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view_unittest.cc
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// 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 <map>
#include "base/memory/scoped_ptr.h"
#include "base/rand_util.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "ui/base/accelerators/accelerator.h"
#include "ui/base/clipboard/clipboard.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/compositor/compositor.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/layer_animator.h"
#include "ui/compositor/test/draw_waiter_for_test.h"
#include "ui/events/event.h"
#include "ui/events/keycodes/keyboard_codes.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/path.h"
#include "ui/gfx/transform.h"
#include "ui/strings/grit/ui_strings.h"
#include "ui/views/background.h"
#include "ui/views/controls/native/native_view_host.h"
#include "ui/views/controls/scroll_view.h"
#include "ui/views/controls/textfield/textfield.h"
#include "ui/views/focus/view_storage.h"
#include "ui/views/test/views_test_base.h"
#include "ui/views/view.h"
#include "ui/views/views_delegate.h"
#include "ui/views/widget/native_widget.h"
#include "ui/views/widget/root_view.h"
#include "ui/views/window/dialog_client_view.h"
#include "ui/views/window/dialog_delegate.h"
using base::ASCIIToUTF16;
namespace {
// Returns true if |ancestor| is an ancestor of |layer|.
bool LayerIsAncestor(const ui::Layer* ancestor, const ui::Layer* layer) {
while (layer && layer != ancestor)
layer = layer->parent();
return layer == ancestor;
}
// Convenience functions for walking a View tree.
const views::View* FirstView(const views::View* view) {
const views::View* v = view;
while (v->has_children())
v = v->child_at(0);
return v;
}
const views::View* NextView(const views::View* view) {
const views::View* v = view;
const views::View* parent = v->parent();
if (!parent)
return NULL;
int next = parent->GetIndexOf(v) + 1;
if (next != parent->child_count())
return FirstView(parent->child_at(next));
return parent;
}
// Convenience functions for walking a Layer tree.
const ui::Layer* FirstLayer(const ui::Layer* layer) {
const ui::Layer* l = layer;
while (l->children().size() > 0)
l = l->children()[0];
return l;
}
const ui::Layer* NextLayer(const ui::Layer* layer) {
const ui::Layer* parent = layer->parent();
if (!parent)
return NULL;
const std::vector<ui::Layer*> children = parent->children();
size_t index;
for (index = 0; index < children.size(); index++) {
if (children[index] == layer)
break;
}
size_t next = index + 1;
if (next < children.size())
return FirstLayer(children[next]);
return parent;
}
// Given the root nodes of a View tree and a Layer tree, makes sure the two
// trees are in sync.
bool ViewAndLayerTreeAreConsistent(const views::View* view,
const ui::Layer* layer) {
const views::View* v = FirstView(view);
const ui::Layer* l = FirstLayer(layer);
while (v && l) {
// Find the view with a layer.
while (v && !v->layer())
v = NextView(v);
EXPECT_TRUE(v);
if (!v)
return false;
// Check if the View tree and the Layer tree are in sync.
EXPECT_EQ(l, v->layer());
if (v->layer() != l)
return false;
// Check if the visibility states of the View and the Layer are in sync.
EXPECT_EQ(l->IsDrawn(), v->IsDrawn());
if (v->IsDrawn() != l->IsDrawn()) {
for (const views::View* vv = v; vv; vv = vv->parent())
LOG(ERROR) << "V: " << vv << " " << vv->visible() << " "
<< vv->IsDrawn() << " " << vv->layer();
for (const ui::Layer* ll = l; ll; ll = ll->parent())
LOG(ERROR) << "L: " << ll << " " << ll->IsDrawn();
return false;
}
// Check if the size of the View and the Layer are in sync.
EXPECT_EQ(l->bounds(), v->bounds());
if (v->bounds() != l->bounds())
return false;
if (v == view || l == layer)
return v == view && l == layer;
v = NextView(v);
l = NextLayer(l);
}
return false;
}
// Constructs a View tree with the specified depth.
void ConstructTree(views::View* view, int depth) {
if (depth == 0)
return;
int count = base::RandInt(1, 5);
for (int i = 0; i < count; i++) {
views::View* v = new views::View;
view->AddChildView(v);
if (base::RandDouble() > 0.5)
v->SetPaintToLayer(true);
if (base::RandDouble() < 0.2)
v->SetVisible(false);
ConstructTree(v, depth - 1);
}
}
void ScrambleTree(views::View* view) {
int count = view->child_count();
if (count == 0)
return;
for (int i = 0; i < count; i++) {
ScrambleTree(view->child_at(i));
}
if (count > 1) {
int a = base::RandInt(0, count - 1);
int b = base::RandInt(0, count - 1);
views::View* view_a = view->child_at(a);
views::View* view_b = view->child_at(b);
view->ReorderChildView(view_a, b);
view->ReorderChildView(view_b, a);
}
if (!view->layer() && base::RandDouble() < 0.1)
view->SetPaintToLayer(true);
if (base::RandDouble() < 0.1)
view->SetVisible(!view->visible());
}
} // namespace
namespace views {
typedef ViewsTestBase ViewTest;
// A derived class for testing purpose.
class TestView : public View {
public:
TestView()
: View(),
delete_on_pressed_(false),
native_theme_(NULL),
can_process_events_within_subtree_(true) {}
~TestView() override {}
// Reset all test state
void Reset() {
did_change_bounds_ = false;
last_mouse_event_type_ = 0;
location_.SetPoint(0, 0);
received_mouse_enter_ = false;
received_mouse_exit_ = false;
last_clip_.setEmpty();
accelerator_count_map_.clear();
can_process_events_within_subtree_ = true;
}
// Exposed as public for testing.
void DoFocus() {
views::View::Focus();
}
void DoBlur() {
views::View::Blur();
}
bool focusable() const { return View::focusable(); }
void set_can_process_events_within_subtree(bool can_process) {
can_process_events_within_subtree_ = can_process;
}
bool CanProcessEventsWithinSubtree() const override {
return can_process_events_within_subtree_;
}
void OnBoundsChanged(const gfx::Rect& previous_bounds) override;
bool OnMousePressed(const ui::MouseEvent& event) override;
bool OnMouseDragged(const ui::MouseEvent& event) override;
void OnMouseReleased(const ui::MouseEvent& event) override;
void OnMouseEntered(const ui::MouseEvent& event) override;
void OnMouseExited(const ui::MouseEvent& event) override;
void Paint(gfx::Canvas* canvas, const CullSet& cull_set) override;
void SchedulePaintInRect(const gfx::Rect& rect) override;
bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
void OnNativeThemeChanged(const ui::NativeTheme* native_theme) override;
// OnBoundsChanged.
bool did_change_bounds_;
gfx::Rect new_bounds_;
// MouseEvent.
int last_mouse_event_type_;
gfx::Point location_;
bool received_mouse_enter_;
bool received_mouse_exit_;
bool delete_on_pressed_;
// Painting.
std::vector<gfx::Rect> scheduled_paint_rects_;
// Painting.
SkRect last_clip_;
// Accelerators.
std::map<ui::Accelerator, int> accelerator_count_map_;
// Native theme.
const ui::NativeTheme* native_theme_;
// Value to return from CanProcessEventsWithinSubtree().
bool can_process_events_within_subtree_;
};
////////////////////////////////////////////////////////////////////////////////
// OnBoundsChanged
////////////////////////////////////////////////////////////////////////////////
void TestView::OnBoundsChanged(const gfx::Rect& previous_bounds) {
did_change_bounds_ = true;
new_bounds_ = bounds();
}
TEST_F(ViewTest, OnBoundsChanged) {
TestView v;
gfx::Rect prev_rect(0, 0, 200, 200);
gfx::Rect new_rect(100, 100, 250, 250);
v.SetBoundsRect(prev_rect);
v.Reset();
v.SetBoundsRect(new_rect);
EXPECT_TRUE(v.did_change_bounds_);
EXPECT_EQ(v.new_bounds_, new_rect);
EXPECT_EQ(v.bounds(), new_rect);
}
////////////////////////////////////////////////////////////////////////////////
// MouseEvent
////////////////////////////////////////////////////////////////////////////////
bool TestView::OnMousePressed(const ui::MouseEvent& event) {
last_mouse_event_type_ = event.type();
location_.SetPoint(event.x(), event.y());
if (delete_on_pressed_)
delete this;
return true;
}
bool TestView::OnMouseDragged(const ui::MouseEvent& event) {
last_mouse_event_type_ = event.type();
location_.SetPoint(event.x(), event.y());
return true;
}
void TestView::OnMouseReleased(const ui::MouseEvent& event) {
last_mouse_event_type_ = event.type();
location_.SetPoint(event.x(), event.y());
}
void TestView::OnMouseEntered(const ui::MouseEvent& event) {
received_mouse_enter_ = true;
}
void TestView::OnMouseExited(const ui::MouseEvent& event) {
received_mouse_exit_ = true;
}
TEST_F(ViewTest, MouseEvent) {
TestView* v1 = new TestView();
v1->SetBoundsRect(gfx::Rect(0, 0, 300, 300));
TestView* v2 = new TestView();
v2->SetBoundsRect(gfx::Rect(100, 100, 100, 100));
scoped_ptr<Widget> widget(new Widget);
Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_POPUP);
params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
params.bounds = gfx::Rect(50, 50, 650, 650);
widget->Init(params);
internal::RootView* root =
static_cast<internal::RootView*>(widget->GetRootView());
root->AddChildView(v1);
v1->AddChildView(v2);
v1->Reset();
v2->Reset();
gfx::Point p1(110, 120);
ui::MouseEvent pressed(ui::ET_MOUSE_PRESSED, p1, p1,
ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON);
root->OnMousePressed(pressed);
EXPECT_EQ(v2->last_mouse_event_type_, ui::ET_MOUSE_PRESSED);
EXPECT_EQ(v2->location_.x(), 10);
EXPECT_EQ(v2->location_.y(), 20);
// Make sure v1 did not receive the event
EXPECT_EQ(v1->last_mouse_event_type_, 0);
// Drag event out of bounds. Should still go to v2
v1->Reset();
v2->Reset();
gfx::Point p2(50, 40);
ui::MouseEvent dragged(ui::ET_MOUSE_DRAGGED, p2, p2,
ui::EF_LEFT_MOUSE_BUTTON, 0);
root->OnMouseDragged(dragged);
EXPECT_EQ(v2->last_mouse_event_type_, ui::ET_MOUSE_DRAGGED);
EXPECT_EQ(v2->location_.x(), -50);
EXPECT_EQ(v2->location_.y(), -60);
// Make sure v1 did not receive the event
EXPECT_EQ(v1->last_mouse_event_type_, 0);
// Releasted event out of bounds. Should still go to v2
v1->Reset();
v2->Reset();
ui::MouseEvent released(ui::ET_MOUSE_RELEASED, gfx::Point(), gfx::Point(), 0,
0);
root->OnMouseDragged(released);
EXPECT_EQ(v2->last_mouse_event_type_, ui::ET_MOUSE_RELEASED);
EXPECT_EQ(v2->location_.x(), -100);
EXPECT_EQ(v2->location_.y(), -100);
// Make sure v1 did not receive the event
EXPECT_EQ(v1->last_mouse_event_type_, 0);
widget->CloseNow();
}
// Confirm that a view can be deleted as part of processing a mouse press.
TEST_F(ViewTest, DeleteOnPressed) {
TestView* v1 = new TestView();
v1->SetBoundsRect(gfx::Rect(0, 0, 300, 300));
TestView* v2 = new TestView();
v2->SetBoundsRect(gfx::Rect(100, 100, 100, 100));
v1->Reset();
v2->Reset();
scoped_ptr<Widget> widget(new Widget);
Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_POPUP);
params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
params.bounds = gfx::Rect(50, 50, 650, 650);
widget->Init(params);
View* root = widget->GetRootView();
root->AddChildView(v1);
v1->AddChildView(v2);
v2->delete_on_pressed_ = true;
gfx::Point point(110, 120);
ui::MouseEvent pressed(ui::ET_MOUSE_PRESSED, point, point,
ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON);
root->OnMousePressed(pressed);
EXPECT_EQ(0, v1->child_count());
widget->CloseNow();
}
////////////////////////////////////////////////////////////////////////////////
// Painting
////////////////////////////////////////////////////////////////////////////////
void TestView::Paint(gfx::Canvas* canvas, const CullSet& cull_set) {
canvas->sk_canvas()->getClipBounds(&last_clip_);
}
void TestView::SchedulePaintInRect(const gfx::Rect& rect) {
scheduled_paint_rects_.push_back(rect);
View::SchedulePaintInRect(rect);
}
void CheckRect(const SkRect& check_rect, const SkRect& target_rect) {
EXPECT_EQ(target_rect.fLeft, check_rect.fLeft);
EXPECT_EQ(target_rect.fRight, check_rect.fRight);
EXPECT_EQ(target_rect.fTop, check_rect.fTop);
EXPECT_EQ(target_rect.fBottom, check_rect.fBottom);
}
TEST_F(ViewTest, RemoveNotification) {
ViewStorage* vs = ViewStorage::GetInstance();
Widget* widget = new Widget;
widget->Init(CreateParams(Widget::InitParams::TYPE_POPUP));
View* root_view = widget->GetRootView();
View* v1 = new View;
int s1 = vs->CreateStorageID();
vs->StoreView(s1, v1);
root_view->AddChildView(v1);
View* v11 = new View;
int s11 = vs->CreateStorageID();
vs->StoreView(s11, v11);
v1->AddChildView(v11);
View* v111 = new View;
int s111 = vs->CreateStorageID();
vs->StoreView(s111, v111);
v11->AddChildView(v111);
View* v112 = new View;
int s112 = vs->CreateStorageID();
vs->StoreView(s112, v112);
v11->AddChildView(v112);
View* v113 = new View;
int s113 = vs->CreateStorageID();
vs->StoreView(s113, v113);
v11->AddChildView(v113);
View* v1131 = new View;
int s1131 = vs->CreateStorageID();
vs->StoreView(s1131, v1131);
v113->AddChildView(v1131);
View* v12 = new View;
int s12 = vs->CreateStorageID();
vs->StoreView(s12, v12);
v1->AddChildView(v12);
View* v2 = new View;
int s2 = vs->CreateStorageID();
vs->StoreView(s2, v2);
root_view->AddChildView(v2);
View* v21 = new View;
int s21 = vs->CreateStorageID();
vs->StoreView(s21, v21);
v2->AddChildView(v21);
View* v211 = new View;
int s211 = vs->CreateStorageID();
vs->StoreView(s211, v211);
v21->AddChildView(v211);
size_t stored_views = vs->view_count();
// Try removing a leaf view.
v21->RemoveChildView(v211);
EXPECT_EQ(stored_views - 1, vs->view_count());
EXPECT_EQ(NULL, vs->RetrieveView(s211));
delete v211; // We won't use this one anymore.
// Now try removing a view with a hierarchy of depth 1.
v11->RemoveChildView(v113);
EXPECT_EQ(stored_views - 3, vs->view_count());
EXPECT_EQ(NULL, vs->RetrieveView(s113));
EXPECT_EQ(NULL, vs->RetrieveView(s1131));
delete v113; // We won't use this one anymore.
// Now remove even more.
root_view->RemoveChildView(v1);
EXPECT_EQ(NULL, vs->RetrieveView(s1));
EXPECT_EQ(NULL, vs->RetrieveView(s11));
EXPECT_EQ(NULL, vs->RetrieveView(s12));
EXPECT_EQ(NULL, vs->RetrieveView(s111));
EXPECT_EQ(NULL, vs->RetrieveView(s112));
// Put v1 back for more tests.
root_view->AddChildView(v1);
vs->StoreView(s1, v1);
// Synchronously closing the window deletes the view hierarchy, which should
// remove all its views from ViewStorage.
widget->CloseNow();
EXPECT_EQ(stored_views - 10, vs->view_count());
EXPECT_EQ(NULL, vs->RetrieveView(s1));
EXPECT_EQ(NULL, vs->RetrieveView(s12));
EXPECT_EQ(NULL, vs->RetrieveView(s11));
EXPECT_EQ(NULL, vs->RetrieveView(s12));
EXPECT_EQ(NULL, vs->RetrieveView(s21));
EXPECT_EQ(NULL, vs->RetrieveView(s111));
EXPECT_EQ(NULL, vs->RetrieveView(s112));
}
namespace {
void RotateCounterclockwise(gfx::Transform* transform) {
transform->matrix().set3x3(0, -1, 0,
1, 0, 0,
0, 0, 1);
}
void RotateClockwise(gfx::Transform* transform) {
transform->matrix().set3x3( 0, 1, 0,
-1, 0, 0,
0, 0, 1);
}
} // namespace
// Tests the correctness of the rect-based targeting algorithm implemented in
// View::GetEventHandlerForRect(). See http://goo.gl/3Jp2BD for a description
// of rect-based targeting.
TEST_F(ViewTest, GetEventHandlerForRect) {
Widget* widget = new Widget;
Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_POPUP);
widget->Init(params);
View* root_view = widget->GetRootView();
root_view->SetBoundsRect(gfx::Rect(0, 0, 500, 500));
// Have this hierarchy of views (the coordinates here are all in
// the root view's coordinate space):
// v1 (0, 0, 100, 100)
// v2 (150, 0, 250, 100)
// v3 (0, 200, 150, 100)
// v31 (10, 210, 80, 80)
// v32 (110, 210, 30, 80)
// v4 (300, 200, 100, 100)
// v41 (310, 210, 80, 80)
// v411 (370, 275, 10, 5)
// v5 (450, 197, 30, 36)
// v51 (450, 200, 30, 30)
// The coordinates used for SetBounds are in parent coordinates.
TestView* v1 = new TestView;
v1->SetBounds(0, 0, 100, 100);
root_view->AddChildView(v1);
TestView* v2 = new TestView;
v2->SetBounds(150, 0, 250, 100);
root_view->AddChildView(v2);
TestView* v3 = new TestView;
v3->SetBounds(0, 200, 150, 100);
root_view->AddChildView(v3);
TestView* v4 = new TestView;
v4->SetBounds(300, 200, 100, 100);
root_view->AddChildView(v4);
TestView* v31 = new TestView;
v31->SetBounds(10, 10, 80, 80);
v3->AddChildView(v31);
TestView* v32 = new TestView;
v32->SetBounds(110, 10, 30, 80);
v3->AddChildView(v32);
TestView* v41 = new TestView;
v41->SetBounds(10, 10, 80, 80);
v4->AddChildView(v41);
TestView* v411 = new TestView;
v411->SetBounds(60, 65, 10, 5);
v41->AddChildView(v411);
TestView* v5 = new TestView;
v5->SetBounds(450, 197, 30, 36);
root_view->AddChildView(v5);
TestView* v51 = new TestView;
v51->SetBounds(0, 3, 30, 30);
v5->AddChildView(v51);
// |touch_rect| does not intersect any descendant view of |root_view|.
gfx::Rect touch_rect(105, 105, 30, 45);
View* result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(root_view, result_view);
result_view = NULL;
// Covers |v1| by at least 60%.
touch_rect.SetRect(15, 15, 100, 100);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v1, result_view);
result_view = NULL;
// Intersects |v1| but does not cover it by at least 60%. The center
// of |touch_rect| is within |v1|.
touch_rect.SetRect(50, 50, 5, 10);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v1, result_view);
result_view = NULL;
// Intersects |v1| but does not cover it by at least 60%. The center
// of |touch_rect| is not within |v1|.
touch_rect.SetRect(95, 96, 21, 22);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(root_view, result_view);
result_view = NULL;
// Intersects |v1| and |v2|, but only covers |v2| by at least 60%.
touch_rect.SetRect(95, 10, 300, 120);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v2, result_view);
result_view = NULL;
// Covers both |v1| and |v2| by at least 60%, but the center point
// of |touch_rect| is closer to the center point of |v2|.
touch_rect.SetRect(20, 20, 400, 100);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v2, result_view);
result_view = NULL;
// Covers both |v1| and |v2| by at least 60%, but the center point
// of |touch_rect| is closer to the center point of |v1|.
touch_rect.SetRect(-700, -15, 1050, 110);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v1, result_view);
result_view = NULL;
// A mouse click within |v1| will target |v1|.
touch_rect.SetRect(15, 15, 1, 1);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v1, result_view);
result_view = NULL;
// Intersects |v3| and |v31| by at least 60% and the center point
// of |touch_rect| is closer to the center point of |v31|.
touch_rect.SetRect(0, 200, 110, 100);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v31, result_view);
result_view = NULL;
// Intersects |v3| and |v31|, but neither by at least 60%. The
// center point of |touch_rect| lies within |v31|.
touch_rect.SetRect(80, 280, 15, 15);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v31, result_view);
result_view = NULL;
// Covers |v3|, |v31|, and |v32| all by at least 60%, and the
// center point of |touch_rect| is closest to the center point
// of |v32|.
touch_rect.SetRect(0, 200, 200, 100);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v32, result_view);
result_view = NULL;
// Intersects all of |v3|, |v31|, and |v32|, but only covers
// |v31| and |v32| by at least 60%. The center point of
// |touch_rect| is closest to the center point of |v32|.
touch_rect.SetRect(30, 225, 180, 115);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v32, result_view);
result_view = NULL;
// A mouse click at the corner of |v3| will target |v3|.
touch_rect.SetRect(0, 200, 1, 1);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v3, result_view);
result_view = NULL;
// A mouse click within |v32| will target |v32|.
touch_rect.SetRect(112, 211, 1, 1);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v32, result_view);
result_view = NULL;
// Covers all of |v4|, |v41|, and |v411| by at least 60%.
// The center point of |touch_rect| is equally close to
// the center points of |v4| and |v41|.
touch_rect.SetRect(310, 210, 80, 80);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v41, result_view);
result_view = NULL;
// Intersects all of |v4|, |v41|, and |v411| but only covers
// |v411| by at least 60%.
touch_rect.SetRect(370, 275, 7, 5);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v411, result_view);
result_view = NULL;
// Intersects |v4| and |v41| but covers neither by at least 60%.
// The center point of |touch_rect| is equally close to the center
// points of |v4| and |v41|.
touch_rect.SetRect(345, 245, 7, 7);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v41, result_view);
result_view = NULL;
// Intersects all of |v4|, |v41|, and |v411| and covers none of
// them by at least 60%. The center point of |touch_rect| lies
// within |v411|.
touch_rect.SetRect(368, 272, 4, 6);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v411, result_view);
result_view = NULL;
// Intersects all of |v4|, |v41|, and |v411| and covers none of
// them by at least 60%. The center point of |touch_rect| lies
// within |v41|.
touch_rect.SetRect(365, 270, 7, 7);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v41, result_view);
result_view = NULL;
// Intersects all of |v4|, |v41|, and |v411| and covers none of
// them by at least 60%. The center point of |touch_rect| lies
// within |v4|.
touch_rect.SetRect(205, 275, 200, 2);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v4, result_view);
result_view = NULL;
// Intersects all of |v4|, |v41|, and |v411| but only covers
// |v41| by at least 60%.
touch_rect.SetRect(310, 210, 61, 66);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v41, result_view);
result_view = NULL;
// A mouse click within |v411| will target |v411|.
touch_rect.SetRect(372, 275, 1, 1);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v411, result_view);
result_view = NULL;
// A mouse click within |v41| will target |v41|.
touch_rect.SetRect(350, 215, 1, 1);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v41, result_view);
result_view = NULL;
// Covers |v3|, |v4|, and all of their descendants by at
// least 60%. The center point of |touch_rect| is closest
// to the center point of |v32|.
touch_rect.SetRect(0, 200, 400, 100);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v32, result_view);
result_view = NULL;
// Intersects all of |v2|, |v3|, |v32|, |v4|, |v41|, and |v411|.
// Covers |v2|, |v32|, |v4|, |v41|, and |v411| by at least 60%.
// The center point of |touch_rect| is closest to the center
// point of |root_view|.
touch_rect.SetRect(110, 15, 375, 450);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(root_view, result_view);
result_view = NULL;
// Covers all views (except |v5| and |v51|) by at least 60%. The
// center point of |touch_rect| is equally close to the center
// points of |v2| and |v32|. One is not a descendant of the other,
// so in this case the view selected is arbitrary (i.e.,
// it depends only on the ordering of nodes in the views
// hierarchy).
touch_rect.SetRect(0, 0, 400, 300);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v32, result_view);
result_view = NULL;
// Covers |v5| and |v51| by at least 60%, and the center point of
// the touch is located within both views. Since both views share
// the same center point, the child view should be selected.
touch_rect.SetRect(440, 190, 40, 40);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v51, result_view);
result_view = NULL;
// Covers |v5| and |v51| by at least 60%, but the center point of
// the touch is not located within either view. Since both views
// share the same center point, the child view should be selected.
touch_rect.SetRect(455, 187, 60, 60);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v51, result_view);
result_view = NULL;
// Covers neither |v5| nor |v51| by at least 60%, but the center
// of the touch is located within |v51|.
touch_rect.SetRect(450, 197, 10, 10);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v51, result_view);
result_view = NULL;
// Covers neither |v5| nor |v51| by at least 60% but intersects both.
// The center point is located outside of both views.
touch_rect.SetRect(433, 180, 24, 24);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(root_view, result_view);
result_view = NULL;
// Only intersects |v5| but does not cover it by at least 60%. The
// center point of the touch region is located within |v5|.
touch_rect.SetRect(449, 196, 3, 3);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v5, result_view);
result_view = NULL;
// A mouse click within |v5| (but not |v51|) should target |v5|.
touch_rect.SetRect(462, 199, 1, 1);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v5, result_view);
result_view = NULL;
// A mouse click |v5| and |v51| should target the child view.
touch_rect.SetRect(452, 226, 1, 1);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v51, result_view);
result_view = NULL;
// A mouse click on the center of |v5| and |v51| should target
// the child view.
touch_rect.SetRect(465, 215, 1, 1);
result_view = root_view->GetEventHandlerForRect(touch_rect);
EXPECT_EQ(v51, result_view);
result_view = NULL;
widget->CloseNow();
}
// Tests that GetEventHandlerForRect() and GetTooltipHandlerForPoint() behave
// as expected when different views in the view hierarchy return false
// when CanProcessEventsWithinSubtree() is called.
TEST_F(ViewTest, CanProcessEventsWithinSubtree) {
Widget* widget = new Widget;
Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_POPUP);
widget->Init(params);
View* root_view = widget->GetRootView();
root_view->SetBoundsRect(gfx::Rect(0, 0, 500, 500));
// Have this hierarchy of views (the coords here are in the coordinate
// space of the root view):
// v (0, 0, 100, 100)
// - v_child (0, 0, 20, 30)
// - v_grandchild (5, 5, 5, 15)
TestView* v = new TestView;
v->SetBounds(0, 0, 100, 100);
root_view->AddChildView(v);
v->set_notify_enter_exit_on_child(true);
TestView* v_child = new TestView;
v_child->SetBounds(0, 0, 20, 30);
v->AddChildView(v_child);
TestView* v_grandchild = new TestView;
v_grandchild->SetBounds(5, 5, 5, 15);
v_child->AddChildView(v_grandchild);
v->Reset();
v_child->Reset();
v_grandchild->Reset();
// Define rects and points within the views in the hierarchy.
gfx::Rect rect_in_v_grandchild(7, 7, 3, 3);
gfx::Point point_in_v_grandchild(rect_in_v_grandchild.origin());
gfx::Rect rect_in_v_child(12, 3, 5, 5);
gfx::Point point_in_v_child(rect_in_v_child.origin());
gfx::Rect rect_in_v(50, 50, 25, 30);
gfx::Point point_in_v(rect_in_v.origin());
// When all three views return true when CanProcessEventsWithinSubtree()
// is called, targeting should behave as expected.
View* result_view = root_view->GetEventHandlerForRect(rect_in_v_grandchild);
EXPECT_EQ(v_grandchild, result_view);
result_view = NULL;
result_view = root_view->GetTooltipHandlerForPoint(point_in_v_grandchild);
EXPECT_EQ(v_grandchild, result_view);
result_view = NULL;
result_view = root_view->GetEventHandlerForRect(rect_in_v_child);
EXPECT_EQ(v_child, result_view);
result_view = NULL;
result_view = root_view->GetTooltipHandlerForPoint(point_in_v_child);
EXPECT_EQ(v_child, result_view);
result_view = NULL;
result_view = root_view->GetEventHandlerForRect(rect_in_v);
EXPECT_EQ(v, result_view);
result_view = NULL;
result_view = root_view->GetTooltipHandlerForPoint(point_in_v);
EXPECT_EQ(v, result_view);
result_view = NULL;
// When |v_grandchild| returns false when CanProcessEventsWithinSubtree()
// is called, then |v_grandchild| cannot be returned as a target.
v_grandchild->set_can_process_events_within_subtree(false);
result_view = root_view->GetEventHandlerForRect(rect_in_v_grandchild);
EXPECT_EQ(v_child, result_view);
result_view = NULL;
result_view = root_view->GetTooltipHandlerForPoint(point_in_v_grandchild);
EXPECT_EQ(v_child, result_view);
result_view = NULL;
result_view = root_view->GetEventHandlerForRect(rect_in_v_child);
EXPECT_EQ(v_child, result_view);
result_view = NULL;
result_view = root_view->GetTooltipHandlerForPoint(point_in_v_child);
EXPECT_EQ(v_child, result_view);
result_view = NULL;
result_view = root_view->GetEventHandlerForRect(rect_in_v);
EXPECT_EQ(v, result_view);
result_view = NULL;
result_view = root_view->GetTooltipHandlerForPoint(point_in_v);
EXPECT_EQ(v, result_view);
// When |v_grandchild| returns false when CanProcessEventsWithinSubtree()
// is called, then NULL should be returned as a target if we call
// GetTooltipHandlerForPoint() with |v_grandchild| as the root of the
// views tree. Note that the location must be in the coordinate space
// of the root view (|v_grandchild| in this case), so use (1, 1).
result_view = v_grandchild;
result_view = v_grandchild->GetTooltipHandlerForPoint(gfx::Point(1, 1));
EXPECT_EQ(NULL, result_view);
result_view = NULL;
// When |v_child| returns false when CanProcessEventsWithinSubtree()
// is called, then neither |v_child| nor |v_grandchild| can be returned
// as a target (|v| should be returned as the target for each case).
v_grandchild->Reset();
v_child->set_can_process_events_within_subtree(false);
result_view = root_view->GetEventHandlerForRect(rect_in_v_grandchild);
EXPECT_EQ(v, result_view);
result_view = NULL;
result_view = root_view->GetTooltipHandlerForPoint(point_in_v_grandchild);
EXPECT_EQ(v, result_view);
result_view = NULL;
result_view = root_view->GetEventHandlerForRect(rect_in_v_child);
EXPECT_EQ(v, result_view);
result_view = NULL;
result_view = root_view->GetTooltipHandlerForPoint(point_in_v_child);
EXPECT_EQ(v, result_view);
result_view = NULL;
result_view = root_view->GetEventHandlerForRect(rect_in_v);
EXPECT_EQ(v, result_view);
result_view = NULL;
result_view = root_view->GetTooltipHandlerForPoint(point_in_v);
EXPECT_EQ(v, result_view);
result_view = NULL;
// When |v| returns false when CanProcessEventsWithinSubtree()
// is called, then none of |v|, |v_child|, and |v_grandchild| can be returned
// as a target (|root_view| should be returned as the target for each case).
v_child->Reset();
v->set_can_process_events_within_subtree(false);
result_view = root_view->GetEventHandlerForRect(rect_in_v_grandchild);
EXPECT_EQ(root_view, result_view);
result_view = NULL;
result_view = root_view->GetTooltipHandlerForPoint(point_in_v_grandchild);
EXPECT_EQ(root_view, result_view);
result_view = NULL;
result_view = root_view->GetEventHandlerForRect(rect_in_v_child);
EXPECT_EQ(root_view, result_view);
result_view = NULL;
result_view = root_view->GetTooltipHandlerForPoint(point_in_v_child);
EXPECT_EQ(root_view, result_view);
result_view = NULL;
result_view = root_view->GetEventHandlerForRect(rect_in_v);
EXPECT_EQ(root_view, result_view);
result_view = NULL;
result_view = root_view->GetTooltipHandlerForPoint(point_in_v);