use pos text

core/fxge/skia/fx_skia_device.cpp

 // Copyright 2014 PDFium 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 "core/fxge/include/fx_ge.h"
 
 #if defined(_SKIA_SUPPORT_)
 #include "core/fxcodec/include/fx_codec.h"
 
 #include "core/fpdfapi/fpdf_page/cpdf_shadingpattern.h"
@@ skipping 587 matching lines @@
   SkPaint paint;
   paint.setAntiAlias(true);
   paint.setColor(color);
   paint.setTypeface(typeface);
   paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
   paint.setTextSize(font_size);
   paint.setSubpixelText(true);
   m_pCanvas->save();
   SkMatrix skMatrix = ToFlippedSkMatrix(*pObject2Device);
   m_pCanvas->concat(skMatrix);
+  SkTDArray<SkPoint> positions;
+  positions.setCount(nChars);
+  SkTDArray<uint16_t> glyphs;
+  glyphs.setCount(nChars);
   for (int index = 0; index < nChars; ++index) {
     const FXTEXT_CHARPOS& cp = pCharPos[index];
-    uint16_t glyph = (uint16_t)cp.m_GlyphIndex;
-    m_pCanvas->drawText(&glyph, 2, cp.m_OriginX, cp.m_OriginY, paint);
+    positions[index] = {cp.m_OriginX, cp.m_OriginY};
+    glyphs[index] = (uint16_t)cp.m_GlyphIndex;
   }
+  m_pCanvas->drawPosText(glyphs.begin(), nChars * 2, positions.begin(), paint);
   m_pCanvas->restore();
   return TRUE;
 }
 
 int CFX_SkiaDeviceDriver::GetDeviceCaps(int caps_id) {
   switch (caps_id) {
     case FXDC_DEVICE_CLASS:
       return FXDC_DISPLAY;
     case FXDC_PIXEL_WIDTH:
       return m_pCanvas->imageInfo().width();
@@ skipping 550 matching lines @@
 CFX_FxgeDevice::~CFX_FxgeDevice() {
   if (m_bOwnedBitmap && GetBitmap())
     delete GetBitmap();
 }
 
 void CFX_FxgeDevice::PreMultiply() {
   (static_cast<CFX_SkiaDeviceDriver*>(this->GetDeviceDriver()))->PreMultiply();
 }
 
 #endif