Class: RWin::Printer

Inherits:
Data
  • Object
show all
Defined in:
ext/rwin/rw_devices.c

Direct Known Subclasses

WR::Printer

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(v_device) ⇒ Object 



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# File 'ext/rwin/rw_devices.c', line 68

static VALUE
rwprinter_initialize(VALUE self, VALUE v_device){
    HGLOBAL hdevmode;
    DEVMODE *pdevmode;
    RwPrinter *rp = DATA_PTR(self);    
    RW_CALLOC(rp->devmode, sizeof(DEVMODE));
    switch(TYPE(v_device)){
      case T_FIXNUM: case T_BIGNUM:
	hdevmode = (HANDLE)NUM2HANDLE(v_device);
	if(pdevmode = GlobalLock(hdevmode)){
	    memcpy(rp->devmode, pdevmode, sizeof(DEVMODE));
	    GlobalUnlock(hdevmode);
	    break;
	} else {
	    rb_raise(rb_eArgError, "invalid handle (perhaps not of DEVMODE)");
	}
      case T_STRING:
	if(pdevmode = get_devmode_from_name(rw_str2tchar(v_device))){
	    memcpy(rp->devmode, pdevmode, sizeof(DEVMODE));
	    break;
	}
      case T_DATA:
	if(rb_typeddata_is_kind_of(v_device, &cstruct_data_type)){
	    CStructData *cs;
	    CStruct_Data_Get_Struct(v_device, cs);
	    if (cs->dtlen != sizeof(DEVMODE)){
		rb_raise(rb_eArgError, "Size of DEVMODE different: ecpected %d, but got %d",
			 (int)sizeof(DEVMODE), (int)cs->dtlen);
	    }
	    memcpy(rp->devmode, cs->dtstr+cs->dtoffset, cs->dtlen);
	    break;
	}
      default:
	rb_raise(rb_eArgError, "invalid device type:%s", RSTRING_PTR(rb_inspect(v_device)));
    }
    return self;
}

Class Method Details

.GetDefaultPrinter ⇒ Object

API functions



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# File 'ext/rwin/rw_devices.c', line 171

static VALUE
rwprinter1_getdefaultptr(){
    TCHAR *buff;
    DWORD cch;
    GetDefaultPrinter(NULL, &cch);
    buff = alloca(cch*sizeof(WCHAR));
    GetDefaultPrinter(buff, &cch);
    return rw_encode_external(buff);
}

Instance Method Details

#_devmode ⇒ Object 



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# File 'ext/rwin/rw_devices.c', line 181

static VALUE
rwprinter_getdevmode(VALUE self){
    RwPrinter *rp = DATA_PTR(self);
    if(rp->hdc) rb_raise(rb_eRuntimeError, "already printer opened, so can't retrieve devmode");
    if(!rp->devmode) rb_raise(rb_eRuntimeError, "devmode not established");
    return cstruct_wrapptr(ccsDEVMODE, (char*)rp->devmode, 0);
}

#_hdc ⇒ Object 



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# File 'ext/rwin/rw_devices.c', line 189

static VALUE
rwprinter_gethdc(VALUE self){
    RwPrinter *rp = DATA_PTR(self);
    return ULONG_PTR2NUM((ULONG_PTR)rp->hdc);
}

#close ⇒ Object 



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# File 'ext/rwin/rw_devices.c', line 124

static VALUE
rwprinter_close(VALUE self){
    RwPrinter *rp = DATA_PTR(self);
    if(rp->hdc){
	DeleteDC(rp->hdc);
	rp->hdc = 0;
    }
    return self;
}

#open ⇒ Object 



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# File 'ext/rwin/rw_devices.c', line 106

static VALUE
rwprinter_open(VALUE self){
    RwPrinter *rp = DATA_PTR(self);    
    if(!rp->hdc){
	rp->hdc = CreateDC(TEXT("WINSPOOL"), (TCHAR*)rp->devmode->dmDeviceName, NULL,
			   rp->devmode);
	if(!rp->hdc) rb_raise(rb_eRuntimeError, "failed to CreateDC");
    } else {
	rb_warn("Already printer was opend");
    }
    if(rb_block_given_p()){
	rb_yield(self);
	DeleteDC(rp->hdc);
	rp->hdc = 0;
    }
    return self;
}

#print(*args) ⇒ Object 



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# File 'ext/rwin/rw_devices.c', line 149

static VALUE
rwprinter_print(int argc, VALUE *argv, VALUE self){
    DOCINFO di;
    VALUE v_docname, klass, v_cv;
    RwPrinter *rp = DATA_PTR(self);
    rb_scan_args(argc, argv, "11", &v_docname, &klass);
    if(!rp->hdc) rb_raise(rb_eRuntimeError, "Printer not opened");
    if(!rb_block_given_p()) rb_raise(rb_eRuntimeError, "Need block");
    ZeroMemory(&di, sizeof(DOCINFO));
    di.cbSize = sizeof(DOCINFO);
    di.lpszDocName = rw_str2tchar(v_docname);
    v_cv = rwcvs_new_from_hdc(NIL_P(klass) ? cRwCanvas : klass, rp->hdc);
    rb_define_singleton_method(v_cv, "NextPage", v_cv1_nextpage, 0);
    rb_define_singleton_method(v_cv, "AbortDoc", v_cv1_abortdoc, 0);
    StartDoc(rp->hdc, &di);
    StartPage(rp->hdc);
    rb_yield(v_cv);
    EndPage(rp->hdc);
    EndDoc(rp->hdc);
    return self;
}