playgif.c

基于minigui开发的一套图形控件系统

			if (dwStyle & GFS_NORMALGIF)
				SendMessage(hWnd, GFM_SETTIMER, 0, 0);
			return 0;
        }
        break; 
		case GFM_CHANGEGIF:
		{
			PPLAYGIFDATA padddata = (PPLAYGIFDATA)lParam;
			
			KillTimer(hWnd, GetDlgCtrlID(hWnd));
        	CleanPlayGif(pgifctrldata, dwStyle);
			memset(pgifctrldata, 0, sizeof(PLAYGIFCTRLDATA));
			InitPlayGif(pgifctrldata, padddata, dwStyle);
			
			if (dwStyle & GFS_NORMALGIF)
				SendMessage(hWnd, GFM_SETTIMER, 0, 0);
			
			InvalidateRect(hWnd, NULL, TRUE);
			break;
		}
        case MSG_GETDLGCODE:                  
                return DLGC_PUSHBUTTON;
             break;
        case MSG_SIZECHANGING:
        {
             const RECT* rcExpect = (const RECT*)wParam;
             RECT* rcResult = (RECT*)lParam;

             if((rcExpect->right-rcExpect->left) == 0)
             {
             	if(pgifctrldata->gifData)
             	{
             		PBITMAP pbmp = EbGetCurrentGIFBmp(pgifctrldata->gifData);
             		if(pbmp)
             		{
             			rcResult->top = rcExpect->top;
             			rcResult->left = rcExpect->left;
             			rcResult->right = rcResult->left + pgifctrldata->gifData->first->left + pbmp->bmWidth;
             			rcResult->bottom = rcResult->top + pgifctrldata->gifData->first->top + pbmp->bmHeight;
             		}
             	}
             }
        }
        break;
		case MSG_MOUSEMOVE:
		{
			int x, y;
		    RECT cl;
		    
		    if (GetCapture () != hWnd)
		    {
            	SetCapture (hWnd);
                SendMessage(hWnd, MSG_SETFOCUS, 0, 0);
            	break;
	        }
              
            x = LOSWORD(lParam);
            y = HISWORD(lParam);
            ScreenToWindow(GetParent (hWnd), &x, &y);
            GetWindowRect(hWnd,&cl);
            if (PtInRect ((PRECT)&cl, x, y))
            {
                if (GetCapture () == hWnd)
               		break;
             	SetCapture (hWnd);
                SendMessage(hWnd, MSG_SETFOCUS, 0, 0);
            }
            else if (pgifctrldata->status & GFSS_FOCUS) 
			{
            	if (GetCapture () == hWnd)
            		ReleaseCapture ();
				
              	SendMessage(hWnd, MSG_KILLFOCUS, 0, 0);
            }
        }
        break;
		case MSG_SETFOCUS:
		{
			if (dwStyle & GFS_NORMALGIF)
				break;
			
			if (pgifctrldata->status & GFSS_FOCUS)
				break;
			else
			{
				pgifctrldata->status |= GFSS_FOCUS;
				if (GetCapture () != hWnd)
		    		SetCapture (hWnd);
				InvalidateRect(hWnd, NULL, FALSE);
				SendMessage(hWnd, GFM_SETTIMER, 0, 0);
				NotifyParent (hWnd, id, GFN_SETFOCUS);
			}
			break;
		}
		case MSG_KILLFOCUS:
		{
			if (dwStyle & GFS_NORMALGIF)
				break;
			
			if ( pgifctrldata->status & GFSS_FOCUS)
			{
				pgifctrldata->status &= ~GFSS_FOCUS;
				if (GetCapture () == hWnd)
            		ReleaseCapture ();
				InvalidateRect(hWnd, NULL, FALSE);
				SendMessage(hWnd, GFM_KILLTIMER, 0, 0);
				NotifyParent (hWnd, id, GFN_KILLFOCUS);
			}
			break;
		}
        case MSG_DESTROY:
		{
			KillTimer(hWnd, GetDlgCtrlID(hWnd));
			CleanPlayGif(pgifctrldata, dwStyle);
			SetWindowAdditionalData2(hWnd, 0);
        	break;                     
        }
		case MSG_LBUTTONDOWN:
            if (GetCapture () != hWnd)
            {
                SetCapture (hWnd);
            }
			SendMessage(hWnd, MSG_SETFOCUS, 0, 0);
            InvalidateRect (hWnd, NULL, TRUE);
        break;
        case MSG_LBUTTONUP:
        {
            int x, y;
            DWORD dwState;
            RECT cl;
		
            if (GetCapture() != hWnd)
                break;
  
            x = LOSWORD(lParam);
            y = HISWORD(lParam);
            ScreenToWindow(GetParent (hWnd), &x, &y);
            GetWindowRect(hWnd,&cl);

            if (PtInRect (&cl, x, y))
            {               	  
                SendMessage(hWnd, MSG_SETFOCUS, 0, 0);
                NotifyParent (hWnd, id, GFN_CLICKED);
            }
            else
			{
            	ReleaseCapture ();
                SendMessage(hWnd, MSG_KILLFOCUS, 0, 0);
            }
        }
        return 0;

        case MSG_NCPAINT:
        case MSG_ERASEBKGND:
        {
        	return 0;
        }
        break;			
        case GFM_GETTIMES:
        {
			#ifdef DUG_INFO
			PBITMAP pbmp;
			PGIFBITMAPELEMENT pitem;
			HDC hdc = BeginPaint(hWnd);
			int i=1;
			char gifname[24];
			
			fprintf(stderr, "___DUG PLAYGIF save gif begin.\n");
			pitem = pgifctrldata->gifData->first;
			while(pitem)
			{
				fprintf(stderr, "___DUG PLAYGIF save gif%d .\n", i);
				memset(gifname, 0, 24);
				sprintf(gifname, "gif%d.bmp", i++);
				pbmp = &(pitem->Bitmap);
				SaveBitmapToFile(hdc, pbmp, gifname);
				pitem=pitem->next;
			}
			EndPaint(hWnd, hdc);
			fprintf(stderr, "___DUG PLAYGIF save gif end.\n");
			#endif
			
        	if(pgifctrldata->gifData)
        		return pgifctrldata->gifData->delaytime;
			else 
				return 0;
        }
        break;
		
		case GFM_SETTIMER:
			if (!IsTimerInstalled(hWnd, GetDlgCtrlID(hWnd)))
			{
				PGIFBITMAPELEMENT pitem=NULL;
				
				EbRewindGIF (pgifctrldata->gifData);
				pitem = EbGetCurrentGIFItem(pgifctrldata->gifData);				
				SetTimer(hWnd, GetDlgCtrlID(hWnd), pitem->ctrl.delayTime);
			}
			break;
			
		case GFM_KILLTIMER:
			if (IsTimerInstalled(hWnd, GetDlgCtrlID(hWnd)))
				KillTimer(hWnd, GetDlgCtrlID(hWnd));
			SendMessage(hWnd, MSG_PAINT, 0, 0);
			break;
		
		case MSG_TIMER:
        {
        	if(pgifctrldata->gifData)
        	{
        		PGIFBITMAPELEMENT pitem=NULL;
				int delay, olddelay;
				
				//获得原来的延时
				pitem = EbGetCurrentGIFItem(pgifctrldata->gifData);
				olddelay = pitem->ctrl.delayTime;
				
				hdc = BeginPaint(hWnd);

				pitem=NULL;	
				pitem = EbGetNextGIFItem(pgifctrldata->gifData);
				if (dwStyle & GFS_NOLOOPFIRST)
				{
					if (pitem == pgifctrldata->gifData->first)
						pitem = EbGetNextGIFItem(pgifctrldata->gifData);
				}
				
        	    DrawGIF(hWnd, hdc, &(pitem->Bitmap), 0, pitem->left, pitem->top);

				EndPaint(hWnd, hdc);
				ShowCurrentScreen();
				
				//重设定时器
				delay = pitem->ctrl.delayTime;
				if(delay <= 0)
					delay  = 10;
				
				if (delay != olddelay) 
				{
					#if 1
					ResetTimer(hWnd, GetDlgCtrlID(hWnd), delay);
					#else
					KillTimer(hWnd, GetDlgCtrlID(hWnd));
					SetTimer(hWnd, GetDlgCtrlID(hWnd), delay);
					#endif
				}
        	}
        }
        return 0;
        case MSG_PAINT:
        {
			HDC 		hdc = BeginPaint(hWnd);
			char *		szCaption;
			
			SetBrushColor (hdc, GetWindowBkColor(hWnd));
    		SetBkColor (hdc, GetWindowBkColor(hWnd)); 
			SetBkMode(hdc,BM_TRANSPARENT);
			
			if (pgifctrldata->bkfile)
			{
				char szfile[MAX_PATH];
				
				if (dwStyle & GFS_BKSAVEBITMAP)
				{
					if (pgifctrldata->status & GFSS_FOCUS)
						FillBoxWithBitmap(hdc, 0, 0, 0, 0, &(pgifctrldata->fsbmp));
					else
						FillBoxWithBitmap(hdc, 0, 0, 0, 0, &(pgifctrldata->nmbmp));
				}
				else
				{
					memset(szfile, 0, MAX_PATH);
					if (pgifctrldata->status & GFSS_FOCUS)
						PrefixFileName(pgifctrldata->bkfile, "fs", szfile, MAX_PATH);
					else
						PrefixFileName(pgifctrldata->bkfile, "nm", szfile, MAX_PATH);
					
					if (dwStyle & GFS_BKTRANSIMAGE)
						FillWithPicture(hWnd, hdc, szfile, NULL, BMP_TYPE_ALPHARED, dwStyle&BBS_BKALPHA);
					else if(dwStyle & GFS_BKNOTRANSFILE)			
						FillWithPicture(hWnd, hdc, szfile, NULL, BMP_TYPE_ALPHAVALUE, FALSE);
				}
			}
			
            if(pgifctrldata->gifData)
            {   
            	PGIFBITMAPELEMENT pitem;
				PBITMAP pbmp;
				
				if ((dwStyle & GFS_NOLOOPFIRST) && (pgifctrldata->status & GFSS_FOCUS))
					pitem = pgifctrldata->gifData->first->next;
				else
					pitem = pgifctrldata->gifData->first;
	            pbmp = &(pitem->Bitmap);
				
	            if(pbmp)
	       			DrawGIF(hWnd, hdc, pbmp, 0, pitem->left, pitem->top);
            }

			szCaption = GetWindowCaption(hWnd);
			if (szCaption)
			{
				RECT rect;
				PLOGFONT pfont = GetWindowFont(hWnd);
				
				if (pfont)
					SelectFont (hdc, pfont);
				
				GetClientRect(hWnd, &rect);
				GifPaintText(hdc, szCaption, dwStyle, &rect);
			}
			
			EndPaint (hWnd, hdc);
        }
        break;
        default:
            break;
    }
    return DefaultControlProc (hWnd, message, wParam, lParam);
}