mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 22:25:30 +00:00
236 lines
7.5 KiB
C++
236 lines
7.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
#ifndef nsIImage_h___
|
|
#define nsIImage_h___
|
|
|
|
#include "nsISupports.h"
|
|
#include "nsRect.h"
|
|
#include "nsIRenderingContext.h"
|
|
|
|
typedef struct
|
|
{
|
|
//I lifted this from the image lib. The difference is that
|
|
//this uses nscolor instead of NI_RGB. Multiple color pollution
|
|
//is a bad thing. MMP
|
|
PRInt32 NumColors; // Number of colors in the colormap.
|
|
// A negative value can be used to denote a
|
|
// possibly non-unique set.
|
|
//nscolor *Map; // Colormap colors.
|
|
PRUint8 *Index; // NULL, if map is in index order, otherwise
|
|
// specifies the indices of the map entries. */
|
|
} nsColorMap;
|
|
|
|
typedef enum {
|
|
nsMaskRequirements_kNoMask,
|
|
nsMaskRequirements_kNeeds1Bit,
|
|
nsMaskRequirements_kNeeds8Bit
|
|
} nsMaskRequirements;
|
|
|
|
|
|
#define nsImageUpdateFlags_kColorMapChanged 0x1
|
|
#define nsImageUpdateFlags_kBitsChanged 0x2
|
|
|
|
// IID for the nsIImage interface
|
|
#define NS_IIMAGE_IID \
|
|
{ 0x0b4faaa0, 0xaa3a, 0x11d1, \
|
|
{ 0xa8, 0x24, 0x00, 0x40, 0x95, 0x9a, 0x28, 0xc9 } }
|
|
|
|
// Interface to Images
|
|
class nsIImage : public nsISupports
|
|
{
|
|
|
|
public:
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IIMAGE_IID)
|
|
|
|
/**
|
|
* Build and initialize the nsIImage
|
|
* @param aWidth The width in pixels of the desired pixelmap
|
|
* @param aHeight The height in pixels of the desired pixelmap
|
|
* @param aDepth The number of bits per pixel for the pixelmap
|
|
* @param aMaskRequirements A flag indicating if a alpha mask should be allocated
|
|
*/
|
|
virtual nsresult Init(PRInt32 aWidth, PRInt32 aHeight, PRInt32 aDepth, nsMaskRequirements aMaskRequirements) = 0;
|
|
|
|
/**
|
|
* Get the number of bytes per pixel for this image
|
|
* @update - dwc 2/3/99
|
|
* @return - the number of bytes per pixel
|
|
*/
|
|
virtual PRInt32 GetBytesPix() = 0;
|
|
|
|
/**
|
|
* Get whether rows are organized top to bottom, or bottom to top
|
|
* @update - syd 3/29/99
|
|
* @return PR_TRUE if top to bottom, else PR_FALSE
|
|
*/
|
|
virtual PRBool GetIsRowOrderTopToBottom() = 0;
|
|
|
|
/**
|
|
* Get the width for the pixelmap
|
|
* @update - dwc 2/1/99
|
|
* @return The width in pixels for the pixelmap
|
|
*/
|
|
virtual PRInt32 GetWidth() = 0;
|
|
|
|
/**
|
|
* Get the height for the pixelmap
|
|
* @update - dwc 2/1/99
|
|
* @return The height in pixels for the pixelmap
|
|
*/
|
|
virtual PRInt32 GetHeight() = 0;
|
|
|
|
/**
|
|
* Get a pointer to the bits for the pixelmap, only if it is not optimized
|
|
* @update - dwc 2/1/99
|
|
* @return address of the DIB pixel array
|
|
*/
|
|
virtual PRUint8 * GetBits() = 0;
|
|
|
|
/**
|
|
* Get the number of bytes needed to get to the next scanline for the pixelmap
|
|
* @update - dwc 2/1/99
|
|
@return The number of bytes in each scanline
|
|
*/
|
|
virtual PRInt32 GetLineStride() = 0;
|
|
|
|
/**
|
|
* Get a pointer to the bits for the alpha mask
|
|
* @update - dwc 2/1/99
|
|
* @return address of the alpha mask pixel array
|
|
*/
|
|
virtual PRUint8 * GetAlphaBits() = 0;
|
|
|
|
/**
|
|
* Get the width of the alpha mask
|
|
* @update - dwc 2/1/99
|
|
* @return The width in pixels
|
|
*/
|
|
virtual PRInt32 GetAlphaWidth() = 0;
|
|
|
|
/**
|
|
* Get the height of the alpha mask
|
|
* @update - dwc 2/1/99
|
|
* @return The width in pixels
|
|
*/
|
|
virtual PRInt32 GetAlphaHeight() = 0;
|
|
|
|
/**
|
|
* Get the number of bytes per scanline for the alpha mask
|
|
* @update - dwc 2/1/99
|
|
* @return The number of bytes in each scanline
|
|
*/
|
|
virtual PRInt32 GetAlphaLineStride() = 0;
|
|
|
|
/**
|
|
* Update the nsIImage color table
|
|
* @update - dwc 2/1/99
|
|
* @param aFlags Used to pass in parameters for the update
|
|
* @param aUpdateRect The rectangle to update
|
|
*/
|
|
virtual void ImageUpdated(nsIDeviceContext *aContext, PRUint8 aFlags, nsRect *aUpdateRect) = 0;
|
|
|
|
/**
|
|
* Returns if the pixelmap has been converted to an optimized pixelmap
|
|
* @update - dwc 2/1/99
|
|
* @return If true, it is optimized
|
|
*/
|
|
virtual PRBool IsOptimized() = 0;
|
|
|
|
/**
|
|
* Converted this pixelmap to an optimized pixelmap for the device
|
|
* @update - dwc 2/1/99
|
|
* @param aContext The device to optimize for
|
|
* @return the result of the operation, if NS_OK, then the pixelmap is optimized
|
|
*/
|
|
virtual nsresult Optimize(nsIDeviceContext* aContext) = 0;
|
|
|
|
/**
|
|
* Get the colormap for the nsIImage
|
|
* @update - dwc 2/1/99
|
|
* @return if non null, the colormap for the pixelmap,otherwise the image is not color mapped
|
|
*/
|
|
virtual nsColorMap * GetColorMap() = 0;
|
|
|
|
/**
|
|
* BitBlit the nsIImage to a device, the source can be scaled to the dest
|
|
* @update - dwc 2/1/99
|
|
* @param aSurface the surface to blit to
|
|
* @param aX The destination horizontal location
|
|
* @param aY The destination vertical location
|
|
* @param aWidth The destination width of the pixelmap
|
|
* @param aHeight The destination height of the pixelmap
|
|
* @return if TRUE, no errors
|
|
*/
|
|
NS_IMETHOD Draw(nsIRenderingContext &aContext, nsDrawingSurface aSurface, PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight) = 0;
|
|
|
|
/**
|
|
* BitBlit the nsIImage to a device, the source and dest can be scaled
|
|
* @update - dwc 2/1/99
|
|
* @param aSurface the surface to blit to
|
|
* @param aSX The source width of the pixelmap
|
|
* @param aSY The source vertical location
|
|
* @param aSWidth The source width of the pixelmap
|
|
* @param aSHeight The source height of the pixelmap
|
|
* @param aDX The destination horizontal location
|
|
* @param aDY The destination vertical location
|
|
* @param aDWidth The destination width of the pixelmap
|
|
* @param aDHeight The destination height of the pixelmap
|
|
* @return if TRUE, no errors
|
|
*/
|
|
NS_IMETHOD Draw(nsIRenderingContext &aContext, nsDrawingSurface aSurface, PRInt32 aSX, PRInt32 aSY, PRInt32 aSWidth, PRInt32 aSHeight,
|
|
PRInt32 aDX, PRInt32 aDY, PRInt32 aDWidth, PRInt32 aDHeight) = 0;
|
|
|
|
/**
|
|
* Set the alpha level for the image
|
|
* @update - dwc 2/1/99
|
|
* @param the alpha level to set for the image, from 0 to 100%
|
|
*/
|
|
virtual void SetAlphaLevel(PRInt32 aAlphaLevel) = 0;
|
|
|
|
/**
|
|
* Get the alpha level for the image
|
|
* @update - dwc 2/1/99
|
|
* @return the alpha level for the image, from 0 to 100%
|
|
*/
|
|
virtual PRInt32 GetAlphaLevel() = 0;
|
|
|
|
/**
|
|
* Return information about the bits for this structure
|
|
* @update - dwc 2/1/99
|
|
* @return a bitmap info structure for the Device Dependent Bits
|
|
*/
|
|
virtual void* GetBitInfo() = 0;
|
|
|
|
//get the color space metrics for this image
|
|
//virtual NI_ColorSpec * GetColorSpec() = 0; fix
|
|
|
|
//get the color which should be considered transparent.
|
|
//if this image is color mapped, this value will be an
|
|
//index into the color map. hokey? yes, but it avoids
|
|
//another silly api or struct.
|
|
//virtual nscolor GetTransparentColor() = 0; fix.
|
|
};
|
|
|
|
//change notification API flag bits
|
|
#define NS_IMAGE_UPDATE_COLORMAP 1
|
|
#define NS_IMAGE_UPDATE_PIXELS 2
|
|
#define NS_IMAGE_UPDATE_ALPHA 4
|
|
|
|
#endif
|