X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4ee4c7b948e76377a6947d3ffbe5099870d0c3e9..2d5efafe74f3788bfd3b3d8b1e8e13135a595ed5:/interface/wx/graphics.h diff --git a/interface/wx/graphics.h b/interface/wx/graphics.h index 638787d069..a8ebbabd67 100644 --- a/interface/wx/graphics.h +++ b/interface/wx/graphics.h @@ -3,7 +3,7 @@ // Purpose: interface of various wxGraphics* classes // Author: wxWidgets team // RCS-ID: $Id$ -// Licence: wxWindows license +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// /** @@ -116,12 +116,12 @@ public: @return @true if the point is within the path. */ bool Contains(const wxPoint2DDouble& c, - int fillStyle = wxODDEVEN_RULE) const; + wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const; /** @return @true if the point is within the path. */ virtual bool Contains(wxDouble x, wxDouble y, - int fillStyle = wxODDEVEN_RULE) const; + wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const; /** Gets the bounding box enclosing all points (possibly including control @@ -201,7 +201,7 @@ public: }; /** - Anti-aliasing modes used by wxGraphicsContext::SetAntialisingMode + Anti-aliasing modes used by wxGraphicsContext::SetAntialiasMode(). */ enum wxAntialiasMode { @@ -212,10 +212,27 @@ enum wxAntialiasMode wxANTIALIAS_DEFAULT, }; +/** + Interpolation quality used by wxGraphicsContext::SetInterpolationQuality(). + */ +enum wxInterpolationQuality +{ + /** default interpolation, based on type of context, in general medium quality */ + wxINTERPOLATION_DEFAULT, + /** no interpolation */ + wxINTERPOLATION_NONE, + /** fast interpolation, suited for interactivity */ + wxINTERPOLATION_FAST, + /** better quality */ + wxINTERPOLATION_GOOD, + /** best quality, not suited for interactivity */ + wxINTERPOLATION_BEST +}; + /** Compositing is done using Porter-Duff compositions (see http://keithp.com/~keithp/porterduff/p253-porter.pdf) with - wxGraphicsContext::SetCompositionMode + wxGraphicsContext::SetCompositionMode(). The description give a short equation on how the values of a resulting pixel are calculated. @@ -224,6 +241,14 @@ enum wxAntialiasMode */ enum wxCompositionMode { + /** + Indicates invalid or unsupported composition mode. + + This value can't be passed to wxGraphicsContext::SetCompositionMode(). + + @since 2.9.2 + */ + wxCOMPOSITION_INVALID = -1, wxCOMPOSITION_CLEAR, /**< @e R = 0 */ wxCOMPOSITION_SOURCE, /**< @e R = S */ wxCOMPOSITION_OVER, /**< @e R = @e S + @e D*(1 - @e Sa) */ @@ -237,9 +262,49 @@ enum wxCompositionMode wxCOMPOSITION_DEST_OUT, /**< @e R = @e D*(1 - @e Sa) */ wxCOMPOSITION_DEST_ATOP, /**< @e R = @e S*(1 - @e Da) + @e D*@e Sa */ wxCOMPOSITION_XOR, /**< @e R = @e S*(1 - @e Da) + @e D*(1 - @e Sa) */ - wxCOMPOSITION_ADD, /**< @e R = @e S + @e D */ + wxCOMPOSITION_ADD /**< @e R = @e S + @e D */ }; +/** + Represents a bitmap. + + The objects of this class are not created directly but only via + wxGraphicsContext or wxGraphicsRenderer CreateBitmap(), + CreateBitmapFromImage() or CreateSubBitmap() methods. They can subsequently + be used with wxGraphicsContext::DrawBitmap(). The only other operation is + testing for the bitmap validity which can be performed using IsNull() + method inherited from the base class. + */ +class wxGraphicsBitmap : public wxGraphicsObject +{ +public: + /** + Default constructor creates an invalid bitmap. + */ + wxGraphicsBitmap() {} + + /** + Return the contents of this bitmap as wxImage. + + Using this method is more efficient than converting wxGraphicsBitmap to + wxBitmap first and then to wxImage and can be useful if, for example, + you want to save wxGraphicsBitmap as a disk file in a format not + directly supported by wxBitmap. + + Invalid image is returned if the bitmap is invalid. + + @since 2.9.3 + */ + wxImage ConvertToImage() const; + + /** + Return the pointer to the native bitmap data. (CGImageRef for Core Graphics, + cairo_surface_t for Cairo, Bitmap* for GDI+.) + + @since 2.9.4 + */ + void* GetNativeBitmap() const; +}; /** @class wxGraphicsContext @@ -299,14 +364,14 @@ public: @see wxGraphicsRenderer::CreateContext() */ - static wxGraphicsContext* Create(const wxWindowDC& dc); + static wxGraphicsContext* Create(const wxWindowDC& windowDC); /** Creates a wxGraphicsContext from a wxMemoryDC @see wxGraphicsRenderer::CreateContext() */ - static wxGraphicsContext* Create(const wxMemoryDC& dc); + static wxGraphicsContext* Create(const wxMemoryDC& memoryDC); /** Creates a wxGraphicsContext from a wxPrinterDC. Under GTK+, this will @@ -315,7 +380,35 @@ public: @see wxGraphicsRenderer::CreateContext(), @ref overview_unixprinting */ - static wxGraphicsContext* Create(const wxPrinterDC& dc); + static wxGraphicsContext* Create(const wxPrinterDC& printerDC); + + /** + Creates a wxGraphicsContext from a wxEnhMetaFileDC. + + This function, as wxEnhMetaFileDC class itself, is only available only + under MSW. + + @see wxGraphicsRenderer::CreateContext() + */ + static wxGraphicsContext* Create(const wxEnhMetaFileDC& metaFileDC); + + /** + Creates a wxGraphicsContext associated with a wxImage. + + The image specifies the size of the context as well as whether alpha is + supported (if wxImage::HasAlpha()) or not and the initial contents of + the context. The @a image object must have a life time greater than + that of the new context as the context copies its contents back to the + image when it is destroyed. + + @since 2.9.3 + */ + static wxGraphicsContext* Create(wxImage& image); + + /** + Create a lightweight context that can be used only for measuring text. + */ + static wxGraphicsContext* Create(); /** Clips drawings to the specified region. @@ -333,6 +426,35 @@ public: */ virtual void ConcatTransform(const wxGraphicsMatrix& matrix) = 0; + /** + Creates wxGraphicsBitmap from an existing wxBitmap. + + Returns an invalid wxNullGraphicsBitmap on failure. + */ + virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) = 0; + + /** + Creates wxGraphicsBitmap from an existing wxImage. + + This method is more efficient than converting wxImage to wxBitmap first + and then calling CreateBitmap() but otherwise has the same effect. + + Returns an invalid wxNullGraphicsBitmap on failure. + + @since 2.9.3 + */ + virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image); + + /** + Extracts a sub-bitmap from an existing bitmap. + + Currently this function is implemented in the native MSW and OS X + versions but not when using Cairo. + */ + virtual wxGraphicsBitmap CreateSubBitmap(const wxGraphicsBitmap& bitmap, + wxDouble x, wxDouble y, + wxDouble w, wxDouble h) = 0; + /** Creates a native brush from a wxBrush. */ @@ -344,6 +466,19 @@ public: virtual wxGraphicsFont CreateFont(const wxFont& font, const wxColour& col = *wxBLACK) const; + /** + Creates a font object with the specified attributes. + + The use of overload taking wxFont is preferred, see + wxGraphicsRenderer::CreateFont() for more details. + + @since 2.9.3 + */ + virtual wxGraphicsFont CreateFont(double sizeInPixels, + const wxString& facename, + int flags = wxFONTFLAG_DEFAULT, + const wxColour& col = *wxBLACK) const; + /** Creates a wxGraphicsContext from a native context. This native context must be a CGContextRef for Core Graphics, a Graphics pointer for @@ -390,6 +525,14 @@ public: wxDouble tx = 0.0, wxDouble ty = 0.0) const; + /** + Creates a native affine transformation matrix from the passed + generic one. + + @since 2.9.4 + */ + wxGraphicsMatrix CreateMatrix(const wxAffineMatrix2DBase& mat) const; + /** Creates a native graphics path which is initially empty. */ @@ -403,7 +546,7 @@ public: /** Creates a native brush with a radial gradient. - The brush originats at (@a xo, @a yc) and ends on a circle around + The brush originates at (@a xo, @a yc) and ends on a circle around (@a xc, @a yc) with the given @a radius. The gradient may be specified either by its start and end colours @a @@ -430,8 +573,14 @@ public: Draws the bitmap. In case of a mono bitmap, this is treated as a mask and the current brushed is used for filling. */ - virtual void DrawBitmap(const wxBitmap& bmp, wxDouble x, wxDouble y, + //@{ + virtual void DrawBitmap(const wxGraphicsBitmap& bmp, + wxDouble x, wxDouble y, + wxDouble w, wxDouble h ) = 0; + virtual void DrawBitmap(const wxBitmap& bmp, + wxDouble x, wxDouble y, wxDouble w, wxDouble h) = 0; + //@} /** Draws an ellipse. @@ -620,8 +769,10 @@ public: virtual void StrokeLines(size_t n, const wxPoint2DDouble* beginPoints, const wxPoint2DDouble* endPoints); /** - Stroke disconnected lines from begin to end points, fastest method - available for this purpose. + Stroke lines connecting all the points. + + Unlike the other overload of this function, this method draws a single + polyline and not a number of disconnected lines. */ virtual void StrokeLines(size_t n, const wxPoint2DDouble* points); @@ -656,6 +807,18 @@ public: */ virtual wxAntialiasMode GetAntialiasMode() const ; + /** + Sets the interpolation quality, returns true if it is supported. + + Not implemented in Cairo backend currently. + */ + virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation) = 0; + + /** + Returns the current interpolation quality. + */ + virtual wxInterpolationQuality GetInterpolationQuality() const; + /** Sets the compositing operator, returns true if it supported */ @@ -666,6 +829,66 @@ public: */ virtual wxCompositionMode GetCompositionMode() const; + + /** + Push the current state of the context's transformation matrix on a + stack. + + @see wxGraphicsContext::PopState + */ + virtual void PushState() = 0; + + /** + Pops a stored state from the stack and sets the current transformation + matrix to that state. + + @see wxGraphicsContext::PopState + */ + virtual void PopState() = 0; + + + virtual bool ShouldOffset() const; + virtual void EnableOffset(bool enable = true); + void DisableOffset(); + bool OffsetEnabled(); + + /** + Begin a new document (relevant only for printing / pdf etc.) + If there is a progress dialog, message will be shown. + */ + virtual bool StartDoc( const wxString& message ); + + /** + Done with that document (relevant only for printing / pdf etc.) + */ + virtual void EndDoc(); + + /** + Opens a new page (relevant only for printing / pdf etc.) with the given + size in points. (If both are null the default page size will be used.) + */ + virtual void StartPage( wxDouble width = 0, wxDouble height = 0 ); + + /** + Ends the current page (relevant only for printing / pdf etc.) + */ + virtual void EndPage(); + + /** + Make sure that the current content of this context is immediately visible. + */ + virtual void Flush(); + + /** + Returns the size of the graphics context in device coordinates. + */ + void GetSize(wxDouble* width, wxDouble* height) const; + + /** + Returns the resolution of the graphics context in device points per inch. + */ + virtual void GetDPI( wxDouble* dpiX, wxDouble* dpiY); + }; /** @@ -686,12 +909,10 @@ public: @param col The colour of this stop. Note that the alpha component of the colour is honoured thus allowing the background colours to partially show through the gradient. - @param pos The stop position, must be in [0, 1) range with 0 being the - beginning and 1 the end of the gradient (but it doesn't make sense - to create a stop at position 1 because it would never be visible - anyhow). + @param pos The stop position, must be in [0, 1] range with 0 being the + beginning and 1 the end of the gradient. */ - wxGraphicsGradientStop(wxColour col, float pos); + wxGraphicsGradientStop(wxColour col = wxTransparentColour, float pos = 0.); /// Return the stop colour. const wxColour& GetColour() const; @@ -709,7 +930,7 @@ public: /** Change the stop position. - @param pos The new position, must always be in [0, 1) range. + @param pos The new position, must always be in [0, 1] range. */ void SetPosition(float pos); }; @@ -807,6 +1028,41 @@ public: class wxGraphicsRenderer : public wxObject { public: + /** + Creates wxGraphicsBitmap from an existing wxBitmap. + + Returns an invalid wxNullGraphicsBitmap on failure. + */ + virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) = 0; + + /** + Creates wxGraphicsBitmap from an existing wxImage. + + This method is more efficient than converting wxImage to wxBitmap first + and then calling CreateBitmap() but otherwise has the same effect. + + Returns an invalid wxNullGraphicsBitmap on failure. + + @since 2.9.3 + */ + virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image) = 0; + + /** + Creates a wxImage from a wxGraphicsBitmap. + + This method is used by the more convenient wxGraphicsBitmap::ConvertToImage. + */ + virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp) = 0; + + /** + Creates wxGraphicsBitmap from a native bitmap handle. + + @a bitmap meaning is platform-dependent. Currently it's a GDI+ @c + Bitmap pointer under MSW, @c CGImage pointer under OS X or a @c + cairo_surface_t pointer when using Cairo under any platform. + */ + virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap ) = 0; + /** Creates a wxGraphicsContext from a wxWindow. */ @@ -815,17 +1071,35 @@ public: /** Creates a wxGraphicsContext from a wxWindowDC */ - virtual wxGraphicsContext* CreateContext(const wxWindowDC& dc) = 0 ; + virtual wxGraphicsContext* CreateContext(const wxWindowDC& windowDC) = 0 ; /** Creates a wxGraphicsContext from a wxMemoryDC */ - virtual wxGraphicsContext* CreateContext(const wxMemoryDC& dc) = 0 ; + virtual wxGraphicsContext* CreateContext(const wxMemoryDC& memoryDC) = 0 ; /** Creates a wxGraphicsContext from a wxPrinterDC */ - virtual wxGraphicsContext* CreateContext(const wxPrinterDC& dc) = 0 ; + virtual wxGraphicsContext* CreateContext(const wxPrinterDC& printerDC) = 0 ; + + /** + Creates a wxGraphicsContext from a wxEnhMetaFileDC. + + This function, as wxEnhMetaFileDC class itself, is only available only + under MSW. + */ + virtual wxGraphicsContext* CreateContext(const wxEnhMetaFileDC& metaFileDC) = 0; + + /** + Creates a wxGraphicsContext associated with a wxImage. + + This function is used by wxContext::CreateFromImage() and is not + normally called directly. + + @since 2.9.3 + */ + wxGraphicsContext* CreateContextFromImage(wxImage& image); /** Creates a native brush from a wxBrush. @@ -856,6 +1130,35 @@ public: virtual wxGraphicsFont CreateFont(const wxFont& font, const wxColour& col = *wxBLACK) = 0; + /** + Creates a graphics font with the given characteristics. + + If possible, the CreateFont() overload taking wxFont should be used + instead. The main advantage of this overload is that it can be used + without X server connection under Unix when using Cairo. + + @param sizeInPixels + Height of the font in user space units, i.e. normally pixels. + Notice that this is different from the overload taking wxFont as + wxFont size is specified in points. + @param facename + The name of the font. The same font name might not be available + under all platforms so the font name can also be empty to use the + default platform font. + @param flags + Combination of wxFontFlag enum elements. Currently only + @c wxFONTFLAG_ITALIC and @c wxFONTFLAG_BOLD are supported. By + default the normal font version is used. + @param col + The font colour, black by default. + + @since 2.9.3 + */ + virtual wxGraphicsFont CreateFont(double sizeInPixels, + const wxString& facename, + int flags = wxFONTFLAG_DEFAULT, + const wxColour& col = *wxBLACK) = 0; + /** Creates a native brush with a linear gradient. @@ -899,12 +1202,24 @@ public: wxDouble radius, const wxGraphicsGradientStops& stops) = 0; + /** + Extracts a sub-bitmap from an existing bitmap. + + Currently this function is implemented in the native MSW and OS X + versions but not when using Cairo. + */ + virtual wxGraphicsBitmap CreateSubBitmap(const wxGraphicsBitmap& bitmap, + wxDouble x, wxDouble y, + wxDouble w, wxDouble h) = 0; + /** Returns the default renderer on this platform. On OS X this is the Core Graphics (a.k.a. Quartz 2D) renderer, on MSW the GDIPlus renderer, and on GTK we currently default to the cairo renderer. */ static wxGraphicsRenderer* GetDefaultRenderer(); + static wxGraphicsRenderer* GetCairoRenderer(); + }; @@ -1027,7 +1342,10 @@ public: virtual bool IsIdentity() const; /** - Rotates this matrix (in radians). + Rotates this matrix clockwise (in radians). + + @param radians + Rotation angle in radians, clockwise. */ virtual void Rotate(wxDouble angle); @@ -1060,3 +1378,10 @@ public: virtual void Translate(wxDouble dx, wxDouble dy); }; + +const wxGraphicsPen wxNullGraphicsPen; +const wxGraphicsBrush wxNullGraphicsBrush; +const wxGraphicsFont wxNullGraphicsFont; +const wxGraphicsBitmap wxNullGraphicsBitmap; +const wxGraphicsMatrix wxNullGraphicsMatrix; +const wxGraphicsPath wxNullGraphicsPath;