axmol/cocos2dx/platform/android/CCEGLView_android.cpp

/****************************************************************************
Copyright (c) 2010 cocos2d-x.org

http://www.cocos2d-x.org

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#include "CCEGLView_android.h"
#include "CCSet.h"
#include "CCDirector.h"
#include "ccMacros.h"
#include "CCTouchDispatcher.h"
#include "jni/IMEJni.h"
#include "jni/MessageJni.h"

#include <stdlib.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <EGL/egl.h>
#include <android/log.h>

PFNGLGENVERTEXARRAYSOESPROC glGenVertexArraysOESEXT = 0;
PFNGLBINDVERTEXARRAYOESPROC glBindVertexArrayOESEXT = 0;
PFNGLDELETEVERTEXARRAYSOESPROC glDeleteVertexArraysOESEXT = 0;

void initExtensions() {
     glGenVertexArraysOESEXT = (PFNGLGENVERTEXARRAYSOESPROC)eglGetProcAddress("glGenVertexArraysOES");
     glBindVertexArrayOESEXT = (PFNGLBINDVERTEXARRAYOESPROC)eglGetProcAddress("glBindVertexArrayOES");
     glDeleteVertexArraysOESEXT = (PFNGLDELETEVERTEXARRAYSOESPROC)eglGetProcAddress("glDeleteVertexArraysOES");
}

namespace cocos2d {

CCEGLView::CCEGLView()
    : m_bNotHVGA(false), 
      m_pDelegate(NULL),
      m_fScreenScaleFactor(1.0)  
{
    initExtensions();
}

void CCEGLView::setFrameWidthAndHeight(int width, int height)
{
	m_sSizeInPixel.width = width;
	m_sSizeInPixel.height = height;
}

bool CCEGLView::isIpad()
{
    return false;
}

void CCEGLView::create(int width, int height)
{
	if (width == 0 || height == 0)
	{
		return;
	}

	m_sSizeInPoint.width = width;
	m_sSizeInPoint.height = height;

	// calculate the factor and the rect of viewport	
	m_fScreenScaleFactor =  MIN((float)m_sSizeInPixel.width / m_sSizeInPoint.width, 
		                         (float)m_sSizeInPixel.height / m_sSizeInPoint.height);
	int viewPortW = (int)(m_sSizeInPoint.width * m_fScreenScaleFactor);
	int viewPortH = (int)(m_sSizeInPoint.height * m_fScreenScaleFactor);
	m_rcViewPort.origin.x = (m_sSizeInPixel.width - viewPortW) / 2;
	m_rcViewPort.origin.y = (m_sSizeInPixel.height - viewPortH) / 2;
	m_rcViewPort.size.width = viewPortW;
	m_rcViewPort.size.height = viewPortH;
	
	m_bNotHVGA = true;
	
}

CCEGLView::~CCEGLView()
{

}

CCSize  CCEGLView::getSize()
{
        if (m_bNotHVGA)
        {
                CCSize size(m_sSizeInPoint.width, m_sSizeInPoint.height);
	        return size;
        }
        else
        {
                CCSize size(m_sSizeInPixel.width, m_sSizeInPixel.height);
	        return size;
        }
	
}

bool CCEGLView::isOpenGLReady()
{
	return (m_sSizeInPixel.width != 0 && m_sSizeInPixel.height != 0);
}

void CCEGLView::release()
{
	terminateProcessJNI();
}

void CCEGLView::setTouchDelegate(EGLTouchDelegate * pDelegate)
{
	m_pDelegate = pDelegate;
}

EGLTouchDelegate* CCEGLView::getDelegate(void)
{
	return m_pDelegate;
}

void CCEGLView::swapBuffers()
{
}

bool CCEGLView::canSetContentScaleFactor()
{
    // can scale content?
    return false;
}

void CCEGLView::setContentScaleFactor(float contentScaleFactor)
{
	m_fScreenScaleFactor = contentScaleFactor;
} 

void CCEGLView::setViewPortInPoints(float x, float y, float w, float h)
{
    if (m_bNotHVGA)
    {
        float factor = m_fScreenScaleFactor / CC_CONTENT_SCALE_FACTOR();
        glViewport((GLint)(x * factor) + m_rcViewPort.origin.x,
            (GLint)(y * factor) + m_rcViewPort.origin.y,
            (GLint)(w * factor),
            (GLint)(h * factor));
    }
    else
    {
        glViewport((GLint)x,
            (GLint)y,
            (GLint)w,
            (GLint)h);
    }		
}

void CCEGLView::setScissorInPoints(float x, float y, float w, float h)
{
    if (m_bNotHVGA)
    {
        float factor = m_fScreenScaleFactor / CC_CONTENT_SCALE_FACTOR();
        glScissor((GLint)(x * factor) + m_rcViewPort.origin.x,
            (GLint)(y * factor) + m_rcViewPort.origin.y,
            (GLint)(w * factor),
            (GLint)(h * factor));
    }
    else
    {
        glScissor((GLint)x,
            (GLint)y,
            (GLint)w,
            (GLint)h);
    }		
}

CCEGLView& CCEGLView::sharedOpenGLView()
{
	static CCEGLView instance;
	return instance;
}

float CCEGLView::getScreenScaleFactor()
{
        return m_fScreenScaleFactor;
}

CCRect CCEGLView::getViewPort()
{
    if (m_bNotHVGA)
    {
        return m_rcViewPort;
    }
    else
    {
        CCRect rect(0, 0, 0, 0);
        return rect;
    }
}

void CCEGLView::setIMEKeyboardState(bool bOpen)
{

    setKeyboardStateJNI((int)bOpen);
}

}       // end of namespace cocos2d