Move core pieces of browser\renderer_host to src\content.

chrome/browser/renderer_host/backing_store_win.cc

-// Copyright (c) 2010 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 "chrome/browser/renderer_host/backing_store_win.h"
-
-#include "app/surface/transport_dib.h"
-#include "base/command_line.h"
-#include "chrome/browser/renderer_host/render_process_host.h"
-#include "chrome/browser/renderer_host/render_widget_host.h"
-#include "chrome/common/chrome_switches.h"
-#include "skia/ext/platform_canvas.h"
-#include "ui/gfx/gdi_util.h"
-
-namespace {
-
-// Creates a dib conforming to the height/width/section parameters passed in.
-HANDLE CreateDIB(HDC dc, int width, int height, int color_depth) {
-  BITMAPV5HEADER hdr = {0};
-  ZeroMemory(&hdr, sizeof(BITMAPV5HEADER));
-
-  // These values are shared with gfx::PlatformDevice
-  hdr.bV5Size = sizeof(BITMAPINFOHEADER);
-  hdr.bV5Width = width;
-  hdr.bV5Height = -height;  // minus means top-down bitmap
-  hdr.bV5Planes = 1;
-  hdr.bV5BitCount = color_depth;
-  hdr.bV5Compression = BI_RGB;  // no compression
-  hdr.bV5SizeImage = 0;
-  hdr.bV5XPelsPerMeter = 1;
-  hdr.bV5YPelsPerMeter = 1;
-  hdr.bV5ClrUsed = 0;
-  hdr.bV5ClrImportant = 0;
-
-  if (BackingStoreWin::ColorManagementEnabled()) {
-    hdr.bV5CSType = LCS_sRGB;
-    hdr.bV5Intent = LCS_GM_IMAGES;
-  }
-
-  void* data = NULL;
-  HANDLE dib = CreateDIBSection(dc, reinterpret_cast<BITMAPINFO*>(&hdr),
-                                0, &data, NULL, 0);
-  DCHECK(data);
-  return dib;
-}
-
-void CallStretchDIBits(HDC hdc, int dest_x, int dest_y, int dest_w, int dest_h,
-                       int src_x, int src_y, int src_w, int src_h, void* pixels,
-                       const BITMAPINFO* bitmap_info) {
-  // When blitting a rectangle that touches the bottom, left corner of the
-  // bitmap, StretchDIBits looks at it top-down!  For more details, see
-  // http://wiki.allegro.cc/index.php?title=StretchDIBits.
-  int rv;
-  int bitmap_h = -bitmap_info->bmiHeader.biHeight;
-  int bottom_up_src_y = bitmap_h - src_y - src_h;
-  if (bottom_up_src_y == 0 && src_x == 0 && src_h != bitmap_h) {
-    rv = StretchDIBits(hdc,
-                       dest_x, dest_h + dest_y - 1, dest_w, -dest_h,
-                       src_x, bitmap_h - src_y + 1, src_w, -src_h,
-                       pixels, bitmap_info, DIB_RGB_COLORS, SRCCOPY);
-  } else {
-    rv = StretchDIBits(hdc,
-                       dest_x, dest_y, dest_w, dest_h,
-                       src_x, bottom_up_src_y, src_w, src_h,
-                       pixels, bitmap_info, DIB_RGB_COLORS, SRCCOPY);
-  }
-  DCHECK(rv != GDI_ERROR);
-}
-
-}  // namespace
-
-BackingStoreWin::BackingStoreWin(RenderWidgetHost* widget, const gfx::Size& size)
-    : BackingStore(widget, size),
-      backing_store_dib_(NULL),
-      original_bitmap_(NULL) {
-  HDC screen_dc = ::GetDC(NULL);
-  color_depth_ = ::GetDeviceCaps(screen_dc, BITSPIXEL);
-  // Color depths less than 16 bpp require a palette to be specified. Instead,
-  // we specify the desired color depth as 16 which lets the OS to come up
-  // with an approximation.
-  if (color_depth_ < 16)
-    color_depth_ = 16;
-  hdc_ = CreateCompatibleDC(screen_dc);
-  ReleaseDC(NULL, screen_dc);
-}
-
-BackingStoreWin::~BackingStoreWin() {
-  DCHECK(hdc_);
-  if (original_bitmap_) {
-    SelectObject(hdc_, original_bitmap_);
-  }
-  if (backing_store_dib_) {
-    DeleteObject(backing_store_dib_);
-    backing_store_dib_ = NULL;
-  }
-  DeleteDC(hdc_);
-}
-
-// static
-bool BackingStoreWin::ColorManagementEnabled() {
-  static bool enabled = false;
-  static bool checked = false;
-  if (!checked) {
-    checked = true;
-    const CommandLine& command = *CommandLine::ForCurrentProcess();
-    enabled = command.HasSwitch(switches::kEnableMonitorProfile);
-  }
-  return enabled;
-}
-
-size_t BackingStoreWin::MemorySize() {
-  return size().GetArea() * (color_depth_ / 8);
-}
-
-void BackingStoreWin::PaintToBackingStore(
-    RenderProcessHost* process,
-    TransportDIB::Id bitmap,
-    const gfx::Rect& bitmap_rect,
-    const std::vector<gfx::Rect>& copy_rects) {
-  if (!backing_store_dib_) {
-    backing_store_dib_ = CreateDIB(hdc_, size().width(),
-                                   size().height(), color_depth_);
-    if (!backing_store_dib_) {
-      NOTREACHED();
-      return;
-    }
-    original_bitmap_ = SelectObject(hdc_, backing_store_dib_);
-  }
-
-  TransportDIB* dib = process->GetTransportDIB(bitmap);
-  if (!dib)
-    return;
-
-  BITMAPINFOHEADER hdr;
-  gfx::CreateBitmapHeader(bitmap_rect.width(), bitmap_rect.height(), &hdr);
-  // Account for a bitmap_rect that exceeds the bounds of our view
-  gfx::Rect view_rect(size());
-
-  for (size_t i = 0; i < copy_rects.size(); i++) {
-    gfx::Rect paint_rect = view_rect.Intersect(copy_rects[i]);
-    CallStretchDIBits(hdc_,
-                      paint_rect.x(),
-                      paint_rect.y(),
-                      paint_rect.width(),
-                      paint_rect.height(),
-                      paint_rect.x() - bitmap_rect.x(),
-                      paint_rect.y() - bitmap_rect.y(),
-                      paint_rect.width(),
-                      paint_rect.height(),
-                      dib->memory(),
-                      reinterpret_cast<BITMAPINFO*>(&hdr));
-  }
-}
-
-bool BackingStoreWin::CopyFromBackingStore(const gfx::Rect& rect,
-                                           skia::PlatformCanvas* output) {
-  if (!output->initialize(rect.width(), rect.height(), true))
-    return false;
-
-  HDC temp_dc = output->beginPlatformPaint();
-  BitBlt(temp_dc, 0, 0, rect.width(), rect.height(),
-         hdc(), rect.x(), rect.y(), SRCCOPY);
-  output->endPlatformPaint();
-  return true;
-}
-
-void BackingStoreWin::ScrollBackingStore(int dx, int dy,
-                                         const gfx::Rect& clip_rect,
-                                         const gfx::Size& view_size) {
-  RECT damaged_rect, r = clip_rect.ToRECT();
-  ScrollDC(hdc_, dx, dy, NULL, &r, NULL, &damaged_rect);
-
-  // TODO(darin): this doesn't work if dx and dy are both non-zero!
-  DCHECK(dx == 0 || dy == 0);
-}