virtual void onDrawContent(SkCanvas* canvas) {
const char* str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
SkPaint paint;
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(20);
paint.setFlags(0x105);
paint.setARGB(fByte, 0xFF, 0xFF, 0xFF);
paint.setMaskFilter(SkBlurMaskFilter::Create(SkIntToScalar(3),
SkBlurMaskFilter::kNormal_BlurStyle));
paint.getMaskFilter()->unref();
SkRandom rand;
for (int ps = 6; ps <= 35; ps++) {
paint.setColor(rand.nextU() | (0xFF << 24));
paint.setTextSize(SkIntToScalar(ps));
paint.setTextSize(SkIntToScalar(24));
canvas->drawText(str, strlen(str), x, y, paint);
y += paint.getFontMetrics(NULL);
}
if (false) { // avoid bit rot, suppress warning
check_for_nonwhite(canvas->getDevice()->accessBitmap(false), fByte);
SkDebugf("------ byte %x\n", fByte);
}
if (false) {
fByte += 1;
fByte &= 0xFF;
this->inval(NULL);
}
}
SkRect FindCanvas::addMatchPos(int index,
const SkPaint& paint, int count, const uint16_t* glyphs,
const SkScalar xPos[], SkScalar /* y */) {
SkRect r;
r.setEmpty();
const SkPoint* temp = reinterpret_cast<const SkPoint*> (xPos);
const SkPoint* points = &temp[index];
int countInBytes = count * sizeof(uint16_t);
SkPaint::FontMetrics fontMetrics;
paint.getFontMetrics(&fontMetrics);
// Need to check each character individually, since the heights may be
// different.
for (int j = 0; j < count; j++) {
SkRect bounds;
bounds.fLeft = points[j].fX;
bounds.fRight = bounds.fLeft +
paint.measureText(&glyphs[j], sizeof(uint16_t), 0);
SkScalar baseline = points[j].fY;
bounds.fTop = baseline + fontMetrics.fAscent;
bounds.fBottom = baseline + fontMetrics.fDescent;
/* Accumulate and then add the resulting rect to mMatches */
r.join(bounds);
}
SkMatrix matrix = getTotalMatrix();
matrix.mapRect(&r);
SkCanvas* canvas = getWorkingCanvas();
int saveCount = canvas->save();
canvas->concat(matrix);
canvas->drawPosText(glyphs, countInBytes, points, paint);
canvas->restoreToCount(saveCount);
return r;
}
void init() {
fTypeface = chinese_typeface();
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(0xDE000000);
paint.setTypeface(fTypeface);
paint.setTextSize(11);
paint.setTextEncoding(SkPaint::kUTF32_TextEncoding);
paint.getFontMetrics(&fMetrics);
SkUnichar glyphs[45];
for (int32_t i = 0; i < kNumBlobs; ++i) {
SkTextBlobBuilder builder;
auto paragraphLength = kParagraphLength;
SkScalar y = 0;
while (paragraphLength - 45 > 0) {
auto currentLineLength = SkTMin(45, paragraphLength - 45);
this->createRandomLine(glyphs, currentLineLength);
sk_tool_utils::add_to_text_blob_w_len(&builder, (const char*) glyphs,
currentLineLength*4, paint, 0, y);
y += fMetrics.fDescent - fMetrics.fAscent + fMetrics.fLeading;
paragraphLength -= 45;
}
fBlobs.emplace_back(builder.make());
}
fIndex = 0;
}
FloatRect Font::selectionRectForComplexText(const TextRun& run,
const IntPoint& point, int h, int from, int to) const
{
SkPaint paint;
SkScalar width, left;
SkPaint::FontMetrics metrics;
primaryFont()->platformData().setupPaint(&paint);
SkScalar spacing = paint.getFontMetrics(&metrics);
float beforeWidth = SkScalarToFloat(paint.measureText(run.characters(), from << 1));
float afterWidth = SkScalarToFloat(paint.measureText(run.characters(), to << 1));
if (run.rtl()) {
float totalWidth = SkScalarToFloat(paint.measureText(run.characters(), run.length() << 1));
return FloatRect(point.x() + floorf(totalWidth - afterWidth),
point.y(),
roundf(totalWidth - beforeWidth) - floorf(totalWidth - afterWidth),
//roundf(SkScalarToFloat(spacing))); // Don't compute rect height, but use h.
h);
} else {
return FloatRect(point.x() + floorf(beforeWidth),
point.y(),
roundf(afterWidth) - floorf(beforeWidth),
//roundf(SkScalarToFloat(spacing))); // Don't compute rect height, but use h.
h);
}
}
SkRect FindCanvas::addMatchPosH(int index,
const SkPaint& paint, int count, const uint16_t* glyphs,
const SkScalar position[], SkScalar constY) {
SkRect r;
// We only care about the positions starting at the index of our match
const SkScalar* xPos = &position[index];
// This assumes that the position array is monotonic increasing
// The left bounds will be the position of the left most character
r.fLeft = xPos[0];
// The right bounds will be the position of the last character plus its
// width
int lastIndex = count - 1;
r.fRight = paint.measureText(&glyphs[lastIndex], sizeof(uint16_t), 0)
+ xPos[lastIndex];
// Grab font metrics to determine the top and bottom of the bounds
SkPaint::FontMetrics fontMetrics;
paint.getFontMetrics(&fontMetrics);
r.fTop = constY + fontMetrics.fAscent;
r.fBottom = constY + fontMetrics.fDescent;
const SkMatrix& matrix = getTotalMatrix();
matrix.mapRect(&r);
SkCanvas* canvas = getWorkingCanvas();
int saveCount = canvas->save();
canvas->concat(matrix);
canvas->drawPosTextH(glyphs, count * sizeof(uint16_t), xPos, constY, paint);
canvas->restoreToCount(saveCount);
return r;
}
static void call_draw(SkCanvas* canvas)
{
SkPaint paint;
uint16_t text[32];
SkRandom rand;
paint.setAntiAlias(true);
paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
for (int j = 0; j < SK_ARRAY_COUNT(text); j++)
text[j] = (uint16_t)((rand.nextU() & 0xFF) + 32);
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(20);
canvas->drawColor(SK_ColorWHITE);
for (int i = 9; i < 36; i++)
{
SkPaint::FontMetrics m;
paint.setTextSize(SkIntToScalar(i));
paint.getFontMetrics(&m);
canvas->drawText(text, sizeof(text), x, y, paint);
y += m.fDescent - m.fAscent;
}
}
// Each version of addMatch returns a rectangle for a match.
// Not all of the parameters are used by each version.
SkRect FindCanvas::addMatchNormal(int index,
const SkPaint& paint, int count, const uint16_t* glyphs,
const SkScalar pos[], SkScalar y) {
const uint16_t* lineStart = glyphs - index;
/* Use the original paint, since "text" is in glyphs */
SkScalar before = paint.measureText(lineStart, index * sizeof(uint16_t), 0);
SkRect rect;
rect.fLeft = pos[0] + before;
int countInBytes = count * sizeof(uint16_t);
rect.fRight = paint.measureText(glyphs, countInBytes, 0) + rect.fLeft;
SkPaint::FontMetrics fontMetrics;
paint.getFontMetrics(&fontMetrics);
SkScalar baseline = y;
rect.fTop = baseline + fontMetrics.fAscent;
rect.fBottom = baseline + fontMetrics.fDescent;
const SkMatrix& matrix = getTotalMatrix();
matrix.mapRect(&rect);
// Add the text to our picture.
SkCanvas* canvas = getWorkingCanvas();
int saveCount = canvas->save();
canvas->concat(matrix);
canvas->drawText(glyphs, countInBytes, pos[0] + before, y, paint);
canvas->restoreToCount(saveCount);
return rect;
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(SkIntToScalar(30));
const char* text = fApplyKerning ? "Type AWAY" : "Hamburgefons";
const size_t textLen = strlen(text);
SkScalar x = SkIntToScalar(10);
SkScalar dy = paint.getFontMetrics(nullptr);
SkScalar y = dy;
if (fApplyKerning) {
paint.setSubpixelText(true);
} else {
paint.setLinearText(true);
}
for (int i = 0; i < gFaceStylesCount; i++) {
paint.setTypeface(fFaces[i]);
canvas->drawText(text, textLen, x, y, paint);
if (fApplyKerning) {
drawKernText(canvas, text, textLen, x + 240, y, paint);
}
y += dy;
}
}
virtual void onDraw(SkCanvas* originalCanvas) {
SkISize size = this->getISize();
SkBitmap bitmap;
bitmap.allocN32Pixels(size.width(), size.height());
SkDeviceProperties properties = SkDeviceProperties::Make(
SkDeviceProperties::Geometry::Make(SkDeviceProperties::Geometry::kVertical_Orientation,
SkDeviceProperties::Geometry::kBGR_Layout),
SK_Scalar1);
SkBitmapDevice device(bitmap, properties);
SkCanvas canvas(&device);
canvas.drawColor(SK_ColorWHITE);
SkPaint paint;
paint.setAntiAlias(true);
paint.setLCDRenderText(true);
//With freetype the default (normal hinting) can be really ugly.
//Most distros now set slight (vertical hinting only) in any event.
paint.setHinting(SkPaint::kSlight_Hinting);
sk_tool_utils::set_portable_typeface(&paint, "Times Roman", SkTypeface::kNormal);
const char* text = "Hamburgefons ooo mmm";
const size_t textLen = strlen(text);
for (int j = 0; j < 2; ++j) {
for (int i = 0; i < 6; ++i) {
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(20);
SkAutoCanvasRestore acr(&canvas, true);
canvas.translate(SkIntToScalar(50 + i * 230),
SkIntToScalar(20));
rotate_about(&canvas, SkIntToScalar(i * 5), x, y * 10);
{
SkPaint p;
p.setAntiAlias(true);
SkRect r;
r.set(x - SkIntToScalar(3), SkIntToScalar(15),
x - SkIntToScalar(1), SkIntToScalar(280));
canvas.drawRect(r, p);
}
int index = 0;
for (int ps = 6; ps <= 22; ps++) {
paint.setTextSize(SkIntToScalar(ps));
canvas.drawText(text, textLen, x, y, paint);
y += paint.getFontMetrics(NULL);
index += 1;
}
}
canvas.translate(0, SkIntToScalar(360));
paint.setSubpixelText(true);
}
originalCanvas->drawBitmap(bitmap, 0, 0);
}
void onDrawContent(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(SkIntToScalar(24));
SkAutoTUnref<SkBlurDrawLooper> looper(
SkBlurDrawLooper::Create(SK_ColorBLUE,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(2)),
0, 0));
paint.setLooper(looper);
SkScalar height = paint.getFontMetrics(nullptr);
if (!fDecodeSucceeded) {
SkString failure;
if (fResPath.size() == 0) {
failure.printf("resource path is required!");
} else {
failure.printf("Failed to decode %s", fCurrFile.c_str());
}
canvas->drawText(failure.c_str(), failure.size(), 0, height, paint);
return;
}
// Name, size of the file, and whether or not it is premultiplied.
SkString header(SkOSPath::Basename(fCurrFile.c_str()));
header.appendf(" [%dx%d] %s", fBitmap.width(), fBitmap.height(),
(fPremul ? "premultiplied" : "unpremultiplied"));
canvas->drawText(header.c_str(), header.size(), 0, height, paint);
canvas->translate(0, height);
// Help messages
header.printf("Press '%c' to move to the next image.'", fNextImageChar);
canvas->drawText(header.c_str(), header.size(), 0, height, paint);
canvas->translate(0, height);
header.printf("Press '%c' to toggle premultiplied decode.", fTogglePremulChar);
canvas->drawText(header.c_str(), header.size(), 0, height, paint);
// Now draw the image itself.
canvas->translate(height * 2, height * 2);
if (!fPremul) {
// A premultiplied bitmap cannot currently be drawn.
SkAutoLockPixels alp(fBitmap);
// Copy it to a bitmap which can be drawn, converting
// to premultiplied:
SkBitmap bm;
bm.allocN32Pixels(fBitmap.width(), fBitmap.height());
for (int i = 0; i < fBitmap.width(); ++i) {
for (int j = 0; j < fBitmap.height(); ++j) {
*bm.getAddr32(i, j) = premultiply_unpmcolor(*fBitmap.getAddr32(i, j));
}
}
canvas->drawBitmap(bm, 0, 0);
} else {
canvas->drawBitmap(fBitmap, 0, 0);
}
}
// Return fontmetrics.fTop,fBottom in topbot[0,1], after they have been
// tweaked by paint.computeFastBounds().
//
static void computeFontMetricsTopBottom(const SkPaint& paint, SkScalar topbot[2]) {
SkPaint::FontMetrics metrics;
paint.getFontMetrics(&metrics);
SkRect bounds;
// construct a rect so we can see any adjustments from the paint.
// we use 0,1 for left,right, just so the rect isn't empty
bounds.set(0, metrics.fTop, SK_Scalar1, metrics.fBottom);
(void)paint.computeFastBounds(bounds, &bounds);
topbot[0] = bounds.fTop;
topbot[1] = bounds.fBottom;
}
void SkPictureRecord::addFontMetricsTopBottom(const SkPaint& paint,
SkScalar baselineY) {
SkPaint::FontMetrics metrics;
paint.getFontMetrics(&metrics);
SkRect bounds;
// construct a rect so we can see any adjustments from the paint.
// we use 0,1 for left,right, just so the rect isn't empty
bounds.set(0, metrics.fTop + baselineY,
SK_Scalar1, metrics.fBottom + baselineY);
(void)paint.computeFastBounds(bounds, &bounds);
// now record the top and bottom
addScalar(bounds.fTop);
addScalar(bounds.fBottom);
}
void SimpleFontData::platformInit()
{
SkPaint paint;
SkPaint::FontMetrics metrics;
m_font.setupPaint(&paint);
paint.getFontMetrics(&metrics);
// Beware those who step here: This code is designed to match Win32 font
// metrics *exactly*.
if (metrics.fVDMXMetricsValid) {
m_ascent = metrics.fVDMXAscent;
m_descent = metrics.fVDMXDescent;
} else {
m_ascent = SkScalarRound(-metrics.fAscent);
m_descent = SkScalarRound(metrics.fHeight) - m_ascent;
}
if (metrics.fXHeight)
m_xHeight = metrics.fXHeight;
else {
// hack taken from the Windows port
m_xHeight = static_cast<float>(m_ascent) * 0.56;
}
m_lineGap = SkScalarRound(metrics.fLeading);
m_lineSpacing = m_ascent + m_descent + m_lineGap;
// In WebKit/WebCore/platform/graphics/SimpleFontData.cpp, m_spaceWidth is
// calculated for us, but we need to calculate m_maxCharWidth and
// m_avgCharWidth in order for text entry widgets to be sized correctly.
m_maxCharWidth = SkScalarRound(metrics.fXRange * SkScalarRound(m_font.size()));
if (metrics.fAvgCharWidth)
m_avgCharWidth = SkScalarRound(metrics.fAvgCharWidth);
else {
m_avgCharWidth = m_xHeight;
GlyphPage* glyphPageZero = GlyphPageTreeNode::getRootChild(this, 0)->page();
if (glyphPageZero) {
static const UChar32 x_char = 'x';
const Glyph xGlyph = glyphPageZero->glyphDataForCharacter(x_char).glyph;
if (xGlyph)
m_avgCharWidth = widthForGlyph(xGlyph);
}
}
}
virtual void onDraw(SkCanvas* canvas) {
this->drawBG(canvas);
SkPaint paint;
// test handling of obscene cubic values (currently broken)
if (false) {
SkPoint pts[4];
pts[0].set(1.61061274e+09, 6291456);
pts[1].set(-7.18397061e+15, -1.53091184e+13);
pts[2].set(-1.30077315e+16, -2.77196141e+13);
pts[3].set(-1.30077315e+16, -2.77196162e+13);
SkPath path;
path.moveTo(pts[0]);
path.cubicTo(pts[1], pts[2], pts[3]);
canvas->drawPath(path, paint);
}
canvas->translate(200, 20);
canvas->rotate(30);
paint.setAntiAlias(true);
paint.setTypeface(SkTypeface::CreateFromName("Times Roman", SkTypeface::kNormal))->safeUnref();
// const char* text = "abcdefghijklmnopqrstuvwxyz";
const char* text = "HnHnHnHnHnHnHnHnH";
size_t textLen = strlen(text);
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(20);
{
SkPaint p;
p.setColor(SK_ColorRED);
SkRect r;
r.set(0, 0, x, y*20);
canvas->drawRect(r, p);
}
int index = 0;
for (int ps = 9; ps <= 24; ps++) {
textLen = strlen(text);
paint.setTextSize(SkIntToScalar(ps));
canvas->drawText(text, textLen, x, y, paint);
y += paint.getFontMetrics(NULL);
index += 1;
}
}
static HB_Fixed getFontMetric(HB_Font hbFont, HB_FontMetric metric)
{
SkPaint* paint = static_cast<SkPaint*>(hbFont->userData);
SkPaint::FontMetrics skiaMetrics;
paint->getFontMetrics(&skiaMetrics);
switch (metric) {
case HB_FontAscent:
return SkScalarToHBFixed(-skiaMetrics.fAscent);
// We don't support getting the rest of the metrics and Harfbuzz doesn't seem to need them.
default:
return 0;
}
return 0;
}
void SkBBoxRecord::onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
const SkPaint& paint) {
SkRect bbox;
paint.measureText(text, byteLength, &bbox);
SkPaint::FontMetrics metrics;
paint.getFontMetrics(&metrics);
// Vertical and aligned text need to be offset
if (paint.isVerticalText()) {
SkScalar h = bbox.fBottom - bbox.fTop;
if (paint.getTextAlign() == SkPaint::kCenter_Align) {
bbox.fTop -= h / 2;
bbox.fBottom -= h / 2;
}
// Pad top and bottom with max extents from FontMetrics
bbox.fBottom += metrics.fBottom;
bbox.fTop += metrics.fTop;
} else {
SkScalar w = bbox.fRight - bbox.fLeft;
if (paint.getTextAlign() == SkPaint::kCenter_Align) {
bbox.fLeft -= w / 2;
bbox.fRight -= w / 2;
} else if (paint.getTextAlign() == SkPaint::kRight_Align) {
bbox.fLeft -= w;
bbox.fRight -= w;
}
// Set vertical bounds to max extents from font metrics
bbox.fTop = metrics.fTop;
bbox.fBottom = metrics.fBottom;
}
// Pad horizontal bounds on each side by half of max vertical extents (this is sort of
// arbitrary, but seems to produce reasonable results, if there were a way of getting max
// glyph X-extents to pad by, that may be better here, but FontMetrics fXMin and fXMax seem
// incorrect on most platforms (too small in Linux, never even set in Windows).
SkScalar pad = (metrics.fBottom - metrics.fTop) / 2;
bbox.fLeft -= pad;
bbox.fRight += pad;
bbox.fLeft += x;
bbox.fRight += x;
bbox.fTop += y;
bbox.fBottom += y;
if (this->transformBounds(bbox, &paint)) {
INHERITED::onDrawText(text, byteLength, x, y, paint);
}
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setLCDRenderText(true);
SkAutoTUnref<SkFontMgr> fontMgr(SkFontMgr::RefDefault());
SkAutoTDelete<SkStreamAsset> distortable(GetResourceAsStream("/fonts/Distortable.ttf"));
if (!distortable) {
return;
}
const char* text = "abc";
const size_t textLen = strlen(text);
for (int j = 0; j < 2; ++j) {
for (int i = 0; i < 5; ++i) {
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(20);
SkFourByteTag tag = SkSetFourByteTag('w','g','h','t');
SkScalar styleValue = SkDoubleToScalar(0.5 + (5*j + i) * ((2.0 - 0.5) / (2 * 5)));
SkFontMgr::FontParameters::Axis axes[] = { { tag, styleValue } };
paint.setTypeface(sk_sp<SkTypeface>(fontMgr->createFromStream(
distortable->duplicate(), SkFontMgr::FontParameters().setAxes(axes, 1))));
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(SkIntToScalar(30 + i * 100), SkIntToScalar(20));
rotate_about(canvas, SkIntToScalar(i * 5), x, y * 10);
{
SkPaint p;
p.setAntiAlias(true);
SkRect r;
r.set(x - SkIntToScalar(3), SkIntToScalar(15),
x - SkIntToScalar(1), SkIntToScalar(280));
canvas->drawRect(r, p);
}
for (int ps = 6; ps <= 22; ps++) {
paint.setTextSize(SkIntToScalar(ps));
canvas->drawText(text, textLen, x, y, paint);
y += paint.getFontMetrics(nullptr);
}
}
canvas->translate(0, SkIntToScalar(360));
paint.setSubpixelText(true);
}
}
FloatRect Font::selectionRectForComplexText(const TextRun& run,
const IntPoint& point, int h, int, int) const
{
SkPaint paint;
SkScalar width, left;
SkPaint::FontMetrics metrics;
primaryFont()->platformData().setupPaint(&paint);
width = paint.measureText(run.characters(), run.length() << 1);
SkScalar spacing = paint.getFontMetrics(&metrics);
return FloatRect(point.x(),
point.y() - floorf(SkScalarToFloat(-metrics.fAscent)),
roundf(SkScalarToFloat(width)),
roundf(SkScalarToFloat(spacing)));
}
void SkBBoxRecord::onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
const SkMatrix* matrix, const SkPaint& paint) {
SkRect bbox = path.getBounds();
SkPaint::FontMetrics metrics;
paint.getFontMetrics(&metrics);
// pad out all sides by the max glyph height above baseline
SkScalar pad = metrics.fTop;
bbox.fLeft += pad;
bbox.fRight -= pad;
bbox.fTop += pad;
bbox.fBottom -= pad;
if (this->transformBounds(bbox, &paint)) {
INHERITED::onDrawTextOnPath(text, byteLength, path, matrix, paint);
}
}
static HB_Fixed getFontMetric(HB_Font hbFont, HB_FontMetric metric)
{
SkHarfBuzzFont* font = reinterpret_cast<SkHarfBuzzFont*>(hbFont->userData);
SkPaint paint;
SkPaint::FontMetrics skiaMetrics;
font->setupPaint(&paint);
paint.getFontMetrics(&skiaMetrics);
switch (metric) {
case HB_FontAscent:
return SkScalarToHarfbuzzFixed(-skiaMetrics.fAscent);
default:
SkDebugf("--- unknown harfbuzz metric enum %d\n", metric);
return 0;
}
}
static HB_Fixed getFontMetric(HB_Font hbFont, HB_FontMetric metric)
{
FontPlatformData* font = reinterpret_cast<FontPlatformData*>(hbFont->userData);
SkPaint paint;
font->setupPaint(&paint);
SkPaint::FontMetrics skiaMetrics;
paint.getFontMetrics(&skiaMetrics);
switch (metric) {
case HB_FontAscent:
return SkiaScalarToHarfbuzzFixed(-skiaMetrics.fAscent);
// We don't support getting the rest of the metrics and Harfbuzz doesn't seem to need them.
default:
return 0;
}
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setLCDRenderText(true);
SkAutoTDelete<SkStreamAsset> distortable(GetResourceAsStream("/fonts/Distortable.ttf"));
if (!distortable) {
return;
}
const char* text = "abc";
const size_t textLen = strlen(text);
for (int j = 0; j < 2; ++j) {
for (int i = 0; i < 5; ++i) {
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(20);
SkFixed axis = SkDoubleToFixed(0.5 + (5*j + i) * ((2.0 - 0.5) / (2 * 5)));
SkAutoTUnref<SkTypeface> typeface(SkTypeface::CreateFromFontData(
new SkFontData(distortable->duplicate(), 0, &axis, 1)));
paint.setTypeface(typeface);
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(SkIntToScalar(30 + i * 100), SkIntToScalar(20));
rotate_about(canvas, SkIntToScalar(i * 5), x, y * 10);
{
SkPaint p;
p.setAntiAlias(true);
SkRect r;
r.set(x - SkIntToScalar(3), SkIntToScalar(15),
x - SkIntToScalar(1), SkIntToScalar(280));
canvas->drawRect(r, p);
}
for (int ps = 6; ps <= 22; ps++) {
paint.setTextSize(SkIntToScalar(ps));
canvas->drawText(text, textLen, x, y, paint);
y += paint.getFontMetrics(nullptr);
}
}
canvas->translate(0, SkIntToScalar(360));
paint.setSubpixelText(true);
}
}
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setLCDRenderText(true);
//With freetype the default (normal hinting) can be really ugly.
//Most distros now set slight (vertical hinting only) in any event.
paint.setHinting(SkPaint::kSlight_Hinting);
SkSafeUnref(paint.setTypeface(SkTypeface::CreateFromName("Times Roman", SkTypeface::kNormal)));
const char* text = "Hamburgefons ooo mmm";
const size_t textLen = strlen(text);
for (int j = 0; j < 2; ++j) {
// This used to do 6 iterations but it causes the N4 to crash in the MSAA4 config.
for (int i = 0; i < 5; ++i) {
SkScalar x = SkIntToScalar(10);
SkScalar y = SkIntToScalar(20);
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(SkIntToScalar(50 + i * 230),
SkIntToScalar(20));
rotate_about(canvas, SkIntToScalar(i * 5), x, y * 10);
{
SkPaint p;
p.setAntiAlias(true);
SkRect r;
r.set(x - SkIntToScalar(3), SkIntToScalar(15),
x - SkIntToScalar(1), SkIntToScalar(280));
canvas->drawRect(r, p);
}
int index = 0;
for (int ps = 6; ps <= 22; ps++) {
paint.setTextSize(SkIntToScalar(ps));
canvas->drawText(text, textLen, x, y, paint);
y += paint.getFontMetrics(NULL);
index += 1;
}
}
canvas->translate(0, SkIntToScalar(360));
paint.setSubpixelText(true);
}
}
void SkBBoxRecord::drawPosText(const void* text, size_t byteLength,
const SkPoint pos[], const SkPaint& paint) {
SkRect bbox;
bbox.set(pos, paint.countText(text, byteLength));
SkPaint::FontMetrics metrics;
paint.getFontMetrics(&metrics);
bbox.fTop += metrics.fTop;
bbox.fBottom += metrics.fBottom;
// pad on left and right by half of max vertical glyph extents
SkScalar pad = (metrics.fTop - metrics.fBottom) / 2;
bbox.fLeft += pad;
bbox.fRight -= pad;
if (this->transformBounds(bbox, &paint)) {
INHERITED::drawPosText(text, byteLength, pos, paint);
}
}
static void call_measure() {
SkPaint paint;
uint16_t text[32];
SkRandom rand;
paint.setAntiAlias(true);
paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
for (int j = 0; j < SK_ARRAY_COUNT(text); j++)
text[j] = (uint16_t)((rand.nextU() & 0xFF) + 32);
for (int i = 9; i < 36; i++) {
SkPaint::FontMetrics m;
paint.setTextSize(SkIntToScalar(i));
paint.getFontMetrics(&m);
paint.measureText(text, sizeof(text));
}
}
static void doMeasure(SkCanvas* canvas, const SkPaint& paint, const char text[]) {
SkScalar dy = paint.getFontMetrics(NULL);
size_t len = strlen(text);
SkAutoTMalloc<SkScalar> autoWidths(len);
SkScalar* widths = autoWidths.get();
SkAutoTMalloc<SkRect> autoRects(len);
SkRect* rects = autoRects.get();
SkRect bounds;
SkPaint p(paint);
for (size_t i = 0; i < SK_ARRAY_COUNT(gSettings); i++) {
p.setLinearText(gSettings[i].fLinearText);
p.setDevKernText(gSettings[i].fDevKernText);
SkScalar scale = gSettings[i].fScale;
int n = p.getTextWidths(text, len, widths, rects);
SkScalar w = p.measureText(text, len, &bounds, scale);
p.setStyle(SkPaint::kFill_Style);
p.setColor(0x8888FF88);
canvas->drawRect(bounds, p);
p.setColor(0xFF000000);
canvas->drawText(text, len, 0, 0, p);
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeWidth(0);
p.setColor(0xFFFF0000);
SkScalar x = 0;
for (int j = 0; j < n; j++) {
SkRect r = rects[j];
r.offset(x, 0);
canvas->drawRect(r, p);
x += widths[j];
}
p.setColor(0xFF0000FF);
canvas->drawLine(0, 0, w, 0, p);
p.setStrokeWidth(SkIntToScalar(4));
canvas->drawPoint(x, 0, p);
canvas->translate(0, dy);
}
}
bool SkDrawPaint::getProperty(int index, SkScriptValue* value) const {
SkPaint::FontMetrics metrics;
SkPaint paint;
setupPaint(&paint);
paint.getFontMetrics(&metrics);
switch (index) {
case SK_PROPERTY(ascent):
value->fOperand.fScalar = metrics.fAscent;
break;
case SK_PROPERTY(descent):
value->fOperand.fScalar = metrics.fDescent;
break;
// should consider returning fLeading as well (or roll it into ascent/descent somehow
default:
SkASSERT(0);
return false;
}
value->fType = SkType_Float;
return true;
}
void init() {
fTypeface = chinese_typeface();
SkPaint paint;
make_paint(&paint, fTypeface);
paint.getFontMetrics(&fMetrics);
SkUnichar glyphs[kWordLength];
for (int32_t i = 0; i < kNumBlobs; ++i) {
this->createRandomWord(glyphs);
SkTextBlobBuilder builder;
sk_tool_utils::add_to_text_blob_w_len(&builder, (const char*) glyphs, kWordLength*4,
paint, 0, 0);
fBlobs.emplace_back(builder.make());
}
fIndex = 0;
}
static void AdjustTextForFontMetrics(SkRect* rect, const SkPaint& paint) {
#ifdef SK_DEBUG
SkRect correct = *rect;
#endif
// crbug.com/373785 ~~> xPad = 4x yPad
// crbug.com/424824 ~~> bump yPad from 2x text size to 2.5x
const SkScalar yPad = 2.5f * paint.getTextSize(),
xPad = 4.0f * yPad;
rect->outset(xPad, yPad);
#ifdef SK_DEBUG
SkPaint::FontMetrics metrics;
paint.getFontMetrics(&metrics);
correct.fLeft += metrics.fXMin;
correct.fTop += metrics.fTop;
correct.fRight += metrics.fXMax;
correct.fBottom += metrics.fBottom;
// See skia:2862 for why we ignore small text sizes.
SkASSERTF(paint.getTextSize() < 0.001f || rect->contains(correct),
"%f %f %f %f vs. %f %f %f %f\n",
-xPad, -yPad, +xPad, +yPad,
metrics.fXMin, metrics.fTop, metrics.fXMax, metrics.fBottom);
#endif
}
static void drawFadingText(SkCanvas* canvas,
const char* text, size_t len, SkScalar x, SkScalar y,
const SkPaint& paint) {
// Need a bounds for the text
SkRect bounds;
SkPaint::FontMetrics fm;
paint.getFontMetrics(&fm);
bounds.set(x, y + fm.fTop, x + paint.measureText(text, len), y + fm.fBottom);
// may need to outset bounds a little, to account for hinting and/or
// antialiasing
bounds.inset(-SkIntToScalar(2), -SkIntToScalar(2));
canvas->saveLayer(&bounds, NULL);
canvas->drawText(text, len, x, y, paint);
const SkPoint pts[] = {
{ bounds.fLeft, y },
{ bounds.fRight, y }
};
const SkColor colors[] = { SK_ColorBLACK, SK_ColorBLACK, 0 };
// pos[1] value is where we start to fade, relative to the width
// of our pts[] array.
const SkScalar pos[] = { 0, SkFloatToScalar(0.9f), SK_Scalar1 };
SkShader* s = SkGradientShader::CreateLinear(pts, colors, pos, 3,
SkShader::kClamp_TileMode);
SkPaint p;
p.setShader(s)->unref();
p.setXfermodeMode(SkXfermode::kDstIn_Mode);
canvas->drawRect(bounds, p);
canvas->restore();
}