minsky::BoundingBox Class Reference

bounding box information (at zoom=1 scale) More...

#include <item.h>

Collaboration diagram for minsky::BoundingBox:

Public Member Functions
void	update (const Item &x)
bool	contains (float x, float y) const
bool	valid () const
float	width () const
float	height () const
float	left () const
float	right () const
float	top () const
float	bottom () const

Private Attributes
float	m_left =0
float	m_right =0
float	m_top
float	m_bottom

Detailed Description

bounding box information (at zoom=1 scale)

Definition at line 82 of file item.h.

Member Function Documentation

bottom()

float minsky::BoundingBox::bottom ( ) const

inline

Definition at line 97 of file item.h.

References m_bottom.

{return m_bottom;}

contains()

bool minsky::BoundingBox::contains ( float  x, float  y  ) const

inline

Definition at line 87 of file item.h.

References m_left, and m_top.

                                          {
      // extend each item by a portradius to solve ticket #903
      return m_left-portRadius<=x && m_right+portRadius>=x && m_top-portRadius<=y && m_bottom+portRadius>=y;
    }

height()

float minsky::BoundingBox::height ( ) const

inline

Definition at line 93 of file item.h.

References m_bottom, and m_top.

{return m_bottom-m_top;}

left()

float minsky::BoundingBox::left ( ) const

inline

Definition at line 94 of file item.h.

References m_left.

{return m_left;}

right()

float minsky::BoundingBox::right ( ) const

inline

Definition at line 95 of file item.h.

References m_right.

{return m_right;}

top()

float minsky::BoundingBox::top ( ) const

inline

Definition at line 96 of file item.h.

References m_top.

{return m_top;}

update()

void minsky::BoundingBox::update

(

const Item &

x

)

Definition at line 46 of file item.cc.

References minsky::Item::draw(), M_PI, minsky::NoteBase::mouseFocus, minsky::Item::onResizeHandles, minsky::Item::rotation(), and minsky::Item::zoomFactor().

Referenced by minsky::IntOp::description(), minsky::Item::ensureBBValid(), minsky::Item::iHeight(), minsky::Item::iWidth(), minsky::IntOp::resize(), minsky::Ravel::resize(), minsky::IntOp::toggleCoupled(), minsky::UserFunction::updateBB(), minsky::DataOp::updateBB(), minsky::GodleyIcon::updateBB(), and minsky::Item::updateBoundingBox().

  {
    const ecolab::cairo::Surface surf
      (cairo_recording_surface_create(CAIRO_CONTENT_COLOR_ALPHA,NULL));
    auto savedMouseFocus=x.mouseFocus;
    x.mouseFocus=false; // do not mark up icon with tooltips etc, which might invalidate this calc
    x.onResizeHandles=false;
    double stashedZf=1;
    if (auto parent=x.group.lock())
      {
        stashedZf=parent->relZoom;
        parent->relZoom/=x.zoomFactor(); // undo any zooming coming from owning group
      }
    try
      {
        const cairo::CairoSave cs(surf.cairo());
        cairo_rotate(surf.cairo(),-x.rotation()*M_PI/180);
        x.draw(surf.cairo());
      }
#ifndef NDEBUG
    catch (const std::exception& e) 
      {cerr<<"illegal exception caught in draw(): "<<e.what()<<endl;}
    catch (...) {cerr<<"illegal exception caught in draw()";}
#else
    catch(...) {}
#endif
    x.mouseFocus=savedMouseFocus;
    if (auto parent=x.group.lock())
      parent->relZoom=stashedZf;
    
    double l,t,w,h;
    cairo_recording_surface_ink_extents(surf.surface(),
                                        &l,&t,&w,&h);
    // note (0,0) is relative to the (x,y) of icon.
    m_left=l;
    m_right=(l+w);
    m_top=t;
    m_bottom=(t+h);
  }

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valid()

bool minsky::BoundingBox::valid ( ) const

inline

Definition at line 91 of file item.h.

References m_left, and m_right.

Referenced by minsky::Item::ensureBBValid().

{return m_left!=m_right;}

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width()

float minsky::BoundingBox::width ( ) const

inline

Definition at line 92 of file item.h.

References m_left, and m_right.

{return m_right-m_left;}

Member Data Documentation

m_bottom

float minsky::BoundingBox::m_bottom

private

Definition at line 84 of file item.h.

Referenced by bottom(), and height().

m_left

float minsky::BoundingBox::m_left =0

private

Definition at line 84 of file item.h.

Referenced by contains(), left(), valid(), and width().

m_right

float minsky::BoundingBox::m_right =0

private

Definition at line 84 of file item.h.

Referenced by right(), valid(), and width().

m_top

float minsky::BoundingBox::m_top

private

Definition at line 84 of file item.h.

Referenced by contains(), height(), and top().

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

• model/item.h
• model/item.cc