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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/. */
+
+#ifndef __LookAndFeel
+#define __LookAndFeel
+
+#ifndef MOZILLA_INTERNAL_API
+#error "This header is only usable from within libxul (MOZILLA_INTERNAL_API)."
+#endif
+
+#include "nsDebug.h"
+#include "nsColor.h"
+#include "nsTArray.h"
+
+struct gfxFontStyle;
+
+struct LookAndFeelInt
+{
+ int32_t id;
+ int32_t value;
+};
+
+namespace mozilla {
+
+class LookAndFeel
+{
+public:
+ // When modifying this list, also modify nsXPLookAndFeel::sColorPrefs
+ // in widget/xpwidgts/nsXPLookAndFeel.cpp.
+ enum ColorID : uint8_t {
+
+ // WARNING : NO NEGATIVE VALUE IN THIS ENUMERATION
+ // see patch in bug 57757 for more information
+
+ eColorID_WindowBackground,
+ eColorID_WindowForeground,
+ eColorID_WidgetBackground,
+ eColorID_WidgetForeground,
+ eColorID_WidgetSelectBackground,
+ eColorID_WidgetSelectForeground,
+ eColorID_Widget3DHighlight,
+ eColorID_Widget3DShadow,
+ eColorID_TextBackground,
+ eColorID_TextForeground,
+ eColorID_TextSelectBackground,
+ eColorID_TextSelectForeground,
+ eColorID_TextSelectForegroundCustom,
+ eColorID_TextSelectBackgroundDisabled,
+ eColorID_TextSelectBackgroundAttention,
+ eColorID_TextHighlightBackground,
+ eColorID_TextHighlightForeground,
+
+ eColorID_IMERawInputBackground,
+ eColorID_IMERawInputForeground,
+ eColorID_IMERawInputUnderline,
+ eColorID_IMESelectedRawTextBackground,
+ eColorID_IMESelectedRawTextForeground,
+ eColorID_IMESelectedRawTextUnderline,
+ eColorID_IMEConvertedTextBackground,
+ eColorID_IMEConvertedTextForeground,
+ eColorID_IMEConvertedTextUnderline,
+ eColorID_IMESelectedConvertedTextBackground,
+ eColorID_IMESelectedConvertedTextForeground,
+ eColorID_IMESelectedConvertedTextUnderline,
+
+ eColorID_SpellCheckerUnderline,
+
+ // New CSS 2 color definitions
+ eColorID_activeborder,
+ eColorID_activecaption,
+ eColorID_appworkspace,
+ eColorID_background,
+ eColorID_buttonface,
+ eColorID_buttonhighlight,
+ eColorID_buttonshadow,
+ eColorID_buttontext,
+ eColorID_captiontext,
+ eColorID_graytext,
+ eColorID_highlight,
+ eColorID_highlighttext,
+ eColorID_inactiveborder,
+ eColorID_inactivecaption,
+ eColorID_inactivecaptiontext,
+ eColorID_infobackground,
+ eColorID_infotext,
+ eColorID_menu,
+ eColorID_menutext,
+ eColorID_scrollbar,
+ eColorID_threeddarkshadow,
+ eColorID_threedface,
+ eColorID_threedhighlight,
+ eColorID_threedlightshadow,
+ eColorID_threedshadow,
+ eColorID_window,
+ eColorID_windowframe,
+ eColorID_windowtext,
+
+ eColorID__moz_buttondefault,
+ // Colors which will hopefully become CSS3
+ eColorID__moz_field,
+ eColorID__moz_fieldtext,
+ eColorID__moz_dialog,
+ eColorID__moz_dialogtext,
+ // used to highlight valid regions to drop something onto
+ eColorID__moz_dragtargetzone,
+
+ // used to cell text background, selected but not focus
+ eColorID__moz_cellhighlight,
+ // used to cell text, selected but not focus
+ eColorID__moz_cellhighlighttext,
+ // used to html select cell text background, selected but not focus
+ eColorID__moz_html_cellhighlight,
+ // used to html select cell text, selected but not focus
+ eColorID__moz_html_cellhighlighttext,
+ // used to button text background, when mouse is over
+ eColorID__moz_buttonhoverface,
+ // used to button text, when mouse is over
+ eColorID__moz_buttonhovertext,
+ // used to menu item background, when mouse is over
+ eColorID__moz_menuhover,
+ // used to menu item text, when mouse is over
+ eColorID__moz_menuhovertext,
+ // used to menu bar item text
+ eColorID__moz_menubartext,
+ // used to menu bar item text, when mouse is over
+ eColorID__moz_menubarhovertext,
+ // On platforms where these colors are the same as
+ // -moz-field, use -moz-fieldtext as foreground color
+ eColorID__moz_eventreerow,
+ eColorID__moz_oddtreerow,
+
+ // colors needed by the Mac OS X theme
+
+ // foreground color of :hover:active buttons
+ eColorID__moz_mac_buttonactivetext,
+ // background color of chrome toolbars in active windows
+ eColorID__moz_mac_chrome_active,
+ // background color of chrome toolbars in inactive windows
+ eColorID__moz_mac_chrome_inactive,
+ // foreground color of default buttons
+ eColorID__moz_mac_defaultbuttontext,
+ //ring around text fields and lists
+ eColorID__moz_mac_focusring,
+ //colour used when mouse is over a menu item
+ eColorID__moz_mac_menuselect,
+ //colour used to do shadows on menu items
+ eColorID__moz_mac_menushadow,
+ // color used to display text for disabled menu items
+ eColorID__moz_mac_menutextdisable,
+ //colour used to display text while mouse is over a menu item
+ eColorID__moz_mac_menutextselect,
+ // text color of disabled text on toolbars
+ eColorID__moz_mac_disabledtoolbartext,
+ //inactive light hightlight
+ eColorID__moz_mac_secondaryhighlight,
+
+ // vista rebars
+
+ // media rebar text
+ eColorID__moz_win_mediatext,
+ // communications rebar text
+ eColorID__moz_win_communicationstext,
+
+ // Hyperlink color extracted from the system, not affected by the
+ // browser.anchor_color user pref.
+ // There is no OS-specified safe background color for this text,
+ // but it is used regularly within Windows and the Gnome DE on Dialog and
+ // Window colors.
+ eColorID__moz_nativehyperlinktext,
+
+ // Combo box widgets
+ eColorID__moz_comboboxtext,
+ eColorID__moz_combobox,
+
+ // GtkInfoBar
+ eColorID__moz_gtk_info_bar_text,
+
+ // keep this one last, please
+ eColorID_LAST_COLOR
+ };
+
+ // When modifying this list, also modify nsXPLookAndFeel::sIntPrefs
+ // in widget/xpwidgts/nsXPLookAndFeel.cpp.
+ enum IntID {
+ // default, may be overriden by OS
+ eIntID_CaretBlinkTime,
+ // pixel width of caret
+ eIntID_CaretWidth,
+ // show the caret when text is selected?
+ eIntID_ShowCaretDuringSelection,
+ // select textfields when focused via tab/accesskey?
+ eIntID_SelectTextfieldsOnKeyFocus,
+ // delay before submenus open
+ eIntID_SubmenuDelay,
+ // can popups overlap menu/task bar?
+ eIntID_MenusCanOverlapOSBar,
+ // should overlay scrollbars be used?
+ eIntID_UseOverlayScrollbars,
+ // allow H and V overlay scrollbars to overlap?
+ eIntID_AllowOverlayScrollbarsOverlap,
+ // show/hide scrollbars based on activity
+ eIntID_ShowHideScrollbars,
+ // skip navigating to disabled menu item?
+ eIntID_SkipNavigatingDisabledMenuItem,
+ // begin a drag if the mouse is moved further than the threshold while the
+ // button is down
+ eIntID_DragThresholdX,
+ eIntID_DragThresholdY,
+ // Accessibility theme being used?
+ eIntID_UseAccessibilityTheme,
+
+ // position of scroll arrows in a scrollbar
+ eIntID_ScrollArrowStyle,
+ // is scroll thumb proportional or fixed?
+ eIntID_ScrollSliderStyle,
+
+ // each button can take one of four values:
+ eIntID_ScrollButtonLeftMouseButtonAction,
+ // 0 - scrolls one line, 1 - scrolls one page
+ eIntID_ScrollButtonMiddleMouseButtonAction,
+ // 2 - scrolls to end, 3 - button ignored
+ eIntID_ScrollButtonRightMouseButtonAction,
+
+ // delay for opening spring loaded folders
+ eIntID_TreeOpenDelay,
+ // delay for closing spring loaded folders
+ eIntID_TreeCloseDelay,
+ // delay for triggering the tree scrolling
+ eIntID_TreeLazyScrollDelay,
+ // delay for scrolling the tree
+ eIntID_TreeScrollDelay,
+ // the maximum number of lines to be scrolled at ones
+ eIntID_TreeScrollLinesMax,
+ // What type of tab-order to use
+ eIntID_TabFocusModel,
+ // Should menu items blink when they're chosen?
+ eIntID_ChosenMenuItemsShouldBlink,
+
+ /*
+ * A Boolean value to determine whether the Windows default theme is
+ * being used.
+ *
+ * The value of this metric is not used on other platforms. These platforms
+ * should return NS_ERROR_NOT_IMPLEMENTED when queried for this metric.
+ */
+ eIntID_WindowsDefaultTheme,
+
+ /*
+ * A Boolean value to determine whether the DWM compositor is being used
+ *
+ * This metric is not used on non-Windows platforms. These platforms
+ * should return NS_ERROR_NOT_IMPLEMENTED when queried for this metric.
+ */
+ eIntID_DWMCompositor,
+
+ /*
+ * A Boolean value to determine whether Windows is themed (Classic vs.
+ * uxtheme)
+ *
+ * This is Windows-specific and is not implemented on other platforms
+ * (will return the default of NS_ERROR_FAILURE).
+ */
+ eIntID_WindowsClassic,
+
+ /*
+ * A Boolean value to determine whether the current Windows desktop theme
+ * supports Aero Glass.
+ *
+ * This is Windows-specific and is not implemented on other platforms
+ * (will return the default of NS_ERROR_FAILURE).
+ */
+ eIntID_WindowsGlass,
+
+ /*
+ * A Boolean value to determine whether the device is a touch enabled
+ * device. Currently this is only supported by the Windows 7 Touch API.
+ *
+ * Platforms that do not support this metric should return
+ * NS_ERROR_NOT_IMPLEMENTED when queried for this metric.
+ */
+ eIntID_TouchEnabled,
+
+ /*
+ * A Boolean value to determine whether the Mac graphite theme is
+ * being used.
+ *
+ * The value of this metric is not used on other platforms. These platforms
+ * should return NS_ERROR_NOT_IMPLEMENTED when queried for this metric.
+ */
+ eIntID_MacGraphiteTheme,
+
+ /*
+ * A Boolean value to determine whether the Mac OS X Yosemite-specific theming
+ * should be used.
+ *
+ * The value of this metric is not used on non-Mac platforms. These
+ * platforms should return NS_ERROR_NOT_IMPLEMENTED when queried for this
+ * metric.
+ */
+ eIntID_MacYosemiteTheme,
+
+ /*
+ * eIntID_AlertNotificationOrigin indicates from which corner of the
+ * screen alerts slide in, and from which direction (horizontal/vertical).
+ * 0, the default, represents bottom right, sliding vertically.
+ * Use any bitwise combination of the following constants:
+ * NS_ALERT_HORIZONTAL (1), NS_ALERT_LEFT (2), NS_ALERT_TOP (4).
+ *
+ * 6 4
+ * +-----------+
+ * 7| |5
+ * | |
+ * 3| |1
+ * +-----------+
+ * 2 0
+ */
+ eIntID_AlertNotificationOrigin,
+
+ /**
+ * If true, clicking on a scrollbar (not as in dragging the thumb) defaults
+ * to scrolling the view corresponding to the clicked point. Otherwise, we
+ * only do so if the scrollbar is clicked using the middle mouse button or
+ * if shift is pressed when the scrollbar is clicked.
+ */
+ eIntID_ScrollToClick,
+
+ /**
+ * IME and spell checker underline styles, the values should be
+ * NS_DECORATION_LINE_STYLE_*. They are defined below.
+ */
+ eIntID_IMERawInputUnderlineStyle,
+ eIntID_IMESelectedRawTextUnderlineStyle,
+ eIntID_IMEConvertedTextUnderlineStyle,
+ eIntID_IMESelectedConvertedTextUnderline,
+ eIntID_SpellCheckerUnderlineStyle,
+
+ /**
+ * If this metric != 0, support window dragging on the menubar.
+ */
+ eIntID_MenuBarDrag,
+ /**
+ * Return the appropriate WindowsThemeIdentifier for the current theme.
+ */
+ eIntID_WindowsThemeIdentifier,
+ /**
+ * Return an appropriate os version identifier.
+ */
+ eIntID_OperatingSystemVersionIdentifier,
+ /**
+ * 0: scrollbar button repeats to scroll only when cursor is on the button.
+ * 1: scrollbar button repeats to scroll even if cursor is outside of it.
+ */
+ eIntID_ScrollbarButtonAutoRepeatBehavior,
+ /**
+ * Delay before showing a tooltip.
+ */
+ eIntID_TooltipDelay,
+ /*
+ * A Boolean value to determine whether Mac OS X Lion style swipe animations
+ * should be used.
+ */
+ eIntID_SwipeAnimationEnabled,
+
+ /*
+ * A Boolean value to determine whether we have a color picker available
+ * for <input type="color"> to hook into.
+ *
+ * This lets us selectively enable the style for <input type="color">
+ * based on whether it's functional or not.
+ */
+ eIntID_ColorPickerAvailable,
+
+ /*
+ * A boolean value indicating whether or not the device has a hardware
+ * home button. Used on gaia to determine whether a home button
+ * is shown.
+ */
+ eIntID_PhysicalHomeButton,
+
+ /*
+ * Controls whether overlay scrollbars display when the user moves
+ * the mouse in a scrollable frame.
+ */
+ eIntID_ScrollbarDisplayOnMouseMove,
+
+ /*
+ * Overlay scrollbar animation constants.
+ */
+ eIntID_ScrollbarFadeBeginDelay,
+ eIntID_ScrollbarFadeDuration,
+
+ /**
+ * Distance in pixels to offset the context menu from the cursor
+ * on open.
+ */
+ eIntID_ContextMenuOffsetVertical,
+ eIntID_ContextMenuOffsetHorizontal
+ };
+
+ /**
+ * Windows themes we currently detect.
+ */
+ enum WindowsTheme {
+ eWindowsTheme_Generic = 0, // unrecognized theme
+ eWindowsTheme_Classic,
+ eWindowsTheme_Aero,
+ eWindowsTheme_LunaBlue,
+ eWindowsTheme_LunaOlive,
+ eWindowsTheme_LunaSilver,
+ eWindowsTheme_Royale,
+ eWindowsTheme_Zune,
+ eWindowsTheme_AeroLite
+ };
+
+ /**
+ * Operating system versions.
+ */
+ enum OperatingSystemVersion {
+ eOperatingSystemVersion_WindowsXP = 0,
+ eOperatingSystemVersion_WindowsVista,
+ eOperatingSystemVersion_Windows7,
+ eOperatingSystemVersion_Windows8,
+ eOperatingSystemVersion_Windows10,
+ eOperatingSystemVersion_Unknown
+ };
+
+ enum {
+ eScrollArrow_None = 0,
+ eScrollArrow_StartBackward = 0x1000,
+ eScrollArrow_StartForward = 0x0100,
+ eScrollArrow_EndBackward = 0x0010,
+ eScrollArrow_EndForward = 0x0001
+ };
+
+ enum {
+ // single arrow at each end
+ eScrollArrowStyle_Single =
+ eScrollArrow_StartBackward | eScrollArrow_EndForward,
+ // both arrows at bottom/right, none at top/left
+ eScrollArrowStyle_BothAtBottom =
+ eScrollArrow_EndBackward | eScrollArrow_EndForward,
+ // both arrows at both ends
+ eScrollArrowStyle_BothAtEachEnd =
+ eScrollArrow_EndBackward | eScrollArrow_EndForward |
+ eScrollArrow_StartBackward | eScrollArrow_StartForward,
+ // both arrows at top/left, none at bottom/right
+ eScrollArrowStyle_BothAtTop =
+ eScrollArrow_StartBackward | eScrollArrow_StartForward
+ };
+
+ enum {
+ eScrollThumbStyle_Normal,
+ eScrollThumbStyle_Proportional
+ };
+
+ // When modifying this list, also modify nsXPLookAndFeel::sFloatPrefs
+ // in widget/xpwidgts/nsXPLookAndFeel.cpp.
+ enum FloatID {
+ eFloatID_IMEUnderlineRelativeSize,
+ eFloatID_SpellCheckerUnderlineRelativeSize,
+
+ // The width/height ratio of the cursor. If used, the CaretWidth int metric
+ // should be added to the calculated caret width.
+ eFloatID_CaretAspectRatio
+ };
+
+ // These constants must be kept in 1:1 correspondence with the
+ // NS_STYLE_FONT_* system font constants.
+ enum FontID {
+ eFont_Caption = 1, // css2
+ eFont_Icon,
+ eFont_Menu,
+ eFont_MessageBox,
+ eFont_SmallCaption,
+ eFont_StatusBar,
+
+ eFont_Window, // css3
+ eFont_Document,
+ eFont_Workspace,
+ eFont_Desktop,
+ eFont_Info,
+ eFont_Dialog,
+ eFont_Button,
+ eFont_PullDownMenu,
+ eFont_List,
+ eFont_Field,
+
+ eFont_Tooltips, // moz
+ eFont_Widget
+ };
+
+ /**
+ * GetColor() return a native color value (might be overwritten by prefs) for
+ * aID. Some platforms don't return an error even if the index doesn't
+ * match any system colors. And also some platforms may initialize the
+ * return value even when it returns an error. Therefore, if you want to
+ * use a color for the default value, you should use the other GetColor()
+ * which returns nscolor directly.
+ *
+ * NOTE:
+ * eColorID_TextSelectForeground might return NS_DONT_CHANGE_COLOR.
+ * eColorID_IME* might return NS_TRANSPARENT, NS_SAME_AS_FOREGROUND_COLOR or
+ * NS_40PERCENT_FOREGROUND_COLOR.
+ * These values have particular meaning. Then, they are not an actual
+ * color value.
+ */
+ static nsresult GetColor(ColorID aID, nscolor* aResult);
+
+ /**
+ * This variant of GetColor() takes an extra Boolean parameter that allows
+ * the caller to ask that hard-coded color values be substituted for
+ * native colors (used when it is desireable to hide system colors to
+ * avoid system fingerprinting).
+ */
+ static nsresult GetColor(ColorID aID, bool aUseStandinsForNativeColors,
+ nscolor* aResult);
+
+ /**
+ * GetInt() and GetFloat() return a int or float value for aID. The result
+ * might be distance, time, some flags or a int value which has particular
+ * meaning. See each document at definition of each ID for the detail.
+ * The result is always 0 when they return error. Therefore, if you want to
+ * use a value for the default value, you should use the other method which
+ * returns int or float directly.
+ */
+ static nsresult GetInt(IntID aID, int32_t* aResult);
+ static nsresult GetFloat(FloatID aID, float* aResult);
+
+ static nscolor GetColor(ColorID aID, nscolor aDefault = NS_RGB(0, 0, 0))
+ {
+ nscolor result = NS_RGB(0, 0, 0);
+ if (NS_FAILED(GetColor(aID, &result))) {
+ return aDefault;
+ }
+ return result;
+ }
+
+ static int32_t GetInt(IntID aID, int32_t aDefault = 0)
+ {
+ int32_t result;
+ if (NS_FAILED(GetInt(aID, &result))) {
+ return aDefault;
+ }
+ return result;
+ }
+
+ static float GetFloat(FloatID aID, float aDefault = 0.0f)
+ {
+ float result;
+ if (NS_FAILED(GetFloat(aID, &result))) {
+ return aDefault;
+ }
+ return result;
+ }
+
+ /**
+ * Retrieve the name and style of a system-theme font. Returns true
+ * if the system theme specifies this font, false if a default should
+ * be used. In the latter case neither aName nor aStyle is modified.
+ *
+ * @param aID Which system-theme font is wanted.
+ * @param aName The name of the font to use.
+ * @param aStyle Styling to apply to the font.
+ * @param aDevPixPerCSSPixel Ratio of device pixels to CSS pixels
+ */
+ static bool GetFont(FontID aID, nsString& aName, gfxFontStyle& aStyle,
+ float aDevPixPerCSSPixel);
+
+ /**
+ * GetPasswordCharacter() returns a unicode character which should be used
+ * for a masked character in password editor. E.g., '*'.
+ */
+ static char16_t GetPasswordCharacter();
+
+ /**
+ * If the latest character in password field shouldn't be hidden by the
+ * result of GetPasswordCharacter(), GetEchoPassword() returns TRUE.
+ * Otherwise, FALSE.
+ */
+ static bool GetEchoPassword();
+
+ /**
+ * The millisecond to mask password value.
+ * This value is only valid when GetEchoPassword() returns true.
+ */
+ static uint32_t GetPasswordMaskDelay();
+
+ /**
+ * When system look and feel is changed, Refresh() must be called. Then,
+ * cached data would be released.
+ */
+ static void Refresh();
+
+ /**
+ * If the implementation is caching values, these accessors allow the
+ * cache to be exported and imported.
+ */
+ static nsTArray<LookAndFeelInt> GetIntCache();
+ static void SetIntCache(const nsTArray<LookAndFeelInt>& aLookAndFeelIntCache);
+};
+
+} // namespace mozilla
+
+// On the Mac, GetColor(eColorID_TextSelectForeground, color) returns this
+// constant to specify that the foreground color should not be changed
+// (ie. a colored text keeps its colors when selected).
+// Of course if other plaforms work like the Mac, they can use it too.
+#define NS_DONT_CHANGE_COLOR NS_RGB(0x01, 0x01, 0x01)
+
+// Similar with NS_DONT_CHANGE_COLOR, except NS_DONT_CHANGE_COLOR would returns
+// complementary color if fg color is same as bg color.
+// NS_CHANGE_COLOR_IF_SAME_AS_BG would returns eColorID_TextSelectForegroundCustom if
+// fg and bg color are the same.
+#define NS_CHANGE_COLOR_IF_SAME_AS_BG NS_RGB(0x02, 0x02, 0x02)
+
+// ---------------------------------------------------------------------
+// Special colors for eColorID_IME* and eColorID_SpellCheckerUnderline
+// ---------------------------------------------------------------------
+
+// For background color only.
+#define NS_TRANSPARENT NS_RGBA(0x01, 0x00, 0x00, 0x00)
+// For foreground color only.
+#define NS_SAME_AS_FOREGROUND_COLOR NS_RGBA(0x02, 0x00, 0x00, 0x00)
+#define NS_40PERCENT_FOREGROUND_COLOR NS_RGBA(0x03, 0x00, 0x00, 0x00)
+
+#define NS_IS_SELECTION_SPECIAL_COLOR(c) ((c) == NS_TRANSPARENT || \
+ (c) == NS_SAME_AS_FOREGROUND_COLOR || \
+ (c) == NS_40PERCENT_FOREGROUND_COLOR)
+
+// ------------------------------------------
+// Bits for eIntID_AlertNotificationOrigin
+// ------------------------------------------
+
+#define NS_ALERT_HORIZONTAL 1
+#define NS_ALERT_LEFT 2
+#define NS_ALERT_TOP 4
+
+#endif /* __LookAndFeel */
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