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// Copyright (c) 2012 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 "ash/wm/window_util.h"
#include <vector>
#include "ash/ash_constants.h"
#include "ash/screen_util.h"
#include "ash/shell.h"
#include "ash/snap_to_pixel_layout_manager.h"
#include "ash/wm/window_properties.h"
#include "ash/wm/window_state.h"
#include "ash/wm/wm_event.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/window.h"
#include "ui/aura/window_delegate.h"
#include "ui/aura/window_event_dispatcher.h"
#include "ui/compositor/dip_util.h"
#include "ui/gfx/display.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/screen.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"
#include "ui/wm/core/window_util.h"
#include "ui/wm/public/activation_client.h"
namespace ash {
namespace wm {
namespace {
// Returns the default width of a snapped window.
int GetDefaultSnappedWindowWidth(aura::Window* window) {
const float kSnappedWidthWorkspaceRatio = 0.5f;
int work_area_width =
ScreenUtil::GetDisplayWorkAreaBoundsInParent(window).width();
int min_width = window->delegate() ?
window->delegate()->GetMinimumSize().width() : 0;
int ideal_width =
static_cast<int>(work_area_width * kSnappedWidthWorkspaceRatio);
return std::min(work_area_width, std::max(ideal_width, min_width));
}
} // namespace
// TODO(beng): replace many of these functions with the corewm versions.
void ActivateWindow(aura::Window* window) {
::wm::ActivateWindow(window);
}
void DeactivateWindow(aura::Window* window) {
::wm::DeactivateWindow(window);
}
bool IsActiveWindow(aura::Window* window) {
return ::wm::IsActiveWindow(window);
}
aura::Window* GetActiveWindow() {
return aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())->
GetActiveWindow();
}
aura::Window* GetActivatableWindow(aura::Window* window) {
return ::wm::GetActivatableWindow(window);
}
bool CanActivateWindow(aura::Window* window) {
return ::wm::CanActivateWindow(window);
}
bool IsWindowMinimized(aura::Window* window) {
return ash::wm::GetWindowState(window)->IsMinimized();
}
bool IsWindowUserPositionable(aura::Window* window) {
return GetWindowState(window)->IsUserPositionable();
}
void CenterWindow(aura::Window* window) {
wm::WMEvent event(wm::WM_EVENT_CENTER);
wm::GetWindowState(window)->OnWMEvent(&event);
}
gfx::Rect GetDefaultLeftSnappedWindowBoundsInParent(aura::Window* window) {
gfx::Rect work_area_in_parent(ScreenUtil::GetDisplayWorkAreaBoundsInParent(
window));
return gfx::Rect(work_area_in_parent.x(),
work_area_in_parent.y(),
GetDefaultSnappedWindowWidth(window),
work_area_in_parent.height());
}
gfx::Rect GetDefaultRightSnappedWindowBoundsInParent(aura::Window* window) {
gfx::Rect work_area_in_parent(ScreenUtil::GetDisplayWorkAreaBoundsInParent(
window));
int width = GetDefaultSnappedWindowWidth(window);
return gfx::Rect(work_area_in_parent.right() - width,
work_area_in_parent.y(),
width,
work_area_in_parent.height());
}
void AdjustBoundsSmallerThan(const gfx::Size& max_size, gfx::Rect* bounds) {
bounds->set_width(std::min(bounds->width(), max_size.width()));
bounds->set_height(std::min(bounds->height(), max_size.height()));
}
void AdjustBoundsToEnsureMinimumWindowVisibility(const gfx::Rect& visible_area,
gfx::Rect* bounds) {
AdjustBoundsToEnsureWindowVisibility(
visible_area, kMinimumOnScreenArea, kMinimumOnScreenArea, bounds);
}
void AdjustBoundsToEnsureWindowVisibility(const gfx::Rect& visible_area,
int min_width,
int min_height,
gfx::Rect* bounds) {
AdjustBoundsSmallerThan(visible_area.size(), bounds);
min_width = std::min(min_width, visible_area.width());
min_height = std::min(min_height, visible_area.height());
if (bounds->right() < visible_area.x() + min_width) {
bounds->set_x(visible_area.x() + min_width - bounds->width());
} else if (bounds->x() > visible_area.right() - min_width) {
bounds->set_x(visible_area.right() - min_width);
}
if (bounds->bottom() < visible_area.y() + min_height) {
bounds->set_y(visible_area.y() + min_height - bounds->height());
} else if (bounds->y() > visible_area.bottom() - min_height) {
bounds->set_y(visible_area.bottom() - min_height);
}
if (bounds->y() < visible_area.y())
bounds->set_y(visible_area.y());
}
bool MoveWindowToEventRoot(aura::Window* window, const ui::Event& event) {
views::View* target = static_cast<views::View*>(event.target());
if (!target)
return false;
aura::Window* target_root =
target->GetWidget()->GetNativeView()->GetRootWindow();
if (!target_root || target_root == window->GetRootWindow())
return false;
aura::Window* window_container =
ash::Shell::GetContainer(target_root, window->parent()->id());
// Move the window to the target launcher.
window_container->AddChild(window);
return true;
}
void ReparentChildWithTransientChildren(aura::Window* child,
aura::Window* old_parent,
aura::Window* new_parent) {
if (child->parent() == old_parent)
new_parent->AddChild(child);
ReparentTransientChildrenOfChild(child, old_parent, new_parent);
}
void ReparentTransientChildrenOfChild(aura::Window* child,
aura::Window* old_parent,
aura::Window* new_parent) {
for (size_t i = 0;
i < ::wm::GetTransientChildren(child).size();
++i) {
ReparentChildWithTransientChildren(
::wm::GetTransientChildren(child)[i],
old_parent,
new_parent);
}
}
void SnapWindowToPixelBoundary(aura::Window* window) {
aura::Window* snapped_ancestor = window->parent();
while (snapped_ancestor) {
if (snapped_ancestor->GetProperty(kSnapChildrenToPixelBoundary)) {
ui::SnapLayerToPhysicalPixelBoundary(snapped_ancestor->layer(),
window->layer());
return;
}
snapped_ancestor = snapped_ancestor->parent();
}
}
void SetSnapsChildrenToPhysicalPixelBoundary(aura::Window* container) {
DCHECK(!container->GetProperty(kSnapChildrenToPixelBoundary))
<< container->name();
container->SetProperty(kSnapChildrenToPixelBoundary, true);
}
void InstallSnapLayoutManagerToContainers(aura::Window* parent) {
aura::Window::Windows children = parent->children();
for (aura::Window::Windows::iterator iter = children.begin();
iter != children.end();
++iter) {
aura::Window* container = *iter;
if (container->id() < 0) // not a container
continue;
if (container->GetProperty(kSnapChildrenToPixelBoundary)) {
if (!container->layout_manager())
container->SetLayoutManager(new SnapToPixelLayoutManager(container));
} else {
InstallSnapLayoutManagerToContainers(container);
}
}
}
} // namespace wm
} // namespace ash
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