/* * Copyright 2001-2006, Haiku. * Distributed under the terms of the MIT License. * * Authors: * Erik Jaesler (erik@cgsoftware.com) */ #ifndef _VIEW_H #define _VIEW_H #include #include #include #include #include #include #include // mouse button enum { B_PRIMARY_MOUSE_BUTTON = 0x01, B_SECONDARY_MOUSE_BUTTON = 0x02, B_TERTIARY_MOUSE_BUTTON = 0x04 }; // mouse transit enum { B_ENTERED_VIEW = 0, B_INSIDE_VIEW, B_EXITED_VIEW, B_OUTSIDE_VIEW }; // event mask enum { B_POINTER_EVENTS = 0x00000001, B_KEYBOARD_EVENTS = 0x00000002 }; // event mask options enum { B_LOCK_WINDOW_FOCUS = 0x00000001, B_SUSPEND_VIEW_FOCUS = 0x00000002, B_NO_POINTER_HISTORY = 0x00000004 }; enum { B_TRACK_WHOLE_RECT, B_TRACK_RECT_CORNER }; // set font mask enum { B_FONT_FAMILY_AND_STYLE = 0x00000001, B_FONT_SIZE = 0x00000002, B_FONT_SHEAR = 0x00000004, B_FONT_ROTATION = 0x00000008, B_FONT_SPACING = 0x00000010, B_FONT_ENCODING = 0x00000020, B_FONT_FACE = 0x00000040, B_FONT_FLAGS = 0x00000080, B_FONT_FALSE_BOLD_WIDTH = 0x00000100, B_FONT_ALL = 0x000001FF }; // view flags const uint32 B_FULL_UPDATE_ON_RESIZE = 0x80000000UL; /* 31 */ const uint32 _B_RESERVED1_ = 0x40000000UL; /* 30 */ const uint32 B_WILL_DRAW = 0x20000000UL; /* 29 */ const uint32 B_PULSE_NEEDED = 0x10000000UL; /* 28 */ const uint32 B_NAVIGABLE_JUMP = 0x08000000UL; /* 27 */ const uint32 B_FRAME_EVENTS = 0x04000000UL; /* 26 */ const uint32 B_NAVIGABLE = 0x02000000UL; /* 25 */ const uint32 B_SUBPIXEL_PRECISE = 0x01000000UL; /* 24 */ const uint32 B_DRAW_ON_CHILDREN = 0x00800000UL; /* 23 */ const uint32 B_INPUT_METHOD_AWARE = 0x00400000UL; /* 23 */ const uint32 _B_RESERVED7_ = 0x00200000UL; /* 22 */ const uint32 B_SUPPORTS_LAYOUT = 0x00100000UL; /* 21 */ const uint32 B_INVALIDATE_AFTER_LAYOUT = 0x00080000UL; /* 20 */ #define _RESIZE_MASK_ (0xffff) const uint32 _VIEW_TOP_ = 1UL; const uint32 _VIEW_LEFT_ = 2UL; const uint32 _VIEW_BOTTOM_ = 3UL; const uint32 _VIEW_RIGHT_ = 4UL; const uint32 _VIEW_CENTER_ = 5UL; inline uint32 _rule_(uint32 r1, uint32 r2, uint32 r3, uint32 r4) { return ((r1 << 12) | (r2 << 8) | (r3 << 4) | r4); } #define B_FOLLOW_NONE 0 #define B_FOLLOW_ALL_SIDES _rule_(_VIEW_TOP_, _VIEW_LEFT_, _VIEW_BOTTOM_, _VIEW_RIGHT_) #define B_FOLLOW_ALL B_FOLLOW_ALL_SIDES #define B_FOLLOW_LEFT _rule_(0, _VIEW_LEFT_, 0, _VIEW_LEFT_) #define B_FOLLOW_RIGHT _rule_(0, _VIEW_RIGHT_, 0, _VIEW_RIGHT_) #define B_FOLLOW_LEFT_RIGHT _rule_(0, _VIEW_LEFT_, 0, _VIEW_RIGHT_) #define B_FOLLOW_H_CENTER _rule_(0, _VIEW_CENTER_, 0, _VIEW_CENTER_) #define B_FOLLOW_TOP _rule_(_VIEW_TOP_, 0, _VIEW_TOP_, 0) #define B_FOLLOW_BOTTOM _rule_(_VIEW_BOTTOM_, 0, _VIEW_BOTTOM_, 0) #define B_FOLLOW_TOP_BOTTOM _rule_(_VIEW_TOP_, 0, _VIEW_BOTTOM_, 0) #define B_FOLLOW_V_CENTER _rule_(_VIEW_CENTER_, 0, _VIEW_CENTER_, 0) class BBitmap; class BCursor; class BLayout; class BLayoutContext; class BLayoutItem; class BMessage; class BPicture; class BPolygon; class BRegion; class BScrollBar; class BScrollView; class BShape; class BShelf; class BString; class BWindow; struct _array_data_; struct _array_hdr_; struct overlay_restrictions; namespace BPrivate { class ViewState; }; class BView : public BHandler { public: BView(const char* name, uint32 flags, BLayout* layout = NULL); BView(BRect frame, const char* name, uint32 resizeMask, uint32 flags); virtual ~BView(); BView(BMessage* data); static BArchivable* Instantiate(BMessage* data); virtual status_t Archive(BMessage* data, bool deep = true) const; virtual void AttachedToWindow(); virtual void AllAttached(); virtual void DetachedFromWindow(); virtual void AllDetached(); virtual void MessageReceived(BMessage* msg); void AddChild(BView* child, BView* before = NULL); bool AddChild(BLayoutItem* child); bool RemoveChild(BView* child); int32 CountChildren() const; BView* ChildAt(int32 index) const; BView* NextSibling() const; BView* PreviousSibling() const; bool RemoveSelf(); BWindow* Window() const; virtual void Draw(BRect updateRect); virtual void MouseDown(BPoint where); virtual void MouseUp(BPoint where); virtual void MouseMoved(BPoint where, uint32 code, const BMessage* a_message); virtual void WindowActivated(bool state); virtual void KeyDown(const char* bytes, int32 numBytes); virtual void KeyUp(const char* bytes, int32 numBytes); virtual void Pulse(); virtual void FrameMoved(BPoint new_position); virtual void FrameResized(float new_width, float new_height); virtual void TargetedByScrollView(BScrollView* scroll_view); void BeginRectTracking(BRect startRect, uint32 style = B_TRACK_WHOLE_RECT); void EndRectTracking(); void GetMouse(BPoint* location, uint32* buttons, bool checkMessageQueue = true); void DragMessage(BMessage* aMessage, BRect dragRect, BHandler* reply_to = NULL); void DragMessage(BMessage* aMessage, BBitmap* anImage, BPoint offset, BHandler* reply_to = NULL); void DragMessage(BMessage* aMessage, BBitmap* anImage, drawing_mode dragMode, BPoint offset, BHandler* reply_to = NULL); BView* FindView(const char* name) const; BView* Parent() const; BRect Bounds() const; BRect Frame() const; void ConvertToScreen(BPoint* pt) const; BPoint ConvertToScreen(BPoint pt) const; void ConvertFromScreen(BPoint* pt) const; BPoint ConvertFromScreen(BPoint pt) const; void ConvertToScreen(BRect* r) const; BRect ConvertToScreen(BRect r) const; void ConvertFromScreen(BRect* r) const; BRect ConvertFromScreen(BRect r) const; void ConvertToParent(BPoint* pt) const; BPoint ConvertToParent(BPoint pt) const; void ConvertFromParent(BPoint* pt) const; BPoint ConvertFromParent(BPoint pt) const; void ConvertToParent(BRect* r) const; BRect ConvertToParent(BRect r) const; void ConvertFromParent(BRect* r) const; BRect ConvertFromParent(BRect r) const; BPoint LeftTop() const; void GetClippingRegion(BRegion* region) const; virtual void ConstrainClippingRegion(BRegion* region); void ClipToPicture(BPicture* picture, BPoint where = B_ORIGIN, bool sync = true); void ClipToInversePicture(BPicture* picture, BPoint where = B_ORIGIN, bool sync = true); virtual void SetDrawingMode(drawing_mode mode); drawing_mode DrawingMode() const; void SetBlendingMode(source_alpha srcAlpha, alpha_function alphaFunc); void GetBlendingMode(source_alpha* srcAlpha, alpha_function* alphaFunc) const; virtual void SetPenSize(float size); float PenSize() const; void SetViewCursor(const BCursor* cursor, bool sync=true); virtual void SetViewColor(rgb_color c); void SetViewColor(uchar r, uchar g, uchar b, uchar a = 255); rgb_color ViewColor() const; void SetViewBitmap(const BBitmap* bitmap, BRect srcRect, BRect dstRect, uint32 followFlags = B_FOLLOW_TOP|B_FOLLOW_LEFT, uint32 options = B_TILE_BITMAP); void SetViewBitmap(const BBitmap* bitmap, uint32 followFlags = B_FOLLOW_TOP|B_FOLLOW_LEFT, uint32 options = B_TILE_BITMAP); void ClearViewBitmap(); status_t SetViewOverlay(const BBitmap* overlay, BRect srcRect, BRect dstRect, rgb_color* colorKey, uint32 followFlags = B_FOLLOW_TOP|B_FOLLOW_LEFT, uint32 options = 0); status_t SetViewOverlay(const BBitmap* overlay, rgb_color* colorKey, uint32 followFlags = B_FOLLOW_TOP|B_FOLLOW_LEFT, uint32 options = 0); void ClearViewOverlay(); virtual void SetHighColor(rgb_color a_color); void SetHighColor(uchar r, uchar g, uchar b, uchar a = 255); rgb_color HighColor() const; virtual void SetLowColor(rgb_color a_color); void SetLowColor(uchar r, uchar g, uchar b, uchar a = 255); rgb_color LowColor() const; void SetLineMode(cap_mode lineCap, join_mode lineJoin, float miterLimit = B_DEFAULT_MITER_LIMIT); join_mode LineJoinMode() const; cap_mode LineCapMode() const; float LineMiterLimit() const; void SetOrigin(BPoint pt); void SetOrigin(float x, float y); BPoint Origin() const; void PushState(); void PopState(); void MovePenTo(BPoint pt); void MovePenTo(float x, float y); void MovePenBy(float x, float y); BPoint PenLocation() const; void StrokeLine(BPoint toPt, pattern p = B_SOLID_HIGH); void StrokeLine(BPoint pt0, BPoint pt1, pattern p = B_SOLID_HIGH); void BeginLineArray(int32 count); void AddLine(BPoint pt0, BPoint pt1, rgb_color col); void EndLineArray(); void StrokePolygon(const BPolygon* aPolygon, bool closed = true, pattern p = B_SOLID_HIGH); void StrokePolygon(const BPoint* ptArray, int32 numPts, bool closed = true, pattern p = B_SOLID_HIGH); void StrokePolygon(const BPoint* ptArray, int32 numPts, BRect bounds, bool closed = true, pattern p = B_SOLID_HIGH); void FillPolygon(const BPolygon* aPolygon, pattern p = B_SOLID_HIGH); void FillPolygon(const BPoint* ptArray, int32 numPts, pattern p = B_SOLID_HIGH); void FillPolygon(const BPoint* ptArray, int32 numPts, BRect bounds, pattern p = B_SOLID_HIGH); void StrokeTriangle(BPoint pt1, BPoint pt2, BPoint pt3, BRect bounds, pattern p = B_SOLID_HIGH); void StrokeTriangle(BPoint pt1, BPoint pt2, BPoint pt3, pattern p = B_SOLID_HIGH); void FillTriangle(BPoint pt1, BPoint pt2, BPoint pt3, pattern p = B_SOLID_HIGH); void FillTriangle(BPoint pt1, BPoint pt2, BPoint pt3, BRect bounds, pattern p = B_SOLID_HIGH); void StrokeRect(BRect r, pattern p = B_SOLID_HIGH); void FillRect(BRect r, pattern p = B_SOLID_HIGH); void FillRegion(BRegion* a_region, pattern p= B_SOLID_HIGH); void InvertRect(BRect r); void StrokeRoundRect(BRect r, float xRadius, float yRadius, pattern p = B_SOLID_HIGH); void FillRoundRect(BRect r, float xRadius, float yRadius, pattern p = B_SOLID_HIGH); void StrokeEllipse(BPoint center, float xRadius, float yRadius, pattern p = B_SOLID_HIGH); void StrokeEllipse(BRect r, pattern p = B_SOLID_HIGH); void FillEllipse(BPoint center, float xRadius, float yRadius, pattern p = B_SOLID_HIGH); void FillEllipse(BRect r, pattern p = B_SOLID_HIGH); void StrokeArc(BPoint center, float xRadius, float yRadius, float start_angle, float arc_angle, pattern p = B_SOLID_HIGH); void StrokeArc(BRect r, float start_angle, float arc_angle, pattern p = B_SOLID_HIGH); void FillArc(BPoint center, float xRadius, float yRadius, float start_angle, float arc_angle, pattern p = B_SOLID_HIGH); void FillArc(BRect r, float start_angle, float arc_angle, pattern p = B_SOLID_HIGH); void StrokeBezier(BPoint* controlPoints, pattern p = B_SOLID_HIGH); void FillBezier(BPoint* controlPoints, pattern p = B_SOLID_HIGH); void StrokeShape(BShape* shape, pattern p = B_SOLID_HIGH); void FillShape(BShape* shape, pattern p = B_SOLID_HIGH); void CopyBits(BRect src, BRect dst); void DrawBitmapAsync(const BBitmap* aBitmap, BRect srcRect, BRect dstRect); void DrawBitmapAsync(const BBitmap* aBitmap); void DrawBitmapAsync(const BBitmap* aBitmap, BPoint where); void DrawBitmapAsync(const BBitmap* aBitmap, BRect dstRect); void DrawBitmap(const BBitmap* aBitmap, BRect srcRect, BRect dstRect); void DrawBitmap(const BBitmap* aBitmap); void DrawBitmap(const BBitmap* aBitmap, BPoint where); void DrawBitmap(const BBitmap* aBitmap, BRect dstRect); void DrawChar(char aChar); void DrawChar(char aChar, BPoint location); void DrawString(const char* aString, escapement_delta* delta = NULL); void DrawString(const char* aString, BPoint location, escapement_delta* delta = NULL); void DrawString(const char* aString, int32 length, escapement_delta* delta = NULL); void DrawString(const char* aString, int32 length, BPoint location, escapement_delta* delta = 0L); virtual void SetFont(const BFont* font, uint32 mask = B_FONT_ALL); void GetFont(BFont* font) const; void TruncateString(BString* in_out, uint32 mode, float width) const; float StringWidth(const char* string) const; float StringWidth(const char* string, int32 length) const; void GetStringWidths(char* stringArray[], int32 lengthArray[], int32 numStrings, float widthArray[]) const; void SetFontSize(float size); void ForceFontAliasing(bool enable); void GetFontHeight(font_height* height) const; void Invalidate(BRect invalRect); void Invalidate(const BRegion* invalRegion); void Invalidate(); void SetDiskMode(char* filename, long offset); void BeginPicture(BPicture* a_picture); void AppendToPicture(BPicture* a_picture); BPicture* EndPicture(); void DrawPicture(const BPicture* a_picture); void DrawPicture(const BPicture* a_picture, BPoint where); void DrawPicture(const char* filename, long offset, BPoint where); void DrawPictureAsync(const BPicture* a_picture); void DrawPictureAsync(const BPicture* a_picture, BPoint where); void DrawPictureAsync(const char* filename, long offset, BPoint where); status_t SetEventMask(uint32 mask, uint32 options=0); uint32 EventMask(); status_t SetMouseEventMask(uint32 mask, uint32 options=0); virtual void SetFlags(uint32 flags); uint32 Flags() const; virtual void SetResizingMode(uint32 mode); uint32 ResizingMode() const; void MoveBy(float dh, float dv); void MoveTo(BPoint where); void MoveTo(float x, float y); void ResizeBy(float dh, float dv); void ResizeTo(float width, float height); void ResizeTo(BSize size); void ScrollBy(float dh, float dv); void ScrollTo(float x, float y); virtual void ScrollTo(BPoint where); virtual void MakeFocus(bool focusState = true); bool IsFocus() const; virtual void Show(); virtual void Hide(); bool IsHidden() const; bool IsHidden(const BView* looking_from) const; void Flush() const; void Sync() const; virtual void GetPreferredSize(float* width, float* height); virtual void ResizeToPreferred(); BScrollBar* ScrollBar(orientation posture) const; virtual BHandler* ResolveSpecifier(BMessage* msg, int32 index, BMessage* specifier, int32 form, const char* property); virtual status_t GetSupportedSuites(BMessage* data); bool IsPrinting() const; void SetScale(float scale) const; float Scale() const; // new for Haiku virtual status_t Perform(perform_code d, void* arg); virtual void DrawAfterChildren(BRect r); // layout related virtual BSize MinSize(); virtual BSize MaxSize(); virtual BSize PreferredSize(); virtual BAlignment LayoutAlignment(); void SetExplicitMinSize(BSize size); void SetExplicitMaxSize(BSize size); void SetExplicitPreferredSize(BSize size); void SetExplicitAlignment(BAlignment alignment); BSize ExplicitMinSize() const; BSize ExplicitMaxSize() const; BSize ExplicitPreferredSize() const; BAlignment ExplicitAlignment() const; virtual bool HasHeightForWidth(); virtual void GetHeightForWidth(float width, float* min, float* max, float* preferred); virtual void SetLayout(BLayout* layout); BLayout* GetLayout() const; virtual void InvalidateLayout(bool descendants = false); void EnableLayoutInvalidation(); void DisableLayoutInvalidation(); bool IsLayoutValid() const; BLayoutContext* LayoutContext() const; void Layout(bool force); void Relayout(); protected: virtual void DoLayout(); private: void _Layout(bool force, BLayoutContext* context); private: struct LayoutData; friend class BBitmap; friend class BLayout; friend class BPrintJob; friend class BScrollBar; friend class BShelf; friend class BTabView; friend class BWindow; virtual void _ReservedView11(); virtual void _ReservedView12(); virtual void _ReservedView13(); virtual void _ReservedView14(); virtual void _ReservedView15(); virtual void _ReservedView16(); BView(const BView&); BView& operator=(const BView&); void _InitData(BRect frame, const char* name, uint32 resizeMask, uint32 flags); status_t _SetViewBitmap(const BBitmap* bitmap, BRect srcRect, BRect dstRect, uint32 followFlags, uint32 options); void _ClipToPicture(BPicture* picture, BPoint where, bool invert, bool sync); bool _CheckOwnerLockAndSwitchCurrent() const; bool _CheckOwnerLock() const; void _CheckLockAndSwitchCurrent() const; void _CheckLock() const; void _SwitchServerCurrentView() const; void _SetOwner(BWindow* newOwner); void _RemoveCommArray(); BShelf* _Shelf() const; void _SetShelf(BShelf* shelf); void _MoveTo(int32 x, int32 y); void _ResizeBy(int32 deltaWidth, int32 deltaHeight); void _ParentResizedBy(int32 deltaWidth, int32 deltaHeight); void _ConvertToScreen(BPoint* pt, bool checkLock) const; void _ConvertFromScreen(BPoint* pt, bool checkLock) const; void _ConvertToParent(BPoint* pt, bool checkLock) const; void _ConvertFromParent(BPoint* pt, bool checkLock) const; void _Activate(bool state); void _Attach(); void _Detach(); void _Draw(BRect screenUpdateRect); void _DrawAfterChildren(BRect screenUpdateRect); void _Pulse(); void _UpdateStateForRemove(); void _UpdatePattern(::pattern pattern); void _FlushIfNotInTransaction(); bool _CreateSelf(); bool _AddChildToList(BView* child, BView* before = NULL); bool _RemoveChildFromList(BView* child); bool _AddChild(BView *child, BView *before); bool _RemoveSelf(); // Debugging methods void _PrintToStream(); void _PrintTree(); int32 server_token; uint32 fFlags; BPoint fParentOffset; BWindow* fOwner; BView* fParent; BView* fNextSibling; BView* fPreviousSibling; BView* fFirstChild; int16 fShowLevel; bool fTopLevelView; bool fNoISInteraction; BPicture* fCurrentPicture; _array_data_* fCommArray; BScrollBar* fVerScroller; BScrollBar* fHorScroller; bool fIsPrinting; bool fAttached; bool _unused_bool1; bool _unused_bool2; BPrivate::ViewState* fState; BRect fBounds; BShelf* fShelf; uint32 fEventMask; uint32 fEventOptions; uint32 fMouseEventOptions; LayoutData* fLayoutData; uint32 _reserved[7]; }; // inline definitions ---------------------------------------------------------- inline void BView::ScrollTo(float x, float y) { ScrollTo(BPoint(x, y)); } inline void BView::SetViewColor(uchar r, uchar g, uchar b, uchar a) { rgb_color color; color.red = r; color.green = g; color.blue = b; color.alpha = a; SetViewColor(color); } inline void BView::SetHighColor(uchar r, uchar g, uchar b, uchar a) { rgb_color color; color.red = r; color.green = g; color.blue = b; color.alpha = a; SetHighColor(color); } inline void BView::SetLowColor(uchar r, uchar g, uchar b, uchar a) { rgb_color color; color.red = r; color.green = g; color.blue = b; color.alpha = a; SetLowColor(color); } #endif // _VIEW_H