libcore/MouseButtonState.h

   1 // Thatcher Ulrich <tu@tulrich.com> 2003
   2
   3 // This source code has been donated to the Public Domain.  Do
   4 // whatever you want with it.
   5
   6
   7 #ifndef GNASH_MOUSE_BUTTON_STATE_H
   8 #define GNASH_MOUSE_BUTTON_STATE_H
   9
  10 #include "InteractiveObject.h"
  11
  12 // Forward declarations
  13 namespace gnash {
  14         class MovieClip;
  15 }
  16
  17 namespace gnash {
  18
  19 /// Helper to generate mouse events, given mouse state & history.
  20 struct MouseButtonState
  21 {
  22
  23 public:
  24
  25         /// entity that currently owns the mouse pointer
  26         InteractiveObject* activeEntity;
  27
  28         /// what's underneath the mouse right now
  29         InteractiveObject* topmostEntity;
  30
  31         /// previous state of mouse button
  32         bool wasDown;
  33
  34         /// current state of mouse button
  35         bool isDown;
  36
  37         /// whether mouse was inside the active_entity last frame
  38         bool wasInsideActiveEntity;
  39
  40         MouseButtonState()
  41                 :
  42         activeEntity(nullptr),
  43         topmostEntity(nullptr),
  44                 wasDown(false),
  45                 isDown(false),
  46                 wasInsideActiveEntity(false)
  47         {
  48         }
  49
  50         /// Mark reachable objects (active and topmost entities)
  51         void markReachableResources() const {
  52                 if (activeEntity) activeEntity->setReachable();
  53                 if (topmostEntity) topmostEntity->setReachable();
  54         }
  55 };
  56
  57 }       // end namespace gnash
  58
  59
  60 #endif // GNASH_MOUSE_BUTTON_STATE_H
  61
  62
  63 // Local Variables:
  64 // mode: C++
  65 // c-basic-offset: 8
  66 // tab-width: 8
  67 // indent-tabs-mode: nil
  68 // End: