Python 和 GeoTiff 图片，滚动问题

Question

我有一个问题，这是打开 GeoTiff 迷你照片库窗口但滚动对我不起作用的代码。代码有什么问题？我的印象是倒带和照片是两个独立的东西，我不知道如何将它们“粘合”在一起。非常感谢您的帮助。

import tkinter as tk
import glob


from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
import rasterio as rio

from rasterio.plot import show

SIZE_X = 100

SIZE_Y = 100

class Icon:
    def __init__(self, root):
        self.root = root

    self.ybar = tk.Scrollbar(self.root)
    self.item_canvas = tk.Canvas(self.root, width=354, height=401,
                                 yscrollcommand=self.ybar.set)

    self.ybar.configure(command=self.item_canvas.yview)

    self.item_canvas.configure(scrollregion=(0, 0, 1000, 1000))
    self.item_canvas.configure(background='#d8d8d9')

    self.ybar.pack(side=tk.RIGHT, fill=tk.Y)
    self.item_canvas.pack(side=tk.LEFT, expand=tk.TRUE, fill=tk.BOTH)

    self.get_icons()

def get_dir(self):
    link = r'work_dir/*.txt'
    with open(link) as f:
        self.file_photo = f.read()
        self.link_to_dir = glob.glob(self.file_photo.rsplit('/', 1)[0] + '/*.tif')
        self.number = len(self.link_to_dir)

def get_icons(self):
    '''Method to add a mini gallery'''
    self.get_dir()

    FIGSIZE = 2.5
    self.counter = -1

    if self.number <= 2:
        for i in range(0, self.number):
            self.fig = Figure(figsize=(FIGSIZE, FIGSIZE), dpi=60)
            self.canvasGeo = FigureCanvasTkAgg(self.fig, self.root)
            self.canvasGeo.get_tk_widget().place(x=i * 220, y=10)

            with rio.open(self.link_to_dir[i]) as src_plot:
                show(src_plot, ax=self.fig.add_subplot())
            self.canvasGeo.draw()


    elif self.number > 2:
        k = int()
        y = []
        for i in range(0, self.number):
            if i % 2 == 0:
                k = i
            y.append(k)
        for j in range(0, self.number):
            self.counter += 1
            if (j * 220) <= 220:
                self.fig = Figure(figsize=(FIGSIZE, FIGSIZE), dpi=60)
                self.canvasGeo = FigureCanvasTkAgg(self.fig, self.root)
                self.canvasGeo.get_tk_widget().place(x=10 + j * 190, y=10)

                with rio.open(self.link_to_dir[y[j]]) as src_plot:
                    show(src_plot, ax=self.fig.add_subplot())
                self.canvasGeo.draw()
            else:
                self.fig = Figure(figsize=(FIGSIZE, FIGSIZE), dpi=60)
                self.canvasGeo = FigureCanvasTkAgg(self.fig, self.root)
                self.canvasGeo.get_tk_widget().place(x=(-175 * y[j]) + j * 180, y=85*y[j])

                with rio.open(self.link_to_dir[y[j]]) as src_plot:
                    show(src_plot, ax=self.fig.add_subplot())
                self.canvasGeo.draw()
    else:
        tk.Label(self.root, text='Wrong Value').place(x=220, y=10)

if __name__ == '__main__':
    root = tk.Tk()
    Icon(root)
    root.mainloop()

Answer 1

定义 self.item_canvas 后，添加以下行：

self.ybar.config(command=self.item_canvas.yview)

并将画布的 scrollregion 设置为的行更新为：

self.item_canvas.configure(scrollregion=(0, 0, 354, 401))

新代码（以防您不知道在哪里添加上述代码行）：

import tkinter as tk
import glob
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.figure import Figure
import rasterio as rio
from rasterio.plot import show
SIZE_X = 100
SIZE_Y = 100

class Icon:
    def __init__(self, root):
        self.root = root

        self.ybar = tk.Scrollbar(self.root)
        self.item_canvas = tk.Canvas(self.root, width=354, height=401,
                                     yscrollcommand=self.ybar.set)

        self.ybar.configure(command=self.item_canvas.yview)

        self.item_canvas.configure(scrollregion=(0, 0, 1000, 1000))
        self.item_canvas.configure(background='#d8d8d9')

        self.ybar.pack(side=tk.RIGHT, fill=tk.Y)
        self.item_canvas.pack(side=tk.LEFT, expand=tk.TRUE, fill=tk.BOTH)

        self.get_icons()

    def get_dir(self):
        link = r'work_dir/*.txt'
        with open(link) as f:
            self.file_photo = f.read()
            self.link_to_dir = glob.glob(self.file_photo.rsplit('/', 1)[0] + '/*.tif')
            self.number = len(self.link_to_dir)

    def get_icons(self):
        '''Method to add a mini gallery'''
        self.get_dir()

        FIGSIZE = 2.5
        self.counter = -1

        if self.number <= 2:
            for i in range(0, self.number):
                self.fig = Figure(figsize=(FIGSIZE, FIGSIZE), dpi=60)
                self.canvasGeo = FigureCanvasTkAgg(self.fig, self.root)
                self.canvasGeo.get_tk_widget().place(x=i * 220, y=10)

                with rio.open(self.link_to_dir[i]) as src_plot:
                    show(src_plot, ax=self.fig.add_subplot())
                self.canvasGeo.draw()


    elif self.number > 2:
        k = int()
        y = []
        for i in range(0, self.number):
            if i % 2 == 0:
                k = i
            y.append(k)
        for j in range(0, self.number):
            self.counter += 1
            if (j * 220) <= 220:
                self.fig = Figure(figsize=(FIGSIZE, FIGSIZE), dpi=60)
                self.canvasGeo = FigureCanvasTkAgg(self.fig, self.root)
                self.canvasGeo.get_tk_widget().place(x=10 + j * 190, y=10)

                with rio.open(self.link_to_dir[y[j]]) as src_plot:
                    show(src_plot, ax=self.fig.add_subplot())
                self.canvasGeo.draw()
            else:
                self.fig = Figure(figsize=(FIGSIZE, FIGSIZE), dpi=60)
                self.canvasGeo = FigureCanvasTkAgg(self.fig, self.root)
                self.canvasGeo.get_tk_widget().place(x=(-175 * y[j]) + j * 180, y=85*y[j])

                with rio.open(self.link_to_dir[y[j]]) as src_plot:
                    show(src_plot, ax=self.fig.add_subplot())
                self.canvasGeo.draw()
    else:
        tk.Label(self.root, text='Wrong Value').place(x=220, y=10)

if __name__ == '__main__':
    root = tk.Tk()
    Icon(root)
    root.mainloop()