本文整理汇总了Python中goocanvas.Bounds方法的典型用法代码示例。如果您正苦于以下问题：Python goocanvas.Bounds方法的具体用法？Python goocanvas.Bounds怎么用？Python goocanvas.Bounds使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类goocanvas的用法示例。
在下文中一共展示了goocanvas.Bounds方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: _take_screenshot
# 需要导入模块: import goocanvas [as 别名]
# 或者: from goocanvas import Bounds [as 别名]
def _take_screenshot(self, dummy_button):
#print "Cheese!"
file_name = self._get_export_file_name()
if file_name is None:
return
# figure out the correct bounding box for what is visible on screen
x1 = self._scrolled_window.get_hadjustment().value
y1 = self._scrolled_window.get_vadjustment().value
x2 = x1 + self._scrolled_window.get_hadjustment().page_size
y2 = y1 + self._scrolled_window.get_vadjustment().page_size
bounds = goocanvas.Bounds()
bounds.x1, bounds.y1 = self.canvas.convert_from_pixels(x1, y1)
bounds.x2, bounds.y2 = self.canvas.convert_from_pixels(x2, y2)
dest_width = bounds.x2 - bounds.x1
dest_height = bounds.y2 - bounds.y1
#print bounds.x1, bounds.y1, " -> ", bounds.x2, bounds.y2
dummy, extension = os.path.splitext(file_name)
extension = extension.lower()
if extension == '.eps':
surface = cairo.PSSurface(file_name, dest_width, dest_height)
elif extension == '.pdf':
surface = cairo.PDFSurface(file_name, dest_width, dest_height)
elif extension == '.svg':
surface = cairo.SVGSurface(file_name, dest_width, dest_height)
else:
dialog = gtk.MessageDialog(parent = self.canvas.get_toplevel(),
flags = gtk.DIALOG_DESTROY_WITH_PARENT,
type = gtk.MESSAGE_ERROR,
buttons = gtk.BUTTONS_OK,
message_format = "Unknown extension '%s' (valid extensions are '.eps', '.svg', and '.pdf')"
% (extension,))
dialog.run()
dialog.destroy()
return
# draw the canvas to a printing context
cr = cairo.Context(surface)
cr.translate(-bounds.x1, -bounds.y1)
self.canvas.render(cr, bounds, self.zoom.value)
cr.show_page()
surface.finish()