ui/aura/window_targeter_unittest.cc

   1 // Copyright (c) 2013 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/aura/window_targeter.h"
   6
   7 #include "ui/aura/scoped_window_targeter.h"
   8 #include "ui/aura/test/aura_test_base.h"
   9 #include "ui/aura/test/test_window_delegate.h"
  10 #include "ui/aura/window.h"
  11 #include "ui/events/event_utils.h"
  12 #include "ui/events/test/test_event_handler.h"
  13
  14 namespace aura {
  15
  16 // Always returns the same window.
  17 class StaticWindowTargeter : public WindowTargeter {
  18  public:
  19   explicit StaticWindowTargeter(aura::Window* window)
  20       : window_(window) {}
  21   ~StaticWindowTargeter() override {}
  22
  23  private:
  24   // aura::WindowTargeter:
  25   Window* FindTargetForLocatedEvent(Window* window,
  26                                     ui::LocatedEvent* event) override {
  27     return window_;
  28   }
  29
  30   Window* window_;
  31
  32   DISALLOW_COPY_AND_ASSIGN(StaticWindowTargeter);
  33 };
  34
  35 class WindowTargeterTest : public test::AuraTestBase {
  36  public:
  37   WindowTargeterTest() {}
  38   ~WindowTargeterTest() override {}
  39
  40   Window* root_window() { return AuraTestBase::root_window(); }
  41 };
  42
  43 gfx::RectF GetEffectiveVisibleBoundsInRootWindow(Window* window) {
  44   gfx::RectF bounds = gfx::Rect(window->bounds().size());
  45   Window* root = window->GetRootWindow();
  46   CHECK(window->layer());
  47   CHECK(root->layer());
  48   gfx::Transform transform;
  49   if (!window->layer()->GetTargetTransformRelativeTo(root->layer(), &transform))
  50     return gfx::RectF();
  51   transform.TransformRect(&bounds);
  52   return bounds;
  53 }
  54
  55 TEST_F(WindowTargeterTest, Basic) {
  56   test::TestWindowDelegate delegate;
  57   scoped_ptr<Window> window(CreateNormalWindow(1, root_window(), &delegate));
  58   Window* one = CreateNormalWindow(2, window.get(), &delegate);
  59   Window* two = CreateNormalWindow(3, window.get(), &delegate);
  60
  61   window->SetBounds(gfx::Rect(0, 0, 100, 100));
  62   one->SetBounds(gfx::Rect(0, 0, 500, 100));
  63   two->SetBounds(gfx::Rect(501, 0, 500, 1000));
  64
  65   root_window()->Show();
  66
  67   ui::test::TestEventHandler handler;
  68   one->AddPreTargetHandler(&handler);
  69
  70   ui::MouseEvent press(ui::ET_MOUSE_PRESSED, gfx::Point(20, 20),
  71                        gfx::Point(20, 20), ui::EventTimeForNow(), ui::EF_NONE,
  72                        ui::EF_NONE);
  73   DispatchEventUsingWindowDispatcher(&press);
  74   EXPECT_EQ(1, handler.num_mouse_events());
  75
  76   handler.Reset();
  77   DispatchEventUsingWindowDispatcher(&press);
  78   EXPECT_EQ(1, handler.num_mouse_events());
  79
  80   one->RemovePreTargetHandler(&handler);
  81 }
  82
  83 TEST_F(WindowTargeterTest, ScopedWindowTargeter) {
  84   test::TestWindowDelegate delegate;
  85   scoped_ptr<Window> window(CreateNormalWindow(1, root_window(), &delegate));
  86   Window* child = CreateNormalWindow(2, window.get(), &delegate);
  87
  88   window->SetBounds(gfx::Rect(30, 30, 100, 100));
  89   child->SetBounds(gfx::Rect(20, 20, 50, 50));
  90   root_window()->Show();
  91
  92   ui::EventTarget* root = root_window();
  93   ui::EventTargeter* targeter = root->GetEventTargeter();
  94
  95   gfx::Point event_location(60, 60);
  96   {
  97     ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, event_location, event_location,
  98                          ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
  99     EXPECT_EQ(child, targeter->FindTargetForEvent(root, &mouse));
 100   }
 101
 102   // Install a targeter on |window| so that the events never reach the child.
 103   scoped_ptr<ScopedWindowTargeter> scoped_targeter(
 104       new ScopedWindowTargeter(window.get(), scoped_ptr<ui::EventTargeter>(
 105           new StaticWindowTargeter(window.get()))));
 106   {
 107     ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, event_location, event_location,
 108                          ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
 109     EXPECT_EQ(window.get(), targeter->FindTargetForEvent(root, &mouse));
 110   }
 111   scoped_targeter.reset();
 112   {
 113     ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, event_location, event_location,
 114                          ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
 115     EXPECT_EQ(child, targeter->FindTargetForEvent(root, &mouse));
 116   }
 117 }
 118
 119 // Test that ScopedWindowTargeter does not crash if the window for which it
 120 // replaces the targeter gets destroyed before it does.
 121 TEST_F(WindowTargeterTest, ScopedWindowTargeterWindowDestroyed) {
 122   test::TestWindowDelegate delegate;
 123   scoped_ptr<Window> window(CreateNormalWindow(1, root_window(), &delegate));
 124   scoped_ptr<ScopedWindowTargeter> scoped_targeter(
 125       new ScopedWindowTargeter(window.get(), scoped_ptr<ui::EventTargeter>(
 126           new StaticWindowTargeter(window.get()))));
 127
 128   window.reset();
 129   scoped_targeter.reset();
 130
 131   // We did not crash!
 132 }
 133
 134 TEST_F(WindowTargeterTest, TargetTransformedWindow) {
 135   root_window()->Show();
 136
 137   test::TestWindowDelegate delegate;
 138   scoped_ptr<Window> window(CreateNormalWindow(2, root_window(), &delegate));
 139
 140   const gfx::Rect window_bounds(100, 20, 400, 80);
 141   window->SetBounds(window_bounds);
 142
 143   ui::EventTarget* root_target = root_window();
 144   ui::EventTargeter* targeter = root_target->GetEventTargeter();
 145   gfx::Point event_location(490, 50);
 146   {
 147     ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, event_location, event_location,
 148                          ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
 149     EXPECT_EQ(window.get(), targeter->FindTargetForEvent(root_target, &mouse));
 150   }
 151
 152   // Scale |window| by 50%. This should move it away from underneath
 153   // |event_location|, so an event in that location will not be targeted to it.
 154   gfx::Transform transform;
 155   transform.Scale(0.5, 0.5);
 156   window->SetTransform(transform);
 157   EXPECT_EQ(gfx::RectF(100, 20, 200, 40).ToString(),
 158             GetEffectiveVisibleBoundsInRootWindow(window.get()).ToString());
 159   {
 160     ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, event_location, event_location,
 161                          ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
 162     EXPECT_EQ(root_window(), targeter->FindTargetForEvent(root_target, &mouse));
 163   }
 164
 165   transform = gfx::Transform();
 166   transform.Translate(200, 10);
 167   transform.Scale(0.5, 0.5);
 168   window->SetTransform(transform);
 169   EXPECT_EQ(gfx::RectF(300, 30, 200, 40).ToString(),
 170             GetEffectiveVisibleBoundsInRootWindow(window.get()).ToString());
 171   {
 172     ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, event_location, event_location,
 173                          ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
 174     EXPECT_EQ(window.get(), targeter->FindTargetForEvent(root_target, &mouse));
 175   }
 176 }
 177
 178 class IdCheckingEventTargeter : public WindowTargeter {
 179  public:
 180   IdCheckingEventTargeter(int id) : id_(id) {}
 181   ~IdCheckingEventTargeter() override {}
 182
 183  protected:
 184   // WindowTargeter:
 185   bool SubtreeShouldBeExploredForEvent(Window* window,
 186                                        const ui::LocatedEvent& event) override {
 187     return (window->id() == id_ &&
 188             WindowTargeter::SubtreeShouldBeExploredForEvent(window, event));
 189   }
 190
 191  private:
 192   int id_;
 193 };
 194
 195 TEST_F(WindowTargeterTest, Bounds) {
 196   test::TestWindowDelegate delegate;
 197   scoped_ptr<Window> parent(CreateNormalWindow(1, root_window(), &delegate));
 198   scoped_ptr<Window> child(CreateNormalWindow(1, parent.get(), &delegate));
 199   scoped_ptr<Window> grandchild(CreateNormalWindow(1, child.get(), &delegate));
 200
 201   parent->SetBounds(gfx::Rect(0, 0, 30, 30));
 202   child->SetBounds(gfx::Rect(5, 5, 20, 20));
 203   grandchild->SetBounds(gfx::Rect(5, 5, 5, 5));
 204
 205   ASSERT_EQ(1u, root_window()->children().size());
 206   ASSERT_EQ(1u, root_window()->children()[0]->children().size());
 207   ASSERT_EQ(1u, root_window()->children()[0]->children()[0]->children().size());
 208
 209   Window* parent_r = root_window()->children()[0];
 210   Window* child_r = parent_r->children()[0];
 211   Window* grandchild_r = child_r->children()[0];
 212
 213   ui::EventTarget* root_target = root_window();
 214   ui::EventTargeter* targeter = root_target->GetEventTargeter();
 215
 216   // Dispatch a mouse event that falls on the parent, but not on the child. When
 217   // the default event-targeter used, the event will still reach |grandchild|,
 218   // because the default targeter does not look at the bounds.
 219   ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, gfx::Point(1, 1), gfx::Point(1, 1),
 220                        ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
 221   EXPECT_EQ(parent_r, targeter->FindTargetForEvent(root_target, &mouse));
 222
 223   // Install a targeter on the |child| that looks at the window id as well
 224   // as the bounds and makes sure the event reaches the target only if the id of
 225   // the window is equal to 2 (incorrect). This causes the event to get handled
 226   // by |parent|.
 227   ui::MouseEvent mouse2(ui::ET_MOUSE_MOVED, gfx::Point(8, 8), gfx::Point(8, 8),
 228                         ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
 229   scoped_ptr<ui::EventTargeter> original_targeter = child_r->SetEventTargeter(
 230       scoped_ptr<ui::EventTargeter>(new IdCheckingEventTargeter(2)));
 231   EXPECT_EQ(parent_r, targeter->FindTargetForEvent(root_target, &mouse2));
 232
 233   // Now install a targeter on the |child| that looks at the window id as well
 234   // as the bounds and makes sure the event reaches the target only if the id of
 235   // the window is equal to 1 (correct).
 236   ui::MouseEvent mouse3(ui::ET_MOUSE_MOVED, gfx::Point(8, 8), gfx::Point(8, 8),
 237                         ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
 238   child_r->SetEventTargeter(
 239       scoped_ptr<ui::EventTargeter>(new IdCheckingEventTargeter(1)));
 240   EXPECT_EQ(child_r, targeter->FindTargetForEvent(root_target, &mouse3));
 241
 242   // restore original WindowTargeter for |child|.
 243   child_r->SetEventTargeter(original_targeter.Pass());
 244
 245   // Target |grandchild| location.
 246   ui::MouseEvent second(ui::ET_MOUSE_MOVED, gfx::Point(12, 12),
 247                         gfx::Point(12, 12), ui::EventTimeForNow(), ui::EF_NONE,
 248                         ui::EF_NONE);
 249   EXPECT_EQ(grandchild_r, targeter->FindTargetForEvent(root_target, &second));
 250
 251   // Target |child| location.
 252   ui::MouseEvent third(ui::ET_MOUSE_MOVED, gfx::Point(8, 8), gfx::Point(8, 8),
 253                        ui::EventTimeForNow(), ui::EF_NONE, ui::EF_NONE);
 254   EXPECT_EQ(child_r, targeter->FindTargetForEvent(root_target, &third));
 255 }
 256
 257 class IgnoreWindowTargeter : public WindowTargeter {
 258  public:
 259   IgnoreWindowTargeter() {}
 260   ~IgnoreWindowTargeter() override {}
 261
 262  private:
 263   // WindowTargeter:
 264   bool SubtreeShouldBeExploredForEvent(Window* window,
 265                                        const ui::LocatedEvent& event) override {
 266     return false;
 267   }
 268 };
 269
 270 // Verifies that an EventTargeter installed on an EventTarget can dictate
 271 // whether the target itself can process an event.
 272 TEST_F(WindowTargeterTest, TargeterChecksOwningEventTarget) {
 273   test::TestWindowDelegate delegate;
 274   scoped_ptr<Window> child(CreateNormalWindow(1, root_window(), &delegate));
 275
 276   ui::EventTarget* root_target = root_window();
 277   ui::EventTargeter* targeter = root_target->GetEventTargeter();
 278
 279   ui::MouseEvent mouse(ui::ET_MOUSE_MOVED, gfx::Point(10, 10),
 280                        gfx::Point(10, 10), ui::EventTimeForNow(), ui::EF_NONE,
 281                        ui::EF_NONE);
 282   EXPECT_EQ(child.get(), targeter->FindTargetForEvent(root_target, &mouse));
 283
 284   // Install an event targeter on |child| which always prevents the target from
 285   // receiving event.
 286   child->SetEventTargeter(
 287       scoped_ptr<ui::EventTargeter>(new IgnoreWindowTargeter()));
 288
 289   ui::MouseEvent mouse2(ui::ET_MOUSE_MOVED, gfx::Point(10, 10),
 290                         gfx::Point(10, 10), ui::EventTimeForNow(), ui::EF_NONE,
 291                         ui::EF_NONE);
 292   EXPECT_EQ(root_window(), targeter->FindTargetForEvent(root_target, &mouse2));
 293 }
 294
 295 }  // namespace aura