зеркало из https://github.com/mozilla/pjs.git
Changed PaintBackground() so it doesn't always render the background color when
there's a background image that doesn't tile the entire bounds
This commit is contained in:
troy%netscape.com
Родитель
1ba9e038c3
Коммит
68d280876e
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@ -1848,15 +1848,14 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
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{
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PRInt16 theRadius;
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nsStyleCoord borderRadius;
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PRBool transparentBG = NS_STYLE_BG_COLOR_TRANSPARENT ==
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(aColor.mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT);
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if (0 < aColor.mBackgroundImage.Length()) {
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// Lookup the image
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nsSize imageSize;
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nsIImage* image = nsnull;
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nsIFrameImageLoader* loader = nsnull;
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PRBool transparentBG = NS_STYLE_BG_COLOR_TRANSPARENT ==
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(aColor.mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT);
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nsresult rv = aPresContext.StartLoadImage(aColor.mBackgroundImage,
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transparentBG
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? nsnull
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@ -1869,6 +1868,8 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
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NS_IF_RELEASE(loader);
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// Redraw will happen later
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if (!transparentBG) {
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// The background color is rendered over the 'border' 'padding' and
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// 'content' areas
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aRenderingContext.SetColor(aColor.mBackgroundColor);
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aRenderingContext.FillRect(aBorderArea);
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}
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@ -1877,20 +1878,6 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
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loader->GetSize(imageSize);
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NS_RELEASE(loader);
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PRBool needBackgroundColor = PR_FALSE;
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#if XXX
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// XXX enable this code as soon as nsIImage can support it
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if (image->NeedsBlend()) {
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needBackgroundColor = PR_TRUE;
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}
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#endif
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nscoord tileWidth = imageSize.width;
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nscoord tileHeight = imageSize.height;
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if ((tileWidth == 0) || (tileHeight == 0)) {
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return;
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}
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// Background images are tiled over the 'content' and 'padding' areas
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// only (not the 'border' area)
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nsRect paddingArea(aBorderArea);
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@ -1904,47 +1891,53 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
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// The actual dirty rect is the intersection of the padding area and the
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// dirty rect we were given
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nsRect dirtyRect;
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if (!dirtyRect.IntersectRect(paddingArea, aDirtyRect)) {
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// Nothing to paint
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return;
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}
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dirtyRect.IntersectRect(paddingArea, aDirtyRect);
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// Based on the repeat setting, compute how many tiles we should
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// lay down for each axis. The value computed is the maximum based
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// on the dirty rect before accounting for the background-position.
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nscoord tileWidth = imageSize.width;
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nscoord tileHeight = imageSize.height;
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PRBool needBackgroundColor = PR_TRUE;
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PRIntn repeat = aColor.mBackgroundRepeat;
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nscoord xDistance, yDistance;
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switch (repeat) {
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case NS_STYLE_BG_REPEAT_OFF:
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default:
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xDistance = tileWidth;
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yDistance = tileHeight;
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needBackgroundColor = PR_TRUE;
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break;
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case NS_STYLE_BG_REPEAT_X:
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xDistance = dirtyRect.width;
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yDistance = tileHeight;
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needBackgroundColor = PR_TRUE;
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break;
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case NS_STYLE_BG_REPEAT_Y:
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xDistance = tileWidth;
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yDistance = dirtyRect.height;
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needBackgroundColor = PR_TRUE;
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break;
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case NS_STYLE_BG_REPEAT_XY:
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xDistance = dirtyRect.width;
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yDistance = dirtyRect.height;
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// We need to render the background color if the image is transparent
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PRUint8* alphaBits = image->GetAlphaBits();
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needBackgroundColor = alphaBits != nsnull;
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break;
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}
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// The background color is rendered over the 'border' 'padding' and
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// 'content' areas
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if (needBackgroundColor) {
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if (!transparentBG && needBackgroundColor) {
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aRenderingContext.SetColor(aColor.mBackgroundColor);
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aRenderingContext.FillRect(aBorderArea);
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}
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// See if there's nothing left to do
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if ((tileWidth == 0) || (tileHeight == 0) || dirtyRect.IsEmpty()) {
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// Nothing to paint
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return;
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}
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// If it's a fixed background attachment, then get the nearest scrolling
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// ancestor
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nsIFrame* scrollFrame = nsnull;
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@ -2138,11 +2131,7 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
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} else {
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// See if there's a background color specified. The background color
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// is rendered over the 'border' 'padding' and 'content' areas
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if (0 == (aColor.mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT)) {
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// XXX This step can be avoided if we have an image and it doesn't
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// have any transparent pixels, and the image is tiled in both
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// the x and the y
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if (!transparentBG) {
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// check to see if we have a radius
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borderRadius = aSpacing.mBorderRadius;
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theRadius = 0;
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@ -1848,15 +1848,14 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
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{
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PRInt16 theRadius;
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nsStyleCoord borderRadius;
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PRBool transparentBG = NS_STYLE_BG_COLOR_TRANSPARENT ==
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(aColor.mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT);
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if (0 < aColor.mBackgroundImage.Length()) {
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// Lookup the image
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nsSize imageSize;
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nsIImage* image = nsnull;
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nsIFrameImageLoader* loader = nsnull;
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PRBool transparentBG = NS_STYLE_BG_COLOR_TRANSPARENT ==
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(aColor.mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT);
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nsresult rv = aPresContext.StartLoadImage(aColor.mBackgroundImage,
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transparentBG
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? nsnull
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@ -1869,6 +1868,8 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
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NS_IF_RELEASE(loader);
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// Redraw will happen later
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if (!transparentBG) {
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// The background color is rendered over the 'border' 'padding' and
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// 'content' areas
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aRenderingContext.SetColor(aColor.mBackgroundColor);
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aRenderingContext.FillRect(aBorderArea);
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}
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@ -1877,20 +1878,6 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
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loader->GetSize(imageSize);
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NS_RELEASE(loader);
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PRBool needBackgroundColor = PR_FALSE;
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#if XXX
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// XXX enable this code as soon as nsIImage can support it
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if (image->NeedsBlend()) {
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needBackgroundColor = PR_TRUE;
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}
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#endif
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nscoord tileWidth = imageSize.width;
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nscoord tileHeight = imageSize.height;
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if ((tileWidth == 0) || (tileHeight == 0)) {
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return;
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}
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// Background images are tiled over the 'content' and 'padding' areas
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// only (not the 'border' area)
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nsRect paddingArea(aBorderArea);
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@ -1904,47 +1891,53 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
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// The actual dirty rect is the intersection of the padding area and the
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// dirty rect we were given
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nsRect dirtyRect;
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if (!dirtyRect.IntersectRect(paddingArea, aDirtyRect)) {
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// Nothing to paint
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return;
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}
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dirtyRect.IntersectRect(paddingArea, aDirtyRect);
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// Based on the repeat setting, compute how many tiles we should
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// lay down for each axis. The value computed is the maximum based
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// on the dirty rect before accounting for the background-position.
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nscoord tileWidth = imageSize.width;
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nscoord tileHeight = imageSize.height;
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PRBool needBackgroundColor = PR_TRUE;
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PRIntn repeat = aColor.mBackgroundRepeat;
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nscoord xDistance, yDistance;
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switch (repeat) {
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case NS_STYLE_BG_REPEAT_OFF:
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default:
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xDistance = tileWidth;
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yDistance = tileHeight;
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needBackgroundColor = PR_TRUE;
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break;
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case NS_STYLE_BG_REPEAT_X:
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xDistance = dirtyRect.width;
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yDistance = tileHeight;
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needBackgroundColor = PR_TRUE;
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break;
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case NS_STYLE_BG_REPEAT_Y:
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xDistance = tileWidth;
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yDistance = dirtyRect.height;
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needBackgroundColor = PR_TRUE;
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break;
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case NS_STYLE_BG_REPEAT_XY:
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xDistance = dirtyRect.width;
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yDistance = dirtyRect.height;
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// We need to render the background color if the image is transparent
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PRUint8* alphaBits = image->GetAlphaBits();
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needBackgroundColor = alphaBits != nsnull;
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break;
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}
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// The background color is rendered over the 'border' 'padding' and
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// 'content' areas
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if (needBackgroundColor) {
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if (!transparentBG && needBackgroundColor) {
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aRenderingContext.SetColor(aColor.mBackgroundColor);
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aRenderingContext.FillRect(aBorderArea);
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}
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// See if there's nothing left to do
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if ((tileWidth == 0) || (tileHeight == 0) || dirtyRect.IsEmpty()) {
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// Nothing to paint
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return;
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}
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// If it's a fixed background attachment, then get the nearest scrolling
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// ancestor
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nsIFrame* scrollFrame = nsnull;
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@ -2138,11 +2131,7 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
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} else {
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// See if there's a background color specified. The background color
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// is rendered over the 'border' 'padding' and 'content' areas
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if (0 == (aColor.mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT)) {
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// XXX This step can be avoided if we have an image and it doesn't
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// have any transparent pixels, and the image is tiled in both
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// the x and the y
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if (!transparentBG) {
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// check to see if we have a radius
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borderRadius = aSpacing.mBorderRadius;
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theRadius = 0;
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