Brew对位图操作

最新推荐文章于 2025-09-09 01:29:37 发布

原创最新推荐文章于 2025-09-09 01:29:37 发布 · 472 阅读

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IBitmap * getBitmapHalf(DisplayWeb *pMe,IImage *pImage)
2{
3    IBitmap *pScreen,*pBitmap,*pBitmap2;
4    ITransform *pTransform;
5    AEEImageInfo info;
6
7    IIMAGE_GetInfo(pImage,&info);
8
9    pScreen=IDISPLAY_GetDestination(pMe->pApp->a.m_pIDisplay);
10    if(pScreen)
11    {
12        IBITMAP_CreateCompatibleBitmap(pScreen,&pBitmap,info.cx,info.cy);
13        IBITMAP_CreateCompatibleBitmap(pScreen,&pBitmap2,info.cx,info.cy);
14        if(pBitmap && pBitmap2)
15        {
16                IDISPLAY_SetDestination(pMe->pApp->a.m_pIDisplay,pBitmap);
17                IIMAGE_Draw(pImage,0,0);
18
19                IBITMAP_QueryInterface(pBitmap2,AEECLSID_TRANSFORM,(void*)(ITransform**)&pTransform);
20                if(pTransform)
21                {
22                    ITRANSFORM_TransformBltSimple(pTransform,0,0,pBitmap,0,0,info.cx,info.cy,TRANSFORM_SCALE_HALF,COMPOSITE_KEYCOLOR);
23                    ITRANSFORM_Release(pTransform);
24                }
25                else
26                    IBITMAP_BltIn(pBitmap2,0,0,info.cx/2,info.cy/2,pBitmap,0,0,AEE_RO_COPY);
27
28                IDISPLAY_SetDestination(pMe->pApp->a.m_pIDisplay,NULL);
29
30                IBITMAP_Release(pBitmap);
31
32        }
33        IBITMAP_Release(pScreen);
34    }
35    return pBitmap2;
36}