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add a method to textbox

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a method to get bounds of a text selection
This commit is contained in:
Jinhao 2016-09-12 00:01:12 +08:00
parent d6cb631bc2
commit 422f2c768b
4 changed files with 46 additions and 27 deletions
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3
include/nana/gui/widgets/skeletons/text_editor.hpp
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@ -151,6 +151,8 @@ namespace nana{ namespace widgets
bool selected() const;
bool select(bool);
bool get_select_points(nana::upoint&, nana::upoint&) const;
/// Sets the end position of a selected string.
void set_end_caret();
@ -233,7 +235,6 @@ namespace nana{ namespace widgets
//@brief: redraw whole line specified by caret pos.
//@return: true if caret overs the border
bool _m_update_caret_line(std::size_t secondary_before);
bool _m_get_sort_select_points(nana::upoint&, nana::upoint&) const;
void _m_offset_y(int y);

8
include/nana/gui/widgets/textbox.hpp
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@ -184,7 +184,7 @@ namespace nana
bool editable() const;
textbox& editable(bool);
/// Enables the caret if the textbox current is not editable
/// Enables the caret if the textbox currently is not editable
textbox& enable_caret();
void set_accept(std::function<bool(wchar_t)>);
@ -200,6 +200,12 @@ namespace nana
/// Selects/unselects all text.
void select(bool);
/// Returns the bounds of a text selection
/**
* @return no selection if pair.first == pair.second.
*/
std::pair<upoint, upoint> selection() const;
void copy() const; ///< Copies the selected text into shared memory, such as clipboard under Windows.
void paste(); ///< Pastes the text from shared memory.
void del();

50
source/gui/widgets/skeletons/text_editor.cpp
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@ -2081,6 +2081,25 @@ namespace nana{ namespace widgets
return false;
}
bool text_editor::get_select_points(nana::upoint& a, nana::upoint& b) const
{
if (select_.a == select_.b)
return false;
if (select_.a < select_.b)
{
a = select_.a;
b = select_.b;
}
else
{
a = select_.b;
b = select_.a;
}
return true;
}
bool text_editor::hit_text_area(const point& pos) const
{
return _m_text_area().is_hit(pos);
@ -2089,7 +2108,7 @@ namespace nana{ namespace widgets
bool text_editor::hit_select_area(nana::upoint pos, bool ignore_when_select_all) const
{
nana::upoint a, b;
if(_m_get_sort_select_points(a, b))
if(get_select_points(a, b))
{
if (ignore_when_select_all)
{
@ -3006,7 +3025,7 @@ namespace nana{ namespace widgets
nana::upoint text_editor::_m_erase_select()
{
nana::upoint a, b;
if (_m_get_sort_select_points(a, b))
if (get_select_points(a, b))
{
auto & textbase = this->textbase();
if(a.y != b.y)
@ -3037,7 +3056,7 @@ namespace nana{ namespace widgets
std::wstring text;
nana::upoint a, b;
if (_m_get_sort_select_points(a, b))
if (get_select_points(a, b))
{
auto & textbase = this->textbase();
if (a.y != b.y)
@ -3128,7 +3147,7 @@ namespace nana{ namespace widgets
bool text_editor::_m_cancel_select(int align)
{
nana::upoint a, b;
if(_m_get_sort_select_points(a, b))
if (get_select_points(a, b))
{
switch(align)
{
@ -3223,7 +3242,7 @@ namespace nana{ namespace widgets
const bool at_left = (select_.b < select_.a);
nana::upoint a, b;
_m_get_sort_select_points(a, b);
get_select_points(a, b);
if (caret.y < a.y || (caret.y == a.y && caret.x < a.x))
{//forward
undo_ptr->set_caret_pos();
@ -3419,7 +3438,7 @@ namespace nana{ namespace widgets
const wchar_t *sbegin = nullptr, *send = nullptr;
nana::upoint a, b;
if (_m_get_sort_select_points(a, b))
if (get_select_points(a, b))
{
if (a.y < text_coord.y && text_coord.y < b.y)
{
@ -3576,25 +3595,6 @@ namespace nana{ namespace widgets
return true;
}
bool text_editor::_m_get_sort_select_points(nana::upoint& a, nana::upoint& b) const
{
if (select_.a == select_.b)
return false;
if (select_.a < select_.b)
{
a = select_.a;
b = select_.b;
}
else
{
a = select_.b;
b = select_.a;
}
return true;
}
void text_editor::_m_offset_y(int y)
{
points_.offset.y = y;

12
source/gui/widgets/textbox.cpp
View File

@ -469,6 +469,18 @@ namespace drawerbase {
API::update_window(*this);
}
std::pair<upoint, upoint> textbox::selection() const
{
std::pair<upoint, upoint> points;
internal_scope_guard lock;
auto editor = get_drawer_trigger().editor();
if (editor)
editor->get_select_points(points.first, points.second);
return points;
}
void textbox::copy() const
{
internal_scope_guard lock;