dl_builder.cc

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include "impeller/toolkit/interop/dl_builder.h"
 
#include "impeller/toolkit/interop/formats.h"
 
namespace impeller::interop {
 
DisplayListBuilder::DisplayListBuilder(const ImpellerRect* rect)
    : builder_(ToSkiaType(rect).value_or(
          flutter::DisplayListBuilder::kMaxCullRect)) {}
 
DisplayListBuilder::~DisplayListBuilder() = default;
 
void DisplayListBuilder::Save() {
  builder_.Save();
}
 
void DisplayListBuilder::SaveLayer(const Rect& bounds,
                                   const Paint* paint,
                                   const ImageFilter* backdrop) {
  const auto sk_bounds = ToSkiaType(bounds);
  builder_.SaveLayer(
      &sk_bounds,                                       //
      paint == nullptr ? nullptr : &paint->GetPaint(),  //
      backdrop == nullptr ? nullptr : backdrop->GetImageFilter().get());
}
 
void DisplayListBuilder::Restore() {
  builder_.Restore();
}
 
void DisplayListBuilder::Scale(Size scale) {
  builder_.Scale(scale.width, scale.height);
}
 
void DisplayListBuilder::Rotate(Degrees angle) {
  builder_.Rotate(angle.degrees);
}
 
void DisplayListBuilder::Translate(Point translation) {
  builder_.Translate(translation.x, translation.y);
}
 
Matrix DisplayListBuilder::GetTransform() const {
  Matrix matrix;
  builder_.GetTransformFullPerspective().getColMajor(matrix.m);
  return matrix;
}
 
void DisplayListBuilder::SetTransform(const Matrix& matrix) {
  const auto sk_matrix = SkM44::ColMajor(matrix.m);
  builder_.SetTransform(&sk_matrix);
}
 
void DisplayListBuilder::ResetTransform() {
  builder_.TransformReset();
}
 
uint32_t DisplayListBuilder::GetSaveCount() const {
  return builder_.GetSaveCount();
}
 
void DisplayListBuilder::RestoreToCount(uint32_t count) {
  builder_.RestoreToCount(count);
}
 
void DisplayListBuilder::ClipRect(const Rect& rect,
                                  flutter::DlCanvas::ClipOp op) {
  builder_.ClipRect(ToSkiaType(rect), op);
}
 
void DisplayListBuilder::ClipOval(const Rect& rect,
                                  flutter::DlCanvas::ClipOp op) {
  builder_.ClipOval(ToSkiaType(rect), op);
}
 
void DisplayListBuilder::ClipRoundedRect(
    const Rect& rect,
    const impeller::PathBuilder::RoundingRadii& radii,
    flutter::DlCanvas::ClipOp op) {
  builder_.ClipRRect(ToSkiaType(rect, radii), op);
}
 
void DisplayListBuilder::ClipPath(const Path& path,
                                  flutter::DlCanvas::ClipOp op) {
  builder_.ClipPath(path.GetPath(), op);
}
 
void DisplayListBuilder::DrawRect(const Rect& rect, const Paint& paint) {
  builder_.DrawRect(ToSkiaType(rect), paint.GetPaint());
}
 
void DisplayListBuilder::DrawOval(const Rect& oval_bounds, const Paint& paint) {
  builder_.DrawOval(ToSkiaType(oval_bounds), paint.GetPaint());
}
 
void DisplayListBuilder::DrawRoundedRect(
    const Rect& rect,
    const impeller::PathBuilder::RoundingRadii& radii,
    const Paint& paint) {
  builder_.DrawRRect(ToSkiaType(rect, radii), paint.GetPaint());
}
 
void DisplayListBuilder::DrawRoundedRectDifference(
    const Rect& outer_rect,
    const impeller::PathBuilder::RoundingRadii& outer_radii,
    const Rect& inner_rect,
    const impeller::PathBuilder::RoundingRadii& inner_radii,
    const Paint& paint) {
  builder_.DrawDRRect(ToSkiaType(outer_rect, outer_radii),  //
                      ToSkiaType(inner_rect, inner_radii),  //
                      paint.GetPaint()                      //
  );
}
 
void DisplayListBuilder::DrawPath(const Path& path, const Paint& paint) {
  builder_.DrawPath(path.GetPath(), paint.GetPaint());
}
 
void DisplayListBuilder::DrawPaint(const Paint& paint) {
  builder_.DrawPaint(paint.GetPaint());
}
 
void DisplayListBuilder::DrawLine(const Point& from,
                                  const Point& to,
                                  const Paint& paint) {
  builder_.DrawLine(ToSkiaType(from), ToSkiaType(to), paint.GetPaint());
}
 
void DisplayListBuilder::DrawDashedLine(const Point& from,
                                        const Point& to,
                                        Scalar on_length,
                                        Scalar off_length,
                                        const Paint& paint) {
  builder_.DrawDashedLine(from,             //
                          to,               //
                          on_length,        //
                          off_length,       //
                          paint.GetPaint()  //
  );
}
 
ScopedObject<DisplayList> DisplayListBuilder::Build() {
  return Create<DisplayList>(builder_.Build());
}
 
void DisplayListBuilder::DrawDisplayList(const DisplayList& dl,
                                         Scalar opacity) {
  builder_.DrawDisplayList(dl.GetDisplayList(), opacity);
}
 
void DisplayListBuilder::DrawTexture(const Texture& texture,
                                     const Point& point,
                                     flutter::DlImageSampling sampling,
                                     const Paint* paint) {
  builder_.DrawImage(texture.MakeImage(),                             //
                     ToSkiaType(point),                               //
                     sampling,                                        //
                     paint == nullptr ? nullptr : &paint->GetPaint()  //
  );
}
 
void DisplayListBuilder::DrawTextureRect(const Texture& texture,
                                         const Rect& src_rect,
                                         const Rect& dst_rect,
                                         flutter::DlImageSampling sampling,
                                         const Paint* paint) {
  builder_.DrawImageRect(texture.MakeImage(),                             //
                         ToSkiaType(src_rect),                            //
                         ToSkiaType(dst_rect),                            //
                         sampling,                                        //
                         paint == nullptr ? nullptr : &paint->GetPaint()  //
  );
}
 
void DisplayListBuilder::DrawParagraph(const Paragraph& paragraph,
                                       Point point) {
  const auto& handle = paragraph.GetHandle();
  if (!handle) {
    return;
  }
  handle->Paint(&builder_, point.x, point.y);
}
 
}  // namespace impeller::interop