107 lines
3.2 KiB
Haskell
107 lines
3.2 KiB
Haskell
import Diagram
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import Diagrams.Prelude
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import Diagrams.Backend.Cairo
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import Diagrams.Backend.Cairo.Internal
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import Graphics.UI.Gtk
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import Graphics.UI.Gtk.Windows.MessageDialog
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import System.Directory
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main :: IO ()
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main = do
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homedir <- getHomeDirectory
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-- init gui
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_ <- initGUI
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-- create window and widgets
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window <- windowNew
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da <- drawingAreaNew
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fileButton <- fileChooserButtonNew "Select mesh"
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FileChooserActionOpen
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drawButton <- buttonNew
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saveButton <- buttonNew
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quitButton <- buttonNew
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box1 <- vBoxNew False 0
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box2 <- hButtonBoxNew
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box3 <- hButtonBoxNew
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drawButtonLabel <- labelNew $ Just "Draw"
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saveButtonLabel <- labelNew $ Just "Save"
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quitButtonLabel <- labelNew $ Just "Quit"
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-- containers and boxing
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containerAdd drawButton drawButtonLabel
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containerAdd saveButton saveButtonLabel
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containerAdd quitButton quitButtonLabel
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containerAdd window box1
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boxPackStart box1 da PackGrow 0
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boxPackStart box1 box2 PackNatural 0
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boxPackStart box1 box3 PackNatural 0
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boxPackStart box2 drawButton PackNatural 0
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boxPackStart box2 saveButton PackNatural 0
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boxPackStart box2 quitButton PackNatural 0
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boxPackStart box3 fileButton PackNatural 0
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-- adjust properties
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set window [windowDefaultWidth := 700, windowDefaultHeight := 700,
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windowTitle := "Computergrafik"]
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set box2 [buttonBoxLayoutStyle := ButtonboxCenter]
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set box3 [buttonBoxLayoutStyle := ButtonboxCenter]
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_ <- windowSetTypeHint window WindowTypeHintDialog
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containerSetBorderWidth box2 10
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_ <- fileChooserSetCurrentFolder fileButton homedir
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-- callbacks
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_ <- onDestroy window mainQuit
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_ <- onClicked drawButton $ onClickedDrawButton fileButton
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da
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_ <- onClicked saveButton $ onClickedSaveButton fileButton
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_ <- onClicked quitButton mainQuit
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-- draw widgets and start main loop
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widgetShowAll window
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mainGUI
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onClickedDrawButton :: WidgetClass widget
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=> FileChooserButton
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-> widget
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-> IO ()
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onClickedDrawButton fcb da = do
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filename <- fileChooserGetFilename fcb
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case filename of
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Just x -> do
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mesh <- readFile x
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dw <- widgetGetDrawWindow da
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let (_, r) = renderDia Cairo
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(CairoOptions "" (Width 600) SVG False)
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(diagFromString mesh)
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renderWithDrawable dw r
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Nothing -> do
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showErrorDialog "No valid Mesh file!"
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onClickedSaveButton :: FileChooserButton
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-> IO ()
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onClickedSaveButton fcb = do
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filename <- fileChooserGetFilename fcb
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case filename of
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Just x -> do
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mesh <- readFile x
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let (png, _) = renderDia Cairo
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(CairoOptions "out.svg" (Width 600) SVG False)
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(diagFromString mesh)
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png
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Nothing -> do
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showErrorDialog "No valid Mesh file!"
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showErrorDialog :: String -> IO ()
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showErrorDialog str = do
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errorDialog <- messageDialogNew Nothing [DialogDestroyWithParent]
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MessageError
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ButtonsClose
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str
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_ <- dialogRun errorDialog
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widgetDestroy errorDialog
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