119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla MathML Project.
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*
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* The Initial Developer of the Original Code is The University Of
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* Queensland. Portions created by The University Of Queensland are
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* Copyright (C) 1999 The University Of Queensland. All Rights Reserved.
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*
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* Contributor(s):
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* Roger B. Sidje <rbs@maths.uq.edu.au>
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*/
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#ifndef nsMathMLChar_h___
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#define nsMathMLChar_h___
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#include "nsMathMLOperators.h"
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typedef PRUint32 nsStretchDirection;
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#define NS_STRETCH_DIRECTION_HORIZONTAL 0
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#define NS_STRETCH_DIRECTION_VERTICAL 1
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// Structure used for a char's size and alignment information.
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struct nsCharMetrics {
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// nscoord leading;
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nscoord descent, ascent;
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nscoord width, height;
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nsCharMetrics(nscoord Descent=0, nscoord Ascent=0,
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nscoord Width=0, nscoord Height=0) {
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width = Width;
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height = Height;
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ascent = Ascent;
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descent = Descent;
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}
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nsCharMetrics(const nsCharMetrics& aCharMetrics) {
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width = aCharMetrics.width;
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height = aCharMetrics.height;
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ascent = aCharMetrics.ascent;
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descent = aCharMetrics.descent;
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}
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nsCharMetrics(const nsReflowMetrics& aReflowMetrics) {
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width = aReflowMetrics.width;
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height = aReflowMetrics.height;
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ascent = aReflowMetrics.ascent;
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descent = aReflowMetrics.descent;
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}
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void
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operator=(const nsCharMetrics& aCharMetrics) {
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width = aCharMetrics.width;
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height = aCharMetrics.height;
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ascent = aCharMetrics.ascent;
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descent = aCharMetrics.descent;
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}
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PRBool
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operator==(const nsCharMetrics& aCharMetrics) {
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return (width == aCharMetrics.width &&
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height == aCharMetrics.height &&
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ascent == aCharMetrics.ascent &&
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descent == aCharMetrics.descent);
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}
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};
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// class used to handle stretchy symbols (accent and boundary symbols)
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class nsMathMLChar
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{
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public:
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NS_IMETHOD Paint(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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nsIStyleContext* aStyleContext,
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const nsPoint& aOffset);
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// This is the method called to ask the char to stretch itself.
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// aDesiredStretchSize is an IN/OUT parameter.
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// On input - it contains our current size.
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// On output - the same size or the new size that we want.
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NS_IMETHOD Stretch(nsIPresContext& aPresContext,
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nsIStyleContext* aStyleContext,
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nsStretchDirection aStretchDirection,
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nsCharMetrics& aContainerSize,
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nsCharMetrics& aDesiredStretchSize);
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void SetData(nsString& aData)
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{
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mData = aData;
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}
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void GetData(nsString& aData) {
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aData = mData;
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}
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// constructor and destructor
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nsMathMLChar()
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{
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}
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virtual ~nsMathMLChar()
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{
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}
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protected:
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nsString mData;
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};
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#endif /* nsMathMLChar_h___ */
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