【Python】实现字体中字符的点阵转换
以下代码实现的是：紧凑转换。
其中使用的Image和ImageGrab模块需要安装PIL库。
from Tkinter import *
from tkMessageBox import *
import time
import Image
import ImageGrab
# some constant
HEIGHT = 20
WIDTH = 20
TRUE = 1
FALSE = 0
INVALID = 0
NONSEL = 1
SELECTED = 2
# some parameters
ENTRY_WIDTH = 58
# launch tk
root=Tk();root.title('Dot matrix')
class App(Frame):
def __init__(self,master):
Frame.__init__(self)
# bind event
master.bind('',self.LeftClick)
master.bind('',self.MiddleClick)
master.bind('',self.RightClick)
master.bind('',self.Generate)
master.bind('',self.Clear)
# set color
self.invalid_color="#%02x%02x%02x" % (255,255,255)
self.nonsel_color="#%02x%02x%02x" % (204,232,207)
self.selected_color="#%02x%02x%02x" % (250,0,0)
# set height
self.height_label=Label(master,text='Height: ',bg='green',fg='black')
self.height=IntVar()
self.height_entry=Entry(master,width=ENTRY_WIDTH,textvariable=self.height)
self.height_entry.bind('',self.UpdateSize)
self.height.set(HEIGHT)
# set width
self.width_label=Label(master,text='Width : ',bg='green',fg='black')
self.width=IntVar()
self.width_entry=Entry(master,width=ENTRY_WIDTH,textvariable=self.width)
self.width_entry.bind('',self.UpdateSize)
self.width.set(WIDTH)
# output code
self.output_label=Label(master,text='Output: ',bg='green',fg='black')
self.output_text=Text(master,height=8,width=ENTRY_WIDTH)
self.output_scroll=Scrollbar(master,command=self.output_text.yview)
self.output_text.configure(yscrollcommand=self.output_scroll.set)
# arrange space
self.height_label.grid(row=1,column=WIDTH,columnspan=2)
self.height_entry.grid(row=1,column=WIDTH+2,columnspan=1)
self.width_label.grid(row=2,column=WIDTH,columnspan=2)
self.width_entry.grid(row=2,column=WIDTH+2,columnspan=1)
self.output_label.grid(row=HEIGHT-6,column=WIDTH,columnspan=2)
self.output_text.grid(row=HEIGHT-6,column=WIDTH+2,rowspan=6,columnspan=2)
self.output_scroll.grid(row=HEIGHT-6,column=WIDTH+4,rowspan=6,columnspan=2,sticky=N+E+S+W)
# store the value
self.BlockList=[];self.LabelList=[]
self.BlockRowList=[];self.LabelRowList=[]
row=0;col=0
for i in range(HEIGHT*WIDTH):
L=Label(master,text=' ',bg='black',fg='white',relief=GROOVE,bd=1)
L.grid(row=row,column=col,sticky=N+E+S+W,ipadx=2,ipady=2)
L.row=row;L.col=col;L.status=INVALID
self.BlockRowList.append(0);self.LabelRowList.append(L)
col=col+1
if col>=WIDTH:
row=row+1;col=0
self.BlockList.append(self.BlockRowList)
self.LabelList.append(self.LabelRowList)
self.BlockRowList=[];self.LabelRowList=[]
# init
self.Clear(0)
# init automatic information
#self.mid_index = 0
self.counter = 0
self.AutoInfoList=[[1,0],[2,0],[3,0],[4,0],[5,0],[1,1],[2,2],[3,1],
[1,4],[2,4],[3,4],[4,4],[5,4],[1,5],[2,6],[3,5],
[4,6],[5,6],[1,8],[1,9],[1,10],[2,8],[3,8],[4,8],
[5,8],[5,9],[5,10],[3,9],[1,14],[1,13],[2,12],[3,12],
[3,13],[3,14],[4,14],[5,13],[5,12],[1,18],[1,17],[2,16],
[3,16],[3,17],[3,18],[4,18],[5,17],[5,16],[7,0],[7,1],
[7,2],[8,0],[9,0],[10,0],[11,0],[9,1],[7,4],[7,5],[7,6],
[8,6],[9,6],[9,5],[10,5],[11,5],[7,12],[7,13],[7,14],[8,13],
[9,13],[10,13],[11,13],[7,17],[8,16],[9,16],[10,16],[11,17],
[10,18],[9,18],[8,18],[13,2],[13,1],[14,0],[15,0],[15,1],[15,2],
[16,2],[17,1],[17,0],[13,4],[13,5],[13,6],[14,5],[15,5],[16,5],
[17,5],[13,9],[14,8],[15,8],[16,8],[17,8],[14,10],[15,10],[16,10],
[17,10],[15,9],[13,12],[14,12],[15,12],[16,12],[17,12],[13,13],
[14,14],[15,13],[16,14],[17,14],[13,16],[13,17],[13,18],[14,17],
[15,17],[16,17],[17,17]]
# timer
self.time=1000
self.after(self.time,self.OnTimer)
def __del__(self):
pass
def OnTimer(self):
''' for display animation
if self.mid_index <= WIDTH/2:
if self.mid_index != 0:
for i in range(2*self.mid_index):
self.UnFill(HEIGHT/2 - self.mid_index + i, WIDTH/2 - self.mid_index)
self.UnFill(HEIGHT/2 - self.mid_index + i, WIDTH/2 + self.mid_index - 1)
for i in range(2*self.mid_index - 2):
self.UnFill(HEIGHT/2 - self.mid_index, WIDTH/2 - self.mid_index + i + 1)
self.UnFill(HEIGHT/2 + self.mid_index - 1, WIDTH/2 - self.mid_index + i + 1)
self.mid_index += 1
self.after(50,self.OnTimer)
return
'''
if (self.counter >= len(self.AutoInfoList)): return
self.Fill(self.AutoInfoList[self.counter][0], self.AutoInfoList[self.counter][1])
self.counter += 1
self.after(50,self.OnTimer)
def LeftClick(self,event):
try:
grid_info = event.widget.grid_info()
i = grid_info["row"]; j = grid_info["column"]
if self.LabelList[int(i)][int(j)].status != INVALID:
self.Fill(int(i),int(j))
# for autoinfo: L = [int(i), int(j)]
# for autoinfo: self.AutoInfoList.append(L)
except:
pass
def MiddleClick(self,event):
self.RightClick(event)
''' for autoinfo:
string_info = ""
for i in range(len(self.AutoInfoList)):
string_info += "[%d,%d]," % (self.AutoInfoList[i][0], self.AutoInfoList[i][1])
self.output_text.delete(1.0,END)
self.output_text.insert(END,string_info)
'''
pass
def RightClick(self,event):
try:
grid_info = event.widget.grid_info()
i = grid_info["row"]; j = grid_info["column"]
if self.LabelList[int(i)][int(j)].status != INVALID:
self.UnFill(int(i),int(j))
except:
pass
def UpdateSize(self,event):
for i in range(HEIGHT):
for j in range(WIDTH):
if (i < self.height.get()) and (j < self.width.get()):
if self.LabelList[int(i)][int(j)].status == INVALID:
self.UnFill(i,j)
else:
self.Invalid(i,j)
def Clear(self,event):
for i in range(HEIGHT):
for j in range(WIDTH):
self.Invalid(i,j)
#self.height.set(HEIGHT)
#self.width.set(WIDTH)
for i in range(self.height.get()):
for j in range(self.width.get()):
self.UnFill(i,j)
def Generate(self,event):
font_height = self.height.get()
font_width = self.width.get()
font_byte_list = []
byte_tmp = 0
for i in range(font_height * font_width):
row = i % font_height
col = i / font_height
byte_index = i % 8;
byte_tmp += self.BlockList[row][col] << byte_index
if (i+1)%8 == 0:
font_byte_list.append(byte_tmp)
byte_tmp = 0
if (font_height * font_width) % 8 != 0:
font_byte_list.append(byte_tmp)
# output info
string_info = ""
string_info += "%d, /**/" % font_width
for i in range(len(font_byte_list)-1):
string_info += "0x%02X, " % font_byte_list[i]
string_info += "0x%02X" % font_byte_list[len(font_byte_list)-1]
self.output_text.delete(1.0,END)
self.output_text.insert(END,string_info)
def Fill(self,i,j):
self.BlockList[i][j]=1
self.LabelList[i][j].status=SELECTED
self.LabelList[i][j].config(relief=GROOVE,bg=str(self.selected_color),bd=1)
def UnFill(self,i,j):
self.BlockList[i][j]=0
self.LabelList[i][j].status=NONSEL
self.LabelList[i][j].config(relief=GROOVE,bg=str(self.nonsel_color),bd=1)
def Invalid(self,i,j):
self.BlockList[i][j]=0
self.LabelList[i][j].status=INVALID
self.LabelList[i][j].config(relief=GROOVE,bg=str(self.invalid_color),bd=1)
def LoadBmp(self):
im = Image.open("D:\\Dir\\Example.bmp")
if isinstance(im, Image.Image):
width, height = im.size
if (width > 20) or (height > 20):
pass
else:
self.width.set(width)
self.height.set(height)
self.UpdateSize(0)
pix = im.load()
for x in range(width):
for y in range(height):
if pix[x, y] == (255, 255, 255):
self.UnFill(y, x)
else:
self.Fill(y, x)
#generate the code
self.Generate(0)
else:
pass
def HelpInfo(self):
string_info = "Usage:\r\n\r\n" + \
"Use F6 or menu(Operation->Generate code) to generate code\r\n" + \
"Use F7 or menu(Operation->Clear grid) to clear the grid\r\n" + \
"Use mouse left click to select one grid\r\n" + \
"Use mouse right click to cancel the select\r\n" + \
"When modify the Height or Width value, press 'Enter' Key to take effect\r\n" + \
"\r\n\r\nIf you have any problem, please feel free to contact:\r\n" + \
"[email protected]\r\n"
showinfo('Help...', string_info)
def AboutInfo(self):
string_info = "Version: 1.0 \r\n" + \
"\r\n\r\nCompany\r\n" + \
"Copyright (C) 2011\r\n"
showinfo('About...', string_info)
# define the menu method
def LoadFont():
pass
def LoadBmp():
app.LoadBmp()
def Generate():
app.Generate(0)
def Clear():
app.Clear(0)
def HelpInfo():
app.HelpInfo()
def AboutInfo():
app.AboutInfo()
# menu
mainmenu=Menu(root)
root['menu']=mainmenu
loadmenu=Menu(mainmenu)
mainmenu.add_cascade(label='File',menu=loadmenu)
loadmenu.add_command(label='Load font',command=LoadFont)
loadmenu.add_command(label='Load bmp',command=LoadBmp)
loadmenu.add_separator()
loadmenu.add_command(label='Exit',command=root.quit)
operationmenu=Menu(mainmenu)
mainmenu.add_cascade(label='Operation',menu=operationmenu)
operationmenu.add_command(label='Generate code',command=Generate)
operationmenu.add_command(label='Clear grid',command=Clear)
helpmenu=Menu(mainmenu)
mainmenu.add_cascade(label='Help',menu=helpmenu)
helpmenu.add_command(label='Help...',command=HelpInfo)
helpmenu.add_command(label='About Dot matrix...',command=AboutInfo)
# main app object
app=App(root)
root.mainloop()
# end