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41 lines
No EOL
1.4 KiB
Python
41 lines
No EOL
1.4 KiB
Python
'''
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Canvas
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This class represents the canvas where the user can draw and edit sprites pixel by pixel.
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'''
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import tkinter as tk
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class Canvas(tk.Canvas):
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def __init__(self, parent):
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super().__init__(parent, bg="white", bd=0, highlightthickness=0)
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self.bind("<Button-1>", self.on_click)
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self.bind("<B1-Motion>", self.on_drag)
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self.zoom = 1.0
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self.pixel_size = 10
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self.pixels = {}
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def on_click(self, event):
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x, y = self.get_pixel_coordinates(event.x, event.y)
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self.pixels[(x, y)] = "black"
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self.draw_pixel(x, y)
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def on_drag(self, event):
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x, y = self.get_pixel_coordinates(event.x, event.y)
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self.pixels[(x, y)] = "black"
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self.draw_pixel(x, y)
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def get_pixel_coordinates(self, x, y):
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x = int(x / (self.pixel_size * self.zoom))
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y = int(y / (self.pixel_size * self.zoom))
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return x, y
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def draw_pixel(self, x, y):
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x1 = x * self.pixel_size * self.zoom
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y1 = y * self.pixel_size * self.zoom
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x2 = x1 + self.pixel_size * self.zoom
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y2 = y1 + self.pixel_size * self.zoom
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self.create_rectangle(x1, y1, x2, y2, fill="black")
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def zoom_in(self):
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self.zoom *= 2.0
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self.redraw_pixels()
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def zoom_out(self):
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self.zoom /= 2.0
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self.redraw_pixels()
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def redraw_pixels(self):
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self.delete("all")
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for (x, y), color in self.pixels.items():
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self.draw_pixel(x, y) |