| Portability | portable (depends on GHC) |
|---|---|
| Stability | provisional |
| Maintainer | gtk2hs-users@lists.sourceforge.net |
| Safe Haskell | Safe-Infered |
Graphics.UI.Gtk.Printing.PrintContext
Contents
Description
Encapsulates context for drawing pages
- Module available since Gtk+ version 2.10
- data PrintContext
- class GObjectClass o => PrintContextClass o
- castToPrintContext :: GObjectClass obj => obj -> PrintContext
- toPrintContext :: PrintContextClass o => o -> PrintContext
- printContextGetCairoContext :: PrintContextClass self => self -> IO Cairo
- printContextSetCairoContext :: PrintContextClass self => self -> Cairo -> Double -> Double -> IO ()
- printContextGetPageSetup :: PrintContextClass self => self -> IO PageSetup
- printContextGetWidth :: PrintContextClass self => self -> IO Double
- printContextGetHeight :: PrintContextClass self => self -> IO Double
- printContextGetDpiX :: PrintContextClass self => self -> IO Double
- printContextGetDpiY :: PrintContextClass self => self -> IO Double
- printContextGetPangoFontmap :: PrintContextClass self => self -> IO FontMap
- printContextCreatePangoContext :: PrintContextClass self => self -> IO PangoContext
- printContextCreatePangoLayout :: PrintContextClass self => self -> IO PangoLayout
- printContextGetHardMargins :: PrintContextClass self => self -> IO (Maybe (Double, Double, Double, Double))
Detail
A PrintContext encapsulates context information that is required when
drawing pages for printing, such as the cairo context and important
parameters like page size and resolution. It also lets you easily create
PangoLayout and Context objects that match the font metrics of the cairo
surface.
PrintContext objects gets passed to the beginPrint, endPrint,
requestPageSetup and drawPage signals on the PrintOperation.
Printing support was added in Gtk+ 2.10.
Class Hierarchy
| GObject
| +----PrintContext
Types
data PrintContext Source
class GObjectClass o => PrintContextClass o Source
Instances
castToPrintContext :: GObjectClass obj => obj -> PrintContextSource
toPrintContext :: PrintContextClass o => o -> PrintContextSource
Methods
printContextGetCairoContextSource
Arguments
| :: PrintContextClass self | |
| => self | |
| -> IO Cairo | returns the cairo context of |
Obtains the cairo context that is associated with the PrintContext.
printContextSetCairoContextSource
Arguments
| :: PrintContextClass self | |
| => self | |
| -> Cairo |
|
| -> Double |
|
| -> Double |
|
| -> IO () |
Sets a new cairo context on a print context.
This function is intended to be used when implementing an internal print preview, it is not needed for printing, since Gtk+ itself creates a suitable cairo context in that case.
printContextGetPageSetupSource
Arguments
| :: PrintContextClass self | |
| => self | |
| -> IO PageSetup | returns the page setup of |
Obtains the PageSetup that determines the page dimensions of the
PrintContext.
Arguments
| :: PrintContextClass self | |
| => self | |
| -> IO Double | returns the width of |
Obtains the width of the PrintContext, in pixels.
Arguments
| :: PrintContextClass self | |
| => self | |
| -> IO Double | returns the height of |
Obtains the height of the PrintContext, in pixels.
Arguments
| :: PrintContextClass self | |
| => self | |
| -> IO Double | returns the horizontal resolution of |
Obtains the horizontal resolution of the PrintContext, in dots per
inch.
Arguments
| :: PrintContextClass self | |
| => self | |
| -> IO Double | returns the vertical resolution of |
Obtains the vertical resolution of the PrintContext, in dots per inch.
printContextGetPangoFontmapSource
Arguments
| :: PrintContextClass self | |
| => self | |
| -> IO FontMap | returns the font map of |
Returns a FontMap that is suitable for use with the PrintContext.
printContextCreatePangoContextSource
Arguments
| :: PrintContextClass self | |
| => self | |
| -> IO PangoContext | returns a new Pango context for |
Creates a new Context that can be used with the PrintContext.
printContextCreatePangoLayoutSource
Arguments
| :: PrintContextClass self | |
| => self | |
| -> IO PangoLayout | returns a new Pango layout for |
Creates a new PangoLayout that is suitable for use with the
PrintContext.