Method drawCurrentFrameIndicator

Gui/DopeSheetView.cpp:1561–1613

* @brief DopeSheetViewPrivate::drawIndicator * * */

 *
 */
void
DopeSheetViewPrivate::drawCurrentFrameIndicator()
{
    running_in_main_thread_and_context(q_ptr);

    computeTimelinePositions();

    int top = zoomContext.toZoomCoordinates(0, 0).y();
    int bottom = zoomContext.toZoomCoordinates(q_ptr->width() - 1,
                                               q_ptr->height() - 1).y();
    int currentFrame = timeline->currentFrame();

    // Retrieve settings for drawing
    SettingsPtr settings = appPTR->getCurrentSettings();
    double colorR, colorG, colorB;
    settings->getTimelinePlayheadColor(&colorR, &colorG, &colorB);

    // Perform drawing
    {
        GLProtectAttrib a(GL_CURRENT_BIT | GL_HINT_BIT | GL_ENABLE_BIT |
                          GL_LINE_BIT | GL_POLYGON_BIT | GL_COLOR_BUFFER_BIT);

        glEnable(GL_BLEND);
        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

        glEnable(GL_LINE_SMOOTH);
        glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);

        glColor4f(colorR, colorG, colorB, 1.f);
        glLineWidth(1. * _screenPixelRatio);
        glBegin(GL_LINES);
        glVertex2f(currentFrame, top);
        glVertex2f(currentFrame, bottom);
        glEnd();

        glEnable(GL_POLYGON_SMOOTH);
        glHint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);

        // Draw top polygon
        //        glBegin(GL_POLYGON);
        //        glVertex2f(currentTime - polyHalfWidth, top);
        //        glVertex2f(currentTime + polyHalfWidth, top);
        //        glVertex2f(currentTime, top - polyHeight);
        //        glEnd();

        // Draw bottom polygon
        glBegin(GL_POLYGON);
        glVertex2f( currentFrameIndicatorBottomPoly.at(0).x(), currentFrameIndicatorBottomPoly.at(0).y() );
        glVertex2f( currentFrameIndicatorBottomPoly.at(1).x(), currentFrameIndicatorBottomPoly.at(1).y() );
        glVertex2f( currentFrameIndicatorBottomPoly.at(2).x(), currentFrameIndicatorBottomPoly.at(2).y() );
        glEnd();
    }
} // DopeSheetViewPrivate::drawCurrentFrameIndicator

/**
 * @brief DopeSheetViewPrivate::drawSelectionRect