nsFontMetrics::nsFontMetrics(const nsFont& aFont, const Params& aParams,
nsDeviceContext *aContext)
: mFont(aFont)
, mLanguage(aParams.language)
, mDeviceContext(aContext)
, mP2A(aContext->AppUnitsPerDevPixel())
, mOrientation(aParams.orientation)
, mTextRunRTL(false)
, mVertical(false)
, mTextOrientation(0)
{
gfxFontStyle style(aFont.style,
aFont.weight,
aFont.stretch,
gfxFloat(aFont.size) / mP2A,
aParams.language,
aParams.explicitLanguage,
aFont.sizeAdjust,
aFont.systemFont,
mDeviceContext->IsPrinterSurface(),
aFont.synthesis & NS_FONT_SYNTHESIS_WEIGHT,
aFont.synthesis & NS_FONT_SYNTHESIS_STYLE,
aFont.languageOverride);
aFont.AddFontFeaturesToStyle(&style);
gfxFloat devToCssSize = gfxFloat(mP2A) /
gfxFloat(mDeviceContext->AppUnitsPerCSSPixel());
mFontGroup = gfxPlatform::GetPlatform()->
CreateFontGroup(aFont.fontlist, &style, aParams.textPerf,
aParams.userFontSet, devToCssSize);
}
nsresult
nsFontMetrics::Init(const nsFont& aFont, nsIAtom* aLanguage,
nsDeviceContext *aContext,
gfxUserFontSet *aUserFontSet)
{
NS_ABORT_IF_FALSE(mP2A == -1, "already initialized");
mFont = aFont;
mLanguage = aLanguage;
mDeviceContext = aContext;
mP2A = mDeviceContext->AppUnitsPerDevPixel();
gfxFontStyle style(aFont.style,
aFont.weight,
aFont.stretch,
gfxFloat(aFont.size) / mP2A,
aLanguage,
aFont.sizeAdjust,
aFont.systemFont,
mDeviceContext->IsPrinterSurface(),
aFont.featureSettings,
aFont.languageOverride);
mFontGroup = gfxPlatform::GetPlatform()->
CreateFontGroup(aFont.name, &style, aUserFontSet);
if (mFontGroup->FontListLength() < 1)
return NS_ERROR_UNEXPECTED;
return NS_OK;
}
nsresult
nsFontMetrics::Init(const nsFont& aFont,
nsIAtom* aLanguage, bool aExplicitLanguage,
gfxFont::Orientation aOrientation,
nsDeviceContext *aContext,
gfxUserFontSet *aUserFontSet,
gfxTextPerfMetrics *aTextPerf)
{
MOZ_ASSERT(mP2A == 0, "already initialized");
mFont = aFont;
mLanguage = aLanguage;
mOrientation = aOrientation;
mDeviceContext = aContext;
mP2A = mDeviceContext->AppUnitsPerDevPixel();
gfxFontStyle style(aFont.style,
aFont.weight,
aFont.stretch,
gfxFloat(aFont.size) / mP2A,
aLanguage,
aExplicitLanguage,
aFont.sizeAdjust,
aFont.systemFont,
mDeviceContext->IsPrinterSurface(),
aFont.synthesis & NS_FONT_SYNTHESIS_WEIGHT,
aFont.synthesis & NS_FONT_SYNTHESIS_STYLE,
aFont.languageOverride);
aFont.AddFontFeaturesToStyle(&style);
mFontGroup = gfxPlatform::GetPlatform()->
CreateFontGroup(aFont.fontlist, &style, aTextPerf, aUserFontSet);
return NS_OK;
}
nsresult
nsFontMetrics::Init(const nsFont& aFont, nsIAtom* aLanguage,
nsDeviceContext *aContext,
gfxUserFontSet *aUserFontSet,
gfxTextPerfMetrics *aTextPerf)
{
NS_ABORT_IF_FALSE(mP2A == 0, "already initialized");
mFont = aFont;
mLanguage = aLanguage;
mDeviceContext = aContext;
mP2A = mDeviceContext->AppUnitsPerDevPixel();
gfxFontStyle style(aFont.style,
aFont.weight,
aFont.stretch,
gfxFloat(aFont.size) / mP2A,
aLanguage,
aFont.sizeAdjust,
aFont.systemFont,
mDeviceContext->IsPrinterSurface(),
aFont.synthesis & NS_FONT_SYNTHESIS_WEIGHT,
aFont.synthesis & NS_FONT_SYNTHESIS_STYLE,
aFont.languageOverride);
aFont.AddFontFeaturesToStyle(&style);
mFontGroup = gfxPlatform::GetPlatform()->
CreateFontGroup(aFont.fontlist, &style, aUserFontSet);
mFontGroup->SetTextPerfMetrics(aTextPerf);
if (mFontGroup->FontListLength() < 1)
return NS_ERROR_UNEXPECTED;
return NS_OK;
}
NS_IMETHODIMP
nsThebesFontMetrics::Init(const nsFont& aFont, nsIAtom* aLangGroup,
nsIDeviceContext *aContext,
gfxUserFontSet *aUserFontSet)
{
mFont = aFont;
mLangGroup = aLangGroup;
mDeviceContext = (nsThebesDeviceContext*)aContext;
mP2A = mDeviceContext->AppUnitsPerDevPixel();
mIsRightToLeft = PR_FALSE;
mTextRunRTL = PR_FALSE;
gfxFloat size = gfxFloat(aFont.size) / mP2A;
nsCString langGroup;
if (aLangGroup) {
const char* lg;
mLangGroup->GetUTF8String(&lg);
langGroup.Assign(lg);
}
PRBool printerFont = mDeviceContext->IsPrinterSurface();
mFontStyle = new gfxFontStyle(aFont.style, aFont.weight, aFont.stretch,
size, langGroup,
aFont.sizeAdjust, aFont.systemFont,
aFont.familyNameQuirks,
printerFont);
mFontGroup =
gfxPlatform::GetPlatform()->CreateFontGroup(aFont.name, mFontStyle,
aUserFontSet);
if (mFontGroup->FontListLength() < 1)
return NS_ERROR_UNEXPECTED;
return NS_OK;
}
void
gfxFontMissingGlyphs::DrawMissingGlyph(gfxContext *aContext,
const gfxRect& aRect,
uint32_t aChar,
uint32_t aAppUnitsPerDevPixel)
{
aContext->Save();
gfxRGBA currentColor;
if (!aContext->GetDeviceColor(currentColor)) {
// We're currently drawing with some kind of pattern... Just draw
// the missing-glyph data in black.
currentColor = gfxRGBA(0,0,0,1);
}
// Stroke a rectangle so that the stroke's left edge is inset one pixel
// from the left edge of the glyph box and the stroke's right edge
// is inset one pixel from the right edge of the glyph box.
gfxFloat halfBorderWidth = BOX_BORDER_WIDTH / 2.0;
gfxFloat borderLeft = aRect.X() + BOX_HORIZONTAL_INSET + halfBorderWidth;
gfxFloat borderRight = aRect.XMost() - BOX_HORIZONTAL_INSET - halfBorderWidth;
gfxRect borderStrokeRect(borderLeft, aRect.Y() + halfBorderWidth,
borderRight - borderLeft,
aRect.Height() - 2.0 * halfBorderWidth);
if (!borderStrokeRect.IsEmpty()) {
aContext->SetLineWidth(BOX_BORDER_WIDTH);
aContext->SetDash(gfxContext::gfxLineSolid);
aContext->SetLineCap(gfxContext::LINE_CAP_SQUARE);
aContext->SetLineJoin(gfxContext::LINE_JOIN_MITER);
gfxRGBA color = currentColor;
color.a *= BOX_BORDER_OPACITY;
aContext->SetDeviceColor(color);
aContext->NewPath();
aContext->Rectangle(borderStrokeRect);
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
aContext->Fill();
#else
aContext->Stroke();
#endif
}
#ifndef MOZ_GFX_OPTIMIZE_MOBILE
gfxPoint center(aRect.X() + aRect.Width() / 2,
aRect.Y() + aRect.Height() / 2);
gfxFloat halfGap = HEX_CHAR_GAP / 2.0;
gfxFloat top = -(MINIFONT_HEIGHT + halfGap);
aContext->SetDeviceColor(currentColor);
aContext->Translate(center);
// We always want integer scaling, otherwise the "bitmap" glyphs will look
// even uglier than usual when zoomed
int32_t scale =
std::max<int32_t>(1, nsDeviceContext::AppUnitsPerCSSPixel() /
aAppUnitsPerDevPixel);
aContext->Scale(gfxFloat(scale), gfxFloat(scale));
if (aChar < 0x10000) {
if (aRect.Width() >= 2 * (MINIFONT_WIDTH + HEX_CHAR_GAP) &&
aRect.Height() >= 2 * MINIFONT_HEIGHT + HEX_CHAR_GAP) {
// Draw 4 digits for BMP
gfxFloat left = -(MINIFONT_WIDTH + halfGap);
DrawHexChar(aContext,
gfxPoint(left, top), (aChar >> 12) & 0xF);
DrawHexChar(aContext,
gfxPoint(halfGap, top), (aChar >> 8) & 0xF);
DrawHexChar(aContext,
gfxPoint(left, halfGap), (aChar >> 4) & 0xF);
DrawHexChar(aContext,
gfxPoint(halfGap, halfGap), aChar & 0xF);
}
} else {
nsresult
nsThebesImage::ThebesDrawTile(gfxContext *thebesContext,
nsIDeviceContext* dx,
const gfxPoint& offset,
const gfxRect& targetRect,
const nsIntRect& aSubimageRect,
const PRInt32 xPadding,
const PRInt32 yPadding)
{
NS_ASSERTION(xPadding >= 0 && yPadding >= 0, "negative padding");
if (targetRect.size.width <= 0.0 || targetRect.size.height <= 0.0)
return NS_OK;
// don't do anything if we have a transparent pixel source
if (mSinglePixel && mSinglePixelColor.a == 0.0)
return NS_OK;
PRBool doSnap = !(thebesContext->CurrentMatrix().HasNonTranslation());
PRBool hasPadding = ((xPadding != 0) || (yPadding != 0));
gfxImageSurface::gfxImageFormat format = mFormat;
gfxPoint tmpOffset = offset;
if (mSinglePixel && !hasPadding) {
thebesContext->SetDeviceColor(mSinglePixelColor);
} else {
nsRefPtr<gfxASurface> surface;
PRInt32 width, height;
if (hasPadding) {
/* Ugh we have padding; create a temporary surface that's the size of the surface + pad area,
* and render the image into it first. Then we'll tile that surface. */
width = mWidth + xPadding;
height = mHeight + yPadding;
// Reject over-wide or over-tall images.
if (!AllowedImageSize(width, height))
return NS_ERROR_FAILURE;
format = gfxASurface::ImageFormatARGB32;
surface = gfxPlatform::GetPlatform()->CreateOffscreenSurface(
gfxIntSize(width, height), format);
if (!surface || surface->CairoStatus()) {
return NS_ERROR_OUT_OF_MEMORY;
}
gfxContext tmpContext(surface);
if (mSinglePixel) {
tmpContext.SetDeviceColor(mSinglePixelColor);
} else {
tmpContext.SetSource(ThebesSurface());
}
tmpContext.SetOperator(gfxContext::OPERATOR_SOURCE);
tmpContext.Rectangle(gfxRect(0, 0, mWidth, mHeight));
tmpContext.Fill();
} else {
width = mWidth;
height = mHeight;
surface = ThebesSurface();
}
// Scale factor to account for CSS pixels; note that the offset (and
// therefore p0) is in device pixels, while the width and height are in
// CSS pixels.
gfxFloat scale = gfxFloat(dx->AppUnitsPerDevPixel()) /
gfxFloat(nsIDeviceContext::AppUnitsPerCSSPixel());
if ((aSubimageRect.width < width || aSubimageRect.height < height) &&
(thebesContext->CurrentMatrix().HasNonTranslation() || scale != 1.0)) {
// Some of the source image should not be drawn, and we're going
// to be doing more than just translation, so we might accidentally
// sample the non-drawn pixels. Avoid that by creating a
// temporary image representing the portion that will be drawn,
// with built-in padding since we can't use EXTEND_PAD and
// EXTEND_REPEAT at the same time for different axes.
PRInt32 padX = aSubimageRect.width < width ? 1 : 0;
PRInt32 padY = aSubimageRect.height < height ? 1 : 0;
PRInt32 tileWidth = PR_MIN(aSubimageRect.width, width);
PRInt32 tileHeight = PR_MIN(aSubimageRect.height, height);
// This tmpSurface will contain a snapshot of the repeated
// tile image at (aSubimageRect.x, aSubimageRect.y,
// tileWidth, tileHeight), with padX padding added to the left
// and right sides and padY padding added to the top and bottom
// sides.
nsRefPtr<gfxASurface> tmpSurface;
tmpSurface = gfxPlatform::GetPlatform()->CreateOffscreenSurface(
gfxIntSize(tileWidth + 2*padX, tileHeight + 2*padY), format);
if (!tmpSurface || tmpSurface->CairoStatus()) {
return NS_ERROR_OUT_OF_MEMORY;
}
gfxContext tmpContext(tmpSurface);
tmpContext.SetOperator(gfxContext::OPERATOR_SOURCE);
gfxPattern pat(surface);
pat.SetExtend(gfxPattern::EXTEND_REPEAT);
// Copy the needed portion of the source image to the temporary
// surface. We also copy over horizontal and/or vertical padding
// strips one pixel wide, plus the corner pixels if necessary.
// So in the most general case the temporary surface ends up
// looking like
// P P P ... P P P
// P X X ... X X P
// P X X ... X X P
// ...............
// P X X ... X X P
// P X X ... X X P
// P P P ... P P P
// Where each P pixel has the color of its nearest source X
// pixel. We implement this as a loop over all nine possible
// areas, [padding, body, padding] x [padding, body, padding].
// Note that we will not need padding on both axes unless
// we are painting just a single tile, in which case this
// will hardly ever get called since nsCSSRendering converts
// the single-tile case to nsLayoutUtils::DrawImage. But this
// could be called on other paths (XUL trees?) and it's simpler
// and clearer to do it the general way.
PRInt32 destY = 0;
for (PRInt32 y = -1; y <= 1; ++y) {
PRInt32 stripHeight = y == 0 ? tileHeight : padY;
if (stripHeight == 0)
continue;
PRInt32 srcY = y == 1 ? aSubimageRect.YMost() - padY : aSubimageRect.y;
PRInt32 destX = 0;
for (PRInt32 x = -1; x <= 1; ++x) {
PRInt32 stripWidth = x == 0 ? tileWidth : padX;
if (stripWidth == 0)
continue;
PRInt32 srcX = x == 1 ? aSubimageRect.XMost() - padX : aSubimageRect.x;
gfxMatrix patMat;
patMat.Translate(gfxPoint(srcX - destX, srcY - destY));
pat.SetMatrix(patMat);
tmpContext.SetPattern(&pat);
tmpContext.Rectangle(gfxRect(destX, destY, stripWidth, stripHeight));
tmpContext.Fill();
tmpContext.NewPath();
destX += stripWidth;
}
destY += stripHeight;
}
// tmpOffset was the top-left of the old tile image. Make it
// the top-left of the new tile image. Note that tmpOffset is
// in destination coordinate space so we have to scale our
// CSS pixels.
tmpOffset += gfxPoint(aSubimageRect.x - padX, aSubimageRect.y - padY)/scale;
surface = tmpSurface;
}
gfxMatrix patMat;
gfxPoint p0;
p0.x = - floor(tmpOffset.x + 0.5);
p0.y = - floor(tmpOffset.y + 0.5);
patMat.Scale(scale, scale);
patMat.Translate(p0);
gfxPattern pat(surface);
pat.SetExtend(gfxPattern::EXTEND_REPEAT);
pat.SetMatrix(patMat);
#ifndef XP_MACOSX
if (scale < 1.0) {
// See bug 324698. This is a workaround. See comments
// by the earlier SetFilter call.
pat.SetFilter(0);
}
#endif
thebesContext->SetPattern(&pat);
}
gfxContext::GraphicsOperator op = thebesContext->CurrentOperator();
if (op == gfxContext::OPERATOR_OVER && format == gfxASurface::ImageFormatRGB24)
thebesContext->SetOperator(gfxContext::OPERATOR_SOURCE);
thebesContext->NewPath();
thebesContext->Rectangle(targetRect, doSnap);
thebesContext->Fill();
thebesContext->SetOperator(op);
thebesContext->SetDeviceColor(gfxRGBA(0,0,0,0));
return NS_OK;
}