Method BuildControlDialog

tools/explorer/FlatImageView.cpp:343–535

}

void FlatImageView::BuildControlDialog()
{
    ImGuiIO const& io = ImGui::GetIO();
    float const fontSize = ImGui::GetFontSize();

    ImGui::SetNextWindowPos(ImVec2(
        m_viewOrigin.x + m_viewSize.x * 0.5f, 
        m_viewOrigin.y + m_viewSize.y - fontSize * 0.6f),
        ImGuiCond_Always, ImVec2(0.5f, 1.0f));

    ImGui::Begin("Flat Image View", nullptr, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoScrollbar |
        ImGuiWindowFlags_NoResize | ImGuiWindowFlags_AlwaysAutoResize);

    // Mip Level slider
    if (m_numMips > 1)
    {
        ImGui::PushItemWidth(fontSize * 5.f);
        ImGui::SliderInt("##MipLevel", &m_mipLevel, 0, m_numMips - 1, "Mip %d");
        ImGui::PopItemWidth();
    }
    else
    {
        ImGui::AlignTextToFramePadding();
        ImGui::TextUnformatted("(No Mips)");
    }
    
    // Channel toggle buttons
    uint32_t availableChannelMask = (1 << m_textureChannels) - 1;
    uint32_t effectiveChannelMask = m_channelMask & availableChannelMask;

    ImGui::SameLine(fontSize * 6.25f);
    ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(6.f, 3.f));
    ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(1.f, 0.1f, 0.1f, 1.f));
    ImGui::ToggleButtonFlags("R", &effectiveChannelMask, 1);
    ImGui::PopStyleColor();
    ImGui::SameLine();
    ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(0.1f, 1.f, 0.1f, 1.f));
    ImGui::BeginDisabled(m_textureChannels < 2);
    ImGui::ToggleButtonFlags("G", &effectiveChannelMask, 2, ImVec2(0.f, 0.f));
    ImGui::EndDisabled();
    ImGui::PopStyleColor();
    ImGui::SameLine();
    ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(0.1f, 0.1f, 1.f, 1.f));
    ImGui::BeginDisabled(m_textureChannels < 2);
    ImGui::ToggleButtonFlags("B", &effectiveChannelMask, 4, ImVec2(0.f, 0.f));
    ImGui::EndDisabled();
    ImGui::PopStyleColor();
    ImGui::SameLine();
    ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(0.4f, 0.4f, 0.4f, 1.f));
    ImGui::BeginDisabled(m_textureChannels < 2);
    ImGui::ToggleButtonFlags("A", &effectiveChannelMask, 8, ImVec2(0.f, 0.f));
    ImGui::EndDisabled();
    ImGui::PopStyleColor();
    ImGui::PopStyleVar();

    m_channelMask = (m_channelMask & ~availableChannelMask) | (effectiveChannelMask & availableChannelMask);

    // Color scale slider and button