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 Haiku 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 50status_t TestForAddonExistence(const char* name, directory_which which, 51 const char* section, BPath& outPath); 52 53// Reference counted object 54class Object { 55private: 56 int32 fRefCount; 57 58public: 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 81class AutoReply { 82 BMessage* fSender; 83 BMessage fReply; 84 85public: 86 AutoReply(BMessage* sender, uint32 what); 87 ~AutoReply(); 88 void SetReply(BMessage* m) { fReply = *m; } 89}; 90 91// mimetype from sender 92bool MimeTypeForSender(BMessage* sender, BString& mime); 93// load bitmap from application resources 94BBitmap* 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 97BPicture *BitmapToPicture(BView* view, BBitmap *bitmap); 98BPicture *BitmapToGrayedPicture(BView* view, BBitmap *bitmap); 99 100#endif 101