X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/3c9e0b81fa917be572f930b40890f64505e43725..36a0190ebd5bd9a7302f60f6dcd608b80574e21c:/interface/wx/graphics.h diff --git a/interface/wx/graphics.h b/interface/wx/graphics.h index 7373e86861..96b3457508 100644 --- a/interface/wx/graphics.h +++ b/interface/wx/graphics.h @@ -2,7 +2,6 @@ // Name: graphics.h // Purpose: interface of various wxGraphics* classes // Author: wxWidgets team -// RCS-ID: $Id$ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -269,11 +268,11 @@ enum wxCompositionMode Represents a bitmap. The objects of this class are not created directly but only via - wxGraphicsContext or wxGraphicsRenderer CreateBitmap() and - 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. + 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 { @@ -282,6 +281,28 @@ 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; }; /** @@ -342,14 +363,14 @@ 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 @@ -358,7 +379,7 @@ 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. @@ -368,7 +389,25 @@ public: @see wxGraphicsRenderer::CreateContext() */ - static wxGraphicsContext* Create(const wxEnhMetaFileDC& dc); + 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. @@ -393,6 +432,18 @@ public: */ 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. @@ -414,6 +465,19 @@ 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 @@ -460,6 +524,14 @@ 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. */ @@ -735,15 +807,17 @@ public: virtual wxAntialiasMode GetAntialiasMode() const ; /** - Sets the interpolation quality, returns true if it supported + 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 + Returns the current interpolation quality. */ virtual wxInterpolationQuality GetInterpolationQuality() const; - + /** Sets the compositing operator, returns true if it supported */ @@ -754,6 +828,66 @@ 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); + }; /** @@ -846,7 +980,7 @@ public: /** Returns the number of stops. */ - unsigned GetCount() const; + size_t GetCount() const; /** Set the start colour to @a col @@ -900,6 +1034,25 @@ public: */ 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. @@ -917,17 +1070,17 @@ 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. @@ -935,7 +1088,17 @@ public: This function, as wxEnhMetaFileDC class itself, is only available only under MSW. */ - virtual wxGraphicsContext* CreateContext(const wxEnhMetaFileDC& dc) = 0; + 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. @@ -966,6 +1129,35 @@ 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. @@ -1025,6 +1217,8 @@ public: on GTK we currently default to the cairo renderer. */ static wxGraphicsRenderer* GetDefaultRenderer(); + static wxGraphicsRenderer* GetCairoRenderer(); + }; @@ -1147,7 +1341,10 @@ public: virtual bool IsIdentity() const; /** - Rotates this matrix (in radians). + Rotates this matrix clockwise (in radians). + + @param angle + Rotation angle in radians, clockwise. */ virtual void Rotate(wxDouble angle); @@ -1180,3 +1377,10 @@ 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;