tkGemini/renderEngine.py

import tkinter as tk
import tkinter.font as tkFont

class Renderer():
    def __init__(self, parent, text):
        self.parent = parent
        self.text = text
        self.content = tk.Text(self.parent.root)
        self.h1Font = tkFont.Font(weight="bold", size="26")
        self.content.tag_config("h1", font=self.h1Font)
        self.h2Font = tkFont.Font(weight="bold", size="20")
        self.content.tag_config("h2", font=self.h2Font)
        self.h3Font = tkFont.Font(weight="bold", size="16")
        self.content.tag_config("h3", font=self.h3Font)
        self.underlineFont = tkFont.Font(underline=1)
        self.currX = 0
        self.currY = 1

    def addNormalText(self, text):
        self.content.insert(str(self.currY)+'.'+str(self.currX), text+"\n")
        self.currY+=1

    def addLink(self, text, url):
        index1 = str(self.currY)+'.'+str(self.currX)
        self.content.tag_config("link-"+index1, foreground="#00f", font=self.underlineFont)
        self.content.tag_bind("link-"+index1, "<Button-1>", lambda event, url=url, parent=self.parent:
                parent.linkClick(url))
        self.content.insert(index1, text+"\n")
        self.content.tag_add("link-"+index1, index1, str(self.currY)+'.'+str(self.currX+len(text)))
        self.currY+=1

    def addHeading1(self, text):
        index1 = str(self.currY)+'.'+str(self.currX)
        self.content.insert(index1, text+"\n")
        self.content.tag_add("h1", index1, str(self.currY)+'.'+str(self.currX+len(text)))
        self.currY+=1

    def addHeading2(self, text):
        index1 = str(self.currY)+'.'+str(self.currX)
        self.content.insert(index1, text+"\n")
        self.content.tag_add("h2", index1, str(self.currY)+'.'+str(self.currX+len(text)))
        self.currY+=1

    def addHeading3(self, text):
        index1 = str(self.currY)+'.'+str(self.currX)
        self.content.insert(index1, text+"\n")
        self.content.tag_add("h3", index1, str(self.currY)+'.'+str(self.currX+len(text)))
        self.currY+=1

    def addListItem(self, text):
        self.content.insert(str(self.currY)+'.'+str(self.currX), "\t• "+text+"\n")
        self.currY+=1

    def parse(self):
        self.content['state'] = 'normal'
        self.currY=1
        self.currX=0
        self.content.delete("1.0", tk.END)
        lines = self.text.split("\n")
        for line in lines:
            if(line.startswith("###")):
                self.addHeading3(line[3:].strip())
            elif(line.startswith("##")):
                self.addHeading2(line[2:].strip())
            elif(line.startswith("#")):
                self.addHeading1(line[1:].strip())
            elif(line.startswith("*")):
                self.addListItem(line[1:].strip())
            elif(line.startswith("=>")):
                line = line[2:].strip()
                url = line.split()[0]
                text = line[len(url):len(line)].strip()
                if text == "":
                    text = url
                self.addLink(text, url)
            else:
                self.addNormalText(line)

        self.content['state'] = 'disabled'