func (mw *MainWindow) drawStuff(surface *drawing.Surface, updateBounds drawing.Rectangle) os.Error {
bmp := createBitmap()
defer bmp.Dispose()
bounds, err := mw.paintWidget.ClientBounds()
panicIfErr(err)
rectPen, err := drawing.NewCosmeticPen(drawing.PenSolid, drawing.RGB(255, 0, 0))
panicIfErr(err)
defer rectPen.Dispose()
panicIfErr(surface.DrawRectangle(rectPen, bounds))
ellipseBrush, err := drawing.NewHatchBrush(drawing.RGB(0, 255, 0), drawing.HatchCross)
panicIfErr(err)
defer ellipseBrush.Dispose()
panicIfErr(surface.FillEllipse(ellipseBrush, bounds))
linesBrush, err := drawing.NewSolidColorBrush(drawing.RGB(0, 0, 255))
panicIfErr(err)
defer linesBrush.Dispose()
linesPen, err := drawing.NewGeometricPen(drawing.PenDash, 8, linesBrush)
panicIfErr(err)
defer linesPen.Dispose()
panicIfErr(surface.DrawLine(linesPen, drawing.Point{bounds.X, bounds.Y}, drawing.Point{bounds.Width, bounds.Height}))
panicIfErr(surface.DrawLine(linesPen, drawing.Point{bounds.X, bounds.Height}, drawing.Point{bounds.Width, bounds.Y}))
bmpSize := bmp.Size()
panicIfErr(surface.DrawImage(bmp, drawing.Point{bounds.Width/2 - bmpSize.Width/2, bounds.Height/2 - bmpSize.Height/2}))
return nil
}
func createBitmap() *drawing.Bitmap {
bounds := drawing.Rectangle{Width: 200, Height: 200}
bmp, err := drawing.NewBitmap(bounds.Size())
panicIfErr(err)
surface, err := drawing.NewSurfaceFromImage(bmp)
panicIfErr(err)
defer surface.Dispose()
brushBmp, err := drawing.NewBitmapFromFile("img/plus.png")
panicIfErr(err)
defer brushBmp.Dispose()
brush, err := drawing.NewBitmapBrush(brushBmp)
panicIfErr(err)
defer brush.Dispose()
panicIfErr(surface.FillRectangle(brush, bounds))
font, err := drawing.NewFont("Times New Roman", 40, drawing.FontBold|drawing.FontItalic)
panicIfErr(err)
defer font.Dispose()
panicIfErr(surface.DrawText("Runtime Created Bitmap", font, drawing.RGB(0, 0, 0), bounds, drawing.TextWordbreak))
return bmp
}
func main() {
runtime.LockOSThread()
doc := printing.NewDocument("Walk Printing Example")
defer doc.Dispose()
doc.InsertPageBreak()
text := "Lorem ipsum dolor sit amet, consectetur adipisici elit, sed eiusmod tempor incidunt ut labore et dolore magna aliqua."
font, err := drawing.NewFont("Times New Roman", 12, 0)
panicIfErr(err)
color := drawing.RGB(0, 0, 0)
preferredSize := drawing.Size{1000, 0}
format := drawing.TextWordbreak
for i := 0; i < 20; i++ {
panicIfErr(doc.AddText(fmt.Sprintf("%d) %s", i, text), font, color, preferredSize, format))
}
panicIfErr(doc.Print())
}