129 lines
4.6 KiB
C
129 lines
4.6 KiB
C
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///////////////////////////////////////////////////////////////////////////////
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// Name: wx/persist/toplevel.h
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// Purpose: persistence support for wxTLW
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// Author: Vadim Zeitlin
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// Created: 2009-01-19
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// Copyright: (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_PERSIST_TOPLEVEL_H_
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#define _WX_PERSIST_TOPLEVEL_H_
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#include "wx/persist/window.h"
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#include "wx/toplevel.h"
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#include "wx/display.h"
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// ----------------------------------------------------------------------------
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// string constants used by wxPersistentTLW
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// ----------------------------------------------------------------------------
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// we use just "Window" to keep configuration files and such short, there
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// should be no confusion with wxWindow itself as we don't have persistent
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// windows, just persistent controls which have their own specific kind strings
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#define wxPERSIST_TLW_KIND "Window"
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// names for various persistent options
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#define wxPERSIST_TLW_X "x"
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#define wxPERSIST_TLW_Y "y"
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#define wxPERSIST_TLW_W "w"
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#define wxPERSIST_TLW_H "h"
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#define wxPERSIST_TLW_MAXIMIZED "Maximized"
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#define wxPERSIST_TLW_ICONIZED "Iconized"
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// ----------------------------------------------------------------------------
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// wxPersistentTLW: supports saving/restoring window position and size as well
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// as maximized/iconized/restore state
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// ----------------------------------------------------------------------------
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class wxPersistentTLW : public wxPersistentWindow<wxTopLevelWindow>
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{
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public:
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wxPersistentTLW(wxTopLevelWindow *tlw)
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: wxPersistentWindow<wxTopLevelWindow>(tlw)
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{
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}
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virtual void Save() const
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{
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const wxTopLevelWindow * const tlw = Get();
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const wxPoint pos = tlw->GetScreenPosition();
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SaveValue(wxPERSIST_TLW_X, pos.x);
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SaveValue(wxPERSIST_TLW_Y, pos.y);
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// notice that we use GetSize() here and not GetClientSize() because
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// the latter doesn't return correct results for the minimized windows
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// (at least not under Windows)
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//
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// of course, it shouldn't matter anyhow usually, the client size
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// should be preserved as well unless the size of the decorations
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// changed between the runs
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const wxSize size = tlw->GetSize();
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SaveValue(wxPERSIST_TLW_W, size.x);
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SaveValue(wxPERSIST_TLW_H, size.y);
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SaveValue(wxPERSIST_TLW_MAXIMIZED, tlw->IsMaximized());
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SaveValue(wxPERSIST_TLW_ICONIZED, tlw->IsIconized());
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}
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virtual bool Restore()
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{
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wxTopLevelWindow * const tlw = Get();
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long x wxDUMMY_INITIALIZE(-1),
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y wxDUMMY_INITIALIZE(-1),
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w wxDUMMY_INITIALIZE(-1),
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h wxDUMMY_INITIALIZE(-1);
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const bool hasPos = RestoreValue(wxPERSIST_TLW_X, &x) &&
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RestoreValue(wxPERSIST_TLW_Y, &y);
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const bool hasSize = RestoreValue(wxPERSIST_TLW_W, &w) &&
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RestoreValue(wxPERSIST_TLW_H, &h);
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if ( hasPos )
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{
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// to avoid making the window completely invisible if it had been
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// shown on a monitor which was disconnected since the last run
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// (this is pretty common for notebook with external displays)
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//
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// NB: we should allow window position to be (slightly) off screen,
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// it's not uncommon to position the window so that its upper
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// left corner has slightly negative coordinate
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if ( wxDisplay::GetFromPoint(wxPoint(x, y)) != wxNOT_FOUND ||
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(hasSize && wxDisplay::GetFromPoint(
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wxPoint(x + w, y + h)) != wxNOT_FOUND) )
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{
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tlw->Move(x, y, wxSIZE_ALLOW_MINUS_ONE);
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}
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//else: should we try to adjust position/size somehow?
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}
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if ( hasSize )
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tlw->SetSize(w, h);
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// note that the window can be both maximized and iconized
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bool maximized;
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if ( RestoreValue(wxPERSIST_TLW_MAXIMIZED, &maximized) && maximized )
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tlw->Maximize();
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bool iconized;
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if ( RestoreValue(wxPERSIST_TLW_ICONIZED, &iconized) && iconized )
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tlw->Iconize();
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// the most important property of the window that we restore is its
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// size, so disregard the value of hasPos here
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return hasSize;
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}
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virtual wxString GetKind() const { return wxPERSIST_TLW_KIND; }
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};
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inline wxPersistentObject *wxCreatePersistentObject(wxTopLevelWindow *tlw)
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{
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return new wxPersistentTLW(tlw);
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}
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#endif // _WX_PERSIST_TOPLEVEL_H_
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