X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/fd2dc343560f42ca95782aae71faa891a26f80ea..1fbf26be167a9188c45322ed9ece04af54708d2a:/wxPython/src/gtk/_gdi.py diff --git a/wxPython/src/gtk/_gdi.py b/wxPython/src/gtk/_gdi.py index 5b1935c747..5594b776a1 100644 --- a/wxPython/src/gtk/_gdi.py +++ b/wxPython/src/gtk/_gdi.py @@ -2329,6 +2329,21 @@ if wx.Platform == "__WXMSW__": #--------------------------------------------------------------------------- class DC(_core.Object): + """ + 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. + """ def __init__(self): raise RuntimeError, "No constructor defined" def __repr__(self): return "<%s.%s; proxy of C++ wxDC instance at %s>" % (self.__class__.__module__, self.__class__.__name__, self.this,) @@ -2339,23 +2354,75 @@ class DC(_core.Object): except: pass def BeginDrawing(*args, **kwargs): - """BeginDrawing(self)""" + """ + BeginDrawing(self) + + Allows for optimization of drawing code on platforms that need it. On + other platforms this is just an empty function and is harmless. To + take advantage of this postential optimization simply enclose each + group of calls to the drawing primitives within calls to + `BeginDrawing` and `EndDrawing`. + """ return _gdi_.DC_BeginDrawing(*args, **kwargs) def EndDrawing(*args, **kwargs): - """EndDrawing(self)""" + """ + EndDrawing(self) + + Ends the group of drawing primitives started with `BeginDrawing`, and + invokes whatever optimization is available for this DC type on the + current platform. + """ return _gdi_.DC_EndDrawing(*args, **kwargs) def FloodFill(*args, **kwargs): - """FloodFill(self, int x, int y, Colour col, int style=FLOOD_SURFACE) -> bool""" + """ + FloodFill(self, int x, int y, Colour col, int style=FLOOD_SURFACE) -> bool + + 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. + """ return _gdi_.DC_FloodFill(*args, **kwargs) def FloodFillPoint(*args, **kwargs): - """FloodFillPoint(self, Point pt, Colour col, int style=FLOOD_SURFACE) -> bool""" + """ + FloodFillPoint(self, Point pt, Colour col, int style=FLOOD_SURFACE) -> bool + + 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. + """ return _gdi_.DC_FloodFillPoint(*args, **kwargs) def GetPixel(*args, **kwargs): - """GetPixel(self, int x, int y) -> Colour""" + """ + GetPixel(self, int x, int y) -> Colour + + Gets the colour at the specified location on the DC. + """ return _gdi_.DC_GetPixel(*args, **kwargs) def GetPixelPoint(*args, **kwargs): @@ -2363,127 +2430,368 @@ class DC(_core.Object): return _gdi_.DC_GetPixelPoint(*args, **kwargs) def DrawLine(*args, **kwargs): - """DrawLine(self, int x1, int y1, int x2, int y2)""" + """ + DrawLine(self, int x1, int y1, int x2, int y2) + + 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). + """ return _gdi_.DC_DrawLine(*args, **kwargs) def DrawLinePoint(*args, **kwargs): - """DrawLinePoint(self, Point pt1, Point pt2)""" + """ + DrawLinePoint(self, Point pt1, Point pt2) + + 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). + """ return _gdi_.DC_DrawLinePoint(*args, **kwargs) def CrossHair(*args, **kwargs): - """CrossHair(self, int x, int y)""" + """ + CrossHair(self, int x, int y) + + 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. + """ return _gdi_.DC_CrossHair(*args, **kwargs) def CrossHairPoint(*args, **kwargs): - """CrossHairPoint(self, Point pt)""" + """ + CrossHairPoint(self, Point pt) + + 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. + """ return _gdi_.DC_CrossHairPoint(*args, **kwargs) def DrawArc(*args, **kwargs): - """DrawArc(self, int x1, int y1, int x2, int y2, int xc, int yc)""" + """ + DrawArc(self, int x1, int y1, int x2, int y2, int xc, int yc) + + 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. + """ return _gdi_.DC_DrawArc(*args, **kwargs) def DrawArcPoint(*args, **kwargs): - """DrawArcPoint(self, Point pt1, Point pt2, Point centre)""" + """ + DrawArcPoint(self, Point pt1, Point pt2, Point center) + + 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. + """ return _gdi_.DC_DrawArcPoint(*args, **kwargs) def DrawCheckMark(*args, **kwargs): - """DrawCheckMark(self, int x, int y, int width, int height)""" + """ + DrawCheckMark(self, int x, int y, int width, int height) + + Draws a check mark inside the given rectangle. + """ return _gdi_.DC_DrawCheckMark(*args, **kwargs) def DrawCheckMarkRect(*args, **kwargs): - """DrawCheckMarkRect(self, Rect rect)""" + """ + DrawCheckMarkRect(self, Rect rect) + + Draws a check mark inside the given rectangle. + """ return _gdi_.DC_DrawCheckMarkRect(*args, **kwargs) def DrawEllipticArc(*args, **kwargs): - """DrawEllipticArc(self, int x, int y, int w, int h, double sa, double ea)""" + """ + DrawEllipticArc(self, int x, int y, int w, int h, double start, double end) + + 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. + """ return _gdi_.DC_DrawEllipticArc(*args, **kwargs) def DrawEllipticArcPointSize(*args, **kwargs): - """DrawEllipticArcPointSize(self, Point pt, Size sz, double sa, double ea)""" + """ + DrawEllipticArcPointSize(self, Point pt, Size sz, double start, double end) + + 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. + """ return _gdi_.DC_DrawEllipticArcPointSize(*args, **kwargs) def DrawPoint(*args, **kwargs): - """DrawPoint(self, int x, int y)""" + """ + DrawPoint(self, int x, int y) + + Draws a point using the current pen. + """ return _gdi_.DC_DrawPoint(*args, **kwargs) def DrawPointPoint(*args, **kwargs): - """DrawPointPoint(self, Point pt)""" + """ + DrawPointPoint(self, Point pt) + + Draws a point using the current pen. + """ return _gdi_.DC_DrawPointPoint(*args, **kwargs) def DrawRectangle(*args, **kwargs): - """DrawRectangle(self, int x, int y, int width, int height)""" + """ + DrawRectangle(self, int x, int y, int width, int height) + + 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. + """ return _gdi_.DC_DrawRectangle(*args, **kwargs) def DrawRectangleRect(*args, **kwargs): - """DrawRectangleRect(self, Rect rect)""" + """ + DrawRectangleRect(self, Rect rect) + + 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. + """ return _gdi_.DC_DrawRectangleRect(*args, **kwargs) def DrawRectanglePointSize(*args, **kwargs): - """DrawRectanglePointSize(self, Point pt, Size sz)""" + """ + DrawRectanglePointSize(self, Point pt, Size sz) + + 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. + """ return _gdi_.DC_DrawRectanglePointSize(*args, **kwargs) def DrawRoundedRectangle(*args, **kwargs): - """DrawRoundedRectangle(self, int x, int y, int width, int height, double radius)""" + """ + DrawRoundedRectangle(self, int x, int y, int width, int height, double radius) + + 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. + """ return _gdi_.DC_DrawRoundedRectangle(*args, **kwargs) def DrawRoundedRectangleRect(*args, **kwargs): - """DrawRoundedRectangleRect(self, Rect r, double radius)""" + """ + DrawRoundedRectangleRect(self, Rect r, double radius) + + 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. + """ return _gdi_.DC_DrawRoundedRectangleRect(*args, **kwargs) def DrawRoundedRectanglePointSize(*args, **kwargs): - """DrawRoundedRectanglePointSize(self, Point pt, Size sz, double radius)""" + """ + DrawRoundedRectanglePointSize(self, Point pt, Size sz, double radius) + + 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. + """ return _gdi_.DC_DrawRoundedRectanglePointSize(*args, **kwargs) def DrawCircle(*args, **kwargs): - """DrawCircle(self, int x, int y, int radius)""" + """ + DrawCircle(self, int x, int y, int radius) + + 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. + """ return _gdi_.DC_DrawCircle(*args, **kwargs) def DrawCirclePoint(*args, **kwargs): - """DrawCirclePoint(self, Point pt, int radius)""" + """ + DrawCirclePoint(self, Point pt, int radius) + + 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. + """ return _gdi_.DC_DrawCirclePoint(*args, **kwargs) def DrawEllipse(*args, **kwargs): - """DrawEllipse(self, int x, int y, int width, int height)""" + """ + DrawEllipse(self, int x, int y, int width, int height) + + Draws an ellipse contained in the specified rectangle. The current pen + is used for the outline and the current brush for filling the shape. + """ return _gdi_.DC_DrawEllipse(*args, **kwargs) def DrawEllipseRect(*args, **kwargs): - """DrawEllipseRect(self, Rect rect)""" + """ + DrawEllipseRect(self, Rect rect) + + Draws an ellipse contained in the specified rectangle. The current pen + is used for the outline and the current brush for filling the shape. + """ return _gdi_.DC_DrawEllipseRect(*args, **kwargs) def DrawEllipsePointSize(*args, **kwargs): - """DrawEllipsePointSize(self, Point pt, Size sz)""" + """ + DrawEllipsePointSize(self, Point pt, Size sz) + + Draws an ellipse contained in the specified rectangle. The current pen + is used for the outline and the current brush for filling the shape. + """ return _gdi_.DC_DrawEllipsePointSize(*args, **kwargs) def DrawIcon(*args, **kwargs): - """DrawIcon(self, Icon icon, int x, int y)""" + """ + DrawIcon(self, Icon icon, int x, int y) + + 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. + """ return _gdi_.DC_DrawIcon(*args, **kwargs) def DrawIconPoint(*args, **kwargs): - """DrawIconPoint(self, Icon icon, Point pt)""" + """ + DrawIconPoint(self, Icon icon, Point pt) + + 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. + """ return _gdi_.DC_DrawIconPoint(*args, **kwargs) def DrawBitmap(*args, **kwargs): - """DrawBitmap(self, Bitmap bmp, int x, int y, bool useMask=False)""" + """ + DrawBitmap(self, Bitmap bmp, int x, int y, bool useMask=False) + + 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. + """ return _gdi_.DC_DrawBitmap(*args, **kwargs) def DrawBitmapPoint(*args, **kwargs): - """DrawBitmapPoint(self, Bitmap bmp, Point pt, bool useMask=False)""" + """ + DrawBitmapPoint(self, Bitmap bmp, Point pt, bool useMask=False) + + 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. + """ return _gdi_.DC_DrawBitmapPoint(*args, **kwargs) def DrawText(*args, **kwargs): - """DrawText(self, String text, int x, int y)""" + """ + DrawText(self, String text, int x, int y) + + 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. + """ return _gdi_.DC_DrawText(*args, **kwargs) def DrawTextPoint(*args, **kwargs): - """DrawTextPoint(self, String text, Point pt)""" + """ + DrawTextPoint(self, String text, Point pt) + + 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. + """ return _gdi_.DC_DrawTextPoint(*args, **kwargs) def DrawRotatedText(*args, **kwargs): - """DrawRotatedText(self, String text, int x, int y, double angle)""" + """ + DrawRotatedText(self, String text, int x, int y, double angle) + + 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. + """ return _gdi_.DC_DrawRotatedText(*args, **kwargs) def DrawRotatedTextPoint(*args, **kwargs): - """DrawRotatedTextPoint(self, String text, Point pt, double angle)""" + """ + DrawRotatedTextPoint(self, String text, Point pt, double angle) + + 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. + """ return _gdi_.DC_DrawRotatedTextPoint(*args, **kwargs) def Blit(*args, **kwargs): @@ -2491,6 +2799,11 @@ class DC(_core.Object): Blit(self, int xdest, int ydest, int width, int height, DC source, int xsrc, int ysrc, int rop=COPY, bool useMask=False, int xsrcMask=-1, int ysrcMask=-1) -> bool + + 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. """ return _gdi_.DC_Blit(*args, **kwargs) @@ -2498,33 +2811,105 @@ class DC(_core.Object): """ BlitPointSize(self, Point destPt, Size sz, DC source, Point srcPt, int rop=COPY, bool useMask=False, Point srcPtMask=DefaultPosition) -> bool + + 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. """ return _gdi_.DC_BlitPointSize(*args, **kwargs) def SetClippingRegion(*args, **kwargs): - """SetClippingRegion(self, int x, int y, int width, int height)""" + """ + SetClippingRegion(self, int x, int y, int width, int height) + + 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. + """ return _gdi_.DC_SetClippingRegion(*args, **kwargs) def SetClippingRegionPointSize(*args, **kwargs): - """SetClippingRegionPointSize(self, Point pt, Size sz)""" + """ + SetClippingRegionPointSize(self, Point pt, Size sz) + + 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. + """ return _gdi_.DC_SetClippingRegionPointSize(*args, **kwargs) def SetClippingRegionAsRegion(*args, **kwargs): - """SetClippingRegionAsRegion(self, Region region)""" + """ + SetClippingRegionAsRegion(self, Region region) + + 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. + """ return _gdi_.DC_SetClippingRegionAsRegion(*args, **kwargs) def SetClippingRect(*args, **kwargs): - """SetClippingRect(self, Rect rect)""" + """ + SetClippingRect(self, Rect rect) + + 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. + """ return _gdi_.DC_SetClippingRect(*args, **kwargs) def DrawLines(*args, **kwargs): - """DrawLines(self, int points, Point points_array, int xoffset=0, int 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. + """ return _gdi_.DC_DrawLines(*args, **kwargs) def DrawPolygon(*args, **kwargs): """ - DrawPolygon(self, int points, Point points_array, int xoffset=0, int yoffset=0, + 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. """ return _gdi_.DC_DrawPolygon(*args, **kwargs) @@ -2532,6 +2917,10 @@ class DC(_core.Object): """ DrawLabel(self, String text, Rect 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. """ return _gdi_.DC_DrawLabel(*args, **kwargs) @@ -2539,75 +2928,165 @@ class DC(_core.Object): """ DrawImageLabel(self, String text, Bitmap image, Rect rect, int alignment=wxALIGN_LEFT|wxALIGN_TOP, int indexAccel=-1) -> Rect + + 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. """ return _gdi_.DC_DrawImageLabel(*args, **kwargs) def DrawSpline(*args, **kwargs): - """DrawSpline(self, int points, Point 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'. + """ return _gdi_.DC_DrawSpline(*args, **kwargs) def Clear(*args, **kwargs): - """Clear(self)""" + """ + Clear(self) + + Clears the device context using the current background brush. + """ return _gdi_.DC_Clear(*args, **kwargs) def StartDoc(*args, **kwargs): - """StartDoc(self, String message) -> bool""" + """ + StartDoc(self, String message) -> bool + + Starts a document (only relevant when outputting to a + printer). *Message* is a message to show whilst printing. + """ return _gdi_.DC_StartDoc(*args, **kwargs) def EndDoc(*args, **kwargs): - """EndDoc(self)""" + """ + EndDoc(self) + + Ends a document (only relevant when outputting to a printer). + """ return _gdi_.DC_EndDoc(*args, **kwargs) def StartPage(*args, **kwargs): - """StartPage(self)""" + """ + StartPage(self) + + Starts a document page (only relevant when outputting to a printer). + """ return _gdi_.DC_StartPage(*args, **kwargs) def EndPage(*args, **kwargs): - """EndPage(self)""" + """ + EndPage(self) + + Ends a document page (only relevant when outputting to a printer). + """ return _gdi_.DC_EndPage(*args, **kwargs) def SetFont(*args, **kwargs): - """SetFont(self, Font font)""" + """ + SetFont(self, Font 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. + """ return _gdi_.DC_SetFont(*args, **kwargs) def SetPen(*args, **kwargs): - """SetPen(self, Pen pen)""" + """ + SetPen(self, Pen 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. + """ return _gdi_.DC_SetPen(*args, **kwargs) def SetBrush(*args, **kwargs): - """SetBrush(self, Brush brush)""" + """ + SetBrush(self, Brush 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. + """ return _gdi_.DC_SetBrush(*args, **kwargs) def SetBackground(*args, **kwargs): - """SetBackground(self, Brush brush)""" + """ + SetBackground(self, Brush brush) + + Sets the current background brush for the DC. + """ return _gdi_.DC_SetBackground(*args, **kwargs) def SetBackgroundMode(*args, **kwargs): - """SetBackgroundMode(self, int mode)""" + """ + SetBackgroundMode(self, 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. + """ return _gdi_.DC_SetBackgroundMode(*args, **kwargs) def SetPalette(*args, **kwargs): - """SetPalette(self, Palette palette)""" + """ + SetPalette(self, Palette 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. + """ return _gdi_.DC_SetPalette(*args, **kwargs) def DestroyClippingRegion(*args, **kwargs): - """DestroyClippingRegion(self)""" + """ + DestroyClippingRegion(self) + + Destroys the current clipping region so that none of the DC is + clipped. + """ return _gdi_.DC_DestroyClippingRegion(*args, **kwargs) def GetClippingBox(*args, **kwargs): - """GetClippingBox() -> (x, y, width, height)""" + """ + GetClippingBox() -> (x, y, width, height) + + Gets the rectangle surrounding the current clipping region. + """ return _gdi_.DC_GetClippingBox(*args, **kwargs) def GetClippingRect(*args, **kwargs): - """GetClippingRect(self) -> Rect""" + """ + GetClippingRect(self) -> Rect + + Gets the rectangle surrounding the current clipping region. + """ return _gdi_.DC_GetClippingRect(*args, **kwargs) def GetCharHeight(*args, **kwargs): - """GetCharHeight(self) -> int""" + """ + GetCharHeight(self) -> int + + Gets the character height of the currently set font. + """ return _gdi_.DC_GetCharHeight(*args, **kwargs) def GetCharWidth(*args, **kwargs): - """GetCharWidth(self) -> int""" + """ + GetCharWidth(self) -> int + + Gets the average character width of the currently set font. + """ return _gdi_.DC_GetCharWidth(*args, **kwargs) def GetTextExtent(*args, **kwargs): @@ -2641,14 +3120,33 @@ class DC(_core.Object): return _gdi_.DC_GetMultiLineTextExtent(*args, **kwargs) def GetPartialTextExtents(*args, **kwargs): - """GetPartialTextExtents(self, String text) -> wxArrayInt""" + """ + 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 implementaiton then it will be used instead. + """ return _gdi_.DC_GetPartialTextExtents(*args, **kwargs) def GetSize(*args, **kwargs): """ GetSize(self) -> Size - Get the DC size in device units. + 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)) + """ return _gdi_.DC_GetSize(*args, **kwargs) @@ -2656,7 +3154,17 @@ class DC(_core.Object): """ GetSizeTuple() -> (width, height) - Get the DC size in device units. + 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)) + """ return _gdi_.DC_GetSizeTuple(*args, **kwargs) @@ -2677,35 +3185,79 @@ class DC(_core.Object): return _gdi_.DC_GetSizeMMTuple(*args, **kwargs) def DeviceToLogicalX(*args, **kwargs): - """DeviceToLogicalX(self, int x) -> int""" + """ + DeviceToLogicalX(self, int x) -> int + + Convert device X coordinate to logical coordinate, using the current + mapping mode. + """ return _gdi_.DC_DeviceToLogicalX(*args, **kwargs) def DeviceToLogicalY(*args, **kwargs): - """DeviceToLogicalY(self, int y) -> int""" + """ + DeviceToLogicalY(self, int y) -> int + + Converts device Y coordinate to logical coordinate, using the current + mapping mode. + """ return _gdi_.DC_DeviceToLogicalY(*args, **kwargs) def DeviceToLogicalXRel(*args, **kwargs): - """DeviceToLogicalXRel(self, int x) -> int""" + """ + DeviceToLogicalXRel(self, int x) -> int + + 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. + """ return _gdi_.DC_DeviceToLogicalXRel(*args, **kwargs) def DeviceToLogicalYRel(*args, **kwargs): - """DeviceToLogicalYRel(self, int y) -> int""" + """ + DeviceToLogicalYRel(self, int y) -> int + + 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. + """ return _gdi_.DC_DeviceToLogicalYRel(*args, **kwargs) def LogicalToDeviceX(*args, **kwargs): - """LogicalToDeviceX(self, int x) -> int""" + """ + LogicalToDeviceX(self, int x) -> int + + Converts logical X coordinate to device coordinate, using the current + mapping mode. + """ return _gdi_.DC_LogicalToDeviceX(*args, **kwargs) def LogicalToDeviceY(*args, **kwargs): - """LogicalToDeviceY(self, int y) -> int""" + """ + LogicalToDeviceY(self, int y) -> int + + Converts logical Y coordinate to device coordinate, using the current + mapping mode. + """ return _gdi_.DC_LogicalToDeviceY(*args, **kwargs) def LogicalToDeviceXRel(*args, **kwargs): - """LogicalToDeviceXRel(self, int x) -> int""" + """ + LogicalToDeviceXRel(self, int x) -> int + + 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. + """ return _gdi_.DC_LogicalToDeviceXRel(*args, **kwargs) def LogicalToDeviceYRel(*args, **kwargs): - """LogicalToDeviceYRel(self, int y) -> int""" + """ + LogicalToDeviceYRel(self, int y) -> int + + 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. + """ return _gdi_.DC_LogicalToDeviceYRel(*args, **kwargs) def CanDrawBitmap(*args, **kwargs): @@ -2717,67 +3269,145 @@ class DC(_core.Object): return _gdi_.DC_CanGetTextExtent(*args, **kwargs) def GetDepth(*args, **kwargs): - """GetDepth(self) -> int""" + """ + GetDepth(self) -> int + + Returns the colour depth of the DC. + """ return _gdi_.DC_GetDepth(*args, **kwargs) def GetPPI(*args, **kwargs): - """GetPPI(self) -> Size""" + """ + GetPPI(self) -> Size + + Resolution in Pixels per inch + """ return _gdi_.DC_GetPPI(*args, **kwargs) def Ok(*args, **kwargs): - """Ok(self) -> bool""" + """ + Ok(self) -> bool + + Returns true if the DC is ok to use. + """ return _gdi_.DC_Ok(*args, **kwargs) def GetBackgroundMode(*args, **kwargs): - """GetBackgroundMode(self) -> int""" + """ + GetBackgroundMode(self) -> int + + Returns the current background mode, either ``wx.SOLID`` or + ``wx.TRANSPARENT``. + """ return _gdi_.DC_GetBackgroundMode(*args, **kwargs) def GetBackground(*args, **kwargs): - """GetBackground(self) -> Brush""" + """ + GetBackground(self) -> Brush + + Gets the brush used for painting the background. + """ return _gdi_.DC_GetBackground(*args, **kwargs) def GetBrush(*args, **kwargs): - """GetBrush(self) -> Brush""" + """ + GetBrush(self) -> Brush + + Gets the current brush + """ return _gdi_.DC_GetBrush(*args, **kwargs) def GetFont(*args, **kwargs): - """GetFont(self) -> Font""" + """ + GetFont(self) -> Font + + Gets the current font + """ return _gdi_.DC_GetFont(*args, **kwargs) def GetPen(*args, **kwargs): - """GetPen(self) -> Pen""" + """ + GetPen(self) -> Pen + + Gets the current pen + """ return _gdi_.DC_GetPen(*args, **kwargs) def GetTextBackground(*args, **kwargs): - """GetTextBackground(self) -> Colour""" + """ + GetTextBackground(self) -> Colour + + Gets the current text background colour + """ return _gdi_.DC_GetTextBackground(*args, **kwargs) def GetTextForeground(*args, **kwargs): - """GetTextForeground(self) -> Colour""" + """ + GetTextForeground(self) -> Colour + + Gets the current text foreground colour + """ return _gdi_.DC_GetTextForeground(*args, **kwargs) def SetTextForeground(*args, **kwargs): - """SetTextForeground(self, Colour colour)""" + """ + SetTextForeground(self, Colour colour) + + Sets the current text foreground colour for the DC. + """ return _gdi_.DC_SetTextForeground(*args, **kwargs) def SetTextBackground(*args, **kwargs): - """SetTextBackground(self, Colour colour)""" + """ + SetTextBackground(self, Colour colour) + + Sets the current text background colour for the DC. + """ return _gdi_.DC_SetTextBackground(*args, **kwargs) def GetMapMode(*args, **kwargs): - """GetMapMode(self) -> int""" + """ + GetMapMode(self) -> int + + Gets the current *mapping mode* for the device context + """ return _gdi_.DC_GetMapMode(*args, **kwargs) def SetMapMode(*args, **kwargs): - """SetMapMode(self, int mode)""" + """ + SetMapMode(self, 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. + ================ ============================================= + + """ return _gdi_.DC_SetMapMode(*args, **kwargs) def GetUserScale(*args, **kwargs): - """GetUserScale() -> (xScale, yScale)""" + """ + GetUserScale(self) -> (xScale, yScale) + + Gets the current user scale factor (set by `SetUserScale`). + """ return _gdi_.DC_GetUserScale(*args, **kwargs) def SetUserScale(*args, **kwargs): - """SetUserScale(self, double x, double y)""" + """ + SetUserScale(self, double x, double y) + + Sets the user scaling factor, useful for applications which require + 'zooming'. + """ return _gdi_.DC_SetUserScale(*args, **kwargs) def GetLogicalScale(*args, **kwargs): @@ -2821,55 +3451,154 @@ class DC(_core.Object): return _gdi_.DC_SetDeviceOriginPoint(*args, **kwargs) def SetAxisOrientation(*args, **kwargs): - """SetAxisOrientation(self, bool xLeftRight, bool yBottomUp)""" + """ + SetAxisOrientation(self, 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. + """ return _gdi_.DC_SetAxisOrientation(*args, **kwargs) def GetLogicalFunction(*args, **kwargs): - """GetLogicalFunction(self) -> int""" + """ + GetLogicalFunction(self) -> int + + Gets the current logical function (set by `SetLogicalFunction`). + """ return _gdi_.DC_GetLogicalFunction(*args, **kwargs) def SetLogicalFunction(*args, **kwargs): - """SetLogicalFunction(self, int function)""" + """ + SetLogicalFunction(self, 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. + + """ return _gdi_.DC_SetLogicalFunction(*args, **kwargs) def SetOptimization(*args, **kwargs): - """SetOptimization(self, bool opt)""" + """ + SetOptimization(self, 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. + """ return _gdi_.DC_SetOptimization(*args, **kwargs) def GetOptimization(*args, **kwargs): - """GetOptimization(self) -> bool""" + """ + GetOptimization(self) -> bool + + Returns true if device context optimization is on. See + `SetOptimization` for . + """ return _gdi_.DC_GetOptimization(*args, **kwargs) def CalcBoundingBox(*args, **kwargs): - """CalcBoundingBox(self, int x, int y)""" + """ + CalcBoundingBox(self, int x, int y) + + Adds the specified point to the bounding box which can be retrieved + with `MinX`, `MaxX` and `MinY`, `MaxY` or `GetBoundingBox` functions. + """ return _gdi_.DC_CalcBoundingBox(*args, **kwargs) def CalcBoundingBoxPoint(*args, **kwargs): - """CalcBoundingBoxPoint(self, Point point)""" + """ + CalcBoundingBoxPoint(self, Point point) + + Adds the specified point to the bounding box which can be retrieved + with `MinX`, `MaxX` and `MinY`, `MaxY` or `GetBoundingBox` functions. + """ return _gdi_.DC_CalcBoundingBoxPoint(*args, **kwargs) def ResetBoundingBox(*args, **kwargs): - """ResetBoundingBox(self)""" + """ + ResetBoundingBox(self) + + Resets the bounding box: after a call to this function, the bounding + box doesn't contain anything. + """ return _gdi_.DC_ResetBoundingBox(*args, **kwargs) def MinX(*args, **kwargs): - """MinX(self) -> int""" + """ + MinX(self) -> int + + Gets the minimum horizontal extent used in drawing commands so far. + """ return _gdi_.DC_MinX(*args, **kwargs) def MaxX(*args, **kwargs): - """MaxX(self) -> int""" + """ + MaxX(self) -> int + + Gets the maximum horizontal extent used in drawing commands so far. + """ return _gdi_.DC_MaxX(*args, **kwargs) def MinY(*args, **kwargs): - """MinY(self) -> int""" + """ + MinY(self) -> int + + Gets the minimum vertical extent used in drawing commands so far. + """ return _gdi_.DC_MinY(*args, **kwargs) def MaxY(*args, **kwargs): - """MaxY(self) -> int""" + """ + MaxY(self) -> int + + Gets the maximum vertical extent used in drawing commands so far. + """ return _gdi_.DC_MaxY(*args, **kwargs) def GetBoundingBox(*args, **kwargs): - """GetBoundingBox() -> (x1,y1, x2,y2)""" + """ + GetBoundingBox() -> (x1,y1, x2,y2) + + Returns the min and max points used in drawing commands so far. + """ return _gdi_.DC_GetBoundingBox(*args, **kwargs) def __nonzero__(self): return self.Ok() @@ -2901,6 +3630,16 @@ class DC(_core.Object): return _gdi_.DC__DrawTextList(*args, **kwargs) 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): @@ -2911,6 +3650,16 @@ class DC(_core.Object): 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): @@ -2921,6 +3670,18 @@ class DC(_core.Object): 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): @@ -2937,6 +3698,18 @@ class DC(_core.Object): 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): @@ -2953,8 +3726,20 @@ class DC(_core.Object): def DrawPolygonList(self, polygons, pens=None, brushes=None): - ## Note: This does not currently support fill style or offset - ## you can always use the non-List version if need be. + """ + 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): @@ -2970,10 +3755,20 @@ class DC(_core.Object): return self._DrawPolygonList(polygons, pens, brushes) - def DrawTextList(self, textList, coords, foregrounds = None, backgrounds = None, fonts = None): - ## NOTE: this does not currently support changing the font - ## Make sure you set Background mode to wxSolid (DC.SetBackgroundMode) - ## If you want backgounds to do anything. + 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): @@ -3003,16 +3798,51 @@ _gdi_.DC_swigregister(DCPtr) #--------------------------------------------------------------------------- class MemoryDC(DC): + """ + 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 usign 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. + + """ def __repr__(self): return "<%s.%s; proxy of C++ wxMemoryDC instance at %s>" % (self.__class__.__module__, self.__class__.__name__, self.this,) def __init__(self, *args, **kwargs): - """__init__(self) -> MemoryDC""" + """ + __init__(self) -> MemoryDC + + Constructs a new memory device context. + + Use the Ok member to test whether the constructor was successful in + creating a usable device context. Don't forget to select a bitmap into + the DC before drawing on it. + """ newobj = _gdi_.new_MemoryDC(*args, **kwargs) self.this = newobj.this self.thisown = 1 del newobj.thisown def SelectObject(*args, **kwargs): - """SelectObject(self, Bitmap bitmap)""" + """ + SelectObject(self, Bitmap 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. + """ return _gdi_.MemoryDC_SelectObject(*args, **kwargs) @@ -3024,7 +3854,11 @@ class MemoryDCPtr(MemoryDC): _gdi_.MemoryDC_swigregister(MemoryDCPtr) def MemoryDCFromDC(*args, **kwargs): - """MemoryDCFromDC(DC oldDC) -> MemoryDC""" + """ + MemoryDCFromDC(DC oldDC) -> MemoryDC + + Creates a DC that is compatible with the oldDC. + """ val = _gdi_.new_MemoryDCFromDC(*args, **kwargs) val.thisown = 1 return val @@ -3032,27 +3866,52 @@ def MemoryDCFromDC(*args, **kwargs): #--------------------------------------------------------------------------- class BufferedDC(MemoryDC): + """ + 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. + + It 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`. + + """ def __repr__(self): return "<%s.%s; proxy of C++ wxBufferedDC instance at %s>" % (self.__class__.__module__, self.__class__.__name__, self.this,) def __init__(self, *args): """ __init__(self, DC dc, Bitmap buffer) -> BufferedDC __init__(self, DC dc, Size area) -> BufferedDC + + Constructs a buffered DC. """ newobj = _gdi_.new_BufferedDC(*args) self.this = newobj.this self.thisown = 1 del newobj.thisown - self._dc = args[0] # save a ref so the other dc will not be deleted before self + self.__dc = args[0] # save a ref so the other dc will not be deleted before self def __del__(self, destroy=_gdi_.delete_BufferedDC): - """__del__(self)""" + """ + __del__(self) + + Copies everything drawn on the DC so far to the underlying DC + associated with this object, if any. + """ try: if self.thisown: destroy(self) except: pass def UnMask(*args, **kwargs): - """UnMask(self)""" + """ + UnMask(self) + + 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. + """ return _gdi_.BufferedDC_UnMask(*args, **kwargs) @@ -3063,18 +3922,40 @@ class BufferedDCPtr(BufferedDC): self.__class__ = BufferedDC _gdi_.BufferedDC_swigregister(BufferedDCPtr) -def BufferedDCInternalBuffer(*args): - """BufferedDCInternalBuffer(DC dc, Size area) -> BufferedDC""" - val = _gdi_.new_BufferedDCInternalBuffer(*args) - val.thisown = 1 - val._dc = args[0] # save a ref so the other dc will not be deleted before self - return val - class BufferedPaintDC(BufferedDC): + """ + 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) + + + + """ def __repr__(self): return "<%s.%s; proxy of C++ wxBufferedPaintDC instance at %s>" % (self.__class__.__module__, self.__class__.__name__, self.this,) def __init__(self, *args, **kwargs): - """__init__(self, Window window, Bitmap buffer=NullBitmap) -> BufferedPaintDC""" + """ + __init__(self, Window window, Bitmap buffer=NullBitmap) -> BufferedPaintDC + + 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). + + + """ newobj = _gdi_.new_BufferedPaintDC(*args, **kwargs) self.this = newobj.this self.thisown = 1 @@ -3090,24 +3971,66 @@ _gdi_.BufferedPaintDC_swigregister(BufferedPaintDCPtr) #--------------------------------------------------------------------------- class ScreenDC(DC): + """ + 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. + + """ def __repr__(self): return "<%s.%s; proxy of C++ wxScreenDC instance at %s>" % (self.__class__.__module__, self.__class__.__name__, self.this,) def __init__(self, *args, **kwargs): - """__init__(self) -> ScreenDC""" + """ + __init__(self) -> ScreenDC + + 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. + + """ newobj = _gdi_.new_ScreenDC(*args, **kwargs) self.this = newobj.this self.thisown = 1 del newobj.thisown def StartDrawingOnTopWin(*args, **kwargs): - """StartDrawingOnTopWin(self, Window window) -> bool""" + """ + StartDrawingOnTopWin(self, Window window) -> bool + + Specify that the area of the screen to be drawn upon coincides with + the given window. + + :see: `EndDrawingOnTop` + """ return _gdi_.ScreenDC_StartDrawingOnTopWin(*args, **kwargs) def StartDrawingOnTop(*args, **kwargs): - """StartDrawingOnTop(self, Rect rect=None) -> bool""" + """ + StartDrawingOnTop(self, Rect rect=None) -> bool + + Specify that the area is the given rectangle, or the whole screen if + ``None`` is passed. + + :see: `EndDrawingOnTop` + """ return _gdi_.ScreenDC_StartDrawingOnTop(*args, **kwargs) def EndDrawingOnTop(*args, **kwargs): - """EndDrawingOnTop(self) -> bool""" + """ + EndDrawingOnTop(self) -> bool + + 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. + """ return _gdi_.ScreenDC_EndDrawingOnTop(*args, **kwargs) @@ -3121,10 +4044,27 @@ _gdi_.ScreenDC_swigregister(ScreenDCPtr) #--------------------------------------------------------------------------- class ClientDC(DC): + """ + 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). + + """ def __repr__(self): return "<%s.%s; proxy of C++ wxClientDC instance at %s>" % (self.__class__.__module__, self.__class__.__name__, self.this,) def __init__(self, *args, **kwargs): - """__init__(self, Window win) -> ClientDC""" + """ + __init__(self, Window win) -> ClientDC + + Constructor. Pass the window on which you wish to paint. + """ newobj = _gdi_.new_ClientDC(*args, **kwargs) self.this = newobj.this self.thisown = 1 @@ -3140,10 +4080,30 @@ _gdi_.ClientDC_swigregister(ClientDCPtr) #--------------------------------------------------------------------------- class PaintDC(DC): + """ + 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. + + """ def __repr__(self): return "<%s.%s; proxy of C++ wxPaintDC instance at %s>" % (self.__class__.__module__, self.__class__.__name__, self.this,) def __init__(self, *args, **kwargs): - """__init__(self, Window win) -> PaintDC""" + """ + __init__(self, Window win) -> PaintDC + + Constructor. Pass the window on which you wish to paint. + """ newobj = _gdi_.new_PaintDC(*args, **kwargs) self.this = newobj.this self.thisown = 1 @@ -3159,10 +4119,20 @@ _gdi_.PaintDC_swigregister(PaintDCPtr) #--------------------------------------------------------------------------- class WindowDC(DC): + """ + 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. + """ def __repr__(self): return "<%s.%s; proxy of C++ wxWindowDC instance at %s>" % (self.__class__.__module__, self.__class__.__name__, self.this,) def __init__(self, *args, **kwargs): - """__init__(self, Window win) -> WindowDC""" + """ + __init__(self, Window win) -> WindowDC + + Constructor. Pass the window on which you wish to paint. + """ newobj = _gdi_.new_WindowDC(*args, **kwargs) self.this = newobj.this self.thisown = 1 @@ -3178,10 +4148,24 @@ _gdi_.WindowDC_swigregister(WindowDCPtr) #--------------------------------------------------------------------------- class MirrorDC(DC): + """ + 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. + """ def __repr__(self): return "<%s.%s; proxy of C++ wxMirrorDC instance at %s>" % (self.__class__.__module__, self.__class__.__name__, self.this,) def __init__(self, *args, **kwargs): - """__init__(self, DC dc, bool mirror) -> MirrorDC""" + """ + __init__(self, DC dc, bool mirror) -> MirrorDC + + 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. + """ newobj = _gdi_.new_MirrorDC(*args, **kwargs) self.this = newobj.this self.thisown = 1 @@ -3197,10 +4181,16 @@ _gdi_.MirrorDC_swigregister(MirrorDCPtr) #--------------------------------------------------------------------------- class PostScriptDC(DC): + """This is a `wx.DC` that can write to PostScript files on any platform.""" def __repr__(self): return "<%s.%s; proxy of C++ wxPostScriptDC instance at %s>" % (self.__class__.__module__, self.__class__.__name__, self.this,) def __init__(self, *args, **kwargs): - """__init__(self, wxPrintData printData) -> PostScriptDC""" + """ + __init__(self, wxPrintData printData) -> PostScriptDC + + Constructs a PostScript printer device context from a `wx.PrintData` + object. + """ newobj = _gdi_.new_PostScriptDC(*args, **kwargs) self.this = newobj.this self.thisown = 1 @@ -3214,12 +4204,21 @@ class PostScriptDC(DC): return _gdi_.PostScriptDC_SetPrintData(*args, **kwargs) def SetResolution(*args, **kwargs): - """SetResolution(int ppi)""" + """ + SetResolution(int ppi) + + Set resolution (in pixels per inch) that will be used in PostScript + output. Default is 720ppi. + """ return _gdi_.PostScriptDC_SetResolution(*args, **kwargs) SetResolution = staticmethod(SetResolution) def GetResolution(*args, **kwargs): - """GetResolution() -> int""" + """ + GetResolution() -> int + + Return resolution used in PostScript output. + """ return _gdi_.PostScriptDC_GetResolution(*args, **kwargs) GetResolution = staticmethod(GetResolution) @@ -3232,11 +4231,20 @@ class PostScriptDCPtr(PostScriptDC): _gdi_.PostScriptDC_swigregister(PostScriptDCPtr) def PostScriptDC_SetResolution(*args, **kwargs): - """PostScriptDC_SetResolution(int ppi)""" + """ + PostScriptDC_SetResolution(int ppi) + + Set resolution (in pixels per inch) that will be used in PostScript + output. Default is 720ppi. + """ return _gdi_.PostScriptDC_SetResolution(*args, **kwargs) def PostScriptDC_GetResolution(*args, **kwargs): - """PostScriptDC_GetResolution() -> int""" + """ + PostScriptDC_GetResolution() -> int + + Return resolution used in PostScript output. + """ return _gdi_.PostScriptDC_GetResolution(*args, **kwargs) #---------------------------------------------------------------------------