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/* -*- Mode: C++; tab-width: 2; 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 http://mozilla.org/MPL/2.0/. */
// This defines a common base class for nsITheme implementations, to reduce
// code duplication.
#ifndef _NSNATIVETHEME_H_
#define _NSNATIVETHEME_H_
#include "nsAlgorithm.h"
#include "nsAtom.h"
#include "nsColor.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "nsMargin.h"
#include "nsGkAtoms.h"
#include "nsTArray.h"
#include "nsINamed.h"
#include "nsITimer.h"
#include "nsIContent.h"
class nsIFrame;
class nsPresContext;
namespace mozilla {
class ComputedStyle;
enum class StyleAppearance : uint8_t;
class EventStates;
} // namespace mozilla
class nsNativeTheme : public nsITimerCallback, public nsINamed {
protected:
virtual ~nsNativeTheme() = default;
NS_DECL_ISUPPORTS
NS_DECL_NSITIMERCALLBACK
NS_DECL_NSINAMED
enum ScrollbarButtonType {
eScrollbarButton_UpTop = 0,
eScrollbarButton_Down = 1 << 0,
eScrollbarButton_Bottom = 1 << 1
};
enum TreeSortDirection {
eTreeSortDirection_Descending,
eTreeSortDirection_Natural,
eTreeSortDirection_Ascending
};
nsNativeTheme();
// Returns the content state (hover, focus, etc), see EventStateManager.h
mozilla::EventStates GetContentState(nsIFrame* aFrame,
mozilla::StyleAppearance aAppearance);
// Returns whether the widget is already styled by content
// Normally called from ThemeSupportsWidget to turn off native theming
// for elements that are already styled.
bool IsWidgetStyled(nsPresContext* aPresContext, nsIFrame* aFrame,
mozilla::StyleAppearance aAppearance);
// Accessors to widget-specific state information
bool IsDisabled(nsIFrame* aFrame, mozilla::EventStates aEventStates);
// RTL chrome direction
static bool IsFrameRTL(nsIFrame* aFrame);
static bool IsHTMLContent(nsIFrame* aFrame);
// button:
bool IsDefaultButton(nsIFrame* aFrame) {
return CheckBooleanAttr(aFrame, nsGkAtoms::_default);
}
bool IsButtonTypeMenu(nsIFrame* aFrame);
// checkbox:
bool IsChecked(nsIFrame* aFrame) {
return GetCheckedOrSelected(aFrame, false);
}
// radiobutton:
bool IsSelected(nsIFrame* aFrame) {
return GetCheckedOrSelected(aFrame, true);
}
bool IsFocused(nsIFrame* aFrame) {
return CheckBooleanAttr(aFrame, nsGkAtoms::focused);
}
// scrollbar button:
int32_t GetScrollbarButtonType(nsIFrame* aFrame);
// tab:
bool IsSelectedTab(nsIFrame* aFrame) {
return CheckBooleanAttr(aFrame, nsGkAtoms::visuallyselected);
}
bool IsNextToSelectedTab(nsIFrame* aFrame, int32_t aOffset);
bool IsBeforeSelectedTab(nsIFrame* aFrame) {
return IsNextToSelectedTab(aFrame, -1);
}
bool IsAfterSelectedTab(nsIFrame* aFrame) {
return IsNextToSelectedTab(aFrame, 1);
}
bool IsLeftToSelectedTab(nsIFrame* aFrame) {
return IsFrameRTL(aFrame) ? IsAfterSelectedTab(aFrame)
: IsBeforeSelectedTab(aFrame);
}
bool IsRightToSelectedTab(nsIFrame* aFrame) {
return IsFrameRTL(aFrame) ? IsBeforeSelectedTab(aFrame)
: IsAfterSelectedTab(aFrame);
}
// button / toolbarbutton:
bool IsCheckedButton(nsIFrame* aFrame) {
return CheckBooleanAttr(aFrame, nsGkAtoms::checked);
}
bool IsSelectedButton(nsIFrame* aFrame) {
return CheckBooleanAttr(aFrame, nsGkAtoms::checked) ||
CheckBooleanAttr(aFrame, nsGkAtoms::selected);
}
bool IsOpenButton(nsIFrame* aFrame) {
return CheckBooleanAttr(aFrame, nsGkAtoms::open);
}
bool IsPressedButton(nsIFrame* aFrame);
// treeheadercell:
TreeSortDirection GetTreeSortDirection(nsIFrame* aFrame);
bool IsLastTreeHeaderCell(nsIFrame* aFrame);
// tab:
bool IsBottomTab(nsIFrame* aFrame);
bool IsFirstTab(nsIFrame* aFrame);
bool IsHorizontal(nsIFrame* aFrame);
// progressbar:
bool IsIndeterminateProgress(nsIFrame* aFrame,
mozilla::EventStates aEventStates);
bool IsVerticalProgress(nsIFrame* aFrame);
// meter:
bool IsVerticalMeter(nsIFrame* aFrame);
// textfield:
bool IsReadOnly(nsIFrame* aFrame) {
return CheckBooleanAttr(aFrame, nsGkAtoms::readonly);
}
// menupopup:
bool IsSubmenu(nsIFrame* aFrame, bool* aLeftOfParent);
// True if it's not a menubar item or menulist item
bool IsRegularMenuItem(nsIFrame* aFrame);
static bool CheckBooleanAttr(nsIFrame* aFrame, nsAtom* aAtom);
static int32_t CheckIntAttr(nsIFrame* aFrame, nsAtom* aAtom,
int32_t defaultValue);
// Helpers for progressbar.
static double GetProgressValue(nsIFrame* aFrame);
static double GetProgressMaxValue(nsIFrame* aFrame);
bool GetCheckedOrSelected(nsIFrame* aFrame, bool aCheckSelected);
bool GetIndeterminate(nsIFrame* aFrame);
bool QueueAnimatedContentForRefresh(nsIContent* aContent,
uint32_t aMinimumFrameRate);
nsIFrame* GetAdjacentSiblingFrameWithSameAppearance(nsIFrame* aFrame,
bool aNextSibling);
bool IsRangeHorizontal(nsIFrame* aFrame);
// scrollbar
static bool IsDarkBackground(nsIFrame* aFrame);
// custom scrollbar
typedef nscolor (*AutoColorGetter)(mozilla::ComputedStyle*);
bool IsWidgetScrollbarPart(mozilla::StyleAppearance aAppearance);
private:
uint32_t mAnimatedContentTimeout;
nsCOMPtr<nsITimer> mAnimatedContentTimer;
AutoTArray<nsCOMPtr<nsIContent>, 20> mAnimatedContentList;
};
#endif // _NSNATIVETHEME_H_