xref: /AOO41X/main/vcl/unx/kde4/KDESalGraphics.cxx (revision 9f62ea84a806e17e6f2bbff75724a7257a0eb5d9)

/**************************************************************
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_vcl.hxx"

#define _SV_SALNATIVEWIDGETS_KDE_CXX

#define Region QtXRegion

#include <QStyle>
#include <QStyleOption>
#include <QPainter>
#include <QFrame>
#include <QLabel>

#include <kapplication.h>

#undef Region

#include "KDESalGraphics.hxx"

#include "vcl/settings.hxx"
#include "vcl/decoview.hxx"
#include "rtl/ustrbuf.hxx"

using namespace ::rtl;

/**
  Conversion function between VCL ControlState together with
  ImplControlValue and Qt state flags.
  @param nControlState State of the widget (default, focused, ...) in Native Widget Framework.
  @param aValue Value held by the widget (on, off, ...)
*/
QStyle::State vclStateValue2StateFlag( ControlState nControlState,
	const ImplControlValue& aValue )
{
    QStyle::State nState =
		( (nControlState & CTRL_STATE_DEFAULT)?  QStyle::State_None:      QStyle::State_None ) |
		( (nControlState & CTRL_STATE_ENABLED)?  QStyle::State_Enabled:   QStyle::State_None ) |
		( (nControlState & CTRL_STATE_FOCUSED)?  QStyle::State_HasFocus:  QStyle::State_None ) |
		( (nControlState & CTRL_STATE_PRESSED)?  QStyle::State_Sunken:    QStyle::State_None ) |
		( (nControlState & CTRL_STATE_SELECTED)? QStyle::State_Selected : QStyle::State_None ) |
		( (nControlState & CTRL_STATE_ROLLOVER)? QStyle::State_MouseOver: QStyle::State_None );
		//TODO ( (nControlState & CTRL_STATE_HIDDEN)?   QStyle::State_:   QStyle::State_None ) |

    switch ( aValue.getTristateVal() )
    {
		case BUTTONVALUE_ON:    nState |= QStyle::State_On;       break;
		case BUTTONVALUE_OFF:   nState |= QStyle::State_Off;      break;
		case BUTTONVALUE_MIXED: nState |= QStyle::State_NoChange; break;
		default: break;
    }

    return nState;
}

/**
 Convert VCL Rectangle to QRect.
 @param rControlRegion The Rectangle to convert.
 @return The matching QRect
*/
QRect region2QRect( const Rectangle& rControlRegion )
{
    return QRect(rControlRegion.Left(), rControlRegion.Top(), rControlRegion.GetWidth(), rControlRegion.GetHeight());
}

KDESalGraphics::KDESalGraphics() :
    m_image(0)
{
}

KDESalGraphics::~KDESalGraphics()
{
    if (m_image)
		delete m_image;
}

sal_Bool KDESalGraphics::IsNativeControlSupported( ControlType type, ControlPart part )
{
	if (type == CTRL_PUSHBUTTON) return true;

	if (type == CTRL_MENUBAR) return true;

	if (type == CTRL_MENU_POPUP) return true;

	if (type == CTRL_EDITBOX) return true;

	if (type == CTRL_COMBOBOX) return true;

	if (type == CTRL_TOOLBAR) return true;

	if (type == CTRL_CHECKBOX) return true;

	if (type == CTRL_LISTBOX) return true;

	if (type == CTRL_LISTNODE) return true;

	if (type == CTRL_FRAME) return true;

	if (type == CTRL_SCROLLBAR) return true;

	if (type == CTRL_WINDOW_BACKGROUND) return true;

	if (type == CTRL_SPINBOX && (part == PART_ENTIRE_CONTROL || part == HAS_BACKGROUND_TEXTURE) ) return true;

    // no spinbuttons for KDE, paint spinbox complete
    //if (type == CTRL_SPINBUTTONS) return true;

	if (type == CTRL_GROUPBOX) return true;

	if (type == CTRL_FIXEDLINE) return true;

	if (type == CTRL_FIXEDBORDER) return true;

	if (type == CTRL_TOOLTIP) return true;

	if (type == CTRL_RADIOBUTTON) return true;

    if (type == CTRL_SLIDER && (part == PART_TRACK_HORZ_AREA || part == PART_TRACK_VERT_AREA) )
        return true;

	return false;

	if ( (type == CTRL_TAB_ITEM) && (part == PART_ENTIRE_CONTROL) ) return true;
	if ( (type == CTRL_TAB_PANE) && (part == PART_ENTIRE_CONTROL) ) return true;
	// no CTRL_TAB_BODY for KDE
	if ( (type == CTRL_PROGRESS)    && (part == PART_ENTIRE_CONTROL) ) return true;

	return false;
}

sal_Bool KDESalGraphics::hitTestNativeControl( ControlType, ControlPart,
										   const Rectangle&, const Point&,
										   sal_Bool& )
{
    return FALSE;
}

/// helper drawing methods
namespace
{
	void draw( QStyle::ControlElement element, QStyleOption* option, QImage* image, QStyle::State state )
	{
		option->state |= state;
		option->rect = image->rect();

		QPainter painter(image);
		kapp->style()->drawControl(element, option, &painter);
	}

	void draw( QStyle::PrimitiveElement element, QStyleOption* option, QImage* image, QStyle::State state, int nAdjust = 0 )
	{
		option->state |= state;
		option->rect = image->rect();
        if( nAdjust )
            option->rect.adjust( nAdjust, nAdjust, -nAdjust, -nAdjust );

		QPainter painter(image);
		kapp->style()->drawPrimitive(element, option, &painter);
	}

	void draw( QStyle::ComplexControl element, QStyleOptionComplex* option, QImage* image, QStyle::State state )
	{
		option->state |= state;
		option->rect = image->rect();

		QPainter painter(image);
		kapp->style()->drawComplexControl(element, option, &painter);
	}

    int getFrameWidth()
    {
        static int s_nFrameWidth = -1;
        if( s_nFrameWidth < 0 )
        {
            // fill in a default
            s_nFrameWidth = 2;
            QFrame aFrame( NULL );
            aFrame.setFrameRect( QRect(0, 0, 100, 30) );
            aFrame.setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
            aFrame.ensurePolished();
            s_nFrameWidth = aFrame.frameWidth();
        }
        return s_nFrameWidth;
    }

	void lcl_drawFrame(QStyle::PrimitiveElement element, QImage* image, QStyle::State state)
	{
	#if ( QT_VERSION >= QT_VERSION_CHECK( 4, 5, 0 ) )
		QStyleOptionFrameV3 option;
		option.frameShape = QFrame::StyledPanel;
		option.state = QStyle::State_Sunken;
	#else
		QStyleOptionFrame option;

		QFrame aFrame( NULL );
		aFrame.setFrameRect( QRect(0, 0, image->width(), image->height()) );
		aFrame.setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
		aFrame.ensurePolished();

		option.initFrom( &aFrame );
		option.lineWidth = aFrame.lineWidth();
		option.midLineWidth = aFrame.midLineWidth();
	#endif

		draw(element, &option, image, state);
	}
}

sal_Bool KDESalGraphics::drawNativeControl( ControlType type, ControlPart part,
										const Rectangle& rControlRegion, ControlState nControlState,
										const ImplControlValue& value,
										const OUString& )
{
    // put not implemented types here
	if (type == CTRL_SPINBUTTONS)
	{
        return false;
	}

   sal_Bool returnVal = true;

	QRect widgetRect = region2QRect(rControlRegion);
    if( type == CTRL_SPINBOX && part == PART_ALL_BUTTONS )
        type = CTRL_SPINBUTTONS;
    if( type == CTRL_SPINBUTTONS )
    {
        OSL_ASSERT( value.getType() != CTRL_SPINBUTTONS );
        const SpinbuttonValue* pSpinVal = static_cast<const SpinbuttonValue *>(&value);
        Rectangle aButtonRect( pSpinVal->maUpperRect);
        aButtonRect.Union( pSpinVal->maLowerRect );;
        widgetRect = QRect( aButtonRect.Left(), aButtonRect.Top(),
                            aButtonRect.Right(), aButtonRect.Bottom() );
    }

    //if no image, or resized, make a new image
    if (!m_image || m_image->size() != widgetRect.size())
	{
		if (m_image)
			delete m_image;

        m_image = new QImage( widgetRect.width(),
                              widgetRect.height(),
                              QImage::Format_ARGB32 );
	}
    m_image->fill(KApplication::palette().color(QPalette::Window).rgb());


    XLIB_Region pTempClipRegion = 0;

    if (type == CTRL_PUSHBUTTON)
    {
		QStyleOptionButton option;
		draw( QStyle::CE_PushButton, &option, m_image,
              vclStateValue2StateFlag(nControlState, value) );
    }
	else if ( (type == CTRL_MENUBAR))
	{
		if (part == PART_MENU_ITEM)
		{
			QStyleOptionMenuItem option;
			draw( QStyle::CE_MenuBarItem, &option, m_image,
                  vclStateValue2StateFlag(nControlState, value) );
		}
		else if (part == PART_ENTIRE_CONTROL)
		{
		}
        else
        {
            returnVal = false;
        }
	}
	else if (type == CTRL_MENU_POPUP)
	{
		if (part == PART_MENU_ITEM)
		{
			QStyleOptionMenuItem option;
			draw( QStyle::CE_MenuItem, &option, m_image,
                  vclStateValue2StateFlag(nControlState, value) );
		}
		else if (part == PART_MENU_ITEM_CHECK_MARK && (nControlState & CTRL_STATE_PRESSED) )
		{
			QStyleOptionButton option;
			draw( QStyle::PE_IndicatorMenuCheckMark, &option, m_image,
				  vclStateValue2StateFlag(nControlState, value) );
		}
		else if (part == PART_MENU_ITEM_RADIO_MARK && (nControlState & CTRL_STATE_PRESSED) )
		{
			QStyleOptionButton option;
			draw( QStyle::PE_IndicatorRadioButton, &option, m_image,
				  vclStateValue2StateFlag(nControlState, value) );
		}
		else
		{
            #if ( QT_VERSION >= QT_VERSION_CHECK( 4, 5, 0 ) )
			QStyleOptionFrameV3 option;
			option.frameShape = QFrame::StyledPanel;
            #else
			QStyleOptionFrameV2 option;
            #endif
			draw( QStyle::PE_FrameMenu, &option, m_image,
                  vclStateValue2StateFlag(nControlState, value) );
		}
	}
	else if ( (type == CTRL_TOOLBAR) && (part == PART_BUTTON) )
    {
		QStyleOptionToolButton option;

		option.arrowType = Qt::NoArrow;
		option.subControls = QStyle::SC_ToolButton;

		option.state = vclStateValue2StateFlag( nControlState, value );
		option.state |= QStyle::State_Raised | QStyle::State_Enabled | QStyle::State_AutoRaise;

        draw( QStyle::CC_ToolButton, &option, m_image,
              vclStateValue2StateFlag(nControlState, value) );
    }
	else if ( (type == CTRL_TOOLBAR) && (part == PART_ENTIRE_CONTROL) )
    {
		QStyleOptionToolBar option;

		option.rect = QRect(0, 0, widgetRect.width(), widgetRect.height());
		option.state = vclStateValue2StateFlag( nControlState, value );

        draw( QStyle::CE_ToolBar, &option, m_image,
              vclStateValue2StateFlag(nControlState, value) );
    }
	else if ( (type == CTRL_TOOLBAR) && (part == PART_THUMB_VERT) )
    {
        const int tw = widgetRect.width();
        widgetRect.setWidth(kapp->style()->pixelMetric(QStyle::PM_ToolBarHandleExtent));

        QStyleOption option;
        option.state = QStyle::State_Horizontal;

        draw( QStyle::PE_IndicatorToolBarHandle, &option, m_image,
              vclStateValue2StateFlag(nControlState, value) );

        widgetRect.setWidth(tw);
    }
	else if (type == CTRL_EDITBOX)
	{
		QStyleOptionFrameV2 option;
		draw( QStyle::PE_PanelLineEdit, &option, m_image,
              vclStateValue2StateFlag(nControlState, value), 2 );

		draw( QStyle::PE_FrameLineEdit, &option, m_image,
              vclStateValue2StateFlag(nControlState, value), 0 );
	}
	else if (type == CTRL_COMBOBOX)
	{
		QStyleOptionComboBox option;
		option.editable = true;

		draw( QStyle::CC_ComboBox, &option, m_image,
              vclStateValue2StateFlag(nControlState, value) );
	}
	else if (type == CTRL_LISTBOX)
	{
        if( part == PART_WINDOW )
        {
			lcl_drawFrame( QStyle::PE_Frame, m_image,
                           vclStateValue2StateFlag(nControlState, value) );
        }
        else
        {
            QStyleOptionComboBox option;
            if (part == PART_SUB_EDIT)
            {
                draw( QStyle::CE_ComboBoxLabel, &option, m_image,
                      vclStateValue2StateFlag(nControlState, value) );
            }
            else
            {
				draw( QStyle::CC_ComboBox, &option, m_image,
                      vclStateValue2StateFlag(nControlState, value) );
            }
        }
	}
	else if (type == CTRL_LISTNODE)
	{
		QStyleOption option;
		option.state = QStyle::State_Item | QStyle::State_Children;

		if (nControlState & CTRL_STATE_PRESSED)
            option.state |= QStyle::State_Open;

        draw( QStyle::PE_IndicatorBranch, &option, m_image,
              vclStateValue2StateFlag(nControlState, value) );
	}
	else if (type == CTRL_CHECKBOX)
	{
		QStyleOptionButton option;
		draw( QStyle::CE_CheckBox, &option, m_image,
			   vclStateValue2StateFlag(nControlState, value) );
	}
	else if (type == CTRL_SCROLLBAR)
	{
		if ((part == PART_DRAW_BACKGROUND_VERT) || (part == PART_DRAW_BACKGROUND_HORZ))
		{
            QStyleOptionSlider option;
            OSL_ASSERT( value.getType() == CTRL_SCROLLBAR );
			const ScrollbarValue* sbVal = static_cast<const ScrollbarValue *>(&value);

			//if the scroll bar is active (aka not degenrate...allow for hover events
			if (sbVal->mnVisibleSize < sbVal->mnMax)
                option.state = QStyle::State_MouseOver;

			//horizontal or vertical
			if (part == PART_DRAW_BACKGROUND_VERT)
                option.orientation = Qt::Vertical;
			else
                option.state |= QStyle::State_Horizontal;

			//setup parameters from the OO values
            option.minimum = sbVal->mnMin;
            option.maximum = sbVal->mnMax - sbVal->mnVisibleSize;
            option.sliderValue = sbVal->mnCur;
            option.sliderPosition = sbVal->mnCur;
            option.pageStep = sbVal->mnVisibleSize;

			//setup the active control...always the slider
			if (sbVal->mnThumbState & CTRL_STATE_ROLLOVER)
				option.activeSubControls = QStyle::SC_ScrollBarSlider;

            draw( QStyle::CC_ScrollBar, &option, m_image,
                  vclStateValue2StateFlag(nControlState, value) );
		}
        else
        {
            returnVal = false;
        }
	}
	else if (type == CTRL_SPINBOX)
	{
        QStyleOptionSpinBox option;

        // determine active control
        if( value.getType() == CTRL_SPINBUTTONS )
        {
            const SpinbuttonValue* pSpinVal = static_cast<const SpinbuttonValue *>(&value);
            if( (pSpinVal->mnUpperState & CTRL_STATE_PRESSED) )
                option.activeSubControls |= QStyle::SC_SpinBoxUp;
            if( (pSpinVal->mnLowerState & CTRL_STATE_PRESSED) )
                option.activeSubControls |= QStyle::SC_SpinBoxDown;
        }

		draw( QStyle::CC_SpinBox, &option, m_image,
              vclStateValue2StateFlag(nControlState, value) );
	}
	else if (type == CTRL_GROUPBOX)
	{
		QStyleOptionGroupBox option;
		draw( QStyle::CC_GroupBox, &option, m_image,
              vclStateValue2StateFlag(nControlState, value) );
	}
	else if (type == CTRL_RADIOBUTTON)
	{
		QStyleOptionButton option;
		draw( QStyle::CE_RadioButton, &option, m_image,
			  vclStateValue2StateFlag(nControlState, value) );
	}
	else if (type == CTRL_TOOLTIP)
	{
		QStyleOption option;
		draw( QStyle::PE_PanelTipLabel, &option, m_image,
			  vclStateValue2StateFlag(nControlState, value) );
	}
	else if (type == CTRL_FRAME)
	{
        lcl_drawFrame( QStyle::PE_Frame, m_image,
                       vclStateValue2StateFlag(nControlState, value) );

        // draw just the border, see http://qa.openoffice.org/issues/show_bug.cgi?id=107945
        int nFrameWidth = getFrameWidth();
        pTempClipRegion = XCreateRegion();
        XRectangle xRect = { widgetRect.left(), widgetRect.top(), widgetRect.width(), widgetRect.height() };
        XUnionRectWithRegion( &xRect, pTempClipRegion, pTempClipRegion );
        xRect.x += nFrameWidth;
        xRect.y += nFrameWidth;

        // do not crash for too small widgets, see http://qa.openoffice.org/issues/show_bug.cgi?id=112102
        if( xRect.width > 2*nFrameWidth && xRect.height > 2*nFrameWidth )
        {
            xRect.width -= 2*nFrameWidth;
            xRect.height -= 2*nFrameWidth;

            XLIB_Region pSubtract = XCreateRegion();
            XUnionRectWithRegion( &xRect, pSubtract, pSubtract );
            XSubtractRegion( pTempClipRegion, pSubtract, pTempClipRegion );
            XDestroyRegion( pSubtract );
        }
	}
	else if (type == CTRL_FIXEDBORDER)
	{
        lcl_drawFrame( QStyle::PE_FrameWindow, m_image,
                       vclStateValue2StateFlag(nControlState, value) );
	}
	else if (type == CTRL_WINDOW_BACKGROUND)
	{
        m_image->fill(KApplication::palette().color(QPalette::Window).rgb());
	}
	else if (type == CTRL_FIXEDLINE)
	{
		QStyleOptionMenuItem option;
		option.menuItemType = QStyleOptionMenuItem::Separator;
        option.state |= QStyle::State_Item;

		draw( QStyle::CE_MenuItem, &option, m_image,
              vclStateValue2StateFlag(nControlState, value) );
	}
	else if (type == CTRL_SLIDER && (part == PART_TRACK_HORZ_AREA || part == PART_TRACK_VERT_AREA))
	{
	    OSL_ASSERT( value.getType() == CTRL_SLIDER );
        const SliderValue* slVal = static_cast<const SliderValue *>(&value);
		QStyleOptionSlider option;

		option.rect = QRect(0, 0, widgetRect.width(), widgetRect.height());
		option.state = vclStateValue2StateFlag( nControlState, value );
        option.maximum     = slVal->mnMax;
        option.minimum     = slVal->mnMin;
        option.sliderPosition = option.sliderValue = slVal->mnCur;
        option.orientation = (part == PART_TRACK_HORZ_AREA) ? Qt::Horizontal : Qt::Vertical;

        draw( QStyle::CC_Slider, &option, m_image, vclStateValue2StateFlag(nControlState, value) );
	}
	else
	{
		returnVal = false;
	}

	if (returnVal)
	{
        GC gc = GetFontGC();

        if( gc )
        {
            if( pTempClipRegion )
            {
                if( mpClipRegion )
                    XIntersectRegion( pTempClipRegion, mpClipRegion, pTempClipRegion );
                XSetRegion( GetXDisplay(), gc, pTempClipRegion );
            }
            QPixmap pixmap = QPixmap::fromImage(*m_image, Qt::ColorOnly | Qt::OrderedDither | Qt::OrderedAlphaDither);
            X11SalGraphics::CopyScreenArea( GetXDisplay(),
                pixmap.handle(), pixmap.x11Info().screen(), pixmap.x11Info().depth(),
                GetDrawable(), GetScreenNumber(), GetVisual().GetDepth(),
                gc, 0, 0, widgetRect.width(), widgetRect.height(), widgetRect.left(), widgetRect.top());

            if( pTempClipRegion )
            {
                if( mpClipRegion )
                    XSetRegion( GetXDisplay(), gc, mpClipRegion );
                else
                    XSetClipMask( GetXDisplay(), gc, None );
            }
        }
        else
            returnVal = false;
	}
    if( pTempClipRegion )
        XDestroyRegion( pTempClipRegion );

    return returnVal;
}

sal_Bool KDESalGraphics::getNativeControlRegion( ControlType type, ControlPart part,
											 const Rectangle& controlRegion, ControlState controlState,
											 const ImplControlValue& val,
											 const OUString&,
											 Rectangle &nativeBoundingRegion, Rectangle &nativeContentRegion )
{
    bool retVal = false;

    QRect boundingRect = region2QRect( controlRegion );
    QRect contentRect = boundingRect;
    QStyleOptionComplex styleOption;

    switch ( type )
    {
		// Metrics of the push button
		case CTRL_PUSHBUTTON:
			if (part == PART_ENTIRE_CONTROL)
			{
				styleOption.state = vclStateValue2StateFlag(controlState, val);

				if ( controlState & CTRL_STATE_DEFAULT )
				{
					int size = kapp->style()->pixelMetric(
						QStyle::PM_ButtonDefaultIndicator, &styleOption );

					boundingRect.adjust( -size, -size, size, size );

					retVal = true;
				}
			}
			break;
		case CTRL_EDITBOX:
		{
            int nFontHeight    = kapp->fontMetrics().height();
			//int nFrameSize     = kapp->style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
			int nLayoutTop     = kapp->style()->pixelMetric(QStyle::PM_LayoutTopMargin);
            int nLayoutBottom  = kapp->style()->pixelMetric(QStyle::PM_LayoutBottomMargin);
			int nLayoutLeft    = kapp->style()->pixelMetric(QStyle::PM_LayoutLeftMargin);
            int nLayoutRight   = kapp->style()->pixelMetric(QStyle::PM_LayoutRightMargin);

            int nMinHeight = (nFontHeight + nLayoutTop + nLayoutBottom);
            if( boundingRect.height() < nMinHeight )
            {
                int delta = nMinHeight - boundingRect.height();
                boundingRect.adjust( 0, 0, 0, delta );
            }
            contentRect = boundingRect;
            contentRect.adjust( -nLayoutLeft+1, -nLayoutTop+1, nLayoutRight-1, nLayoutBottom-1 );
			retVal = true;

			break;
		}
		case CTRL_CHECKBOX:
			if (part == PART_ENTIRE_CONTROL)
			{
				styleOption.state = vclStateValue2StateFlag(controlState, val);

				contentRect.setWidth(kapp->style()->pixelMetric(
					QStyle::PM_IndicatorWidth, &styleOption));
				contentRect.setHeight(kapp->style()->pixelMetric(
					QStyle::PM_IndicatorHeight, &styleOption));

				contentRect.adjust(0, 0,
                    2 * kapp->style()->pixelMetric(
                        QStyle::PM_FocusFrameHMargin, &styleOption),
                    2 * kapp->style()->pixelMetric(
                        QStyle::PM_FocusFrameVMargin, &styleOption)
                    );

				boundingRect = contentRect;

				retVal = true;

				break;
			}
		case CTRL_COMBOBOX:
		case CTRL_LISTBOX:
		{
			QStyleOptionComboBox cbo;

			cbo.rect = QRect(0, 0, contentRect.width(), contentRect.height());
			cbo.state = vclStateValue2StateFlag(controlState, val);

			switch ( part )
			{
				case PART_ENTIRE_CONTROL:
				{
					int size = kapp->style()->pixelMetric(QStyle::PM_ComboBoxFrameWidth) - 2;

                    // find out the minimum size that should be used
                    // assume contents is a text ling
                    int nHeight = kapp->fontMetrics().height();
                    QSize aContentSize( contentRect.width(), nHeight );
                    QSize aMinSize = kapp->style()->
                        sizeFromContents( QStyle::CT_ComboBox, &cbo, aContentSize );
                    if( aMinSize.height() > contentRect.height() )
                        contentRect.adjust( 0, 0, 0, aMinSize.height() - contentRect.height() );
                    boundingRect = contentRect;
                    // FIXME: why this difference between comboboxes and listboxes ?
                    // because a combobox has a sub edit and that is positioned
                    // inside the outer bordered control ?
                    if( type == CTRL_COMBOBOX )
                        contentRect.adjust(-size,-size,size,size);
					retVal = true;
					break;
				}
				case PART_BUTTON_DOWN:
					//the entire control can be used as the "down" button
					retVal = true;
					break;
				case PART_SUB_EDIT:
					contentRect = kapp->style()->subControlRect(
						QStyle::CC_ComboBox, &cbo, QStyle::SC_ComboBoxEditField );

					contentRect.translate( boundingRect.left(), boundingRect.top() );

					retVal = true;
					break;
                case PART_WINDOW:
                    retVal = true;
                    break;
			}
			break;
		}
		case CTRL_SPINBOX:
		{
			QStyleOptionSpinBox sbo;

			sbo.rect = QRect(0, 0, contentRect.width(), contentRect.height());
			sbo.state = vclStateValue2StateFlag(controlState, val);

			switch ( part )
			{
				case PART_BUTTON_UP:
					contentRect = kapp->style()->subControlRect(
						QStyle::CC_SpinBox, &sbo, QStyle::SC_SpinBoxUp );
					contentRect.translate( boundingRect.left(), boundingRect.top() );
					retVal = true;
					boundingRect = QRect();
					break;

				case PART_BUTTON_DOWN:
					contentRect = kapp->style()->subControlRect(
						QStyle::CC_SpinBox, &sbo, QStyle::SC_SpinBoxDown );
					retVal = true;
					contentRect.translate( boundingRect.left(), boundingRect.top() );
					boundingRect = QRect();
					break;

				case PART_SUB_EDIT:
					contentRect = kapp->style()->subControlRect(
						QStyle::CC_SpinBox, &sbo, QStyle::SC_SpinBoxEditField );
					retVal = true;
					contentRect.translate( boundingRect.left(), boundingRect.top() );
					break;
				default:
					retVal = true;
			}
			break;
		}
		case CTRL_MENU_POPUP:
			//just limit the widget of the menu items
			//OO isn't very flexible in all reguards with the menu
			//so we do the best we can
			if (part == PART_MENU_ITEM_CHECK_MARK)
			{
				contentRect.setWidth(contentRect.height());
				retVal = true;
			}
			else if (part == PART_MENU_ITEM_RADIO_MARK)
			{
				contentRect.setWidth(contentRect.height());
				retVal = true;
			}
			break;
		case CTRL_FRAME:
        {
            if( part == PART_BORDER )
            {
                int nFrameWidth = getFrameWidth();
                sal_uInt16 nStyle = val.getNumericVal();
                if( nStyle & FRAME_DRAW_NODRAW )
                {
                    // in this case the question is: how thick would a frame be
                    // see brdwin.cxx, decoview.cxx
                    // most probably the behavior in decoview.cxx is wrong.
                    contentRect.adjust(nFrameWidth, nFrameWidth, -nFrameWidth, -nFrameWidth);
                }
                retVal = true;
            }
			break;
        }
		case CTRL_RADIOBUTTON:
		{
			const int h = kapp->style()->pixelMetric(QStyle::PM_ExclusiveIndicatorHeight);
			const int w = kapp->style()->pixelMetric(QStyle::PM_ExclusiveIndicatorWidth);

			contentRect = QRect(boundingRect.left(), boundingRect.top(), w, h);
            contentRect.adjust(0, 0,
                2 * kapp->style()->pixelMetric(
                    QStyle::PM_FocusFrameHMargin, &styleOption),
                2 * kapp->style()->pixelMetric(
                    QStyle::PM_FocusFrameVMargin, &styleOption)
                );
            boundingRect = contentRect;

			retVal = true;
            break;
		}
        case CTRL_SLIDER:
        {
            const int w = kapp->style()->pixelMetric(QStyle::PM_SliderLength);
            if( part == PART_THUMB_HORZ )
            {
                contentRect = QRect(boundingRect.left(), boundingRect.top(), w, boundingRect.height());
                boundingRect = contentRect;
                retVal = true;
            }
            else if( part == PART_THUMB_VERT )
            {
                contentRect = QRect(boundingRect.left(), boundingRect.top(), boundingRect.width(), w);
                boundingRect = contentRect;
                retVal = true;
            }
            break;
        }
		default:
			break;
	}
#if 0


		// Metrics of the scroll bar
		case CTRL_SCROLLBAR:
			//pWidget = pWidgetPainter->scrollBar( rControlRegion,
				//( part == PART_BUTTON_LEFT || part == PART_BUTTON_RIGHT ),
				//ImplControlValue() );
			//aStyleOption.initFrom( pWidget );

			switch ( part )
			{
			case PART_BUTTON_LEFT:
			case PART_BUTTON_UP:
				qRect = kapp->style()->subControlRect(
					QStyle::CC_ScrollBar, &aStyleOption, QStyle::SC_ScrollBarSubLine );

				// Workaround for Platinum style scroll bars. It makes the
				// left/up button invisible.
				if ( part == PART_BUTTON_LEFT )
				{
					if ( qRect.left() > kapp->style()->subControlRect(
						QStyle::CC_ScrollBar, &aStyleOption,
						QStyle::SC_ScrollBarSubPage ).left() )
					{
						qRect.setLeft( 0 );
						qRect.setRight( 0 );
					}
				}
				else
				{
					if ( qRect.top() > kapp->style()->subControlRect(
						QStyle::CC_ScrollBar, &aStyleOption,
						QStyle::SC_ScrollBarSubPage ).top() )
					{
						qRect.setTop( 0 );
						qRect.setBottom( 0 );
					}
				}

				qRect.translate( qBoundingRect.left(), qBoundingRect.top() );

				bReturn = TRUE;
				break;

			case PART_BUTTON_RIGHT:
			case PART_BUTTON_DOWN:
				qRect = kapp->style()->subControlRect(
					QStyle::CC_ScrollBar, &aStyleOption, QStyle::SC_ScrollBarAddLine );

				// Workaround for Platinum and 3 button style scroll bars.
				// It makes the right/down button bigger.
				if ( part == PART_BUTTON_RIGHT )
					qRect.setLeft( kapp->style()->subControlRect(
						QStyle::CC_ScrollBar, &aStyleOption,
						QStyle::SC_ScrollBarAddPage ).right() + 1 );
				else
					qRect.setTop( kapp->style()->subControlRect(
						QStyle::CC_ScrollBar, &aStyleOption,
						QStyle::SC_ScrollBarAddPage ).bottom() + 1 );

				qRect.translate( qBoundingRect.left(), qBoundingRect.top() );

				bReturn = TRUE;
				break;
			}
			break;
    }
#endif

    if (retVal)
    {
		// Bounding region
		Point aBPoint( boundingRect.x(), boundingRect.y() );
		Size aBSize( boundingRect.width(), boundingRect.height() );
		nativeBoundingRegion = Rectangle( aBPoint, aBSize );

		// Region of the content
		Point aPoint( contentRect.x(), contentRect.y() );
		Size  aSize( contentRect.width(), contentRect.height() );
		nativeContentRegion = Rectangle( aPoint, aSize );
    }

    return retVal;
}