Always draw the selection of selected items, not just when they have

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

diff --git a/docs/latex/wx/dc.tex b/docs/latex/wx/dc.tex
index 6ee2cd24e6eda75ba4975c24ddb9c4a6e2087be6..c7242bf74f11f4dc0673f4b1e2798acf30870dfb 100644 (file)
--- a/docs/latex/wx/dc.tex
+++ b/docs/latex/wx/dc.tex
@@ -18,6 +18,12 @@ there are also versions which accept single {\tt wxPoint} parameter instead of
 two {\tt wxCoord} ones or {\tt wxPoint} and {\tt wxSize} instead of four of
 them.
 
+\wxheading{Support for Transparency / Alpha Channel}
+
+On Mac OS X when using Core Graphics (wx\_MAC\_USE\_CORE\_GRAPHICS set to 1) 
+colors with alpha are supported, so instances  {\tt wxPen} or  {\tt wxBrush} that are built from  {\tt wxColour} use
+the color's alpha values when stroking or filling.
+
 \wxheading{Derived from}
 
 \helpref{wxObject}{wxobject}
@@ -628,6 +634,20 @@ initially and only after calling \helpref{wxDC::SetFont}{wxdcsetfont} a valid
 font is returned.
 
 
+\membersection{wxDC::GetLayoutDirection}\label{wxdcgetlayoutdirection}
+
+\constfunc{wxLayoutDirection}{GetLayoutDirection}{\void}
+
+Gets the current layout direction of the device context. On platforms where RTL layout
+is supported, the return value will either be \texttt{wxLayout\_LeftToRight} or 
+\texttt{wxLayout\_RightToLeft}. If RTL layout is not supported, the return value will 
+be \texttt{wxLayout\_Default}.
+
+\wxheading{See also}
+
+\helpref{SetLayoutDirection}{wxdcsetlayoutdirection}
+
+
 \membersection{wxDC::GetLogicalFunction}\label{wxdcgetlogicalfunction}
 
 \func{int}{GetLogicalFunction}{\void}
@@ -750,10 +770,8 @@ dimension from the baseline of the font to the bottom of the
 descender, and {\it externalLeading} is any extra vertical space added
 to the font by the font designer (usually is zero).
 
-The optional parameter {\it font} specifies an alternative
-to the currently selected font: but note that this does not
-yet work under Windows, so you need to set a font for
-the device context first.
+If the optional parameter {\it font} is specified and valid, then it is used
+for the text extent calculation. Otherwise the currently selected font is.
 
 See also \helpref{wxFont}{wxfont}, \helpref{wxDC::SetFont}{wxdcsetfont}.
 
@@ -788,6 +806,35 @@ Gets the current user scale factor (set by \helpref{SetUserScale}{wxdcsetusersca
  array {\tt ( x, y )}}
 
 
+\membersection{wxDC::GradientFillConcentric}\label{wxdcgradientfillconcentric}
+
+\func{void}{GradientFillConcentric}{\param{const wxRect\&}{ rect}, \param{const wxColour\&}{ initialColour}, \param{const wxColour\&}{ destColour}}
+
+\func{void}{GradientFillConcentric}{\param{const wxRect\&}{ rect}, \param{const wxColour\&}{ initialColour}, \param{const wxColour\&}{ destColour}, \param{const wxPoint\& }{circleCenter}}
+
+Fill the area specified by rect with a radial gradient, starting from 
+\arg{initialColour} at the centre of the circle and fading to \arg{destColour} 
+on the circle outside.
+
+\arg{circleCenter} are the relative coordinates of centre of the circle in
+the specified \arg{rect}. If not specified, the cercle is placed at the
+centre of rect.
+
+\textbf{Note: } Currently this function is very slow, don't use it for
+real-time drawing.
+
+
+\membersection{wxDC::GradientFillLinear}\label{wxdcgradientfilllinear}
+
+\func{void}{GradientFillLinear}{\param{const wxRect\&}{ rect}, \param{const wxColour\&}{ initialColour}, \param{const wxColour\&}{ destColour}, \param{wxDirection}{ nDirection = wxEAST}}
+
+Fill the area specified by \arg{rect} with a linear gradient, starting from 
+\arg{initialColour} and eventually fading to \arg{destColour}. The 
+\arg{nDirection} specifies the direction of the colour change, default is to
+use \arg{initialColour} on the left part of the rectangle and 
+\arg{destColour} on the right one.
+
+
 \membersection{wxDC::LogicalToDeviceX}\label{wxdclogicaltodevicex}
 
 \func{wxCoord}{LogicalToDeviceX}{\param{wxCoord}{ x}}
@@ -850,7 +897,7 @@ Gets the minimum horizontal extent used in drawing commands so far.
 Gets the minimum vertical extent used in drawing commands so far.
 
 
-\membersection{wxDC::Ok}\label{wxdcok}
+\membersection{wxDC::IsOk}\label{wxdcisok}
 
 \func{bool}{Ok}{\void}
 
@@ -964,6 +1011,18 @@ should not pass {\tt wxNullFont} to this method.
 See also \helpref{wxFont}{wxfont}.
 
 
+\membersection{wxDC::SetLayoutDirection}\label{wxdcsetlayoutdirection}
+
+\func{void}{SetLayoutDirection}{\param{wxLayoutDirection}{ dir}}
+
+Sets the current layout direction for the device context. \arg{dir} may be either
+\texttt{wxLayout\_Default}, \texttt{wxLayout\_LeftToRight} or \texttt{wxLayout\_RightToLeft}.
+
+\wxheading{See also}
+
+\helpref{GetLayoutDirection}{wxdcgetlayoutdirection}
+
+
 \membersection{wxDC::SetLogicalFunction}\label{wxdcsetlogicalfunction}
 
 \func{void}{SetLogicalFunction}{\param{int}{ function}}
@@ -1095,40 +1154,3 @@ Message is a message to show while printing.
 
 Starts a document page (only relevant when outputting to a printer).
 
-\section{\class{wxDCClipper}}\label{wxdcclipper}
-
-This is a small helper class which sets the specified DC to its constructor
-clipping region and then automatically destroys it in its destructor. Using
-it ensures that an unwanted clipping region is not left set on the DC.
-
-\wxheading{Derived from}
-
-No base class
-
-\wxheading{Include files}
-
-<wx/dc.h>
-
-\wxheading{See also}
-
-\helpref{wxDC}{wxdc}
-
-\latexignore{\rtfignore{\wxheading{Members}}}
-
-
-\membersection{wxDCClipper::wxDCClipper}\label{wxdcclipperctor}
-
-\func{}{wxDCClipper}{\param{wxDC\& }{dc}, \param{wxCoord }{x},\param{wxCoord }{y},\param{wxCoord }{w},\param{wxCoord }{h},}
-
-\func{}{wxDCClipper}{\param{wxDC\& }{dc}, \param{const wxRect\&}{ rect}}
-
-Constructor: sets the clipping region for the given device context to the
-specified rectangle.
-
-
-\membersection{wxDCClipper::\destruct{wxDCClipper}}\label{wxdcclipperdtor}
-
-\func{}{\destruct{wxDCClipper}}{\void}
-
-Destructor: destroys the clipping region set in the constructor.
-