134 lines
4.3 KiB
Python
134 lines
4.3 KiB
Python
import base64
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import tkinter
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GRID_COLOR = "#808080"
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GRID_GUIDE_COLOR = (128, 128, 255)
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class EditorCanvas(tkinter.Canvas):
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def __init__(self,project,*args,**kwargs):
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super().__init__(*args,**kwargs)
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self.project=project
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self.grid_size = 32
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self.current_char=33
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self.current_char_pixels=[]
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self.current_char_modified=False
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self.width=0
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self.height=0
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self.bind("<B1-Motion>",self.handle_draw)
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self.bind("<Button-1>",self.handle_draw)
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def draw(self):
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self.delete("all")
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# draw grid
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for x in range(self.project.char_res[0] + 1):
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x = x * self.grid_size
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self.create_line((x,0),(x,self.height),width=1,fill=GRID_COLOR)
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for y in range(self.project.char_res[1] + 1):
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y = y * self.grid_size
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self.create_line((0,y),(self.width,y),width=1,fill=GRID_COLOR)
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if self.project.does_char_exist(self.current_char) or self.current_char_modified:
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for i in range(len(self.current_char_pixels)):
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x=i//self.project.char_res[1]*self.grid_size
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y=i%self.project.char_res[1]*self.grid_size
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if self.current_char_pixels[i]>0:
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self.create_rectangle((x,y),(x+self.grid_size,y+self.grid_size),fill="white")
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else:
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self.create_line((0,0),(self.width,self.height),width=3,fill="red")
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self.create_line((self.width,0),(0,self.height),width=3,fill="red")
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def handle_draw(self,event):
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self.current_char_modified=True
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pixel_pos=self.cursor_pos_to_pixel((event.x,event.y))
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self.current_char_pixels[pixel_pos[0]*self.project.char_res[1]+pixel_pos[1]]=1
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self.draw()
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def load_char(self):
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self.current_char_modified=False
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if not self.project.does_char_exist(self.current_char):
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for x in range(len(self.current_char_pixels)):
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self.current_char_pixels[x]=0
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return
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base64_data=self.project.chars[chr(self.current_char)]
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pixels=base64.b64decode(base64_data.encode("ascii"))
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pixel_index=0
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for pixel in pixels:
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if pixel_index>=len(self.current_char_pixels):
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break
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for x in range(8):
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if pixel_index>=len(self.current_char_pixels):
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break
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self.current_char_pixels[pixel_index]=(pixel>>(7-x))&1
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pixel_index+=1
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self.draw()
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def save_char(self):
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if not self.current_char_modified:
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return
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empty=True
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for x in range(len(self.current_char_pixels)):
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if self.current_char_pixels[x]>0:
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empty=False
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break
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if empty:
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if self.project.does_char_exist(self.current_char):
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del(self.project.chars[chr(self.current_char)])
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return
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packed_data=[]
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bit_counter=0
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current_value=0
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for pixel in self.current_char_pixels:
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if bit_counter==8:
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packed_data.append(current_value)
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bit_counter=0
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current_value=0
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current_value|=(pixel<<(7-bit_counter))
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bit_counter+=1
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if bit_counter>1:
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packed_data.append(current_value)
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self.project.chars[chr(self.current_char)]=base64.b64encode(bytes(packed_data)).decode("ascii")
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def prev_glyph(self):
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self.save_char()
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self.current_char-=1
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self.keep_current_char_in_bounds()
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self.load_char()
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self.draw()
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def next_glyph(self):
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self.save_char()
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self.current_char+=1
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self.keep_current_char_in_bounds()
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self.load_char()
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self.draw()
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def cursor_pos_to_pixel(self,pos):
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pixel_pos = (int(pos[0] // self.grid_size), int(pos[1] // self.grid_size))
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return pixel_pos
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def keep_current_char_in_bounds(self):
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if self.current_char<0:
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self.current_char=0
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elif self.current_char>99999:
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self.current_char=99999
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def after_project_load(self):
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self.width=self.project.char_res[0]*self.grid_size
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self.height=self.project.char_res[1]*self.grid_size
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self.current_char_pixels=[0 for _ in range(self.project.char_res[0]*self.project.char_res[1])]
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self.load_char()
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