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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at */
#ifndef __nsXPLookAndFeel
#define __nsXPLookAndFeel
#include "mozilla/LookAndFeel.h"
#include "mozilla/ServoStyleConsts.h"
#include "nsTArray.h"
class nsLookAndFeel;
struct nsLookAndFeelIntPref {
const char* name;
mozilla::LookAndFeel::IntID id;
bool isSet;
int32_t intVar;
struct nsLookAndFeelFloatPref {
const char* name;
mozilla::LookAndFeel::FloatID id;
bool isSet;
float floatVar;
#define CACHE_BLOCK(x) (uint32_t(x) >> 5)
#define CACHE_BIT(x) (1 << (uint32_t(x) & 31))
#define COLOR_CACHE_SIZE (CACHE_BLOCK(uint32_t(LookAndFeel::ColorID::End)) + 1)
#define IS_COLOR_CACHED(x) \
(CACHE_BIT(x) & nsXPLookAndFeel::sCachedColorBits[CACHE_BLOCK(x)])
#define CLEAR_COLOR_CACHE(x) \
nsXPLookAndFeel::sCachedColors[uint32_t(x)] = 0; \
nsXPLookAndFeel::sCachedColorBits[CACHE_BLOCK(x)] &= ~(CACHE_BIT(x));
#define CACHE_COLOR(x, y) \
nsXPLookAndFeel::sCachedColors[uint32_t(x)] = y; \
nsXPLookAndFeel::sCachedColorBits[CACHE_BLOCK(x)] |= CACHE_BIT(x);
class nsXPLookAndFeel : public mozilla::LookAndFeel {
virtual ~nsXPLookAndFeel();
static nsXPLookAndFeel* 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, bool aUseStandinsForNativeColors,
nscolor& aResult);
virtual nsresult GetIntImpl(IntID aID, int32_t& 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 char16_t GetPasswordCharacterImpl() { return char16_t('*'); }
virtual bool GetEchoPasswordImpl() { return false; }
virtual uint32_t GetPasswordMaskDelayImpl() { return 600; }
virtual LookAndFeelCache GetCacheImpl();
virtual void SetCacheImpl(const LookAndFeelCache& aCache) {}
virtual void NativeInit() = 0;
nsXPLookAndFeel() = default;
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(int32_t aIndex);
virtual nsresult NativeGetColor(ColorID aID, nscolor& aResult) = 0;
bool IsSpecialColor(ColorID aID, nscolor& aColor);
bool ColorIsNotCSSAccessible(ColorID aID);
nscolor GetStandinForNativeColor(ColorID aID);
void RecordTelemetry();
static void 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[][41];
static int32_t sCachedColors[size_t(LookAndFeel::ColorID::End)];
static int32_t sCachedColorBits[COLOR_CACHE_SIZE];
static nsXPLookAndFeel* sInstance;
static bool sShutdown;