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Improvements for invert outline colors (Mac and Linux work now). b=73884 r=kmcclusk sr=kin

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This commit is contained in:
attinasi@netscape.com
2001-10-03 00:08:25 +00:00
parent 7ada6c8a67
commit dca2526f76
2 changed files with 122 additions and 34 deletions
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78
layout/base/nsCSSRendering.cpp
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@@ -82,6 +82,10 @@ static void TileImage(nsIRenderingContext& aRC,nsDrawingSurface aDS,nsRect &aSr
static PRBool GetBGColorForHTMLElement(nsIPresContext *aPresContext,const nsStyleColor *&aBGColor);
static nsresult GetFrameForBackgroundUpdate(nsIPresContext *aPresContext,nsIFrame *aFrame, nsIFrame **aBGFrame);
// FillRect or InvertRect depending on the renderingaInvert parameter
static void FillOrInvertRect(nsIRenderingContext& aRC,nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight, PRBool aInvert);
static void FillOrInvertRect(nsIRenderingContext& aRC,const nsRect& aRect, PRBool aInvert);
// 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,
@@ -115,6 +119,14 @@ void nsCSSRendering::FillPolygon (nsIRenderingContext& aContext,
PRInt32 aNumPoints,
nsRect* aGap)
{
#ifdef DEBUG
nsPenMode penMode;
aContext.GetPenMode(penMode);
if (penMode == nsPenMode_kInvert) {
NS_WARNING( "Invert mode ignored in FillPolygon" );
}
#endif
if (nsnull == aGap) {
aContext.FillPolygon(aPoints, aNumPoints);
} else if (4 == aNumPoints) {
@@ -771,6 +783,7 @@ nscoord xstart,xwidth,ystart,ywidth,temp,temp1,adjust;
PRBool bSolid = PR_TRUE;
float over = 0.0f;
PRBool skippedSide = PR_FALSE;
const nscolor kBlackColor = NS_RGB(0,0,0);
NS_ASSERTION((aDoOutline && aOutlineStyle) || (!aDoOutline && aBorderStyle), "null params not allowed");
PRUint8 style = aDoOutline
@@ -821,9 +834,16 @@ PRBool skippedSide = PR_FALSE;
dashLength = DOT_LENGTH;
}
nscolor sideColor;
nscolor sideColor(kBlackColor); // default to black in case color cannot be resolved
// (because invert is not supported on cur platform)
PRBool isInvert=PR_FALSE;
if (aDoOutline) {
aOutlineStyle->GetOutlineColor(sideColor);
// see if the outline color is 'invert'
if (aOutlineStyle->GetOutlineInvert()) {
isInvert = PR_TRUE;
} else {
aOutlineStyle->GetOutlineColor(sideColor);
}
} else {
PRBool transparent;
PRBool foreground;
@@ -834,6 +854,7 @@ PRBool skippedSide = PR_FALSE;
continue; // side is transparent
}
aContext.SetColor(sideColor);
switch (whichSide) {
case NS_SIDE_RIGHT:
case NS_SIDE_LEFT:
@@ -863,15 +884,15 @@ PRBool skippedSide = PR_FALSE;
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);
FillOrInvertRect(aContext, dashRect.x, borderOutside.y,dashRect.width, dashRect.height-adjust,isInvert);
FillOrInvertRect(aContext,dashRect.x,(borderOutside.YMost()-(dashRect.height-adjust)),dashRect.width, dashRect.height-adjust,isInvert);
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);
FillOrInvertRect(aContext, dashRect.x, borderOutside.y,dashRect.width, dashRect.height+adjust,isInvert);
FillOrInvertRect(aContext, dashRect.x,(borderOutside.YMost()-(dashRect.height+adjust)),dashRect.width, dashRect.height+adjust,isInvert);
currRect.y += (dashRect.height+adjust);
temp = temp-= (dashRect.height+adjust);
}
@@ -891,7 +912,7 @@ PRBool skippedSide = PR_FALSE;
while(currRect.y<temp) {
//draw if necessary
if (bSolid) {
aContext.FillRect(currRect);
FillOrInvertRect(aContext, currRect,isInvert);
}
bSolid = PRBool(!bSolid);
@@ -929,15 +950,15 @@ PRBool skippedSide = PR_FALSE;
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);
FillOrInvertRect(aContext, borderOutside.x,dashRect.y,dashRect.width-adjust,dashRect.height,isInvert);
FillOrInvertRect(aContext, (borderOutside.XMost()-(dashRect.width-adjust)),dashRect.y,dashRect.width-adjust,dashRect.height,isInvert);
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);
FillOrInvertRect(aContext, borderOutside.x,dashRect.y,dashRect.width+adjust,dashRect.height,isInvert);
FillOrInvertRect(aContext, (borderOutside.XMost()-(dashRect.width+adjust)),dashRect.y,dashRect.width+adjust,dashRect.height,isInvert);
currRect.x += (dashRect.width+adjust);
temp = temp-= (dashRect.width+adjust);
}
@@ -958,7 +979,7 @@ PRBool skippedSide = PR_FALSE;
while(currRect.x<temp) {
//draw if necessary
if (bSolid) {
aContext.FillRect(currRect);
FillOrInvertRect(aContext, currRect,isInvert);
}
bSolid = PRBool(!bSolid);
@@ -1849,13 +1870,16 @@ nscoord width;
aPresContext->GetPixelsToTwips(&p2t);/* XXX */
twipsPerPixel = (nscoord) p2t;/* XXX */
nscolor outlineColor;
PRBool canDraw,modeChanged=PR_FALSE;
nscolor outlineColor(NS_RGB(0,0,0)); // default to black in case it is invert color and the platform does not support that
PRBool canDraw = PR_FALSE;
PRBool modeChanged=PR_FALSE;
// see if the outline color is 'invert' or can invert.
if (aOutlineStyle.GetOutlineInvert() && NS_SUCCEEDED(aRenderingContext.SetPenMode(nsPenMode_kInvert)) ) {
if (aOutlineStyle.GetOutlineInvert()) {
canDraw = PR_TRUE;
modeChanged=PR_TRUE;
if( NS_SUCCEEDED(aRenderingContext.SetPenMode(nsPenMode_kInvert)) ) {
modeChanged=PR_TRUE;
}
} else {
canDraw = aOutlineStyle.GetOutlineColor(outlineColor);
}
@@ -1884,7 +1908,8 @@ nscoord width;
outlineColor,
bgColor->mBackgroundColor,outside, inside,aSkipSides,
twipsPerPixel, aGap);
if(PR_TRUE == modeChanged ) {
if(modeChanged ) {
aRenderingContext.SetPenMode(nsPenMode_kNone);
}
}
@@ -3342,3 +3367,22 @@ nsFloatPoint a1;
B->mCon.y = c2y;
B->mAnc2 = this->mAnc2;
}
void FillOrInvertRect(nsIRenderingContext& aRC, nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight, PRBool aInvert)
{
if (aInvert) {
aRC.InvertRect(aX, aY, aWidth, aHeight);
} else {
aRC.FillRect(aX, aY, aWidth, aHeight);
}
}
void FillOrInvertRect(nsIRenderingContext& aRC, const nsRect& aRect, PRBool aInvert)
{
if (aInvert) {
aRC.InvertRect(aRect);
} else {
aRC.FillRect(aRect);
}
}