fix: use drawPicture in some blending modes such as destination-in (

#755)

* wip: fix issue #695

* chore: modify render_canvas to associated function

* test: add some tests

* chore: format codes

* fix: fix clippy errors

__test__/index.spec.ts

@@ -175,3 +175,39 @@ test('stroke-and-filling-jpeg', async (t) => {
   ctx.fill()
   await snapshotImage(t, t.context, 'jpeg')
 })
+
+test('composition-destination-in', async (t) => {
+  const { ctx } = t.context
+  t.context.canvas.width = 300
+  t.context.canvas.height = 300
+  ctx.fillStyle = 'red'
+  ctx.fillRect(0, 0, 300, 300)
+  ctx.save()
+  ctx.globalCompositeOperation = 'destination-in';
+  ctx.fillStyle = 'green';
+  ctx.beginPath();
+  ctx.arc(150, 150, 100, 0, Math.PI * 2);
+  ctx.closePath();
+  ctx.fill();
+  ctx.restore()
+
+  await snapshotImage(t, t.context, 'png')
+})
+
+test('composition-source-in', async (t) => {
+  const { ctx } = t.context
+  t.context.canvas.width = 300
+  t.context.canvas.height = 300
+  ctx.fillStyle = 'red'
+  ctx.fillRect(0, 0, 300, 300)
+  ctx.save()
+  ctx.globalCompositeOperation = 'source-in';
+  ctx.fillStyle = 'green';
+  ctx.beginPath();
+  ctx.arc(150, 150, 100, 0, Math.PI * 2);
+  ctx.closePath();
+  ctx.fill();
+  ctx.restore()
+
+  await snapshotImage(t, t.context, 'png')
+})

skia-c/skia_c.cpp

@@ -94,7 +94,6 @@ extern "C"
     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.
@@ -631,6 +630,12 @@ extern "C"
     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()
@@ -784,6 +789,26 @@ extern "C"
     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);

skia-c/skia_c.hpp

@@ -70,6 +70,8 @@ typedef struct skiac_typeface skiac_typeface;
 typedef struct skiac_font_mgr skiac_font_mgr;
 typedef struct skiac_typeface_font_provider skiac_typeface_font_provider;
 typedef struct skiac_w_memory_stream skiac_w_memory_stream;
+typedef struct skiac_picture_recorder skiac_picture_recorder;
+typedef struct skiac_picture skiac_picture;
 
 #if defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__NT__)
 #define SK_FONT_FILE_PREFIX "C:/Windows/Fonts"
@@ -317,6 +319,7 @@ extern "C"
   void skiac_canvas_reset(skiac_canvas *c_canvas);
   void skiac_canvas_write_pixels(skiac_canvas *c_canvas, int width, int height, uint8_t *pixels, size_t row_bytes, int x, int 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);
+  void skiac_canvas_draw_picture(skiac_canvas *c_canvas, skiac_picture *c_picture, skiac_matrix *c_matrix, skiac_paint *c_paint);
 
   // Paint
   skiac_paint *skiac_paint_create();
@@ -495,6 +498,12 @@ extern "C"
 
   // SkSVG
   void skiac_svg_text_to_path(const uint8_t *data, size_t length, skiac_font_collection *c_collection, skiac_sk_data *output_data);
+
+  // SkPictureRecorder
+  skiac_picture_recorder *skiac_picture_recorder_create();
+  void skiac_picture_recorder_begin_recording(skiac_picture_recorder *c_picture_recorder, float x, float y, float width, float height);
+  skiac_canvas *skiac_picture_recorder_get_recording_canvas(skiac_picture_recorder *c_picture_recorder);
+  skiac_picture *skiac_picture_recorder_finish_recording_as_picture(skiac_picture_recorder *c_picture_recorder);
 }
 
 #endif // SKIA_CAPI_H