Refactor visible height calculation in Entry and Text

[libs/gltk.git] / source / entry.cpp

diff --git a/source/entry.cpp b/source/entry.cpp
index af6fcc6d0fd31ed5cfdbdc03f4fda57e9db6c55c..6d13ccdd0377eaaff11b29db0c27981d5b9cacc0 100644 (file)
--- a/source/entry.cpp
+++ b/source/entry.cpp
@@ -57,7 +57,50 @@ void Entry::autosize_special(const Part &part, Geometry &ageom) const
 void Entry::set_text(const string &t)
 {
        text = t;
-       edit_pos = text.size();
+       set_edit_position(text.size());
+}
+
+void Entry::insert(unsigned pos, const string &t)
+{
+       text.insert(pos, t);
+
+       if(edit_pos>=pos)
+               edit_pos += t.size();
+       if(selection_active && selection_pos>=pos)
+               selection_pos += t.size();
+
+       if(multiline)
+               check_view_range();
+
+       rebuild();
+}
+
+void Entry::erase(unsigned pos, unsigned len)
+{
+       text.erase(pos, len);
+
+       if(edit_pos>=pos+len)
+               edit_pos -= len;
+       else if(edit_pos>=pos)
+               edit_pos = pos;
+       if(selection_active)
+       {
+               if(selection_pos>=pos+len)
+                       selection_pos -= len;
+               else if(selection_pos>=pos)
+                       selection_pos = pos;
+       }
+
+       if(multiline)
+               check_view_range();
+
+       rebuild();
+}
+
+void Entry::set_edit_position(unsigned pos)
+{
+       edit_pos = min(pos, text.size());
+       selection_active = false;
 
        if(multiline)
                check_view_range();
@@ -65,6 +108,19 @@ void Entry::set_text(const string &t)
        rebuild();
 }
 
+bool Entry::get_selection(unsigned &start, unsigned &end) const
+{
+       if(!selection_active)
+               return false;
+
+       start = selection_pos;
+       end = edit_pos;
+       if(start>end)
+               swap(start, end);
+
+       return true;
+}
+
 void Entry::set_edit_size(unsigned w, unsigned h)
 {
        edit_width = w;
@@ -384,11 +440,7 @@ void Entry::check_view_range()
        if(!multiline || !text_part)
                return;
 
-       float font_size = style->get_font_size();
-       unsigned line_spacing = static_cast<unsigned>(font_size*6/5);
-
-       const Sides &margin = text_part->get_margin();
-       visible_rows = max((geom.h-margin.top-margin.bottom)/line_spacing, 1U);
+       visible_rows = text.get_visible_lines(*text_part, geom, 0);
 
        unsigned row, col;
        text.offset_to_coords(edit_pos, row, col);