Refactors drag_utils.

views/drag_utils.cc

 // Copyright (c) 2006-2008 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 "views/drag_utils.h"
 
-#include <objidl.h>
-#include <shlobj.h>
-#include <shobjidl.h>
-
 #include "app/gfx/canvas.h"
 #include "app/gfx/font.h"
 #include "app/l10n_util.h"
 #include "app/os_exchange_data.h"
 #include "app/resource_bundle.h"
 #include "base/file_util.h"
-#include "base/gfx/gdi_util.h"
-#include "base/gfx/point.h"
+#include "base/logging.h"
 #include "base/string_util.h"
 #include "googleurl/src/gurl.h"
 #include "grit/app_resources.h"
 #include "views/controls/button/text_button.h"
 
 namespace drag_utils {
 
 // Maximum width of the link drag image in pixels.
 static const int kLinkDragImageMaxWidth = 200;
 static const int kLinkDragImageVPadding = 3;
-static const int kLinkDragImageVSpacing = 2;
-static const int kLinkDragImageHPadding = 4;
-static const SkColor kLinkDragImageBGColor = SkColorSetRGB(131, 146, 171);
-//static const SkColor kLinkDragImageBGColor = SkColorSetRGB(195, 217, 255);
-static const SkColor kLinkDragImageTextColor = SK_ColorBLACK;
 
 // File dragging pixel measurements
 static const int kFileDragImageMaxWidth = 200;
 static const SkColor kFileDragImageTextColor = SK_ColorBLACK;
 
-static void SetDragImageOnDataObject(HBITMAP hbitmap,
-                                     int width,
-                                     int height,
-                                     int cursor_offset_x,
-                                     int cursor_offset_y,
-                                     IDataObject* data_object) {
-  IDragSourceHelper* helper = NULL;
-  HRESULT rv = CoCreateInstance(CLSID_DragDropHelper, 0, CLSCTX_INPROC_SERVER,
-      IID_IDragSourceHelper, reinterpret_cast<LPVOID*>(&helper));
-  if (SUCCEEDED(rv)) {
-    SHDRAGIMAGE sdi;
-    sdi.sizeDragImage.cx = width;
-    sdi.sizeDragImage.cy = height;
-    sdi.crColorKey = 0xFFFFFFFF;
-    sdi.hbmpDragImage = hbitmap;
-    sdi.ptOffset.x = cursor_offset_x;
-    sdi.ptOffset.y = cursor_offset_y;
-    helper->InitializeFromBitmap(&sdi, data_object);
-  }
-};
-
-// Blit the contents of the canvas to a new HBITMAP. It is the caller's
-// responsibility to release the |bits| buffer.
-static HBITMAP CreateBitmapFromCanvas(const gfx::Canvas& canvas,
-                                      int width,
-                                      int height) {
-  HDC screen_dc = GetDC(NULL);
-  BITMAPINFOHEADER header;
-  gfx::CreateBitmapHeader(width, height, &header);
-  void* bits;
-  HBITMAP bitmap =
-      CreateDIBSection(screen_dc, reinterpret_cast<BITMAPINFO*>(&header),
-                       DIB_RGB_COLORS, &bits, NULL, 0);
-  HDC compatible_dc = CreateCompatibleDC(screen_dc);
-  HGDIOBJ old_object = SelectObject(compatible_dc, bitmap);
-  BitBlt(compatible_dc, 0, 0, width, height,
-         canvas.getTopPlatformDevice().getBitmapDC(),
-         0, 0, SRCCOPY);
-  SelectObject(compatible_dc, old_object);
-  ReleaseDC(NULL, compatible_dc);
-  ReleaseDC(NULL, screen_dc);
-  return bitmap;
-}
-
 void SetURLAndDragImage(const GURL& url,
                         const std::wstring& title,
                         const SkBitmap& icon,
                         OSExchangeData* data) {
   DCHECK(url.is_valid() && data);
 
   data->SetURL(url, title);
 
   // Create a button to render the drag image for us.
   views::TextButton button(NULL,
@@ skipping 11 matching lines @@
   // Render the image.
   gfx::Canvas canvas(prefsize.width(), prefsize.height(), false);
   button.Paint(&canvas, true);
   SetDragImageOnDataObject(canvas, prefsize.width(), prefsize.height(),
                            prefsize.width() / 2, prefsize.height() / 2,
                            data);
 }
 
 void CreateDragImageForFile(const std::wstring& file_name,
                             SkBitmap* icon,
-                            IDataObject* data_object) {
+                            OSExchangeData* data_object) {
   DCHECK(icon);
   DCHECK(data_object);
 
   // Set up our text portion
-  const std::wstring& name = file_util::GetFilenameFromPath(file_name);
   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
   gfx::Font font = rb.GetFont(ResourceBundle::BaseFont);
 
   const int width = kFileDragImageMaxWidth;
   // Add +2 here to allow room for the halo.
   const int height = font.height() + icon->height() +
                      kLinkDragImageVPadding + 2;
   gfx::Canvas canvas(width, height, false /* translucent */);
 
   // Paint the icon.
   canvas.DrawBitmapInt(*icon, (width - icon->width()) / 2, 0);
 
   // Paint the file name. We inset it one pixel to allow room for the halo.
+#if defined(OS_WIN)
+  const std::wstring& name = file_util::GetFilenameFromPath(file_name);
   canvas.DrawStringWithHalo(name, font, kFileDragImageTextColor, SK_ColorWHITE,
                             1, icon->height() + kLinkDragImageVPadding + 1,
                             width - 2, font.height(),
                             gfx::Canvas::TEXT_ALIGN_CENTER);
+#else
+  NOTIMPLEMENTED();
+#endif
 
   SetDragImageOnDataObject(canvas, width, height, width / 2,
                            kLinkDragImageVPadding, data_object);
 }
 
-void SetDragImageOnDataObject(const gfx::Canvas& canvas,
-                              int width,
-                              int height,
-                              int cursor_x_offset,
-                              int cursor_y_offset,
-                              IDataObject* data_object) {
-  DCHECK(data_object && width > 0 && height > 0);
-  // SetDragImageOnDataObject(HBITMAP) takes ownership of the bitmap.
-  HBITMAP bitmap = CreateBitmapFromCanvas(canvas, width, height);
-
-  // Attach 'bitmap' to the data_object.
-  SetDragImageOnDataObject(bitmap, width, height,
-                           cursor_x_offset,
-                           cursor_y_offset,
-                           data_object);
-}
-
 } // namespace drag_utils