axmol/cocos2dx/platform/uphone/CCXBitmapDC.cpp

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

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#include <cstring>
#include "CCXBitmapDC.h"
#include "CCXApplication_uphone.h"
#include "CCDirector.h"
#include "platform/platform.h"

namespace cocos2d {

    static TWindow * s_pMemWnd = NULL;

	CCXBitmapDC::CCXBitmapDC(int width, int height)
        : m_pBitmap(NULL)
	{
        m_pBitmap = TBitmap::Create(width, height, 32);
	}

	CCXBitmapDC::CCXBitmapDC(const char *text, CGSize dimensions, UITextAlignment alignment, const char *fontName, float fontSize)
        : m_pBitmap(NULL)
	{
        TUChar *pText = NULL; 
        do 
        {
            // create font
            TFont font;
            CCX_BREAK_IF(! font.Create(0, (Int32)fontSize));

            // text
            Int32 len = strlen(text) + 1;
            CCX_BREAK_IF(! (pText = new TUChar[len]));
            TUString::StrGBToUnicode(pText, (Char*)text);

            // calculate text size
            if (CGSize::CGSizeEqualToSize(dimensions, CGSizeZero))
            {
                m_tSize.width = font.CharsWidth(pText,len);
                m_tSize.height = font.LineHeight();
            }else
            {
                m_tSize = dimensions;
            }

            Int16 width = (Int16)m_tSize.width;
            Int16 height = (Int16)m_tSize.height;

            // create bitmap
            CCX_BREAK_IF(! (m_pBitmap = TBitmap::Create(width, height, 32)));

            // create memory window
            if (s_pMemWnd)
            {
                TRectangle rcMemWnd(0, 0, 0, 0);
                s_pMemWnd->GetClientBounds(&rcMemWnd);
                if (rcMemWnd.Width() < width || rcMemWnd.Height() < height)
                {
                    s_pMemWnd->CloseWindow();
                    s_pMemWnd = NULL;
                }
            }

            do 
            {
                // if memery window is already break
                CCX_BREAK_IF(s_pMemWnd);

                CCX_BREAK_IF(! (s_pMemWnd = new TWindow(CCXApplication::sharedApplication())));

                Coord nCurrentWidth = CCXApplication::GetCurrentApplication()->GetScreenWidth();
                Coord nCurrentHeight = CCXApplication::GetCurrentApplication()->GetScreenHeight();
                
                Coord nMemWndW = (width >= nCurrentWidth) ? width : nCurrentWidth;
                Coord nMemWndH = (height >= nCurrentHeight) ? height : nCurrentHeight;
                CCX_BREAK_IF(s_pMemWnd->CreateMemWindow(nMemWndW, nMemWndH,screenTransparentFormat));
                delete s_pMemWnd;
                s_pMemWnd = NULL;
            } while (0);

            CCX_BREAK_IF(! s_pMemWnd);
            
            // create DC
            TDC dc(s_pMemWnd);
            // set DC styles
            UInt32 styles = GUI_API_STYLE_SPECIFY_FORE_COLOR |  GUI_API_STYLE_ROP_MODE_TRANSPARENT |
                GUI_API_STYLE_SPECIFY_BACK_COLOR | GUI_API_STYLE_ALIGNMENT_MIDDLE | GUI_API_STYLE_SPECIFY_FONT;

            switch (alignment)
            {
            case UITextAlignmentLeft:
                styles |= GUI_API_STYLE_ALIGNMENT_LEFT;
                break;
            case UITextAlignmentCenter:
                styles |= GUI_API_STYLE_ALIGNMENT_CENTER;
                break;
            case UITextAlignmentRight:
                styles |= GUI_API_STYLE_ALIGNMENT_RIGHT;
                break;
            default:
                styles |= GUI_API_STYLE_ALIGNMENT_CENTER;
                break;
            }

            s_pMemWnd->GetMemWindowTBitmapPtr()->Fill32(RGBA(0, 0, 0, 0), 0, 0, width, height);

            TRectangle rect(0, 0, width, height);
            dc.DrawTextInRectangleEx(pText, 0, RGBA(255,255,255,255), RGBA(0,0,0,255), font, &rect, styles);

            dc.ReadBitmap(m_pBitmap, 0, 0);

        } while (0);
        if (pText)
        {
            delete[] pText;
            pText = NULL;
        }
	}

	CCXBitmapDC::~CCXBitmapDC(void)
	{
        if (m_pBitmap)
        {
            m_pBitmap->Destroy();
            m_pBitmap = NULL;
        }
	}

	void *CCXBitmapDC::getBuffer()
	{
		return m_pBitmap->GetDataPtr();
	}

	CGSize CCXBitmapDC::getSize()
	{
		return m_tSize;
	}

	TBitmap* CCXBitmapDC::getBitmap()
	{
		return m_pBitmap;
	}
}