X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a536e411022b21280532c9daadc806a437fbb4c6..c944775f72435d2c0493113e05445898ab8baf1b:/src/msw/display.cpp?ds=sidebyside diff --git a/src/msw/display.cpp b/src/msw/display.cpp index cd5548c708..e5d3247e08 100644 --- a/src/msw/display.cpp +++ b/src/msw/display.cpp @@ -1,11 +1,12 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: display.cpp +// Name: src/msw/display.cpp // Purpose: MSW Implementation of wxDisplay class -// Author: Royce Mitchell III -// Modified by: +// Author: Royce Mitchell III, Vadim Zeitlin +// Modified by: Ryan Norton (IsPrimary override) // Created: 06/21/02 // RCS-ID: $Id$ -// Copyright: (c) wxWindows team +// Copyright: (c) wxWidgets team +// Copyright: (c) 2002-2006 wxWidgets team // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -17,10 +18,6 @@ // headers // --------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "display.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -30,203 +27,1003 @@ #if wxUSE_DISPLAY +#include "wx/display.h" + #ifndef WX_PRECOMP - #include "wx/dynarray.h" + #include "wx/dynarray.h" + #include "wx/app.h" + #include "wx/frame.h" #endif -#include "wx/display.h" +#include "wx/dynload.h" +#include "wx/sysopt.h" + +#include "wx/display_impl.h" +#include "wx/msw/wrapwin.h" +#include "wx/msw/missing.h" -// the following define is necessary to access the multi-monitor function -// declarations in a manner safe to use w/ Windows 95 -// JACS: not used for now until we're clear about the legality -// of distributing multimon.h. Meanwhile you can download the file -// yourself from: -// http://www.microsoft.com/msj/0697/monitor/monitortextfigs.htm#fig4 +// define this to use DirectDraw for display mode switching: this is disabled +// by default because ddraw.h is now always available and also it's not really +// clear what are the benefits of using DirectDraw compared to the standard API -#if 0 -#define COMPILE_MULTIMON_STUBS -#include "wx/msw/multimon.h" +#if !defined(wxUSE_DIRECTDRAW) + #define wxUSE_DIRECTDRAW 0 #endif -// --------------------------------------------------------------------------- -// constants -// --------------------------------------------------------------------------- +#ifndef __WXWINCE__ + // Older versions of windef.h don't define HMONITOR. Unfortunately, we + // can't directly test whether HMONITOR is defined or not in windef.h as + // it's not a macro but a typedef, so we test for an unrelated symbol which + // is only defined in winuser.h if WINVER >= 0x0500 + #if !defined(HMONITOR_DECLARED) && !defined(MNS_NOCHECK) + DECLARE_HANDLE(HMONITOR); + typedef BOOL(CALLBACK * MONITORENUMPROC )(HMONITOR, HDC, LPRECT, LPARAM); + typedef struct tagMONITORINFO + { + DWORD cbSize; + RECT rcMonitor; + RECT rcWork; + DWORD dwFlags; + } MONITORINFO, *LPMONITORINFO; + typedef struct tagMONITORINFOEX : public tagMONITORINFO + { + TCHAR szDevice[CCHDEVICENAME]; + } MONITORINFOEX, *LPMONITORINFOEX; + #define MONITOR_DEFAULTTONULL 0x00000000 + #define MONITOR_DEFAULTTOPRIMARY 0x00000001 + #define MONITOR_DEFAULTTONEAREST 0x00000002 + #define MONITORINFOF_PRIMARY 0x00000001 + #define HMONITOR_DECLARED + #endif +#endif // !__WXWINCE__ -// --------------------------------------------------------------------------- -// private functions -// --------------------------------------------------------------------------- +#if wxUSE_DIRECTDRAW + #include -void wxmswInitDisplayRectArray(); + // we don't want to link with ddraw.lib which contains the real + // IID_IDirectDraw2 definition + const GUID wxIID_IDirectDraw2 = + { 0xB3A6F3E0, 0x2B43, 0x11CF, { 0xA2,0xDE,0x00,0xAA,0x00,0xB9,0x33,0x56 } }; +#endif // wxUSE_DIRECTDRAW // ---------------------------------------------------------------------------- -// private classes +// typedefs for dynamically loaded Windows functions // ---------------------------------------------------------------------------- -class wxmswDisplayInfo; +typedef LONG (WINAPI *ChangeDisplaySettingsEx_t)(LPCTSTR lpszDeviceName, + LPDEVMODE lpDevMode, + HWND hwnd, + DWORD dwFlags, + LPVOID lParam); -WX_DECLARE_OBJARRAY(wxmswDisplayInfo, wxmswDisplayInfoArray); +#if wxUSE_DIRECTDRAW +typedef BOOL (PASCAL *DDEnumExCallback_t)(GUID *pGuid, + LPTSTR driverDescription, + LPTSTR driverName, + LPVOID lpContext, + HMONITOR hmon); -class wxmswDisplayInfo +typedef HRESULT (WINAPI *DirectDrawEnumerateEx_t)(DDEnumExCallback_t lpCallback, + LPVOID lpContext, + DWORD dwFlags); + +typedef HRESULT (WINAPI *DirectDrawCreate_t)(GUID *lpGUID, + LPDIRECTDRAW *lplpDD, + IUnknown *pUnkOuter); +#endif // wxUSE_DIRECTDRAW + +typedef BOOL (WINAPI *EnumDisplayMonitors_t)(HDC,LPCRECT,MONITORENUMPROC,LPARAM); +typedef HMONITOR (WINAPI *MonitorFromPoint_t)(POINT,DWORD); +typedef HMONITOR (WINAPI *MonitorFromWindow_t)(HWND,DWORD); +typedef BOOL (WINAPI *GetMonitorInfo_t)(HMONITOR,LPMONITORINFO); + +#ifndef __WXWINCE__ +// emulation of ChangeDisplaySettingsEx() for Win95 +LONG WINAPI ChangeDisplaySettingsExForWin95(LPCTSTR WXUNUSED(lpszDeviceName), + LPDEVMODE lpDevMode, + HWND WXUNUSED(hwnd), + DWORD dwFlags, + LPVOID WXUNUSED(lParam)) { -public: - HMONITOR m_hmon; - DISPLAY_DEVICE m_dd; + return ::ChangeDisplaySettings(lpDevMode, dwFlags); +} +#endif // !__WXWINCE__ + +// ---------------------------------------------------------------------------- +// display information classes +// ---------------------------------------------------------------------------- + +struct wxDisplayInfo +{ + wxDisplayInfo(HMONITOR hmon = NULL) + { + m_hmon = hmon; + m_flags = (DWORD)-1; + } + + virtual ~wxDisplayInfo() { } + + + // use GetMonitorInfo() to fill in all of our fields if needed (i.e. if it + // hadn't been done before) + void Initialize(); + + + // handle of this monitor used by MonitorXXX() functions, never NULL + HMONITOR m_hmon; + + // the entire area of this monitor in virtual screen coordinates wxRect m_rect; - int m_depth; + + // the work or client area, i.e. the area available for the normal windows + wxRect m_rectClient; + + // the display device name for this monitor, empty initially and retrieved + // on demand by DoGetName() + wxString m_devName; + + // the flags of this monitor, also used as initialization marker: if this + // is -1, GetMonitorInfo() hadn't been called yet + DWORD m_flags; }; -wxmswDisplayInfoArray* g_wxmswDisplayInfoArray = 0; +WX_DEFINE_ARRAY_PTR(wxDisplayInfo *, wxDisplayInfoArray); + +// ---------------------------------------------------------------------------- +// common base class for all Win32 wxDisplayImpl versions +// ---------------------------------------------------------------------------- -#include // this is a magic incantation which must be done! -WX_DEFINE_OBJARRAY(wxmswDisplayInfoArray); +class wxDisplayImplWin32Base : public wxDisplayImpl +{ +public: + wxDisplayImplWin32Base(unsigned n, wxDisplayInfo& info) + : wxDisplayImpl(n), + m_info(info) + { + } -// =========================================================================== -// implementation -// =========================================================================== + virtual wxRect GetGeometry() const; + virtual wxRect GetClientArea() const; + virtual wxString GetName() const; + virtual bool IsPrimary() const; -BOOL CALLBACK wxmswMonitorEnumProc ( - HMONITOR hMonitor, // handle to display monitor - HDC hdcMonitor, // handle to monitor-appropriate device context - LPRECT lprcMonitor, // pointer to monitor intersection rectangle - LPARAM dwData // data passed from EnumDisplayMonitors -) + virtual wxVideoMode GetCurrentMode() const; + +protected: + // convert a DEVMODE to our wxVideoMode + static wxVideoMode ConvertToVideoMode(const DEVMODE& dm) + { + // note that dmDisplayFrequency may be 0 or 1 meaning "standard one" + // and although 0 is ok for us we don't want to return modes with 1hz + // refresh + return wxVideoMode(dm.dmPelsWidth, + dm.dmPelsHeight, + dm.dmBitsPerPel, + dm.dmDisplayFrequency > 1 ? dm.dmDisplayFrequency : 0); + } + + wxDisplayInfo& m_info; +}; + +// ---------------------------------------------------------------------------- +// common base class for all Win32 wxDisplayFactory versions +// ---------------------------------------------------------------------------- + +// functions dynamically bound by wxDisplayFactoryWin32Base::Initialize() +static MonitorFromPoint_t gs_MonitorFromPoint = NULL; +static MonitorFromWindow_t gs_MonitorFromWindow = NULL; +static GetMonitorInfo_t gs_GetMonitorInfo = NULL; + +class wxDisplayFactoryWin32Base : public wxDisplayFactory { - wxmswDisplayInfo* info = new wxmswDisplayInfo(); - info->m_hmon = hMonitor; - info->m_rect.SetX ( lprcMonitor->left ); - info->m_rect.SetY ( lprcMonitor->top ); - info->m_rect.SetWidth ( lprcMonitor->right - lprcMonitor->left ); - info->m_rect.SetHeight ( lprcMonitor->bottom - lprcMonitor->top ); - // now add this monitor to the array - g_wxmswDisplayInfoArray->Add ( info ); +public: + virtual ~wxDisplayFactoryWin32Base(); - return TRUE; // continue the enumeration -} + bool IsOk() const { return !m_displays.empty(); } + + virtual unsigned GetCount() { return unsigned(m_displays.size()); } + virtual int GetFromPoint(const wxPoint& pt); + virtual int GetFromWindow(const wxWindow *window); + +protected: + // ctor checks if the current system supports multimon API and dynamically + // bind the functions we need if this is the case and sets + // ms_supportsMultimon if they're available + wxDisplayFactoryWin32Base(); + + // delete all m_displays elements: can be called from the derived class + // dtor if it is important to do this before destroying it (as in + // wxDisplayFactoryDirectDraw case), otherwise will be done by our dtor + void Clear(); + + // find the monitor corresponding to the given handle, return wxNOT_FOUND + // if not found + int FindDisplayFromHMONITOR(HMONITOR hmon) const; + + + // flag indicating whether gs_MonitorXXX functions are available + static int ms_supportsMultimon; + + // the array containing information about all available displays, should be + // filled by the derived class ctors + wxDisplayInfoArray m_displays; + + + DECLARE_NO_COPY_CLASS(wxDisplayFactoryWin32Base) +}; + +// ---------------------------------------------------------------------------- +// wxDisplay implementation using Windows multi-monitor support functions +// ---------------------------------------------------------------------------- -class wxmswDisplayModule : public wxModule +class wxDisplayImplMultimon : public wxDisplayImplWin32Base { - DECLARE_DYNAMIC_CLASS(wxmswDisplayModule) public: - wxmswDisplayModule() {} - bool OnInit(); - void OnExit(); + wxDisplayImplMultimon(unsigned n, wxDisplayInfo& info) + : wxDisplayImplWin32Base(n, info) + { + } + + virtual wxArrayVideoModes GetModes(const wxVideoMode& mode) const; + virtual bool ChangeMode(const wxVideoMode& mode); + +private: + DECLARE_NO_COPY_CLASS(wxDisplayImplMultimon) +}; + +class wxDisplayFactoryMultimon : public wxDisplayFactoryWin32Base +{ +public: + wxDisplayFactoryMultimon(); + + virtual wxDisplayImpl *CreateDisplay(unsigned n); + +private: + // EnumDisplayMonitors() callback + static BOOL CALLBACK MultimonEnumProc(HMONITOR hMonitor, + HDC hdcMonitor, + LPRECT lprcMonitor, + LPARAM dwData); + + + // add a monitor description to m_displays array + void AddDisplay(HMONITOR hMonitor, LPRECT lprcMonitor); }; -IMPLEMENT_DYNAMIC_CLASS(wxmswDisplayModule, wxModule) +// ---------------------------------------------------------------------------- +// wxDisplay implementation using DirectDraw +// ---------------------------------------------------------------------------- + +#if wxUSE_DIRECTDRAW -bool wxmswDisplayModule::OnInit() +struct wxDisplayInfoDirectDraw : wxDisplayInfo { - g_wxmswDisplayInfoArray = new wxmswDisplayInfoArray(); - if ( !g_wxmswDisplayInfoArray ) + wxDisplayInfoDirectDraw(const GUID& guid, HMONITOR hmon, LPTSTR name) + : wxDisplayInfo(hmon), + m_guid(guid) { - wxFAIL_MSG(wxT("Couldn't allocate array for display information")); - return FALSE; + m_pDD2 = NULL; + m_devName = name; } - // Royce3: I'm assuming that the monitor's are enumerated in the same - // order as the calls to EnumDisplayDevices below. We shall soon see - // if that assumption is correct. - if ( !EnumDisplayMonitors ( NULL, NULL, wxmswMonitorEnumProc, 0 ) ) - wxLogLastError(wxT("EnumDisplayMonitors")); + virtual ~wxDisplayInfoDirectDraw() + { + if ( m_pDD2 ) + m_pDD2->Release(); + } + + + // IDirectDraw object used to control this display, may be NULL + IDirectDraw2 *m_pDD2; - size_t iDevNum = 0, count = g_wxmswDisplayInfoArray->Count(); - while ( iDevNum < count ) + // DirectDraw GUID for this display, only valid when using DirectDraw + const GUID m_guid; + + + DECLARE_NO_COPY_CLASS(wxDisplayInfoDirectDraw) +}; + +class wxDisplayImplDirectDraw : public wxDisplayImplWin32Base +{ +public: + wxDisplayImplDirectDraw(unsigned n, wxDisplayInfo& info, IDirectDraw2 *pDD2) + : wxDisplayImplWin32Base(n, info), + m_pDD2(pDD2) { - wxmswDisplayInfo& info = (*g_wxmswDisplayInfoArray)[iDevNum]; + m_pDD2->AddRef(); + } + + virtual ~wxDisplayImplDirectDraw() + { + m_pDD2->Release(); + } + + virtual wxArrayVideoModes GetModes(const wxVideoMode& mode) const; + virtual bool ChangeMode(const wxVideoMode& mode); - // MSDN: Before calling EnumDisplayDevices, you must initialize the cb - // member of DISPLAY_DEVICE to the size, in bytes, of DISPLAY_DEVICE - info.m_dd.cb = sizeof(info.m_dd); +private: + IDirectDraw2 *m_pDD2; - if ( !EnumDisplayDevices ( NULL, iDevNum, &info.m_dd, 0 ) ) - wxLogLastError(wxT("EnumDisplayDevices")); + DECLARE_NO_COPY_CLASS(wxDisplayImplDirectDraw) +}; + +class wxDisplayFactoryDirectDraw : public wxDisplayFactoryWin32Base +{ +public: + wxDisplayFactoryDirectDraw(); + virtual ~wxDisplayFactoryDirectDraw(); + + virtual wxDisplayImpl *CreateDisplay(unsigned n); + +private: + // callback used with DirectDrawEnumerateEx() + static BOOL WINAPI DDEnumExCallback(GUID *pGuid, + LPTSTR driverDescription, + LPTSTR driverName, + LPVOID lpContext, + HMONITOR hmon); + + // add a monitor description to m_displays array + void AddDisplay(const GUID& guid, HMONITOR hmon, LPTSTR name); + + + // ddraw.dll + wxDynamicLibrary m_dllDDraw; + + // dynamically resolved DirectDrawCreate() + DirectDrawCreate_t m_pfnDirectDrawCreate; + + DECLARE_NO_COPY_CLASS(wxDisplayFactoryDirectDraw) +}; - // get this display's Depth - DEVMODE devmode; - memset ( &devmode, 0, sizeof(devmode) ); +#endif // wxUSE_DIRECTDRAW - // MSDN: Before calling EnumDisplaySettings, set the dmSize member to - // sizeof(DEVMODE), and set the dmDriverExtra member to indicate the size, - // in bytes, of the additional space available to receive private - // driver-data. - devmode.dmSize = sizeof(devmode); - devmode.dmDriverExtra = 0; - if ( !EnumDisplaySettings ( info.m_dd.DeviceName, ENUM_CURRENT_SETTINGS, &devmode ) ) +// ============================================================================ +// common classes implementation +// ============================================================================ + +// ---------------------------------------------------------------------------- +// wxDisplay +// ---------------------------------------------------------------------------- + +/* static */ wxDisplayFactory *wxDisplay::CreateFactory() +{ + // we have 2 implementations for modern Windows: one using standard Win32 + // and another using DirectDraw, the choice between them is done using a + // system option + +#if wxUSE_DIRECTDRAW + if ( wxSystemOptions::GetOptionInt(_T("msw.display.directdraw")) ) + { + wxDisplayFactoryDirectDraw *factoryDD = new wxDisplayFactoryDirectDraw; + if ( factoryDD->IsOk() ) + return factoryDD; + + delete factoryDD; + } +#endif // wxUSE_DIRECTDRAW + + wxDisplayFactoryMultimon *factoryMM = new wxDisplayFactoryMultimon; + if ( factoryMM->IsOk() ) + return factoryMM; + + delete factoryMM; + + + // finally fall back to a stub implementation if all else failed (Win95?) + return new wxDisplayFactorySingle; +} + +// ---------------------------------------------------------------------------- +// wxDisplayInfo +// ---------------------------------------------------------------------------- + +void wxDisplayInfo::Initialize() +{ + if ( m_flags == (DWORD)-1 ) + { + WinStruct monInfo; + if ( !gs_GetMonitorInfo(m_hmon, (LPMONITORINFO)&monInfo) ) { - wxLogLastError(wxT("EnumDisplaySettings")); - devmode.dmFields = 0; + wxLogLastError(_T("GetMonitorInfo")); + m_flags = 0; + return; } - if ( !(devmode.dmFields&DM_BITSPERPEL) ) - info.m_depth = -1; - else - info.m_depth = devmode.dmBitsPerPel; + wxCopyRECTToRect(monInfo.rcMonitor, m_rect); + wxCopyRECTToRect(monInfo.rcWork, m_rectClient); + m_devName = monInfo.szDevice; + m_flags = monInfo.dwFlags; + } +} + +// ---------------------------------------------------------------------------- +// wxDisplayImplWin32Base +// ---------------------------------------------------------------------------- + +wxRect wxDisplayImplWin32Base::GetGeometry() const +{ + if ( m_info.m_rect.IsEmpty() ) + m_info.Initialize(); + + return m_info.m_rect; +} + +wxRect wxDisplayImplWin32Base::GetClientArea() const +{ + if ( m_info.m_rectClient.IsEmpty() ) + m_info.Initialize(); + + return m_info.m_rectClient; +} + +wxString wxDisplayImplWin32Base::GetName() const +{ + if ( m_info.m_devName.empty() ) + m_info.Initialize(); + + return m_info.m_devName; +} + +bool wxDisplayImplWin32Base::IsPrimary() const +{ + if ( m_info.m_flags == (DWORD)-1 ) + m_info.Initialize(); + + return (m_info.m_flags & MONITORINFOF_PRIMARY) != 0; +} + +wxVideoMode wxDisplayImplWin32Base::GetCurrentMode() const +{ + wxVideoMode mode; + // The first parameter of EnumDisplaySettings() must be NULL under Win95 + // according to MSDN. The version of GetName() we implement for Win95 + // returns an empty string. + const wxString name = GetName(); + const wxChar * const deviceName = name.empty() + ? (const wxChar*)NULL + : (const wxChar*)name.c_str(); - iDevNum++; + DEVMODE dm; + dm.dmSize = sizeof(dm); + dm.dmDriverExtra = 0; + if ( !::EnumDisplaySettings(deviceName, ENUM_CURRENT_SETTINGS, &dm) ) + { + wxLogLastError(_T("EnumDisplaySettings(ENUM_CURRENT_SETTINGS)")); } - return TRUE; + else + { + mode = ConvertToVideoMode(dm); + } + + return mode; } -void wxmswDisplayModule::OnExit() +// ---------------------------------------------------------------------------- +// wxDisplayFactoryWin32Base +// ---------------------------------------------------------------------------- + +int wxDisplayFactoryWin32Base::ms_supportsMultimon = -1; + +wxDisplayFactoryWin32Base::wxDisplayFactoryWin32Base() { - size_t count = g_wxmswDisplayInfoArray->Count(); - while ( count-- ) + if ( ms_supportsMultimon == -1 ) { - wxmswDisplayInfo* info = g_wxmswDisplayInfoArray->Detach ( count ); - delete info; + ms_supportsMultimon = 0; + + wxDynamicLibrary dllUser32(_T("user32.dll")); + + wxLogNull noLog; + + if ( (wxDL_INIT_FUNC(gs_, MonitorFromPoint, dllUser32)) == NULL || + (wxDL_INIT_FUNC(gs_, MonitorFromWindow, dllUser32)) == NULL || + (wxDL_INIT_FUNC_AW(gs_, GetMonitorInfo, dllUser32)) == NULL ) + return; + + ms_supportsMultimon = 1; + + // we can safely let dllUser32 go out of scope, the DLL itself will + // still remain loaded as all Win32 programs use it } - delete g_wxmswDisplayInfoArray; - g_wxmswDisplayInfoArray = 0; } -// --------------------------------------------------------------------------- -// wxDisplay -// --------------------------------------------------------------------------- +void wxDisplayFactoryWin32Base::Clear() +{ + WX_CLEAR_ARRAY(m_displays); +} -size_t wxDisplayBase::GetCount() +wxDisplayFactoryWin32Base::~wxDisplayFactoryWin32Base() { - return GetSystemMetrics ( SM_CMONITORS ); + Clear(); } -int wxDisplayBase::GetFromPoint ( const wxPoint& pt ) +// helper for GetFromPoint() and GetFromWindow() +int wxDisplayFactoryWin32Base::FindDisplayFromHMONITOR(HMONITOR hmon) const +{ + if ( hmon ) + { + const size_t count = m_displays.size(); + for ( size_t n = 0; n < count; n++ ) + { + if ( hmon == m_displays[n]->m_hmon ) + return n; + } + } + + return wxNOT_FOUND; +} + +int wxDisplayFactoryWin32Base::GetFromPoint(const wxPoint& pt) { POINT pt2; pt2.x = pt.x; pt2.y = pt.y; - HMONITOR hmon = MonitorFromPoint ( pt2, 0 ); - if ( !hmon ) - return -1; - size_t count = wxDisplayBase::GetCount(), index; + return FindDisplayFromHMONITOR(gs_MonitorFromPoint(pt2, + MONITOR_DEFAULTTONULL)); +} + +int wxDisplayFactoryWin32Base::GetFromWindow(const wxWindow *window) +{ + return FindDisplayFromHMONITOR(gs_MonitorFromWindow(GetHwndOf(window), + MONITOR_DEFAULTTONULL)); +} + +// ============================================================================ +// wxDisplay implementation using Win32 multimon API +// ============================================================================ - for ( index = 0; index < count; index++ ) +// ---------------------------------------------------------------------------- +// wxDisplayFactoryMultimon initialization +// ---------------------------------------------------------------------------- + +wxDisplayFactoryMultimon::wxDisplayFactoryMultimon() +{ + if ( !ms_supportsMultimon ) + return; + + // look up EnumDisplayMonitors() which we don't need with DirectDraw + // implementation + EnumDisplayMonitors_t pfnEnumDisplayMonitors; { - if ( hmon == (*g_wxmswDisplayInfoArray)[index].m_hmon ) - return index; + wxLogNull noLog; + + wxDynamicLibrary dllUser32(_T("user32.dll")); + if ( (wxDL_INIT_FUNC(pfn, EnumDisplayMonitors, dllUser32)) == NULL ) + return; } - return -1; + // enumerate all displays + if ( !pfnEnumDisplayMonitors(NULL, NULL, MultimonEnumProc, (LPARAM)this) ) + { + wxLogLastError(wxT("EnumDisplayMonitors")); + } } -wxDisplay::wxDisplay ( size_t index ) : wxDisplayBase ( index ) +/* static */ +BOOL CALLBACK +wxDisplayFactoryMultimon::MultimonEnumProc( + HMONITOR hMonitor, // handle to display monitor + HDC WXUNUSED(hdcMonitor), // handle to monitor-appropriate device context + LPRECT lprcMonitor, // pointer to monitor intersection rectangle + LPARAM dwData // data passed from EnumDisplayMonitors (this) +) { + wxDisplayFactoryMultimon *const self = (wxDisplayFactoryMultimon *)dwData; + self->AddDisplay(hMonitor, lprcMonitor); + + // continue the enumeration + return TRUE; } -wxRect wxDisplay::GetGeometry() const +// ---------------------------------------------------------------------------- +// wxDisplayFactoryMultimon helper functions +// ---------------------------------------------------------------------------- + +void wxDisplayFactoryMultimon::AddDisplay(HMONITOR hMonitor, LPRECT lprcMonitor) { - return (*g_wxmswDisplayInfoArray)[m_index].m_rect; + wxDisplayInfo *info = new wxDisplayInfo(hMonitor); + + // we also store the display geometry + info->m_rect = wxRect(lprcMonitor->left, lprcMonitor->top, + lprcMonitor->right - lprcMonitor->left, + lprcMonitor->bottom - lprcMonitor->top); + + // now add this monitor to the array + m_displays.Add(info); } -int wxDisplay::GetDepth() const +// ---------------------------------------------------------------------------- +// wxDisplayFactoryMultimon inherited pure virtuals implementation +// ---------------------------------------------------------------------------- + +wxDisplayImpl *wxDisplayFactoryMultimon::CreateDisplay(unsigned n) { - return (*g_wxmswDisplayInfoArray)[m_index].m_depth; + wxCHECK_MSG( n < m_displays.size(), NULL, _T("invalid display index") ); + + return new wxDisplayImplMultimon(n, *(m_displays[n])); } -wxString wxDisplay::GetName() const +// ---------------------------------------------------------------------------- +// wxDisplayImplMultimon implementation +// ---------------------------------------------------------------------------- + +wxArrayVideoModes +wxDisplayImplMultimon::GetModes(const wxVideoMode& modeMatch) const { - return wxString ( (*g_wxmswDisplayInfoArray)[m_index].m_dd.DeviceName ); + wxArrayVideoModes modes; + + // The first parameter of EnumDisplaySettings() must be NULL under Win95 + // according to MSDN. The version of GetName() we implement for Win95 + // returns an empty string. + const wxString name = GetName(); + const wxChar * const deviceName = name.empty() + ? (const wxChar*)NULL + : (const wxChar*)name.c_str(); + + DEVMODE dm; + dm.dmSize = sizeof(dm); + dm.dmDriverExtra = 0; + for ( int iModeNum = 0; + ::EnumDisplaySettings(deviceName, iModeNum, &dm); + iModeNum++ ) + { + const wxVideoMode mode = ConvertToVideoMode(dm); + if ( mode.Matches(modeMatch) ) + { + modes.Add(mode); + } + } + + return modes; } -#endif//wxUSE_DISPLAY +bool wxDisplayImplMultimon::ChangeMode(const wxVideoMode& mode) +{ + // prepare ChangeDisplaySettingsEx() parameters + DEVMODE dm; + DEVMODE *pDevMode; + + int flags; + + if ( mode == wxDefaultVideoMode ) + { + // reset the video mode to default + pDevMode = NULL; + flags = 0; + } + else // change to the given mode + { + wxCHECK_MSG( mode.w && mode.h, false, + _T("at least the width and height must be specified") ); + + wxZeroMemory(dm); + dm.dmSize = sizeof(dm); + dm.dmDriverExtra = 0; + dm.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT; + dm.dmPelsWidth = mode.w; + dm.dmPelsHeight = mode.h; + + if ( mode.bpp ) + { + dm.dmFields |= DM_BITSPERPEL; + dm.dmBitsPerPel = mode.bpp; + } + + if ( mode.refresh ) + { + dm.dmFields |= DM_DISPLAYFREQUENCY; + dm.dmDisplayFrequency = mode.refresh; + } + + pDevMode = &dm; + +#ifdef __WXWINCE__ + flags = 0; +#else // !__WXWINCE__ + flags = CDS_FULLSCREEN; +#endif // __WXWINCE__/!__WXWINCE__ + } + + + // get pointer to the function dynamically + // + // we're only called from the main thread, so it's ok to use static + // variable + static ChangeDisplaySettingsEx_t pfnChangeDisplaySettingsEx = NULL; + if ( !pfnChangeDisplaySettingsEx ) + { + wxDynamicLibrary dllUser32(_T("user32.dll")); + if ( dllUser32.IsLoaded() ) + { + wxDL_INIT_FUNC_AW(pfn, ChangeDisplaySettingsEx, dllUser32); + } + //else: huh, no user32.dll?? + +#ifndef __WXWINCE__ + if ( !pfnChangeDisplaySettingsEx ) + { + // we must be under Win95 and so there is no multiple monitors + // support anyhow + pfnChangeDisplaySettingsEx = ChangeDisplaySettingsExForWin95; + } +#endif // !__WXWINCE__ + } + + // do change the mode + switch ( pfnChangeDisplaySettingsEx + ( + GetName().wx_str(), // display name + pDevMode, // dev mode or NULL to reset + NULL, // reserved + flags, + NULL // pointer to video parameters (not used) + ) ) + { + case DISP_CHANGE_SUCCESSFUL: + // ok + { + // If we have a top-level, full-screen frame, emulate + // the DirectX behavior and resize it. This makes this + // API quite a bit easier to use. + wxWindow *winTop = wxTheApp->GetTopWindow(); + wxFrame *frameTop = wxDynamicCast(winTop, wxFrame); + if (frameTop && frameTop->IsFullScreen()) + { + wxVideoMode current = GetCurrentMode(); + frameTop->SetClientSize(current.w, current.h); + } + } + return true; + + case DISP_CHANGE_BADMODE: + // don't complain about this, this is the only "expected" error + break; + + default: + wxFAIL_MSG( _T("unexpected ChangeDisplaySettingsEx() return value") ); + } + + return false; +} + + +// ============================================================================ +// DirectDraw-based wxDisplay implementation +// ============================================================================ + +#if wxUSE_DIRECTDRAW + +// ---------------------------------------------------------------------------- +// wxDisplayFactoryDirectDraw initialization +// ---------------------------------------------------------------------------- + +wxDisplayFactoryDirectDraw::wxDisplayFactoryDirectDraw() +{ + if ( !ms_supportsMultimon ) + return; + +#if wxUSE_LOG + // suppress the errors if ddraw.dll is not found, we're prepared to handle + // this + wxLogNull noLog; +#endif + + m_dllDDraw.Load(_T("ddraw.dll")); + + if ( !m_dllDDraw.IsLoaded() ) + return; + + DirectDrawEnumerateEx_t + wxDL_INIT_FUNC_AW(pfn, DirectDrawEnumerateEx, m_dllDDraw); + if ( !pfnDirectDrawEnumerateEx ) + return; + + // we can't continue without DirectDrawCreate() later, so resolve it right + // now and fail the initialization if it's not available + if ( !wxDL_INIT_FUNC(m_pfn, DirectDrawCreate, m_dllDDraw) ) + return; + + if ( (*pfnDirectDrawEnumerateEx)(DDEnumExCallback, + this, + DDENUM_ATTACHEDSECONDARYDEVICES) != DD_OK ) + { + wxLogLastError(_T("DirectDrawEnumerateEx")); + } +} + +wxDisplayFactoryDirectDraw::~wxDisplayFactoryDirectDraw() +{ + // we must clear m_displays now, before m_dllDDraw is unloaded as otherwise + // calling m_pDD2->Release() later would crash + Clear(); +} + +// ---------------------------------------------------------------------------- +// callbacks for monitor/modes enumeration stuff +// ---------------------------------------------------------------------------- + +BOOL WINAPI +wxDisplayFactoryDirectDraw::DDEnumExCallback(GUID *pGuid, + LPTSTR WXUNUSED(driverDescription), + LPTSTR driverName, + LPVOID lpContext, + HMONITOR hmon) +{ + if ( pGuid ) + { + wxDisplayFactoryDirectDraw * self = + wx_static_cast(wxDisplayFactoryDirectDraw *, lpContext); + self->AddDisplay(*pGuid, hmon, driverName); + } + //else: we're called for the primary monitor, skip it + + // continue the enumeration + return TRUE; +} + +// ---------------------------------------------------------------------------- +// wxDisplayFactoryDirectDraw helpers +// ---------------------------------------------------------------------------- + +void wxDisplayFactoryDirectDraw::AddDisplay(const GUID& guid, + HMONITOR hmon, + LPTSTR name) +{ + m_displays.Add(new wxDisplayInfoDirectDraw(guid, hmon, name)); +} + +// ---------------------------------------------------------------------------- +// wxDisplayFactoryDirectDraw inherited pure virtuals implementation +// ---------------------------------------------------------------------------- + +wxDisplayImpl *wxDisplayFactoryDirectDraw::CreateDisplay(unsigned n) +{ + wxCHECK_MSG( n < m_displays.size(), NULL, _T("invalid display index") ); + + wxDisplayInfoDirectDraw * + info = wx_static_cast(wxDisplayInfoDirectDraw *, m_displays[n]); + + if ( !info->m_pDD2 ) + { + IDirectDraw *pDD; + GUID guid(info->m_guid); + HRESULT hr = (*m_pfnDirectDrawCreate)(&guid, &pDD, NULL); + + if ( FAILED(hr) || !pDD ) + { + // what to do?? + wxLogApiError(_T("DirectDrawCreate"), hr); + return NULL; + } + + // we got IDirectDraw, but we need IDirectDraw2 + hr = pDD->QueryInterface(wxIID_IDirectDraw2, (void **)&info->m_pDD2); + pDD->Release(); + + if ( FAILED(hr) || !info->m_pDD2 ) + { + wxLogApiError(_T("IDirectDraw::QueryInterface(IDD2)"), hr); + return NULL; + } + + // NB: m_pDD2 will now be only destroyed when m_displays is destroyed + // which is ok as we don't want to recreate DD objects all the time + } + //else: DirectDraw object corresponding to our display already exists + + return new wxDisplayImplDirectDraw(n, *info, info->m_pDD2); +} + +// ============================================================================ +// wxDisplayImplDirectDraw +// ============================================================================ + +// ---------------------------------------------------------------------------- +// video modes enumeration +// ---------------------------------------------------------------------------- + +// tiny helper class used to pass information from GetModes() to +// wxDDEnumModesCallback +class wxDDVideoModesAdder +{ +public: + // our Add() method will add modes matching modeMatch to modes array + wxDDVideoModesAdder(wxArrayVideoModes& modes, const wxVideoMode& modeMatch) + : m_modes(modes), + m_modeMatch(modeMatch) + { + } + + void Add(const wxVideoMode& mode) + { + if ( mode.Matches(m_modeMatch) ) + m_modes.Add(mode); + } + +private: + wxArrayVideoModes& m_modes; + const wxVideoMode& m_modeMatch; + + DECLARE_NO_COPY_CLASS(wxDDVideoModesAdder) +}; + +HRESULT WINAPI wxDDEnumModesCallback(LPDDSURFACEDESC lpDDSurfaceDesc, + LPVOID lpContext) +{ + // we need at least the mode size + static const DWORD FLAGS_REQUIRED = DDSD_HEIGHT | DDSD_WIDTH; + if ( (lpDDSurfaceDesc->dwFlags & FLAGS_REQUIRED) == FLAGS_REQUIRED ) + { + wxDDVideoModesAdder * const vmodes = + wx_static_cast(wxDDVideoModesAdder *, lpContext); + + vmodes->Add(wxVideoMode(lpDDSurfaceDesc->dwWidth, + lpDDSurfaceDesc->dwHeight, + lpDDSurfaceDesc->ddpfPixelFormat.dwRGBBitCount, + lpDDSurfaceDesc->dwRefreshRate)); + } + + // continue the enumeration + return DDENUMRET_OK; +} + +wxArrayVideoModes +wxDisplayImplDirectDraw::GetModes(const wxVideoMode& modeMatch) const +{ + wxArrayVideoModes modes; + wxDDVideoModesAdder modesAdder(modes, modeMatch); + + HRESULT hr = m_pDD2->EnumDisplayModes + ( + DDEDM_REFRESHRATES, + NULL, // all modes + &modesAdder, // callback parameter + wxDDEnumModesCallback + ); + + if ( FAILED(hr) ) + { + wxLogApiError(_T("IDirectDraw::EnumDisplayModes"), hr); + } + + return modes; +} + +// ---------------------------------------------------------------------------- +// video mode switching +// ---------------------------------------------------------------------------- + +bool wxDisplayImplDirectDraw::ChangeMode(const wxVideoMode& mode) +{ + wxWindow *winTop = wxTheApp->GetTopWindow(); + wxCHECK_MSG( winTop, false, _T("top level window required for DirectX") ); + + HRESULT hr = m_pDD2->SetCooperativeLevel + ( + GetHwndOf(winTop), + DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN + ); + if ( FAILED(hr) ) + { + wxLogApiError(_T("IDirectDraw2::SetCooperativeLevel"), hr); + + return false; + } + + hr = m_pDD2->SetDisplayMode(mode.w, mode.h, mode.bpp, mode.refresh, 0); + if ( FAILED(hr) ) + { + wxLogApiError(_T("IDirectDraw2::SetDisplayMode"), hr); + + return false; + } + + return true; +} + +#endif // wxUSE_DIRECTDRAW + +#endif // wxUSE_DISPLAY