问题：

如何在网格中显示图像的缩略图，然后使用tkinter和python在新窗口中打开一个图像？

王子明

2023-03-14

更新：找到解决方案并更新为自我回答。

我在一个目录中有20个jpg图像。使用Python 3.7 Tkinter 8.6。10.我访问它们，调整大小并将它们显示在网格的主窗口中。网格有12行x 5列=60帧。第1行中的所有帧都有标签，标签中填充了大小调整后的图像。第2行中的所有框架都有带有文本“放大”的标签。第3行中的所有框架都有带有文本“Select”的标签。这种模式重复。

点击"放大"按钮，我想显示完整的非调整大小的图像在一个新窗口。我在放大图像显示过程中面临一个问题。新窗口打开，但没有映像。我得到以下错误在控制台: -------------------- 控制台输出开始 --------------------

（ce7comb1）rohit@rohitu2004lts：~/PyWDUbuntu/thesis$python3 test\u gui\u 3。图像的py num=20数组=[home/rohit/PyWDUbuntu/thesis/imgs2detect20imgs/371903.jpg'，/home/rohit/PyWDUbuntu/thesis/imgs2detect20imgs/2192573.jpg'，“/home/rohit/PyWDUbuntu/thesis/imgs2detect20imgs/1989609.jpg'，”/home/rohit/PyWDUbuntu/thet/thet/detect20imgs/1283466.jpg'，“/home/home/rohit/PyWDUbuntu/PyWDUbuntu/detect/1897.jpg'/Imgs2Detect_20imgs/1624481.jpg'，“/home/rohit/PyWDUbuntu/thesis/Imgs2Detect_20imgs/36979.jpg'，”/home/rohit/PyWDUbuntu/thesis/Imgs2Detect_20imgs/148284.jpg'，“/home/rohit/PyWDUbuntu/thet/thesis/Imgs2Detect_20imgs/2209751.jpg'，“/home/rohit/PyWDUbuntu/thesis/Imgs2Detect/1440465.jpg'，”，“/home/pygs2detect/PyWDUbuntu/imgs9162.jpg'“/home/rohit/PyWDUbuntu/thesis/imgs2detect20imgs/2069887.jpg”、“/home/rohit/PyWDUbuntu/thesis/imgs2detect20imgs/1243756.jpg”、“/home/rohit/PyWDUbuntu/thesis/imgs2detect20imgs/2148982.jpg”、“/home/rohit/PyWDUbuntu/detect20imgs/984950.jpg”、“/home/therohit/PyWDUbuntu/theus/thesis/Imgs2Detect/1317;/pywdg、/home/romg”is/Imgs2Detect_20imgs/1920465.jpg'，'/home/rohit/PyWDUbuntu/thesis/Imgs2Detect_20imgs/1254659.jpg'，'/home/rohit/PyWDUbuntu/thesis/Imgs2Detect_20imgs/2209317.jpg'，'/home/rohit/PyWDUbuntu/thesis/Imgs2Detect_20imgs/371902.jpg']

n_行=12 n_列=5

Tkinter回调回溯（最近一次调用）中出现异常：调用返回self中的文件“/home/rohit/anaconda3/envs/ce7comb1/lib/python3.7/Tkinter/init.py”，第1705行。函数（*args）文件“test_gui_3.py”，第120行，在init小部件中的do_放大_btn_按功能图像=img_orig）文件“/home/rohit/anaconda3/envs/ce7comb1/lib/python3.7/tkinter/init.py”，第2766行。init（self，master，'label'，cnf，kw）文件“/home/rohit/anaconda3/envs/ce7comb1/lib/python3.7/tkinter/init.py”，第2299行，在init（widgetName，self.）额外self中_选项（cnf））\u tkinter。Tcl错误：映像“pyimage21”不存在

--------------------控制台输出端--------------------

这是python脚本的完整代码，我不知道我做错了什么。

# importing required packages
import tkinter as tk
from PIL import ImageTk, Image
import os

img_folder = r'/home/rohit/PyWDUbuntu/thesis/Imgs2Detect_20imgs/'

image_files_list = [os.path.join(img_folder, f) \
                    for f in os.listdir(img_folder) \
                    if os.path.isfile(os.path.join(img_folder, f))]
print(f"num of images = {len(image_files_list)}\narray=\n{image_files_list}")

class c_my_wnd_main_window:
    def __init__(self, _wnd_name):
        self.wnd = tk.Tk()
        self.wnd_name = _wnd_name
        self.frame_arr = None
    

def build_frames(self, _n_rows, _n_cols, _in_img_arr):
    ## create array holding skeleton form of the objects of required frame types
    self.frame_arr = []
    for r_idx in range(_n_rows):
        self.wnd.columnconfigure(r_idx, weight=1, minsize=50)
        self.wnd.columnconfigure(r_idx, weight=1, minsize=50)
        temp_array = []
        for c_idx in range(_n_cols):
            frame_name_str = ''.join( ['frm_', str(r_idx+1), '_', str(c_idx+1)] )
            if (r_idx % 3) == 0: ## picture frame
                temp_array.append(my_frm_image(self.wnd, frame_name_str))
            elif (r_idx % 3) == 1: ## enlarge frame
                temp_array.append(my_frm_enlarge(self.wnd, frame_name_str))
            else: ## select frame
                temp_array.append(my_frm_select(self.wnd, frame_name_str))
        self.frame_arr.append(temp_array)
    
    ## set the frame arrays objects as required
    img_idx = 0
    for r_idx in range(_n_rows):
        for c_idx in range(_n_cols):
            if (r_idx) % 3 == 0: ## picture frame
                self.frame_arr[r_idx][c_idx].frm_img.grid(row=r_idx,
                                                          column=c_idx,
                                                          padx=5, pady=5
                                                         )
                ## populate the image
                resized_image, file_with_path = opened_imgs_arr[img_idx]
                self.frame_arr[r_idx][c_idx].add_image(resized_image)
                img_idx += 1
                self.frame_arr[r_idx][c_idx].image_with_path = file_with_path
            elif (r_idx % 3) == 1: ## enlarge frame
                self.frame_arr[r_idx][c_idx].frm_enlarge.grid(row=r_idx,
                                                          column=c_idx,
                                                          padx=5, pady=5
                                                         )
                self.frame_arr[r_idx][c_idx].btn_enlarge.pack(padx=5, pady=5)
                self.frame_arr[r_idx][c_idx].enlarge_this_image = self.frame_arr[r_idx - 1][c_idx].image_with_path ## bcoz immediately previous row should reference the image frame
            else: ## select frame
                self.frame_arr[r_idx][c_idx].frm_select.grid(row=r_idx,
                                                          column=c_idx,
                                                          padx=5, pady=5
                                                         )
                self.frame_arr[r_idx][c_idx].btn_select.pack(padx=5, pady=5)

class my_frm_image:
    def __init__(self, _wnd, _frame_name):
        self.frm_img = tk.Frame(
            master=_wnd,
            relief=tk.SUNKEN,
            borderwidth=2)
        self.frame_name = _frame_name
        self.image_with_path = None
        self.lbl_img = tk.Label(master=self.frm_img, image=None)
        
def add_image(self, _in_img):
    #print(f" function add_image called ")
    self.lbl_img.configure(image=_in_img)
    self.lbl_img.pack(padx=1, pady=1)

class my_frm_enlarge:
    def __init__(self, _wnd, _frame_name):
        self.frm_enlarge = tk.Frame(
            master=_wnd,
            relief=tk.RAISED,
            borderwidth=4)
        self.frame_name = _frame_name
        self.enlarge_this_image = None
        self.btn_enlarge = tk.Button(
            master=self.frm_enlarge,
            text=f"Enlarge",
            bg="black", fg="white", 
            command=self.do_enlarge_btn_press_functionality
        )
        self.btn_enlarge.pack(padx=5, pady=5)
    

def do_enlarge_btn_press_functionality(self):
    #print(f"Would have enlarged image: {self.enlarge_this_image}")
    img_orig = ImageTk.PhotoImage(Image.open(self.enlarge_this_image))
    wnd_enlarged_img = tk.Tk()
    frm_enlarged_img = tk.Frame(
        master=wnd_enlarged_img,
        relief=tk.SUNKEN,
        borderwidth=2
    )
    #lbl_enlarged_img_path = tk.Label(master=wnd_enlarged_img, text=self.enlarge_this_image)
    #lbl_enlarged_img_path.pack()
    lbl_enlarged_img = tk.Label(
        master=wnd_enlarged_img,
        image=img_orig)
    lbl_enlarged_img.pack(padx=1, pady=1)
    frm_enlarged_img.pack()
    wnd_enlarged_img.mainloop()

class my_frm_select:
    def __init__(self, _wnd, _frame_name):
        self.frm_select = tk.Frame(
            master=_wnd,
            relief=tk.RAISED,
            borderwidth=4)
        self.frame_name = _frame_name
        self.btn_select = tk.Button(
            master=self.frm_select,
            text=f"Select",
            bg="black", fg="white",
            command=self.do_select_btn_press_functionality
        )
        self.btn_select.pack(padx=5, pady=5)
    

def do_select_btn_press_functionality(self):
    #print(f"Pressed Select button: {self.frame_name}")
    if self.btn_select["text"] == 'Select':
        ## Sink button and change text to Deselect
        self.btn_select.configure(text=f"Deselect", relief=tk.SUNKEN, bg="yellow", fg="black")
    else:
        ## Raise button and change text to Select
       self.btn_select.configure(text=f"Select", relief=tk.RAISED, bg="black", fg="white")
    return


o_main_window = c_my_wnd_main_window('main_window')

opened_imgs_arr = []
for img_idx in range(20):
    img_orig = Image.open(image_files_list[img_idx])
    img_resized = img_orig.resize((100, 80),Image.ANTIALIAS)
    ## append tuple of resized image and file with path
    opened_imgs_arr.append( (ImageTk.PhotoImage(img_resized), image_files_list[img_idx]) )
    del img_orig, img_resized

num_rows_of_images = 4
n_rows = num_rows_of_images * 3
n_cols = int(len(image_files_list) / num_rows_of_images)
print(f"n_rows = {n_rows}\t\tn_cols = {n_cols}")
o_main_window.build_frames(n_rows, n_cols, image_files_list)
o_main_window.wnd.mainloop()

print(f"\n\nNormal exit.\n\n")

请帮忙。

花飞扬

2023-03-14

有几件事我在概念上还没有弄清楚，还有一些其他的错误：如何以及为什么使用顶级窗口和根窗口；如何将参数传递给按钮调用的函数；在某些地方指定窗口标题的愚蠢错误。

如果它对任何人都有帮助，请将完整的清理代码上传到github：https://github.com/rbewoor/thesis/blob/master/GUI_related/test_gui_4.py

如何在网格中显示图像的缩略图，然后使用tkinter和python在新窗口中打开一个图像？

共有1个答案

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