// FIXME: Merge with the other drawTiled eventually, since we need a combination of both for some things.
void Image::drawTiled(GraphicsContext* ctxt, const FloatRect& dstRect, const FloatRect& srcRect, TileRule hRule, TileRule vRule, CompositeOperator op)
{
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, dstRect, solidColor(), op);
return;
}
// FIXME: We do not support 'round' yet. For now just map it to 'repeat'.
if (hRule == RoundTile)
hRule = RepeatTile;
if (vRule == RoundTile)
vRule = RepeatTile;
FloatSize scale = calculatePatternScale(dstRect, srcRect, hRule, vRule);
AffineTransform patternTransform = AffineTransform().scale(scale.width(), scale.height());
// We want to construct the phase such that the pattern is centered (when stretch is not
// set for a particular rule).
float hPhase = scale.width() * srcRect.x();
float vPhase = scale.height() * srcRect.y();
if (hRule == Image::RepeatTile)
hPhase -= fmodf(dstRect.width(), scale.width() * srcRect.width()) / 2.0f;
if (vRule == Image::RepeatTile)
vPhase -= fmodf(dstRect.height(), scale.height() * srcRect.height()) / 2.0f;
FloatPoint patternPhase(dstRect.x() - hPhase, dstRect.y() - vPhase);
drawPattern(ctxt, srcRect, patternTransform, patternPhase, op, dstRect);
startAnimation();
}
// FIXME: Merge with the other drawTiled eventually, since we need a combination of both for some things.
void Image::drawTiled(GraphicsContext* ctxt, const FloatRect& dstRect, const FloatRect& srcRect,
const FloatSize& tileScaleFactor, TileRule hRule, TileRule vRule, ColorSpace styleColorSpace, CompositeOperator op)
{
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, dstRect, solidColor(), styleColorSpace, op);
return;
}
// FIXME: We do not support 'round' or 'space' yet. For now just map them to 'repeat'.
if (hRule == RoundTile || hRule == SpaceTile)
hRule = RepeatTile;
if (vRule == RoundTile || vRule == SpaceTile)
vRule = RepeatTile;
AffineTransform patternTransform = AffineTransform().scaleNonUniform(tileScaleFactor.width(), tileScaleFactor.height());
// We want to construct the phase such that the pattern is centered (when stretch is not
// set for a particular rule).
float hPhase = tileScaleFactor.width() * srcRect.x();
float vPhase = tileScaleFactor.height() * srcRect.y();
float scaledTileWidth = tileScaleFactor.width() * srcRect.width();
float scaledTileHeight = tileScaleFactor.height() * srcRect.height();
if (hRule == Image::RepeatTile)
hPhase -= (dstRect.width() - scaledTileWidth) / 2;
if (vRule == Image::RepeatTile)
vPhase -= (dstRect.height() - scaledTileHeight) / 2;
FloatPoint patternPhase(dstRect.x() - hPhase, dstRect.y() - vPhase);
drawPattern(ctxt, srcRect, patternTransform, patternPhase, styleColorSpace, op, dstRect);
startAnimation();
}
// FIXME: Merge with the other drawTiled eventually, since we need a combination of both for some things.
void Image::drawTiled(GraphicsContext* ctxt, const FloatRect& dstRect, const FloatRect& srcRect,
const FloatSize& providedTileScaleFactor, TileRule hRule, TileRule vRule, CompositeOperator op)
{
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, dstRect, solidColor(), op);
return;
}
// FIXME: We do not support 'space' yet. For now just map it to 'repeat'.
if (hRule == SpaceTile)
hRule = RepeatTile;
if (vRule == SpaceTile)
vRule = RepeatTile;
// FIXME: if this code is used for background-repeat: round (in addition to
// border-image-repeat), then add logic to deal with the background-size: auto
// special case. The aspect ratio should be maintained in this case.
FloatSize tileScaleFactor = providedTileScaleFactor;
bool useLowInterpolationQuality = false;
if (hRule == RoundTile) {
float hRepetitions = std::max(1.0f, roundf(dstRect.width() / (tileScaleFactor.width() * srcRect.width())));
tileScaleFactor.setWidth(dstRect.width() / (srcRect.width() * hRepetitions));
}
if (vRule == RoundTile) {
float vRepetitions = std::max(1.0f, roundf(dstRect.height() / (tileScaleFactor.height() * srcRect.height())));
tileScaleFactor.setHeight(dstRect.height() / (srcRect.height() * vRepetitions));
}
if (hRule == RoundTile || vRule == RoundTile) {
// High interpolation quality rounds the scaled tile to an integer size (see Image::drawPattern).
// To avoid causing a visual problem, linear interpolation must be used instead.
// FIXME: Allow using high-quality interpolation in this case, too.
useLowInterpolationQuality = true;
}
// We want to construct the phase such that the pattern is centered (when stretch is not
// set for a particular rule).
float hPhase = tileScaleFactor.width() * srcRect.x();
float vPhase = tileScaleFactor.height() * srcRect.y();
float scaledTileWidth = tileScaleFactor.width() * srcRect.width();
float scaledTileHeight = tileScaleFactor.height() * srcRect.height();
if (hRule == Image::RepeatTile)
hPhase -= (dstRect.width() - scaledTileWidth) / 2;
if (vRule == Image::RepeatTile)
vPhase -= (dstRect.height() - scaledTileHeight) / 2;
FloatPoint patternPhase(dstRect.x() - hPhase, dstRect.y() - vPhase);
if (useLowInterpolationQuality) {
InterpolationQuality previousInterpolationQuality = ctxt->imageInterpolationQuality();
ctxt->setImageInterpolationQuality(InterpolationLow);
drawPattern(ctxt, srcRect, tileScaleFactor, patternPhase, op, dstRect);
ctxt->setImageInterpolationQuality(previousInterpolationQuality);
} else {
drawPattern(ctxt, srcRect, tileScaleFactor, patternPhase, op, dstRect);
}
startAnimation();
}
// FIXME: Merge with the other drawTiled eventually, since we need a combination of both for some things.
void Image::drawTiled(GraphicsContext& ctxt, const FloatRect& dstRect, const FloatRect& srcRect,
const FloatSize& tileScaleFactor, TileRule hRule, TileRule vRule, CompositeOperator op)
{
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, dstRect, solidColor(), op);
return;
}
FloatSize tileScale = tileScaleFactor;
FloatSize spacing;
// FIXME: These rules follow CSS border-image rules, but they should not be down here in Image.
bool centerOnGapHorizonally = false;
bool centerOnGapVertically = false;
switch (hRule) {
case RoundTile: {
int numItems = std::max<int>(floorf(dstRect.width() / srcRect.width()), 1);
tileScale.setWidth(dstRect.width() / (srcRect.width() * numItems));
break;
}
case SpaceTile: {
int numItems = floorf(dstRect.width() / srcRect.width());
if (!numItems)
return;
spacing.setWidth((dstRect.width() - srcRect.width() * numItems) / (numItems + 1));
tileScale.setWidth(1);
centerOnGapHorizonally = !(numItems & 1);
break;
}
case StretchTile:
case RepeatTile:
break;
}
switch (vRule) {
case RoundTile: {
int numItems = std::max<int>(floorf(dstRect.height() / srcRect.height()), 1);
tileScale.setHeight(dstRect.height() / (srcRect.height() * numItems));
break;
}
case SpaceTile: {
int numItems = floorf(dstRect.height() / srcRect.height());
if (!numItems)
return;
spacing.setHeight((dstRect.height() - srcRect.height() * numItems) / (numItems + 1));
tileScale.setHeight(1);
centerOnGapVertically = !(numItems & 1);
break;
}
case StretchTile:
case RepeatTile:
break;
}
AffineTransform patternTransform = AffineTransform().scaleNonUniform(tileScale.width(), tileScale.height());
// We want to construct the phase such that the pattern is centered (when stretch is not
// set for a particular rule).
float hPhase = tileScale.width() * srcRect.x();
float vPhase = tileScale.height() * srcRect.y();
float scaledTileWidth = tileScale.width() * srcRect.width();
float scaledTileHeight = tileScale.height() * srcRect.height();
if (centerOnGapHorizonally)
hPhase -= spacing.width();
else if (hRule == Image::RepeatTile || hRule == Image::SpaceTile)
hPhase -= (dstRect.width() - scaledTileWidth) / 2;
if (centerOnGapVertically)
vPhase -= spacing.height();
else if (vRule == Image::RepeatTile || vRule == Image::SpaceTile)
vPhase -= (dstRect.height() - scaledTileHeight) / 2;
FloatPoint patternPhase(dstRect.x() - hPhase, dstRect.y() - vPhase);
drawPattern(ctxt, srcRect, patternTransform, patternPhase, spacing, op, dstRect);
#if PLATFORM(IOS)
startAnimation(DoNotCatchUp);
#else
startAnimation();
#endif
}
// TODO(cavalcantii): see crbug.com/662504.
void Image::drawTiled(GraphicsContext& ctxt,
const FloatRect& dstRect,
const FloatRect& srcRect,
const FloatSize& providedTileScaleFactor,
TileRule hRule,
TileRule vRule,
SkBlendMode op) {
// TODO(cavalcantii): see crbug.com/662513.
FloatSize tileScaleFactor = providedTileScaleFactor;
if (vRule == RoundTile) {
float vRepetitions =
std::max(1.0f, roundf(dstRect.height() /
(tileScaleFactor.height() * srcRect.height())));
tileScaleFactor.setHeight(dstRect.height() /
(srcRect.height() * vRepetitions));
}
if (hRule == RoundTile) {
float hRepetitions = std::max(
1.0f,
roundf(dstRect.width() / (tileScaleFactor.width() * srcRect.width())));
tileScaleFactor.setWidth(dstRect.width() /
(srcRect.width() * hRepetitions));
}
// We want to construct the phase such that the pattern is centered (when
// stretch is not set for a particular rule).
float vPhase = tileScaleFactor.height() * srcRect.y();
float hPhase = tileScaleFactor.width() * srcRect.x();
if (vRule == Image::RepeatTile) {
float scaledTileHeight = tileScaleFactor.height() * srcRect.height();
vPhase -= (dstRect.height() - scaledTileHeight) / 2;
}
if (hRule == Image::RepeatTile) {
float scaledTileWidth = tileScaleFactor.width() * srcRect.width();
hPhase -= (dstRect.width() - scaledTileWidth) / 2;
}
FloatSize spacing;
auto calculateSpaceNeeded = [](
const float destination, const float source) -> std::tuple<bool, float> {
DCHECK_GT(source, 0);
DCHECK_GT(destination, 0);
float repeatTilesCount = floorf(destination / source);
if (!repeatTilesCount)
return std::make_tuple(false, -1);
float space = destination;
space -= source * repeatTilesCount;
space /= repeatTilesCount + 1.0;
return std::make_tuple(true, space);
};
if (vRule == SpaceTile) {
std::tuple<bool, float> space =
calculateSpaceNeeded(dstRect.height(), srcRect.height());
if (!std::get<0>(space))
return;
spacing.setHeight(std::get<1>(space));
tileScaleFactor.setHeight(1.0);
vPhase = srcRect.y();
vPhase -= spacing.height();
}
if (hRule == SpaceTile) {
std::tuple<bool, float> space =
calculateSpaceNeeded(dstRect.width(), srcRect.width());
if (!std::get<0>(space))
return;
spacing.setWidth(std::get<1>(space));
tileScaleFactor.setWidth(1.0);
hPhase = srcRect.x();
hPhase -= spacing.width();
}
FloatPoint patternPhase(dstRect.x() - hPhase, dstRect.y() - vPhase);
// TODO(cavalcantii): see crbug.com/662507.
if ((hRule == RoundTile || vRule == RoundTile)) {
InterpolationQuality previousInterpolationQuality =
ctxt.imageInterpolationQuality();
ctxt.setImageInterpolationQuality(InterpolationLow);
drawPattern(ctxt, srcRect, tileScaleFactor, patternPhase, op, dstRect);
ctxt.setImageInterpolationQuality(previousInterpolationQuality);
} else {
drawPattern(ctxt, srcRect, tileScaleFactor, patternPhase, op, dstRect,
spacing);
}
startAnimation();
}