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// Copyright (c) 2010 The Chromium 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 "chrome/browser/views/frame/contents_container.h"
#include "app/resource_bundle.h"
#include "chrome/browser/location_bar.h"
#include "chrome/browser/views/frame/browser_view.h"
#include "grit/theme_resources.h"
#include "views/controls/image_view.h"
#include "views/widget/root_view.h"
#if defined(OS_WIN)
#include "views/widget/widget_win.h"
#elif defined(OS_LINUX)
#include "chrome/browser/gtk/gtk_util.h"
#include "views/window/window_gtk.h"
#endif
#if defined(OS_WIN)
class ContentsContainer::TearWindow : public views::WidgetWin {
public:
explicit TearWindow(ContentsContainer* contents_container)
: contents_container_(contents_container) {
set_window_style(WS_POPUP | WS_CLIPCHILDREN);
set_window_ex_style(WS_EX_TOOLWINDOW | WS_EX_LAYERED);
}
virtual ~TearWindow() {
// On windows it's possible for us to be deleted before the
// ContentsContainer. If this happens make sure contents_container_ doesn't
// attempt to delete us too.
if (contents_container_)
contents_container_->TearWindowDestroyed();
}
void set_contents_container(ContentsContainer* contents_container) {
contents_container_ = contents_container;
}
virtual LRESULT OnMouseActivate(HWND window,
UINT hit_test,
UINT mouse_message) {
// Don't activate the window when the user clicks it.
contents_container_->browser_view_->GetLocationBar()->Revert();
return MA_NOACTIVATE;
}
private:
ContentsContainer* contents_container_;
DISALLOW_COPY_AND_ASSIGN(TearWindow);
};
#endif
ContentsContainer::ContentsContainer(BrowserView* browser_view,
views::View* active)
: browser_view_(browser_view),
active_(active),
preview_(NULL),
preview_tab_contents_(NULL),
tear_window_(NULL),
active_top_margin_(0) {
AddChildView(active_);
}
ContentsContainer::~ContentsContainer() {
DeleteTearWindow();
}
void ContentsContainer::MakePreviewContentsActiveContents() {
active_ = preview_;
preview_ = NULL;
DeleteTearWindow();
Layout();
}
void ContentsContainer::SetPreview(views::View* preview,
TabContents* preview_tab_contents) {
if (preview == preview_)
return;
if (preview_) {
RemoveChildView(preview_);
DeleteTearWindow();
}
preview_ = preview;
preview_tab_contents_ = preview_tab_contents;
if (preview_) {
AddChildView(preview_);
CreateTearWindow();
}
Layout();
if (preview_)
tear_window_->Show(); // Show after we'ved positioned it in Layout.
}
void ContentsContainer::SetActiveTopMargin(int margin) {
if (active_top_margin_ == margin)
return;
active_top_margin_ = margin;
// Make sure we layout next time around. We need this in case our bounds
// haven't changed.
InvalidateLayout();
}
gfx::Rect ContentsContainer::GetPreviewBounds() {
gfx::Point screen_loc;
ConvertPointToScreen(this, &screen_loc);
return gfx::Rect(screen_loc, size());
}
void ContentsContainer::Layout() {
// The active view always gets the full bounds.
active_->SetBounds(0, active_top_margin_, width(),
std::max(0, height() - active_top_margin_));
if (preview_) {
preview_->SetBounds(0, 0, width(), height());
PositionTearWindow();
}
// Need to invoke views::View in case any views whose bounds didn't change
// still need a layout.
views::View::Layout();
}
void ContentsContainer::CreateTearWindow() {
DCHECK(preview_);
tear_window_ = CreateTearWindowImpl();
views::ImageView* image_view = new views::ImageView();
image_view->SetImage(ResourceBundle::GetSharedInstance().GetBitmapNamed(
IDR_MATCH_PREVIEW_TEAR));
tear_window_->SetContentsView(image_view);
}
#if defined(OS_WIN)
ContentsContainer::TearWindow* ContentsContainer::CreateTearWindowImpl() {
TearWindow* widget = new TearWindow(this);
widget->Init(browser_view_->GetNativeHandle(), gfx::Rect());
return widget;
}
#elif defined(OS_LINUX)
ContentsContainer::TearWindow* ContentsContainer::CreateTearWindowImpl() {
views::WidgetGtk* widget = new views::WidgetGtk(views::WidgetGtk::TYPE_POPUP);
widget->MakeTransparent();
widget->Init(NULL, gfx::Rect());
gtk_util::StackPopupWindow(widget->GetNativeView(),
GTK_WIDGET(browser_view_->GetNativeHandle()));
return widget;
}
#endif
void ContentsContainer::PositionTearWindow() {
if (!tear_window_)
return;
gfx::Rect vis_bounds = GetVisibleBounds();
gfx::Size pref = tear_window_->GetRootView()->GetPreferredSize();
// Constrain to the the visible bounds as we may be given a different size
// than is actually visible.
pref.SetSize(std::min(pref.width(), vis_bounds.width()),
std::min(pref.height(), vis_bounds.height()));
gfx::Rect bounds(0, 0, pref.width(), pref.height());
bounds.set_x(MirroredLeftPointForRect(bounds));
gfx::Point origin(bounds.origin());
views::View::ConvertPointToScreen(this, &origin);
tear_window_->SetBounds(gfx::Rect(origin, pref));
}
void ContentsContainer::DeleteTearWindow() {
if (!tear_window_)
return;
tear_window_->Close();
#if defined(OS_WIN)
tear_window_->set_contents_container(NULL);
#endif
// Close deletes the tear window.
tear_window_ = NULL;
}
void ContentsContainer::TearWindowDestroyed() {
tear_window_ = NULL;
}
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