Revert of Make download item drags look like bookmark drags.

ui/base/dragdrop/drag_utils.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/base/dragdrop/drag_utils.h"
 
+#include "base/files/file_util.h"
+#include "base/logging.h"
+#include "base/macros.h"
+#include "base/strings/utf_string_conversions.h"
+#include "build/build_config.h"
 #include "ui/base/dragdrop/os_exchange_data.h"
 #include "ui/gfx/canvas.h"
-#include "ui/gfx/image/image_skia.h"
+#include "ui/gfx/font_list.h"
+#include "ui/gfx/geometry/point.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/geometry/size.h"
+#include "ui/gfx/image/canvas_image_source.h"
+#include "url/gurl.h"
 
 namespace drag_utils {
 
+namespace {
+
+// Maximum width of the link drag image in pixels.
+static const int kLinkDragImageVPadding = 3;
+
+// File dragging pixel measurements
+static const int kFileDragImageMaxWidth = 200;
+static const SkColor kFileDragImageTextColor = SK_ColorBLACK;
+
+class FileDragImageSource : public gfx::CanvasImageSource {
+ public:
+  FileDragImageSource(const base::FilePath& file_name,
+                      const gfx::ImageSkia& icon)
+      : CanvasImageSource(CalculateSize(icon), false),
+        file_name_(file_name),
+        icon_(icon) {
+  }
+
+  ~FileDragImageSource() override {}
+
+  // Overridden from gfx::CanvasImageSource.
+  void Draw(gfx::Canvas* canvas) override {
+    if (!icon_.isNull()) {
+      // Paint the icon.
+      canvas->DrawImageInt(icon_, (size().width() - icon_.width()) / 2, 0);
+    }
+
+    base::string16 name = file_name_.BaseName().LossyDisplayName();
+    const int flags = gfx::Canvas::TEXT_ALIGN_CENTER;
+    const gfx::FontList font_list;
+#if defined(OS_WIN)
+    // Paint the file name. We inset it one pixel to allow room for the halo.
+    const gfx::Rect rect(1, icon_.height() + kLinkDragImageVPadding + 1,
+                         size().width() - 2, font_list.GetHeight());
+    canvas->DrawStringRectWithHalo(name, font_list, kFileDragImageTextColor,
+                                   SK_ColorWHITE, rect, flags);
+#else
+    // NO_SUBPIXEL_RENDERING is required when drawing to a non-opaque canvas.
+    const gfx::Rect rect(0, icon_.height() + kLinkDragImageVPadding,
+                         size().width(), font_list.GetHeight());
+    canvas->DrawStringRectWithFlags(name, font_list, kFileDragImageTextColor,
+                                    rect,
+                                    flags | gfx::Canvas::NO_SUBPIXEL_RENDERING);
+#endif
+  }
+
+ private:
+  gfx::Size CalculateSize(const gfx::ImageSkia& icon) const {
+    const int width = kFileDragImageMaxWidth;
+    // Add +2 here to allow room for the halo.
+    const int height = gfx::FontList().GetHeight() + icon.height() +
+                       kLinkDragImageVPadding + 2;
+    return gfx::Size(width, height);
+  }
+
+  const base::FilePath file_name_;
+  const gfx::ImageSkia icon_;
+
+  DISALLOW_COPY_AND_ASSIGN(FileDragImageSource);
+};
+
+}  // namespace
+
+void CreateDragImageForFile(const base::FilePath& file_name,
+                            const gfx::ImageSkia& icon,
+                            ui::OSExchangeData* data_object) {
+  DCHECK(data_object);
+  gfx::CanvasImageSource* source = new FileDragImageSource(file_name, icon);
+  gfx::Size size = source->size();
+  // ImageSkia takes ownership of |source|.
+  gfx::ImageSkia image = gfx::ImageSkia(source, size);
+
+  gfx::Vector2d cursor_offset(size.width() / 2, kLinkDragImageVPadding);
+  SetDragImageOnDataObject(image, cursor_offset, data_object);
+}
+
 void SetDragImageOnDataObject(const gfx::Canvas& canvas,
                               const gfx::Vector2d& cursor_offset,
                               ui::OSExchangeData* data_object) {
   gfx::ImageSkia image = gfx::ImageSkia(canvas.ExtractImageRep());
   SetDragImageOnDataObject(image, cursor_offset, data_object);
 }
 
 #if !defined(OS_WIN)
 void SetDragImageOnDataObject(const gfx::ImageSkia& image_skia,
                               const gfx::Vector2d& cursor_offset,
                               ui::OSExchangeData* data_object) {
   data_object->provider().SetDragImage(image_skia, cursor_offset);
 }
 #endif
 
 }  // namespace drag_utils