Add new views::LabelButton and LabelButtonBorder.

ui/views/controls/button/label_button.h

+// Copyright (c) 2012 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_VIEWS_CONTROLS_BUTTON_LABEL_BUTTON_H_
+#define UI_VIEWS_CONTROLS_BUTTON_LABEL_BUTTON_H_
+
+#include <string>
+
+#include "base/compiler_specific.h"
+#include "third_party/skia/include/core/SkColor.h"
+#include "ui/gfx/image/image.h"
+#include "ui/views/controls/button/custom_button.h"
+#include "ui/views/controls/image_view.h"
+#include "ui/views/controls/label.h"
+#include "ui/views/native_theme_delegate.h"
+
+namespace views {
+
+// LabelButton is an alternative to TextButton, it's not focusable by default.
+class VIEWS_EXPORT LabelButton : public CustomButton,
+                                 public NativeThemeDelegate {
+ public:
+  LabelButton(ButtonListener* listener, const string16& text);
+  virtual ~LabelButton();
+
+  // Get or set the image shown for the specified button state.
+  // GetImage returns the image for BS_NORMAL if the state's image is empty.
+  const gfx::ImageSkia& GetImage(ButtonState for_state);
+  void SetImage(ButtonState for_state, const gfx::ImageSkia& image);
+
+  // The Label accessor and utility functions.
+  Label* GetLabel() const;

[sky, 2012/10/11 19:32:01]

Is there a need to expose this? I think the label and imageview are
implementation details.

[msw, 2012/10/11 20:27:01]

Done; (required adding GetText() and [G|S]etTextMultiLine()).
Replacing TextButton will also require exposing Label's shadowing.
I hoped to avoid exposing Label functions, but it's a trade-off.

+  void SetText(const string16& text);
+  void SetTextColor(ButtonState for_state, SkColor color);
+
+  // Get or set the horizontal alignment used for the button.
+  // The optional image will lead the text, unless the button is right-aligned.
+  Label::Alignment GetHorizontalAlignment() const;
+  void SetHorizontalAlignment(Label::Alignment alignment);
+
+  // Call set_min_size(gfx::Size()) to clear the monotonically increasing size.
+  void set_min_size(gfx::Size min_size) { min_size_ = min_size; }
+  void set_max_size(gfx::Size max_size) { max_size_ = max_size; }
+
+  bool default_button() const { return default_button_; }
+  void SetDefaultButton(bool default_button);
+
+  bool native_theme() const { return native_theme_; }
+  void SetNativeTheme(bool native_theme);
+
+  // Overridden from CustomButton:
+  virtual void StateChanged() OVERRIDE;
+
+  // Overridden from View:
+  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual std::string GetClassName() const OVERRIDE;
+  virtual void ChildPreferredSizeChanged(View* child) OVERRIDE;
+
+ protected:
+  // Overridden from NativeThemeDelegate:
+  virtual ui::NativeTheme::Part GetThemePart() const OVERRIDE;
+  virtual gfx::Rect GetThemePaintRect() const OVERRIDE;
+  virtual ui::NativeTheme::State GetThemeState(
+      ui::NativeTheme::ExtraParams* params) const OVERRIDE;
+  virtual const ui::Animation* GetThemeAnimation() const OVERRIDE;
+  virtual ui::NativeTheme::State GetBackgroundThemeState(
+      ui::NativeTheme::ExtraParams* params) const OVERRIDE;
+  virtual ui::NativeTheme::State GetForegroundThemeState(
+      ui::NativeTheme::ExtraParams* params) const OVERRIDE;
+
+  // Fill |params| with information about the button.
+  virtual void GetExtraParams(ui::NativeTheme::ExtraParams* params) const;
+
+ private:
+  // Call to reset the LayoutManager on alignment (or major content) changes.
+  void UpdateLayout();
+
+  // The image and label shown in the button; owned by this class.
+  scoped_ptr<ImageView> image_;
+  scoped_ptr<Label> label_;
+
+  // The images and colors for each button state.
+  gfx::ImageSkia button_state_images_[BS_COUNT];
+  SkColor button_state_colors_[BS_COUNT];
+
+  // |min_size_| increases monotonically with the preferred size.
+  gfx::Size min_size_;
+  // |max_size_| may be set to clamp the preferred size.
+  gfx::Size max_size_;
+
+  // Flag indicating default button behavior via accelerator handling.
+  bool default_button_;
+
+  // Flag indicating native theme styling (or Views styling).
+  bool native_theme_;
+
+  DISALLOW_COPY_AND_ASSIGN(LabelButton);
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_CONTROLS_BUTTON_LABEL_BUTTON_H_