Method draw

src/ImageButton.cpp:148–239

}

void ImageButton::draw(NVGcontext* ctx) {
    Widget::draw(ctx);

    if (mCaptionTextBox->visible()) {
        return;
    }

    if (mIsReference) {
        nvgBeginPath(ctx);
        nvgRect(ctx, m_pos.x(), m_pos.y(), m_size.x(), m_size.y());
        nvgFillColor(ctx, REFERENCE_COLOR);
        nvgFill(ctx);
    }

    // Fill the button with color.
    if (mIsSelected || m_mouse_focus) {
        nvgBeginPath(ctx);

        if (mIsReference) {
            nvgRect(ctx, m_pos.x() + 2, m_pos.y() + 2, m_size.x() - 4, m_size.y() - 4);
        } else {
            nvgRect(ctx, m_pos.x(), m_pos.y(), m_size.x(), m_size.y());
        }

        nvgFillColor(ctx, mIsSelected ? IMAGE_COLOR : Color(1.0f, 0.1f));
        nvgFill(ctx);
    }

    const string idString = to_string(mId);
    if (mHighlightBegin == 0 && mHighlightEnd == 0 && m_size.x() >= preferred_size_impl(ctx).x()) {
        mCutoff = 0;
    } else if (m_size != mSizeForWhichCutoffWasComputed) {
        mCutoff = 0;

        nvgFontSize(ctx, m_font_size + 2);
        nvgFontFace(ctx, "sans-bold");
        const float idSize = nvgTextBounds(ctx, 0, 0, idString.data(), idString.data() + idString.size(), nullptr);

        vector<size_t> codePointOffsets;
        for (size_t i = 0; i < mCaption.size(); i += codePointLength(mCaption[i])) {
            codePointOffsets.push_back(i);
        }

        const auto boundsView = codePointOffsets | views::transform([&, ctx](size_t offset) { return getCaptionWidth(ctx, offset); });

        const auto it = ranges::lower_bound(boundsView, m_size.x() - 25 - idSize, greater{});
        if (it != boundsView.end()) {
            mCutoff = codePointOffsets.at(distance(boundsView.begin(), it));
        }

        mSizeForWhichCutoffWasComputed = m_size;
    }

    // Image name

    const Vector2f center = Vector2f{m_pos} + Vector2f{m_size} * 0.5f;
    const Vector2f bottomRight = Vector2f{m_pos} + Vector2f{m_size};
    Vector2f textPos{bottomRight.x() - 5, center.y() + 0.5f * (m_font_size + 1)};