| // 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/views/button_drag_utils.h" |
| |
| #include "base/strings/utf_string_conversions.h" |
| #include "ui/base/dragdrop/drag_utils.h" |
| #include "ui/base/dragdrop/os_exchange_data.h" |
| #include "ui/base/resource/resource_bundle.h" |
| #include "ui/compositor/paint_context.h" |
| #include "ui/gfx/canvas.h" |
| #include "ui/gfx/geometry/point.h" |
| #include "ui/gfx/geometry/vector2d.h" |
| #include "ui/gfx/image/image.h" |
| #include "ui/resources/grit/ui_resources.h" |
| #include "ui/views/controls/button/label_button.h" |
| #include "ui/views/drag_utils.h" |
| #include "ui/views/widget/widget.h" |
| #include "url/gurl.h" |
| |
| namespace button_drag_utils { |
| |
| // Maximum width of the link drag image in pixels. |
| static const int kLinkDragImageMaxWidth = 150; |
| |
| void SetURLAndDragImage(const GURL& url, |
| const base::string16& title, |
| const gfx::ImageSkia& icon, |
| const gfx::Point* press_pt, |
| ui::OSExchangeData* data, |
| views::Widget* widget) { |
| DCHECK(url.is_valid() && data); |
| data->SetURL(url, title); |
| SetDragImage(url, title, icon, press_pt, data, widget); |
| } |
| |
| void SetDragImage(const GURL& url, |
| const base::string16& title, |
| const gfx::ImageSkia& icon, |
| const gfx::Point* press_pt, |
| ui::OSExchangeData* data, |
| views::Widget* widget) { |
| // Create a button to render the drag image for us. |
| views::LabelButton button(NULL, |
| title.empty() ? base::UTF8ToUTF16(url.spec()) |
| : title); |
| button.SetTextSubpixelRenderingEnabled(false); |
| const ui::NativeTheme* theme = |
| widget ? widget->GetNativeTheme() : ui::NativeTheme::instance(); |
| button.SetTextColor(views::Button::STATE_NORMAL, |
| theme->GetSystemColor(ui::NativeTheme::kColorId_LabelEnabledColor)); |
| gfx::ShadowValues shadows( |
| 10, |
| gfx::ShadowValue(gfx::Vector2d(0, 0), 1.0f, |
| theme->GetSystemColor( |
| ui::NativeTheme::kColorId_LabelBackgroundColor))); |
| button.SetTextShadows(shadows); |
| button.SetMaxSize(gfx::Size(kLinkDragImageMaxWidth, 0)); |
| if (icon.isNull()) { |
| button.SetImage(views::Button::STATE_NORMAL, |
| *ui::ResourceBundle::GetSharedInstance().GetImageNamed( |
| IDR_DEFAULT_FAVICON).ToImageSkia()); |
| } else { |
| button.SetImage(views::Button::STATE_NORMAL, icon); |
| } |
| gfx::Size prefsize = button.GetPreferredSize(); |
| button.SetBounds(0, 0, prefsize.width(), prefsize.height()); |
| |
| gfx::Vector2d press_point; |
| if (press_pt) |
| press_point = press_pt->OffsetFromOrigin(); |
| else |
| press_point = gfx::Vector2d(prefsize.width() / 2, prefsize.height() / 2); |
| |
| // Render the image. |
| scoped_ptr<gfx::Canvas> canvas( |
| views::GetCanvasForDragImage(widget, prefsize)); |
| button.Paint(ui::PaintContext(canvas.get())); |
| drag_utils::SetDragImageOnDataObject(*canvas, press_point, data); |
| } |
| |
| } // namespace button_drag_utils |