned>::iterator i = nodelookup.find(item->getId());
+            std::map<std::string, unsigned>::iterator i = nodelookup.find(item->getId());
             if (i != nodelookup.end()) {
                 Rectangle * r = rs[i->second];
                 Geom::OptRect item_box = item->desktopVisualBounds();
diff --git a/src/layer-fns.cpp b/src/layer-fns.cpp
index dfb003727..81c722ddc 100644
--- a/src/layer-fns.cpp
+++ b/src/layer-fns.cpp
@@ -107,8 +107,6 @@ static SPObject *last_elder_layer(SPObject *root, SPObject *layer) {
  *  @returns NULL if there are no further layers under \a root
  */
 SPObject *next_layer(SPObject *root, SPObject *layer) {
-    using std::find_if;
-
     g_return_val_if_fail(layer != nullptr, NULL);
     SPObject *result = nullptr;
 
diff --git a/src/live_effects/lpe-bendpath.cpp b/src/live_effects/lpe-bendpath.cpp
index 6f4dcf6c3..5214f0e2c 100644
--- a/src/live_effects/lpe-bendpath.cpp
+++ b/src/live_effects/lpe-bendpath.cpp
@@ -6,6 +6,7 @@
  * Released under GNU GPL v2+, read the file 'COPYING' for more information.
  */
 
+#include <vector>
 #include "live_effects/lpe-bendpath.h"
 #include "knot-holder-entity.h"
 #include "knotholder.h"
@@ -13,9 +14,6 @@
 // TODO due to internal breakage in glibmm headers, this must be last:
 #include <glibmm/i18n.h>
 
-using std::vector;
-
-
 /* Theory in e-mail from J.F. Barraud
 Let B be the skeleton path, and P the pattern (the path to be deformed).
 
diff --git a/src/live_effects/lpe-envelope.cpp b/src/live_effects/lpe-envelope.cpp
index 968714cf7..325bf3935 100644
--- a/src/live_effects/lpe-envelope.cpp
+++ b/src/live_effects/lpe-envelope.cpp
@@ -10,8 +10,6 @@
 // TODO due to internal breakage in glibmm headers, this must be last:
 #include <glibmm/i18n.h>
 
-using std::vector;
-
 namespace Inkscape {
 namespace LivePathEffect {
 
diff --git a/src/live_effects/lpe-gears.cpp b/src/live_effects/lpe-gears.cpp
index f1e287704..a7bbfd567 100644
--- a/src/live_effects/lpe-gears.cpp
+++ b/src/live_effects/lpe-gears.cpp
@@ -12,7 +12,6 @@
 // TODO due to internal breakage in glibmm headers, this must be last:
 #include <glibmm/i18n.h>
 
-using std::vector;
 using namespace Geom;
 
 class Gear {
diff --git a/src/live_effects/lpe-patternalongpath.cpp b/src/live_effects/lpe-patternalongpath.cpp
index 081c87990..c667bdc49 100644
--- a/src/live_effects/lpe-patternalongpath.cpp
+++ b/src/live_effects/lpe-patternalongpath.cpp
@@ -7,6 +7,7 @@
 
 #include <cmath>
 #include <algorithm>
+#include <vector>
 
 #include <2geom/bezier-to-sbasis.h>
 
@@ -20,8 +21,6 @@
 // TODO due to internal breakage in glibmm headers, this must be last:
 #include <glibmm/i18n.h>
 
-using std::vector;
-
 
 /* Theory in e-mail from J.F. Barraud
 Let B be the skeleton path, and P the pattern (the path to be deformed).
diff --git a/src/live_effects/lpe-test-doEffect-stack.cpp b/src/live_effects/lpe-test-doEffect-stack.cpp
index ffe507e34..55d707af2 100644
--- a/src/live_effects/lpe-test-doEffect-stack.cpp
+++ b/src/live_effects/lpe-test-doEffect-stack.cpp
@@ -10,8 +10,6 @@
 // TODO due to internal breakage in glibmm headers, this must be last:
 #include <glibmm/i18n.h>
 
-using std::memcpy;
-
 namespace Inkscape {
 namespace LivePathEffect {
 
diff --git a/src/live_effects/lpe-vonkoch.cpp b/src/live_effects/lpe-vonkoch.cpp
index aa0f46ecc..8936bd83a 100644
--- a/src/live_effects/lpe-vonkoch.cpp
+++ b/src/live_effects/lpe-vonkoch.cpp
@@ -5,11 +5,11 @@
  * Released under GNU GPL v2+, read the file 'COPYING' for more information.
  */
 
+#include <vector>
 #include "live_effects/lpe-vonkoch.h"
 // TODO due to internal breakage in glibmm headers, this must be last:
 #include <glibmm/i18n.h>
 
-//using std::vector;
 namespace Inkscape {
 namespace LivePathEffect {
 
diff --git a/src/object/sp-filter.cpp b/src/object/sp-filter.cpp
index 24f849cc6..da7e8142d 100644
--- a/src/object/sp-filter.cpp
+++ b/src/object/sp-filter.cpp
@@ -19,6 +19,7 @@
 #include <map>
 #include <cstring>
 #include <utility>
+#include <vector>
 
 #include <glibmm.h>
 
@@ -31,9 +32,6 @@
 #include "uri.h"
 #include "xml/repr.h"
 
-using std::map;
-using std::pair;
-
 static void filter_ref_changed(SPObject *old_ref, SPObject *ref, SPFilter *filter);
 static void filter_ref_modified(SPObject *href, guint flags, SPFilter *filter);
 
@@ -101,7 +99,7 @@ void SPFilter::release() {
         this->href = nullptr;
     }
 
-    for (map<gchar *, int, ltstr>::const_iterator i = this->_image_name->begin() ; i != this->_image_name->end() ; ++i) {
+    for (std::map<gchar *, int, ltstr>::const_iterator i = this->_image_name->begin() ; i != this->_image_name->end() ; ++i) {
         g_free(i->first);
     }
 
@@ -421,7 +419,7 @@ int SPFilter::primitive_count() const {
 }
 
 int SPFilter::get_image_name(gchar const *name) const {
-    map<gchar *, int, ltstr>::iterator result = this->_image_name->find(const_cast<gchar*>(name));
+    std::map<gchar *, int, ltstr>::iterator result = this->_image_name->find(const_cast<gchar*>(name));
     if (result == this->_image_name->end()) return -1;
     else return (*result).second;
 }
@@ -430,8 +428,8 @@ int SPFilter::set_image_name(gchar const *name) {
     int value = this->_image_number_next;
     this->_image_number_next++;
     gchar *name_copy = strdup(name);
-    pair<gchar*,int> new_pair(name_copy, value);
-    const pair<map<gchar*,int,ltstr>::iterator,bool> ret = this->_image_name->insert(new_pair);
+    std::pair<gchar*,int> new_pair(name_copy, value);
+    const std::pair<std::map<gchar*,int,ltstr>::iterator,bool> ret = this->_image_name->insert(new_pair);
     if (ret.second == false) {
         // The element is not inserted (because an element with the same key was already in the map) 
         // Therefore, free the memory allocated for the new entry:
@@ -467,7 +465,7 @@ gchar const *SPFilter::name_for_image(int const image) const {
             return nullptr;
             break;
         default:
-            for (map<gchar *, int, ltstr>::const_iterator i
+            for (std::map<gchar *, int, ltstr>::const_iterator i
                      = this->_image_name->begin() ;
                  i != this->_image_name->end() ; ++i) {
                 if (i->second == image) {
diff --git a/src/object/sp-guide.cpp b/src/object/sp-guide.cpp
index bbb66aa4a..8dbc68f09 100644
--- a/src/object/sp-guide.cpp
+++ b/src/object/sp-guide.cpp
@@ -19,6 +19,7 @@
 #include <algorithm>
 #include <cstring>
 #include <string>
+#include <vector>
 
 #include "display/sp-canvas.h"
 #include "display/guideline.h"
@@ -40,7 +41,6 @@
 #include "verbs.h"
 
 using Inkscape::DocumentUndo;
-using std::vector;
 
 SPGuide::SPGuide()
     : SPObject()
@@ -406,7 +406,7 @@ void SPGuide::moveto(Geom::Point const point_on_line, bool const commit)
     }
 
 /*  DISABLED CODE BECAUSE  SPGuideAttachment  IS NOT USE AT THE MOMENT (johan)
-    for (vector<SPGuideAttachment>::const_iterator i(attached_items.begin()),
+    for (std::vector<SPGuideAttachment>::const_iterator i(attached_items.begin()),
              iEnd(attached_items.end());
          i != iEnd; ++i)
     {
@@ -445,7 +445,7 @@ void SPGuide::set_normal(Geom::Point const normal_to_line, bool const commit)
     }
 
 /*  DISABLED CODE BECAUSE  SPGuideAttachment  IS NOT USE AT THE MOMENT (johan)
-    for (vector<SPGuideAttachment>::const_iterator i(attached_items.begin()),
+    for (std::vector<SPGuideAttachment>::const_iterator i(attached_items.begin()),
              iEnd(attached_items.end());
          i != iEnd; ++i)
     {
@@ -550,7 +550,7 @@ void sp_guide_remove(SPGuide *guide)
 {
     g_assert(SP_IS_GUIDE(guide));
 
-    for (vector<SPGuideAttachment>::const_iterator i(guide->attached_items.begin()),
+    for (std::vector<SPGuideAttachment>::const_iterator i(guide->attached_items.begin()),
              iEnd(guide->attached_items.end());
          i != iEnd; ++i)
     {
diff --git a/src/object/sp-item-rm-unsatisfied-cns.cpp b/src/object/sp-item-rm-unsatisfied-cns.cpp
index 88fe6ca56..3b476e20d 100644
--- a/src/object/sp-item-rm-unsatisfied-cns.cpp
+++ b/src/object/sp-item-rm-unsatisfied-cns.cpp
@@ -10,13 +10,12 @@
 
 #include <algorithm>
 #include <2geom/coord.h>
+#include <vector>
 
 #include "remove-last.h"
 #include "sp-guide.h"
 #include "sp-item-rm-unsatisfied-cns.h"
 
-using std::vector;
-
 void sp_item_rm_unsatisfied_cns(SPItem &item)
 {
     if (item.constraints.empty()) {
diff --git a/src/object/sp-item-update-cns.cpp b/src/object/sp-item-update-cns.cpp
index f70d91b9f..c16627eab 100644
--- a/src/object/sp-item-update-cns.cpp
+++ b/src/object/sp-item-update-cns.cpp
@@ -8,31 +8,28 @@
  * Released under GNU GPL v2+, read the file 'COPYING' for more information.
  */
 
-
+#include <vector>
 #include "satisfied-guide-cns.h"
 
 #include "sp-item-update-cns.h"
 #include "sp-guide.h"
 
-using std::find;
-using std::vector;
-
 void sp_item_update_cns(SPItem &item, SPDesktop const &desktop)
 {
     std::vector<Inkscape::SnapCandidatePoint> snappoints;
     item.getSnappoints(snappoints, nullptr);
     /* TODO: Implement the ordering. */
-    vector<SPGuideConstraint> found_cns;
+    std::vector<SPGuideConstraint> found_cns;
     satisfied_guide_cns(desktop, snappoints, found_cns);
     /* effic: It might be nice to avoid an n^2 algorithm, but in practice n will be
        small enough that it's still usually more efficient. */
 
-    for (vector<SPGuideConstraint>::const_iterator fi(found_cns.begin()),
+    for (std::vector<SPGuideConstraint>::const_iterator fi(found_cns.begin()),
              fiEnd(found_cns.end());
          fi != fiEnd; ++fi)
     {
         SPGuideConstraint const &cn = *fi;
-        if ( find(item.constraints.begin(),
+        if ( std::find(item.constraints.begin(),
                   item.constraints.end(),
                   cn)
              == item.constraints.end() )
diff --git a/src/object/sp-object.cpp b/src/object/sp-object.cpp
index 5222fc5f2..714518f08 100644
--- a/src/object/sp-object.cpp
+++ b/src/object/sp-object.cpp
@@ -18,6 +18,7 @@
 
 #include <cstring>
 #include <string>
+#include <vector>
 
 #include <boost/range/adaptor/transformed.hpp>
 
@@ -44,12 +45,6 @@
 #include "util/format.h"
 #include "util/longest-common-suffix.h"
 
-using std::memcpy;
-using std::strchr;
-using std::strcmp;
-using std::strlen;
-using std::strstr;
-
 #define noSP_OBJECT_DEBUG_CASCADE
 
 #define noSP_OBJECT_DEBUG
@@ -736,7 +731,7 @@ void SPObject::invoke_build(SPDocument *document, Inkscape::XML::Node *repr, uns
                 }
 
                 /* Redefine ID, if required */
-                if ((id == nullptr) || (strcmp(id, this->getId()) != 0)) {
+                if ((id == nullptr) || (std::strcmp(id, this->getId()) != 0)) {
                     this->repr->setAttribute("id", this->getId());
                 }
             } else if (id) {
@@ -944,17 +939,17 @@ void SPObject::set(SPAttributeEnum key, gchar const* value) {
             object->_default_label = nullptr;
             break;
         case SP_ATTR_INKSCAPE_COLLECT:
-            if ( value && !strcmp(value, "always") ) {
+            if ( value && !std::strcmp(value, "always") ) {
                 object->setCollectionPolicy(SPObject::ALWAYS_COLLECT);
             } else {
                 object->setCollectionPolicy(SPObject::COLLECT_WITH_PARENT);
             }
             break;
         case SP_ATTR_XML_SPACE:
-            if (value && !strcmp(value, "preserve")) {
+            if (value && !std::strcmp(value, "preserve")) {
                 object->xml_space.value = SP_XML_SPACE_PRESERVE;
                 object->xml_space.set = TRUE;
-            } else if (value && !strcmp(value, "default")) {
+            } else if (value && !std::strcmp(value, "default")) {
                 object->xml_space.value = SP_XML_SPACE_DEFAULT;
                 object->xml_space.set = TRUE;
             } else if (object->parent) {
@@ -1410,7 +1405,7 @@ sp_object_get_unique_id(SPObject    *object,
     gchar const *name = object->getRepr()->name();
     g_assert(name != nullptr);
 
-    gchar const *local = strchr(name, ':');
+    gchar const *local = std::strchr(name, ':');
     if (local) {
         name = local + 1;
     }
@@ -1421,10 +1416,10 @@ sp_object_get_unique_id(SPObject    *object,
         }
     }
 
-    size_t const name_len = strlen(name);
+    size_t const name_len = std::strlen(name);
     size_t const buflen = name_len + (sizeof(count) * 10 / 4) + 1;
     gchar *const buf = (gchar *) g_malloc(buflen);
-    memcpy(buf, name, name_len);
+    std::memcpy(buf, name, name_len);
     gchar *const count_buf = buf + name_len;
     size_t const count_buflen = buflen - name_len;
     do {
@@ -1567,7 +1562,7 @@ SPObject* SPObject::findFirstChild(gchar const *tagname) const
     for (auto& child: const_cast<SPObject*>(this)->children)
     {
         if (child.repr->type() == Inkscape::XML::ELEMENT_NODE &&
-            !strcmp(child.repr->name(), tagname)) {
+            !std::strcmp(child.repr->name(), tagname)) {
             return &child;
         }
     }
diff --git a/src/snap.cpp b/src/snap.cpp
index 55c67b0ff..210a1989e 100644
--- a/src/snap.cpp
+++ b/src/snap.cpp
@@ -17,6 +17,7 @@
  */
 
 #include <utility>
+#include <vector>
 
 #include <2geom/transforms.h>
 
@@ -36,7 +37,6 @@
 
 #include "ui/tools/tool-base.h"
 
-using std::vector;
 using Inkscape::Util::round_to_upper_multiple_plus;
 using Inkscape::Util::round_to_lower_multiple_plus;
 
diff --git a/src/sp-item-notify-moveto.cpp b/src/sp-item-notify-moveto.cpp
index 1da630004..57e44f45a 100644
--- a/src/sp-item-notify-moveto.cpp
+++ b/src/sp-item-notify-moveto.cpp
@@ -12,6 +12,7 @@
  */
 
 #include <2geom/transforms.h>
+#include <vector>
 
 #include "sp-item-notify-moveto.h"
 
@@ -19,8 +20,6 @@
 #include "object/sp-item.h"
 #include "object/sp-item-rm-unsatisfied-cns.h"
 
-using std::vector;
-
 #define return_if_fail(test) if (!(test)) { printf("WARNING: assertion '%s' failed", #test); return; }
 
 /**
diff --git a/src/splivarot.cpp b/src/splivarot.cpp
index 38b5c7f89..38d4c65ff 100644
--- a/src/splivarot.cpp
+++ b/src/splivarot.cpp
@@ -466,9 +466,8 @@ BoolOpErrors Inkscape::ObjectSet::pathBoolOp(bool_op bop, const bool skip_undo,
     // reverse if needed
     // note that the selection list keeps its order
     if ( reverseOrderForOp ) {
-        using std::swap;
-        swap(originaux[0], originaux[1]);
-        swap(origWind[0], origWind[1]);
+        std::swap(originaux[0], originaux[1]);
+        std::swap(origWind[0], origWind[1]);
     }
 
     // and work
diff --git a/src/style.cpp b/src/style.cpp
index 305952248..c87d84a9f 100644
--- a/src/style.cpp
+++ b/src/style.cpp
@@ -26,6 +26,7 @@
 #include <string>
 #include <algorithm>
 #include <unordered_map>
+#include <vector>
 
 #include <glibmm/regex.h>
 
@@ -51,7 +52,6 @@
 #include "xml/simple-document.h"
 
 using Inkscape::CSSOStringStream;
-using std::vector;
 
 #define BMAX 8192
 
diff --git a/src/svg/strip-trailing-zeros.cpp b/src/svg/strip-trailing-zeros.cpp
index f6ffaf8cc..8abe4fa3d 100644
--- a/src/svg/strip-trailing-zeros.cpp
+++ b/src/svg/strip-trailing-zeros.cpp
@@ -14,28 +14,26 @@
 
 #include "svg/strip-trailing-zeros.h"
 
-using std::string;
-
-string
-strip_trailing_zeros(string str)
+std::string
+strip_trailing_zeros(std::string str)
 {
-    string::size_type p_ix = str.find('.');
-    if (p_ix != string::npos) {
-        string::size_type e_ix = str.find('e', p_ix);
+    std::string::size_type p_ix = str.find('.');
+    if (p_ix != std::string::npos) {
+        std::string::size_type e_ix = str.find('e', p_ix);
         /* N.B. In some contexts (e.g. CSS) it is an error for a number to contain `e'.  fixme:
          * Default to avoiding `e', e.g. using sprintf(str, "%17f", d).  Add a new function that
          * allows use of `e' and use that function only where the spec allows it.
          */
-        string::size_type nz_ix = str.find_last_not_of('0', (e_ix == string::npos
+        std::string::size_type nz_ix = str.find_last_not_of('0', (e_ix == std::string::npos
                                                                   ? e_ix
                                                                   : e_ix - 1));
-        if (nz_ix == string::npos || nz_ix < p_ix || nz_ix >= e_ix) {
+        if (nz_ix == std::string::npos || nz_ix < p_ix || nz_ix >= e_ix) {
             g_error("have `.' but couldn't find non-0");
         } else {
             str.erase(str.begin() + (nz_ix == p_ix
                                      ? p_ix
                                      : nz_ix + 1),
-                      (e_ix == string::npos
+                      (e_ix == std::string::npos
                        ? str.end()
                        : str.begin() + e_ix));
         }
diff --git a/src/svg/svg-color.cpp b/src/svg/svg-color.cpp
index be919ca54..1a0c3d8b8 100644
--- a/src/svg/svg-color.cpp
+++ b/src/svg/svg-color.cpp
@@ -35,6 +35,7 @@
 #include "color.h"
 #if defined(HAVE_LIBLCMS1) || defined(HAVE_LIBLCMS2)
 
+#include <vector>
 #include "object/color-profile.h"
 
 #include "document.h"
@@ -44,13 +45,9 @@
 
 #include "cms-system.h"
 
-using std::sprintf;
-using std::string;
-using Inkscape::CMSSystem;
-
 struct SPSVGColor {
     unsigned long rgb;
-    const string name;
+    const std::string name;
 };
 
 /*
@@ -207,7 +204,7 @@ static SPSVGColor const sp_svg_color_named[] = {
     { 0x9ACD32, "yellowgreen" }
 };
 
-static std::map<string, unsigned long> sp_svg_create_color_hash();
+static std::map<std::string, unsigned long> sp_svg_create_color_hash();
 
 guint32 sp_svg_read_color(gchar const *str, guint32 const dfl)
 {
@@ -216,7 +213,7 @@ guint32 sp_svg_read_color(gchar const *str, guint32 const dfl)
 
 static guint32 internal_sp_svg_read_color(gchar const *str, gchar const **end_ptr, guint32 def)
 {
-    static std::map<string, unsigned long> colors;
+    static std::map<std::string, unsigned long> colors;
     guint32 val = 0;
 
     if (str == nullptr) return def;
@@ -382,8 +379,8 @@ static guint32 internal_sp_svg_read_color(gchar const *str, gchar const **end_pt
         }
         c[31] = '\0';
 
-        if (colors.count(string(c))) {
-            val = colors[string(c)];
+        if (colors.count(std::string(c))) {
+            val = colors[std::string(c)];
         }
         else {
             return def;
@@ -462,12 +459,12 @@ static void rgb24_to_css(char *const buf, unsigned const rgb24)
         default: {
             if ((rgb24 & 0xf0f0f) * 0x11 == rgb24) {
                 /* Can use the shorter three-digit form #rgb instead of #rrggbb. */
-                sprintf(buf, "#%x%x%x",
+                std::sprintf(buf, "#%x%x%x",
                         (rgb24 >> 16) & 0xf,
                         (rgb24 >> 8) & 0xf,
                         rgb24 & 0xf);
             } else {
-                sprintf(buf, "#%06x", rgb24);
+                std::sprintf(buf, "#%06x", rgb24);
             }
             break;
         }
@@ -500,10 +497,10 @@ void sp_svg_write_color(gchar *buf, unsigned const buflen, guint32 const rgba32)
     }
 }
 
-static std::map<string, unsigned long>
+static std::map<std::string, unsigned long>
 sp_svg_create_color_hash()
 {
-    std::map<string, unsigned long> colors;
+    std::map<std::string, unsigned long> colors;
 
     for (const auto & i : sp_svg_color_named) {
         colors[i.name] = i.rgb;
@@ -524,7 +521,7 @@ g_message("profile name: %s", icc->colorProfile.c_str());
             if ( trans ) {
                 std::vector<colorspace::Component> comps = colorspace::getColorSpaceInfo( prof );
 
-                size_t count = CMSSystem::getChannelCount( prof );
+                size_t count = Inkscape::CMSSystem::getChannelCount( prof );
                 size_t cap = std::min(count, comps.size());
                 guchar color_in[4];
                 for (size_t i = 0; i < cap; i++) {
@@ -532,7 +529,7 @@ g_message("profile name: %s", icc->colorProfile.c_str());
                     g_message("input[%d]: %d", (int)i, (int)color_in[i]);
                 }
 
-                CMSSystem::doTransform( trans, color_in, color_out, 1 );
+                Inkscape::CMSSystem::doTransform( trans, color_in, color_out, 1 );
 g_message("transform to sRGB done");
             }
             *r = color_out[0];
diff --git a/src/svg/svg-length.cpp b/src/svg/svg-length.cpp
index 262c6e1d5..a84c38bd4 100644
--- a/src/svg/svg-length.cpp
+++ b/src/svg/svg-length.cpp
@@ -16,6 +16,7 @@
 #include <string>
 #include <glib.h>
 #include <iostream>
+#include <vector>
 
 #include "svg.h"
 #include "stringstream.h"
diff --git a/src/ui/dialog/document-properties.cpp b/src/ui/dialog/document-properties.cpp
index ba101921b..c751950ba 100644
--- a/src/ui/dialog/document-properties.cpp
+++ b/src/ui/dialog/document-properties.cpp
@@ -23,6 +23,7 @@
 # include "config.h"  // only include where actually required!
 #endif
 
+#include <vector>
 #include "style.h"
 #include "rdf.h"
 #include "verbs.h"
@@ -47,8 +48,6 @@
 #include "object/color-profile.h"
 #endif // defined(HAVE_LIBLCMS1) || defined(HAVE_LIBLCMS2)
 
-using std::pair;
-
 namespace Inkscape {
 namespace UI {
 namespace Dialog {
diff --git a/src/ui/dialog/filedialogimpl-win32.cpp b/src/ui/dialog/filedialogimpl-win32.cpp
index dbe84ea38..d993c2113 100644
--- a/src/ui/dialog/filedialogimpl-win32.cpp
+++ b/src/ui/dialog/filedialogimpl-win32.cpp
@@ -21,6 +21,8 @@
 #include <gdkmm/general.h>
 #include <glibmm/fileutils.h>
 #include <glibmm/i18n.h>
+#include <list>
+#include <vector>
 
 //Inkscape includes
 #include "display/cairo-utils.h"
@@ -34,7 +36,6 @@
 #include "util/units.h"
 
 
-using namespace std;
 using namespace Glib;
 using namespace Cairo;
 using namespace Gdk::Cairo;
@@ -184,7 +185,7 @@ FileOpenDialogImplWin32::~FileOpenDialogImplWin32()
 
 void FileOpenDialogImplWin32::addFilterMenu(Glib::ustring name, Glib::ustring pattern)
 {
-    list<Filter> filter_list;
+    std::list<Filter> filter_list;
 
     int extension_index = 0;
     int filter_length = 1;
@@ -210,7 +211,7 @@ void FileOpenDialogImplWin32::addFilterMenu(Glib::ustring name, Glib::ustring pa
     _filter = new wchar_t[filter_length];
     wchar_t *filterptr = _filter;
 
-    for(list<Filter>::iterator filter_iterator = filter_list.begin();
+    for(std::list<Filter>::iterator filter_iterator = filter_list.begin();
         filter_iterator != filter_list.end(); ++filter_iterator)
     {
         const Filter &filter = *filter_iterator;
@@ -242,7 +243,7 @@ void FileOpenDialogImplWin32::addFilterMenu(Glib::ustring name, Glib::ustring pa
 
 void FileOpenDialogImplWin32::createFilterMenu()
 {
-    list<Filter> filter_list;
+    std::list<Filter> filter_list;
 
     int extension_index = 0;
     int filter_length = 1;
@@ -427,7 +428,7 @@ void FileOpenDialogImplWin32::createFilterMenu()
     _filter = new wchar_t[filter_length];
     wchar_t *filterptr = _filter;
 
-    for(list<Filter>::iterator filter_iterator = filter_list.begin();
+    for(std::list<Filter>::iterator filter_iterator = filter_list.begin();
         filter_iterator != filter_list.end(); ++filter_iterator)
     {
         const Filter &filter = *filter_iterator;
@@ -1609,7 +1610,7 @@ FileSaveDialogImplWin32::~FileSaveDialogImplWin32()
 
 void FileSaveDialogImplWin32::createFilterMenu()
 {
-    list<Filter> filter_list;
+    std::list<Filter> filter_list;
 
     knownExtensions.clear();
 
@@ -1655,7 +1656,7 @@ void FileSaveDialogImplWin32::createFilterMenu()
     _filter = new wchar_t[filter_length];
     wchar_t *filterptr = _filter;
 
-    for(list<Filter>::iterator filter_iterator = filter_list.begin();
+    for(std::list<Filter>::iterator filter_iterator = filter_list.begin();
         filter_iterator != filter_list.end(); ++filter_iterator)
     {
         const Filter &filter = *filter_iterator;
@@ -1685,7 +1686,7 @@ void FileSaveDialogImplWin32::createFilterMenu()
 
 void FileSaveDialogImplWin32::addFileType(Glib::ustring name, Glib::ustring pattern)
 {
-    list<Filter> filter_list;
+    std::list<Filter> filter_list;
 
     knownExtensions.clear();
 
@@ -1716,7 +1717,7 @@ void FileSaveDialogImplWin32::addFileType(Glib::ustring name, Glib::ustring patt
     _filter = new wchar_t[filter_length];
     wchar_t *filterptr = _filter;
 
-    for(list<Filter>::iterator filter_iterator = filter_list.begin();
+    for(std::list<Filter>::iterator filter_iterator = filter_list.begin();
         filter_iterator != filter_list.end(); ++filter_iterator)
     {
         const Filter &filter = *filter_iterator;
diff --git a/src/ui/tools/spray-tool.cpp b/src/ui/tools/spray-tool.cpp
index 4ae36ed23..28990bd2d 100644
--- a/src/ui/tools/spray-tool.cpp
+++ b/src/ui/tools/spray-tool.cpp
@@ -22,6 +22,7 @@
  */
 
 #include <numeric>
+#include <vector>
 
 #include <gdk/gdkkeysyms.h>
 #include <glibmm/i18n.h>
@@ -66,7 +67,6 @@
 
 
 using Inkscape::DocumentUndo;
-using namespace std;
 
 #define DDC_RED_RGBA 0xff0000ff
 #define DYNA_MIN_WIDTH 1.0e-6
diff --git a/src/ui/uxmanager.cpp b/src/ui/uxmanager.cpp
index 8c52dafa0..1f62ecec6 100644
--- a/src/ui/uxmanager.cpp
+++ b/src/ui/uxmanager.cpp
@@ -10,6 +10,7 @@
  * Released under GNU GPL v2+, read the file 'COPYING' for more information.
  */
 
+#include <vector>
 #include "widgets/desktop-widget.h"
 
 #include "uxmanager.h"
@@ -18,9 +19,6 @@
 #include "util/ege-tags.h"
 #include "widgets/toolbox.h"
 
-
-using std::vector;
-
 class TrackItem
 {
 public:
@@ -33,8 +31,8 @@ public:
     std::vector<GtkWidget*> boxes;
 };
 
-static vector<SPDesktop*> desktops;
-static vector<SPDesktopWidget*> dtws;
+static std::vector<SPDesktop*> desktops;
+static std::vector<SPDesktopWidget*> dtws;
 static std::map<SPDesktop*, TrackItem> trackedBoxes;
 
 
@@ -82,7 +80,7 @@ public:
     void addTrack( SPDesktopWidget* dtw ) override;
     void delTrack( SPDesktopWidget* dtw ) override;
 
-    void connectToDesktop( vector<GtkWidget *> const & toolboxes, SPDesktop *desktop ) override;
+    void connectToDesktop( std::vector<GtkWidget *> const & toolboxes, SPDesktop *desktop ) override;
 
     gint getDefaultTask( SPDesktop *desktop ) override;
     void setTask(SPDesktop* dt, gint val) override;
@@ -199,20 +197,20 @@ void UXManagerImpl::addTrack( SPDesktopWidget* dtw )
 
 void UXManagerImpl::delTrack( SPDesktopWidget* dtw )
 {
-    vector<SPDesktopWidget*>::iterator iter = std::find(dtws.begin(), dtws.end(), dtw);
+    std::vector<SPDesktopWidget*>::iterator iter = std::find(dtws.begin(), dtws.end(), dtw);
     if (iter != dtws.end()) {
         dtws.erase(iter);
     }
 }
 
-void UXManagerImpl::connectToDesktop( vector<GtkWidget *> const & toolboxes, SPDesktop *desktop )
+void UXManagerImpl::connectToDesktop( std::vector<GtkWidget *> const & toolboxes, SPDesktop *desktop )
 {
     if (!desktop)
     {
         return;
     }
     TrackItem &tracker = trackedBoxes[desktop];
-    vector<GtkWidget*>& tracked = tracker.boxes;
+    std::vector<GtkWidget*>& tracked = tracker.boxes;
     tracker.destroyConn = desktop->connectDestroy(&desktopDestructHandler);
 
     for (auto toolbox : toolboxes) {
diff --git a/src/ui/widget/page-sizer.cpp b/src/ui/widget/page-sizer.cpp
index 030e90af0..df6af9626 100644
--- a/src/ui/widget/page-sizer.cpp
+++ b/src/ui/widget/page-sizer.cpp
@@ -27,9 +27,6 @@
 #include "object/sp-root.h"
 #include "io/resource.h"
 
-using std::pair;
-using Inkscape::Util::unit_table;
-
 namespace Inkscape {
 namespace UI {
 namespace Widget {
@@ -133,7 +130,7 @@ PageSizer::PageSizer(Registry & _wr)
             snprintf(formatBuf, 79, "%0.1f x %0.1f", width, height);
             Glib::ustring desc = formatBuf;
             desc.append(" " + std::string(line[3]));
-            PaperSize paper(name, width, height, unit_table.getUnit(line[3]));
+            PaperSize paper(name, width, height, Inkscape::Util::unit_table.getUnit(line[3]));
             _paperSizeTable[name] = paper;
             Gtk::TreeModel::Row row = *(_paperSizeListStore->append());
             row[_paperSizeListColumns.nameColumn] = name;
@@ -450,12 +447,9 @@ PageSizer::updateFitMarginsUI(Inkscape::XML::Node *nv_repr)
 Gtk::ListStore::iterator
 PageSizer::find_paper_size (Inkscape::Util::Quantity w, Inkscape::Util::Quantity h) const
 {
-    using Inkscape::Util::Quantity;
-    using std::swap;
-
     // The code below assumes that w < h, so make sure that's the case:
     if ( h < w ) {
-        swap(h,w);
+        std::swap(h,w);
     }
 
     g_return_val_if_fail(w <= h, _paperSizeListStore->children().end());
@@ -464,8 +458,8 @@ PageSizer::find_paper_size (Inkscape::Util::Quantity w, Inkscape::Util::Quantity
     for (iter = _paperSizeTable.begin() ;
          iter != _paperSizeTable.end() ; ++iter) {
         PaperSize paper = iter->second;
-        Quantity smallX (paper.smaller, paper.unit);
-        Quantity largeX (paper.larger, paper.unit);
+        Inkscape::Util::Quantity smallX (paper.smaller, paper.unit);
+        Inkscape::Util::Quantity largeX (paper.larger, paper.unit);
 
         g_return_val_if_fail(smallX.quantity < largeX.quantity + 0.001, _paperSizeListStore->children().end());
 
diff --git a/src/ui/widget/preview.cpp b/src/ui/widget/preview.cpp
index f22032b65..2de9a9a28 100644
--- a/src/ui/widget/preview.cpp
+++ b/src/ui/widget/preview.cpp
@@ -36,8 +36,6 @@
  * ***** END LICENSE BLOCK ***** */
 
 #include <algorithm>
-using std::min;
-
 #include <gdkmm/general.h>
 #include "preview.h"
 #include "preferences.h"
@@ -272,7 +270,7 @@ Preview::on_draw(const Cairo::RefPtr<Cairo::Context> &cr)
             context->render_arrow(cr,
                                   G_PI, // Down-pointing arrow
                                   area.x, area.y,
-                                  min(area.width, area.height)
+                                  std::min(area.width, area.height)
                                  );
         }
 
@@ -286,7 +284,7 @@ Preview::on_draw(const Cairo::RefPtr<Cairo::Context> &cr)
             context->render_arrow(cr,
                                   G_PI, // Down-pointing arrow
                                   otherArea.x, otherArea.y,
-                                  min(otherArea.width, otherArea.height)
+                                  std::min(otherArea.width, otherArea.height)
                                  );
         }
 
@@ -300,7 +298,7 @@ Preview::on_draw(const Cairo::RefPtr<Cairo::Context> &cr)
             context->render_arrow(cr,
                                   1.5*G_PI, // Left-pointing arrow
                                   otherArea.x, otherArea.y,
-                                  min(otherArea.width, otherArea.height)
+                                  std::min(otherArea.width, otherArea.height)
                                  );
         }
 
diff --git a/src/widgets/gradient-selector.cpp b/src/widgets/gradient-selector.cpp
index b4a58fe4d..9cd0cf19f 100644
--- a/src/widgets/gradient-selector.cpp
+++ b/src/widgets/gradient-selector.cpp
@@ -16,6 +16,7 @@
 
 #include <glibmm/i18n.h>
 #include <gtkmm/treeview.h>
+#include <vector>
 
 #include "document-undo.h"
 #include "document.h"
@@ -213,7 +214,6 @@ static void sp_gradient_selector_dispose(GObject *object)
 
     if ( sel->safelyInit ) {
         sel->safelyInit = false;
-        using std::vector;
         sel->nonsolid.~vector<GtkWidget*>();
         sel->swatch_widgets.~vector<GtkWidget*>();
     }
diff --git a/src/xml/composite-node-observer.cpp b/src/xml/composite-node-observer.cpp
index e3b40d43b..1f9c08681 100644
--- a/src/xml/composite-node-observer.cpp
+++ b/src/xml/composite-node-observer.cpp
@@ -161,8 +161,6 @@ void CompositeNodeObserver::addListener(NodeEventVector const &vector,
 
 namespace {
 
-using std::find_if;
-using Algorithms::find_if_before;
 typedef CompositeNodeObserver::ObserverRecord ObserverRecord;
 typedef CompositeNodeObserver::ObserverRecordList ObserverRecordList;
 
@@ -205,7 +203,7 @@ bool remove_one(ObserverRecordList &observers, unsigned &/*marked_count*/,
         return true;
     }
 
-    ObserverRecordList::iterator found=find_if_before(
+    ObserverRecordList::iterator found=Algorithms::find_if_before(
         observers.begin(), observers.end(),
         unmarked_record_satisfying<Predicate>(p)
     );
@@ -233,7 +231,7 @@ void remove_all_marked(ObserverRecordList &observers, unsigned &marked_count)
 
     iter = observers.begin();
     while (marked_count) {
-        iter = find_if_before(iter, observers.end(), is_marked);
+        iter = Algorithms::find_if_before(iter, observers.end(), is_marked);
         observers.erase_after(iter);
         --marked_count;
     }