vcl/win/dtrans/globals.hxx

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  19 #pragma once
  20
  21 #include <sal/config.h>
  22
  23 #include <com/sun/star/uno/Reference.hxx>
  24 #include <osl/mutex.hxx>
  25
  26 namespace com::sun::star::datatransfer
  27 {
  28 class XTransferable;
  29 }
  30
  31 #include <wtypes.h>
  32 #include <sal/types.h>
  33
  34 // This maps key states as occur as parameter, e.g. in IDropTarget::DragEnter,
  35 // IDropSource::QueryContinueDrag, to actions as are declared in
  36 // css::datatransfer::dnd::DNDConstants ( ACTION_MOVE etc).
  37 // If the grfKeyState indicates the ALt or right mousebutton then the returned
  38 // values combines all possible actions. This is because those keys and buttons are
  39 // used when the user expect a menu to appear when he drops. The menu then
  40 // contains entries, such as move, copy, link, cancel.
  41 // An odd fact is that the argument grfKeyState in IDropTarget::Drop does not
  42 // contain mouse buttons (winnt 4 SP6). That indicates that the right mouse button
  43 // is not considered relevant in a drag operation. Contrarily the file explorer
  44 // gives that button a special meaning: the user has to select the effect from
  45 // a context menu on drop.
  46 sal_Int8 dndOleKeysToAction(DWORD grfKeyState, sal_Int8 sourceActions);
  47
  48 // The function maps a windows DROPEFFECTs to actions
  49 // ( css::datatransfer::dnd::DNDConstants).
  50 // The argument can be a combination of different DROPEFFECTS,
  51 // In that case the return value is also a combination of the
  52 // appropriate actions.
  53 sal_Int8 dndOleDropEffectsToActions(DWORD dwEffect);
  54
  55 // The function maps actions ( css::datatransfer::dnd::DNDConstants)
  56 // to window DROPEFFECTs.
  57 // The argument can be a combination of different actions
  58 // In that case the return value is also a combination of the
  59 // appropriate DROPEFFECTS.
  60 DWORD dndActionsToDropEffects(sal_Int8 actions);
  61
  62 // If the argument constitutes only one action then it is mapped to the
  63 // corresponding DROPEFFECT otherwise DROPEFFECT_MOVE is returned. This is
  64 // why move is the default effect (no modifiers pressed, or right mouse button
  65 // or Alt).
  66 DWORD dndActionsToSingleDropEffect(sal_Int8 actions);
  67
  68 struct MutexDummy
  69 {
  70     osl::Mutex m_mutex;
  71 };
  72
  73 extern css::uno::Reference<css::datatransfer::XTransferable> g_XTransferable;
  74
  75 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */