X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/649d13e837b25f7b948ccfae02b18131f3a0a743..3e43d6143ba737da833e58b8f51eb400d374cb00:/docs/latex/wx/image.tex

diff --git a/docs/latex/wx/image.tex b/docs/latex/wx/image.tex
index 28aadc6a22..b932f7a6fd 100644
--- a/docs/latex/wx/image.tex
+++ b/docs/latex/wx/image.tex
@@ -18,22 +18,24 @@ creation of a \helpref{wxMask}{wxmask} object associated to the bitmap object.
 \wxheading{Available image handlers}
 
 The following image handlers are available. {\bf wxBMPHandler} is always
-installed by default. To use other image formats, install the appropiate
+installed by default. To use other image formats, install the appropriate
 handler with \helpref{wxImage::AddHandler}{wximageaddhandler} or 
 \helpref{wxInitAllImageHandlers}{wxinitallimagehandlers}.
 
 \twocolwidtha{5cm}%
 \begin{twocollist}
-\twocolitem{\indexit{wxBMPHandler}}{Only for loading, always installed.}
+\twocolitem{\indexit{wxBMPHandler}}{For loading and saving, always installed.}
 \twocolitem{\indexit{wxPNGHandler}}{For loading and saving.}
 \twocolitem{\indexit{wxJPEGHandler}}{For loading and saving.}
 \twocolitem{\indexit{wxGIFHandler}}{Only for loading, due to legal issues.}
 \twocolitem{\indexit{wxPCXHandler}}{For loading and saving (see below).}
 \twocolitem{\indexit{wxPNMHandler}}{For loading and saving (see below).}
 \twocolitem{\indexit{wxTIFFHandler}}{For loading and saving.}
+\twocolitem{\indexit{wxIFFHandler}}{For loading only.}
 \twocolitem{\indexit{wxXPMHandler}}{For loading and saving.}
 \twocolitem{\indexit{wxICOHandler}}{For loading and saving.}
 \twocolitem{\indexit{wxCURHandler}}{For loading and saving.}
+\twocolitem{\indexit{wxANIHandler}}{For loading only.}
 \end{twocollist}
 
 When saving in PCX format, {\bf wxPCXHandler} will count the number of
@@ -79,10 +81,10 @@ 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}}
+\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
+{\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()}.
 
@@ -122,15 +124,16 @@ Loads an image from an input stream.
 \twocolitem{\indexit{wxBITMAP\_TYPE\_XPM}}{Load a XPM bitmap file.}
 \twocolitem{\indexit{wxBITMAP\_TYPE\_ICO}}{Load a Windows icon file (ICO).}
 \twocolitem{\indexit{wxBITMAP\_TYPE\_CUR}}{Load a Windows cursor file (CUR).}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_ANI}}{Load a Windows animated cursor file (ANI).}
 \twocolitem{\indexit{wxBITMAP\_TYPE\_ANY}}{Will try to autodetect the format.}
 \end{twocollist}}
 
 \docparam{mimetype}{MIME type string (for example 'image/jpeg')}
 
 \docparam{index}{Index of the image to load in the case that the image file contains multiple images.
-This is only used by ICO and TIFF handlers. The default value (-1) means 
+This is only used by GIF, ICO and TIFF handlers. The default value (-1) means 
 "choose the default image" and is interpreted as the first image (index=0) by 
-the TIFF handler and as the largest and most colourful one by the ICO handler.}
+the GIF and TIFF handler and as the largest and most colourful one by the ICO handler.}
 
 \wxheading{Remarks}
 
@@ -143,8 +146,8 @@ initialized with \helpref{wxImage::AddHandler}{wximageaddhandler} or
 Note: you can use \helpref{GetOptionInt}{wximagegetoptionint} to get the 
 hotspot for loaded cursor file:
 \begin{verbatim}
-    int hotspot_x = image.GetOptionInt(wxCUR_HOTSPOT_X);
-    int hotspot_y = image.GetOptionInt(wxCUR_HOTSPOT_Y);
+    int hotspot_x = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X);
+    int hotspot_y = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y);
 
 \end{verbatim}
 
@@ -194,6 +197,10 @@ of a given handler class in an application session.}
 
 \helpref{wxImageHandler}{wximagehandler}
 
+\func{bool}{CanRead}{\param{const wxString\&}{ filename}}
+
+returns true if the current image handlers can read this file
+
 \pythonnote{In wxPython this static method is named {\tt wxImage\_AddHandler}.}
 \membersection{wxImage::CleanUpHandlers}
 
@@ -203,6 +210,32 @@ Deletes all image handlers.
 
 This function is called by wxWindows on exit.
 
+\membersection{wxImage::ComputeHistogram}\label{wximagecomputehistogram}
+
+\constfunc{unsigned long}{ComputeHistogram}{\param{wxImageHistogram\& }{histogram}}
+
+Computes the histogram of the image. {\it histogram} is a reference to 
+wxImageHistogram object. wxImageHistogram is a specialization of 
+\helpref{wxHashMap}{wxhashmap} "template" and is defined as follows:
+
+\begin{verbatim}
+class WXDLLEXPORT wxImageHistogramEntry
+{
+public:
+    wxImageHistogramEntry() : index(0), value(0) {}
+    unsigned long index;
+    unsigned long value;
+};
+
+WX_DECLARE_EXPORTED_HASH_MAP(unsigned long, wxImageHistogramEntry,
+                             wxIntegerHash, wxIntegerEqual,
+                             wxImageHistogram);
+\end{verbatim}
+
+\wxheading{Return value}
+
+Returns number of colours in the histogram.
+
 \membersection{wxImage::ConvertToBitmap}\label{wximageconverttobitmap}
 
 \constfunc{wxBitmap}{ConvertToBitmap}{\void}
@@ -238,7 +271,7 @@ Creates a fresh image.
 
 \wxheading{Return value}
 
-TRUE if the call succeeded, FALSE otherwise.
+true if the call succeeded, false otherwise.
 
 \membersection{wxImage::Destroy}\label{wximagedestroy}
 
@@ -263,7 +296,7 @@ order) by 1 until an unused colour is found or the colour space exhausted.
 
 \wxheading{Return value}
 
-Returns FALSE if there is no unused colour left, TRUE on success.
+Returns false if there is no unused colour left, true on success.
 
 \wxheading{Notes}
 
@@ -316,7 +349,10 @@ Returns the blue intensity at the given coordinate.
 
 Returns the image data as an array. This is most often used when doing
 direct image manipulation. The return value points to an array of
-chararcters in RGBGBRGB... format.
+characters in RGBRGBRGB$\ldots$ format.
+
+You should not delete the returned pointer nor pass it to
+\helpref{wxImage::SetData}{wximagesetdata}.
 
 \membersection{wxImage::GetGreen}\label{wximagegetgreen}
 
@@ -352,6 +388,7 @@ available images.
 \twocolitem{\indexit{wxBITMAP\_TYPE\_XPM}}{Load a XPM bitmap file.}
 \twocolitem{\indexit{wxBITMAP\_TYPE\_ICO}}{Load a Windows icon file (ICO).}
 \twocolitem{\indexit{wxBITMAP\_TYPE\_CUR}}{Load a Windows cursor file (CUR).}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_ANI}}{Load a Windows animated cursor file (ANI).}
 \twocolitem{\indexit{wxBITMAP\_TYPE\_ANY}}{Will try to autodetect the format.}
 \end{twocollist}}
 
@@ -360,12 +397,6 @@ available images.
 Number of available images. For most image handlers, this is 1 (exceptions
 are TIFF and ICO formats).
 
-\membersection{wxImage::GetRed}\label{wximagegetred}
-
-\constfunc{unsigned char}{GetRed}{\param{int}{ x}, \param{int}{ y}}
-
-Returns the red intensity at the given coordinate.
-
 \membersection{wxImage::GetHandlers}
 
 \func{static wxList\&}{GetHandlers}{\void}
@@ -409,6 +440,12 @@ used when converting to wxBitmap under Windows.
 
 Eventually wxImage handlers will set the palette if one exists in the image file.
 
+\membersection{wxImage::GetRed}\label{wximagegetred}
+
+\constfunc{unsigned char}{GetRed}{\param{int}{ x}, \param{int}{ y}}
+
+Returns the red intensity at the given coordinate.
+
 \membersection{wxImage::GetSubImage}\label{wximagegetsubimage}
 
 \constfunc{wxImage}{GetSubImage}{\param{const wxRect\&}{ rect}}
@@ -430,7 +467,7 @@ Gets the width of the image in pixels.
 
 \constfunc{bool}{HasMask}{\void}
 
-Returns TRUE if there is a mask active, FALSE otherwise.
+Returns true if there is a mask active, false otherwise.
 
 \membersection{wxImage::GetOption}\label{wximagegetoption}
 
@@ -463,7 +500,7 @@ Gets a user-defined option as an integer. The function is case-insensitive to {\
 
 \constfunc{bool}{HasOption}{\param{const wxString\&}{ name}}
 
-Returns TRUE if the given option is present. The function is case-insensitive to {\it name}.
+Returns true if the given option is present. The function is case-insensitive to {\it name}.
 
 \wxheading{See also}
 
@@ -534,15 +571,16 @@ Loads an image from an input stream.
 \twocolitem{{\bf wxBITMAP\_TYPE\_XPM}}{Load a XPM image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_ICO}}{Load a Windows icon file (ICO).}
 \twocolitem{{\bf wxBITMAP\_TYPE\_CUR}}{Load a Windows cursor file (CUR).}
+\twocolitem{\indexit{wxBITMAP\_TYPE\_ANI}}{Load a Windows animated cursor file (ANI).}
 \twocolitem{{\bf wxBITMAP\_TYPE\_ANY}}{Will try to autodetect the format.}
 \end{twocollist}}
 
 \docparam{mimetype}{MIME type string (for example 'image/jpeg')}
 
 \docparam{index}{Index of the image to load in the case that the image file contains multiple images.
-This is only used by ICO and TIFF handlers. The default value (-1) means 
+This is only used by GIF, ICO and TIFF handlers. The default value (-1) means 
 "choose the default image" and is interpreted as the first image (index=0) by 
-the TIFF handler and as the largest and most colourful one by the ICO handler.}
+the GIF and TIFF handler and as the largest and most colourful one by the ICO handler.}
 
 \wxheading{Remarks}
 
@@ -551,14 +589,15 @@ Depending on how wxWindows has been configured, not all formats may be available
 Note: you can use \helpref{GetOptionInt}{wximagegetoptionint} to get the 
 hotspot for loaded cursor file:
 \begin{verbatim}
-    int hotspot_x = image.GetOptionInt(wxCUR_HOTSPOT_X);
-    int hotspot_y = image.GetOptionInt(wxCUR_HOTSPOT_Y);
+    int hotspot_x = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X);
+    int hotspot_y = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y);
 
 \end{verbatim}
 
 \wxheading{Return value}
 
-TRUE if the operation succeeded, FALSE otherwise.
+true if the operation succeeded, false otherwise. If the optional index parameter is out of range,
+false is returned and a call to wxLogError() takes place.
 
 \wxheading{See also}
 
@@ -586,7 +625,7 @@ mimetype from a file}
 
 \constfunc{bool}{Ok}{\void}
 
-Returns TRUE if image data is present.
+Returns true if image data is present.
 
 \membersection{wxImage::RemoveHandler}
 
@@ -599,7 +638,7 @@ is not deleted.
 
 \wxheading{Return value}
 
-TRUE if the handler was found and removed, FALSE otherwise.
+true if the handler was found and removed, false otherwise.
 
 \wxheading{See also}
 
@@ -607,17 +646,23 @@ TRUE if the handler was found and removed, FALSE otherwise.
 
 \membersection{wxImage::SaveFile}\label{wximagesavefile}
 
-\func{bool}{SaveFile}{\param{const wxString\& }{name}, \param{int}{ type}}
+\constfunc{bool}{SaveFile}{\param{const wxString\& }{name}, \param{int}{ type}}
+
+\constfunc{bool}{SaveFile}{\param{const wxString\& }{name}, \param{const wxString\&}{ mimetype}}
 
-\func{bool}{SaveFile}{\param{const wxString\& }{name}, \param{const wxString\&}{ mimetype}}
+Saves an image in the named file.
 
-Saves a image in the named file.
+\constfunc{bool}{SaveFile}{\param{const wxString\& }{name}}
 
-\func{bool}{SaveFile}{\param{wxOutputStream\& }{stream}, \param{int}{ type}}
+Saves an image in the named file. File type is determined from the extension of the
+file name. Note that this function may fail if the extension is not recognized! You
+can use one of the forms above to save images to files with non-standard extensions.
 
-\func{bool}{SaveFile}{\param{wxOutputStream\& }{stream}, \param{const wxString\&}{ mimetype}}
+\constfunc{bool}{SaveFile}{\param{wxOutputStream\& }{stream}, \param{int}{ type}}
 
-Saves a image in the given stream.
+\constfunc{bool}{SaveFile}{\param{wxOutputStream\& }{stream}, \param{const wxString\&}{ mimetype}}
+
+Saves an image in the given stream.
 
 \wxheading{Parameters}
 
@@ -625,17 +670,17 @@ Saves a image in the given stream.
 
 \docparam{stream}{Opened output stream to save the image to.}
 
-\docparam{type}{Currently three types can be used:
+\docparam{type}{Currently these types can be used:
 
 \twocolwidtha{5cm}%
 \begin{twocollist}
+\twocolitem{{\bf wxBITMAP\_TYPE\_BMP}}{Save a BMP image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_JPEG}}{Save a JPEG image file.}
 \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\_TIFF}}{Save a TIFF image file.}
 \twocolitem{{\bf wxBITMAP\_TYPE\_XPM}}{Save a XPM image file.}
-\twocolitem{{\bf wxBITMAP\_TYPE\_ICO}}{Save a ICO image file. }
 \twocolitem{{\bf wxBITMAP\_TYPE\_ICO}}{Save a Windows icon file (ICO) (the size may be up to 255 wide by 127 high. A single image is saved in 8 colors at the size supplied).}
 \twocolitem{{\bf wxBITMAP\_TYPE\_CUR}}{Save a Windows cursor file (CUR).}
 \end{twocollist}}
@@ -644,7 +689,7 @@ Saves a image in the given stream.
 
 \wxheading{Return value}
 
-TRUE if the operation succeeded, FALSE otherwise.
+true if the operation succeeded, false otherwise.
 
 \wxheading{Remarks}
 
@@ -654,8 +699,8 @@ Note: you can use \helpref{GetOptionInt}{wximagegetoptionint} to set the
 hotspot before saving an image into a cursor file (default hotspot is in 
 the centre of the image):
 \begin{verbatim}
-    image.SetOption(wxCUR_HOTSPOT_X, hotspotX);
-    image.SetOption(wxCUR_HOTSPOT_Y, hotspotY);
+    image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, hotspotX);
+    image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, hotspotY);
 
 \end{verbatim}
 
@@ -682,7 +727,7 @@ mimetype to the named file}
 
 \membersection{wxImage::Mirror}\label{wximagemirror}
 
-\constfunc{wxImage}{Mirror}{\param{bool}{ horizontally = TRUE}}
+\constfunc{wxImage}{Mirror}{\param{bool}{ horizontally = true}}
 
 Returns a mirrored copy of the image. The parameter {\it horizontally}
 indicates the orientation.
@@ -710,9 +755,9 @@ Returns the (modified) image itself.
 \membersection{wxImage::Rotate}\label{wximagerotate}
 
 \func{wxImage}{Rotate}{\param{double}{ angle}, \param{const wxPoint\& }{rotationCentre},
- \param{bool}{ interpolating = TRUE}, \param{wxPoint*}{ offsetAfterRotation = NULL}}
+ \param{bool}{ interpolating = true}, \param{wxPoint*}{ offsetAfterRotation = NULL}}
 
-Rotates the image about the given point, by {\it angle} radians. Passing TRUE
+Rotates the image about the given point, by {\it angle} radians. Passing true
 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.
@@ -721,7 +766,7 @@ Returns the rotated image, leaving this image intact.
 
 \membersection{wxImage::Rotate90}\label{wximagerotate90}
 
-\constfunc{wxImage}{Rotate90}{\param{bool}{ clockwise = TRUE}}
+\constfunc{wxImage}{Rotate90}{\param{bool}{ clockwise = true}}
 
 Returns a copy of the image rotated 90 degrees in the direction
 indicated by {\it clockwise}.
@@ -768,9 +813,16 @@ Sets the image data without performing checks. The data given must have
 the size (width*height*3) or results will be unexpected. Don't use this
 method if you aren't sure you know what you are doing.
 
+The data must have been allocated with malloc(), NOT with operator new.
+
+After this call the pointer to the data is owned by the wxImage object,
+that will be responsible for deleting it.
+Do not pass to this function a pointer obtained through
+\helpref{wxImage::GetData}{wximagegetdata}.
+
 \membersection{wxImage::SetMask}\label{wximagesetmask}
 
-\func{void}{SetMask}{\param{bool}{ hasMask = TRUE}}
+\func{void}{SetMask}{\param{bool}{ hasMask = true}}
 
 Specifies whether there is a mask or not. The area of the mask is determined by the current mask colour.
 
@@ -798,8 +850,8 @@ in {\it mask} has given RGB value.
 
 \wxheading{Return value}
 
-Returns FALSE if {\it mask} does not have same dimensions as the image or if
-there is no unused colour left. Returns TRUE if the mask was successfully 
+Returns false if {\it mask} does not have same dimensions as the image or if
+there is no unused colour left. Returns true if the mask was successfully 
 applied.
 
 \wxheading{Notes}
@@ -859,7 +911,7 @@ Returns 'this' object.
 
 \membersection{wxImage::operator $==$}
 
-\func{bool}{operator $==$}{\param{const wxImage\& }{image}}
+\constfunc{bool}{operator $==$}{\param{const wxImage\& }{image}}
 
 Equality operator. This operator tests whether the internal data pointers are
 equal (a fast test).
@@ -870,11 +922,11 @@ equal (a fast test).
 
 \wxheading{Return value}
 
-Returns TRUE if the images were effectively equal, FALSE otherwise.
+Returns true if the images were effectively equal, false otherwise.
 
 \membersection{wxImage::operator $!=$}
 
-\func{bool}{operator $!=$}{\param{const wxImage\& }{image}}
+\constfunc{bool}{operator $!=$}{\param{const wxImage\& }{image}}
 
 Inequality operator. This operator tests whether the internal data pointers are
 unequal (a fast test).
@@ -885,7 +937,7 @@ unequal (a fast test).
 
 \wxheading{Return value}
 
-Returns TRUE if the images were unequal, FALSE otherwise.
+Returns true if the images were unequal, false otherwise.
 
 \section{\class{wxImageHandler}}\label{wximagehandler}
 
@@ -972,7 +1024,7 @@ Gets the MIME type associated with this handler.
 
 \membersection{wxImageHandler::LoadFile}\label{wximagehandlerloadfile}
 
-\func{bool}{LoadFile}{\param{wxImage* }{image}, \param{wxInputStream\&}{ stream}, \param{bool}{ verbose=TRUE}, \param{int}{ index=0}}
+\func{bool}{LoadFile}{\param{wxImage* }{image}, \param{wxInputStream\&}{ stream}, \param{bool}{ verbose=true}, \param{int}{ index=0}}
 
 Loads a image from a stream, putting the resulting data into {\it image}. If the image file contains
 more than one image and the image handler is capable of retrieving these individually, {\it index}
@@ -984,13 +1036,13 @@ indicates which image to read from the stream.
 
 \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.}
 
 \docparam{index}{The index of the image in the file (starting from zero).}
 
 \wxheading{Return value}
 
-TRUE if the operation succeeded, FALSE otherwise.
+true if the operation succeeded, false otherwise.
 
 \wxheading{See also}
 
@@ -1012,7 +1064,7 @@ Saves a image in the output stream.
 
 \wxheading{Return value}
 
-TRUE if the operation succeeded, FALSE otherwise.
+true if the operation succeeded, false otherwise.
 
 \wxheading{See also}
 
