overlay.py 文件源码

def draw_overlay(self, context, width, height):
        if self.scroll_enable and self.message:
            context = cairo_context_from_gi(context)

            #print str(width) + " x " + str(height)
            #context.scale(width, height)
            #context.scale(width / 100, height / 100)
            #context.scale(100, 100)
            #context.set_source_rgb(1, 0, 0)
            #context.paint_with_alpha(1)
            #context.select_font_face("Helvetica")
            #context.set_font_face(None)
            #context.set_font_size(0.05)
            #context.move_to(0.1, 0.1)
            #context.show_text("Hello World")
            #context.rectangle(0, height * 0.60, width, 30)
            #context.rectangle(0, 0.60, 1, 0.1)

            context.set_source_rgb(1, 0, 0)
            context.rectangle(0, 0.55 * height, width, 0.15 * height)
            context.fill()

            #context.scale(1.0 / width, 1.0 / height)
            #context.translate(0, height * 0.60)

            layout = PangoCairo.create_layout(context)
            #font = Pango.FontDescription("Arial " + str(0.090 * height))
            #font.set_family("Sans")
            #font.set_size(0.090 * height)
            #font.set_size(25)
            #font.set_stretch(Pango.Stretch.ULTRA_CONDENSED)
            font = Pango.font_description_from_string("Sans Condensed " + str(0.090 * height))
            layout.set_font_description(font)
            layout.set_text(self.message, -1)

            (layout_width, layout_height) = layout.get_pixel_size()
            self.scroll_wrap = 1.0 + (float(layout_width) / float(width))
            pos = (self.scroll_pos * width) - layout_width
            context.set_source_rgb(1, 1, 1)
            context.translate(pos, 0.55 * height)
            PangoCairo.update_layout(context, layout)
            PangoCairo.show_layout(context, layout)

            #context.set_line_width(0.1)
            #context.move_to(0, 0)
            #context.line_to(1, 0)
            #context.stroke()

        #pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size("/home/trans/Downloads/kitty.jpg", width, height)
        #Gdk.cairo_set_source_pixbuf(context, pixbuf, 0, 0)
        #context.stroke()