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Annotation of 43BSD/contrib/X/CLUlib/sun/x_bitmap.clu, revision 1.1.1.1

1.1       root        1: % Copyright    Barbara Liskov    1985, 1986
                      2: 
                      3: x_bitmap = cluster is none, create, screate, destroy, c2b, get_id,
                      4:                      equal, similar, copy
                      5: 
                      6: rep = int
                      7: 
                      8: none = proc () returns (cvt)
                      9:     return(0)
                     10:     end none
                     11: 
                     12: create = proc (width, height: int, bits: _wordvec) returns (cvt)
                     13:           signals (error(string))
                     14:     x_buf$setup(x_storebitmap, 0, 0, 0)
                     15:     x_buf$set_s01(height, width)
                     16:     x_buf$send_data(w2b(bits), 1, ((width + 15) / 16) * height * 2)
                     17:     x_buf$receive()
                     18:        resignal error
                     19:     return(x_buf$get_lp0())
                     20:     end create
                     21: 
                     22: screate = proc (width, height: int, bits: string) returns (x_bitmap)
                     23:            signals (error(string))
                     24:     bts: _bytevec := _bytevec$create(string$size(bits))
                     25:     for i: int in int$from_to_by(1, string$size(bits), 2) do
                     26:        bts[i] := bits[i + 1]
                     27:        bts[i + 1] := bits[i]
                     28:        end
                     29:     return(create(width, height, b2w(bts)))
                     30:        resignal error
                     31:     end screate
                     32: 
                     33: destroy = proc (bit: cvt)
                     34:     x_buf$setup(x_freebitmap, 0, 0, 0)
                     35:     x_buf$set_l0(bit)
                     36:     end destroy
                     37: 
                     38: c2b = proc (font: x_font, c: char) returns (cvt) signals (error(string))
                     39:     x_buf$setup(x_charbitmap, 0, 0, 0)
                     40:     x_buf$set_l0s23(f2i(font), char$c2i(c), 0)
                     41:     x_buf$receive()
                     42:        resignal error
                     43:     return(x_buf$get_lp0())
                     44:     end c2b
                     45: 
                     46: get_id = proc (bit: cvt) returns (int)
                     47:     return(bit)
                     48:     end get_id
                     49: 
                     50: equal = proc (bit1, bit2: cvt) returns (bool)
                     51:     return(bit1 = bit2)
                     52:     end equal
                     53: 
                     54: similar = proc (bit1, bit2: cvt) returns (bool)
                     55:     return(bit1 = bit2)
                     56:     end similar
                     57: 
                     58: copy = proc (bit: cvt) returns (cvt)
                     59:     return(bit)
                     60:     end copy
                     61: 
                     62: end x_bitmap

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