BeDecorator: make it compile, use tabs.

Crashes spectacularly like WinDecorator.

src/add-ons/decorators/BeDecorator/BeDecorator.h

@@ -18,7 +18,7 @@
 
 
 class Desktop;
-
+class ServerBitmap;
 
 class BeDecorAddOn : public DecorAddOn {
 public:
@@ -26,19 +26,36 @@ public:
 
 protected:
 	virtual Decorator*			_AllocateDecorator(DesktopSettings& settings,
-									BRect rect, window_look look, uint32 flags);
+									BRect rect);
 };
 
-
 class BeDecorator: public Decorator {
 public:
-								BeDecorator(DesktopSettings& settings,
-									BRect frame, window_look look,
-									uint32 flags);
+	class Tab : public Decorator::Tab {
+	public:
+								Tab();
+
+			uint32				tabOffset;
+			float				tabLocation;
+			float				textOffset;
+
+			BString				truncatedTitle;
+			int32				truncatedTitleLength;
+
+			bool				buttonFocus : 1;
+
+			bool				isHighlighted : 1;
+			ServerBitmap*		closeBitmaps[4];
+			ServerBitmap*		zoomBitmaps[4];
+
+			float				minTabSize;
+			float				maxTabSize;
+	};
+
+								BeDecorator(DesktopSettings& settings, BRect frame);
 	virtual						~BeDecorator();
 
-	virtual float				TabLocation() const
-									{ return (float)fTabOffset; }
+	virtual float				TabLocation(int32 tab) const;
 
 	virtual	bool				GetSettings(BMessage* settings) const;
 
@@ -48,48 +65,107 @@ public:
 	virtual	void				GetSizeLimits(int32* minWidth, int32* minHeight,
 									int32* maxWidth, int32* maxHeight) const;
 
-	virtual Region				RegionAt(BPoint where) const;
+	virtual Region				RegionAt(BPoint where, int32& tab) const;
+
+protected:
+			enum Component {
+				COMPONENT_TAB,
+
+				COMPONENT_CLOSE_BUTTON,
+				COMPONENT_ZOOM_BUTTON,
+
+				COMPONENT_LEFT_BORDER,
+				COMPONENT_RIGHT_BORDER,
+				COMPONENT_TOP_BORDER,
+				COMPONENT_BOTTOM_BORDER,
+
+				COMPONENT_RESIZE_CORNER
+			};
+
+			enum {
+				COLOR_TAB_FRAME_LIGHT	= 0,
+				COLOR_TAB_FRAME_DARK	= 1,
+				COLOR_TAB				= 2,
+				COLOR_TAB_LIGHT			= 3,
+				COLOR_TAB_BEVEL			= 4,
+				COLOR_TAB_SHADOW		= 5,
+				COLOR_TAB_TEXT			= 6
+			};
+
+			enum {
+				COLOR_BUTTON			= 0,
+				COLOR_BUTTON_LIGHT		= 1
+			};
+
+			typedef rgb_color ComponentColors[7];
 
 protected:
 	virtual void				_DoLayout();
+	virtual void				_DoTabLayout();
+			void				_DistributeTabSize(float delta);
 
-	virtual void				_DrawFrame(BRect r);
-	virtual void				_DrawTab(BRect r);
+	virtual	Decorator::Tab*		_AllocateNewTab();
+			BeDecorator::Tab*	_TabAt(int32 index) const;
 
-	virtual void				_DrawClose(BRect r);
-	virtual void				_DrawTitle(BRect r);
-	virtual void				_DrawZoom(BRect r);
+	virtual	void				_DrawFrame(BRect rect);
+	virtual	void				_DrawTab(Decorator::Tab* tab, BRect rect);
+	virtual	void				_DrawTitle(Decorator::Tab* tab, BRect rect);
 
-	virtual	void				_SetTitle(const char* string,
+	virtual	void				_DrawClose(Decorator::Tab* tab, bool direct,
+									BRect rect);
+	virtual	void				_DrawZoom(Decorator::Tab* tab, bool direct,
+									BRect rect);
+
+	virtual	void				_SetTitle(Decorator::Tab* tab, const char* string,
 									BRegion* updateRegion = NULL);
 
 	virtual void				_FontsChanged(DesktopSettings& settings,
 									BRegion* updateRegion);
-	virtual void				_SetLook(DesktopSettings& settings,
+	virtual void				_SetLook(Decorator::Tab* tab,
+									DesktopSettings& settings,
 									window_look look,
 									BRegion* updateRegion = NULL);
-	virtual void				_SetFlags(uint32 flags,
+	virtual void				_SetFlags(Decorator::Tab* tab, uint32 flags,
 									BRegion* updateRegion = NULL);
 
-	virtual void				_SetFocus();
+	virtual void				_SetFocus(Decorator::Tab* tab);
 
 	virtual	void				_MoveBy(BPoint offset);
 	virtual	void				_ResizeBy(BPoint offset, BRegion* dirty);
 
-	virtual bool				_SetTabLocation(float location,
+	virtual	bool				_AddTab(DesktopSettings& settings,
+									int32 index = -1,
 									BRegion* updateRegion = NULL);
+	virtual	bool				_RemoveTab(int32 index,
+									BRegion* updateRegion = NULL);
+	virtual	bool				_MoveTab(int32 from, int32 to, bool isMoving,
+									BRegion* updateRegion = NULL);
+
+	virtual bool				_SetTabLocation(Decorator::Tab* tab, float location,
+									bool isShifting, BRegion* updateRegion = NULL);
 
 	virtual	bool				_SetSettings(const BMessage& settings,
 									BRegion* updateRegion = NULL);
 
 	virtual	void				_GetFootprint(BRegion* region);
 
+			void				_GetButtonSizeAndOffset(const BRect& tabRect,
+									float* offset, float* size,
+									float* inset) const;
+
+	virtual	void				DrawButtons(Decorator::Tab* tab,
+									const BRect& invalid);
+
 private:
 			void				_UpdateFont(DesktopSettings& settings);
 			void				_DrawBlendedRect(BRect r, bool down);
-			void				_GetButtonSizeAndOffset(const BRect& tabRect,
-									float* offset, float*size) const;
-			void				_LayoutTabItems(const BRect& tabRect);
+			void				_LayoutTabItems(Decorator::Tab* _tab, const BRect& tabRect);
+			void 				_InvalidateBitmaps();
+
+	inline	float				_DefaultTextOffset() const;
+	inline	float				_SingleTabOffsetAndSize(float& tabSize);
+
+			void				_CalculateTabsRegion();
 
 private:
 			RGBColor			fButtonHighColor;
@@ -108,6 +184,9 @@ private:
 
 			int32				fBorderWidth;
 
+			BRegion				fTabsRegion;
+			BRect				fOldMovingTab;
+
 			uint32				fTabOffset;
 			float				fTabLocation;
 			float				fTextOffset;