mirror of https://github.com/python/cpython.git
104 lines
2.5 KiB
Python
104 lines
2.5 KiB
Python
|
# srcwin.py -- a source listing window
|
||
|
|
|
||
|
|
import stdwin
|
||
|
|
from stdwinevents import *
|
||
|
|
import basewin
|
||
|
|
|
||
|
|
WIDTH = 40
|
||
|
|
MAXHEIGHT = 24
|
||
|
|
|
||
|
|
class SourceWindow(basewin.BaseWindow):
|
||
|
|
|
||
|
|
def init(self, filename):
|
||
|
|
self.filename = filename
|
||
|
|
#
|
||
|
|
f = open(self.filename, 'r') # raise exception if not found
|
||
|
|
self.contents = f.read()
|
||
|
|
f.seek(0)
|
||
|
|
self.linecount = len(f.readlines())
|
||
|
|
f.close()
|
||
|
|
#
|
||
|
|
self.lineheight = lh = stdwin.lineheight()
|
||
|
|
self.leftmargin = stdwin.textwidth('00000000')
|
||
|
|
self.rightmargin = 30000 # Infinity
|
||
|
|
self.bottom = lh * self.linecount
|
||
|
|
#
|
||
|
|
stdwin.setdefwinpos(0, 0)
|
||
|
|
width = WIDTH*stdwin.textwidth('0')
|
||
|
|
height = lh*min(MAXHEIGHT, self.linecount)
|
||
|
|
stdwin.setdefwinsize(width, height)
|
||
|
|
self = basewin.BaseWindow.init(self, filename)
|
||
|
|
#
|
||
|
|
self.win.setdocsize(0, self.bottom + lh)
|
||
|
|
self.initeditor()
|
||
|
|
return self
|
||
|
|
|
||
|
|
def initeditor(self):
|
||
|
|
r = (self.leftmargin, 0), (self.rightmargin, self.bottom)
|
||
|
|
self.editor = self.win.textcreate(r)
|
||
|
|
self.editor.settext(self.contents)
|
||
|
|
|
||
|
|
def closeeditor(self):
|
||
|
|
self.editor.close()
|
||
|
|
|
||
|
|
def reopen(self):
|
||
|
|
self.closeeditor()
|
||
|
|
basewin.BaseWindow.reopen(self)
|
||
|
|
self.initeditor()
|
||
|
|
|
||
|
|
def close(self):
|
||
|
|
self.closeeditor()
|
||
|
|
basewin.BaseWindow.close(self)
|
||
|
|
|
||
|
|
# Override this method to format line numbers differently
|
||
|
|
def getmark(self, lineno):
|
||
|
|
return `lineno`
|
||
|
|
|
||
|
|
def dispatch(self, event):
|
||
|
|
if event[0] == WE_NULL: return # Dummy tested by mainloop
|
||
|
|
if event[0] == WE_DRAW or not self.editor.event(event):
|
||
|
|
basewin.BaseWindow.dispatch(self, event)
|
||
|
|
|
||
|
|
def draw(self, detail):
|
||
|
|
dummy = self.editor.draw(detail)
|
||
|
|
# Draw line numbers
|
||
|
|
(left, top), (right, bottom) = detail
|
||
|
|
topline = top/self.lineheight
|
||
|
|
botline = bottom/self.lineheight + 1
|
||
|
|
botline = min(self.linecount, botline)
|
||
|
|
d = self.win.begindrawing()
|
||
|
|
try:
|
||
|
|
h, v = 0, self.lineheight * topline
|
||
|
|
for lineno in range(topline+1, botline+1):
|
||
|
|
d.text((h, v), self.getmark(lineno))
|
||
|
|
v = v + self.lineheight
|
||
|
|
finally:
|
||
|
|
d.close()
|
||
|
|
|
||
|
|
def changemark(self, lineno):
|
||
|
|
left = 0
|
||
|
|
top = (lineno-1) * self.lineheight
|
||
|
|
right = self.leftmargin
|
||
|
|
bottom = lineno * self.lineheight
|
||
|
|
d = self.win.begindrawing()
|
||
|
|
try:
|
||
|
|
d.erase((left, top), (right, bottom))
|
||
|
|
d.text((left, top), self.getmark(lineno))
|
||
|
|
finally:
|
||
|
|
d.close()
|
||
|
|
|
||
|
|
def showline(self, lineno):
|
||
|
|
left = 0
|
||
|
|
top = (lineno-1) * self.lineheight
|
||
|
|
right = self.leftmargin
|
||
|
|
bottom = lineno * self.lineheight
|
||
|
|
self.win.show((left, top), (right, bottom))
|
||
|
|
|
||
|
|
|
||
|
|
TESTFILE = 'srcwin.py'
|
||
|
|
|
||
|
|
def test():
|
||
|
|
import mainloop
|
||
|
|
sw = SourceWindow().init(TESTFILE)
|
||
|
|
mainloop.mainloop()
|