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document GetOptionInt() as returning 0 for the options which are not present

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32190 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2005-02-19 16:33:38 +00:00
parent fe9308c639
commit 07d0abae96
2 changed files with 74 additions and 4 deletions
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76
docs/latex/wx/image.tex
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@@ -76,6 +76,7 @@ PNM format, {\bf wxPNMHandler} will always save as raw RGB.
\latexignore{\rtfignore{\wxheading{Members}}}
\membersection{wxImage::wxImage}\label{wximagector}
\func{}{wxImage}{\void}
@@ -199,12 +200,14 @@ platform-dependent bitmap}
\end{itemize}
}
\membersection{wxImage::\destruct{wxImage}}\label{wximagedtor}
\func{}{\destruct{wxImage}}{\void}
Destructor.
\membersection{wxImage::AddHandler}\label{wximageaddhandler}
\func{static void}{AddHandler}{\param{wxImageHandler*}{ handler}}
@@ -223,6 +226,7 @@ of a given handler class in an application session.}
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}\label{wximagecleanuphandlers}
\func{static void}{CleanUpHandlers}{\void}
@@ -231,6 +235,7 @@ Deletes all image handlers.
This function is called by wxWidgets on exit.
\membersection{wxImage::ComputeHistogram}\label{wximagecomputehistogram}
\constfunc{unsigned long}{ComputeHistogram}{\param{wxImageHistogram\& }{histogram}}
@@ -257,6 +262,7 @@ WX_DECLARE_EXPORTED_HASH_MAP(unsigned long, wxImageHistogramEntry,
Returns number of colours in the histogram.
\membersection{wxImage::ConvertAlphaToMask}\label{wximageconvertalphatomask}
\func{bool}{ConvertAlphaToMask}{\param{unsigned char}{ threshold = 128}}
@@ -273,6 +279,7 @@ ConvertAlphaToMask does nothing.
\false if FindFirstUnusedColour returns \false, \true otherwise.
\membersection{wxImage::ConvertToBitmap}\label{wximageconverttobitmap}
\constfunc{wxBitmap}{ConvertToBitmap}{\void}
@@ -280,6 +287,7 @@ ConvertAlphaToMask does nothing.
Deprecated, use equivalent \helpref{wxBitmap constructor}{wxbitmapctor}
(which takes wxImage and depth as its arguments) instead.
\membersection{wxImage::ConvertToMono}\label{wxbitmapconverttomono}
\constfunc{wxImage}{ConvertToMono}{\param{unsigned char}{ r}, \param{unsigned char}{ g}, \param{unsigned char}{ b}}
@@ -288,12 +296,14 @@ Returns monochromatic version of the image. The returned image has white
colour where the original has {\it (r,g,b)} colour and black colour
everywhere else.
\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}, \param{bool}{ clear=true}}
@@ -311,12 +321,14 @@ Otherwise, the image data will be uninitialized.
true if the call succeeded, false otherwise.
\membersection{wxImage::Destroy}\label{wximagedestroy}
\func{void}{Destroy}{\void}
Destroys the image data.
\membersection{wxImage::FindFirstUnusedColour}\label{wximagefindfirstunusedcolour}
\func{bool}{FindFirstUnusedColour}{\param{unsigned char *}{ r}, \param{unsigned char *}{ g}, \param{unsigned char *}{ b}, \param{unsigned char}{ startR = 1}, \param{unsigned char}{ startG = 0}, \param{unsigned char}{ startB = 0}}
@@ -341,6 +353,7 @@ Returns false if there is no unused colour left, true on success.
Note that this method involves computing the histogram, which is
computationally intensive operation.
\membersection{wxImage::FindHandler}\label{wximagefindhandler}
\func{static wxImageHandler*}{FindHandler}{\param{const wxString\& }{name}}
@@ -375,6 +388,7 @@ A pointer to the handler if found, NULL otherwise.
\helpref{wxImageHandler}{wximagehandler}
\membersection{wxImage::GetImageExtWildcard}\label{wximagegetimageextwildcard}
\func{static wxString}{GetImageExtWildcard}{\void}
@@ -398,6 +412,7 @@ Example:
\helpref{wxImageHandler}{wximagehandler}
\membersection{wxImage::GetAlpha}\label{wximagegetalpha}
\constfunc{unsigned char}{GetAlpha}{\param{int}{ x}, \param{int}{ y}}
@@ -417,12 +432,14 @@ pointer is {\tt NULL} for the images without the alpha channel. If the image
does have it, this pointer may be used to directly manipulate the alpha values
which are stored as the \helpref{RGB}{wximagegetdata} ones.
\membersection{wxImage::GetBlue}\label{wximagegetblue}
\constfunc{unsigned char}{GetBlue}{\param{int}{ x}, \param{int}{ y}}
Returns the blue intensity at the given coordinate.
\membersection{wxImage::GetData}\label{wximagegetdata}
\constfunc{unsigned char*}{GetData}{\void}
@@ -438,12 +455,14 @@ on.
You should not delete the returned pointer nor pass it to
\helpref{wxImage::SetData}{wximagesetdata}.
\membersection{wxImage::GetGreen}\label{wximagegetgreen}
\constfunc{unsigned char}{GetGreen}{\param{int}{ x}, \param{int}{ y}}
Returns the green intensity at the given coordinate.
\membersection{wxImage::GetImageCount}\label{wximagegetimagecount}
\func{static int}{GetImageCount}{\param{const wxString\&}{ filename}, \param{long}{ type = wxBITMAP\_TYPE\_ANY}}
@@ -481,6 +500,7 @@ available images.
Number of available images. For most image handlers, this is 1 (exceptions
are TIFF and ICO formats).
\membersection{wxImage::GetHandlers}\label{wximagegethandlers}
\func{static wxList\&}{GetHandlers}{\void}
@@ -491,30 +511,35 @@ Returns the static list of image format handlers.
\helpref{wxImageHandler}{wximagehandler}
\membersection{wxImage::GetHeight}\label{wximagegetheight}
\constfunc{int}{GetHeight}{\void}
Gets the height of the image in pixels.
\membersection{wxImage::GetMaskBlue}\label{wximagegetmaskblue}
\constfunc{unsigned char}{GetMaskBlue}{\void}
Gets the blue value of the mask colour.
\membersection{wxImage::GetMaskGreen}\label{wximagegetmaskgreen}
\constfunc{unsigned char}{GetMaskGreen}{\void}
Gets the green value of the mask colour.
\membersection{wxImage::GetMaskRed}\label{wximagegetmaskred}
\constfunc{unsigned char}{GetMaskRed}{\void}
Gets the red value of the mask colour.
\membersection{wxImage::GetPalette}\label{wximagegetpalette}
\constfunc{const wxPalette\&}{GetPalette}{\void}
@@ -524,12 +549,14 @@ 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}}
@@ -537,6 +564,7 @@ Returns the red intensity at the given coordinate.
Returns a sub image of the current one as long as the rect belongs entirely to
the image.
\membersection{wxImage::GetWidth}\label{wximagegetwidth}
\constfunc{int}{GetWidth}{\void}
@@ -547,6 +575,7 @@ Gets the width of the image in pixels.
\helpref{wxImage::GetHeight}{wximagegetheight}
\membersection{wxImage::HasAlpha}\label{wximagehasalpha}
\constfunc{bool}{HasAlpha}{\void}
@@ -557,12 +586,14 @@ Returns true if this image has alpha channel, false otherwise.
\helpref{GetAlpha}{wximagegetalpha}, \helpref{SetAlpha}{wximagesetalpha}
\membersection{wxImage::HasMask}\label{wximagehasmask}
\constfunc{bool}{HasMask}{\void}
Returns true if there is a mask active, false otherwise.
\membersection{wxImage::GetOption}\label{wximagegetoption}
\constfunc{wxString}{GetOption}{\param{const wxString\&}{ name}}
@@ -578,17 +609,22 @@ used, which is a number between 0 and 100 (0 is terrible, 100 is very good).
\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}.
If the given option is not present, the function returns $0$. Use
\helpref{wxImage::HasOption}{wximagehasoption} is $0$ is a possibly valid value
for the option.
\wxheading{See also}
\helpref{wxImage::SetOption}{wximagesetoption},\rtfsp
\helpref{wxImage::GetOption}{wximagegetoption},\rtfsp
\helpref{wxImage::HasOption}{wximagehasoption}
\helpref{wxImage::GetOption}{wximagegetoption}
\membersection{wxImage::HasOption}\label{wximagehasoption}
@@ -602,6 +638,7 @@ Returns true if the given option is present. The function is case-insensitive to
\helpref{wxImage::GetOption}{wximagegetoption},\rtfsp
\helpref{wxImage::GetOptionInt}{wximagegetoptionint}
\membersection{wxImage::InitStandardHandlers}\label{wximageinitstandardhandlers}
\func{static void}{InitStandardHandlers}{\void}
@@ -617,6 +654,7 @@ the user.
\helpref{wxImageHandler}{wximagehandler},
\helpref{wxInitAllImageHandlers}{wxinitallimagehandlers}
\membersection{wxImage::InsertHandler}\label{wximageinserthandler}
\func{static void}{InsertHandler}{\param{wxImageHandler*}{ handler}}
@@ -630,6 +668,7 @@ of a given handler class in an application session.}
\helpref{wxImageHandler}{wximagehandler}
\membersection{wxImage::LoadFile}\label{wximageloadfile}
\func{bool}{LoadFile}{\param{const wxString\&}{ name}, \param{long}{ type = wxBITMAP\_TYPE\_ANY}, \param{int}{ index = -1}}
@@ -715,12 +754,14 @@ mimetype from a file}
}
\membersection{wxImage::Ok}\label{wximageok}
\constfunc{bool}{Ok}{\void}
Returns true if image data is present.
\membersection{wxImage::RemoveHandler}\label{wximageremovehandler}
\func{static bool}{RemoveHandler}{\param{const wxString\& }{name}}
@@ -738,6 +779,7 @@ true if the handler was found and removed, false otherwise.
\helpref{wxImageHandler}{wximagehandler}
\membersection{wxImage::Mirror}\label{wximagemirror}
\constfunc{wxImage}{Mirror}{\param{bool}{ horizontally = true}}
@@ -745,6 +787,7 @@ true if the handler was found and removed, false otherwise.
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},
@@ -752,6 +795,7 @@ indicates the orientation.
Replaces the colour specified by {\it r1,g1,b1} by the colour {\it r2,g2,b2}.
\membersection{wxImage::Rescale}\label{wximagerescale}
\func{wxImage \&}{Rescale}{\param{int}{ width}, \param{int}{ height}}
@@ -765,6 +809,7 @@ Returns the (modified) image itself.
\helpref{Scale}{wximagescale}
\membersection{wxImage::Rotate}\label{wximagerotate}
\func{wxImage}{Rotate}{\param{double}{ angle}, \param{const wxPoint\& }{rotationCentre},
@@ -777,6 +822,7 @@ 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}}
@@ -784,6 +830,7 @@ Returns the rotated image, leaving this image intact.
Returns a copy of the image rotated 90 degrees in the direction
indicated by {\it clockwise}.
\membersection{wxImage::SaveFile}\label{wximagesavefile}
\constfunc{bool}{SaveFile}{\param{const wxString\& }{name}, \param{int}{ type}}
@@ -865,6 +912,7 @@ mimetype to the named file}
\end{itemize}
}
\membersection{wxImage::Scale}\label{wximagescale}
\constfunc{wxImage}{Scale}{\param{int}{ width}, \param{int}{ height}}
@@ -899,6 +947,7 @@ Example:
\helpref{Rescale}{wximagerescale}
\membersection{wxImage::SetAlpha}\label{wximagesetalpha}
\func{void}{SetAlpha}{\param{unsigned char *}{alpha = {\tt NULL}}}
@@ -916,6 +965,7 @@ Sets the alpha value for the given pixel. This function should only be called
if the image has alpha channel data, use \helpref{HasAlpha}{wximagehasalpha} to
check for this.
\membersection{wxImage::SetData}\label{wximagesetdata}
\func{void}{SetData}{\param{unsigned char*}{data}}
@@ -932,18 +982,21 @@ 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}}
Specifies whether there is a mask or not. The area of the mask is determined by the current mask colour.
\membersection{wxImage::SetMaskColour}\label{wximagesetmaskcolour}
\func{void}{SetMaskColour}{\param{unsigned char }{red}, \param{unsigned char }{green}, \param{unsigned char }{blue}}
Sets the mask colour for this image (and tells the image to use the mask).
\membersection{wxImage::SetMaskFromImage}\label{wximagesetmaskfromimage}
\func{bool}{SetMaskFromImage}{\param{const wxImage\&}{ mask}, \param{unsigned char}{ mr}, \param{unsigned char}{ mg}, \param{unsigned char}{ mb}}
@@ -971,6 +1024,7 @@ applied.
Note that this method involves computing the histogram, which is
computationally intensive operation.
\membersection{wxImage::SetOption}\label{wximagesetoption}
\func{void}{SetOption}{\param{const wxString\&}{ name}, \param{const wxString\&}{ value}}
@@ -988,6 +1042,7 @@ used, which is a number between 0 and 100 (0 is terrible, 100 is very good).
\helpref{wxImage::GetOptionInt}{wximagegetoptionint},\rtfsp
\helpref{wxImage::HasOption}{wximagehasoption}
\membersection{wxImage::SetPalette}\label{wximagesetpalette}
\func{void}{SetPalette}{\param{const wxPalette\&}{ palette}}
@@ -995,6 +1050,7 @@ used, which is a number between 0 and 100 (0 is terrible, 100 is very good).
Associates a palette with the image. The palette may be used when converting
wxImage to wxBitmap (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 }{green}, \param{unsigned char }{blue}}
@@ -1005,6 +1061,7 @@ data, but in some cases this might be too slow so that the data will have to
be set directly. In that case you will have to get access to the image data
using the \helpref{GetData}{wximagegetdata} method.
\membersection{wxImage::operator $=$}\label{wximageassign}
\func{wxImage\& }{operator $=$}{\param{const wxImage\& }{image}}
@@ -1021,6 +1078,7 @@ counter. It is a fast operation.
Returns 'this' object.
\membersection{wxImage::operator $==$}\label{wximageequal}
\constfunc{bool}{operator $==$}{\param{const wxImage\& }{image}}
@@ -1036,6 +1094,7 @@ equal (a fast test).
Returns true if the images were effectively equal, false otherwise.
\membersection{wxImage::operator $!=$}\label{wximagenotequal}
\constfunc{bool}{operator $!=$}{\param{const wxImage\& }{image}}
@@ -1082,6 +1141,7 @@ created by IJG.)
\latexignore{\rtfignore{\wxheading{Members}}}
\membersection{wxImageHandler::wxImageHandler}\label{wximagehandlerctor}
\func{}{wxImageHandler}{\void}
@@ -1089,24 +1149,28 @@ created by IJG.)
Default constructor. In your own default constructor, initialise the members
m\_name, m\_extension and m\_type.
\membersection{wxImageHandler::\destruct{wxImageHandler}}\label{wximagehandlerdtor}
\func{}{\destruct{wxImageHandler}}{\void}
Destroys the wxImageHandler object.
\membersection{wxImageHandler::GetName}\label{wximagehandlergetname}
\constfunc{wxString}{GetName}{\void}
Gets the name of this handler.
\membersection{wxImageHandler::GetExtension}\label{wximagehandlergetextension}
\constfunc{wxString}{GetExtension}{\void}
Gets the file extension associated with this handler.
\membersection{wxImageHandler::GetImageCount}\label{wximagehandlergetimagecount}
\func{int}{GetImageCount}{\param{wxInputStream\&}{ stream}}
@@ -1122,18 +1186,21 @@ available images.
Number of available images. For most image handlers, this is 1 (exceptions
are TIFF and ICO formats).
\membersection{wxImageHandler::GetType}\label{wximagehandlergettype}
\constfunc{long}{GetType}{\void}
Gets the image type associated with this handler.
\membersection{wxImageHandler::GetMimeType}\label{wximagehandlergetmimetype}
\constfunc{wxString}{GetMimeType}{\void}
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}}
@@ -1162,6 +1229,7 @@ true if the operation succeeded, false otherwise.
\helpref{wxImage::SaveFile}{wximagesavefile},
\helpref{wxImageHandler::SaveFile}{wximagehandlersavefile}
\membersection{wxImageHandler::SaveFile}\label{wximagehandlersavefile}
\func{bool}{SaveFile}{\param{wxImage* }{image}, \param{wxOutputStream\& }{stream}}
@@ -1184,6 +1252,7 @@ true if the operation succeeded, false otherwise.
\helpref{wxImage::SaveFile}{wximagesavefile},
\helpref{wxImageHandler::LoadFile}{wximagehandlerloadfile}
\membersection{wxImageHandler::SetName}\label{wximagehandlersetname}
\func{void}{SetName}{\param{const wxString\& }{name}}
@@ -1194,6 +1263,7 @@ Sets the handler name.
\docparam{name}{Handler name.}
\membersection{wxImageHandler::SetExtension}\label{wximagehandlersetextension}
\func{void}{SetExtension}{\param{const wxString\& }{extension}}
@@ -1204,6 +1274,7 @@ Sets the handler extension.
\docparam{extension}{Handler extension.}
\membersection{wxImageHandler::SetMimeType}\label{wximagehandlersetmimetype}
\func{void}{SetMimeType}{\param{const wxString\& }{mimetype}}
@@ -1214,6 +1285,7 @@ Sets the handler MIME type.
\docparam{mimename}{Handler MIME type.}
\membersection{wxImageHandler::SetType}\label{wximagehandlersettype}
\func{void}{SetType}{\param{long }{type}}

2
src/common/image.cpp
View File

@@ -1126,8 +1126,6 @@ wxString wxImage::GetOption(const wxString& name) const
int wxImage::GetOptionInt(const wxString& name) const
{
wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
return wxAtoi(GetOption(name));
}