ui/aura/demo/demo_main.cc

   1 // Copyright (c) 2012 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 "base/at_exit.h"
   6 #include "base/command_line.h"
   7 #include "base/i18n/icu_util.h"
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/message_loop/message_loop.h"
  10 #include "base/power_monitor/power_monitor.h"
  11 #include "base/power_monitor/power_monitor_device_source.h"
  12 #include "third_party/skia/include/core/SkXfermode.h"
  13 #include "ui/aura/client/default_capture_client.h"
  14 #include "ui/aura/client/window_tree_client.h"
  15 #include "ui/aura/env.h"
  16 #include "ui/aura/test/test_focus_client.h"
  17 #include "ui/aura/test/test_screen.h"
  18 #include "ui/aura/window.h"
  19 #include "ui/aura/window_delegate.h"
  20 #include "ui/aura/window_tree_host.h"
  21 #include "ui/base/hit_test.h"
  22 #include "ui/compositor/test/in_process_context_factory.h"
  23 #include "ui/events/event.h"
  24 #include "ui/gfx/canvas.h"
  25 #include "ui/gfx/geometry/rect.h"
  26 #include "ui/gfx/skia_util.h"
  27 #include "ui/gl/gl_surface.h"
  28
  29 #if defined(USE_X11)
  30 #include "ui/gfx/x/x11_connection.h"
  31 #endif
  32
  33 #if defined(OS_WIN)
  34 #include "ui/gfx/win/dpi.h"
  35 #endif
  36
  37 namespace {
  38
  39 // Trivial WindowDelegate implementation that draws a colored background.
  40 class DemoWindowDelegate : public aura::WindowDelegate {
  41  public:
  42   explicit DemoWindowDelegate(SkColor color) : color_(color) {}
  43
  44   // Overridden from WindowDelegate:
  45   gfx::Size GetMinimumSize() const override { return gfx::Size(); }
  46
  47   gfx::Size GetMaximumSize() const override { return gfx::Size(); }
  48
  49   void OnBoundsChanged(const gfx::Rect& old_bounds,
  50                        const gfx::Rect& new_bounds) override {}
  51   ui::TextInputClient* GetFocusedTextInputClient() override { return nullptr; }
  52   gfx::NativeCursor GetCursor(const gfx::Point& point) override {
  53     return gfx::kNullCursor;
  54   }
  55   int GetNonClientComponent(const gfx::Point& point) const override {
  56     return HTCAPTION;
  57   }
  58   bool ShouldDescendIntoChildForEventHandling(
  59       aura::Window* child,
  60       const gfx::Point& location) override {
  61     return true;
  62   }
  63   bool CanFocus() override { return true; }
  64   void OnCaptureLost() override {}
  65   void OnPaint(gfx::Canvas* canvas) override {
  66     canvas->DrawColor(color_, SkXfermode::kSrc_Mode);
  67     gfx::Rect r;
  68     canvas->GetClipBounds(&r);
  69     // Fill with a non-solid color so that the compositor will exercise its
  70     // texture upload path.
  71     while (!r.IsEmpty()) {
  72       r.Inset(2, 2);
  73       canvas->FillRect(r, color_, SkXfermode::kXor_Mode);
  74     }
  75   }
  76   void OnDeviceScaleFactorChanged(float device_scale_factor) override {}
  77   void OnWindowDestroying(aura::Window* window) override {}
  78   void OnWindowDestroyed(aura::Window* window) override {}
  79   void OnWindowTargetVisibilityChanged(bool visible) override {}
  80   bool HasHitTestMask() const override { return false; }
  81   void GetHitTestMask(gfx::Path* mask) const override {}
  82
  83  private:
  84   SkColor color_;
  85
  86   DISALLOW_COPY_AND_ASSIGN(DemoWindowDelegate);
  87 };
  88
  89 class DemoWindowTreeClient : public aura::client::WindowTreeClient {
  90  public:
  91   explicit DemoWindowTreeClient(aura::Window* window) : window_(window) {
  92     aura::client::SetWindowTreeClient(window_, this);
  93   }
  94
  95   ~DemoWindowTreeClient() override {
  96     aura::client::SetWindowTreeClient(window_, nullptr);
  97   }
  98
  99   // Overridden from aura::client::WindowTreeClient:
 100   aura::Window* GetDefaultParent(aura::Window* context,
 101                                  aura::Window* window,
 102                                  const gfx::Rect& bounds) override {
 103     if (!capture_client_) {
 104       capture_client_.reset(
 105           new aura::client::DefaultCaptureClient(window_->GetRootWindow()));
 106     }
 107     return window_;
 108   }
 109
 110  private:
 111   aura::Window* window_;
 112
 113   scoped_ptr<aura::client::DefaultCaptureClient> capture_client_;
 114
 115   DISALLOW_COPY_AND_ASSIGN(DemoWindowTreeClient);
 116 };
 117
 118 int DemoMain() {
 119 #if defined(USE_X11)
 120   // This demo uses InProcessContextFactory which uses X on a separate Gpu
 121   // thread.
 122   gfx::InitializeThreadedX11();
 123 #endif
 124
 125   gfx::GLSurface::InitializeOneOff();
 126
 127 #if defined(OS_WIN)
 128   gfx::InitDeviceScaleFactor(1.0f);
 129 #endif
 130
 131   // The ContextFactory must exist before any Compositors are created.
 132   bool context_factory_for_test = false;
 133   scoped_ptr<ui::InProcessContextFactory> context_factory(
 134       new ui::InProcessContextFactory(context_factory_for_test, nullptr));
 135   context_factory->set_use_test_surface(false);
 136
 137   // Create the message-loop here before creating the root window.
 138   base::MessageLoopForUI message_loop;
 139
 140   base::PowerMonitor power_monitor(make_scoped_ptr(
 141       new base::PowerMonitorDeviceSource));
 142
 143   aura::Env::CreateInstance(true);
 144   aura::Env::GetInstance()->set_context_factory(context_factory.get());
 145   scoped_ptr<aura::TestScreen> test_screen(
 146       aura::TestScreen::Create(gfx::Size()));
 147   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, test_screen.get());
 148   scoped_ptr<aura::WindowTreeHost> host(
 149       test_screen->CreateHostForPrimaryDisplay());
 150   scoped_ptr<DemoWindowTreeClient> window_tree_client(
 151       new DemoWindowTreeClient(host->window()));
 152   aura::test::TestFocusClient focus_client;
 153   aura::client::SetFocusClient(host->window(), &focus_client);
 154
 155   // Create a hierarchy of test windows.
 156   DemoWindowDelegate window_delegate1(SK_ColorBLUE);
 157   aura::Window window1(&window_delegate1);
 158   window1.set_id(1);
 159   window1.Init(aura::WINDOW_LAYER_TEXTURED);
 160   window1.SetBounds(gfx::Rect(100, 100, 400, 400));
 161   window1.Show();
 162   aura::client::ParentWindowWithContext(&window1, host->window(), gfx::Rect());
 163
 164   DemoWindowDelegate window_delegate2(SK_ColorRED);
 165   aura::Window window2(&window_delegate2);
 166   window2.set_id(2);
 167   window2.Init(aura::WINDOW_LAYER_TEXTURED);
 168   window2.SetBounds(gfx::Rect(200, 200, 350, 350));
 169   window2.Show();
 170   aura::client::ParentWindowWithContext(&window2, host->window(), gfx::Rect());
 171
 172   DemoWindowDelegate window_delegate3(SK_ColorGREEN);
 173   aura::Window window3(&window_delegate3);
 174   window3.set_id(3);
 175   window3.Init(aura::WINDOW_LAYER_TEXTURED);
 176   window3.SetBounds(gfx::Rect(10, 10, 50, 50));
 177   window3.Show();
 178   window2.AddChild(&window3);
 179
 180   host->Show();
 181   base::MessageLoopForUI::current()->Run();
 182
 183   return 0;
 184 }
 185
 186 }  // namespace
 187
 188 int main(int argc, char** argv) {
 189   base::CommandLine::Init(argc, argv);
 190
 191   // The exit manager is in charge of calling the dtors of singleton objects.
 192   base::AtExitManager exit_manager;
 193
 194   base::i18n::InitializeICU();
 195
 196   return DemoMain();
 197 }