def __drawPictureThumbnail(self):
# load original image
origImage = Bitmap.FromFile(self.filename, False)
# calculate
size = ThumbnailSize
if self.__dims is None:
self.__dims = (origImage.Width, origImage.Height)
width, height = self.CalcResizedDims(size)
drawWidth, drawHeight = width, height
width, height = max(width, size), max(height, size)
drawXOffset, drawYOffset = (width - drawWidth) / 2, (height -
drawHeight) / 2
# draw new image
newImage = Bitmap(width, height)
g = Graphics.FromImage(newImage)
g.InterpolationMode = InterpolationMode.HighQualityBicubic
g.FillRectangle(Brushes.GhostWhite, 0, 0, width, height)
g.DrawRectangle(Pens.LightGray, 0, 0, width - 1, height - 1)
g.DrawImage(origImage, drawXOffset, drawYOffset, drawWidth, drawHeight)
imageBytes = BitmapToBytes(newImage)
# cleanup
g.Dispose()
newImage.Dispose()
origImage.Dispose()
return imageBytes
class Image(object):
ImageEncoders = dict([(i.MimeType, i)
for i in ImageCodecInfo.GetImageEncoders()])
@staticmethod
def ImageFromZip(zipFile, file):
if ZipFile is None:
raise Exception(
"'Ionic.Zip.dll' not found! ZipFile not supported!")
z = ZipFile(zipFile)
m = MemoryStream()
e = z[file]
e.Extract(m)
return Image(m)
def __init__(self, file):
self._file = file
self._bitmap = Bitmap(file)
@property
def width(self):
return self._bitmap.Width
@property
def height(self):
return self._bitmap.Height
def resize(self, width, height):
rImg = Bitmap(width, height)
g = Graphics.FromImage(rImg)
g.InterpolationMode = HighQualityBicubic
g.DrawImage(self._bitmap, 0, 0, width, height)
g.Dispose()
self._bitmap.Dispose()
self._bitmap = rImg
def crop(self, left=0, top=0, right=0, bottom=0):
width = self._bitmap.Width - right
height = self._bitmap.Height - bottom
r = Rectangle(left, top, width, height)
try:
cropImage = self._bitmap.Clone(r, self._bitmap.PixelFormat)
except:
print "retrying rectangle=%s" % str(r)
self.resize(self._bitmap.Width + 10, self._bitmap.Height + 10)
try:
cropImage = self._bitmap.Clone(r, self._bitmap.PixelFormat)
except Exception, e:
print "Error in crop: %s" % str(e)
return
self._bitmap.Dispose()
self._bitmap = cropImage
def DrawResizedImage(self, size):
# load original image
origImage = Bitmap.FromFile(self.filename, False)
# calculate
if self.__dims is None: self.__dims = (origImage.Width, origImage.Height)
width, height = self.CalcResizedDims(size)
# draw new image
newImage = Bitmap(width, height)
g = Graphics.FromImage(newImage)
g.InterpolationMode = InterpolationMode.HighQualityBicubic
g.DrawImage(origImage, 0, 0, width, height)
imageBytes = BitmapToBytes(newImage)
# cleanup
g.Dispose()
newImage.Dispose()
origImage.Dispose()
return imageBytes
def __drawFolderThumbnail(self, parent):
size = ThumbnailSize
# create new image
newImage = Bitmap(size, size)
g = Graphics.FromImage(newImage)
g.InterpolationMode = InterpolationMode.HighQualityBicubic
# draw background
if parent: bc = ParentFolderColor
else: bc = ChildFolderColor
b = LinearGradientBrush(Point(0, 0), Point(size, size), bc,
Color.GhostWhite)
g.FillRectangle(b, 0, 0, size, size)
b.Dispose()
g.DrawRectangle(Pens.LightGray, 0, 0, size - 1, size - 1)
# draw up to 4 subitems
folderItems = self.GetFirstFolderItems(4)
delta = 10
side = (size - 3 * delta) / 2 - 1
rects = (Rectangle(delta + 3, delta + 12, side, side),
Rectangle(size / 2 + delta / 2 - 3, delta + 12, side, side),
Rectangle(delta + 3, size / 2 + delta / 2 + 6, side, side),
Rectangle(size / 2 + delta / 2 - 3, size / 2 + delta / 2 + 6,
side, side))
for rect, item in zip(rects, folderItems):
subImage = Bitmap.FromStream(MemoryStream(item.thumbnail()), False)
g.DrawImage(subImage, rect)
subImage.Dispose()
for rect in rects:
g.DrawRectangle(Pens.LightGray, rect)
# draw folder name
if parent: name = '[..]'
else: name = Path.GetFileName(self.path)
f = Font('Arial', 10)
g.DrawString(name, f, Brushes.Black,
RectangleF(2, 2, size - 2, size - 2))
f.Dispose()
# get the bytes of the image
imageBytes = BitmapToBytes(newImage)
# cleanup
g.Dispose()
newImage.Dispose()
return imageBytes