X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7a632f1056d7894daca7342394c1db9b61f6aecf..80d2803f703d1b238f42725504f08266ef02defe:/docs/latex/wx/image.tex diff --git a/docs/latex/wx/image.tex b/docs/latex/wx/image.tex index f913b2b6ba..84f08f2df6 100644 --- a/docs/latex/wx/image.tex +++ b/docs/latex/wx/image.tex @@ -18,7 +18,7 @@ creation of a \helpref{wxMask}{wxmask} object associated to the bitmap object. The following image handlers are available. {\bf wxBMPHandler} is always installed by default. To use other image formats, install the appropiate -handler with \helpref{wxImage::AddHandler}{wximageaddhandler} or +handler with \helpref{wxImage::AddHandler}{wximageaddhandler} or \helpref{wxInitAllImageHandlers}{wxinitallimagehandlers}. \twocolwidtha{5cm}% @@ -29,7 +29,7 @@ handler with \helpref{wxImage::AddHandler}{wximageaddhandler} or \twocolitem{{\bf \indexit{wxGIFHandler}}}{Only for loading, due to legal issues.} \twocolitem{{\bf \indexit{wxPCXHandler}}}{For loading and saving (see below).} \twocolitem{{\bf \indexit{wxPNMHandler}}}{For loading and saving (see below).} -\twocolitem{{\bf \indexit{wxTIFFHandler}}}{For loading and saving.} +\twocolitem{{\bf \indexit{wxTIFFHandler}}}{For loading.} \end{twocollist} When saving in PCX format, {\bf wxPCXHandler} will count the number of @@ -74,6 +74,13 @@ and forth without loss in that respect. Creates an image with the given width and height. +\func{}{wxImage}{\param{int}{ width}, \param{int}{ height}, \param{unsigned char*}{ data}, \param{bool}{ static_data=FALSE}} + +Creates an image from given data with the given width and height. If +{\it static_data} is TRUE, then wxImage will not delete the actual +image data in its destructor, otherwise it will free it by calling +{\it free()}. + \func{}{wxImage}{\param{const wxString\& }{name}, \param{long}{ type = wxBITMAP\_TYPE\_ANY}} \func{}{wxImage}{\param{const wxString\& }{name}, \param{const wxString\&}{ mimetype}} @@ -116,8 +123,8 @@ Loads an image from an input stream. Depending on how wxWindows has been configured, not all formats may be available. -Note : any handler other than BMP must be previously -initialized with \helpref{wxImage::AddHandler}{wximageaddhandler} or +Note: any handler other than BMP must be previously +initialized with \helpref{wxImage::AddHandler}{wximageaddhandler} or \helpref{wxInitAllImageHandlers}{wxinitallimagehandlers}. \wxheading{See also} @@ -180,6 +187,16 @@ on program start-up to look up colors. This ensures a very fast conversion, but the image quality won't be perfect (and could be better for photo images using more sophisticated dithering algorithms). +On Windows, if there is a palette present (set with SetPalette), it will be used when +creating the wxBitmap (most useful in 8-bit display mode). On other platforms, +the palette is currently ignored. + +\membersection{wxImage::Copy}\label{wximagecopy} + +\constfunc{wxImage}{Copy}{\void} + +Returns an identical copy of the image. + \membersection{wxImage::Create}\label{wximagecreate} \func{bool}{Create}{\param{int}{ width}, \param{int}{ height}} @@ -296,6 +313,15 @@ Gets the green value of the mask colour. Gets the red value of the mask colour. +\membersection{wxImage::GetPalette}\label{wximagegetpalette} + +\constfunc{const wxPalette\&}{GetPalette}{\void} + +Returns the palette associated with the image. Currently the palette is only +used in ConvertToBitmap under Windows. + +Eventually wxImage handlers will set the palette if one exists in the image file. + \membersection{wxImage::GetSubImage}\label{wximagegetsubimage} \constfunc{wxImage}{GetSubImage}{\param{const wxRect\&}{ rect}} @@ -319,6 +345,45 @@ Gets the width of the image in pixels. Returns TRUE if there is a mask active, FALSE otherwise. +\membersection{wxImage::GetOption}\label{wximagegetoption} + +\constfunc{wxString}{GetOption}{\param{const wxString\&}{ name}} + +Gets a user-defined option. The function is case-insensitive to {\it name}. + +For example, when saving as a JPEG file, the option {\bf quality} is +used, which is a number between 0 and 100 (0 is terrible, 100 is very good). + +\wxheading{See also} + +\helpref{wxImage::SetOption}{wximagesetoption},\rtfsp +\helpref{wxImage::GetOptionInt}{wximagegetoptionint},\rtfsp +\helpref{wxImage::HasOption}{wximagehasoption} + +\membersection{wxImage::GetOptionInt}\label{wximagegetoptionint} + +\constfunc{int}{GetOptionInt}{\param{const wxString\&}{ name}} + +Gets a user-defined option as an integer. The function is case-insensitive to {\it name}. + +\wxheading{See also} + +\helpref{wxImage::SetOption}{wximagesetoption},\rtfsp +\helpref{wxImage::GetOption}{wximagegetoption},\rtfsp +\helpref{wxImage::HasOption}{wximagehasoption} + +\membersection{wxImage::HasOption}\label{wximagehasoption} + +\constfunc{bool}{HasOption}{\param{const wxString\&}{ name}} + +Returns TRUE if the given option is present. The function is case-insensitive to {\it name}. + +\wxheading{See also} + +\helpref{wxImage::SetOption}{wximagesetoption},\rtfsp +\helpref{wxImage::GetOption}{wximagegetoption},\rtfsp +\helpref{wxImage::GetOptionInt}{wximagegetoptionint} + \membersection{wxImage::InitStandardHandlers} \func{static void}{InitStandardHandlers}{\void} @@ -331,7 +396,7 @@ the user. \wxheading{See also} -\helpref{wxImageHandler}{wximagehandler} +\helpref{wxImageHandler}{wximagehandler}, \helpref{wxInitAllImageHandlers}{wxinitallimagehandlers} \membersection{wxImage::InsertHandler} @@ -458,7 +523,6 @@ Saves a image in the given stream. \twocolitem{{\bf wxBITMAP\_TYPE\_PNG}}{Save a PNG image file.} \twocolitem{{\bf wxBITMAP\_TYPE\_PCX}}{Save a PCX image file (tries to save as 8-bit if possible, falls back to 24-bit otherwise).} \twocolitem{{\bf wxBITMAP\_TYPE\_PNM}}{Save a PNM image file (as raw RGB always).} -\twocolitem{{\bf wxBITMAP\_TYPE\_TIF}}{Save a TIFF image file.} \end{twocollist}} \docparam{mimetype}{MIME type.} @@ -485,6 +549,13 @@ mimetype to the named file} \end{twocollist}} } +\membersection{wxImage::Mirror}\label{wximagemirror} + +\constfunc{wxImage}{Mirror}{\param{bool}{ horizontally = TRUE}} + +Returns a mirrored copy of the image. The parameter {\it horizontally} +indicates the orientation. + \membersection{wxImage::Replace}\label{wximagereplace} \func{void}{Replace}{\param{unsigned char}{ r1}, \param{unsigned char}{ g1}, \param{unsigned char}{ b1}, @@ -505,16 +576,25 @@ Returns the (modified) image itself. \helpref{Scale}{wximagescale} -\membersection{wxImage::Rotate}\label{wximagererotate} +\membersection{wxImage::Rotate}\label{wximagerotate} \func{wxImage}{Rotate}{\param{double}{ angle}, \param{const wxPoint\& }{rotationCentre}, \param{bool}{ interpolating = TRUE}, \param{wxPoint*}{ offsetAfterRotation = NULL}} Rotates the image about the given point, by {\it angle} radians. Passing TRUE -to {\it interpolating} results in better image quality, but is slower. +to {\it interpolating} results in better image quality, but is slower. If the +image has a mask, then the mask colour is used for the uncovered pixels in the +rotated image background. Else, black (rgb 0, 0, 0) will be used. Returns the rotated image, leaving this image intact. +\membersection{wxImage::Rotate90}\label{wximagerotate90} + +\constfunc{wxImage}{Rotate90}{\param{bool}{ clockwise = TRUE}} + +Returns a copy of the image rotated 90 degrees in the direction +indicated by {\it clockwise}. + \membersection{wxImage::Scale}\label{wximagescale} \constfunc{wxImage}{Scale}{\param{int}{ width}, \param{int}{ height}} @@ -524,7 +604,7 @@ scaling bitmaps in general as the only other way to scale bitmaps is to blit a wxMemoryDC into another wxMemoryDC. It may be mentioned that the GTK port uses this function internally -to scale bitmaps when using mapping mode in wxDC. +to scale bitmaps when using mapping modes in wxDC. Example: @@ -569,9 +649,33 @@ Specifies whether there is a mask or not. The area of the mask is determined by Sets the mask colour for this image (and tells the image to use the mask). +\membersection{wxImage::SetOption}\label{wximagesetoption} + +\func{void}{SetOption}{\param{const wxString\&}{ name}, \param{const wxString\&}{ value}} + +\func{void}{SetOption}{\param{const wxString\&}{ name}, \param{int}{ value}} + +Sets a user-defined option. The function is case-insensitive to {\it name}. + +For example, when saving as a JPEG file, the option {\bf quality} is +used, which is a number between 0 and 100 (0 is terrible, 100 is very good). + +\wxheading{See also} + +\helpref{wxImage::GetOption}{wximagegetoption},\rtfsp +\helpref{wxImage::GetOptionInt}{wximagegetoptionint},\rtfsp +\helpref{wxImage::HasOption}{wximagehasoption} + +\membersection{wxImage::SetPalette}\label{wximagesetpalette} + +\func{void}{SetPalette}{\param{const wxPalette\&}{ palette}} + +Associates a palette with the image. The palette may be used in ConvertToBitmap (MSW only at present) +or in file save operations (none as yet). + \membersection{wxImage::SetRGB}\label{wximagesetrgb} -\func{void}{SetRGB}{\param{int }{x}, \param{int }{y}, \param{unsigned char }{red}, \param{unsigned char }{blue}, \param{unsigned char }{green}} +\func{void}{SetRGB}{\param{int }{x}, \param{int }{y}, \param{unsigned char }{red}, \param{unsigned char }{green}, \param{unsigned char }{blue}} Sets the pixel at the given coordinate. This routine performs bounds-checks for the coordinate so it can be considered a safe way to manipulate the @@ -651,7 +755,7 @@ created by IJG.) \wxheading{See also} -\helpref{wxImage}{wximage} +\helpref{wxImage}{wximage}, \helpref{wxInitAllImageHandlers}{wxinitallimagehandlers} \latexignore{\rtfignore{\wxheading{Members}}} @@ -731,8 +835,8 @@ TRUE if the operation succeeded, FALSE otherwise. \wxheading{See also} -\helpref{wxImage::LoadFile}{wximageloadfile}\\ -\helpref{wxImage::SaveFile}{wximagesavefile}\\ +\helpref{wxImage::LoadFile}{wximageloadfile}, +\helpref{wxImage::SaveFile}{wximagesavefile}, \helpref{wxImageHandler::SaveFile}{wximagehandlersavefile} \membersection{wxImageHandler::SaveFile}\label{wximagehandlersavefile} @@ -753,8 +857,8 @@ TRUE if the operation succeeded, FALSE otherwise. \wxheading{See also} -\helpref{wxImage::LoadFile}{wximageloadfile}\\ -\helpref{wxImage::SaveFile}{wximagesavefile}\\ +\helpref{wxImage::LoadFile}{wximageloadfile}, +\helpref{wxImage::SaveFile}{wximagesavefile}, \helpref{wxImageHandler::LoadFile}{wximagehandlerloadfile} \membersection{wxImageHandler::SetName} @@ -777,24 +881,23 @@ Sets the handler extension. \docparam{extension}{Handler extension.} -\membersection{wxImageHandler::SetType} +\membersection{wxImageHandler::SetMimeType}\label{wximagehandlersetmimetype} -\func{void}{SetType}{\param{long }{type}} +\func{void}{SetMimeType}{\param{const wxString\& }{mimetype}} -Sets the handler type. +Sets the handler MIME type. \wxheading{Parameters} -\docparam{name}{Handler type.} - +\docparam{mimename}{Handler MIME type.} -\membersection{wxImageHandler::SetMimeType} +\membersection{wxImageHandler::SetType} -\func{void}{SetMimeType}{\param{const wxString\& }{mimetype}} +\func{void}{SetType}{\param{long }{type}} -Sets the handler MIME type. +Sets the handler type. \wxheading{Parameters} -\docparam{mimename}{Handler MIME type.} +\docparam{name}{Handler type.}