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add loop scroll

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hi80482 2020-07-30 02:57:05 +08:00 committed by GitHub
parent 16d4bf0ecd
commit 41acbb6305
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 68 additions and 12 deletions
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80
Menu/GameShell/95_Music Player/play_list_page.py
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@ -77,6 +77,8 @@ class PlayListPage(Page):
_Backspace = False _Backspace = False
_ItemsPerPage = 6
def __init__(self): def __init__(self):
self._Icons = {} self._Icons = {}
Page.__init__(self) Page.__init__(self)
@ -196,30 +198,84 @@ class PlayListPage(Page):
self._Scroller.Init() self._Scroller.Init()
# def ScrollUp(self):
# if len(self._MyList) == 0:
# return
# self._PsIndex -= 1
# if self._PsIndex < 0:
# self._PsIndex = 0
# cur_li = self._MyList[self._PsIndex]
# if cur_li._PosY < 0:
# for i in range(0, len(self._MyList)):
# self._MyList[i]._PosY += self._MyList[i]._Height
# self._Scrolled +=1
# def ScrollDown(self):
# if len(self._MyList) == 0:
# return
# self._PsIndex +=1
# if self._PsIndex >= len(self._MyList):
# self._PsIndex = len(self._MyList) -1
# cur_li = self._MyList[self._PsIndex]
# if cur_li._PosY +cur_li._Height > self._Height:
# for i in range(0,len(self._MyList)):
# self._MyList[i]._PosY -= self._MyList[i]._Height
# self._Scrolled -=1
def ScrollUp(self): def ScrollUp(self):
if len(self._MyList) == 0: if len(self._MyList) <= 1:
return return
self._PsIndex -= 1
tmp = self._PsIndex
self._PsIndex -= self._ScrollStep
if self._PsIndex < 0: if self._PsIndex < 0:
self._PsIndex = 0 self._PsIndex = len(self._MyList) - 1 # to end
dy = abs(tmp - self._PsIndex)
cur_li = self._MyList[self._PsIndex] cur_li = self._MyList[self._PsIndex]
if cur_li._PosY < 0: if cur_li._PosY < 0:
for i in range(0, len(self._MyList)): for i in range(0, len(self._MyList)):
self._MyList[i]._PosY += self._MyList[i]._Height self._MyList[i]._PosY += self._MyList[i]._Height * dy
self._Scrolled +=1 self._Scrolled += dy
# loop scroll, to end
if self._PsIndex == len(self._MyList) - 1:
# check items per page
if len(self._MyList) > self._ItemsPerPage:
self._ItemsPerPage -= 1 # not include current item
for i in range(0, len(self._MyList)):
self._MyList[i]._PosY -= self._MyList[i]._Height * (dy - self._ItemsPerPage)
self._Scrolled -= dy
self._ItemsPerPage = 6 # reset to 6
def ScrollDown(self): def ScrollDown(self):
if len(self._MyList) == 0: if len(self._MyList) <= 1:
return return
self._PsIndex +=1
if self._PsIndex >= len(self._MyList):
self._PsIndex = len(self._MyList) -1
tmp = self._PsIndex
self._PsIndex +=self._ScrollStep
if self._PsIndex >= len(self._MyList):
self._PsIndex = 0 # to first
dy = abs(self._PsIndex - tmp)
cur_li = self._MyList[self._PsIndex] cur_li = self._MyList[self._PsIndex]
if cur_li._PosY +cur_li._Height > self._Height: if cur_li._PosY + cur_li._Height > self._Height:
for i in range(0,len(self._MyList)): for i in range(0,len(self._MyList)):
self._MyList[i]._PosY -= self._MyList[i]._Height self._MyList[i]._PosY -= self._MyList[i]._Height * dy
self._Scrolled -=1 self._Scrolled -= dy
# loop scroll, to first
if self._PsIndex == 0:
# check items per page
if len(self._MyList) > self._ItemsPerPage:
self._ItemsPerPage -= 1 # not include current item
for i in range(0, len(self._MyList)):
self._MyList[i]._PosY += self._MyList[i]._Height * (dy - self._ItemsPerPage)
self._Scrolled += dy
self._ItemsPerPage = 6 # reset to 6
def SyncScroll(self):# show where it left def SyncScroll(self):# show where it left
if self._Scrolled == 0: if self._Scrolled == 0: