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/paint_recorder.h"
  23 #include "ui/compositor/test/in_process_context_factory.h"
  24 #include "ui/events/event.h"
  25 #include "ui/gfx/canvas.h"
  26 #include "ui/gfx/geometry/rect.h"
  27 #include "ui/gfx/skia_util.h"
  28 #include "ui/gl/gl_surface.h"
  29
  30 #if defined(USE_X11)
  31 #include "ui/gfx/x/x11_connection.h"
  32 #endif
  33
  34 #if defined(OS_WIN)
  35 #include "ui/gfx/win/dpi.h"
  36 #endif
  37
  38 namespace {
  39
  40 // Trivial WindowDelegate implementation that draws a colored background.
  41 class DemoWindowDelegate : public aura::WindowDelegate {
  42  public:
  43   explicit DemoWindowDelegate(SkColor color) : color_(color) {}
  44
  45   // Overridden from WindowDelegate:
  46   gfx::Size GetMinimumSize() const override { return gfx::Size(); }
  47
  48   gfx::Size GetMaximumSize() const override { return gfx::Size(); }
  49
  50   void OnBoundsChanged(const gfx::Rect& old_bounds,
  51                        const gfx::Rect& new_bounds) override {
  52     window_bounds_ = new_bounds;
  53   }
  54   gfx::NativeCursor GetCursor(const gfx::Point& point) override {
  55     return gfx::kNullCursor;
  56   }
  57   int GetNonClientComponent(const gfx::Point& point) const override {
  58     return HTCAPTION;
  59   }
  60   bool ShouldDescendIntoChildForEventHandling(
  61       aura::Window* child,
  62       const gfx::Point& location) override {
  63     return true;
  64   }
  65   bool CanFocus() override { return true; }
  66   void OnCaptureLost() override {}
  67   void OnPaint(const ui::PaintContext& context) override {
  68     ui::PaintRecorder recorder(context, window_bounds_.size());
  69     recorder.canvas()->DrawColor(color_, SkXfermode::kSrc_Mode);
  70     gfx::Rect r;
  71     recorder.canvas()->GetClipBounds(&r);
  72     // Fill with a non-solid color so that the compositor will exercise its
  73     // texture upload path.
  74     while (!r.IsEmpty()) {
  75       r.Inset(2, 2);
  76       recorder.canvas()->FillRect(r, color_, SkXfermode::kXor_Mode);
  77     }
  78   }
  79   void OnDeviceScaleFactorChanged(float device_scale_factor) override {}
  80   void OnWindowDestroying(aura::Window* window) override {}
  81   void OnWindowDestroyed(aura::Window* window) override {}
  82   void OnWindowTargetVisibilityChanged(bool visible) override {}
  83   bool HasHitTestMask() const override { return false; }
  84   void GetHitTestMask(gfx::Path* mask) const override {}
  85
  86  private:
  87   SkColor color_;
  88   gfx::Rect window_bounds_;
  89
  90   DISALLOW_COPY_AND_ASSIGN(DemoWindowDelegate);
  91 };
  92
  93 class DemoWindowTreeClient : public aura::client::WindowTreeClient {
  94  public:
  95   explicit DemoWindowTreeClient(aura::Window* window) : window_(window) {
  96     aura::client::SetWindowTreeClient(window_, this);
  97   }
  98
  99   ~DemoWindowTreeClient() override {
 100     aura::client::SetWindowTreeClient(window_, nullptr);
 101   }
 102
 103   // Overridden from aura::client::WindowTreeClient:
 104   aura::Window* GetDefaultParent(aura::Window* context,
 105                                  aura::Window* window,
 106                                  const gfx::Rect& bounds) override {
 107     if (!capture_client_) {
 108       capture_client_.reset(
 109           new aura::client::DefaultCaptureClient(window_->GetRootWindow()));
 110     }
 111     return window_;
 112   }
 113
 114  private:
 115   aura::Window* window_;
 116
 117   scoped_ptr<aura::client::DefaultCaptureClient> capture_client_;
 118
 119   DISALLOW_COPY_AND_ASSIGN(DemoWindowTreeClient);
 120 };
 121
 122 int DemoMain() {
 123 #if defined(USE_X11)
 124   // This demo uses InProcessContextFactory which uses X on a separate Gpu
 125   // thread.
 126   gfx::InitializeThreadedX11();
 127 #endif
 128
 129   gfx::GLSurface::InitializeOneOff();
 130
 131 #if defined(OS_WIN)
 132   gfx::InitDeviceScaleFactor(1.0f);
 133 #endif
 134
 135   // The ContextFactory must exist before any Compositors are created.
 136   bool context_factory_for_test = false;
 137   scoped_ptr<ui::InProcessContextFactory> context_factory(
 138       new ui::InProcessContextFactory(context_factory_for_test, nullptr));
 139   context_factory->set_use_test_surface(false);
 140
 141   // Create the message-loop here before creating the root window.
 142   base::MessageLoopForUI message_loop;
 143
 144   base::PowerMonitor power_monitor(make_scoped_ptr(
 145       new base::PowerMonitorDeviceSource));
 146
 147   aura::Env::CreateInstance(true);
 148   aura::Env::GetInstance()->set_context_factory(context_factory.get());
 149   scoped_ptr<aura::TestScreen> test_screen(
 150       aura::TestScreen::Create(gfx::Size()));
 151   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, test_screen.get());
 152   scoped_ptr<aura::WindowTreeHost> host(
 153       test_screen->CreateHostForPrimaryDisplay());
 154   scoped_ptr<DemoWindowTreeClient> window_tree_client(
 155       new DemoWindowTreeClient(host->window()));
 156   aura::test::TestFocusClient focus_client;
 157   aura::client::SetFocusClient(host->window(), &focus_client);
 158
 159   // Create a hierarchy of test windows.
 160   gfx::Rect window1_bounds(100, 100, 400, 400);
 161   DemoWindowDelegate window_delegate1(SK_ColorBLUE);
 162   aura::Window window1(&window_delegate1);
 163   window1.set_id(1);
 164   window1.Init(ui::LAYER_TEXTURED);
 165   window1.SetBounds(window1_bounds);
 166   window1.Show();
 167   aura::client::ParentWindowWithContext(&window1, host->window(), gfx::Rect());
 168
 169   gfx::Rect window2_bounds(200, 200, 350, 350);
 170   DemoWindowDelegate window_delegate2(SK_ColorRED);
 171   aura::Window window2(&window_delegate2);
 172   window2.set_id(2);
 173   window2.Init(ui::LAYER_TEXTURED);
 174   window2.SetBounds(window2_bounds);
 175   window2.Show();
 176   aura::client::ParentWindowWithContext(&window2, host->window(), gfx::Rect());
 177
 178   gfx::Rect window3_bounds(10, 10, 50, 50);
 179   DemoWindowDelegate window_delegate3(SK_ColorGREEN);
 180   aura::Window window3(&window_delegate3);
 181   window3.set_id(3);
 182   window3.Init(ui::LAYER_TEXTURED);
 183   window3.SetBounds(window3_bounds);
 184   window3.Show();
 185   window2.AddChild(&window3);
 186
 187   host->Show();
 188   base::MessageLoopForUI::current()->Run();
 189
 190   return 0;
 191 }
 192
 193 }  // namespace
 194
 195 int main(int argc, char** argv) {
 196   base::CommandLine::Init(argc, argv);
 197
 198   // The exit manager is in charge of calling the dtors of singleton objects.
 199   base::AtExitManager exit_manager;
 200
 201   base::i18n::InitializeICU();
 202
 203   return DemoMain();
 204 }