mirror of https://github.com/TTimo/GtkRadiant.git
380 lines
10 KiB
C
380 lines
10 KiB
C
#ifndef __MULTIMON_H
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#define __MULTIMON_H
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#ifdef _WIN32
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//=============================================================================
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//
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// MULTIMON
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// stub module that "stubs" multiple monitor APIs on pre-Memphis Win32 OSes
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//
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// By using this header your code will work unchanged on Win95,
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// you will get back correct values from GetSystemMetrics() for new metrics
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// and the new APIs will act like only one display is present.
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//
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// exactly one source must include this with COMPILE_MULTIMON_STUBS defined
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//
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//=============================================================================
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#ifdef __cplusplus
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extern "C" { /* Assume C declarations for C++ */
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#endif /* __cplusplus */
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//
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// if we are building on Win95/NT4 headers we need to declare this stuff ourselves
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//
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#ifndef SM_CMONITORS
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#define SM_XVIRTUALSCREEN 76
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#define SM_YVIRTUALSCREEN 77
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#define SM_CXVIRTUALSCREEN 78
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#define SM_CYVIRTUALSCREEN 79
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#define SM_CMONITORS 80
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#define SM_SAMEDISPLAYFORMAT 81
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DECLARE_HANDLE( HMONITOR );
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#define MONITOR_DEFAULTTONULL 0x00000000
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#define MONITOR_DEFAULTTOPRIMARY 0x00000001
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#define MONITOR_DEFAULTTONEAREST 0x00000002
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#define MONITORINFOF_PRIMARY 0x00000001
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typedef struct tagMONITORINFO
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{
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DWORD cbSize;
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RECT rcMonitor;
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RECT rcWork;
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DWORD dwFlags;
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} MONITORINFO, *LPMONITORINFO;
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#define CCHDEVICENAME 32
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#ifdef __cplusplus
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typedef struct tagMONITORINFOEX : public tagMONITORINFO
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{
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TCHAR szDevice[CCHDEVICENAME];
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} MONITORINFOEX, *LPMONITORINFOEX;
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#else
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typedef struct
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{
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MONITORINFO;
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TCHAR szDevice[CCHDEVICENAME];
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} MONITORINFOEX, *LPMONITORINFOEX;
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#endif
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typedef BOOL ( CALLBACK * MONITORENUMPROC )( HMONITOR, HDC, LPRECT, LPARAM );
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#endif // SM_CMONITORS
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#ifndef DISPLAY_DEVICE_ATTACHED_TO_DESKTOP
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typedef struct {
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DWORD cb;
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CHAR DeviceName[32];
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CHAR DeviceString[128];
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DWORD StateFlags;
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} DISPLAY_DEVICE;
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#define DISPLAY_DEVICE_ATTACHED_TO_DESKTOP 0x00000001
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#define DISPLAY_DEVICE_MULTI_DRIVER 0x00000002
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#define DISPLAY_DEVICE_PRIMARY_DEVICE 0x00000004
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#define DISPLAY_DEVICE_MIRRORING_DRIVER 0x00000008
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#endif
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#define DISPLAY_DEVICE_VGA 0x00000010
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#ifndef ENUM_CURRENT_SETTINGS
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#define ENUM_CURRENT_SETTINGS ( (DWORD)-1 )
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#define ENUM_REGISTRY_SETTINGS ( (DWORD)-2 )
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#endif
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#undef GetMonitorInfo
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#undef GetSystemMetrics
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#undef MonitorFromWindow
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#undef MonitorFromRect
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#undef MonitorFromPoint
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#undef EnumDisplayMonitors
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#undef EnumDisplayDevices
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//
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// define this to compile the stubs
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// otherwise you get the declarations
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//
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#ifdef COMPILE_MULTIMON_STUBS
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//---------------------------------------------------------------------------
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//
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// Implement the API stubs.
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//
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//---------------------------------------------------------------------------
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int ( WINAPI* g_pfnGetSystemMetrics )( int );
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HMONITOR ( WINAPI* g_pfnMonitorFromWindow )( HWND, BOOL );
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HMONITOR ( WINAPI* g_pfnMonitorFromRect )( LPCRECT, BOOL );
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HMONITOR ( WINAPI* g_pfnMonitorFromPoint )( POINT, BOOL );
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BOOL ( WINAPI* g_pfnGetMonitorInfo )( HMONITOR, LPMONITORINFO );
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BOOL ( WINAPI* g_pfnEnumDisplayMonitors )( HDC, LPCRECT, MONITORENUMPROC, LPARAM );
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BOOL ( WINAPI *g_pfnEnumDisplayDevices )( LPVOID, int, DISPLAY_DEVICE *, DWORD );
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BOOL InitMultipleMonitorStubs( void ){
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HMODULE hUser32;
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static BOOL fInitDone;
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if ( fInitDone ) {
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return g_pfnGetMonitorInfo != NULL;
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}
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if ( ( hUser32 = GetModuleHandle( TEXT( "USER32" ) ) ) &&
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( *(FARPROC*)&g_pfnGetSystemMetrics = GetProcAddress( hUser32,"GetSystemMetrics" ) ) &&
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( *(FARPROC*)&g_pfnMonitorFromWindow = GetProcAddress( hUser32,"MonitorFromWindow" ) ) &&
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( *(FARPROC*)&g_pfnMonitorFromRect = GetProcAddress( hUser32,"MonitorFromRect" ) ) &&
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( *(FARPROC*)&g_pfnMonitorFromPoint = GetProcAddress( hUser32,"MonitorFromPoint" ) ) &&
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( *(FARPROC*)&g_pfnEnumDisplayMonitors = GetProcAddress( hUser32,"EnumDisplayMonitors" ) ) &&
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#ifdef UNICODE
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( *(FARPROC*)&g_pfnGetMonitorInfo = GetProcAddress( hUser32,"GetMonitorInfoW" ) ) &&
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( *(FARPROC*)&g_pfnEnumDisplayDevices = GetProcAddress( hUser32,"EnumDisplayDevicesW" ) ) &&
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#else
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( *(FARPROC*)&g_pfnGetMonitorInfo = GetProcAddress( hUser32,"GetMonitorInfoA" ) ) &&
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( *(FARPROC*)&g_pfnEnumDisplayDevices = GetProcAddress( hUser32,"EnumDisplayDevicesA" ) ) &&
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#endif
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( GetSystemMetrics( SM_CXVIRTUALSCREEN ) >= GetSystemMetrics( SM_CXSCREEN ) ) &&
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( GetSystemMetrics( SM_CYVIRTUALSCREEN ) >= GetSystemMetrics( SM_CYSCREEN ) ) ) {
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fInitDone = TRUE;
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return TRUE;
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}
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else
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{
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g_pfnGetSystemMetrics = NULL;
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g_pfnMonitorFromWindow = NULL;
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g_pfnMonitorFromRect = NULL;
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g_pfnMonitorFromPoint = NULL;
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g_pfnGetMonitorInfo = NULL;
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g_pfnEnumDisplayMonitors = NULL;
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g_pfnEnumDisplayDevices = NULL;
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fInitDone = TRUE;
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return FALSE;
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}
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}
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//---------------------------------------------------------------------------
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//
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// "stubbed" implementations of Monitor APIs that work with the primary // display
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//
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//---------------------------------------------------------------------------
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int WINAPI
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xGetSystemMetrics( int nIndex ){
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if ( InitMultipleMonitorStubs() ) {
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return g_pfnGetSystemMetrics( nIndex );
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}
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switch ( nIndex )
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{
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case SM_CMONITORS:
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case SM_SAMEDISPLAYFORMAT:
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return 1;
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case SM_XVIRTUALSCREEN:
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case SM_YVIRTUALSCREEN:
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return 0;
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case SM_CXVIRTUALSCREEN:
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nIndex = SM_CXSCREEN;
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break;
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case SM_CYVIRTUALSCREEN:
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nIndex = SM_CYSCREEN;
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break;
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}
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return GetSystemMetrics( nIndex );
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}
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#define xPRIMARY_MONITOR ( (HMONITOR)0x42 )
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HMONITOR WINAPI
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xMonitorFromRect( LPCRECT lprcScreenCoords,
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UINT uFlags ){
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if ( InitMultipleMonitorStubs() ) {
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return g_pfnMonitorFromRect( lprcScreenCoords, uFlags );
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}
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if ( ( uFlags & ( MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST ) ) ||
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( ( lprcScreenCoords->right > 0 ) &&
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( lprcScreenCoords->bottom > 0 ) &&
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( lprcScreenCoords->left < GetSystemMetrics( SM_CXSCREEN ) ) &&
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( lprcScreenCoords->top < GetSystemMetrics( SM_CYSCREEN ) ) ) ) {
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return xPRIMARY_MONITOR;
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}
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return NULL;
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}
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HMONITOR WINAPI
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xMonitorFromWindow( HWND hWnd,
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UINT uFlags ){
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RECT rc;
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if ( InitMultipleMonitorStubs() ) {
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return g_pfnMonitorFromWindow( hWnd, uFlags );
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}
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if ( uFlags & ( MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST ) ) {
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return xPRIMARY_MONITOR;
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}
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if ( GetWindowRect( hWnd, &rc ) ) {
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return xMonitorFromRect( &rc, uFlags );
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}
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return NULL;
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}
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HMONITOR WINAPI
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xMonitorFromPoint( POINT ptScreenCoords,
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UINT uFlags ){
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if ( InitMultipleMonitorStubs() ) {
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return g_pfnMonitorFromPoint( ptScreenCoords, uFlags );
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}
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if ( ( uFlags & ( MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST ) ) ||
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( ( ptScreenCoords.x >= 0 ) &&
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( ptScreenCoords.x < GetSystemMetrics( SM_CXSCREEN ) ) &&
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( ptScreenCoords.y >= 0 ) &&
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( ptScreenCoords.y < GetSystemMetrics( SM_CYSCREEN ) ) ) ) {
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return xPRIMARY_MONITOR;
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}
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return NULL;
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}
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BOOL WINAPI
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xGetMonitorInfo( HMONITOR hMonitor,
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LPMONITORINFO lpMonitorInfo ){
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RECT rcWork;
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if ( InitMultipleMonitorStubs() ) {
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return g_pfnGetMonitorInfo( hMonitor, lpMonitorInfo );
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}
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if ( ( hMonitor == xPRIMARY_MONITOR ) && lpMonitorInfo &&
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( lpMonitorInfo->cbSize >= sizeof( MONITORINFO ) ) &&
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SystemParametersInfo( SPI_GETWORKAREA, 0, &rcWork, 0 ) ) {
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lpMonitorInfo->rcMonitor.left = 0;
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lpMonitorInfo->rcMonitor.top = 0;
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lpMonitorInfo->rcMonitor.right = GetSystemMetrics( SM_CXSCREEN );
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lpMonitorInfo->rcMonitor.bottom = GetSystemMetrics( SM_CYSCREEN );
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lpMonitorInfo->rcWork = rcWork;
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lpMonitorInfo->dwFlags = MONITORINFOF_PRIMARY;
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if ( lpMonitorInfo->cbSize >= sizeof( MONITORINFOEX ) ) {
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lstrcpy( ( (MONITORINFOEX*)lpMonitorInfo )->szDevice,
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TEXT( "DISPLAY" ) );
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}
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return TRUE;
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}
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return FALSE;
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}
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BOOL WINAPI
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xEnumDisplayMonitors( HDC hdc,
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LPCRECT lprcIntersect,
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MONITORENUMPROC lpfnEnumProc,
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LPARAM lData ){
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RECT rcCallback, rcLimit;
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if ( InitMultipleMonitorStubs() ) {
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return g_pfnEnumDisplayMonitors( hdc, lprcIntersect, lpfnEnumProc, lData );
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}
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if ( !lpfnEnumProc ) {
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return FALSE;
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}
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rcLimit.left = 0;
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rcLimit.top = 0;
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rcLimit.right = GetSystemMetrics( SM_CXSCREEN );
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rcLimit.bottom = GetSystemMetrics( SM_CYSCREEN );
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if ( hdc ) {
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RECT rcClip;
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HWND hWnd;
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if ( ( hWnd = WindowFromDC( hdc ) ) == NULL ) {
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return FALSE;
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}
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switch ( GetClipBox( hdc, &rcClip ) )
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{
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default:
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MapWindowPoints( NULL, hWnd, (LPPOINT)&rcLimit, 2 );
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if ( IntersectRect( &rcCallback, &rcClip, &rcLimit ) ) {
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break;
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}
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//fall thru
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case NULLREGION:
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return TRUE;
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case ERROR:
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return FALSE;
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}
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rcLimit = rcCallback;
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}
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if ( !lprcIntersect || IntersectRect( &rcCallback, lprcIntersect, &rcLimit ) ) {
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lpfnEnumProc( xPRIMARY_MONITOR, hdc, &rcCallback, lData );
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}
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return TRUE;
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}
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BOOL WINAPI
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xEnumDisplayDevices( LPVOID lpReserved,
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int iDeviceNum,
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DISPLAY_DEVICE * pDisplayDevice,
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DWORD dwFlags ){
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if ( InitMultipleMonitorStubs() ) {
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return g_pfnEnumDisplayDevices( lpReserved, iDeviceNum, pDisplayDevice, dwFlags );
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}
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return FALSE;
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}
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#undef xPRIMARY_MONITOR
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#undef COMPILE_MULTIMON_STUBS
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#else // COMPILE_MULTIMON_STUBS
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extern int WINAPI xGetSystemMetrics( int );
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extern HMONITOR WINAPI xMonitorFromWindow( HWND, UINT );
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extern HMONITOR WINAPI xMonitorFromRect( LPCRECT, UINT );
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extern HMONITOR WINAPI xMonitorFromPoint( POINT, UINT );
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extern BOOL WINAPI xGetMonitorInfo( HMONITOR, LPMONITORINFO );
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extern BOOL WINAPI xEnumDisplayMonitors( HDC, LPCRECT, MONITORENUMPROC, LPARAM );
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extern BOOL WINAPI xEnumDisplayDevices( LPVOID, int, DISPLAY_DEVICE *, DWORD );
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#endif // COMPILE_MULTIMON_STUBS
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//
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// build defines that replace the regular APIs with our versions
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//
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#define GetSystemMetrics xGetSystemMetrics
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#define MonitorFromWindow xMonitorFromWindow
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#define MonitorFromRect xMonitorFromRect
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#define MonitorFromPoint xMonitorFromPoint
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#define GetMonitorInfo xGetMonitorInfo
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#define EnumDisplayMonitors xEnumDisplayMonitors
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#define EnumDisplayDevices xEnumDisplayDevices
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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#endif // WIN32
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#endif // __MULTIMON_H
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