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/* This file is part of the KDE libraries
   Copyright (C) 2000 David Faure <faure@kde.org>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License version 2 as published by the Free Software Foundation.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/
#ifndef _TDEGLOBALSETTINGS_H
#define _TDEGLOBALSETTINGS_H

#include <tqstring.h>
#include <tqcolor.h>
#include <tqfont.h>
#include "tdelibs_export.h"

#define KDE_DEFAULT_SINGLECLICK false
#define KDE_DEFAULT_ICONTEXTROUNDED true
#define KDE_DEFAULT_INSERTTEAROFFHANDLES 0
#define KDE_DEFAULT_AUTOSELECTDELAY -1
#define KDE_DEFAULT_CHANGECURSOR true
#define KDE_DEFAULT_LARGE_CURSOR false
#define KDE_DEFAULT_VISUAL_ACTIVATE true
#define KDE_DEFAULT_VISUAL_ACTIVATE_SPEED 50
#define KDE_DEFAULT_WHEEL_ZOOM false
#define KDE_DEFAULT_ICON_ON_PUSHBUTTON true
#define KDE_DEFAULT_OPAQUE_RESIZE true
#define KDE_DEFAULT_BUTTON_LAYOUT 0
#define KDE_DEFAULT_SHADE_SORT_COLUMN true
#define KDE_DEFAULT_KONQ_ACTIVATION_EFFECT true

class KURL;

/**
 * Access the KDE global configuration.
 *
 * @author David Faure <faure@kde.org>
 */
class TDECORE_EXPORT TDEGlobalSettings
{
  public:

    /**
     * Returns a threshold in pixels for drag & drop operations.
     * As long as the mouse movement has not exceeded this number
     * of pixels in either X or Y direction no drag operation may
     * be started. This prevents spurious drags when the user intended
     * to click on something but moved the mouse a bit while doing so.
     *
     * For this to work you must save the position of the mouse (oldPos)
     * in the TQWidget::mousePressEvent().
     * When the position of the mouse (newPos)
     * in a TQWidget::mouseMoveEvent() exceeds this threshold
     * you may start a drag
     * which should originate from oldPos.
     *
     * Example code:
     * \code
     * void KColorCells::mousePressEvent( TQMouseEvent *e )
     * {
     *    mOldPos = e->pos();
     * }
     *
     * void KColorCells::mouseMoveEvent( TQMouseEvent *e )
     * {
     *    if( !(e->state() && LeftButton)) return;
     *
     *    int delay = TDEGlobalSettings::dndEventDelay();
     *    TQPoint newPos = e->pos();
     *    if(newPos.x() > mOldPos.x()+delay || newPos.x() < mOldPos.x()-delay ||
     *       newPos.y() > mOldPos.y()+delay || newPos.y() < mOldPos.y()-delay)
     *    {
     *       // Drag color object
     *       int cell = posToCell(mOldPos); // Find color at mOldPos
     *       if ((cell != -1) && colors[cell].isValid())
     *       {
     *          KColorDrag *d = KColorDrag::makeDrag( colors[cell], this);
     *          d->dragCopy();
     *       }
     *    }
     * }
     * \endcode
     * @return the threshold for drag & drop in pixels
     */

    static int dndEventDelay();

    /**
     * Returns whether KDE runs in single (default) or double click
     * mode.
     * see http://developer.kde.org/documentation/standards/kde/style/mouse/index.html
     * @return true if single click mode, or false if double click mode.
     **/
    static bool singleClick();

    /**
     * Returns whether icon text is drawn in a rounded style
     * @return true if rounded, or false if rectangular.
     **/
    static bool iconUseRoundedRect();

    /**
     * This enum describes the return type for insertTearOffHandle() whether to insert
     * a handle or not. Applications who independently want to use handles in their popup menus
     * should test for Application level before calling the appropriate function in TDEPopupMenu.
     * @since 3.1
     **/
    enum TearOffHandle {
      Disable = 0, ///< disable tear-off handles
      ApplicationLevel, ///< enable on application level
      Enable ///< enable tear-off handles
    };

    /**
     * Returns whether tear-off handles are inserted in TDEPopupMenus.
     * @return whether tear-off handles are inserted in TDEPopupMenus.
     * @since 3.1
     **/
    static TearOffHandle insertTearOffHandle();

    /**
     * Checks whether the cursor changes over icons.
     * @return the KDE setting for "change cursor over icon"
     */
    static bool changeCursorOverIcon();

    /**
     * Checks whether to show feedback when in item (specifically an
     * icon) is activated.
     * @return whether to show some feedback when an item is activated.
     */
    static bool visualActivate();

    /**
     * Returns the speed of the visual activation feedback.
     * @return the speed of the visual activation feedback, between
     *         0 for minimum and 100 for maximum speed
     */
    static unsigned int visualActivateSpeed();

    /**
     * Returns the KDE setting for the auto-select option.
     *
     * @return the auto-select delay or -1 if auto-select is disabled.
     */
    static int autoSelectDelay();

    /**
     * Returns the KDE setting for the shortcut key to open
     * context menus.
     *
     * @return the key that pops up context menus.
     */
    static int contextMenuKey ();

    /**
     * Returns the KDE setting for context menus.
     *
     * @return whether context menus should be shown on button press
     * or button release (click).
     */
    static bool showContextMenusOnPress ();

    /**
     * This enum describes the completion mode used for by the TDECompletion class.
     * See <a href="http://developer.kde.org/documentation/standards/kde/style/keys/completion.html">
     * the styleguide</a>.
     **/
   enum Completion {
       /**
        * No completion is used.
        */
       CompletionNone=1,
       /**
        * Text is automatically filled in whenever possible.
        */
       CompletionAuto,
       /**
        * Same as automatic except shortest match is used for completion.
        */
       CompletionMan,
       /**
        * Complete text much in the same way as a typical *nix shell would.
        */
       CompletionShell,
       /**
        * Lists all possible matches in a popup list-box to choose from.
        */
       CompletionPopup,
       /**
        * Lists all possible matches in a popup list-box to choose from, and automatically
        * fill the result whenever possible.
        */
       CompletionPopupAuto
   };

    /**
     * Returns the preferred completion mode setting.
     *
     * @return Completion.  Default is @p CompletionPopup.
     */
    static Completion completionMode();

    /**
     * Describes the mouse settings.
     */
    struct KMouseSettings
    {
        enum { RightHanded = 0, LeftHanded = 1 };
        int handed; // left or right
    };

    /**
     * This returns the current mouse settings.
     * On Windows, settings are retrieved from the system.
     * @return the current mouse settings
     */
    static KMouseSettings & mouseSettings();

    /**
     * The path to the autostart directory of the current user.
     * @return the path of the autostart directory
     */
    static TQString autostartPath() { initPaths(); return *s_autostartPath; }

    /**
     * DEPRECATED (starting from kde-3.4).
     * This isn't where the trash contents is, anymore.
     * Use TDEIO::trash() to trash files, "trash:/" to list the trash contents.
     */
    static TQString trashPath() { initPaths(); return *s_trashPath; }
    // KDE4: if you want to remove the above, move it to kdesktop/init.cc, which needs
    // to know the old location of the trash

    /**
     * The path to the desktop directory of the current user.
     * @return the user's desktop directory
     */
    static TQString desktopPath() { initPaths(); return *s_desktopPath; }

    /**
     * The path where documents are stored of the current user.
     * @return the path of the document directory
     */
    static TQString documentPath() { initPaths(); return *s_documentPath; }

    /**
     * The path where documents are stored of the current user.
     * @return the path of the downloads directory
     */
    static TQString downloadPath() { initPaths(); return *s_downloadPath; }

    /**
     * The path where documents are stored of the current user.
     * @return the path of the music directory
     */
    static TQString musicPath() { initPaths(); return *s_musicPath; }

    /**
     * The path where documents are stored of the current user.
     * @return the path of the pictures directory
     */
    static TQString picturesPath() { initPaths(); return *s_picturesPath; }

    /**
     * The path of the public share of the current user.
     * @return the path of the public share directory
     */
    static TQString publicSharePath() { initPaths(); return *s_publicSharePath; }

    /**
     * The path where templates are stored of the current user.
     * @return the path of the templates directory
     */
    static TQString templatesPath() { initPaths(); return *s_templatesPath; }

    /**
     * The path where documents are stored of the current user.
     * @return the path of the videos directory
     */
    static TQString videosPath() { initPaths(); return *s_videosPath; }

    /**
     * The default color to use when highlighting toolbar buttons.
     * @return the toolbar highlight color
     */
    static TQColor toolBarHighlightColor();

    /**
     * The default color to use for inactive titles.
     * @return the inactive title color
     */
    static TQColor inactiveTitleColor();

    /**
     * The default color to use for inactive texts.
     * @return the inactive text color
     */
    static TQColor inactiveTextColor();

    /**
     * The default color to use for active titles.
     * @return the active title color
     */
    static TQColor activeTitleColor();

    /**
     * The default color to use for active texts.
     * @return the active text color
     */
    static TQColor activeTextColor();

    /**
     * Returns the contrast for borders.
     * @return the contrast (between 0 for minimum and 10 for maximum
     *         contrast)
     */
    static int contrast();

    /**
     * Returns the button background color
     * @return the button background color
     * @since 3.4
     */
    static TQColor buttonBackground();

    /**
     * Returns the button text color
     * @return the button text color
     * @since 3.4
     */
    static TQColor buttonTextColor();

    /**
     * Returns the default base (background) color.
     * @return the default base (background) color
     * @see TQColorGroup::base()
     */
    static TQColor baseColor();

    /**
     * Returns the default text color.
     * @return the default text color
     * @see TQColorGroup::text()
     */
    static TQColor textColor();

    /**
     * Returns the default link color.
     * @return the default link color
     */
    static TQColor linkColor();

    /**
     * Returns the default color for visited links.
     * @return the default color for visited links
     */
    static TQColor visitedLinkColor();

    /**
     * Returns the default color for highlighted text.
     * @return the default color for highlighted text
     * @see TQColorGroup::hightlightedText()
     */
    static TQColor highlightedTextColor();

    /**
     * Returns the default color for text highlights.
     * @return the default color for text highlights
     * @see TQColorGroup::hightlight()
     */
    static TQColor highlightColor();

    /**
     * Returns the alternate background color used by TDEListView with
     * TDEListViewItem. Any other list that uses alternating background
     * colors should use this too, to obey to the user's preferences. Returns
     * an invalid color if the user doesn't want alternating backgrounds.
     * @return the alternate background color
     * @see calculateAlternateBackgroundColor
     */
    static TQColor alternateBackgroundColor();

    /**
     * Calculates a color based on @p base to be used as alternating
     * color for e.g. listviews.
     * @param base the base for the calculation
     * @return the calculated color
     * @see alternateBackgroundColor
     */
    static TQColor calculateAlternateBackgroundColor(const TQColor& base);

    /**
      * Returns if the sorted column in a TDEListView shall be drawn with a
      * shaded background color.
      * @return true if the sorted column shall be shaded
      * @since 3.4
      */
    static bool shadeSortColumn();

    /**
     * Returns the default general font.
     * @return the default general font.
     */
    static TQFont generalFont();

    /**
     * Returns the default fixed font.
     * @return the default fixed font.
     */
    static TQFont fixedFont();

    /**
     * Returns the default toolbar font.
     * @return the default toolbar font.
     */
    static TQFont toolBarFont();

    /**
     * Returns the default menu font.
     * @return the default menu font.
     */
    static TQFont menuFont();

    /**
     * Returns the default window title font.
     * @return the default window title font.
     */
    static TQFont windowTitleFont();

    /**
     * Returns the default taskbar font.
     * @return the default taskbar font.
     */
    static TQFont taskbarFont();

    /**
     * Returns a font of approx. 48 pt. capable of showing @p text.
     * @param text the text to test
     * @return the font that is capable to show the text with 48 pt
     * @since 3.1
     */
    static TQFont largeFont(const TQString &text = TQString::null);

    /**
     * Returns if the user specified multihead. In case the display
     * has multiple screens, the return value of this function specifies
     * if the user wants KDE to run on all of them or just on the primary
     * On Windows, settings are retrieved from the system.
     * @return true if the user chose multi head
     */
    static bool isMultiHead();

    /**
     * Typically, TQScrollView derived classes can be scrolled fast by
     * holding down the Ctrl-button during wheel-scrolling.
     * But TQTextEdit and derived classes perform zooming instead of fast
     * scrolling.
     *
     * This value determines whether the user wants to zoom or scroll fast
     * with Ctrl-wheelscroll.
     * @return true if the user wishes to zoom with the mouse wheel,
     *         false for scrolling
     * @since 3.1
     */
    static bool wheelMouseZooms();

    /**
     * This function returns the desktop geometry for an application's splash
     * screen.  It takes into account the user's display settings (number of
     * screens, Xinerama, etc), and the user's preferences (if KDE should be
     * Xinerama aware).
     *
     * @return the geometry to use for the desktop.  Note that it might not
     *         start at (0,0).
     * @since 3.2
     */
    static TQRect splashScreenDesktopGeometry();

    /**
     * This function returns the desktop geometry for an application that needs
     * to set the geometry of a widget on the screen manually.  It takes into
     * account the user's display settings (number of screens, Xinerama, etc),
     * and the user's preferences (if KDE should be Xinerama aware).
     *
     * Note that this can break in multi-head (not Xinerama) mode because this
     * point could be on multiple screens.  Use with care.
     *
     * @param point a reference point for the widget, for instance one that the
     *              widget should be adjacent or on top of.
     *
     * @return the geometry to use for the desktop.  Note that it might not
     *         start at (0,0).
     * @since 3.2
     */
    static TQRect desktopGeometry(const TQPoint& point);

    /**
     * This function returns the desktop geometry for an application that needs
     * to set the geometry of a widget on the screen manually.  It takes into
     * account the user's display settings (number of screens, Xinerama, etc),
     * and the user's preferences (if KDE should be Xinerama aware).
     *
     * @param w the widget in question.  This is used to determine which screen
     *          to use in Xinerama or multi-head mode.
     *
     * @return the geometry to use for the desktop.  Note that it might not
     *         start at (0,0).
     * @since 3.2
     */
    static TQRect desktopGeometry(TQWidget* w);

    /**
     * This function determines if the user wishes to see icons on the
     * push buttons.
     *
     * @return Returns true if user wants to show icons.
     *
     * @since 3.2
     */
    static bool showIconsOnPushButtons();

    /**
     * This function determines if the user wishes to see previews
     * for the selected url
     *
     * @return Returns true if user wants to show previews.
     *
     * @since 3.2
     */
    static bool showFilePreview(const KURL &);

    /**
     * This function determines if the user wishes to see icon
     * activation effects in Konqueror or KDesktop
     *
     * @return Returns true if user wants to show activation effects.
     *
     * @since 3.5.12
     */
    static bool showKonqIconActivationEffect();

    /**
     * Whether the user wishes to use opaque resizing. Primarily
     * intended for TQSplitter::setOpaqueResize()
     * 
     * @return Returns true if user wants to use opaque resizing.
     *
     * @since 3.2
     */
    static bool opaqueResize();

    /**
     * The layout scheme to use for dialog buttons
     * 
     * @return Returns the number of the scheme to use.
     * @see KDialogBase::setButtonStyle()
     * @since 3.3
     */
    static int buttonLayout();

private:
    /**
     * global initialization - should only include paths initialization
     *
     * The method is primarily to ensure backward compatibility of the API.
     */
    static void initStatic();
    /**
     * reads in all paths from kdeglobals
     */
    static void initPaths();
    /**
     * initialize colors
     */
    static void initColors();
    /**
     * drop cached values for fonts (called by TDEApplication)
     */
    static void rereadFontSettings();
    /**
     * drop cached values for paths (called by TDEApplication)
     */
    static void rereadPathSettings();
    /**
     * drop cached values for mouse settings (called by TDEApplication)
     */
    static void rereadMouseSettings();


    static TQString *s_desktopPath;
    static TQString *s_autostartPath;
    static TQString *s_trashPath;
    static TQString *s_documentPath;
    static TQString *s_picturesPath;
    static TQString *s_templatesPath;
    static TQString *s_publicSharePath;
    static TQString *s_downloadPath;
    static TQString *s_musicPath;
    static TQString *s_videosPath;
    static TQFont *_generalFont;
    static TQFont *_fixedFont;
    static TQFont *_toolBarFont;
    static TQFont *_menuFont;
    static TQFont *_windowTitleFont;
    static TQFont *_taskbarFont;
    static TQFont *_largeFont;
    static TQColor *_trinity4Blue;
    static TQColor *_inactiveBackground;
    static TQColor *_inactiveForeground;
    static TQColor *_activeBackground;
    static TQColor *_buttonBackground;
    static TQColor *_selectBackground;
    static TQColor *_linkColor;
    static TQColor *_visitedLinkColor;
    static TQColor *alternateColor;
    static KMouseSettings *s_mouseSettings;

    friend class TDEApplication;
};

#endif