def scale_bitmap(self, img: wx.Image):
def get_new_size(_ow, _oh, _w, _h, on_w):
if on_w:
_nw = _ow - self.padding * 2
_nh = _nw * _h / _w
else:
_nh = _oh - self.padding * 2
_nw = _nh * _w / _h
return _nw, _nh
ow, oh = self.GetSize()
w, h = img.GetSize()
nw, nh = img.GetSize()
if w > h: # 横向图
if w > ow:
nw, nh = get_new_size(ow, oh, w, h, True)
if nh > oh:
nw, nh = get_new_size(ow, oh, w, h, False)
elif h > oh:
nw, nh = get_new_size(ow, oh, w, h, False)
if nw > ow:
nw, nh = get_new_size(ow, oh, w, h, True)
else: # 纵向图
if h > oh:
nw, nh = get_new_size(ow, oh, w, h, False)
if nw > ow:
nw, nh = get_new_size(ow, oh, w, h, True)
elif w > ow:
nw, nh = get_new_size(ow, oh, w, h, True)
if nh > oh:
nw, nh = get_new_size(ow, oh, w, h, False)
img = img.Scale(nw, nh, wx.IMAGE_QUALITY_HIGH)
bitmap = wx.BitmapFromImage(img)
return bitmap
def rescale_image(image: wx.Image, max_width: int, max_height: int):
"""
Rescale a wx.Image and return a wx.Bitmap.
"""
width, height = image.GetSize()
ratio = width / height
new_width = int(ratio * max_height)
new_height = int(max_width / ratio)
if new_width <= max_width:
image.Rescale(new_width, max_height, wx.IMAGE_QUALITY_HIGH)
else:
image.Rescale(max_width, new_height, wx.IMAGE_QUALITY_HIGH)
return wx.Bitmap(image)
def _get_ratio(image: wx.Image):
size = image.GetSize()
width_height = size[0] / size[1]
return width_height