It is time.

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/strings/utf_string_conversions.h"
-#include "ui/base/dragdrop/os_exchange_data.h"
-#include "ui/gfx/canvas.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) {
-  }
-
-  virtual ~FileDragImageSource() {
-  }
-
-  // Overridden from gfx::CanvasImageSource.
-  virtual 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);
-}
-
-}  // namespace drag_utils