haiku/headers/os/interface/StatusBar.h

/*
 * Copyright 2006, Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef _STATUS_BAR_H
#define _STATUS_BAR_H


#include <String.h>
#include <View.h>


class BStatusBar : public BView {
	public:
		BStatusBar(BRect frame, const char* name, const char* label = NULL,
			const char* trailingLabel = NULL);
		BStatusBar(const char* name, const char* label = NULL,
			const char* trailingLabel = NULL);
		BStatusBar(BMessage* archive);
		virtual ~BStatusBar();

		static BArchivable* Instantiate(BMessage* archive);
		virtual	status_t Archive(BMessage* archive, bool deep = true) const;

		virtual void AttachedToWindow();
		virtual void MessageReceived(BMessage* message);
		virtual void Draw(BRect updateRect);

		virtual void SetBarColor(rgb_color color);
		virtual void SetBarHeight(float height);

		virtual void SetText(const char* string);
		virtual void SetTrailingText(const char* string);
		virtual void SetMaxValue(float max);

		virtual void Update(float delta, const char* text = NULL,
			const char* trailingText = NULL);
		virtual void Reset(const char* label = NULL,
			const char* trailingLabel = NULL);
		virtual void SetTo(float value, const char* text = NULL,
			const char* trailingText = NULL);

		float CurrentValue() const;
		float MaxValue() const;
		rgb_color BarColor() const;
		float BarHeight() const;

		const char* Text() const;
		const char* TrailingText() const;
		const char* Label() const;
		const char* TrailingLabel() const;

		virtual	void MouseDown(BPoint point);
		virtual	void MouseUp(BPoint point);
		virtual	void WindowActivated(bool state);
		virtual	void MouseMoved(BPoint point, uint32 transit,
			const BMessage* dragMessage);
		virtual	void DetachedFromWindow();
		virtual	void FrameMoved(BPoint newPosition);
		virtual	void FrameResized(float newWidth, float newHeight);

		virtual BHandler* ResolveSpecifier(BMessage* message, int32 index,
			BMessage* specifier, int32 what, const char* property);

		virtual void ResizeToPreferred();
		virtual void GetPreferredSize(float* _width, float* _height);
		virtual void MakeFocus(bool focus = true);
		virtual void AllAttached();
		virtual void AllDetached();
		virtual status_t GetSupportedSuites(BMessage* data);

		virtual status_t Perform(perform_code d, void* arg);

		// Layout methods
		virtual BSize MinSize();
		virtual BSize MaxSize();
		virtual BSize PreferredSize();

	private:
		virtual	void _ReservedStatusBar2();
		virtual	void _ReservedStatusBar3();
		virtual	void _ReservedStatusBar4();

		BStatusBar &operator=(const BStatusBar& other);

		void _InitObject();
		void _SetTextData(BString& text, float& width, const char* string, float pos,
			bool rightAligned);
		BRect _BarFrame(const font_height* fontHeight = NULL) const;
		float _BarPosition(const BRect& barFrame) const;

		BString fLabel;
		BString fTrailingLabel;
		BString fText;
		BString fTrailingText;
		float fMax;
		float fCurrent;
		float fBarHeight;
		float fLabelWidth;
		float fTrailingLabelWidth;
		float fTextWidth;
		float fTrailingTextWidth;
		rgb_color fBarColor;
		bool fCustomBarHeight;

		uint32 _reserved[2];
};

#endif	// _STATUS_BAR_H