gecko-dev/layout/base/nsCSSRendering.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsCSSRendering_h___
#define nsCSSRendering_h___
#include "nsIRenderingContext.h"
#include "nsIStyleContext.h"
struct nsPoint;
class nsCSSRendering {
public:
/**
* Render the border for an element using css rendering rules
* for borders. aSkipSides is a bitmask of the sides to skip
* when rendering. If 0 then no sides are skipped.
*
* Both aDirtyRect and aBorderArea are in the local coordinate space
* of aForFrame
*/
static void PaintBorder(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
nsIFrame* aForFrame,
const nsRect& aDirtyRect,
const nsRect& aBorderArea,
const nsStyleSpacing& aBorderStyle,
nsIStyleContext* aStyleContext,
PRIntn aSkipSides,
nsRect* aGap = 0);
/**
* Just like PaintBorder, but takes as input a list of border segments
* rather than a single border style. Useful for any object that needs to
* draw a border where an edge is not necessarily homogenous.
* Render the border for an element using css rendering rules
* for borders. aSkipSides is a bitmask of the sides to skip
* when rendering. If 0 then no sides are skipped.
*
* Both aDirtyRect and aBorderArea are in the local coordinate space
* of aForFrame
*/
static void PaintBorderEdges(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
nsIFrame* aForFrame,
const nsRect& aDirtyRect,
const nsRect& aBorderArea,
nsBorderEdges * aBorderEdges,
nsIStyleContext* aStyleContext,
PRIntn aSkipSides,
nsRect* aGap = 0);
/**
* Render the background for an element using css rendering rules
* for backgrounds.
*
* Both aDirtyRect and aBorderArea are in the local coordinate space
* of aForFrame
*/
static void PaintBackground(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
nsIFrame* aForFrame,
const nsRect& aDirtyRect,
const nsRect& aBorderArea,
const nsStyleColor& aColor,
const nsStyleSpacing& aStyle,
nscoord aDX,
nscoord aDY);
static void DrawDashedSides(PRIntn startSide,
nsIRenderingContext& aContext,
const PRUint8 borderStyles[],
const nscolor borderColors[],
const nsRect& borderOutside,
const nsRect& borderInside,
PRIntn aSkipSides,
nsRect* aGap);
static void DrawDashedSides(PRIntn startSide,
nsIRenderingContext& aContext,
const nsStyleSpacing& aSpacing,
const nsRect& borderOutside,
const nsRect& borderInside,
PRIntn aSkipSides,
nsRect* aGap);
/** draw the dashed segements of a segmented border */
//XXX: boy is it annoying that we have 3 methods to draw dashed sides!
// they clearly can be factored.
static void DrawDashedSegments(nsIRenderingContext& aContext,
const nsRect& aBounds,
nsBorderEdges * aBorderEdges,
PRIntn aSkipSides,
nsRect* aGap);
protected:
static nscolor MakeBevelColor(PRIntn whichSide, PRUint8 style,
nscolor aBackgroundColor,
nscolor aBorderColor,
PRBool aSpecialCase);
static PRIntn MakeSide(nsPoint aPoints[],
nsIRenderingContext& aContext,
PRIntn whichSide,
const nsRect& outside, const nsRect& inside,
PRIntn borderPart, float borderFrac,
nscoord twipsPerPixel);
static void DrawSide(nsIRenderingContext& aContext,
PRIntn whichSide,
const PRUint8 borderStyle,
const nscolor borderColor,
const nscolor aBackgroundColor,
const nsRect& borderOutside,
const nsRect& borderInside,
nscoord twipsPerPixel,
nsRect* aGap = 0);
static void DrawLine (nsIRenderingContext& aContext,
nscoord aX1, nscoord aY1, nscoord aX2, nscoord aY2,
nsRect* aGap);
static void FillPolygon (nsIRenderingContext& aContext,
const nsPoint aPoints[],
PRInt32 aNumPoints,
nsRect* aGap);
};
#endif /* nsCSSRendering_h___ */