I tired read Datatypes documents and header files form NDK3.9. i looked they
say (in one header) DTA_Width is not correct now they say use intuition/gadgetclass.h instead. But nothing more means this i use GA_Width instead? same or height and all other datatype object?
Is this correct when we talk image files? sounds odd but i somehow understanded Datatype at least picturefiles used like Gadgets?...
and makes me think if evenaudio used such way means this tiny playing button grooup then if i draw stuff to WIndow ?

@Vanhapolle

Quote:

Vanhapolle wrote: I tired read Datatypes documents and header files form NDK3.9. i looked they say (in one header) DTA_Width is not correct now they say use intuition/gadgetclass.h instead. But nothing more means this i use GA_Width instead? same or height and all other datatype object? Is this correct when we talk image files? sounds odd but i somehow understanded Datatype at least picturefiles used like Gadgets?... and makes me think if evenaudio used such way means this tiny playing button grooup then if i draw stuff to WIndow ?

If you need insert datatype callings or even proprietary file descriptors loaders/savers in your software I think that you could ask people who already encontered these kind of problems.

Ask to people who realized Perfect Paint in Amikit (Perfectpaint uses datatypes) Showgirls on MorphOS (proprietary loaders) and Picshow (AmigaOS 3.x, Amikit)

_________________
"When the Amiga came out, everyone [at Apple] was scared as hell." (J.L. Gassée, former CEO of Apple France and chief of devs of Mac II-fx, interviewed by Amazing Computing, Nov 1996).

@Vanhapolle

Yes you should use GA_Width et al when laying out datatype for display in a window.

*BUT* you probably don;t want the datatype to render itself in the context you are most often discussing.

The folloing code is quite long and shows how I use adatatype to load an image into my own internal buffer.

struct SketchProject *DTLoadProject(STRPTR filename, struct SketchApp *skapp)
{

    Object *dto = NULL;
        struct SketchProject *newprj = NULL;
        struct SketchLayer   *newlay = NULL;

    dto  = IDataTypes->NewDTObject(filename,
                DTA_SourceType,DTST_FILE,
                DTA_GroupID,GID_PICTURE,
                PDTA_DestMode,PMODE_V43,
                TAG_DONE);

    if(dto)
    {
        struct pdtBlitPixelArray bpa;
        struct BitMapHeader *bmhd;
        UWORD w,h;
		STRPTR dtoname = NULL;
		IDataTypes->GetDTAttrs(dto,	DTA_ObjName, &dtoname, TAG_DONE);

        if(IDataTypes->GetDTAttrs(dto, PDTA_BitMapHeader, &bmhd, TAG_DONE))
        {

            w = bmhd->bmh_Width;
            h = bmhd->bmh_Height;
        

        if((newprj = NewProject(w,h,dtoname?dtoname:"DataTypesLoaded",skapp)))
        {
            if((newlay = NewLayer(w,h,0,0,"Background",0,newprj)))
            {
               	ARGB32 *tempbuffer = Allocmem(w * h * sizeof(ARGB32),MEMF_PRIVATE | MEMF_CLEAR);
            	if(tempbuffer)
	            	{
	                //IExec->AddHead((struct List *)&newprj->sp_Layers,(struct Node *)newlay);
	                if(bmhd->bmh_Masking == mskHasAlpha)
	                {
	                	newlay->sl_BufferHasAlpha = TRUE;
	                }

	                
	
	                bpa.MethodID = PDTM_READPIXELARRAY;
	
	                bpa.pbpa_PixelData = tempbuffer;
	                bpa.pbpa_PixelFormat = PBPAFMT_ARGB;
	                bpa.pbpa_PixelArrayMod = w * sizeof(ARGB32);
	                bpa.pbpa_Left = 0;
	                bpa.pbpa_Top = 0;
	                bpa.pbpa_Height = newlay->sl_Height;
	                bpa.pbpa_Width = newlay->sl_Width;
	
	                IIntuition->IDoMethodA(dto,(Msg)&bpa);
	                
				if(0)
				{
					newlay->sl_Buffer->sb_WriteRawData(newlay->sl_Buffer,0,0,newlay->sl_Width,newlay->sl_Height,newlay->sl_Width,(UBYTE *)tempbuffer);
				
				}
				else
				{	
					ARGB *row = Allocmem(sizeof(ARGB) * newlay->sl_Width,0);
					if(row)
					{
						int x,y;
						ARGB32 *q = tempbuffer;
						for(y = 0; y < newlay->sl_Height; y++)
						{
							for(x = 0; x < newlay->sl_Width; x++,q++)
							{
								ARGB32toARGB(row + x,q);
							}
							newlay->sl_Buffer->sb_PutPixels(newlay->sl_Buffer,y * newlay->sl_Width,newlay->sl_Width,row);
						}
						Freemem(row);
					}
				}
			
	                AddLayerToProject(newprj,newlay);
	                SetProjectActiveLayer(newprj,newlay);
					LayerOpenMagic(newlay);
					
					Freemem(tempbuffer);
				};            

             }
        }
        }
        IDataTypes->DisposeDTObject(dto);
    }
	if(newprj)
	{
	    MakeSketchWindowTitle(&newprj->sp_SW);
	}
    return newprj;
}

_________________
BroadBlues On Blues BroadBlues On Amiga Walker Broad

@broadblues

Broadblues thanks for your help to our new software developer.
I am not a programmer so I can't help more than giving suggestions and help people contatting each ones.

_________________
"When the Amiga came out, everyone [at Apple] was scared as hell." (J.L. Gassée, former CEO of Apple France and chief of devs of Mac II-fx, interviewed by Amazing Computing, Nov 1996).

New and new made some things for my personal use about 20years ago for Amiga before that for C64 but nothing useful what i coded itself i dont count non useful things. but now some amiga speffic problems are gone which means truecolor (showing pics non truecolour mode when data is truecolour is not so easy) and i very likely understanded how datatypes work. Saddly this forum dont accept some charters makes posting code very hard.

Last edited by Vanhapolle on 14-Dec-2014 at 08:08 PM.
Last edited by Vanhapolle on 14-Dec-2014 at 06:26 PM.
Last edited by Vanhapolle on 14-Dec-2014 at 06:26 PM.

@Vanhapolle

Are you sure Amigaworld dose not accept some international characters?

Well, you can posting code where all kinds of characters are accepted, and just link html where you upload that...

_________________
"When the Amiga came out, everyone [at Apple] was scared as hell." (J.L. Gassée, former CEO of Apple France and chief of devs of Mac II-fx, interviewed by Amazing Computing, Nov 1996).

@Raffaele

Link to text file outside forum you mean ? and these are some charters what c language uses. Now i must found place where i can post such files.

Last edited by Vanhapolle on 15-Dec-2014 at 03:01 PM.

@Vanhapolle

The main issue will > and < in c code as they are html characters too.

You can uses HTML character references to get arround that.

foo->bar

foo-&gt;bar

&gt; = >
&lt; = <

Sometimes though as in the code I posted above you can get lucky

also put

<pre>

...
....
</pre>


arround the code to preserve the tabbed layout for readability.

[edited]
to put the character references back in, as editing removes them....

Last edited by broadblues on 15-Dec-2014 at 07:53 PM.
Last edited by broadblues on 15-Dec-2014 at 07:52 PM.
Last edited by broadblues on 15-Dec-2014 at 03:31 PM.
Last edited by broadblues on 15-Dec-2014 at 03:31 PM.
Last edited by broadblues on 15-Dec-2014 at 03:28 PM.

_________________
BroadBlues On Blues BroadBlues On Amiga Walker Broad

@broadblues

What HTML references mean ? btw i try found place where i can post code and maybe even do my personal homepage for my projects.

@Vanhapolle

You can use f.e. http://pastebin.com/ to share your code.
It works with Amiga browsers like IBrowse, too.

@Channel_Z

Giant thanks for it. now i also think i understanded how datatypes saving work if so good thing.

Last edited by Vanhapolle on 15-Dec-2014 at 08:03 PM.

@Vanhapolle

There are also forums created specifically for AmigaOS programmers that do not have problems with < and > characters and also have fancy stuff like syntax coloring in posted source code:

http://os4coding.net/
http://www.amigacoding.de/

@salass00

yes but i cannot post OS4coding i registered which goed fine but i cannot post anything new threads to this forum maybe needs getting OS4 before this , seems at least unsuitable now for my needs. I try get soon energy finish my current project and then look datatypes saving. and maybe libpng etc saving also. Which seems not so hard. i mean datatypes saving. libpng what i allreasy know is very easy if lib complies fine. also libjpeg etc.

Last edited by Vanhapolle on 15-Dec-2014 at 11:20 PM.
Last edited by Vanhapolle on 15-Dec-2014 at 10:34 PM.