agg_platform_support.cpp

gnash 在pc和嵌入式下开发需要的源码

AGGView::Update()
{
    // trigger display update
    if (LockLooper()) {
        Invalidate();
        UnlockLooper();
    }
}


void
AGGView::ForceRedraw()
{
    // force a redraw (fRedraw = true;)
    // and trigger display update
    if (LockLooper()) {
        fRedraw = true;
        Invalidate();
        UnlockLooper();
    }
}


unsigned
AGGView::GetKeyFlags()
{
    uint32 buttons = fMouseButtons;
    uint32 mods = modifiers();
    unsigned flags = 0;
    if (buttons & B_PRIMARY_MOUSE_BUTTON)   flags |= agg::mouse_left;
    if (buttons & B_SECONDARY_MOUSE_BUTTON) flags |= agg::mouse_right;
    if (mods & B_SHIFT_KEY)                 flags |= agg::kbd_shift;
    if (mods & B_COMMAND_KEY)               flags |= agg::kbd_ctrl;
    return flags;
}

// #pragma mark -


class AGGWindow : public BWindow {
 public:
                    AGGWindow()
                    : BWindow(BRect(-50.0, -50.0, -10.0, -10.0),
                              "AGG Application", B_TITLED_WINDOW, B_ASYNCHRONOUS_CONTROLS)
                    {
                    }

    virtual bool    QuitRequested()
                    {
                        be_app->PostMessage(B_QUIT_REQUESTED);
                        return true;
                    }

            bool    Init(BRect frame, agg::platform_support* agg, agg::pix_format_e format,
                              bool flipY, uint32 flags)
                    {
                        MoveTo(frame.LeftTop());
                        ResizeTo(frame.Width(), frame.Height());

                        SetFlags(flags);

                        frame.OffsetTo(0.0, 0.0);
                        fView = new AGGView(frame, agg, format, flipY);
                        AddChild(fView);

                        return fView->Bitmap() != NULL;
                    }


        AGGView*    View() const
                    {
                        return fView;
                    }
 private:
    AGGView*        fView;
};

// #pragma mark -


class AGGApplication : public BApplication {
 public:
                    AGGApplication()
                    : BApplication("application/x-vnd.AGG-AGG")
                    {
                        fWindow = new AGGWindow();
                    }

    virtual void    ReadyToRun()
                    {
                        if (fWindow) {
                            fWindow->Show();
                        }
                    }

    virtual bool    Init(agg::platform_support* agg, int width, int height,
                         agg::pix_format_e format, bool flipY, uint32 flags)
                    {
                        BRect r(50.0, 50.0,
                                50.0 + width - 1.0,
                                50.0 + height - 1.0);
                        uint32 windowFlags = B_ASYNCHRONOUS_CONTROLS;
                        if (!(flags & agg::window_resize))
                            windowFlags |= B_NOT_RESIZABLE;

                        return fWindow->Init(r, agg, format, flipY, windowFlags);;
                    }


        AGGWindow*  Window() const
                    {
                        return fWindow;
                    }

 private:
    AGGWindow*      fWindow;
};


// #pragma mark -


namespace agg
{

class platform_specific {
 public:
                    platform_specific(agg::platform_support* agg,
                                      agg::pix_format_e format, bool flip_y)
                        : fAGG(agg),
                          fApp(NULL),
                          fFormat(format),
                          fFlipY(flip_y),
                          fTimerStart(system_time())
                    {
                        memset(fImages, 0, sizeof(fImages));
                        fApp = new AGGApplication();
                        fAppPath[0] = 0;
                        // figure out where we're running from
                        app_info info;
                        status_t ret = fApp->GetAppInfo(&info);
                        if (ret >= B_OK) {
                            BPath path(&info.ref);
                            ret = path.InitCheck();
                            if (ret >= B_OK) {
                                ret = path.GetParent(&path);
                                if (ret >= B_OK) {
                                    sprintf(fAppPath, "%s", path.Path());
                                } else {
                                    fprintf(stderr, "getting app parent folder failed: %s\n", strerror(ret));
                                }
                            } else {
                                fprintf(stderr, "making app path failed: %s\n", strerror(ret));
                            }
                        } else {
                            fprintf(stderr, "GetAppInfo() failed: %s\n", strerror(ret));
                        }
                    }
                    ~platform_specific()
                    {
                        for (int32 i = 0; i < agg::platform_support::max_images; i++)
                            delete fImages[i];
                        delete fApp;
                    }

    bool            Init(int width, int height, unsigned flags)
                    {
                        return fApp->Init(fAGG, width, height, fFormat, fFlipY, flags);
                    }

    int             Run()
                    {
                        status_t ret = B_NO_INIT;
                        if (fApp) {
                            fApp->Run();
                            ret = B_OK;
                        }
                        return ret;
                    }

    void            SetTitle(const char* title)
                    {
                        if (fApp && fApp->Window() && fApp->Window()->Lock()) {
                            fApp->Window()->SetTitle(title);
                            fApp->Window()->Unlock();
                        }
                    }
    void            StartTimer()
                    {
                        fTimerStart = system_time();
                    }
    double          ElapsedTime() const
                    {
                        return (system_time() - fTimerStart) / 1000.0;
                    }

    void            ForceRedraw()
                    {
                        fApp->Window()->View()->ForceRedraw();
                    }
    void            UpdateWindow()
                    {
                        fApp->Window()->View()->Update();
                    }


    agg::platform_support*  fAGG;
    AGGApplication*     fApp;
    agg::pix_format_e    fFormat;
    bool                fFlipY;
    bigtime_t           fTimerStart;
    BBitmap*            fImages[agg::platform_support::max_images];

    char                fAppPath[B_PATH_NAME_LENGTH];
    char                fFilePath[B_PATH_NAME_LENGTH];
};


    //------------------------------------------------------------------------
    platform_support::platform_support(pix_format_e format, bool flip_y) :
        m_specific(new platform_specific(this, format, flip_y)),
        m_format(format),
        m_bpp(32/*m_specific->m_bpp*/),
        m_window_flags(0),
        m_wait_mode(true),
        m_flip_y(flip_y),
        m_initial_width(10),
        m_initial_height(10)
    {
        strcpy(m_caption, "Anti-Grain Geometry Application");
    }


    //------------------------------------------------------------------------
    platform_support::~platform_support()
    {
        delete m_specific;
    }

    //------------------------------------------------------------------------
    void platform_support::caption(const char* cap)
    {
        strcpy(m_caption, cap);
        m_specific->SetTitle(cap);
    }

    //------------------------------------------------------------------------
    void platform_support::start_timer()
    {
        m_specific->StartTimer();
    }

    //------------------------------------------------------------------------
    double platform_support::elapsed_time() const
    {
        return m_specific->ElapsedTime();
    }

    //------------------------------------------------------------------------
    void* platform_support::raw_display_handler()
    {
        // TODO: if we ever support BDirectWindow here, that would
        // be the frame buffer pointer with offset to the window top left
        return NULL;
    }

    //------------------------------------------------------------------------
    void platform_support::message(const char* msg)
    {
        BAlert* alert = new BAlert("AGG Message", msg, "Ok");
        alert->Go(/*NULL*/);
    }


    //------------------------------------------------------------------------
    bool platform_support::init(unsigned width, unsigned height, unsigned flags)
    {
        m_initial_width = width;
        m_initial_height = height;
        m_window_flags = flags;

        if (m_specific->Init(width, height, flags)) {
            on_init();
            return true;
        }

        return false;
    }


    //------------------------------------------------------------------------
    int platform_support::run()
    {
        return m_specific->Run();
    }


    //------------------------------------------------------------------------
    const char* platform_support::img_ext() const { return ".ppm"; }


    const char* platform_support::full_file_name(const char* file_name)
    {
        sprintf(m_specific->fFilePath, "%s/%s", m_specific->fAppPath, file_name);
        return m_specific->fFilePath;
    }


    //------------------------------------------------------------------------
    bool platform_support::load_img(unsigned idx, const char* file)
    {
        if (idx < max_images)
        {
            char path[B_PATH_NAME_LENGTH];
            sprintf(path, "%s/%s%s", m_specific->fAppPath, file, img_ext());
            BBitmap* transBitmap = BTranslationUtils::GetBitmap(path);
            if (transBitmap && transBitmap->IsValid()) {
                if(transBitmap->ColorSpace() != B_RGB32 && transBitmap->ColorSpace() != B_RGBA32) {
                    // ups we got a smart ass Translator making our live harder
                    delete transBitmap;
                    return false;
                }

                color_space format = B_RGB24;

                switch (m_format) {
                    case pix_format_gray8:
                        format = B_GRAY8;
                        break;
                    case pix_format_rgb555:
                        format = B_RGB15;
                        break;
                    case pix_format_rgb565:
                        format = B_RGB16;
                        break;
                    case pix_format_rgb24:
                        format = B_RGB24_BIG;
                        break;
                    case pix_format_bgr24:
                        format = B_RGB24;
                        break;
                    case pix_format_abgr32:
                    case pix_format_argb32:
                    case pix_format_bgra32:
                        format = B_RGB32;
                        break;
                    case pix_format_rgba32:
                        format = B_RGB32_BIG;
                        break;
                }
                BBitmap* bitmap = new (nothrow) BBitmap(transBitmap->Bounds(), 0, format);
                if (!bitmap || !bitmap->IsValid()) {
                    fprintf(stderr, "failed to allocate temporary bitmap!\n");
                    delete transBitmap;
                    delete bitmap;
                    return false;
                }

                delete m_specific->fImages[idx];

                rendering_buffer rbuf_tmp;
                attach_buffer_to_BBitmap(rbuf_tmp, transBitmap, m_flip_y);
        
                m_specific->fImages[idx] = bitmap;
        
                attach_buffer_to_BBitmap(m_rbuf_img[idx], bitmap, m_flip_y);
        
                rendering_buffer* dst = &m_rbuf_img[idx];

                switch(m_format)
                {
                case pix_format_gray8:
                    return false;
//                  color_conv(dst, &rbuf_tmp, color_conv_bgra32_to_gray8()); break;
                    break;
        
                case pix_format_rgb555:
                    color_conv(dst, &rbuf_tmp, color_conv_bgra32_to_rgb555()); break;
                    break;
        
                case pix_format_rgb565:
                    color_conv(dst, &rbuf_tmp, color_conv_bgra32_to_rgb565()); break;
                    break;
        
                case pix_format_rgb24:
                    color_conv(dst, &rbuf_tmp, color_conv_bgra32_to_rgb24()); break;
                    break;
        
                case pix_format_bgr24:
                    color_conv(dst, &rbuf_tmp, color_conv_bgra32_to_bgr24()); break;
                    break;
        
                case pix_format_abgr32:
                    color_conv(dst, &rbuf_tmp, color_conv_bgra32_to_abgr32()); break;
                    break;
        
                case pix_format_argb32:
                    color_conv(dst, &rbuf_tmp, color_conv_bgra32_to_argb32()); break;
                    break;
        
                case pix_format_bgra32:
                    color_conv(dst, &rbuf_tmp, color_conv_bgra32_to_bgra32()); break;
                    break;
        
                case pix_format_rgba32:
                    color_conv(dst, &rbuf_tmp, color_conv_bgra32_to_rgba32()); break;
                    break;
                }
                delete transBitmap;
                
                return true;

            } else {
                fprintf(stderr, "failed to load bitmap: '%s'\n", full_file_name(file));
            }
        }
        return false;
    }



    //------------------------------------------------------------------------
    bool platform_support::save_img(unsigned idx, const char* file)
    {
        // TODO: implement using BTranslatorRoster and friends
        return false;
    }



    //------------------------------------------------------------------------
    bool platform_support::create_img(unsigned idx, unsigned width, unsigned height)
    {
        if(idx < max_images)
        {
            if(width  == 0) width  = m_specific->fApp->Window()->View()->Bitmap()->Bounds().IntegerWidth() + 1;
            if(height == 0) height = m_specific->fApp->Window()->View()->Bitmap()->Bounds().IntegerHeight() + 1;
            BBitmap* bitmap = new BBitmap(BRect(0.0, 0.0, width - 1, height - 1), 0, B_RGBA32);;
            if (bitmap && bitmap->IsValid()) {
                delete m_specific->fImages[idx];
                m_specific->fImages[idx] = bitmap;
                attach_buffer_to_BBitmap(m_rbuf_img[idx], bitmap, m_flip_y);
                return true;
            } else {
                delete bitmap;
            }
        }
        return false;
    }


    //------------------------------------------------------------------------
    void platform_support::force_redraw()
    {
        m_specific->ForceRedraw();
    }



    //------------------------------------------------------------------------
    void platform_support::update_window()
    {
        m_specific->UpdateWindow();
    }


    //------------------------------------------------------------------------
    void platform_support::on_init() {}
    void platform_support::on_resize(int sx, int sy) {}
    void platform_support::on_idle() {}
    void platform_support::on_mouse_move(int x, int y, unsigned flags) {}
    void platform_support::on_mouse_button_down(int x, int y, unsigned flags) {}
    void platform_support::on_mouse_button_up(int x, int y, unsigned flags) {}
    void platform_support::on_key(int x, int y, unsigned key, unsigned flags) {}
    void platform_support::on_ctrl_change() {}
    void platform_support::on_draw() {}
    void platform_support::on_post_draw(void* raw_handler) {}
}






//----------------------------------------------------------------------------
int agg_main(int argc, char* argv[]);



int
main(int argc, char* argv[])
{
    return agg_main(argc, argv);
}