Atlas - SDL_BeApp.cc
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1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2025 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "SDL_internal.h"
22
23#ifdef SDL_PLATFORM_HAIKU
24
25// Handle the BeApp specific portions of the application
26
27#include <AppKit.h>
28#include <storage/AppFileInfo.h>
29#include <storage/Path.h>
30#include <storage/Entry.h>
31#include <storage/File.h>
32#include <unistd.h>
33#include <memory>
34
35#include "SDL_BApp.h"   // SDL_BLooper class definition
36#include "SDL_BeApp.h"
37
38#include "../../video/haiku/SDL_BWin.h"
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44#include "../../thread/SDL_systhread.h"
45
46// Flag to tell whether or not the Be application and looper are active or not
47static int SDL_BeAppActive = 0;
48static SDL_Thread *SDL_AppThread = NULL;
49SDL_BLooper *SDL_Looper = NULL;
50
51
52// Default application signature
53const char *SDL_signature = "application/x-SDL-executable";
54
55
56// Create a descendant of BApplication
57class SDL_BApp : public BApplication {
58public:
59    SDL_BApp(const char *signature) :
60        BApplication(signature) {
61    }
62
63
64    virtual ~SDL_BApp() {
65    }
66
67
68    virtual void RefsReceived(BMessage *message) {
69        entry_ref entryRef;
70        for (int32 i = 0; message->FindRef("refs", i, &entryRef) == B_OK; i++) {
71            BPath referencePath = BPath(&entryRef);
72            SDL_SendDropFile(NULL, NULL, referencePath.Path());
73        }
74        return;
75    }
76};
77
78
79static int StartBeApp(void *unused)
80{
81    std::unique_ptr<BApplication> App;
82
83    (void)unused;
84    // dig resources for correct signature
85    image_info info;
86    int32 cookie = 0;
87    if (get_next_image_info(B_CURRENT_TEAM, &cookie, &info) == B_OK) {
88        BFile f(info.name, O_RDONLY);
89        if (f.InitCheck() == B_OK) {
90            BAppFileInfo app_info(&f);
91            if (app_info.InitCheck() == B_OK) {
92                char sig[B_MIME_TYPE_LENGTH];
93                if (app_info.GetSignature(sig) == B_OK) {
94                    SDL_signature = strndup(sig, B_MIME_TYPE_LENGTH);
95                }
96            }
97        }
98    }
99
100    App = std::unique_ptr<BApplication>(new SDL_BApp(SDL_signature));
101
102    App->Run();
103    return 0;
104}
105
106
107static bool StartBeLooper()
108{
109    if (!be_app) {
110        SDL_AppThread = SDL_CreateThread(StartBeApp, "SDLApplication", NULL);
111        if (!SDL_AppThread) {
112            return SDL_SetError("Couldn't create BApplication thread");
113        }
114
115        do {
116            SDL_Delay(10);
117        } while ((!be_app) || be_app->IsLaunching());
118    }
119
120    SDL_Looper = new SDL_BLooper("SDLLooper");
121    SDL_Looper->Run();
122    return true;
123}
124
125
126// Initialize the Be Application, if it's not already started
127bool SDL_InitBeApp(void)
128{
129    // Create the BApplication that handles appserver interaction
130    if (SDL_BeAppActive <= 0) {
131        if (!StartBeLooper()) {
132            return false;
133        }
134
135        // Mark the application active
136        SDL_BeAppActive = 0;
137    }
138
139    // Increment the application reference count
140    ++SDL_BeAppActive;
141
142    // The app is running, and we're ready to go
143    return true;
144}
145
146// Quit the Be Application, if there's nothing left to do
147void SDL_QuitBeApp(void)
148{
149    // Decrement the application reference count
150    --SDL_BeAppActive;
151
152    // If the reference count reached zero, clean up the app
153    if (SDL_BeAppActive == 0) {
154        SDL_Looper->Lock();
155        SDL_Looper->Quit();
156        SDL_Looper = NULL;
157        if (SDL_AppThread) {
158            if (be_app != NULL) {       // Not tested
159                be_app->PostMessage(B_QUIT_REQUESTED);
160            }
161            SDL_WaitThread(SDL_AppThread, NULL);
162            SDL_AppThread = NULL;
163        }
164        // be_app should now be NULL since be_app has quit
165    }
166}
167
168#ifdef __cplusplus
169}
170#endif
171
172// SDL_BApp functions
173void SDL_BLooper::ClearID(SDL_BWin *bwin) {
174    _SetSDLWindow(NULL, bwin->GetID());
175    int32 i = _GetNumWindowSlots() - 1;
176    while (i >= 0 && GetSDLWindow(i) == NULL) {
177        _PopBackWindow();
178        --i;
179    }
180}
181
182#endif // SDL_PLATFORM_HAIKU
183
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