| 1 | // Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. |
| 2 | |
| 3 | #include "precomp.h" |
| 4 | |
| 5 | // Exit macros |
| 6 | #define DpiuExitOnLastError(x, s, ...) ExitOnLastErrorSource(DUTIL_SOURCE_DPIUTIL, x, s, __VA_ARGS__) |
| 7 | #define DpiuExitOnLastErrorDebugTrace(x, s, ...) ExitOnLastErrorDebugTraceSource(DUTIL_SOURCE_DPIUTIL, x, s, __VA_ARGS__) |
| 8 | #define DpiuExitWithLastError(x, s, ...) ExitWithLastErrorSource(DUTIL_SOURCE_DPIUTIL, x, s, __VA_ARGS__) |
| 9 | #define DpiuExitOnFailure(x, s, ...) ExitOnFailureSource(DUTIL_SOURCE_DPIUTIL, x, s, __VA_ARGS__) |
| 10 | #define DpiuExitOnRootFailure(x, s, ...) ExitOnRootFailureSource(DUTIL_SOURCE_DPIUTIL, x, s, __VA_ARGS__) |
| 11 | #define DpiuExitOnFailureDebugTrace(x, s, ...) ExitOnFailureDebugTraceSource(DUTIL_SOURCE_DPIUTIL, x, s, __VA_ARGS__) |
| 12 | #define DpiuExitOnNull(p, x, e, s, ...) ExitOnNullSource(DUTIL_SOURCE_DPIUTIL, p, x, e, s, __VA_ARGS__) |
| 13 | #define DpiuExitOnNullWithLastError(p, x, s, ...) ExitOnNullWithLastErrorSource(DUTIL_SOURCE_DPIUTIL, p, x, s, __VA_ARGS__) |
| 14 | #define DpiuExitOnNullDebugTrace(p, x, e, s, ...) ExitOnNullDebugTraceSource(DUTIL_SOURCE_DPIUTIL, p, x, e, s, __VA_ARGS__) |
| 15 | #define DpiuExitOnInvalidHandleWithLastError(p, x, s, ...) ExitOnInvalidHandleWithLastErrorSource(DUTIL_SOURCE_DPIUTIL, p, x, s, __VA_ARGS__) |
| 16 | #define DpiuExitOnWin32Error(e, x, s, ...) ExitOnWin32ErrorSource(DUTIL_SOURCE_DPIUTIL, e, x, s, __VA_ARGS__) |
| 17 | |
| 18 | static PFN_ADJUSTWINDOWRECTEXFORDPI vpfnAdjustWindowRectExForDpi = NULL; |
| 19 | static PFN_GETDPIFORMONITOR vpfnGetDpiForMonitor = NULL; |
| 20 | static PFN_GETDPIFORWINDOW vpfnGetDpiForWindow = NULL; |
| 21 | static PFN_SETPROCESSDPIAWARE vpfnSetProcessDPIAware = NULL; |
| 22 | static PFN_SETPROCESSDPIAWARENESS vpfnSetProcessDpiAwareness = NULL; |
| 23 | static PFN_SETPROCESSDPIAWARENESSCONTEXT vpfnSetProcessDpiAwarenessContext = NULL; |
| 24 | |
| 25 | static HMODULE vhShcoreDll = NULL; |
| 26 | static HMODULE vhUser32Dll = NULL; |
| 27 | static BOOL vfDpiuInitialized = FALSE; |
| 28 | |
| 29 | DAPI_(void) DpiuInitialize() |
| 30 | { |
| 31 | HRESULT hr = S_OK; |
| 32 | |
| 33 | hr = LoadSystemLibrary(L"Shcore.dll", &vhShcoreDll); |
| 34 | if (SUCCEEDED(hr)) |
| 35 | { |
| 36 | // Ignore failures. |
| 37 | vpfnGetDpiForMonitor = reinterpret_cast<PFN_GETDPIFORMONITOR>(::GetProcAddress(vhShcoreDll, "GetDpiForMonitor")); |
| 38 | vpfnSetProcessDpiAwareness = reinterpret_cast<PFN_SETPROCESSDPIAWARENESS>(::GetProcAddress(vhShcoreDll, "SetProcessDpiAwareness")); |
| 39 | } |
| 40 | |
| 41 | hr = LoadSystemLibrary(L"User32.dll", &vhUser32Dll); |
| 42 | if (SUCCEEDED(hr)) |
| 43 | { |
| 44 | // Ignore failures. |
| 45 | vpfnAdjustWindowRectExForDpi = reinterpret_cast<PFN_ADJUSTWINDOWRECTEXFORDPI>(::GetProcAddress(vhUser32Dll, "AdjustWindowRectExForDpi")); |
| 46 | vpfnGetDpiForWindow = reinterpret_cast<PFN_GETDPIFORWINDOW>(::GetProcAddress(vhUser32Dll, "GetDpiForWindow")); |
| 47 | vpfnSetProcessDPIAware = reinterpret_cast<PFN_SETPROCESSDPIAWARE>(::GetProcAddress(vhUser32Dll, "SetProcessDPIAware")); |
| 48 | vpfnSetProcessDpiAwarenessContext = reinterpret_cast<PFN_SETPROCESSDPIAWARENESSCONTEXT>(::GetProcAddress(vhUser32Dll, "SetProcessDpiAwarenessContext")); |
| 49 | } |
| 50 | |
| 51 | vfDpiuInitialized = TRUE; |
| 52 | } |
| 53 | |
| 54 | DAPI_(void) DpiuUninitialize() |
| 55 | { |
| 56 | if (vhShcoreDll) |
| 57 | { |
| 58 | ::FreeLibrary(vhShcoreDll); |
| 59 | } |
| 60 | |
| 61 | if (vhUser32Dll) |
| 62 | { |
| 63 | ::FreeLibrary(vhUser32Dll); |
| 64 | } |
| 65 | |
| 66 | vhShcoreDll = NULL; |
| 67 | vhUser32Dll = NULL; |
| 68 | vpfnAdjustWindowRectExForDpi = NULL; |
| 69 | vpfnGetDpiForMonitor = NULL; |
| 70 | vpfnGetDpiForWindow = NULL; |
| 71 | vfDpiuInitialized = FALSE; |
| 72 | } |
| 73 | |
| 74 | DAPI_(void) DpiuAdjustWindowRect( |
| 75 | __in RECT* pWindowRect, |
| 76 | __in DWORD dwStyle, |
| 77 | __in BOOL fMenu, |
| 78 | __in DWORD dwExStyle, |
| 79 | __in UINT nDpi |
| 80 | ) |
| 81 | { |
| 82 | if (WS_SYSMENU & dwStyle) |
| 83 | { |
| 84 | dwStyle |= WS_CAPTION; // WS_CAPTION is required with WS_SYSMENU, AdjustWindowRect* won't work properly when it's not specified. |
| 85 | } |
| 86 | |
| 87 | if (vpfnAdjustWindowRectExForDpi) |
| 88 | { |
| 89 | vpfnAdjustWindowRectExForDpi(pWindowRect, dwStyle, fMenu, dwExStyle, nDpi); |
| 90 | } |
| 91 | else |
| 92 | { |
| 93 | ::AdjustWindowRectEx(pWindowRect, dwStyle, fMenu, dwExStyle); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | DAPI_(HRESULT) DpiuGetMonitorContextFromPoint( |
| 98 | __in const POINT* pt, |
| 99 | __out DPIU_MONITOR_CONTEXT** ppMonitorContext |
| 100 | ) |
| 101 | { |
| 102 | HRESULT hr = S_OK; |
| 103 | DPIU_MONITOR_CONTEXT* pMonitorContext = NULL; |
| 104 | HMONITOR hMonitor = NULL; |
| 105 | UINT dpiX = 0; |
| 106 | UINT dpiY = 0; |
| 107 | HDC hdc = NULL; |
| 108 | |
| 109 | pMonitorContext = reinterpret_cast<DPIU_MONITOR_CONTEXT*>(MemAlloc(sizeof(DPIU_MONITOR_CONTEXT), TRUE)); |
| 110 | DpiuExitOnNull(pMonitorContext, hr, E_OUTOFMEMORY, "Failed to allocate memory for DpiuMonitorContext."); |
| 111 | |
| 112 | hMonitor = ::MonitorFromPoint(*pt, MONITOR_DEFAULTTONEAREST); |
| 113 | DpiuExitOnNull(hMonitor, hr, E_FAIL, "Failed to get monitor from point."); |
| 114 | |
| 115 | pMonitorContext->mi.cbSize = sizeof(pMonitorContext->mi); |
| 116 | if (!::GetMonitorInfoW(hMonitor, &pMonitorContext->mi)) |
| 117 | { |
| 118 | DpiuExitOnFailure(hr = E_OUTOFMEMORY, "Failed to get monitor info for point."); |
| 119 | } |
| 120 | |
| 121 | if (vpfnGetDpiForMonitor) |
| 122 | { |
| 123 | hr = vpfnGetDpiForMonitor(hMonitor, MDT_EFFECTIVE_DPI, &dpiX, &dpiY); |
| 124 | DpiuExitOnFailure(hr, "Failed to get DPI for monitor."); |
| 125 | |
| 126 | pMonitorContext->nDpi = dpiX; |
| 127 | } |
| 128 | else |
| 129 | { |
| 130 | hdc = ::CreateDCW(L"DISPLAY", pMonitorContext->mi.szDevice, NULL, NULL); |
| 131 | DpiuExitOnNull(hdc, hr, E_OUTOFMEMORY, "Failed to get device context for monitor."); |
| 132 | |
| 133 | pMonitorContext->nDpi = ::GetDeviceCaps(hdc, LOGPIXELSX); |
| 134 | } |
| 135 | |
| 136 | *ppMonitorContext = pMonitorContext; |
| 137 | pMonitorContext = NULL; |
| 138 | |
| 139 | LExit: |
| 140 | if (hdc) |
| 141 | { |
| 142 | ::ReleaseDC(NULL, hdc); |
| 143 | } |
| 144 | |
| 145 | MemFree(pMonitorContext); |
| 146 | |
| 147 | return hr; |
| 148 | } |
| 149 | |
| 150 | DAPI_(void) DpiuGetWindowContext( |
| 151 | __in HWND hWnd, |
| 152 | __in DPIU_WINDOW_CONTEXT* pWindowContext |
| 153 | ) |
| 154 | { |
| 155 | HRESULT hr = S_OK; |
| 156 | HMONITOR hMonitor = NULL; |
| 157 | UINT dpiX = 0; |
| 158 | UINT dpiY = 0; |
| 159 | HDC hdc = NULL; |
| 160 | |
| 161 | pWindowContext->nDpi = USER_DEFAULT_SCREEN_DPI; |
| 162 | |
| 163 | if (vpfnGetDpiForWindow) |
| 164 | { |
| 165 | pWindowContext->nDpi = vpfnGetDpiForWindow(hWnd); |
| 166 | ExitFunction(); |
| 167 | } |
| 168 | |
| 169 | if (vpfnGetDpiForMonitor) |
| 170 | { |
| 171 | hMonitor = ::MonitorFromWindow(hWnd, MONITOR_DEFAULTTONEAREST); |
| 172 | if (hMonitor) |
| 173 | { |
| 174 | hr = vpfnGetDpiForMonitor(hMonitor, MDT_EFFECTIVE_DPI, &dpiX, &dpiY); |
| 175 | if (SUCCEEDED(hr)) |
| 176 | { |
| 177 | pWindowContext->nDpi = dpiX; |
| 178 | ExitFunction(); |
| 179 | } |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | hdc = ::GetDC(hWnd); |
| 184 | if (hdc) |
| 185 | { |
| 186 | pWindowContext->nDpi = ::GetDeviceCaps(hdc, LOGPIXELSX); |
| 187 | } |
| 188 | |
| 189 | LExit: |
| 190 | if (hdc) |
| 191 | { |
| 192 | ::ReleaseDC(hWnd, hdc); |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | DAPI_(int) DpiuScaleValue( |
| 197 | __in int nDefaultDpiValue, |
| 198 | __in UINT nTargetDpi |
| 199 | ) |
| 200 | { |
| 201 | return ::MulDiv(nDefaultDpiValue, nTargetDpi, USER_DEFAULT_SCREEN_DPI); |
| 202 | } |
| 203 | |
| 204 | DAPI_(HRESULT) DpiuSetProcessDpiAwareness( |
| 205 | __in DPIU_AWARENESS supportedAwareness, |
| 206 | __in_opt DPIU_AWARENESS* pSelectedAwareness |
| 207 | ) |
| 208 | { |
| 209 | HRESULT hr = S_OK; |
| 210 | DPIU_AWARENESS selectedAwareness = DPIU_AWARENESS_NONE; |
| 211 | DPI_AWARENESS_CONTEXT awarenessContext = DPI_AWARENESS_CONTEXT_UNAWARE; |
| 212 | PROCESS_DPI_AWARENESS awareness = PROCESS_DPI_UNAWARE; |
| 213 | |
| 214 | if (vpfnSetProcessDpiAwarenessContext) |
| 215 | { |
| 216 | if (DPIU_AWARENESS_PERMONITORV2 & supportedAwareness) |
| 217 | { |
| 218 | awarenessContext = DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2; |
| 219 | selectedAwareness = DPIU_AWARENESS_PERMONITORV2; |
| 220 | } |
| 221 | else if (DPIU_AWARENESS_PERMONITOR & supportedAwareness) |
| 222 | { |
| 223 | awarenessContext = DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE; |
| 224 | selectedAwareness = DPIU_AWARENESS_PERMONITOR; |
| 225 | } |
| 226 | else if (DPIU_AWARENESS_SYSTEM & supportedAwareness) |
| 227 | { |
| 228 | awarenessContext = DPI_AWARENESS_CONTEXT_SYSTEM_AWARE; |
| 229 | selectedAwareness = DPIU_AWARENESS_SYSTEM; |
| 230 | } |
| 231 | else if (DPIU_AWARENESS_GDISCALED & supportedAwareness) |
| 232 | { |
| 233 | awarenessContext = DPI_AWARENESS_CONTEXT_UNAWARE_GDISCALED; |
| 234 | selectedAwareness = DPIU_AWARENESS_GDISCALED; |
| 235 | } |
| 236 | |
| 237 | if (!vpfnSetProcessDpiAwarenessContext(awarenessContext)) |
| 238 | { |
| 239 | DpiuExitOnLastError(hr, "Failed to set process DPI awareness context."); |
| 240 | } |
| 241 | } |
| 242 | else if (vpfnSetProcessDpiAwareness) |
| 243 | { |
| 244 | if (DPIU_AWARENESS_PERMONITOR & supportedAwareness) |
| 245 | { |
| 246 | awareness = PROCESS_PER_MONITOR_DPI_AWARE; |
| 247 | selectedAwareness = DPIU_AWARENESS_PERMONITOR; |
| 248 | } |
| 249 | else if (DPIU_AWARENESS_SYSTEM & supportedAwareness) |
| 250 | { |
| 251 | awareness = PROCESS_SYSTEM_DPI_AWARE; |
| 252 | selectedAwareness = DPIU_AWARENESS_SYSTEM; |
| 253 | } |
| 254 | |
| 255 | hr = vpfnSetProcessDpiAwareness(awareness); |
| 256 | DpiuExitOnFailure(hr, "Failed to set process DPI awareness."); |
| 257 | } |
| 258 | else if (vpfnSetProcessDPIAware && (DPIU_AWARENESS_SYSTEM & supportedAwareness)) |
| 259 | { |
| 260 | selectedAwareness = DPIU_AWARENESS_SYSTEM; |
| 261 | if (!vpfnSetProcessDPIAware()) |
| 262 | { |
| 263 | DpiuExitOnLastError(hr, "Failed to set process DPI aware."); |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | LExit: |
| 268 | if (pSelectedAwareness) |
| 269 | { |
| 270 | *pSelectedAwareness = selectedAwareness; |
| 271 | } |
| 272 | |
| 273 | return hr; |
| 274 | } |