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