haiku/headers/private/shared/IconButton.h

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/*
* Copyright 2006-2011, Haiku.
* Distributed under the terms of the MIT License.
*
* Authors:
* Stephan Aßmus <superstippi@gmx.de>
*/
#ifndef ICON_BUTTON_H
#define ICON_BUTTON_H
//! GUI class that loads an image from disk and shows it as clickable button.
#include <Control.h>
#include <String.h>
class BBitmap;
class BMimeType;
namespace BPrivate {
class BIconButton : public BControl {
public:
BIconButton(const char* name,
const char* label = NULL,
BMessage* message = NULL,
BHandler* target = NULL);
virtual ~BIconButton();
// BView interface
virtual void MessageReceived(BMessage* message);
virtual void AttachedToWindow();
virtual void Draw(BRect updateRect);
virtual bool ShouldDrawBorder() const;
virtual void DrawBorder(BRect& frame,
const BRect& updateRect,
const rgb_color& backgroundColor,
uint32 controlLookFlags);
virtual void DrawBackground(BRect& frame,
const BRect& updateRect,
const rgb_color& backgroundColor,
uint32 controlLookFlags);
virtual void MouseDown(BPoint where);
virtual void MouseUp(BPoint where);
virtual void MouseMoved(BPoint where, uint32 transit,
const BMessage* message);
virtual void GetPreferredSize(float* width,
float* height);
virtual BSize MinSize();
virtual BSize MaxSize();
// BInvoker interface
virtual status_t Invoke(BMessage* message = NULL);
// BControl interface
virtual void SetValue(int32 value);
virtual void SetEnabled(bool enable);
// BIconButton
bool IsValid() const;
void SetPressed(bool pressed);
bool IsPressed() const;
status_t SetIcon(int32 resourceID);
status_t SetIcon(const char* pathToBitmap);
virtual status_t SetIcon(const BBitmap* bitmap,
uint32 flags = 0);
status_t SetIcon(const BMimeType* fileType,
bool small = true);
status_t SetIcon(const unsigned char* bitsFromQuickRes,
uint32 width, uint32 height,
color_space format,
bool convertToBW = false);
void ClearIcon();
void TrimIcon(bool keepAspect = true);
BBitmap* Bitmap() const;
// caller has to delete the returned bitmap
protected:
bool IsInside() const;
void SetInside(bool inside);
private:
BBitmap* _ConvertToRGB32(const BBitmap* bitmap) const;
status_t _MakeBitmaps(const BBitmap* bitmap);
void _DeleteBitmaps();
void _SendMessage() const;
void _Update();
void _SetTracking(bool state);
void _SetFlags(uint32 flags, bool set);
bool _HasFlags(uint32 flags) const;
private:
uint32 fButtonState;
BBitmap* fNormalBitmap;
BBitmap* fDisabledBitmap;
BBitmap* fClickedBitmap;
BBitmap* fDisabledClickedBitmap;
BHandler* fTargetCache;
};
} // namespac BPrivate
using BPrivate::BIconButton;
#endif // ICON_BUTTON_H