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37 :
38 : #ifndef __nsXPLookAndFeel
39 : #define __nsXPLookAndFeel
40 :
41 : #include "mozilla/LookAndFeel.h"
42 :
43 : class nsLookAndFeel;
44 :
45 : struct nsLookAndFeelIntPref
46 : {
47 : const char* name;
48 : mozilla::LookAndFeel::IntID id;
49 : bool isSet;
50 : PRInt32 intVar;
51 : };
52 :
53 : struct nsLookAndFeelFloatPref
54 : {
55 : const char* name;
56 : mozilla::LookAndFeel::FloatID id;
57 : bool isSet;
58 : float floatVar;
59 : };
60 :
61 : #define CACHE_BLOCK(x) ((x) >> 5)
62 : #define CACHE_BIT(x) (1 << ((x) & 31))
63 :
64 : #define COLOR_CACHE_SIZE (CACHE_BLOCK(LookAndFeel::eColorID_LAST_COLOR) + 1)
65 : #define IS_COLOR_CACHED(x) (CACHE_BIT(x) & nsXPLookAndFeel::sCachedColorBits[CACHE_BLOCK(x)])
66 : #define CLEAR_COLOR_CACHE(x) nsXPLookAndFeel::sCachedColors[(x)] =0; \
67 : nsXPLookAndFeel::sCachedColorBits[CACHE_BLOCK(x)] &= ~(CACHE_BIT(x));
68 : #define CACHE_COLOR(x, y) nsXPLookAndFeel::sCachedColors[(x)] = y; \
69 : nsXPLookAndFeel::sCachedColorBits[CACHE_BLOCK(x)] |= CACHE_BIT(x);
70 :
71 : class nsXPLookAndFeel: public mozilla::LookAndFeel
72 : {
73 : public:
74 : virtual ~nsXPLookAndFeel();
75 :
76 : static nsLookAndFeel* GetInstance();
77 : static void Shutdown();
78 :
79 : void Init();
80 :
81 : //
82 : // All these routines will return NS_OK if they have a value,
83 : // in which case the nsLookAndFeel should use that value;
84 : // otherwise we'll return NS_ERROR_NOT_AVAILABLE, in which case, the
85 : // platform-specific nsLookAndFeel should use its own values instead.
86 : //
87 : nsresult GetColorImpl(ColorID aID, nscolor &aResult);
88 : virtual nsresult GetIntImpl(IntID aID, PRInt32 &aResult);
89 : virtual nsresult GetFloatImpl(FloatID aID, float &aResult);
90 :
91 : // This one is different: there are no override prefs (fixme?), so
92 : // there is no XP implementation, only per-system impls.
93 : virtual bool GetFontImpl(FontID aID, nsString& aName,
94 : gfxFontStyle& aStyle) = 0;
95 :
96 : virtual void RefreshImpl();
97 :
98 0 : virtual PRUnichar GetPasswordCharacterImpl()
99 : {
100 0 : return PRUnichar('*');
101 : }
102 :
103 0 : virtual bool GetEchoPasswordImpl()
104 : {
105 0 : return false;
106 : }
107 :
108 : protected:
109 : nsXPLookAndFeel();
110 :
111 : static void IntPrefChanged(nsLookAndFeelIntPref *data);
112 : static void FloatPrefChanged(nsLookAndFeelFloatPref *data);
113 : static void ColorPrefChanged(unsigned int index, const char *prefName);
114 : void InitFromPref(nsLookAndFeelIntPref* aPref);
115 : void InitFromPref(nsLookAndFeelFloatPref* aPref);
116 : void InitColorFromPref(PRInt32 aIndex);
117 : virtual nsresult NativeGetColor(ColorID aID, nscolor &aResult) = 0;
118 : bool IsSpecialColor(ColorID aID, nscolor &aColor);
119 :
120 : static int OnPrefChanged(const char* aPref, void* aClosure);
121 :
122 : static bool sInitialized;
123 : static nsLookAndFeelIntPref sIntPrefs[];
124 : static nsLookAndFeelFloatPref sFloatPrefs[];
125 : /* this length must not be shorter than the length of the longest string in the array
126 : * see nsXPLookAndFeel.cpp
127 : */
128 : static const char sColorPrefs[][38];
129 : static PRInt32 sCachedColors[LookAndFeel::eColorID_LAST_COLOR];
130 : static PRInt32 sCachedColorBits[COLOR_CACHE_SIZE];
131 : static bool sUseNativeColors;
132 :
133 : static nsLookAndFeel* sInstance;
134 : static bool sShutdown;
135 : };
136 :
137 : #endif
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