C++ URect::get_top_left方法代码示例

//---------------------------------------------------------------------------------------
void TopLevelCaretPositioner::layout_caret(Caret* pCaret, DocCursor* pCursor)
{
    m_pCursor = pCursor;
    m_state = m_pCursor->get_state();

    ImoId id = m_state.get_parent_level_id();
    GmoBox* pBox = m_pGModel->get_box_for_imo(id);

    URect pos;
    if (pBox)
        pos = pBox->get_bounds();
    else
    {
        //at end of document
        pBox = get_box_for_last_element();
        if (pBox)
        {
            pos.set_top_left( UPoint(pBox->get_left(), pBox->get_bottom()) );
            pos.set_height(1000.0f);
            pos.set_width(1000.0f);
        }
        else
        {
            //empty document
            pos = URect(0.0f, 0.0f, 1000.0f, 1000.0f);
        }
    }

    pCaret->set_type(Caret::k_top_level);
    pCaret->set_top_level_box(pos);
    pCaret->set_position( pos.get_top_left() );
    pCaret->set_size( USize(pos.get_width(), pos.get_height()) );
}

//---------------------------------------------------------------------------------------
int GmoCompositeShape::add(GmoShape* pShape)
{
    m_components.push_back(pShape);

	if (m_components.size() == 1)
	{
		//copy bounds
		m_origin = pShape->get_origin();
		m_size = pShape->get_size();
	}
	else
	{
	    //TODO: Note from LenMus:
//        lmCompositeShape: the selection rectangle should not be the boundling rectangle
//        but each rectangle of each component shape. This will save the need to define
//        specific shapes just to override selection rectangle. i.i. metronome marks

		//compute new selection rectangle by union of individual selection rectangles
		URect bbox = get_bounds();
		bbox.Union(pShape->get_bounds());
		m_origin = bbox.get_top_left();
		m_size.width = bbox.get_width();
		m_size.height = bbox.get_height();
	}

	//return index to added shape
	return (int)m_components.size() - 1;
}

//---------------------------------------------------------------------------------------
void ScoreCaretPositioner::caret_on_pointed_object(Caret* pCaret)
{
    URect bounds = get_bounds_for_imo( m_spState->id(), m_spState->staff() );
    bounds.x -= tenths_to_logical(1);
    set_caret_y_pos_and_height(&bounds, m_spState->id(), m_spState->staff());

    pCaret->set_type(Caret::k_line);
    pCaret->set_position( bounds.get_top_left() );
    pCaret->set_size( USize(bounds.get_width(), bounds.get_height()) );
    set_caret_timecode(pCaret);
}

//---------------------------------------------------------------------------------------
void GmoCompositeShape::recompute_bounds()
{
 	URect bbox;
    std::list<GmoShape*>::iterator it;
    for (it = m_components.begin(); it != m_components.end(); ++it)
		bbox.Union((*it)->get_bounds());

	m_origin = bbox.get_top_left();
	m_size.width = bbox.get_width();
	m_size.height = bbox.get_height();
}

//---------------------------------------------------------------------------------------
void ScoreCaretPositioner::caret_on_empty_timepos(Caret* pCaret)
{
    //cursor is between two staffobjs, on a free time position.
    //Place caret between both staffobjs. Interpolate position based on cursor time

    //get info for current ref. object
    ImoId refId = m_pScoreCursor->staffobj_id_internal();
    int refStaff = m_pScoreCursor->ref_obj_staff();

    //get info for prev object
    SpElementCursorState spState = m_pScoreCursor->get_state();
    m_pScoreCursor->move_prev();
    ImoId prevId = m_pScoreCursor->id();
    int prevStaff = m_pScoreCursor->staff();
    TimeUnits prevTime = m_pScoreCursor->time();
    m_pScoreCursor->restore_state(spState);

    URect boundsPrev = get_bounds_for_imo(prevId, prevStaff);
    URect bounds = get_bounds_for_imo(refId, refStaff);

#if 1
    //interpolate position
    //TODO: linear interpolation is wrong. This has to be changed to use time-grid
    TimeUnits time1 = prevTime;
    TimeUnits time2 = m_spState->time();
    TimeUnits time3 = m_spState->ref_obj_time();
    LUnits xIncr = bounds.x - boundsPrev.x;     // Ax = x3-x1
    bounds.x = boundsPrev.x +
        (xIncr * float((time2 - time1) / (time3 - time1)) );
#else
    //determine x position based on TimeGridTable
    TimeUnits time = m_pScoreCursor->time();
    int iSystem = m_pGModel->get_system_for(m_pScore->get_id(),
                                            m_pScoreCursor->instrument(),
                                            m_pScoreCursor->measure(),
                                            time);
    m_pBoxSystem = m_pGModel->get_system_box(iSystem);
    TimeGridTable* pTimeGrid = m_pBoxSystem->get_time_grid_table();
    bounds.x = pTimeGrid->get_x_for_time(time);
#endif

    //set caret
    set_caret_y_pos_and_height(&bounds, prevId, prevStaff);

    pCaret->set_type(Caret::k_line);
    pCaret->set_position( bounds.get_top_left() );
    pCaret->set_size( USize(bounds.get_width(), bounds.get_height()) );
    set_caret_timecode(pCaret);
}

//---------------------------------------------------------------------------------------
void ScoreCaretPositioner::caret_at_start_of_score(Caret* pCaret)
{
    //Cursor is at end of score but score is empty.
    //Place cursor at start of first system

    //get shape for first system
    DocCursorState state = m_pDocCursor->get_state();
    ImoId scoreId = state.get_parent_level_id();

    //GmoShapeStaff* pShape = m_pGModel->get_shape_for_first_staff_in_first_system(scoreId);
    GmoBoxScorePage* pBSP =
            static_cast<GmoBoxScorePage*>( m_pGModel->get_box_for_imo(scoreId) );
    m_pBoxSystem = dynamic_cast<GmoBoxSystem*>(pBSP->get_child_box(0));
    GmoShapeStaff* pShape = (m_pBoxSystem ? m_pBoxSystem->get_staff_shape(0) : NULL);

    URect bounds;
    if (pShape)
    {
        bounds = pShape->get_bounds();
        bounds.x += m_pMeter->tenths_to_logical(20, 0, 0);
    }
    else
    {
        //score totally empty. No staff displayed! Position cursors at start of page
        //TODO
        bounds = URect(0.0f, 0.0f, 20.0f, 700.0f);
//        uPos.y = pBPage->GetYTop();
//        uPos.x = pBPage->GetXLeft() + pScore->tenths_to_logical(20);
    }
    set_caret_y_pos_and_height(&bounds, k_no_imoid, 0);


    pCaret->set_type(Caret::k_line);
    pCaret->set_position( bounds.get_top_left() );
    pCaret->set_size( USize(bounds.get_width(), bounds.get_height()) );
    set_caret_timecode(pCaret);
}