3 files changed, 102 insertions, 2 deletions

diff --git a/src/libnrtype/Layout-TNG-Input.cpp b/src/libnrtype/Layout-TNG-Input.cpp
index 2ee0051a4..33371ab10 100644
--- a/src/libnrtype/Layout-TNG-Input.cpp
+++ b/src/libnrtype/Layout-TNG-Input.cpp
@@ -16,8 +16,11 @@
 #include "style.h"
 #include "svg/svg-length.h"
 #include "sp-object.h"
+#include "sp-string.h"
 #include "FontFactory.h"
 
+#include "text-editing.h" // for inputTruncated()
+
 namespace Inkscape {
 namespace Text {
 
@@ -321,5 +324,71 @@ Layout::InputStreamTextSource::~InputStreamTextSource()
     sp_style_unref(style);
 }
 
+bool
+Layout::inputTruncated() const
+{
+	if (!inputExists())
+		return false;
+
+	// Find out the SPObject to which the last visible character corresponds:
+	Layout::iterator last = end();
+	if (last == begin()) {
+           // FIXME: this returns a wrong "not truncated" when a flowtext is entirely
+           // truncated, so there are no visible characters. But how can I find out the
+           // originator SPObject without having anything to do getSourceOfCharacter
+           // from?
+		return false; 
+	}
+	last.prevCharacter();
+	void *source;
+	Glib::ustring::iterator offset;
+	getSourceOfCharacter(last, &source, &offset);
+	SPObject *obj = SP_OBJECT(source);
+
+	// if that is SPString, see if it has further characters beyond the last visible
+	if (obj && SP_IS_STRING(obj)) {
+		Glib::ustring::iterator offset_next = offset;
+		offset_next ++;
+		if (offset_next != SP_STRING(obj)->string.end()) {
+			// truncated: source SPString has next char
+			return true;
+		}
+	}
+
+	// otherwise, see if the SPObject at end() or any of its text-tree ancestors
+	// (excluding top-level SPText or SPFlowText) have a text-tree next sibling with
+	// visible text
+	if (obj) {
+		for (SPObject *ascend = obj; 
+				 ascend && (is_part_of_text_subtree (ascend) && !is_top_level_text_object(ascend));
+				 ascend = SP_OBJECT_PARENT(ascend)) {
+			if (SP_OBJECT_NEXT(ascend)) {
+				SPObject *next = SP_OBJECT_NEXT(ascend);
+				if (next && is_part_of_text_subtree(next) && has_visible_text(next)) {
+					// truncated: source text object has next text sibling
+					return true;
+				}
+			}
+		}
+	}
+
+	// the above works for flowed text, but not for text on path.
+	// so now, we also check if the last of the _characters, if coming from a TEXT_SOURCE,
+	// has in_glyph different from -1
+	unsigned last_char = _characters.size() - 1;
+	unsigned span_index = _characters[last_char].in_span;
+	Glib::ustring::const_iterator iter_char = _spans[span_index].input_stream_first_character;
+
+	if (_input_stream[_spans[span_index].in_input_stream_item]->Type() == TEXT_SOURCE) {
+		if (_characters[last_char].in_glyph == -1) {
+			//truncated: last char has no glyph
+			return true;
+		}
+	}
+
+	// not truncated
+	return false;
+}
+
 }//namespace Text
 }//namespace Inkscape
diff --git a/src/libnrtype/Layout-TNG-OutIter.cpp b/src/libnrtype/Layout-TNG-OutIter.cpp
index 0fc061bfc..f4e8e4031 100644
--- a/src/libnrtype/Layout-TNG-OutIter.cpp
+++ b/src/libnrtype/Layout-TNG-OutIter.cpp
@@ -221,6 +221,31 @@ Geom::Point Layout::characterAnchorPoint(iterator const &it) const
     }
 }
 
+boost::optional<Geom::Point> Layout::baselineAnchorPoint() const
+{
+    iterator pos = this->begin();
+    Geom::Point left_pt = this->characterAnchorPoint(pos);
+    pos.thisEndOfLine();
+    Geom::Point right_pt = this->characterAnchorPoint(pos);
+    Geom::Point mid_pt = (left_pt + right_pt)/2;
+
+    switch (this->paragraphAlignment(pos)) {
+        case LEFT:
+        case FULL:
+            return left_pt;
+            break;
+        case CENTER:
+            return mid_pt;
+            break;
+        case RIGHT:
+            return right_pt;
+            break;
+        default:
+            return boost::optional<Geom::Point>();
+            break;
+    }
+}
+
 Geom::Point Layout::chunkAnchorPoint(iterator const &it) const
 {
     unsigned chunk_index;
@@ -705,7 +730,7 @@ bool Layout::iterator::nextLineCursor(int n)
     unsigned line_index = _parent_layout->_characters[_char_index].chunk(_parent_layout).in_line;
     if (line_index == _parent_layout->_lines.size() - 1) 
         return false; // nowhere to go
-		else
+    else
         n = MIN (n, static_cast<int>(_parent_layout->_lines.size() - 1 - line_index));
     if (_parent_layout->_lines[line_index + n].in_shape != _parent_layout->_lines[line_index].in_shape) {
         // switching between shapes: adjust the stored x to compensate
@@ -728,7 +753,7 @@ bool Layout::iterator::prevLineCursor(int n)
         line_index = _parent_layout->_characters[_char_index].chunk(_parent_layout).in_line;
     if (line_index == 0) 
         return false; // nowhere to go
-		else 
+    else
         n = MIN (n, static_cast<int>(line_index));
     if (_parent_layout->_lines[line_index - n].in_shape != _parent_layout->_lines[line_index].in_shape) {
         // switching between shapes: adjust the stored x to compensate
diff --git a/src/libnrtype/Layout-TNG.h b/src/libnrtype/Layout-TNG.h
index 19680b140..05b5103fc 100644
--- a/src/libnrtype/Layout-TNG.h
+++ b/src/libnrtype/Layout-TNG.h
@@ -212,6 +212,8 @@ public:
     bool inputExists() const
         {return !_input_stream.empty();}
 
+    bool inputTruncated() const;
+
     /** adds a new piece of text to the end of the current list of text to
     be processed. This method can only add text of a consistent style.
     To add lots of different styles, call it lots of times.
@@ -480,6 +482,10 @@ public:
     /** For latin text, the left side of the character, on the baseline */
     Geom::Point characterAnchorPoint(iterator const &it) const;
 
+    /** For left aligned text, the leftmost end of the baseline
+    For rightmost text, the rightmost... you probably got it by now ;-)*/
+    boost::optional<Geom::Point> baselineAnchorPoint() const;
+
     /** This is that value to apply to the x,y attributes of tspan role=line
     elements, and hence it takes alignment into account. */
     Geom::Point chunkAnchorPoint(iterator const &it) const;