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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: src/common/colourcmn.cpp | |
3 | // Purpose: wxColourBase implementation | |
4 | // Author: Francesco Montorsi | |
5 | // Modified by: | |
6 | // Created: 20/4/2006 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Francesco Montorsi | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | ||
13 | // For compilers that support precompilation, includes "wx.h". | |
14 | #include "wx/wxprec.h" | |
15 | ||
16 | #ifdef __BORLANDC__ | |
17 | #pragma hdrstop | |
18 | #endif | |
19 | ||
20 | #include "wx/colour.h" | |
21 | ||
e4db172a WS |
22 | #ifndef WX_PRECOMP |
23 | #include "wx/log.h" | |
7270921d | 24 | #include "wx/utils.h" |
dd05139a | 25 | #include "wx/gdicmn.h" |
193d0c93 | 26 | #include "wx/wxcrtvararg.h" |
e4db172a | 27 | #endif |
6b5d2431 | 28 | |
6f5d7825 RR |
29 | #if wxUSE_VARIANT |
30 | IMPLEMENT_VARIANT_OBJECT_EXPORTED(wxColour,WXDLLEXPORT) | |
31 | #endif | |
40989e46 WS |
32 | |
33 | // ============================================================================ | |
34 | // wxString <-> wxColour conversions | |
35 | // ============================================================================ | |
36 | ||
e86d4e59 | 37 | bool wxColourBase::FromString(const wxString& str) |
40989e46 | 38 | { |
e86d4e59 | 39 | if ( str.empty() ) |
40989e46 WS |
40 | return false; // invalid or empty string |
41 | ||
b534968d | 42 | if ( wxStrnicmp(str, wxT("RGB"), 3) == 0 ) |
40989e46 | 43 | { |
7270921d | 44 | // CSS-like RGB specification |
b534968d | 45 | // according to http://www.w3.org/TR/css3-color/#colorunits |
7270921d | 46 | // values outside 0-255 range are allowed but should be clipped |
b534968d VZ |
47 | int red, green, blue, |
48 | alpha = wxALPHA_OPAQUE; | |
49 | if ( str.length() > 3 && (str[3] == wxT('a') || str[3] == wxT('A')) ) | |
50 | { | |
51 | float a; | |
52 | // TODO: use locale-independent function | |
53 | if ( wxSscanf(str.wx_str() + 4, wxT("( %d , %d , %d , %f )"), | |
54 | &red, &green, &blue, &a) != 4 ) | |
55 | return false; | |
56 | ||
57 | alpha = wxRound(a * 255); | |
58 | } | |
59 | else // no 'a' following "rgb" | |
60 | { | |
61 | if ( wxSscanf(str.wx_str() + 3, wxT("( %d , %d , %d )"), | |
62 | &red, &green, &blue) != 3 ) | |
63 | return false; | |
64 | } | |
65 | ||
66 | Set((unsigned char)wxClip(red, 0, 255), | |
67 | (unsigned char)wxClip(green, 0, 255), | |
68 | (unsigned char)wxClip(blue, 0, 255), | |
69 | (unsigned char)wxClip(alpha, 0, 255)); | |
40989e46 WS |
70 | } |
71 | else if ( str[0] == wxT('#') && wxStrlen(str) == 7 ) | |
72 | { | |
73 | // hexadecimal prefixed with # (HTML syntax) | |
74 | unsigned long tmp; | |
52de37c7 | 75 | if (wxSscanf(str.wx_str() + 1, wxT("%lx"), &tmp) != 1) |
40989e46 WS |
76 | return false; |
77 | ||
04407723 PC |
78 | Set((unsigned char)(tmp >> 16), |
79 | (unsigned char)(tmp >> 8), | |
80 | (unsigned char)tmp); | |
40989e46 WS |
81 | } |
82 | else if (wxTheColourDatabase) // a colour name ? | |
83 | { | |
84 | // we can't do | |
85 | // *this = wxTheColourDatabase->Find(str) | |
86 | // because this place can be called from constructor | |
87 | // and 'this' could not be available yet | |
88 | wxColour clr = wxTheColourDatabase->Find(str); | |
81853b98 WS |
89 | if (clr.Ok()) |
90 | Set((unsigned char)clr.Red(), | |
91 | (unsigned char)clr.Green(), | |
92 | (unsigned char)clr.Blue()); | |
40989e46 WS |
93 | } |
94 | ||
95 | if (Ok()) | |
96 | return true; | |
97 | ||
98 | wxLogDebug(wxT("wxColour::Set - couldn't set to colour string '%s'"), str); | |
99 | return false; | |
100 | } | |
101 | ||
102 | wxString wxColourBase::GetAsString(long flags) const | |
103 | { | |
104 | wxString colName; | |
105 | ||
b534968d | 106 | const bool isOpaque = Alpha() == wxALPHA_OPAQUE; |
40989e46 | 107 | |
b534968d VZ |
108 | // we can't use the name format if the colour is not opaque as the alpha |
109 | // information would be lost | |
110 | if ( (flags & wxC2S_NAME) && isOpaque ) | |
40989e46 | 111 | { |
b534968d | 112 | colName = wxTheColourDatabase->FindName( |
5c33522f | 113 | static_cast<const wxColour &>(*this)).MakeLower(); |
40989e46 | 114 | } |
b534968d VZ |
115 | |
116 | if ( colName.empty() ) | |
40989e46 | 117 | { |
b534968d VZ |
118 | const int red = Red(), |
119 | blue = Blue(), | |
120 | green = Green(); | |
121 | ||
122 | if ( flags & wxC2S_CSS_SYNTAX ) | |
123 | { | |
124 | // no name for this colour; return it in CSS syntax | |
125 | if ( isOpaque ) | |
126 | { | |
127 | colName.Printf(wxT("rgb(%d, %d, %d)"), red, green, blue); | |
128 | } | |
129 | else // use rgba() form | |
130 | { | |
131 | // TODO: use locale-independent function | |
132 | colName.Printf(wxT("rgba(%d, %d, %d, %.3f)"), | |
133 | red, green, blue, Alpha() / 255.); | |
134 | } | |
135 | } | |
136 | else if ( flags & wxC2S_HTML_SYNTAX ) | |
137 | { | |
138 | wxASSERT_MSG( isOpaque, "alpha is lost in HTML syntax" ); | |
139 | ||
140 | // no name for this colour; return it in HTML syntax | |
141 | colName.Printf(wxT("#%02X%02X%02X"), red, green, blue); | |
142 | } | |
40989e46 WS |
143 | } |
144 | ||
b534968d | 145 | // this function should alway returns a non-empty string |
40989e46 WS |
146 | wxASSERT_MSG(!colName.empty(), |
147 | wxT("Invalid wxColour -> wxString conversion flags")); | |
148 | ||
149 | return colName; | |
150 | } | |
151 | ||
7d01c54d WS |
152 | #if WXWIN_COMPATIBILITY_2_6 |
153 | ||
154 | // static | |
40989e46 WS |
155 | wxColour wxColourBase::CreateByName(const wxString& name) |
156 | { | |
157 | return wxColour(name); | |
158 | } | |
7d01c54d WS |
159 | |
160 | void wxColourBase::InitFromName(const wxString& col) | |
161 | { | |
162 | Set(col); | |
163 | } | |
164 | ||
165 | #endif // WXWIN_COMPATIBILITY_2_6 | |
8b51786f VZ |
166 | |
167 | // wxColour <-> wxString utilities, used by wxConfig | |
168 | wxString wxToString(const wxColourBase& col) | |
169 | { | |
170 | return col.IsOk() ? col.GetAsString(wxC2S_CSS_SYNTAX) | |
171 | : wxString(); | |
172 | } | |
173 | ||
174 | bool wxFromString(const wxString& str, wxColourBase *col) | |
175 | { | |
9a83f860 | 176 | wxCHECK_MSG( col, false, wxT("NULL output parameter") ); |
8b51786f VZ |
177 | |
178 | if ( str.empty() ) | |
179 | { | |
180 | *col = wxNullColour; | |
181 | return true; | |
182 | } | |
183 | ||
184 | return col->Set(str); | |
185 | } | |
186 | ||
187 |