| /* |
| * Copyright (C) 2013 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef FullscreenController_h |
| #define FullscreenController_h |
| |
| #include <memory> |
| |
| #include "platform/geometry/FloatPoint.h" |
| #include "platform/geometry/IntSize.h" |
| #include "platform/graphics/Color.h" |
| |
| namespace blink { |
| |
| class Element; |
| class LocalFrame; |
| class WebViewImpl; |
| |
| class FullscreenController { |
| public: |
| static std::unique_ptr<FullscreenController> Create(WebViewImpl*); |
| |
| // Called by Fullscreen (via ChromeClient) to request entering or exiting |
| // fullscreen. |
| void EnterFullscreen(LocalFrame&); |
| void ExitFullscreen(LocalFrame&); |
| |
| // Called by content::RenderWidget (via WebWidget) to notify that we've |
| // entered or exited fullscreen. This can be because we requested it, or it |
| // can be initiated by the browser directly. |
| void DidEnterFullscreen(); |
| void DidExitFullscreen(); |
| |
| // Called by Fullscreen (via ChromeClient) to notify that the fullscreen |
| // element has changed. |
| void FullscreenElementChanged(Element*, Element*); |
| |
| bool IsFullscreenOrTransitioning() const { return state_ != State::kInitial; } |
| |
| void UpdateSize(); |
| |
| void DidUpdateLayout(); |
| |
| protected: |
| explicit FullscreenController(WebViewImpl*); |
| |
| private: |
| void UpdatePageScaleConstraints(bool remove_constraints); |
| void RestoreBackgroundColorOverride(); |
| |
| WebViewImpl* web_view_impl_; |
| |
| // State is used to avoid unnecessary enter/exit requests, and to restore the |
| // m_initial* after the first layout upon exiting fullscreen. Typically, the |
| // state goes through every state from Initial to NeedsScrollAndScaleRestore |
| // and then back to Initial, but the are two exceptions: |
| // 1. didExitFullscreen() can transition from any non-Initial state to |
| // NeedsScrollAndScaleRestore, in case of a browser-intiated exit. |
| // 2. enterFullscreen() can transition from NeedsScrollAndScaleRestore to |
| // EnteringFullscreen, in case of a quick exit+enter. |
| enum class State { |
| kInitial, |
| kEnteringFullscreen, |
| kFullscreen, |
| kExitingFullscreen, |
| kNeedsScrollAndScaleRestore |
| }; |
| State state_ = State::kInitial; |
| |
| float initial_page_scale_factor_ = 0.0f; |
| IntSize initial_scroll_offset_; |
| FloatPoint initial_visual_viewport_offset_; |
| bool initial_background_color_override_enabled_ = false; |
| RGBA32 initial_background_color_override_ = Color::kTransparent; |
| }; |
| |
| } // namespace blink |
| |
| #endif |