Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1975 insertions, 0 deletions

diff --git a/widget/windows/nsNativeThemeWin.cpp b/widget/windows/nsNativeThemeWin.cpp
new file mode 100644
index 0000000000..04883a833f
--- /dev/null
+++ b/widget/windows/nsNativeThemeWin.cpp
@@ -0,0 +1,1975 @@
+/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsNativeThemeWin.h"
+
+#include <algorithm>
+#include <malloc.h>
+
+#include "gfxContext.h"
+#include "gfxPlatform.h"
+#include "gfxWindowsNativeDrawing.h"
+#include "gfxWindowsPlatform.h"
+#include "gfxWindowsSurface.h"
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/gfx/Types.h"  // for Color::FromABGR
+#include "mozilla/Logging.h"
+#include "mozilla/RelativeLuminanceUtils.h"
+#include "mozilla/StaticPrefs_layout.h"
+#include "mozilla/StaticPrefs_widget.h"
+#include "mozilla/dom/XULButtonElement.h"
+#include "nsColor.h"
+#include "nsComboboxControlFrame.h"
+#include "nsDeviceContext.h"
+#include "nsGkAtoms.h"
+#include "nsIContent.h"
+#include "nsIContentInlines.h"
+#include "nsIFrame.h"
+#include "nsLayoutUtils.h"
+#include "nsLookAndFeel.h"
+#include "nsNameSpaceManager.h"
+#include "Theme.h"
+#include "nsPresContext.h"
+#include "nsRect.h"
+#include "nsSize.h"
+#include "nsStyleConsts.h"
+#include "nsTransform2D.h"
+#include "nsWindow.h"
+#include "prinrval.h"
+#include "WinUtils.h"
+
+using namespace mozilla;
+using namespace mozilla::gfx;
+using namespace mozilla::widget;
+
+using ElementState = dom::ElementState;
+
+extern mozilla::LazyLogModule gWindowsLog;
+
+namespace mozilla::widget {
+
+nsNativeThemeWin::nsNativeThemeWin()
+    : Theme(ScrollbarStyle()),
+      mProgressDeterminateTimeStamp(TimeStamp::Now()),
+      mProgressIndeterminateTimeStamp(TimeStamp::Now()),
+      mBorderCacheValid(),
+      mMinimumWidgetSizeCacheValid(),
+      mGutterSizeCacheValid(false) {}
+
+nsNativeThemeWin::~nsNativeThemeWin() { nsUXThemeData::Invalidate(); }
+
+bool nsNativeThemeWin::IsWidgetAlwaysNonNative(nsIFrame* aFrame,
+                                               StyleAppearance aAppearance) {
+  return Theme::IsWidgetAlwaysNonNative(aFrame, aAppearance) ||
+         aAppearance == StyleAppearance::Checkbox ||
+         aAppearance == StyleAppearance::Radio ||
+         aAppearance == StyleAppearance::MozMenulistArrowButton ||
+         aAppearance == StyleAppearance::SpinnerUpbutton ||
+         aAppearance == StyleAppearance::SpinnerDownbutton;
+}
+
+auto nsNativeThemeWin::IsWidgetNonNative(nsIFrame* aFrame,
+                                         StyleAppearance aAppearance)
+    -> NonNative {
+  if (IsWidgetAlwaysNonNative(aFrame, aAppearance)) {
+    return NonNative::Always;
+  }
+
+  // We only know how to draw light widgets, so we defer to the non-native
+  // theme when appropriate.
+  if (Theme::ThemeSupportsWidget(aFrame->PresContext(), aFrame, aAppearance) &&
+      LookAndFeel::ColorSchemeForFrame(aFrame) ==
+          LookAndFeel::ColorScheme::Dark) {
+    return NonNative::BecauseColorMismatch;
+  }
+  return NonNative::No;
+}
+
+static MARGINS GetCheckboxMargins(HANDLE theme, HDC hdc) {
+  MARGINS checkboxContent = {0};
+  GetThemeMargins(theme, hdc, MENU_POPUPCHECK, MCB_NORMAL, TMT_CONTENTMARGINS,
+                  nullptr, &checkboxContent);
+  return checkboxContent;
+}
+
+static SIZE GetCheckboxBGSize(HANDLE theme, HDC hdc) {
+  SIZE checkboxSize;
+  GetThemePartSize(theme, hdc, MENU_POPUPCHECK, MC_CHECKMARKNORMAL, nullptr,
+                   TS_TRUE, &checkboxSize);
+
+  MARGINS checkboxMargins = GetCheckboxMargins(theme, hdc);
+
+  int leftMargin = checkboxMargins.cxLeftWidth;
+  int rightMargin = checkboxMargins.cxRightWidth;
+  int topMargin = checkboxMargins.cyTopHeight;
+  int bottomMargin = checkboxMargins.cyBottomHeight;
+
+  int width = leftMargin + checkboxSize.cx + rightMargin;
+  int height = topMargin + checkboxSize.cy + bottomMargin;
+  SIZE ret;
+  ret.cx = width;
+  ret.cy = height;
+  return ret;
+}
+
+static SIZE GetCheckboxBGBounds(HANDLE theme, HDC hdc) {
+  MARGINS checkboxBGSizing = {0};
+  MARGINS checkboxBGContent = {0};
+  GetThemeMargins(theme, hdc, MENU_POPUPCHECKBACKGROUND, MCB_NORMAL,
+                  TMT_SIZINGMARGINS, nullptr, &checkboxBGSizing);
+  GetThemeMargins(theme, hdc, MENU_POPUPCHECKBACKGROUND, MCB_NORMAL,
+                  TMT_CONTENTMARGINS, nullptr, &checkboxBGContent);
+
+#define posdx(d) ((d) > 0 ? d : 0)
+
+  int dx =
+      posdx(checkboxBGContent.cxRightWidth - checkboxBGSizing.cxRightWidth) +
+      posdx(checkboxBGContent.cxLeftWidth - checkboxBGSizing.cxLeftWidth);
+  int dy =
+      posdx(checkboxBGContent.cyTopHeight - checkboxBGSizing.cyTopHeight) +
+      posdx(checkboxBGContent.cyBottomHeight - checkboxBGSizing.cyBottomHeight);
+
+#undef posdx
+
+  SIZE ret(GetCheckboxBGSize(theme, hdc));
+  ret.cx += dx;
+  ret.cy += dy;
+  return ret;
+}
+
+static SIZE GetGutterSize(HANDLE theme, HDC hdc) {
+  SIZE gutterSize;
+  GetThemePartSize(theme, hdc, MENU_POPUPGUTTER, 0, nullptr, TS_TRUE,
+                   &gutterSize);
+
+  SIZE checkboxBGSize(GetCheckboxBGBounds(theme, hdc));
+
+  SIZE itemSize;
+  GetThemePartSize(theme, hdc, MENU_POPUPITEM, MPI_NORMAL, nullptr, TS_TRUE,
+                   &itemSize);
+
+  // Figure out how big the menuitem's icon will be (if present) at current DPI
+  // Needs the system scale for consistency with Windows Theme API.
+  double scaleFactor = WinUtils::SystemScaleFactor();
+  int iconDevicePixels = NSToIntRound(16 * scaleFactor);
+  SIZE iconSize = {iconDevicePixels, iconDevicePixels};
+  // Not really sure what margins should be used here, but this seems to work in
+  // practice...
+  MARGINS margins = {0};
+  GetThemeMargins(theme, hdc, MENU_POPUPCHECKBACKGROUND, MCB_NORMAL,
+                  TMT_CONTENTMARGINS, nullptr, &margins);
+  iconSize.cx += margins.cxLeftWidth + margins.cxRightWidth;
+  iconSize.cy += margins.cyTopHeight + margins.cyBottomHeight;
+
+  int width = std::max(
+      itemSize.cx, std::max(iconSize.cx, checkboxBGSize.cx) + gutterSize.cx);
+  int height = std::max(itemSize.cy, std::max(iconSize.cy, checkboxBGSize.cy));
+
+  SIZE ret;
+  ret.cx = width;
+  ret.cy = height;
+  return ret;
+}
+
+SIZE nsNativeThemeWin::GetCachedGutterSize(HANDLE theme) {
+  if (mGutterSizeCacheValid) {
+    return mGutterSizeCache;
+  }
+
+  mGutterSizeCache = GetGutterSize(theme, nullptr);
+  mGutterSizeCacheValid = true;
+
+  return mGutterSizeCache;
+}
+
+/*
+ * Notes on progress track and meter part constants:
+ * xp and up:
+ * PP_BAR(_VERT)            - base progress track
+ * PP_TRANSPARENTBAR(_VERT) - transparent progress track. this only works if
+ *                            the underlying surface supports alpha. otherwise
+ *                            theme lib's DrawThemeBackground falls back on
+ *                            opaque PP_BAR. we currently don't use this.
+ * PP_CHUNK(_VERT)          - xp progress meter. this does not draw an xp style
+ *                            progress w/chunks, it draws fill using the chunk
+ *                            graphic.
+ * vista and up:
+ * PP_FILL(_VERT)           - progress meter. these have four states/colors.
+ * PP_PULSEOVERLAY(_VERT)   - white reflection - an overlay, not sure what this
+ *                            is used for.
+ * PP_MOVEOVERLAY(_VERT)    - green pulse - the pulse effect overlay on
+ *                            determined progress bars. we also use this for
+ *                            indeterminate chunk.
+ *
+ * Notes on state constants:
+ * PBBS_NORMAL               - green progress
+ * PBBVS_PARTIAL/PBFVS_ERROR - red error progress
+ * PBFS_PAUSED               - yellow paused progress
+ *
+ * There is no common controls style indeterminate part on vista and up.
+ */
+
+/*
+ * Progress bar related constants. These values are found by experimenting and
+ * comparing against native widgets used by the system. They are very unlikely
+ * exact but try to not be too wrong.
+ */
+// The amount of time we animate progress meters parts across the frame.
+static const double kProgressDeterminateTimeSpan = 3.0;
+static const double kProgressIndeterminateTimeSpan = 5.0;
+// The width of the overlay used to animate the horizontal progress bar (Vista
+// and later).
+static const int32_t kProgressHorizontalOverlaySize = 120;
+// The height of the overlay used to animate the vertical progress bar (Vista
+// and later).
+static const int32_t kProgressVerticalOverlaySize = 45;
+// The height of the overlay used for the vertical indeterminate progress bar
+// (Vista and later).
+static const int32_t kProgressVerticalIndeterminateOverlaySize = 60;
+// The width of the overlay used to animate the indeterminate progress bar
+// (Windows Classic).
+static const int32_t kProgressClassicOverlaySize = 40;
+
+/*
+ * GetProgressOverlayStyle - returns the proper overlay part for themed
+ * progress bars based on os and orientation.
+ */
+static int32_t GetProgressOverlayStyle(bool aIsVertical) {
+  return aIsVertical ? PP_MOVEOVERLAYVERT : PP_MOVEOVERLAY;
+}
+
+/*
+ * GetProgressOverlaySize - returns the minimum width or height for themed
+ * progress bar overlays. This includes the width of indeterminate chunks
+ * and vista pulse overlays.
+ */
+static int32_t GetProgressOverlaySize(bool aIsVertical, bool aIsIndeterminate) {
+  if (aIsVertical) {
+    return aIsIndeterminate ? kProgressVerticalIndeterminateOverlaySize
+                            : kProgressVerticalOverlaySize;
+  }
+  return kProgressHorizontalOverlaySize;
+}
+
+/*
+ * IsProgressMeterFilled - Determines if a progress meter is at 100% fill based
+ * on a comparison of the current value and maximum.
+ */
+static bool IsProgressMeterFilled(nsIFrame* aFrame) {
+  NS_ENSURE_TRUE(aFrame, false);
+  nsIFrame* parentFrame = aFrame->GetParent();
+  NS_ENSURE_TRUE(parentFrame, false);
+  return nsNativeTheme::GetProgressValue(parentFrame) ==
+         nsNativeTheme::GetProgressMaxValue(parentFrame);
+}
+
+/*
+ * CalculateProgressOverlayRect - returns the padded overlay animation rect
+ * used in rendering progress bars. Resulting rects are used in rendering
+ * vista+ pulse overlays and indeterminate progress meters. Graphics should
+ * be rendered at the origin.
+ */
+RECT nsNativeThemeWin::CalculateProgressOverlayRect(nsIFrame* aFrame,
+                                                    RECT* aWidgetRect,
+                                                    bool aIsVertical,
+                                                    bool aIsIndeterminate,
+                                                    bool aIsClassic) {
+  NS_ASSERTION(aFrame, "bad frame pointer");
+  NS_ASSERTION(aWidgetRect, "bad rect pointer");
+
+  int32_t frameSize = aIsVertical ? aWidgetRect->bottom - aWidgetRect->top
+                                  : aWidgetRect->right - aWidgetRect->left;
+
+  // Recycle a set of progress pulse timers - these timers control the position
+  // of all progress overlays and indeterminate chunks that get rendered.
+  double span = aIsIndeterminate ? kProgressIndeterminateTimeSpan
+                                 : kProgressDeterminateTimeSpan;
+  TimeDuration period;
+  if (!aIsIndeterminate) {
+    if (TimeStamp::Now() >
+        (mProgressDeterminateTimeStamp + TimeDuration::FromSeconds(span))) {
+      mProgressDeterminateTimeStamp = TimeStamp::Now();
+    }
+    period = TimeStamp::Now() - mProgressDeterminateTimeStamp;
+  } else {
+    if (TimeStamp::Now() >
+        (mProgressIndeterminateTimeStamp + TimeDuration::FromSeconds(span))) {
+      mProgressIndeterminateTimeStamp = TimeStamp::Now();
+    }
+    period = TimeStamp::Now() - mProgressIndeterminateTimeStamp;
+  }
+
+  double percent = period / TimeDuration::FromSeconds(span);
+
+  if (!aIsVertical && IsFrameRTL(aFrame)) percent = 1 - percent;
+
+  RECT overlayRect = *aWidgetRect;
+  int32_t overlaySize;
+  if (!aIsClassic) {
+    overlaySize = GetProgressOverlaySize(aIsVertical, aIsIndeterminate);
+  } else {
+    overlaySize = kProgressClassicOverlaySize;
+  }
+
+  // Calculate a bounds that is larger than the meters frame such that the
+  // overlay starts and ends completely off the edge of the frame:
+  // [overlay][frame][overlay]
+  // This also yields a nice delay on rotation. Use overlaySize as the minimum
+  // size for [overlay] based on the graphics dims. If [frame] is larger, use
+  // the frame size instead.
+  int trackWidth = frameSize > overlaySize ? frameSize : overlaySize;
+  if (!aIsVertical) {
+    int xPos = aWidgetRect->left - trackWidth;
+    xPos += (int)ceil(((double)(trackWidth * 2) * percent));
+    overlayRect.left = xPos;
+    overlayRect.right = xPos + overlaySize;
+  } else {
+    int yPos = aWidgetRect->bottom + trackWidth;
+    yPos -= (int)ceil(((double)(trackWidth * 2) * percent));
+    overlayRect.bottom = yPos;
+    overlayRect.top = yPos - overlaySize;
+  }
+  return overlayRect;
+}
+
+/*
+ * DrawProgressMeter - render an appropriate progress meter based on progress
+ * meter style, orientation, and os. Note, this does not render the underlying
+ * progress track.
+ *
+ * @param aFrame       the widget frame
+ * @param aAppearance  type of widget
+ * @param aTheme       progress theme handle
+ * @param aHdc         hdc returned by gfxWindowsNativeDrawing
+ * @param aPart        the PP_X progress part
+ * @param aState       the theme state
+ * @param aWidgetRect  bounding rect for the widget
+ * @param aClipRect    dirty rect that needs drawing.
+ * @param aAppUnits    app units per device pixel
+ */
+void nsNativeThemeWin::DrawThemedProgressMeter(
+    nsIFrame* aFrame, StyleAppearance aAppearance, HANDLE aTheme, HDC aHdc,
+    int aPart, int aState, RECT* aWidgetRect, RECT* aClipRect) {
+  if (!aFrame || !aTheme || !aHdc) return;
+
+  NS_ASSERTION(aWidgetRect, "bad rect pointer");
+  NS_ASSERTION(aClipRect, "bad clip rect pointer");
+
+  RECT adjWidgetRect, adjClipRect;
+  adjWidgetRect = *aWidgetRect;
+  adjClipRect = *aClipRect;
+
+  nsIFrame* parentFrame = aFrame->GetParent();
+  if (!parentFrame) {
+    // We have no parent to work with, just bail.
+    NS_WARNING("No parent frame for progress rendering. Can't paint.");
+    return;
+  }
+
+  ElementState elementState = GetContentState(parentFrame, aAppearance);
+  bool vertical = IsVerticalProgress(parentFrame);
+  bool indeterminate = elementState.HasState(ElementState::INDETERMINATE);
+  bool animate = indeterminate;
+
+  // Vista and up progress meter is fill style, rendered here. We render
+  // the pulse overlay in the follow up section below.
+  DrawThemeBackground(aTheme, aHdc, aPart, aState, &adjWidgetRect,
+                      &adjClipRect);
+  if (!IsProgressMeterFilled(aFrame)) {
+    animate = true;
+  }
+
+  if (animate) {
+    // Indeterminate rendering
+    int32_t overlayPart = GetProgressOverlayStyle(vertical);
+    RECT overlayRect = CalculateProgressOverlayRect(
+        aFrame, &adjWidgetRect, vertical, indeterminate, false);
+    DrawThemeBackground(aTheme, aHdc, overlayPart, aState, &overlayRect,
+                        &adjClipRect);
+
+    if (!QueueAnimatedContentForRefresh(aFrame->GetContent(), 60)) {
+      NS_WARNING("unable to animate progress widget!");
+    }
+  }
+}
+
+LayoutDeviceIntMargin nsNativeThemeWin::GetCachedWidgetBorder(
+    HTHEME aTheme, nsUXThemeClass aThemeClass, StyleAppearance aAppearance,
+    int32_t aPart, int32_t aState) {
+  int32_t cacheIndex = aThemeClass * THEME_PART_DISTINCT_VALUE_COUNT + aPart;
+  int32_t cacheBitIndex = cacheIndex / 8;
+  uint8_t cacheBit = 1u << (cacheIndex % 8);
+
+  if (mBorderCacheValid[cacheBitIndex] & cacheBit) {
+    return mBorderCache[cacheIndex];
+  }
+
+  // Get our info.
+  RECT outerRect;  // Create a fake outer rect.
+  outerRect.top = outerRect.left = 100;
+  outerRect.right = outerRect.bottom = 200;
+  RECT contentRect(outerRect);
+  HRESULT res = GetThemeBackgroundContentRect(aTheme, nullptr, aPart, aState,
+                                              &outerRect, &contentRect);
+
+  if (FAILED(res)) {
+    return LayoutDeviceIntMargin();
+  }
+
+  // Now compute the delta in each direction and place it in our
+  // nsIntMargin struct.
+  LayoutDeviceIntMargin result;
+  result.top = contentRect.top - outerRect.top;
+  result.bottom = outerRect.bottom - contentRect.bottom;
+  result.left = contentRect.left - outerRect.left;
+  result.right = outerRect.right - contentRect.right;
+
+  mBorderCacheValid[cacheBitIndex] |= cacheBit;
+  mBorderCache[cacheIndex] = result;
+
+  return result;
+}
+
+nsresult nsNativeThemeWin::GetCachedMinimumWidgetSize(
+    nsIFrame* aFrame, HANDLE aTheme, nsUXThemeClass aThemeClass,
+    StyleAppearance aAppearance, int32_t aPart, int32_t aState,
+    THEMESIZE aSizeReq, mozilla::LayoutDeviceIntSize* aResult) {
+  int32_t cachePart = aPart;
+
+  if (aAppearance == StyleAppearance::Button && aSizeReq == TS_MIN) {
+    // In practice, StyleAppearance::Button is the only widget type which has an
+    // aSizeReq that varies for us, and it can only be TS_MIN or TS_TRUE. Just
+    // stuff that extra bit into the aPart part of the cache, since BP_Count is
+    // well below THEME_PART_DISTINCT_VALUE_COUNT anyway.
+    cachePart = BP_Count;
+  }
+
+  MOZ_ASSERT(aPart < THEME_PART_DISTINCT_VALUE_COUNT);
+  int32_t cacheIndex =
+      aThemeClass * THEME_PART_DISTINCT_VALUE_COUNT + cachePart;
+  int32_t cacheBitIndex = cacheIndex / 8;
+  uint8_t cacheBit = 1u << (cacheIndex % 8);
+
+  if (mMinimumWidgetSizeCacheValid[cacheBitIndex] & cacheBit) {
+    *aResult = mMinimumWidgetSizeCache[cacheIndex];
+    return NS_OK;
+  }
+
+  HDC hdc = ::GetDC(NULL);
+  if (!hdc) {
+    return NS_ERROR_FAILURE;
+  }
+
+  SIZE sz;
+  GetThemePartSize(aTheme, hdc, aPart, aState, nullptr, aSizeReq, &sz);
+  aResult->width = sz.cx;
+  aResult->height = sz.cy;
+
+  ::ReleaseDC(nullptr, hdc);
+
+  mMinimumWidgetSizeCacheValid[cacheBitIndex] |= cacheBit;
+  mMinimumWidgetSizeCache[cacheIndex] = *aResult;
+
+  return NS_OK;
+}
+
+mozilla::Maybe<nsUXThemeClass> nsNativeThemeWin::GetThemeClass(
+    StyleAppearance aAppearance) {
+  switch (aAppearance) {
+    case StyleAppearance::Button:
+      return Some(eUXButton);
+    case StyleAppearance::NumberInput:
+    case StyleAppearance::Textfield:
+    case StyleAppearance::Textarea:
+      return Some(eUXEdit);
+    case StyleAppearance::Toolbox:
+      return Some(eUXRebar);
+    case StyleAppearance::Toolbar:
+    case StyleAppearance::Toolbarbutton:
+    case StyleAppearance::Separator:
+      return Some(eUXToolbar);
+    case StyleAppearance::ProgressBar:
+    case StyleAppearance::Progresschunk:
+      return Some(eUXProgress);
+    case StyleAppearance::Tab:
+    case StyleAppearance::Tabpanel:
+    case StyleAppearance::Tabpanels:
+      return Some(eUXTab);
+    case StyleAppearance::Range:
+    case StyleAppearance::RangeThumb:
+      return Some(eUXTrackbar);
+    case StyleAppearance::Menulist:
+    case StyleAppearance::MenulistButton:
+      return Some(eUXCombobox);
+    case StyleAppearance::Treeheadercell:
+      return Some(eUXHeader);
+    case StyleAppearance::Listbox:
+    case StyleAppearance::Treeview:
+    case StyleAppearance::Treetwistyopen:
+    case StyleAppearance::Treeitem:
+      return Some(eUXListview);
+    default:
+      return Nothing();
+  }
+}
+
+HANDLE
+nsNativeThemeWin::GetTheme(StyleAppearance aAppearance) {
+  mozilla::Maybe<nsUXThemeClass> themeClass = GetThemeClass(aAppearance);
+  if (themeClass.isNothing()) {
+    return nullptr;
+  }
+  return nsUXThemeData::GetTheme(themeClass.value());
+}
+
+int32_t nsNativeThemeWin::StandardGetState(nsIFrame* aFrame,
+                                           StyleAppearance aAppearance,
+                                           bool wantFocused) {
+  ElementState elementState = GetContentState(aFrame, aAppearance);
+  if (elementState.HasAllStates(ElementState::HOVER | ElementState::ACTIVE)) {
+    return TS_ACTIVE;
+  }
+  if (elementState.HasState(ElementState::HOVER)) {
+    return TS_HOVER;
+  }
+  if (wantFocused) {
+    if (elementState.HasState(ElementState::FOCUSRING)) {
+      return TS_FOCUSED;
+    }
+    // On Windows, focused buttons are always drawn as such by the native
+    // theme, that's why we check ElementState::FOCUS instead of
+    // ElementState::FOCUSRING.
+    if (aAppearance == StyleAppearance::Button &&
+        elementState.HasState(ElementState::FOCUS)) {
+      return TS_FOCUSED;
+    }
+  }
+
+  return TS_NORMAL;
+}
+
+bool nsNativeThemeWin::IsMenuActive(nsIFrame* aFrame,
+                                    StyleAppearance aAppearance) {
+  nsIContent* content = aFrame->GetContent();
+  if (content->IsXULElement() &&
+      content->NodeInfo()->Equals(nsGkAtoms::richlistitem))
+    return CheckBooleanAttr(aFrame, nsGkAtoms::selected);
+
+  return CheckBooleanAttr(aFrame, nsGkAtoms::menuactive);
+}
+
+/**
+ * aPart is filled in with the UXTheme part code. On return, values > 0
+ * are the actual UXTheme part code; -1 means the widget will be drawn by
+ * us; 0 means that we should use part code 0, which isn't a real part code
+ * but elicits some kind of default behaviour from UXTheme when drawing
+ * (but isThemeBackgroundPartiallyTransparent may not work).
+ */
+nsresult nsNativeThemeWin::GetThemePartAndState(nsIFrame* aFrame,
+                                                StyleAppearance aAppearance,
+                                                int32_t& aPart,
+                                                int32_t& aState) {
+  switch (aAppearance) {
+    case StyleAppearance::Button: {
+      aPart = BP_BUTTON;
+      if (!aFrame) {
+        aState = TS_NORMAL;
+        return NS_OK;
+      }
+
+      ElementState elementState = GetContentState(aFrame, aAppearance);
+      if (elementState.HasState(ElementState::DISABLED)) {
+        aState = TS_DISABLED;
+        return NS_OK;
+      }
+      if (IsOpenButton(aFrame) || IsCheckedButton(aFrame)) {
+        aState = TS_ACTIVE;
+        return NS_OK;
+      }
+
+      aState = StandardGetState(aFrame, aAppearance, true);
+
+      // Check for default dialog buttons.  These buttons should always look
+      // focused.
+      if (aState == TS_NORMAL && IsDefaultButton(aFrame)) aState = TS_FOCUSED;
+      return NS_OK;
+    }
+    case StyleAppearance::NumberInput:
+    case StyleAppearance::Textfield:
+    case StyleAppearance::Textarea: {
+      ElementState elementState = GetContentState(aFrame, aAppearance);
+
+      /* Note: the NOSCROLL type has a rounded corner in each corner.  The more
+       * specific HSCROLL, VSCROLL, HVSCROLL types have side and/or top/bottom
+       * edges rendered as straight horizontal lines with sharp corners to
+       * accommodate a scrollbar.  However, the scrollbar gets rendered on top
+       * of this for us, so we don't care, and can just use NOSCROLL here.
+       */
+      aPart = TFP_EDITBORDER_NOSCROLL;
+
+      if (!aFrame) {
+        aState = TFS_EDITBORDER_NORMAL;
+      } else if (elementState.HasState(ElementState::DISABLED)) {
+        aState = TFS_EDITBORDER_DISABLED;
+      } else if (IsReadOnly(aFrame)) {
+        /* no special read-only state */
+        aState = TFS_EDITBORDER_NORMAL;
+      } else if (elementState.HasAtLeastOneOfStates(ElementState::ACTIVE |
+                                                    ElementState::FOCUSRING)) {
+        aState = TFS_EDITBORDER_FOCUSED;
+      } else if (elementState.HasState(ElementState::HOVER)) {
+        aState = TFS_EDITBORDER_HOVER;
+      } else {
+        aState = TFS_EDITBORDER_NORMAL;
+      }
+
+      return NS_OK;
+    }
+    case StyleAppearance::ProgressBar: {
+      bool vertical = IsVerticalProgress(aFrame);
+      aPart = vertical ? PP_BARVERT : PP_BAR;
+      aState = PBBS_NORMAL;
+      return NS_OK;
+    }
+    case StyleAppearance::Progresschunk: {
+      nsIFrame* parentFrame = aFrame->GetParent();
+      if (IsVerticalProgress(parentFrame)) {
+        aPart = PP_FILLVERT;
+      } else {
+        aPart = PP_FILL;
+      }
+
+      aState = PBBVS_NORMAL;
+      return NS_OK;
+    }
+    case StyleAppearance::Toolbarbutton: {
+      aPart = BP_BUTTON;
+      if (!aFrame) {
+        aState = TS_NORMAL;
+        return NS_OK;
+      }
+
+      ElementState elementState = GetContentState(aFrame, aAppearance);
+      if (elementState.HasState(ElementState::DISABLED)) {
+        aState = TS_DISABLED;
+        return NS_OK;
+      }
+      if (IsOpenButton(aFrame)) {
+        aState = TS_ACTIVE;
+        return NS_OK;
+      }
+
+      if (elementState.HasAllStates(ElementState::HOVER | ElementState::ACTIVE))
+        aState = TS_ACTIVE;
+      else if (elementState.HasState(ElementState::HOVER)) {
+        if (IsCheckedButton(aFrame))
+          aState = TB_HOVER_CHECKED;
+        else
+          aState = TS_HOVER;
+      } else {
+        if (IsCheckedButton(aFrame))
+          aState = TB_CHECKED;
+        else
+          aState = TS_NORMAL;
+      }
+
+      return NS_OK;
+    }
+    case StyleAppearance::Separator: {
+      aPart = TP_SEPARATOR;
+      aState = TS_NORMAL;
+      return NS_OK;
+    }
+    case StyleAppearance::Range: {
+      if (IsRangeHorizontal(aFrame)) {
+        aPart = TKP_TRACK;
+        aState = TRS_NORMAL;
+      } else {
+        aPart = TKP_TRACKVERT;
+        aState = TRVS_NORMAL;
+      }
+      return NS_OK;
+    }
+    case StyleAppearance::RangeThumb: {
+      if (IsRangeHorizontal(aFrame)) {
+        aPart = TKP_THUMBBOTTOM;
+      } else {
+        aPart = IsFrameRTL(aFrame) ? TKP_THUMBLEFT : TKP_THUMBRIGHT;
+      }
+      ElementState elementState = GetContentState(aFrame, aAppearance);
+      if (!aFrame) {
+        aState = TS_NORMAL;
+      } else if (elementState.HasState(ElementState::DISABLED)) {
+        aState = TKP_DISABLED;
+      } else {
+        if (elementState.HasState(
+                ElementState::ACTIVE))  // Hover is not also a requirement for
+                                        // the thumb, since the drag is not
+                                        // canceled when you move outside the
+                                        // thumb.
+          aState = TS_ACTIVE;
+        else if (elementState.HasState(ElementState::FOCUSRING))
+          aState = TKP_FOCUSED;
+        else if (elementState.HasState(ElementState::HOVER))
+          aState = TS_HOVER;
+        else
+          aState = TS_NORMAL;
+      }
+      return NS_OK;
+    }
+    case StyleAppearance::Toolbox: {
+      aState = 0;
+      aPart = RP_BACKGROUND;
+      return NS_OK;
+    }
+    case StyleAppearance::Toolbar: {
+      // Use -1 to indicate we don't wish to have the theme background drawn
+      // for this item. We will pass any nessessary information via aState,
+      // and will render the item using separate code.
+      aPart = -1;
+      aState = 0;
+      if (aFrame) {
+        nsIContent* content = aFrame->GetContent();
+        nsIContent* parent = content->GetParent();
+        // XXXzeniko hiding the first toolbar will result in an unwanted margin
+        if (parent && parent->GetFirstChild() == content) {
+          aState = 1;
+        }
+      }
+      return NS_OK;
+    }
+    case StyleAppearance::Treeview:
+    case StyleAppearance::Listbox: {
+      aPart = TREEVIEW_BODY;
+      aState = TS_NORMAL;
+      return NS_OK;
+    }
+    case StyleAppearance::Tabpanels: {
+      aPart = TABP_PANELS;
+      aState = TS_NORMAL;
+      return NS_OK;
+    }
+    case StyleAppearance::Tabpanel: {
+      aPart = TABP_PANEL;
+      aState = TS_NORMAL;
+      return NS_OK;
+    }
+    case StyleAppearance::Tab: {
+      aPart = TABP_TAB;
+      if (!aFrame) {
+        aState = TS_NORMAL;
+        return NS_OK;
+      }
+
+      ElementState elementState = GetContentState(aFrame, aAppearance);
+      if (elementState.HasState(ElementState::DISABLED)) {
+        aState = TS_DISABLED;
+        return NS_OK;
+      }
+
+      if (IsSelectedTab(aFrame)) {
+        aPart = TABP_TAB_SELECTED;
+        aState = TS_ACTIVE;  // The selected tab is always "pressed".
+      } else
+        aState = StandardGetState(aFrame, aAppearance, true);
+
+      return NS_OK;
+    }
+    case StyleAppearance::Treeheadercell: {
+      aPart = 1;
+      if (!aFrame) {
+        aState = TS_NORMAL;
+        return NS_OK;
+      }
+
+      aState = StandardGetState(aFrame, aAppearance, true);
+
+      return NS_OK;
+    }
+    case StyleAppearance::MenulistButton:
+    case StyleAppearance::Menulist: {
+      nsIContent* content = aFrame->GetContent();
+      bool useDropBorder = content && content->IsHTMLElement();
+      ElementState elementState = GetContentState(aFrame, aAppearance);
+
+      /* On Vista/Win7, we use CBP_DROPBORDER instead of DROPFRAME for HTML
+       * content or for editable menulists; this gives us the thin outline,
+       * instead of the gradient-filled background */
+      if (useDropBorder)
+        aPart = CBP_DROPBORDER;
+      else
+        aPart = CBP_DROPFRAME;
+
+      if (elementState.HasState(ElementState::DISABLED)) {
+        aState = TS_DISABLED;
+      } else if (IsReadOnly(aFrame)) {
+        aState = TS_NORMAL;
+      } else if (IsOpenButton(aFrame)) {
+        aState = TS_ACTIVE;
+      } else if (useDropBorder &&
+                 elementState.HasState(ElementState::FOCUSRING)) {
+        aState = TS_ACTIVE;
+      } else if (elementState.HasAllStates(ElementState::HOVER |
+                                           ElementState::ACTIVE)) {
+        aState = TS_ACTIVE;
+      } else if (elementState.HasState(ElementState::HOVER)) {
+        aState = TS_HOVER;
+      } else {
+        aState = TS_NORMAL;
+      }
+
+      return NS_OK;
+    }
+    default:
+      aPart = 0;
+      aState = 0;
+      return NS_ERROR_FAILURE;
+  }
+}
+
+static bool AssumeThemePartAndStateAreTransparent(int32_t aPart,
+                                                  int32_t aState) {
+  if (!nsUXThemeData::IsHighContrastOn() && aPart == MENU_POPUPITEM &&
+      aState == MBI_NORMAL) {
+    return true;
+  }
+  return false;
+}
+
+// When running with per-monitor DPI (on Win8.1+), and rendering on a display
+// with a different DPI setting from the system's default scaling, we need to
+// apply scaling to native-themed elements as the Windows theme APIs assume
+// the system default resolution.
+static inline double GetThemeDpiScaleFactor(nsPresContext* aPresContext) {
+  if (WinUtils::IsPerMonitorDPIAware() ||
+      StaticPrefs::layout_css_devPixelsPerPx() > 0.0) {
+    nsCOMPtr<nsIWidget> rootWidget = aPresContext->GetRootWidget();
+    if (rootWidget) {
+      double systemScale = WinUtils::SystemScaleFactor();
+      return rootWidget->GetDefaultScale().scale / systemScale;
+    }
+  }
+  return 1.0;
+}
+
+static inline double GetThemeDpiScaleFactor(nsIFrame* aFrame) {
+  return GetThemeDpiScaleFactor(aFrame->PresContext());
+}
+
+NS_IMETHODIMP
+nsNativeThemeWin::DrawWidgetBackground(gfxContext* aContext, nsIFrame* aFrame,
+                                       StyleAppearance aAppearance,
+                                       const nsRect& aRect,
+                                       const nsRect& aDirtyRect,
+                                       DrawOverflow aDrawOverflow) {
+  if (IsWidgetNonNative(aFrame, aAppearance) != NonNative::No) {
+    return Theme::DrawWidgetBackground(aContext, aFrame, aAppearance, aRect,
+                                       aDirtyRect, aDrawOverflow);
+  }
+
+  HANDLE theme = GetTheme(aAppearance);
+  if (!theme)
+    return ClassicDrawWidgetBackground(aContext, aFrame, aAppearance, aRect,
+                                       aDirtyRect);
+
+  // ^^ without the right sdk, assume xp theming and fall through.
+  int32_t part, state;
+  nsresult rv = GetThemePartAndState(aFrame, aAppearance, part, state);
+  if (NS_FAILED(rv)) return rv;
+
+  if (AssumeThemePartAndStateAreTransparent(part, state)) {
+    return NS_OK;
+  }
+
+  gfxContextMatrixAutoSaveRestore save(aContext);
+
+  double themeScale = GetThemeDpiScaleFactor(aFrame);
+  if (themeScale != 1.0) {
+    aContext->SetMatrix(
+        aContext->CurrentMatrix().PreScale(themeScale, themeScale));
+  }
+
+  gfxFloat p2a = gfxFloat(aFrame->PresContext()->AppUnitsPerDevPixel());
+  RECT widgetRect;
+  RECT clipRect;
+  gfxRect tr(aRect.X(), aRect.Y(), aRect.Width(), aRect.Height()),
+      dr(aDirtyRect.X(), aDirtyRect.Y(), aDirtyRect.Width(),
+         aDirtyRect.Height());
+
+  tr.Scale(1.0 / (p2a * themeScale));
+  dr.Scale(1.0 / (p2a * themeScale));
+
+  gfxWindowsNativeDrawing nativeDrawing(
+      aContext, dr, GetWidgetNativeDrawingFlags(aAppearance));
+
+RENDER_AGAIN:
+
+  HDC hdc = nativeDrawing.BeginNativeDrawing();
+  if (!hdc) return NS_ERROR_FAILURE;
+
+  nativeDrawing.TransformToNativeRect(tr, widgetRect);
+  nativeDrawing.TransformToNativeRect(dr, clipRect);
+
+#if 0
+  {
+    MOZ_LOG(gWindowsLog, LogLevel::Error,
+           (stderr, "xform: %f %f %f %f [%f %f]\n", m._11, m._21, m._12, m._22,
+            m._31, m._32));
+    MOZ_LOG(gWindowsLog, LogLevel::Error,
+           (stderr, "tr: [%d %d %d %d]\ndr: [%d %d %d %d]\noff: [%f %f]\n",
+            tr.x, tr.y, tr.width, tr.height, dr.x, dr.y, dr.width, dr.height,
+            offset.x, offset.y));
+  }
+#endif
+
+  if (aAppearance == StyleAppearance::Tab) {
+    // For left edge and right edge tabs, we need to adjust the widget
+    // rects and clip rects so that the edges don't get drawn.
+    bool isLeft = IsLeftToSelectedTab(aFrame);
+    bool isRight = !isLeft && IsRightToSelectedTab(aFrame);
+
+    if (isLeft || isRight) {
+      // HACK ALERT: There appears to be no way to really obtain this value, so
+      // we're forced to just use the default value for Luna (which also happens
+      // to be correct for all the other skins I've tried).
+      int32_t edgeSize = 2;
+
+      // Armed with the size of the edge, we now need to either shift to the
+      // left or to the right.  The clip rect won't include this extra area, so
+      // we know that we're effectively shifting the edge out of view (such that
+      // it won't be painted).
+      if (isLeft)
+        // The right edge should not be drawn.  Extend our rect by the edge
+        // size.
+        widgetRect.right += edgeSize;
+      else
+        // The left edge should not be drawn.  Move the widget rect's left coord
+        // back.
+        widgetRect.left -= edgeSize;
+    }
+  }
+
+  // widgetRect is the bounding box for a widget, yet the scale track is only
+  // a small portion of this size, so the edges of the scale need to be
+  // adjusted to the real size of the track.
+  if (aAppearance == StyleAppearance::Range) {
+    RECT contentRect;
+    GetThemeBackgroundContentRect(theme, hdc, part, state, &widgetRect,
+                                  &contentRect);
+
+    SIZE siz;
+    GetThemePartSize(theme, hdc, part, state, &widgetRect, TS_TRUE, &siz);
+
+    // When rounding is necessary, we round the position of the track
+    // away from the chevron of the thumb to make it look better.
+    if (IsRangeHorizontal(aFrame)) {
+      contentRect.top += (contentRect.bottom - contentRect.top - siz.cy) / 2;
+      contentRect.bottom = contentRect.top + siz.cy;
+    } else {
+      if (!IsFrameRTL(aFrame)) {
+        contentRect.left += (contentRect.right - contentRect.left - siz.cx) / 2;
+        contentRect.right = contentRect.left + siz.cx;
+      } else {
+        contentRect.right -=
+            (contentRect.right - contentRect.left - siz.cx) / 2;
+        contentRect.left = contentRect.right - siz.cx;
+      }
+    }
+
+    DrawThemeBackground(theme, hdc, part, state, &contentRect, &clipRect);
+  } else if (aAppearance == StyleAppearance::NumberInput ||
+             aAppearance == StyleAppearance::Textfield ||
+             aAppearance == StyleAppearance::Textarea) {
+    DrawThemeBackground(theme, hdc, part, state, &widgetRect, &clipRect);
+
+    if (state == TFS_EDITBORDER_DISABLED) {
+      InflateRect(&widgetRect, -1, -1);
+      ::FillRect(hdc, &widgetRect, reinterpret_cast<HBRUSH>(COLOR_BTNFACE + 1));
+    }
+  } else if (aAppearance == StyleAppearance::ProgressBar) {
+    // DrawThemeBackground renders each corner with a solid white pixel.
+    // Restore these pixels to the underlying color. Tracks are rendered
+    // using alpha recovery, so this makes the corners transparent.
+    COLORREF color;
+    color = GetPixel(hdc, widgetRect.left, widgetRect.top);
+    DrawThemeBackground(theme, hdc, part, state, &widgetRect, &clipRect);
+    SetPixel(hdc, widgetRect.left, widgetRect.top, color);
+    SetPixel(hdc, widgetRect.right - 1, widgetRect.top, color);
+    SetPixel(hdc, widgetRect.right - 1, widgetRect.bottom - 1, color);
+    SetPixel(hdc, widgetRect.left, widgetRect.bottom - 1, color);
+  } else if (aAppearance == StyleAppearance::Progresschunk) {
+    DrawThemedProgressMeter(aFrame, aAppearance, theme, hdc, part, state,
+                            &widgetRect, &clipRect);
+  }
+  // If part is negative, the element wishes us to not render a themed
+  // background, instead opting to be drawn specially below.
+  else if (part >= 0) {
+    DrawThemeBackground(theme, hdc, part, state, &widgetRect, &clipRect);
+  }
+
+  // Draw focus rectangles for range elements
+  // XXX it'd be nice to draw these outside of the frame
+  if (aAppearance == StyleAppearance::Range) {
+    ElementState contentState = GetContentState(aFrame, aAppearance);
+
+    if (contentState.HasState(ElementState::FOCUSRING)) {
+      POINT vpOrg;
+      HPEN hPen = nullptr;
+
+      uint8_t id = SaveDC(hdc);
+
+      ::SelectClipRgn(hdc, nullptr);
+      ::GetViewportOrgEx(hdc, &vpOrg);
+      ::SetBrushOrgEx(hdc, vpOrg.x + widgetRect.left, vpOrg.y + widgetRect.top,
+                      nullptr);
+      ::SetTextColor(hdc, 0);
+      ::DrawFocusRect(hdc, &widgetRect);
+      ::RestoreDC(hdc, id);
+      if (hPen) {
+        ::DeleteObject(hPen);
+      }
+    }
+  } else if (aAppearance == StyleAppearance::Toolbar && state == 0) {
+    // Draw toolbar separator lines above all toolbars except the first one.
+    // The lines are part of the Rebar theme, which is loaded for
+    // StyleAppearance::Toolbox.
+    theme = GetTheme(StyleAppearance::Toolbox);
+    if (!theme) return NS_ERROR_FAILURE;
+
+    widgetRect.bottom = widgetRect.top + TB_SEPARATOR_HEIGHT;
+    DrawThemeEdge(theme, hdc, RP_BAND, 0, &widgetRect, EDGE_ETCHED, BF_TOP,
+                  nullptr);
+  }
+
+  nativeDrawing.EndNativeDrawing();
+
+  if (nativeDrawing.ShouldRenderAgain()) goto RENDER_AGAIN;
+
+  nativeDrawing.PaintToContext();
+
+  return NS_OK;
+}
+
+bool nsNativeThemeWin::CreateWebRenderCommandsForWidget(
+    wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
+    const layers::StackingContextHelper& aSc,
+    layers::RenderRootStateManager* aManager, nsIFrame* aFrame,
+    StyleAppearance aAppearance, const nsRect& aRect) {
+  if (IsWidgetNonNative(aFrame, aAppearance) != NonNative::No) {
+    return Theme::CreateWebRenderCommandsForWidget(
+        aBuilder, aResources, aSc, aManager, aFrame, aAppearance, aRect);
+  }
+  return false;
+}
+
+static void ScaleForFrameDPI(LayoutDeviceIntMargin* aMargin, nsIFrame* aFrame) {
+  double themeScale = GetThemeDpiScaleFactor(aFrame);
+  if (themeScale != 1.0) {
+    aMargin->top = NSToIntRound(aMargin->top * themeScale);
+    aMargin->left = NSToIntRound(aMargin->left * themeScale);
+    aMargin->bottom = NSToIntRound(aMargin->bottom * themeScale);
+    aMargin->right = NSToIntRound(aMargin->right * themeScale);
+  }
+}
+
+static void ScaleForFrameDPI(LayoutDeviceIntSize* aSize, nsIFrame* aFrame) {
+  double themeScale = GetThemeDpiScaleFactor(aFrame);
+  if (themeScale != 1.0) {
+    aSize->width = NSToIntRound(aSize->width * themeScale);
+    aSize->height = NSToIntRound(aSize->height * themeScale);
+  }
+}
+
+LayoutDeviceIntMargin nsNativeThemeWin::GetWidgetBorder(
+    nsDeviceContext* aContext, nsIFrame* aFrame, StyleAppearance aAppearance) {
+  if (IsWidgetAlwaysNonNative(aFrame, aAppearance)) {
+    return Theme::GetWidgetBorder(aContext, aFrame, aAppearance);
+  }
+
+  LayoutDeviceIntMargin result;
+  mozilla::Maybe<nsUXThemeClass> themeClass = GetThemeClass(aAppearance);
+  HTHEME theme = NULL;
+  if (!themeClass.isNothing()) {
+    theme = nsUXThemeData::GetTheme(themeClass.value());
+  }
+  if (!theme) {
+    result = ClassicGetWidgetBorder(aContext, aFrame, aAppearance);
+    ScaleForFrameDPI(&result, aFrame);
+    return result;
+  }
+
+  if (!WidgetIsContainer(aAppearance) ||
+      aAppearance == StyleAppearance::Toolbox ||
+      aAppearance == StyleAppearance::Tabpanel)
+    return result;  // Don't worry about it.
+
+  int32_t part, state;
+  nsresult rv = GetThemePartAndState(aFrame, aAppearance, part, state);
+  if (NS_FAILED(rv)) return result;
+
+  if (aAppearance == StyleAppearance::Toolbar) {
+    // make space for the separator line above all toolbars but the first
+    if (state == 0) result.top = TB_SEPARATOR_HEIGHT;
+    return result;
+  }
+
+  result = GetCachedWidgetBorder(theme, themeClass.value(), aAppearance, part,
+                                 state);
+
+  // Remove the edges for tabs that are before or after the selected tab,
+  if (aAppearance == StyleAppearance::Tab) {
+    if (IsLeftToSelectedTab(aFrame))
+      // Remove the right edge, since we won't be drawing it.
+      result.right = 0;
+    else if (IsRightToSelectedTab(aFrame))
+      // Remove the left edge, since we won't be drawing it.
+      result.left = 0;
+  }
+
+  if (aFrame && (aAppearance == StyleAppearance::NumberInput ||
+                 aAppearance == StyleAppearance::Textfield ||
+                 aAppearance == StyleAppearance::Textarea)) {
+    nsIContent* content = aFrame->GetContent();
+    if (content && content->IsHTMLElement()) {
+      // We need to pad textfields by 1 pixel, since the caret will draw
+      // flush against the edge by default if we don't.
+      result.top.value++;
+      result.left.value++;
+      result.bottom.value++;
+      result.right.value++;
+    }
+  }
+
+  ScaleForFrameDPI(&result, aFrame);
+  return result;
+}
+
+bool nsNativeThemeWin::GetWidgetPadding(nsDeviceContext* aContext,
+                                        nsIFrame* aFrame,
+                                        StyleAppearance aAppearance,
+                                        LayoutDeviceIntMargin* aResult) {
+  if (IsWidgetAlwaysNonNative(aFrame, aAppearance)) {
+    return Theme::GetWidgetPadding(aContext, aFrame, aAppearance, aResult);
+  }
+
+  bool ok = true;
+  HANDLE theme = GetTheme(aAppearance);
+  if (!theme) {
+    ok = ClassicGetWidgetPadding(aContext, aFrame, aAppearance, aResult);
+    ScaleForFrameDPI(aResult, aFrame);
+    return ok;
+  }
+
+  /* textfields need extra pixels on all sides, otherwise they wrap their
+   * content too tightly.  The actual border is drawn 1px inside the specified
+   * rectangle, so Gecko will end up making the contents look too small.
+   * Instead, we add 2px padding for the contents and fix this. (Used to be 1px
+   * added, see bug 430212)
+   */
+  if (aAppearance == StyleAppearance::NumberInput ||
+      aAppearance == StyleAppearance::Textfield ||
+      aAppearance == StyleAppearance::Textarea) {
+    aResult->top = aResult->bottom = 2;
+    aResult->left = aResult->right = 2;
+    ScaleForFrameDPI(aResult, aFrame);
+    return ok;
+  } else if (IsHTMLContent(aFrame) &&
+             (aAppearance == StyleAppearance::Menulist ||
+              aAppearance == StyleAppearance::MenulistButton)) {
+    /* For content menulist controls, we need an extra pixel so that we have
+     * room to draw our focus rectangle stuff. Otherwise, the focus rect might
+     * overlap the control's border.
+     */
+    aResult->top = aResult->bottom = 1;
+    aResult->left = aResult->right = 1;
+    ScaleForFrameDPI(aResult, aFrame);
+    return ok;
+  }
+
+  int32_t right, left, top, bottom;
+  right = left = top = bottom = 0;
+  switch (aAppearance) {
+    case StyleAppearance::Button:
+      if (aFrame->GetContent()->IsXULElement()) {
+        top = 2;
+        bottom = 3;
+      }
+      left = right = 5;
+      break;
+    default:
+      return false;
+  }
+
+  if (IsFrameRTL(aFrame)) {
+    aResult->right = left;
+    aResult->left = right;
+  } else {
+    aResult->right = right;
+    aResult->left = left;
+  }
+  aResult->top = top;
+  aResult->bottom = bottom;
+
+  ScaleForFrameDPI(aResult, aFrame);
+  return ok;
+}
+
+bool nsNativeThemeWin::GetWidgetOverflow(nsDeviceContext* aContext,
+                                         nsIFrame* aFrame,
+                                         StyleAppearance aAppearance,
+                                         nsRect* aOverflowRect) {
+  if (IsWidgetNonNative(aFrame, aAppearance) != NonNative::No) {
+    return Theme::GetWidgetOverflow(aContext, aFrame, aAppearance,
+                                    aOverflowRect);
+  }
+
+  /* This is disabled for now, because it causes invalidation problems --
+   * see bug 420381.  The effect of not updating the overflow area is that
+   * for dropdown buttons in content areas, there is a 1px border on 3 sides
+   * where, if invalidated, the dropdown control probably won't be repainted.
+   * This is fairly minor, as by default there is nothing in that area, and
+   * a border only shows up if the widget is being hovered.
+   *
+   * TODO(jwatt): Figure out what do to about
+   * StyleAppearance::MozMenulistArrowButton too.
+   */
+#if 0
+  /* We explicitly draw dropdown buttons in HTML content 1px bigger up, right,
+   * and bottom so that they overlap the dropdown's border like they're
+   * supposed to.
+   */
+  if (aAppearance == StyleAppearance::MenulistButton &&
+      IsHTMLContent(aFrame) &&
+      !IsWidgetStyled(aFrame->GetParent()->PresContext(),
+                      aFrame->GetParent(),
+                      StyleAppearance::Menulist))
+  {
+    int32_t p2a = aContext->AppUnitsPerDevPixel();
+    /* Note: no overflow on the left */
+    nsMargin m(p2a, p2a, p2a, 0);
+    aOverflowRect->Inflate (m);
+    return true;
+  }
+#endif
+
+  return false;
+}
+
+LayoutDeviceIntSize nsNativeThemeWin::GetMinimumWidgetSize(
+    nsPresContext* aPresContext, nsIFrame* aFrame,
+    StyleAppearance aAppearance) {
+  if (IsWidgetAlwaysNonNative(aFrame, aAppearance)) {
+    return Theme::GetMinimumWidgetSize(aPresContext, aFrame, aAppearance);
+  }
+
+  mozilla::Maybe<nsUXThemeClass> themeClass = GetThemeClass(aAppearance);
+  HTHEME theme = NULL;
+  if (!themeClass.isNothing()) {
+    theme = nsUXThemeData::GetTheme(themeClass.value());
+  }
+  if (!theme) {
+    auto result = ClassicGetMinimumWidgetSize(aFrame, aAppearance);
+    ScaleForFrameDPI(&result, aFrame);
+    return result;
+  }
+
+  switch (aAppearance) {
+    case StyleAppearance::NumberInput:
+    case StyleAppearance::Textfield:
+    case StyleAppearance::Toolbox:
+    case StyleAppearance::Toolbar:
+    case StyleAppearance::Progresschunk:
+    case StyleAppearance::Tabpanels:
+    case StyleAppearance::Tabpanel:
+    case StyleAppearance::Listbox:
+    case StyleAppearance::Treeview:
+      return {};  // Don't worry about it.
+    default:
+      break;
+  }
+
+  // Call GetSystemMetrics to determine size for WinXP scrollbars
+  // (GetThemeSysSize API returns the optimal size for the theme, but
+  //  Windows appears to always use metrics when drawing standard scrollbars)
+  THEMESIZE sizeReq = TS_TRUE;  // Best-fit size
+  switch (aAppearance) {
+    case StyleAppearance::ProgressBar:
+      // Best-fit size for progress meters is too large for most
+      // themes. We want these widgets to be able to really shrink
+      // down, so use the min-size request value (of 0).
+      sizeReq = TS_MIN;
+      break;
+
+    case StyleAppearance::RangeThumb: {
+      LayoutDeviceIntSize result(12, 20);
+      if (!IsRangeHorizontal(aFrame)) {
+        std::swap(result.width, result.height);
+      }
+      ScaleForFrameDPI(&result, aFrame);
+      return result;
+    }
+
+    case StyleAppearance::Separator: {
+      // that's 2px left margin, 2px right margin and 2px separator
+      // (the margin is drawn as part of the separator, though)
+      LayoutDeviceIntSize result(6, 0);
+      ScaleForFrameDPI(&result, aFrame);
+      return result;
+    }
+
+    case StyleAppearance::Button:
+      // We should let HTML buttons shrink to their min size.
+      // FIXME bug 403934: We should probably really separate
+      // GetPreferredWidgetSize from GetMinimumWidgetSize, so callers can
+      // use the one they want.
+      if (aFrame->GetContent()->IsHTMLElement()) {
+        sizeReq = TS_MIN;
+      }
+      break;
+
+    default:
+      break;
+  }
+
+  int32_t part, state;
+  nsresult rv = GetThemePartAndState(aFrame, aAppearance, part, state);
+  if (NS_FAILED(rv)) {
+    return {};
+  }
+
+  LayoutDeviceIntSize result;
+  rv = GetCachedMinimumWidgetSize(aFrame, theme, themeClass.value(),
+                                  aAppearance, part, state, sizeReq, &result);
+  ScaleForFrameDPI(&result, aFrame);
+  return result;
+}
+
+NS_IMETHODIMP
+nsNativeThemeWin::WidgetStateChanged(nsIFrame* aFrame,
+                                     StyleAppearance aAppearance,
+                                     nsAtom* aAttribute, bool* aShouldRepaint,
+                                     const nsAttrValue* aOldValue) {
+  // Some widget types just never change state.
+  if (aAppearance == StyleAppearance::Toolbox ||
+      aAppearance == StyleAppearance::Toolbar ||
+      aAppearance == StyleAppearance::Progresschunk ||
+      aAppearance == StyleAppearance::ProgressBar ||
+      aAppearance == StyleAppearance::Tabpanels ||
+      aAppearance == StyleAppearance::Tabpanel ||
+      aAppearance == StyleAppearance::Separator) {
+    *aShouldRepaint = false;
+    return NS_OK;
+  }
+
+  // We need to repaint the dropdown arrow in vista HTML combobox controls when
+  // the control is closed to get rid of the hover effect.
+  if ((aAppearance == StyleAppearance::Menulist ||
+       aAppearance == StyleAppearance::MenulistButton) &&
+      nsNativeTheme::IsHTMLContent(aFrame)) {
+    *aShouldRepaint = true;
+    return NS_OK;
+  }
+
+  // XXXdwh Not sure what can really be done here.  Can at least guess for
+  // specific widgets that they're highly unlikely to have certain states.
+  // For example, a toolbar doesn't care about any states.
+  if (!aAttribute) {
+    // Hover/focus/active changed.  Always repaint.
+    *aShouldRepaint = true;
+  } else {
+    // Check the attribute to see if it's relevant.
+    // disabled, checked, dlgtype, default, etc.
+    *aShouldRepaint = false;
+    if (aAttribute == nsGkAtoms::disabled || aAttribute == nsGkAtoms::checked ||
+        aAttribute == nsGkAtoms::selected ||
+        aAttribute == nsGkAtoms::visuallyselected ||
+        aAttribute == nsGkAtoms::readonly || aAttribute == nsGkAtoms::open ||
+        aAttribute == nsGkAtoms::menuactive || aAttribute == nsGkAtoms::focused)
+      *aShouldRepaint = true;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNativeThemeWin::ThemeChanged() {
+  nsUXThemeData::Invalidate();
+  memset(mBorderCacheValid, 0, sizeof(mBorderCacheValid));
+  memset(mMinimumWidgetSizeCacheValid, 0, sizeof(mMinimumWidgetSizeCacheValid));
+  mGutterSizeCacheValid = false;
+  return NS_OK;
+}
+
+bool nsNativeThemeWin::ThemeSupportsWidget(nsPresContext* aPresContext,
+                                           nsIFrame* aFrame,
+                                           StyleAppearance aAppearance) {
+  // XXXdwh We can go even further and call the API to ask if support exists for
+  // specific widgets.
+
+  if (IsWidgetAlwaysNonNative(aFrame, aAppearance)) {
+    return Theme::ThemeSupportsWidget(aPresContext, aFrame, aAppearance);
+  }
+
+  HANDLE theme = GetTheme(aAppearance);
+  if (theme || ClassicThemeSupportsWidget(aFrame, aAppearance))
+    // turn off theming for some HTML widgets styled by the page
+    return !IsWidgetStyled(aPresContext, aFrame, aAppearance);
+
+  return false;
+}
+
+bool nsNativeThemeWin::ThemeDrawsFocusForWidget(nsIFrame* aFrame,
+                                                StyleAppearance aAppearance) {
+  if (IsWidgetNonNative(aFrame, aAppearance) != NonNative::No) {
+    return Theme::ThemeDrawsFocusForWidget(aFrame, aAppearance);
+  }
+  switch (aAppearance) {
+    case StyleAppearance::Menulist:
+    case StyleAppearance::MenulistButton:
+    case StyleAppearance::Textarea:
+    case StyleAppearance::Textfield:
+    case StyleAppearance::NumberInput:
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool nsNativeThemeWin::ThemeNeedsComboboxDropmarker() { return true; }
+
+nsITheme::Transparency nsNativeThemeWin::GetWidgetTransparency(
+    nsIFrame* aFrame, StyleAppearance aAppearance) {
+  if (IsWidgetNonNative(aFrame, aAppearance) != NonNative::No) {
+    return Theme::GetWidgetTransparency(aFrame, aAppearance);
+  }
+
+  switch (aAppearance) {
+    case StyleAppearance::ProgressBar:
+    case StyleAppearance::Progresschunk:
+    case StyleAppearance::Range:
+      return eTransparent;
+    default:
+      break;
+  }
+
+  HANDLE theme = GetTheme(aAppearance);
+  // For the classic theme we don't really have a way of knowing
+  if (!theme) {
+    return eUnknownTransparency;
+  }
+
+  int32_t part, state;
+  nsresult rv = GetThemePartAndState(aFrame, aAppearance, part, state);
+  // Fail conservatively
+  NS_ENSURE_SUCCESS(rv, eUnknownTransparency);
+
+  if (part <= 0) {
+    // Not a real part code, so IsThemeBackgroundPartiallyTransparent may
+    // not work, so don't call it.
+    return eUnknownTransparency;
+  }
+
+  if (IsThemeBackgroundPartiallyTransparent(theme, part, state))
+    return eTransparent;
+  return eOpaque;
+}
+
+/* Windows 9x/NT/2000/Classic XP Theme Support */
+
+bool nsNativeThemeWin::ClassicThemeSupportsWidget(nsIFrame* aFrame,
+                                                  StyleAppearance aAppearance) {
+  switch (aAppearance) {
+    case StyleAppearance::Button:
+    case StyleAppearance::NumberInput:
+    case StyleAppearance::Textfield:
+    case StyleAppearance::Textarea:
+    case StyleAppearance::Range:
+    case StyleAppearance::RangeThumb:
+    case StyleAppearance::Menulist:
+    case StyleAppearance::MenulistButton:
+    case StyleAppearance::Listbox:
+    case StyleAppearance::Treeview:
+    case StyleAppearance::ProgressBar:
+    case StyleAppearance::Progresschunk:
+    case StyleAppearance::Tab:
+    case StyleAppearance::Tabpanel:
+    case StyleAppearance::Tabpanels:
+      return true;
+    default:
+      return false;
+  }
+}
+
+LayoutDeviceIntMargin nsNativeThemeWin::ClassicGetWidgetBorder(
+    nsDeviceContext* aContext, nsIFrame* aFrame, StyleAppearance aAppearance) {
+  LayoutDeviceIntMargin result;
+  switch (aAppearance) {
+    case StyleAppearance::Button:
+      result.top = result.left = result.bottom = result.right = 2;
+      break;
+    case StyleAppearance::Listbox:
+    case StyleAppearance::Treeview:
+    case StyleAppearance::Menulist:
+    case StyleAppearance::MenulistButton:
+    case StyleAppearance::Tab:
+    case StyleAppearance::NumberInput:
+    case StyleAppearance::Textfield:
+    case StyleAppearance::Textarea:
+      result.top = result.left = result.bottom = result.right = 2;
+      break;
+    case StyleAppearance::ProgressBar:
+      result.top = result.left = result.bottom = result.right = 1;
+      break;
+    default:
+      result.top = result.bottom = result.left = result.right = 0;
+      break;
+  }
+  return result;
+}
+
+bool nsNativeThemeWin::ClassicGetWidgetPadding(nsDeviceContext* aContext,
+                                               nsIFrame* aFrame,
+                                               StyleAppearance aAppearance,
+                                               LayoutDeviceIntMargin* aResult) {
+  switch (aAppearance) {
+    case StyleAppearance::ProgressBar:
+      (*aResult).top = (*aResult).left = (*aResult).bottom = (*aResult).right =
+          1;
+      return true;
+    default:
+      return false;
+  }
+}
+
+LayoutDeviceIntSize nsNativeThemeWin::ClassicGetMinimumWidgetSize(
+    nsIFrame* aFrame, StyleAppearance aAppearance) {
+  LayoutDeviceIntSize result;
+  switch (aAppearance) {
+    case StyleAppearance::RangeThumb: {
+      if (IsRangeHorizontal(aFrame)) {
+        result.width = 12;
+        result.height = 20;
+      } else {
+        result.width = 20;
+        result.height = 12;
+      }
+      break;
+    }
+    case StyleAppearance::Menulist:
+    case StyleAppearance::MenulistButton:
+    case StyleAppearance::Button:
+    case StyleAppearance::Listbox:
+    case StyleAppearance::Treeview:
+    case StyleAppearance::NumberInput:
+    case StyleAppearance::Textfield:
+    case StyleAppearance::Textarea:
+    case StyleAppearance::Progresschunk:
+    case StyleAppearance::ProgressBar:
+    case StyleAppearance::Tab:
+    case StyleAppearance::Tabpanel:
+    case StyleAppearance::Tabpanels:
+      // no minimum widget size
+      break;
+
+    default:
+      break;
+  }
+  return result;
+}
+
+nsresult nsNativeThemeWin::ClassicGetThemePartAndState(
+    nsIFrame* aFrame, StyleAppearance aAppearance, int32_t& aPart,
+    int32_t& aState, bool& aFocused) {
+  aFocused = false;
+  switch (aAppearance) {
+    case StyleAppearance::Button: {
+      aPart = DFC_BUTTON;
+      aState = DFCS_BUTTONPUSH;
+      aFocused = false;
+
+      ElementState contentState = GetContentState(aFrame, aAppearance);
+      if (contentState.HasState(ElementState::DISABLED)) {
+        aState |= DFCS_INACTIVE;
+      } else if (IsOpenButton(aFrame)) {
+        aState |= DFCS_PUSHED;
+      } else if (IsCheckedButton(aFrame)) {
+        aState |= DFCS_CHECKED;
+      } else {
+        if (contentState.HasAllStates(ElementState::ACTIVE |
+                                      ElementState::HOVER)) {
+          aState |= DFCS_PUSHED;
+          // The down state is flat if the button is focusable
+          if (aFrame->StyleUI()->UserFocus() == StyleUserFocus::Normal) {
+            if (!aFrame->GetContent()->IsHTMLElement()) aState |= DFCS_FLAT;
+
+            aFocused = true;
+          }
+        }
+        // On Windows, focused buttons are always drawn as such by the native
+        // theme, that's why we check ElementState::FOCUS instead of
+        // ElementState::FOCUSRING.
+        if (contentState.HasState(ElementState::FOCUS) ||
+            (aState == DFCS_BUTTONPUSH && IsDefaultButton(aFrame))) {
+          aFocused = true;
+        }
+      }
+
+      return NS_OK;
+    }
+    case StyleAppearance::Listbox:
+    case StyleAppearance::Treeview:
+    case StyleAppearance::NumberInput:
+    case StyleAppearance::Textfield:
+    case StyleAppearance::Textarea:
+    case StyleAppearance::Menulist:
+    case StyleAppearance::MenulistButton:
+    case StyleAppearance::Range:
+    case StyleAppearance::RangeThumb:
+    case StyleAppearance::Progresschunk:
+    case StyleAppearance::ProgressBar:
+    case StyleAppearance::Tab:
+    case StyleAppearance::Tabpanel:
+    case StyleAppearance::Tabpanels:
+      // these don't use DrawFrameControl
+      return NS_OK;
+    default:
+      return NS_ERROR_FAILURE;
+  }
+}
+
+// Draw classic Windows tab
+// (no system API for this, but DrawEdge can draw all the parts of a tab)
+static void DrawTab(HDC hdc, const RECT& R, int32_t aPosition, bool aSelected,
+                    bool aDrawLeft, bool aDrawRight) {
+  int32_t leftFlag, topFlag, rightFlag, lightFlag, shadeFlag;
+  RECT topRect, sideRect, bottomRect, lightRect, shadeRect;
+  int32_t selectedOffset, lOffset, rOffset;
+
+  selectedOffset = aSelected ? 1 : 0;
+  lOffset = aDrawLeft ? 2 : 0;
+  rOffset = aDrawRight ? 2 : 0;
+
+  // Get info for tab orientation/position (Left, Top, Right, Bottom)
+  switch (aPosition) {
+    case BF_LEFT:
+      leftFlag = BF_TOP;
+      topFlag = BF_LEFT;
+      rightFlag = BF_BOTTOM;
+      lightFlag = BF_DIAGONAL_ENDTOPRIGHT;
+      shadeFlag = BF_DIAGONAL_ENDBOTTOMRIGHT;
+
+      ::SetRect(&topRect, R.left, R.top + lOffset, R.right, R.bottom - rOffset);
+      ::SetRect(&sideRect, R.left + 2, R.top, R.right - 2 + selectedOffset,
+                R.bottom);
+      ::SetRect(&bottomRect, R.right - 2, R.top, R.right, R.bottom);
+      ::SetRect(&lightRect, R.left, R.top, R.left + 3, R.top + 3);
+      ::SetRect(&shadeRect, R.left + 1, R.bottom - 2, R.left + 2, R.bottom - 1);
+      break;
+    case BF_TOP:
+      leftFlag = BF_LEFT;
+      topFlag = BF_TOP;
+      rightFlag = BF_RIGHT;
+      lightFlag = BF_DIAGONAL_ENDTOPRIGHT;
+      shadeFlag = BF_DIAGONAL_ENDBOTTOMRIGHT;
+
+      ::SetRect(&topRect, R.left + lOffset, R.top, R.right - rOffset, R.bottom);
+      ::SetRect(&sideRect, R.left, R.top + 2, R.right,
+                R.bottom - 1 + selectedOffset);
+      ::SetRect(&bottomRect, R.left, R.bottom - 1, R.right, R.bottom);
+      ::SetRect(&lightRect, R.left, R.top, R.left + 3, R.top + 3);
+      ::SetRect(&shadeRect, R.right - 2, R.top + 1, R.right - 1, R.top + 2);
+      break;
+    case BF_RIGHT:
+      leftFlag = BF_TOP;
+      topFlag = BF_RIGHT;
+      rightFlag = BF_BOTTOM;
+      lightFlag = BF_DIAGONAL_ENDTOPLEFT;
+      shadeFlag = BF_DIAGONAL_ENDBOTTOMLEFT;
+
+      ::SetRect(&topRect, R.left, R.top + lOffset, R.right, R.bottom - rOffset);
+      ::SetRect(&sideRect, R.left + 2 - selectedOffset, R.top, R.right - 2,
+                R.bottom);
+      ::SetRect(&bottomRect, R.left, R.top, R.left + 2, R.bottom);
+      ::SetRect(&lightRect, R.right - 3, R.top, R.right - 1, R.top + 2);
+      ::SetRect(&shadeRect, R.right - 2, R.bottom - 3, R.right, R.bottom - 1);
+      break;
+    case BF_BOTTOM:
+      leftFlag = BF_LEFT;
+      topFlag = BF_BOTTOM;
+      rightFlag = BF_RIGHT;
+      lightFlag = BF_DIAGONAL_ENDTOPLEFT;
+      shadeFlag = BF_DIAGONAL_ENDBOTTOMLEFT;
+
+      ::SetRect(&topRect, R.left + lOffset, R.top, R.right - rOffset, R.bottom);
+      ::SetRect(&sideRect, R.left, R.top + 2 - selectedOffset, R.right,
+                R.bottom - 2);
+      ::SetRect(&bottomRect, R.left, R.top, R.right, R.top + 2);
+      ::SetRect(&lightRect, R.left, R.bottom - 3, R.left + 2, R.bottom - 1);
+      ::SetRect(&shadeRect, R.right - 2, R.bottom - 3, R.right, R.bottom - 1);
+      break;
+    default:
+      MOZ_CRASH();
+  }
+
+  // Background
+  ::FillRect(hdc, &R, (HBRUSH)(COLOR_3DFACE + 1));
+
+  // Tab "Top"
+  ::DrawEdge(hdc, &topRect, EDGE_RAISED, BF_SOFT | topFlag);
+
+  // Tab "Bottom"
+  if (!aSelected) ::DrawEdge(hdc, &bottomRect, EDGE_RAISED, BF_SOFT | topFlag);
+
+  // Tab "Sides"
+  if (!aDrawLeft) leftFlag = 0;
+  if (!aDrawRight) rightFlag = 0;
+  ::DrawEdge(hdc, &sideRect, EDGE_RAISED, BF_SOFT | leftFlag | rightFlag);
+
+  // Tab Diagonal Corners
+  if (aDrawLeft) ::DrawEdge(hdc, &lightRect, EDGE_RAISED, BF_SOFT | lightFlag);
+
+  if (aDrawRight) ::DrawEdge(hdc, &shadeRect, EDGE_RAISED, BF_SOFT | shadeFlag);
+}
+
+void nsNativeThemeWin::DrawCheckedRect(HDC hdc, const RECT& rc, int32_t fore,
+                                       int32_t back, HBRUSH defaultBack) {
+  static WORD patBits[8] = {0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55};
+
+  HBITMAP patBmp = ::CreateBitmap(8, 8, 1, 1, patBits);
+  if (patBmp) {
+    HBRUSH brush = (HBRUSH)::CreatePatternBrush(patBmp);
+    if (brush) {
+      COLORREF oldForeColor = ::SetTextColor(hdc, ::GetSysColor(fore));
+      COLORREF oldBackColor = ::SetBkColor(hdc, ::GetSysColor(back));
+      POINT vpOrg;
+
+      ::UnrealizeObject(brush);
+      ::GetViewportOrgEx(hdc, &vpOrg);
+      ::SetBrushOrgEx(hdc, vpOrg.x + rc.left, vpOrg.y + rc.top, nullptr);
+      HBRUSH oldBrush = (HBRUSH)::SelectObject(hdc, brush);
+      ::FillRect(hdc, &rc, brush);
+      ::SetTextColor(hdc, oldForeColor);
+      ::SetBkColor(hdc, oldBackColor);
+      ::SelectObject(hdc, oldBrush);
+      ::DeleteObject(brush);
+    } else
+      ::FillRect(hdc, &rc, defaultBack);
+
+    ::DeleteObject(patBmp);
+  }
+}
+
+nsresult nsNativeThemeWin::ClassicDrawWidgetBackground(
+    gfxContext* aContext, nsIFrame* aFrame, StyleAppearance aAppearance,
+    const nsRect& aRect, const nsRect& aDirtyRect) {
+  int32_t part, state;
+  bool focused;
+  nsresult rv;
+  rv = ClassicGetThemePartAndState(aFrame, aAppearance, part, state, focused);
+  if (NS_FAILED(rv)) return rv;
+
+  if (AssumeThemePartAndStateAreTransparent(part, state)) {
+    return NS_OK;
+  }
+
+  gfxFloat p2a = gfxFloat(aFrame->PresContext()->AppUnitsPerDevPixel());
+  RECT widgetRect;
+  gfxRect tr(aRect.X(), aRect.Y(), aRect.Width(), aRect.Height()),
+      dr(aDirtyRect.X(), aDirtyRect.Y(), aDirtyRect.Width(),
+         aDirtyRect.Height());
+
+  tr.Scale(1.0 / p2a);
+  dr.Scale(1.0 / p2a);
+
+  gfxWindowsNativeDrawing nativeDrawing(
+      aContext, dr, GetWidgetNativeDrawingFlags(aAppearance));
+
+RENDER_AGAIN:
+
+  HDC hdc = nativeDrawing.BeginNativeDrawing();
+  if (!hdc) return NS_ERROR_FAILURE;
+
+  nativeDrawing.TransformToNativeRect(tr, widgetRect);
+
+  rv = NS_OK;
+  switch (aAppearance) {
+    // Draw button
+    case StyleAppearance::Button: {
+      if (focused) {
+        // draw dark button focus border first
+        if (HBRUSH brush = ::GetSysColorBrush(COLOR_3DDKSHADOW)) {
+          ::FrameRect(hdc, &widgetRect, brush);
+        }
+        InflateRect(&widgetRect, -1, -1);
+      }
+      // setup DC to make DrawFrameControl draw correctly
+      int32_t oldTA = ::SetTextAlign(hdc, TA_TOP | TA_LEFT | TA_NOUPDATECP);
+      ::DrawFrameControl(hdc, &widgetRect, part, state);
+      ::SetTextAlign(hdc, oldTA);
+      break;
+    }
+    // Draw controls with 2px 3D inset border
+    case StyleAppearance::NumberInput:
+    case StyleAppearance::Textfield:
+    case StyleAppearance::Textarea:
+    case StyleAppearance::Listbox:
+    case StyleAppearance::Menulist:
+    case StyleAppearance::MenulistButton: {
+      // Draw inset edge
+      ::DrawEdge(hdc, &widgetRect, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
+
+      ElementState elementState = GetContentState(aFrame, aAppearance);
+
+      // Fill in background
+
+      if (elementState.HasState(ElementState::DISABLED) ||
+          (aFrame->GetContent()->IsXULElement() && IsReadOnly(aFrame)))
+        ::FillRect(hdc, &widgetRect, (HBRUSH)(COLOR_BTNFACE + 1));
+      else
+        ::FillRect(hdc, &widgetRect, (HBRUSH)(COLOR_WINDOW + 1));
+
+      break;
+    }
+    case StyleAppearance::Treeview: {
+      // Draw inset edge
+      ::DrawEdge(hdc, &widgetRect, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
+
+      // Fill in window color background
+      ::FillRect(hdc, &widgetRect, (HBRUSH)(COLOR_WINDOW + 1));
+
+      break;
+    }
+    // Draw 3D face background controls
+    case StyleAppearance::ProgressBar:
+      // Draw 3D border
+      ::DrawEdge(hdc, &widgetRect, BDR_SUNKENOUTER, BF_RECT | BF_MIDDLE);
+      InflateRect(&widgetRect, -1, -1);
+      [[fallthrough]];
+    case StyleAppearance::Tabpanel: {
+      ::FillRect(hdc, &widgetRect, (HBRUSH)(COLOR_BTNFACE + 1));
+      break;
+    }
+    case StyleAppearance::RangeThumb: {
+      ElementState elementState = GetContentState(aFrame, aAppearance);
+
+      ::DrawEdge(hdc, &widgetRect, EDGE_RAISED,
+                 BF_RECT | BF_SOFT | BF_MIDDLE | BF_ADJUST);
+      if (elementState.HasState(ElementState::DISABLED)) {
+        DrawCheckedRect(hdc, widgetRect, COLOR_3DFACE, COLOR_3DHILIGHT,
+                        (HBRUSH)COLOR_3DHILIGHT);
+      }
+
+      break;
+    }
+    // Draw scale track background
+    case StyleAppearance::Range: {
+      const int32_t trackWidth = 4;
+      // When rounding is necessary, we round the position of the track
+      // away from the chevron of the thumb to make it look better.
+      if (IsRangeHorizontal(aFrame)) {
+        widgetRect.top += (widgetRect.bottom - widgetRect.top - trackWidth) / 2;
+        widgetRect.bottom = widgetRect.top + trackWidth;
+      } else {
+        if (!IsFrameRTL(aFrame)) {
+          widgetRect.left +=
+              (widgetRect.right - widgetRect.left - trackWidth) / 2;
+          widgetRect.right = widgetRect.left + trackWidth;
+        } else {
+          widgetRect.right -=
+              (widgetRect.right - widgetRect.left - trackWidth) / 2;
+          widgetRect.left = widgetRect.right - trackWidth;
+        }
+      }
+
+      ::DrawEdge(hdc, &widgetRect, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
+      ::FillRect(hdc, &widgetRect, (HBRUSH)GetStockObject(GRAY_BRUSH));
+
+      break;
+    }
+    case StyleAppearance::Progresschunk: {
+      nsIFrame* stateFrame = aFrame->GetParent();
+      ElementState elementState = GetContentState(stateFrame, aAppearance);
+
+      const bool indeterminate =
+          elementState.HasState(ElementState::INDETERMINATE);
+      bool vertical = IsVerticalProgress(stateFrame);
+
+      nsIContent* content = aFrame->GetContent();
+      if (!indeterminate || !content) {
+        ::FillRect(hdc, &widgetRect, (HBRUSH)(COLOR_HIGHLIGHT + 1));
+        break;
+      }
+
+      RECT overlayRect = CalculateProgressOverlayRect(
+          aFrame, &widgetRect, vertical, indeterminate, true);
+
+      ::FillRect(hdc, &overlayRect, (HBRUSH)(COLOR_HIGHLIGHT + 1));
+
+      if (!QueueAnimatedContentForRefresh(aFrame->GetContent(), 30)) {
+        NS_WARNING("unable to animate progress widget!");
+      }
+      break;
+    }
+
+    // Draw Tab
+    case StyleAppearance::Tab: {
+      DrawTab(hdc, widgetRect, IsBottomTab(aFrame) ? BF_BOTTOM : BF_TOP,
+              IsSelectedTab(aFrame), !IsRightToSelectedTab(aFrame),
+              !IsLeftToSelectedTab(aFrame));
+
+      break;
+    }
+    case StyleAppearance::Tabpanels:
+      ::DrawEdge(hdc, &widgetRect, EDGE_RAISED,
+                 BF_SOFT | BF_MIDDLE | BF_LEFT | BF_RIGHT | BF_BOTTOM);
+
+      break;
+
+    default:
+      rv = NS_ERROR_FAILURE;
+      break;
+  }
+
+  nativeDrawing.EndNativeDrawing();
+
+  if (NS_FAILED(rv)) return rv;
+
+  if (nativeDrawing.ShouldRenderAgain()) goto RENDER_AGAIN;
+
+  nativeDrawing.PaintToContext();
+
+  return rv;
+}
+
+uint32_t nsNativeThemeWin::GetWidgetNativeDrawingFlags(
+    StyleAppearance aAppearance) {
+  switch (aAppearance) {
+    case StyleAppearance::Button:
+    case StyleAppearance::NumberInput:
+    case StyleAppearance::Textfield:
+    case StyleAppearance::Textarea:
+    case StyleAppearance::Menulist:
+    case StyleAppearance::MenulistButton:
+      return gfxWindowsNativeDrawing::CANNOT_DRAW_TO_COLOR_ALPHA |
+             gfxWindowsNativeDrawing::CAN_AXIS_ALIGNED_SCALE |
+             gfxWindowsNativeDrawing::CANNOT_COMPLEX_TRANSFORM;
+
+    // need to check these others
+    default:
+      return gfxWindowsNativeDrawing::CANNOT_DRAW_TO_COLOR_ALPHA |
+             gfxWindowsNativeDrawing::CANNOT_AXIS_ALIGNED_SCALE |
+             gfxWindowsNativeDrawing::CANNOT_COMPLEX_TRANSFORM;
+  }
+}
+
+}  // namespace mozilla::widget
+
+///////////////////////////////////////////
+// Creation Routine
+///////////////////////////////////////////
+
+already_AddRefed<Theme> do_CreateNativeThemeDoNotUseDirectly() {
+  return do_AddRef(new nsNativeThemeWin());
+}