xref: /AOO41X/main/vcl/unx/kde4/KDESalGraphics.hxx (revision 0d63794c5b3715d9f8da2f4b7b451b7426ee7897)

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 *
 * 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
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#pragma once

#include <rtl/string.hxx>
#include <unx/saldisp.hxx>
#include <unx/salgdi.h>

#define Region QtXRegion
#include <QImage>
#undef Region

/** handles graphics drawings requests and performs the needed drawing operations */
class KDESalGraphics : public X11SalGraphics
{
    QImage* m_image;

	public:
        KDESalGraphics();
        virtual ~KDESalGraphics();

		/**
			What widgets can be drawn the native way.
			@param type Type of the widget.
			@param part Specification of the widget's part if it consists of more than one.
			@return true if the platform supports native drawing of the widget type defined by part.
		*/
		virtual sal_Bool IsNativeControlSupported( ControlType type, ControlPart part );

		/** Test whether the position is in the native widget.
			If the return value is TRUE, bIsInside contains information whether
			aPos was or was not inside the native widget specified by the
			type/part combination.
		*/
		virtual sal_Bool hitTestNativeControl( ControlType type, ControlPart part,
										const Rectangle& rControlRegion, const Point& aPos,
										sal_Bool& rIsInside );
		/** Draw the requested control described by part/nControlState.

			@param rControlRegion
			The bounding Rectangle of the complete control in VCL frame coordinates.

			@param aValue
			An optional value (tristate/numerical/string).

			@param aCaption
			A caption or title string (like button text etc.)
		*/
		virtual sal_Bool drawNativeControl( ControlType type, ControlPart part,
										const Rectangle& rControlRegion, ControlState nControlState,
										const ImplControlValue& aValue,
										const rtl::OUString& aCaption );

		/** Draw text on the widget.
			OPTIONAL. Draws the requested text for the control described by part/nControlState.
			Used if text is not drawn by DrawNativeControl().

			@param rControlRegion The bounding region of the complete control in VCL frame coordinates.
			@param aValue An optional value (tristate/numerical/string)
			@param aCaption	A caption or title string (like button text etc.)
		*/
		virtual sal_Bool drawNativeControlText( ControlType, ControlPart,
											const Rectangle&, ControlState,
											const ImplControlValue&,
											const rtl::OUString& ) { return false; }
		/** Check if the bounding regions match.

			If the return value is TRUE, rNativeBoundingRegion
			contains the true bounding region covered by the control
			including any adornment, while rNativeContentRegion contains the area
			within the control that can be safely drawn into without drawing over
			the borders of the control.

			@param rControlRegion
			The bounding region of the control in VCL frame coordinates.

			@param aValue
			An optional value (tristate/numerical/string)

			@param aCaption
			A caption or title string (like button text etc.)
		*/
		virtual sal_Bool getNativeControlRegion( ControlType type, ControlPart part,
											const Rectangle& rControlRegion, ControlState nControlState,
											const ImplControlValue& aValue,
											const rtl::OUString& aCaption,
											Rectangle &rNativeBoundingRegion, Rectangle &rNativeContentRegion );
};