gtkPrintContextGetCairoContext(object)
gtkPrintContextSetCairoContext(object, cr, dpi.x, dpi.y)
gtkPrintContextGetPageSetup(object)
gtkPrintContextGetWidth(object)
gtkPrintContextGetHeight(object)
gtkPrintContextGetDpiX(object)
gtkPrintContextGetDpiY(object)
gtkPrintContextGetPangoFontmap(object)
gtkPrintContextCreatePangoContext(object)
gtkPrintContextCreatePangoLayout(object)
gtkPrintContextGetHardMargins(object)PangoLayout and PangoContext objects that match the font metrics
of the cairo surface.
GtkPrintContext objects gets passed to the ::begin-print, ::end-print,
::request-page-setup and ::draw-page signals on the GtkPrintOperation.
Using GtkPrintContext in a ::draw-page callback
draw_page <- function(operation, context, page_nr)
{
cr <- context$getCairoContext()# Draw a red rectangle, as wide as the paper (inside the margins) cr$setSourceRgb(1.0, 0, 0) cr$rectangle(0, 0, context$getWidth(), 50) cr$fill()
# Draw some lines cr$moveTo(20, 10) cr$lineTo(40, 20) cr$arc(60, 60, 20, 0, pi) cr$lineTo(80, 20) cr$setSourceRgb(0, 0, 0) cr$setLineWidth(5) cr$setLineCap("round") cr$setLineJoin("round") cr$stroke()
# Draw some text layout <- context$createLayout() layout$setText("Hello World! Printing is easy") desc <- pangoFontDescriptionFromString("sans 28") layout$setFontDescription(desc) cr$moveTo(30, 20) cr$layoutPath(layout)
# Font Outline cr$setSourceRgb(0.93, 1.0, 0.47) cr$setLineWidth(0.5) cr$strokePreserve()
# Font Fill cr$setSourceRgb(0, 0.0, 1.0) cr$fill() } Printing support was added in GTK+ 2.10.