NS_ComposeColors(nscolor aBG, nscolor aFG)
{
// This function uses colors that are non premultiplied alpha.
PRIntn r, g, b, a;
PRIntn bgAlpha = NS_GET_A(aBG);
PRIntn fgAlpha = NS_GET_A(aFG);
// Compute the final alpha of the blended color
// a = fgAlpha + bgAlpha*(255 - fgAlpha)/255;
FAST_DIVIDE_BY_255(a, bgAlpha*(255-fgAlpha));
a = fgAlpha + a;
PRIntn blendAlpha;
if (a == 0) {
// In this case the blended color is totally trasparent,
// we preserve the color information of the foreground color.
blendAlpha = 255;
} else {
blendAlpha = (fgAlpha*255)/a;
}
MOZ_BLEND(r, NS_GET_R(aBG), NS_GET_R(aFG), blendAlpha);
MOZ_BLEND(g, NS_GET_G(aBG), NS_GET_G(aFG), blendAlpha);
MOZ_BLEND(b, NS_GET_B(aBG), NS_GET_B(aFG), blendAlpha);
return NS_RGBA(r, g, b, a);
}
extern "C" NS_GFX_(nscolor) NS_DarkenColor(nscolor inColor)
{
PRIntn r, g, b, max;
r = NS_GET_R(inColor);
g = NS_GET_G(inColor);
b = NS_GET_B(inColor);
//10% of max color decrease across the board
r -= 25;
g -= 25;
b -= 25;
//figure out which color is largest
if (r > g)
{
if (b > r)
max = b;
else
max = r;
}
else
{
if (b > g)
max = b;
else
max = g;
}
//if we underflowed on this max color, decrease
//other components by the underflow amount
if (max < 0)
{
if (max == r)
{
g += max;
b += max;
}
else if (max == g)
{
r += max;
b += max;
}
else
{
r += max;
g += max;
}
}
//clamp
if (r < 0)
r = 0;
if (g < 0)
g = 0;
if (b < 0)
b = 0;
return NS_RGBA(r, g, b, NS_GET_A(inColor));
}
// Function to convert RGB color space into the HSV colorspace
// Hue is the primary color defined from 0 to 359 degrees
// Saturation is defined from 0 to 255. The higher the number.. the deeper
// the color Value is the brightness of the color. 0 is black, 255 is white.
void NS_RGB2HSV(nscolor aColor, uint16_t &aHue, uint16_t &aSat,
uint16_t &aValue, uint8_t &aAlpha)
{
uint8_t r, g, b;
int16_t delta, min, max, r1, b1, g1;
float hue;
r = NS_GET_R(aColor);
g = NS_GET_G(aColor);
b = NS_GET_B(aColor);
if (r>g) {
max = r;
min = g;
} else {
max = g;
min = r;
}
if (b>max) {
max = b;
}
if (b<min) {
min = b;
}
// value or brightness will always be the max of all the colors(RGB)
aValue = max;
delta = max-min;
aSat = (max!=0)?((delta*255)/max):0;
r1 = r;
b1 = b;
g1 = g;
if (aSat==0) {
hue = 1000;
} else {
if(r==max){
hue=(float)(g1-b1)/(float)delta;
} else if (g1==max) {
hue= 2.0f+(float)(b1-r1)/(float)delta;
} else {
hue = 4.0f+(float)(r1-g1)/(float)delta;
}
}
if(hue<999) {
hue*=60;
if(hue<0){
hue+=360;
}
} else {
hue=0;
}
aHue = (uint16_t)hue;
aAlpha = NS_GET_A(aColor);
}
GdkRGBA nsColorPicker::convertToRgbaColor(nscolor color) {
GdkRGBA result = { convertToGdkRgbaComponent(NS_GET_R(color)),
convertToGdkRgbaComponent(NS_GET_G(color)),
convertToGdkRgbaComponent(NS_GET_B(color)),
convertToGdkRgbaComponent(NS_GET_A(color)) };
return result;
}
static void
SetupCairoColor(gfxContext *aContext, nscolor aRGB, float aOpacity)
{
aContext->SetColor(gfxRGBA(NS_GET_R(aRGB)/255.0,
NS_GET_G(aRGB)/255.0,
NS_GET_B(aRGB)/255.0,
NS_GET_A(aRGB)/255.0 * aOpacity));
}
NS_ComposeColors(nscolor aBG, nscolor aFG)
{
PRIntn bgAlpha = NS_GET_A(aBG);
PRIntn r, g, b, a;
// First compute what we get drawing aBG onto RGBA(0,0,0,0)
MOZ_BLEND(r, 0, NS_GET_R(aBG), bgAlpha);
MOZ_BLEND(g, 0, NS_GET_G(aBG), bgAlpha);
MOZ_BLEND(b, 0, NS_GET_B(aBG), bgAlpha);
a = bgAlpha;
// Now draw aFG on top of that
PRIntn fgAlpha = NS_GET_A(aFG);
MOZ_BLEND(r, r, NS_GET_R(aFG), fgAlpha);
MOZ_BLEND(g, g, NS_GET_G(aFG), fgAlpha);
MOZ_BLEND(b, b, NS_GET_B(aFG), fgAlpha);
MOZ_BLEND(a, a, 255, fgAlpha);
return NS_RGBA(r, g, b, a);
}
void
nsDisplayCanvasBackgroundColor::Paint(nsDisplayListBuilder* aBuilder,
nsRenderingContext* aCtx)
{
nsCanvasFrame* frame = static_cast<nsCanvasFrame*>(mFrame);
nsPoint offset = ToReferenceFrame();
nsRect bgClipRect = frame->CanvasArea() + offset;
if (NS_GET_A(mColor) > 0) {
aCtx->SetColor(mColor);
aCtx->FillRect(bgClipRect);
}
}
int32_t NS_GetLuminosity(nscolor aColor)
{
// When aColor is not opaque, the perceived luminosity will depend
// on what color(s) aColor is ultimately drawn on top of, which we
// do not know.
NS_ASSERTION(NS_GET_A(aColor) == 255,
"impossible to compute luminosity of a non-opaque color");
return (NS_GET_R(aColor) * RED_LUMINOSITY +
NS_GET_G(aColor) * GREEN_LUMINOSITY +
NS_GET_B(aColor) * BLUE_LUMINOSITY);
}
bool nsCSSValue::IsNonTransparentColor() const
{
// We have the value in the form it was specified in at this point, so we
// have to look for both the keyword 'transparent' and its equivalent in
// rgba notation.
nsDependentString buf;
return
(mUnit == eCSSUnit_Color && NS_GET_A(GetColorValue()) > 0) ||
(mUnit == eCSSUnit_Ident &&
!nsGkAtoms::transparent->Equals(GetStringValue(buf))) ||
(mUnit == eCSSUnit_EnumColor);
}
void
nsDisplayCanvasBackground::Paint(nsDisplayListBuilder* aBuilder,
nsRenderingContext* aCtx)
{
nsCanvasFrame* frame = static_cast<nsCanvasFrame*>(mFrame);
nsPoint offset = ToReferenceFrame();
nsRect bgClipRect = frame->CanvasArea() + offset;
if (mIsBottommostLayer && NS_GET_A(mExtraBackgroundColor) > 0) {
aCtx->SetColor(mExtraBackgroundColor);
aCtx->FillRect(bgClipRect);
}
bool snap;
nsRect bounds = GetBounds(aBuilder, &snap);
nsRenderingContext context;
nsRefPtr<gfxContext> dest = aCtx->ThebesContext();
nsRefPtr<gfxASurface> surf;
nsRefPtr<gfxContext> ctx;
#ifndef MOZ_GFX_OPTIMIZE_MOBILE
if (IsSingleFixedPositionImage(aBuilder, bgClipRect) && aBuilder->IsPaintingToWindow() && !aBuilder->IsCompositingCheap()) {
surf = static_cast<gfxASurface*>(GetUnderlyingFrame()->Properties().Get(nsIFrame::CachedBackgroundImage()));
nsRefPtr<gfxASurface> destSurf = dest->CurrentSurface();
if (surf && surf->GetType() == destSurf->GetType()) {
BlitSurface(dest, mDestRect, surf);
return;
}
surf = destSurf->CreateSimilarSurface(gfxASurface::CONTENT_COLOR_ALPHA, gfxIntSize(ceil(mDestRect.width), ceil(mDestRect.height)));
if (surf) {
ctx = new gfxContext(surf);
ctx->Translate(-gfxPoint(mDestRect.x, mDestRect.y));
context.Init(aCtx->DeviceContext(), ctx);
}
}
#endif
nsCSSRendering::PaintBackground(mFrame->PresContext(), surf ? context : *aCtx, mFrame,
surf ? bounds : mVisibleRect,
nsRect(offset, mFrame->GetSize()),
aBuilder->GetBackgroundPaintFlags(),
&bgClipRect, mLayer);
if (surf) {
BlitSurface(dest, mDestRect, surf);
GetUnderlyingFrame()->Properties().Set(nsIFrame::CachedBackgroundImage(), surf.forget().get());
GetUnderlyingFrame()->AddStateBits(NS_FRAME_HAS_CACHED_BACKGROUND);
}
}
PRBool
nsDisplayBackground::IsOpaque(nsDisplayListBuilder* aBuilder) {
// theme background overrides any other background
if (mIsThemed)
return PR_FALSE;
PRBool isCanvas;
const nsStyleBackground* bg;
PRBool hasBG =
nsCSSRendering::FindBackground(mFrame->PresContext(), mFrame, &bg, &isCanvas);
if (!hasBG || (bg->mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT) ||
bg->mBackgroundClip != NS_STYLE_BG_CLIP_BORDER ||
nsLayoutUtils::HasNonZeroSide(mFrame->GetStyleBorder()->mBorderRadius) ||
NS_GET_A(bg->mBackgroundColor) < 255)
return PR_FALSE;
return PR_TRUE;
}
bool
nsBGColorTextAttr::GetColor(nsIFrame *aFrame, nscolor *aColor)
{
const nsStyleBackground *styleBackground = aFrame->GetStyleBackground();
if (NS_GET_A(styleBackground->mBackgroundColor) > 0) {
*aColor = styleBackground->mBackgroundColor;
return true;
}
nsIFrame *parentFrame = aFrame->GetParent();
if (!parentFrame) {
*aColor = aFrame->PresContext()->DefaultBackgroundColor();
return true;
}
// Each frame of parents chain for the initially passed 'aFrame' has
// transparent background color. So background color isn't changed from
// 'mRootFrame' to initially passed 'aFrame'.
if (parentFrame == mRootFrame)
return false;
return GetColor(parentFrame, aColor);
}
int main(int argc, char** argv)
{
ScopedXPCOM xpcom("TestColorNames");
if (xpcom.failed())
return 1;
nscolor rgb;
int rv = 0;
// First make sure we can find all of the tags that are supposed to
// be in the table. Futz with the case to make sure any case will
// work
for (PRUint32 index = 0 ; index < ArrayLength(kColorNames); index++) {
// Lookup color by name and make sure it has the right id
nsCString tagName(kColorNames[index]);
// Check that color lookup by name gets the right rgb value
if (!NS_ColorNameToRGB(NS_ConvertASCIItoUTF16(tagName), &rgb)) {
fail("can't find '%s'", tagName.get());
rv = 1;
}
if (rgb != kColors[index]) {
fail("name='%s' ColorNameToRGB=%x kColors[%d]=%08x",
tagName.get(), rgb, index, kColors[index]);
rv = 1;
}
// fiddle with the case to make sure we can still find it
tagName.SetCharAt(tagName.CharAt(0) - 32, 0);
if (!NS_ColorNameToRGB(NS_ConvertASCIItoUTF16(tagName), &rgb)) {
fail("can't find '%s'", tagName.get());
rv = 1;
}
if (rgb != kColors[index]) {
fail("name='%s' ColorNameToRGB=%x kColors[%d]=%08x",
tagName.get(), rgb, index, kColors[index]);
rv = 1;
}
// Check that parsing an RGB value in hex gets the right values
PRUint8 r = NS_GET_R(rgb);
PRUint8 g = NS_GET_G(rgb);
PRUint8 b = NS_GET_B(rgb);
PRUint8 a = NS_GET_A(rgb);
if (a != PR_UINT8_MAX) {
// NS_HexToRGB() can not handle a color with alpha channel
rgb = NS_RGB(r, g, b);
}
char cbuf[50];
PR_snprintf(cbuf, sizeof(cbuf), "%02x%02x%02x", r, g, b);
nscolor hexrgb;
if (!NS_HexToRGB(NS_ConvertASCIItoUTF16(cbuf), &hexrgb)) {
fail("hex conversion to color of '%s'", cbuf);
rv = 1;
}
if (hexrgb != rgb) {
fail("rgb=%x hexrgb=%x", rgb, hexrgb);
rv = 1;
}
}
// Now make sure we don't find some garbage
for (PRUint32 i = 0; i < ArrayLength(kJunkNames); i++) {
nsCString tag(kJunkNames[i]);
if (NS_ColorNameToRGB(NS_ConvertASCIItoUTF16(tag), &rgb)) {
fail("found '%s'", kJunkNames[i] ? kJunkNames[i] : "(null)");
rv = 1;
}
}
if (rv == 0)
passed("TestColorNames");
return rv;
}
void
nsCSSValue::AppendToString(nsCSSProperty aProperty, nsAString& aResult) const
{
// eCSSProperty_UNKNOWN gets used for some recursive calls below.
NS_ABORT_IF_FALSE((0 <= aProperty &&
aProperty <= eCSSProperty_COUNT_no_shorthands) ||
aProperty == eCSSProperty_UNKNOWN,
"property ID out of range");
nsCSSUnit unit = GetUnit();
if (unit == eCSSUnit_Null) {
return;
}
if (eCSSUnit_String <= unit && unit <= eCSSUnit_Attr) {
if (unit == eCSSUnit_Attr) {
aResult.AppendLiteral("attr(");
}
nsAutoString buffer;
GetStringValue(buffer);
if (unit == eCSSUnit_String) {
nsStyleUtil::AppendEscapedCSSString(buffer, aResult);
} else if (unit == eCSSUnit_Families) {
// XXX We really need to do *some* escaping.
aResult.Append(buffer);
} else {
nsStyleUtil::AppendEscapedCSSIdent(buffer, aResult);
}
}
else if (eCSSUnit_Array <= unit && unit <= eCSSUnit_Steps) {
switch (unit) {
case eCSSUnit_Counter: aResult.AppendLiteral("counter("); break;
case eCSSUnit_Counters: aResult.AppendLiteral("counters("); break;
case eCSSUnit_Cubic_Bezier: aResult.AppendLiteral("cubic-bezier("); break;
case eCSSUnit_Steps: aResult.AppendLiteral("steps("); break;
default: break;
}
nsCSSValue::Array *array = GetArrayValue();
bool mark = false;
for (size_t i = 0, i_end = array->Count(); i < i_end; ++i) {
if (mark && array->Item(i).GetUnit() != eCSSUnit_Null) {
if (unit == eCSSUnit_Array &&
eCSSProperty_transition_timing_function != aProperty)
aResult.AppendLiteral(" ");
else
aResult.AppendLiteral(", ");
}
if (unit == eCSSUnit_Steps && i == 1) {
NS_ABORT_IF_FALSE(array->Item(i).GetUnit() == eCSSUnit_Enumerated &&
(array->Item(i).GetIntValue() ==
NS_STYLE_TRANSITION_TIMING_FUNCTION_STEP_START ||
array->Item(i).GetIntValue() ==
NS_STYLE_TRANSITION_TIMING_FUNCTION_STEP_END),
"unexpected value");
if (array->Item(i).GetIntValue() ==
NS_STYLE_TRANSITION_TIMING_FUNCTION_STEP_START) {
aResult.AppendLiteral("start");
} else {
aResult.AppendLiteral("end");
}
continue;
}
nsCSSProperty prop =
((eCSSUnit_Counter <= unit && unit <= eCSSUnit_Counters) &&
i == array->Count() - 1)
? eCSSProperty_list_style_type : aProperty;
if (array->Item(i).GetUnit() != eCSSUnit_Null) {
array->Item(i).AppendToString(prop, aResult);
mark = true;
}
}
if (eCSSUnit_Array == unit &&
aProperty == eCSSProperty_transition_timing_function) {
aResult.AppendLiteral(")");
}
}
/* Although Function is backed by an Array, we'll handle it separately
* because it's a bit quirky.
*/
else if (eCSSUnit_Function == unit) {
const nsCSSValue::Array* array = GetArrayValue();
NS_ABORT_IF_FALSE(array->Count() >= 1,
"Functions must have at least one element for the name.");
/* Append the function name. */
const nsCSSValue& functionName = array->Item(0);
if (functionName.GetUnit() == eCSSUnit_Enumerated) {
// We assume that the first argument is always of nsCSSKeyword type.
const nsCSSKeyword functionId =
static_cast<nsCSSKeyword>(functionName.GetIntValue());
nsStyleUtil::AppendEscapedCSSIdent(
NS_ConvertASCIItoUTF16(nsCSSKeywords::GetStringValue(functionId)),
aResult);
} else {
functionName.AppendToString(aProperty, aResult);
}
aResult.AppendLiteral("(");
/* Now, step through the function contents, writing each of them as we go. */
for (size_t index = 1; index < array->Count(); ++index) {
array->Item(index).AppendToString(aProperty, aResult);
/* If we're not at the final element, append a comma. */
if (index + 1 != array->Count())
aResult.AppendLiteral(", ");
}
/* Finally, append the closing parenthesis. */
aResult.AppendLiteral(")");
}
else if (IsCalcUnit()) {
NS_ABORT_IF_FALSE(GetUnit() == eCSSUnit_Calc, "unexpected unit");
CSSValueSerializeCalcOps ops(aProperty, aResult);
css::SerializeCalc(*this, ops);
}
else if (eCSSUnit_Integer == unit) {
aResult.AppendInt(GetIntValue(), 10);
}
else if (eCSSUnit_Enumerated == unit) {
if (eCSSProperty_text_decoration_line == aProperty) {
PRInt32 intValue = GetIntValue();
if (NS_STYLE_TEXT_DECORATION_LINE_NONE == intValue) {
AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, intValue),
aResult);
} else {
// Ignore the "override all" internal value.
// (It doesn't have a string representation.)
intValue &= ~NS_STYLE_TEXT_DECORATION_LINE_OVERRIDE_ALL;
nsStyleUtil::AppendBitmaskCSSValue(
aProperty, intValue,
NS_STYLE_TEXT_DECORATION_LINE_UNDERLINE,
NS_STYLE_TEXT_DECORATION_LINE_PREF_ANCHORS,
aResult);
}
}
else if (eCSSProperty_marks == aProperty) {
PRInt32 intValue = GetIntValue();
if (intValue == NS_STYLE_PAGE_MARKS_NONE) {
AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, intValue),
aResult);
} else {
nsStyleUtil::AppendBitmaskCSSValue(aProperty, intValue,
NS_STYLE_PAGE_MARKS_CROP,
NS_STYLE_PAGE_MARKS_REGISTER,
aResult);
}
}
else if (eCSSProperty_unicode_bidi == aProperty) {
PR_STATIC_ASSERT(NS_STYLE_UNICODE_BIDI_NORMAL == 0);
PRInt32 intValue = GetIntValue();
if (NS_STYLE_UNICODE_BIDI_NORMAL == intValue) {
AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, intValue),
aResult);
} else {
nsStyleUtil::AppendBitmaskCSSValue(
aProperty, intValue,
NS_STYLE_UNICODE_BIDI_EMBED,
NS_STYLE_UNICODE_BIDI_PLAINTEXT,
aResult);
}
}
else {
const nsAFlatCString& name = nsCSSProps::LookupPropertyValue(aProperty, GetIntValue());
AppendASCIItoUTF16(name, aResult);
}
}
else if (eCSSUnit_EnumColor == unit) {
// we can lookup the property in the ColorTable and then
// get a string mapping the name
nsCAutoString str;
if (nsCSSProps::GetColorName(GetIntValue(), str)){
AppendASCIItoUTF16(str, aResult);
} else {
NS_ABORT_IF_FALSE(false, "bad color value");
}
}
else if (eCSSUnit_Color == unit) {
nscolor color = GetColorValue();
if (color == NS_RGBA(0, 0, 0, 0)) {
// Use the strictest match for 'transparent' so we do correct
// round-tripping of all other rgba() values.
aResult.AppendLiteral("transparent");
} else {
PRUint8 a = NS_GET_A(color);
if (a < 255) {
aResult.AppendLiteral("rgba(");
} else {
aResult.AppendLiteral("rgb(");
}
NS_NAMED_LITERAL_STRING(comma, ", ");
aResult.AppendInt(NS_GET_R(color), 10);
aResult.Append(comma);
aResult.AppendInt(NS_GET_G(color), 10);
aResult.Append(comma);
aResult.AppendInt(NS_GET_B(color), 10);
if (a < 255) {
aResult.Append(comma);
aResult.AppendFloat(nsStyleUtil::ColorComponentToFloat(a));
}
aResult.Append(PRUnichar(')'));
}
}
else if (eCSSUnit_URL == unit || eCSSUnit_Image == unit) {
aResult.Append(NS_LITERAL_STRING("url("));
nsStyleUtil::AppendEscapedCSSString(
nsDependentString(GetOriginalURLValue()), aResult);
aResult.Append(NS_LITERAL_STRING(")"));
}
else if (eCSSUnit_Element == unit) {
aResult.Append(NS_LITERAL_STRING("-moz-element(#"));
nsAutoString tmpStr;
GetStringValue(tmpStr);
nsStyleUtil::AppendEscapedCSSIdent(tmpStr, aResult);
aResult.Append(NS_LITERAL_STRING(")"));
}
else if (eCSSUnit_Percent == unit) {
aResult.AppendFloat(GetPercentValue() * 100.0f);
}
else if (eCSSUnit_Percent < unit) { // length unit
aResult.AppendFloat(GetFloatValue());
}
else if (eCSSUnit_Gradient == unit) {
nsCSSValueGradient* gradient = GetGradientValue();
if (gradient->mIsRepeating) {
if (gradient->mIsRadial)
aResult.AppendLiteral("-moz-repeating-radial-gradient(");
else
aResult.AppendLiteral("-moz-repeating-linear-gradient(");
} else {
if (gradient->mIsRadial)
aResult.AppendLiteral("-moz-radial-gradient(");
else
aResult.AppendLiteral("-moz-linear-gradient(");
}
if (gradient->mIsToCorner) {
aResult.AppendLiteral("to");
NS_ABORT_IF_FALSE(gradient->mBgPos.mXValue.GetUnit() == eCSSUnit_Enumerated &&
gradient->mBgPos.mYValue.GetUnit() == eCSSUnit_Enumerated,
"unexpected unit");
if (!(gradient->mBgPos.mXValue.GetIntValue() & NS_STYLE_BG_POSITION_CENTER)) {
aResult.AppendLiteral(" ");
gradient->mBgPos.mXValue.AppendToString(eCSSProperty_background_position,
aResult);
}
if (!(gradient->mBgPos.mYValue.GetIntValue() & NS_STYLE_BG_POSITION_CENTER)) {
aResult.AppendLiteral(" ");
gradient->mBgPos.mYValue.AppendToString(eCSSProperty_background_position,
aResult);
}
aResult.AppendLiteral(", ");
} else if (gradient->mBgPos.mXValue.GetUnit() != eCSSUnit_None ||
gradient->mBgPos.mYValue.GetUnit() != eCSSUnit_None ||
gradient->mAngle.GetUnit() != eCSSUnit_None) {
if (gradient->mBgPos.mXValue.GetUnit() != eCSSUnit_None) {
gradient->mBgPos.mXValue.AppendToString(eCSSProperty_background_position,
aResult);
aResult.AppendLiteral(" ");
}
if (gradient->mBgPos.mXValue.GetUnit() != eCSSUnit_None) {
gradient->mBgPos.mYValue.AppendToString(eCSSProperty_background_position,
aResult);
aResult.AppendLiteral(" ");
}
if (gradient->mAngle.GetUnit() != eCSSUnit_None) {
gradient->mAngle.AppendToString(aProperty, aResult);
}
aResult.AppendLiteral(", ");
}
if (gradient->mIsRadial &&
(gradient->mRadialShape.GetUnit() != eCSSUnit_None ||
gradient->mRadialSize.GetUnit() != eCSSUnit_None)) {
if (gradient->mRadialShape.GetUnit() != eCSSUnit_None) {
NS_ABORT_IF_FALSE(gradient->mRadialShape.GetUnit() ==
eCSSUnit_Enumerated,
"bad unit for radial gradient shape");
PRInt32 intValue = gradient->mRadialShape.GetIntValue();
NS_ABORT_IF_FALSE(intValue != NS_STYLE_GRADIENT_SHAPE_LINEAR,
"radial gradient with linear shape?!");
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(intValue,
nsCSSProps::kRadialGradientShapeKTable),
aResult);
aResult.AppendLiteral(" ");
}
if (gradient->mRadialSize.GetUnit() != eCSSUnit_None) {
NS_ABORT_IF_FALSE(gradient->mRadialSize.GetUnit() ==
eCSSUnit_Enumerated,
"bad unit for radial gradient size");
PRInt32 intValue = gradient->mRadialSize.GetIntValue();
AppendASCIItoUTF16(nsCSSProps::ValueToKeyword(intValue,
nsCSSProps::kRadialGradientSizeKTable),
aResult);
}
aResult.AppendLiteral(", ");
}
for (PRUint32 i = 0 ;;) {
gradient->mStops[i].mColor.AppendToString(aProperty, aResult);
if (gradient->mStops[i].mLocation.GetUnit() != eCSSUnit_None) {
aResult.AppendLiteral(" ");
gradient->mStops[i].mLocation.AppendToString(aProperty, aResult);
}
if (++i == gradient->mStops.Length()) {
break;
}
aResult.AppendLiteral(", ");
}
aResult.AppendLiteral(")");
} else if (eCSSUnit_Pair == unit) {
GetPairValue().AppendToString(aProperty, aResult);
} else if (eCSSUnit_Triplet == unit) {
GetTripletValue().AppendToString(aProperty, aResult);
} else if (eCSSUnit_Rect == unit) {
GetRectValue().AppendToString(aProperty, aResult);
} else if (eCSSUnit_List == unit || eCSSUnit_ListDep == unit) {
GetListValue()->AppendToString(aProperty, aResult);
} else if (eCSSUnit_PairList == unit || eCSSUnit_PairListDep == unit) {
GetPairListValue()->AppendToString(aProperty, aResult);
}
switch (unit) {
case eCSSUnit_Null: break;
case eCSSUnit_Auto: aResult.AppendLiteral("auto"); break;
case eCSSUnit_Inherit: aResult.AppendLiteral("inherit"); break;
case eCSSUnit_Initial: aResult.AppendLiteral("-moz-initial"); break;
case eCSSUnit_None: aResult.AppendLiteral("none"); break;
case eCSSUnit_Normal: aResult.AppendLiteral("normal"); break;
case eCSSUnit_System_Font: aResult.AppendLiteral("-moz-use-system-font"); break;
case eCSSUnit_All: aResult.AppendLiteral("all"); break;
case eCSSUnit_Dummy:
case eCSSUnit_DummyInherit:
NS_ABORT_IF_FALSE(false, "should never serialize");
break;
case eCSSUnit_String: break;
case eCSSUnit_Ident: break;
case eCSSUnit_Families: break;
case eCSSUnit_URL: break;
case eCSSUnit_Image: break;
case eCSSUnit_Element: break;
case eCSSUnit_Array: break;
case eCSSUnit_Attr:
case eCSSUnit_Cubic_Bezier:
case eCSSUnit_Steps:
case eCSSUnit_Counter:
case eCSSUnit_Counters: aResult.Append(PRUnichar(')')); break;
case eCSSUnit_Local_Font: break;
case eCSSUnit_Font_Format: break;
case eCSSUnit_Function: break;
case eCSSUnit_Calc: break;
case eCSSUnit_Calc_Plus: break;
case eCSSUnit_Calc_Minus: break;
case eCSSUnit_Calc_Times_L: break;
case eCSSUnit_Calc_Times_R: break;
case eCSSUnit_Calc_Divided: break;
case eCSSUnit_Integer: break;
case eCSSUnit_Enumerated: break;
case eCSSUnit_EnumColor: break;
case eCSSUnit_Color: break;
case eCSSUnit_Percent: aResult.Append(PRUnichar('%')); break;
case eCSSUnit_Number: break;
case eCSSUnit_Gradient: break;
case eCSSUnit_Pair: break;
case eCSSUnit_Triplet: break;
case eCSSUnit_Rect: break;
case eCSSUnit_List: break;
case eCSSUnit_ListDep: break;
case eCSSUnit_PairList: break;
case eCSSUnit_PairListDep: break;
case eCSSUnit_Inch: aResult.AppendLiteral("in"); break;
case eCSSUnit_Millimeter: aResult.AppendLiteral("mm"); break;
case eCSSUnit_PhysicalMillimeter: aResult.AppendLiteral("mozmm"); break;
case eCSSUnit_Centimeter: aResult.AppendLiteral("cm"); break;
case eCSSUnit_Point: aResult.AppendLiteral("pt"); break;
case eCSSUnit_Pica: aResult.AppendLiteral("pc"); break;
case eCSSUnit_EM: aResult.AppendLiteral("em"); break;
case eCSSUnit_XHeight: aResult.AppendLiteral("ex"); break;
case eCSSUnit_Char: aResult.AppendLiteral("ch"); break;
case eCSSUnit_RootEM: aResult.AppendLiteral("rem"); break;
case eCSSUnit_Pixel: aResult.AppendLiteral("px"); break;
case eCSSUnit_Degree: aResult.AppendLiteral("deg"); break;
case eCSSUnit_Grad: aResult.AppendLiteral("grad"); break;
case eCSSUnit_Radian: aResult.AppendLiteral("rad"); break;
case eCSSUnit_Hertz: aResult.AppendLiteral("Hz"); break;
case eCSSUnit_Kilohertz: aResult.AppendLiteral("kHz"); break;
case eCSSUnit_Seconds: aResult.Append(PRUnichar('s')); break;
case eCSSUnit_Milliseconds: aResult.AppendLiteral("ms"); break;
}
}
void NS_GetSpecial3DColors(nscolor aResult[2],
nscolor aBackgroundColor,
nscolor aBorderColor)
{
uint8_t f0, f1;
uint8_t r, g, b;
uint8_t rb = NS_GET_R(aBorderColor);
uint8_t gb = NS_GET_G(aBorderColor);
uint8_t bb = NS_GET_B(aBorderColor);
uint8_t a = NS_GET_A(aBorderColor);
// This needs to be optimized.
// Calculating background brightness again and again is
// a waste of time!!!. Just calculate it only once.
// .....somehow!!!
uint8_t red = NS_GET_R(aBackgroundColor);
uint8_t green = NS_GET_G(aBackgroundColor);
uint8_t blue = NS_GET_B(aBackgroundColor);
uint8_t elementBrightness = NS_GetBrightness(rb,gb,bb);
uint8_t backgroundBrightness = NS_GetBrightness(red, green, blue);
if (backgroundBrightness < COLOR_DARK_THRESHOLD) {
f0 = COLOR_DARK_BS_FACTOR;
f1 = COLOR_DARK_TS_FACTOR;
if(elementBrightness == MAX_DARKNESS)
{
rb = NS_GET_R(DARK_GRAY);
gb = NS_GET_G(DARK_GRAY);
bb = NS_GET_B(DARK_GRAY);
}
}else if (backgroundBrightness > COLOR_LIGHT_THRESHOLD) {
f0 = COLOR_LITE_BS_FACTOR;
f1 = COLOR_LITE_TS_FACTOR;
if(elementBrightness == MAX_BRIGHTNESS)
{
rb = NS_GET_R(LIGHT_GRAY);
gb = NS_GET_G(LIGHT_GRAY);
bb = NS_GET_B(LIGHT_GRAY);
}
}else {
f0 = COLOR_DARK_BS_FACTOR +
(backgroundBrightness *
(COLOR_LITE_BS_FACTOR - COLOR_DARK_BS_FACTOR) / MAX_COLOR);
f1 = COLOR_DARK_TS_FACTOR +
(backgroundBrightness *
(COLOR_LITE_TS_FACTOR - COLOR_DARK_TS_FACTOR) / MAX_COLOR);
}
r = rb - (f0 * rb / 100);
g = gb - (f0 * gb / 100);
b = bb - (f0 * bb / 100);
aResult[0] = NS_RGBA(r, g, b, a);
r = rb + (f1 * (MAX_COLOR - rb) / 100);
g = gb + (f1 * (MAX_COLOR - gb) / 100);
b = bb + (f1 * (MAX_COLOR - bb) / 100);
aResult[1] = NS_RGBA(r, g, b, a);
}
PRBool
nsSVGGradientFrame::SetupPaintServer(gfxContext *aContext,
nsSVGGeometryFrame *aSource,
float aGraphicOpacity)
{
// Get the transform list (if there is one)
gfxMatrix patternMatrix = GetGradientTransform(aSource);
if (patternMatrix.IsSingular())
return PR_FALSE;
PRUint32 nStops = GetStopCount();
// SVG specification says that no stops should be treated like
// the corresponding fill or stroke had "none" specified.
if (nStops == 0) {
aContext->SetColor(gfxRGBA(0, 0, 0, 0));
return PR_TRUE;
}
patternMatrix.Invert();
nsRefPtr<gfxPattern> gradient = CreateGradient();
if (!gradient || gradient->CairoStatus())
return PR_FALSE;
PRUint16 aSpread = GetSpreadMethod();
if (aSpread == nsIDOMSVGGradientElement::SVG_SPREADMETHOD_PAD)
gradient->SetExtend(gfxPattern::EXTEND_PAD);
else if (aSpread == nsIDOMSVGGradientElement::SVG_SPREADMETHOD_REFLECT)
gradient->SetExtend(gfxPattern::EXTEND_REFLECT);
else if (aSpread == nsIDOMSVGGradientElement::SVG_SPREADMETHOD_REPEAT)
gradient->SetExtend(gfxPattern::EXTEND_REPEAT);
gradient->SetMatrix(patternMatrix);
// setup stops
float lastOffset = 0.0f;
for (PRUint32 i = 0; i < nStops; i++) {
float offset, stopOpacity;
nscolor stopColor;
GetStopInformation(i, &offset, &stopColor, &stopOpacity);
if (offset < lastOffset)
offset = lastOffset;
else
lastOffset = offset;
gradient->AddColorStop(offset,
gfxRGBA(NS_GET_R(stopColor)/255.0,
NS_GET_G(stopColor)/255.0,
NS_GET_B(stopColor)/255.0,
NS_GET_A(stopColor)/255.0 *
stopOpacity * aGraphicOpacity));
}
aContext->SetPattern(gradient);
return PR_TRUE;
}
extern "C" NS_GFX_(nscolor) NS_BrightenColor(nscolor inColor)
{
PRIntn r, g, b, max, over;
r = NS_GET_R(inColor);
g = NS_GET_G(inColor);
b = NS_GET_B(inColor);
//10% of max color increase across the board
r += 25;
g += 25;
b += 25;
//figure out which color is largest
if (r > g)
{
if (b > r)
max = b;
else
max = r;
}
else
{
if (b > g)
max = b;
else
max = g;
}
//if we overflowed on this max color, increase
//other components by the overflow amount
if (max > 255)
{
over = max - 255;
if (max == r)
{
g += over;
b += over;
}
else if (max == g)
{
r += over;
b += over;
}
else
{
r += over;
g += over;
}
}
//clamp
if (r > 255)
r = 255;
if (g > 255)
g = 255;
if (b > 255)
b = 255;
return NS_RGBA(r, g, b, NS_GET_A(inColor));
}
