Image docs updates

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5648 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/docs/latex/wx/image.tex b/docs/latex/wx/image.tex
index 6199e3ec2d4041b4de53710360853559334583ed..b77ec8f799e0b30f194088a7b9e30584d8f8ca83 100644 (file)
--- a/docs/latex/wx/image.tex
+++ b/docs/latex/wx/image.tex
@@ -29,6 +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{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.}

 \end{twocollist}
 
 When saving in PCX format, {\bf wxPCXHandler} will count the number of
 \end{twocollist}
 
 When saving in PCX format, {\bf wxPCXHandler} will count the number of


@@ -91,32 +92,33 @@ Loads an image from an input stream.
 
 \docparam{height}{Specifies the height of the image.}
 
 
 \docparam{height}{Specifies the height of the image.}
 

-\docparam{name}{This refers to an image filename. Its meaning is determined by the {\it type} parameter.}
+\docparam{name}{Name of the file from which to load the image.}

 
 

-\docparam{stream}{This refers to an input stream. Its meaning is determined by the {\it type} parameter. It is equal to loading from file except that you provide opened stream (file, HTTP or any other custom class).}
+\docparam{stream}{Opened input stream from which to load the image. Currently, the stream must support seeking.}

 
 \docparam{type}{May be one of the following:
 
 \twocolwidtha{5cm}%
 \begin{twocollist}
 \twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_BMP}}}{Load a Windows bitmap file.}
 
 \docparam{type}{May be one of the following:
 
 \twocolwidtha{5cm}%
 \begin{twocollist}
 \twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_BMP}}}{Load a Windows bitmap file.}

-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_PNG}}}{Load a PNG bitmap file.}
-\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_JPEG}}}{Load a JPEG bitmap file.}

 \twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_GIF}}}{Load a GIF bitmap file.}
 \twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_GIF}}}{Load a GIF bitmap file.}

+\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_JPEG}}}{Load a JPEG bitmap file.}
+\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_PNG}}}{Load a PNG bitmap file.}

 \twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_PCX}}}{Load a PCX bitmap file.}
 \twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_PNM}}}{Load a PNM bitmap file.}
 \twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_PCX}}}{Load a PCX bitmap file.}
 \twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_PNM}}}{Load a PNM bitmap file.}

+\twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_TIF}}}{Load a TIFF bitmap file.}

 \twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_ANY}}}{Will try to autodetect the format.}
 \twocolitem{{\bf \indexit{wxBITMAP\_TYPE\_ANY}}}{Will try to autodetect the format.}

-\end{twocollist}
-
-The validity of these flags depends on the platform and wxWindows configuration.
-If all possible wxWindows settings are used, the loading a BMP (Windows bitmap) file,
-a PNG (portable network graphics) file and a JPEG file is supported on all platforms that
-implement wxImage.}
+\end{twocollist}}

 
 \docparam{mimetype}{MIME type string (for example 'image/jpeg')}
 
 
 \docparam{mimetype}{MIME type string (for example 'image/jpeg')}
 

-Note : you must call wxImage::AddHandler(new wxJPEGHandler) during application
-initialization in order to work with JPEGs.
+\wxheading{Remarks}
+
+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
+\helpref{wxInitAllImageHandlers}{wxinitallimagehandlers}.

 
 \wxheading{See also}
 
 
 \wxheading{See also}
 


@@ -322,7 +324,7 @@ Returns TRUE if there is a mask active, FALSE otherwise.
 \func{static void}{InitStandardHandlers}{\void}
 
 Internal use only. Adds standard image format handlers. It only install BMP
 \func{static void}{InitStandardHandlers}{\void}
 
 Internal use only. Adds standard image format handlers. It only install BMP

-for the time being, which is use by wxBitmap.
+for the time being, which is used by wxBitmap.

 
 This function is called by wxWindows on startup, and shouldn't be called by
 the user.
 
 This function is called by wxWindows on startup, and shouldn't be called by
 the user.


@@ -352,7 +354,7 @@ of a given handler class in an application session.}
 \func{bool}{LoadFile}{\param{const wxString\&}{ name}, \param{const wxString\&}{ mimetype}}
 
 Loads an image from a file. If no handler type is provided, the library will
 \func{bool}{LoadFile}{\param{const wxString\&}{ name}, \param{const wxString\&}{ mimetype}}
 
 Loads an image from a file. If no handler type is provided, the library will

-try to use wxBITMAP\_TYPE\_BMP.
+try to autodetect the format.

 
 \func{bool}{LoadFile}{\param{wxInputStream\&}{ stream}, \param{long}{ type}}
 
 
 \func{bool}{LoadFile}{\param{wxInputStream\&}{ stream}, \param{long}{ type}}
 


@@ -362,11 +364,9 @@ Loads an image from an input stream.
 
 \wxheading{Parameters}
 
 
 \wxheading{Parameters}
 

-\docparam{name}{A filename.
-The meaning of {\it name} is determined by the {\it type} parameter.}
+\docparam{name}{Name of the file from which to load the image.}

 
 

-\docparam{stream}{An input stream.
-The meaning of {\it stream} data is determined by the {\it type} parameter.}
+\docparam{stream}{Opened input stream from which to load the image. Currently, the stream must support seeking.}

 
 \docparam{type}{One of the following values:
 
 
 \docparam{type}{One of the following values:
 


@@ -374,17 +374,20 @@ The meaning of {\it stream} data is determined by the {\it type} parameter.}
 \begin{twocollist}
 \twocolitem{{\bf wxBITMAP\_TYPE\_BMP}}{Load a Windows image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_GIF}}{Load a GIF image file.}
 \begin{twocollist}
 \twocolitem{{\bf wxBITMAP\_TYPE\_BMP}}{Load a Windows image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_GIF}}{Load a GIF image file.}

-\twocolitem{{\bf wxBITMAP\_TYPE\_TIF}}{Load a TIFF image file.}

 \twocolitem{{\bf wxBITMAP\_TYPE\_JPEG}}{Load a JPEG image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_PCX}}{Load a PCX image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_PNG}}{Load a PNG image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_PNM}}{Load a PNM image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_JPEG}}{Load a JPEG image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_PCX}}{Load a PCX image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_PNG}}{Load a PNG image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_PNM}}{Load a PNM image file.}

-\end{twocollist}
-
-The validity of these flags depends on the platform and wxWindows configuration.}
+\twocolitem{{\bf wxBITMAP\_TYPE\_TIF}}{Load a TIFF image file.}
+\twocolitem{{\bf wxBITMAP\_TYPE\_ANY}}{Will try to autodetect the format.}
+\end{twocollist}}

 
 \docparam{mimetype}{MIME type string (for example 'image/jpeg')}
 
 
 \docparam{mimetype}{MIME type string (for example 'image/jpeg')}
 

+\wxheading{Remarks}
+
+Depending on how wxWindows has been configured, not all formats may be available.
+

 \wxheading{Return value}
 
 TRUE if the operation succeeded, FALSE otherwise.
 \wxheading{Return value}
 
 TRUE if the operation succeeded, FALSE otherwise.


@@ -443,21 +446,20 @@ Saves a image in the given stream.
 
 \wxheading{Parameters}
 
 
 \wxheading{Parameters}
 

-\docparam{name}{A filename. The meaning of {\it name} is determined by the {\it type} parameter.}
+\docparam{name}{Name of the file to save the image to.}

 
 

-\docparam{stream}{An output stream. The meaning of {\it stream} is determined by the {\it type} parameter.}
+\docparam{stream}{Opened output stream to save the image to.}

 
 \docparam{type}{Currently three types can be used:
 
 \twocolwidtha{5cm}%
 \begin{twocollist}
 
 \docparam{type}{Currently three types can be used:
 
 \twocolwidtha{5cm}%
 \begin{twocollist}

-\twocolitem{{\bf wxBITMAP\_TYPE\_PNG}}{Save a PNG image file.}

 \twocolitem{{\bf wxBITMAP\_TYPE\_JPEG}}{Save a JPEG image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_JPEG}}{Save a JPEG image file.}

-\twocolitem{{\bf wxBITMAP\_TYPE\_PCX}}{Save a PCX image file.}
-\end{twocollist}
-
-The validity of these flags depends on the platform and wxWindows configuration
-as well as user-added handlers.}
+\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.}
 
 
 \docparam{mimetype}{MIME type.}
 


@@ -677,7 +679,7 @@ If the image file contains more than one image and the image handler is capable
 of retrieving these individually, this function will return the number of
 available images.
 
 of retrieving these individually, this function will return the number of
 available images.
 

-\docparam{stream}{Opened input stream for reading image file.}
+\docparam{stream}{Opened input stream for reading image data. Currently, the stream must support seeking.}

 
 \wxheading{Return value}
 
 
 \wxheading{Return value}
 


@@ -707,7 +709,7 @@ indicates which image to read from the stream.
 
 \docparam{image}{The image object which is to be affected by this operation.}
 
 
 \docparam{image}{The image object which is to be affected by this operation.}
 

-\docparam{stream}{Opened input stream for reading images.}
+\docparam{stream}{Opened input stream for reading image data.}

 
 \docparam{verbose}{If set to TRUE, errors reported by the image handler will produce wxLogMessages.}
 
 
 \docparam{verbose}{If set to TRUE, errors reported by the image handler will produce wxLogMessages.}
 


@@ -733,7 +735,7 @@ Saves a image in the output stream.
 
 \docparam{image}{The image object which is to be affected by this operation.}
 
 
 \docparam{image}{The image object which is to be affected by this operation.}
 

-\docparam{stream}{An opened stream for writing images.}
+\docparam{stream}{Opened output stream for writing the data.}

 
 \wxheading{Return value}
 
 
 \wxheading{Return value}