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#!/usr/bin/env python
""" pg.examples.textinput
A little "console" where you can write in text.
Shows how to use the TEXTEDITING and TEXTINPUT events.
"""
import sys
import pygame as pg
import pygame.freetype as freetype
# Version check
if pg.get_sdl_version() < (2, 0, 0):
raise Exception("This example requires pygame 2.")
###CONSTS
# Set to true or add 'showevent' in argv to see IME and KEYDOWN events
PRINT_EVENT = False
# frames per second, the general speed of the program
FPS = 50
# size of window
WINDOWWIDTH, WINDOWHEIGHT = 640, 480
BGCOLOR = (0, 0, 0)
# position of chatlist and chatbox
CHATLIST_POS = pg.Rect(0, 20, WINDOWWIDTH, 400)
CHATBOX_POS = pg.Rect(0, 440, WINDOWWIDTH, 40)
CHATLIST_MAXSIZE = 20
TEXTCOLOR = (0, 255, 0)
# Add fontname for each language, otherwise some text can't be correctly displayed.
FONTNAMES = [
"notosanscjktcregular",
"notosansmonocjktcregular",
"notosansregular,",
"microsoftjhengheimicrosoftjhengheiuilight",
"microsoftyaheimicrosoftyaheiuilight",
"msgothicmsuigothicmspgothic",
"msmincho",
"Arial",
]
# Initalize
pg.init()
Screen = pg.display.set_mode((WINDOWWIDTH, WINDOWHEIGHT))
pg.display.set_caption("TextInput example")
FPSClock = pg.time.Clock()
# Freetype
# "The font name can be a comma separated list of font names to search for."
FONTNAMES = ",".join(str(x) for x in FONTNAMES)
Font = freetype.SysFont(FONTNAMES, 24)
FontSmall = freetype.SysFont(FONTNAMES, 16)
print("Using font: " + Font.name)
# Main loop process
def main():
global BGCOLOR, PRINT_EVENT, CHATBOX_POS, CHATLIST_POS, CHATLIST_MAXSIZE
global FPSClock, Font, Screen
"""
https://wiki.libsdl.org/SDL_HINT_IME_INTERNAL_EDITING
https://wiki.libsdl.org/Tutorials/TextInput
Candidate list not showing due to SDL2 problem ;w;
"""
pg.key.start_text_input()
input_rect = pg.Rect(80, 80, 320, 40)
pg.key.set_text_input_rect(input_rect)
_IMEEditing = False
_IMEText = ""
_IMETextPos = 0
_IMEEditingText = ""
_IMEEditingPos = 0
ChatList = []
while True:
for event in pg.event.get():
if event.type == pg.QUIT:
pg.quit()
return
elif event.type == pg.KEYDOWN:
if PRINT_EVENT:
print(event)
if _IMEEditing:
if len(_IMEEditingText) == 0:
_IMEEditing = False
continue
if event.key == pg.K_BACKSPACE:
if len(_IMEText) > 0 and _IMETextPos > 0:
_IMEText = (
_IMEText[0 : _IMETextPos - 1] + _IMEText[_IMETextPos:]
)
_IMETextPos = max(0, _IMETextPos - 1)
elif event.key == pg.K_DELETE:
_IMEText = _IMEText[0:_IMETextPos] + _IMEText[_IMETextPos + 1 :]
elif event.key == pg.K_LEFT:
_IMETextPos = max(0, _IMETextPos - 1)
elif event.key == pg.K_RIGHT:
_IMETextPos = min(len(_IMEText), _IMETextPos + 1)
# Handle ENTER key
elif event.key in [pg.K_RETURN, pg.K_KP_ENTER]:
# Block if we have no text to append
if len(_IMEText) == 0:
continue
# Append chat list
ChatList.append(_IMEText)
if len(ChatList) > CHATLIST_MAXSIZE:
ChatList.pop(0)
_IMEText = ""
_IMETextPos = 0
elif event.type == pg.TEXTEDITING:
if PRINT_EVENT:
print(event)
_IMEEditing = True
_IMEEditingText = event.text
_IMEEditingPos = event.start
elif event.type == pg.TEXTINPUT:
if PRINT_EVENT:
print(event)
_IMEEditing = False
_IMEEditingText = ""
_IMEText = _IMEText[0:_IMETextPos] + event.text + _IMEText[_IMETextPos:]
_IMETextPos += len(event.text)
# Screen updates
Screen.fill(BGCOLOR)
# Chat List updates
chat_height = CHATLIST_POS.height / CHATLIST_MAXSIZE
for i, chat in enumerate(ChatList):
FontSmall.render_to(
Screen,
(CHATLIST_POS.x, CHATLIST_POS.y + i * chat_height),
chat,
TEXTCOLOR,
)
# Chat box updates
start_pos = CHATBOX_POS.copy()
ime_textL = ">" + _IMEText[0:_IMETextPos]
ime_textM = (
_IMEEditingText[0:_IMEEditingPos] + "|" + _IMEEditingText[_IMEEditingPos:]
)
ime_textR = _IMEText[_IMETextPos:]
rect_textL = Font.render_to(Screen, start_pos, ime_textL, TEXTCOLOR)
start_pos.x += rect_textL.width
# Editing texts should be underlined
rect_textM = Font.render_to(
Screen, start_pos, ime_textM, TEXTCOLOR, None, freetype.STYLE_UNDERLINE
)
start_pos.x += rect_textM.width
Font.render_to(Screen, start_pos, ime_textR, TEXTCOLOR)
pg.display.update()
FPSClock.tick(FPS)
if __name__ == "__main__":
if "showevent" in sys.argv:
PRINT_EVENT = True
main()
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