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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_IMAGE_VIEW_H__
#define CHROME_VIEWS_IMAGE_VIEW_H__
#include <windows.h>
#include "chrome/views/view.h"
#include "SkBitmap.h"
class ChromeCanvas;
namespace ChromeViews {
/////////////////////////////////////////////////////////////////////////////
//
// ImageView class.
//
// An ImageView can display an image from an SkBitmap. If a size is provided,
// the ImageView will resize the provided image to fit if it is too big or will
// center the image if smaller. Otherwise, the preferred size matches the
// provided image size.
//
/////////////////////////////////////////////////////////////////////////////
class ImageView : public View {
public:
enum Alignment {
LEADING = 0,
CENTER,
TRAILING
};
ImageView();
virtual ~ImageView();
// Set the bitmap that should be displayed.
void SetImage(const SkBitmap& bm);
// Set the bitmap that should be displayed from a pointer. Reset the image
// if the pointer is NULL. The pointer contents is copied in the receiver's
// bitmap.
void SetImage(SkBitmap* bm);
// Returns the bitmap currently displayed or NULL of none is currently set.
// The returned bitmap is still owned by the ImageView.
const SkBitmap& GetImage();
// Set the desired image size for the receiving ImageView.
void SetImageSize(const CSize& image_size);
// Return the preferred size for the receiving view. Returns false if the
// preferred size is not defined, which means that the view uses the image
// size.
bool GetImageSize(CSize* image_size);
// Reset the image size to the current image dimensions.
void ResetImageSize();
// Set / Get the horizontal alignment.
void SetHorizontalAlignment(Alignment ha);
Alignment GetHorizontalAlignment();
// Set / Get the vertical alignment.
void SetVerticalAlignment(Alignment va);
Alignment GetVerticalAlignment();
// Set / Get the tooltip text.
void SetTooltipText(const std::wstring& tooltip);
std::wstring GetTooltipText();
// Return whether the image should be centered inside the view.
// Overriden from View
virtual void GetPreferredSize(CSize* out);
virtual void Paint(ChromeCanvas* canvas);
// Overriden from View.
virtual bool GetTooltipText(int x, int y, std::wstring* tooltip);
private:
// Compute the image origin given the desired size and the receiver alignment
// properties.
void ComputeImageOrigin(int image_width, int image_height, int *x, int *y);
// Whether the image size is set.
bool image_size_set_;
// The actual image size.
CSize image_size_;
// The underlying bitmap.
SkBitmap image_;
// Horizontal alignment.
Alignment horiz_alignment_;
// Vertical alignment.
Alignment vert_alignment_;
// The current tooltip text.
std::wstring tooltip_text_;
DISALLOW_EVIL_CONSTRUCTORS(ImageView);
};
}
#endif // CHROME_VIEWS_IMAGE_VIEW_H__
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