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1 // Copyright 2013 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 "components/native_viewport/platform_viewport.h" | |
6 | |
7 #include "base/command_line.h" | |
8 #include "base/message_loop/message_loop.h" | |
9 #include "mojo/converters/geometry/geometry_type_converters.h" | |
10 #include "mojo/converters/input_events/input_events_type_converters.h" | |
11 #include "mojo/converters/input_events/mojo_extended_key_event_data.h" | |
12 #include "ui/events/event.h" | |
13 #include "ui/events/event_utils.h" | |
14 #include "ui/events/platform/platform_event_dispatcher.h" | |
15 #include "ui/gfx/geometry/rect.h" | |
16 #include "ui/platform_window/platform_window.h" | |
17 #include "ui/platform_window/platform_window_delegate.h" | |
18 #include "ui/platform_window/x11/x11_window.h" | |
19 | |
20 namespace native_viewport { | |
21 namespace { | |
22 | |
23 float ConvertUIWheelValueToMojoValue(int offset) { | |
24 // Mojo's event type takes a value between -1 and 1. Normalize by allowing | |
25 // up to 20 of ui's offset. This is a bit arbitrary. | |
26 return std::max( | |
27 -1.0f, std::min(1.0f, static_cast<float>(offset) / | |
28 (20 * static_cast<float>( | |
29 ui::MouseWheelEvent::kWheelDelta)))); | |
30 } | |
31 } // namespace | |
32 | |
33 class PlatformViewportX11 : public PlatformViewport, | |
34 public ui::PlatformWindowDelegate { | |
35 public: | |
36 explicit PlatformViewportX11(Delegate* delegate) : delegate_(delegate) { | |
37 } | |
38 | |
39 ~PlatformViewportX11() override { | |
40 // Destroy the platform-window while |this| is still alive. | |
41 platform_window_.reset(); | |
42 } | |
43 | |
44 private: | |
45 // Overridden from PlatformViewport: | |
46 void Init(const gfx::Rect& bounds) override { | |
47 CHECK(!platform_window_); | |
48 | |
49 metrics_ = mojo::ViewportMetrics::New(); | |
50 // TODO(sky): make density real. | |
51 metrics_->device_pixel_ratio = 1.f; | |
52 metrics_->size = mojo::Size::From(bounds.size()); | |
53 | |
54 platform_window_.reset(new ui::X11Window(this)); | |
55 platform_window_->SetBounds(bounds); | |
56 } | |
57 | |
58 void Show() override { platform_window_->Show(); } | |
59 | |
60 void Hide() override { platform_window_->Hide(); } | |
61 | |
62 void Close() override { platform_window_->Close(); } | |
63 | |
64 gfx::Size GetSize() override { return metrics_->size.To<gfx::Size>(); } | |
65 | |
66 void SetBounds(const gfx::Rect& bounds) override { | |
67 platform_window_->SetBounds(bounds); | |
68 } | |
69 | |
70 // ui::PlatformWindowDelegate: | |
71 void OnBoundsChanged(const gfx::Rect& new_bounds) override { | |
72 metrics_->size = mojo::Size::From(new_bounds.size()); | |
73 delegate_->OnMetricsChanged(metrics_.Clone()); | |
74 } | |
75 | |
76 void OnDamageRect(const gfx::Rect& damaged_region) override {} | |
77 | |
78 void DispatchEvent(ui::Event* event) override { | |
79 mojo::EventPtr mojo_event(mojo::Event::From(*event)); | |
80 if (event->IsMouseWheelEvent()) { | |
81 // Mojo's event type has a different meaning for wheel events. Convert | |
82 // between the two. | |
83 ui::MouseWheelEvent* wheel_event = | |
84 static_cast<ui::MouseWheelEvent*>(event); | |
85 DCHECK(mojo_event->pointer_data); | |
86 mojo_event->pointer_data->horizontal_wheel = | |
87 ConvertUIWheelValueToMojoValue(wheel_event->x_offset()); | |
88 mojo_event->pointer_data->horizontal_wheel = | |
89 ConvertUIWheelValueToMojoValue(wheel_event->y_offset()); | |
90 } | |
91 delegate_->OnEvent(mojo_event.Pass()); | |
92 | |
93 switch (event->type()) { | |
94 case ui::ET_MOUSE_PRESSED: | |
95 case ui::ET_TOUCH_PRESSED: | |
96 platform_window_->SetCapture(); | |
97 break; | |
98 case ui::ET_MOUSE_RELEASED: | |
99 case ui::ET_TOUCH_RELEASED: | |
100 platform_window_->ReleaseCapture(); | |
101 break; | |
102 default: | |
103 break; | |
104 } | |
105 | |
106 // We want to emulate the WM_CHAR generation behaviour of Windows. | |
107 // | |
108 // On Linux, we've previously inserted characters by having | |
109 // InputMethodAuraLinux take all key down events and send a character event | |
110 // to the TextInputClient. This causes a mismatch in code that has to be | |
111 // shared between Windows and Linux, including blink code. Now that we're | |
112 // trying to have one way of doing things, we need to standardize on and | |
113 // emulate Windows character events. | |
114 // | |
115 // This is equivalent to what we're doing in the current Linux port, but | |
116 // done once instead of done multiple times in different places. | |
117 if (event->type() == ui::ET_KEY_PRESSED) { | |
118 ui::KeyEvent* key_press_event = static_cast<ui::KeyEvent*>(event); | |
119 ui::KeyEvent char_event(key_press_event->GetCharacter(), | |
120 key_press_event->key_code(), | |
121 key_press_event->flags()); | |
122 | |
123 DCHECK_EQ(key_press_event->GetCharacter(), char_event.GetCharacter()); | |
124 DCHECK_EQ(key_press_event->key_code(), char_event.key_code()); | |
125 DCHECK_EQ(key_press_event->flags(), char_event.flags()); | |
126 | |
127 char_event.SetExtendedKeyEventData( | |
128 make_scoped_ptr(new mojo::MojoExtendedKeyEventData( | |
129 key_press_event->GetLocatedWindowsKeyboardCode(), | |
130 key_press_event->GetText(), | |
131 key_press_event->GetUnmodifiedText()))); | |
132 char_event.set_platform_keycode(key_press_event->platform_keycode()); | |
133 | |
134 delegate_->OnEvent(mojo::Event::From(char_event)); | |
135 } | |
136 } | |
137 | |
138 void OnCloseRequest() override { platform_window_->Close(); } | |
139 | |
140 void OnClosed() override { delegate_->OnDestroyed(); } | |
141 | |
142 void OnWindowStateChanged(ui::PlatformWindowState state) override {} | |
143 | |
144 void OnLostCapture() override {} | |
145 | |
146 void OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget) override { | |
147 delegate_->OnAcceleratedWidgetAvailable(widget, | |
148 metrics_->device_pixel_ratio); | |
149 } | |
150 | |
151 void OnActivationChanged(bool active) override {} | |
152 | |
153 scoped_ptr<ui::PlatformWindow> platform_window_; | |
154 Delegate* delegate_; | |
155 mojo::ViewportMetricsPtr metrics_; | |
156 | |
157 DISALLOW_COPY_AND_ASSIGN(PlatformViewportX11); | |
158 }; | |
159 | |
160 // static | |
161 scoped_ptr<PlatformViewport> PlatformViewport::Create(Delegate* delegate) { | |
162 return make_scoped_ptr(new PlatformViewportX11(delegate)); | |
163 } | |
164 | |
165 } // namespace native_viewport | |
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