Method drawFramebufferCommon

plugins/Cardinal/src/ImGuiWidget.cpp:460–535

}

void ImGuiWidget::drawFramebufferCommon(const Vec& fbSize, const float scaleFactor)
{
    ImGui::SetCurrentContext(imData->context);
    ImGuiIO& io(ImGui::GetIO());

    if (d_isNotEqual(imData->scaleFactor, scaleFactor))
    {
        imData->scaleFactor = scaleFactor;

        ImGuiStyle& style(ImGui::GetStyle());
        new(&style)ImGuiStyle();
        imData->resetStyle();

        if (! imData->fontGenerated)
        {
            imData->originalScaleFactor = scaleFactor;
            imData->generateFontIfNeeded();
        }
        else
        {
            io.FontGlobalScale = scaleFactor / imData->originalScaleFactor;
        }
    }

#if defined(DGL_USE_OPENGL3)
    // TODO?
#else
    glMatrixMode(GL_PROJECTION);
    glPushMatrix();
    glLoadIdentity();
    glOrtho(0.0, box.size.x * scaleFactor, box.size.y * scaleFactor, 0.0, -1.0, 1.0);
    glViewport(0.0, 0.0, fbSize.x, fbSize.y);
    glMatrixMode(GL_MODELVIEW);
    glPushMatrix();
    glLoadIdentity();

    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
    glClear(GL_COLOR_BUFFER_BIT);
#endif

    io.DisplaySize = ImVec2(box.size.x * scaleFactor, box.size.y * scaleFactor);
    io.DisplayFramebufferScale = ImVec2(fbSize.x / (box.size.x * scaleFactor), fbSize.y / (box.size.y * scaleFactor));

    if (!imData->created)
    {
#if defined(DGL_USE_OPENGL3)
        ImGui_ImplOpenGL3_Init();
#else
        ImGui_ImplOpenGL2_Init();
#endif
        imData->created = true;
    }

    const double time = glfwGetTime();
    io.DeltaTime = time - imData->lastFrameTime;
    imData->lastFrameTime = time;

#if defined(DGL_USE_OPENGL3)