An horizontal grid layout. More...

#include <Nux/GridHLayout.h>

Inheritance diagram for nux::GridHLayout:

Public Member Functions
	GridHLayout (NUX_FILE_LINE_PROTO)
virtual long	ComputeLayout2 ()
virtual void	GetCompositeList (std::list< Area * > *ViewList)
void	EnablePartialVisibility (bool partial_visibility)
	Control the visibility of elements on the bottom edge.
void	SetChildrenSize (int width, int height)
	Set the size of the grid element.
Size	GetChildrenSize () const
	Get the size of the grid element.
void	ForceChildrenSize (bool force)
	Force the grid elements size.
int	GetNumColumn () const
	Get the number of columns in the grid.
int	GetNumRow () const
	Get the number of rows in the grid.
void	SetHeightMatchContent (bool match_content)
	Make the grid width match the size of its content.
bool	GetHeightMatchContent () const
	Return True if the grid width match the size of its content.
virtual void	ProcessDraw (GraphicsEngine &GfxContext, bool force_draw)
	Draw Element.
Protected Member Functions
int	GetChildPos (Area *child)
Area *	GetChildAtPosition (int pos)
virtual long	DoFocusUp (IEvent &ievent, long TraverseInfo, long ProcessEventInfo)
virtual long	DoFocusDown (IEvent &ievent, long TraverseInfo, long ProcessEventInfo)
virtual long	DoFocusLeft (IEvent &ievent, long TraverseInfo, long ProcessEventInfo)
virtual long	DoFocusRight (IEvent &ievent, long TraverseInfo, long ProcessEventInfo)
virtual Area *	KeyNavIteration (KeyNavDirection direction)

Detailed Description

An horizontal grid layout.

Fills the grid from left to right and going down.

Definition at line 34 of file GridHLayout.h.

Member Function Documentation

void nux::GridHLayout::EnablePartialVisibility ( bool partial_visibility )

Control the visibility of elements on the bottom edge.

Controls how the layout places the elements at its bottom edge.

Parameters:

partial_visibility If True, the layout will position elements at its bottom edge even if they are partially visible.

Definition at line 210 of file GridHLayout.cpp.

  {
    _partial_visibility = partial_visibility;
  }

void nux::GridHLayout::ForceChildrenSize ( bool force )

Force the grid elements size.

Force the grid elements size to be the one provided by SetChildrenSize.

Definition at line 225 of file GridHLayout.cpp.

  {
    _force_children_size = force;
  }

Size nux::GridHLayout::GetChildrenSize ( ) const

Get the size of the grid element.

Returns:: Size of the grid elements.

Definition at line 220 of file GridHLayout.cpp.

  {
    return _children_size;
  }

void nux::GridHLayout::ProcessDraw	(	GraphicsEngine &	GfxContext,
		bool	force_draw
	)		`[virtual]`

Draw Element.

Draw all elements inside the layout. If force_draw is true then the system requests that all objects redraw themselves completely.

Parameters:

force_draw
TraverseInfo
ProcessEventInfo

Returns:: The state of the Process Event.

Reimplemented from nux::Layout.

Definition at line 419 of file GridHLayout.cpp.

References nux::Area::GetAbsoluteGeometry(), nux::Area::GetGeometry(), nux::Area::GetToplevel(), nux::GraphicsEngine::PopModelViewMatrix(), nux::Layout::ProcessDraw(), and nux::GraphicsEngine::PushModelViewMatrix().

  {
    if (_layout_element_list.size() == 0)
      return;

    std::list<Area *> elements;
    std::list<Area *>::iterator it = _layout_element_list.begin ();

    GfxContext.PushModelViewMatrix(Get2DMatrix());

    Geometry base = GetGeometry();
    Geometry absolute_geometry = GetAbsoluteGeometry();
    Geometry parent_geometry = absolute_geometry;
    Geometry visibility_geometry = absolute_geometry;
    if (GetToplevel())
    {
      parent_geometry = GetToplevel()->GetAbsoluteGeometry();
    }

    visibility_geometry = parent_geometry.Intersect(absolute_geometry);

    GfxContext.PushClippingRectangle(base);

    it = _layout_element_list.begin();

    bool first = false;
    bool last = false;
    for (int j = 0; j < _num_row; j++)
    {
      for (int i = 0; i < _num_column; i++)
      {
        if (it == _layout_element_list.end())
          break;

        if ((*it)->IsVisible() == false)
        {
          ++it;
          continue;
        }

        Geometry it_geo = (*it)->GetAbsoluteGeometry();
        Geometry intersection = visibility_geometry.Intersect(it_geo);

        // Test if the element is inside the Grid before rendering.
        if (!intersection.IsNull())
        {
          if (first == false)
          {
            first = true; // First invisible child.
          }

          int x = base.x + m_h_out_margin + i * (_children_size.width + m_h_in_margin);
          int y = base.y + m_v_out_margin + j * (_children_size.height + m_v_in_margin);

          GfxContext.PushClippingRectangle(Geometry (x, y, _children_size.width, _children_size.height));

          if ((*it)->IsView())
          {
            View *ic = static_cast<View *>(*it);
            ic->ProcessDraw(GfxContext, force_draw);
          }
          else if ((*it)->IsLayout())
          {
            Layout *layout = static_cast<Layout *>(*it);
            layout->ProcessDraw(GfxContext, force_draw);
          }

          GfxContext.PopClippingRectangle();
        }
        else
        {
          if (first)
          {
            // First invisible child. Exit!
            last = true;
          }
        }

        if (first && last)
        {
          // Early exit
          break;
        }

        it++;
      }
      if (first && last)
        break;
    }

    GfxContext.PopClippingRectangle ();
    GfxContext.PopModelViewMatrix ();

    _queued_draw = false;
  }

void nux::GridHLayout::SetChildrenSize	(	int	width,
		int	height
	)

Set the size of the grid element.

Parameters:

width	Width of elements.
height	Height of elements.

Definition at line 215 of file GridHLayout.cpp.

  {
    _children_size = Size (width, height);
  }

void nux::GridHLayout::SetHeightMatchContent ( bool match_content )

Make the grid width match the size of its content.

Parameters:

match_content If True, force the height of the layout to match the height of the content. This can also be achieve if the stretch factor of this layout is set to 0;

Definition at line 240 of file GridHLayout.cpp.

  {
    _height_match_content = match_content;
  }

The documentation for this class was generated from the following files:

Nux/GridHLayout.h
Nux/GridHLayout.cpp

Public Member Functions

Protected Member Functions

Detailed Description

Member Function Documentation