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cxx: Showcase function pointer in calendar example 

This is just a work-in-progress example.
This commit is contained in:
Jean-Philippe Andre 2017-11-22 17:14:55 +09:00
parent 5425baa906
commit 425d8db90f
1 changed files with 49 additions and 29 deletions
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78
src/examples/elementary/calendar_cxx_example_02.cc
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@ -1,40 +1,60 @@
#define EFL_CXX_WREF_EASY
#include <Elementary.hh>
using efl::eo::instantiate;
using namespace std::placeholders;
// FIXME: Function callbacks need a lot of love in C++
static void
_format_cb(void *data EINA_UNUSED, Eina_Strbuf *str, const Eina_Value value)
struct appData
{
if (::eina_value_type_get(&value) != ::EINA_VALUE_TYPE_TM)
{
// FIXME: val.to_string()
char *convert = ::eina_value_to_string(&value);
eina_strbuf_append(str, convert);
free(convert);
}
else
{
struct tm time;
eina_value_get(&value, &time);
eina_strbuf_append_strftime(str, "%b. %y", &time);
}
}
appData() : m_win(nullptr) {}
~appData() {
std::cout << "Good bye!" << std::endl;
}
void create() {
std::cout << "Hello!" << std::endl;
instantiate(m_win);
m_win.text_set("Calendar Layout Formatting Example");
m_win.delete_request_event_cb_add([&](){ destroy(); });
efl::ui::Calendar cal(instantiate, m_win);
m_win.content_set(cal);
auto wcal(cal._get_wref());
// FIXME: How does one figure out the argument types for the function?
auto cb_a = std::bind([=](
efl::eina::strbuf_wrapper& sb,
efl::eina::value_view const& value) {
try {
sb.append_strftime("%b. %y", efl::eina::get<tm>(value));
} catch (std::system_error const&) {
sb.append(value.to_string());
}
std::cout << "Month: " << std::string(sb) << std::endl;
}, _1, _2);
cal.format_cb_set(cb_a);
}
void destroy() {
// FIXME: need del() function and no error on unref().
::efl_allow_parent_unref_set(m_win._eo_ptr(), true);
m_win = nullptr;
}
private:
efl::ui::Win m_win;
};
static appData app;
static void
efl_main(void *data EINA_UNUSED, const Efl_Event *ev EINA_UNUSED)
{
elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_HIDDEN);
efl::ui::Win win(instantiate);
win.text_set("Calendar Layout Formatting Example");
win.autohide_set(true);
efl::ui::Calendar cal(instantiate, win);
win.content_set(cal);
// FIXME: Function cb doesn't work (C++ variant)
cal.format_cb_set(_format_cb);
::efl_ui_format_cb_set(cal._eo_ptr(), NULL, _format_cb, NULL);
elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
app.create();
}
EFL_MAIN()