mirror of
https://github.com/danbulant/node-x11
synced 2026-05-19 12:28:58 +00:00
569 lines
22 KiB
JavaScript
569 lines
22 KiB
JavaScript
var x11 = require('..');
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var xutil = require('../xutil');
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// adding XRender functions manually from
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// http://cgit.freedesktop.org/xcb/proto/tree/src/render.xml?id=HEAD
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// and http://www.x.org/releases/X11R7.6/doc/renderproto/renderproto.txt
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// TODO: move to templates
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exports.requireExt = function(display, callback)
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{
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var X = display.client;
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X.QueryExtension('RENDER', function(err, ext) {
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if (!ext.present)
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{
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return callback(new Error('extension not available'));
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}
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ext.QueryVersion = function(clientMaj, clientMin, callback)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSLL', [ext.majorOpcode, 0, 3, clientMaj, clientMin]);
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X.replies[X.seq_num] = [
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function(buf, opt) {
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var res = buf.unpack('LL');
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return res;
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},
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callback
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];
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X.pack_stream.flush();
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}
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ext.QueryPictFormat = function(callback)
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{
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X.seq_num++;
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X.pack_stream.pack('CCS', [ext.majorOpcode, 1, 1]);
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X.replies[X.seq_num] = [
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function (buf, opt) {
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var res = {};
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var res1 = buf.unpack('LLLLL');
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var num_formats = res1[0];
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var num_screens = res1[1];
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var num_depths = res1[2];
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var num_visuals = res1[3];
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var num_subpixel = res1[4];
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// formats list:
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var offset = 24;
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res.formats = [];
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for (var i=0; i < num_formats; ++i)
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{
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var format = {};
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var f = buf.unpack('LCCxxSSSSSSSSL', offset);
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res.formats.push(f);
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offset += 28;
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}
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return res;
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},
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callback
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];
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X.pack_stream.flush();
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}
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ext.QueryFilters = function(callback)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSL', [ext.majorOpcode, 29, 2, display.screen[0].root]);
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X.replies[X.seq_num] = [
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function(buf, opt) {
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var h = buf.unpack('LL');
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var num_aliases = h[0];
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var num_filters = h[1];
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var aliases = [];
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var offset = 24; // LL + 16 bytes pad
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for (var i=0; i < num_aliases; ++i)
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{
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aliases.push(buf.unpack('S', offset)[0]);
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offset+=2;
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}
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var filters = [];
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for (var i=0; i < num_filters; ++i)
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{
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var len = buf.unpack('C', offset)[0];
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//if (!len) break;
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offset++;
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filters.push(buf.toString('ascii', offset, offset+len));
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offset+=len;
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}
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return [aliases, filters];
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},
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callback
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];
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X.pack_stream.flush();
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}
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var valueList = [
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['repeat', 'Cxxx'],
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['alphaMap', 'L'],
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['alphaXOrigin', 'sxx'],
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['alphaYOrigin', 'sxx'],
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['clipXOrigin', 'sxx'],
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['clipYOrigin', 'sxx'],
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['clipMask', 'L'],
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['graphicsExposures', 'Cxxx'],
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['subwindowMode', 'Cxxx'],
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['polyEdge', 'Cxxx'],
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['polyMode', 'Cxxx'],
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['dither', 'L'],
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['componentAlpha', 'Cxxx']
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];
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var argumentLength = {
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C: 1,
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S: 2,
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s: 2,
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L: 4,
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x: 1
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};
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ext.CreatePicture = function(pid, drawable, pictformat, values)
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{
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X.seq_num++;
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var mask = 0;
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var reqLen = 5; // + (values + pad)/4
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var format = 'CCSLLLL';
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var params = [ext.majorOpcode, 4, reqLen, pid, drawable, pictformat, mask];
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if (values)
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{
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var valuesLength = 0;
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for (var i=0; i < valueList.length; ++i)
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{
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var name = valueList[i][0];
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var val = values[name];
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if (val) {
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mask |= (1 << i);
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params.push(val);
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var valueFormat = valueList[i][1];
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format += valueFormat;
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valuesLength += 4; //argumentLength[valueFormat];
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}
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}
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var pad4 = (valuesLength + 3) >> 2;
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var toPad = (pad4 << 2) - valuesLength;
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for (var i=0; i < toPad; ++i)
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format += 'x';
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reqLen += pad4;
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params[2] = reqLen;
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params[6] = mask;
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}
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X.pack_stream.pack(format, params);
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X.pack_stream.flush();
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}
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ext.FreePicture = function(pid) {
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X.seq_num++;
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X.pack_stream.pack('CCSL', [ext.majorOpcode, 7, 2, pid]);
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X.pack_stream.flush();
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}
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function floatToFix(f)
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{
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return parseInt(f*65536);
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}
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// see example of blur filter here: https://github.com/richoH/rxvt-unicode/blob/master/src/background.C
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// TODO: not ready yet.
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ext.SetPictureFilter = function(pid, name, filterParams)
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{
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X.seq_num++;
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var reqLen = 2; //header + params + 1xStopfix+2xColors
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var format = 'CCSLa';
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var params = [ext.majorOpcode, 30, reqLen, pid];
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/*
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if (name == 'convolution')
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{
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reqLen += 2;
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format += 'L';
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params.push(floatToFix(filterParams));
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} else {
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throw 'Not implemented filter ' + name;
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}
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*/
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params[2] = reqLen;
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X.pack_stream.pack(format, params);
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X.pack_stream.flush();
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};
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ext.CreateSolidFill = function(pid, r, g, b, a)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSLSSSS', [ext.majorOpcode, 33, 4, pid, floatToFix(r), floatToFix(g), floatToFix(b), floatToFix(a)]);
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X.pack_stream.flush();
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};
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ext.RadialGradient = function(pid, p1, p2, r1, r2, stops)
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{
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// TODO: merge with linear gradient
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X.seq_num++;
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var reqLen = 9+stops.length*3; //header + params + 1xStopfix+2xColors
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var format = 'CCSLLLLLLLL';
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var params = [ext.majorOpcode, 35, reqLen, pid];
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params.push(floatToFix(p1[0])); // L
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params.push(floatToFix(p1[1]));
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params.push(floatToFix(p2[0]));
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params.push(floatToFix(p2[1])); // L
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params.push(floatToFix(r1)); // L
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params.push(floatToFix(r2)); // L
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params.push(stops.length);
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// [ [float stopDist, [float r, g, b, a] ], ...]
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// stop distances
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for (var i=0; i < stops.length; ++i)
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{
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format += 'L';
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// TODO: we know total params length in advance. ? params[index] =
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params.push(floatToFix(stops[i][0]))
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}
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// colors
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for (var i=0; i < stops.length; ++i)
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{
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format += 'SSSS';
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for (var j=0; j < 4; ++j)
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params.push(stops[i][1][j]);
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}
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X.pack_stream.pack(format, params);
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X.pack_stream.flush();
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};
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ext.LinearGradient = function(pid, p1, p2, stops)
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{
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X.seq_num++;
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var reqLen = 7+stops.length*3; //header + params + 1xStopfix+2xColors
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var format = 'CCSLLLLLL';
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var params = [ext.majorOpcode, 34, reqLen, pid];
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params.push(floatToFix(p1[0])); // L
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params.push(floatToFix(p1[1]));
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params.push(floatToFix(p2[0]));
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params.push(floatToFix(p2[1])); // L
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params.push(stops.length);
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// [ [float stopDist, [float r, g, b, a] ], ...]
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// stop distances
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for (var i=0; i < stops.length; ++i)
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{
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format += 'L';
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// TODO: we know total params length in advance. ? params[index] =
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params.push(floatToFix(stops[i][0]))
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}
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// colors
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for (var i=0; i < stops.length; ++i)
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{
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format += 'SSSS';
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for (var j=0; j < 4; ++j)
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params.push(stops[i][1][j]);
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}
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X.pack_stream.pack(format, params);
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X.pack_stream.flush();
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}
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ext.ConicalGradient = function(pid, center, angle, stops)
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{
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X.seq_num++;
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var reqLen = 6+stops.length*3; //header + params + 1xStopfix+2xColors
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var format = 'CCSLLLLL';
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var params = [ext.majorOpcode, 36, reqLen, pid];
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params.push(floatToFix(center[0])); // L
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params.push(floatToFix(center[1]));
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params.push(floatToFix(angle)); // L
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params.push(stops.length);
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// [ [float stopDist, [float r, g, b, a] ], ...]
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// stop distances
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for (var i=0; i < stops.length; ++i)
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{
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format += 'L';
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// TODO: we know total params length in advance. ? params[index] =
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params.push(floatToFix(stops[i][0]))
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}
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// colors
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for (var i=0; i < stops.length; ++i)
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{
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format += 'SSSS';
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for (var j=0; j < 4; ++j)
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params.push(stops[i][1][j]);
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}
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X.pack_stream.pack(format, params);
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X.pack_stream.flush();
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}
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ext.FillRectangles = function(op, pid, color, rects)
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{
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X.seq_num++;
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var reqLen = 5+rects.length/2;
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var format = 'CCSCxxxLSSSS';
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var params = [ext.majorOpcode, 26, reqLen, op, pid];
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for (var j=0; j < 4; ++j)
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params.push(color[j]);
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for (var i=0; i < rects.length; i+=4)
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{
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format += 'ssSS';
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params.push(rects[i*4]);
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params.push(rects[i*4 + 1]);
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params.push(rects[i*4 + 2]);
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params.push(rects[i*4 + 3]);
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}
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X.pack_stream.pack(format, params);
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X.pack_stream.flush();
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}
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ext.Composite = function(op, src, mask, dst, srcX, srcY, maskX, maskY, dstX, dstY, width, height)
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{
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X.seq_num++;
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X.pack_stream.pack(
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'CCSCxxxLLLssssssSS',
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[ext.majorOpcode, 8, 9, op, src, mask, dst, srcX, srcY, maskX, maskY, dstX, dstY, width, height]
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)
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.flush();
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}
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ext.Trapezoids = function(op, src, srcX, srcY, dst, maskFormat, trapz)
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{
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X.seq_num++;
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var format = 'CCSCxxxLLLss';
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var params = [ext.majorOpcode, 10, 6+trapz.length, op, src, dst, maskFormat, srcX, srcY];
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for (var i=0; i < trapz.length; i+=10)
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{
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format += 'llllllllll';
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for (var j=0; j < 10; ++j)
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params.push(floatToFix(trapz[i*10 + j]));
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}
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X.pack_stream.pack(format, params);
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X.pack_stream.flush();
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}
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ext.Triangles = function(op, src, srcX, srcY, dst, maskFormat, tris)
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{
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X.seq_num++;
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var format = 'CCSCxxxLLLss';
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var params = [ext.majorOpcode, 11, 6+tris.length, op, src, dst, maskFormat, srcX, srcY];
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for (var i=0; i < tris.length; i+=6)
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{
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format += 'llllll';
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//TODO: Array.copy
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params.push(floatToFix(tris[i*6 + 0])); // x1
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params.push(floatToFix(tris[i*6 + 1])); // y1
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params.push(floatToFix(tris[i*6 + 2])); // x2
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params.push(floatToFix(tris[i*6 + 3])); // y2
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params.push(floatToFix(tris[i*6 + 4])); // x3
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params.push(floatToFix(tris[i*6 + 5])); // y3
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}
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X.pack_stream.pack(format, params);
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X.pack_stream.flush();
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}
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ext.CreateGlyphSet = function(gsid, format) {
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X.seq_num++;
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X.pack_stream.pack('CCSLL', [ext.majorOpcode, 17, 3, gsid, format]);
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X.pack_stream.flush();
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}
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ext.ReferenceGlyphSet = function(gsid, existing) {
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X.seq_num++;
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X.pack_stream.pack('CCSLL', [ext.majorOpcode, 18, 3, gsid, existing]);
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X.pack_stream.flush();
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}
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ext.FreeGlyphSet = function(gsid) {
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X.seq_num++;
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X.pack_stream.pack('CCSL', [ext.majorOpcode, 19, 2, gsid]);
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X.pack_stream.flush();
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}
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ext.AddGlyphs = function(gsid, glyphs) {
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X.seq_num++;
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var numGlyphs = glyphs.length;
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var imageBytes = 0;
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var glyphPaddedLength;
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var glyphLength;
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var stride;
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var glyph;
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for (var i = 0; i < numGlyphs; i++) {
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glyph = glyphs[i];
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if (glyph.width % 4 !== 0) {
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var stride = (glyph.width+3)&~3;
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var res = new Buffer(glyph.height*stride);
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res.fill(0);
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for (var y=0; y < glyph.height; ++y) {
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glyph.image.copy(res, y*stride, y*glyph.width, y*glyph.width + glyph.width);
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}
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glyph.image = res;
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glyph.width = stride;
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}
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glyphLength = glyphs[i].image.length;
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imageBytes += glyphLength;
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glyph.offX = glyph.offX / 64;
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glyph.offY = glyph.offY / 64;
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}
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var len = numGlyphs * 4 + imageBytes/4 + 3;
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// TODO: check length, use bigReq
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// X.pack_stream.pack('CCSLL', [ext.majorOpcode, 20, len, gsid, glyphs.length]);
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// BigReq: S + [ length ] replaced with SL + [ 0, length+1 ]
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X.pack_stream.pack('CCSLLL', [ext.majorOpcode, 20, 0, len+1, gsid, glyphs.length]);
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// glyph ids
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for (i = 0; i < numGlyphs; i++) {
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X.pack_stream.pack('L', [glyphs[i].id]);
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}
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// width + heiht + origin xy + advance xy
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for (i = 0; i < numGlyphs; i++) {
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X.pack_stream.pack('SSssss', [glyphs[i].width, glyphs[i].height, -glyphs[i].x, glyphs[i].y, glyphs[i].offX, glyphs[i].offY]);
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}
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// image
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for (i = 0; i < numGlyphs; i++) {
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X.pack_stream.write_queue.push(glyphs[i].image);
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}
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X.pack_stream.flush();
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}
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//AddGlyphsFromPicture, opcode=21 (not in spec)
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// FreeGlyps - opcode 22
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// gsid(L) , glyphs.length (L) + each glyph id (L)
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//
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// each GlyphEle:
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// 1 byte - number of glyphs
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// xxx
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// int16 deltax, deltay
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// + list of 8/16/32 byte indexesext.CompositeGlyphs
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// OR
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// 255 + 0 + 0 + glyphsetId / font:
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// CxxxssL, [255, 0, 0, glyphable]
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//
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// Each GlyphEle must be padded to 4 byte boundary
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//
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// glyphs as input:
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// [ "just string (0,0) offset is used", [ 10, 10, "string offseted 10,10 from previous pen position" ], 1234567 ] 1234567 is glypfset id or FONT
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// TODO: pre-process input so strings larger than 254 chars are supported
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// (split them into multiple entries with 0,0 offset)
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var formatFromBits = [,,,,,,,,'C',,,,,,,,'S',,,,,,,,,,,,,,,,'L'];
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var bufferWriteBits = [,,,,,,,,'writeUInt8',,,,,,,,'writeUInt16LE',,,,,,,,,,,,,,,,'writeUInt32LE'];
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// 8/16/32 bit string + 4-byte pad
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function wstring(bits, s) {
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var charLength = bits / 8;
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var dataLength = s.length*charLength;
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var res = new Buffer(xutil.padded_length(dataLength));
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debugger;
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var write = res[bufferWriteBits[bits]]
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res.fill(0);
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for(var i=0; i < s.length; i++)
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write.call(res, s.charCodeAt(i), i*charLength);
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return res;
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}
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var compositeGlyphsOpcodeFromBits = [,,,,,,,,23,,,,,,,,24,,,,,,,,,,,,,,,,25];
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ext.CompositeGlyphs = function(glyphBits, op, src, dst, maskFormat, gsid, srcX, srcY, glyphs)
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{
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var opcode = compositeGlyphsOpcodeFromBits[glyphBits];
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var charFormat = formatFromBits[glyphBits];
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var charLength = glyphBits / 8;
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X.seq_num++;
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var length = 7;
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var glyphs_length_split = [];
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for (var i=0; i < glyphs.length; ++i) {
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var g = glyphs[i];
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switch (typeof g) {
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case 'string':
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length += xutil.padded_length(g.length*charLength)/4 + 2;
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break;
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case 'object':
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length += xutil.padded_length(g[2].length*charLength)/4 + 2;
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break;
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case 'number': // glyphset id
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length += 3;
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break;
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}
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}
|
|
X.pack_stream.pack(
|
|
'CCSCxxxLLLLss',
|
|
[ext.majorOpcode, opcode, length, op, src, dst, maskFormat, gsid, srcX, srcY]
|
|
);
|
|
for (var i=0; i < glyphs.length; ++i) {
|
|
var g = glyphs[i];
|
|
switch (typeof g) {
|
|
case 'string':
|
|
X.pack_stream.pack('Cxxxssa', [g.length, 0, 0, wstring(glyphBits, g)]);
|
|
break;
|
|
case 'object': // array
|
|
X.pack_stream.pack('Cxxxssa', [g[2].length, g[0], g[1], wstring(glyphBits, g[2])]);
|
|
break;
|
|
case 'number': // glyphset id
|
|
X.pack_stream.pack('CxxxSSL', [0xff, 0, 0, g]);
|
|
break;
|
|
}
|
|
}
|
|
X.pack_stream.flush();
|
|
};
|
|
|
|
ext.CompositeGlyphs8 = function(op, src, dst, maskFormat, gsid, srcX, srcY, glyphs)
|
|
{
|
|
return ext.CompositeGlyphs(8, op, src, dst, maskFormat, gsid, srcX, srcY, glyphs);
|
|
};
|
|
|
|
ext.CompositeGlyphs16 = function(op, src, dst, maskFormat, gsid, srcX, srcY, glyphs)
|
|
{
|
|
return ext.CompositeGlyphs(16, op, src, dst, maskFormat, gsid, srcX, srcY, glyphs);
|
|
};
|
|
|
|
ext.CompositeGlyphs32 = function(op, src, dst, maskFormat, gsid, srcX, srcY, glyphs)
|
|
{
|
|
return ext.CompositeGlyphs(32, op, src, dst, maskFormat, gsid, srcX, srcY, glyphs);
|
|
};
|
|
|
|
// TODO: implement xutil-like code https://github.com/alexer/python-xlib-render/blob/master/xutil.py
|
|
|
|
// TODO: name format fields
|
|
// 0 - id
|
|
// 1 - type ( direct / ? /)
|
|
// 2 - depth
|
|
//
|
|
// 3 - red shift
|
|
// 4 - red mask
|
|
// 5 - green shift
|
|
// 6 - green mask
|
|
// 7 - blue shift
|
|
// 8 - blue mask
|
|
// 9 - alpha shift
|
|
// 10 - alpha mask
|
|
|
|
// 11 - colormap or none
|
|
|
|
ext.QueryPictFormat(function(err, formats) {
|
|
if (err)
|
|
return callback(err);
|
|
for (var i=0; i < formats.formats.length; ++i) {
|
|
var f = formats.formats[i];
|
|
if (f[2] == 1 && f[10] == 1)
|
|
ext.mono1 = f[0] ;
|
|
if (f[2] == 24 && f[3] == 16 && f[5] == 8 && f[7] == 0)
|
|
ext.rgb24 = f[0];
|
|
// 1, 32, 16, 255, 8, 255, 0, 255, 24, 255, 0
|
|
if (f[2] == 32 && f[3] == 16 && f[4] == 255 && f[5] == 8 && f[6] == 255 && f[7] == 0 && f[9] == 24)
|
|
ext.rgba32 = f[0] ;
|
|
if (f[2] == 8 && f[10] == 255)
|
|
ext.a8 = f[0];
|
|
}
|
|
callback(null, ext);
|
|
});
|
|
|
|
[
|
|
"PICTFORMAT argument does not name a defined PICTFORMAT",
|
|
"PICTURE argument does not name a defined PICTURE",
|
|
"PICTOP argument does not name a defined PICTOP",
|
|
"GLYPHSET argument does not name a defined GLYPHSET",
|
|
"GLYPH argument does not name a defined GLYPH in the glyphset"
|
|
].forEach(function(desc, code) {
|
|
X.errorParsers[ext.firstError + code] = function(err) {
|
|
err.message = "XRender: a value for a " + desc;
|
|
};
|
|
});
|
|
|
|
});
|
|
}
|