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ui/views/corewm/cursor_height_provider_win.cc

Index: ui/views/corewm/cursor_height_provider_win.cc
diff --git a/ui/views/corewm/cursor_height_provider_win.cc b/ui/views/corewm/cursor_height_provider_win.cc
deleted file mode 100644
index 0d28d3801aa8ce2d24f89339f054eaddb073de17..0000000000000000000000000000000000000000
--- a/ui/views/corewm/cursor_height_provider_win.cc
+++ /dev/null
@@ -1,146 +0,0 @@
-// Copyright 2014 The Chromium 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 "ui/views/corewm/cursor_height_provider_win.h"
-
-#include <windows.h>
-#include <algorithm>
-#include <map>
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/win/scoped_hdc.h"
-
-namespace {
-typedef scoped_ptr<uint32_t> PixelData;
-typedef std::map<HCURSOR, int> HeightStorage;
-
-const uint32_t kBitsPeruint32 = sizeof(uint32_t) * 8;
-// All bits are 1 for transparent portion of monochromatic mask.
-const uint32_t kTransparentMask = 0xffffffff;
-// This is height of default pointer arrow in Windows 7.
-const int kDefaultHeight = 20;
-// Masks are monochromatic.
-const size_t kNumberOfColors = 2;
-const size_t KHeaderAndPalette =
-      sizeof(BITMAPINFOHEADER) + kNumberOfColors * sizeof(RGBQUAD);
-
-static HeightStorage* cached_heights = NULL;
-
-// Extracts the pixel data of provided bitmap
-PixelData GetBitmapData(HBITMAP handle, const BITMAPINFO& info, HDC hdc) {
-  PixelData data;
-  // Masks are monochromatic.
-  DCHECK_EQ(info.bmiHeader.biBitCount, 1);
-  if (info.bmiHeader.biBitCount != 1)
-    return data.Pass();
-
-  // When getting pixel data palette is appended to memory pointed by
-  // BITMAPINFO passed so allocate additional memory to store additional data.
-  scoped_ptr<BITMAPINFO> header(
-      reinterpret_cast<BITMAPINFO*>(new char[KHeaderAndPalette]));
-  memcpy(header.get(), &(info.bmiHeader), sizeof(info.bmiHeader));
-
-  data.reset(new uint32_t[info.bmiHeader.biSizeImage / sizeof(uint32_t)]);
-
-  int result = GetDIBits(hdc,
-                         handle,
-                         0,
-                         info.bmiHeader.biHeight,
-                         data.get(),
-                         header.get(),
-                         DIB_RGB_COLORS);
-
-  if (result == 0)
-    data.reset();
-
-  return data.Pass();
-}
-
-// Checks if the specifed row is transparent in provided bitmap.
-bool IsRowTransparent(const PixelData& data,
-                      const uint32_t row_size,
-                      const uint32_t last_byte_mask,
-                      const uint32_t y) {
-  // Set the padding bits to 1 to make mask matching easier.
-  *(data.get() + (y + 1) * row_size - 1) |= last_byte_mask;
-  for (uint32_t i = y * row_size; i < (y + 1) * row_size; ++i) {
-    if (*(data.get() + i) != kTransparentMask)
-      return false;
-  }
-  return true;
-}
-
-// Gets the vertical offset between specified cursor's hotpoint and it's bottom.
-//
-// Gets the cursor image data and extract cursor's visible height.
-// Based on that get's what should be the vertical offset between cursor's
-// hot point and the tooltip.
-int CalculateCursorHeight(HCURSOR cursor_handle) {
-  base::win::ScopedGetDC hdc(NULL);
-
-  ICONINFO icon = {0};
-  GetIconInfo(cursor_handle, &icon);
-
-  BITMAPINFO bitmap_info = {0};
-  bitmap_info.bmiHeader.biSize = sizeof(bitmap_info.bmiHeader);
-  if (GetDIBits(hdc, icon.hbmMask, 0, 0, NULL, &bitmap_info, DIB_RGB_COLORS) ==
-      0)
-    return kDefaultHeight;
-
-  // Rows are padded to full DWORDs. OR with this mask will set them to 1
-  // to simplify matching with |transparent_mask|.
-  uint32_t last_byte_mask = 0xFFFFFFFF;
-  const unsigned char bits_to_shift = sizeof(last_byte_mask) * 8 -
-      (bitmap_info.bmiHeader.biWidth % kBitsPeruint32);
-  if (bits_to_shift != kBitsPeruint32)
-    last_byte_mask = (last_byte_mask << bits_to_shift);
-  else
-    last_byte_mask = 0;
-
-  const uint32_t row_size =
-      (bitmap_info.bmiHeader.biWidth + kBitsPeruint32 - 1) / kBitsPeruint32;
-  PixelData data(GetBitmapData(icon.hbmMask, bitmap_info, hdc));
-  if (data == NULL)
-    return kDefaultHeight;
-
-  const int cursor_height = GetSystemMetrics(SM_CYCURSOR);
-  // Crash data seems to indicate cursor_height may be bigger than the bitmap.
-  int i = std::max(0, static_cast<int>(bitmap_info.bmiHeader.biHeight) -
-                   cursor_height);
-  for (; i < bitmap_info.bmiHeader.biHeight; ++i) {
-    if (!IsRowTransparent(data, row_size, last_byte_mask, i)) {
-      i--;
-      break;
-    }
-  }
-  return bitmap_info.bmiHeader.biHeight - i - icon.yHotspot;
-}
-
-}  // namespace
-
-namespace views {
-namespace corewm {
-
-int GetCurrentCursorVisibleHeight() {
-  CURSORINFO cursor = {0};
-  cursor.cbSize = sizeof(cursor);
-  GetCursorInfo(&cursor);
-
-  if (cached_heights == NULL)
-    cached_heights = new HeightStorage;
-
-  HeightStorage::const_iterator cached_height =
-      cached_heights->find(cursor.hCursor);
-  if (cached_height != cached_heights->end())
-    return cached_height->second;
-
-  const int height = CalculateCursorHeight(cursor.hCursor);
-  (*cached_heights)[cursor.hCursor] = height;
-
-  return height;
-}
-
-}  // namespace corewm
-}  // namespace views