ASignal

Signal field which can be subscribed to.

Header:	#include <AUI/Common/ASignal.h>
CMake:	aui_link(my_target PUBLIC aui::core)

Detailed Description

Public Types

call_wrapper

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struct ASignal::call_wrapper

Empty structure.

Public Methods

bool

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operator ASignal::bool()

Check whether signal contains any connected slots or not.

Returns

true, if slot contains any connected slots, false otherwise.

It's very useful then signal argument values calculation is expensive and you do not want to calculate them if no slots connected to the signal.

Examples

examples/app/minesweeper/src/CellView.cpp

Minesweeper Game - Minesweeper game implementation driven by ass.

        mCellValueCopy = mCell;
    }
    AView::render(context);

    if (bool(mCell & FieldCell::OPEN)) {
        int count = field_cell::getBombCountAround(mCell);
        if (count) {
            AFontStyle fs;
            fs.size = getHeight() * 6 / 7;
            fs.align = ATextAlign::CENTER;