generated from napi-rs/package-template
/
skia_c.cpp
1722 lines (1527 loc) · 52.1 KB
/
skia_c.cpp
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#include <assert.h>
#include <math.h>
#include "skia_c.hpp"
#define SURFACE_CAST reinterpret_cast<SkSurface *>(c_surface)
#define CANVAS_CAST reinterpret_cast<SkCanvas *>(c_canvas)
#define PAINT_CAST reinterpret_cast<SkPaint *>(c_paint)
#define BITMAP_CAST reinterpret_cast<SkBitmap *>(c_bitmap)
#define PATH_CAST reinterpret_cast<SkPath *>(c_path)
#define MATRIX_CAST reinterpret_cast<SkMatrix *>(c_matrix)
#define MASK_FILTER_CAST reinterpret_cast<SkMaskFilter *>(c_mask_filter)
#define IMAGE_FILTER_CAST reinterpret_cast<SkImageFilter *>(c_image_filter)
#define TYPEFACE_CAST reinterpret_cast<SkTypeface *>(c_typeface)
#define COLOR_SPACE_CAST cs == 0 ? SkColorSpace::MakeSRGB() : SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB, SkNamedGamut::kDisplayP3)
#define MAX_LAYOUT_WIDTH 100000
#define HANGING_AS_PERCENT_OF_ASCENT 80
extern "C"
{
void SkStrSplit(const char* str,
const char* delimiters,
skia_private::TArray<SkString>* out) {
// Skip any delimiters.
str += strspn(str, delimiters);
if (!*str) {
return;
}
while (true) {
// Find a token.
const size_t len = strcspn(str, delimiters);
if (len > 0) {
out->push_back().set(str, len);
str += len;
}
if (!*str) {
return;
}
// Skip any delimiters.
str += strspn(str, delimiters);
}
}
static SkSamplingOptions SamplingOptionsFromFQ(int fq)
{
switch (fq)
{
case 3:
return SkSamplingOptions(SkCubicResampler{1 / 3.0f, 1 / 3.0f});
case 2:
return SkSamplingOptions(SkFilterMode::kLinear,
SkMipmapMode::kNearest);
case 1:
return SkSamplingOptions(SkFilterMode::kLinear, SkMipmapMode::kNone);
case 0:
break;
}
return SkSamplingOptions(SkFilterMode::kNearest, SkMipmapMode::kNone);
}
static SkMatrix conv_from_transform(const skiac_transform &c_ts)
{
return SkMatrix::MakeAll(c_ts.a, c_ts.c, c_ts.e,
c_ts.b, c_ts.d, c_ts.f,
0, 0, 1);
}
static skiac_transform conv_to_transform(const SkMatrix &matrix)
{
return skiac_transform{
matrix.getScaleX(),
matrix.getSkewY(), // Yes, inverted.
matrix.getSkewX(), // Skia uses such order for some reasons.
matrix.getScaleY(),
matrix.getTranslateX(),
matrix.getTranslateY(),
};
}
void skiac_clear_all_cache()
{
SkGraphics::PurgeAllCaches();
}
// Surface
static SkSurface *skiac_surface_create(int width, int height, SkAlphaType alphaType, uint8_t cs)
{
// Init() is idempotent, so can be called more than once with no adverse effect.
SkGraphics::Init();
auto color_space = COLOR_SPACE_CAST;
auto info = SkImageInfo::Make(width, height, kRGBA_8888_SkColorType, alphaType, color_space);
auto surface = SkSurfaces::Raster(info);
if (surface)
{
// The surface ref count will equal one after the pointer is returned.
return surface.release();
}
else
{
return nullptr;
}
}
void skiac_surface_create_svg(skiac_svg_surface *c_surface, int w, int h, int alphaType, uint32_t flag, uint8_t cs)
{
auto w_stream = new SkDynamicMemoryWStream();
auto canvas = SkSVGCanvas::Make(SkRect::MakeWH(w, h), w_stream, flag);
if (!canvas.get())
{
return;
}
auto surface = skiac_surface_create(w, h, (SkAlphaType)alphaType, cs);
if (!surface)
{
return;
}
c_surface->stream = reinterpret_cast<skiac_w_memory_stream *>(w_stream);
c_surface->surface = reinterpret_cast<skiac_surface *>(surface);
c_surface->canvas = reinterpret_cast<skiac_canvas *>(canvas.release());
}
skiac_surface *skiac_surface_create_rgba_premultiplied(int width, int height, uint8_t cs)
{
return reinterpret_cast<skiac_surface *>(
skiac_surface_create(width, height, kPremul_SkAlphaType, cs));
}
skiac_surface *skiac_surface_create_rgba(int width, int height, uint8_t cs)
{
return reinterpret_cast<skiac_surface *>(
skiac_surface_create(width, height, kUnpremul_SkAlphaType, cs));
}
bool skiac_surface_save(skiac_surface *c_surface, const char *path)
{
auto image = SURFACE_CAST->makeImageSnapshot();
auto data = SkPngEncoder::Encode(nullptr, image.release(), SkPngEncoder::Options());
if (data)
{
SkFILEWStream stream(path);
if (stream.write(data->data(), data->size()))
{
stream.flush();
return true;
}
}
return false;
}
void skiac_surface_destroy(skiac_surface *c_surface)
{
// SkSurface is ref counted.
SURFACE_CAST->unref();
}
skiac_surface *skiac_surface_copy_rgba(
skiac_surface *c_surface,
uint32_t x, uint32_t y, uint32_t width, uint32_t height, uint8_t cs)
{
// x, y, width, height are source rectangle coordinates.
auto copy = skiac_surface_create((int)width, (int)height, kUnpremul_SkAlphaType, cs);
if (!copy)
{
return nullptr;
}
SkPaint paint;
paint.setAlpha(SK_AlphaOPAQUE);
const auto sampling = SkSamplingOptions(SkCubicResampler::Mitchell());
// The original surface draws itself to the copy's canvas.
SURFACE_CAST->draw(copy->getCanvas(), -(SkScalar)x, -(SkScalar)y, sampling, &paint);
return reinterpret_cast<skiac_surface *>(copy);
}
int skiac_surface_get_width(skiac_surface *c_surface)
{
return SURFACE_CAST->width();
}
int skiac_surface_get_height(skiac_surface *c_surface)
{
return SURFACE_CAST->height();
}
skiac_canvas *skiac_surface_get_canvas(skiac_surface *c_surface)
{
return reinterpret_cast<skiac_canvas *>(SURFACE_CAST->getCanvas());
}
void skiac_surface_read_pixels(skiac_surface *c_surface, skiac_surface_data *data)
{
data->ptr = nullptr;
data->size = 0;
SkPixmap pixmap;
if (SURFACE_CAST->peekPixels(&pixmap))
{
data->ptr = static_cast<uint8_t *>(pixmap.writable_addr());
data->size = pixmap.computeByteSize();
}
}
bool skiac_surface_read_pixels_rect(skiac_surface *c_surface, uint8_t *data, int x, int y, int w, int h, uint8_t cs)
{
auto color_space = COLOR_SPACE_CAST;
auto image_info = SkImageInfo::Make(w, h, SkColorType::kRGBA_8888_SkColorType, SkAlphaType::kUnpremul_SkAlphaType, color_space);
auto result = SURFACE_CAST->readPixels(image_info, data, w * 4, x, y);
return result;
}
void skiac_surface_png_data(skiac_surface *c_surface, skiac_sk_data *data)
{
auto image = SURFACE_CAST->makeImageSnapshot().release();
auto png_data = SkPngEncoder::Encode(nullptr, image, SkPngEncoder::Options());
image->unref();
if (png_data)
{
data->ptr = png_data->bytes();
data->size = png_data->size();
data->data = reinterpret_cast<skiac_data *>(png_data.release());
}
}
void skiac_surface_encode_data(skiac_surface *c_surface, skiac_sk_data *data, int format, int quality)
{
auto image = SURFACE_CAST->makeImageSnapshot().release();
sk_sp<SkData> encoded_data;
if (format == int(SkEncodedImageFormat::kJPEG)) {
SkJpegEncoder::Options options;
options.fQuality = quality;
encoded_data = SkJpegEncoder::Encode(nullptr, image, options);
} else if (format == int(SkEncodedImageFormat::kPNG)) {
encoded_data = SkPngEncoder::Encode(nullptr, image, SkPngEncoder::Options());
} else if (format == int(SkEncodedImageFormat::kWEBP)){
SkWebpEncoder::Options options;
options.fCompression = quality == 100 ? SkWebpEncoder::Compression::kLossless : SkWebpEncoder::Compression::kLossy;
options.fQuality = quality == 100 ? 75 : quality;
encoded_data = SkWebpEncoder::Encode(nullptr, image, options);
}
image->unref();
if (encoded_data)
{
data->ptr = const_cast<uint8_t *>(encoded_data->bytes());
data->size = encoded_data->size();
data->data = reinterpret_cast<skiac_data *>(encoded_data.release());
}
}
int skiac_surface_get_alpha_type(skiac_surface *c_surface)
{
return SURFACE_CAST->imageInfo().alphaType();
}
void skiac_surface_get_bitmap(skiac_surface *c_surface, skiac_bitmap_info *info)
{
auto image = SURFACE_CAST->makeImageSnapshot();
auto bitmap = new SkBitmap();
auto image_info = image->imageInfo();
bitmap->allocPixels(image_info);
image->readPixels(image_info, bitmap->getPixels(), bitmap->rowBytes(), 0, 0);
info->bitmap = reinterpret_cast<skiac_bitmap *>(bitmap);
info->width = (size_t)image_info.width();
info->height = (size_t)image_info.height();
}
// Canvas
void skiac_canvas_clear(skiac_canvas *c_canvas, uint32_t color)
{
CANVAS_CAST->clear(static_cast<SkColor>(color));
}
void skiac_canvas_set_transform(skiac_canvas *c_canvas, skiac_matrix *c_matrix)
{
CANVAS_CAST->setMatrix(*MATRIX_CAST);
}
void skiac_canvas_concat(skiac_canvas *c_canvas, skiac_matrix *c_matrix)
{
CANVAS_CAST->concat(*MATRIX_CAST);
}
void skiac_canvas_scale(skiac_canvas *c_canvas, float sx, float sy)
{
CANVAS_CAST->scale(sx, sy);
}
void skiac_canvas_translate(skiac_canvas *c_canvas, float dx, float dy)
{
CANVAS_CAST->translate(dx, dy);
}
void skiac_canvas_rotate(skiac_canvas *c_canvas, float degrees)
{
CANVAS_CAST->rotate(degrees);
}
skiac_matrix *skiac_canvas_get_total_transform_matrix(skiac_canvas *c_canvas)
{
auto martix = CANVAS_CAST->getTotalMatrix();
return reinterpret_cast<skiac_matrix *>(new SkMatrix(martix));
}
skiac_transform skiac_canvas_get_total_transform(skiac_canvas *c_canvas)
{
return conv_to_transform(CANVAS_CAST->getTotalMatrix());
}
void skiac_canvas_draw_color(skiac_canvas *c_canvas, float r, float g, float b, float a)
{
CANVAS_CAST->drawColor(SkColor4f{r, g, b, a});
}
void skiac_canvas_draw_image(
skiac_canvas *c_canvas,
skiac_bitmap *c_bitmap,
float sx,
float sy,
float s_width,
float s_height,
float dx,
float dy,
float d_width,
float d_height,
bool enable_smoothing,
int filter_quality,
skiac_paint *c_paint)
{
const auto src_rect = SkRect::MakeXYWH(sx, sy, s_width, s_height);
const auto dst_rect = SkRect::MakeXYWH(dx, dy, d_width, d_height);
auto sk_image = SkImages::RasterFromBitmap(*BITMAP_CAST);
auto fq = enable_smoothing ? filter_quality : 0;
const auto sampling = SamplingOptionsFromFQ(fq);
auto paint = reinterpret_cast<const SkPaint *>(c_paint);
CANVAS_CAST->drawImageRect(sk_image, src_rect, dst_rect, sampling, paint, SkCanvas::kFast_SrcRectConstraint);
}
void skiac_canvas_draw_path(skiac_canvas *c_canvas, skiac_path *c_path, skiac_paint *c_paint)
{
CANVAS_CAST->drawPath(*PATH_CAST, *PAINT_CAST);
}
void skiac_canvas_draw_rect(
skiac_canvas *c_canvas,
float x, float y, float w, float h,
skiac_paint *c_paint)
{
CANVAS_CAST->drawRect(SkRect::MakeXYWH(x, y, w, h), *PAINT_CAST);
}
void skiac_canvas_draw_surface(
skiac_canvas *c_canvas,
skiac_surface *c_surface,
float left,
float top,
uint8_t alpha,
int blend_mode,
int filter_quality)
{
auto image = SURFACE_CAST->makeImageSnapshot();
SkPaint paint;
paint.setAlpha(alpha);
paint.setBlendMode((SkBlendMode)blend_mode);
const auto sampling = SamplingOptionsFromFQ(filter_quality);
CANVAS_CAST->drawImage(image, left, top, sampling, &paint);
}
void skiac_canvas_draw_surface_rect(
skiac_canvas *c_canvas,
skiac_surface *c_surface,
float sx,
float sy,
float sw,
float sh,
float dx,
float dy,
float dw,
float dh,
int filter_quality)
{
auto image = SURFACE_CAST->makeImageSnapshot();
auto src = SkRect::MakeXYWH(sx, sy, sw, sh);
auto dst = SkRect::MakeXYWH(dx, dy, dw, dh);
const auto sampling = SamplingOptionsFromFQ(filter_quality);
CANVAS_CAST->drawImageRect(image, src, dst, sampling, nullptr, SkCanvas::kFast_SrcRectConstraint);
}
void skiac_canvas_get_line_metrics_or_draw_text(
const char *text,
size_t text_len,
float max_width,
float x,
float y,
float canvas_width,
skiac_font_collection *c_collection,
float font_size,
int weight,
int stretch,
int slant,
const char *font_family,
int baseline,
int align,
int direction,
float letter_spacing,
float world_spacing,
skiac_paint *c_paint,
skiac_canvas *c_canvas,
skiac_line_metrics *c_line_metrics)
{
auto font_collection = c_collection->collection;
auto font_style = SkFontStyle(weight, stretch, (SkFontStyle::Slant)slant);
auto text_direction = (TextDirection)direction;
skia_private::TArray<SkString> families;
SkStrSplit(font_family, ",", &families);
TextStyle text_style;
std::vector<SkString> families_vec;
for (auto family : families)
{
families_vec.emplace_back(family);
}
text_style.setFontFamilies(families_vec);
text_style.setFontSize(font_size);
text_style.setWordSpacing(world_spacing);
text_style.setLetterSpacing(letter_spacing);
text_style.setHeight(1);
text_style.setFontStyle(font_style);
text_style.setForegroundColor(*PAINT_CAST);
text_style.setTextBaseline(TextBaseline::kAlphabetic);
StrutStyle struct_style;
struct_style.setLeading(0);
ParagraphStyle paragraph_style;
paragraph_style.setTextStyle(text_style);
paragraph_style.setTextDirection(text_direction);
paragraph_style.setStrutStyle(struct_style);
ParagraphBuilderImpl builder(paragraph_style, font_collection, SkUnicode::Make());
builder.addText(text, text_len);
auto paragraph = static_cast<ParagraphImpl *>(builder.Build().release());
paragraph->layout(MAX_LAYOUT_WIDTH);
std::vector<LineMetrics> metrics_vec;
paragraph->getLineMetrics(metrics_vec);
auto line_metrics = metrics_vec[0];
auto run = paragraph->run(0);
auto font = run.font();
SkFontMetrics font_metrics;
font.getMetrics(&font_metrics);
SkRect bounds[text_len];
auto glyphs = run.glyphs();
auto glyphs_size = glyphs.size();
font.getBounds(glyphs.data(), text_len, &bounds[0], nullptr);
auto text_box = paragraph->getRectsForRange(0, text_len, RectHeightStyle::kTight, RectWidthStyle::kTight);
// line_metrics.fWidth doesn't contain the suffix spaces
// run.calculateWidth will return 0 if font is rendering as fallback
auto line_width = 0.0;
auto first_char_bounds = bounds[0];
auto descent = first_char_bounds.fBottom;
auto ascent = first_char_bounds.fTop;
auto last_char_bounds = bounds[glyphs_size - 1];
auto last_char_pos_x = run.positionX(glyphs_size - 1);
for (auto &box : text_box)
{
line_width += box.rect.width();
}
for (size_t i = 1; i <= glyphs_size - 1; ++i)
{
auto char_bounds = bounds[i];
auto char_bottom = char_bounds.fBottom;
if (char_bottom > descent)
{
descent = char_bottom;
}
auto char_top = char_bounds.fTop;
if (char_top < ascent)
{
ascent = char_top;
}
}
auto alphabetic_baseline = paragraph->getAlphabeticBaseline();
auto css_baseline = (CssBaseline)baseline;
SkScalar baseline_offset = 0;
switch (css_baseline)
{
case CssBaseline::Top:
baseline_offset = -alphabetic_baseline - font_metrics.fAscent - font_metrics.fUnderlinePosition - font_metrics.fUnderlineThickness;
break;
case CssBaseline::Hanging:
// https://github.com/chromium/chromium/blob/104.0.5092.1/third_party/blink/renderer/core/html/canvas/text_metrics.cc#L21-L25
// According to
// http://wiki.apache.org/xmlgraphics-fop/LineLayout/AlignmentHandling
// "FOP (Formatting Objects Processor) puts the hanging baseline at 80% of
// the ascender height"
baseline_offset = -alphabetic_baseline - font_metrics.fAscent * HANGING_AS_PERCENT_OF_ASCENT / 100.0;
break;
case CssBaseline::Middle:
baseline_offset = -paragraph->getHeight() / 2;
break;
case CssBaseline::Alphabetic:
baseline_offset = -alphabetic_baseline;
break;
case CssBaseline::Ideographic:
baseline_offset = -paragraph->getIdeographicBaseline();
break;
case CssBaseline::Bottom:
baseline_offset = -alphabetic_baseline + font_metrics.fStrikeoutPosition + font_metrics.fStrikeoutThickness;
break;
};
auto line_center = line_width / 2.0f;
float paint_x;
float offset_x = 0.0;
switch ((TextAlign)align)
{
case TextAlign::kLeft:
paint_x = x;
break;
case TextAlign::kCenter:
paint_x = x - line_center;
offset_x = line_center;
break;
case TextAlign::kRight:
paint_x = x - line_width;
offset_x = line_width;
break;
// Unreachable
case TextAlign::kJustify:
paint_x = x;
break;
case TextAlign::kStart:
if (text_direction == TextDirection::kLtr)
{
paint_x = x;
}
else
{
paint_x = x - line_width;
offset_x = line_width;
}
break;
case TextAlign::kEnd:
if (text_direction == TextDirection::kRtl)
{
paint_x = x;
}
else
{
paint_x = x - line_width;
offset_x = line_width;
}
break;
};
if (c_canvas)
{
auto need_scale = line_width > max_width;
float ratio = need_scale ? max_width / line_width : 1.0;
if (need_scale)
{
CANVAS_CAST->save();
CANVAS_CAST->scale(ratio, 1.0);
}
auto paint_y = y + baseline_offset;
paint_x = paint_x - letter_spacing / 2;
paragraph->paint(CANVAS_CAST, need_scale ? (paint_x + (1 - ratio) * offset_x) / ratio : paint_x, paint_y);
if (need_scale)
{
CANVAS_CAST->restore();
}
}
else
{
auto offset = -baseline_offset - alphabetic_baseline;
c_line_metrics->ascent = -ascent + offset;
c_line_metrics->descent = descent - offset;
c_line_metrics->left = -paint_x + line_metrics.fLeft - first_char_bounds.fLeft;
c_line_metrics->right = paint_x + last_char_pos_x + last_char_bounds.fRight;
c_line_metrics->width = line_width;
c_line_metrics->font_ascent = -font_metrics.fAscent + offset;
c_line_metrics->font_descent = font_metrics.fDescent - offset;
c_line_metrics->alphabetic_baseline = -font_metrics.fAscent + offset;
}
delete paragraph;
}
void skiac_canvas_reset_transform(skiac_canvas *c_canvas)
{
CANVAS_CAST->resetMatrix();
}
void skiac_canvas_clip_rect(skiac_canvas *c_canvas, float x, float y, float w, float h)
{
auto rect = SkRect::MakeXYWH(x, y, w, h);
CANVAS_CAST->clipRect(rect, true);
}
void skiac_canvas_clip_path(skiac_canvas *c_canvas, skiac_path *c_path)
{
auto path = reinterpret_cast<SkPath *>(c_path);
CANVAS_CAST->clipPath(*path, true);
}
void skiac_canvas_save(skiac_canvas *c_canvas)
{
CANVAS_CAST->save();
}
void skiac_canvas_restore(skiac_canvas *c_canvas)
{
CANVAS_CAST->restore();
}
void skiac_canvas_reset(skiac_canvas *c_canvas)
{
CANVAS_CAST->restoreToCount(1);
}
void skiac_canvas_write_pixels(skiac_canvas *c_canvas, int width, int height, uint8_t *pixels, size_t row_bytes, int x, int y)
{
auto info = SkImageInfo::Make(width, height, SkColorType::kRGBA_8888_SkColorType, SkAlphaType::kUnpremul_SkAlphaType);
CANVAS_CAST->writePixels(info, pixels, row_bytes, x, y);
}
void skiac_canvas_write_pixels_dirty(skiac_canvas *c_canvas, int width, int height, uint8_t *pixels, size_t row_bytes, size_t length, float x, float y, float dirty_x, float dirty_y, float dirty_width, float dirty_height, uint8_t cs)
{
auto color_space = COLOR_SPACE_CAST;
auto info = SkImageInfo::Make(width, height, SkColorType::kRGBA_8888_SkColorType, SkAlphaType::kUnpremul_SkAlphaType, color_space);
auto data = SkData::MakeFromMalloc(pixels, length);
auto image = SkImages::RasterFromData(info, data, row_bytes);
auto src_rect = SkRect::MakeXYWH(dirty_x, dirty_y, dirty_width, dirty_height);
auto dst_rect = SkRect::MakeXYWH(x + dirty_x, y + dirty_y, dirty_width, dirty_height);
const auto sampling = SkSamplingOptions(SkCubicResampler::Mitchell());
CANVAS_CAST->drawImageRect(image, src_rect, dst_rect, sampling, nullptr, SkCanvas::kFast_SrcRectConstraint);
}
void skiac_canvas_draw_picture(skiac_canvas *c_canvas, skiac_picture *c_picture, skiac_matrix *c_matrix, skiac_paint *c_paint) {
auto picture = reinterpret_cast<SkPicture *>(c_picture);
CANVAS_CAST->drawPicture(picture, MATRIX_CAST, PAINT_CAST);
}
// Paint
skiac_paint *skiac_paint_create()
{
return reinterpret_cast<skiac_paint *>(new SkPaint());
}
skiac_paint *skiac_paint_clone(skiac_paint *c_paint)
{
auto cloned_paint = new SkPaint(*PAINT_CAST);
return reinterpret_cast<skiac_paint *>(cloned_paint);
}
void skiac_paint_destroy(skiac_paint *c_paint)
{
// Will unref() Shader and PathEffect.
// SkPaint is not ref counted, so explicitly delete.
delete PAINT_CAST;
}
void skiac_paint_set_color(skiac_paint *c_paint, uint8_t r, uint8_t g, uint8_t b, uint8_t a)
{
PAINT_CAST->setARGB(a, r, g, b);
}
void skiac_paint_set_alpha(skiac_paint *c_paint, uint8_t a)
{
PAINT_CAST->setAlpha(a);
}
uint8_t skiac_paint_get_alpha(skiac_paint *c_paint)
{
return PAINT_CAST->getAlpha();
}
void skiac_paint_set_anti_alias(skiac_paint *c_paint, bool aa)
{
PAINT_CAST->setAntiAlias(aa);
}
void skiac_paint_set_blend_mode(skiac_paint *c_paint, int blend_mode)
{
PAINT_CAST->setBlendMode((SkBlendMode)blend_mode);
}
int skiac_paint_get_blend_mode(skiac_paint *c_paint)
{
return (int)PAINT_CAST->getBlendMode_or(SkBlendMode::kSrcOver);
}
void skiac_paint_set_shader(skiac_paint *c_paint, skiac_shader *c_shader)
{
sk_sp<SkShader> shader(reinterpret_cast<SkShader *>(c_shader));
// setShader accepts a smart pointer which will be destructed on delete.
// Therefore we have to reference the object once more, to keep it valid in Rust.
shader->ref();
PAINT_CAST->setShader(shader);
}
void skiac_paint_set_path_effect(skiac_paint *c_paint, skiac_path_effect *c_path_effect)
{
sk_sp<SkPathEffect> pathEffect(reinterpret_cast<SkPathEffect *>(c_path_effect));
// setPathEffect accepts a smart pointer which will be destructed on delete.
// Therefore we have to reference the object once more, to keep it valid in Rust.
pathEffect->ref();
PAINT_CAST->setPathEffect(pathEffect);
}
void skiac_paint_set_mask_filter(skiac_paint *c_paint, skiac_mask_filter *c_mask_filter)
{
sk_sp<SkMaskFilter> maskFilter(reinterpret_cast<SkMaskFilter *>(c_mask_filter));
maskFilter->ref();
PAINT_CAST->setMaskFilter(maskFilter);
}
void skiac_paint_set_image_filter(skiac_paint *c_paint, skiac_image_filter *c_image_filter)
{
sk_sp<SkImageFilter> imageFilter(reinterpret_cast<SkImageFilter *>(c_image_filter));
imageFilter->ref();
PAINT_CAST->setImageFilter(imageFilter);
}
void skiac_paint_set_style(skiac_paint *c_paint, int style)
{
PAINT_CAST->setStyle((SkPaint::Style)style);
}
void skiac_paint_set_stroke_width(skiac_paint *c_paint, float width)
{
PAINT_CAST->setStrokeWidth(width);
}
float skiac_paint_get_stroke_width(skiac_paint *c_paint)
{
return PAINT_CAST->getStrokeWidth();
}
void skiac_paint_set_stroke_cap(skiac_paint *c_paint, int cap)
{
PAINT_CAST->setStrokeCap((SkPaint::Cap)cap);
}
int skiac_paint_get_stroke_cap(skiac_paint *c_paint)
{
return PAINT_CAST->getStrokeCap();
}
void skiac_paint_set_stroke_join(skiac_paint *c_paint, uint8_t join)
{
PAINT_CAST->setStrokeJoin((SkPaint::Join)join);
}
uint8_t skiac_paint_get_stroke_join(skiac_paint *c_paint)
{
return PAINT_CAST->getStrokeJoin();
}
void skiac_paint_set_stroke_miter(skiac_paint *c_paint, float miter)
{
PAINT_CAST->setStrokeMiter(miter);
}
float skiac_paint_get_stroke_miter(skiac_paint *c_paint)
{
return PAINT_CAST->getStrokeMiter();
}
// Path
skiac_path *skiac_path_create()
{
return reinterpret_cast<skiac_path *>(new SkPath());
}
skiac_path *skiac_path_from_svg(char *svg_path)
{
auto path = new SkPath();
SkParsePath::FromSVGString(svg_path, path);
return reinterpret_cast<skiac_path *>(path);
}
skiac_path *skiac_path_clone(skiac_path *c_path)
{
auto new_path = new SkPath(*PATH_CAST);
return reinterpret_cast<skiac_path *>(new_path);
}
// SkPictureRecorder
skiac_picture_recorder *skiac_picture_recorder_create() {
return reinterpret_cast<skiac_picture_recorder *>(new SkPictureRecorder());
}
void skiac_picture_recorder_begin_recording(skiac_picture_recorder *c_picture_recorder, float x, float y, float width, float height) {
auto rect = SkRect::MakeXYWH(x, y, width, height);
reinterpret_cast<SkPictureRecorder *>(c_picture_recorder)->beginRecording(rect);
}
skiac_canvas*skiac_picture_recorder_get_recording_canvas(skiac_picture_recorder *c_picture_recorder) {
auto canvas = reinterpret_cast<SkPictureRecorder *>(c_picture_recorder)->getRecordingCanvas();
return reinterpret_cast<skiac_canvas *>(canvas);
}
skiac_picture* skiac_picture_recorder_finish_recording_as_picture(skiac_picture_recorder *c_picture_recorder) {
auto picture = reinterpret_cast<SkPictureRecorder *>(c_picture_recorder)->finishRecordingAsPicture();
return reinterpret_cast<skiac_picture *>(picture.release());
}
void skiac_path_swap(skiac_path *c_path, skiac_path *other_path)
{
auto other = reinterpret_cast<SkPath *>(other_path);
PATH_CAST->swap(*other);
}
void skiac_add_path(skiac_path *c_path, skiac_path *other_path, skiac_matrix *c_matrix)
{
auto path = PATH_CAST;
path->addPath(*reinterpret_cast<SkPath *>(other_path), *MATRIX_CAST, SkPath::AddPathMode::kExtend_AddPathMode);
}
bool skiac_path_op(skiac_path *c_path_one, skiac_path *c_path_two, int op)
{
auto path_one = reinterpret_cast<SkPath *>(c_path_one);
return Op(*path_one, *reinterpret_cast<SkPath *>(c_path_two), (SkPathOp)op, path_one);
}
void skiac_path_to_svg_string(skiac_path *c_path, skiac_string *c_string)
{
auto string = SkParsePath::ToSVGString(*PATH_CAST);
auto length = string.size();
auto result_string = new SkString(length);
string.swap(*result_string);
c_string->length = length;
c_string->ptr = result_string->c_str();
c_string->sk_string = result_string;
}
bool skiac_path_simplify(skiac_path *c_path)
{
return Simplify(*PATH_CAST, PATH_CAST);
}
bool skiac_path_as_winding(skiac_path *c_path)
{
return AsWinding(*PATH_CAST, PATH_CAST);
}
bool skiac_path_stroke(skiac_path *c_path, int cap, uint8_t join, float width, float miter_limit)
{
auto path = PATH_CAST;
SkPaint p;
p.setStyle(SkPaint::kStroke_Style);
p.setStrokeCap((SkPaint::Cap)cap);
p.setStrokeJoin((SkPaint::Join)join);
p.setStrokeWidth(width);
p.setStrokeMiter(miter_limit);
const SkPath *const_path = path;
const SkPaint const_paint = p;
return skpathutils::FillPathWithPaint(*const_path, const_paint, path);
}
void skiac_path_compute_tight_bounds(skiac_path *c_path, skiac_rect *c_rect)
{
auto rect = PATH_CAST->computeTightBounds();
c_rect->left = rect.fLeft;
c_rect->top = rect.fTop;
c_rect->right = rect.fRight;
c_rect->bottom = rect.fBottom;
}
void skiac_path_get_bounds(skiac_path *c_path, skiac_rect *c_rect)
{
auto rect = PATH_CAST->getBounds();
c_rect->left = rect.fLeft;
c_rect->top = rect.fTop;
c_rect->right = rect.fRight;
c_rect->bottom = rect.fBottom;
}
bool skiac_path_trim(skiac_path *c_path, float start_t, float stop_t, bool is_complement)
{
auto mode = is_complement ? SkTrimPathEffect::Mode::kInverted : SkTrimPathEffect::Mode::kNormal;
auto pe = SkTrimPathEffect::Make(start_t, stop_t, mode);
if (!pe)
{
return false;
}
SkStrokeRec rec(SkStrokeRec::InitStyle::kHairline_InitStyle);
if (pe->filterPath(PATH_CAST, *PATH_CAST, &rec, nullptr))
{
return true;
}
return false;
}
bool skiac_path_dash(skiac_path *c_path, float on, float off, float phase)
{
float intervals[] = {on, off};
auto pe = SkDashPathEffect::Make(intervals, 2, phase);
if (!pe)
{
return false;
}
SkStrokeRec rec(SkStrokeRec::InitStyle::kHairline_InitStyle);
if (pe->filterPath(PATH_CAST, *PATH_CAST, &rec, nullptr))
{
return true;
}
return false;
}
bool skiac_path_equals(skiac_path *c_path, skiac_path *other_path)
{
return *PATH_CAST == *reinterpret_cast<SkPath *>(other_path);
}
void skiac_path_destroy(skiac_path *c_path)
{
// SkPath is NOT ref counted
delete PATH_CAST;
}
void skiac_path_set_fill_type(skiac_path *c_path, int type)
{
PATH_CAST->setFillType((SkPathFillType)type);
}
int skiac_path_get_fill_type(skiac_path *c_path)
{
return (int)PATH_CAST->getFillType();
}
void skiac_path_arc_to_tangent(skiac_path *c_path, float x1, float y1, float x2, float y2, float radius)
{
PATH_CAST->arcTo(x1, y1, x2, y2, radius);
}
void skiac_path_arc_to(skiac_path *c_path, float left, float top, float right, float bottom, float startAngle, float sweepAngle, bool forceMoveTo)
{
SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
PATH_CAST->arcTo(rect, startAngle, sweepAngle, forceMoveTo);
}
void skiac_path_move_to(skiac_path *c_path, float x, float y)
{
PATH_CAST->moveTo(x, y);
}
void skiac_path_line_to(skiac_path *c_path, float x, float y)
{
PATH_CAST->lineTo(x, y);
}
void skiac_path_cubic_to(
skiac_path *c_path,
float x1, float y1, float x2, float y2, float x3, float y3)
{
PATH_CAST->cubicTo(x1, y1, x2, y2, x3, y3);
}
void skiac_path_quad_to(skiac_path *c_path, float cpx, float cpy, float x, float y)
{
PATH_CAST->quadTo(cpx, cpy, x, y);
}
void skiac_path_close(skiac_path *c_path)
{
PATH_CAST->close();
}
void skiac_path_add_rect(skiac_path *c_path, float x, float y, float width, float height)
{
SkRect rect = SkRect::MakeXYWH(x, y, width, height);
PATH_CAST->addRect(rect);
}
void skiac_path_add_circle(skiac_path *c_path, float x, float y, float r)
{
PATH_CAST->addCircle(x, y, r);
}
skiac_path *skiac_path_transform(skiac_path *c_path, skiac_matrix *c_matrix)
{
auto new_path = new SkPath();
PATH_CAST->transform(*MATRIX_CAST, new_path, SkApplyPerspectiveClip::kYes);
return reinterpret_cast<skiac_path *>(new_path);
}