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implement double click to auto resize a column in listbox

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This commit is contained in:
qPCR4vir
2015-05-08 00:31:32 +02:00
parent 371633f23f
commit e696fff779
2 changed files with 36 additions and 30 deletions
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47
source/gui/widgets/listbox.cpp
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@@ -2304,7 +2304,29 @@ namespace nana
break;
}
}
private:
unsigned auto_width(size_type pos, unsigned max=3000) /// \todo introduce parametr max_header_width
{
unsigned max_w{0} ;
for (const auto &cat : lister.cat_container())
for (const auto &it : cat.items )
{
if (pos >= it.cells.size()) continue;
// precalcule text geometry
unsigned ts = static_cast<unsigned> ( graph->text_extent_size(it.cells[pos].text).width);
if (max_w < ts)
max_w = ts;
}
if (!max_w) return 0;
unsigned ext_w = scheme_ptr->ext_w ;
if( pos == 0 && checkable) // only before the first column (display_order=0 ?)
ext_w += 18;
header.item_width(pos, max_w + ext_w + 1 < max ? max_w + ext_w + 1 : max);
return max_w;
}
private:
void _m_answer_scroll(const arg_mouse& arg)
{
if(arg.evt_code == event_code::mouse_move && arg.left_button == false) return;
@@ -2907,7 +2929,7 @@ namespace nana
cell_txtcolor = m_cell.custom_format->fgcolor;
}
int ext_w = 5;
int ext_w = essence_->scheme_ptr->ext_w;
if(first && essence_->checkable) // draw the checkbox if need, only before the first column (display_order=0 ?)
{
ext_w += 18;
@@ -3306,6 +3328,14 @@ namespace nana
void trigger::dbl_click(graph_reference graph, const arg_mouse&)
{
if (essence_->pointer_where.first == essence_t::parts::header)
if (cursor::size_we == essence_->lister.wd_ptr()->cursor())
{
if (essence(). auto_width(drawer_header_->item_spliter() )) // ? in order
essence().update();
return;
}
if (essence_->pointer_where.first != essence_t::parts::lister)
return;
@@ -4010,19 +4040,8 @@ namespace nana
}
unsigned listbox::auto_width(size_type pos, unsigned max)
{
unsigned max_w{0};
auto & ess = _m_ess();
for (const auto &cat : ess.lister.cat_container())
for (const auto &it : cat.items )
{
if (pos >= it.cells.size()) continue;
// precalcule text geometry
unsigned ts = static_cast<unsigned> ( ess.graph->text_extent_size(it.cells[pos].text).width);
if (max_w < ts)
max_w = ts;
}
if (!max_w) return 0;
header_width(pos, max_w < max ? max_w : max);
unsigned max_w = ess.auto_width(pos, max);
ess.update();
return max_w;
}