Spacing tweak

[wxWidgets.git] / docs / latex / wx / rect.tex

diff --git a/docs/latex/wx/rect.tex b/docs/latex/wx/rect.tex
index 729b214952dd712af2038d768456aef3143473e4..4046c7207aa1ba17a1afc4c7618c07248d1bd366 100644 (file)
--- a/docs/latex/wx/rect.tex
+++ b/docs/latex/wx/rect.tex
@@ -68,6 +68,19 @@ Width member.
 Height member.
 
 
+\membersection{wxRect::CentreIn}\label{wxrectcentrein}
+
+\constfunc{wxRect}{CentreIn}{\param{const wxRect\& }{r}, \param{int }{dir = wxBOTH}}
+
+\constfunc{wxRect}{CenterIn}{\param{const wxRect\& }{r}, \param{int }{dir = wxBOTH}}
+
+Returns the rectangle having the same size as this one but centered relatively
+to the given rectangle \arg{r}. By default, rectangle is centred in both
+directions but if \arg{dir} includes only \texttt{wxVERTICAL} or only 
+\texttt{wxHORIZONTAL} flag, then it is only centered in this direction while
+the other component of its position remains unchanged.
+
+
 \membersection{wxRect::Deflate}\label{wxrectdeflate}
 
 \func{void}{Deflate}{\param{wxCoord }{dx}, \param{wxCoord }{dy}}
@@ -76,14 +89,11 @@ Height member.
 
 \constfunc{wxRect}{Deflate}{\param{wxCoord }{dx}, \param{wxCoord }{dy}}
 
-Decrease the rectangle size by {\it dx} in x direction and {\it dy} in y
-direction. Both (or one of) parameters may be negative to increase the
-rectngle size. This method is the opposite of \helpref{Inflate}{wxrectinflate}.
-
-The second form uses the same {\it diff} for both {\it dx} and {\it dy}.
+Decrease the rectangle size.
 
-The first two versions modify the rectangle in place, the last one returns a
-new rectangle leaving this one unchanged.
+This method is the opposite from \helpref{Inflate}{wxrectinflate}:
+Deflate(a, b) is equivalent to Inflate(-a, -b).
+Please refer to \helpref{Inflate}{wxrectinflate} for full description.
 
 \wxheading{See also}
 
@@ -129,7 +139,7 @@ Gets the topleft position of the rectangle. (Same as GetPosition).
 
 \constfunc{wxPoint}{GetBottomRight}{\void}
 
-Gets the the bottom right position. Returns the bottom right point inside the rectangle.
+Gets the bottom right position. Returns the bottom right point inside the rectangle.
 
 
 \membersection{wxRect::GetRight}\label{wxrectgetright}
@@ -145,6 +155,10 @@ Gets the right point of the rectangle.
 
 Gets the size.
 
+\wxheading{See also}
+
+\helpref{wxRect::SetSize}{wxrectsetsize}
+
 
 \membersection{wxRect::GetTop}\label{wxrectgettop}
 
@@ -182,15 +196,39 @@ Gets the y member.
 
 \constfunc{wxRect}{Inflate}{\param{wxCoord }{dx}, \param{wxCoord }{dy}}
 
-Increase the rectangle size by {\it dx} in x direction and {\it dy} in y
-direction. Both (or one of) parameters may be negative to decrease the
-rectangle size.
+Increases the size of the rectangle.
 
 The second form uses the same {\it diff} for both {\it dx} and {\it dy}.
 
 The first two versions modify the rectangle in place, the last one returns a
 new rectangle leaving this one unchanged.
 
+The left border is moved farther left and the right border is moved farther
+right by {\it dx}. The upper border is moved farther up and the bottom border
+is moved farther down by {\it dy}. (Note the the width and height of the
+rectangle thus change by 2*{\it dx} and 2*{\it dy}, respectively.) If one or
+both of {\it dx} and {\it dy} are negative, the opposite happens: the rectangle
+size decreases in the respective direction.
+
+Inflating and deflating behaves ``naturally''. Defined more precisely, that
+means:
+\begin{enumerate}
+    \item ``Real'' inflates (that is, {\it dx} and/or {\it dy} >= 0) are not
+        constrained. Thus inflating a rectangle can cause its upper left corner
+        to move into the negative numbers. (the versions prior to 2.5.4 forced
+        the top left coordinate to not fall below (0, 0), which implied a
+        forced move of the rectangle.)
+
+    \item Deflates are clamped to not reduce the width or height of the
+        rectangle below zero. In such cases, the top-left corner is nonetheless
+        handled properly. For example, a rectangle at (10, 10) with size (20,
+        40) that is inflated by (-15, -15) will become located at (20, 25) at
+        size (0, 10). Finally, observe that the width and height are treated
+        independently. In the above example, the width is reduced by 20,
+        whereas the height is reduced by the full 30 (rather than also stopping
+        at 20, when the width reached zero).
+\end{enumerate}
+
 \wxheading{See also}
 
 \helpref{Deflate}{wxrectdeflate}
@@ -214,6 +252,14 @@ Returns {\tt true} if this rectangle has a non empty intersection with the
 rectangle {\it rect} and {\tt false} otherwise.
 
 
+\membersection{wxRect::IsEmpty}\label{wxrectisempty}
+
+\constfunc{bool}{IsEmpty}{}
+
+Returns {\tt true} if this rectangle has a width or height less than or equal to 
+0 and {\tt false} otherwise.
+
+
 \membersection{wxRect::Offset}\label{wxrectoffset}
 
 \func{void}{Offset}{\param{wxCoord }{dx}, \param{wxCoord }{dy}}
@@ -232,6 +278,17 @@ bottom, otherwise it is moved to the left or top respectively.
 Sets the height.
 
 
+\membersection{wxRect::SetSize}\label{wxrectsetsize}
+
+\func{void}{SetSize}{\param{const wxSize\&}{ s}}
+
+Sets the size.
+
+\wxheading{See also}
+
+\helpref{wxRect::GetSize}{wxrectgetsize}
+
+
 \membersection{wxRect::SetWidth}\label{wxrectsetwidth}
 
 \func{void}{SetWidth}{\param{int}{ width}}