Nothing
cairo <- cairoCreate
cairoFontFace <-
function(family, slant, weight)
{
if (!missing(family)) {
cairoToyFontFaceCreate(family, slant, weight)
}
else {
cairoUserFontFaceCreate()
}
}
cairoPattern <-
function(red, green, blue, alpha, surface, x0, y0, x1, y1, cx0, cy0, radius0, cx1, cy1, radius1)
{
if (!missing(red)) {
if (!missing(alpha)) {
cairoPatternCreateRgba(red, green, blue, alpha)
}
else {
cairoPatternCreateRgb(red, green, blue)
}
}
else {
if (!missing(surface)) {
cairoPatternCreateForSurface(surface)
}
else {
if (!missing(x0)) {
cairoPatternCreateLinear(x0, y0, x1, y1)
}
else {
cairoPatternCreateRadial(cx0, cy0, radius0, cx1, cy1, radius1)
}
}
}
}
cairoSurface <-
function(width, height, format, other, content, data, stride, filename, con)
{
if (!missing(other)) {
cairoSurfaceCreateSimilar(other, content, width, height)
}
else {
if (!missing(width)) {
if (!missing(data)) {
cairoImageSurfaceCreateForData(data, format, width, height, stride)
}
else {
cairoImageSurfaceCreate(format, width, height)
}
}
else {
if (!missing(filename)) {
cairoImageSurfaceCreateFromPng(filename)
}
else {
cairoImageSurfaceCreateFromPngStream(con)
}
}
}
}
cairoScaledFont <- cairoScaledFontCreate
cairoFontOptions <- cairoFontOptionsCreate
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