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import pygame, sys
import pygame.freetype
###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 = pygame.Rect(0, 20, WINDOWWIDTH, 400)
CHATBOX_POS = pygame.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"]
#Version check
if (pygame.get_sdl_version() < (2,0,0)):
raise Exception("This example requires SDL2.")
#Initalize
pygame.init()
Screen = pygame.display.set_mode((WINDOWWIDTH,WINDOWHEIGHT))
pygame.display.set_caption("TextInput example")
FPSClock = pygame.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 = pygame.freetype.SysFont(FONTNAMES, 24)
FontSmall = pygame.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;
"""
pygame.key.start_text_input()
input_rect = pygame.Rect(80,80,320,40)
pygame.key.set_text_input_rect(input_rect)
_IMEEditing = False
_IMEText = ""
_IMETextPos = 0
_IMEEditingText = ""
_IMEEditingPos = 0
ChatList = []
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
return
elif event.type == pygame.KEYDOWN:
if (PRINT_EVENT):
print(event)
if _IMEEditing:
if (len(_IMEEditingText) == 0):
_IMEEditing = False
continue
if event.key == pygame.K_BACKSPACE:
if (len(_IMEText) > 0 and _IMETextPos > 0):
_IMEText = _IMEText[0:_IMETextPos-1] + _IMEText[_IMETextPos:]
_IMETextPos = max(0,_IMETextPos-1)
elif event.key == pygame.K_DELETE:
_IMEText = _IMEText[0:_IMETextPos] + _IMEText[_IMETextPos+1:]
elif event.key == pygame.K_LEFT:
_IMETextPos = max(0,_IMETextPos-1)
elif event.key == pygame.K_RIGHT:
_IMETextPos = min(len(_IMEText),_IMETextPos+1)
elif event.key in [pygame.K_RETURN, pygame.K_KP_ENTER] and len(event.unicode) == 0:
#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 == pygame.TEXTEDITING:
if (PRINT_EVENT):
print(event)
_IMEEditing = True
_IMEEditingText = event.text
_IMEEditingPos = event.start
elif event.type == pygame.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 in range(len(ChatList)):
FontSmall.render_to(Screen, (CHATLIST_POS.x, CHATLIST_POS.y + i*chat_height), ChatList[i], 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, pygame.freetype.STYLE_UNDERLINE)
start_pos.x += rect_textM.width
rect_textr = Font.render_to(Screen, start_pos, ime_textR, TEXTCOLOR)
pygame.display.update()
FPSClock.tick(FPS)
if __name__ == '__main__':
if 'showevent' in sys.argv:
PRINT_EVENT = True
main()
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