Split out the contents view into its own header. rename it to AutocompletePop...

chrome/browser/views/autocomplete/autocomplete_popup_contents_view.cc

+// 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 "chrome/browser/views/autocomplete/autocomplete_popup_contents_view.h"
+
+#include <dwmapi.h>
+
+#include "chrome/browser/autocomplete/autocomplete_popup_model.h"
+#include "chrome/browser/views/autocomplete/autocomplete_popup_win.h"
+#include "chrome/common/gfx/chrome_canvas.h"
+#include "chrome/common/gfx/color_utils.h"
+#include "chrome/common/gfx/insets.h"
+#include "chrome/common/gfx/path.h"
+#include "chrome/common/resource_bundle.h"
+#include "chrome/views/widget/widget.h"
+#include "grit/theme_resources.h"
+#include "skia/include/SkShader.h"
+
+// The stroke color around the popup border.
+static const SkColor kEdgeColor = SkColorSetRGB(183, 195, 219);
+static const int kPopupTransparency = 235;
+static const int kHoverRowAlpha = 0x40;
+
+class AutocompleteResultView : public views::View {
+ public:
+  AutocompleteResultView(AutocompleteResultViewModel* model, int model_index);
+  virtual ~AutocompleteResultView();
+
+  // Overridden from views::View:
+  virtual void Paint(ChromeCanvas* canvas);
+  virtual gfx::Size GetPreferredSize();
+  virtual void OnMouseEntered(const views::MouseEvent& event);
+  virtual void OnMouseMoved(const views::MouseEvent& event);
+  virtual void OnMouseExited(const views::MouseEvent& event);
+  virtual bool OnMousePressed(const views::MouseEvent& event);
+  virtual void OnMouseReleased(const views::MouseEvent& event, bool canceled);
+  virtual bool OnMouseDragged(const views::MouseEvent& event);
+
+ private:
+  // Paint the result view in different ways.
+  void PaintAsSearchDefault(ChromeCanvas* canvas);
+  void PaintAsURLSuggestion(ChromeCanvas* canvas);
+  void PaintAsQuerySuggestion(ChromeCanvas* canvas);
+  void PaintAsMoreRow(ChromeCanvas* canvas);
+
+  // Get colors for row backgrounds and text for different row states.
+  SkColor GetHighlightRowColor() const;
+  SkColor GetHighlightTextColor() const;
+  SkColor GetHoverRowColor() const;
+  SkColor GetTextColor() const;
+
+  // This row's model and model index.
+  AutocompleteResultViewModel* model_;
+  size_t model_index_;
+
+  // True if the mouse is over this row.
+  bool hot_;
+
+  DISALLOW_COPY_AND_ASSIGN(AutocompleteResultView);
+};
+
+AutocompleteResultView::AutocompleteResultView(
+    AutocompleteResultViewModel* model,
+    int model_index)
+    : model_(model),
+      model_index_(model_index),
+      hot_(false) {
+}
+
+AutocompleteResultView::~AutocompleteResultView() {
+}
+
+void AutocompleteResultView::Paint(ChromeCanvas* canvas) {
+  // Paint the row background if any.
+  if (model_->IsSelectedIndex(model_index_))
+    canvas->FillRectInt(GetHighlightRowColor(), 0, 0, width(), height());
+  else if (hot_)
+    canvas->FillRectInt(GetHoverRowColor(), 0, 0, width(), height());
+}
+
+gfx::Size AutocompleteResultView::GetPreferredSize() {
+  return gfx::Size(0, 30);
+}
+
+void AutocompleteResultView::OnMouseEntered(const views::MouseEvent& event) {
+  hot_ = true;
+  SchedulePaint();
+}
+
+void AutocompleteResultView::OnMouseMoved(const views::MouseEvent& event) {
+  if (!hot_) {
+    hot_ = true;
+    SchedulePaint();
+  }
+}
+
+void AutocompleteResultView::OnMouseExited(const views::MouseEvent& event) {
+  hot_ = false;
+  SchedulePaint();
+}
+
+bool AutocompleteResultView::OnMousePressed(const views::MouseEvent& event) {
+  if (event.IsOnlyLeftMouseButton()) {
+    model_->SetHoveredLine(model_index_);
+    model_->SetSelectedLine(model_index_, false);
+  } else if (event.IsOnlyMiddleMouseButton()) {
+    model_->SetHoveredLine(model_index_);
+  }
+  return true;
+}
+
+void AutocompleteResultView::OnMouseReleased(const views::MouseEvent& event,
+                                             bool canceled) {
+  if (canceled)
+    return;
+  if (event.IsOnlyMiddleMouseButton())
+    model_->OpenIndex(model_index_, NEW_BACKGROUND_TAB);
+  else if (event.IsOnlyLeftMouseButton())
+    model_->OpenIndex(model_index_, CURRENT_TAB);
+}
+
+bool AutocompleteResultView::OnMouseDragged(const views::MouseEvent& event) {
+  // TODO(beng): move all message handling into the contents view and override
+  //             GetViewForPoint.
+  return false;
+}
+
+void AutocompleteResultView::PaintAsSearchDefault(ChromeCanvas* canvas) {
+
+}
+
+void AutocompleteResultView::PaintAsURLSuggestion(ChromeCanvas* canvas) {
+
+}
+
+void AutocompleteResultView::PaintAsQuerySuggestion(ChromeCanvas* canvas) {
+
+}
+
+void AutocompleteResultView::PaintAsMoreRow(ChromeCanvas* canvas) {
+
+}
+
+SkColor AutocompleteResultView::GetHighlightRowColor() const {
+  return color_utils::GetSysSkColor(COLOR_HIGHLIGHT);
+}
+
+SkColor AutocompleteResultView::GetHighlightTextColor() const {
+  return color_utils::GetSysSkColor(COLOR_HIGHLIGHTTEXT);
+}
+
+SkColor AutocompleteResultView::GetHoverRowColor() const {
+  COLORREF color = GetSysColor(COLOR_HIGHLIGHT);
+  return SkColorSetARGB(kHoverRowAlpha, GetRValue(color), GetGValue(color),
+                        GetBValue(color));
+}
+
+SkColor AutocompleteResultView::GetTextColor() const {
+  return color_utils::GetSysSkColor(COLOR_WINDOWTEXT);
+}
+
+class PopupBorder : public views::Border {
+ public:
+  PopupBorder() {
+    InitClass();
+  }
+  virtual ~PopupBorder() {}
+
+  // Returns the border radius of the edge of the popup.
+  static int GetBorderRadius() {
+    InitClass();
+    return dropshadow_topleft_->width() - dropshadow_left_->width() - 1;
+  }
+
+  // Overridden from views::Border:
+  virtual void Paint(const views::View& view, ChromeCanvas* canvas) const;
+  virtual void GetInsets(gfx::Insets* insets) const;
+
+ private:
+  // Border graphics.
+  static SkBitmap* dropshadow_left_;
+  static SkBitmap* dropshadow_topleft_;
+  static SkBitmap* dropshadow_top_;
+  static SkBitmap* dropshadow_topright_;
+  static SkBitmap* dropshadow_right_;
+  static SkBitmap* dropshadow_bottomright_;
+  static SkBitmap* dropshadow_bottom_;
+  static SkBitmap* dropshadow_bottomleft_;
+
+  static void InitClass();
+
+  DISALLOW_COPY_AND_ASSIGN(PopupBorder);
+};
+
+// static
+SkBitmap* PopupBorder::dropshadow_left_ = NULL;
+SkBitmap* PopupBorder::dropshadow_topleft_ = NULL;
+SkBitmap* PopupBorder::dropshadow_top_ = NULL;
+SkBitmap* PopupBorder::dropshadow_topright_ = NULL;
+SkBitmap* PopupBorder::dropshadow_right_ = NULL;
+SkBitmap* PopupBorder::dropshadow_bottomright_ = NULL;
+SkBitmap* PopupBorder::dropshadow_bottom_ = NULL;
+SkBitmap* PopupBorder::dropshadow_bottomleft_ = NULL;
+
+void PopupBorder::Paint(const views::View& view, ChromeCanvas* canvas) const {
+  int ds_tl_width = dropshadow_topleft_->width();
+  int ds_tl_height = dropshadow_topleft_->height();
+  int ds_tr_width = dropshadow_topright_->width();
+  int ds_tr_height = dropshadow_topright_->height();
+  int ds_br_width = dropshadow_bottomright_->width();
+  int ds_br_height = dropshadow_bottomright_->height();
+  int ds_bl_width = dropshadow_bottomleft_->width();
+  int ds_bl_height = dropshadow_bottomleft_->height();
+
+  canvas->DrawBitmapInt(*dropshadow_topleft_, 0, 0);
+  canvas->TileImageInt(*dropshadow_top_, ds_tl_width, 0,
+                       view.width() - ds_tr_width - ds_tl_width,
+                       dropshadow_top_->height());
+  canvas->DrawBitmapInt(*dropshadow_topright_, view.width() - ds_tr_width, 0);
+  canvas->TileImageInt(*dropshadow_right_,
+                       view.width() - dropshadow_right_->width(),
+                       ds_tr_height, dropshadow_right_->width(),
+                       view.height() - ds_tr_height - ds_br_height);
+  canvas->DrawBitmapInt(*dropshadow_bottomright_, view.width() - ds_br_width,
+                        view.height() - ds_br_height);
+  canvas->TileImageInt(*dropshadow_bottom_, ds_bl_width,
+                       view.height() - dropshadow_bottom_->height(),
+                       view.width() - ds_bl_width - ds_br_width,
+                       dropshadow_bottom_->height());
+  canvas->DrawBitmapInt(*dropshadow_bottomleft_, 0,
+                        view.height() - dropshadow_bottomleft_->height());
+  canvas->TileImageInt(*dropshadow_left_, 0, ds_tl_height,
+                       dropshadow_left_->width(),
+                       view.height() - ds_tl_height - ds_bl_height);
+}
+
+void PopupBorder::GetInsets(gfx::Insets* insets) const {
+  // The left, right and bottom edge image sizes define our insets. The corner
+  // images don't determine this because they can extend in both directions.
+  insets->Set(dropshadow_top_->height(), dropshadow_left_->width(),
+              dropshadow_bottom_->height(), dropshadow_right_->width());
+}
+
+void PopupBorder::InitClass() {
+  static bool initialized = false;
+  if (!initialized) {
+    ResourceBundle& rb = ResourceBundle::GetSharedInstance();
+    dropshadow_left_ = rb.GetBitmapNamed(IDR_OMNIBOX_POPUP_DS_L);
+    dropshadow_topleft_ = rb.GetBitmapNamed(IDR_OMNIBOX_POPUP_DS_TL);
+    dropshadow_top_ = rb.GetBitmapNamed(IDR_OMNIBOX_POPUP_DS_T);
+    dropshadow_topright_ = rb.GetBitmapNamed(IDR_OMNIBOX_POPUP_DS_TR);
+    dropshadow_right_ = rb.GetBitmapNamed(IDR_OMNIBOX_POPUP_DS_R);
+    dropshadow_bottomright_ = rb.GetBitmapNamed(IDR_OMNIBOX_POPUP_DS_BR);
+    dropshadow_bottom_ = rb.GetBitmapNamed(IDR_OMNIBOX_POPUP_DS_B);
+    dropshadow_bottomleft_ = rb.GetBitmapNamed(IDR_OMNIBOX_POPUP_DS_BL);
+    initialized = true;
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// AutocompletePopupContentsView, public:
+
+AutocompletePopupContentsView::AutocompletePopupContentsView(
+    AutocompletePopupWin* popup)
+    : popup_(popup) {
+      set_border(new PopupBorder);
+}
+
+void AutocompletePopupContentsView::SetAutocompleteResult(
+    const AutocompleteResult& result) {
+  RemoveAllChildViews(true);
+  for (size_t i = 0; i < result.size(); ++i) {
+    AutocompleteMatch match = result.match_at(i);
+    AutocompleteResultView* result = new AutocompleteResultView(this, i);
+    AddChildView(result);
+  }
+  Layout();
+}
+
+void AutocompletePopupContentsView::InvalidateLine(int index) {
+  GetChildViewAt(index)->SchedulePaint();
+}
+
+bool AutocompletePopupContentsView::IsSelectedIndex(size_t index) {
+  return index == popup_->GetModel()->selected_line();
+}
+
+AutocompleteMatch::Type AutocompletePopupContentsView::GetResultTypeAtIndex(
+    size_t index) {
+  return popup_->GetModel()->result().match_at(index).type;
+}
+
+void AutocompletePopupContentsView::OpenIndex(
+    size_t index,
+    WindowOpenDisposition disposition) {
+  popup_->OpenIndex(index, disposition);
+}
+
+void AutocompletePopupContentsView::SetHoveredLine(size_t index) {
+  popup_->SetHoveredLine(index);
+}
+
+void AutocompletePopupContentsView::SetSelectedLine(size_t index,
+                                                    bool revert_to_default) {
+  popup_->SetSelectedLine(index, revert_to_default);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// AutocompletePopupContentsView, views::View overrides:
+
+void AutocompletePopupContentsView::PaintChildren(ChromeCanvas* canvas) {
+  // We paint our children in an unconventional way.
+  //
+  // Because the border of this view creates an anti-aliased round-rect region
+  // for the contents, we need to render our rectangular result child views into
+  // this round rect region. We can't use a simple clip because clipping is
+  // 1-bit and we get nasty jagged edges.
+  //
+  // Instead, we paint all our children into a second canvas and use that as a
+  // shader to fill a path representing the round-rect clipping region. This
+  // yields a nice anti-aliased edge.
+  gfx::Rect contents_rect = GetLocalBounds(false);
+  ChromeCanvas contents_canvas(contents_rect.width(), contents_rect.height(),
+                               true);
+  contents_canvas.FillRectInt(color_utils::GetSysSkColor(COLOR_WINDOW), 0, 0,
+                              contents_rect.width(), contents_rect.height());
+  // We want the contents background to be slightly transparent so we can see
+  // the blurry glass effect on DWM systems behind.
+  MakeCanvasTransparent(&contents_canvas);
+  View::PaintChildren(&contents_canvas);
+
+  // Now paint the contents of the contents canvas into the actual canvas.
+  SkPaint paint;
+  paint.setAntiAlias(true);
+
+  SkShader* shader = SkShader::CreateBitmapShader(
+      contents_canvas.getDevice()->accessBitmap(false),
+      SkShader::kClamp_TileMode,
+      SkShader::kClamp_TileMode);
+  paint.setShader(shader);
+  shader->unref();
+
+  gfx::Path path;
+  MakeContentsPath(&path, contents_rect);
+  canvas->drawPath(path, paint);
+}
+
+void AutocompletePopupContentsView::Layout() {
+  UpdateBlurRegion();
+
+  // Size our children to the available content area.
+  gfx::Rect contents_rect = GetLocalBounds(false);
+  int child_count = GetChildViewCount();
+  int top = contents_rect.y();
+  for (int i = 0; i < child_count; ++i) {
+    View* v = GetChildViewAt(i);
+    v->SetBounds(contents_rect.x(), top, contents_rect.width(),
+                 v->GetPreferredSize().height());
+    top = v->bounds().bottom();
+  }
+
+  // We need to manually schedule a paint here since we are a layered window and
+  // won't implicitly require painting until we ask for one.
+  SchedulePaint();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// AutocompletePopupContentsView, private:
+
+void AutocompletePopupContentsView::MakeContentsPath(
+    gfx::Path* path,
+    const gfx::Rect& bounding_rect) {
+  SkRect rect;
+  rect.set(SkIntToScalar(bounding_rect.x()),
+           SkIntToScalar(bounding_rect.y()),
+           SkIntToScalar(bounding_rect.right()),
+           SkIntToScalar(bounding_rect.bottom()));
+
+  SkScalar radius = SkIntToScalar(PopupBorder::GetBorderRadius());
+  path->addRoundRect(rect, radius, radius);
+}
+
+void AutocompletePopupContentsView::UpdateBlurRegion() {
+  // Provide a blurred background effect within the contents region of the
+  // popup.
+  DWM_BLURBEHIND bb = {0};
+  bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION;
+  bb.fEnable = true;
+
+  // Translate the contents rect into widget coordinates, since that's what
+  // DwmEnableBlurBehindWindow expects a region in.
+  gfx::Rect contents_rect = GetLocalBounds(false);
+  gfx::Point origin(contents_rect.origin());
+  views::View::ConvertPointToWidget(this, &origin);
+  contents_rect.set_origin(origin);
+
+  gfx::Path contents_path;
+  MakeContentsPath(&contents_path, contents_rect);
+  ScopedGDIObject<HRGN> popup_region;
+  popup_region.Set(contents_path.CreateHRGN());
+  bb.hRgnBlur = popup_region.Get();
+  DwmEnableBlurBehindWindow(GetWidget()->GetNativeView(), &bb);
+}
+
+void AutocompletePopupContentsView::MakeCanvasTransparent(
+    ChromeCanvas* canvas) {
+  // Allow the window blur effect to show through the popup background.
+  SkPaint paint;
+  paint.setColor(SkColorSetARGB(kPopupTransparency, 255, 255, 255));
+  paint.setPorterDuffXfermode(SkPorterDuff::kDstIn_Mode);
+  paint.setStyle(SkPaint::kFill_Style);
+  canvas->FillRectInt(0, 0, canvas->getDevice()->width(),
+                      canvas->getDevice()->height(), paint);
+}
+