Experiments with a new tabstrip + animator

chrome/browser/views/tabs/tab_2.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/tabs/tab_2.h"
+
+#include "app/gfx/canvas.h"
+#include "app/gfx/font.h"
+#include "app/gfx/path.h"
+#include "views/animator.h"
+
+static const SkScalar kTabCapWidth = 15;
+static const SkScalar kTabTopCurveWidth = 4;
+static const SkScalar kTabBottomCurveWidth = 3;
+
+////////////////////////////////////////////////////////////////////////////////
+// Tab2, public:
+
+Tab2::Tab2(Tab2Model* model)
+    : model_(model),
+      dragging_(false),
+      removing_(false) {
+}
+
+Tab2::~Tab2() {
+}
+
+void Tab2::SetRemovingModel(Tab2Model* model) {
+  removing_model_.reset(model);
+  model_ = removing_model_.get();
+}
+
+bool Tab2::IsAnimating() const {
+  return animator_.get() && animator_->IsAnimating();
+}
+
+views::Animator* Tab2::GetAnimator() {
+  if (!animator_.get())
+    animator_.reset(new views::Animator(this, model_->AsAnimatorDelegate()));
+  return animator_.get();
+}
+
+// static
+gfx::Size Tab2::GetStandardSize() {
+  return gfx::Size(140, 27);
+}
+
+void Tab2::AddTabShapeToPath(gfx::Path* path) const {
+  SkScalar h = SkIntToScalar(height());
+  SkScalar w = SkIntToScalar(width());
+
+  path->moveTo(0, h);
+
+  // Left end cap.
+  path->lineTo(kTabBottomCurveWidth, h - kTabBottomCurveWidth);
+  path->lineTo(kTabCapWidth - kTabTopCurveWidth, kTabTopCurveWidth);
+  path->lineTo(kTabCapWidth, 0);
+
+  // Connect to the right cap.
+  path->lineTo(w - kTabCapWidth, 0);
+
+  // Right end cap.
+  path->lineTo(w - kTabCapWidth + kTabTopCurveWidth, kTabTopCurveWidth);
+  path->lineTo(w - kTabBottomCurveWidth, h - kTabBottomCurveWidth);
+  path->lineTo(w, h);
+
+  // Close out the path.
+  path->lineTo(0, h);
+  path->close();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Tab2, views::View overrides:
+
+gfx::Size Tab2::GetPreferredSize() {
+  return gfx::Size();
+}
+
+void Tab2::Layout() {
+}
+
+void Tab2::Paint(gfx::Canvas* canvas) {
+  SkColor color = model_->IsSelected(this) ? SK_ColorRED : SK_ColorGREEN;
+
+  gfx::Path path;
+  AddTabShapeToPath(&path);
+  SkPaint paint;
+  paint.setAntiAlias(true);
+  paint.setColor(color);
+  canvas->drawPath(path, paint);
+
+  // TODO(beng): less ad-hoc
+  canvas->DrawStringInt(model_->GetTitle(this), gfx::Font(), SK_ColorBLACK,
+                        5, 3, 100, 20);
+}
+
+bool Tab2::OnMousePressed(const views::MouseEvent& event) {
+  if (event.IsLeftMouseButton()) {
+    model_->SelectTab(this);
+    model_->CaptureDragInfo(this, event);
+  }
+  return true;
+}
+
+bool Tab2::OnMouseDragged(const views::MouseEvent& event) {
+  dragging_ = true;
+  return model_->DragTab(this, event);
+}
+
+void Tab2::OnMouseReleased(const views::MouseEvent& event, bool canceled) {
+  if (dragging_) {
+    dragging_ = false;
+    model_->DragEnded(this);
+  }
+}
+
+void Tab2::DidChangeBounds(const gfx::Rect& previous,
+                           const gfx::Rect& current) {
+}