Method handleMousePress

examples/text/Text.cpp:345–411

    }

    void handleMousePress(const sf::Vector2f& position)
    {
        // Filter out the event if the press was not on this text
        if (!boundingBox.getGlobalBounds().contains(position))
            return;

        const auto& transform = text.getTransform();

        // Since performance isn't really important here we will just use brute-force

        // Glyph box
        {
            // Compute the distance between the center of each glyph box
            // and the mouse position and pick the index with the lowest distance
            auto closestIndex    = std::size_t{0};
            auto closestDistance = text.getLocalBounds().size.x;

            for (auto i = 0u; i < text.getShapedGlyphs().size(); ++i)
            {
                glyphIndex = i;
                updateGlyphBox(0);

                const auto distance = (transform.transformPoint(glyphBox.getGlobalBounds().getCenter()) - position).length();

                if (distance < closestDistance)
                {
                    closestIndex    = i;
                    closestDistance = distance;
                }
            }

            glyphIndex = closestIndex;
            updateGlyphBox(0);
        }

        // Cursor
        {
            // Compute the distance between the center of each valid cursor position
            // and the mouse position and pick the index with the lowest distance
            auto closestIndex    = std::size_t{0};
            auto closestDistance = text.getLocalBounds().size.x;

            cursorIndex = 0u;
            updateCursorPosition(0);

            // Keep moving the cursor until it no longer wants to move
            while (true)
            {
                const auto distance = (transform.transformPoint(cursor.getGlobalBounds().getCenter()) - position).length();

                if (distance < closestDistance)
                {
                    closestIndex    = cursorIndex;
                    closestDistance = distance;
                }

                const auto previousCursorIndex = cursorIndex;
                updateCursorPosition(1);