View Source wxGraphicsRenderer (wx v2.4.3)
A wxGraphicsRenderer is the instance corresponding to the rendering engine used.
There may be multiple instances on a system, if there are different rendering engines
present, but there is always only one instance per engine. This instance is pointed back
to by all objects created by it (wxGraphicsContext, wxGraphicsPath etc.) and can
be retrieved through their wxGraphicsObject:getRenderer/1 method. Therefore you can create an additional instance of a
path etc. by calling wxGraphicsObject:getRenderer/1 and then using the appropriate CreateXXX() function of that renderer.
wxWidgets docs: wxGraphicsRenderer
Summary
Functions
Creates a native brush from a wxBrush.
Creates a wxGraphicsContext from a wxWindowDC.
Equivalent to createFont(This, Font, []).
Creates a native graphics font from a wxFont and a text colour.
Creates a graphics font with the given characteristics.
Creates a native brush with a linear gradient.
Equivalent to createMatrix(This, []).
Creates a native affine transformation matrix from the passed in values.
Creates a native graphics path which is initially empty.
Creates a native brush with a radial gradient.
Returns the default renderer on this platform.
Types
-type wxGraphicsRenderer() :: wx:wx_object().
Functions
-spec createBrush(This, Brush) -> wxGraphicsBrush:wxGraphicsBrush() when This :: wxGraphicsRenderer(), Brush :: wxBrush:wxBrush().
Creates a native brush from a wxBrush.
-spec createContext(This, WindowDC) -> wxGraphicsContext:wxGraphicsContext() when This :: wxGraphicsRenderer(), WindowDC :: wxWindowDC:wxWindowDC() | wxWindow:wxWindow() | wxMemoryDC:wxMemoryDC().
Creates a wxGraphicsContext from a wxWindowDC.
-spec createFont(This, Font) -> wxGraphicsFont:wxGraphicsFont() when This :: wxGraphicsRenderer(), Font :: wxFont:wxFont().
Equivalent to createFont(This, Font, []).
-spec createFont(This, SizeInPixels, Facename) -> wxGraphicsFont:wxGraphicsFont() when This :: wxGraphicsRenderer(), SizeInPixels :: number(), Facename :: unicode:chardata(); (This, Font, [Option]) -> wxGraphicsFont:wxGraphicsFont() when This :: wxGraphicsRenderer(), Font :: wxFont:wxFont(), Option :: {col, wx:wx_colour()}.
Creates a native graphics font from a wxFont and a text colour.
-spec createFont(This, SizeInPixels, Facename, [Option]) -> wxGraphicsFont:wxGraphicsFont() when This :: wxGraphicsRenderer(), SizeInPixels :: number(), Facename :: unicode:chardata(), Option :: {flags, integer()} | {col, wx:wx_colour()}.
Creates a graphics font with the given characteristics.
If possible, the createFont/4 overload taking wxFont should be used instead. The main advantage
of this overload is that it can be used without X server connection under Unix when using Cairo.
Since: 2.9.3
-spec createLinearGradientBrush(This, X1, Y1, X2, Y2, Stops) -> wxGraphicsBrush:wxGraphicsBrush() when This :: wxGraphicsRenderer(), X1 :: number(), Y1 :: number(), X2 :: number(), Y2 :: number(), Stops :: wxGraphicsGradientStops:wxGraphicsGradientStops().
Creates a native brush with a linear gradient.
Stops support is new since wxWidgets 2.9.1, previously only the start and end colours could be specified.
The ability to apply a transformation matrix to the gradient was added in 3.1.3
-spec createMatrix(This) -> wxGraphicsMatrix:wxGraphicsMatrix() when This :: wxGraphicsRenderer().
Equivalent to createMatrix(This, []).
-spec createMatrix(This, [Option]) -> wxGraphicsMatrix:wxGraphicsMatrix() when This :: wxGraphicsRenderer(), Option :: {a, number()} | {b, number()} | {c, number()} | {d, number()} | {tx, number()} | {ty, number()}.
Creates a native affine transformation matrix from the passed in values.
The defaults result in an identity matrix.
-spec createPath(This) -> wxGraphicsPath:wxGraphicsPath() when This :: wxGraphicsRenderer().
Creates a native graphics path which is initially empty.
createRadialGradientBrush(This, StartX, StartY, EndX, EndY, Radius, Stops)
View Source-spec createRadialGradientBrush(This, StartX, StartY, EndX, EndY, Radius, Stops) -> wxGraphicsBrush:wxGraphicsBrush() when This :: wxGraphicsRenderer(), StartX :: number(), StartY :: number(), EndX :: number(), EndY :: number(), Radius :: number(), Stops :: wxGraphicsGradientStops:wxGraphicsGradientStops().
Creates a native brush with a radial gradient.
Stops support is new since wxWidgets 2.9.1, previously only the start and end colours could be specified.
The ability to apply a transformation matrix to the gradient was added in 3.1.3
-spec getDefaultRenderer() -> wxGraphicsRenderer().
Returns the default renderer on this platform.
On macOS this is the Core Graphics (a.k.a. Quartz 2D) renderer, on MSW the GDIPlus renderer, and on GTK we currently default to the Cairo renderer.