Method paintGL

Gui/DopeSheetView.cpp:3267–3341

* @brief DopeSheetView::paintGL * * */

 *
 */
void
DopeSheetView::paintGL()
{
    running_in_main_thread_and_context(this);

    if ( !appPTR->isOpenGLLoaded() ) {
        return;
    }


    glCheckError();

    if (_imp->zoomContext.factor() <= 0) {
        return;
    }

    {
        double screenPixelRatio = getScreenPixelRatio();
        if (screenPixelRatio != _imp->_screenPixelRatio) {
            _imp->_screenPixelRatio = screenPixelRatio;
            _imp->_textFont.reset(new QFont(appFont, appFontSize * screenPixelRatio));
        }
    }
    assert(_imp->_textFont);

    double zoomLeft, zoomRight, zoomBottom, zoomTop;
    zoomLeft = _imp->zoomContext.left();
    zoomRight = _imp->zoomContext.right();
    zoomBottom = _imp->zoomContext.bottom();
    zoomTop = _imp->zoomContext.top();

    // Retrieve the appropriate settings for drawing
    SettingsPtr settings = appPTR->getCurrentSettings();
    double bgR, bgG, bgB;
    settings->getDopeSheetEditorBackgroundColor(&bgR, &bgG, &bgB);

    if ( (zoomLeft == zoomRight) || (zoomTop == zoomBottom) ) {
        glClearColor(bgR, bgG, bgB, 1.);
        glClear(GL_COLOR_BUFFER_BIT);

        return;
    }

    {
        GLProtectAttrib a(GL_TRANSFORM_BIT | GL_COLOR_BUFFER_BIT);
        GLProtectMatrix p(GL_PROJECTION);

        glLoadIdentity();
        glOrtho(zoomLeft, zoomRight, zoomBottom, zoomTop, 1, -1);

        GLProtectMatrix m(GL_MODELVIEW);

        glLoadIdentity();

        glCheckError();

        glClearColor(bgR, bgG, bgB, 1.);
        glClear(GL_COLOR_BUFFER_BIT);