Windows native color mixer. Not yet instantiated.

Bug: 1003612
Change-Id: I4df6d0fe38efaa706e981a7dedcc19355c21fc34
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1900656
Commit-Queue: Robert Liao <robliao@chromium.org>
Reviewed-by: Robert Liao <robliao@chromium.org>
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#713065}

ui/color/BUILD.gn

@@ -30,6 +30,29 @@ jumbo_component("color") {
   ]
 }
 
+jumbo_component("mixers") {
+  sources = [
+    "color_mixers.h",
+  ]
+
+  defines = [ "IS_COLOR_IMPL" ]
+
+  deps = []
+
+  public_deps = [
+    "//base",
+  ]
+
+  if (is_win) {
+    sources += [ "win/native_color_mixer.cc" ]
+
+    deps += [
+      ":color",
+      "//ui/gfx:color_utils",
+    ]
+  }
+}
+
 test("color_unittests") {
   sources = [
     "color_mixer_unittest.cc",

ui/color/color_id.h

@@ -5,6 +5,8 @@
 #ifndef UI_COLOR_COLOR_ID_H_
 #define UI_COLOR_COLOR_ID_H_
 
+#include "build/build_config.h"
+
 namespace ui {
 
 // ColorId contains identifiers for all input, intermediary, and output colors
@@ -19,6 +21,40 @@ enum ColorIds : ColorId {
   // TODO(pkasting): Define this list.
   kColorX = kUiColorsStart,
 
+#if defined(OS_WIN)
+  // Windows native colors
+  kColorNative3dDkShadow,
+  kColorNative3dLight,
+  kColorNativeActiveBorder,
+  kColorNativeActiveCaption,
+  kColorNativeAppWorkspace,
+  kColorNativeBackground,
+  kColorNativeBtnFace,
+  kColorNativeBtnHighlight,
+  kColorNativeBtnShadow,
+  kColorNativeBtnText,
+  kColorNativeCaptionText,
+  kColorNativeGradientActiveCaption,
+  kColorNativeGradientInactiveCaption,
+  kColorNativeGrayText,
+  kColorNativeHighlight,
+  kColorNativeHighlightText,
+  kColorNativeHotlight,
+  kColorNativeInactiveBorder,
+  kColorNativeInactiveCaption,
+  kColorNativeInactiveCaptionText,
+  kColorNativeInfoBk,
+  kColorNativeInfoText,
+  kColorNativeMenu,
+  kColorNativeMenuBar,
+  kColorNativeMenuHilight,
+  kColorNativeMenuText,
+  kColorNativeScrollbar,
+  kColorNativeWindow,
+  kColorNativeWindowFrame,
+  kColorNativeWindowText,
+#endif  // defined(OS_WIN)
+
   // Embedders must start color IDs from this value.
   kUiColorsEnd,
 
@@ -37,7 +73,10 @@ enum ColorSetIds : ColorSetId {
   kUiColorSetsStart = kUiColorsLast + 1,
 
   // TODO(pkasting): Define this list.
-  kColorSetX = kUiColorSetsStart,
+
+  // A set of color IDs whose values match the native platform as closely as
+  // possible.
+  kColorSetNative = kUiColorSetsStart,
 
   // Embedders must start color set IDs from this value.
   kUiColorSetsEnd,

ui/color/color_mixers.h

+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef UI_COLOR_COLOR_MIXERS_H_
+#define UI_COLOR_COLOR_MIXERS_H_
+
+#include "base/component_export.h"
+
+namespace ui {
+
+class ColorProvider;
+
+// Adds native color mixers to |provider| that provide kColorSetNative, as well
+// as mappings from this set to cross-platform IDs.  This function should be
+// implemented on a per-platform basis in relevant subdirectories.
+void AddNativeColorMixers(ui::ColorProvider* provider);
+
+// TODO(pkasting): Other color mixers, e.g.:
+//   * Chrome default colors
+//   * Native/Chrome priority ordering mixer
+//   * All ui/ control and other colors, created from the above
+
+}  // namespace ui
+
+#endif  // UI_COLOR_COLOR_MIXERS_H_

ui/color/win/native_color_mixer.cc

+// Copyright 2019 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/color/color_mixers.h"
+
+#include <windows.h>
+
+#include "ui/color/color_id.h"
+#include "ui/color/color_mixer.h"
+#include "ui/color/color_provider.h"
+#include "ui/color/color_set.h"
+#include "ui/gfx/color_utils.h"
+
+namespace ui {
+
+void AddMixerForNativeColors(ui::ColorProvider* provider) {
+  // TODO(pkasting): Not clear whether this is really the set of interest.
+  // Maybe there's some way to query colors used by UxTheme.dll, or maybe we
+  // should be hardcoding a list of colors for system light/dark modes based on
+  // reverse-engineering current Windows behavior.  Or maybe the union of all
+  // these.
+#define MAP(chrome, native) {chrome, color_utils::GetSysSkColor(native)}
+  provider->AddMixer()->AddSet(
+      {kColorSetNative,
+       {
+           MAP(kColorNative3dDkShadow, COLOR_3DDKSHADOW),
+           MAP(kColorNative3dLight, COLOR_3DLIGHT),
+           MAP(kColorNativeActiveBorder, COLOR_ACTIVEBORDER),
+           MAP(kColorNativeActiveCaption, COLOR_ACTIVECAPTION),
+           MAP(kColorNativeAppWorkspace, COLOR_APPWORKSPACE),
+           MAP(kColorNativeBackground, COLOR_BACKGROUND),
+           MAP(kColorNativeBtnFace, COLOR_BTNFACE),
+           MAP(kColorNativeBtnHighlight, COLOR_BTNHIGHLIGHT),
+           MAP(kColorNativeBtnShadow, COLOR_BTNSHADOW),
+           MAP(kColorNativeBtnText, COLOR_BTNTEXT),
+           MAP(kColorNativeCaptionText, COLOR_CAPTIONTEXT),
+           MAP(kColorNativeGradientActiveCaption, COLOR_GRADIENTACTIVECAPTION),
+           MAP(kColorNativeGradientInactiveCaption,
+               COLOR_GRADIENTINACTIVECAPTION),
+           MAP(kColorNativeGrayText, COLOR_GRAYTEXT),
+           MAP(kColorNativeHighlight, COLOR_HIGHLIGHT),
+           MAP(kColorNativeHighlightText, COLOR_HIGHLIGHTTEXT),
+           MAP(kColorNativeHotlight, COLOR_HOTLIGHT),
+           MAP(kColorNativeInactiveBorder, COLOR_INACTIVEBORDER),
+           MAP(kColorNativeInactiveCaption, COLOR_INACTIVECAPTION),
+           MAP(kColorNativeInactiveCaptionText, COLOR_INACTIVECAPTIONTEXT),
+           MAP(kColorNativeInfoBk, COLOR_INFOBK),
+           MAP(kColorNativeInfoText, COLOR_INFOTEXT),
+           MAP(kColorNativeMenu, COLOR_MENU),
+           MAP(kColorNativeMenuBar, COLOR_MENUBAR),
+           MAP(kColorNativeMenuHilight, COLOR_MENUHILIGHT),
+           MAP(kColorNativeMenuText, COLOR_MENUTEXT),
+           MAP(kColorNativeScrollbar, COLOR_SCROLLBAR),
+           MAP(kColorNativeWindow, COLOR_WINDOW),
+           MAP(kColorNativeWindowFrame, COLOR_WINDOWFRAME),
+           MAP(kColorNativeWindowText, COLOR_WINDOWTEXT),
+       }});
+}
+
+void AddMixerToMapToCrossPlatformIds(ui::ColorProvider* provider) {
+  // TODO(pkasting): Add recipes
+}
+
+void AddNativeColorMixers(ui::ColorProvider* provider) {
+  AddMixerForNativeColors(provider);
+  AddMixerToMapToCrossPlatformIds(provider);
+}
+
+}  // namespace ui