This change adds a new "generic" theme to the Windows implementation of

test_shell, so that we can render controls in a platform-verion-independent
manner, allowing us to use (almost) a single set of baselines for all 
versions of Windows.

test_shell is modified to accept three new switches: --ux-theme (for the
default or "new" XP/Vista theming engine), --classic-theme (for the older
"Classic" theming engine), and --generic-theme (for the new Skia-based 
test theme). Specifying --layout-tests will default to --classic-theme,
otherwise --ux-theme is the default (this is compatible with existing 
test_shell behavior). Once the new version-independent baselines are 
checked in, we will flip this behavior so --layout-tests defaults to
--generic-theme as well.

This change adds test_shell_webtheme{engine,control}.{cc,h} as Windows-only
build files, and adds documentation to webkit/api/public/win/WebThemeEngine.

It also adds a chromium-win-xp platform baseline directory (currently empty)
and modifies the layout_test/layout_package/platform_utils_win.py baseline
search path to confirm to WebKit's directory search logic (vista and win7
look just in chromium-win, but XP looks in chromium-win-xp first, followed by
chromium-win).

  BUG=none
  R=darin,pkasting
  TEST=none

Review URL: http://codereview.chromium.org/192021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@26161 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 170 insertions, 0 deletions

diff --git a/webkit/tools/test_shell/test_shell_webthemecontrol.h b/webkit/tools/test_shell/test_shell_webthemecontrol.h
new file mode 100644
index 0000000..bb439af
--- /dev/null
+++ b/webkit/tools/test_shell/test_shell_webthemecontrol.h
@@ -0,0 +1,170 @@
+// Copyright (c) 2009 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.
+
+// TestShellWebTheme::Control implements the generic rendering of controls
+// needed by TestShellWebTheme::Engine. See the comments in that class
+// header file for why this class is needed and used.
+//
+// This class implements a generic set of widgets using Skia. The widgets
+// are optimized for testability, not a pleasing appearance.
+//
+
+#ifndef WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_WEBTHEMECONTROL_H_
+#define WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_WEBTHEMECONTROL_H_
+
+#include "base/basictypes.h"
+#include "skia/ext/platform_canvas.h"
+#include "third_party/skia/include/core/SkColor.h"
+#include "third_party/skia/include/core/SkRect.h"
+
+namespace TestShellWebTheme {
+
+class Control {
+ public:
+  // This list of states mostly mirrors the list in
+  // third_party/WebKit/WebCore/platform/ThemeTypes.h but is maintained
+  // separately since that isn't public and also to minimize dependencies.
+  // Note that the WebKit ThemeTypes seem to imply that a control can be
+  // in multiple states simultaneously but WebThemeEngine only allows for
+  // a single state at a time.
+  //
+  // Some definitions for the various states:
+  //   Disabled - indicates that a control can't be modified or selected
+  //              (corresponds to HTML 'disabled' attribute)
+  //   ReadOnly - indicates that a control can't be modified but can be
+  //              selected
+  //   Normal   - the normal state of control on the page when it isn't
+  //              focused or otherwise active
+  //   Hot      - when the mouse is hovering over a part of the control,
+  //              all the other parts are considered "hot"
+  //   Hover    - when the mouse is directly over a control (the CSS
+  //               :hover pseudo-class)
+  //   Focused  - when the control has the keyboard focus
+  //   Pressed  - when the control is being triggered (by a mousedown or
+  //              a key event).
+  enum State {
+    kUnknown_State = 0,
+    kDisabled_State,
+    kReadOnly_State,
+    kNormal_State,
+    kHot_State,
+    kHover_State,
+    kFocused_State,
+    kPressed_State
+  };
+
+  // This list of types mostly mirrors the list in
+  // third_party/WebKit/WebCore/platform/ThemeTypes.h but is maintained
+  // separately since that isn't public and also to minimize dependencies.
+  //
+  // Note that what the user might think of as a single control can be
+  // made up of multiple parts. For example, a single scroll bar contains
+  // six clickable parts - two arrows, the "thumb" indicating the current
+  // position on the bar, the other two parts of the bar (before and after
+  // the thumb) and the "gripper" on the thumb itself.
+  //
+  enum Type {
+    kUnknown_Type = 0,
+    kTextField_Type,
+    kPushButton_Type,
+    kUncheckedBox_Type,
+    kCheckedBox_Type,
+    kUncheckedRadio_Type,
+    kCheckedRadio_Type,
+    kHorizontalScrollTrackBack_Type,
+    kHorizontalScrollTrackForward_Type,
+    kHorizontalScrollThumb_Type,
+    kHorizontalScrollGrip_Type,
+    kVerticalScrollTrackBack_Type,
+    kVerticalScrollTrackForward_Type,
+    kVerticalScrollThumb_Type,
+    kVerticalScrollGrip_Type,
+    kLeftArrow_Type,
+    kRightArrow_Type,
+    kUpArrow_Type,
+    kDownArrow_Type,
+    kHorizontalSliderTrack_Type,
+    kHorizontalSliderThumb_Type,
+    kDropDownButton_Type
+  };
+
+  // canvas is the canvas to draw onto, and rect gives the size of the
+  // control. ctype and cstate specify the type and state of the control.
+  Control(skia::PlatformCanvas *canvas, const SkIRect &rect,
+          Type ctype, State cstate);
+  ~Control();
+
+  // Draws the control.
+  void draw();
+
+  // Use this for TextField controls instead, because the logic
+  // for drawing them is dependent on what WebKit tells us to do.
+  // If draw_edges is true, draw an edge around the control. If
+  // fill_content_area is true, fill the content area with the given color.
+  void drawTextField(bool draw_edges, bool fill_content_area, SkColor color);
+
+ private:
+  // Draws a box of size specified by irect, filled with the given color.
+  // The box will have a border drawn in the default edge color.
+  void box(const SkIRect &irect, SkColor color);
+
+
+  // Draws a triangle of size specified by the three pairs of coordinates,
+  // filled with the given color. The box will have an edge drawn in the
+  // default edge color.
+  void triangle(int x0, int y0, int x1, int y1, int x2, int y2,
+                SkColor color);
+
+  // Draws a rectangle the size of the control with rounded corners, filled
+  // with the specified color (and with a border in the default edge color).
+  void roundRect(SkColor color);
+
+  // Draws an oval the size of the control, filled with the specified color
+  // and with a border in the default edge color.
+  void oval(SkColor color);
+
+  // Draws a circle centered in the control with the specified radius,
+  // filled with the specified color, and with a border draw in the
+  // default edge color.
+  void circle(SkScalar radius, SkColor color);
+
+  // Draws a box the size of the control, filled with the outer_color and
+  // with a border in the default edge color, and then draws another box
+  // indented on all four sides by the specified amounts, filled with the
+  // inner color and with a border in the default edge color.
+  void nested_boxes(int indent_left, int indent_top,
+                    int indent_right, int indent_bottom,
+                    SkColor outer_color, SkColor inner_color);
+
+  // Draws a line between the two points in the given color.
+  void line(int x0, int y0, int x1, int y1, SkColor color);
+
+  // Draws a distinctive mark on the control for each state, so that the
+  // state of the control can be determined without needing to know which
+  // color is which.
+  void markState();
+
+  skia::PlatformCanvas* canvas_;
+  const SkIRect irect_;
+  const Type type_;
+  const State state_;
+  const SkColor edge_color_;
+  const SkColor bg_color_;
+  const SkColor fg_color_;
+
+  // The following are convenience accessors for irect_.
+  const int left_;
+  const int right_;
+  const int top_;
+  const int bottom_;
+  const int width_;
+  const int height_;
+
+  DISALLOW_COPY_AND_ASSIGN(Control);
+};
+
+}  // namespace TestShellWebTheme
+
+#endif  // WEBKIT_TOOLS_TEST_SHELL_TEST_SHELL_WEBTHEMECONTROL_H_
+