// 點擊，彈出，選擇，關閉。
#ifndef DROPDOWNLIST_H_INCLUDED
#define DROPDOWNLIST_H_INCLUDED
namespace azl
{
#define DROPDOWNLIST_NORMAL_COLOR cocos2d::ccc4(128, 128, 128, 255)
#define DROPDOWNLIST_SELECTED_COLOR cocos2d::ccc4(200, 200, 200, 255)
#define DROPDOWNLIST_HIGHLIGHT_COLOR cocos2d::ccc4(60, 60, 200, 255)
#define DROPDOWNLIST_NORMAL_COLOR3 cocos2d::ccc3(128, 128, 128)
#define DROPDOWNLIST_SELECTED_COLOR3 cocos2d::ccc3(200, 200, 200)
#define DROPDOWNLIST_HIGHLIGHT_COLOR3 cocos2d::ccc3(60, 60, 200)
class DropDownList : public cocos2d::CCLayer
{
public:
class TouchHelper : public cocos2d::CCObject, public cocos2d::CCTouchDelegate
{
protected:
TouchHelper(DropDownList& list)
: list_(list)
{
cocos2d::CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this, cocos2d::kCCMenuHandlerPriority, true);
}
public:
static TouchHelper* create(DropDownList& list)
{
return new TouchHelper(list);
}
void destroy()
{
cocos2d::CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this);
autorelease();
}
virtual bool ccTouchBegan(cocos2d::CCTouch *touch, cocos2d::CCEvent *event)
{
list_.onClose();
return true;
}
DropDownList& list_;
};
protected:
DropDownList(cocos2d::CCLabelTTF* label, cocos2d::CCSize size)
: label_(label)
, show_(false)
, lastSelectedIndex_(0)
, helper_(NULL)
, item_(NULL)
{
menu_ = cocos2d::CCMenu::create();
menu_->setPosition(cocos2d::CCPoint(size.width / 2, size.height / 2));
menu_->setVertexZ(0.1f);
menu_->retain();
label_->setPosition(cocos2d::CCPoint(size.width / 2, size.height / 2));
addChild(label_);
setContentSize(size);
}
public:
~DropDownList()
{
menu_->release();
}
static DropDownList* create(cocos2d::CCLabelTTF* label, cocos2d::CCSize size)
{
DropDownList* list = new DropDownList(label, size);
list->autorelease();
return list;
}
std::string getString()
{
return label_->getString();
}
int getSelectedIndex()
{
return lastSelectedIndex_;
}
void setSelectedIndex(int index)
{
lastSelectedIndex_ = index;
for (int i = 0, j = (int)labels_.size(); i < j; ++i)
{
if (i == lastSelectedIndex_)
{
layers_[i]->setColor(DROPDOWNLIST_HIGHLIGHT_COLOR3);
label_->setString(labels_[i]->getString());
}
else
{
layers_[i]->setColor(DROPDOWNLIST_NORMAL_COLOR3);
}
}
}
void setDropMenuItem(cocos2d::CCMenuItem* item)
{
CC_ASSERT(item_ == NULL);
item_ = item;
addChild(item_);
cocos2d::CCSize size = getContentSize();
item_->setAnchorPoint(cocos2d::CCPoint(1.0f, 0.5f));
item_->setPosition(size.width, size.height / 2.0f);
label_->setAnchorPoint(cocos2d::CCPoint(0.0f, 0.5f));
label_->setPosition(cocos2d::CCPoint(4, size.height / 2.0f));
}
public:
void onEnter()
{
setTouchEnabled(true);
cocos2d::CCLayer::onEnter();
}
void registerWithTouchDispatcher()
{
cocos2d::CCDirector* pDirector = cocos2d::CCDirector::sharedDirector();
pDirector->getTouchDispatcher()->addTargetedDelegate(this, cocos2d::kCCMenuHandlerPriority, true);
}
virtual bool ccTouchBegan(cocos2d::CCTouch *touch, cocos2d::CCEvent *event)
{
if (!show_)
{
cocos2d::CCRect rect;
rect.origin = cocos2d::CCPointZero;
rect.size = getContentSize();
cocos2d::CCPoint position = convertTouchToNodeSpace(touch);
if (rect.containsPoint(position))
{
show_ = true;
helper_ = TouchHelper::create(*this);
addChild(menu_);
for (int i = 0, j = (int)labels_.size(); i < j; ++i)
{
if (i == lastSelectedIndex_)
{
layers_[i]->setColor(DROPDOWNLIST_HIGHLIGHT_COLOR3);
}
else
{
layers_[i]->setColor(DROPDOWNLIST_NORMAL_COLOR3);
}
}
if (item_)
{
item_->selected();
}
return true;
}
}
return false;
}
void addLabel(cocos2d::CCLabelTTF* label)
{
cocos2d::CCSize size = getContentSize();
cocos2d::CCLayerColor* normal = cocos2d::CCLayerColor::create(DROPDOWNLIST_NORMAL_COLOR, size.width, size.height);
cocos2d::CCLayerColor* selected = cocos2d::CCLayerColor::create(DROPDOWNLIST_SELECTED_COLOR, size.width, size.height);
layers_.push_back(normal);
labels_.push_back(label);
cocos2d::CCMenuItem* item = cocos2d::CCMenuItemSprite::create(
normal,
selected,
NULL,
this,
cocos2d::SEL_MenuHandler(&DropDownList::onSelected)
);
label->setPosition(cocos2d::CCPoint(size.width / 2, size.height / 2));
item->addChild(label);
item->setTag((int)labels_.size() - 1);
item->setPosition(0, - (int)labels_.size() * size.height);
menu_->addChild(item);
}
void onSelected(cocos2d::CCObject* sender)
{
cocos2d::CCMenuItem* item = dynamic_cast<cocos2d::CCMenuItem*>(sender);
if (item)
{
lastSelectedIndex_ = item->getTag();
label_->setString(labels_[item->getTag()]->getString());
}
onClose();
}
void onClose()
{
removeChild(menu_, true);
helper_->destroy();
helper_ = NULL;
show_ = false;
if (item_)
{
item_->unselected();
}
}
private:
cocos2d::CCMenu* menu_;
cocos2d::CCLabelTTF* label_;
std::vector<cocos2d::CCLabelTTF*> labels_;
std::vector<cocos2d::CCLayerColor*> layers_;
bool show_;
int lastSelectedIndex_;
TouchHelper* helper_;
cocos2d::CCMenuItem* item_;
};
}
#endif