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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "COLRFonts.h"
#include "gfxFontUtils.h"
#include "harfbuzz/hb.h"
#include "MockDrawTarget.h"
#include "MockScaledFont.h"
#include "FuzzingInterface.h"
#include "mozilla/Preferences.h"
using namespace mozilla;
using namespace mozilla::gfx;
static int FuzzingRunCOLRv1(const uint8_t* data, size_t size) {
gfxFontUtils::AutoHBBlob hb_data_blob(hb_blob_create(
(const char*)data, size, HB_MEMORY_MODE_READONLY, nullptr, nullptr));
hb_face_t* hb_data_face = hb_face_create(hb_data_blob, 0);
if (!hb_data_face) {
return 0;
}
gfxFontUtils::AutoHBBlob colr(
hb_face_reference_table(hb_data_face, TRUETYPE_TAG('C', 'O', 'L', 'R')));
gfxFontUtils::AutoHBBlob cpal(
hb_face_reference_table(hb_data_face, TRUETYPE_TAG('C', 'P', 'A', 'L')));
if (!colr || !cpal || !COLRFonts::ValidateColorGlyphs(colr, cpal)) {
hb_face_destroy(hb_data_face);
return 0;
}
const float kPixelSize = 16.0f;
unsigned glyph_count = hb_face_get_glyph_count(hb_data_face);
hb_font_t* hb_data_font = hb_font_create(hb_data_face);
uint32_t scale = NS_round(kPixelSize * 65536.0); // size as 16.16 fixed-point
hb_font_set_scale(hb_data_font, scale, scale);
RefPtr dt = new MockDrawTarget();
RefPtr uf = new MockUnscaledFont();
RefPtr sf = new MockScaledFont(uf, hb_data_font);
Float f2p = kPixelSize / hb_face_get_upem(hb_data_face);
UniquePtr<nsTArray<sRGBColor>> colorPalette =
COLRFonts::SetupColorPalette(hb_data_face, nullptr, nullptr, "dummy"_ns);
for (unsigned i = 0; i <= glyph_count; ++i) {
if (COLRFonts::GetColrTableVersion(colr) == 1) {
Rect bounds =
COLRFonts::GetColorGlyphBounds(colr, hb_data_font, i, dt, sf, f2p);
const auto* paintGraph = COLRFonts::GetGlyphPaintGraph(colr, i);
if (paintGraph) {
dt->PushClipRect(bounds);
COLRFonts::PaintGlyphGraph(colr, hb_data_font, paintGraph, dt, nullptr,
sf, DrawOptions(), Point(), sRGBColor(),
colorPalette.get(), i, f2p);
dt->PopClip();
}
}
const auto* layers = COLRFonts::GetGlyphLayers(colr, i);
if (layers) {
COLRFonts::PaintGlyphLayers(colr, hb_data_face, layers, dt, nullptr, sf,
DrawOptions(), Point(), sRGBColor(),
colorPalette.get());
}
}
hb_font_destroy(hb_data_font);
hb_face_destroy(hb_data_face);
return 0;
}
int FuzzingInitCOLRv1(int* argc, char*** argv) {
Preferences::SetBool("gfx.font_rendering.colr_v1.enabled", true);
return 0;
}
MOZ_FUZZING_INTERFACE_RAW(FuzzingInitCOLRv1, FuzzingRunCOLRv1, GfxCOLRv1);
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