anchorRow

[lyx.git] / src / text.C

diff --git a/src/text.C b/src/text.C
index e1239f2878611e8352f221ba48707c9563beefbc..5235f1611f99671db3642d698738f4e07fe2b872 100644 (file)
--- a/src/text.C
+++ b/src/text.C
@@ -74,14 +74,15 @@ BufferView * LyXText::bv() const
 
 int LyXText::top_y() const
 {
-       if (!top_row_)
+       if (!anchor_row_)
                return 0;
 
        int y = 0;
-       for (Row * row = firstrow; row && row != top_row_; row = row->next()) {
+       for (Row * row = firstrow; 
+            row && row != anchor_row_; row = row->next()) {
                y += row->height();
        }
-       return y + top_row_offset_;
+       return y + anchor_row_offset_;
 }
 
 
@@ -92,10 +93,22 @@ void LyXText::top_y(int newy)
        lyxerr[Debug::GUI] << "setting top y = " << newy << endl;
 
        int y = newy;
-       top_row_ = getRowNearY(y);
-       top_row_offset_ = newy - y;
-       lyxerr[Debug::GUI] << "changing reference to row: " << top_row_
-              << " offset: " << top_row_offset_ << endl;
+       anchor_row_ = getRowNearY(y);
+       anchor_row_offset_ = newy - y;
+       lyxerr[Debug::GUI] << "changing reference to row: " << anchor_row_
+              << " offset: " << anchor_row_offset_ << endl;
+}
+
+
+void LyXText::anchor_row(Row * row)
+{
+       int old_y = top_y();
+       anchor_row_offset_ = 0;
+       anchor_row_ = row; 
+       anchor_row_offset_ = old_y - top_y();
+       lyxerr[Debug::GUI] << "anchor_row(): changing reference to row: " 
+                          << anchor_row_ << " offset: " << anchor_row_offset_ 
+                          << endl;
 }