Enable high dpi in win/views.

ui/views/win/hwnd_message_handler.cc

 // Copyright (c) 2012 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/win/hwnd_message_handler.h"
 
 #include <dwmapi.h>
 #include <shellapi.h>
 
 #include "base/bind.h"
@@ skipping 504 matching lines @@
   if (show_state) {
     if (wp.showCmd == SW_SHOWMAXIMIZED)
       *show_state = ui::SHOW_STATE_MAXIMIZED;
     else if (wp.showCmd == SW_SHOWMINIMIZED)
       *show_state = ui::SHOW_STATE_MINIMIZED;
     else
       *show_state = ui::SHOW_STATE_NORMAL;
   }
 }
 
-void HWNDMessageHandler::SetBounds(const gfx::Rect& bounds) {
+void HWNDMessageHandler::SetBounds(const gfx::Rect& bounds_in_pixels) {
   LONG style = GetWindowLong(hwnd(), GWL_STYLE);
   if (style & WS_MAXIMIZE)
     SetWindowLong(hwnd(), GWL_STYLE, style & ~WS_MAXIMIZE);
-  SetWindowPos(hwnd(), NULL, bounds.x(), bounds.y(), bounds.width(),
-               bounds.height(), SWP_NOACTIVATE | SWP_NOZORDER);
+  SetWindowPos(hwnd(), NULL, bounds_in_pixels.x(), bounds_in_pixels.y(),
+               bounds_in_pixels.width(), bounds_in_pixels.height(),
+               SWP_NOACTIVATE | SWP_NOZORDER);
 }
 
 void HWNDMessageHandler::SetSize(const gfx::Size& size) {
   SetWindowPos(hwnd(), NULL, 0, 0, size.width(), size.height(),
                SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOMOVE);
 }
 
 void HWNDMessageHandler::CenterWindow(const gfx::Size& size) {
   HWND parent = GetParent(hwnd());
   if (!IsWindow(hwnd()))
@@ skipping 613 matching lines @@
     }
   }
 }
 
 void HWNDMessageHandler::RedrawLayeredWindowContents() {
   if (invalid_rect_.IsEmpty())
     return;
 
   // We need to clip to the dirty rect ourselves.
   layered_window_contents_->sk_canvas()->save(SkCanvas::kClip_SaveFlag);
+  double scale = ui::win::GetDeviceScaleFactor();
+  layered_window_contents_->sk_canvas()->scale(
+      SkScalar(scale),SkScalar(scale));
   layered_window_contents_->ClipRect(invalid_rect_);
   delegate_->PaintLayeredWindow(layered_window_contents_.get());
+  layered_window_contents_->sk_canvas()->scale(
+      SkScalar(1.0/scale),SkScalar(1.0/scale));
   layered_window_contents_->sk_canvas()->restore();
 
   RECT wr;
   GetWindowRect(hwnd(), &wr);
   SIZE size = {wr.right - wr.left, wr.bottom - wr.top};
   POINT position = {wr.left, wr.top};
   HDC dib_dc = skia::BeginPlatformPaint(layered_window_contents_->sk_canvas());
   POINT zero = {0, 0};
   BLENDFUNCTION blend = {AC_SRC_OVER, 0, layered_alpha_, AC_SRC_ALPHA};
   UpdateLayeredWindow(hwnd(), NULL, &position, &size, dib_dc, &zero,
@@ skipping 930 matching lines @@
     DwmExtendFrameIntoClientArea(hwnd(), &m);
   }
   if (window_pos->flags & SWP_SHOWWINDOW)
     delegate_->HandleVisibilityChanged(true);
   else if (window_pos->flags & SWP_HIDEWINDOW)
     delegate_->HandleVisibilityChanged(false);
   SetMsgHandled(FALSE);
 }
 
 }  // namespace views