+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#include "wx/string.h"
+#include "wx/gdicmn.h" // for wxBitmapType
+#include "wx/colour.h"
+#include "wx/image.h"
+
+class WXDLLIMPEXP_FWD_CORE wxBitmap;
+class WXDLLIMPEXP_FWD_CORE wxBitmapHandler;
+class WXDLLIMPEXP_FWD_CORE wxIcon;
+class WXDLLIMPEXP_FWD_CORE wxMask;
+class WXDLLIMPEXP_FWD_CORE wxPalette;
+
+// ----------------------------------------------------------------------------
+// wxVariant support
+// ----------------------------------------------------------------------------
+
+#if wxUSE_VARIANT
+#include "wx/variant.h"
+DECLARE_VARIANT_OBJECT_EXPORTED(wxBitmap,WXDLLIMPEXP_CORE)
+#endif
+
+// ----------------------------------------------------------------------------
+// wxMask represents the transparent area of the bitmap
+// ----------------------------------------------------------------------------
+
+// TODO: all implementation of wxMask, except the generic one,
+// do not derive from wxMaskBase,,, they should
+class WXDLLIMPEXP_CORE wxMaskBase : public wxObject
+{
+public:
+ // create the mask from bitmap pixels of the given colour
+ bool Create(const wxBitmap& bitmap, const wxColour& colour);
+
+#if wxUSE_PALETTE
+ // create the mask from bitmap pixels with the given palette index
+ bool Create(const wxBitmap& bitmap, int paletteIndex);
+#endif // wxUSE_PALETTE
+
+ // create the mask from the given mono bitmap
+ bool Create(const wxBitmap& bitmap);
+
+protected:
+ // this function is called from Create() to free the existing mask data
+ virtual void FreeData() = 0;
+
+ // these functions must be overridden to implement the corresponding public
+ // Create() methods, they shouldn't call FreeData() as it's already called
+ // by the public wrappers
+ virtual bool InitFromColour(const wxBitmap& bitmap,
+ const wxColour& colour) = 0;
+ virtual bool InitFromMonoBitmap(const wxBitmap& bitmap) = 0;
+};
+
+#if defined(__WXDFB__) || \
+ defined(__WXMAC__) || \
+ defined(__WXGTK__) || \
+ defined(__WXCOCOA__) || \
+ defined(__WXMOTIF__) || \
+ defined(__WXX11__)
+ #define wxUSE_BITMAP_BASE 1
+#else
+ #define wxUSE_BITMAP_BASE 0
+#endif
+
+// a more readable way to tell
+#define wxBITMAP_SCREEN_DEPTH (-1)
+
+
+// ----------------------------------------------------------------------------
+// wxBitmapHelpers: container for various bitmap methods common to all ports.
+// ----------------------------------------------------------------------------
+
+// Unfortunately, currently wxBitmap does not inherit from wxBitmapBase on all
+// platforms and this is not easy to fix. So we extract at least some common
+// methods into this class from which both wxBitmapBase (and hence wxBitmap on
+// all platforms where it does inherit from it) and wxBitmap in wxMSW and other
+// exceptional ports (only wxPM and old wxCocoa) inherit.
+class WXDLLIMPEXP_CORE wxBitmapHelpers
+{
+public:
+ // Create a new wxBitmap from the PNG data in the given buffer.
+ static wxBitmap NewFromPNGData(const void* data, size_t size);
+};
+
+
+// All ports except wxMSW and wxOS2 use wxBitmapHandler and wxBitmapBase as
+// base class for wxBitmapHandler; wxMSW and wxOS2 use wxGDIImageHandler as
+// base class since it allows some code reuse there.
+#if wxUSE_BITMAP_BASE
+
+// ----------------------------------------------------------------------------
+// wxBitmapHandler: class which knows how to create/load/save bitmaps in
+// different formats
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxBitmapHandler : public wxObject
+{
+public:
+ wxBitmapHandler() { m_type = wxBITMAP_TYPE_INVALID; }
+ virtual ~wxBitmapHandler() { }
+
+ // NOTE: the following functions should be pure virtuals, but they aren't
+ // because otherwise almost all ports would have to implement
+ // them as "return false"...
+
+ virtual bool Create(wxBitmap *WXUNUSED(bitmap), const void* WXUNUSED(data),
+ wxBitmapType WXUNUSED(type), int WXUNUSED(width), int WXUNUSED(height),
+ int WXUNUSED(depth) = 1)
+ { return false; }
+
+ virtual bool LoadFile(wxBitmap *WXUNUSED(bitmap), const wxString& WXUNUSED(name),
+ wxBitmapType WXUNUSED(type), int WXUNUSED(desiredWidth),
+ int WXUNUSED(desiredHeight))
+ { return false; }
+
+ virtual bool SaveFile(const wxBitmap *WXUNUSED(bitmap), const wxString& WXUNUSED(name),
+ wxBitmapType WXUNUSED(type), const wxPalette *WXUNUSED(palette) = NULL) const
+ { return false; }
+
+ void SetName(const wxString& name) { m_name = name; }
+ void SetExtension(const wxString& ext) { m_extension = ext; }
+ void SetType(wxBitmapType type) { m_type = type; }
+ const wxString& GetName() const { return m_name; }
+ const wxString& GetExtension() const { return m_extension; }
+ wxBitmapType GetType() const { return m_type; }
+
+private:
+ wxString m_name;
+ wxString m_extension;
+ wxBitmapType m_type;
+
+ DECLARE_ABSTRACT_CLASS(wxBitmapHandler)
+};
+
+// ----------------------------------------------------------------------------
+// wxBitmap: class which represents platform-dependent bitmap (unlike wxImage)
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxBitmapBase : public wxGDIObject,
+ public wxBitmapHelpers
+{
+public:
+ /*
+ Derived class must implement these:
+
+ wxBitmap();
+ wxBitmap(const wxBitmap& bmp);
+ wxBitmap(const char bits[], int width, int height, int depth = 1);
+ wxBitmap(int width, int height, int depth = wxBITMAP_SCREEN_DEPTH);
+ wxBitmap(const wxSize& sz, int depth = wxBITMAP_SCREEN_DEPTH);
+ wxBitmap(const char* const* bits);
+ wxBitmap(const wxString &filename, wxBitmapType type = wxBITMAP_TYPE_XPM);
+ wxBitmap(const wxImage& image, int depth = wxBITMAP_SCREEN_DEPTH);
+
+ static void InitStandardHandlers();
+ */
+
+ virtual bool Create(int width, int height, int depth = wxBITMAP_SCREEN_DEPTH) = 0;
+ virtual bool Create(const wxSize& sz, int depth = wxBITMAP_SCREEN_DEPTH) = 0;
+
+ virtual int GetHeight() const = 0;
+ virtual int GetWidth() const = 0;
+ virtual int GetDepth() const = 0;
+
+ wxSize GetSize() const
+ { return wxSize(GetWidth(), GetHeight()); }
+
+#if wxUSE_IMAGE
+ virtual wxImage ConvertToImage() const = 0;
+
+ // Convert to disabled (dimmed) bitmap.
+ wxBitmap ConvertToDisabled(unsigned char brightness = 255) const;
+#endif // wxUSE_IMAGE
+
+ virtual wxMask *GetMask() const = 0;
+ virtual void SetMask(wxMask *mask) = 0;
+
+ virtual wxBitmap GetSubBitmap(const wxRect& rect) const = 0;
+
+ virtual bool SaveFile(const wxString &name, wxBitmapType type,
+ const wxPalette *palette = NULL) const = 0;
+ virtual bool LoadFile(const wxString &name, wxBitmapType type) = 0;
+
+ /*
+ If raw bitmap access is supported (see wx/rawbmp.h), the following
+ methods should be implemented:
+
+ virtual bool GetRawData(wxRawBitmapData *data) = 0;
+ virtual void UngetRawData(wxRawBitmapData *data) = 0;
+ */
+
+#if wxUSE_PALETTE
+ virtual wxPalette *GetPalette() const = 0;
+ virtual void SetPalette(const wxPalette& palette) = 0;
+#endif // wxUSE_PALETTE
+
+ // copies the contents and mask of the given (colour) icon to the bitmap
+ virtual bool CopyFromIcon(const wxIcon& icon) = 0;
+
+ // implementation:
+ virtual void SetHeight(int height) = 0;
+ virtual void SetWidth(int width) = 0;
+ virtual void SetDepth(int depth) = 0;
+
+ // Format handling
+ static inline wxList& GetHandlers() { return sm_handlers; }
+ static void AddHandler(wxBitmapHandler *handler);
+ static void InsertHandler(wxBitmapHandler *handler);
+ static bool RemoveHandler(const wxString& name);
+ static wxBitmapHandler *FindHandler(const wxString& name);
+ static wxBitmapHandler *FindHandler(const wxString& extension, wxBitmapType bitmapType);
+ static wxBitmapHandler *FindHandler(wxBitmapType bitmapType);
+
+ //static void InitStandardHandlers();
+ // (wxBitmap must implement this one)
+
+ static void CleanUpHandlers();
+
+ // this method is only used by the generic implementation of wxMask
+ // currently but could be useful elsewhere in the future: it can be
+ // overridden to quantize the colour to correspond to bitmap colour depth
+ // if necessary; default implementation simply returns the colour as is
+ virtual wxColour QuantizeColour(const wxColour& colour) const
+ {
+ return colour;
+ }
+
+protected:
+ static wxList sm_handlers;
+
+ DECLARE_ABSTRACT_CLASS(wxBitmapBase)
+};
+
+#endif // wxUSE_BITMAP_BASE
+
+
+// the wxBITMAP_DEFAULT_TYPE constant defines the default argument value
+// for wxBitmap's ctor and wxBitmap::LoadFile() functions.
projects / wxWidgets.git / blobdiff