gecko-dev/widget/xpwidgets/nsXPLookAndFeel.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
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* decision by deleting the provisions above and replace them with the notice
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* the provisions above, a recipient may use your version of this file under
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*
* ***** END LICENSE BLOCK ***** */
#ifndef __nsXPLookAndFeel
#define __nsXPLookAndFeel
#include "mozilla/LookAndFeel.h"
class nsLookAndFeel;
struct nsLookAndFeelIntPref
{
const char* name;
mozilla::LookAndFeel::IntID id;
bool isSet;
PRInt32 intVar;
};
struct nsLookAndFeelFloatPref
{
const char* name;
mozilla::LookAndFeel::FloatID id;
bool isSet;
float floatVar;
};
#define CACHE_BLOCK(x) ((x) >> 5)
#define CACHE_BIT(x) (1 << ((x) & 31))
#define COLOR_CACHE_SIZE (CACHE_BLOCK(LookAndFeel::eColorID_LAST_COLOR) + 1)
#define IS_COLOR_CACHED(x) (CACHE_BIT(x) & nsXPLookAndFeel::sCachedColorBits[CACHE_BLOCK(x)])
#define CLEAR_COLOR_CACHE(x) nsXPLookAndFeel::sCachedColors[(x)] =0; \
nsXPLookAndFeel::sCachedColorBits[CACHE_BLOCK(x)] &= ~(CACHE_BIT(x));
#define CACHE_COLOR(x, y) nsXPLookAndFeel::sCachedColors[(x)] = y; \
nsXPLookAndFeel::sCachedColorBits[CACHE_BLOCK(x)] |= CACHE_BIT(x);
class nsXPLookAndFeel: public mozilla::LookAndFeel
{
public:
virtual ~nsXPLookAndFeel();
static nsLookAndFeel* GetInstance();
static void Shutdown();
void Init();
//
// All these routines will return NS_OK if they have a value,
// in which case the nsLookAndFeel should use that value;
// otherwise we'll return NS_ERROR_NOT_AVAILABLE, in which case, the
// platform-specific nsLookAndFeel should use its own values instead.
//
nsresult GetColorImpl(ColorID aID, nscolor &aResult);
virtual nsresult GetIntImpl(IntID aID, PRInt32 &aResult);
virtual nsresult GetFloatImpl(FloatID aID, float &aResult);
// This one is different: there are no override prefs (fixme?), so
// there is no XP implementation, only per-system impls.
virtual bool GetFontImpl(FontID aID, nsString& aName,
gfxFontStyle& aStyle) = 0;
virtual void RefreshImpl();
virtual PRUnichar GetPasswordCharacterImpl()
{
return PRUnichar('*');
}
virtual bool GetEchoPasswordImpl()
{
return false;
}
protected:
nsXPLookAndFeel();
static void IntPrefChanged(nsLookAndFeelIntPref *data);
static void FloatPrefChanged(nsLookAndFeelFloatPref *data);
static void ColorPrefChanged(unsigned int index, const char *prefName);
void InitFromPref(nsLookAndFeelIntPref* aPref);
void InitFromPref(nsLookAndFeelFloatPref* aPref);
void InitColorFromPref(PRInt32 aIndex);
virtual nsresult NativeGetColor(ColorID aID, nscolor &aResult) = 0;
bool IsSpecialColor(ColorID aID, nscolor &aColor);
static int OnPrefChanged(const char* aPref, void* aClosure);
static bool sInitialized;
static nsLookAndFeelIntPref sIntPrefs[];
static nsLookAndFeelFloatPref sFloatPrefs[];
/* this length must not be shorter than the length of the longest string in the array
* see nsXPLookAndFeel.cpp
*/
static const char sColorPrefs[][38];
static PRInt32 sCachedColors[LookAndFeel::eColorID_LAST_COLOR];
static PRInt32 sCachedColorBits[COLOR_CACHE_SIZE];
static bool sUseNativeColors;
static nsLookAndFeel* sInstance;
static bool sShutdown;
};
#endif