wxSystemSettings::GetMetric returns -1 if the metric is not supported

[wxWidgets.git] / wxPython / src / _bitmap.i

/////////////////////////////////////////////////////////////////////////////
// Name:        _bitmap.i
// Purpose:     SWIG interface for wxBitmap and wxMask
//
// 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/image.h>
    
    static char** ConvertListOfStrings(PyObject* listOfStrings) {
        char**    cArray = NULL;
        int       count;

        if (!PyList_Check(listOfStrings)) {
            PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
            return NULL;
        }
        count = PyList_Size(listOfStrings);
        cArray = new char*[count];

        for(int x=0; x<count; x++) {
            // TODO: Need some validation and error checking here
            cArray[x] = PyString_AsString(PyList_GET_ITEM(listOfStrings, x));
        }
        return cArray;
    }

%}

//---------------------------------------------------------------------------

// TODO:  When the API stabalizes and is available on other platforms, add
// wrappers for the new wxBitmap, wxRawBitmap, wxDIB stuff...

DocStr(wxBitmap,
"The wx.Bitmap class encapsulates the concept of a platform-dependent
bitmap.  It can be either monochrome or colour, and either loaded from
a file or created dynamically.  A bitmap can be selected into a memory
device context (instance of `wx.MemoryDC`). This enables the bitmap to
be copied to a window or memory device context using `wx.DC.Blit`, or
to be used as a drawing surface.", "

The BMP and XMP image file formats are supported on all platforms by
wx.Bitmap.  Other formats are automatically loaded by `wx.Image` and
converted to a wx.Bitmap, so any image file format supported by
`wx.Image` can be used.

:todo: Add wrappers and support for raw bitmap data access.  Can this
       be be put into Python without losing the speed benefits of the
       teplates and iterators in rawbmp.h?

:todo: Find a way to do very efficient PIL Image <--> wx.Bitmap
       converstions.
");


MustHaveApp(wxBitmap);

class wxBitmap : public wxGDIObject
{
public:
    DocCtorStr(
        wxBitmap(const wxString& name, wxBitmapType type=wxBITMAP_TYPE_ANY),
        "Loads a bitmap from a file.",
        "
    :param name:  Name of the file to load the bitmap from.
    :param type: The type of image to expect.  Can be one of the following
        constants (assuming that the neccessary `wx.Image` handlers are
        loaded):

        * wx.BITMAP_TYPE_ANY
        * wx.BITMAP_TYPE_BMP
        * wx.BITMAP_TYPE_ICO
        * wx.BITMAP_TYPE_CUR
        * wx.BITMAP_TYPE_XBM
        * wx.BITMAP_TYPE_XPM
        * wx.BITMAP_TYPE_TIF
        * wx.BITMAP_TYPE_GIF
        * wx.BITMAP_TYPE_PNG
        * wx.BITMAP_TYPE_JPEG
        * wx.BITMAP_TYPE_PNM
        * wx.BITMAP_TYPE_PCX
        * wx.BITMAP_TYPE_PICT
        * wx.BITMAP_TYPE_ICON
        * wx.BITMAP_TYPE_ANI
        * wx.BITMAP_TYPE_IFF

:see: Alternate constructors `wx.EmptyBitmap`, `wx.BitmapFromIcon`,
      `wx.BitmapFromImage`, `wx.BitmapFromXPMData`,
      `wx.BitmapFromBits`
");
        
    ~wxBitmap();

    DocCtorStrName(
        wxBitmap(int width, int height, int depth=-1),
        "Creates a new bitmap of the given size.  A depth of -1 indicates the
depth of the current screen or visual. Some platforms only support 1
for monochrome and -1 for the current colour setting.", "",
        EmptyBitmap);

    DocCtorStrName(
        wxBitmap(const wxIcon& icon),
        "Create a new bitmap from a `wx.Icon` object.", "",
        BitmapFromIcon);

    DocCtorStrName(
        wxBitmap(const wxImage& image, int depth=-1),
        "Creates bitmap object from a `wx.Image`. This has to be done to
actually display a `wx.Image` as you cannot draw an image directly on
a window. The resulting bitmap will use the provided colour depth (or
that of the current screen colour depth if depth is -1) which entails
that a colour reduction may have to take place.", "",
        BitmapFromImage);

    
    %extend {
        DocStr(wxBitmap(PyObject* listOfStrings),
               "Construct a Bitmap from a list of strings formatted as XPM data.", "");
        %name(BitmapFromXPMData) wxBitmap(PyObject* listOfStrings) {
            char**    cArray = NULL;
            wxBitmap* bmp;

            cArray = ConvertListOfStrings(listOfStrings);
            if (! cArray)
                return NULL;
            bmp = new wxBitmap(cArray);
            delete [] cArray;
            return bmp;
        }

        DocStr(wxBitmap(PyObject* bits, int width, int height, int depth=1 ),
               "Creates a bitmap from an array of bits.  You should only use this
function for monochrome bitmaps (depth 1) in portable programs: in
this case the bits parameter should contain an XBM image.  For other
bit depths, the behaviour is platform dependent.", "");
        %name(BitmapFromBits) wxBitmap(PyObject* bits, int width, int height, int depth=1 ) {
            char* buf;
            int   length;
            PyString_AsStringAndSize(bits, &buf, &length);
            return new wxBitmap(buf, width, height, depth);
        }
    }    

    
#ifdef __WXMSW__
    void SetPalette(wxPalette& palette);
#endif

    // wxGDIImage methods
#ifdef __WXMSW__
    long GetHandle();
    %extend {
        void SetHandle(long handle) { self->SetHandle((WXHANDLE)handle); }
    }
#endif

    bool Ok();
    
    DocDeclStr(
        int , GetWidth(),
        "Gets the width of the bitmap in pixels.", "");
    

    DocDeclStr(
        int , GetHeight(),
        "Gets the height of the bitmap in pixels.", "");
    

    DocDeclStr(
        int , GetDepth(),
        "Gets the colour depth of the bitmap. A value of 1 indicates a
monochrome bitmap.", "");
    


    %extend {
        DocStr(GetSize, "Get the size of the bitmap.", "");
        wxSize GetSize() {
            wxSize size(self->GetWidth(), self->GetHeight());
            return size;
        }
    }

    
    DocDeclStr(
        virtual wxImage , ConvertToImage() const,
        "Creates a platform-independent image from a platform-dependent
bitmap. This preserves mask information so that bitmaps and images can
be converted back and forth without loss in that respect.", "");
    

    DocDeclStr(
        virtual wxMask* , GetMask() const,
        "Gets the associated mask (if any) which may have been loaded from a
file or explpicitly set for the bitmap.

:see: `SetMask`, `wx.Mask`
", "");
    

    DocDeclStr(
        virtual void , SetMask(wxMask* mask),
        "Sets the mask for this bitmap.

:see: `GetMask`, `wx.Mask`
", "");
    
    
    %extend {
        DocStr(SetMaskColour,
               "Create a Mask based on a specified colour in the Bitmap.", "");
        void SetMaskColour(const wxColour& colour) {
            wxMask *mask = new wxMask(*self, colour);
            self->SetMask(mask);
        }
    }


    DocDeclStr(
        virtual wxBitmap , GetSubBitmap(const wxRect& rect) const,
        "Returns a sub-bitmap of the current one as long as the rect belongs
entirely to the bitmap. This function preserves bit depth and mask
information.", "");
    

    DocDeclStr(
        virtual bool , SaveFile(const wxString &name, wxBitmapType type,
                                wxPalette *palette = NULL),
        "Saves a bitmap in the named file.  See `__init__` for a description of
the ``type`` parameter.", "");
    

    DocDeclStr(
        virtual bool , LoadFile(const wxString &name, wxBitmapType type),
        "Loads a bitmap from a file.  See `__init__` for a description of the
``type`` parameter.", "");
    

    
#if wxUSE_PALETTE
    virtual wxPalette *GetPalette() const;
    virtual void SetPalette(const wxPalette& palette);
#endif
    
    
    virtual bool CopyFromIcon(const wxIcon& icon);

    DocDeclStr(
        virtual void , SetHeight(int height),
        "Set the height property (does not affect the existing bitmap data).", "");
    
    
    DocDeclStr(
        virtual void , SetWidth(int width),
        "Set the width property (does not affect the existing bitmap data).", "");
    

    DocDeclStr(
        virtual void , SetDepth(int depth),
        "Set the depth property (does not affect the existing bitmap data).", "");
    

    %extend {
        DocStr(SetSize, "Set the bitmap size (does not affect the existing bitmap data).", "");
        void SetSize(const wxSize& size) {
            self->SetWidth(size.x);
            self->SetHeight(size.y);
        }
    }
    
#ifdef __WXMSW__
    bool CopyFromCursor(const wxCursor& cursor);
    int GetQuality();
    void SetQuality(int q);
#endif

    %pythoncode { def __nonzero__(self): return self.Ok() }

    %extend {
        bool __eq__(const wxBitmap* other) { return other ? (*self == *other) : false; }
        bool __ne__(const wxBitmap* other) { return other ? (*self != *other) : true;  }
    }
};


//---------------------------------------------------------------------------

DocStr(wxMask,
"This class encapsulates a monochrome mask bitmap, where the masked
area is black and the unmasked area is white. When associated with a
bitmap and drawn in a device context, the unmasked area of the bitmap
will be drawn, and the masked area will not be drawn.

A mask may be associated with a `wx.Bitmap`. It is used in
`wx.DC.DrawBitmap` or `wx.DC.Blit` when the source device context is a
`wx.MemoryDC` with a `wx.Bitmap` selected into it that contains a
mask.", "");

MustHaveApp(wxMask);

class wxMask : public wxObject {
public:

    DocStr(wxMask,
           "Constructs a mask from a `wx.Bitmap` and a `wx.Colour` in that bitmap
that indicates the transparent portions of the mask.  In other words,
the pixels in ``bitmap`` that match ``colour`` will be the transparent
portions of the mask.  If no ``colour`` or an invalid ``colour`` is
passed then BLACK is used.

:see: `wx.Bitmap`, `wx.Colour`", "");
    
    %extend {
        wxMask(const wxBitmap& bitmap, const wxColour& colour = wxNullColour) {
            if ( !colour.Ok() )
                return new wxMask(bitmap, *wxBLACK);
            else
                return new wxMask(bitmap, colour);
        }
    }
    
    //~wxMask();
};

%pythoncode { MaskColour = wx._deprecated(Mask, "wx.MaskColour is deprecated, use `wx.Mask` instead.") }

//---------------------------------------------------------------------------
//---------------------------------------------------------------------------