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Revised api

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kipp%netscape.com 1999-04-13 21:49:01 +00:00
parent 83689cb3b4
commit 43f8bcd459
1 changed files with 34 additions and 23 deletions
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57
layout/base/public/nsIFrameImageLoader.h
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@ -19,8 +19,9 @@
#define nsIFrameImageLoader_h___
#include "nslayout.h"
#include "nsIImageObserver.h"
#include "nsISupports.h"
#include "nsColor.h"
class nsIFrame;
class nsIImage;
class nsIImageGroup;
@ -28,17 +29,19 @@ class nsIPresContext;
class nsString;
struct nsSize;
/* a9970300-e918-11d1-89cc-006008911b81 */
/* a6cf90ec-15b3-11d2-932e-00805f8add32 */
#define NS_IFRAME_IMAGE_LOADER_IID \
{ 0xa9970300,0xe918,0x11d1,{0x89, 0xcc, 0x00, 0x60, 0x08, 0x91, 0x1b, 0x81} }
{ 0xa6cf90ec, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
// Type of callback function used during image loading. The frame
// image loader will invoke this callback as notifications occur from
// the image library.
typedef nsresult (*nsFrameImageLoaderCB)(nsIPresContext& aPresContext,
nsIFrame* aFrame,
PRIntn aStatus);
class nsIFrameImageLoader;
typedef nsresult (*nsIFrameImageLoaderCB)(nsIPresContext* aPresContext,
nsIFrameImageLoader* aLoader,
nsIFrame* aFrame,
void* aClosure,
PRUint32 aStatus);
/**
* Abstract interface for frame image loaders. Frame image loaders
@ -46,39 +49,47 @@ typedef nsresult (*nsFrameImageLoaderCB)(nsIPresContext& aPresContext,
* generate the appropriate rendering/reflow operation for a target
* frame.
*/
class nsIFrameImageLoader : public nsIImageRequestObserver {
class nsIFrameImageLoader : public nsISupports {
public:
NS_IMETHOD Init(nsIPresContext* aPresContext,
nsIImageGroup* aGroup,
const nsString& aURL,
const nscolor* aBackgroundColor,
nsIFrame* aTargetFrame,
const nsSize& aDesiredSize,
nsFrameImageLoaderCB aCallBack,
PRBool aNeedSizeUpdate,
PRBool aNeedErrorNotification) = 0;
const nsSize* aDesiredSize,
nsIFrame* aFrame,
nsIFrameImageLoaderCB aCallBack,
void* aClosure) = 0;
NS_IMETHOD StopImageLoad() = 0;
NS_IMETHOD AbortImageLoad() = 0;
NS_IMETHOD GetTargetFrame(nsIFrame*& aFrameResult) const = 0;
NS_IMETHOD IsSameImageRequest(const nsString& aURL,
const nscolor* aBackgroundColor,
const nsSize* aDesiredSize,
PRBool* aResult) = 0;
NS_IMETHOD GetURL(nsString& aResult) const = 0;
NS_IMETHOD AddFrame(nsIFrame* aFrame, nsIFrameImageLoaderCB aCallBack,
void* aClosure) = 0;
NS_IMETHOD GetImage(nsIImage*& aResult) const = 0;
NS_IMETHOD RemoveFrame(nsIFrame* aFrame) = 0;
NS_IMETHOD GetSize(nsSize& aResult) const = 0;
NS_IMETHOD SafeToDestroy(PRBool* aResult) = 0;
NS_IMETHOD GetImageLoadStatus(PRIntn& aLoadStatus) const = 0;
NS_IMETHOD GetURL(nsString& aResult) = 0;
NS_IMETHOD GetImage(nsIImage** aResult) = 0;
// Return the size of the image, in twips
NS_IMETHOD GetSize(nsSize& aResult) = 0;
NS_IMETHOD GetImageLoadStatus(PRUint32* aLoadStatus) = 0;
};
// Image load status bit values
#define NS_IMAGE_LOAD_STATUS_NONE 0x0
#define NS_IMAGE_LOAD_STATUS_SIZE_REQUESTED 0x1
#define NS_IMAGE_LOAD_STATUS_SIZE_AVAILABLE 0x2
#define NS_IMAGE_LOAD_STATUS_IMAGE_READY 0x4
#define NS_IMAGE_LOAD_STATUS_ERROR 0x8
#define NS_IMAGE_LOAD_STATUS_ERROR_REQUESTED 0x10
#define NS_IMAGE_LOAD_STATUS_SIZE_AVAILABLE 0x1
#define NS_IMAGE_LOAD_STATUS_IMAGE_READY 0x2
#define NS_IMAGE_LOAD_STATUS_ERROR 0x4
#endif /* nsIFrameImageLoader_h___ */