///////////////////////////////////////////////////////////////////////////// // Name: _dc.i // Purpose: SWIG interface defs for wxDC and releated classes // // Author: Robin Dunn // // Created: 7-July-1997 // RCS-ID: $Id$ // Copyright: (c) 2003 by Total Control Software // Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// // Not a %module //--------------------------------------------------------------------------- %{ #include "wx/wxPython/pydrawxxx.h" %} // TODO: 1. wrappers for wxDrawObject and wxDC::DrawObject //--------------------------------------------------------------------------- %typemap(in) (int points, wxPoint* points_array ) { $2 = wxPoint_LIST_helper($input, &$1); if ($2 == NULL) SWIG_fail; } %typemap(freearg) (int points, wxPoint* points_array ) { if ($2) delete [] $2; } //--------------------------------------------------------------------------- %newgroup; DocStr(wxDC, "A wx.DC is a device context onto which graphics and text can be drawn. It is intended to represent a number of output devices in a generic way, so a window can have a device context associated with it, and a printer also has a device context. In this way, the same piece of code may write to a number of different devices, if the device context is used as a parameter. Derived types of wxDC have documentation for specific features only, so refer to this section for most device context information. The wx.DC class is abstract and can not be instantiated, you must use one of the derived classes instead. Which one will depend on the situation in which it is used.", ""); class wxDC : public wxObject { public: // wxDC(); **** abstract base class, can't instantiate. ~wxDC(); %pythoncode { %# These have been deprecated in wxWidgets. Since they never %# really did anything to begin with, just make them be NOPs. def BeginDrawing(self): pass def EndDrawing(self): pass } // TODO virtual void DrawObject(wxDrawObject* drawobject); DocStr( FloodFill, "Flood fills the device context starting from the given point, using the current brush colour, and using a style: - **wxFLOOD_SURFACE**: the flooding occurs until a colour other than the given colour is encountered. - **wxFLOOD_BORDER**: the area to be flooded is bounded by the given colour. Returns False if the operation failed. Note: The present implementation for non-Windows platforms may fail to find colour borders if the pixels do not match the colour exactly. However the function will still return true.", ""); bool FloodFill(wxCoord x, wxCoord y, const wxColour& col, int style = wxFLOOD_SURFACE); %Rename(FloodFillPoint, bool, FloodFill(const wxPoint& pt, const wxColour& col, int style = wxFLOOD_SURFACE)); // fill the area specified by rect with a radial gradient, starting from // initialColour in the centre of the cercle and fading to destColour. DocDeclStr( void , GradientFillConcentric(const wxRect& rect, const wxColour& initialColour, const wxColour& destColour, const wxPoint& circleCenter), "Fill the area specified by rect with a radial gradient, starting from initialColour in the center of the circle and fading to destColour on the outside of the circle. The circleCenter argument is the relative coordinants of the center of the circle in the specified rect. Note: Currently this function is very slow, don't use it for real-time drawing.", ""); DocDeclStr( void , GradientFillLinear(const wxRect& rect, const wxColour& initialColour, const wxColour& destColour, wxDirection nDirection = wxEAST), "Fill the area specified by rect with a linear gradient, starting from initialColour and eventually fading to destColour. The nDirection parameter specifies the direction of the colour change, default is to use initialColour on the left part of the rectangle and destColour on the right side.", ""); DocStr( GetPixel, "Gets the colour at the specified location on the DC.",""); %extend { wxColour GetPixel(wxCoord x, wxCoord y) { wxColour col; self->GetPixel(x, y, &col); return col; } wxColour GetPixelPoint(const wxPoint& pt) { wxColour col; self->GetPixel(pt, &col); return col; } } DocStr( DrawLine, "Draws a line from the first point to the second. The current pen is used for drawing the line. Note that the second point is *not* part of the line and is not drawn by this function (this is consistent with the behaviour of many other toolkits).", ""); void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2); %Rename(DrawLinePoint, void, DrawLine(const wxPoint& pt1, const wxPoint& pt2)); DocStr( CrossHair, "Displays a cross hair using the current pen. This is a vertical and horizontal line the height and width of the window, centred on the given point.", ""); void CrossHair(wxCoord x, wxCoord y); %Rename(CrossHairPoint, void, CrossHair(const wxPoint& pt)); DocStr( DrawArc, "Draws an arc of a circle, centred on the *center* point (xc, yc), from the first point to the second. The current pen is used for the outline and the current brush for filling the shape. The arc is drawn in an anticlockwise direction from the start point to the end point.", ""); void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc); %Rename(DrawArcPoint, void, DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& center)); DocStr( DrawCheckMark, "Draws a check mark inside the given rectangle.", ""); void DrawCheckMark(wxCoord x, wxCoord y, wxCoord width, wxCoord height); %Rename(DrawCheckMarkRect, void, DrawCheckMark(const wxRect& rect)); DocStr( DrawEllipticArc, "Draws an arc of an ellipse, with the given rectangle defining the bounds of the ellipse. The current pen is used for drawing the arc and the current brush is used for drawing the pie. The *start* and *end* parameters specify the start and end of the arc relative to the three-o'clock position from the center of the rectangle. Angles are specified in degrees (360 is a complete circle). Positive values mean counter-clockwise motion. If start is equal to end, a complete ellipse will be drawn.", ""); void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, double start, double end); %Rename(DrawEllipticArcPointSize, void, DrawEllipticArc(const wxPoint& pt, const wxSize& sz, double start, double end)); DocStr( DrawPoint, "Draws a point using the current pen.", ""); void DrawPoint(wxCoord x, wxCoord y); %Rename(DrawPointPoint, void, DrawPoint(const wxPoint& pt)); DocStr( DrawRectangle, "Draws a rectangle with the given top left corner, and with the given size. The current pen is used for the outline and the current brush for filling the shape.", ""); void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height); %Rename(DrawRectangleRect,void, DrawRectangle(const wxRect& rect)); %Rename(DrawRectanglePointSize, void, DrawRectangle(const wxPoint& pt, const wxSize& sz)); DocStr( DrawRoundedRectangle, "Draws a rectangle with the given top left corner, and with the given size. The corners are quarter-circles using the given radius. The current pen is used for the outline and the current brush for filling the shape. If radius is positive, the value is assumed to be the radius of the rounded corner. If radius is negative, the absolute value is assumed to be the proportion of the smallest dimension of the rectangle. This means that the corner can be a sensible size relative to the size of the rectangle, and also avoids the strange effects X produces when the corners are too big for the rectangle.", ""); void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius); %Rename(DrawRoundedRectangleRect, void, DrawRoundedRectangle(const wxRect& r, double radius)); %Rename(DrawRoundedRectanglePointSize, void, DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz, double radius)); DocStr( DrawCircle, "Draws a circle with the given center point and radius. The current pen is used for the outline and the current brush for filling the shape.", " :see: `DrawEllipse`"); void DrawCircle(wxCoord x, wxCoord y, wxCoord radius); %Rename(DrawCirclePoint, void, DrawCircle(const wxPoint& pt, wxCoord radius)); DocStr( DrawEllipse, "Draws an ellipse contained in the specified rectangle. The current pen is used for the outline and the current brush for filling the shape.", " :see: `DrawCircle`"); void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height); %Rename(DrawEllipseRect, void, DrawEllipse(const wxRect& rect)); %Rename(DrawEllipsePointSize, void, DrawEllipse(const wxPoint& pt, const wxSize& sz)); DocStr( DrawIcon, "Draw an icon on the display (does nothing if the device context is PostScript). This can be the simplest way of drawing bitmaps on a window.", ""); void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y); %Rename(DrawIconPoint, void, DrawIcon(const wxIcon& icon, const wxPoint& pt)); DocStr( DrawBitmap, "Draw a bitmap on the device context at the specified point. If *transparent* is true and the bitmap has a transparency mask, (or alpha channel on the platforms that support it) then the bitmap will be drawn transparently.", " When drawing a mono-bitmap, the current text foreground colour will be used to draw the foreground of the bitmap (all bits set to 1), and the current text background colour to draw the background (all bits set to 0). :see: `SetTextForeground`, `SetTextBackground` and `wx.MemoryDC`"); void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask = false); %Rename(DrawBitmapPoint, void, DrawBitmap(const wxBitmap &bmp, const wxPoint& pt, bool useMask = false)); DocStr( DrawText, "Draws a text string at the specified point, using the current text font, and the current text foreground and background colours. The coordinates refer to the top-left corner of the rectangle bounding the string. See `GetTextExtent` for how to get the dimensions of a text string, which can be used to position the text more precisely. **NOTE**: under wxGTK the current logical function is used by this function but it is ignored by wxMSW. Thus, you should avoid using logical functions with this function in portable programs.", " :see: `DrawRotatedText`"); void DrawText(const wxString& text, wxCoord x, wxCoord y); %Rename(DrawTextPoint, void, DrawText(const wxString& text, const wxPoint& pt)); DocStr( DrawRotatedText, "Draws the text rotated by *angle* degrees, if supported by the platform. **NOTE**: Under Win9x only TrueType fonts can be drawn by this function. In particular, a font different from ``wx.NORMAL_FONT`` should be used as the it is not normally a TrueType font. ``wx.SWISS_FONT`` is an example of a font which is."," :see: `DrawText`"); void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle); %Rename(DrawRotatedTextPoint, void, DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)); DocDeclStr( bool , Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, wxDC *source, wxCoord xsrc, wxCoord ysrc, int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1), "Copy from a source DC to this DC. Parameters specify the destination coordinates, size of area to copy, source DC, source coordinates, logical function, whether to use a bitmap mask, and mask source position.", " :param xdest: Destination device context x position. :param ydest: Destination device context y position. :param width: Width of source area to be copied. :param height: Height of source area to be copied. :param source: Source device context. :param xsrc: Source device context x position. :param ysrc: Source device context y position. :param rop: Logical function to use: see `SetLogicalFunction`. :param useMask: If true, Blit does a transparent blit using the mask that is associated with the bitmap selected into the source device context. :param xsrcMask: Source x position on the mask. If both xsrcMask and ysrcMask are -1, xsrc and ysrc will be assumed for the mask source position. :param ysrcMask: Source y position on the mask. "); DocDeclStrName( bool , Blit(const wxPoint& destPt, const wxSize& sz, wxDC *source, const wxPoint& srcPt, int rop = wxCOPY, bool useMask = false, const wxPoint& srcPtMask = wxDefaultPosition), "Copy from a source DC to this DC. Parameters specify the destination coordinates, size of area to copy, source DC, source coordinates, logical function, whether to use a bitmap mask, and mask source position.", " :param destPt: Destination device context position. :param sz: Size of source area to be copied. :param source: Source device context. :param srcPt: Source device context position. :param rop: Logical function to use: see `SetLogicalFunction`. :param useMask: If true, Blit does a transparent blit using the mask that is associated with the bitmap selected into the source device context. :param srcPtMask: Source position on the mask. ", BlitPointSize); DocDeclStr( bool , StretchBlit(wxCoord dstX, wxCoord dstY, wxCoord dstWidth, wxCoord dstHeight, wxDC *source, wxCoord srcX, wxCoord srcY, wxCoord srcWidth, wxCoord srcHeight, int rop = wxCOPY, bool useMask = false, wxCoord srcMaskX = wxDefaultCoord, wxCoord srcMaskY = wxDefaultCoord), "Copy from a source DC to this DC, specifying the destination coordinates, destination size, source DC, source coordinates, size of source area to copy, logical function, whether to use a bitmap mask, and mask source position.", " :param xdest: Destination device context x position. :param ydest: Destination device context y position. :param dstWidth: Width of destination area. :param dstHeight: Height of destination area. :param source: Source device context. :param xsrc: Source device context x position. :param ysrc: Source device context y position. :param srcWidth: Width of source area to be copied. :param srcHeight: Height of source area to be copied. :param logicalFunc: Logical function to use: see `SetLogicalFunction`. :param useMask: If true, StretchBlit does a transparent blit using the mask that is associated with the bitmap selected into the source device context. :param xsrcMask: Source x position on the mask. If both xsrcMask and ysrcMask are -1, xsrc and ysrc will be assumed for the mask source position. Currently only implemented on Windows. :param ysrcMask: Source y position on the mask. "); DocDeclStrName( bool , StretchBlit(const wxPoint& dstPt, const wxSize& dstSize, wxDC *source, const wxPoint& srcPt, const wxSize& srcSize, int rop = wxCOPY, bool useMask = false, const wxPoint& srcMaskPt = wxDefaultPosition), "Copy from a source DC to this DC, specifying the destination coordinates, destination size, source DC, source coordinates, size of source area to copy, logical function, whether to use a bitmap mask, and mask source position. This version is the same as `StretchBlit` except `wx.Point` and `wx.Size` objects are used instead of individual position and size components.", "", StretchBlitPointSize); DocDeclStr( wxBitmap , GetAsBitmap(const wxRect *subrect = NULL) const, "", ""); DocStr( SetClippingRegion, "Sets the clipping region for this device context to the intersection of the given region described by the parameters of this method and the previously set clipping region. You should call `DestroyClippingRegion` if you want to set the clipping region exactly to the region specified. The clipping region is an area to which drawing is restricted. Possible uses for the clipping region are for clipping text or for speeding up window redraws when only a known area of the screen is damaged.", " :see: `DestroyClippingRegion`, `wx.Region`"); void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height); %Rename(SetClippingRegionPointSize, void, SetClippingRegion(const wxPoint& pt, const wxSize& sz)); %Rename(SetClippingRegionAsRegion, void, SetClippingRegion(const wxRegion& region)); %Rename(SetClippingRect, void, SetClippingRegion(const wxRect& rect)); DocDeclAStr( void , DrawLines(int points, wxPoint* points_array, wxCoord xoffset = 0, wxCoord yoffset = 0), "DrawLines(self, List points, int xoffset=0, int yoffset=0)", "Draws lines using a sequence of `wx.Point` objects, adding the optional offset coordinate. The current pen is used for drawing the lines.", ""); DocDeclAStr( void , DrawPolygon(int points, wxPoint* points_array, wxCoord xoffset = 0, wxCoord yoffset = 0, int fillStyle = wxODDEVEN_RULE), "DrawPolygon(self, List points, int xoffset=0, int yoffset=0, int fillStyle=ODDEVEN_RULE)", "Draws a filled polygon using a sequence of `wx.Point` objects, adding the optional offset coordinate. The last argument specifies the fill rule: ``wx.ODDEVEN_RULE`` (the default) or ``wx.WINDING_RULE``. The current pen is used for drawing the outline, and the current brush for filling the shape. Using a transparent brush suppresses filling. Note that wxWidgets automatically closes the first and last points.", ""); // TODO: Figure out a good typemap for this... // Convert the first 3 args from a sequence of sequences? // void DrawPolyPolygon(int n, int count[], wxPoint points[], // wxCoord xoffset = 0, wxCoord yoffset = 0, // int fillStyle = wxODDEVEN_RULE); DocDeclStr( void , DrawLabel(const wxString& text, const wxRect& rect, int alignment = wxALIGN_LEFT | wxALIGN_TOP, int indexAccel = -1), "Draw *text* within the specified rectangle, abiding by the alignment flags. Will additionally emphasize the character at *indexAccel* if it is not -1.", " :see: `DrawImageLabel`"); %extend { DocStr(DrawImageLabel, "Draw *text* and an image (which may be ``wx.NullBitmap`` to skip drawing it) within the specified rectangle, abiding by the alignment flags. Will additionally emphasize the character at *indexAccel* if it is not -1. Returns the bounding rectangle.", ""); wxRect DrawImageLabel(const wxString& text, const wxBitmap& image, const wxRect& rect, int alignment = wxALIGN_LEFT | wxALIGN_TOP, int indexAccel = -1) { wxRect rv; self->DrawLabel(text, image, rect, alignment, indexAccel, &rv); return rv; } } DocDeclAStr( void , DrawSpline(int points, wxPoint* points_array), "DrawSpline(self, List points)", "Draws a spline between all given control points, (a list of `wx.Point` objects) using the current pen. The spline is drawn using a series of lines, using an algorithm taken from the X drawing program 'XFIG'.", ""); // global DC operations // -------------------- DocDeclStr( virtual void , Clear(), "Clears the device context using the current background brush.", ""); DocDeclStr( virtual bool , StartDoc(const wxString& message), "Starts a document (only relevant when outputting to a printer). *Message* is a message to show whilst printing.", ""); DocDeclStr( virtual void , EndDoc(), "Ends a document (only relevant when outputting to a printer).", ""); DocDeclStr( virtual void , StartPage(), "Starts a document page (only relevant when outputting to a printer).", ""); DocDeclStr( virtual void , EndPage(), "Ends a document page (only relevant when outputting to a printer).", ""); // set objects to use for drawing // ------------------------------ DocDeclStr( virtual void , SetFont(const wxFont& font), "Sets the current font for the DC. It must be a valid font, in particular you should not pass ``wx.NullFont`` to this method."," :see: `wx.Font`"); DocDeclStr( virtual void , SetPen(const wxPen& pen), "Sets the current pen for the DC. If the argument is ``wx.NullPen``, the current pen is selected out of the device context, and the original pen restored.", " :see: `wx.Pen`"); DocDeclStr( virtual void , SetBrush(const wxBrush& brush), "Sets the current brush for the DC. If the argument is ``wx.NullBrush``, the current brush is selected out of the device context, and the original brush restored, allowing the current brush to be destroyed safely."," :see: `wx.Brush`"); DocDeclStr( virtual void , SetBackground(const wxBrush& brush), "Sets the current background brush for the DC.", ""); DocDeclStr( virtual void , SetBackgroundMode(int mode), "*mode* may be one of ``wx.SOLID`` and ``wx.TRANSPARENT``. This setting determines whether text will be drawn with a background colour or not.", ""); DocDeclStr( virtual void , SetPalette(const wxPalette& palette), "If this is a window DC or memory DC, assigns the given palette to the window or bitmap associated with the DC. If the argument is ``wx.NullPalette``, the current palette is selected out of the device context, and the original palette restored.", " :see: `wx.Palette`"); DocDeclStr( virtual void , DestroyClippingRegion(), "Destroys the current clipping region so that none of the DC is clipped.", " :see: `SetClippingRegion`"); DocDeclAStr( void, GetClippingBox(wxCoord *OUTPUT, wxCoord *OUTPUT, wxCoord *OUTPUT, wxCoord *OUTPUT) const, "GetClippingBox() -> (x, y, width, height)", "Gets the rectangle surrounding the current clipping region.", ""); %extend { DocStr( GetClippingRect, "Gets the rectangle surrounding the current clipping region.", ""); wxRect GetClippingRect() { wxRect rect; self->GetClippingBox(rect); return rect; } } // text extent // ----------- DocDeclStr( virtual wxCoord , GetCharHeight() const, "Gets the character height of the currently set font.", ""); DocDeclStr( virtual wxCoord , GetCharWidth() const, "Gets the average character width of the currently set font.", ""); DocDeclAStr( void, GetTextExtent(const wxString& string, wxCoord *OUTPUT, wxCoord *OUTPUT), "GetTextExtent(wxString string) -> (width, height)", "Get the width and height of the text using the current font. Only works for single line strings.", ""); DocDeclAStrName( void, GetTextExtent(const wxString& string, wxCoord *OUTPUT, wxCoord *OUTPUT, wxCoord *OUTPUT, wxCoord* OUTPUT, wxFont* font = NULL), "GetFullTextExtent(wxString string, Font font=None) ->\n (width, height, descent, externalLeading)", "Get the width, height, decent and leading of the text using the current or specified font. Only works for single line strings.", "", GetFullTextExtent); // works for single as well as multi-line strings DocDeclAStr( void, GetMultiLineTextExtent(const wxString& text, wxCoord *OUTPUT, wxCoord *OUTPUT, wxCoord *OUTPUT, wxFont *font = NULL), "GetMultiLineTextExtent(wxString string, Font font=None) ->\n (width, height, lineHeight)", "Get the width, height, and line height of the text using the current or specified font. Works for single as well as multi-line strings.", ""); %extend { DocAStr(GetPartialTextExtents, "GetPartialTextExtents(self, text) -> [widths]", "Returns a list of integers such that each value is the distance in pixels from the begining of text to the coresponding character of *text*. The generic version simply builds a running total of the widths of each character using GetTextExtent, however if the various platforms have a native API function that is faster or more accurate than the generic implementation then it will be used instead.", ""); wxArrayInt GetPartialTextExtents(const wxString& text) { wxArrayInt widths; self->GetPartialTextExtents(text, widths); return widths; } } // size and resolution // ------------------- DocStr( GetSize, "This gets the horizontal and vertical resolution in device units. It can be used to scale graphics to fit the page. For example, if *maxX* and *maxY* represent the maximum horizontal and vertical 'pixel' values used in your application, the following code will scale the graphic to fit on the printer page:: w, h = dc.GetSize() scaleX = maxX*1.0 / w scaleY = maxY*1.0 / h dc.SetUserScale(min(scaleX,scaleY),min(scaleX,scaleY)) ", ""); wxSize GetSize(); DocDeclAName( void, GetSize( int *OUTPUT, int *OUTPUT ), "GetSizeTuple() -> (width, height)", GetSizeTuple); DocStr(GetSizeMM, "Get the DC size in milimeters.", ""); wxSize GetSizeMM() const; DocDeclAName( void, GetSizeMM( int *OUTPUT, int *OUTPUT ) const, "GetSizeMMTuple() -> (width, height)", GetSizeMMTuple); // coordinates conversions // ----------------------- DocDeclStr( wxCoord , DeviceToLogicalX(wxCoord x) const, "Convert device X coordinate to logical coordinate, using the current mapping mode.", ""); DocDeclStr( wxCoord , DeviceToLogicalY(wxCoord y) const, "Converts device Y coordinate to logical coordinate, using the current mapping mode.", ""); DocDeclStr( wxCoord , DeviceToLogicalXRel(wxCoord x) const, "Convert device X coordinate to relative logical coordinate, using the current mapping mode but ignoring the x axis orientation. Use this function for converting a width, for example.", ""); DocDeclStr( wxCoord , DeviceToLogicalYRel(wxCoord y) const, "Convert device Y coordinate to relative logical coordinate, using the current mapping mode but ignoring the y axis orientation. Use this function for converting a height, for example.", ""); DocDeclStr( wxCoord , LogicalToDeviceX(wxCoord x) const, "Converts logical X coordinate to device coordinate, using the current mapping mode.", ""); DocDeclStr( wxCoord , LogicalToDeviceY(wxCoord y) const, "Converts logical Y coordinate to device coordinate, using the current mapping mode.", ""); DocDeclStr( wxCoord , LogicalToDeviceXRel(wxCoord x) const, "Converts logical X coordinate to relative device coordinate, using the current mapping mode but ignoring the x axis orientation. Use this for converting a width, for example.", ""); DocDeclStr( wxCoord , LogicalToDeviceYRel(wxCoord y) const, "Converts logical Y coordinate to relative device coordinate, using the current mapping mode but ignoring the y axis orientation. Use this for converting a height, for example.", ""); // query DC capabilities // --------------------- virtual bool CanDrawBitmap() const; virtual bool CanGetTextExtent() const; DocDeclStr( virtual int , GetDepth() const, "Returns the colour depth of the DC.", ""); DocDeclStr( virtual wxSize , GetPPI() const, "Resolution in pixels per inch", ""); DocDeclStr( virtual bool , IsOk() const, "Returns true if the DC is ok to use.", ""); %pythoncode { Ok = IsOk } DocDeclStr( int , GetBackgroundMode() const, "Returns the current background mode, either ``wx.SOLID`` or ``wx.TRANSPARENT``."," :see: `SetBackgroundMode`"); DocDeclStr( const wxBrush& , GetBackground() const, "Gets the brush used for painting the background."," :see: `SetBackground`"); DocDeclStr( const wxBrush& , GetBrush() const, "Gets the current brush", ""); DocDeclStr( const wxFont& , GetFont() const, "Gets the current font", ""); DocDeclStr( const wxPen& , GetPen() const, "Gets the current pen", ""); DocDeclStr( const wxColour& , GetTextBackground() const, "Gets the current text background colour", ""); DocDeclStr( const wxColour& , GetTextForeground() const, "Gets the current text foreground colour", ""); DocDeclStr( virtual void , SetTextForeground(const wxColour& colour), "Sets the current text foreground colour for the DC.", ""); DocDeclStr( virtual void , SetTextBackground(const wxColour& colour), "Sets the current text background colour for the DC.", ""); DocDeclStr( int , GetMapMode() const, "Gets the current *mapping mode* for the device context ", ""); DocDeclStr( virtual void , SetMapMode(int mode), "The *mapping mode* of the device context defines the unit of measurement used to convert logical units to device units. The mapping mode can be one of the following: ================ ============================================= wx.MM_TWIPS Each logical unit is 1/20 of a point, or 1/1440 of an inch. wx.MM_POINTS Each logical unit is a point, or 1/72 of an inch. wx.MM_METRIC Each logical unit is 1 mm. wx.MM_LOMETRIC Each logical unit is 1/10 of a mm. wx.MM_TEXT Each logical unit is 1 pixel. ================ ============================================= "," Note that in X, text drawing isn't handled consistently with the mapping mode; a font is always specified in point size. However, setting the user scale (see `SetUserScale`) scales the text appropriately. In Windows, scalable TrueType fonts are always used; in X, results depend on availability of fonts, but usually a reasonable match is found. The coordinate origin is always at the top left of the screen/printer. Drawing to a Windows printer device context uses the current mapping mode, but mapping mode is currently ignored for PostScript output. "); DocDeclAStr( virtual void, GetUserScale(double *OUTPUT, double *OUTPUT) const, "GetUserScale(self) -> (xScale, yScale)", "Gets the current user scale factor (set by `SetUserScale`).", ""); DocDeclStr( virtual void , SetUserScale(double x, double y), "Sets the user scaling factor, useful for applications which require 'zooming'.", ""); DocDeclA( virtual void, GetLogicalScale(double *OUTPUT, double *OUTPUT), "GetLogicalScale() -> (xScale, yScale)"); virtual void SetLogicalScale(double x, double y); wxPoint GetLogicalOrigin() const; DocDeclAName( void, GetLogicalOrigin(wxCoord *OUTPUT, wxCoord *OUTPUT) const, "GetLogicalOriginTuple() -> (x,y)", GetLogicalOriginTuple); virtual void SetLogicalOrigin(wxCoord x, wxCoord y); %extend { void SetLogicalOriginPoint(const wxPoint& point) { self->SetLogicalOrigin(point.x, point.y); } } wxPoint GetDeviceOrigin() const; DocDeclAName( void, GetDeviceOrigin(wxCoord *OUTPUT, wxCoord *OUTPUT) const, "GetDeviceOriginTuple() -> (x,y)", GetDeviceOriginTuple); virtual void SetDeviceOrigin(wxCoord x, wxCoord y); %extend { void SetDeviceOriginPoint(const wxPoint& point) { self->SetDeviceOrigin(point.x, point.y); } } DocDeclStr( virtual void , SetAxisOrientation(bool xLeftRight, bool yBottomUp), "Sets the x and y axis orientation (i.e., the direction from lowest to highest values on the axis). The default orientation is the natural orientation, e.g. x axis from left to right and y axis from bottom up.", ""); DocDeclStr( int , GetLogicalFunction() const, "Gets the current logical function (set by `SetLogicalFunction`).", ""); DocDeclStr( virtual void , SetLogicalFunction(int function), "Sets the current logical function for the device context. This determines how a source pixel (from a pen or brush colour, or source device context if using `Blit`) combines with a destination pixel in the current device context. The possible values and their meaning in terms of source and destination pixel values are as follows: ================ ========================== wx.AND src AND dst wx.AND_INVERT (NOT src) AND dst wx.AND_REVERSE src AND (NOT dst) wx.CLEAR 0 wx.COPY src wx.EQUIV (NOT src) XOR dst wx.INVERT NOT dst wx.NAND (NOT src) OR (NOT dst) wx.NOR (NOT src) AND (NOT dst) wx.NO_OP dst wx.OR src OR dst wx.OR_INVERT (NOT src) OR dst wx.OR_REVERSE src OR (NOT dst) wx.SET 1 wx.SRC_INVERT NOT src wx.XOR src XOR dst ================ ========================== The default is wx.COPY, which simply draws with the current colour. The others combine the current colour and the background using a logical operation. wx.INVERT is commonly used for drawing rubber bands or moving outlines, since drawing twice reverts to the original colour. ", ""); DocDeclStr( void , ComputeScaleAndOrigin(), "Performs all necessary computations for given platform and context type after each change of scale and origin parameters. Usually called automatically internally after such changes. ", ""); // DocDeclStr( // virtual void , SetOptimization(bool optimize), // "If *optimize* is true this function sets optimization mode on. This // currently means that under X, the device context will not try to set a // pen or brush property if it is known to be set already. This approach // can fall down if non-wxWidgets code is using the same device context // or window, for example when the window is a panel on which the // windowing system draws panel items. The wxWidgets device context // 'memory' will now be out of step with reality. // Setting optimization off, drawing, then setting it back on again, is a // trick that must occasionally be employed.", ""); // DocDeclStr( // virtual bool , GetOptimization(), // "Returns true if device context optimization is on. See // `SetOptimization` for details.", ""); %pythoncode { def SetOptimization(self, optimize): pass def GetOptimization(self): return False SetOptimization = wx._deprecated(SetOptimization) GetOptimization = wx._deprecated(GetOptimization) } // bounding box // ------------ DocDeclStr( virtual void , CalcBoundingBox(wxCoord x, wxCoord y), "Adds the specified point to the bounding box which can be retrieved with `MinX`, `MaxX` and `MinY`, `MaxY` or `GetBoundingBox` functions.", ""); %extend { DocStr(CalcBoundingBoxPoint, "Adds the specified point to the bounding box which can be retrieved with `MinX`, `MaxX` and `MinY`, `MaxY` or `GetBoundingBox` functions.",""); void CalcBoundingBoxPoint(const wxPoint& point) { self->CalcBoundingBox(point.x, point.y); } } DocDeclStr( void , ResetBoundingBox(), "Resets the bounding box: after a call to this function, the bounding box doesn't contain anything.", ""); // Get the final bounding box of the PostScript or Metafile picture. DocDeclStr( wxCoord , MinX() const, "Gets the minimum horizontal extent used in drawing commands so far.", ""); DocDeclStr( wxCoord , MaxX() const, "Gets the maximum horizontal extent used in drawing commands so far.", ""); DocDeclStr( wxCoord , MinY() const, "Gets the minimum vertical extent used in drawing commands so far.", ""); DocDeclStr( wxCoord , MaxY() const, "Gets the maximum vertical extent used in drawing commands so far.", ""); DocAStr(GetBoundingBox, "GetBoundingBox() -> (x1,y1, x2,y2)", "Returns the min and max points used in drawing commands so far.", ""); %extend { void GetBoundingBox(int* OUTPUT, int* OUTPUT, int* OUTPUT, int* OUTPUT); // See below for implementation } %pythoncode { def __nonzero__(self): return self.IsOk() }; // RTL related functions // --------------------- DocDeclStr( virtual wxLayoutDirection , GetLayoutDirection() const, "Get the layout direction (LTR or RTL)_ for this dc. On platforms where RTL layout is supported, the return value will either be ``wx.Layout_LeftToRight`` or ``wx.Layout_RightToLeft``. ``wx.Layout_Default`` is returned if layout direction is not supported.", ""); DocDeclStr( virtual void , SetLayoutDirection(wxLayoutDirection dir), "Change the layout direction for this dc.", ""); #ifdef __WXMSW__ long GetHDC(); #endif %extend { // See drawlist.cpp for impplementaion of these... PyObject* _DrawPointList(PyObject* pyCoords, PyObject* pyPens, PyObject* pyBrushes) { return wxPyDrawXXXList(*self, wxPyDrawXXXPoint, pyCoords, pyPens, pyBrushes); } PyObject* _DrawLineList(PyObject* pyCoords, PyObject* pyPens, PyObject* pyBrushes) { return wxPyDrawXXXList(*self, wxPyDrawXXXLine, pyCoords, pyPens, pyBrushes); } PyObject* _DrawRectangleList(PyObject* pyCoords, PyObject* pyPens, PyObject* pyBrushes) { return wxPyDrawXXXList(*self, wxPyDrawXXXRectangle, pyCoords, pyPens, pyBrushes); } PyObject* _DrawEllipseList(PyObject* pyCoords, PyObject* pyPens, PyObject* pyBrushes) { return wxPyDrawXXXList(*self, wxPyDrawXXXEllipse, pyCoords, pyPens, pyBrushes); } PyObject* _DrawPolygonList(PyObject* pyCoords, PyObject* pyPens, PyObject* pyBrushes) { return wxPyDrawXXXList(*self, wxPyDrawXXXPolygon, pyCoords, pyPens, pyBrushes); } PyObject* _DrawTextList(PyObject* textList, PyObject* pyPoints, PyObject* foregroundList, PyObject* backgroundList) { return wxPyDrawTextList(*self, textList, pyPoints, foregroundList, backgroundList); } } %pythoncode { def DrawPointList(self, points, pens=None): """ Draw a list of points as quickly as possible. :param points: A sequence of 2-element sequences representing each point to draw, (x,y). :param pens: If None, then the current pen is used. If a single pen then it will be used for all points. If a list of pens then there should be one for each point in points. """ if pens is None: pens = [] elif isinstance(pens, wx.Pen): pens = [pens] elif len(pens) != len(points): raise ValueError('points and pens must have same length') return self._DrawPointList(points, pens, []) def DrawLineList(self, lines, pens=None): """ Draw a list of lines as quickly as possible. :param lines: A sequence of 4-element sequences representing each line to draw, (x1,y1, x2,y2). :param pens: If None, then the current pen is used. If a single pen then it will be used for all lines. If a list of pens then there should be one for each line in lines. """ if pens is None: pens = [] elif isinstance(pens, wx.Pen): pens = [pens] elif len(pens) != len(lines): raise ValueError('lines and pens must have same length') return self._DrawLineList(lines, pens, []) def DrawRectangleList(self, rectangles, pens=None, brushes=None): """ Draw a list of rectangles as quickly as possible. :param rectangles: A sequence of 4-element sequences representing each rectangle to draw, (x,y, w,h). :param pens: If None, then the current pen is used. If a single pen then it will be used for all rectangles. If a list of pens then there should be one for each rectangle in rectangles. :param brushes: A brush or brushes to be used to fill the rectagles, with similar semantics as the pens parameter. """ if pens is None: pens = [] elif isinstance(pens, wx.Pen): pens = [pens] elif len(pens) != len(rectangles): raise ValueError('rectangles and pens must have same length') if brushes is None: brushes = [] elif isinstance(brushes, wx.Brush): brushes = [brushes] elif len(brushes) != len(rectangles): raise ValueError('rectangles and brushes must have same length') return self._DrawRectangleList(rectangles, pens, brushes) def DrawEllipseList(self, ellipses, pens=None, brushes=None): """ Draw a list of ellipses as quickly as possible. :param ellipses: A sequence of 4-element sequences representing each ellipse to draw, (x,y, w,h). :param pens: If None, then the current pen is used. If a single pen then it will be used for all ellipses. If a list of pens then there should be one for each ellipse in ellipses. :param brushes: A brush or brushes to be used to fill the ellipses, with similar semantics as the pens parameter. """ if pens is None: pens = [] elif isinstance(pens, wx.Pen): pens = [pens] elif len(pens) != len(ellipses): raise ValueError('ellipses and pens must have same length') if brushes is None: brushes = [] elif isinstance(brushes, wx.Brush): brushes = [brushes] elif len(brushes) != len(ellipses): raise ValueError('ellipses and brushes must have same length') return self._DrawEllipseList(ellipses, pens, brushes) def DrawPolygonList(self, polygons, pens=None, brushes=None): """ Draw a list of polygons, each of which is a list of points. :param polygons: A sequence of sequences of sequences. [[(x1,y1),(x2,y2),(x3,y3)...], [(x1,y1),(x2,y2),(x3,y3)...]] :param pens: If None, then the current pen is used. If a single pen then it will be used for all polygons. If a list of pens then there should be one for each polygon. :param brushes: A brush or brushes to be used to fill the polygons, with similar semantics as the pens parameter. """ if pens is None: pens = [] elif isinstance(pens, wx.Pen): pens = [pens] elif len(pens) != len(polygons): raise ValueError('polygons and pens must have same length') if brushes is None: brushes = [] elif isinstance(brushes, wx.Brush): brushes = [brushes] elif len(brushes) != len(polygons): raise ValueError('polygons and brushes must have same length') return self._DrawPolygonList(polygons, pens, brushes) def DrawTextList(self, textList, coords, foregrounds = None, backgrounds = None): """ Draw a list of strings using a list of coordinants for positioning each string. :param textList: A list of strings :param coords: A list of (x,y) positions :param foregrounds: A list of `wx.Colour` objects to use for the foregrounds of the strings. :param backgrounds: A list of `wx.Colour` objects to use for the backgrounds of the strings. NOTE: Make sure you set Background mode to wx.Solid (DC.SetBackgroundMode) If you want backgrounds to do anything. """ if type(textList) == type(''): textList = [textList] elif len(textList) != len(coords): raise ValueError('textlist and coords must have same length') if foregrounds is None: foregrounds = [] elif isinstance(foregrounds, wx.Colour): foregrounds = [foregrounds] elif len(foregrounds) != len(coords): raise ValueError('foregrounds and coords must have same length') if backgrounds is None: backgrounds = [] elif isinstance(backgrounds, wx.Colour): backgrounds = [backgrounds] elif len(backgrounds) != len(coords): raise ValueError('backgrounds and coords must have same length') return self._DrawTextList(textList, coords, foregrounds, backgrounds) } %property(Background, GetBackground, SetBackground, doc="See `GetBackground` and `SetBackground`"); %property(BackgroundMode, GetBackgroundMode, SetBackgroundMode, doc="See `GetBackgroundMode` and `SetBackgroundMode`"); %property(BoundingBox, GetBoundingBox, doc="See `GetBoundingBox`"); %property(Brush, GetBrush, SetBrush, doc="See `GetBrush` and `SetBrush`"); %property(CharHeight, GetCharHeight, doc="See `GetCharHeight`"); %property(CharWidth, GetCharWidth, doc="See `GetCharWidth`"); %property(ClippingBox, GetClippingBox, doc="See `GetClippingBox`"); %property(ClippingRect, GetClippingRect, SetClippingRect, doc="See `GetClippingRect` and `SetClippingRect`"); %property(Depth, GetDepth, doc="See `GetDepth`"); %property(DeviceOrigin, GetDeviceOrigin, SetDeviceOrigin, doc="See `GetDeviceOrigin` and `SetDeviceOrigin`"); %property(Font, GetFont, SetFont, doc="See `GetFont` and `SetFont`"); %property(FullTextExtent, GetFullTextExtent, doc="See `GetFullTextExtent`"); %property(LogicalFunction, GetLogicalFunction, SetLogicalFunction, doc="See `GetLogicalFunction` and `SetLogicalFunction`"); %property(LogicalOrigin, GetLogicalOrigin, SetLogicalOrigin, doc="See `GetLogicalOrigin` and `SetLogicalOrigin`"); %property(LogicalScale, GetLogicalScale, SetLogicalScale, doc="See `GetLogicalScale` and `SetLogicalScale`"); %property(MapMode, GetMapMode, SetMapMode, doc="See `GetMapMode` and `SetMapMode`"); %property(MultiLineTextExtent, GetMultiLineTextExtent, doc="See `GetMultiLineTextExtent`"); %property(Optimization, GetOptimization, SetOptimization, doc="See `GetOptimization` and `SetOptimization`"); %property(PPI, GetPPI, doc="See `GetPPI`"); %property(PartialTextExtents, GetPartialTextExtents, doc="See `GetPartialTextExtents`"); %property(Pen, GetPen, SetPen, doc="See `GetPen` and `SetPen`"); %property(Pixel, GetPixel, doc="See `GetPixel`"); %property(PixelPoint, GetPixelPoint, doc="See `GetPixelPoint`"); %property(Size, GetSize, doc="See `GetSize`"); %property(SizeMM, GetSizeMM, doc="See `GetSizeMM`"); %property(TextBackground, GetTextBackground, SetTextBackground, doc="See `GetTextBackground` and `SetTextBackground`"); %property(TextExtent, GetTextExtent, doc="See `GetTextExtent`"); %property(TextForeground, GetTextForeground, SetTextForeground, doc="See `GetTextForeground` and `SetTextForeground`"); %property(UserScale, GetUserScale, SetUserScale, doc="See `GetUserScale` and `SetUserScale`"); %property(LayoutDirection, GetLayoutDirection, SetLayoutDirection); }; %{ static void wxDC_GetBoundingBox(wxDC* dc, int* x1, int* y1, int* x2, int* y2) { *x1 = dc->MinX(); *y1 = dc->MinY(); *x2 = dc->MaxX(); *y2 = dc->MaxY(); } %} //--------------------------------------------------------------------------- %newgroup DocStr(wxDCTextColourChanger, "wx.DCTextColourChanger can be used to temporarily change the DC text colour and restore it automatically when the object goes out of scope", ""); class wxDCTextColourChanger { public: wxDCTextColourChanger(wxDC& dc, const wxColour& col); ~wxDCTextColourChanger(); }; DocStr(wxDCPenChanger, "wx.DCPenChanger can be used to temporarily change the DC pen and restore it automatically when the object goes out of scope", ""); class wxDCPenChanger { public: wxDCPenChanger(wxDC& dc, const wxPen& pen); ~wxDCPenChanger(); }; DocStr(wxDCBrushChanger, "wx.DCBrushChanger can be used to temporarily change the DC brush and restore it automatically when the object goes out of scope", ""); class wxDCBrushChanger { public: wxDCBrushChanger(wxDC& dc, const wxBrush& brush); ~wxDCBrushChanger(); }; DocStr(wxDCClipper, "wx.wxDCClipper sets the DC's clipping region when it is constructed, and then automatically destroys the clipping region when the clipper goes out of scope.", ""); class wxDCClipper { public: %nokwargs wxDCClipper; wxDCClipper(wxDC& dc, const wxRegion& r); wxDCClipper(wxDC& dc, const wxRect& r); wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h); ~wxDCClipper(); }; //--------------------------------------------------------------------------- %newgroup MustHaveApp(wxScreenDC); DocStr(wxScreenDC, "A wxScreenDC can be used to paint anywhere on the screen. This should normally be constructed as a temporary stack object; don't store a wxScreenDC object. ", ""); class wxScreenDC : public wxDC { public: wxScreenDC(); DocDeclStrName( bool , StartDrawingOnTop(wxWindow* window), "Specify that the area of the screen to be drawn upon coincides with the given window. :see: `EndDrawingOnTop`", "", StartDrawingOnTopWin); DocDeclStr( bool , StartDrawingOnTop(wxRect* rect = NULL), "Specify that the area is the given rectangle, or the whole screen if ``None`` is passed. :see: `EndDrawingOnTop`", ""); DocDeclStr( bool , EndDrawingOnTop(), "Use this in conjunction with `StartDrawingOnTop` or `StartDrawingOnTopWin` to ensure that drawing to the screen occurs on top of existing windows. Without this, some window systems (such as X) only allow drawing to take place underneath other windows. You might use this pair of functions when implementing a drag feature, for example as in the `wx.SplitterWindow` implementation. These functions are probably obsolete since the X implementations allow drawing directly on the screen now. However, the fact that this function allows the screen to be refreshed afterwards may be useful to some applications.", ""); }; //--------------------------------------------------------------------------- %newgroup MustHaveApp(wxWindowDC); DocStr(wxWindowDC, "A wx.WindowDC must be constructed if an application wishes to paint on the whole area of a window (client and decorations). This should normally be constructed as a temporary stack object; don't store a wx.WindowDC object.",""); class wxWindowDC : public wxDC { public: DocCtorStr( wxWindowDC(wxWindow* win), "Constructor. Pass the window on which you wish to paint.",""); }; //--------------------------------------------------------------------------- %newgroup MustHaveApp(wxClientDC); DocStr(wxClientDC, "A wx.ClientDC must be constructed if an application wishes to paint on the client area of a window from outside an EVT_PAINT event. This should normally be constructed as a temporary stack object; don't store a wx.ClientDC object long term. To draw on a window from within an EVT_PAINT handler, construct a `wx.PaintDC` object. To draw on the whole window including decorations, construct a `wx.WindowDC` object (Windows only). ", ""); class wxClientDC : public wxWindowDC { public: DocCtorStr( wxClientDC(wxWindow* win), "Constructor. Pass the window on which you wish to paint.", ""); }; //--------------------------------------------------------------------------- %newgroup MustHaveApp(wxPaintDC); DocStr(wxPaintDC, "A wx.PaintDC must be constructed if an application wishes to paint on the client area of a window from within an EVT_PAINT event handler. This should normally be constructed as a temporary stack object; don't store a wx.PaintDC object. If you have an EVT_PAINT handler, you **must** create a wx.PaintDC object within it even if you don't actually use it. Using wx.PaintDC within EVT_PAINT handlers is important because it automatically sets the clipping area to the damaged area of the window. Attempts to draw outside this area do not appear. To draw on a window from outside EVT_PAINT handlers, construct a `wx.ClientDC` object. ",""); class wxPaintDC : public wxClientDC { public: DocCtorStr( wxPaintDC(wxWindow* win), "Constructor. Pass the window on which you wish to paint.", ""); }; //--------------------------------------------------------------------------- %newgroup MustHaveApp(wxMemoryDC); DocStr(wxMemoryDC, "A memory device context provides a means to draw graphics onto a bitmap. A bitmap must be selected into the new memory DC before it may be used for anything. Typical usage is as follows:: dc = wx.MemoryDC() dc.SelectObject(bitmap) # draw on the dc using any of the Draw methods dc.SelectObject(wx.NullBitmap) # the bitmap now contains wahtever was drawn upon it Note that the memory DC *must* be deleted (or the bitmap selected out of it) before a bitmap can be reselected into another memory DC. ", ""); class wxMemoryDC : public wxWindowDC { public: DocCtorStr( wxMemoryDC(wxBitmap& bitmap = wxNullBitmap), "Constructs a new memory device context. Use the Ok member to test whether the constructor was successful in creating a usable device context. If a bitmap is not given to this constructor then don't forget to select a bitmap into the DC before drawing on it.", " :see: `MemoryDCFromDC`"); DocCtorStrName( wxMemoryDC(wxDC* oldDC), "Creates a DC that is compatible with the oldDC.", "", MemoryDCFromDC); DocDeclStr( void , SelectObject(wxBitmap& bitmap), "Selects the bitmap into the device context, to use as the memory bitmap. Selecting the bitmap into a memory DC allows you to draw into the DC, and therefore the bitmap, and also to use Blit to copy the bitmap to a window. If the argument is wx.NullBitmap (or some other uninitialised `wx.Bitmap`) the current bitmap is selected out of the device context, and the original bitmap restored, allowing the current bitmap to be destroyed safely.", ""); DocDeclStr( void , SelectObjectAsSource(const wxBitmap& bmp), "", ""); }; //--------------------------------------------------------------------------- %newgroup %{ #include %} enum { wxBUFFER_VIRTUAL_AREA, wxBUFFER_CLIENT_AREA, wxBUFFER_USES_SHARED_BUFFER }; MustHaveApp(wxBufferedDC); DocStr(wxBufferedDC, "This simple class provides a simple way to avoid flicker: when drawing on it, everything is in fact first drawn on an in-memory buffer (a `wx.Bitmap`) and then copied to the screen only once, when this object is destroyed. You can either provide a buffer bitmap yourself, and reuse it the next time something needs painted, or you can let the buffered DC create and provide a buffer bitmap itself. Buffered DCs can be used in the same way as any other device context. wx.BufferedDC itself typically replaces `wx.ClientDC`, if you want to use it in your EVT_PAINT handler, you should look at `wx.BufferedPaintDC`. You can also use a wx.BufferedDC without providing a target DC. In this case the operations done on the dc will only be written to the buffer bitmap and *not* to any window, so you will want to have provided the buffer bitmap and then reuse it when it needs painted to the window. Please note that GTK+ 2.0 and OS X provide double buffering themselves natively. You may want to use `wx.Window.IsDoubleBuffered` to determine whether you need to use buffering or not, or use `wx.AutoBufferedPaintDC` to avoid needless double buffering on systems that already do it automatically. ", ""); class wxBufferedDC : public wxMemoryDC { public: DocStr( wxBufferedDC, "Constructs a buffered DC.", " :param dc: The underlying DC: everything drawn to this object will be flushed to this DC when this object is destroyed. You may pass ``None`` in order to just initialize the buffer, and not flush it. :param buffer: If a `wx.Size` object is passed as the 2nd arg then it is the size of the bitmap that will be created internally and used for an implicit buffer. If the 2nd arg is a `wx.Bitmap` then it is the explicit buffer that will be used. Using an explicit buffer is the most efficient solution as the bitmap doesn't have to be recreated each time but it also requires more memory as the bitmap is never freed. The bitmap should have appropriate size, anything drawn outside of its bounds is clipped. If wx.NullBitmap is used then a new buffer will be allocated that is the same size as the dc. :param style: The style parameter indicates whether the supplied buffer is intended to cover the entire virtual size of a `wx.ScrolledWindow` or if it only covers the client area. Acceptable values are ``wx.BUFFER_VIRTUAL_AREA`` and ``wx.BUFFER_CLIENT_AREA``. "); %nokwargs wxBufferedDC; %pythonAppend wxBufferedDC "# save a ref so the other dc will not be deleted before self self.__dc = args[0] # also save a ref to the bitmap if len(args) > 1: self.__bmp = args[1] "; wxBufferedDC( wxDC* dc, wxBitmap& buffer=wxNullBitmap, int style = wxBUFFER_CLIENT_AREA ); wxBufferedDC( wxDC* dc, const wxSize& area, int style = wxBUFFER_CLIENT_AREA ); // wxBufferedDC(wxWindow* win, // wxDC *dc, // const wxSize &area, // int style = wxBUFFER_CLIENT_AREA); DocCtorStr( ~wxBufferedDC(), "Copies everything drawn on the DC so far to the underlying DC associated with this object, if any.", ""); DocDeclStr( void , UnMask(), "Blits the buffer to the dc, and detaches the dc from the buffer (so it can be effectively used once only). This is usually only called in the destructor.", ""); // Set and get the style void SetStyle(int style); int GetStyle() const; }; MustHaveApp(wxBufferedPaintDC); DocStr(wxBufferedPaintDC, "This is a subclass of `wx.BufferedDC` which can be used inside of an EVT_PAINT event handler. Just create an object of this class instead of `wx.PaintDC` and that's all you have to do to (mostly) avoid flicker. The only thing to watch out for is that if you are using this class together with `wx.ScrolledWindow`, you probably do **not** want to call `wx.Window.PrepareDC` on it as it already does this internally for the real underlying `wx.PaintDC`. If your window is already fully buffered in a `wx.Bitmap` then your EVT_PAINT handler can be as simple as just creating a ``wx.BufferedPaintDC`` as it will `Blit` the buffer to the window automatically when it is destroyed. For example:: def OnPaint(self, event): dc = wx.BufferedPaintDC(self, self.buffer) ", ""); class wxBufferedPaintDC : public wxBufferedDC { public: %pythonAppend wxBufferedPaintDC "if len(args) > 1: self.__bmp = args[1]"; DocCtorStr( wxBufferedPaintDC( wxWindow *window, wxBitmap &buffer = wxNullBitmap, int style = wxBUFFER_CLIENT_AREA), "Create a buffered paint DC. As with `wx.BufferedDC`, you may either provide the bitmap to be used for buffering or let this object create one internally (in the latter case, the size of the client part of the window is automatically used).", ""); }; //--------------------------------------------------------------------------- %newgroup // Epydoc doesn't like this for some strange reason... // %pythoncode { // if 'wxMac' in wx.PlatformInfo or 'gtk2' in wx.PlatformInfo: // _AutoBufferedPaintDCBase = PaintDC // else: // _AutoBufferedPaintDCBase = BufferedPaintDC // class AutoBufferedPaintDC(_AutoBufferedPaintDCBase): // """ // If the current platform double buffers by default then this DC is the // same as a plain `wx.PaintDC`, otherwise it is a `wx.BufferedPaintDC`. // :see: `wx.AutoBufferedPaintDCFactory` // """ // def __init__(self, window): // _AutoBufferedPaintDCBase.__init__(self, window) // } DocStr(wxAutoBufferedPaintDC, "If the current platform double buffers by default then this DC is the same as a plain `wx.PaintDC`, otherwise it is a `wx.BufferedPaintDC`. :see: `wx.AutoBufferedPaintDCFactory` ", ""); class wxAutoBufferedPaintDC: public wxDC { public: wxAutoBufferedPaintDC(wxWindow* win); }; %newobject wxAutoBufferedPaintDCFactory; DocDeclStr( wxDC* , wxAutoBufferedPaintDCFactory(wxWindow* window), "Checks if the window is natively double buffered and will return a `wx.PaintDC` if it is, a `wx.BufferedPaintDC` otherwise. The advantage of this function over `wx.AutoBufferedPaintDC` is that this function will check if the the specified window has double-buffering enabled rather than just going by platform defaults.", ""); //--------------------------------------------------------------------------- %newgroup MustHaveApp(wxMirrorDC); DocStr(wxMirrorDC, "wx.MirrorDC is a simple wrapper class which is always associated with a real `wx.DC` object and either forwards all of its operations to it without changes (no mirroring takes place) or exchanges x and y coordinates which makes it possible to reuse the same code to draw a figure and its mirror -- i.e. reflection related to the diagonal line x == y.", ""); class wxMirrorDC : public wxDC { public: DocCtorStr( wxMirrorDC(wxDC& dc, bool mirror), "Creates a mirrored DC associated with the real *dc*. Everything drawn on the wx.MirrorDC will appear on the *dc*, and will be mirrored if *mirror* is True.",""); }; //--------------------------------------------------------------------------- %newgroup %{ #include %} MustHaveApp(wxPostScriptDC); DocStr(wxPostScriptDC, "This is a `wx.DC` that can write to PostScript files on any platform.",""); class wxPostScriptDC : public wxDC { public: DocCtorStr( wxPostScriptDC(const wxPrintData& printData), "Constructs a PostScript printer device context from a `wx.PrintData` object.", ""); wxPrintData& GetPrintData(); void SetPrintData(const wxPrintData& data); DocDeclStr( static void , SetResolution(int ppi), "Set resolution (in pixels per inch) that will be used in PostScript output. Default is 720ppi.", ""); DocDeclStr( static int , GetResolution(), "Return resolution used in PostScript output.", ""); %property(PrintData, GetPrintData, SetPrintData, doc="See `GetPrintData` and `SetPrintData`"); }; //--------------------------------------------------------------------------- %newgroup MustHaveApp(wxMetaFile); MustHaveApp(wxMetaFileDC); #if defined(__WXMSW__) || defined(__WXMAC__) %{ #include %} class wxMetaFile : public wxObject { public: wxMetaFile(const wxString& filename = wxPyEmptyString); ~wxMetaFile(); bool IsOk(); %pythoncode { Ok = IsOk } bool SetClipboard(int width = 0, int height = 0); wxSize GetSize(); int GetWidth(); int GetHeight(); #ifdef __WXMSW__ const wxString& GetFileName() const; #endif %pythoncode { def __nonzero__(self): return self.IsOk() } }; // bool wxMakeMetaFilePlaceable(const wxString& filename, // int minX, int minY, int maxX, int maxY, float scale=1.0); class wxMetaFileDC : public wxDC { public: wxMetaFileDC(const wxString& filename = wxPyEmptyString, int width = 0, int height = 0, const wxString& description = wxPyEmptyString); wxMetaFile* Close(); }; #else // Make some dummies for the other platforms %{ class wxMetaFile : public wxObject { public: wxMetaFile(const wxString&) { wxPyRaiseNotImplemented(); } }; class wxMetaFileDC : public wxClientDC { public: wxMetaFileDC(const wxString&, int, int, const wxString&) { wxPyRaiseNotImplemented(); } }; %} class wxMetaFile : public wxObject { public: wxMetaFile(const wxString& filename = wxPyEmptyString); }; class wxMetaFileDC : public wxDC { public: wxMetaFileDC(const wxString& filename = wxPyEmptyString, int width = 0, int height = 0, const wxString& description = wxPyEmptyString); }; #endif //--------------------------------------------------------------------------- MustHaveApp(wxPrinterDC); #if defined(__WXMSW__) || defined(__WXMAC__) class wxPrinterDC : public wxDC { public: wxPrinterDC(const wxPrintData& printData); }; #else %{ class wxPrinterDC : public wxClientDC { public: wxPrinterDC(const wxPrintData&) { wxPyRaiseNotImplemented(); } }; %} class wxPrinterDC : public wxDC { public: wxPrinterDC(const wxPrintData& printData); }; #endif //--------------------------------------------------------------------------- //---------------------------------------------------------------------------