X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f4fcc2919776cffa5e3b2f0d44dd24c41e652ff4..58fda45507ec59ab5a6e89436ccff29023db9871:/docs/latex/wx/region.tex

diff --git a/docs/latex/wx/region.tex b/docs/latex/wx/region.tex
index 0ca8231cdf..060b19f31a 100644
--- a/docs/latex/wx/region.tex
+++ b/docs/latex/wx/region.tex
@@ -1,7 +1,23 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Name:        region.tex
+%% Purpose:     wxRegion documentation
+%% Author:      wxTeam
+%% Created:
+%% RCS-ID:      $Id$
+%% Copyright:   (c) wxTeam
+%% License:     wxWindows license
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
 \section{\class{wxRegion}}\label{wxregion}
 
-A wxRegion represents a simple or complex region on a device context or window. It uses
-reference counting, so copying and assignment operations are fast.
+A wxRegion represents a simple or complex region on a device context or window.
+
+This class uses \helpref{reference counting and copy-on-write}{trefcount}
+internally so that assignments between two instances of this class are very
+cheap. You can therefore use actual objects instead of pointers without
+efficiency problems. If an instance of this class is changed it will create
+its own data internally so that other instances, which previously shared the
+data using the reference counting, are not affected.
 
 \wxheading{Derived from}
 
@@ -12,13 +28,18 @@ reference counting, so copying and assignment operations are fast.
 
 <wx/region.h>
 
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
 \wxheading{See also}
 
 \helpref{wxRegionIterator}{wxregioniterator}
 
 \latexignore{\rtfignore{\wxheading{Members}}}
 
-\membersection{wxRegion::wxRegion}\label{wxregionconstr}
+
+\membersection{wxRegion::wxRegion}\label{wxregionctor}
 
 \func{}{wxRegion}{\void}
 
@@ -38,21 +59,32 @@ Constructs a rectangular region a wxRect object.
 
 \func{}{wxRegion}{\param{const wxRegion\&}{ region}}
 
-Constructs a region by copying another region.
+Copy constructor, uses \helpref{reference counting}{trefcount}.
 
 \func{}{wxRegion}{\param{size\_t}{ n}, \param{const wxPoint }{*points}, \param{int }{fillStyle = wxWINDING\_RULE}}
 
 Constructs a region corresponding to the polygon made of {\it n} points in the
-provided array. {\it fillStyle} parameter may have values 
+provided array. {\it fillStyle} parameter may have values
 {\tt wxWINDING\_RULE} or {\tt wxODDEVEN\_RULE}.
 
-{\bf NB:} This constructor is only implemented for Win32 and GTK+ wxWindows ports.
+\func{}{wxRegion}{\param{const wxBitmap\&}{ bmp}}
+
+\func{}{wxRegion}{\param{const wxBitmap\&}{ bmp},
+                  \param{const wxColour\&}{ transColour},
+                  \param{int}{ tolerance = 0}}
+
+Constructs a region using the non-transparent pixels of a bitmap.  See
+\helpref{Union}{wxregionunion} for more details.
+
 
-\membersection{wxRegion::\destruct{wxRegion}}
+
+\membersection{wxRegion::\destruct{wxRegion}}\label{wxregiondtor}
 
 \func{}{\destruct{wxRegion}}{\void}
 
 Destructor.
+See \helpref{reference-counted object destruction}{refcountdestruct} for more info.
+
 
 \membersection{wxRegion::Clear}\label{wxregionclear}
 
@@ -60,6 +92,7 @@ Destructor.
 
 Clears the current region.
 
+
 \membersection{wxRegion::Contains}\label{wxregioncontains}
 
 \constfunc{wxRegionContain}{Contains}{\param{long\& }{x}, \param{long\& }{y}}
@@ -85,9 +118,18 @@ The return value is one of wxOutRegion, wxPartRegion and wxInRegion.
 On Windows, only wxOutRegion and wxInRegion are returned; a value wxInRegion then indicates that
 all or some part of the region is contained in this region.
 
+
+\membersection{wxRegion::ConvertToBitmap}\label{wxregionconverttobitmap}
+
+\constfunc{wxBitmap}{ConvertToBitmap}{}
+
+Convert the region to a black and white bitmap with the white pixels
+being inside the region.
+
+
 \membersection{wxRegion::GetBox}\label{wxregiongetbox}
 
-\constfunc{void}{GetBox}{\param{long\& }{x}, \param{long\& }{y}, \param{long\& }{width}, \param{long\& }{height}}
+\constfunc{void}{GetBox}{\param{wxCoord\& }{x}, \param{wxCoord\& }{y}, \param{wxCoord\& }{width}, \param{wxCoord\& }{height}}
 
 Returns the outer bounds of the region.
 
@@ -95,6 +137,7 @@ Returns the outer bounds of the region.
 
 Returns the outer bounds of the region.
 
+
 \membersection{wxRegion::Intersect}\label{wxregionintersect}
 
 \func{bool}{Intersect}{\param{wxCoord}{ x}, \param{wxCoord}{ y}, \param{wxCoord}{ width}, \param{wxCoord}{ height}}
@@ -111,20 +154,31 @@ Finds the intersection of this region and another region.
 
 \wxheading{Return value}
 
-{\tt TRUE} if successful, {\tt FALSE} otherwise.
+{\tt true} if successful, {\tt false} otherwise.
 
 \wxheading{Remarks}
 
 Creates the intersection of the two regions, that is, the parts which are in both regions. The result
 is stored in this region.
 
+
 \membersection{wxRegion::IsEmpty}\label{wxregionisempty}
 
 \constfunc{bool}{IsEmpty}{\void}
 
-Returns {\tt TRUE} if the region is empty, {\tt FALSE} otherwise.
+Returns {\tt true} if the region is empty, {\tt false} otherwise.
+
+
+\membersection{wxRegion::IsEqual}\label{wxregionisequal}
+
+\constfunc{bool}{IsEqual}{\param{const wxRegion\& }{region}}
+
+Returns {\tt true} if the region is equal to, i.e. covers the same area as,
+another one. Note that if both this region and \arg{region} are invalid, they
+are considered to be equal.
 
-\membersection{wxRegion::Subtract}\label{wxregionsubstract}
+
+\membersection{wxRegion::Subtract}\label{wxregionsubtract}
 
 \func{bool}{Subtract}{\param{const wxRect\&}{ rect}}
 
@@ -136,23 +190,27 @@ Subtracts a region from this region.
 
 \wxheading{Return value}
 
-{\tt TRUE} if successful, {\tt FALSE} otherwise.
+{\tt true} if successful, {\tt false} otherwise.
 
 \wxheading{Remarks}
 
 This operation combines the parts of 'this' region that are not part of the second region.
 The result is stored in this region.
 
+
 \membersection{wxRegion::Offset}\label{wxregionoffset}
 
 \func{bool}{Offset}{\param{wxCoord}{ x}, \param{wxCoord}{ y}}
 
+\func{bool}{Offset}{\param{const wxPoint\& }{ pt}}
+
 Moves the region by the specified offsets in horizontal and vertical
 directions.
 
 \wxheading{Return value}
 
-{\tt TRUE} if successful, {\tt FALSE} otherwise (the region is unchanged then).
+{\tt true} if successful, {\tt false} otherwise (the region is unchanged then).
+
 
 \membersection{wxRegion::Union}\label{wxregionunion}
 
@@ -168,15 +226,31 @@ Finds the union of this region and another, rectangular region.
 
 Finds the union of this region and another region.
 
+\func{bool}{Union}{\param{const wxBitmap\&}{ bmp}}
+
+Finds the union of this region and the non-transparent pixels of a
+bitmap. Bitmap's mask is used to determine transparency. If the bitmap doesn't
+have a mask, solid rectangle of bitmap's dimensions is used.
+
+\func{bool}{Union}{\param{const wxBitmap\&}{ bmp},
+                  \param{const wxColour\&}{ transColour},
+                  \param{int}{ tolerance = 0}}
+
+Finds the union of this region and the non-transparent pixels of a
+bitmap. Colour to be treated as transparent is specified in the
+\arg{transColour} argument, along with an
+optional colour tolerance value.
+
 \wxheading{Return value}
 
-{\tt TRUE} if successful, {\tt FALSE} otherwise.
+{\tt true} if successful, {\tt false} otherwise.
 
 \wxheading{Remarks}
 
 This operation creates a region that combines all of this region and the second region.
 The result is stored in this region.
 
+
 \membersection{wxRegion::Xor}\label{wxregionxor}
 
 \func{bool}{Xor}{\param{wxCoord}{ x}, \param{wxCoord}{ y}, \param{wxCoord}{ width}, \param{wxCoord}{ height}}
@@ -193,18 +267,21 @@ Finds the Xor of this region and another region.
 
 \wxheading{Return value}
 
-{\tt TRUE} if successful, {\tt FALSE} otherwise.
+{\tt true} if successful, {\tt false} otherwise.
 
 \wxheading{Remarks}
 
 This operation creates a region that combines all of this region and the second region, except
 for any overlapping areas. The result is stored in this region.
 
+
 \membersection{wxRegion::operator $=$}\label{wxregionassign}
 
 \func{void}{operator $=$}{\param{const wxRegion\&}{ region}}
 
-Copies {\it region} by reference counting.
+Assignment operator, using \helpref{reference counting}{trefcount}.
+
+
 
 \section{\class{wxRegionIterator}}\label{wxregioniterator}
 
@@ -224,13 +301,18 @@ See \helpref{wxPaintEvent}{wxpaintevent} for an example of use.
 
 <wx/region.h>
 
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
 \wxheading{See also}
 
 \helpref{wxPaintEvent}{wxpaintevent}
 
 \latexignore{\rtfignore{\wxheading{Members}}}
 
-\membersection{wxRegionIterator::wxRegionIterator}
+
+\membersection{wxRegionIterator::wxRegionIterator}\label{wxregioniteratorctor}
 
 \func{}{wxRegionIterator}{\void}
 
@@ -240,55 +322,64 @@ Default constructor.
 
 Creates an iterator object given a region.
 
-\membersection{wxRegionIterator::GetX}
+
+\membersection{wxRegionIterator::GetX}\label{wxregioniteratorgetx}
 
 \constfunc{wxCoord}{GetX}{\void}
 
 Returns the x value for the current region.
 
-\membersection{wxRegionIterator::GetY}
+
+\membersection{wxRegionIterator::GetY}\label{wxregioniteratorgety}
 
 \constfunc{wxCoord}{GetY}{\void}
 
 Returns the y value for the current region.
 
-\membersection{wxRegionIterator::GetW}
+
+\membersection{wxRegionIterator::GetW}\label{wxregioniteratorgetw}
 
 \constfunc{wxCoord}{GetW}{\void}
 
 An alias for GetWidth.
 
-\membersection{wxRegionIterator::GetWidth}
 
-\constfunc{wxCoord}{GetWidth}{\void}
+\membersection{wxRegionIterator::GetHeight}\label{wxregioniteratorgetheight}
 
-Returns the width value for the current region.
+\constfunc{wxCoord}{GetHeight}{\void}
 
-\membersection{wxRegionIterator::GetH}
+Returns the height value for the current region.
 
-\constfunc{wxCoord}{GetH}{\void}
 
-An alias for GetHeight.
+\membersection{wxRegionIterator::GetH}\label{wxregioniteratorgeth}
 
-\membersection{wxRegionIterator::GetHeight}
+\constfunc{wxCoord}{GetH}{\void}
 
-\constfunc{wxCoord}{GetWidth}{\void}
+An alias for GetHeight.
 
-Returns the width value for the current region.
 
-\membersection{wxRegionIterator::GetRect}
+\membersection{wxRegionIterator::GetRect}\label{wxregioniteratorgetrect}
 
 \constfunc{wxRect}{GetRect}{\void}
 
 Returns the current rectangle.
 
-\membersection{wxRegionIterator::HaveRects}
+
+\membersection{wxRegionIterator::GetWidth}\label{wxregioniteratorgetwidth}
+
+\constfunc{wxCoord}{GetWidth}{\void}
+
+Returns the width value for the current region.
+
+
+\membersection{wxRegionIterator::HaveRects}\label{wxregioniteratorhaverects}
 
 \constfunc{bool}{HaveRects}{\void}
 
-Returns {\tt TRUE} if there are still some rectangles; otherwise returns {\tt FALSE}.
+Returns {\tt true} if there are still some rectangles; otherwise returns {\tt false}.
 
-\membersection{wxRegionIterator::Reset}
+
+\membersection{wxRegionIterator::Reset}\label{wxregioniteratorreset}
 
 \func{void}{Reset}{\void}
 
@@ -298,7 +389,8 @@ Resets the iterator to the beginning of the rectangles.
 
 Resets the iterator to the given region.
 
-\membersection{wxRegionIterator::operator $++$}
+
+\membersection{wxRegionIterator::operator $++$}\label{wxregioniteratorinc}
 
 \func{void}{operator $++$}{\void}
 
@@ -306,11 +398,12 @@ Increment operator. Increments the iterator to the next region.
 
 \pythonnote{A wxPython alias for this operator is called {\tt Next}.}
 
-\membersection{wxRegionIterator::operator bool}
+
+\membersection{wxRegionIterator::operator bool}\label{wxregioniteratorbool}
 
 \constfunc{}{operator bool}{\void}
 
-Returns {\tt TRUE} if there are still some rectangles; otherwise returns {\tt FALSE}.
+Returns {\tt true} if there are still some rectangles; otherwise returns {\tt false}.
 
 You can use this to test the iterator object as if it were of type bool.
 
