glass_app_window_frame_view_win.cc revision 116680a4aac90f2aa7413d9095a592090648e557 
1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chrome/browser/ui/views/apps/glass_app_window_frame_view_win.h"
6
7#include "apps/ui/native_app_window.h"
8#include "ui/base/hit_test.h"
9#include "ui/gfx/win/dpi.h"
10#include "ui/views/widget/widget.h"
11#include "ui/views/widget/widget_delegate.h"
12
13namespace {
14
15const int kResizeAreaCornerSize = 16;
16
17}  // namespace
18
19const char GlassAppWindowFrameViewWin::kViewClassName[] =
20    "ui/views/apps/GlassAppWindowFrameViewWin";
21
22GlassAppWindowFrameViewWin::GlassAppWindowFrameViewWin(
23    apps::NativeAppWindow* window,
24    views::Widget* widget)
25    : window_(window), widget_(widget) {
26}
27
28GlassAppWindowFrameViewWin::~GlassAppWindowFrameViewWin() {
29}
30
31gfx::Insets GlassAppWindowFrameViewWin::GetGlassInsets() const {
32  // If 1 is not subtracted, they are too big. There is possibly some reason
33  // for that.
34  // Also make sure the insets don't go below 1, as bad things happen when they
35  // do.
36  int caption_height = std::max(0,
37      gfx::win::GetSystemMetricsInDIP(SM_CYSMICON) +
38          gfx::win::GetSystemMetricsInDIP(SM_CYSIZEFRAME) - 1);
39  int frame_size =
40      std::max(1, gfx::win::GetSystemMetricsInDIP(SM_CXSIZEFRAME) - 1);
41  return gfx::Insets(
42      frame_size + caption_height, frame_size, frame_size, frame_size);
43}
44
45gfx::Rect GlassAppWindowFrameViewWin::GetBoundsForClientView() const {
46  if (widget_->IsFullscreen())
47    return bounds();
48
49  gfx::Insets insets = GetGlassInsets();
50  return gfx::Rect(insets.left(),
51                   insets.top(),
52                   std::max(0, width() - insets.left() - insets.right()),
53                   std::max(0, height() - insets.top() - insets.bottom()));
54}
55
56gfx::Rect GlassAppWindowFrameViewWin::GetWindowBoundsForClientBounds(
57    const gfx::Rect& client_bounds) const {
58  gfx::Insets insets = GetGlassInsets();
59  return gfx::Rect(client_bounds.x() - insets.left(),
60                   client_bounds.y() - insets.top(),
61                   client_bounds.width() + insets.left() + insets.right(),
62                   client_bounds.height() + insets.top() + insets.bottom());
63}
64
65int GlassAppWindowFrameViewWin::NonClientHitTest(const gfx::Point& point) {
66  if (widget_->IsFullscreen())
67    return HTCLIENT;
68
69  if (!bounds().Contains(point))
70    return HTNOWHERE;
71
72  // Check the frame first, as we allow a small area overlapping the contents
73  // to be used for resize handles.
74  bool can_ever_resize = widget_->widget_delegate()
75                             ? widget_->widget_delegate()->CanResize()
76                             : false;
77  // Don't allow overlapping resize handles when the window is maximized or
78  // fullscreen, as it can't be resized in those states.
79  int resize_border = gfx::win::GetSystemMetricsInDIP(SM_CXSIZEFRAME);
80  int frame_component =
81      GetHTComponentForFrame(point,
82                             resize_border,
83                             resize_border,
84                             kResizeAreaCornerSize - resize_border,
85                             kResizeAreaCornerSize - resize_border,
86                             can_ever_resize);
87  if (frame_component != HTNOWHERE)
88    return frame_component;
89
90  int client_component = widget_->client_view()->NonClientHitTest(point);
91  if (client_component != HTNOWHERE)
92    return client_component;
93
94  // Caption is a safe default.
95  return HTCAPTION;
96}
97
98void GlassAppWindowFrameViewWin::GetWindowMask(const gfx::Size& size,
99                                               gfx::Path* window_mask) {
100  // We got nothing to say about no window mask.
101}
102
103gfx::Size GlassAppWindowFrameViewWin::GetPreferredSize() const {
104  gfx::Size pref = widget_->client_view()->GetPreferredSize();
105  gfx::Rect bounds(0, 0, pref.width(), pref.height());
106  return widget_->non_client_view()
107      ->GetWindowBoundsForClientBounds(bounds)
108      .size();
109}
110
111const char* GlassAppWindowFrameViewWin::GetClassName() const {
112  return kViewClassName;
113}
114
115gfx::Size GlassAppWindowFrameViewWin::GetMinimumSize() const {
116  gfx::Size min_size = widget_->client_view()->GetMinimumSize();
117  gfx::Rect client_bounds = GetBoundsForClientView();
118  min_size.Enlarge(0, client_bounds.y());
119  return min_size;
120}
121
122gfx::Size GlassAppWindowFrameViewWin::GetMaximumSize() const {
123  gfx::Size max_size = widget_->client_view()->GetMaximumSize();
124
125  // Add to the client maximum size the height of any title bar and borders.
126  gfx::Size client_size = GetBoundsForClientView().size();
127  if (max_size.width())
128    max_size.Enlarge(width() - client_size.width(), 0);
129  if (max_size.height())
130    max_size.Enlarge(0, height() - client_size.height());
131
132  return max_size;
133}
134