def resizeImageToFit(image: wx.Image, max_width, max_height):
r_w = max_width * 1.0 / image.GetWidth()
r_h = max_height * 1.0 / image.GetHeight()
r = min(r_w, r_h)
new_width = image.GetWidth() * r
new_height = image.GetHeight() * r
image.Rescale(new_width, new_height)
def convert_image(self):
if not os.path.exists(self.image_path):
return False
image = Image(self.image_path, wx.BITMAP_TYPE_PNG)
width = image.GetWidth() / 4
height = image.GetHeight() / 4
return image.Scale(width, height).ConvertToBitmap()
def wx_to_pil(img: wx.Image):
'''turn a WX bitmap into a PIL image one'''
#Make a new image setting the size
pil_img = Image.new('RGB', (img.GetWidth(), img.GetHeight()))
pil_img.frombytes(bytes(img.GetData())) #Copy the data into the new image
return pil_img #Return that new image
def scale_bitmap(self, image: wx.Image):
w = image.GetWidth()
h = image.GetHeight()
if w > h:
ratio = 512 / w
else:
ratio = 512 / h
image = image.Scale(int(w * ratio), int(h * ratio),
wx.IMAGE_QUALITY_HIGH)
result = wx.BitmapFromImage(image)
return result
class ImagePanel(ScrolledWindow):
MIN_SCROLL = 10
def __init__(self, parent):
ScrolledWindow.__init__(self, parent)
self.wx_image = None
self.original_bitmap = None
self.greyscaled_bitmap = None
self.img_path = None
sizer = BoxSizer(VERTICAL)
self.static_bitmap = StaticBitmap(self)
sizer.Add(self.static_bitmap, 1, flag=FLAG_ALL_AND_EXPAND)
self.SetSizer(sizer)
def was_image_loaded(self):
return (self.img_path and self.wx_image and self.original_bitmap
and self.greyscaled_bitmap)
def get_image_dimensions(self):
return (self.original_bitmap.GetWidth(),
self.original_bitmap.GetHeight())
def load_image(self, path, area=None):
self.Scroll(0, 0)
self.img_path = path
self.wx_image = Image(path, BITMAP_TYPE_ANY)
width = self.wx_image.GetWidth()
height = self.wx_image.GetHeight()
if area:
x, y, w, h = area
bitmap = Bitmap(self.wx_image)
bitmap_to_draw = bitmap.GetSubBitmap(Rect(x, y, w, h))
bitmap = bitmap.ConvertToImage().ConvertToGreyscale(
0.156, 0.308, 0.060).ConvertToBitmap()
self.original_bitmap = self._get_bitmap(bitmap, bitmap_to_draw, x,
y, w, h, False)
else:
self.original_bitmap = Bitmap(self.wx_image)
self.greyscaled_bitmap = self.original_bitmap.ConvertToImage(
).ConvertToGreyscale(0.209, 0.411, 0.080).ConvertToBitmap()
self.static_bitmap.SetBitmap(self.original_bitmap)
self.SetScrollbars(self.MIN_SCROLL, self.MIN_SCROLL,
width / self.MIN_SCROLL, height / self.MIN_SCROLL)
def _get_bitmap(self, bitmap, bitmap_to_draw, x, y, w, h, draw_frame=True):
bitmap = bitmap.GetSubBitmap(
Rect(0, 0, bitmap.GetWidth(), bitmap.GetHeight()))
dc = MemoryDC()
bdc = BufferedDC(dc)
bdc.SelectObject(bitmap)
bdc.DrawBitmap(bitmap_to_draw, x, y)
if draw_frame:
# Black rect to support white pages
bdc.SetPen(BLACK_PEN)
bdc.SetBrush(TRANSPARENT_BRUSH)
bdc.DrawRectangle(x, y, w, h)
# Grey rect to support black pages
bdc.SetPen(GREY_PEN)
bdc.SetBrush(TRANSPARENT_BRUSH)
bdc.DrawRectangle(x + 1, y + 1, w - 2, h - 2)
bdc.SelectObject(NullBitmap)
return bitmap
def image_ratio(self, image:wx.Image):
w = image.GetWidth()
h = image.GetHeight()
return w/h