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if not modules then modules = { } end modules ['lpdf-swf'] = {
version = 1.001,
comment = "companion to lpdf-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- The following code is based on tests by Luigi Scarso. His prototype
-- was using tex code. This is the official implementation.
local format, gsub = string.format, string.gsub
local backends, lpdf = backends, lpdf
local pdfconstant = lpdf.constant
local pdfboolean = lpdf.boolean
local pdfstring = lpdf.string
local pdfunicode = lpdf.unicode
local pdfdictionary = lpdf.dictionary
local pdfarray = lpdf.array
local pdfnull = lpdf.null
local pdfreference = lpdf.reference
local pdfflushobject = lpdf.flushobject
local checkedkey = lpdf.checkedkey
local codeinjections = backends.pdf.codeinjections
local nodeinjections = backends.pdf.nodeinjections
local pdfannotation_node = nodes.pool.pdfannotation
local activations = {
click = "XA",
page = "PO",
focus = "PV",
}
local deactivations = {
click = "XD",
page = "PI",
focus = "PC",
}
table.setmetatableindex(activations, function() return activations .click end)
table.setmetatableindex(deactivations,function() return deactivations.focus end)
local function insertswf(spec)
local width = spec.width
local height = spec.height
local filename = spec.foundname
local resources = spec.resources
local display = spec.display
local controls = spec.controls
local resources = resources and parametersets[resources]
local display = display and parametersets[display]
local controls = controls and parametersets[controls] -- not yet used
local preview = checkedkey(display,"preview","string")
local toolbar = checkedkey(display,"toolbar","boolean")
local embeddedreference = codeinjections.embedfile { file = filename }
local flash = pdfdictionary {
Subtype = pdfconstant("Flash"),
Instances = pdfarray {
pdfdictionary {
Asset = embeddedreference,
Params = pdfdictionary {
Binding = pdfconstant("Background") -- Foreground makes swf behave erratic
}
},
},
}
local flashreference = pdfreference(pdfflushobject(flash))
local configuration = pdfdictionary {
Configurations = pdfarray { flashreference },
Assets = pdfdictionary {
Names = pdfarray {
pdfstring(filename),
embeddedreference,
}
},
}
if resources then
local names = configuration.Assets.Names
local function add(filename)
local filename = gsub(filename,"%./","")
local embeddedreference = codeinjections.embedfile { file = filename, keepdir = true }
names[#names+1] = pdfstring(filename)
names[#names+1] = embeddedreference
end
local paths = resources.paths
if paths then
for i=1,#paths do
local files = dir.glob(paths[i] .. "/**")
for i=1,#files do
add(files[i])
end
end
end
local files = resources.files
if files then
for i=1,#files do
add(files[i])
end
end
end
local configurationreference = pdfreference(pdfflushobject(configuration))
local activation = pdfdictionary {
Type = pdfconstant("RichMediaActivation"),
Condition = pdfconstant(activations[display.open]),
Configuration = flashreference,
Animation = pdfdictionary {
Subtype = pdfconstant("Linear"),
Speed = 1,
Playcount = 1,
},
Presentation = pdfdictionary {
PassContextClick = false,
Style = pdfconstant("Embedded"),
Toolbar = toolbar,
NavigationPane = false,
Transparent = true,
Window = pdfdictionary {
Type = pdfconstant("RichMediaWindow"),
Width = pdfdictionary {
Default = 100,
Min = 100,
Max = 100,
},
Height = pdfdictionary {
Default = 100,
Min = 100,
Max = 100,
},
Position = pdfdictionary {
Type = pdfconstant("RichMediaPosition"),
HAlign = pdfconstant("Near"),
VAlign = pdfconstant("Near"),
HOffset = 0,
VOffset = 0,
}
}
},
-- View
-- Scripts
}
local deactivation = pdfdictionary {
Type = pdfconstant("RichMediaDeactivation"),
Condition = pdfconstant(deactivations[display.close]),
}
local richmediasettings = pdfdictionary {
Type = pdfconstant("RichMediaSettings"),
Activation = activation,
Deactivation = deactivation,
}
local settingsreference = pdfreference(pdfflushobject(richmediasettings))
local appearance
if preview then
local figure = codeinjections.getpreviewfigure { name = preview, width = width, height = height }
if figure then
local image = img.package(figure.status.private)
appearance = pdfdictionary { N = pdfreference(image.objnum) }
end
end
local annotation = pdfdictionary {
Subtype = pdfconstant("RichMedia"),
RichMediaContent = configurationreference,
RichMediaSettings = settingsreference,
AP = appearance,
}
return annotation, nil, nil
end
function backends.pdf.nodeinjections.insertswf(spec)
local annotation, preview, ref = insertswf {
foundname = spec.foundname,
width = spec.width,
height = spec.height,
display = spec.display,
controls = spec.controls,
resources = spec.resources,
-- factor = spec.factor,
-- label = spec.label,
}
node.write(pdfannotation_node(spec.width,spec.height,0,annotation()))
end
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