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Extract the DWM colorization parameters from registry (JBR-2070)

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(cherry picked from commit 0330cab60b)
This commit is contained in:
Ivan Migalev
2020-01-20 18:09:34 +07:00
committed by jbrbot
parent 3d766876c4
commit f5a4db0d8c
1 changed files with 34 additions and 5 deletions
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39
src/java.desktop/windows/native/libawt/windows/awt_DesktopProperties.cpp
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@@ -493,6 +493,32 @@ void CheckFontSmoothingSettings(HWND hWnd) {
}
}
BOOL GetDwmColorizationColorFromRegistry(DWORD& colorizationColor, DWORD& colorizationColorBalance) {
// DwmGetColorizationColor is unreliable: it doesn't extract the actual accent color value set by user. To get the
// actual value (usable e.g. to calculate the border colors), we have to use the registry.
DWORD colorizationColorBgr = 0;
DWORD dwordSize(sizeof(DWORD));
HKEY hKey = NULL;
if (::RegOpenKeyEx(HKEY_CURRENT_USER, L"Software\\Microsoft\\Windows\\DWM", 0, KEY_READ, &hKey) != ERROR_SUCCESS) return FALSE;
if (::RegQueryValueEx(hKey, L"ColorizationColor", NULL, NULL, reinterpret_cast<LPBYTE>(&colorizationColorBgr), &dwordSize) != ERROR_SUCCESS) {
RegCloseKey(hKey);
return FALSE;
}
int b = colorizationColorBgr & 0xFF;
int g = (colorizationColorBgr & 0xFF00) >> 8;
int r = (colorizationColorBgr & 0xFF0000) >> 16;
colorizationColor = RGB(r, g, b);
if (::RegQueryValueEx(hKey, L"ColorizationColorBalance", NULL, NULL, reinterpret_cast<LPBYTE>(&colorizationColorBalance), &dwordSize) != ERROR_SUCCESS) {
colorizationColorBalance = -1;
}
RegCloseKey(hKey);
return TRUE;
}
BOOL ColorizationColorAffectsBorders() {
DWORD result = 0;
DWORD bufSize(sizeof(DWORD));
@@ -524,11 +550,14 @@ void AwtDesktopProperties::GetColorParameters() {
BOOL enabled;
DwmIsCompositionEnabled(&enabled);
if (enabled) {
DWORD color;
BOOL opaque = FALSE;
// [tav] todo: listen WM_DWMCOLORIZATIONCOLORCHANGED
DwmGetColorizationColor(&color, &opaque);
SetColorProperty(TEXT("win.dwm.colorizationColor"), RGB(GetBValue(color), GetGValue(color), GetRValue(color)));
DWORD color = 0;
DWORD balance = 0;
if (GetDwmColorizationColorFromRegistry(color, balance)) {
SetColorProperty(TEXT("win.dwm.colorizationColor"), color);
SetIntegerProperty(TEXT("win.dwm.colorizationColorBalance"), balance);
}
SetBooleanProperty(TEXT("win.dwm.colorizationColor.affects.borders"), ColorizationColorAffectsBorders());
}