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[wxWidgets.git] / include / wx / bitmap.h
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1///////////////////////////////////////////////////////////////////////////////
2// Name: wx/bitmap.h
3// Purpose: wxBitmap class interface
4// Author: Vaclav Slavik
5// Modified by:
6// Created: 22.04.01
77ffb593 7// Copyright: (c) wxWidgets team
65571936 8// Licence: wxWindows licence
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9///////////////////////////////////////////////////////////////////////////////
10
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11#ifndef _WX_BITMAP_H_BASE_
12#define _WX_BITMAP_H_BASE_
c801d85f 13
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14// ----------------------------------------------------------------------------
15// headers
16// ----------------------------------------------------------------------------
17
1e6feb95 18#include "wx/string.h"
22bd9387 19#include "wx/gdicmn.h" // for wxBitmapType
acb53ea5 20#include "wx/colour.h"
ac04aa99 21#include "wx/image.h"
1e6feb95 22
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23class WXDLLIMPEXP_FWD_CORE wxBitmap;
24class WXDLLIMPEXP_FWD_CORE wxBitmapHandler;
25class WXDLLIMPEXP_FWD_CORE wxIcon;
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26class WXDLLIMPEXP_FWD_CORE wxMask;
27class WXDLLIMPEXP_FWD_CORE wxPalette;
a85ccd79 28class WXDLLIMPEXP_FWD_CORE wxDC;
1e6feb95 29
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30// ----------------------------------------------------------------------------
31// wxVariant support
32// ----------------------------------------------------------------------------
33
34#if wxUSE_VARIANT
35#include "wx/variant.h"
53a2db12 36DECLARE_VARIANT_OBJECT_EXPORTED(wxBitmap,WXDLLIMPEXP_CORE)
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37#endif
38
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39// ----------------------------------------------------------------------------
40// wxMask represents the transparent area of the bitmap
41// ----------------------------------------------------------------------------
42
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43// TODO: all implementation of wxMask, except the generic one,
44// do not derive from wxMaskBase,,, they should
53a2db12 45class WXDLLIMPEXP_CORE wxMaskBase : public wxObject
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46{
47public:
48 // create the mask from bitmap pixels of the given colour
49 bool Create(const wxBitmap& bitmap, const wxColour& colour);
50
51#if wxUSE_PALETTE
52 // create the mask from bitmap pixels with the given palette index
53 bool Create(const wxBitmap& bitmap, int paletteIndex);
54#endif // wxUSE_PALETTE
55
56 // create the mask from the given mono bitmap
57 bool Create(const wxBitmap& bitmap);
58
59protected:
60 // this function is called from Create() to free the existing mask data
61 virtual void FreeData() = 0;
62
63 // these functions must be overridden to implement the corresponding public
64 // Create() methods, they shouldn't call FreeData() as it's already called
65 // by the public wrappers
66 virtual bool InitFromColour(const wxBitmap& bitmap,
67 const wxColour& colour) = 0;
68 virtual bool InitFromMonoBitmap(const wxBitmap& bitmap) = 0;
69};
70
0e1f8ea4 71#if defined(__WXDFB__) || \
d22004c4 72 defined(__WXMAC__) || \
4611dd06 73 defined(__WXGTK__) || \
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74 defined(__WXCOCOA__) || \
75 defined(__WXMOTIF__) || \
76 defined(__WXX11__)
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77 #define wxUSE_BITMAP_BASE 1
78#else
79 #define wxUSE_BITMAP_BASE 0
80#endif
81
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82// a more readable way to tell
83#define wxBITMAP_SCREEN_DEPTH (-1)
84
85
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86// ----------------------------------------------------------------------------
87// wxBitmapHelpers: container for various bitmap methods common to all ports.
88// ----------------------------------------------------------------------------
89
90// Unfortunately, currently wxBitmap does not inherit from wxBitmapBase on all
91// platforms and this is not easy to fix. So we extract at least some common
c3f641cb 92// methods into this class from which both wxBitmapBase (and hence wxBitmap on
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93// all platforms where it does inherit from it) and wxBitmap in wxMSW and other
94// exceptional ports (only wxPM and old wxCocoa) inherit.
95class WXDLLIMPEXP_CORE wxBitmapHelpers
96{
97public:
98 // Create a new wxBitmap from the PNG data in the given buffer.
99 static wxBitmap NewFromPNGData(const void* data, size_t size);
100};
101
102
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103// All ports except wxMSW and wxOS2 use wxBitmapHandler and wxBitmapBase as
104// base class for wxBitmapHandler; wxMSW and wxOS2 use wxGDIImageHandler as
105// base class since it allows some code reuse there.
91885f46 106#if wxUSE_BITMAP_BASE
b496583b 107
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108// ----------------------------------------------------------------------------
109// wxBitmapHandler: class which knows how to create/load/save bitmaps in
110// different formats
111// ----------------------------------------------------------------------------
112
53a2db12 113class WXDLLIMPEXP_CORE wxBitmapHandler : public wxObject
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114{
115public:
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116 wxBitmapHandler() { m_type = wxBITMAP_TYPE_INVALID; }
117 virtual ~wxBitmapHandler() { }
118
119 // NOTE: the following functions should be pure virtuals, but they aren't
120 // because otherwise almost all ports would have to implement
121 // them as "return false"...
1e6feb95 122
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123 virtual bool Create(wxBitmap *WXUNUSED(bitmap), const void* WXUNUSED(data),
124 wxBitmapType WXUNUSED(type), int WXUNUSED(width), int WXUNUSED(height),
125 int WXUNUSED(depth) = 1)
126 { return false; }
127
128 virtual bool LoadFile(wxBitmap *WXUNUSED(bitmap), const wxString& WXUNUSED(name),
129 wxBitmapType WXUNUSED(type), int WXUNUSED(desiredWidth),
130 int WXUNUSED(desiredHeight))
131 { return false; }
132
133 virtual bool SaveFile(const wxBitmap *WXUNUSED(bitmap), const wxString& WXUNUSED(name),
134 wxBitmapType WXUNUSED(type), const wxPalette *WXUNUSED(palette) = NULL) const
135 { return false; }
1e6feb95 136
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137 void SetName(const wxString& name) { m_name = name; }
138 void SetExtension(const wxString& ext) { m_extension = ext; }
139 void SetType(wxBitmapType type) { m_type = type; }
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140 const wxString& GetName() const { return m_name; }
141 const wxString& GetExtension() const { return m_extension; }
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142 wxBitmapType GetType() const { return m_type; }
143
144private:
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145 wxString m_name;
146 wxString m_extension;
147 wxBitmapType m_type;
148
e86f2cc8 149 DECLARE_ABSTRACT_CLASS(wxBitmapHandler)
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150};
151
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152// ----------------------------------------------------------------------------
153// wxBitmap: class which represents platform-dependent bitmap (unlike wxImage)
154// ----------------------------------------------------------------------------
155
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156class WXDLLIMPEXP_CORE wxBitmapBase : public wxGDIObject,
157 public wxBitmapHelpers
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158{
159public:
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160 /*
161 Derived class must implement these:
162
163 wxBitmap();
e86f2cc8 164 wxBitmap(const wxBitmap& bmp);
1e6feb95 165 wxBitmap(const char bits[], int width, int height, int depth = 1);
e86f2cc8 166 wxBitmap(int width, int height, int depth = wxBITMAP_SCREEN_DEPTH);
732d8c74 167 wxBitmap(const wxSize& sz, int depth = wxBITMAP_SCREEN_DEPTH);
452418c4 168 wxBitmap(const char* const* bits);
1e6feb95 169 wxBitmap(const wxString &filename, wxBitmapType type = wxBITMAP_TYPE_XPM);
e86f2cc8 170 wxBitmap(const wxImage& image, int depth = wxBITMAP_SCREEN_DEPTH);
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171
172 static void InitStandardHandlers();
173 */
174
e86f2cc8 175 virtual bool Create(int width, int height, int depth = wxBITMAP_SCREEN_DEPTH) = 0;
732d8c74 176 virtual bool Create(const wxSize& sz, int depth = wxBITMAP_SCREEN_DEPTH) = 0;
a066916b 177 virtual bool CreateScaled(int w, int h, int d, double logicalScale)
b5ec0c78 178 { return Create(w*logicalScale,h*logicalScale,d); }
e86f2cc8 179
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180 virtual int GetHeight() const = 0;
181 virtual int GetWidth() const = 0;
182 virtual int GetDepth() const = 0;
183
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184 wxSize GetSize() const
185 { return wxSize(GetWidth(), GetHeight()); }
186
9afa58e3 187 // support for scaled bitmaps
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188 virtual double GetScaleFactor() const { return 1.0; }
189 virtual double GetScaledWidth() const { return GetWidth() / GetScaleFactor(); }
190 virtual double GetScaledHeight() const { return GetHeight() / GetScaleFactor(); }
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191 virtual wxSize GetScaledSize() const
192 { return wxSize(GetScaledWidth(), GetScaledHeight()); }
193
c0521644 194#if wxUSE_IMAGE
1e6feb95 195 virtual wxImage ConvertToImage() const = 0;
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196
197 // Convert to disabled (dimmed) bitmap.
198 wxBitmap ConvertToDisabled(unsigned char brightness = 255) const;
c0521644 199#endif // wxUSE_IMAGE
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200
201 virtual wxMask *GetMask() const = 0;
202 virtual void SetMask(wxMask *mask) = 0;
203
204 virtual wxBitmap GetSubBitmap(const wxRect& rect) const = 0;
205
206 virtual bool SaveFile(const wxString &name, wxBitmapType type,
d3b9f782 207 const wxPalette *palette = NULL) const = 0;
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208 virtual bool LoadFile(const wxString &name, wxBitmapType type) = 0;
209
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210 /*
211 If raw bitmap access is supported (see wx/rawbmp.h), the following
212 methods should be implemented:
213
214 virtual bool GetRawData(wxRawBitmapData *data) = 0;
215 virtual void UngetRawData(wxRawBitmapData *data) = 0;
216 */
217
218#if wxUSE_PALETTE
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219 virtual wxPalette *GetPalette() const = 0;
220 virtual void SetPalette(const wxPalette& palette) = 0;
f28e099e 221#endif // wxUSE_PALETTE
1e6feb95 222
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223 // copies the contents and mask of the given (colour) icon to the bitmap
224 virtual bool CopyFromIcon(const wxIcon& icon) = 0;
225
226 // implementation:
227 virtual void SetHeight(int height) = 0;
228 virtual void SetWidth(int width) = 0;
229 virtual void SetDepth(int depth) = 0;
230
231 // Format handling
232 static inline wxList& GetHandlers() { return sm_handlers; }
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233 static void AddHandler(wxBitmapHandler *handler);
234 static void InsertHandler(wxBitmapHandler *handler);
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235 static bool RemoveHandler(const wxString& name);
236 static wxBitmapHandler *FindHandler(const wxString& name);
237 static wxBitmapHandler *FindHandler(const wxString& extension, wxBitmapType bitmapType);
238 static wxBitmapHandler *FindHandler(wxBitmapType bitmapType);
239
240 //static void InitStandardHandlers();
241 // (wxBitmap must implement this one)
242
243 static void CleanUpHandlers();
244
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245 // this method is only used by the generic implementation of wxMask
246 // currently but could be useful elsewhere in the future: it can be
247 // overridden to quantize the colour to correspond to bitmap colour depth
248 // if necessary; default implementation simply returns the colour as is
249 virtual wxColour QuantizeColour(const wxColour& colour) const
250 {
251 return colour;
252 }
253
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254protected:
255 static wxList sm_handlers;
256
257 DECLARE_ABSTRACT_CLASS(wxBitmapBase)
258};
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259
260#endif // wxUSE_BITMAP_BASE
1e6feb95 261
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262
263// the wxBITMAP_DEFAULT_TYPE constant defines the default argument value
264// for wxBitmap's ctor and wxBitmap::LoadFile() functions.
bd362275 265#if defined(__WXMSW__)
cbea3ec6 266 #define wxBITMAP_DEFAULT_TYPE wxBITMAP_TYPE_BMP_RESOURCE
91885f46 267 #include "wx/msw/bitmap.h"
2049ba38 268#elif defined(__WXMOTIF__)
cbea3ec6 269 #define wxBITMAP_DEFAULT_TYPE wxBITMAP_TYPE_XPM
91885f46 270 #include "wx/x11/bitmap.h"
1be7a35c 271#elif defined(__WXGTK20__)
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272 #ifdef __WINDOWS__
273 #define wxBITMAP_DEFAULT_TYPE wxBITMAP_TYPE_BMP_RESOURCE
274 #else
275 #define wxBITMAP_DEFAULT_TYPE wxBITMAP_TYPE_XPM
276 #endif
91885f46 277 #include "wx/gtk/bitmap.h"
1be7a35c 278#elif defined(__WXGTK__)
cbea3ec6 279 #define wxBITMAP_DEFAULT_TYPE wxBITMAP_TYPE_XPM
91885f46 280 #include "wx/gtk1/bitmap.h"
83df96d6 281#elif defined(__WXX11__)
cbea3ec6 282 #define wxBITMAP_DEFAULT_TYPE wxBITMAP_TYPE_XPM
91885f46 283 #include "wx/x11/bitmap.h"
b3c86150 284#elif defined(__WXDFB__)
4ca8531f 285 #define wxBITMAP_DEFAULT_TYPE wxBITMAP_TYPE_BMP_RESOURCE
91885f46 286 #include "wx/dfb/bitmap.h"
34138703 287#elif defined(__WXMAC__)
cbea3ec6 288 #define wxBITMAP_DEFAULT_TYPE wxBITMAP_TYPE_PICT_RESOURCE
ef0e9220 289 #include "wx/osx/bitmap.h"
fed66a87 290#elif defined(__WXCOCOA__)
cbea3ec6 291 #define wxBITMAP_DEFAULT_TYPE wxBITMAP_TYPE_BMP_RESOURCE
91885f46 292 #include "wx/cocoa/bitmap.h"
1777b9bb 293#elif defined(__WXPM__)
cbea3ec6 294 #define wxBITMAP_DEFAULT_TYPE wxBITMAP_TYPE_BMP_RESOURCE
91885f46 295 #include "wx/os2/bitmap.h"
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296#endif
297
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298#if wxUSE_IMAGE
299inline
300wxBitmap
301#if wxUSE_BITMAP_BASE
302wxBitmapBase::
303#else
304wxBitmap::
305#endif
306ConvertToDisabled(unsigned char brightness) const
307{
308 return ConvertToImage().ConvertToDisabled(brightness);
309}
310#endif // wxUSE_IMAGE
311
87f83ac8 312// we must include generic mask.h after wxBitmap definition
0e1f8ea4 313#if defined(__WXDFB__)
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314 #define wxUSE_GENERIC_MASK 1
315#else
316 #define wxUSE_GENERIC_MASK 0
317#endif
318
319#if wxUSE_GENERIC_MASK
320 #include "wx/generic/mask.h"
321#endif
322
91885f46 323#endif // _WX_BITMAP_H_BASE_