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-- Register all Toolbar actions and intialize all UI stuff
function initUi()
app.registerUi{["menu"] = "Fit page to layer", ["callback"] = "fit_to_layer"};
app.registerUi{["menu"] = "Fit page to selection", ["callback"] = "fit_to_selection"};
end
local function fit_to_layer_or_selection(type)
if type ~= "selection" and type ~= "layer" then
app.openDialog("Invalid type for fitting", {"Ok"}, "", true)
return
end
local strokes = app.getStrokes(type)
-- padd the whole region just a little bit. Might be a thing to configure in the future
local padding = {x=0, y=0}
-- search for the outermost strokes which span the rectangle of the to be moved area
-- take the stroke width, or if set the pressure, into account hereby
local mima = {minX=100000, maxX=0, minY=100000, maxY=0}
for _,stroke in ipairs(strokes) do
stroke.ref = nil
if stroke.pressure then
for i,x in ipairs(stroke.x) do
mima.maxX = math.max(mima.maxX, x + stroke.pressure[i]/2)
mima.minX = math.min(mima.minX, x - stroke.pressure[i]/2)
end
for i,y in ipairs(stroke.y) do
mima.maxY = math.max(mima.maxY, y + stroke.pressure[i]/2)
mima.minY = math.min(mima.minY, y - stroke.pressure[i]/2)
end
else
for _,x in ipairs(stroke.x) do
mima.maxX = math.max(mima.maxX, x + stroke.width/2)
mima.minX = math.min(mima.minX, x - stroke.width/2)
end
for _,y in ipairs(stroke.y) do
mima.maxY = math.max(mima.maxY, y + stroke.width/2)
mima.minY = math.min(mima.minY, y - stroke.width/2)
end
end
end
-- move strokes by minX and minY
for _,stroke in ipairs(strokes) do
for i,x in ipairs(stroke.x) do
stroke.x[i] = x - mima.minX + padding.x
end
for i,y in ipairs(stroke.y) do
stroke.y[i] = y - mima.minY + padding.y
end
end
-- make the current layer invisible and add the moved strokes to a new layer
app.setLayerVisibility(false)
app.activateAction("layer-new-above-current")
app.setCurrentLayerName("moved for fitting")
app.addStrokes{strokes=strokes}
app.setPageSize(mima.maxX-mima.minX+2*padding.x, mima.maxY-mima.minY+2*padding.y)
end
function fit_to_layer() fit_to_layer_or_selection("layer") end
function fit_to_selection() fit_to_layer_or_selection("selection") end
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