/* Ilbm.library C application: cc +p ShowPic.c as -cd FileInterface.asm as -cd IlbmInterface.asm ln -o ShowPic ShowPic.o FileInterface.o IlbmInterface.o -lc32 */ #include "math.h" #include "functions.h" /* Manx C declarations */ #include "intuition/intuition.h" #include "exec/tasks.h" #include "exec/types.h" #include "exec/memory.h" #include "graphics/gfxbase.h" #include "graphics/rastport.h" #include "graphics/gfx.h" #include "graphics/view.h" #include "graphics/text.h" #include "intuition/intuitionbase.h" /* These INCLUDE files come with the ilbm and requester libs */ #include "ILBM_Lib.h" #include "FileIO.h" /*-------------------------------defines---------------------------------*/ #define INTUITION_REV 33L #define GRAPHICS_REV 33L #define DEPTH 4 struct IntuitionBase *IntuitionBase=0L; struct GfxBase *GfxBase=0L; struct Window *back_wind=0L; struct Screen *main_scrn=0L; /* Data for the Dissidents Requester library */ struct RequesterBase *RequesterBase=0L; struct FileIO *myFileIO=0L; /* Data for the Dissidents ILBM library */ struct ILBMBase *ILBMBase=0L; ILBMFrame myILBMFrame; struct TextAttr my_font_attr={(UBYTE *)"topaz.font",TOPAZ_EIGHTY,\ FS_NORMAL, FPF_ROMFONT}; struct NewScreen ns={0,0,640,200, DEPTH, 0,1, HIRES, SCREENBEHIND | CUSTOMSCREEN, &my_font_attr, (UBYTE *)"Screen", NULL, NULL }; struct NewWindow b_nw={0,0,640,200, -1,-1, GADGETDOWN | RAWKEY |\ GADGETUP | MENUPICK | MOUSEMOVE, SMART_REFRESH | ACTIVATE | BACKDROP |\ WINDOWDEPTH | REPORTMOUSE | BORDERLESS, NULL, NULL, (UBYTE *)"Background Window", NULL,NULL, 640,200,640,200, CUSTOMSCREEN}; VOID open_all(), damp_mop(); /*------------------------------start of main()----------------------------*/ main( argc, argv ) LONG argc; UBYTE *argv[]; { UBYTE *string; IFFP Result; struct IntuiMessage *mes; ULONG secs=250; /* Display for 5 secs */ /* We expect at least the filename for the first arg. Optionally, any additional arg is perceived as a flag to trigger resaving the picture as it appears in this window. */ if( argc > 3 || argc < 2 ) { printf("USAGE: ShowPic filename [resave]\n"); exit(); } open_all(); /* The FileIO is for the file requester lib. See Fish Disc #203 for the documentation and examples */ if( (myFileIO = GetFileIO()) == NULL) damp_mop(); myFileIO->X = 6; myFileIO->Y = 11; myFileIO->DrawMode = JAM2; myFileIO->PenA = 0; myFileIO->PenB = 1; /* We can open our own window/screen and load pictures there by setting the ILBMFrame's iWindow and iScreen fields to this address. Any pic that is larger than our window/screen dimensions will be scaled to fit. Also, any picture intended for a different view mode than our screen (or with more colors) may come out "weird". The main advantage of loading into an open window is that we are certain what dimensions the screen/window will be. If you had a program which loaded a company logo in an IFF ILBM FORM when it started, you would certainly make sure that the ILBM file was the proper dimensions for your opened screen. In a dissidents product, SpeakerSim, there is a feature for loading in an ILBM beneath the speaker plot graph. Since the mouse coordinates figure prominantly in obtaining info from the user, it would have been too much overhead to tailor all functions to work in both HIRES, LORES, and INTERLACE simultaneously. So, there are several "versions" of SpeakerSim, each one's graphing routines optimized for the dimensions of the main screen. Since the ILBM is meant to be a low-key, background beneath the speaker plot, the picture is scaled to fit. Obviously, its best to load an ILBM that fits that version of SpeakerSim, but the em- phasis is on the graphing, not the background. This is an example of why you might load into an existing window. Otherwise, we could have the lib open an appropriately sized backdrop window/screen by setting iWindow and iScreen to 0. In this case, the lib will place the addresses in the ILBMFrame fields. We could then do a ModifyIDCMP after the load. Eventually, we'll have to CloseWindow and CloseScreen. With this method, the image is never scaled (currently the lib doesn't allow for overscan images) as long the pic's BMHD w=pageWidth and h=pageHeight, and the image is a standard amiga screen dimension. Unfortunately, you won't know whether you have a HAM, LORES, HIRES, etc until after the load. Both options are shown here. First the picture is loaded into a 640 by 200, HIRES screen with 4 bitplanes. If you load a LORES pic it will scale to fill the screen. If that pic has > 16 colors, some colors may not look right. If you load a pic with > 4 planes, it may also look weird. If you load a 640by200 pic with 4 planes, it will look just right. Next the window/screen is closed, and the picture is reloaded with the lib opening a window/screen for us. No scaling. Lastly, if you supplied a 2nd arg on the CLI line, it will simply resave the picture. This is just for the sake of demonstration. */ if((main_scrn=(struct Screen *)OpenScreen(&ns)) == NULL) damp_mop(); b_nw.Screen=main_scrn; if((back_wind=(struct Window *)OpenWindow(&b_nw)) == NULL) damp_mop(); ScreenToFront(main_scrn); myILBMFrame.iScreen = main_scrn; myILBMFrame.iWindow = back_wind; myILBMFrame.iUserFlags = 3; /* no pointer, and hidden title bar */ Result=LoadIFFToWindow( argv[1], &myILBMFrame ); if( !Result ) Delay( secs ); else { /* Get the IFFP error message and display it in a auto requester */ string=GetIFFPMsg( Result ); AutoMessage( string, back_wind ); } if(back_wind) { /* drain the IDCMP */ while( mes=(struct IntuiMessage *)GetMsg(back_wind->UserPort)) ReplyMsg(mes); CloseWindow( back_wind ); back_wind=0; } if( main_scrn ) CloseScreen( main_scrn ); main_scrn=0; /* Now the lib opens the window for us */ myILBMFrame.iScreen = 0; myILBMFrame.iWindow = 0; myILBMFrame.iUserFlags = 3; /* no pointer, and hidden title bar */ Result=LoadIFFToWindow( argv[1], &myILBMFrame ); if( !Result ) { Delay( secs ); main_scrn=myILBMFrame.iScreen; back_wind=myILBMFrame.iWindow; } else { /* Get the IFFP error message and display it in a auto requester */ string=GetIFFPMsg( Result ); AutoMessage( string, back_wind ); } if( argv[2] ) { if( SaveWindowToIFF( argv[1], back_wind )) AutoMessage("Save OK", back_wind ); else AutoMessage("Save error", back_wind ); } damp_mop(); } /* end of main() */ /*---------opens Intuition, graphics, requester, and ilbm libs--------*/ VOID open_all() { if( (IntuitionBase=(struct IntuitionBase *)OpenLibrary("intuition.library", INTUITION_REV)) == NULL ) damp_mop(); if( (GfxBase=(struct GfxBase *)OpenLibrary("graphics.library", GRAPHICS_REV)) == NULL ) damp_mop(); if( (RequesterBase=(struct RequesterBase *)OpenLibrary("requester.library", 0L)) == NULL ) { printf("Need the dissidents requester.library on boot disk\n"); damp_mop(); } if( (ILBMBase=(struct ILBMBase *)OpenLibrary("ilbm.library", 0L)) == NULL ) { printf("Need the dissidents ilbm.library on boot disk\n"); damp_mop(); } } /*---------------closes windows, screen, libs---------------*/ VOID damp_mop() { struct IntuiMessage *mes; if( RequesterBase ) { ReleaseFileIO( myFileIO ); /* ReleaseFileIO checks for myFileIO==NULL */ } if(back_wind) { /* drain the IDCMP */ while( mes=(struct IntuiMessage *)GetMsg(back_wind->UserPort)) ReplyMsg(mes); ClearMenuStrip( back_wind ); CloseWindow( back_wind ); } if( main_scrn ) CloseScreen( main_scrn ); if( ILBMBase ) CloseLibrary( ILBMBase ); if( RequesterBase ) CloseLibrary( RequesterBase ); if( GfxBase ) CloseLibrary( GfxBase ); if( IntuitionBase ) CloseLibrary( IntuitionBase ); exit(FALSE); }