1 /*****************************************************************************/ 2 // BeUtils.h 3 // 4 // Version: 1.0.0d1 5 // 6 // Several utilities for writing applications for the BeOS. It are small 7 // very specific functions, but generally useful (could be here because of a 8 // lack in the APIs, or just sheer lazyness :)) 9 // 10 // Authors 11 // Ithamar R. Adema 12 // Michael Pfeiffer 13 // 14 // This application and all source files used in its construction, except 15 // where noted, are licensed under the MIT License, and have been written 16 // and are: 17 // 18 // Copyright (c) 2001, 2002 OpenBeOS Project 19 // 20 // Permission is hereby granted, free of charge, to any person obtaining a 21 // copy of this software and associated documentation files (the "Software"), 22 // to deal in the Software without restriction, including without limitation 23 // the rights to use, copy, modify, merge, publish, distribute, sublicense, 24 // and/or sell copies of the Software, and to permit persons to whom the 25 // Software is furnished to do so, subject to the following conditions: 26 // 27 // The above copyright notice and this permission notice shall be included 28 // in all copies or substantial portions of the Software. 29 // 30 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 31 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 32 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 33 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 34 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 35 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 36 // DEALINGS IN THE SOFTWARE. 37 /*****************************************************************************/ 38 39 #ifndef _BE_UTILS_H 40 #define _BE_UTILS_H 41 42 #include <FindDirectory.h> 43 #include <Path.h> 44 #include <SupportDefs.h> 45 #include <Picture.h> 46 #include <PictureButton.h> 47 #include <TranslatorFormats.h> 48 #include <TranslationUtils.h> 49 50 status_t TestForAddonExistence(const char* name, directory_which which, 51 const char* section, BPath& outPath); 52 53 // Reference counted object 54 class Object { 55 private: 56 volatile int32 fRefCount; 57 58 public: 59 // After construction reference count is 1 60 Object() : fRefCount(1) { } 61 // dtor should be private, but ie. ObjectList requires a public dtor! 62 virtual ~Object() { }; 63 64 // thread-safe as long as thread that calls Acquire has already 65 // a reference to the object 66 void Acquire() { 67 atomic_add(&fRefCount, 1); 68 } 69 70 bool Release() { 71 if (atomic_add(&fRefCount, -1) == 1) { 72 delete this; return true; 73 } else { 74 return false; 75 } 76 } 77 }; 78 79 // Automatically send a reply to sender on destruction of object 80 // and delete sender 81 class AutoReply { 82 BMessage* fSender; 83 BMessage fReply; 84 85 public: 86 AutoReply(BMessage* sender, uint32 what); 87 ~AutoReply(); 88 void SetReply(BMessage* m) { fReply = *m; } 89 }; 90 91 // mimetype from sender 92 bool MimeTypeForSender(BMessage* sender, BString& mime); 93 // load bitmap from application resources 94 BBitmap* LoadBitmap(const char* name, uint32 type_code = B_TRANSLATOR_BITMAP); 95 // convert bitmap to picture; view must be attached to a window! 96 // returns NULL if bitmap is NULL 97 BPicture *BitmapToPicture(BView* view, BBitmap *bitmap); 98 BPicture *BitmapToGrayedPicture(BView* view, BBitmap *bitmap); 99 100 #endif 101