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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CHROME_VIEWS_TEXT_BUTTON_H__
#define CHROME_VIEWS_TEXT_BUTTON_H__
#include <windows.h>
#include "chrome/common/gfx/chrome_font.h"
#include "chrome/views/border.h"
#include "chrome/views/base_button.h"
#include "skia/include/SkBitmap.h"
namespace ChromeViews {
class MouseEvent;
////////////////////////////////////////////////////////////////////////////////
//
// TextButtonBorder
//
// A Border subclass that paints a TextButton's background layer -
// basically the button frame in the hot/pushed states.
//
////////////////////////////////////////////////////////////////////////////////
class TextButtonBorder : public Border {
public:
TextButtonBorder();
virtual ~TextButtonBorder();
// Render the background for the provided view
virtual void Paint(const View& view, ChromeCanvas* canvas) const;
// Returns the insets for the border.
virtual void GetInsets(gfx::Insets* insets) const;
private:
DISALLOW_EVIL_CONSTRUCTORS(TextButtonBorder);
// Images
struct MBBImageSet {
SkBitmap* top_left;
SkBitmap* top;
SkBitmap* top_right;
SkBitmap* left;
SkBitmap* center;
SkBitmap* right;
SkBitmap* bottom_left;
SkBitmap* bottom;
SkBitmap* bottom_right;
};
MBBImageSet hot_set_;
MBBImageSet pushed_set_;
};
////////////////////////////////////////////////////////////////////////////////
//
// TextButton
//
// A button which displays text and/or and icon that can be changed in
// response to actions. TextButton reserves space for the largest string
// passed to SetText. To reset the cached max size invoke ClearMaxTextSize.
//
////////////////////////////////////////////////////////////////////////////////
class TextButton : public BaseButton {
public:
TextButton(const std::wstring& text);
virtual ~TextButton();
typedef enum TextAlignment {
ALIGN_LEFT,
ALIGN_CENTER,
ALIGN_RIGHT
};
void GetPreferredSize(CSize* result);
void GetMinimumSize(CSize* result);
virtual bool OnMousePressed(const ChromeViews::MouseEvent& e);
// Call SetText once per string in your set of possible values at
// button creation time, so that it can contain the largest of them
// and avoid resizing the button when the text changes.
virtual void SetText(const std::wstring& text);
void TextButton::SetTextAlignment(TextAlignment alignment) {
alignment_ = alignment;
}
const std::wstring& GetText() { return text_; }
// Sets the icon.
void SetIcon(const SkBitmap& icon);
const SkBitmap& GetIcon() { return icon_; }
// TextButton remembers the maximum display size of the text passed to
// SetText. This method resets the cached maximum display size to the
// current size.
void ClearMaxTextSize();
virtual void Paint(ChromeCanvas* canvas);
virtual void Paint(ChromeCanvas* canvas, bool for_drag);
// Sets the enabled state. Setting the enabled state resets the color.
virtual void SetEnabled(bool enabled);
// Sets the max width. The preferred width of the button will never be larger
// then the specified value. A value <= 0 indicates the preferred width
// is not constrained in anyway.
void set_max_width(int max_width) { max_width_ = max_width; }
private:
std::wstring text_;
CSize text_size_;
// Track the size of the largest text string seen so far, so that
// changing text_ will not resize the button boundary.
CSize max_text_size_;
TextAlignment alignment_;
ChromeFont font_;
// Text color.
SkColor color_;
SkBitmap icon_;
// See setter for details.
int max_width_;
DISALLOW_EVIL_CONSTRUCTORS(TextButton);
};
} // namespace
#endif // CHROME_VIEWS_TEXT_BUTTON_H__
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