cef/libcef/browser/native/window_delegate_view.cc
Ananyo Maiti 1669c0afbd Add print preview support (see issue #123)
Pass the `--enable-print-preview` command-line flag to enable. Currently only
supported on Windows and Linux.
2019-07-19 21:55:30 -04:00

83 lines
2.9 KiB
C++

// Copyright 2014 The Chromium Embedded Framework Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be found
// in the LICENSE file.
#include "libcef/browser/native/window_delegate_view.h"
#include <utility>
#include "content/public/browser/web_contents.h"
#include "ui/views/background.h"
#include "ui/views/controls/webview/webview.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/widget/widget.h"
CefWindowDelegateView::CefWindowDelegateView(
SkColor background_color,
bool always_on_top,
base::RepeatingClosure on_bounds_changed)
: background_color_(background_color),
web_view_(NULL),
always_on_top_(always_on_top),
on_bounds_changed_(on_bounds_changed) {}
void CefWindowDelegateView::Init(gfx::AcceleratedWidget parent_widget,
content::WebContents* web_contents,
const gfx::Rect& bounds) {
DCHECK(!web_view_);
web_view_ = new views::WebView(web_contents->GetBrowserContext());
web_view_->SetWebContents(web_contents);
web_view_->SetPreferredSize(bounds.size());
views::Widget* widget = new views::Widget;
// See CalculateWindowStylesFromInitParams in
// ui/views/widget/widget_hwnd_utils.cc for the conversion of |params| to
// Windows style flags.
views::Widget::InitParams params;
params.parent_widget = parent_widget;
params.bounds = bounds;
params.delegate = this;
// Set the WS_CHILD flag.
params.child = true;
// Set the WS_VISIBLE flag.
params.type = views::Widget::InitParams::TYPE_CONTROL;
// Don't set the WS_EX_COMPOSITED flag.
params.opacity = views::Widget::InitParams::OPAQUE_WINDOW;
// Tell Aura not to draw the window frame on resize.
params.remove_standard_frame = true;
// Cause WidgetDelegate::CanActivate to return true. See comments in
// CefBrowserHostImpl::PlatformSetFocus.
params.activatable = views::Widget::InitParams::ACTIVATABLE_YES;
params.keep_on_top = always_on_top_;
// Results in a call to InitContent().
widget->Init(params);
// |widget| should now be associated with |this|.
DCHECK_EQ(widget, GetWidget());
// |widget| must be top-level for focus handling to work correctly.
DCHECK(widget->is_top_level());
// |widget| must be activatable for focus handling to work correctly.
DCHECK(widget->widget_delegate()->CanActivate());
}
void CefWindowDelegateView::InitContent() {
SetBackground(views::CreateSolidBackground(background_color_));
SetLayoutManager(std::make_unique<views::FillLayout>());
AddChildView(web_view_);
}
void CefWindowDelegateView::ViewHierarchyChanged(
const views::ViewHierarchyChangedDetails& details) {
if (details.is_add && details.child == this)
InitContent();
}
void CefWindowDelegateView::OnBoundsChanged(const gfx::Rect& previous_bounds) {
views::WidgetDelegateView::OnBoundsChanged(previous_bounds);
if (!on_bounds_changed_.is_null())
on_bounds_changed_.Run();
}