/* -*- 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 1.1 (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.mozilla.org/NPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is Netscape * Communications Corporation. Portions created by Netscape are * Copyright (C) 1998 Netscape Communications Corporation. All * Rights Reserved. * * Contributor(s): */ #include "nsCSSRendering.h" #include "nsStyleConsts.h" #include "nsIPresContext.h" #include "nsIImage.h" #include "nsIFrame.h" #include "nsPoint.h" #include "nsRect.h" #include "nsIViewManager.h" #include "nsIPresShell.h" #include "nsIFrameImageLoader.h" #include "nsIStyleContext.h" #include "nsStyleUtil.h" #include "nsIScrollableView.h" #include "nsLayoutAtoms.h" #include "nsIDrawingSurface.h" #include "nsTransform2D.h" #include "nsIDeviceContext.h" #include "nsIContent.h" #include "nsHTMLAtoms.h" #include "nsIDocument.h" #include "nsIScrollableFrame.h" static NS_DEFINE_IID(kScrollViewIID, NS_ISCROLLABLEVIEW_IID); #define BORDER_FULL 0 //entire side #define BORDER_INSIDE 1 //inside half #define BORDER_OUTSIDE 2 //outside half //thickness of dashed line relative to dotted line #define DOT_LENGTH 1 //square #define DASH_LENGTH 3 //3 times longer than dot /** The following classes are used by CSSRendering for the rounded rect implementation */ #define MAXPATHSIZE 12 #define MAXPOLYPATHSIZE 1000 enum ePathTypes{ eOutside =0, eInside, eCalc, eCalcRev }; static void GetPath(nsFloatPoint aPoints[],nsPoint aPolyPath[],PRInt32 *aCurIndex,ePathTypes aPathType,PRInt32 &aC1Index,float aFrac=0); static void TileImage(nsIRenderingContext& aRC,nsDrawingSurface aDS,nsRect &aSrcRect,PRInt16 aWidth,PRInt16 aHeight); static PRBool GetBGColorForHTMLElement(nsIPresContext *aPresContext,const nsStyleColor *&aBGColor); static nsresult GetFrameForBackgroundUpdate(nsIPresContext *aPresContext,nsIFrame *aFrame, nsIFrame **aBGFrame); // Draw a line, skipping that portion which crosses aGap. aGap defines a rectangle gap // This services fieldset legends and only works for coords defining horizontal lines. void nsCSSRendering::DrawLine (nsIRenderingContext& aContext, nscoord aX1, nscoord aY1, nscoord aX2, nscoord aY2, nsRect* aGap) { if (nsnull == aGap) { aContext.DrawLine(aX1, aY1, aX2, aY2); } else { nscoord x1 = (aX1 < aX2) ? aX1 : aX2; nscoord x2 = (aX1 < aX2) ? aX2 : aX1; nsPoint gapUpperRight(aGap->x + aGap->width, aGap->y); nsPoint gapLowerRight(aGap->x + aGap->width, aGap->y + aGap->height); if ((aGap->y <= aY1) && (gapLowerRight.y >= aY2)) { if ((aGap->x > x1) && (aGap->x < x2)) { aContext.DrawLine(x1, aY1, aGap->x, aY1); } if ((gapLowerRight.x > x1) && (gapLowerRight.x < x2)) { aContext.DrawLine(gapUpperRight.x, aY2, x2, aY2); } } else { aContext.DrawLine(aX1, aY1, aX2, aY2); } } } // Fill a polygon, skipping that portion which crosses aGap. aGap defines a rectangle gap // This services fieldset legends and only works for points defining a horizontal rectangle void nsCSSRendering::FillPolygon (nsIRenderingContext& aContext, const nsPoint aPoints[], PRInt32 aNumPoints, nsRect* aGap) { if (nsnull == aGap) { aContext.FillPolygon(aPoints, aNumPoints); } else if (4 == aNumPoints) { nsPoint gapUpperRight(aGap->x + aGap->width, aGap->y); nsPoint gapLowerRight(aGap->x + aGap->width, aGap->y + aGap->height); // sort the 4 points by x nsPoint points[4]; for (PRInt32 pX = 0; pX < 4; pX++) { points[pX] = aPoints[pX]; } for (PRInt32 i = 0; i < 3; i++) { for (PRInt32 j = i+1; j < 4; j++) { if (points[j].x < points[i].x) { nsPoint swap = points[i]; points[i] = points[j]; points[j] = swap; } } } nsPoint upperLeft = (points[0].y <= points[1].y) ? points[0] : points[1]; nsPoint lowerLeft = (points[0].y <= points[1].y) ? points[1] : points[0]; nsPoint upperRight = (points[2].y <= points[3].y) ? points[2] : points[3]; nsPoint lowerRight = (points[2].y <= points[3].y) ? points[3] : points[2]; if ((aGap->y <= upperLeft.y) && (gapLowerRight.y >= lowerRight.y)) { if ((aGap->x > upperLeft.x) && (aGap->x < upperRight.x)) { nsPoint leftRect[4]; leftRect[0] = upperLeft; leftRect[1] = nsPoint(aGap->x, upperLeft.y); leftRect[2] = nsPoint(aGap->x, lowerLeft.y); leftRect[3] = lowerLeft; aContext.FillPolygon(leftRect, 4); } if ((gapUpperRight.x > upperLeft.x) && (gapUpperRight.x < upperRight.x)) { nsPoint rightRect[4]; rightRect[0] = nsPoint(gapUpperRight.x, upperRight.y); rightRect[1] = upperRight; rightRect[2] = lowerRight; rightRect[3] = nsPoint(gapLowerRight.x, lowerRight.y); aContext.FillPolygon(rightRect, 4); } } else { aContext.FillPolygon(aPoints, aNumPoints); } } } /** * Make a bevel color */ nscolor nsCSSRendering::MakeBevelColor(PRIntn whichSide, PRUint8 style, nscolor aBackgroundColor, nscolor aBorderColor, PRBool aSpecialCase) { nscolor colors[2]; nscolor theColor; // Given a background color and a border color // calculate the color used for the shading if(aSpecialCase) NS_GetSpecial3DColors(colors, aBackgroundColor, aBorderColor); else NS_Get3DColors(colors, aBackgroundColor); if ((style == NS_STYLE_BORDER_STYLE_BG_OUTSET) || (style == NS_STYLE_BORDER_STYLE_OUTSET) || (style == NS_STYLE_BORDER_STYLE_RIDGE)) { // Flip colors for these two border style switch (whichSide) { case NS_SIDE_BOTTOM: whichSide = NS_SIDE_TOP; break; case NS_SIDE_RIGHT: whichSide = NS_SIDE_LEFT; break; case NS_SIDE_TOP: whichSide = NS_SIDE_BOTTOM; break; case NS_SIDE_LEFT: whichSide = NS_SIDE_RIGHT; break; } } switch (whichSide) { case NS_SIDE_BOTTOM: theColor = colors[1]; break; case NS_SIDE_RIGHT: theColor = colors[1]; break; case NS_SIDE_TOP: theColor = colors[0]; break; case NS_SIDE_LEFT: default: theColor = colors[0]; break; } return theColor; } // Maximum poly points in any of the polygons we generate below #define MAX_POLY_POINTS 4 // a nifty helper function to create a polygon representing a // particular side of a border. This helps localize code for figuring // mitered edges. It is mainly used by the solid, inset, and outset // styles. // // If the side can be represented as a line segment (because the thickness // is one pixel), then a line with two endpoints is returned PRIntn nsCSSRendering::MakeSide(nsPoint aPoints[], nsIRenderingContext& aContext, PRIntn whichSide, const nsRect& outside, const nsRect& inside, PRIntn aSkipSides, PRIntn borderPart, float borderFrac, nscoord twipsPerPixel) { float borderRest = 1.0f - borderFrac; PRIntn np = 0; nscoord thickness, outsideEdge, insideEdge, outsideTL, insideTL, outsideBR, insideBR; // Initialize the following six nscoord's: // outsideEdge, insideEdge, outsideTL, insideTL, outsideBR, insideBR // so that outsideEdge is the x or y of the outside edge, etc., and // outsideTR is the y or x at the top or right end, etc., e.g.: // // outsideEdge --- ---------------------------------------- // \ / // \ / // \ / // insideEdge ------- ---------------------------------- // | | | | // outsideTL insideTL insideBR outsideBR // // if we don't want the bevel, we'll get rid of it later by setting // outsideXX to insideXX switch (whichSide) { case NS_SIDE_TOP: // the TL points are the left end; the BR points are the right end outsideEdge = outside.y; insideEdge = inside.y; outsideTL = outside.x; insideTL = inside.x; insideBR = inside.XMost(); outsideBR = outside.XMost(); break; case NS_SIDE_BOTTOM: // the TL points are the left end; the BR points are the right end outsideEdge = outside.YMost(); insideEdge = inside.YMost(); outsideTL = outside.x; insideTL = inside.x; insideBR = inside.XMost(); outsideBR = outside.XMost(); break; case NS_SIDE_LEFT: // the TL points are the top end; the BR points are the bottom end outsideEdge = outside.x; insideEdge = inside.x; outsideTL = outside.y; insideTL = inside.y; insideBR = inside.YMost(); outsideBR = outside.YMost(); break; case NS_SIDE_RIGHT: // the TL points are the top end; the BR points are the bottom end outsideEdge = outside.XMost(); insideEdge = inside.XMost(); outsideTL = outside.y; insideTL = inside.y; insideBR = inside.YMost(); outsideBR = outside.YMost(); break; } // Don't draw the bevels if an adjacent side is skipped if ( (whichSide == NS_SIDE_TOP) || (whichSide == NS_SIDE_BOTTOM) ) { // a top or bottom side if ((1<> 2; // find the thickness of the piece being drawn if ((whichSide == NS_SIDE_TOP) || (whichSide == NS_SIDE_LEFT)) { thickness = insideEdge - outsideEdge; } else { thickness = outsideEdge - insideEdge; } // if returning a line, do it along inside edge for bottom or right borders // so that it's in the same place as it would be with polygons (why?) // XXX The previous version of the code shortened the right border too. if ( !((thickness >= twipsPerPixel) || (borderPart != BORDER_FULL)) && ((whichSide == NS_SIDE_BOTTOM) || (whichSide == NS_SIDE_RIGHT))) { outsideEdge = insideEdge; } // return the appropriate line or trapezoid if ((whichSide == NS_SIDE_TOP) || (whichSide == NS_SIDE_BOTTOM)) { // top and bottom borders aPoints[np++].MoveTo(outsideTL,outsideEdge); aPoints[np++].MoveTo(outsideBR,outsideEdge); // XXX Making this condition only (thickness >= twipsPerPixel) will // improve double borders and some cases of groove/ridge, // but will cause problems with table borders. See last and third // from last tests in test4.htm // Doing it this way emulates the old behavior. It might be worth // fixing. if ((thickness >= twipsPerPixel) || (borderPart != BORDER_FULL) ) { aPoints[np++].MoveTo(insideBR,insideEdge); aPoints[np++].MoveTo(insideTL,insideEdge); } } else { // right and left borders // XXX Ditto above if ((thickness >= twipsPerPixel) || (borderPart != BORDER_FULL) ) { aPoints[np++].MoveTo(insideEdge,insideBR); aPoints[np++].MoveTo(insideEdge,insideTL); } aPoints[np++].MoveTo(outsideEdge,outsideTL); aPoints[np++].MoveTo(outsideEdge,outsideBR); } return np; } void nsCSSRendering::DrawSide(nsIRenderingContext& aContext, PRIntn whichSide, const PRUint8 borderStyle, const nscolor borderColor, const nscolor aBackgroundColor, const nsRect& borderOutside, const nsRect& borderInside, PRIntn aSkipSides, nscoord twipsPerPixel, nsRect* aGap) { nsPoint theSide[MAX_POLY_POINTS]; nscolor theColor = borderColor; PRUint8 theStyle = borderStyle; PRInt32 np; switch (theStyle) { case NS_STYLE_BORDER_STYLE_NONE: case NS_STYLE_BORDER_STYLE_HIDDEN: case NS_STYLE_BORDER_STYLE_BLANK: return; case NS_STYLE_BORDER_STYLE_DOTTED: //handled a special case elsewhere case NS_STYLE_BORDER_STYLE_DASHED: //handled a special case elsewhere break; // That was easy... case NS_STYLE_BORDER_STYLE_GROOVE: case NS_STYLE_BORDER_STYLE_RIDGE: np = MakeSide (theSide, aContext, whichSide, borderOutside, borderInside, aSkipSides, BORDER_INSIDE, 0.5f, twipsPerPixel); aContext.SetColor ( MakeBevelColor (whichSide, ((theStyle == NS_STYLE_BORDER_STYLE_RIDGE) ? NS_STYLE_BORDER_STYLE_GROOVE : NS_STYLE_BORDER_STYLE_RIDGE), aBackgroundColor, theColor, PR_TRUE)); if (2 == np) { //aContext.DrawLine (theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y); DrawLine (aContext, theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y, aGap); } else { //aContext.FillPolygon (theSide, np); FillPolygon (aContext, theSide, np, aGap); } np = MakeSide (theSide, aContext, whichSide, borderOutside, borderInside,aSkipSides, BORDER_OUTSIDE, 0.5f, twipsPerPixel); aContext.SetColor ( MakeBevelColor (whichSide, theStyle, aBackgroundColor, theColor, PR_TRUE)); if (2 == np) { //aContext.DrawLine (theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y); DrawLine (aContext, theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y, aGap); } else { //aContext.FillPolygon (theSide, np); FillPolygon (aContext, theSide, np, aGap); } break; case NS_STYLE_BORDER_STYLE_SOLID: np = MakeSide (theSide, aContext, whichSide, borderOutside, borderInside,aSkipSides, BORDER_FULL, 1.0f, twipsPerPixel); aContext.SetColor (borderColor); if (2 == np) { //aContext.DrawLine (theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y); DrawLine (aContext, theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y, aGap); } else { //aContext.FillPolygon (theSide, np); FillPolygon (aContext, theSide, np, aGap); } break; case NS_STYLE_BORDER_STYLE_DOUBLE: np = MakeSide (theSide, aContext, whichSide, borderOutside, borderInside,aSkipSides, BORDER_INSIDE, 0.333333f, twipsPerPixel); aContext.SetColor (borderColor); if (2 == np) { //aContext.DrawLine (theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y); DrawLine (aContext, theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y, aGap); } else { //aContext.FillPolygon (theSide, np); FillPolygon (aContext, theSide, np, aGap); } np = MakeSide (theSide, aContext, whichSide, borderOutside, borderInside,aSkipSides, BORDER_OUTSIDE, 0.333333f, twipsPerPixel); if (2 == np) { //aContext.DrawLine (theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y); DrawLine (aContext, theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y, aGap); } else { //aContext.FillPolygon (theSide, np); FillPolygon (aContext, theSide, np, aGap); } break; case NS_STYLE_BORDER_STYLE_BG_OUTSET: case NS_STYLE_BORDER_STYLE_BG_INSET: np = MakeSide (theSide, aContext, whichSide, borderOutside, borderInside,aSkipSides, BORDER_FULL, 1.0f, twipsPerPixel); aContext.SetColor ( MakeBevelColor (whichSide, theStyle, aBackgroundColor, theColor, PR_FALSE)); if (2 == np) { //aContext.DrawLine (theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y); DrawLine (aContext, theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y, aGap); } else { //aContext.FillPolygon (theSide, np); FillPolygon (aContext, theSide, np, aGap); } break; case NS_STYLE_BORDER_STYLE_OUTSET: case NS_STYLE_BORDER_STYLE_INSET: np = MakeSide (theSide, aContext, whichSide, borderOutside, borderInside,aSkipSides, BORDER_FULL, 1.0f, twipsPerPixel); aContext.SetColor ( MakeBevelColor (whichSide, theStyle, aBackgroundColor, theColor, PR_TRUE)); if (2 == np) { //aContext.DrawLine (theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y); DrawLine (aContext, theSide[0].x, theSide[0].y, theSide[1].x, theSide[1].y, aGap); } else { //aContext.FillPolygon (theSide, np); FillPolygon (aContext, theSide, np, aGap); } break; } } /** * Draw a dotted/dashed sides of a box */ //XXX dashes which span more than two edges are not handled properly MMP void nsCSSRendering::DrawDashedSides(PRIntn startSide, nsIRenderingContext& aContext, const nsRect& aDirtyRect, const PRUint8 borderStyles[], const nscolor borderColors[], const nsRect& borderOutside, const nsRect& borderInside, PRIntn aSkipSides, nsRect* aGap) { PRIntn dashLength; nsRect dashRect, firstRect, currRect; PRBool bSolid = PR_TRUE; float over = 0.0f; PRUint8 style = borderStyles[startSide]; PRBool skippedSide = PR_FALSE; nscoord xstart,xwidth,ystart,ywidth; // find out were x and y start if(aDirtyRect.x > borderInside.x) { xstart = aDirtyRect.x; } else { xstart = borderInside.x; } if(aDirtyRect.y > borderInside.y) { ystart = aDirtyRect.y; } else { ystart = aDirtyRect.y; } // find the x and y width xwidth = aDirtyRect.XMost(); ywidth = aDirtyRect.YMost(); for (PRIntn whichSide = startSide; whichSide < 4; whichSide++) { PRUint8 prevStyle = style; style = borderStyles[whichSide]; if ((1< 0.0f) { firstRect.x = dashRect.x; firstRect.width = dashRect.width; firstRect.height = nscoord(dashRect.height * over); firstRect.y = dashRect.y + (dashRect.height - firstRect.height); over = 0.0f; currRect = firstRect; } else { currRect = dashRect; } while (currRect.YMost() > borderInside.y) { //clip if necessary if (currRect.y < borderInside.y) { over = float(borderInside.y - dashRect.y) / float(dashRect.height); currRect.height = currRect.height - (borderInside.y - currRect.y); currRect.y = borderInside.y; } //draw if necessary if (bSolid) { aContext.FillRect(currRect); } //setup for next iteration if (over == 0.0f) { bSolid = PRBool(!bSolid); } dashRect.y = dashRect.y - currRect.height; currRect = dashRect; } break; case NS_SIDE_TOP: //if we are continuing a solid rect, fill in the corner first if (bSolid) { aContext.FillRect(borderOutside.x, borderOutside.y, borderInside.x - borderOutside.x, borderInside.y - borderOutside.y); } dashRect.height = borderInside.y - borderOutside.y; dashRect.width = dashRect.height * dashLength; dashRect.x = borderInside.x; dashRect.y = borderOutside.y; if (over > 0.0f) { firstRect.x = dashRect.x; firstRect.y = dashRect.y; firstRect.width = nscoord(dashRect.width * over); firstRect.height = dashRect.height; over = 0.0f; currRect = firstRect; } else { currRect = dashRect; } while (currRect.x < borderInside.XMost()) { //clip if necessary if (currRect.XMost() > borderInside.XMost()) { over = float(dashRect.XMost() - borderInside.XMost()) / float(dashRect.width); currRect.width = currRect.width - (currRect.XMost() - borderInside.XMost()); } //draw if necessary if (bSolid) { aContext.FillRect(currRect); } //setup for next iteration if (over == 0.0f) { bSolid = PRBool(!bSolid); } dashRect.x = dashRect.x + currRect.width; currRect = dashRect; } break; case NS_SIDE_RIGHT: //if we are continuing a solid rect, fill in the corner first if (bSolid) { aContext.FillRect(borderInside.XMost(), borderOutside.y, borderOutside.XMost() - borderInside.XMost(), borderInside.y - borderOutside.y); } dashRect.width = borderOutside.XMost() - borderInside.XMost(); dashRect.height = nscoord(dashRect.width * dashLength); dashRect.x = borderInside.XMost(); dashRect.y = borderInside.y; if (over > 0.0f) { firstRect.x = dashRect.x; firstRect.y = dashRect.y; firstRect.width = dashRect.width; firstRect.height = nscoord(dashRect.height * over); over = 0.0f; currRect = firstRect; } else { currRect = dashRect; } while (currRect.y < borderInside.YMost()) { //clip if necessary if (currRect.YMost() > borderInside.YMost()) { over = float(dashRect.YMost() - borderInside.YMost()) / float(dashRect.height); currRect.height = currRect.height - (currRect.YMost() - borderInside.YMost()); } //draw if necessary if (bSolid) { aContext.FillRect(currRect); } //setup for next iteration if (over == 0.0f) { bSolid = PRBool(!bSolid); } dashRect.y = dashRect.y + currRect.height; currRect = dashRect; } break; case NS_SIDE_BOTTOM: //if we are continuing a solid rect, fill in the corner first if (bSolid) { aContext.FillRect(borderInside.XMost(), borderInside.YMost(), borderOutside.XMost() - borderInside.XMost(), borderOutside.YMost() - borderInside.YMost()); } dashRect.height = borderOutside.YMost() - borderInside.YMost(); dashRect.width = nscoord(dashRect.height * dashLength); dashRect.x = borderInside.XMost() - dashRect.width; dashRect.y = borderInside.YMost(); if (over > 0.0f) { firstRect.y = dashRect.y; firstRect.width = nscoord(dashRect.width * over); firstRect.height = dashRect.height; firstRect.x = dashRect.x + (dashRect.width - firstRect.width); over = 0.0f; currRect = firstRect; } else { currRect = dashRect; } while (currRect.XMost() > borderInside.x) { //clip if necessary if (currRect.x < borderInside.x) { over = float(borderInside.x - dashRect.x) / float(dashRect.width); currRect.width = currRect.width - (borderInside.x - currRect.x); currRect.x = borderInside.x; } //draw if necessary if (bSolid) { aContext.FillRect(currRect); } //setup for next iteration if (over == 0.0f) { bSolid = PRBool(!bSolid); } dashRect.x = dashRect.x - currRect.width; currRect = dashRect; } break; } } skippedSide = PR_FALSE; } } /** --------------------------------------------------- * See documentation in nsCSSRendering.h * @update 10/22/99 dwc */ void nsCSSRendering::DrawDashedSides(PRIntn startSide, nsIRenderingContext& aContext, const nsRect& aDirtyRect, const nsStyleSpacing& aSpacing, PRBool aDoOutline, const nsRect& borderOutside, const nsRect& borderInside, PRIntn aSkipSides, nsRect* aGap) { PRIntn dashLength; nsRect dashRect, currRect; nscoord xstart,xwidth,ystart,ywidth,temp,temp1,adjust; PRBool bSolid = PR_TRUE; float over = 0.0f; PRUint8 style = aDoOutline?aSpacing.GetOutlineStyle():aSpacing.GetBorderStyle(startSide); PRBool skippedSide = PR_FALSE; // find out were x and y start if(aDirtyRect.x > borderInside.x) { xstart = aDirtyRect.x; } else { xstart = borderInside.x; } if(aDirtyRect.y > borderInside.y) { ystart = aDirtyRect.y; } else { ystart = borderInside.y; } // find the x and y width xwidth = aDirtyRect.XMost(); ywidth = aDirtyRect.YMost(); for (PRIntn whichSide = startSide; whichSide < 4; whichSide++) { PRUint8 prevStyle = style; style = aDoOutline?aSpacing.GetOutlineStyle():aSpacing.GetBorderStyle(whichSide); if ((1<0 ) { dashRect.height = dashRect.width * dashLength; dashRect.y = borderOutside.y; if(whichSide == NS_SIDE_RIGHT){ dashRect.x = borderInside.XMost(); } else { dashRect.x = borderOutside.x; } temp = borderOutside.YMost(); temp1 = temp/dashRect.height; currRect = dashRect; if((temp1%2)==0){ adjust = (dashRect.height-(temp%dashRect.height))/2; // adjust back // draw in the left and right aContext.FillRect(dashRect.x, borderOutside.y,dashRect.width, dashRect.height-adjust); aContext.FillRect(dashRect.x,(borderOutside.YMost()-(dashRect.height-adjust)),dashRect.width, dashRect.height-adjust); currRect.y += (dashRect.height-adjust); temp = temp-= (dashRect.height-adjust); } else { adjust = (temp%dashRect.width)/2; // adjust a tad longer // draw in the left and right aContext.FillRect(dashRect.x, borderOutside.y,dashRect.width, dashRect.height+adjust); aContext.FillRect(dashRect.x,(borderOutside.YMost()-(dashRect.height+adjust)),dashRect.width, dashRect.height+adjust); currRect.y += (dashRect.height+adjust); temp = temp-= (dashRect.height+adjust); } if( temp > ywidth) temp = ywidth; // get the currRect's x into the view before we start if( currRect.y < aDirtyRect.y){ temp1 = NSToCoordFloor((float)((aDirtyRect.y-currRect.y)/dashRect.height)); currRect.y += temp1*dashRect.height; if((temp1%2)==1){ bSolid = PR_TRUE; } } while(currRect.y0 ) { dashRect.width = dashRect.height * dashLength; dashRect.x = borderOutside.x; if(whichSide == NS_SIDE_BOTTOM){ dashRect.y = borderInside.YMost(); } else { dashRect.y = borderOutside.y; } temp = borderOutside.XMost(); temp1 = temp/dashRect.width; currRect = dashRect; if((temp1%2)==0){ adjust = (dashRect.width-(temp%dashRect.width))/2; // even, adjust back // draw in the left and right aContext.FillRect(borderOutside.x,dashRect.y,dashRect.width-adjust,dashRect.height); aContext.FillRect((borderOutside.XMost()-(dashRect.width-adjust)),dashRect.y,dashRect.width-adjust,dashRect.height); currRect.x += (dashRect.width-adjust); temp = temp-= (dashRect.width-adjust); } else { adjust = (temp%dashRect.width)/2; // draw in the left and right aContext.FillRect(borderOutside.x,dashRect.y,dashRect.width+adjust,dashRect.height); aContext.FillRect((borderOutside.XMost()-(dashRect.width+adjust)),dashRect.y,dashRect.width+adjust,dashRect.height); currRect.x += (dashRect.width+adjust); temp = temp-= (dashRect.width+adjust); } if( temp > xwidth) temp = xwidth; // get the currRect's x into the view before we start if( currRect.x < aDirtyRect.x){ temp1 = NSToCoordFloor((float)((aDirtyRect.x-currRect.x)/dashRect.width)); currRect.x += temp1*dashRect.width; if((temp1%2)==1){ bSolid = PR_TRUE; } } while(currRect.xmEdges[whichSide].ElementAt(0)); PRUint8 style = segment->mStyle; for ( ; whichSide < 4; whichSide++) { if ((1<mEdges[whichSide].Count(); nsBorderEdges * neighborBorderEdges=nsnull; PRIntn neighborEdgeCount=0; // keeps track of which inside neighbor is shared with an outside segment for (i=0; imEdges[whichSide].ElementAt(i)); style = segment->mStyle; // XXX units for dash & dot? if (style == NS_STYLE_BORDER_STYLE_DASHED) { dashLength = DASH_LENGTH; } else { dashLength = DOT_LENGTH; } aContext.SetColor(segment->mColor); switch (whichSide) { case NS_SIDE_LEFT: { // draw left segment i nsBorderEdge * topEdge = (nsBorderEdge *)(aBorderEdges->mEdges[NS_SIDE_TOP].ElementAt(0)); if (0==y) { // y is the offset to the top of this segment. 0 means its the topmost left segment y = aBorderEdges->mMaxBorderWidth.top - topEdge->mWidth; if (PR_TRUE==aBorderEdges->mOutsideEdge) y += topEdge->mWidth; } // the x offset is the x position offset by the max width of the left edge minus this segment's width x = aBounds.x + (aBorderEdges->mMaxBorderWidth.left - segment->mWidth); nscoord height = segment->mLength; // the space between borderOutside and borderInside inclusive is the segment. nsRect borderOutside(x, y, aBounds.width, height); y += segment->mLength; // keep track of the y offset for the next segment if ((style == NS_STYLE_BORDER_STYLE_DASHED) || (style == NS_STYLE_BORDER_STYLE_DOTTED)) { nsRect borderInside(borderOutside); nsMargin outsideMargin(segment->mWidth, 0, 0, 0); borderInside.Deflate(outsideMargin); nscoord totalLength = segment->mLength; // the computed length of this segment // outside edges need info from their inside neighbor. The following code keeps track // of which segment of the inside neighbor's shared edge we should use for this outside segment if (PR_TRUE==aBorderEdges->mOutsideEdge) { if (segment->mInsideNeighbor == neighborBorderEdges) { neighborEdgeCount++; } else { neighborBorderEdges = segment->mInsideNeighbor; neighborEdgeCount=0; } nsBorderEdge * neighborLeft = (nsBorderEdge *)(segment->mInsideNeighbor->mEdges[NS_SIDE_LEFT].ElementAt(neighborEdgeCount)); totalLength = neighborLeft->mLength; } dashRect.width = borderInside.x - borderOutside.x; dashRect.height = nscoord(dashRect.width * dashLength); dashRect.x = borderOutside.x; dashRect.y = borderOutside.y + (totalLength/2) - dashRect.height; if ((PR_TRUE==aBorderEdges->mOutsideEdge) && (0!=i)) dashRect.y -= topEdge->mWidth; // account for the topmost left edge corner with the leftmost top edge if (0) { printf(" L: totalLength = %d, borderOutside.y = %d, midpoint %d, dashRect.y = %d\n", totalLength, borderOutside.y, borderOutside.y +(totalLength/2), dashRect.y); } currRect = dashRect; // we draw the segment in 2 halves to get the inside and outside edges to line up on the // centerline of the shared edge. // draw the top half while (currRect.YMost() > borderInside.y) { //clip if necessary if (currRect.y < borderInside.y) { over = float(borderInside.y - dashRect.y) / float(dashRect.height); currRect.height = currRect.height - (borderInside.y - currRect.y); currRect.y = borderInside.y; } //draw if necessary if (0) { printf("DASHED LEFT: xywh in loop currRect = %d %d %d %d %s\n", currRect.x, currRect.y, currRect.width, currRect.height, bSolid?"TRUE":"FALSE"); } if (bSolid) { aContext.FillRect(currRect); } //setup for next iteration if (over == 0.0f) { bSolid = PRBool(!bSolid); } dashRect.y = dashRect.y - currRect.height; currRect = dashRect; } // draw the bottom half dashRect.y = borderOutside.y + (totalLength/2) + dashRect.height; if ((PR_TRUE==aBorderEdges->mOutsideEdge) && (0!=i)) dashRect.y -= topEdge->mWidth; currRect = dashRect; bSolid=PR_TRUE; over = 0.0f; while (currRect.YMost() < borderInside.YMost()) { //clip if necessary if (currRect.y < borderInside.y) { over = float(borderInside.y - dashRect.y) / float(dashRect.height); currRect.height = currRect.height - (borderInside.y - currRect.y); currRect.y = borderInside.y; } //draw if necessary if (0) { printf("DASHED LEFT: xywh in loop currRect = %d %d %d %d %s\n", currRect.x, currRect.y, currRect.width, currRect.height, bSolid?"TRUE":"FALSE"); } if (bSolid) { aContext.FillRect(currRect); } //setup for next iteration if (over == 0.0f) { bSolid = PRBool(!bSolid); } dashRect.y = dashRect.y + currRect.height; currRect = dashRect; } } } break; case NS_SIDE_TOP: { // draw top segment i if (0==x) { nsBorderEdge * leftEdge = (nsBorderEdge *)(aBorderEdges->mEdges[NS_SIDE_LEFT].ElementAt(0)); x = aBorderEdges->mMaxBorderWidth.left - leftEdge->mWidth; } y = aBounds.y; if (PR_TRUE==aBorderEdges->mOutsideEdge) // segments of the outside edge are bottom-aligned y += aBorderEdges->mMaxBorderWidth.top - segment->mWidth; nsRect borderOutside(x, y, segment->mLength, aBounds.height); x += segment->mLength; if ((style == NS_STYLE_BORDER_STYLE_DASHED) || (style == NS_STYLE_BORDER_STYLE_DOTTED)) { nsRect borderInside(borderOutside); nsBorderEdge * neighbor; if (PR_TRUE==aBorderEdges->mOutsideEdge) neighbor = (nsBorderEdge *)(segment->mInsideNeighbor->mEdges[NS_SIDE_LEFT].ElementAt(0)); else neighbor = (nsBorderEdge *)(aBorderEdges->mEdges[NS_SIDE_LEFT].ElementAt(0)); nsMargin outsideMargin(neighbor->mWidth, segment->mWidth, 0, segment->mWidth); borderInside.Deflate(outsideMargin); nscoord firstRectWidth = 0; if (PR_TRUE==aBorderEdges->mOutsideEdge && 0==i) { firstRectWidth = borderInside.x - borderOutside.x; aContext.FillRect(borderOutside.x, borderOutside.y, firstRectWidth, borderInside.y - borderOutside.y); } dashRect.height = borderInside.y - borderOutside.y; dashRect.width = dashRect.height * dashLength; dashRect.x = borderOutside.x + firstRectWidth; dashRect.y = borderOutside.y; currRect = dashRect; while (currRect.x < borderInside.XMost()) { //clip if necessary if (currRect.XMost() > borderInside.XMost()) { over = float(dashRect.XMost() - borderInside.XMost()) / float(dashRect.width); currRect.width = currRect.width - (currRect.XMost() - borderInside.XMost()); } //draw if necessary if (bSolid) { aContext.FillRect(currRect); } //setup for next iteration if (over == 0.0f) { bSolid = PRBool(!bSolid); } dashRect.x = dashRect.x + currRect.width; currRect = dashRect; } } } break; case NS_SIDE_RIGHT: { // draw right segment i nsBorderEdge * topEdge = (nsBorderEdge *) (aBorderEdges->mEdges[NS_SIDE_TOP].ElementAt(aBorderEdges->mEdges[NS_SIDE_TOP].Count()-1)); if (0==y) { y = aBorderEdges->mMaxBorderWidth.top - topEdge->mWidth; if (PR_TRUE==aBorderEdges->mOutsideEdge) y += topEdge->mWidth; } nscoord width; if (PR_TRUE==aBorderEdges->mOutsideEdge) { width = aBounds.width - aBorderEdges->mMaxBorderWidth.right; width += segment->mWidth; } else { width = aBounds.width; } nscoord height = segment->mLength; nsRect borderOutside(aBounds.x, y, width, height); y += segment->mLength; if ((style == NS_STYLE_BORDER_STYLE_DASHED) || (style == NS_STYLE_BORDER_STYLE_DOTTED)) { nsRect borderInside(borderOutside); nsMargin outsideMargin(segment->mWidth, 0, (segment->mWidth), 0); borderInside.Deflate(outsideMargin); nscoord totalLength = segment->mLength; if (PR_TRUE==aBorderEdges->mOutsideEdge) { if (segment->mInsideNeighbor == neighborBorderEdges) { neighborEdgeCount++; } else { neighborBorderEdges = segment->mInsideNeighbor; neighborEdgeCount=0; } nsBorderEdge * neighborRight = (nsBorderEdge *)(segment->mInsideNeighbor->mEdges[NS_SIDE_RIGHT].ElementAt(neighborEdgeCount)); totalLength = neighborRight->mLength; } dashRect.width = borderOutside.XMost() - borderInside.XMost(); dashRect.height = nscoord(dashRect.width * dashLength); dashRect.x = borderInside.XMost(); dashRect.y = borderOutside.y + (totalLength/2) - dashRect.height; if ((PR_TRUE==aBorderEdges->mOutsideEdge) && (0!=i)) dashRect.y -= topEdge->mWidth; currRect = dashRect; // draw the top half while (currRect.YMost() > borderInside.y) { //clip if necessary if (currRect.y < borderInside.y) { over = float(borderInside.y - dashRect.y) / float(dashRect.height); currRect.height = currRect.height - (borderInside.y - currRect.y); currRect.y = borderInside.y; } //draw if necessary if (bSolid) { aContext.FillRect(currRect); } //setup for next iteration if (over == 0.0f) { bSolid = PRBool(!bSolid); } dashRect.y = dashRect.y - currRect.height; currRect = dashRect; } // draw the bottom half dashRect.y = borderOutside.y + (totalLength/2) + dashRect.height; if ((PR_TRUE==aBorderEdges->mOutsideEdge) && (0!=i)) dashRect.y -= topEdge->mWidth; currRect = dashRect; bSolid=PR_TRUE; over = 0.0f; while (currRect.YMost() < borderInside.YMost()) { //clip if necessary if (currRect.y < borderInside.y) { over = float(borderInside.y - dashRect.y) / float(dashRect.height); currRect.height = currRect.height - (borderInside.y - currRect.y); currRect.y = borderInside.y; } //draw if necessary if (bSolid) { aContext.FillRect(currRect); } //setup for next iteration if (over == 0.0f) { bSolid = PRBool(!bSolid); } dashRect.y = dashRect.y + currRect.height; currRect = dashRect; } } } break; case NS_SIDE_BOTTOM: { // draw bottom segment i if (0==x) { nsBorderEdge * leftEdge = (nsBorderEdge *) (aBorderEdges->mEdges[NS_SIDE_LEFT].ElementAt(aBorderEdges->mEdges[NS_SIDE_LEFT].Count()-1)); x = aBorderEdges->mMaxBorderWidth.left - leftEdge->mWidth; } y = aBounds.y; if (PR_TRUE==aBorderEdges->mOutsideEdge) // segments of the outside edge are top-aligned y -= aBorderEdges->mMaxBorderWidth.bottom - segment->mWidth; nsRect borderOutside(x, y, segment->mLength, aBounds.height); x += segment->mLength; if ((style == NS_STYLE_BORDER_STYLE_DASHED) || (style == NS_STYLE_BORDER_STYLE_DOTTED)) { nsRect borderInside(borderOutside); nsBorderEdge * neighbor; if (PR_TRUE==aBorderEdges->mOutsideEdge) neighbor = (nsBorderEdge *)(segment->mInsideNeighbor->mEdges[NS_SIDE_LEFT].ElementAt(0)); else neighbor = (nsBorderEdge *)(aBorderEdges->mEdges[NS_SIDE_LEFT].ElementAt(0)); nsMargin outsideMargin(neighbor->mWidth, segment->mWidth, 0, segment->mWidth); borderInside.Deflate(outsideMargin); nscoord firstRectWidth = 0; if (PR_TRUE==aBorderEdges->mOutsideEdge && 0==i) { firstRectWidth = borderInside.x - borderOutside.x; aContext.FillRect(borderOutside.x, borderInside.YMost(), firstRectWidth, borderOutside.YMost() - borderInside.YMost()); } dashRect.height = borderOutside.YMost() - borderInside.YMost(); dashRect.width = nscoord(dashRect.height * dashLength); dashRect.x = borderOutside.x + firstRectWidth; dashRect.y = borderInside.YMost(); currRect = dashRect; while (currRect.x < borderInside.XMost()) { //clip if necessary if (currRect.XMost() > borderInside.XMost()) { over = float(dashRect.XMost() - borderInside.XMost()) / float(dashRect.width); currRect.width = currRect.width - (currRect.XMost() - borderInside.XMost()); } //draw if necessary if (bSolid) { aContext.FillRect(currRect); } //setup for next iteration if (over == 0.0f) { bSolid = PRBool(!bSolid); } dashRect.x = dashRect.x + currRect.width; currRect = dashRect; } } } break; } } skippedSide = PR_FALSE; } } // method GetBGColorForHTMLElement // // Now here's a *fun* hack: Nav4 uses the BODY element's background color for the // background color on tables so we need to find that element's // color and use it... Actually, we can use the HTML element as well. // // Traverse from PresContext to PresShell to Document to RootContent. The RootContent is // then checked to ensure that it is the HTML or BODY element, and if it is, we get // it's primary frame and from that the style context and from that the color to use. // PRBool GetBGColorForHTMLElement( nsIPresContext *aPresContext, const nsStyleColor *&aBGColor ) { NS_ASSERTION(aPresContext, "null params not allowed"); PRBool result = PR_FALSE; // assume we did not find the HTML element nsIPresShell* shell = nsnull; aPresContext->GetShell(&shell); if (shell) { nsIDocument *doc = nsnull; if (NS_SUCCEEDED(shell->GetDocument(&doc)) && doc) { nsIContent *pContent = doc->GetRootContent(); if (pContent) { // make sure that this is the HTML element nsIAtom *tag = nsnull; pContent->GetTag(tag); NS_ASSERTION(tag, "Tag could not be retrieved from root content element"); if (tag) { if (tag == nsHTMLAtoms::html || tag == nsHTMLAtoms::body) { // use this guy's color nsIFrame *pFrame = nsnull; if (NS_SUCCEEDED(shell->GetPrimaryFrameFor(pContent, &pFrame)) && pFrame) { nsIStyleContext *pContext = nsnull; pFrame->GetStyleContext(&pContext); if (pContext) { const nsStyleColor* color = (const nsStyleColor*)pContext->GetStyleData(eStyleStruct_Color); NS_ASSERTION(color,"ColorStyleData should not be null"); if (0 == (color->mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT)) { aBGColor = color; // set the reslt to TRUE to indicate we mapped the color result = PR_TRUE; } NS_RELEASE(pContext); }// if context }// if frame }// if tag == html or body #ifdef DEBUG else { printf( "Root Content is not HTML or BODY: cannot get bgColor of HTML or BODY\n"); } #endif NS_RELEASE(tag); }// if tag NS_RELEASE(pContent); }// if content NS_RELEASE(doc); }// if doc NS_RELEASE(shell); } // if shell return result; } // nethod GetFrameForBackgroundUpdate // // If the frame (aFrame) is the HTML or BODY frame then find the canvas frame and set the // aBGFrame param to that. This is used when we need a frame to invalidate after an asynch // image load for the background. // // The check is a bit expensive, however until the canvas frame is somehow cached on the // body frame, or the root element, we need to walk the frames up until we find the canvas // nsresult GetFrameForBackgroundUpdate(nsIPresContext *aPresContext,nsIFrame *aFrame, nsIFrame **aBGFrame) { NS_ASSERTION(aFrame && aBGFrame, "illegal null parameter"); nsresult rv = NS_OK; if (aFrame && aBGFrame) { *aBGFrame = aFrame; // default to the frame passed in nsCOMPtr pContent; aFrame->GetContent(getter_AddRefs(pContent)); if (pContent) { // make sure that this is the HTML or BODY element nsCOMPtr tag; pContent->GetTag(*(getter_AddRefs(tag))); if (tag) { if (tag.get() == nsHTMLAtoms::html || tag.get() == nsHTMLAtoms::body) { // the frame is the body frame, so we provide the canvas frame nsIFrame *pCanvasFrame = nsnull; aFrame->GetParent(&pCanvasFrame); while (pCanvasFrame) { nsCOMPtr parentType; pCanvasFrame->GetFrameType(getter_AddRefs(parentType)); if (parentType.get() == nsLayoutAtoms::canvasFrame) { *aBGFrame = pCanvasFrame; break; } pCanvasFrame->GetParent(&pCanvasFrame); } }// if tag == html or body }// if tag } } else { rv = NS_ERROR_NULL_POINTER; } return rv; } // helper macro to determine if the borderstyle 'a' is a MOZ-BG-XXX style #define MOZ_BG_BORDER(a)\ ((a==NS_STYLE_BORDER_STYLE_BG_INSET) || (a==NS_STYLE_BORDER_STYLE_BG_OUTSET)) // XXX improve this to constrain rendering to the damaged area void nsCSSRendering::PaintBorder(nsIPresContext* aPresContext, nsIRenderingContext& aRenderingContext, nsIFrame* aForFrame, const nsRect& aDirtyRect, const nsRect& aBorderArea, const nsStyleSpacing& aBorderStyle, nsIStyleContext* aStyleContext, PRIntn aSkipSides, nsRect* aGap, nscoord aHardBorderSize, PRBool aShouldIgnoreRounded) { PRIntn cnt; nsMargin border; nsStyleCoord bordStyleRadius[4]; PRInt16 borderRadii[4],i; float percent; nsCompatibility compatMode; aPresContext->GetCompatibilityMode(&compatMode); // in NavQuirks mode we want to use the parent's context as a starting point // for determining the background color const nsStyleColor* bgColor = nsStyleUtil::FindNonTransparentBackground(aStyleContext, compatMode == eCompatibility_NavQuirks ? PR_TRUE : PR_FALSE); // mozBGColor is used instead of bgColor when the display type is BG_INSET or BG_OUTSET // AND, in quirk mode, it is set to the BODY element's background color instead of the nearest // ancestor's background color. const nsStyleColor* mozBGColor = bgColor; // now check if we are in Quirks mode and have a border style of BG_INSET or OUTSET // - if so we use the bgColor from the HTML element instead of the nearest ancestor if (compatMode == eCompatibility_NavQuirks) { PRBool bNeedBodyBGColor = PR_FALSE; if (aStyleContext) { for (cnt=0; cnt<4;cnt++) { bNeedBodyBGColor = MOZ_BG_BORDER(aBorderStyle.GetBorderStyle(cnt)); if (bNeedBodyBGColor) { break; } } } if (bNeedBodyBGColor) { GetBGColorForHTMLElement(aPresContext, mozBGColor); } } if (aHardBorderSize > 0) { border.SizeTo(aHardBorderSize, aHardBorderSize, aHardBorderSize, aHardBorderSize); } else { aBorderStyle.CalcBorderFor(aForFrame, border); } if ((0 == border.left) && (0 == border.right) && (0 == border.top) && (0 == border.bottom)) { // Empty border area return; } // get the radius for our border aBorderStyle.mBorderRadius.GetTop(bordStyleRadius[0]); //topleft aBorderStyle.mBorderRadius.GetRight(bordStyleRadius[1]); //topright aBorderStyle.mBorderRadius.GetBottom(bordStyleRadius[2]); //bottomright aBorderStyle.mBorderRadius.GetLeft(bordStyleRadius[3]); //bottomleft for(i=0;i<4;i++) { borderRadii[i] = 0; switch ( bordStyleRadius[i].GetUnit()) { case eStyleUnit_Inherit: break; case eStyleUnit_Percent: percent = bordStyleRadius[i].GetPercentValue(); borderRadii[i] = (nscoord)(percent * aBorderArea.width); break; case eStyleUnit_Coord: borderRadii[i] = bordStyleRadius[i].GetCoordValue(); break; default: break; } } // rounded version of the outline // check for any corner that is rounded for(i=0;i<4;i++){ if(borderRadii[i] > 0){ PaintRoundedBorder(aPresContext,aRenderingContext,aForFrame,aDirtyRect,aBorderArea,aBorderStyle,aStyleContext,aSkipSides,borderRadii,aGap,PR_FALSE); return; } } // Turn off rendering for all of the zero sized sides if (0 == border.top) aSkipSides |= (1 << NS_SIDE_TOP); if (0 == border.right) aSkipSides |= (1 << NS_SIDE_RIGHT); if (0 == border.bottom) aSkipSides |= (1 << NS_SIDE_BOTTOM); if (0 == border.left) aSkipSides |= (1 << NS_SIDE_LEFT); // XXX These are misnamed. Why is it that 'outside' is inside of // 'inside' (it's produced by deflating)? nsRect inside(aBorderArea); nsRect outside(inside); outside.Deflate(border); // If the dirty rect is completely inside the border area (e.g., only the // content is being painted), then we can skip out now if (outside.Contains(aDirtyRect)) { return; } //see if any sides are dotted or dashed for (cnt = 0; cnt < 4; cnt++) { if ((aBorderStyle.GetBorderStyle(cnt) == NS_STYLE_BORDER_STYLE_DOTTED) || (aBorderStyle.GetBorderStyle(cnt) == NS_STYLE_BORDER_STYLE_DASHED)) { break; } } if (cnt < 4) { DrawDashedSides(cnt, aRenderingContext,aDirtyRect,aBorderStyle, PR_FALSE, inside, outside, aSkipSides, aGap); } // Draw all the other sides /* Get our conversion values */ nscoord twipsPerPixel; float p2t; aPresContext->GetScaledPixelsToTwips(&p2t); twipsPerPixel = NSIntPixelsToTwips(1,p2t); nscolor sideColor; if (0 == (aSkipSides & (1<mBackgroundColor : bgColor->mBackgroundColor, inside,outside, aSkipSides, twipsPerPixel, aGap); } } if (0 == (aSkipSides & (1<mBackgroundColor : bgColor->mBackgroundColor, inside, outside,aSkipSides, twipsPerPixel, aGap); } } if (0 == (aSkipSides & (1<mBackgroundColor : bgColor->mBackgroundColor, inside, outside,aSkipSides, twipsPerPixel, aGap); } } if (0 == (aSkipSides & (1<mBackgroundColor : bgColor->mBackgroundColor, inside, outside,aSkipSides, twipsPerPixel, aGap); } } } // XXX improve this to constrain rendering to the damaged area void nsCSSRendering::PaintOutline(nsIPresContext* aPresContext, nsIRenderingContext& aRenderingContext, nsIFrame* aForFrame, const nsRect& aDirtyRect, const nsRect& aBorderArea, const nsStyleSpacing& aBorderStyle, nsIStyleContext* aStyleContext, PRIntn aSkipSides, nsRect* aGap) { nsStyleCoord bordStyleRadius[4]; PRInt16 borderRadii[4],i; float percent; const nsStyleColor* bgColor = nsStyleUtil::FindNonTransparentBackground(aStyleContext); nscoord width; aBorderStyle.GetOutlineWidth(width); if (0 == width) { // Empty outline return; } // get the radius for our border aBorderStyle.mOutlineRadius.GetTop(bordStyleRadius[0]); //topleft aBorderStyle.mOutlineRadius.GetRight(bordStyleRadius[1]); //topright aBorderStyle.mOutlineRadius.GetBottom(bordStyleRadius[2]); //bottomright aBorderStyle.mOutlineRadius.GetLeft(bordStyleRadius[3]); //bottomleft for(i=0;i<4;i++) { borderRadii[i] = 0; switch ( bordStyleRadius[i].GetUnit()) { case eStyleUnit_Inherit: break; case eStyleUnit_Percent: percent = bordStyleRadius[i].GetPercentValue(); borderRadii[i] = (nscoord)(percent * aBorderArea.width); break; case eStyleUnit_Coord: borderRadii[i] = bordStyleRadius[i].GetCoordValue(); break; default: break; } } // This if control whether the outline paints on the inside // or outside of the frame #if 1 // outside nsRect inside(aBorderArea); nsRect outside(inside); inside.Inflate(width, width); nsRect clipRect(aBorderArea); clipRect.Inflate(width, width); // make clip extra big for now #else // inside nsMargin insetMargin; aBorderStyle.GetMargin(insetMargin); nsRect outside(aBorderArea); outside.Deflate(insetMargin); nsRect inside(outside); inside.Deflate(width, width); nsRect clipRect(outside); #endif PRBool clipState = PR_FALSE; aRenderingContext.PushState(); aRenderingContext.SetClipRect(clipRect, nsClipCombine_kReplace, clipState); // rounded version of the border for(i=0;i<4;i++){ if(borderRadii[i] > 0){ PaintRoundedBorder(aPresContext,aRenderingContext,aForFrame,aDirtyRect,aBorderArea,aBorderStyle,aStyleContext,aSkipSides,borderRadii,aGap,PR_TRUE); aRenderingContext.PopState(clipState); return; } } PRUint8 outlineStyle = aBorderStyle.GetOutlineStyle(); //see if any sides are dotted or dashed if ((outlineStyle == NS_STYLE_BORDER_STYLE_DOTTED) || (outlineStyle == NS_STYLE_BORDER_STYLE_DASHED)) { DrawDashedSides(0, aRenderingContext, aDirtyRect, aBorderStyle, PR_TRUE, outside, inside, aSkipSides, aGap); aRenderingContext.PopState(clipState); return; } // Draw all the other sides /* XXX something is misnamed here!!!! */ nscoord twipsPerPixel;/* XXX */ float p2t;/* XXX */ aPresContext->GetPixelsToTwips(&p2t);/* XXX */ twipsPerPixel = (nscoord) p2t;/* XXX */ nscolor outlineColor; if (aBorderStyle.GetOutlineColor(outlineColor)) { DrawSide(aRenderingContext, NS_SIDE_BOTTOM, outlineStyle, outlineColor, bgColor->mBackgroundColor, outside, inside, aSkipSides, twipsPerPixel, aGap); DrawSide(aRenderingContext, NS_SIDE_LEFT, outlineStyle, outlineColor, bgColor->mBackgroundColor,outside, inside,aSkipSides, twipsPerPixel, aGap); DrawSide(aRenderingContext, NS_SIDE_TOP, outlineStyle, outlineColor, bgColor->mBackgroundColor,outside, inside,aSkipSides, twipsPerPixel, aGap); DrawSide(aRenderingContext, NS_SIDE_RIGHT, outlineStyle, outlineColor, bgColor->mBackgroundColor,outside, inside,aSkipSides, twipsPerPixel, aGap); } // Restore clipping aRenderingContext.PopState(clipState); } /* draw the edges of the border described in aBorderEdges one segment at a time. * a border has 4 edges. Each edge has 1 or more segments. * "inside edges" are drawn differently than "outside edges" so the shared edges will match up. * in the case of table collapsing borders, the table edge is the "outside" edge and * cell edges are always "inside" edges (so adjacent cells have 2 shared "inside" edges.) * dashed segments are drawn by DrawDashedSegments(). */ // XXX: doesn't do corners or junctions well at all. Just uses logic stolen // from PaintBorder which is insufficient void nsCSSRendering::PaintBorderEdges(nsIPresContext* aPresContext, nsIRenderingContext& aRenderingContext, nsIFrame* aForFrame, const nsRect& aDirtyRect, const nsRect& aBorderArea, nsBorderEdges * aBorderEdges, nsIStyleContext* aStyleContext, PRIntn aSkipSides, nsRect* aGap) { const nsStyleColor* bgColor = nsStyleUtil::FindNonTransparentBackground(aStyleContext); if (nsnull==aBorderEdges) { // Empty border segments return; } // Turn off rendering for all of the zero sized sides if (0 == aBorderEdges->mMaxBorderWidth.top) aSkipSides |= (1 << NS_SIDE_TOP); if (0 == aBorderEdges->mMaxBorderWidth.right) aSkipSides |= (1 << NS_SIDE_RIGHT); if (0 == aBorderEdges->mMaxBorderWidth.bottom) aSkipSides |= (1 << NS_SIDE_BOTTOM); if (0 == aBorderEdges->mMaxBorderWidth.left) aSkipSides |= (1 << NS_SIDE_LEFT); // Draw any dashed or dotted segments separately DrawDashedSegments(aRenderingContext, aBorderArea, aBorderEdges, aSkipSides, aGap); // Draw all the other sides nscoord twipsPerPixel; float p2t; aPresContext->GetPixelsToTwips(&p2t); twipsPerPixel = (nscoord) p2t;/* XXX huh!*/ if (0 == (aSkipSides & (1<mEdges[NS_SIDE_TOP].Count(); PRInt32 i; nsBorderEdge * leftEdge = (nsBorderEdge *)(aBorderEdges->mEdges[NS_SIDE_LEFT].ElementAt(0)); nscoord x = aBorderEdges->mMaxBorderWidth.left - leftEdge->mWidth; for (i=0; imEdges[NS_SIDE_TOP].ElementAt(i)); nscoord y = aBorderArea.y; if (PR_TRUE==aBorderEdges->mOutsideEdge) // segments of the outside edge are bottom-aligned y += aBorderEdges->mMaxBorderWidth.top - borderEdge->mWidth; nsRect inside(x, y, borderEdge->mLength, aBorderArea.height); x += borderEdge->mLength; nsRect outside(inside); nsMargin outsideMargin(0, borderEdge->mWidth, 0, 0); outside.Deflate(outsideMargin); DrawSide(aRenderingContext, NS_SIDE_TOP, borderEdge->mStyle, borderEdge->mColor, bgColor->mBackgroundColor, inside, outside,aSkipSides, twipsPerPixel, aGap); } } if (0 == (aSkipSides & (1<mEdges[NS_SIDE_LEFT].Count(); PRInt32 i; nsBorderEdge * topEdge = (nsBorderEdge *)(aBorderEdges->mEdges[NS_SIDE_TOP].ElementAt(0)); nscoord y = aBorderEdges->mMaxBorderWidth.top - topEdge->mWidth; for (i=0; imEdges[NS_SIDE_LEFT].ElementAt(i)); nscoord x = aBorderArea.x + (aBorderEdges->mMaxBorderWidth.left - borderEdge->mWidth); nsRect inside(x, y, aBorderArea.width, borderEdge->mLength); y += borderEdge->mLength; nsRect outside(inside); nsMargin outsideMargin(borderEdge->mWidth, 0, 0, 0); outside.Deflate(outsideMargin); DrawSide(aRenderingContext, NS_SIDE_LEFT, borderEdge->mStyle, borderEdge->mColor, bgColor->mBackgroundColor, inside, outside, aSkipSides, twipsPerPixel, aGap); } } if (0 == (aSkipSides & (1<mEdges[NS_SIDE_BOTTOM].Count(); PRInt32 i; nsBorderEdge * leftEdge = (nsBorderEdge *) (aBorderEdges->mEdges[NS_SIDE_LEFT].ElementAt(aBorderEdges->mEdges[NS_SIDE_LEFT].Count()-1)); nscoord x = aBorderEdges->mMaxBorderWidth.left - leftEdge->mWidth; for (i=0; imEdges[NS_SIDE_BOTTOM].ElementAt(i)); nscoord y = aBorderArea.y; if (PR_TRUE==aBorderEdges->mOutsideEdge) // segments of the outside edge are top-aligned y -= (aBorderEdges->mMaxBorderWidth.bottom - borderEdge->mWidth); nsRect inside(x, y, borderEdge->mLength, aBorderArea.height); x += borderEdge->mLength; nsRect outside(inside); nsMargin outsideMargin(0, 0, 0, borderEdge->mWidth); outside.Deflate(outsideMargin); DrawSide(aRenderingContext, NS_SIDE_BOTTOM, borderEdge->mStyle, borderEdge->mColor, bgColor->mBackgroundColor, inside, outside,aSkipSides, twipsPerPixel, aGap); } } if (0 == (aSkipSides & (1<mEdges[NS_SIDE_RIGHT].Count(); PRInt32 i; nsBorderEdge * topEdge = (nsBorderEdge *) (aBorderEdges->mEdges[NS_SIDE_TOP].ElementAt(aBorderEdges->mEdges[NS_SIDE_TOP].Count()-1)); nscoord y = aBorderEdges->mMaxBorderWidth.top - topEdge->mWidth; for (i=0; imEdges[NS_SIDE_RIGHT].ElementAt(i)); nscoord width; if (PR_TRUE==aBorderEdges->mOutsideEdge) { width = aBorderArea.width - aBorderEdges->mMaxBorderWidth.right; width += borderEdge->mWidth; } else { width = aBorderArea.width; } nsRect inside(aBorderArea.x, y, width, borderEdge->mLength); y += borderEdge->mLength; nsRect outside(inside); nsMargin outsideMargin(0, 0, (borderEdge->mWidth), 0); outside.Deflate(outsideMargin); DrawSide(aRenderingContext, NS_SIDE_RIGHT, borderEdge->mStyle, borderEdge->mColor, bgColor->mBackgroundColor, inside, outside,aSkipSides, twipsPerPixel, aGap); } } } //---------------------------------------------------------------------- // Returns the anchor point to use for the background image. The // anchor point is the (x, y) location where the first tile should // be placed // // For repeated tiling, the anchor values are normalized wrt to the upper-left // edge of the bounds, and are always in the range: // -(aTileWidth - 1) <= anchor.x <= 0 // -(aTileHeight - 1) <= anchor.y <= 0 // // i.e., they are either 0 or a negative number whose absolute value is // less than the tile size in that dimension static void ComputeBackgroundAnchorPoint(const nsStyleColor& aColor, const nsRect& aBounds, nscoord aTileWidth, nscoord aTileHeight, nsPoint& aResult) { nscoord x; if (NS_STYLE_BG_X_POSITION_LENGTH & aColor.mBackgroundFlags) { x = aColor.mBackgroundXPosition; } else { nscoord t = aColor.mBackgroundXPosition; float pct = float(t) / 100.0f; nscoord tilePos = nscoord(pct * aTileWidth); nscoord boxPos = nscoord(pct * aBounds.width); x = boxPos - tilePos; } if (NS_STYLE_BG_REPEAT_X & aColor.mBackgroundRepeat) { // When we are tiling in the x direction the loop will run from // the left edge of the box to the right edge of the box. We need // to adjust the starting coordinate to lie within the band being // rendered. if (x < 0) { x = -x; if (x < 0) { // Some joker gave us max-negative-integer. x = 0; } x %= aTileWidth; x = -x; } else if (x != 0) { x %= aTileWidth; if (x > 0) { x = x - aTileWidth; } } NS_POSTCONDITION((x >= -(aTileWidth - 1)) && (x <= 0), "bad computed anchor value"); } aResult.x = x; nscoord y; if (NS_STYLE_BG_Y_POSITION_LENGTH & aColor.mBackgroundFlags) { y = aColor.mBackgroundYPosition; } else { nscoord t = aColor.mBackgroundYPosition; float pct = float(t) / 100.0f; nscoord tilePos = nscoord(pct * aTileHeight); nscoord boxPos = nscoord(pct * aBounds.height); y = boxPos - tilePos; } if (NS_STYLE_BG_REPEAT_Y & aColor.mBackgroundRepeat) { // When we are tiling in the y direction the loop will run from // the top edge of the box to the bottom edge of the box. We need // to adjust the starting coordinate to lie within the band being // rendered. if (y < 0) { y = -y; if (y < 0) { // Some joker gave us max-negative-integer. y = 0; } y %= aTileHeight; y = -y; } else if (y != 0) { y %= aTileHeight; if (y > 0) { y = y - aTileHeight; } } NS_POSTCONDITION((y >= -(aTileHeight - 1)) && (y <= 0), "bad computed anchor value"); } aResult.y = y; } // Returns the nearest scroll frame ancestor static nsIFrame* GetNearestScrollFrame(nsIFrame* aFrame) { for (nsIFrame* f = aFrame; f; f->GetParent(&f)) { nsIAtom* frameType; // Is it a scroll frame? f->GetFrameType(&frameType); if (nsLayoutAtoms::scrollFrame == frameType) { NS_RELEASE(frameType); return f; } NS_IF_RELEASE(frameType); } return nsnull; } void nsCSSRendering::PaintBackground(nsIPresContext* aPresContext, nsIRenderingContext& aRenderingContext, nsIFrame* aForFrame, const nsRect& aDirtyRect, const nsRect& aBorderArea, const nsStyleColor& aColor, const nsStyleSpacing& aSpacing, nscoord aDX, nscoord aDY) { NS_ASSERTION(aForFrame, "Frame is expected to be provided to PaintBackground"); PRBool transparentBG = NS_STYLE_BG_COLOR_TRANSPARENT == (aColor.mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT); float percent; nsStyleCoord bordStyleRadius[4]; PRInt16 borderRadii[4],i; if (0 < aColor.mBackgroundImage.Length()) { // get the frame for the background image load to complete in // - this may be different than the frame we are rendering // (as in the case of the canvas frame) nsIFrame *pBGFrame = nsnull; GetFrameForBackgroundUpdate(aPresContext, aForFrame, &pBGFrame); NS_ASSERTION(pBGFrame, "Background Frame must be set by GetFrameForBackgroundUpdate"); // Lookup the image nsSize imageSize; nsCOMPtr image; nsIFrameImageLoader* loader = nsnull; nsresult rv = aPresContext->StartLoadImage(aColor.mBackgroundImage, transparentBG ? nsnull : &aColor.mBackgroundColor, nsnull, pBGFrame, nsnull, nsnull, &loader); if ((NS_OK != rv) || (nsnull == loader) || (loader->GetImage(getter_AddRefs(image)), (!image))) { NS_IF_RELEASE(loader); // Redraw will happen later if (!transparentBG) { // The background color is rendered over the 'border' 'padding' and // 'content' areas aRenderingContext.SetColor(aColor.mBackgroundColor); aRenderingContext.FillRect(aBorderArea); } return; } loader->GetSize(imageSize); NS_RELEASE(loader); // Background images are tiled over the 'content' and 'padding' areas // only (not the 'border' area) nsRect paddingArea(aBorderArea); nsMargin border; if (!aSpacing.GetBorder(border)) { NS_NOTYETIMPLEMENTED("percentage border"); } paddingArea.Deflate(border); // The actual dirty rect is the intersection of the padding area and the // dirty rect we were given nsRect dirtyRect; if (!dirtyRect.IntersectRect(paddingArea, aDirtyRect)) { // Nothing to paint return; } // Based on the repeat setting, compute how many tiles we should // lay down for each axis. The value computed is the maximum based // on the dirty rect before accounting for the background-position. nscoord tileWidth = imageSize.width; nscoord tileHeight = imageSize.height; PRBool needBackgroundColor = PR_TRUE; PRIntn repeat = aColor.mBackgroundRepeat; nscoord xDistance, yDistance; PRBool needBackgroundOnContinuation = PR_FALSE; // set to true if repeat-y value is set switch (repeat) { case NS_STYLE_BG_REPEAT_OFF: default: xDistance = tileWidth; yDistance = tileHeight; break; case NS_STYLE_BG_REPEAT_X: xDistance = dirtyRect.width; yDistance = tileHeight; break; case NS_STYLE_BG_REPEAT_Y: xDistance = tileWidth; yDistance = dirtyRect.height; needBackgroundOnContinuation = PR_TRUE; break; case NS_STYLE_BG_REPEAT_XY: xDistance = dirtyRect.width; yDistance = dirtyRect.height; needBackgroundOnContinuation = PR_TRUE; // We need to render the background color if the image is transparent //needBackgroundColor = image->GetHasAlphaMask(); break; } // The background color is rendered over the 'border' 'padding' and // 'content' areas if (!transparentBG && needBackgroundColor) { aRenderingContext.SetColor(aColor.mBackgroundColor); aRenderingContext.FillRect(aBorderArea); } // See if there's nothing left to do if ((tileWidth == 0) || (tileHeight == 0) || dirtyRect.IsEmpty()) { // Nothing to paint return; } // if the frame is a continuation frame, check if we need to draw the image for it // (continuation with no repeat setting in the Y direction do not get background images) if (aForFrame) { nsIFrame *prevInFlowFrame = nsnull; aForFrame->GetPrevInFlow(&prevInFlowFrame); if (prevInFlowFrame != nsnull) { if (!needBackgroundOnContinuation) { // the frame is a continuation, and we do not want the background image repeated // in the Y direction (needBackgroundOnContinuation == PR_FALSE) so just bail return; } } } // If it's a fixed background attachment, then get the nearest scrolling // ancestor nsIView* viewportView = nsnull; nsRect viewportArea(0, 0, 0, 0); nscoord scroll_x, scroll_y; if (NS_STYLE_BG_ATTACHMENT_FIXED == aColor.mBackgroundAttachment) { nsIFrame* scrollFrame = GetNearestScrollFrame(aForFrame); nsIFrame* scrolledFrame = nsnull; // get the nsIScrollableFrame interface from the scrollframe if (scrollFrame) { nsCOMPtr scrollableFrame ( do_QueryInterface(scrollFrame) ); if ( scrollableFrame ) { scrollableFrame->GetScrolledFrame(aPresContext, scrolledFrame); if (scrolledFrame) { nsRect rect; scrolledFrame->GetRect(rect); viewportArea.width = rect.width; viewportArea.height = rect.width; scrolledFrame->GetView(aPresContext, &viewportView); } // get the current scroll position for determining the anchor point of the image scrollableFrame->GetScrollPosition(aPresContext, scroll_x, scroll_y); } } if (!scrolledFrame) { // The viewport isn't scrollable, so use the root frame's view nsIPresShell* presShell; nsIFrame* rootFrame; aPresContext->GetShell(&presShell); presShell->GetRootFrame(&rootFrame); NS_RELEASE(presShell); rootFrame->GetView(aPresContext, (nsIView**)&viewportView); NS_ASSERTION(viewportView, "no viewport view"); viewportView->GetDimensions(&viewportArea.width, &viewportArea.height); } } // Compute the anchor point. If it's a fixed background attachment, then // the image is placed relative to the viewport; otherwise, it's placed // relative to the element's padding area. // // When tiling, the anchor coordinate values will be negative offsets // from the padding area nsPoint anchor; ComputeBackgroundAnchorPoint(aColor, NS_STYLE_BG_ATTACHMENT_FIXED == aColor.mBackgroundAttachment ? viewportArea : paddingArea, tileWidth, tileHeight, anchor); // If it's a fixed background attachment, then convert the anchor point // to aForFrame's coordinate space if (NS_STYLE_BG_ATTACHMENT_FIXED == aColor.mBackgroundAttachment) { nsIView* view; aForFrame->GetView(aPresContext, &view); if (!view) { nsPoint offset; aForFrame->GetOffsetFromView(aPresContext, offset, &view); anchor -= offset; } NS_ASSERTION(view, "expected a view"); while (view && (view != viewportView)) { nscoord x, y; view->GetPosition(&x, &y); anchor.x -= x; anchor.y -= y; // Get the parent view view->GetParent(view); } } #ifndef XP_UNIX // Setup clipping so that rendering doesn't leak out of the computed // dirty rect PRBool clipState; aRenderingContext.PushState(); aRenderingContext.SetClipRect(dirtyRect, nsClipCombine_kIntersect, clipState); #endif // Compute the x and y starting points and limits for tiling nscoord x0, x1; if (NS_STYLE_BG_ATTACHMENT_FIXED == aColor.mBackgroundAttachment) { if (NS_STYLE_BG_REPEAT_X & repeat) { x0 = ((dirtyRect.x - anchor.x) / tileWidth) * tileWidth + anchor.x; x1 = x0 + xDistance + tileWidth; if (0 != anchor.x) { x1 += tileWidth; } } else { // For fixed attachment, the anchor is relative to the nearest scrolling // ancestor (or the viewport) x0 = anchor.x; x1 = x0 + tileWidth; } } else { if (NS_STYLE_BG_REPEAT_X & repeat) { // When tiling in the x direction, adjust the starting position of the // tile to account for dirtyRect.x. When tiling in x, the anchor.x value // will be a negative value used to adjust the starting coordinate. x0 = (dirtyRect.x / tileWidth) * tileWidth + anchor.x; if(x0+tileWidthGetVisibleArea(srcRect); tvrect.SetRect(0,0,x1-x0,y1-y0); aPresContext->GetTwipsToPixels(&t2p); // check to see if the background image has a mask hasMask = image->GetHasAlphaMask(); if(!hasMask && ((tileWidth<(tvrect.width/16)) || (tileHeight<(tvrect.height/16)))) { //tvrect.width /=4; //tvrect.height /=4; tvrect.width = ((tvrect.width)/tileWidth); //total x number of tiles tvrect.width *=tileWidth; tvrect.height = ((tvrect.height)/tileHeight); //total y number of tiles tvrect.height *=tileHeight; // create a new drawing surface... using pixels as the size vrect.height = (nscoord)(tvrect.height * t2p); vrect.width = (nscoord)(tvrect.width * t2p); aRenderingContext.CreateDrawingSurface(&vrect,dsFlag,(nsDrawingSurface&)ts); } // did we need to create an offscreen drawing surface because the image was so small if(!hasMask && (nsnull != ts) ) { aRenderingContext.SelectOffScreenDrawingSurface(ts); // create a bigger tile in our new drawingsurface // XXX pushing state to fix clipping problem, need to look into why the clip is set here aRenderingContext.PushState(); aRenderingContext.GetCurrentTransform(theTransform); aRenderingContext.GetDeviceContext(theDevContext); theDevContext->GetAppUnitsToDevUnits(app2dev); NS_RELEASE(theDevContext); theTransform->SetToIdentity(); theTransform->AddScale(app2dev, app2dev); // XXX this #ifdef needs to go away when we are sure that this works on windows and mac #ifdef XP_UNIX srcRect.SetRect(0,0,tvrect.width,tvrect.height); aRenderingContext.SetClipRect(srcRect, nsClipCombine_kReplace, clip); #endif // copy the initial image to our buffer, this takes twips and converts to pixels.. // which is what the image is in aRenderingContext.DrawImage(image,0,0,tileWidth,tileHeight); // duplicate the image in the upperleft corner to fill up the nsDrawingSurface srcRect.SetRect(0,0,tileWidth,tileHeight); TileImage(aRenderingContext,ts,srcRect,tvrect.width,tvrect.height); // setting back the clip from the background clip push aRenderingContext.PopState(clip); // set back to the old drawingsurface aRenderingContext.SelectOffScreenDrawingSurface((void**)theSurface); // now duplicate our tile into the background destRect = srcRect; for(y=y0;y 0){ PaintRoundedBackground(aPresContext,aRenderingContext,aForFrame,aDirtyRect,aBorderArea,aColor,aSpacing,aDX,aDY,borderRadii); return; } } aRenderingContext.SetColor(aColor.mBackgroundColor); aRenderingContext.FillRect(aBorderArea); } } } /** --------------------------------------------------- * A bit blitter to tile images to the background recursively * @update 4/13/99 dwc * @param aRC -- Rendering Context to render to * @param aDS -- Target drawing surface for the rendering context * @param aSrcRect -- Rectangle we are build with the image * @param aHeight -- height of the tile * @param aWidth -- width of the tile */ static void TileImage(nsIRenderingContext& aRC,nsDrawingSurface aDS,nsRect &aSrcRect,PRInt16 aWidth,PRInt16 aHeight) { nsRect destRect; PRInt32 flag = NS_COPYBITS_TO_BACK_BUFFER | NS_COPYBITS_XFORM_DEST_VALUES; if( aSrcRect.width < aWidth) { // width is less than double so double our source bitmap width destRect = aSrcRect; destRect.x += aSrcRect.width; aRC.CopyOffScreenBits(aDS,aSrcRect.x,aSrcRect.y,destRect,flag); aSrcRect.width*=2; TileImage(aRC,aDS,aSrcRect,aWidth,aHeight); } else if (aSrcRect.height < aHeight) { // height is less than double so double our source bitmap height destRect = aSrcRect; destRect.y += aSrcRect.height; aRC.CopyOffScreenBits(aDS,aSrcRect.x,aSrcRect.y,destRect,flag); aSrcRect.height*=2; TileImage(aRC,aDS,aSrcRect,aWidth,aHeight); } } /** --------------------------------------------------- * See documentation in nsCSSRendering.h * @update 3/26/99 dwc */ void nsCSSRendering::PaintRoundedBackground(nsIPresContext* aPresContext, nsIRenderingContext& aRenderingContext, nsIFrame* aForFrame, const nsRect& aDirtyRect, const nsRect& aBorderArea, const nsStyleColor& aColor, const nsStyleSpacing& aSpacing, nscoord aDX, nscoord aDY, PRInt16 aTheRadius[4]) { RoundedRect outerPath; QBCurve cr1,cr2,cr3,cr4; QBCurve UL,UR,LL,LR; PRInt32 curIndex,c1Index; nsFloatPoint thePath[MAXPATHSIZE]; nsPoint polyPath[MAXPOLYPATHSIZE]; PRInt16 np; nscoord twipsPerPixel; float p2t; // needed for our border thickness aPresContext->GetPixelsToTwips(&p2t); twipsPerPixel = NSToCoordRound(p2t); aRenderingContext.SetColor(aColor.mBackgroundColor); // set the rounded rect up, and let'er rip outerPath.Set(aBorderArea.x,aBorderArea.y,aBorderArea.width,aBorderArea.height,aTheRadius,twipsPerPixel); outerPath.GetRoundedBorders(UL,UR,LL,LR); // BUILD THE ENTIRE OUTSIDE PATH // TOP LINE ---------------------------------------------------------------- UL.MidPointDivide(&cr1,&cr2); UR.MidPointDivide(&cr3,&cr4); np=0; thePath[np++].MoveTo(cr2.mAnc1.x,cr2.mAnc1.y); thePath[np++].MoveTo(cr2.mCon.x, cr2.mCon.y); thePath[np++].MoveTo(cr2.mAnc2.x, cr2.mAnc2.y); thePath[np++].MoveTo(cr3.mAnc1.x, cr3.mAnc1.y); thePath[np++].MoveTo(cr3.mCon.x, cr3.mCon.y); thePath[np++].MoveTo(cr3.mAnc2.x, cr3.mAnc2.y); polyPath[0].x = NSToCoordRound(thePath[0].x); polyPath[0].y = NSToCoordRound(thePath[0].y); curIndex = 1; GetPath(thePath,polyPath,&curIndex,eOutside,c1Index); // RIGHT LINE ---------------------------------------------------------------- LR.MidPointDivide(&cr2,&cr3); np=0; thePath[np++].MoveTo(cr4.mAnc1.x,cr4.mAnc1.y); thePath[np++].MoveTo(cr4.mCon.x, cr4.mCon.y); thePath[np++].MoveTo(cr4.mAnc2.x, cr4.mAnc2.y); thePath[np++].MoveTo(cr2.mAnc1.x, cr2.mAnc1.y); thePath[np++].MoveTo(cr2.mCon.x, cr2.mCon.y); thePath[np++].MoveTo(cr2.mAnc2.x, cr2.mAnc2.y); GetPath(thePath,polyPath,&curIndex,eOutside,c1Index); // BOTTOM LINE ---------------------------------------------------------------- LL.MidPointDivide(&cr2,&cr4); np=0; thePath[np++].MoveTo(cr3.mAnc1.x,cr3.mAnc1.y); thePath[np++].MoveTo(cr3.mCon.x, cr3.mCon.y); thePath[np++].MoveTo(cr3.mAnc2.x, cr3.mAnc2.y); thePath[np++].MoveTo(cr2.mAnc1.x, cr2.mAnc1.y); thePath[np++].MoveTo(cr2.mCon.x, cr2.mCon.y); thePath[np++].MoveTo(cr2.mAnc2.x, cr2.mAnc2.y); GetPath(thePath,polyPath,&curIndex,eOutside,c1Index); // LEFT LINE ---------------------------------------------------------------- np=0; thePath[np++].MoveTo(cr4.mAnc1.x,cr4.mAnc1.y); thePath[np++].MoveTo(cr4.mCon.x, cr4.mCon.y); thePath[np++].MoveTo(cr4.mAnc2.x, cr4.mAnc2.y); thePath[np++].MoveTo(cr1.mAnc1.x, cr1.mAnc1.y); thePath[np++].MoveTo(cr1.mCon.x, cr1.mCon.y); thePath[np++].MoveTo(cr1.mAnc2.x, cr1.mAnc2.y); GetPath(thePath,polyPath,&curIndex,eOutside,c1Index); aRenderingContext.FillPolygon(polyPath,curIndex); } /** --------------------------------------------------- * See documentation in nsCSSRendering.h * @update 3/26/99 dwc */ void nsCSSRendering::PaintRoundedBorder(nsIPresContext* aPresContext, nsIRenderingContext& aRenderingContext, nsIFrame* aForFrame, const nsRect& aDirtyRect, const nsRect& aBorderArea, const nsStyleSpacing& aBorderStyle, nsIStyleContext* aStyleContext, PRIntn aSkipSides, PRInt16 aBorderRadius[4], nsRect* aGap, PRBool aIsOutline) { RoundedRect outerPath; QBCurve UL,LL,UR,LR; QBCurve IUL,ILL,IUR,ILR; QBCurve cr1,cr2,cr3,cr4; QBCurve Icr1,Icr2,Icr3,Icr4; nsFloatPoint thePath[MAXPATHSIZE]; PRInt16 np; nsMargin border; nscoord twipsPerPixel,qtwips; float p2t; if (!aIsOutline) { aBorderStyle.CalcBorderFor(aForFrame, border); if ((0 == border.left) && (0 == border.right) && (0 == border.top) && (0 == border.bottom)) { return; } } else { nscoord width; if (!aBorderStyle.GetOutlineWidth(width)) { return; } border.left = width; border.right = width; border.top = width; border.bottom = width; } // needed for our border thickness aPresContext->GetPixelsToTwips(&p2t); twipsPerPixel = NSToCoordRound(p2t); // Base our thickness check on the segment being less than a pixel and 1/2 qtwips = twipsPerPixel >> 2; //qtwips = twipsPerPixel; outerPath.Set(aBorderArea.x,aBorderArea.y,aBorderArea.width,aBorderArea.height,aBorderRadius,twipsPerPixel); outerPath.GetRoundedBorders(UL,UR,LL,LR); outerPath.CalcInsetCurves(IUL,IUR,ILL,ILR,border); // TOP LINE -- construct and divide the curves first, then put together our top and bottom paths UL.MidPointDivide(&cr1,&cr2); UR.MidPointDivide(&cr3,&cr4); IUL.MidPointDivide(&Icr1,&Icr2); IUR.MidPointDivide(&Icr3,&Icr4); if(0!=border.top){ np=0; thePath[np++].MoveTo(cr2.mAnc1.x,cr2.mAnc1.y); thePath[np++].MoveTo(cr2.mCon.x, cr2.mCon.y); thePath[np++].MoveTo(cr2.mAnc2.x, cr2.mAnc2.y); thePath[np++].MoveTo(cr3.mAnc1.x, cr3.mAnc1.y); thePath[np++].MoveTo(cr3.mCon.x, cr3.mCon.y); thePath[np++].MoveTo(cr3.mAnc2.x, cr3.mAnc2.y); thePath[np++].MoveTo(Icr3.mAnc2.x,Icr3.mAnc2.y); thePath[np++].MoveTo(Icr3.mCon.x, Icr3.mCon.y); thePath[np++].MoveTo(Icr3.mAnc1.x, Icr3.mAnc1.y); thePath[np++].MoveTo(Icr2.mAnc2.x, Icr2.mAnc2.y); thePath[np++].MoveTo(Icr2.mCon.x, Icr2.mCon.y); thePath[np++].MoveTo(Icr2.mAnc1.x, Icr2.mAnc1.y); RenderSide(thePath,aRenderingContext,aBorderStyle,aStyleContext,NS_SIDE_TOP,border,qtwips, aIsOutline); } // RIGHT LINE ---------------------------------------------------------------- LR.MidPointDivide(&cr2,&cr3); ILR.MidPointDivide(&Icr2,&Icr3); if(0!=border.right){ np=0; thePath[np++].MoveTo(cr4.mAnc1.x,cr4.mAnc1.y); thePath[np++].MoveTo(cr4.mCon.x, cr4.mCon.y); thePath[np++].MoveTo(cr4.mAnc2.x,cr4.mAnc2.y); thePath[np++].MoveTo(cr2.mAnc1.x,cr2.mAnc1.y); thePath[np++].MoveTo(cr2.mCon.x, cr2.mCon.y); thePath[np++].MoveTo(cr2.mAnc2.x,cr2.mAnc2.y); thePath[np++].MoveTo(Icr2.mAnc2.x,Icr2.mAnc2.y); thePath[np++].MoveTo(Icr2.mCon.x, Icr2.mCon.y); thePath[np++].MoveTo(Icr2.mAnc1.x,Icr2.mAnc1.y); thePath[np++].MoveTo(Icr4.mAnc2.x,Icr4.mAnc2.y); thePath[np++].MoveTo(Icr4.mCon.x, Icr4.mCon.y); thePath[np++].MoveTo(Icr4.mAnc1.x,Icr4.mAnc1.y); RenderSide(thePath,aRenderingContext,aBorderStyle,aStyleContext,NS_SIDE_RIGHT,border,qtwips, aIsOutline); } // bottom line ---------------------------------------------------------------- LL.MidPointDivide(&cr2,&cr4); ILL.MidPointDivide(&Icr2,&Icr4); if(0!=border.bottom){ np=0; thePath[np++].MoveTo(cr3.mAnc1.x,cr3.mAnc1.y); thePath[np++].MoveTo(cr3.mCon.x, cr3.mCon.y); thePath[np++].MoveTo(cr3.mAnc2.x, cr3.mAnc2.y); thePath[np++].MoveTo(cr2.mAnc1.x, cr2.mAnc1.y); thePath[np++].MoveTo(cr2.mCon.x, cr2.mCon.y); thePath[np++].MoveTo(cr2.mAnc2.x, cr2.mAnc2.y); thePath[np++].MoveTo(Icr2.mAnc2.x,Icr2.mAnc2.y); thePath[np++].MoveTo(Icr2.mCon.x, Icr2.mCon.y); thePath[np++].MoveTo(Icr2.mAnc1.x, Icr2.mAnc1.y); thePath[np++].MoveTo(Icr3.mAnc2.x, Icr3.mAnc2.y); thePath[np++].MoveTo(Icr3.mCon.x, Icr3.mCon.y); thePath[np++].MoveTo(Icr3.mAnc1.x, Icr3.mAnc1.y); RenderSide(thePath,aRenderingContext,aBorderStyle,aStyleContext,NS_SIDE_BOTTOM,border,qtwips, aIsOutline); } // left line ---------------------------------------------------------------- if(0==border.left) return; np=0; thePath[np++].MoveTo(cr4.mAnc1.x,cr4.mAnc1.y); thePath[np++].MoveTo(cr4.mCon.x, cr4.mCon.y); thePath[np++].MoveTo(cr4.mAnc2.x, cr4.mAnc2.y); thePath[np++].MoveTo(cr1.mAnc1.x, cr1.mAnc1.y); thePath[np++].MoveTo(cr1.mCon.x, cr1.mCon.y); thePath[np++].MoveTo(cr1.mAnc2.x, cr1.mAnc2.y); thePath[np++].MoveTo(Icr1.mAnc2.x,Icr1.mAnc2.y); thePath[np++].MoveTo(Icr1.mCon.x, Icr1.mCon.y); thePath[np++].MoveTo(Icr1.mAnc1.x, Icr1.mAnc1.y); thePath[np++].MoveTo(Icr4.mAnc2.x, Icr4.mAnc2.y); thePath[np++].MoveTo(Icr4.mCon.x, Icr4.mCon.y); thePath[np++].MoveTo(Icr4.mAnc1.x, Icr4.mAnc1.y); RenderSide(thePath,aRenderingContext,aBorderStyle,aStyleContext,NS_SIDE_LEFT,border,qtwips, aIsOutline); } /** --------------------------------------------------- * See documentation in nsCSSRendering.h * @update 3/26/99 dwc */ void nsCSSRendering::RenderSide(nsFloatPoint aPoints[],nsIRenderingContext& aRenderingContext, const nsStyleSpacing& aBorderStyle,nsIStyleContext* aStyleContext, PRUint8 aSide,nsMargin &aBorThick,nscoord aTwipsPerPixel, PRBool aIsOutline) { QBCurve thecurve; nscolor sideColor; nsPoint polypath[MAXPOLYPATHSIZE]; PRInt32 curIndex,c1Index,c2Index,junk; PRInt8 border_Style; PRInt16 thickness; // set the style information if (!aIsOutline) { aBorderStyle.GetBorderColor(aSide,sideColor); } else { aBorderStyle.GetOutlineColor(sideColor); } aRenderingContext.SetColor ( sideColor ); thickness = 0; switch(aSide){ case NS_SIDE_LEFT: thickness = aBorThick.left; break; case NS_SIDE_TOP: thickness = aBorThick.top; break; case NS_SIDE_RIGHT: thickness = aBorThick.right; break; case NS_SIDE_BOTTOM: thickness = aBorThick.bottom; break; } // if the border is thin, just draw it if (thickness<=aTwipsPerPixel) { // NOTHING FANCY JUST DRAW OUR OUTSIDE BORDER thecurve.SetPoints(aPoints[0].x,aPoints[0].y,aPoints[1].x,aPoints[1].y,aPoints[2].x,aPoints[2].y); thecurve.SubDivide((nsIRenderingContext*)&aRenderingContext,0,0); aRenderingContext.DrawLine((nscoord)aPoints[2].x,(nscoord)aPoints[2].y,(nscoord)aPoints[3].x,(nscoord)aPoints[3].y); thecurve.SetPoints(aPoints[3].x,aPoints[3].y,aPoints[4].x,aPoints[4].y,aPoints[5].x,aPoints[5].y); thecurve.SubDivide((nsIRenderingContext*)&aRenderingContext,0,0); } else { if (!aIsOutline) { border_Style = aBorderStyle.GetBorderStyle(aSide); } else { border_Style = aBorderStyle.GetOutlineStyle(); } switch (border_Style){ case NS_STYLE_BORDER_STYLE_OUTSET: case NS_STYLE_BORDER_STYLE_INSET: { const nsStyleColor* bgColor = nsStyleUtil::FindNonTransparentBackground(aStyleContext); aBorderStyle.GetBorderColor(aSide,sideColor); aRenderingContext.SetColor ( MakeBevelColor (aSide, border_Style, bgColor->mBackgroundColor,sideColor, PR_TRUE)); } case NS_STYLE_BORDER_STYLE_DOTTED: case NS_STYLE_BORDER_STYLE_DASHED: // break; This is here until dotted and dashed are supported. It is ok to have // dotted and dashed render in solid until this style is supported. This code should // be moved when it is supported so that the above outset and inset will fall into the // solid code below.... case NS_STYLE_BORDER_STYLE_SOLID: polypath[0].x = NSToCoordRound(aPoints[0].x); polypath[0].y = NSToCoordRound(aPoints[0].y); curIndex = 1; GetPath(aPoints,polypath,&curIndex,eOutside,c1Index); c2Index = curIndex; polypath[curIndex].x = NSToCoordRound(aPoints[6].x); polypath[curIndex].y = NSToCoordRound(aPoints[6].y); curIndex++; GetPath(aPoints,polypath,&curIndex,eInside,junk); polypath[curIndex].x = NSToCoordRound(aPoints[0].x); polypath[curIndex].y = NSToCoordRound(aPoints[0].y); curIndex++; aRenderingContext.FillPolygon(polypath,curIndex); break; case NS_STYLE_BORDER_STYLE_DOUBLE: polypath[0].x = NSToCoordRound(aPoints[0].x); polypath[0].y = NSToCoordRound(aPoints[0].y); curIndex = 1; GetPath(aPoints,polypath,&curIndex,eOutside,c1Index); aRenderingContext.DrawPolyline(polypath,curIndex); polypath[0].x = NSToCoordRound(aPoints[6].x); polypath[0].y = NSToCoordRound(aPoints[6].y); curIndex = 1; GetPath(aPoints,polypath,&curIndex,eInside,c1Index); aRenderingContext.DrawPolyline(polypath,curIndex); break; case NS_STYLE_BORDER_STYLE_NONE: case NS_STYLE_BORDER_STYLE_HIDDEN: case NS_STYLE_BORDER_STYLE_BLANK: break; case NS_STYLE_BORDER_STYLE_RIDGE: case NS_STYLE_BORDER_STYLE_GROOVE: { const nsStyleColor* bgColor = nsStyleUtil::FindNonTransparentBackground(aStyleContext); aBorderStyle.GetBorderColor(aSide,sideColor); aRenderingContext.SetColor ( MakeBevelColor (aSide, border_Style, bgColor->mBackgroundColor,sideColor, PR_TRUE)); polypath[0].x = NSToCoordRound(aPoints[0].x); polypath[0].y = NSToCoordRound(aPoints[0].y); curIndex = 1; GetPath(aPoints,polypath,&curIndex,eOutside,c1Index); polypath[curIndex].x = NSToCoordRound((aPoints[5].x + aPoints[6].x)/2.0f); polypath[curIndex].y = NSToCoordRound((aPoints[5].y + aPoints[6].y)/2.0f); curIndex++; GetPath(aPoints,polypath,&curIndex,eCalcRev,c1Index,.5); polypath[curIndex].x = NSToCoordRound(aPoints[0].x); polypath[curIndex].y = NSToCoordRound(aPoints[0].y); curIndex++; aRenderingContext.FillPolygon(polypath,curIndex); aRenderingContext.SetColor ( MakeBevelColor (aSide, ((border_Style == NS_STYLE_BORDER_STYLE_RIDGE) ? NS_STYLE_BORDER_STYLE_GROOVE : NS_STYLE_BORDER_STYLE_RIDGE), bgColor->mBackgroundColor,sideColor, PR_TRUE)); polypath[0].x = NSToCoordRound((aPoints[0].x + aPoints[11].x)/2.0f); polypath[0].y = NSToCoordRound((aPoints[0].y + aPoints[11].y)/2.0f); curIndex = 1; GetPath(aPoints,polypath,&curIndex,eCalc,c1Index,.5); polypath[curIndex].x = NSToCoordRound(aPoints[6].x) ; polypath[curIndex].y = NSToCoordRound(aPoints[6].y); curIndex++; GetPath(aPoints,polypath,&curIndex,eInside,c1Index); polypath[curIndex].x = NSToCoordRound(aPoints[0].x); polypath[curIndex].y = NSToCoordRound(aPoints[0].y); curIndex++; aRenderingContext.FillPolygon(polypath,curIndex); } break; default: break; } } } /** --------------------------------------------------- * See documentation in nsCSSRendering.h * @update 3/26/99 dwc */ void RoundedRect::CalcInsetCurves(QBCurve &aULCurve,QBCurve &aURCurve,QBCurve &aLLCurve,QBCurve &aLRCurve,nsMargin &aBorder) { PRInt32 nLeft,nTop,nRight,nBottom; PRInt32 tLeft,bLeft,tRight,bRight,lTop,rTop,lBottom,rBottom; PRInt16 adjust=0; if(mDoRound) adjust = mRoundness[0]>>3; nLeft = mLeft + aBorder.left; tLeft = mLeft + mRoundness[0]; bLeft = mLeft + mRoundness[3]; if(tLeft < nLeft){ tLeft = nLeft; } if(bLeft < nLeft){ bLeft = nLeft; } nRight = mRight - aBorder.right; tRight = mRight - mRoundness[1]; bRight = mRight - mRoundness[2]; if(tRight > nRight){ tRight = nRight; } if(bRight > nRight){ bRight = nRight; } nTop = mTop + aBorder.top; lTop = mTop + mRoundness[0]; rTop = mTop + mRoundness[1]; if(lTop < nTop){ lTop = nTop; } if(rTop < nTop){ rTop = nTop; } nBottom = mBottom - aBorder.bottom; lBottom = mBottom - mRoundness[3]; rBottom = mBottom - mRoundness[2]; if(lBottom > nBottom){ lBottom = nBottom; } if(rBottom > nBottom){ rBottom = nBottom; } // set the passed in curves to the rounded borders of the rectangle aULCurve.SetPoints( (float)nLeft,(float)lTop, (float)nLeft+adjust,(float)nTop+adjust, (float)tLeft,(float)nTop); aURCurve.SetPoints( (float)tRight,(float)nTop, (float)nRight-adjust,(float)nTop+adjust, (float)nRight,(float)rTop); aLRCurve.SetPoints( (float)nRight,(float)rBottom, (float)nRight-adjust,(float)nBottom-adjust, (float)bRight,(float)nBottom); aLLCurve.SetPoints( (float)bLeft,(float)nBottom, (float)nLeft+adjust,(float)nBottom-adjust, (float)nLeft,(float)lBottom); } /** --------------------------------------------------- * See documentation in nsCSSRendering.h * @update 4/13/99 dwc */ void RoundedRect::Set(nscoord aLeft,nscoord aTop,PRInt32 aWidth,PRInt32 aHeight,PRInt16 aRadius[4],PRInt16 aNumTwipPerPix) { PRBool doRound; nscoord x,y,width,height; int i; // convert this rect to pixel boundaries x = (aLeft/aNumTwipPerPix)*aNumTwipPerPix; y = (aTop/aNumTwipPerPix)*aNumTwipPerPix; width = (aWidth/aNumTwipPerPix)*aNumTwipPerPix; height = (aHeight/aNumTwipPerPix)*aNumTwipPerPix; for(i=0;i<4;i++) { if( (aRadius[i]) > (aWidth>>1) ){ mRoundness[i] = (aWidth>>1); } else { mRoundness[i] = aRadius[i]; } if( mRoundness[i] > (aHeight>>1) ) mRoundness[i] = aHeight>>1; } // if we are drawing a circle mDoRound = PR_FALSE; if(aHeight==aWidth){ for(i=0;i<4;i++){ if(mRoundness[i]<(aWidth>>1)){ doRound = PR_FALSE; break; } } if(doRound){ mDoRound = PR_TRUE; for(i=0;i<4;i++){ mRoundness[i] = aWidth>>1; } } } // important coordinates that the path hits mLeft = x; mTop = y; mRight = x+width; mBottom = y+height; } /** --------------------------------------------------- * See documentation in nsCSSRendering.h * @update 4/13/99 dwc */ void RoundedRect::GetRoundedBorders(QBCurve &aULCurve,QBCurve &aURCurve,QBCurve &aLLCurve,QBCurve &aLRCurve) { PRInt16 adjust=0; if(mDoRound) adjust = mRoundness[0]>>3; // set the passed in curves to the rounded borders of the rectangle aULCurve.SetPoints( (float)mLeft,(float)mTop + mRoundness[0], (float)mLeft+adjust,(float)mTop+adjust, (float)mLeft+mRoundness[0],(float)mTop); aURCurve.SetPoints( (float)mRight - mRoundness[1],(float)mTop, (float)mRight-adjust,(float)mTop+adjust, (float)mRight,(float)mTop + mRoundness[1]); aLRCurve.SetPoints( (float)mRight,(float)mBottom - mRoundness[2], (float)mRight-adjust,(float)mBottom-adjust, (float)mRight - mRoundness[2],(float)mBottom); aLLCurve.SetPoints( (float)mLeft + mRoundness[3],(float)mBottom, (float)mLeft+adjust,(float)mBottom-adjust, (float)mLeft,(float)mBottom - mRoundness[3]); } /** --------------------------------------------------- * Given a qbezier path, convert it into a polygon path * @update 3/26/99 dwc * @param aPoints -- an array of points to use for the path * @param aPolyPath -- an array of points containing the flattened polygon to use * @param aCurIndex -- the index that points to the last element of the array * @param aPathType -- what kind of path that should be returned * @param aFrac -- the inset amount for a eCalc type path */ static void GetPath(nsFloatPoint aPoints[],nsPoint aPolyPath[],PRInt32 *aCurIndex,ePathTypes aPathType,PRInt32 &aC1Index,float aFrac) { QBCurve thecurve; switch (aPathType) { case eOutside: thecurve.SetPoints(aPoints[0].x,aPoints[0].y,aPoints[1].x,aPoints[1].y,aPoints[2].x,aPoints[2].y); thecurve.SubDivide(nsnull,aPolyPath,aCurIndex); aC1Index = *aCurIndex; aPolyPath[*aCurIndex].x = (nscoord)aPoints[3].x; aPolyPath[*aCurIndex].y = (nscoord)aPoints[3].y; (*aCurIndex)++; thecurve.SetPoints(aPoints[3].x,aPoints[3].y,aPoints[4].x,aPoints[4].y,aPoints[5].x,aPoints[5].y); thecurve.SubDivide(nsnull,aPolyPath,aCurIndex); break; case eInside: thecurve.SetPoints(aPoints[6].x,aPoints[6].y,aPoints[7].x,aPoints[7].y,aPoints[8].x,aPoints[8].y); thecurve.SubDivide(nsnull,aPolyPath,aCurIndex); aPolyPath[*aCurIndex].x = (nscoord)aPoints[9].x; aPolyPath[*aCurIndex].y = (nscoord)aPoints[9].y; (*aCurIndex)++; thecurve.SetPoints(aPoints[9].x,aPoints[9].y,aPoints[10].x,aPoints[10].y,aPoints[11].x,aPoints[11].y); thecurve.SubDivide(nsnull,aPolyPath,aCurIndex); break; case eCalc: thecurve.SetPoints( (aPoints[0].x+aPoints[11].x)/2.0f,(aPoints[0].y+aPoints[11].y)/2.0f, (aPoints[1].x+aPoints[10].x)/2.0f,(aPoints[1].y+aPoints[10].y)/2.0f, (aPoints[2].x+aPoints[9].x)/2.0f,(aPoints[2].y+aPoints[9].y)/2.0f); thecurve.SubDivide(nsnull,aPolyPath,aCurIndex); aPolyPath[*aCurIndex].x = (nscoord)((aPoints[3].x+aPoints[8].x)/2.0f); aPolyPath[*aCurIndex].y = (nscoord)((aPoints[3].y+aPoints[8].y)/2.0f); (*aCurIndex)++; thecurve.SetPoints( (aPoints[3].x+aPoints[8].x)/2.0f,(aPoints[3].y+aPoints[8].y)/2.0f, (aPoints[4].x+aPoints[7].x)/2.0f,(aPoints[4].y+aPoints[7].y)/2.0f, (aPoints[5].x+aPoints[6].x)/2.0f,(aPoints[5].y+aPoints[6].y)/2.0f); thecurve.SubDivide(nsnull,aPolyPath,aCurIndex); break; case eCalcRev: thecurve.SetPoints( (aPoints[5].x+aPoints[6].x)/2.0f,(aPoints[5].y+aPoints[6].y)/2.0f, (aPoints[4].x+aPoints[7].x)/2.0f,(aPoints[4].y+aPoints[7].y)/2.0f, (aPoints[3].x+aPoints[8].x)/2.0f,(aPoints[3].y+aPoints[8].y)/2.0f); thecurve.SubDivide(nsnull,aPolyPath,aCurIndex); aPolyPath[*aCurIndex].x = (nscoord)((aPoints[2].x+aPoints[9].x)/2.0f); aPolyPath[*aCurIndex].y = (nscoord)((aPoints[2].y+aPoints[9].y)/2.0f); (*aCurIndex)++; thecurve.SetPoints( (aPoints[2].x+aPoints[9].x)/2.0f,(aPoints[2].y+aPoints[9].y)/2.0f, (aPoints[1].x+aPoints[10].x)/2.0f,(aPoints[1].y+aPoints[10].y)/2.0f, (aPoints[0].x+aPoints[11].x)/2.0f,(aPoints[0].y+aPoints[11].y)/2.0f); thecurve.SubDivide(nsnull,aPolyPath,aCurIndex); break; } } /** --------------------------------------------------- * See documentation in nsCSSRendering.h * @update 4/13/99 dwc */ void QBCurve::SubDivide(nsIRenderingContext *aRenderingContext,nsPoint aPointArray[],PRInt32 *aCurIndex) { QBCurve curve1,curve2; float fx,fy,smag; // divide the curve into 2 pieces MidPointDivide(&curve1,&curve2); fx = (float)fabs(curve1.mAnc2.x - this->mCon.x); fy = (float)fabs(curve1.mAnc2.y - this->mCon.y); //smag = fx+fy-(PR_MIN(fx,fy)>>1); smag = fx*fx + fy*fy; if (smag>1){ // split the curve again curve1.SubDivide(aRenderingContext,aPointArray,aCurIndex); curve2.SubDivide(aRenderingContext,aPointArray,aCurIndex); }else{ if(aPointArray ) { // save the points for further processing aPointArray[*aCurIndex].x = (nscoord)curve1.mAnc2.x; aPointArray[*aCurIndex].y = (nscoord)curve1.mAnc2.y; (*aCurIndex)++; aPointArray[*aCurIndex].x = (nscoord)curve2.mAnc2.x; aPointArray[*aCurIndex].y = (nscoord)curve2.mAnc2.y; (*aCurIndex)++; }else{ // draw the curve nsTransform2D *aTransform; aRenderingContext->GetCurrentTransform(aTransform); aRenderingContext->DrawLine((nscoord)curve1.mAnc1.x,(nscoord)curve1.mAnc1.y,(nscoord)curve1.mAnc2.x,(nscoord)curve1.mAnc2.y); aRenderingContext->DrawLine((nscoord)curve1.mAnc2.x,(nscoord)curve1.mAnc2.y,(nscoord)curve2.mAnc2.x,(nscoord)curve2.mAnc2.y); } } } /** --------------------------------------------------- * See documentation in nsCSSRendering.h * @update 4/13/99 dwc */ void QBCurve::MidPointDivide(QBCurve *A,QBCurve *B) { float c1x,c1y,c2x,c2y; nsFloatPoint a1; c1x = (mAnc1.x+mCon.x)/2.0f; c1y = (mAnc1.y+mCon.y)/2.0f; c2x = (mAnc2.x+mCon.x)/2.0f; c2y = (mAnc2.y+mCon.y)/2.0f; a1.x = (c1x + c2x)/2.0f; a1.y = (c1y + c2y)/2.0f; // put the math into our 2 new curves A->mAnc1 = this->mAnc1; A->mCon.x = c1x; A->mCon.y = c1y; A->mAnc2 = a1; B->mAnc1 = a1; B->mCon.x = c2x; B->mCon.y = c2y; B->mAnc2 = this->mAnc2; }