This source file includes following definitions.
- IsRightEdge
- GetBoundsChangeForWindowComponent
- GetPositionChangeDirectionForWindowComponent
- CalculateBoundsForDrag
- IsBottomEdge
- AdjustDeltaForTouchResize
- GetOriginForDrag
- GetSizeForDrag
- GetWidthForDrag
- GetHeightForDrag
#include "ash/wm/window_resizer.h"
#include "ash/screen_util.h"
#include "ash/shell.h"
#include "ash/shell_window_ids.h"
#include "ash/wm/coordinate_conversion.h"
#include "ash/wm/dock/docked_window_layout_manager.h"
#include "ash/wm/window_state.h"
#include "ash/wm/window_util.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/base/hit_test.h"
#include "ui/base/ui_base_types.h"
#include "ui/compositor/scoped_layer_animation_settings.h"
#include "ui/gfx/display.h"
#include "ui/gfx/screen.h"
namespace ash {
namespace {
bool IsRightEdge(int window_component) {
return window_component == HTTOPRIGHT ||
window_component == HTRIGHT ||
window_component == HTBOTTOMRIGHT ||
window_component == HTGROWBOX;
}
}
const int WindowResizer::kBoundsChange_None = 0;
const int WindowResizer::kBoundsChange_Repositions = 1;
const int WindowResizer::kBoundsChange_Resizes = 2;
const int WindowResizer::kBoundsChangeDirection_None = 0;
const int WindowResizer::kBoundsChangeDirection_Horizontal = 1;
const int WindowResizer::kBoundsChangeDirection_Vertical = 2;
WindowResizer::WindowResizer() {
}
WindowResizer::WindowResizer(wm::WindowState* window_state)
: window_state_(window_state) {
DCHECK(window_state_->drag_details());
}
WindowResizer::~WindowResizer() {
}
int WindowResizer::GetBoundsChangeForWindowComponent(int component) {
int bounds_change = WindowResizer::kBoundsChange_None;
switch (component) {
case HTTOPLEFT:
case HTTOP:
case HTTOPRIGHT:
case HTLEFT:
case HTBOTTOMLEFT:
bounds_change |= WindowResizer::kBoundsChange_Repositions |
WindowResizer::kBoundsChange_Resizes;
break;
case HTCAPTION:
bounds_change |= WindowResizer::kBoundsChange_Repositions;
break;
case HTRIGHT:
case HTBOTTOMRIGHT:
case HTBOTTOM:
case HTGROWBOX:
bounds_change |= WindowResizer::kBoundsChange_Resizes;
break;
default:
break;
}
return bounds_change;
}
int WindowResizer::GetPositionChangeDirectionForWindowComponent(
int window_component) {
int pos_change_direction = WindowResizer::kBoundsChangeDirection_None;
switch (window_component) {
case HTTOPLEFT:
case HTBOTTOMRIGHT:
case HTGROWBOX:
case HTCAPTION:
pos_change_direction |=
WindowResizer::kBoundsChangeDirection_Horizontal |
WindowResizer::kBoundsChangeDirection_Vertical;
break;
case HTTOP:
case HTTOPRIGHT:
case HTBOTTOM:
pos_change_direction |= WindowResizer::kBoundsChangeDirection_Vertical;
break;
case HTBOTTOMLEFT:
case HTRIGHT:
case HTLEFT:
pos_change_direction |= WindowResizer::kBoundsChangeDirection_Horizontal;
break;
default:
break;
}
return pos_change_direction;
}
gfx::Rect WindowResizer::CalculateBoundsForDrag(
const gfx::Point& passed_location) {
if (!details().is_resizable)
return details().initial_bounds_in_parent;
gfx::Point location = passed_location;
int delta_x = location.x() - details().initial_location_in_parent.x();
int delta_y = location.y() - details().initial_location_in_parent.y();
AdjustDeltaForTouchResize(&delta_x, &delta_y);
gfx::Size size = GetSizeForDrag(&delta_x, &delta_y);
gfx::Point origin = GetOriginForDrag(delta_x, delta_y);
gfx::Rect new_bounds(origin, size);
if (details().bounds_change & kBoundsChange_Resizes) {
gfx::Rect work_area =
Shell::GetScreen()->GetDisplayNearestWindow(GetTarget()).work_area();
aura::Window* dock_container = Shell::GetContainer(
GetTarget()->GetRootWindow(), kShellWindowId_DockedContainer);
DockedWindowLayoutManager* dock_layout =
static_cast<DockedWindowLayoutManager*>(
dock_container->layout_manager());
work_area.Union(dock_layout->docked_bounds());
work_area = ScreenUtil::ConvertRectFromScreen(GetTarget()->parent(),
work_area);
if (details().size_change_direction & kBoundsChangeDirection_Horizontal) {
if (IsRightEdge(details().window_component) &&
new_bounds.right() < work_area.x() + kMinimumOnScreenArea) {
int delta = work_area.x() + kMinimumOnScreenArea - new_bounds.right();
new_bounds.set_width(new_bounds.width() + delta);
} else if (new_bounds.x() > work_area.right() - kMinimumOnScreenArea) {
int width = new_bounds.right() - work_area.right() +
kMinimumOnScreenArea;
new_bounds.set_x(work_area.right() - kMinimumOnScreenArea);
new_bounds.set_width(width);
}
}
if (details().size_change_direction & kBoundsChangeDirection_Vertical) {
if (!IsBottomEdge(details().window_component) &&
new_bounds.y() > work_area.bottom() - kMinimumOnScreenArea) {
int height = new_bounds.bottom() - work_area.bottom() +
kMinimumOnScreenArea;
new_bounds.set_y(work_area.bottom() - kMinimumOnScreenArea);
new_bounds.set_height(height);
} else if (details().window_component == HTBOTTOM ||
details().window_component == HTBOTTOMRIGHT ||
details().window_component == HTBOTTOMLEFT) {
if (new_bounds.bottom() > work_area.bottom())
new_bounds.Inset(0, 0, 0,
new_bounds.bottom() - work_area.bottom());
}
}
if (details().bounds_change & kBoundsChange_Repositions &&
new_bounds.y() < 0) {
int delta = new_bounds.y();
new_bounds.set_y(0);
new_bounds.set_height(new_bounds.height() + delta);
}
}
if (details().bounds_change & kBoundsChange_Repositions) {
if (!details().restore_bounds.IsEmpty()) {
if (details().initial_location_in_parent.x() >
details().initial_bounds_in_parent.x() +
details().restore_bounds.width())
new_bounds.set_x(location.x() - details().restore_bounds.width() / 2);
}
aura::Window* parent = GetTarget()->parent();
gfx::Point passed_location_in_screen(passed_location);
wm::ConvertPointToScreen(parent, &passed_location_in_screen);
gfx::Rect near_passed_location(passed_location_in_screen, gfx::Size());
const gfx::Display& display =
Shell::GetScreen()->GetDisplayMatching(near_passed_location);
aura::Window* dock_container =
Shell::GetContainer(wm::GetRootWindowMatching(near_passed_location),
kShellWindowId_DockedContainer);
DockedWindowLayoutManager* dock_layout =
static_cast<DockedWindowLayoutManager*>(
dock_container->layout_manager());
gfx::Rect screen_work_area = display.work_area();
screen_work_area.Union(dock_layout->docked_bounds());
screen_work_area.Inset(kMinimumOnScreenArea, 0);
gfx::Rect new_bounds_in_screen =
ScreenUtil::ConvertRectToScreen(parent, new_bounds);
if (!screen_work_area.Intersects(new_bounds_in_screen)) {
new_bounds_in_screen.set_x(
std::max(screen_work_area.x() - new_bounds.width(),
std::min(screen_work_area.right(),
new_bounds_in_screen.x())));
new_bounds =
ScreenUtil::ConvertRectFromScreen(parent, new_bounds_in_screen);
}
}
return new_bounds;
}
bool WindowResizer::IsBottomEdge(int window_component) {
return window_component == HTBOTTOMLEFT ||
window_component == HTBOTTOM ||
window_component == HTBOTTOMRIGHT ||
window_component == HTGROWBOX;
}
void WindowResizer::AdjustDeltaForTouchResize(int* delta_x, int* delta_y) {
if (details().source != aura::client::WINDOW_MOVE_SOURCE_TOUCH ||
!(details().bounds_change & kBoundsChange_Resizes))
return;
if (details().size_change_direction & kBoundsChangeDirection_Horizontal) {
if (IsRightEdge(details().window_component)) {
*delta_x += details().initial_location_in_parent.x() -
details().initial_bounds_in_parent.right();
} else {
*delta_x += details().initial_location_in_parent.x() -
details().initial_bounds_in_parent.x();
}
}
if (details().size_change_direction & kBoundsChangeDirection_Vertical) {
if (IsBottomEdge(details().window_component)) {
*delta_y += details().initial_location_in_parent.y() -
details().initial_bounds_in_parent.bottom();
} else {
*delta_y += details().initial_location_in_parent.y() -
details().initial_bounds_in_parent.y();
}
}
}
gfx::Point WindowResizer::GetOriginForDrag(int delta_x, int delta_y) {
gfx::Point origin = details().initial_bounds_in_parent.origin();
if (details().bounds_change & kBoundsChange_Repositions) {
int pos_change_direction = GetPositionChangeDirectionForWindowComponent(
details().window_component);
if (pos_change_direction & kBoundsChangeDirection_Horizontal)
origin.Offset(delta_x, 0);
if (pos_change_direction & kBoundsChangeDirection_Vertical)
origin.Offset(0, delta_y);
}
return origin;
}
gfx::Size WindowResizer::GetSizeForDrag(int* delta_x, int* delta_y) {
gfx::Size size = details().initial_bounds_in_parent.size();
if (details().bounds_change & kBoundsChange_Resizes) {
gfx::Size min_size = GetTarget()->delegate()->GetMinimumSize();
size.SetSize(GetWidthForDrag(min_size.width(), delta_x),
GetHeightForDrag(min_size.height(), delta_y));
} else if (!details().restore_bounds.IsEmpty()) {
size = details().restore_bounds.size();
}
return size;
}
int WindowResizer::GetWidthForDrag(int min_width, int* delta_x) {
int width = details().initial_bounds_in_parent.width();
if (details().size_change_direction & kBoundsChangeDirection_Horizontal) {
int x_multiplier = IsRightEdge(details().window_component) ? 1 : -1;
width += x_multiplier * (*delta_x);
if (width < min_width) {
width = min_width;
*delta_x = -x_multiplier * (details().initial_bounds_in_parent.width() -
min_width);
}
int max_width = Shell::GetScreen()->GetDisplayNearestWindow(
GetTarget()).bounds().width();
gfx::Size max_size = GetTarget()->delegate()->GetMaximumSize();
if (max_size.width() != 0)
max_width = std::min(max_width, max_size.width());
if (width > max_width) {
width = max_width;
*delta_x = -x_multiplier * (details().initial_bounds_in_parent.width() -
max_width);
}
}
return width;
}
int WindowResizer::GetHeightForDrag(int min_height, int* delta_y) {
int height = details().initial_bounds_in_parent.height();
if (details().size_change_direction & kBoundsChangeDirection_Vertical) {
int y_multiplier = IsBottomEdge(details().window_component) ? 1 : -1;
height += y_multiplier * (*delta_y);
if (height < min_height) {
height = min_height;
*delta_y = -y_multiplier * (details().initial_bounds_in_parent.height() -
min_height);
}
int max_height = Shell::GetScreen()->GetDisplayNearestWindow(
GetTarget()).bounds().height();
gfx::Size max_size = GetTarget()->delegate()->GetMaximumSize();
if (max_size.height() != 0)
max_height = std::min(max_height, max_size.height());
if (height > max_height) {
height = max_height;
*delta_y = -y_multiplier * (details().initial_bounds_in_parent.height() -
max_height);
}
}
return height;
}
}