mirror of
https://github.com/UberGames/GtkRadiant.git
synced 2024-11-30 23:52:13 +00:00
2def0428da
git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/branches/ZeroRadiant.ab@308 8a3a26a2-13c4-0310-b231-cf6edde360e5
381 lines
11 KiB
C
381 lines
11 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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{
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HMODULE hUser32;
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static BOOL fInitDone;
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if (fInitDone)
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{
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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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{
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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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{
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if (InitMultipleMonitorStubs())
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return g_pfnGetSystemMetrics(nIndex);
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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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{
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if (InitMultipleMonitorStubs())
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return g_pfnMonitorFromRect(lprcScreenCoords, uFlags);
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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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{
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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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{
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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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if (uFlags & (MONITOR_DEFAULTTOPRIMARY | MONITOR_DEFAULTTONEAREST))
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return xPRIMARY_MONITOR;
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if (GetWindowRect(hWnd, &rc))
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return xMonitorFromRect(&rc, uFlags);
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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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{
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if (InitMultipleMonitorStubs())
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return g_pfnMonitorFromPoint(ptScreenCoords, uFlags);
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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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{
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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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{
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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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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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{
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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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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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{
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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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if (!lpfnEnumProc)
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return FALSE;
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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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{
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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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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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//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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{
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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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{
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if (InitMultipleMonitorStubs())
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return g_pfnEnumDisplayDevices(lpReserved, iDeviceNum, pDisplayDevice, dwFlags);
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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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