本文整理汇总了C++中decimal::as_float方法的典型用法代码示例。如果您正苦于以下问题：C++ decimal::as_float方法的具体用法？C++ decimal::as_float怎么用？C++ decimal::as_float使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类decimal的用法示例。
在下文中一共展示了decimal::as_float方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: select_token
void code_editor_widget::select_token(const std::string& row, int& begin_row, int& end_row, int& begin_col, int& end_col)
{
std::pair<int,int> key(begin_row, begin_col);
if(bracket_match_.count(key)) {
begin_row = bracket_match_.find(key)->second.front().first;
begin_col = bracket_match_.find(key)->second.front().second;
end_row = bracket_match_.find(key)->second.back().first;
end_col = bracket_match_.find(key)->second.back().second+1;
return;
}
text_editor_widget::select_token(row, begin_row, end_row, begin_col, end_col);
std::string token(row.begin() + begin_col, row.begin() + end_col);
boost::regex numeric_regex("-?\\d+(\\.\\d+)?", boost::regex::perl);
std::cerr << "token: (" << token << ")\n";
if(boost::regex_match(token.c_str(), numeric_regex)) {
const decimal current_value(decimal::from_string(token));
if(current_value <= 10000000 && current_value >= -10000000) {
slider_.reset(new slider(200, boost::bind(&code_editor_widget::on_slider_move, this, _1)));
slider_decimal_ = std::count(token.begin(), token.end(), '.') ? true : false;
slider_magnitude_ = (abs(current_value.as_int())+1) * 5;
const decimal slider_value = (current_value - decimal::from_int(-slider_magnitude_)) / decimal::from_int(slider_magnitude_*2);
slider_->set_position(slider_value.as_float());
slider_range_.clear();
slider_labels_.clear();
if(current_value > 0) {
slider_range_.push_back(slider_range(0.0, 0.1, -current_value*5, -current_value));
slider_range_.push_back(slider_range(0.1, 0.2, -current_value, decimal(0)));
slider_range_.push_back(slider_range(0.2, 0.3, decimal(0), current_value));
slider_range_.push_back(slider_range(0.3, 0.5, decimal(0), current_value));
slider_range_.push_back(slider_range(0.5, 0.7, current_value, 2*current_value));
slider_range_.push_back(slider_range(0.7, 0.9, 2*current_value, 5*current_value));
slider_range_.push_back(slider_range(0.9, 1.0, 5*current_value, 10*current_value));
slider_range_.push_back(slider_range(1.0, 2.0, 10*current_value, 20*current_value));
slider_->set_position(0.5);
} else {
slider_range_.push_back(slider_range(0.0, 0.5, current_value*2, decimal(0)));
slider_range_.push_back(slider_range(0.5, 1.0, decimal(0), -current_value*2));
slider_range_.push_back(slider_range(1.0, 2.0, -current_value*2, -current_value*4));
slider_->set_position(0.25);
}
std::pair<int,int> pos = char_position_on_screen(begin_row, (begin_col+end_col)/2);
row_slider_ = begin_row;
begin_col_slider_ = begin_col;
end_col_slider_ = end_col;
int x = pos.second - slider_->width()/2;
int y = pos.first + 20 - slider_->height();
if(x < 10) {
x = 10;
}
if(x > width() - slider_->width()) {
x = width() - slider_->width();
}
if(y < 20) {
y += 60;
}
if(y > height() - slider_->height()) {
y = height() - slider_->height();
}
slider_->set_loc(x, y);
foreach(slider_range& r, slider_range_) {
slider_labels_.push_back(widget_ptr(new gui::label(formatter() << r.target_begin, 10)));
slider_labels_.back()->set_loc(x + slider_->width()*r.begin - slider_labels_.back()->width()/2, y);
}
}