Move implementation of linux scrollbars from webkit using new

WebThemeEngine api. Also implement chromeos specific version.

BUG=chromium-os:6857
TEST=Verify that both linux and chromeos scrollbars look right.

Review URL: http://codereview.chromium.org/3618014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@62068 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 100 insertions, 0 deletions

diff --git a/webkit/glue/webthemeengine_impl_linux.cc b/webkit/glue/webthemeengine_impl_linux.cc
new file mode 100644
index 0000000..d5cc9b4
--- /dev/null
+++ b/webkit/glue/webthemeengine_impl_linux.cc
@@ -0,0 +1,100 @@
+// Copyright (c) 2010 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_linux.h"
+
+#include "gfx/native_theme_linux.h"
+#include "skia/ext/platform_canvas.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebRect.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebSize.h"
+
+using WebKit::WebCanvas;
+using WebKit::WebColor;
+using WebKit::WebRect;
+
+namespace webkit_glue {
+
+static gfx::Rect WebRectToRect(const WebRect& rect) {
+  return gfx::Rect(rect.x, rect.y, rect.width, rect.height);
+}
+
+static gfx::NativeThemeLinux::Part NativeThemePart(
+    WebKit::WebThemeEngine::Part part) {
+  switch (part) {
+    case WebKit::WebThemeEngine::PartScrollbarDownArrow:
+      return gfx::NativeThemeLinux::kScrollbarDownArrow;
+    case WebKit::WebThemeEngine::PartScrollbarLeftArrow:
+      return gfx::NativeThemeLinux::kScrollbarLeftArrow;
+    case WebKit::WebThemeEngine::PartScrollbarRightArrow:
+      return gfx::NativeThemeLinux::kScrollbarRightArrow;
+    case WebKit::WebThemeEngine::PartScrollbarUpArrow:
+      return gfx::NativeThemeLinux::kScrollbarUpArrow;
+    case WebKit::WebThemeEngine::PartScrollbarHorizontalThumb:
+      return gfx::NativeThemeLinux::kScrollbarHorizontalThumb;
+    case WebKit::WebThemeEngine::PartScrollbarVerticalThumb:
+      return gfx::NativeThemeLinux::kScrollbarVerticalThumb;
+    case WebKit::WebThemeEngine::PartScrollbarHoriztonalTrack:
+      return gfx::NativeThemeLinux::kScrollbarHorizontalTrack;
+    case WebKit::WebThemeEngine::PartScrollbarVerticalTrack:
+      return gfx::NativeThemeLinux::kScrollbarVerticalTrack;
+    default:
+      return gfx::NativeThemeLinux::kScrollbarDownArrow;
+  }
+}
+
+static gfx::NativeThemeLinux::State NativeThemeState(
+    WebKit::WebThemeEngine::State state) {
+  switch (state) {
+    case WebKit::WebThemeEngine::StateDisabled:
+      return gfx::NativeThemeLinux::kDisabled;
+    case WebKit::WebThemeEngine::StateHover:
+      return gfx::NativeThemeLinux::kHover;
+    case WebKit::WebThemeEngine::StateNormal:
+      return gfx::NativeThemeLinux::kNormal;
+    case WebKit::WebThemeEngine::StatePressed:
+      return gfx::NativeThemeLinux::kPressed;
+    default:
+      return gfx::NativeThemeLinux::kDisabled;
+  }
+}
+
+static void GetNativeThemeExtraParams(
+    WebKit::WebThemeEngine::Part part,
+    WebKit::WebThemeEngine::State state,
+    const WebKit::WebThemeEngine::ExtraParams* extra_params,
+    gfx::NativeThemeLinux::ExtraParams* native_theme_extra_params) {
+  if (part == WebKit::WebThemeEngine::PartScrollbarHoriztonalTrack ||
+      part == WebKit::WebThemeEngine::PartScrollbarVerticalTrack) {
+    native_theme_extra_params->scrollbar_track.track_x =
+        extra_params->scrollbarTrack.trackX;
+    native_theme_extra_params->scrollbar_track.track_y =
+        extra_params->scrollbarTrack.trackY;
+    native_theme_extra_params->scrollbar_track.track_width =
+        extra_params->scrollbarTrack.trackWidth;
+    native_theme_extra_params->scrollbar_track.track_height =
+        extra_params->scrollbarTrack.trackHeight;
+  }
+}
+
+WebKit::WebSize WebThemeEngineImpl::getSize(WebKit::WebThemeEngine::Part part) {
+  return gfx::NativeThemeLinux::instance()->GetSize(NativeThemePart(part));
+}
+
+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::NativeThemeLinux::ExtraParams native_theme_extra_params;
+  GetNativeThemeExtraParams(
+      part, state, extra_params, &native_theme_extra_params);
+  gfx::NativeThemeLinux::instance()->Paint(
+      canvas,
+      NativeThemePart(part),
+      NativeThemeState(state),
+      WebRectToRect(rect),
+      native_theme_extra_params);
+}
+}  // namespace webkit_glue