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Cleanup ScrollingList logic.

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This commit is contained in:
Don Honerbrink 2015-08-04 15:23:54 -05:00
parent f912afcdf0
commit b5e3384893
1 changed files with 21 additions and 28 deletions
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49
RetroFE/Source/Graphics/Component/ScrollingList.cpp
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@ -91,7 +91,6 @@ ScrollingList::ScrollingList(const ScrollingList &copy)
, imageType_(copy.imageType_)
, items_(NULL)
{
scrollPoints_ = NULL;
tweenPoints_ = NULL;
@ -125,7 +124,6 @@ ScrollingList::~ScrollingList()
void ScrollingList::setItems(CollectionInfo *info)
{
std::cout << "setItems" << std::endl;
deallocateSpritePoints();
collection_ = info;
@ -149,8 +147,7 @@ unsigned int ScrollingList::loopIncrement(unsigned int offset, unsigned int i, u
unsigned int ScrollingList::loopDecrement(unsigned int offset, unsigned int i, unsigned int size)
{
if(size == 0) return 0;
// (A - B) % C = ((A % C) - (B % C)) % C
return ((offset % size) - (i % size) ) % size;
return ((offset % size) - (i % size) + size) % size;
}
@ -170,12 +167,15 @@ void ScrollingList::deallocateSpritePoints()
{
deallocateTexture(i);
}
componentIndex_ = 0;
}
void ScrollingList::allocateSpritePoints()
{
for(unsigned int i = 0; items_ && i < scrollPoints_->size(); ++i)
{
componentIndex_ = 0;
unsigned int index = loopIncrement(itemIndex_, i, items_->size());
Item *item = items_->at(index);
@ -232,35 +232,27 @@ void ScrollingList::setSelectedIndex(int selectedIndex)
void ScrollingList::click(double nextScrollTime)
{
ViewInfo *cur;
ViewInfo *next;
if(currentScrollDirection_ == ScrollDirectionBack)
{
next = scrollPoints_->at(componentIndex_);
itemIndex_ = loopIncrement(itemIndex_, 1, items_->size());
componentIndex_ = loopIncrement(componentIndex_, 1, components_.size());
cur = scrollPoints_->at(componentIndex_);
// get the previous item
itemIndex_ = loopDecrement(itemIndex_, 1, items_->size());
Item *i = items_->at(itemIndex_);
componentIndex_ = loopDecrement(componentIndex_, 1, components_.size());
deallocateTexture(componentIndex_);
allocateTexture(componentIndex_, i);
}
else if(currentScrollDirection_ == ScrollDirectionForward)
{
next = scrollPoints_->at(componentIndex_);
itemIndex_ = loopDecrement(itemIndex_, 1, items_->size());
componentIndex_ = loopDecrement(componentIndex_, 1, components_.size());
cur = scrollPoints_->at(componentIndex_);
itemIndex_ = loopIncrement(itemIndex_, 1, items_->size());
Item *i = items_->at(itemIndex_);
deallocateTexture(componentIndex_);
allocateTexture(componentIndex_, i);
componentIndex_ = loopIncrement(componentIndex_, 1, components_.size());
}
else
{
return;
}
Item *i = items_->at(itemIndex_);
deallocateTexture(componentIndex_);
allocateTexture(componentIndex_, i);
Component *c = components_.at(componentIndex_);
resetTweens(c, tweenPoints_->at(componentIndex_), cur, next, 0);
}
void ScrollingList::pageUp()
@ -416,7 +408,8 @@ void ScrollingList::update(float dt)
for(unsigned int i = 0; i < tweenPoints_->size(); ++i)
{
Component *c = components_.at(i);
unsigned int cindex = loopIncrement(componentIndex_, i, components_.size());
Component *c = components_.at(cindex);
if(c) c->setTweens(tweenPoints_->at(i));
}