func RedrawWindow(W *XWindow, tweetsList []*TweetInfo, mouseClick [2]int) { var Attribs C.XWindowAttributes C.XGetWindowAttributes(W.Display, W.Window, &Attribs) // TODO -- Do this only when resizing? C.cairo_xlib_surface_set_size(W.Surface, Attribs.width, Attribs.height) C.cairo_set_source_rgb(W.Cairo, 0.1, 0.1, 0.1) C.cairo_paint(W.Cairo) var Rect C.PangoRectangle yPos := 10.0 + W.Scroll WindowWidth := Attribs.width maxTweetWidth := PixelsToPango(float64(WindowWidth - 5*UIPadding - UserImageSize)) for i := 0; i < len(tweetsList); i++ { t := tweetsList[i] C.pango_layout_set_width(t.Layout, maxTweetWidth) C.pango_layout_get_extents(t.Layout, nil, &Rect) // Get tweet text size _, ry, _, rh := PangoRectToPixels(&Rect) // Position and add padding ry += yPos if rh < UserImageSize+2*UIPadding-UIPadding { rh = UserImageSize + 2*UIPadding } else { rh += UIPadding } // Draw rectangle around tweet C.cairo_set_source_rgb(W.Cairo, 0.2, 0.2, 0.2) C.cairo_rectangle(W.Cairo, UIPadding, C.double(ry), C.double(WindowWidth-2*UIPadding), C.double(rh)) C.cairo_fill(W.Cairo) if mouseClick[0] >= UIPadding && float64(mouseClick[1]) >= ry && float64(mouseClick[1]) <= ry+rh { fmt.Println("Clicked tweet", t.Text) } // Draw user image userImage := GetCachedImage(W.UserImages, t.UserImage) if userImage == nil || C.cairo_surface_status(userImage) != C.CAIRO_STATUS_SUCCESS { userImage = placeholderImage } C.cairo_set_source_surface(W.Cairo, userImage, 2*UIPadding, C.double(yPos+UIPadding)) C.cairo_paint(W.Cairo) // Draw tweet text C.cairo_move_to(W.Cairo, 63, C.double(yPos+SmallPadding)) C.cairo_set_source_rgb(W.Cairo, 0.95, 0.95, 0.95) C.pango_cairo_show_layout(W.Cairo, t.Layout) yPos += 5 + rh } }
func (self *Surface) Paint() { C.cairo_paint(self.context) }
// Paint is a wrapper around cairo_paint(). func (v *Context) Paint() { C.cairo_paint(v.native()) }
//Paint paints the current source everywhere within the current clip region. // //originally cairo_paint. func (c *Context) Paint() *Context { C.cairo_paint(c.c) return c }