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-rw-r--r--widget/windows/nsLookAndFeel.cpp100
-rw-r--r--widget/windows/nsLookAndFeel.h27
-rw-r--r--widget/windows/nsWindow.cpp22
3 files changed, 144 insertions, 5 deletions
diff --git a/widget/windows/nsLookAndFeel.cpp b/widget/windows/nsLookAndFeel.cpp
index 7c427ac9f..e649802b1 100644
--- a/widget/windows/nsLookAndFeel.cpp
+++ b/widget/windows/nsLookAndFeel.cpp
@@ -267,6 +267,23 @@ nsLookAndFeel::NativeGetColor(ColorID aID, nscolor &aColor)
case eColorID__moz_cellhighlight:
idx = COLOR_3DFACE;
break;
+ case eColorID__moz_win_accentcolor:
+ res = GetAccentColor(aColor);
+ if (NS_SUCCEEDED(res)) {
+ return res;
+ }
+ NS_WARNING("Using fallback for accent color - UI code failed to use the "
+ "-moz-windows-accent-color-applies media query properly");
+ // Seems to be the default color (hardcoded because of bug 1065998)
+ aColor = NS_RGB(158, 158, 158);
+ return NS_OK;
+ case eColorID__moz_win_accentcolortext:
+ res = GetAccentColorText(aColor);
+ if (NS_SUCCEEDED(res)) {
+ return res;
+ }
+ aColor = NS_RGB(0, 0, 0);
+ return NS_OK;
case eColorID__moz_win_mediatext:
if (IsVistaOrLater() && IsAppThemed()) {
res = ::GetColorFromTheme(eUXMediaToolbar,
@@ -419,6 +436,20 @@ nsLookAndFeel::GetIntImpl(IntID aID, int32_t &aResult)
case eIntID_DWMCompositor:
aResult = nsUXThemeData::CheckForCompositor();
break;
+ case eIntID_WindowsAccentColorApplies:
+ {
+ nscolor unused;
+ aResult = NS_SUCCEEDED(GetAccentColor(unused)) ? 1 : 0;
+ }
+ break;
+ case eIntID_WindowsAccentColorIsDark:
+ {
+ nscolor accentColor;
+ if (NS_SUCCEEDED(GetAccentColor(accentColor))) {
+ aResult = AccentColorIsDark(accentColor) ? 1 : 0;
+ }
+ }
+ break;
case eIntID_WindowsGlass:
// Aero Glass is only available prior to Windows 8 when DWM is used.
aResult = (nsUXThemeData::CheckForCompositor() && !IsWin8OrLater());
@@ -699,3 +730,72 @@ nsLookAndFeel::SetIntCacheImpl(const nsTArray<LookAndFeelInt>& aLookAndFeelIntCa
}
}
+/* static */ nsresult
+nsLookAndFeel::GetAccentColor(nscolor& aColor)
+{
+ nsresult rv;
+
+ if (!mDwmKey) {
+ mDwmKey = do_CreateInstance("@mozilla.org/windows-registry-key;1", &rv);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return rv;
+ }
+ }
+
+ rv = mDwmKey->Open(nsIWindowsRegKey::ROOT_KEY_CURRENT_USER,
+ NS_LITERAL_STRING("SOFTWARE\\Microsoft\\Windows\\DWM"),
+ nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return rv;
+ }
+
+ // The ColorPrevalence value is set to 1 when the "Show color on title bar"
+ // setting in the Color section of Window's Personalization settings is
+ // turned on.
+ uint32_t accentColor, colorPrevalence;
+ if (NS_SUCCEEDED(mDwmKey->ReadIntValue(NS_LITERAL_STRING("AccentColor"), &accentColor)) &&
+ NS_SUCCEEDED(mDwmKey->ReadIntValue(NS_LITERAL_STRING("ColorPrevalence"), &colorPrevalence)) &&
+ colorPrevalence == 1) {
+ // The order of the color components in the DWORD stored in the registry
+ // happens to be the same order as we store the components in nscolor
+ // so we can just assign directly here.
+ aColor = accentColor;
+ rv = NS_OK;
+ } else {
+ rv = NS_ERROR_NOT_AVAILABLE;
+ }
+
+ mDwmKey->Close();
+
+ return rv;
+}
+
+bool
+nsLookAndFeel::AccentColorIsDark(nscolor aColor)
+{
+ float luminance = (NS_GET_R(aColor) * 2 +
+ NS_GET_G(aColor) * 5 +
+ NS_GET_B(aColor)) / 8;
+
+ return luminance <= 128;
+}
+
+/* static */ nsresult
+nsLookAndFeel::GetAccentColorText(nscolor& aColor)
+{
+ nscolor accentColor;
+ nsresult rv = GetAccentColor(accentColor);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return rv;
+ }
+
+ // We want the color that we return for text that will be drawn over
+ // a background that has the accent color to have good contrast with
+ // the accent color. Windows itself uses either white or black text
+ // depending on how light or dark the accent color is. We do the same
+ // here based on the luminance of the accent color.
+
+ aColor = AccentColorIsDark(accentColor) ? NS_RGB(255, 255, 255) : NS_RGB(0, 0, 0);
+
+ return NS_OK;
+}
diff --git a/widget/windows/nsLookAndFeel.h b/widget/windows/nsLookAndFeel.h
index bc2d158b6..6200541f5 100644
--- a/widget/windows/nsLookAndFeel.h
+++ b/widget/windows/nsLookAndFeel.h
@@ -6,6 +6,7 @@
#ifndef __nsLookAndFeel
#define __nsLookAndFeel
#include "nsXPLookAndFeel.h"
+#include "nsIWindowsRegKey.h"
/*
* Gesture System Metrics
@@ -59,7 +60,33 @@ public:
virtual void SetIntCacheImpl(const nsTArray<LookAndFeelInt>& aLookAndFeelIntCache);
private:
+ /**
+ * Fetches the Windows accent color from the Windows settings if
+ * the accent color is set to apply to the title bar, otherwise
+ * returns an error code.
+ */
+ nsresult GetAccentColor(nscolor& aColor);
+
+ /**
+ * Determines whether the Windows accent color is considered dark
+ * with a threshhold value and formula that are specified in the
+ * UWP guidelines.
+ * See: https://docs.microsoft.com/en-us/windows/uwp/style/color
+ */
+ bool AccentColorIsDark(nscolor aColor);
+
+ /**
+ * If the Windows accent color from the Windows settings is set
+ * to apply to the title bar, this computes the color that should
+ * be used for text that is to be written over a background that has
+ * the accent color. Otherwise, (if the accent color should not
+ * apply to the title bar) this returns an error code.
+ */
+ nsresult GetAccentColorText(nscolor& aColor);
+
int32_t mUseAccessibilityTheme;
+
+ nsCOMPtr<nsIWindowsRegKey> mDwmKey;
};
#endif
diff --git a/widget/windows/nsWindow.cpp b/widget/windows/nsWindow.cpp
index 2172f2aa0..85321a189 100644
--- a/widget/windows/nsWindow.cpp
+++ b/widget/windows/nsWindow.cpp
@@ -5084,12 +5084,19 @@ nsWindow::ProcessMessage(UINT msg, WPARAM& wParam, LPARAM& lParam,
case WM_SETTINGCHANGE:
{
- if (IsWin10OrLater() && mWindowType == eWindowType_invisible && lParam) {
+ if (lParam) {
auto lParamString = reinterpret_cast<const wchar_t*>(lParam);
- if (!wcscmp(lParamString, L"UserInteractionMode")) {
- nsCOMPtr<nsIWindowsUIUtils> uiUtils(do_GetService("@mozilla.org/windows-ui-utils;1"));
- if (uiUtils) {
- uiUtils->UpdateTabletModeState();
+ if (!wcscmp(lParamString, L"ImmersiveColorSet")) {
+ // WM_SYSCOLORCHANGE is not dispatched for accent color changes
+ OnSysColorChanged();
+ break;
+ }
+ if (IsWin10OrLater() && mWindowType == eWindowType_invisible) {
+ if (!wcscmp(lParamString, L"UserInteractionMode")) {
+ nsCOMPtr<nsIWindowsUIUtils> uiUtils(do_GetService("@mozilla.org/windows-ui-utils;1"));
+ if (uiUtils) {
+ uiUtils->UpdateTabletModeState();
+ }
}
}
}
@@ -7131,6 +7138,11 @@ nsWindow::OnSysColorChanged()
// so all presentations get notified properly.
// See nsWindow::GlobalMsgWindowProc.
NotifySysColorChanged();
+ // On Windows 10 only, we trigger a theme change to pick up changed media
+ // queries that are needed for accent color changes.
+ if (IsWin10OrLater()) {
+ NotifyThemeChanged();
+ }
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 00:28:03 +0000