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357 lines
13 KiB
357 lines
13 KiB
/*
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* $Id$
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*
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* KStyle
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* Copyright (C) 2001-2002 Karol Szwed <gallium@kde.org>
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*
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* TQWindowsStyle CC_ListView and style images were kindly donated by TrollTech,
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* Copyright (C) 1998-2000 TrollTech AS.
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*
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* Many thanks to Bradley T. Hughes for the 3 button scrollbar code.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __KSTYLE_H
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#define __KSTYLE_H
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// W A R N I N G
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// -------------
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// This API is still subject to change.
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// I will remove this warning when I feel the API is sufficiently flexible.
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#include <tqcommonstyle.h>
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#include <kdelibs_export.h>
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class KPixmap;
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struct KStylePrivate;
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/**
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* Simplifies and extends the TQStyle API to make style coding easier.
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*
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* The KStyle class provides a simple internal menu transparency engine
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* which attempts to use XRender for accelerated blending where requested,
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* or falls back to fast internal software tinting/blending routines.
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* It also simplifies more complex portions of the TQStyle API, such as
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* the PopupMenuItems, ScrollBars and Sliders by providing extra "primitive
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* elements" which are simple to implement by the style writer.
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*
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* @see TQStyle::QStyle
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* @see TQCommonStyle::QCommonStyle
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* @author Karol Szwed (gallium@kde.org)
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* @version $Id$
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*/
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class KDEFX_EXPORT KStyle: public TQCommonStyle
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{
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Q_OBJECT
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TQ_OBJECT
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public:
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/**
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* KStyle Flags:
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*
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* @li Default - Default style setting, where menu transparency
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* and the FilledFrameWorkaround are disabled.
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*
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* @li AllowMenuTransparency - Enable this flag to use KStyle's
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* internal menu transparency engine.
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*
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* @li FilledFrameWorkaround - Enable this flag to facilitate
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* proper tqrepaints of QMenuBars and QToolBars when the style chooses
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* to paint the interior of a TQFrame. The style primitives in question
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* are PE_PanelMenuBar and PE_PanelDockWindow. The HighColor style uses
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* this workaround to enable painting of gradients in menubars and
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* toolbars.
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*/
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typedef uint KStyleFlags;
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enum KStyleOption {
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Default = 0x00000000, //!< All options disabled
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AllowMenuTransparency = 0x00000001, //!< Internal transparency enabled
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FilledFrameWorkaround = 0x00000002 //!< Filled frames enabled
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};
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/**
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* KStyle ScrollBarType:
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*
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* Allows the style writer to easily select what type of scrollbar
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* should be used without having to duplicate large amounts of source
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* code by implementing the complex control CC_ScrollBar.
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*
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* @li WindowsStyleScrollBar - Two button scrollbar with the previous
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* button at the top/left, and the next button at the bottom/right.
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*
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* @li PlatinumStyleScrollBar - Two button scrollbar with both the
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* previous and next buttons at the bottom/right.
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*
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* @li ThreeButtonScrollBar - %KDE style three button scrollbar with
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* two previous buttons, and one next button. The next button is always
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* at the bottom/right, whilst the two previous buttons are on either
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* end of the scrollbar.
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*
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* @li NextStyleScrollBar - Similar to the PlatinumStyle scroll bar, but
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* with the buttons grouped on the opposite end of the scrollbar.
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*
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* @see KStyle::KStyle()
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*/
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enum KStyleScrollBarType {
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WindowsStyleScrollBar = 0x00000000, //!< two button, windows style
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PlatinumStyleScrollBar = 0x00000001, //!< two button, platinum style
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ThreeButtonScrollBar = 0x00000002, //!< three buttons, %KDE style
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NextStyleScrollBar = 0x00000004 //!< two button, NeXT style
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};
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/**
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* Constructs a KStyle object.
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*
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* Select the appropriate KStyle flags and scrollbar type
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* for your style. The user's style preferences selected in KControl
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* are read by using TQSettings and are automatically applied to the style.
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* As a fallback, KStyle paints progressbars and tabbars. It inherits from
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* TQCommonStyle for speed, so don't expect much to be implemented.
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*
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* It is advisable to use a currently implemented style such as the HighColor
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* style as a foundation for any new KStyle, so the limited number of
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* drawing fallbacks should not prove problematic.
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*
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* @param flags the style to be applied
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* @param sbtype the scroll bar type
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* @see KStyle::KStyleFlags
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* @see KStyle::KStyleScrollBarType
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* @author Karol Szwed (gallium@kde.org)
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*/
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KStyle( KStyleFlags flags = KStyle::Default,
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KStyleScrollBarType sbtype = KStyle::WindowsStyleScrollBar );
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/**
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* Destructs the KStyle object.
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*/
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~KStyle();
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/**
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* Returns the default widget style depending on color depth.
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*/
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static TQString defaultStyle();
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/**
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* Modifies the scrollbar type used by the style.
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*
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* This function is only provided for convenience. It allows
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* you to make a late decision about what scrollbar type to use for the
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* style after performing some processing in your style's constructor.
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* In most situations however, setting the scrollbar type via the KStyle
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* constructor should suffice.
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* @param sbtype the scroll bar type
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* @see KStyle::KStyleScrollBarType
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*/
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void setScrollBarType(KStyleScrollBarType sbtype);
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/**
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* Returns the KStyle flags used to initialize the style.
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*
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* This is used solely for the kcmstyle module, and hence is internal.
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*/
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KStyleFlags styleFlags() const;
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// ---------------------------------------------------------------------------
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/**
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* This virtual function defines the pixmap used to blend between the popup
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* menu and the background to create different menu transparency effects.
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* For example, you can fill the pixmap "pix" with a gradient based on the
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* popup's tqcolorGroup, a texture, or some other fancy painting routine.
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* KStyle will then internally blend this pixmap with a snapshot of the
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* background behind the popupMenu to create the illusion of transparency.
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*
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* This virtual is never called if XRender/Software blending is disabled by
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* the user in KDE's style control module.
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*/
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virtual void renderMenuBlendPixmap( KPixmap& pix, const TQColorGroup& cg,
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const TQPopupMenu* popup ) const;
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/**
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* KStyle Primitive Elements:
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*
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* The KStyle class extends the Qt's Style API by providing certain
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* simplifications for parts of TQStyle. To do this, the KStylePrimitive
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* elements were defined, which are very similar to Qt's PrimitiveElement.
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*
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* The first three Handle primitives simplify and extend PE_DockWindowHandle,
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* so do not reimplement PE_DockWindowHandle if you want the KStyle handle
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* simplifications to be operable. Similarly do not reimplement CC_Slider,
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* SC_SliderGroove and SC_SliderHandle when using the KStyle slider
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* primitives. KStyle automatically double-buffers slider painting
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* when they are drawn via these KStyle primitives to avoid flicker.
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*
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* @li KPE_DockWindowHandle - This primitive is already implemented in KStyle,
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* and paints a bevelled rect with the DockWindow caption text. Re-implement
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* this primitive to perform other more fancy effects when drawing the dock window
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* handle.
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*
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* @li KPE_ToolBarHandle - This primitive must be reimplemented. It currently
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* only paints a filled rectangle as default behavior. This primitive is used
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* to render TQToolBar handles.
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*
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* @li KPE_GeneralHandle - This primitive must be reimplemented. It is used
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* to render general handles that are not part of a TQToolBar or TQDockWindow, such
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* as the applet handles used in Kicker. The default implementation paints a filled
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* rect of arbitrary color.
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*
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* @li KPE_SliderGroove - This primitive must be reimplemented. It is used to
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* paint the slider groove. The default implementation paints a filled rect of
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* arbitrary color.
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*
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* @li KPE_SliderHandle - This primitive must be reimplemented. It is used to
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* paint the slider handle. The default implementation paints a filled rect of
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* arbitrary color.
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*
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* @li KPE_ListViewExpander - This primitive is already implemented in KStyle. It
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* is used to draw the Expand/Collapse element in QListViews. To indicate the
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* expanded state, the style flags are set to Style_Off, while Style_On implies collapsed.
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*
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* @li KPE_ListViewBranch - This primitive is already implemented in KStyle. It is
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* used to draw the ListView branches where necessary.
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*/
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enum KStylePrimitive {
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KPE_DockWindowHandle,
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KPE_ToolBarHandle,
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KPE_GeneralHandle,
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KPE_SliderGroove,
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KPE_SliderHandle,
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KPE_ListViewExpander,
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KPE_ListViewBranch
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};
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/**
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* This function is identical to Qt's TQStyle::tqdrawPrimitive(), except that
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* it adds one further parameter, 'widget', that can be used to determine
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* the widget state of the KStylePrimitive in question.
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*
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* @see KStyle::KStylePrimitive
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* @see TQStyle::tqdrawPrimitive
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* @see TQStyle::tqdrawComplexControl
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*/
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virtual void drawKStylePrimitive( KStylePrimitive kpe,
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TQPainter* p,
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const TQWidget* widget,
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const TQRect &r,
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const TQColorGroup &cg,
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SFlags flags = Style_Default,
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const TQStyleOption& = TQStyleOption::SO_Default ) const;
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enum KStylePixelMetric {
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KPM_MenuItemSeparatorHeight = 0x00000001,
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KPM_MenuItemHMargin = 0x00000002,
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KPM_MenuItemVMargin = 0x00000004,
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KPM_MenuItemHFrame = 0x00000008,
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KPM_MenuItemVFrame = 0x00000010,
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KPM_MenuItemCheckMarkHMargin = 0x00000020,
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KPM_MenuItemArrowHMargin = 0x00000040,
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KPM_MenuItemTabSpacing = 0x00000080,
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KPM_ListViewBranchThickness = 0x00000100
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};
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int kPixelMetric( KStylePixelMetric kpm, const TQWidget* widget = 0 ) const;
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// ---------------------------------------------------------------------------
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void polish( TQWidget* widget );
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void unPolish( TQWidget* widget );
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void polishPopupMenu( TQPopupMenu* );
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void tqdrawPrimitive( TQ_PrimitiveElement pe,
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TQPainter* p,
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const TQRect &r,
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const TQColorGroup &cg,
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SFlags flags = Style_Default,
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const TQStyleOption& = TQStyleOption::SO_Default ) const;
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// #ifdef USE_QT4 // kdebindings / smoke needs this function declaration available at all times. Furthermore I don't think it would hurt to have the declaration available at all times...so leave these commented out for now
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// void tqdrawPrimitive( ControlElement pe,
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// TQPainter* p,
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// const TQRect &r,
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// const TQColorGroup &cg,
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// SFlags flags = Style_Default,
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// const TQStyleOption& = TQStyleOption::SO_Default ) const;
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// #endif // USE_QT4
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void tqdrawControl( ControlElement element,
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TQPainter* p,
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const TQWidget* widget,
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const TQRect &r,
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const TQColorGroup &cg,
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SFlags flags = Style_Default,
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const TQStyleOption& = TQStyleOption::SO_Default ) const;
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void tqdrawComplexControl( ComplexControl control,
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TQPainter *p,
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const TQWidget* widget,
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const TQRect &r,
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const TQColorGroup &cg,
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SFlags flags = Style_Default,
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SCFlags controls = SC_All,
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SCFlags active = SC_None,
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const TQStyleOption& = TQStyleOption::SO_Default ) const;
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SubControl querySubControl( ComplexControl control,
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const TQWidget* widget,
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const TQPoint &pos,
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const TQStyleOption& = TQStyleOption::SO_Default ) const;
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TQRect querySubControlMetrics( ComplexControl control,
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const TQWidget* widget,
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SubControl sc,
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const TQStyleOption& = TQStyleOption::SO_Default ) const;
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int tqpixelMetric( PixelMetric m,
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const TQWidget* widget = 0 ) const;
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TQRect subRect( SubRect r,
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const TQWidget* widget ) const;
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TQPixmap stylePixmap( StylePixmap stylepixmap,
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const TQWidget* widget = 0,
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const TQStyleOption& = TQStyleOption::SO_Default ) const;
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int tqstyleHint( StyleHint sh,
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const TQWidget* w = 0,
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const TQStyleOption &opt = TQStyleOption::SO_Default,
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QStyleHintReturn* shr = 0 ) const;
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protected:
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bool eventFilter( TQObject* object, TQEvent* event );
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private:
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// Disable copy constructor and = operator
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KStyle( const KStyle & );
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KStyle& operator=( const KStyle & );
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protected:
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virtual void virtual_hook( int id, void* data );
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private:
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KStylePrivate *d;
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};
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// vim: set noet ts=4 sw=4:
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#endif
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