mirror of
https://github.com/danbulant/node-x11
synced 2026-06-16 21:21:20 +00:00
104 lines
3.1 KiB
JavaScript
104 lines
3.1 KiB
JavaScript
var valueMask = {
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backgroundPixmap: 0x00000001,
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backgroundPixel : 0x00000002,
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borderPixmap : 0x00000004,
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borderPixel : 0x00000008,
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bitGrawity : 0x00000010,
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winGravity : 0x00000020,
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backingStore : 0x00000040,
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backingPlanes : 0x00000080,
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backingPixel : 0x00000100,
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overrideRedirect: 0x00000200,
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saveUnder : 0x00000400,
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eventMask : 0x00000800,
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doNotPropagateMask: 0x00001000,
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colormap : 0x00002000,
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cursor : 0x00004000
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};
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var valueMaskNames = {};
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for (var m in valueMask) {
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valueMaskNames[valueMask[m]] = m;
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}
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/*
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the way requests are described here
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- outgoing request
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1) as function
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client.CreateWindow( params, params ) ->
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req = reqs.CreateWindow[0]( param, param );
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pack_stream.pack(req[0], req[1]);
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2) as array: [format, [opcode, request_length, additional known params]]
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client.MapWindow[0](id) ->
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req = reqs.MwpWindow;
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req[1].push(id);
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pack_stream.pack( req[0], req[1] );
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- reply
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*/
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module.exports = {
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CreateWindow: [
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// create request packet - function OR format string
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function(id, parentId, x, y, width, height, borderWidth, class, visual, values) {
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// TODO: ??? there is depth field in xproto, but xlib just sets it to zero
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var depth = 0;
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var packetLength = 8 + Object.keys(values).length;
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// TODO: should be CCSLLssSSSSLL - x,y are signed
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var format = 'CCSLLSSSSSSLL';
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// create bitmask
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var bitmask = 0;
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// TODO: slice from function arguments?
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var args = [1, depth, packetLength, id, parentId, x, y, width, height, borderWidth, class, visual];
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// TODO: the code is a little bit mess
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// additional values need to be packed in the following way:
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// bitmask (bytes #24 to #31 in the packet) - 32 bit indicating what adittional arguments we supply
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// values list (bytes #32 .. #32+4*num_values) in order of corresponding bits
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var masksList = [];
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for (var v in values)
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{
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var valueBit = valueMask[v];
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if (!valueBit)
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{
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throw new Error('CreateWindow: incorrect value param ' + v);
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}
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masksList.push(valueBit);
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bitmask |= valueBit;
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format += 'L';
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}
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// values packed in order of corresponding bit
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masksList.sort();
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// set bits to indicate additional values we are sending in this request
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args.push(bitmask);
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// add values in the order of the bits
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// TODO: maybe it's better just to scan all 32 bits anstead of sorting parameters we are actually have?
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for (m in masksList)
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{
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valueName = valueMaskNames[masksList[m]];
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args.push( values[valueName] );
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}
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return [format, args];
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}
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],
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MapWindow: [
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// 8 - opcode, 2 - length
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[ 'CxSL', [8, 2] ]
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],
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UnmapWindow: [
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[ 'CxSL', [10, 2] ]
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]
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}
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