1 /////////////////////////////////////////////////////////////////////////////
3 // Purpose: interface of wxBrush
4 // Author: wxWidgets team
6 // Licence: wxWindows license
7 /////////////////////////////////////////////////////////////////////////////
10 The possible brush styles.
14 wxBRUSHSTYLE_SOLID
= wxSOLID
,
17 wxBRUSHSTYLE_TRANSPARENT
= wxTRANSPARENT
,
18 /**< Transparent (no fill). */
20 wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE
= wxSTIPPLE_MASK_OPAQUE
,
21 /**< @todo WHAT's THIS?? */
23 wxBRUSHSTYLE_STIPPLE_MASK
= wxSTIPPLE_MASK
,
24 /**< @todo WHAT's THIS?? */
26 wxBRUSHSTYLE_STIPPLE
= wxSTIPPLE
,
27 /**< Uses a bitmap as a stipple. */
29 wxBRUSHSTYLE_BDIAGONAL_HATCH
= wxBDIAGONAL_HATCH
,
30 /**< Backward diagonal hatch. */
32 wxBRUSHSTYLE_CROSSDIAG_HATCH
= wxCROSSDIAG_HATCH
,
33 /**< Cross-diagonal hatch. */
35 wxBRUSHSTYLE_FDIAGONAL_HATCH
= wxFDIAGONAL_HATCH
,
36 /**< Forward diagonal hatch. */
38 wxBRUSHSTYLE_CROSS_HATCH
= wxCROSS_HATCH
,
41 wxBRUSHSTYLE_HORIZONTAL_HATCH
= wxHORIZONTAL_HATCH
,
42 /**< Horizontal hatch. */
44 wxBRUSHSTYLE_VERTICAL_HATCH
= wxVERTICAL_HATCH
,
45 /**< Vertical hatch. */
47 wxBRUSHSTYLE_FIRST_HATCH
= wxFIRST_HATCH
,
48 wxBRUSHSTYLE_LAST_HATCH
= wxLAST_HATCH
,
58 A brush is a drawing tool for filling in areas. It is used for painting
59 the background of rectangles, ellipses, etc. It has a colour and a style.
61 On a monochrome display, wxWidgets shows all brushes as white unless the
62 colour is really black.
64 Do not initialize objects on the stack before the program commences, since
65 other required structures may not have been set up yet. Instead, define
66 global pointers to objects and create them in wxApp::OnInit or when required.
68 An application may wish to create brushes with different characteristics
69 dynamically, and there is the consequent danger that a large number of
70 duplicate brushes will be created. Therefore an application may wish to
71 get a pointer to a brush by using the global list of brushes ::wxTheBrushList,
72 and calling the member function wxBrushList::FindOrCreateBrush().
74 This class uses reference counting and copy-on-write internally so that
75 assignments between two instances of this class are very cheap.
76 You can therefore use actual objects instead of pointers without efficiency problems.
77 If an instance of this class is changed it will create its own data internally
78 so that other instances, which previously shared the data using the reference
79 counting, are not affected.
85 ::wxNullBrush, ::wxBLUE_BRUSH, ::wxGREEN_BRUSH, ::wxWHITE_BRUSH,
86 ::wxBLACK_BRUSH, ::wxGREY_BRUSH, ::wxMEDIUM_GREY_BRUSH, ::wxLIGHT_GREY_BRUSH,
87 ::wxTRANSPARENT_BRUSH, ::wxCYAN_BRUSH, ::wxRED_BRUSH
89 @see wxBrushList, wxDC, wxDC::SetBrush
91 class wxBrush
: public wxGDIObject
96 The brush will be uninitialised, and wxBrush:IsOk() will return @false.
101 Constructs a brush from a colour object and @a style.
106 One of the ::wxBrushStyle enumeration values.
108 wxBrush(const wxColour
& colour
, wxBrushStyle style
= wxSOLID
);
111 Constructs a brush from a colour name and @a style.
114 Colour name. The name will be looked up in the colour database.
116 One of the ::wxBrushStyle enumeration values.
118 @see wxColourDatabase
120 wxBrush(const wxString
& colourName
, wxBrushStyle style
);
123 Constructs a stippled brush using a bitmap.
124 The brush style will be set to wxBRUSHSTYLE_STIPPLE.
126 wxBrush(const wxBitmap
& stippleBitmap
);
129 Copy constructor, uses @ref overview_refcount "reference counting".
131 wxBrush(const wxBrush
& brush
);
136 See @ref overview_refcount_destruct for more info.
138 @remarks Although all remaining brushes are deleted when the application
139 exits, the application should try to clean up all brushes itself.
140 This is because wxWidgets cannot know if a pointer to the brush
141 object is stored in an application data structure, and there is
142 a risk of double deletion.
147 Returns a reference to the brush colour.
151 wxColour
GetColour() const;
154 Gets a pointer to the stipple bitmap. If the brush does not have a wxBRUSHSTYLE_STIPPLE
155 style, this bitmap may be non-@NULL but uninitialised (i.e. wxBitmap:IsOk() returns @false).
159 wxBitmap
* GetStipple() const;
162 Returns the brush style, one of the ::wxBrushStyle values.
164 @see SetStyle(), SetColour(), SetStipple()
166 wxBrushStyle
GetStyle() const;
169 Returns @true if the style of the brush is any of hatched fills.
173 bool IsHatch() const;
176 Returns @true if the brush is initialised. It will return @false if the default
177 constructor has been used (for example, the brush is a member of a class, or
178 @NULL has been assigned to it).
184 Sets the brush colour using red, green and blue values.
188 void SetColour(wxColour
& colour
);
189 void SetColour(const wxString
& colourName
);
190 void SetColour(unsigned char red
, unsigned char green
,
195 Sets the stipple bitmap.
198 The bitmap to use for stippling.
200 @remarks The style will be set to wxBRUSHSTYLE_STIPPLE, unless the bitmap
201 has a mask associated to it, in which case the style will be set
202 to wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE.
206 void SetStipple(const wxBitmap
& bitmap
);
209 Sets the brush style.
212 One of the ::wxBrushStyle values.
216 void SetStyle(wxBrushStyle style
);
220 See @ref overview_refcount_equality for more info.
222 bool operator !=(const wxBrush
& brush
);
225 Assignment operator, using @ref overview_refcount "reference counting".
227 wxBrush
operator =(const wxBrush
& brush
);
231 See @ref overview_refcount_equality for more info.
233 bool operator ==(const wxBrush
& brush
);
244 wxBrush
* wxBLUE_BRUSH
;
249 wxBrush
* wxGREEN_BRUSH
;
254 wxBrush
* wxWHITE_BRUSH
;
259 wxBrush
* wxBLACK_BRUSH
;
264 wxBrush
* wxGREY_BRUSH
;
269 wxBrush
* wxMEDIUM_GREY_BRUSH
;
274 wxBrush
* wxLIGHT_GREY_BRUSH
;
279 wxBrush
* wxTRANSPARENT_BRUSH
;
284 wxBrush
* wxCYAN_BRUSH
;
289 wxBrush
* wxRED_BRUSH
;
297 A brush list is a list containing all brushes which have been created.
304 class wxBrushList
: public wxList
308 Constructor. The application should not construct its own brush list:
309 use the object pointer ::wxTheBrushList.
314 Finds a brush with the specified attributes and returns it, else creates a new
315 brush, adds it to the brush list, and returns it.
320 Brush style. See ::wxBrushStyle for a list of styles.
322 wxBrush
* FindOrCreateBrush(const wxColour
& colour
,
323 wxBrushStyle style
= wxBRUSHSTYLE_SOLID
);
327 The global wxBrushList instance.
329 wxBrushList
* wxTheBrushList
;