func (mw *MainWindow) drawStuff(canvas *walk.Canvas, updateBounds walk.Rectangle) os.Error {
bmp := createBitmap()
defer bmp.Dispose()
bounds := mw.paintWidget.ClientBounds()
rectPen, _ := walk.NewCosmeticPen(walk.PenSolid, walk.RGB(255, 0, 0))
defer rectPen.Dispose()
canvas.DrawRectangle(rectPen, bounds)
ellipseBrush, _ := walk.NewHatchBrush(walk.RGB(0, 255, 0), walk.HatchCross)
defer ellipseBrush.Dispose()
canvas.FillEllipse(ellipseBrush, bounds)
linesBrush, _ := walk.NewSolidColorBrush(walk.RGB(0, 0, 255))
defer linesBrush.Dispose()
linesPen, _ := walk.NewGeometricPen(walk.PenDash, 8, linesBrush)
defer linesPen.Dispose()
canvas.DrawLine(linesPen, walk.Point{bounds.X, bounds.Y}, walk.Point{bounds.Width, bounds.Height})
canvas.DrawLine(linesPen, walk.Point{bounds.X, bounds.Height}, walk.Point{bounds.Width, bounds.Y})
bmpSize := bmp.Size()
canvas.DrawImage(bmp, walk.Point{(bounds.Width - bmpSize.Width) / 2, (bounds.Height - bmpSize.Height) / 2})
return nil
}
func createBitmap() *walk.Bitmap {
bounds := walk.Rectangle{Width: 200, Height: 200}
bmp, _ := walk.NewBitmap(bounds.Size())
succeeded := false
defer func() {
if !succeeded {
bmp.Dispose()
}
}()
canvas, _ := walk.NewCanvasFromImage(bmp)
defer canvas.Dispose()
brushBmp, _ := walk.NewBitmapFromFile("../img/plus.png")
defer brushBmp.Dispose()
brush, _ := walk.NewBitmapBrush(brushBmp)
defer brush.Dispose()
canvas.FillRectangle(brush, bounds)
font, _ := walk.NewFont("Times New Roman", 40, walk.FontBold|walk.FontItalic)
defer font.Dispose()
canvas.DrawText("Walk Drawing Example", font, walk.RGB(0, 0, 0), bounds, walk.TextWordbreak)
succeeded = true
return bmp
}
func main() {
walk.Initialize(walk.InitParams{PanicOnError: true})
defer walk.Shutdown()
doc := walk.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, _ := walk.NewFont("Times New Roman", 12, 0)
color := walk.RGB(0, 0, 0)
preferredSize := walk.Size{1000, 0}
format := walk.TextWordbreak
for i := 0; i < 20; i++ {
doc.AddText(fmt.Sprintf("%d) %s", i, text), font, color, preferredSize, format)
}
doc.Print()
}