1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "ui/views/button_drag_utils.h" 6 7 #include "base/strings/utf_string_conversions.h" 8 #include "grit/ui_resources.h" 9 #include "ui/base/dragdrop/drag_utils.h" 10 #include "ui/base/dragdrop/os_exchange_data.h" 11 #include "ui/base/resource/resource_bundle.h" 12 #include "ui/gfx/canvas.h" 13 #include "ui/gfx/image/image.h" 14 #include "ui/views/controls/button/text_button.h" 15 #include "ui/views/drag_utils.h" 16 #include "url/gurl.h" 17 18 namespace button_drag_utils { 19 20 // Maximum width of the link drag image in pixels. 21 static const int kLinkDragImageMaxWidth = 200; 22 23 void SetURLAndDragImage(const GURL& url, 24 const string16& title, 25 const gfx::ImageSkia& icon, 26 ui::OSExchangeData* data, 27 views::Widget* widget) { 28 DCHECK(url.is_valid() && data); 29 30 data->SetURL(url, title); 31 32 // Create a button to render the drag image for us. 33 views::TextButton button(NULL, 34 title.empty() ? UTF8ToUTF16(url.spec()) : title); 35 button.set_max_width(kLinkDragImageMaxWidth); 36 if (icon.isNull()) { 37 button.SetIcon(*ui::ResourceBundle::GetSharedInstance().GetImageNamed( 38 IDR_DEFAULT_FAVICON).ToImageSkia()); 39 } else { 40 button.SetIcon(icon); 41 } 42 gfx::Size prefsize = button.GetPreferredSize(); 43 button.SetBounds(0, 0, prefsize.width(), prefsize.height()); 44 45 // Render the image. 46 scoped_ptr<gfx::Canvas> canvas( 47 views::GetCanvasForDragImage(widget, prefsize)); 48 button.PaintButton(canvas.get(), views::TextButton::PB_FOR_DRAG); 49 drag_utils::SetDragImageOnDataObject(*canvas, prefsize, 50 gfx::Vector2d(prefsize.width() / 2, prefsize.height() / 2), data); 51 } 52 53 } // namespace button_drag_utils 54
