axmol/cocos2dx/menu_nodes/CCMenu.cpp

/****************************************************************************
Copyright (c) 2010-2011 cocos2d-x.org
Copyright (c) 2008-2010 Ricardo Quesada

http://www.cocos2d-x.org

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#include "CCMenu.h"
#include "CCDirector.h"
#include "CCApplication.h"
#include "CCPointExtension.h"
#include "CCTouchDispatcher.h"
#include "CCTouch.h"
#include "CCStdC.h"

#include <vector>

using namespace std;

namespace cocos2d{

	enum 
	{
		kDefaultPadding =  5,
	};

	//
	//CCMenu
	//
	CCMenu * CCMenu::menuWithItems(CCMenuItem* item, ...)
	{
		va_list args;
		va_start(args,item);
		CCMenu *pRet = new CCMenu();
		if (pRet && pRet->initWithItems(item, args))
		{
			pRet->autorelease();
			va_end(args);
			return pRet;
		}
		va_end(args);
		CC_SAFE_DELETE(pRet)
		return NULL;
	}

#if CC_ENABLE_LUA
	CCMenu* CCMenu::menuWithItem(CCMenuItem* item)
	{
		return menuWithItems(item, NULL);
	}

#endif

	bool CCMenu::initWithItems(CCMenuItem* item, va_list args)
	{
		if (CCLayer::init())
		{
			this->m_bIsTouchEnabled = true;

			// menu in the center of the screen
			CCSize s = CCDirector::sharedDirector()->getWinSize();

			this->m_bIsRelativeAnchorPoint = false;
			m_tAnchorPoint = ccp(0.5f, 0.5f);
			this->setContentSize(s);

			// XXX: in v0.7, winSize should return the visible size
			// XXX: so the bar calculation should be done there
			CCRect r;
            CCApplication::sharedApplication().statusBarFrame(&r);
			ccDeviceOrientation orientation = CCDirector::sharedDirector()->getDeviceOrientation();
			if (orientation == CCDeviceOrientationLandscapeLeft || orientation == CCDeviceOrientationLandscapeRight)
			{
				s.height -= r.size.width;
			}
			else
			{
				s.height -= r.size.height;
			}
			setPosition(ccp(s.width/2, s.height/2));

			int z=0;

			if (item)
			{
				this->addChild(item, z);
				CCMenuItem *i = va_arg(args, CCMenuItem*);
				while (i)
				{
					z++;
					this->addChild(i, z);
					i = va_arg(args, CCMenuItem*);
				}
			}
			//	[self alignItemsVertically];

			m_pSelectedItem = NULL;
			m_eState = kCCMenuStateWaiting;
			return true;
		}

		return false;
	}

	/*
	* override add:
	*/
	void CCMenu::addChild(CCNode * child, int zOrder)
	{
		CCLayer::addChild(child, zOrder);
	}

	void CCMenu::addChild(CCNode * child, int zOrder, int tag)
	{
		// we can not use RTTI, so we do not known the type of object
		/*CCAssert( dynamic_cast<CCMenuItem*>(child) != NULL, L"Menu only supports MenuItem objects as children");*/
		CCLayer::addChild(child, zOrder, tag);
	}

    void CCMenu::onExit()
    {
        if (m_eState == kCCMenuStateTrackingTouch)
        {
            m_pSelectedItem->unselected();
            m_eState = kCCMenuStateWaiting;
            m_pSelectedItem = NULL;
        }

        CCLayer::onExit();
    }

	//Menu - Events
	void CCMenu::registerWithTouchDispatcher()
	{
		CCTouchDispatcher::sharedDispatcher()->addTargetedDelegate(this, kCCMenuTouchPriority, true);
	}

	bool CCMenu::ccTouchBegan(CCTouch* touch, CCEvent* event)
	{
		if (m_eState != kCCMenuStateWaiting || ! m_bIsVisible)
		{
			return false;
		}
		m_pSelectedItem = this->itemForTouch(touch);
		if (m_pSelectedItem)
		{
			m_eState = kCCMenuStateTrackingTouch;
			m_pSelectedItem->selected();
			return true;
		}
		return false;
	}

	void CCMenu::ccTouchEnded(CCTouch *touch, CCEvent* event)
	{
		CCAssert(m_eState == kCCMenuStateTrackingTouch, "[Menu ccTouchEnded] -- invalid state");
		if (m_pSelectedItem)
		{
			m_pSelectedItem->unselected();
			m_pSelectedItem->activate();
		}
		m_eState = kCCMenuStateWaiting;
	}

	void CCMenu::ccTouchCancelled(CCTouch *touch, CCEvent* event)
	{
		CCAssert(m_eState == kCCMenuStateTrackingTouch, "[Menu ccTouchCancelled] -- invalid state");
		if (m_pSelectedItem)
		{
			m_pSelectedItem->unselected();
		}
		m_eState = kCCMenuStateWaiting;
	}

	void CCMenu::ccTouchMoved(CCTouch* touch, CCEvent* event)
	{
		CCAssert(m_eState == kCCMenuStateTrackingTouch, "[Menu ccTouchMoved] -- invalid state");
		CCMenuItem *currentItem = this->itemForTouch(touch);
		if (currentItem != m_pSelectedItem) 
		{
			if (m_pSelectedItem)
			{
				m_pSelectedItem->unselected();
			}
			m_pSelectedItem = currentItem;
			if (m_pSelectedItem)
			{
				m_pSelectedItem->selected();
			}
		}
	}

	void CCMenu::destroy(void)
	{
		release();
	}

	void CCMenu::keep(void)
	{
		retain();
	}

	//Menu - Alignment
	void CCMenu::alignItemsVertically()
	{
		return this->alignItemsVerticallyWithPadding(kDefaultPadding);
	}

	void CCMenu::alignItemsVerticallyWithPadding(float padding)
	{
		float height = -padding;
		if (m_pChildren && m_pChildren->count() > 0)
		{
            CCObject* pObject = NULL;
            CCARRAY_FOREACH(m_pChildren, pObject)
            {
                CCNode* pChild = (CCNode*) pObject;
                if (pChild)
                {
                    height += pChild->getContentSize().height * pChild->getScaleY() + padding;
                }
            }
		}

		float y = height / 2.0f;
		if (m_pChildren && m_pChildren->count() > 0)
		{
            CCObject* pObject = NULL;
            CCARRAY_FOREACH(m_pChildren, pObject)
            {
                CCNode* pChild = (CCNode*) pObject;
                if (pChild)
                {
                    pChild->setPosition(ccp(0, y - pChild->getContentSize().height * pChild->getScaleY() / 2.0f));
                    y -= pChild->getContentSize().height * pChild->getScaleY() + padding;
                }
            }
		}
	}

	void CCMenu::alignItemsHorizontally(void)
	{
		return this->alignItemsHorizontallyWithPadding(kDefaultPadding);
	}

	void CCMenu::alignItemsHorizontallyWithPadding(float padding)
	{

		float width = -padding;
		if (m_pChildren && m_pChildren->count() > 0)
		{
            CCObject* pObject = NULL;
            CCARRAY_FOREACH(m_pChildren, pObject)
            {
                CCNode* pChild = (CCNode*) pObject;
                if (pChild)
                {
                    width += pChild->getContentSize().width * pChild->getScaleX() + padding;
                }
            }
		}

		float x = -width / 2.0f;
		if (m_pChildren && m_pChildren->count() > 0)
		{
            CCObject* pObject = NULL;
            CCARRAY_FOREACH(m_pChildren, pObject)
            {
                CCNode* pChild = (CCNode*) pObject;
                if (pChild)
                {
                    pChild->setPosition(ccp(x + pChild->getContentSize().width * pChild->getScaleX() / 2.0f, 0));
     				x += pChild->getContentSize().width * pChild->getScaleX() + padding;
                }
            }
		}
	}

	void CCMenu::alignItemsInColumns(unsigned int columns, ...)
	{
		va_list args;
		va_start(args, columns);

		this->alignItemsInColumns(columns, args);

		va_end(args);
	}

	void CCMenu::alignItemsInColumns(unsigned int columns, va_list args)
	{
		vector<unsigned int> rows;
		while (columns)
		{
			rows.push_back(columns);
			columns = va_arg(args, unsigned int);
		}

		int height = -5;
		unsigned int row = 0;
		unsigned int rowHeight = 0;
		unsigned int columnsOccupied = 0;
		unsigned int rowColumns;

		if (m_pChildren && m_pChildren->count() > 0)
		{
            CCObject* pObject = NULL;
            CCARRAY_FOREACH(m_pChildren, pObject)
            {
                CCNode* pChild = (CCNode*) pObject;
                if (pChild)
                {
                    assert(row < rows.size());

				    rowColumns = rows[row];
				    // can not have zero columns on a row
				    assert(rowColumns);

				    float tmp = pChild->getContentSize().height;
				    rowHeight = (unsigned int)((rowHeight >= tmp || isnan(tmp)) ? rowHeight : tmp);

				    ++columnsOccupied;
				    if (columnsOccupied >= rowColumns)
				    {
					    height += rowHeight + 5;

					    columnsOccupied = 0;
					    rowHeight = 0;
					    ++row;
				    }
                }
            }
		}	

		// check if too many rows/columns for available menu items
		assert(! columnsOccupied);

		CCSize winSize = CCDirector::sharedDirector()->getWinSize();

		row = 0;
		rowHeight = 0;
		rowColumns = 0;
		float w;
		float x;
		float y = (float)(height / 2);

		if (m_pChildren && m_pChildren->count() > 0)
		{
            CCObject* pObject = NULL;
            CCARRAY_FOREACH(m_pChildren, pObject)
            {
                CCNode* pChild = (CCNode*) pObject;
                if (pChild)
                {
				    if (rowColumns == 0)
				    {
					    rowColumns = rows[row];
					    w = winSize.width / (1 + rowColumns);
					    x = w;
				    }

				    float tmp = pChild->getContentSize().height;
				    rowHeight = (unsigned int)((rowHeight >= tmp || isnan(tmp)) ? rowHeight : tmp);

				    pChild->setPosition(ccp(x - winSize.width / 2,
					                       y - pChild->getContentSize().height / 2));

				    x += w + 10;
				    ++columnsOccupied;

				    if (columnsOccupied >= rowColumns)
				    {
					    y -= rowHeight + 5;

					    columnsOccupied = 0;
					    rowColumns = 0;
					    rowHeight = 0;
					    ++row;
				    }
                }
            }
		}	
	}

	void CCMenu::alignItemsInRows(unsigned int rows, ...)
	{
		va_list args;
		va_start(args, rows);

		this->alignItemsInColumns(rows, args);

		va_end(args);
	}

	void CCMenu::alignItemsInRows(unsigned int rows, va_list args)
	{
		vector<unsigned int> columns;
		while (rows)
		{
			columns.push_back(rows);
			rows = va_arg(args, unsigned int);
		}

		vector<unsigned int> columnWidths;
		vector<unsigned int> columnHeights;

		int width = -10;
		int columnHeight = -5;
		unsigned int column = 0;
		unsigned int columnWidth = 0;
		unsigned int rowsOccupied = 0;
		unsigned int columnRows;

		if (m_pChildren && m_pChildren->count() > 0)
		{
            CCObject* pObject = NULL;
            CCARRAY_FOREACH(m_pChildren, pObject)
            {
                CCNode* pChild = (CCNode*) pObject;
                if (pChild)
                {
                    // check if too many menu items for the amount of rows/columns
				    assert(column < columns.size());

				    columnRows = columns[column];
				    // can't have zero rows on a column
				    assert(columnRows);

				    // columnWidth = fmaxf(columnWidth, [item contentSize].width);
				    float tmp = pChild->getContentSize().width;
				    columnWidth = (unsigned int)((columnWidth >= tmp || isnan(tmp)) ? columnWidth : tmp);

				    columnHeight += (int)(pChild->getContentSize().height + 5);
				    ++rowsOccupied;

				    if (rowsOccupied >= columnRows)
				    {
					    columnWidths.push_back(columnWidth);
					    columnHeights.push_back(columnHeight);
					    width += columnWidth + 10;

					    rowsOccupied = 0;
					    columnWidth = 0;
					    columnHeight = -5;
					    ++column;
				    }
                }
            }
		}

		// check if too many rows/columns for available menu items.
		assert(! rowsOccupied);

		CCSize winSize = CCDirector::sharedDirector()->getWinSize();

		column = 0;
		columnWidth = 0;
		columnRows = 0;
		float x = (float)(-width / 2);
		float y;

        if (m_pChildren && m_pChildren->count() > 0)
		{
            CCObject* pObject = NULL;
            CCARRAY_FOREACH(m_pChildren, pObject)
            {
                CCNode* pChild = (CCNode*) pObject;
                if (pChild)
                {
                    if (columnRows == 0)
				    {
					    columnRows = columns[column];
					    y = (float) columnHeights[column];
				    }

				    // columnWidth = fmaxf(columnWidth, [item contentSize].width);
				    float tmp = pChild->getContentSize().width;
				    columnWidth = (unsigned int)((columnWidth >= tmp || isnan(tmp)) ? columnWidth : tmp);

				    pChild->setPosition(ccp(x + columnWidths[column] / 2,
					                       y - winSize.height / 2));

				    y -= pChild->getContentSize().height + 10;
				    ++rowsOccupied;

				    if (rowsOccupied >= columnRows)
				    {
					    x += columnWidth + 5;
					    rowsOccupied = 0;
					    columnRows = 0;
					    columnWidth = 0;
					    ++column;
				    }
                }
            }
		}
	}

	// Opacity Protocol

	/** Override synthesized setOpacity to recurse items */
	void CCMenu::setOpacity(GLubyte var)
	{
		m_cOpacity = var;

		if (m_pChildren && m_pChildren->count() > 0)
		{
            CCObject* pObject = NULL;
            CCARRAY_FOREACH(m_pChildren, pObject)
            {
                CCNode* pChild = (CCNode*) pObject;
                if (pChild)
                {
                    CCRGBAProtocol *pRGBAProtocol = pChild->convertToRGBAProtocol();
				    if (pRGBAProtocol)
				    {
					    pRGBAProtocol->setOpacity(m_cOpacity);
				    }
                }
            }
		}
	}

	GLubyte CCMenu::getOpacity(void)
	{
		return m_cOpacity;
	}

	void CCMenu::setColor(cocos2d::ccColor3B var)
	{
		m_tColor = var;

		if (m_pChildren && m_pChildren->count() > 0)
		{
            CCObject* pObject = NULL;
            CCARRAY_FOREACH(m_pChildren, pObject)
            {
                CCNode* pChild = (CCNode*) pObject;
                if (pChild)
                {
                    CCRGBAProtocol *pRGBAProtocol = pChild->convertToRGBAProtocol();
                    if (pRGBAProtocol)
                    {
                    	pRGBAProtocol->setColor(m_tColor);
                    }
                }
            }
		}
	}

	ccColor3B CCMenu::getColor(void)
	{
		return m_tColor;
	}

	CCMenuItem* CCMenu::itemForTouch(cocos2d::CCTouch *touch)
	{
		CCPoint touchLocation = touch->locationInView(touch->view());
		touchLocation = CCDirector::sharedDirector()->convertToGL(touchLocation);

        if (m_pChildren && m_pChildren->count() > 0)
		{
            CCObject* pObject = NULL;
            CCARRAY_FOREACH(m_pChildren, pObject)
            {
                CCNode* pChild = (CCNode*) pObject;
                if (pChild && pChild->getIsVisible() && ((CCMenuItem*)pChild)->getIsEnabled())
                {
                    CCPoint local = pChild->convertToNodeSpace(touchLocation);
					CCRect r = ((CCMenuItem*)pChild)->rect();
					r.origin = CCPointZero;

					if (CCRect::CCRectContainsPoint(r, local))
					{
						return (CCMenuItem*)pChild;
					}
                }
            }
			
		}

		return NULL;
	}

}