Refactors drag_utils.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/113954

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17080 0039d316-1c4b-4281-b951-d872f2087c98

5 files changed, 111 insertions, 80 deletions

diff --git a/views/drag_utils.cc b/views/drag_utils.cc
index 009fc47..7ba6a86 100644
--- a/views/drag_utils.cc
+++ b/views/drag_utils.cc
@@ -4,18 +4,13 @@
 
 #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"
@@ -26,60 +21,11 @@ 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,
@@ -111,12 +57,11 @@ void SetURLAndDragImage(const GURL& url,
 
 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);
 
@@ -130,30 +75,18 @@ void CreateDragImageForFile(const std::wstring& file_name,
   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
diff --git a/views/drag_utils.h b/views/drag_utils.h
index 5cf68af8..e04e37e 100644
--- a/views/drag_utils.h
+++ b/views/drag_utils.h
@@ -5,7 +5,6 @@
 #ifndef VIEWS_DRAG_UTILS_H_
 #define VIEWS_DRAG_UTILS_H_
 
-#include <objidl.h>
 #include <string>
 
 namespace gfx {
@@ -30,7 +29,7 @@ void SetURLAndDragImage(const GURL& url,
 // portion will be truncated in the drag image.
 void CreateDragImageForFile(const std::wstring& file_name,
                             SkBitmap* icon,
-                            IDataObject* data_object);
+                            OSExchangeData* data_object);
 
 // Sets the drag image on data_object from the supplied canvas. width/height
 // are the size of the image to use, and the offsets give the location of
@@ -40,8 +39,7 @@ void SetDragImageOnDataObject(const gfx::Canvas& canvas,
                               int height,
                               int cursor_x_offset,
                               int cursor_y_offset,
-                              IDataObject* data_object);
-
+                              OSExchangeData* data_object);
 } // namespace drag_utils
 
 #endif  // #ifndef VIEWS_DRAG_UTILS_H_
diff --git a/views/drag_utils_gtk.cc b/views/drag_utils_gtk.cc
new file mode 100644
index 0000000..8a40b85
--- /dev/null
+++ b/views/drag_utils_gtk.cc
@@ -0,0 +1,22 @@
+// Copyright (c) 2009 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 "app/gfx/canvas.h"
+#include "base/logging.h"
+#include "app/os_exchange_data.h"
+
+namespace drag_utils {
+
+void SetDragImageOnDataObject(const gfx::Canvas& canvas,
+                              int width,
+                              int height,
+                              int cursor_x_offset,
+                              int cursor_y_offset,
+                              OSExchangeData* data_object) {
+  NOTIMPLEMENTED();
+}
+
+} // namespace drag_utils
diff --git a/views/drag_utils_win.cc b/views/drag_utils_win.cc
new file mode 100644
index 0000000..ed01386
--- /dev/null
+++ b/views/drag_utils_win.cc
@@ -0,0 +1,78 @@
+// 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/os_exchange_data.h"
+#include "base/gfx/gdi_util.h"
+
+namespace drag_utils {
+
+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 SetDragImageOnDataObject(const gfx::Canvas& canvas,
+                              int width,
+                              int height,
+                              int cursor_x_offset,
+                              int cursor_y_offset,
+                              OSExchangeData* 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
diff --git a/views/views.gyp b/views/views.gyp
index 85bb1d8..00a79bb 100644
--- a/views/views.gyp
+++ b/views/views.gyp
@@ -148,6 +148,8 @@
         'controls/tree/tree_view.h',
         'drag_utils.cc',
         'drag_utils.h',
+        'drag_utils_gtk.cc',
+        'drag_utils_win.cc',
         'event.cc',
         'event.h',
         'event_gtk.cc',
@@ -253,8 +255,6 @@
             'controls/textfield/textfield.cc',
             'controls/text_field.cc',
             'controls/tree/tree_view.cc',
-            'drag_utils.cc',
-            'drag_utils.h',
             'event_win.cc',
             'resize_corner.cc',
             'widget/accelerator_handler.cc',