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