filters.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 "flutter/display_list/effects/dl_color_filter.h"
#include "flutter/display_list/effects/dl_image_filter.h"
#include "flutter/display_list/effects/dl_mask_filter.h"
#include "flutter/skwasm/export.h"
#include "flutter/skwasm/helpers.h"
#include "flutter/skwasm/live_objects.h"
 
SKWASM_EXPORT Skwasm::sp_wrapper<flutter::DlImageFilter>*
imageFilter_createBlur(flutter::DlScalar sigma_x,
                       flutter::DlScalar sigma_y,
                       flutter::DlTileMode tile_mode) {
  Skwasm::live_image_filter_count++;
  return new Skwasm::sp_wrapper<flutter::DlImageFilter>(
      flutter::DlImageFilter::MakeBlur(sigma_x, sigma_y, tile_mode));
}
 
SKWASM_EXPORT Skwasm::sp_wrapper<flutter::DlImageFilter>*
imageFilter_createDilate(flutter::DlScalar radius_x,
                         flutter::DlScalar radius_y) {
  Skwasm::live_image_filter_count++;
  return new Skwasm::sp_wrapper<flutter::DlImageFilter>(
      flutter::DlImageFilter::MakeDilate(radius_x, radius_y));
}
 
SKWASM_EXPORT Skwasm::sp_wrapper<flutter::DlImageFilter>*
imageFilter_createErode(flutter::DlScalar radius_x,
                        flutter::DlScalar radius_y) {
  Skwasm::live_image_filter_count++;
  return new Skwasm::sp_wrapper<flutter::DlImageFilter>(
      flutter::DlImageFilter::MakeErode(radius_x, radius_y));
}
 
SKWASM_EXPORT Skwasm::sp_wrapper<flutter::DlImageFilter>*
imageFilter_createMatrix(flutter::DlScalar* matrix_33,
                         Skwasm::FilterQuality quality) {
  Skwasm::live_image_filter_count++;
  return new Skwasm::sp_wrapper<flutter::DlImageFilter>(
      flutter::DlImageFilter::MakeMatrix(
          Skwasm::CreateDlMatrixFrom3x3(matrix_33),
          Skwasm::SamplingOptionsForQuality(quality)));
}
 
SKWASM_EXPORT Skwasm::sp_wrapper<flutter::DlImageFilter>*
imageFilter_createFromColorFilter(
    Skwasm::sp_wrapper<flutter::DlColorFilter>* filter) {
  Skwasm::live_image_filter_count++;
  return new Skwasm::sp_wrapper<flutter::DlImageFilter>(
      flutter::DlImageFilter::MakeColorFilter(filter->Shared()));
}
 
SKWASM_EXPORT Skwasm::sp_wrapper<flutter::DlImageFilter>* imageFilter_compose(
    Skwasm::sp_wrapper<flutter::DlImageFilter>* outer,
    Skwasm::sp_wrapper<flutter::DlImageFilter>* inner) {
  Skwasm::live_image_filter_count++;
  return new Skwasm::sp_wrapper<flutter::DlImageFilter>(
      flutter::DlImageFilter::MakeCompose(outer->Shared(), inner->Shared()));
}
 
SKWASM_EXPORT void imageFilter_dispose(
    Skwasm::sp_wrapper<flutter::DlImageFilter>* filter) {
  Skwasm::live_image_filter_count--;
  delete filter;
}
 
SKWASM_EXPORT void imageFilter_getFilterBounds(
    Skwasm::sp_wrapper<flutter::DlImageFilter>* filter,
    flutter::DlIRect* in_out_bounds) {
  auto dl_filter = filter->Shared();
  if (dl_filter == nullptr) {
    // If there is no filter, the output bounds are the same as the input
    // bounds.
    return;
  }
  flutter::DlIRect in_rect = *in_out_bounds;
  dl_filter->map_device_bounds(in_rect, flutter::DlMatrix(), *in_out_bounds);
}
 
SKWASM_EXPORT Skwasm::sp_wrapper<const flutter::DlColorFilter>*
colorFilter_createMode(uint32_t color, flutter::DlBlendMode mode) {
  Skwasm::live_color_filter_count++;
  return new Skwasm::sp_wrapper<const flutter::DlColorFilter>(
      flutter::DlColorFilter::MakeBlend(flutter::DlColor(color), mode));
}
 
SKWASM_EXPORT Skwasm::sp_wrapper<const flutter::DlColorFilter>*
colorFilter_createMatrix(float* matrix_data  // 20 values
) {
  Skwasm::live_color_filter_count++;
  return new Skwasm::sp_wrapper<const flutter::DlColorFilter>(
      flutter::DlColorFilter::MakeMatrix(matrix_data));
}
 
SKWASM_EXPORT Skwasm::sp_wrapper<const flutter::DlColorFilter>*
colorFilter_createSRGBToLinearGamma() {
  Skwasm::live_color_filter_count++;
  return new Skwasm::sp_wrapper<const flutter::DlColorFilter>(
      flutter::DlColorFilter::MakeSrgbToLinearGamma());
}
 
SKWASM_EXPORT Skwasm::sp_wrapper<const flutter::DlColorFilter>*
colorFilter_createLinearToSRGBGamma() {
  Skwasm::live_color_filter_count++;
  return new Skwasm::sp_wrapper<const flutter::DlColorFilter>(
      flutter::DlColorFilter::MakeLinearToSrgbGamma());
}
 
SKWASM_EXPORT void colorFilter_dispose(
    Skwasm::sp_wrapper<const flutter::DlColorFilter>* filter) {
  Skwasm::live_color_filter_count--;
  delete filter;
}
 
SKWASM_EXPORT Skwasm::sp_wrapper<flutter::DlMaskFilter>* maskFilter_createBlur(
    flutter::DlBlurStyle blur_style,
    flutter::DlScalar sigma) {
  Skwasm::live_mask_filter_count++;
  return new Skwasm::sp_wrapper<flutter::DlMaskFilter>(
      flutter::DlBlurMaskFilter::Make(blur_style, sigma));
}
 
SKWASM_EXPORT void maskFilter_dispose(
    Skwasm::sp_wrapper<flutter::DlMaskFilter>* filter) {
  Skwasm::live_mask_filter_count--;
  delete filter;
}