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// Copyright 2016 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 "headless/lib/browser/headless_screen.h"
#include <stdint.h>
#include "base/logging.h"
#include "ui/aura/env.h"
#include "ui/aura/window.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/aura/window_tree_host.h"
#include "ui/base/ime/input_method.h"
#include "ui/gfx/geometry/rect_conversions.h"
#include "ui/gfx/geometry/size_conversions.h"
#include "ui/gfx/native_widget_types.h"
namespace headless {
namespace {
bool IsRotationPortrait(display::Display::Rotation rotation) {
return rotation == display::Display::ROTATE_90 ||
rotation == display::Display::ROTATE_270;
}
} // namespace
// static
HeadlessScreen* HeadlessScreen::Create(const gfx::Size& size) {
return new HeadlessScreen(gfx::Rect(size));
}
HeadlessScreen::~HeadlessScreen() {}
aura::WindowTreeHost* HeadlessScreen::CreateHostForPrimaryDisplay() {
DCHECK(!host_);
host_ = aura::WindowTreeHost::Create(
gfx::Rect(GetPrimaryDisplay().GetSizeInPixel()));
// Some tests don't correctly manage window focus/activation states.
// Makes sure InputMethod is default focused so that IME basics can work.
host_->GetInputMethod()->OnFocus();
host_->window()->AddObserver(this);
host_->InitHost();
host_->window()->Show();
return host_;
}
void HeadlessScreen::SetDeviceScaleFactor(float device_scale_factor) {
display::Display display(GetPrimaryDisplay());
gfx::Rect bounds_in_pixel(display.GetSizeInPixel());
display.SetScaleAndBounds(device_scale_factor, bounds_in_pixel);
display_list().UpdateDisplay(display);
}
void HeadlessScreen::SetDisplayRotation(display::Display::Rotation rotation) {
display::Display display(GetPrimaryDisplay());
gfx::Rect bounds_in_pixel(display.GetSizeInPixel());
gfx::Rect new_bounds(bounds_in_pixel);
if (IsRotationPortrait(rotation) != IsRotationPortrait(display.rotation())) {
new_bounds.set_width(bounds_in_pixel.height());
new_bounds.set_height(bounds_in_pixel.width());
}
display.set_rotation(rotation);
display.SetScaleAndBounds(display.device_scale_factor(), new_bounds);
display_list().UpdateDisplay(display);
host_->SetRootTransform(GetRotationTransform() * GetUIScaleTransform());
}
void HeadlessScreen::SetUIScale(float ui_scale) {
ui_scale_ = ui_scale;
display::Display display(GetPrimaryDisplay());
gfx::Rect bounds_in_pixel(display.GetSizeInPixel());
gfx::Rect new_bounds = gfx::ToNearestRect(
gfx::ScaleRect(gfx::RectF(bounds_in_pixel), 1.0f / ui_scale));
display.SetScaleAndBounds(display.device_scale_factor(), new_bounds);
display_list().UpdateDisplay(display);
host_->SetRootTransform(GetRotationTransform() * GetUIScaleTransform());
}
void HeadlessScreen::SetWorkAreaInsets(const gfx::Insets& insets) {
display::Display display(GetPrimaryDisplay());
display.UpdateWorkAreaFromInsets(insets);
display_list().UpdateDisplay(display);
}
gfx::Transform HeadlessScreen::GetRotationTransform() const {
gfx::Transform rotate;
display::Display display(GetPrimaryDisplay());
switch (display.rotation()) {
case display::Display::ROTATE_0:
break;
case display::Display::ROTATE_90:
rotate.Translate(display.bounds().height(), 0);
rotate.Rotate(90);
break;
case display::Display::ROTATE_270:
rotate.Translate(0, display.bounds().width());
rotate.Rotate(270);
break;
case display::Display::ROTATE_180:
rotate.Translate(display.bounds().width(), display.bounds().height());
rotate.Rotate(180);
break;
}
return rotate;
}
gfx::Transform HeadlessScreen::GetUIScaleTransform() const {
gfx::Transform ui_scale;
ui_scale.Scale(1.0f / ui_scale_, 1.0f / ui_scale_);
return ui_scale;
}
void HeadlessScreen::OnWindowBoundsChanged(aura::Window* window,
const gfx::Rect& old_bounds,
const gfx::Rect& new_bounds) {
DCHECK_EQ(host_->window(), window);
display::Display display(GetPrimaryDisplay());
display.SetSize(gfx::ScaleToFlooredSize(new_bounds.size(),
display.device_scale_factor()));
display_list().UpdateDisplay(display);
}
void HeadlessScreen::OnWindowDestroying(aura::Window* window) {
if (host_->window() == window)
host_ = NULL;
}
gfx::Point HeadlessScreen::GetCursorScreenPoint() {
return aura::Env::GetInstance()->last_mouse_location();
}
bool HeadlessScreen::IsWindowUnderCursor(gfx::NativeWindow window) {
return GetWindowAtScreenPoint(GetCursorScreenPoint()) == window;
}
gfx::NativeWindow HeadlessScreen::GetWindowAtScreenPoint(
const gfx::Point& point) {
if (!host_ || !host_->window())
return nullptr;
return host_->window()->GetTopWindowContainingPoint(point);
}
display::Display HeadlessScreen::GetDisplayNearestWindow(
gfx::NativeWindow window) const {
return GetPrimaryDisplay();
}
HeadlessScreen::HeadlessScreen(const gfx::Rect& screen_bounds)
: host_(NULL), ui_scale_(1.0f) {
static int64_t synthesized_display_id = 2000;
display::Display display(synthesized_display_id++);
display.SetScaleAndBounds(1.0f, screen_bounds);
ProcessDisplayChanged(display, true /* is_primary */);
}
} // namespace headless
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