void anchor_handle_renderer::draw_anchor (SkCanvas &canvas, const SkRect &rect, SkPaint &paint) const
{
switch (m_node_type)
{
case handle_type::DIAMOND:
{
canvas.save ();
canvas.translate (rect.centerX (), rect.centerY ());
canvas.rotate (45);
SkRect moved_rect = rect;
moved_rect.offset (-rect.centerX (), -rect.centerY ());
paint.setAntiAlias (true);
canvas.drawRect (moved_rect, paint);
canvas.restore ();
break;
}
case handle_type::SQUARE:
canvas.drawRect (rect, paint);
break;
case handle_type::CIRCLE:
canvas.drawOval (rect, paint);
break;
case handle_type::DOUBLE_HEADED_ARROW:
case handle_type::ROTATE_ARROW:
SkPath path = qt2skia::path (*m_paths.at (m_node_type));
SkMatrix trans;
trans.setIdentity ();
trans.postRotate (m_rotation_angle, 32, 32); // TODO: change all these to use info from path_storage (bounding box and center (possibly should be made 0))
trans.postConcat (qt2skia::matrix (geom::rect2rect (QRectF (0, 0, 64, 64), qt2skia::rect (rect))));
path.transform (trans);
paint.setAntiAlias (true);
canvas.drawPath (path, paint);
break;
}
}
static void drawRectWithLines(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
canvas->drawRect(r, p);
canvas->drawLine(r.fLeft, r.fTop, r.fRight, r.fBottom, p);
canvas->drawLine(r.fLeft, r.fBottom, r.fRight, r.fTop, p);
canvas->drawLine(r.fLeft, r.centerY(), r.fRight, r.centerY(), p);
canvas->drawLine(r.centerX(), r.fTop, r.centerX(), r.fBottom, p);
}
bool intersects(SkRect tRect, float tRot, TextDrawInfo* s)
{
float sRot = s->pathRotate;
if (absFloat(tRot) < M_PI / 15 && absFloat(sRot) < M_PI / 15) {
return SkRect::Intersects(tRect, s->bounds);
}
float dist = sqrt(sqr(tRect.centerX() - s->bounds.centerX()) + sqr(tRect.centerY() - s->bounds.centerY()));
if(dist < 3) {
return true;
}
SkRect sRect = s->bounds;
// difference close to 90/270 degrees
if(absFloat(cos(tRot-sRot)) < 0.3 ){
// rotate one rectangle to 90 degrees
tRot += M_PI_2;
tRect = SkRect::MakeXYWH(tRect.centerX() - tRect.height() / 2, tRect.centerY() - tRect.width() / 2,
tRect.height(), tRect.width());
}
// determine difference close to 180/0 degrees
if(absFloat(sin(tRot-sRot)) < 0.3){
// rotate t box
// (calculate offset for t center suppose we rotate around s center)
float diff = atan2(tRect.centerY() - sRect.centerY(), tRect.centerX() - sRect.centerX());
diff -= sRot;
float left = sRect.centerX() + dist* cos(diff) - tRect.width()/2;
float top = sRect.centerY() - dist* sin(diff) - tRect.height()/2;
SkRect nRect = SkRect::MakeXYWH(left, top, tRect.width(), tRect.height());
return SkRect::Intersects(nRect, sRect);
}
// TODO other cases not covered
return SkRect::Intersects(tRect, sRect);
}
void onDraw(SkCanvas* canvas) override {
SkAutoCanvasRestore acr(canvas, false);
SkPaint paint;
paint.setAntiAlias(true);
if (fInterp) {
SkScalar values[5];
SkInterpolator::Result res = fInterp->timeToValues(fTime, values);
fColor = floats_to_color(values);
canvas->save();
canvas->translate(fR.centerX(), fR.centerY());
canvas->rotate(values[4]);
canvas->translate(-fR.centerX(), -fR.centerY());
switch (res) {
case SkInterpolator::kFreezeEnd_Result:
delete fInterp;
fInterp = nullptr;
break;
default:
break;
}
}
paint.setColor(fColor);
canvas->drawRect(fR, paint);
}
void drawBorders(SkCanvas* canvas) {
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
p.setColor(SK_ColorBLUE);
SkRect r = SkRect::MakeWH(fCell.width() * 2, fCell.height() * 2);
r.inset(SK_ScalarHalf, SK_ScalarHalf);
canvas->drawRect(r, p);
canvas->drawLine(r.left(), r.centerY(), r.right(), r.centerY(), p);
canvas->drawLine(r.centerX(), r.top(), r.centerX(), r.bottom(), p);
}
void draw(SkCanvas* canvas) {
SkPaint paint;
paint.setColor(SK_ColorGRAY);
paint.setAntiAlias(true);
SkRect rect = {20, 20, 100, 100};
canvas->drawRect(rect, paint);
paint.setColor(SK_ColorRED);
SkMatrix matrix;
matrix.setRSXform(SkRSXform::Make(.85f, .25f, rect.centerX(), rect.centerY()));
canvas->concat(matrix);
canvas->translate(-rect.centerX(), -rect.centerY());
canvas->drawRect(rect, paint);
}
static void draw_path(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setColor(SK_ColorMAGENTA);
paint.setImageFilter(std::move(imf));
paint.setAntiAlias(true);
canvas->drawCircle(r.centerX(), r.centerY(), r.width()*2/5, paint);
}
void showPath(SkCanvas* canvas, int x, int y, SkPath::FillType ft,
SkScalar scale, const SkPaint& paint) {
const SkRect r = { 0, 0, SkIntToScalar(150), SkIntToScalar(150) };
canvas->save();
canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
canvas->clipRect(r);
canvas->drawColor(SK_ColorWHITE);
fPath.setFillType(ft);
canvas->translate(r.centerX(), r.centerY());
canvas->scale(scale, scale);
canvas->translate(-r.centerX(), -r.centerY());
canvas->drawPath(fPath, paint);
canvas->restore();
}
void SkSVGDevice::drawOval(const SkDraw& draw, const SkRect& oval, const SkPaint& paint) {
AutoElement ellipse("ellipse", fWriter, fResourceBucket, draw, paint);
ellipse.addAttribute("cx", oval.centerX());
ellipse.addAttribute("cy", oval.centerY());
ellipse.addAttribute("rx", oval.width() / 2);
ellipse.addAttribute("ry", oval.height() / 2);
}
PathTexture* PathCache::getArc(float width, float height,
float startAngle, float sweepAngle, bool useCenter, const SkPaint* paint) {
PathDescription entry(kShapeArc, paint);
entry.shape.arc.mWidth = width;
entry.shape.arc.mHeight = height;
entry.shape.arc.mStartAngle = startAngle;
entry.shape.arc.mSweepAngle = sweepAngle;
entry.shape.arc.mUseCenter = useCenter;
PathTexture* texture = get(entry);
if (!texture) {
SkPath path;
SkRect r;
r.set(0.0f, 0.0f, width, height);
if (useCenter) {
path.moveTo(r.centerX(), r.centerY());
}
path.arcTo(r, startAngle, sweepAngle, !useCenter);
if (useCenter) {
path.close();
}
texture = addTexture(entry, &path, paint);
}
return texture;
}
static void draw_sweep(SkCanvas* c, int width, int height, SkScalar angle) {
SkRect r;
SkPaint p;
p.setAntiAlias(true);
// p.setDither(true);
p.setStrokeWidth(SkIntToScalar(width/10));
p.setStyle(SkPaint::kStroke_Style);
r.set(0, 0, SkIntToScalar(width), SkIntToScalar(height));
// SkColor colors[] = { SK_ColorRED, SK_ColorBLUE, SK_ColorGREEN, SK_ColorCYAN };
SkColor colors[] = { 0x4c737373, 0x4c737373, 0xffffd300 };
SkShader* s = SkGradientShader::CreateSweep(r.centerX(), r.centerY(),
colors, NULL, SK_ARRAY_COUNT(colors));
p.setShader(s)->unref();
SkAutoCanvasRestore acr(c, true);
c->translate(r.centerX(), r.centerY());
c->rotate(angle);
c->translate(-r.centerX(), -r.centerY());
SkRect bounds = r;
r.inset(p.getStrokeWidth(), p.getStrokeWidth());
SkRect innerBounds = r;
if (true) {
c->drawOval(r, p);
} else {
SkScalar x = r.centerX();
SkScalar y = r.centerY();
SkScalar radius = r.width() / 2;
SkScalar thickness = p.getStrokeWidth();
SkScalar sweep = SkFloatToScalar(360.0f);
SkPath path;
path.moveTo(x + radius, y);
// outer top
path.lineTo(x + radius + thickness, y);
// outer arc
path.arcTo(bounds, 0, sweep, false);
// inner arc
path.arcTo(innerBounds, sweep, -sweep, false);
path.close();
}
}
static void draw_text(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setImageFilter(std::move(imf));
paint.setColor(SK_ColorGREEN);
SkFont font(ToolUtils::create_portable_typeface(), r.height() / 2);
SkTextUtils::DrawString(canvas, "Text", r.centerX(), r.centerY(), font, paint, SkTextUtils::kCenter_Align);
}
virtual void onDraw(SkCanvas* canvas) {
canvas->drawColor(SK_ColorGRAY);
SkPaint paint;
paint.setTypeface(fTypeface);
const char* text = "hamburgerfons";
// draw text at different point sizes
const int textSize[] = { 10, 30, 50 };
const int textYOffset[] = { 10, 40, 100};
SkASSERT(sizeof(textSize) == sizeof(textYOffset));
for (size_t y = 0; y < sizeof(textSize) / sizeof(int); ++y) {
paint.setTextSize(SkIntToScalar(textSize[y]));
canvas->drawText(text, strlen(text), 10, SkIntToScalar(textYOffset[y]), paint);
}
// setup work needed to draw text with different clips
canvas->translate(10, 160);
paint.setTextSize(40);
// compute the bounds of the text
SkRect bounds;
paint.measureText(text, strlen(text), &bounds);
const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
const SkScalar boundsQuarterWidth = boundsHalfWidth * SK_ScalarHalf;
const SkScalar boundsQuarterHeight = boundsHalfHeight * SK_ScalarHalf;
SkRect upperLeftClip = SkRect::MakeXYWH(bounds.left(), bounds.top(),
boundsHalfWidth, boundsHalfHeight);
SkRect lowerRightClip = SkRect::MakeXYWH(bounds.centerX(), bounds.centerY(),
boundsHalfWidth, boundsHalfHeight);
SkRect interiorClip = bounds;
interiorClip.inset(boundsQuarterWidth, boundsQuarterHeight);
const SkRect clipRects[] = { bounds, upperLeftClip, lowerRightClip, interiorClip };
SkPaint clipHairline;
clipHairline.setColor(SK_ColorWHITE);
clipHairline.setStyle(SkPaint::kStroke_Style);
for (size_t x = 0; x < sizeof(clipRects) / sizeof(SkRect); ++x) {
canvas->save();
canvas->drawRect(clipRects[x], clipHairline);
paint.setAlpha(0x20);
canvas->drawText(text, strlen(text), 0, 0, paint);
canvas->clipRect(clipRects[x]);
paint.setAlpha(0xFF);
canvas->drawText(text, strlen(text), 0, 0, paint);
canvas->restore();
canvas->translate(0, bounds.height() + SkIntToScalar(25));
}
}
static void draw_path(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
SkPaint paint;
paint.setColor(SK_ColorMAGENTA);
paint.setImageFilter(imf);
paint.setAntiAlias(true);
canvas->save();
canvas->clipRect(r);
canvas->drawCircle(r.centerX(), r.centerY(), r.width()*2/5, paint);
canvas->restore();
}
static void draw_text(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setImageFilter(std::move(imf));
paint.setColor(SK_ColorGREEN);
paint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&paint);
paint.setTextSize(r.height()/2);
paint.setTextAlign(SkPaint::kCenter_Align);
canvas->drawText("Text", 4, r.centerX(), r.centerY(), paint);
}
static void draw_path(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setColor(SK_ColorGREEN);
paint.setImageFilter(std::move(imf));
paint.setAntiAlias(true);
canvas->save();
canvas->clipRect(r);
canvas->drawCircle(r.centerX(), r.centerY(), r.width()/3, paint);
canvas->restore();
}
static void doDraw(SkCanvas* canvas, const SkPaint& paint, const char text[]) {
canvas->drawColor(SK_ColorWHITE);
SkPaint red;
red.setColor(SK_ColorRED);
canvas->drawCircle(150.0, 150.0, 100.0, red);
SkRect bounds;
canvas->getClipBounds(&bounds);
canvas->drawText(text, strlen(text),
bounds.centerX(), bounds.centerY(),
paint);
}
static void draw_center_letter(char c,
SkPaint* p,
SkColor color,
SkScalar x,
SkScalar y,
SkCanvas* canvas) {
SkRect bounds;
p->setColor(color);
p->measureText(&c, 1, &bounds);
canvas->drawText(&c, 1, x - bounds.centerX(), y - bounds.centerY(), *p);
}
static void draw_text(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
SkPaint paint;
paint.setImageFilter(imf);
paint.setColor(SK_ColorGREEN);
paint.setAntiAlias(true);
paint.setTextSize(r.height()/2);
paint.setTextAlign(SkPaint::kCenter_Align);
canvas->save();
canvas->clipRect(r);
canvas->drawText("Text", 4, r.centerX(), r.centerY(), paint);
canvas->restore();
}
static void compute_rects(SkRect* devOutside, SkRect* devOutsideAssist, SkRect* devInside,
bool* isDegenerate, const SkMatrix& viewMatrix, const SkRect& rect,
SkScalar strokeWidth, bool miterStroke) {
SkRect devRect;
viewMatrix.mapRect(&devRect, rect);
SkVector devStrokeSize;
if (strokeWidth > 0) {
devStrokeSize.set(strokeWidth, strokeWidth);
viewMatrix.mapVectors(&devStrokeSize, 1);
devStrokeSize.setAbs(devStrokeSize);
} else {
devStrokeSize.set(SK_Scalar1, SK_Scalar1);
}
const SkScalar dx = devStrokeSize.fX;
const SkScalar dy = devStrokeSize.fY;
const SkScalar rx = SkScalarMul(dx, SK_ScalarHalf);
const SkScalar ry = SkScalarMul(dy, SK_ScalarHalf);
*devOutside = devRect;
*devOutsideAssist = devRect;
*devInside = devRect;
devOutside->outset(rx, ry);
devInside->inset(rx, ry);
// If we have a degenerate stroking rect(ie the stroke is larger than inner rect) then we
// make a degenerate inside rect to avoid double hitting. We will also jam all of the points
// together when we render these rects.
SkScalar spare;
{
SkScalar w = devRect.width() - dx;
SkScalar h = devRect.height() - dy;
spare = SkTMin(w, h);
}
*isDegenerate = spare <= 0;
if (*isDegenerate) {
devInside->fLeft = devInside->fRight = devRect.centerX();
devInside->fTop = devInside->fBottom = devRect.centerY();
}
// For bevel-stroke, use 2 SkRect instances(devOutside and devOutsideAssist)
// to draw the outside of the octagon. Because there are 8 vertices on the outer
// edge, while vertex number of inner edge is 4, the same as miter-stroke.
if (!miterStroke) {
devOutside->inset(0, ry);
devOutsideAssist->outset(0, ry);
}
}
void drawTestBox(SkCanvas* cv, SkRect* r, float rot, SkPaint* paintIcon, std::string text, SkPaint* paintText)
{
cv->save();
cv->translate(r->centerX(),r->centerY());
cv->rotate(rot * 180 / M_PI);
SkRect rs = SkRect::MakeLTRB(-r->width()/2, -r->height()/2,
r->width()/2, r->height()/2);
cv->drawRect(rs, *paintIcon);
if (paintText != NULL) {
cv->drawText(text.data(), text.length(), rs.centerX(), rs.centerY(),
*paintText);
}
cv->restore();
}
static void draw_label(SkCanvas* canvas, const SkRect& rect,
int start, int sweep) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextAlign(SkPaint::kCenter_Align);
SkString str;
str.appendS32(start);
str.append(", ");
str.appendS32(sweep);
canvas->drawText(str.c_str(), str.size(), rect.centerX(),
rect.fBottom + paint.getTextSize() * 5/4, paint);
}
static void draw_clipped_filter(SkCanvas* canvas, sk_sp<SkImageFilter> filter, size_t i,
const SkRect& primBounds, const SkRect& clipBounds) {
SkPaint paint;
paint.setColor(SK_ColorWHITE);
paint.setImageFilter(std::move(filter));
paint.setAntiAlias(true);
canvas->save();
canvas->clipRect(clipBounds);
if (5 == i) {
canvas->translate(SkIntToScalar(16), SkIntToScalar(-32));
} else if (6 == i) {
canvas->scale(SkScalarInvert(RESIZE_FACTOR_X), SkScalarInvert(RESIZE_FACTOR_Y));
}
canvas->drawCircle(primBounds.centerX(), primBounds.centerY(),
primBounds.width() * 2 / 5, paint);
canvas->restore();
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&paint);
paint.setTextSize(1500);
SkRect r;
(void)paint.measureText("/", 1, &r);
SkPoint pos = {
this->width()/2 - r.centerX(),
this->height()/2 - r.centerY()
};
paint.setColor(SK_ColorRED);
canvas->drawString("/", pos.fX, pos.fY, paint);
paint.setColor(SK_ColorBLUE);
canvas->drawPosText("\\", 1, &pos, paint);
}
void onDrawContent(SkCanvas* canvas) override {
const SkRect oval = fOval.makeOffset(fCenter.fX - fOval.centerX(),
fCenter.fY - fOval.centerY());
SkPaint p;
p.setAntiAlias(true);
p.setStyle(SkPaint::kStroke_Style);
canvas->drawOval(oval, p);
const SkRect r = SkRect::MakeLTRB(200, 200, 300, 300);
canvas->clipRect(r);
p.setStyle(SkPaint::kFill_Style);
p.setColor(SK_ColorRED);
canvas->drawRect(r, p);
p.setColor(0x800000FF);
canvas->drawOval(oval, p);
}
PathTexture* ArcShapeCache::getArc(float width, float height,
float startAngle, float sweepAngle, bool useCenter, SkPaint* paint) {
ArcShapeCacheEntry entry(width, height, startAngle, sweepAngle, useCenter, paint);
PathTexture* texture = get(entry);
if (!texture) {
SkPath path;
SkRect r;
r.set(0.0f, 0.0f, width, height);
if (useCenter) {
path.moveTo(r.centerX(), r.centerY());
}
path.arcTo(r, startAngle, sweepAngle, !useCenter);
if (useCenter) {
path.close();
}
texture = addTexture(entry, &path, paint);
}
return texture;
}
void onDrawContent(SkCanvas* canvas) override {
SkRect oval = fOval;
oval.offset(fCenter.fX - oval.centerX(), fCenter.fY - oval.centerY());
SkPaint p;
p.setAntiAlias(true);
p.setStyle(SkPaint::kStroke_Style);
canvas->drawOval(oval, p);
SkRect r;
r.set(SkIntToScalar(200), SkIntToScalar(200),
SkIntToScalar(300), SkIntToScalar(300));
canvas->clipRect(r);
p.setStyle(SkPaint::kFill_Style);
p.setColor(SK_ColorRED);
canvas->drawRect(r, p);
p.setColor(0x800000FF);
r.set(SkIntToScalar(150), SkIntToScalar(10),
SkIntToScalar(250), SkIntToScalar(400));
canvas->drawOval(oval, p);
}
static void draw_oval(SkCanvas* canvas, bool showGL, int flags) {
SkPaint paint;
paint.setAntiAlias(true);
SkRect r = SkRect::MakeLTRB(50, 70, 250, 370);
setFade(&paint, showGL);
canvas->drawOval(r, paint);
if (showGL) {
switch (flags) {
case 0: {
SkPath path;
path.addOval(r);
show_glframe(canvas, path);
} break;
case 1:
case 3: {
SkPath src, dst;
src.addOval(r);
tesselate(src, &dst);
show_fan(canvas, dst, r.centerX(), r.centerY());
} break;
case 2: {
SkPaint p(paint);
show_mesh(canvas, r);
setGLFrame(&p);
paint.setStyle(SkPaint::kFill_Style);
canvas->drawCircle(r.centerX(), r.centerY(), 3, p);
} break;
}
}
canvas->translate(320, 0);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(25);
canvas->drawOval(r, paint);
if (showGL) {
switch (flags) {
case 0: {
SkPath path;
SkScalar rad = paint.getStrokeWidth() / 2;
r.outset(rad, rad);
path.addOval(r);
r.inset(rad*2, rad*2);
path.addOval(r);
show_glframe(canvas, path);
} break;
case 1: {
SkPath path0, path1;
SkScalar rad = paint.getStrokeWidth() / 2;
r.outset(rad, rad);
path0.addOval(r);
r.inset(rad*2, rad*2);
path1.addOval(r);
show_mesh_between(canvas, path0, path1);
} break;
case 2: {
SkPath path;
path.addOval(r);
show_glframe(canvas, path);
SkScalar rad = paint.getStrokeWidth() / 2;
r.outset(rad, rad);
show_mesh(canvas, r);
} break;
case 3: {
SkScalar rad = paint.getStrokeWidth() / 2;
r.outset(rad, rad);
SkPaint paint;
paint.setAlpha(0x33);
canvas->drawRect(r, paint);
show_mesh(canvas, r);
} break;
}
}
}
virtual void onDraw(SkCanvas* canvas) {
if (!fInitialized) {
this->make_checkerboard();
this->make_gradient_circle(64, 64);
fInitialized = true;
}
canvas->clear(0x00000000);
SkAutoTUnref<SkImageFilter> gradient(SkBitmapSource::Create(fGradientCircle));
SkAutoTUnref<SkImageFilter> checkerboard(SkBitmapSource::Create(fCheckerboard));
SkAutoTUnref<SkShader> noise(SkPerlinNoiseShader::CreateFractalNoise(
SkDoubleToScalar(0.1), SkDoubleToScalar(0.05), 1, 0));
SkMatrix resizeMatrix;
resizeMatrix.setScale(RESIZE_FACTOR_X, RESIZE_FACTOR_Y);
SkImageFilter* filters[] = {
SkBlurImageFilter::Create(SkIntToScalar(12), SkIntToScalar(12)),
SkDropShadowImageFilter::Create(SkIntToScalar(10), SkIntToScalar(10), SkIntToScalar(3),
SK_ColorGREEN),
SkDisplacementMapEffect::Create(SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkIntToScalar(12),
gradient.get(),
checkerboard.get()),
SkDilateImageFilter::Create(2, 2, checkerboard.get()),
SkErodeImageFilter::Create(2, 2, checkerboard.get()),
SkOffsetImageFilter::Create(SkIntToScalar(-16), SkIntToScalar(32)),
SkMatrixImageFilter::Create(resizeMatrix, SkPaint::kNone_FilterLevel),
SkRectShaderImageFilter::Create(noise),
};
SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
SkScalar margin = SkIntToScalar(16);
SkRect bounds = r;
bounds.outset(margin, margin);
for (int xOffset = 0; xOffset < 80; xOffset += 16) {
canvas->save();
bounds.fLeft = SkIntToScalar(xOffset);
for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
SkPaint paint;
paint.setColor(SK_ColorWHITE);
paint.setImageFilter(filters[i]);
paint.setAntiAlias(true);
canvas->save();
canvas->clipRect(bounds);
if (5 == i) {
canvas->translate(SkIntToScalar(16), SkIntToScalar(-32));
} else if (6 == i) {
canvas->scale(SkScalarInvert(RESIZE_FACTOR_X),
SkScalarInvert(RESIZE_FACTOR_Y));
}
canvas->drawCircle(r.centerX(), r.centerY(),
SkScalarDiv(r.width()*2, SkIntToScalar(5)), paint);
canvas->restore();
canvas->translate(r.width() + margin, 0);
}
canvas->restore();
canvas->translate(0, r.height() + margin);
}
for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
SkSafeUnref(filters[i]);
}
}
void onDraw(SkCanvas* canvas) override {
canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
SkPaint paint;
paint.setTypeface(emojiFont.typeface);
const char* text = emojiFont.text;
// draw text at different point sizes
const int textSize[] = { 10, 30, 50, };
const int textYOffset[] = { 10, 40, 100, };
SkASSERT(sizeof(textSize) == sizeof(textYOffset));
size_t y_offset = 0;
for (size_t y = 0; y < sizeof(textSize) / sizeof(int); y++) {
paint.setTextSize(SkIntToScalar(textSize[y]));
canvas->drawText(text, strlen(text), 10, SkIntToScalar(textYOffset[y]), paint);
y_offset += textYOffset[y];
}
// draw with shaders and image filters
for (int makeLinear = 0; makeLinear < 2; makeLinear++) {
for (int makeBlur = 0; makeBlur < 2; makeBlur++) {
for (int makeGray = 0; makeGray < 2; makeGray++) {
SkPaint shaderPaint;
shaderPaint.setTypeface(paint.getTypeface());
if (SkToBool(makeLinear)) {
shaderPaint.setShader(MakeLinear())->unref();
}
if (SkToBool(makeBlur) && SkToBool(makeGray)) {
SkAutoTUnref<SkImageFilter> grayScale(make_grayscale(nullptr));
SkAutoTUnref<SkImageFilter> blur(make_blur(3.0f, grayScale));
shaderPaint.setImageFilter(blur);
} else if (SkToBool(makeBlur)) {
SkAutoTUnref<SkImageFilter> blur(make_blur(3.0f, nullptr));
shaderPaint.setImageFilter(blur);
} else if (SkToBool(makeGray)) {
SkAutoTUnref<SkImageFilter> grayScale(make_grayscale(nullptr));
shaderPaint.setImageFilter(grayScale);
}
shaderPaint.setTextSize(30);
canvas->drawText(text, strlen(text), 380, SkIntToScalar(y_offset),
shaderPaint);
y_offset += 32;
}
}
}
// setup work needed to draw text with different clips
canvas->translate(10, 160);
paint.setTextSize(40);
// compute the bounds of the text
SkRect bounds;
paint.measureText(text, strlen(text), &bounds);
const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf;
const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf;
const SkScalar boundsQuarterWidth = boundsHalfWidth * SK_ScalarHalf;
const SkScalar boundsQuarterHeight = boundsHalfHeight * SK_ScalarHalf;
SkRect upperLeftClip = SkRect::MakeXYWH(bounds.left(), bounds.top(),
boundsHalfWidth, boundsHalfHeight);
SkRect lowerRightClip = SkRect::MakeXYWH(bounds.centerX(), bounds.centerY(),
boundsHalfWidth, boundsHalfHeight);
SkRect interiorClip = bounds;
interiorClip.inset(boundsQuarterWidth, boundsQuarterHeight);
const SkRect clipRects[] = { bounds, upperLeftClip, lowerRightClip, interiorClip };
SkPaint clipHairline;
clipHairline.setColor(SK_ColorWHITE);
clipHairline.setStyle(SkPaint::kStroke_Style);
for (size_t x = 0; x < sizeof(clipRects) / sizeof(SkRect); ++x) {
canvas->save();
canvas->drawRect(clipRects[x], clipHairline);
paint.setAlpha(0x20);
canvas->drawText(text, strlen(text), 0, 0, paint);
canvas->clipRect(clipRects[x]);
paint.setAlpha(0xFF);
canvas->drawText(text, strlen(text), 0, 0, paint);
canvas->restore();
canvas->translate(0, bounds.height() + SkIntToScalar(25));
}
}
