ximainfo.cpp from aMSN at Krugle
Show ximainfo.cpp syntax highlighted
// ximainfo.cpp : main attributes
/* 03/10/2004 v1.00 - Davide Pizzolato - www.xdp.it
* CxImage version 5.99c 17/Oct/2004
*/
#include "ximage.h"
////////////////////////////////////////////////////////////////////////////////
/**
* \return the color used for transparency, and/or for background color
*/
RGBQUAD CxImage::GetTransColor()
{
if (head.biBitCount<24 && info.nBkgndIndex != -1) return GetPaletteColor((BYTE)info.nBkgndIndex);
return info.nBkgndColor;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Gets the index used for transparency. Returns -1 for no transparancy.
*/
long CxImage::GetTransIndex() const
{
return info.nBkgndIndex;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Sets the index used for transparency with 1, 4 and 8 bpp images. Set to -1 to remove the effect.
*/
void CxImage::SetTransIndex(long idx)
{
info.nBkgndIndex = idx;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Sets the color used for transparency with 24 bpp images.
* You must call SetTransIndex(0) to enable the effect, SetTransIndex(-1) to disable it.
*/
void CxImage::SetTransColor(RGBQUAD rgb)
{
rgb.rgbReserved=0;
info.nBkgndColor = rgb;
}
////////////////////////////////////////////////////////////////////////////////
bool CxImage::IsTransparent() const
{
return info.nBkgndIndex>=0; // <vho>
}
////////////////////////////////////////////////////////////////////////////////
/**
* Returns true if the image has 256 colors or less.
*/
bool CxImage::IsIndexed() const
{
return head.biClrUsed!=0;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Sets the method for drawing the frame related to others
*/
void CxImage::SetDisposalMethod(int dm)
{ info.m_dispmeth=dm; }
////////////////////////////////////////////////////////////////////////////////
/**
* Gets the method for drawing the frame related to others
* Values : 0 - No disposal specified. The decoder is
* not required to take any action.
* 1 - Do not dispose. The graphic is to be left
* in place.
* 2 - Restore to background color. The area used by the
* graphic must be restored to the background color.
* 3 - Restore to previous. The decoder is required to
* restore the area overwritten by the graphic with
* what was there prior to rendering the graphic.
* 4-7 - To be defined.
*/
long CxImage::GetDisposalMethod()
{ return info.m_dispmeth; }
////////////////////////////////////////////////////////////////////////////////
/**
* \return 1 = indexed, 2 = RGB, 4 = RGBA
*/
BYTE CxImage::GetColorType()
{
BYTE b = (BYTE)((head.biBitCount>8) ? 2 /*COLORTYPE_COLOR*/ : 1 /*COLORTYPE_PALETTE*/);
#if CXIMAGE_SUPPORT_ALPHA
if (AlphaIsValid()) b = 4 /*COLORTYPE_ALPHA*/;
#endif //CXIMAGE_SUPPORT_ALPHA
return b;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \return Resolution for TIFF, JPEG, PNG and BMP formats.
*/
long CxImage::GetXDPI() const
{
return info.xDPI;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \return Resolution for TIFF, JPEG, PNG and BMP formats.
*/
long CxImage::GetYDPI() const
{
return info.yDPI;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Set resolution for TIFF, JPEG, PNG and BMP formats.
*/
void CxImage::SetXDPI(long dpi)
{
if (dpi<=0) dpi=96;
info.xDPI = dpi;
head.biXPelsPerMeter = (long) floor(dpi * 10000.0 / 254.0 + 0.5);
}
////////////////////////////////////////////////////////////////////////////////
/**
* Set resolution for TIFF, JPEG, PNG and BMP formats.
*/
void CxImage::SetYDPI(long dpi)
{
if (dpi<=0) dpi=96;
info.yDPI = dpi;
head.biYPelsPerMeter = (long) floor(dpi * 10000.0 / 254.0 + 0.5);
}
////////////////////////////////////////////////////////////////////////////////
/**
* \sa SetFlags
*/
DWORD CxImage::GetFlags() const
{
return info.dwFlags;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Image flags, for future use
* \param flags
* - 0x??00000 = reserved for 16 bit, CMYK, multilayer
* - 0x00??0000 = blend modes
* - 0x0000???? = layer id or user flags
*
* \param bLockReservedFlags protects the "reserved" and "blend modes" flags
*/
void CxImage::SetFlags(DWORD flags, bool bLockReservedFlags)
{
if (bLockReservedFlags) info.dwFlags = flags & 0x0000ffff;
else info.dwFlags = flags;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \sa SetCodecOption
*/
DWORD CxImage::GetCodecOption(DWORD imagetype)
{
if (imagetype<CMAX_IMAGE_FORMATS){
if (imagetype==0){
imagetype = GetType();
}
return info.dwCodecOpt[imagetype];
}
return 0;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Encode option for GIF, TIF and JPG.
* - GIF : 0 = LZW (default), 1 = none, 2 = RLE.
* - TIF : 0 = automatic (default), or a valid compression code as defined in "tiff.h" (COMPRESSION_NONE = 1, COMPRESSION_CCITTRLE = 2, ...)
* - JPG : valid values stored in enum CODEC_OPTION ( ENCODE_BASELINE = 0x01, ENCODE_PROGRESSIVE = 0x10, ...)
*
* \return true if everything is ok
*/
bool CxImage::SetCodecOption(DWORD opt, DWORD imagetype)
{
if (imagetype<CMAX_IMAGE_FORMATS){
if (imagetype==0){
imagetype = GetType();
}
info.dwCodecOpt[imagetype] = opt;
return true;
}
return false;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \return internal hDib object..
*/
void* CxImage::GetDIB() const
{
return pDib;
}
////////////////////////////////////////////////////////////////////////////////
DWORD CxImage::GetHeight() const
{
return head.biHeight;
}
////////////////////////////////////////////////////////////////////////////////
DWORD CxImage::GetWidth() const
{
return head.biWidth;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \return DWORD aligned width of the image.
*/
DWORD CxImage::GetEffWidth() const
{
return info.dwEffWidth;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \return 2, 16, 256; 0 for RGB images.
*/
DWORD CxImage::GetNumColors() const
{
return head.biClrUsed;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \return: 1, 4, 8, 24.
*/
WORD CxImage::GetBpp() const
{
return head.biBitCount;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \return original image format
* \sa ENUM_CXIMAGE_FORMATS.
*/
DWORD CxImage::GetType() const
{
return info.dwType;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \return current frame delay in milliseconds. Only for GIF and MNG formats.
*/
DWORD CxImage::GetFrameDelay() const
{
return info.dwFrameDelay;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Sets current frame delay. Only for GIF format.
* \param d = delay in milliseconds
*/
void CxImage::SetFrameDelay(DWORD d)
{
info.dwFrameDelay=d;
}
////////////////////////////////////////////////////////////////////////////////
void CxImage::GetOffset(long *x,long *y)
{
*x=info.xOffset;
*y=info.yOffset;
}
////////////////////////////////////////////////////////////////////////////////
void CxImage::SetOffset(long x,long y)
{
info.xOffset=x;
info.yOffset=y;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \sa SetJpegQuality
*/
BYTE CxImage::GetJpegQuality() const
{
return info.nQuality;
}
////////////////////////////////////////////////////////////////////////////////
/**
* quality level for JPEG and JPEG2000
* \param q: can be from 0 to 100
*/
void CxImage::SetJpegQuality(BYTE q){
info.nQuality = q;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \sa SetJpegScale
*/
BYTE CxImage::GetJpegScale() const
{
return info.nJpegScale;
}
////////////////////////////////////////////////////////////////////////////////
/**
* scaling down during JPEG decoding valid numbers are 1, 2, 4, 8
* \author [ignacio]
*/
void CxImage::SetJpegScale(BYTE q){
info.nJpegScale = q;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Used to monitor the slow loops.
* \return value is from 0 to 100.
* \sa SetProgress
*/
long CxImage::GetProgress() const
{
return info.nProgress;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \return the escape code.
* \sa SetEscape
*/
long CxImage::GetEscape() const
{
return info.nEscape;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Forces the value of the internal progress variable.
* \param p should be from 0 to 100.
* \sa GetProgress
*/
void CxImage::SetProgress(long p)
{
info.nProgress = p;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Used to quit the slow loops or the codecs.
* - SetEscape(-1) before Decode forces the function to exit, right after
* the image width and height are available ( for bmp, jpg, gif, tif )
*/
void CxImage::SetEscape(long i)
{
info.nEscape = i;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Checks if the image is correctly initializated.
*/
bool CxImage::IsValid() const
{
return pDib!=0;
}
////////////////////////////////////////////////////////////////////////////////
/**
* True if the image is enabled for painting.
*/
bool CxImage::IsEnabled() const
{
return info.bEnabled;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Enables/disables the image.
*/
void CxImage::Enable(bool enable)
{
info.bEnabled=enable;
}
////////////////////////////////////////////////////////////////////////////////
/**
* This function must be used after a Decode() / Load() call.
* Use the sequence SetFrame(-1); Load(...); GetNumFrames();
* to get the number of images without loading the first image.
* \return the number of images in the file.
*/
long CxImage::GetNumFrames() const
{
return info.nNumFrames;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \return the current selected image (zero-based index).
*/
long CxImage::GetFrame() const
{
return info.nFrame;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Sets the image number that the next Decode() / Load() call will load
*/
void CxImage::SetFrame(long nFrame){
info.nFrame=nFrame;
}
CxImage * CxImage::GetFrameNo(long nFrame) const {
if (info.GifFrames && nFrame <= info.nNumFrames && info.GifFrames[nFrame]) {
return info.GifFrames[nFrame];
}
return (CxImage * const)this;
}
void CxImage::RetreiveAllFrame() {
info.bGetAllFrames = true;
}
void CxImage::RetreiveSingleFrame() {
info.bGetAllFrames = false;
}
////////////////////////////////////////////////////////////////////////////////
/**
* Returns the last reported error.
*/
const char* CxImage::GetLastError()
{
return info.szLastError;
}
////////////////////////////////////////////////////////////////////////////////
/**
* \return A.BBCCCDDDD
* - A = main version
* - BB = main revision
* - CCC = minor revision (letter)
* - DDDD = experimental revision
*/
const float CxImage::GetVersionNumber()
{
return 5.99003f;
}
////////////////////////////////////////////////////////////////////////////////
const TCHAR* CxImage::GetVersion()
{
static const TCHAR CxImageVersion[] = _T("CxImage 5.99c");
return (CxImageVersion);
}
////////////////////////////////////////////////////////////////////////////////
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