Implement the Web Theme Engine for Android

webkit/glue/webthemeengine_impl_android.cc

Index: webkit/glue/webthemeengine_impl_android.cc
diff --git a/webkit/glue/webthemeengine_impl_android.cc b/webkit/glue/webthemeengine_impl_android.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c0d97e1861577aa91b685e2bf4c2b8a92f80a955
--- /dev/null
+++ b/webkit/glue/webthemeengine_impl_android.cc
@@ -0,0 +1,186 @@
+// Copyright (c) 2011 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 "webkit/glue/webthemeengine_impl_android.h"
+
+#include "base/logging.h"
+#include "skia/ext/platform_canvas.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebRect.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebSize.h"
+#include "ui/gfx/native_theme_android.h"
+
+using WebKit::WebCanvas;
+using WebKit::WebColor;
+using WebKit::WebRect;

[darin (slow to review), 2011/12/14 17:56:36]

it seems like adding WebThemeEngine here would be nice :)

[Peter Beverloo, 2011/12/14 18:58:41]

Good catch, fixed! The file was based on the webthemeengine_impl_linux.cc file
which also doesn't do this. Shall I address that in another CL?

+
+namespace webkit_glue {
+
+static gfx::Rect WebRectToRect(const WebRect& rect) {

[darin (slow to review), 2011/12/14 17:56:36]

Hmm, webthemeengine_impl_linux.cc defines this too.

[Peter Beverloo, 2011/12/14 18:58:41]

Avoiding the duplicate function would be ideal, of course, but what file would
be a good location for it to be defined in?

+  return gfx::Rect(rect.x, rect.y, rect.width, rect.height);
+}
+
+static gfx::NativeThemeAndroid::Part NativeThemePart(
+    WebKit::WebThemeEngine::Part part) {
+  switch (part) {
+    case WebKit::WebThemeEngine::PartScrollbarDownArrow:
+      return gfx::NativeThemeAndroid::SCROLLBAR_DOWN_ARROW;
+    case WebKit::WebThemeEngine::PartScrollbarLeftArrow:
+      return gfx::NativeThemeAndroid::SCROLLBAR_LEFT_ARROW;
+    case WebKit::WebThemeEngine::PartScrollbarRightArrow:
+      return gfx::NativeThemeAndroid::SCROLLBAR_RIGHT_ARROW;
+    case WebKit::WebThemeEngine::PartScrollbarUpArrow:
+      return gfx::NativeThemeAndroid::SCROLLBAR_UP_ARROW;
+    case WebKit::WebThemeEngine::PartScrollbarHorizontalThumb:
+      // Android doesn't draw scrollbars.
+      NOTREACHED();
+      return static_cast<gfx::NativeThemeAndroid::Part>(0);
+    case WebKit::WebThemeEngine::PartScrollbarVerticalThumb:
+      // Android doesn't draw scrollbars.
+      NOTREACHED();
+      return static_cast<gfx::NativeThemeAndroid::Part>(0);
+    case WebKit::WebThemeEngine::PartScrollbarHorizontalTrack:
+      // Android doesn't draw scrollbars.
+      NOTREACHED();
+      return static_cast<gfx::NativeThemeAndroid::Part>(0);
+    case WebKit::WebThemeEngine::PartScrollbarVerticalTrack:
+      // Android doesn't draw scrollbars.
+      NOTREACHED();
+      return static_cast<gfx::NativeThemeAndroid::Part>(0);
+    case WebKit::WebThemeEngine::PartCheckbox:
+      return gfx::NativeThemeAndroid::CHECKBOX;
+    case WebKit::WebThemeEngine::PartRadio:
+      return gfx::NativeThemeAndroid::RADIO;
+    case WebKit::WebThemeEngine::PartButton:
+      return gfx::NativeThemeAndroid::PUSH_BUTTON;
+    case WebKit::WebThemeEngine::PartTextField:
+      return gfx::NativeThemeAndroid::TEXTFIELD;
+    case WebKit::WebThemeEngine::PartMenuList:
+      return gfx::NativeThemeAndroid::MENU_LIST;
+    case WebKit::WebThemeEngine::PartSliderTrack:
+      return gfx::NativeThemeAndroid::SLIDER_TRACK;
+    case WebKit::WebThemeEngine::PartSliderThumb:
+      return gfx::NativeThemeAndroid::SLIDER_THUMB;
+    case WebKit::WebThemeEngine::PartInnerSpinButton:
+      return gfx::NativeThemeAndroid::INNER_SPIN_BUTTON;
+    case WebKit::WebThemeEngine::PartProgressBar:
+      return gfx::NativeThemeAndroid::PROGRESS_BAR;
+    default:
+      return gfx::NativeThemeAndroid::SCROLLBAR_DOWN_ARROW;
+  }
+}
+
+static gfx::NativeThemeAndroid::State NativeThemeState(
+    WebKit::WebThemeEngine::State state) {
+  switch (state) {
+    case WebKit::WebThemeEngine::StateDisabled:
+      return gfx::NativeThemeAndroid::DISABLED;
+    case WebKit::WebThemeEngine::StateHover:
+      return gfx::NativeThemeAndroid::HOVERED;
+    case WebKit::WebThemeEngine::StateNormal:
+      return gfx::NativeThemeAndroid::NORMAL;
+    case WebKit::WebThemeEngine::StatePressed:
+      return gfx::NativeThemeAndroid::PRESSED;
+    default:
+      return gfx::NativeThemeAndroid::DISABLED;
+  }
+}
+
+static void GetNativeThemeExtraParams(
+    WebKit::WebThemeEngine::Part part,
+    WebKit::WebThemeEngine::State state,
+    const WebKit::WebThemeEngine::ExtraParams* extra_params,
+    gfx::NativeThemeAndroid::ExtraParams* native_theme_extra_params) {
+  switch (part) {
+    case WebKit::WebThemeEngine::PartScrollbarHorizontalTrack:
+    case WebKit::WebThemeEngine::PartScrollbarVerticalTrack:
+      // Android doesn't draw scrollbars.
+      NOTREACHED();
+      break;
+    case WebKit::WebThemeEngine::PartCheckbox:
+      native_theme_extra_params->button.checked = extra_params->button.checked;
+      native_theme_extra_params->button.indeterminate =
+          extra_params->button.indeterminate;
+      break;
+    case WebKit::WebThemeEngine::PartRadio:
+      native_theme_extra_params->button.checked = extra_params->button.checked;
+      break;
+    case WebKit::WebThemeEngine::PartButton:
+      native_theme_extra_params->button.is_default =
+          extra_params->button.isDefault;
+      native_theme_extra_params->button.has_border =
+          extra_params->button.hasBorder;
+      native_theme_extra_params->button.background_color =
+          extra_params->button.backgroundColor;
+      break;
+    case WebKit::WebThemeEngine::PartTextField:
+      native_theme_extra_params->text_field.is_text_area =
+          extra_params->textField.isTextArea;
+      native_theme_extra_params->text_field.is_listbox =
+          extra_params->textField.isListbox;
+      native_theme_extra_params->text_field.background_color =
+          extra_params->textField.backgroundColor;
+      break;
+    case WebKit::WebThemeEngine::PartMenuList:
+      native_theme_extra_params->menu_list.has_border =
+          extra_params->menuList.hasBorder;
+      native_theme_extra_params->menu_list.has_border_radius =
+          extra_params->menuList.hasBorderRadius;
+      native_theme_extra_params->menu_list.arrow_x =
+          extra_params->menuList.arrowX;
+      native_theme_extra_params->menu_list.arrow_y =
+          extra_params->menuList.arrowY;
+      native_theme_extra_params->menu_list.background_color =
+          extra_params->menuList.backgroundColor;
+      break;
+    case WebKit::WebThemeEngine::PartSliderTrack:
+    case WebKit::WebThemeEngine::PartSliderThumb:
+      native_theme_extra_params->slider.vertical =
+          extra_params->slider.vertical;
+      native_theme_extra_params->slider.in_drag = extra_params->slider.inDrag;
+      break;
+    case WebKit::WebThemeEngine::PartInnerSpinButton:
+      native_theme_extra_params->inner_spin.spin_up =
+          extra_params->innerSpin.spinUp;
+      native_theme_extra_params->inner_spin.read_only =
+          extra_params->innerSpin.readOnly;
+      break;
+    case WebKit::WebThemeEngine::PartProgressBar:
+      native_theme_extra_params->progress_bar.determinate =
+          extra_params->progressBar.determinate;
+      native_theme_extra_params->progress_bar.value_rect_x =
+          extra_params->progressBar.valueRectX;
+      native_theme_extra_params->progress_bar.value_rect_y =
+          extra_params->progressBar.valueRectY;
+      native_theme_extra_params->progress_bar.value_rect_width =
+          extra_params->progressBar.valueRectWidth;
+      native_theme_extra_params->progress_bar.value_rect_height =
+          extra_params->progressBar.valueRectHeight;
+      break;
+    default:
+      break;  // Parts that have no extra params get here.
+  }
+}
+
+WebKit::WebSize WebThemeEngineImpl::getSize(WebKit::WebThemeEngine::Part part) {
+  return gfx::NativeThemeAndroid::instance()->GetPartSize(
+             NativeThemePart(part));

[darin (slow to review), 2011/12/14 17:56:36]

nit: indentation

[Peter Beverloo, 2011/12/14 18:58:41]

Done.

+}
+
+void WebThemeEngineImpl::paint(
+    WebKit::WebCanvas* canvas,
+    WebKit::WebThemeEngine::Part part,
+    WebKit::WebThemeEngine::State state,
+    const WebKit::WebRect& rect,
+    const WebKit::WebThemeEngine::ExtraParams* extra_params) {
+  gfx::NativeThemeAndroid::ExtraParams native_theme_extra_params;
+  GetNativeThemeExtraParams(
+      part, state, extra_params, &native_theme_extra_params);
+  gfx::NativeThemeAndroid::instance()->Paint(
+      canvas,
+      NativeThemePart(part),
+      NativeThemeState(state),
+      WebRectToRect(rect),
+      native_theme_extra_params);
+}
+}  // namespace webkit_glue