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Windows dpi scaling.

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This commit is contained in:
Shyotl
2018-04-09 02:08:46 -05:00
parent 50a0902f92
commit d3e1edcc93
8 changed files with 143 additions and 11 deletions
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78
indra/llwindow/llwindowwin32.cpp
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@@ -53,6 +53,7 @@
#include <shellapi.h>
#include <fstream>
#include <Imm.h>
#include <ShellScalingAPI.h>
// Require DirectInput version 8
#define DIRECTINPUT_VERSION 0x0800
@@ -395,6 +396,8 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
mKeyVirtualKey = 0;
mhDC = NULL;
mhRC = NULL;
mUser32Lib = nullptr;
mSHCoreLib = nullptr;
LL_INFOS() << "Desired FSAA Samples = " << mFSAASamples << LL_ENDL;
@@ -659,6 +662,8 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
// Initialize (boot strap) the Language text input management,
// based on the system's (or user's) default settings.
allowLanguageTextInput(NULL, FALSE);
initDPIAwareness();
}
@@ -674,6 +679,16 @@ LLWindowWin32::~LLWindowWin32()
delete [] mWindowClassName;
mWindowClassName = NULL;
FreeLibrary(mUser32Lib);
FreeLibrary(mSHCoreLib);
}
void LLWindowWin32::postInitialized()
{
float xDPIScale, yDPIScale;
getDPIScales(xDPIScale, yDPIScale);
mCallbacks->handleDPIScaleChange(this, xDPIScale, yDPIScale);
}
void LLWindowWin32::show()
@@ -1774,7 +1789,50 @@ void LLWindowWin32::initCursors()
}
}
void LLWindowWin32::initDPIAwareness()
{
mUser32Lib = LoadLibrary(L"user32.dll");
mSHCoreLib = LoadLibrary(L"Shcore.dll");
if (mUser32Lib && mSHCoreLib)
{
MonitorFromWindowFn = reinterpret_cast<decltype(MonitorFromWindowFn)>(GetProcAddress(mUser32Lib, "MonitorFromWindow"));
GetDpiForMonitorFn = reinterpret_cast<decltype(GetDpiForMonitorFn)>(GetProcAddress(mSHCoreLib, "GetDpiForMonitor"));
if (MonitorFromWindowFn && GetDpiForMonitorFn)
{
HRESULT(WINAPI* SetProcessDpiAwareness)(PROCESS_DPI_AWARENESS);
SetProcessDpiAwareness = reinterpret_cast<decltype(SetProcessDpiAwareness)>(GetProcAddress(mSHCoreLib, "SetProcessDpiAwareness"));
if (SetProcessDpiAwareness && SetProcessDpiAwareness(PROCESS_PER_MONITOR_DPI_AWARE) == S_OK)
return;
BOOL(WINAPI* SetProcessDPIAware)(void);
SetProcessDPIAware = reinterpret_cast<decltype(SetProcessDPIAware)>(GetProcAddress(mUser32Lib, "SetProcessDPIAware"));
if (SetProcessDPIAware && SetProcessDPIAware())
return;
}
}
FreeLibrary(mUser32Lib);
FreeLibrary(mSHCoreLib);
mUser32Lib = nullptr;
mSHCoreLib = nullptr;
}
void LLWindowWin32::getDPIScales(float &xDPIScale, float& yDPIScale)
{
xDPIScale = yDPIScale = 1.f;
if (mUser32Lib)
{
uint32_t xDPI, yDPI;
auto window = MonitorFromWindowFn(mWindowHandle, MONITOR_DEFAULTTONEAREST);
if (GetDpiForMonitorFn(window, MDT_EFFECTIVE_DPI, &xDPI, &yDPI) == S_OK)
{
xDPIScale = (float)xDPI / (float)USER_DEFAULT_SCREEN_DPI;
yDPIScale = (float)yDPI / (float)USER_DEFAULT_SCREEN_DPI;
}
}
}
void LLWindowWin32::updateCursor()
{
@@ -2657,6 +2715,26 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
};
return 0;
case WM_DPICHANGED:
{
window_imp->mCallbacks->handlePingWatchdog(window_imp, "Main:WM_DPICHANGED");
if (gDebugWindowProc)
{
LL_INFOS("Window") << "WM_DPICHANGED " << LOWORD(w_param) << " " << HIWORD(w_param) << LL_ENDL;
}
LPRECT rect = (LPRECT)l_param;
S32 width = ((LPRECT)l_param)->right - ((LPRECT)l_param)->left;
S32 height = ((LPRECT)l_param)->bottom - ((LPRECT)l_param)->top;
LL_INFOS() << "rect: " << width << "x" << height << LL_ENDL;
if(window_imp->mCallbacks->handleDPIScaleChange(window_imp,
(F32)LOWORD(w_param) / (F32)USER_DEFAULT_SCREEN_DPI,
(F32)HIWORD(w_param) / (F32)USER_DEFAULT_SCREEN_DPI,
width,
height))
SetWindowPos(h_wnd, HWND_TOP, rect->left, rect->top, rect->right - rect->left, rect->bottom - rect->top, SWP_NOZORDER | SWP_NOACTIVATE);
}
return 0;
break;
}