1 /* 2 * Copyright 2007-2009, Haiku, Inc. All rights reserved. 3 * Distributed under the terms of the MIT License. 4 */ 5 #ifndef _MENU_H 6 #define _MENU_H 7 8 9 #include <InterfaceDefs.h> 10 #include <List.h> 11 #include <View.h> 12 13 class BMenu; 14 class BMenuBar; 15 class BMenuItem; 16 17 18 namespace BPrivate { 19 class BMenuWindow; 20 class ExtraMenuData; 21 class TriggerList; 22 class MenuPrivate; 23 } 24 25 enum menu_layout { 26 B_ITEMS_IN_ROW = 0, 27 B_ITEMS_IN_COLUMN, 28 B_ITEMS_IN_MATRIX 29 }; 30 31 struct menu_info { 32 float font_size; 33 font_family f_family; 34 font_style f_style; 35 rgb_color background_color; 36 int32 separator; 37 bool click_to_open; 38 bool triggers_always_shown; 39 }; 40 41 status_t get_menu_info(menu_info* info); 42 status_t set_menu_info(menu_info* info); 43 44 typedef bool (*menu_tracking_hook)(BMenu* menu, void* state); 45 46 47 class BMenu : public BView { 48 public: 49 BMenu(const char* title, 50 menu_layout layout = B_ITEMS_IN_COLUMN); 51 BMenu(const char* title, float width, 52 float height); 53 BMenu(BMessage* archive); 54 55 virtual ~BMenu(); 56 57 static BArchivable* Instantiate(BMessage* archive); 58 virtual status_t Archive(BMessage* archive, 59 bool deep = true) const; 60 61 virtual void AttachedToWindow(); 62 virtual void DetachedFromWindow(); 63 virtual void AllAttached(); 64 virtual void AllDetached(); 65 66 virtual void Draw(BRect updateRect); 67 68 virtual void MessageReceived(BMessage* message); 69 virtual void KeyDown(const char* bytes, int32 numBytes); 70 71 virtual BSize MinSize(); 72 virtual BSize MaxSize(); 73 virtual BSize PreferredSize(); 74 virtual void GetPreferredSize(float* _width, 75 float* _height); 76 virtual void ResizeToPreferred(); 77 virtual void DoLayout(); 78 virtual void FrameMoved(BPoint newPosition); 79 virtual void FrameResized(float newWidth, float newHeight); 80 void InvalidateLayout(); 81 virtual void InvalidateLayout(bool descendants); 82 83 virtual void MakeFocus(bool focus = true); 84 85 bool AddItem(BMenuItem* item); 86 bool AddItem(BMenuItem* item, int32 index); 87 bool AddItem(BMenuItem* item, BRect frame); 88 bool AddItem(BMenu* menu); 89 bool AddItem(BMenu* menu, int32 index); 90 bool AddItem(BMenu* menu, BRect frame); 91 bool AddList(BList* list, int32 index); 92 93 bool AddSeparatorItem(); 94 95 bool RemoveItem(BMenuItem* item); 96 BMenuItem* RemoveItem(int32 index); 97 bool RemoveItems(int32 index, int32 count, 98 bool deleteItems = false); 99 bool RemoveItem(BMenu* menu); 100 101 BMenuItem* ItemAt(int32 index) const; 102 BMenu* SubmenuAt(int32 index) const; 103 int32 CountItems() const; 104 int32 IndexOf(BMenuItem* item) const; 105 int32 IndexOf(BMenu* menu) const; 106 BMenuItem* FindItem(uint32 command) const; 107 BMenuItem* FindItem(const char* name) const; 108 109 virtual status_t SetTargetForItems(BHandler* target); 110 virtual status_t SetTargetForItems(BMessenger messenger); 111 virtual void SetEnabled(bool state); 112 virtual void SetRadioMode(bool state); 113 virtual void SetTriggersEnabled(bool state); 114 virtual void SetMaxContentWidth(float maxWidth); 115 116 void SetLabelFromMarked(bool state); 117 bool IsLabelFromMarked(); 118 bool IsEnabled() const; 119 bool IsRadioMode() const; 120 bool AreTriggersEnabled() const; 121 bool IsRedrawAfterSticky() const; 122 float MaxContentWidth() const; 123 124 BMenuItem* FindMarked(); 125 126 BMenu* Supermenu() const; 127 BMenuItem* Superitem() const; 128 129 130 virtual BHandler* ResolveSpecifier(BMessage* message, 131 int32 index, BMessage* specifier, 132 int32 form, const char* property); 133 virtual status_t GetSupportedSuites(BMessage* data); 134 135 virtual status_t Perform(perform_code d, void* arg); 136 137 protected: 138 BMenu(BRect frame, const char* name, 139 uint32 resizeMask, uint32 flags, 140 menu_layout layout, bool resizeToFit); 141 142 virtual BPoint ScreenLocation(); 143 144 void SetItemMargins(float left, float top, 145 float right, float bottom); 146 void GetItemMargins(float* _left, float* _top, 147 float* _right, float* _bottom) const; 148 149 menu_layout Layout() const; 150 151 virtual void Show(); 152 void Show(bool selectFirstItem); 153 void Hide(); 154 BMenuItem* Track(bool startOpened = false, 155 BRect* specialRect = NULL); 156 157 public: 158 enum add_state { 159 B_INITIAL_ADD, 160 B_PROCESSING, 161 B_ABORT 162 }; 163 virtual bool AddDynamicItem(add_state state); 164 virtual void DrawBackground(BRect update); 165 166 void SetTrackingHook(menu_tracking_hook hook, 167 void* state); 168 169 private: 170 friend class BMenuBar; 171 friend class BPrivate::MenuPrivate; 172 friend status_t _init_interface_kit_(); 173 friend status_t set_menu_info(menu_info* info); 174 friend status_t get_menu_info(menu_info* info); 175 176 struct LayoutData; 177 178 virtual void _ReservedMenu3(); 179 virtual void _ReservedMenu4(); 180 virtual void _ReservedMenu5(); 181 virtual void _ReservedMenu6(); 182 183 BMenu& operator=(const BMenu& other); 184 185 void _InitData(BMessage* archive); 186 bool _Show(bool selectFirstItem = false); 187 void _Hide(); 188 BMenuItem* _Track(int* action, long start = -1); 189 190 void _UpdateNavigationArea(BPoint position, 191 BRect& navAreaRectAbove, 192 BRect& navAreaBelow); 193 194 void _UpdateStateOpenSelect(BMenuItem* item, 195 BPoint position, BRect& navAreaRectAbove, 196 BRect& navAreaBelow, 197 bigtime_t& selectedTime, 198 bigtime_t& navigationAreaTime); 199 void _UpdateStateClose(BMenuItem* item, 200 const BPoint& where, 201 const uint32& buttons); 202 203 bool _AddItem(BMenuItem* item, int32 index); 204 bool _RemoveItems(int32 index, int32 count, 205 BMenuItem* item, bool deleteItems = false); 206 bool _RelayoutIfNeeded(); 207 void _LayoutItems(int32 index); 208 BSize _ValidatePreferredSize(); 209 void _ComputeLayout(int32 index, bool bestFit, 210 bool moveItems, float* width, 211 float* height); 212 void _ComputeColumnLayout(int32 index, bool bestFit, 213 bool moveItems, BRect& outRect); 214 void _ComputeRowLayout(int32 index, bool bestFit, 215 bool moveItems, BRect& outRect); 216 void _ComputeMatrixLayout(BRect& outRect); 217 218 BRect _CalcFrame(BPoint where, bool* scrollOn); 219 220 protected: 221 void _DrawItems(BRect updateRect); 222 223 private: 224 bool _OverSuper(BPoint loc); 225 bool _OverSubmenu(BMenuItem* item, BPoint loc); 226 BPrivate::BMenuWindow* _MenuWindow(); 227 void _DeleteMenuWindow(); 228 BMenuItem* _HitTestItems(BPoint where, 229 BPoint slop = B_ORIGIN) const; 230 BRect _Superbounds() const; 231 void _CacheFontInfo(); 232 233 void _ItemMarked(BMenuItem* item); 234 void _Install(BWindow* target); 235 void _Uninstall(); 236 void _SelectItem(BMenuItem* item, 237 bool showSubmenu = true, 238 bool selectFirstItem = false); 239 bool _SelectNextItem(BMenuItem* item, bool forward); 240 BMenuItem* _NextItem(BMenuItem* item, bool forward) const; 241 void _SetIgnoreHidden(bool on); 242 void _SetStickyMode(bool on); 243 bool _IsStickyMode() const; 244 void _CalcTriggers(); 245 bool _ChooseTrigger(const char* title, int32& index, 246 uint32& trigger, 247 BPrivate::TriggerList& triggers); 248 void _UpdateWindowViewSize( 249 bool updatePosition = true); 250 bool _OkToProceed(BMenuItem* item); 251 252 bool _CustomTrackingWantsToQuit(); 253 254 int _State(BMenuItem** _item = NULL) const; 255 void _InvokeItem(BMenuItem* item, bool now = false); 256 void _QuitTracking(bool onlyThis = true); 257 258 static menu_info sMenuInfo; 259 static bool sAltAsCommandKey; 260 261 BMenuItem* fChosenItem; 262 BList fItems; 263 BRect fPad; 264 BMenuItem* fSelected; 265 BPrivate::BMenuWindow* fCachedMenuWindow; 266 BMenu* fSuper; 267 BMenuItem* fSuperitem; 268 BRect fSuperbounds; 269 float fAscent; 270 float fDescent; 271 float fFontHeight; 272 uint32 fState; 273 menu_layout fLayout; 274 BRect* fExtraRect; 275 float fMaxContentWidth; 276 BPoint* fInitMatrixSize; 277 BPrivate::ExtraMenuData* fExtraMenuData; 278 279 LayoutData* fLayoutData; 280 281 int32 _reserved; 282 283 char fTrigger; 284 bool fResizeToFit; 285 bool fUseCachedMenuLayout; 286 bool fEnabled; 287 bool fDynamicName; 288 bool fRadioMode; 289 bool fTrackNewBounds; 290 bool fStickyMode; 291 bool fIgnoreHidden; 292 bool fTriggerEnabled; 293 bool fRedrawAfterSticky; 294 bool fAttachAborted; 295 }; 296 297 #endif // _MENU_H 298