83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebRenderTextLayer.h"
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#include "mozilla/layers/WebRenderTypes.h"
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#include "mozilla/layers/WebRenderBridgeChild.h"
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#include "mozilla/gfx/2D.h"
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namespace mozilla {
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namespace layers {
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using namespace mozilla::gfx;
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static void
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DWriteFontFileData(const uint8_t* aData, uint32_t aLength, uint32_t aIndex,
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float aGlyphSize, uint32_t aVariationCount,
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const ScaledFont::VariationSetting* aVariations, void* aBaton)
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{
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WebRenderTextLayer* layer = static_cast<WebRenderTextLayer*>(aBaton);
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uint8_t* fontData = (uint8_t*)malloc(aLength * sizeof(uint8_t));
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memcpy(fontData, aData, aLength * sizeof(uint8_t));
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layer->mFontData = fontData;
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layer->mFontDataLength = aLength;
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layer->mIndex = aIndex;
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layer->mGlyphSize = aGlyphSize;
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}
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void
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WebRenderTextLayer::RenderLayer()
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{
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if (mBounds.IsEmpty()) {
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return;
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}
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gfx::Rect rect = RelativeToParent(GetTransform().TransformBounds(IntRectToRect(mBounds)));
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gfx::Rect clip;
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if (GetClipRect().isSome()) {
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clip = RelativeToParent(IntRectToRect(GetClipRect().ref().ToUnknownRect()));
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} else {
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clip = rect;
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}
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MOZ_ASSERT(mFont->GetType() == FontType::DWRITE);
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mFont->GetFontFileData(&DWriteFontFileData, this);
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gfx::ByteBuffer fontBuffer(mFontDataLength, mFontData);
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nsTArray<WRGlyphArray> wr_glyphs;
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wr_glyphs.SetLength(mGlyphs.Length());
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for (size_t i = 0; i < mGlyphs.Length(); i++) {
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GlyphArray glyph_array = mGlyphs[i];
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nsTArray<Glyph>& glyphs = glyph_array.glyphs();
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nsTArray<WRGlyphInstance>& wr_glyph_instances = wr_glyphs[i].glyphs;
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wr_glyph_instances.SetLength(glyphs.Length());
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wr_glyphs[i].color = ToWRColor(glyph_array.color().value());
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for (size_t j = 0; j < glyphs.Length(); j++) {
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wr_glyph_instances[j].index = glyphs[j].mIndex;
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wr_glyph_instances[j].x = glyphs[j].mPosition.x;
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wr_glyph_instances[j].y = glyphs[j].mPosition.y;
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}
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}
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WRBridge()->AddWebRenderCommand(OpDPPushText(
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ToWRRect(rect),
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ToWRRect(clip),
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wr_glyphs,
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mIndex,
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mGlyphSize,
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fontBuffer,
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mFontDataLength
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));
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}
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} // namespace layers
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} // namespace mozilla
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