def main():
root = Tk()
root.columnconfigure(0, weight=1)
root.rowconfigure(0, weight=1)
root.geometry('900x600+50+50')
root.title('Imagepreview Test')
window = Frame(root)
window.grid(column=0, row=0, sticky='news')
window.columnconfigure(0, weight=1)
window.rowconfigure(0, weight=0)
window.rowconfigure(1, weight=1)
topWidget = Label(window, text='Image Preview', font=('Arial', '32'))
topWidget.grid(column=0, row=0, sticky='we')
topWidget.columnconfigure(0, weight=1)
topWidget.rowconfigure(0, weight=1)
'''************ImagePreview************'''
previewFrame = Frame(window)
previewFrame.grid(column=0, row=1, sticky='news')
previewFrame.columnconfigure(0, weight=1)
previewFrame.rowconfigure(0, weight=1)
try:
testImage = Image.open('test.jpg')
except:
testImage = Image.new('RGB', (100, 100), color='#999999')
preview = Imagepreview.Imagepreview(previewFrame,
testImage,
zoomscale=1.2,
minzoomlevel=0.1,
maxzoomlevel=20.0,
quality=0,
backgroundcolor='#999999')
preview.grid(column=0, row=0, sticky='news')
'''************************************'''
buttonColor = 'gray80'
controlFrame = Frame(window)
controlFrame.grid(column=1, row=0, rowspan=3, padx=3)
previewFrame.rowconfigure(2, weight=0)
def update_label(event=None):
infoLabel.config(
anchor='w',
text=
'Scale:\t\tx{}\n\nWidth:\t\t{}\nHeight:\t\t{}\n\nScale width:\t{}\nScale height:\t{}'
.format(round(preview.canvasScale,
2), testImage.width, testImage.height,
preview.resizedImage.width, preview.resizedImage.height))
def reset_button(event=None):
preview.reset_preview()
update_label()
def original_button(event=None):
preview.original_zoom()
update_label()
resetButton = Button(controlFrame,
text='Reset Preview (Ctrl+R)',
command=reset_button,
bg=buttonColor)
resetButton.grid(column=0, row=0, sticky='we')
originalButton = Button(controlFrame,
text='x1.0 zoom (Num 1)',
command=original_button,
bg=buttonColor)
originalButton.grid(column=0, row=1, sticky='we')
seperatorOne = Separator(controlFrame)
seperatorOne.grid(column=0, row=2, sticky='we', pady=10)
infoLabel = Label(controlFrame, anchor='w')
infoLabel.grid(column=0, row=3, sticky='s')
infoLabel.config(
text=
'Scale:\t\tx{}\n\nWidth:\t\t{}\nHeight:\t\t{}\n\nScale width:\t{}\nScale height:\t{}'
.format(round(preview.canvasScale,
2), testImage.width, testImage.height,
preview.resizedImage.width, preview.resizedImage.height))
if os.name == 'nt':
root.bind('<MouseWheel>', update_label)
elif os.name == 'posix':
root.bind('<Button-4>', update_label)
root.bind('<Button-5>', update_label)
# root.bind('<MouseWheel>', update_label)
root.bind('1', original_button)
root.bind('<Control-r>', reset_button)
def update_quality(x):
for child in qualityFrame.winfo_children():
try:
child.configure(bg='white', fg='black')
except:
pass
if x == 0:
qualityZero.configure(bg='gray10', fg='white')
elif x == 1:
qualityOne.configure(bg='gray10', fg='white')
elif x == 2:
qualityTwo.configure(bg='gray10', fg='white')
elif x == 3:
qualityThree.configure(bg='gray10', fg='white')
elif x == 4:
qualityFour.configure(bg='gray10', fg='white')
preview.resizeQuality = x
preview.scaleChanged = True
preview.display_image(image=preview.previewImage, quality=x)
seperatorTwo = Separator(controlFrame)
seperatorTwo.grid(column=0, row=4, sticky='we', pady=10)
qualityFrame = Frame(controlFrame)
qualityFrame.grid(column=0, row=5, sticky='we', padx=30)
qualityFrame.columnconfigure(0, weight=1)
qualityLabel = Label(qualityFrame,
text='Resize Filter',
font=('Arial', '10', 'bold'))
qualityLabel.grid(column=0, row=0, sticky='we', pady=5)
qualityZero = Button(qualityFrame,
text='0 (NEAREST)',
anchor='w',
command=lambda: update_quality(0))
qualityZero.grid(column=0, row=1, sticky='we')
qualityOne = Button(qualityFrame,
text='1 (BILINEAR)',
anchor='w',
command=lambda: update_quality(1))
qualityOne.grid(column=0, row=2, sticky='we')
qualityTwo = Button(qualityFrame,
text='2 (HAMMING)',
anchor='w',
command=lambda: update_quality(2))
qualityTwo.grid(column=0, row=3, sticky='we')
qualityThree = Button(qualityFrame,
text='3 (BICUBIC)',
anchor='w',
command=lambda: update_quality(3))
qualityThree.grid(column=0, row=4, sticky='we')
qualityFour = Button(qualityFrame,
text='4 (LANCZOS)',
anchor='w',
command=lambda: update_quality(4))
qualityFour.grid(column=0, row=5, sticky='we')
update_quality(0)
seperatorThree = Separator(controlFrame)
seperatorThree.grid(column=0, row=6, sticky='we', pady=10)
def load_image():
try:
filetypes = [('JPEG', '*.jpg *.jpeg'), ('PNG', '*.png'),
("all files", "*.*")]
testImage = Image.open(
askopenfilename(title='Load Image...',
defaultextension='.',
filetypes=filetypes))
preview.update_image(image=testImage)
except AttributeError:
pass
loadButton = Button(controlFrame,
text='Load Image',
font=('Arial', '18'),
command=load_image,
bg=buttonColor)
loadButton.grid(column=0, row=7, sticky='we')
window.update()
root.minsize(root.winfo_width(), root.winfo_height())
preview.reset_preview()
window.mainloop()
