129 lines
5.0 KiB
C++
129 lines
5.0 KiB
C++
// Copyright 2016 The Chromium Embedded Framework Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be found
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// in the LICENSE file.
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#ifndef CEF_LIBCEF_BROWSER_VIEWS_VIEW_UTIL_H_
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#define CEF_LIBCEF_BROWSER_VIEWS_VIEW_UTIL_H_
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#pragma once
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#include "include/views/cef_view.h"
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#include "include/views/cef_window.h"
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#include "ui/views/view.h"
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namespace display {
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class Display;
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}
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namespace gfx {
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class Point;
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}
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namespace views {
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class Widget;
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}
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#define CEF_REQUIRE_VALID_RETURN(ret) \
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if (!ParentClass::IsValid()) \
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return ret;
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#define CEF_REQUIRE_VALID_RETURN_VOID() \
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if (!ParentClass::IsValid()) \
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return;
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// The below functions manage the relationship between CefView and views::View
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// instances. See comments in view_impl.h for a usage overview.
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namespace view_util {
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// Default values.
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extern const SkColor kDefaultBackgroundColor;
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extern const char kDefaultFontList[];
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// Called when a CefView is initialized to create the initial association
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// between the underlying views::View and |view|. The CefView owns the
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// views::View at this stage.
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void Register(CefRefPtr<CefView> view);
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// Returns the CefView object associated with the specified |view|. If no
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// CefView is associated with |view| and |find_known_parent| is true then this
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// function will return the closest parent views::View with an associated
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// CefView.
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CefRefPtr<CefView> GetFor(const views::View* view, bool find_known_parent);
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// Returns the views::View object associated with the specified |view|.
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// Ownership of the views::View object does not change.
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views::View* GetFor(CefRefPtr<CefView> view);
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// Returns the views::View object associated with the specified |view| and
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// passes ownership to the caller. The views::View object should then be passed
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// to another views::View via views::View or views::LayoutManager methods. The
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// views::View will keep a ref-counted reference to |view|, and |view| will keep
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// an un-owned reference to the views::View. These references will reset when
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// the views::View object is deleted or when ResumeOwnership() is called.
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std::unique_ptr<views::View> PassOwnership(CefRefPtr<CefView> view)
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WARN_UNUSED_RESULT;
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// Causes |view| to resume ownership of the views::View object. Should be called
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// after removing the views::View object from its previous parent.
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void ResumeOwnership(CefRefPtr<CefView> view);
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// Returns the Window associated with |widget|.
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CefRefPtr<CefWindow> GetWindowFor(views::Widget* widget);
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// Returns the Display nearest |point|. Set |input_pixel_coords| to true if
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// |point| is in pixel coordinates instead of density independent pixels (DIP).
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display::Display GetDisplayNearestPoint(const gfx::Point& point,
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bool input_pixel_coords);
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// Returns the Display that most closely intersects |bounds|. Set
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// |input_pixel_coords| to true if |bounds| is in pixel coordinates instead of
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// density independent pixels (DIP).
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display::Display GetDisplayMatchingBounds(const gfx::Rect& bounds,
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bool input_pixel_coords);
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// Convert |point| from pixel coordinates to density independent pixels (DIP)
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// using |device_scale_factor|.
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void ConvertPointFromPixels(gfx::Point* point, int device_scale_factor);
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// Convert |point| to pixel coordinates from density independent pixels (DIP)
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// using |device_scale_factor|.
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void ConvertPointToPixels(gfx::Point* point, int device_scale_factor);
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// Convert |point| from |view| to screen coordinates. If |output_pixel_coords|
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// is true then |point| will be output in pixel coordinates instead of density
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// independent pixels (DIP). Returns false if |view| does not currently belong
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// to a Widget.
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bool ConvertPointToScreen(views::View* view,
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gfx::Point* point,
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bool output_pixel_coords);
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// Convert |point| from screen to |view| coordinates. Set |input_pixel_coords|
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// to true when |point| is being input in pixel coordinates instead of density
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// independent pixels (DIP). Returns false if |view| does not currently belong
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// to a Widget.
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bool ConvertPointFromScreen(views::View* view,
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gfx::Point* point,
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bool input_pixel_coords);
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// Convert |point| from |view| to window (Widget) coordinates. Returns false if
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// |view| does not currently belong to a Widget.
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bool ConvertPointToWindow(views::View* view, gfx::Point* point);
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// Convert |point| from window (Widget) to |view| coordinates. Returns false if
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// |view| does not currently belong to a Widget.
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bool ConvertPointFromWindow(views::View* view, gfx::Point* point);
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// Returns the native window handle for |widget|. May return nullptr.
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gfx::NativeWindow GetNativeWindow(views::Widget* widget);
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// Returns the native view handle for |widget|. May return nullptr.
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gfx::NativeView GetNativeView(views::Widget* widget);
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// Returns the platform window handle for |widget|. May return nullptr.
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CefWindowHandle GetWindowHandle(views::Widget* widget);
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} // namespace view_util
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#endif // CEF_LIBCEF_BROWSER_VIEWS_VIEW_UTIL_H_
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