def clear_cos_connection_error(self, msg=""):
self.clear()
self.error_msg = PLANTUML_VIEW_INTERNET_FAIL % msg
# print(plant_uml_create_png_and_return_image_url.cache_info())
plant_uml_create_png_and_return_image_url_async.cache_clear()
url_to_data.cache_clear()
self.Refresh()
async def ViewImage(self, thefile="", url=""):
"""Loads url or file and sets .bmp and .bmp_transparent_ori, the img is discarded"""
self.error_msg = None
if thefile:
img = wx.Image(thefile, wx.BITMAP_TYPE_ANY)
bmp = wx.Bitmap(img) # ANDY added 2019
elif url:
# print(url_to_data.cache_info())
try:
data, status = await url_to_data(url)
log.info(f"(2nd, image grabbing) Response from plant_uml_server status_code {status}")
except asyncio.TimeoutError as e: # there is no string repr of this exception
self.clear_cos_connection_error(msg="(timeout)")
url_to_data.cache_clear() # so if retry you won't get the same error
log.error("TimeoutError getting plantuml IMAGE")
return
if status != 200:
self.clear_cos_connection_error(msg=f"(bad response {status})")
log.error(f"Error getting plantuml IMAGE, (bad response {status})")
return
stream = io.BytesIO(data)
img = wx.Image(stream)
bmp = wx.Bitmap(img)
# try:
# bmp = img.ConvertToBitmap()
# except Exception as e:
# print(e)
# return
self.maxWidth, self.maxHeight = bmp.GetWidth(), bmp.GetHeight()
self.maxHeight += BMP_EXTRA_MARGIN # stop bitmaps getting slightly clipped
# dbg(bmp)
# ANDY bmp.HasAlpha() does not work, since wx.Image has this method but wx.Bitmap
# does not. But Bitmaps have some alpha channel concepts in them too...?
# Render bmp to a second white bmp to remove transparency effects
# if False and bmp.HasAlpha():
if img.HasAlpha():
self.bmp_transparent_ori = bmp
bmp2 = wx.Bitmap(bmp.GetWidth(), bmp.GetHeight())
dc = wx.MemoryDC()
dc.SelectObject(bmp2)
dc.Clear()
dc.DrawBitmap(bmp, 0, 0, True)
dc.SelectObject(wx.NullBitmap)
self.bmp = bmp2
else:
self.bmp_transparent_ori = None
self.bmp = bmp
def user_aborted(self):
self.error_msg = PLANTUML_VIEW_USER_ABORT
plant_uml_create_png_and_return_image_url_async.cache_clear()
url_to_data.cache_clear()
self.Refresh()