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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/views/apps/app_window_frame_view_win.h"
#include <windows.h>
#include <algorithm>
#include "extensions/browser/app_window/native_app_window.h"
#include "ui/base/hit_test.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/win/hwnd_metrics.h"
#include "ui/display/win/screen_win.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_delegate.h"
#include "ui/views/win/hwnd_util.h"
namespace {
const int kResizeAreaCornerSize = 16;
} // namespace
AppWindowFrameViewWin::AppWindowFrameViewWin(views::Widget* widget)
: widget_(widget) {}
AppWindowFrameViewWin::~AppWindowFrameViewWin() = default;
gfx::Insets AppWindowFrameViewWin::GetFrameInsets() const {
int caption_height =
display::win::GetScreenWin()->GetSystemMetricsInDIP(SM_CYSIZEFRAME) +
display::win::GetScreenWin()->GetSystemMetricsInDIP(SM_CYCAPTION);
return gfx::Insets::TLBR(caption_height, 0, 0, 0);
}
gfx::Insets AppWindowFrameViewWin::GetClientAreaInsets(
int frame_thickness) const {
return gfx::Insets::TLBR(0, frame_thickness, frame_thickness,
frame_thickness);
}
gfx::Rect AppWindowFrameViewWin::GetBoundsForClientView() const {
if (widget_->IsFullscreen()) {
return bounds();
}
gfx::Insets insets = GetFrameInsets();
return gfx::Rect(insets.left(), insets.top(),
std::max(0, width() - insets.left() - insets.right()),
std::max(0, height() - insets.top() - insets.bottom()));
}
gfx::Rect AppWindowFrameViewWin::GetWindowBoundsForClientBounds(
const gfx::Rect& client_bounds) const {
if (widget_->IsFullscreen()) {
return bounds();
}
gfx::Insets insets = GetFrameInsets();
const int frame_thickness = ui::GetFrameThicknessFromWindow(
HWNDForView(this), MONITOR_DEFAULTTONEAREST);
insets += GetClientAreaInsets(frame_thickness);
gfx::Rect window_bounds(
client_bounds.x() - insets.left(), client_bounds.y() - insets.top(),
client_bounds.width() + insets.left() + insets.right(),
client_bounds.height() + insets.top() + insets.bottom());
// Prevent the window size from being 0x0 during initialization.
window_bounds.Union(gfx::Rect(0, 0, 1, 1));
return window_bounds;
}
int AppWindowFrameViewWin::NonClientHitTest(const gfx::Point& point) {
if (widget_->IsFullscreen()) {
return HTCLIENT;
}
if (!bounds().Contains(point)) {
return HTNOWHERE;
}
// Check the frame first, as we allow a small area overlapping the contents
// to be used for resize handles.
bool can_ever_resize = widget_->widget_delegate()
? widget_->widget_delegate()->CanResize()
: false;
// Don't allow overlapping resize handles when the window is maximized or
// fullscreen, as it can't be resized in those states.
int resize_border =
display::win::GetScreenWin()->GetSystemMetricsInDIP(SM_CXSIZEFRAME);
int frame_component = GetHTComponentForFrame(
point, gfx::Insets(resize_border), kResizeAreaCornerSize - resize_border,
kResizeAreaCornerSize - resize_border, can_ever_resize);
if (frame_component != HTNOWHERE) {
return frame_component;
}
int client_component = widget_->client_view()->NonClientHitTest(point);
if (client_component != HTNOWHERE) {
return client_component;
}
// Caption is a safe default.
return HTCAPTION;
}
gfx::Size AppWindowFrameViewWin::CalculatePreferredSize(
const views::SizeBounds& available_size) const {
gfx::Size pref = widget_->client_view()->GetPreferredSize(available_size);
gfx::Rect bounds(0, 0, pref.width(), pref.height());
return widget_->non_client_view()
->GetWindowBoundsForClientBounds(bounds)
.size();
}
gfx::Size AppWindowFrameViewWin::GetMinimumSize() const {
gfx::Size min_size = widget_->client_view()->GetMinimumSize();
gfx::Insets insets = GetFrameInsets();
min_size.Enlarge(insets.left() + insets.right(),
insets.top() + insets.bottom());
return min_size;
}
gfx::Size AppWindowFrameViewWin::GetMaximumSize() const {
gfx::Size max_size = widget_->client_view()->GetMaximumSize();
gfx::Insets insets = GetFrameInsets();
const int frame_thickness = ui::GetFrameThicknessFromWindow(
HWNDForView(this), MONITOR_DEFAULTTONEAREST);
insets += GetClientAreaInsets(frame_thickness);
if (max_size.width()) {
max_size.Enlarge(insets.left() + insets.right(), 0);
}
if (max_size.height()) {
max_size.Enlarge(0, insets.top() + insets.bottom());
}
return max_size;
}
BEGIN_METADATA(AppWindowFrameViewWin)
END_METADATA
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