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chromium / chromium / src / 4e30bcad88078b5b82743a51601aa6aa0ce40a8e / . / src / chrome / views / custom_frame_window.cc
blob: 5896b245f5d44271e238b959da4e679a9a42b724 [file] [log] [blame]
// Copyright (c) 2006-2008 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/views/custom_frame_window.h"
#include "base/gfx/point.h"
#include "base/gfx/size.h"
#include "base/win_util.h"
#include "chrome/app/theme/theme_resources.h"
#include "chrome/common/gfx/path.h"
#include "chrome/common/gfx/chrome_canvas.h"
#include "chrome/common/gfx/chrome_font.h"
#include "chrome/common/l10n_util.h"
#include "chrome/common/resource_bundle.h"
#include "chrome/common/win_util.h"
#include "chrome/views/button.h"
#include "chrome/views/client_view.h"
#include "chrome/views/native_button.h"
#include "chrome/views/non_client_view.h"
#include "chrome/views/root_view.h"
#include "chrome/views/window_delegate.h"
#include "chrome/views/window_resources.h"
#include "generated_resources.h"
namespace views {
// A scoping class that prevents a window from being able to redraw in response
// to invalidations that may occur within it for the lifetime of the object.
//
// Why would we want such a thing? Well, it turns out Windows has some
// "unorthodox" behavior when it comes to painting its non-client areas.
// Occasionally, Windows will paint portions of the default non-client area
// right over the top of the custom frame. This is not simply fixed by handling
// WM_NCPAINT/WM_PAINT, with some investigation it turns out that this
// rendering is being done *inside* the default implementation of some message
// handlers and functions:
// . WM_SETTEXT
// . WM_SETICON
// . WM_NCLBUTTONDOWN
// . EnableMenuItem, called from our WM_INITMENU handler
// The solution is to handle these messages and call DefWindowProc ourselves,
// but prevent the window from being able to update itself for the duration of
// the call. We do this with this class, which automatically calls its
// associated CustomFrameWindow's lock and unlock functions as it is created
// and destroyed. See documentation in those methods for the technique used.
//
// IMPORTANT: Do not use this scoping object for large scopes or periods of
// time! IT WILL PREVENT THE WINDOW FROM BEING REDRAWN! (duh).
//
// I would love to hear Raymond Chen's explanation for all this. And maybe a
// list of other messages that this applies to ;-)
class CustomFrameWindow::ScopedRedrawLock {
public:
explicit ScopedRedrawLock(CustomFrameWindow* window) : window_(window) {
window_->LockUpdates();
}
~ScopedRedrawLock() {
window_->UnlockUpdates();
}
private:
// The window having its style changed.
CustomFrameWindow* window_;
};
HCURSOR CustomFrameWindow::resize_cursors_[6];
// An enumeration of bitmap resources used by this window.
enum {
FRAME_PART_BITMAP_FIRST = 0, // Must be first.
// Window Controls.
FRAME_CLOSE_BUTTON_ICON,
FRAME_CLOSE_BUTTON_ICON_H,
FRAME_CLOSE_BUTTON_ICON_P,
FRAME_CLOSE_BUTTON_ICON_SA,
FRAME_CLOSE_BUTTON_ICON_SA_H,
FRAME_CLOSE_BUTTON_ICON_SA_P,
FRAME_RESTORE_BUTTON_ICON,
FRAME_RESTORE_BUTTON_ICON_H,
FRAME_RESTORE_BUTTON_ICON_P,
FRAME_MAXIMIZE_BUTTON_ICON,
FRAME_MAXIMIZE_BUTTON_ICON_H,
FRAME_MAXIMIZE_BUTTON_ICON_P,
FRAME_MINIMIZE_BUTTON_ICON,
FRAME_MINIMIZE_BUTTON_ICON_H,
FRAME_MINIMIZE_BUTTON_ICON_P,
// Window Frame Border.
FRAME_BOTTOM_EDGE,
FRAME_BOTTOM_LEFT_CORNER,
FRAME_BOTTOM_RIGHT_CORNER,
FRAME_LEFT_EDGE,
FRAME_RIGHT_EDGE,
FRAME_TOP_EDGE,
FRAME_TOP_LEFT_CORNER,
FRAME_TOP_RIGHT_CORNER,
// Client Edge Border.
FRAME_CLIENT_EDGE_TOP_LEFT,
FRAME_CLIENT_EDGE_TOP,
FRAME_CLIENT_EDGE_TOP_RIGHT,
FRAME_CLIENT_EDGE_RIGHT,
FRAME_CLIENT_EDGE_BOTTOM_RIGHT,
FRAME_CLIENT_EDGE_BOTTOM,
FRAME_CLIENT_EDGE_BOTTOM_LEFT,
FRAME_CLIENT_EDGE_LEFT,
FRAME_PART_BITMAP_COUNT // Must be last.
};
class ActiveWindowResources : public WindowResources {
public:
ActiveWindowResources() {
InitClass();
}
virtual ~ActiveWindowResources() {
}
// WindowResources implementation:
virtual SkBitmap* GetPartBitmap(FramePartBitmap part) const {
return standard_frame_bitmaps_[part];
}
private:
static void InitClass() {
static bool initialized = false;
if (!initialized) {
static const int kFramePartBitmapIds[] = {
0,
IDR_CLOSE, IDR_CLOSE_H, IDR_CLOSE_P,
IDR_CLOSE_SA, IDR_CLOSE_SA_H, IDR_CLOSE_SA_P,
IDR_RESTORE, IDR_RESTORE_H, IDR_RESTORE_P,
IDR_MAXIMIZE, IDR_MAXIMIZE_H, IDR_MAXIMIZE_P,
IDR_MINIMIZE, IDR_MINIMIZE_H, IDR_MINIMIZE_P,
IDR_WINDOW_BOTTOM_CENTER, IDR_WINDOW_BOTTOM_LEFT_CORNER,
IDR_WINDOW_BOTTOM_RIGHT_CORNER, IDR_WINDOW_LEFT_SIDE,
IDR_WINDOW_RIGHT_SIDE, IDR_WINDOW_TOP_CENTER,
IDR_WINDOW_TOP_LEFT_CORNER, IDR_WINDOW_TOP_RIGHT_CORNER,
IDR_APP_TOP_LEFT, IDR_APP_TOP_CENTER, IDR_APP_TOP_RIGHT,
IDR_CONTENT_RIGHT_SIDE, IDR_CONTENT_BOTTOM_RIGHT_CORNER,
IDR_CONTENT_BOTTOM_CENTER, IDR_CONTENT_BOTTOM_LEFT_CORNER,
IDR_CONTENT_LEFT_SIDE,
0
};
ResourceBundle& rb = ResourceBundle::GetSharedInstance();
for (int i = 0; i < FRAME_PART_BITMAP_COUNT; ++i) {
int id = kFramePartBitmapIds[i];
if (id != 0)
standard_frame_bitmaps_[i] = rb.GetBitmapNamed(id);
}
initialized = true;
}
}
static SkBitmap* standard_frame_bitmaps_[FRAME_PART_BITMAP_COUNT];
static ChromeFont title_font_;
DISALLOW_EVIL_CONSTRUCTORS(ActiveWindowResources);
};
class InactiveWindowResources : public WindowResources {
public:
InactiveWindowResources() {
InitClass();
}
virtual ~InactiveWindowResources() {
}
// WindowResources implementation:
virtual SkBitmap* GetPartBitmap(FramePartBitmap part) const {
return standard_frame_bitmaps_[part];
}
private:
static void InitClass() {
static bool initialized = false;
if (!initialized) {
static const int kFramePartBitmapIds[] = {
0,
IDR_CLOSE, IDR_CLOSE_H, IDR_CLOSE_P,
IDR_CLOSE_SA, IDR_CLOSE_SA_H, IDR_CLOSE_SA_P,
IDR_RESTORE, IDR_RESTORE_H, IDR_RESTORE_P,
IDR_MAXIMIZE, IDR_MAXIMIZE_H, IDR_MAXIMIZE_P,
IDR_MINIMIZE, IDR_MINIMIZE_H, IDR_MINIMIZE_P,
IDR_DEWINDOW_BOTTOM_CENTER, IDR_DEWINDOW_BOTTOM_LEFT_CORNER,
IDR_DEWINDOW_BOTTOM_RIGHT_CORNER, IDR_DEWINDOW_LEFT_SIDE,
IDR_DEWINDOW_RIGHT_SIDE, IDR_DEWINDOW_TOP_CENTER,
IDR_DEWINDOW_TOP_LEFT_CORNER, IDR_DEWINDOW_TOP_RIGHT_CORNER,
IDR_APP_TOP_LEFT, IDR_APP_TOP_CENTER, IDR_APP_TOP_RIGHT,
IDR_CONTENT_RIGHT_SIDE, IDR_CONTENT_BOTTOM_RIGHT_CORNER,
IDR_CONTENT_BOTTOM_CENTER, IDR_CONTENT_BOTTOM_LEFT_CORNER,
IDR_CONTENT_LEFT_SIDE,
0
};
ResourceBundle& rb = ResourceBundle::GetSharedInstance();
for (int i = 0; i < FRAME_PART_BITMAP_COUNT; ++i) {
int id = kFramePartBitmapIds[i];
if (id != 0)
standard_frame_bitmaps_[i] = rb.GetBitmapNamed(id);
}
initialized = true;
}
}
static SkBitmap* standard_frame_bitmaps_[FRAME_PART_BITMAP_COUNT];
DISALLOW_EVIL_CONSTRUCTORS(InactiveWindowResources);
};
// static
SkBitmap* ActiveWindowResources::standard_frame_bitmaps_[];
SkBitmap* InactiveWindowResources::standard_frame_bitmaps_[];
///////////////////////////////////////////////////////////////////////////////
//
// DefaultNonClientView
//
// A ChromeView that provides the "frame" for CustomFrameWindows. This means
// rendering the non-standard window caption, border, and controls.
//
////////////////////////////////////////////////////////////////////////////////
class DefaultNonClientView : public NonClientView,
public BaseButton::ButtonListener {
public:
explicit DefaultNonClientView(CustomFrameWindow* container);
virtual ~DefaultNonClientView();
// Overridden from CustomFrameWindow::NonClientView:
virtual gfx::Rect CalculateClientAreaBounds(int width, int height) const;
virtual gfx::Size CalculateWindowSizeForClientSize(int width,
int height) const;
virtual CPoint GetSystemMenuPoint() const;
virtual int NonClientHitTest(const gfx::Point& point);
virtual void GetWindowMask(const gfx::Size& size, gfx::Path* window_mask);
virtual void EnableClose(bool enable);
virtual void ResetWindowControls();
// View overrides:
virtual void Paint(ChromeCanvas* canvas);
virtual void Layout();
virtual gfx::Size GetPreferredSize();
virtual void ViewHierarchyChanged(bool is_add, View* parent, View* child);
// BaseButton::ButtonListener implementation:
virtual void ButtonPressed(BaseButton* sender);
private:
// Updates the system menu icon button.
void SetWindowIcon(SkBitmap window_icon);
// Returns the height of the non-client area at the top of the window (the
// title bar, etc).
int CalculateContentsTop() const;
// Paint various sub-components of this view.
void PaintFrameBorder(ChromeCanvas* canvas);
void PaintMaximizedFrameBorder(ChromeCanvas* canvas);
void PaintClientEdge(ChromeCanvas* canvas);
// Layout various sub-components of this view.
void LayoutWindowControls();
void LayoutTitleBar();
void LayoutClientView();
// Returns the resource collection to be used when rendering the window.
WindowResources* resources() const {
return container_->is_active() || paint_as_active() ? active_resources_
: inactive_resources_;
}
// The View that provides the background for the window, and optionally
// dialog buttons. Note: the non-client view does _not_ own this view, the
// container does.
ClientView* client_view_;
// The layout rect of the title, if visible.
gfx::Rect title_bounds_;
// Window controls.
Button* close_button_;
Button* restore_button_;
Button* maximize_button_;
Button* minimize_button_;
Button* system_menu_button_; // Uses the window icon if visible.
bool should_show_minmax_buttons_;
// The window icon.
SkBitmap window_icon_;
// The window that owns this view.
CustomFrameWindow* container_;
// Initialize various static resources.
static void InitClass();
static WindowResources* active_resources_;
static WindowResources* inactive_resources_;
static ChromeFont title_font_;
DISALLOW_EVIL_CONSTRUCTORS(DefaultNonClientView);
};
// static
WindowResources* DefaultNonClientView::active_resources_ = NULL;
WindowResources* DefaultNonClientView::inactive_resources_ = NULL;
ChromeFont DefaultNonClientView::title_font_;
static const int kWindowControlsTopOffset = 1;
static const int kWindowControlsRightOffset = 5;
static const int kWindowControlsTopZoomedOffset = 1;
static const int kWindowControlsRightZoomedOffset = 5;
static const int kWindowTopMarginZoomed = 1;
static const int kWindowIconLeftOffset = 5;
static const int kWindowIconTopOffset = 5;
static const int kTitleTopOffset = 6;
static const int kWindowIconTitleSpacing = 3;
static const int kTitleBottomSpacing = 6;
static const int kNoTitleTopSpacing = 8;
static const int kResizeAreaSize = 5;
static const int kResizeAreaNorthSize = 3;
static const int kResizeAreaCornerSize = 16;
static const int kWindowHorizontalBorderSize = 4;
static const int kWindowVerticalBorderSize = 4;
///////////////////////////////////////////////////////////////////////////////
// DefaultNonClientView, public:
DefaultNonClientView::DefaultNonClientView(
CustomFrameWindow* container)
: NonClientView(),
client_view_(NULL),
close_button_(new Button),
restore_button_(new Button),
maximize_button_(new Button),
minimize_button_(new Button),
system_menu_button_(new Button),
should_show_minmax_buttons_(false),
container_(container) {
InitClass();
WindowResources* resources = active_resources_;
close_button_->SetImage(
Button::BS_NORMAL, resources->GetPartBitmap(FRAME_CLOSE_BUTTON_ICON));
close_button_->SetImage(
Button::BS_HOT, resources->GetPartBitmap(FRAME_CLOSE_BUTTON_ICON_H));
close_button_->SetImage(
Button::BS_PUSHED, resources->GetPartBitmap(FRAME_CLOSE_BUTTON_ICON_P));
close_button_->SetListener(this, -1);
AddChildView(close_button_);
restore_button_->SetImage(
Button::BS_NORMAL, resources->GetPartBitmap(FRAME_RESTORE_BUTTON_ICON));
restore_button_->SetImage(
Button::BS_HOT, resources->GetPartBitmap(FRAME_RESTORE_BUTTON_ICON_H));
restore_button_->SetImage(
Button::BS_PUSHED, resources->GetPartBitmap(FRAME_RESTORE_BUTTON_ICON_P));
restore_button_->SetListener(this, -1);
AddChildView(restore_button_);
maximize_button_->SetImage(
Button::BS_NORMAL, resources->GetPartBitmap(FRAME_MAXIMIZE_BUTTON_ICON));
maximize_button_->SetImage(
Button::BS_HOT, resources->GetPartBitmap(FRAME_MAXIMIZE_BUTTON_ICON_H));
maximize_button_->SetImage(
Button::BS_PUSHED, resources->GetPartBitmap(FRAME_MAXIMIZE_BUTTON_ICON_P));
maximize_button_->SetListener(this, -1);
AddChildView(maximize_button_);
minimize_button_->SetImage(
Button::BS_NORMAL, resources->GetPartBitmap(FRAME_MINIMIZE_BUTTON_ICON));
minimize_button_->SetImage(
Button::BS_HOT, resources->GetPartBitmap(FRAME_MINIMIZE_BUTTON_ICON_H));
minimize_button_->SetImage(
Button::BS_PUSHED, resources->GetPartBitmap(FRAME_MINIMIZE_BUTTON_ICON_P));
minimize_button_->SetListener(this, -1);
AddChildView(minimize_button_);
should_show_minmax_buttons_ = container->window_delegate()->CanMaximize();
AddChildView(system_menu_button_);
}
DefaultNonClientView::~DefaultNonClientView() {
}
///////////////////////////////////////////////////////////////////////////////
// DefaultNonClientView, CustomFrameWindow::NonClientView implementation:
gfx::Rect DefaultNonClientView::CalculateClientAreaBounds(
int width, int height) const {
int top_margin = CalculateContentsTop();
return gfx::Rect(kWindowHorizontalBorderSize, top_margin,
std::max(0, width - (2 * kWindowHorizontalBorderSize)),
std::max(0, height - top_margin - kWindowVerticalBorderSize));
}
gfx::Size DefaultNonClientView::CalculateWindowSizeForClientSize(
int width, int height) const {
int contents_top = CalculateContentsTop();
return gfx::Size(
width + (2 * kWindowHorizontalBorderSize),
height + kWindowVerticalBorderSize + contents_top);
}
CPoint DefaultNonClientView::GetSystemMenuPoint() const {
CPoint system_menu_point(
system_menu_button_->x(),
system_menu_button_->y() + system_menu_button_->height());
MapWindowPoints(container_->GetHWND(), HWND_DESKTOP, &system_menu_point, 1);
return system_menu_point;
}
// There is a subtle point that needs to be explained regarding the manner in
// which this function returns the HT* code Windows is expecting:
//
// |point| contains the cursor position in this View's coordinate system. If
// this View uses a right-to-left UI layout, the position represented by
// |point| will not reflect the UI mirroring because we don't create the
// container's HWND with WS_EX_LAYOUTRTL. Therefore, whenever the cursor
// position resides within the boundaries of one of our child Views (for
// example, the close_button_), we must retrieve the child View bounds such
// that bound are mirrored if the View uses right-to-left UI layout. This is
// why this function passes APPLY_MIRRORING_TRANSFORMATION as the |settings|
// whenever it calls GetBounds().
int DefaultNonClientView::NonClientHitTest(const gfx::Point& point) {
// First see if it's within the grow box area, since that overlaps the client
// bounds.
int component = container_->client_view()->NonClientHitTest(point);
if (component != HTNOWHERE)
return component;
// Then see if the point is within any of the window controls.
gfx::Rect button_bounds =
close_button_->GetBounds(APPLY_MIRRORING_TRANSFORMATION);
if (button_bounds.Contains(point))
return HTCLOSE;
button_bounds = restore_button_->GetBounds(APPLY_MIRRORING_TRANSFORMATION);
if (button_bounds.Contains(point))
return HTMAXBUTTON;
button_bounds = maximize_button_->GetBounds(APPLY_MIRRORING_TRANSFORMATION);
if (button_bounds.Contains(point))
return HTMAXBUTTON;
button_bounds = minimize_button_->GetBounds(APPLY_MIRRORING_TRANSFORMATION);
if (button_bounds.Contains(point))
return HTMINBUTTON;
button_bounds =
system_menu_button_->GetBounds(APPLY_MIRRORING_TRANSFORMATION);
if (button_bounds.Contains(point))
return HTSYSMENU;
component = GetHTComponentForFrame(
point,
kResizeAreaSize,
kResizeAreaCornerSize,
kResizeAreaNorthSize,
container_->window_delegate()->CanResize());
if (component == HTNOWHERE) {
// Finally fall back to the caption.
if (bounds().Contains(point))
component = HTCAPTION;
// Otherwise, the point is outside the window's bounds.
}
return component;
}
void DefaultNonClientView::GetWindowMask(const gfx::Size& size,
gfx::Path* window_mask) {
DCHECK(window_mask);
// Redefine the window visible region for the new size.
window_mask->moveTo(0, 3);
window_mask->lineTo(1, 1);
window_mask->lineTo(3, 0);
window_mask->lineTo(SkIntToScalar(size.width() - 3), 0);
window_mask->lineTo(SkIntToScalar(size.width() - 1), 1);
window_mask->lineTo(SkIntToScalar(size.width() - 1), 3);
window_mask->lineTo(SkIntToScalar(size.width()), 3);
window_mask->lineTo(SkIntToScalar(size.width()),
SkIntToScalar(size.height()));
window_mask->lineTo(0, SkIntToScalar(size.height()));
window_mask->close();
}
void DefaultNonClientView::EnableClose(bool enable) {
close_button_->SetEnabled(enable);
}
void DefaultNonClientView::ResetWindowControls() {
restore_button_->SetState(Button::BS_NORMAL);
minimize_button_->SetState(Button::BS_NORMAL);
maximize_button_->SetState(Button::BS_NORMAL);
// The close button isn't affected by this constraint.
}
///////////////////////////////////////////////////////////////////////////////
// DefaultNonClientView, View overrides:
void DefaultNonClientView::Paint(ChromeCanvas* canvas) {
if (container_->IsMaximized()) {
PaintMaximizedFrameBorder(canvas);
} else {
PaintFrameBorder(canvas);
}
PaintClientEdge(canvas);
WindowDelegate* d = container_->window_delegate();
if (d->ShouldShowWindowTitle()) {
canvas->DrawStringInt(d->GetWindowTitle(), title_font_, SK_ColorWHITE,
title_bounds_.x(), title_bounds_.y(),
title_bounds_.width(), title_bounds_.height());
}
}
void DefaultNonClientView::Layout() {
LayoutWindowControls();
LayoutTitleBar();
LayoutClientView();
SchedulePaint();
}
gfx::Size DefaultNonClientView::GetPreferredSize() {
gfx::Size prefsize = container_->client_view()->GetPreferredSize();
prefsize.Enlarge(2 * kWindowHorizontalBorderSize,
CalculateContentsTop() + kWindowVerticalBorderSize);
return prefsize;
}
void DefaultNonClientView::ViewHierarchyChanged(bool is_add,
View* parent,
View* child) {
// Add our Client View as we are added to the Widget so that if we are
// subsequently resized all the parent-child relationships are established.
if (is_add && GetWidget() && child == this)
AddChildView(container_->client_view());
}
///////////////////////////////////////////////////////////////////////////////
// DefaultNonClientView, BaseButton::ButtonListener implementation:
void DefaultNonClientView::ButtonPressed(BaseButton* sender) {
if (sender == close_button_) {
container_->ExecuteSystemMenuCommand(SC_CLOSE);
} else if (sender == minimize_button_) {
container_->ExecuteSystemMenuCommand(SC_MINIMIZE);
} else if (sender == maximize_button_) {
container_->ExecuteSystemMenuCommand(SC_MAXIMIZE);
} else if (sender == restore_button_) {
container_->ExecuteSystemMenuCommand(SC_RESTORE);
}
}
///////////////////////////////////////////////////////////////////////////////
// DefaultNonClientView, private:
void DefaultNonClientView::SetWindowIcon(SkBitmap window_icon) {
// TODO(beng): (Cleanup) remove this persistent cache of the icon when Button
// takes a SkBitmap rather than SkBitmap*.
window_icon_ = window_icon;
system_menu_button_->SetImage(Button::BS_NORMAL, &window_icon);
}
int DefaultNonClientView::CalculateContentsTop() const {
if (container_->window_delegate()->ShouldShowWindowTitle())
return kTitleTopOffset + title_font_.height() + kTitleBottomSpacing;
return kNoTitleTopSpacing;
}
void DefaultNonClientView::PaintFrameBorder(ChromeCanvas* canvas) {
SkBitmap* top_left_corner =
resources()->GetPartBitmap(FRAME_TOP_LEFT_CORNER);
SkBitmap* top_right_corner =
resources()->GetPartBitmap(FRAME_TOP_RIGHT_CORNER);
SkBitmap* top_edge = resources()->GetPartBitmap(FRAME_TOP_EDGE);
SkBitmap* right_edge = resources()->GetPartBitmap(FRAME_RIGHT_EDGE);
SkBitmap* left_edge = resources()->GetPartBitmap(FRAME_LEFT_EDGE);
SkBitmap* bottom_left_corner =
resources()->GetPartBitmap(FRAME_BOTTOM_LEFT_CORNER);
SkBitmap* bottom_right_corner =
resources()->GetPartBitmap(FRAME_BOTTOM_RIGHT_CORNER);
SkBitmap* bottom_edge = resources()->GetPartBitmap(FRAME_BOTTOM_EDGE);
// Top.
canvas->DrawBitmapInt(*top_left_corner, 0, 0);
canvas->TileImageInt(*top_edge, top_left_corner->width(), 0,
width() - top_right_corner->width(), top_edge->height());
canvas->DrawBitmapInt(*top_right_corner,
width() - top_right_corner->width(), 0);
// Right.
int top_stack_height = top_right_corner->height();
canvas->TileImageInt(*right_edge, width() - right_edge->width(),
top_stack_height, right_edge->width(),
height() - top_stack_height -
bottom_right_corner->height());
// Bottom.
canvas->DrawBitmapInt(*bottom_right_corner,
width() - bottom_right_corner->width(),
height() - bottom_right_corner->height());
canvas->TileImageInt(*bottom_edge, bottom_left_corner->width(),
height() - bottom_edge->height(),
width() - bottom_left_corner->width() -
bottom_right_corner->width(),
bottom_edge->height());
canvas->DrawBitmapInt(*bottom_left_corner, 0,
height() - bottom_left_corner->height());
// Left.
top_stack_height = top_left_corner->height();
canvas->TileImageInt(*left_edge, 0, top_stack_height, left_edge->width(),
height() - top_stack_height -
bottom_left_corner->height());
}
void DefaultNonClientView::PaintMaximizedFrameBorder(
ChromeCanvas* canvas) {
SkBitmap* top_edge = resources()->GetPartBitmap(FRAME_TOP_EDGE);
SkBitmap* bottom_edge =
resources()->GetPartBitmap(FRAME_BOTTOM_EDGE);
canvas->TileImageInt(*top_edge, 0, 0, width(), top_edge->height());
canvas->TileImageInt(*bottom_edge, 0, height() - bottom_edge->height(),
width(), bottom_edge->height());
}
void DefaultNonClientView::PaintClientEdge(ChromeCanvas* canvas) {
SkBitmap* top_left = resources()->GetPartBitmap(FRAME_CLIENT_EDGE_TOP_LEFT);
SkBitmap* top = resources()->GetPartBitmap(FRAME_CLIENT_EDGE_TOP);
SkBitmap* top_right = resources()->GetPartBitmap(FRAME_CLIENT_EDGE_TOP_RIGHT);
SkBitmap* right = resources()->GetPartBitmap(FRAME_CLIENT_EDGE_RIGHT);
SkBitmap* bottom_right =
resources()->GetPartBitmap(FRAME_CLIENT_EDGE_BOTTOM_RIGHT);
SkBitmap* bottom = resources()->GetPartBitmap(FRAME_CLIENT_EDGE_BOTTOM);
SkBitmap* bottom_left =
resources()->GetPartBitmap(FRAME_CLIENT_EDGE_BOTTOM_LEFT);
SkBitmap* left = resources()->GetPartBitmap(FRAME_CLIENT_EDGE_LEFT);
gfx::Rect client_area_bounds = container_->client_view()->bounds();
canvas->DrawBitmapInt(*top_left, client_area_bounds.x() - top_left->width(),
client_area_bounds.y() - top->height());
canvas->TileImageInt(*top, client_area_bounds.x(),
client_area_bounds.y() - top->height(),
client_area_bounds.width(), top->height());
canvas->DrawBitmapInt(*top_right, client_area_bounds.right(),
client_area_bounds.y() - top->height());
canvas->TileImageInt(*right, client_area_bounds.right(),
client_area_bounds.y() - top->height() +
top_right->height(),
right->width(), client_area_bounds.height());
canvas->DrawBitmapInt(*bottom_right, client_area_bounds.right(),
client_area_bounds.bottom());
canvas->TileImageInt(*bottom, client_area_bounds.x(),
client_area_bounds.bottom(),
client_area_bounds.width(), bottom_right->height());
canvas->DrawBitmapInt(*bottom_left,
client_area_bounds.x() - bottom_left->width(),
client_area_bounds.bottom());
canvas->TileImageInt(*left, client_area_bounds.x() - left->width(),
client_area_bounds.y() - top->height() +
top_left->height(),
left->width(), client_area_bounds.height());
}
void DefaultNonClientView::LayoutWindowControls() {
gfx::Size ps;
if (container_->IsMaximized() || container_->IsMinimized()) {
maximize_button_->SetVisible(false);
restore_button_->SetVisible(true);
}
if (container_->IsMaximized()) {
ps = close_button_->GetPreferredSize();
close_button_->SetImageAlignment(Button::ALIGN_LEFT, Button::ALIGN_BOTTOM);
close_button_->SetBounds(
width() - ps.width() - kWindowControlsRightZoomedOffset,
0, ps.width() + kWindowControlsRightZoomedOffset,
ps.height() + kWindowControlsTopZoomedOffset);
if (should_show_minmax_buttons_) {
ps = restore_button_->GetPreferredSize();
restore_button_->SetImageAlignment(Button::ALIGN_LEFT,
Button::ALIGN_BOTTOM);
restore_button_->SetBounds(close_button_->x() - ps.width(), 0,
ps.width(),
ps.height() + kWindowControlsTopZoomedOffset);
ps = minimize_button_->GetPreferredSize();
minimize_button_->SetImageAlignment(Button::ALIGN_LEFT,
Button::ALIGN_BOTTOM);
minimize_button_->SetBounds(restore_button_->x() - ps.width(), 0,
ps.width(),
ps.height() + kWindowControlsTopZoomedOffset);
}
} else if (container_->IsMinimized()) {
ps = close_button_->GetPreferredSize();
close_button_->SetImageAlignment(Button::ALIGN_LEFT, Button::ALIGN_BOTTOM);
close_button_->SetBounds(
width() - ps.width() - kWindowControlsRightZoomedOffset,
0, ps.width() + kWindowControlsRightZoomedOffset,
ps.height() + kWindowControlsTopZoomedOffset);
if (should_show_minmax_buttons_) {
ps = restore_button_->GetPreferredSize();
restore_button_->SetImageAlignment(Button::ALIGN_LEFT,
Button::ALIGN_BOTTOM);
restore_button_->SetBounds(close_button_->x() - ps.width(), 0,
ps.width(),
ps.height() + kWindowControlsTopZoomedOffset);
ps = minimize_button_->GetPreferredSize();
minimize_button_->SetImageAlignment(Button::ALIGN_LEFT,
Button::ALIGN_BOTTOM);
minimize_button_->SetBounds(restore_button_->x() - ps.width(), 0,
ps.width(),
ps.height() +
kWindowControlsTopZoomedOffset);
}
} else {
ps = close_button_->GetPreferredSize();
close_button_->SetImageAlignment(Button::ALIGN_LEFT, Button::ALIGN_TOP);
close_button_->SetBounds(width() - kWindowControlsRightOffset - ps.width(),
kWindowControlsTopOffset, ps.width(),
ps.height());
if (should_show_minmax_buttons_) {
close_button_->SetImage(
Button::BS_NORMAL,
active_resources_->GetPartBitmap(FRAME_CLOSE_BUTTON_ICON));
close_button_->SetImage(
Button::BS_HOT,
active_resources_->GetPartBitmap(FRAME_CLOSE_BUTTON_ICON_H));
close_button_->SetImage(
Button::BS_PUSHED,
active_resources_->GetPartBitmap(FRAME_CLOSE_BUTTON_ICON_P));
restore_button_->SetVisible(false);
maximize_button_->SetVisible(true);
ps = maximize_button_->GetPreferredSize();
maximize_button_->SetImageAlignment(Button::ALIGN_LEFT,
Button::ALIGN_TOP);
maximize_button_->SetBounds(close_button_->x() - ps.width(),
kWindowControlsTopOffset, ps.width(),
ps.height());
ps = minimize_button_->GetPreferredSize();
minimize_button_->SetImageAlignment(Button::ALIGN_LEFT,
Button::ALIGN_TOP);
minimize_button_->SetBounds(maximize_button_->x() - ps.width(),
kWindowControlsTopOffset, ps.width(),
ps.height());
}
}
if (!should_show_minmax_buttons_) {
close_button_->SetImage(
Button::BS_NORMAL,
active_resources_->GetPartBitmap(FRAME_CLOSE_BUTTON_ICON_SA));
close_button_->SetImage(
Button::BS_HOT,
active_resources_->GetPartBitmap(FRAME_CLOSE_BUTTON_ICON_SA_H));
close_button_->SetImage(
Button::BS_PUSHED,
active_resources_->GetPartBitmap(FRAME_CLOSE_BUTTON_ICON_SA_P));
restore_button_->SetVisible(false);
maximize_button_->SetVisible(false);
minimize_button_->SetVisible(false);
}
}
void DefaultNonClientView::LayoutTitleBar() {
int top_offset = container_->IsMaximized() ? kWindowTopMarginZoomed : 0;
WindowDelegate* d = container_->window_delegate();
// Size the window icon, if visible.
if (d->ShouldShowWindowIcon()) {
system_menu_button_->SetVisible(true);
gfx::Size ps = system_menu_button_->GetPreferredSize();
system_menu_button_->SetBounds(
kWindowIconLeftOffset, kWindowIconTopOffset + top_offset, ps.width(),
ps.height());
} else {
// Put the menu in the right place at least even if it is hidden so we
// can size the title based on its position.
system_menu_button_->SetBounds(kWindowIconLeftOffset,
kWindowIconTopOffset, 0, 0);
}
// Size the title, if visible.
if (d->ShouldShowWindowTitle()) {
gfx::Rect system_menu_bounds = system_menu_button_->bounds();
int spacing = d->ShouldShowWindowIcon() ? kWindowIconTitleSpacing : 0;
int title_right = should_show_minmax_buttons_ ?
minimize_button_->x() : close_button_->x();
int title_left = system_menu_bounds.right() + spacing;
title_bounds_.SetRect(title_left, kTitleTopOffset + top_offset,
std::max(0, static_cast<int>(title_right - system_menu_bounds.right())),
title_font_.height());
// We draw the custom frame window's title directly rather than using a
// views::Label child view. Therefore, we have to mirror the title
// position manually if the View's UI layout is right-to-left. Child Views
// are automatically mirrored, which means that the parent view doesn't
// need to manually modify their position depending on the View's UI
// layout.
//
// Mirroring the title's position manually is certainly far from being
// elegant, but we have no choice (other than changing the
// DefaultNonClientView subclass to use a ChromeView::Label as a child View
// instead of drawing the title's text directly on the canvas).
title_bounds_.set_x(MirroredLeftPointForRect(title_bounds_));
// Center the icon within the height of the title if the title is taller.
int delta_y = title_bounds_.height() - system_menu_button_->height();
if (delta_y > 0) {
int new_y = title_bounds_.y() + static_cast<int>(delta_y / 2);
system_menu_button_->SetBounds(system_menu_button_->x(), new_y,
system_menu_button_->width(),
system_menu_button_->height());
}
}
}
void DefaultNonClientView::LayoutClientView() {
gfx::Rect client_bounds = CalculateClientAreaBounds(width(), height());
container_->client_view()->SetBounds(client_bounds);
}
// static
void DefaultNonClientView::InitClass() {
static bool initialized = false;
if (!initialized) {
active_resources_ = new ActiveWindowResources;
inactive_resources_ = new InactiveWindowResources;
title_font_ = win_util::GetWindowTitleFont();
initialized = true;
}
}
///////////////////////////////////////////////////////////////////////////////
// NonClientViewLayout
class NonClientViewLayout : public LayoutManager {
public:
// The size of the default window border and padding used by Windows Vista
// with DWM disabled when clipping the window for maximized display.
// TODO(beng): figure out how to get this programmatically, since it varies
// with adjustments to the Windows Border/Padding setting.
static const int kBorderAndPadding = 8;
NonClientViewLayout(View* child, Window* window)
: child_(child),
window_(window) {
}
virtual ~NonClientViewLayout() {}
// Overridden from LayoutManager:
virtual void Layout(View* host) {
int horizontal_border_width =
window_->IsMaximized() ? kBorderAndPadding : 0;
int vertical_border_height =
window_->IsMaximized() ? kBorderAndPadding : 0;
child_->SetBounds(horizontal_border_width, vertical_border_height,
host->width() - (2 * horizontal_border_width),
host->height() - (2 * vertical_border_height));
}
virtual gfx::Size GetPreferredSize(View* host) {
return child_->GetPreferredSize();
}
private:
View* child_;
Window* window_;
DISALLOW_COPY_AND_ASSIGN(NonClientViewLayout);
};
///////////////////////////////////////////////////////////////////////////////
// CustomFrameWindow, public:
CustomFrameWindow::CustomFrameWindow(WindowDelegate* window_delegate)
: Window(window_delegate),
is_active_(false),
lock_updates_(false),
saved_window_style_(0) {
InitClass();
non_client_view_ = new DefaultNonClientView(this);
}
CustomFrameWindow::CustomFrameWindow(WindowDelegate* window_delegate,
NonClientView* non_client_view)
: Window(window_delegate) {
InitClass();
non_client_view_ = non_client_view;
}
CustomFrameWindow::~CustomFrameWindow() {
}
///////////////////////////////////////////////////////////////////////////////
// CustomFrameWindow, Window overrides:
void CustomFrameWindow::Init(HWND parent, const gfx::Rect& bounds) {
// TODO(beng): (Cleanup) Right now, the only way to specify a different
// non-client view is to subclass this object and provide one
// by setting this member before calling Init.
if (!non_client_view_)
non_client_view_ = new DefaultNonClientView(this);
Window::Init(parent, bounds);
// Windows Vista non-Aero-glass does wacky things with maximized windows that
// require a special layout manager to compensate for.
if (win_util::GetWinVersion() >= win_util::WINVERSION_VISTA) {
GetRootView()->SetLayoutManager(
new NonClientViewLayout(non_client_view_, this));
}
ResetWindowRegion();
}
void CustomFrameWindow::SetClientView(ClientView* cv) {
DCHECK(cv && !client_view() && GetHWND());
set_client_view(cv);
// For a CustomFrameWindow, the non-client view is the root.
WidgetWin::SetContentsView(non_client_view_);
// When the non client view is added to the view hierarchy, it will cause the
// client view to be added as well.
}
gfx::Size CustomFrameWindow::CalculateWindowSizeForClientSize(
const gfx::Size& client_size) const {
return non_client_view_->CalculateWindowSizeForClientSize(
client_size.width(), client_size.height());
}
void CustomFrameWindow::UpdateWindowTitle() {
// Layout winds up causing the title to be re-validated during
// string measurement.
non_client_view_->Layout();
// Must call the base class too so that places like the Task Bar get updated.
Window::UpdateWindowTitle();
}
void CustomFrameWindow::UpdateWindowIcon() {
// The icon will be re-validated during painting.
non_client_view_->SchedulePaint();
// Call the base class so that places like the Task Bar get updated.
Window::UpdateWindowIcon();
}
void CustomFrameWindow::EnableClose(bool enable) {
non_client_view_->EnableClose(enable);
// Make sure the SysMenu changes to reflect this change as well.
Window::EnableClose(enable);
}
void CustomFrameWindow::DisableInactiveRendering(bool disable) {
Window::DisableInactiveRendering(disable);
non_client_view_->set_paint_as_active(disable);
if (!disable)
non_client_view_->SchedulePaint();
}
void CustomFrameWindow::SizeWindowToDefault() {
gfx::Size pref = client_view()->GetPreferredSize();
DCHECK(pref.width() > 0 && pref.height() > 0);
gfx::Size window_size =
non_client_view_->CalculateWindowSizeForClientSize(pref.width(),
pref.height());
win_util::CenterAndSizeWindow(owning_window(), GetHWND(),
window_size.ToSIZE(), false);
}
///////////////////////////////////////////////////////////////////////////////
// CustomFrameWindow, WidgetWin overrides:
static void EnableMenuItem(HMENU menu, UINT command, bool enabled) {
UINT flags = MF_BYCOMMAND | (enabled ? MF_ENABLED : MF_DISABLED | MF_GRAYED);
EnableMenuItem(menu, command, flags);
}
void CustomFrameWindow::OnInitMenu(HMENU menu) {
bool minimized = IsMinimized();
bool maximized = IsMaximized();
bool minimized_or_maximized = minimized || maximized;
ScopedRedrawLock lock(this);
EnableMenuItem(menu, SC_RESTORE,
window_delegate()->CanMaximize() && minimized_or_maximized);
EnableMenuItem(menu, SC_MOVE, !minimized_or_maximized);
EnableMenuItem(menu, SC_SIZE,
window_delegate()->CanResize() && !minimized_or_maximized);
EnableMenuItem(menu, SC_MAXIMIZE,
window_delegate()->CanMaximize() && !maximized);
EnableMenuItem(menu, SC_MINIMIZE,
window_delegate()->CanMaximize() && !minimized);
}
void CustomFrameWindow::OnMouseLeave() {
bool process_mouse_exited = true;
POINT pt;
if (GetCursorPos(&pt)) {
LRESULT ht_component =
::SendMessage(GetHWND(), WM_NCHITTEST, 0, MAKELPARAM(pt.x, pt.y));
if (ht_component != HTNOWHERE) {
// If the mouse moved into a part of the window's non-client area, then
// don't send a mouse exited event since the mouse is still within the
// bounds of the ChromeView that's rendering the frame. Note that we do
// _NOT_ do this for windows with native frames, since in that case the
// mouse really will have left the bounds of the RootView.
process_mouse_exited = false;
}
}
if (process_mouse_exited)
ProcessMouseExited();
}
LRESULT CustomFrameWindow::OnNCActivate(BOOL active) {
is_active_ = !!active;
// We can get WM_NCACTIVATE before we're actually visible. If we're not
// visible, no need to paint.
if (IsWindowVisible(GetHWND())) {
non_client_view_->SchedulePaint();
// We need to force a paint now, as a user dragging a window will block
// painting operations while the move is in progress.
PaintNow(root_view_->GetScheduledPaintRect());
}
return TRUE;
}
LRESULT CustomFrameWindow::OnNCCalcSize(BOOL mode, LPARAM l_param) {
// We need to repaint all when the window bounds change.
return WVR_REDRAW;
}
LRESULT CustomFrameWindow::OnNCHitTest(const CPoint& point) {
// NC points are in screen coordinates.
CPoint temp = point;
MapWindowPoints(HWND_DESKTOP, GetHWND(), &temp, 1);
return non_client_view_->NonClientHitTest(gfx::Point(temp.x, temp.y));
}
struct ClipState {
// The window being painted.
HWND parent;
// DC painting to.
HDC dc;
// Origin of the window in terms of the screen.
int x;
int y;
};
// See comments in OnNCPaint for details of this function.
static BOOL CALLBACK ClipDCToChild(HWND window, LPARAM param) {
ClipState* clip_state = reinterpret_cast<ClipState*>(param);
if (GetParent(window) == clip_state->parent && IsWindowVisible(window)) {
RECT bounds;
GetWindowRect(window, &bounds);
ExcludeClipRect(clip_state->dc,
bounds.left - clip_state->x,
bounds.top - clip_state->y,
bounds.right - clip_state->x,
bounds.bottom - clip_state->y);
}
return TRUE;
}
void CustomFrameWindow::OnNCPaint(HRGN rgn) {
// We have an NC region and need to paint it. We expand the NC region to
// include the dirty region of the root view. This is done to minimize
// paints.
CRect window_rect;
GetWindowRect(&window_rect);
if (window_rect.Width() != root_view_->width() ||
window_rect.Height() != root_view_->height()) {
// If the size of the window differs from the size of the root view it
// means we're being asked to paint before we've gotten a WM_SIZE. This can
// happen when the user is interactively resizing the window. To avoid
// mass flickering we don't do anything here. Once we get the WM_SIZE we'll
// reset the region of the window which triggers another WM_NCPAINT and
// all is well.
return;
}
CRect dirty_region;
// A value of 1 indicates paint all.
if (!rgn || rgn == reinterpret_cast<HRGN>(1)) {
dirty_region = CRect(0, 0, window_rect.Width(), window_rect.Height());
} else {
RECT rgn_bounding_box;
GetRgnBox(rgn, &rgn_bounding_box);
if (!IntersectRect(&dirty_region, &rgn_bounding_box, &window_rect))
return; // Dirty region doesn't intersect window bounds, bale.
// rgn_bounding_box is in screen coordinates. Map it to window coordinates.
OffsetRect(&dirty_region, -window_rect.left, -window_rect.top);
}
// In theory GetDCEx should do what we want, but I couldn't get it to work.
// In particular the docs mentiond DCX_CLIPCHILDREN, but as far as I can tell
// it doesn't work at all. So, instead we get the DC for the window then
// manually clip out the children.
HDC dc = GetWindowDC(GetHWND());
ClipState clip_state;
clip_state.x = window_rect.left;
clip_state.y = window_rect.top;
clip_state.parent = GetHWND();
clip_state.dc = dc;
EnumChildWindows(GetHWND(), &ClipDCToChild,
reinterpret_cast<LPARAM>(&clip_state));
RootView* root_view = GetRootView();
CRect old_paint_region = root_view->GetScheduledPaintRectConstrainedToSize();
if (!old_paint_region.IsRectEmpty()) {
// The root view has a region that needs to be painted. Include it in the
// region we're going to paint.
CRect tmp = dirty_region;
UnionRect(&dirty_region, &tmp, &old_paint_region);
}
root_view->SchedulePaint(gfx::Rect(dirty_region), false);
// ChromeCanvasPaints destructor does the actual painting. As such, wrap the
// following in a block to force paint to occur so that we can release the dc.
{
ChromeCanvasPaint canvas(dc, opaque(), dirty_region.left, dirty_region.top,
dirty_region.Width(), dirty_region.Height());
root_view->ProcessPaint(&canvas);
}
ReleaseDC(GetHWND(), dc);
}
void CustomFrameWindow::OnNCLButtonDown(UINT ht_component,
const CPoint& point) {
switch (ht_component) {
case HTCLOSE:
case HTMINBUTTON:
case HTMAXBUTTON: {
// When the mouse is pressed down in these specific non-client areas, we
// need to tell the RootView to send the mouse pressed event (which sets
// capture, allowing subsequent WM_LBUTTONUP (note, _not_ WM_NCLBUTTONUP)
// to fire so that the appropriate WM_SYSCOMMAND can be sent by the
// applicable button's ButtonListener. We _have_ to do this this way
// rather than letting Windows just send the syscommand itself (as would
// happen if we never did this dance) because for some insane reason
// DefWindowProc for WM_NCLBUTTONDOWN also renders the pressed window
// control button appearance, in the Windows classic style, over our
// view! Ick! By handling this message we prevent Windows from doing this
// undesirable thing, but that means we need to roll the sys-command
// handling ourselves.
ProcessNCMousePress(point, MK_LBUTTON);
return;
}
default:
Window::OnNCLButtonDown(ht_component, point);
/*
if (!IsMsgHandled()) {
// Window::OnNCLButtonDown set the message as unhandled. This normally
// means WidgetWin::ProcessWindowMessage will pass it to
// DefWindowProc. Sadly, DefWindowProc for WM_NCLBUTTONDOWN does weird
// non-client painting, so we need to call it directly here inside a
// scoped update lock.
ScopedRedrawLock lock(this);
DefWindowProc(GetHWND(), WM_NCLBUTTONDOWN, ht_component,
MAKELPARAM(point.x, point.y));
SetMsgHandled(TRUE);
}
*/
break;
}
}
void CustomFrameWindow::OnNCMButtonDown(UINT ht_component,
const CPoint& point) {
if (ht_component == HTCAPTION) {
// When there's only one window and only one tab, the tab area is reported
// to be part of the caption area of the window. However users should still
// be able to middle click that tab to close it so we need to make sure
// these messages reach the View system.
ProcessNCMousePress(point, MK_MBUTTON);
SetMsgHandled(FALSE);
return;
}
WidgetWin::OnNCMButtonDown(ht_component, point);
}
LRESULT CustomFrameWindow::OnNCUAHDrawCaption(UINT msg, WPARAM w_param,
LPARAM l_param) {
// See comment in widget_win.h at the definition of WM_NCUAHDRAWCAPTION for
// an explanation about why we need to handle this message.
SetMsgHandled(TRUE);
return 0;
}
LRESULT CustomFrameWindow::OnNCUAHDrawFrame(UINT msg, WPARAM w_param,
LPARAM l_param) {
// See comment in widget_win.h at the definition of WM_NCUAHDRAWCAPTION for
// an explanation about why we need to handle this message.
SetMsgHandled(TRUE);
return 0;
}
LRESULT CustomFrameWindow::OnSetCursor(HWND window, UINT hittest_code,
UINT message) {
int index = RC_NORMAL;
switch (hittest_code) {
case HTTOP:
case HTBOTTOM:
index = RC_VERTICAL;
break;
case HTTOPLEFT:
case HTBOTTOMRIGHT:
index = RC_NWSE;
break;
case HTTOPRIGHT:
case HTBOTTOMLEFT:
index = RC_NESW;
break;
case HTLEFT:
case HTRIGHT:
index = RC_HORIZONTAL;
break;
case HTCAPTION:
case HTCLIENT:
index = RC_NORMAL;
break;
}
SetCursor(resize_cursors_[index]);
return 0;
}
LRESULT CustomFrameWindow::OnSetIcon(UINT size_type, HICON new_icon) {
ScopedRedrawLock lock(this);
return DefWindowProc(GetHWND(), WM_SETICON, size_type,
reinterpret_cast<LPARAM>(new_icon));
}
LRESULT CustomFrameWindow::OnSetText(const wchar_t* text) {
ScopedRedrawLock lock(this);
return DefWindowProc(GetHWND(), WM_SETTEXT, NULL,
reinterpret_cast<LPARAM>(text));
}
void CustomFrameWindow::OnSize(UINT param, const CSize& size) {
Window::OnSize(param, size);
// ResetWindowRegion is going to trigger WM_NCPAINT. By doing it after we've
// invoked OnSize we ensure the RootView has been layed out.
ResetWindowRegion();
}
void CustomFrameWindow::OnSysCommand(UINT notification_code, CPoint click) {
// Windows uses the 4 lower order bits of |notification_code| for type-
// specific information so we must exclude this when comparing.
static const int sc_mask = 0xFFF0;
if ((notification_code & sc_mask) == SC_MINIMIZE ||
(notification_code & sc_mask) == SC_MAXIMIZE ||
(notification_code & sc_mask) == SC_RESTORE) {
non_client_view_->ResetWindowControls();
} else if ((notification_code & sc_mask) == SC_MOVE ||
(notification_code & sc_mask) == SC_SIZE) {
if (lock_updates_) {
// We were locked, before entering a resize or move modal loop. Now that
// we've begun to move the window, we need to unlock updates so that the
// sizing/moving feedback can be continuous.
UnlockUpdates();
}
}
Window::OnSysCommand(notification_code, click);
}
///////////////////////////////////////////////////////////////////////////////
// CustomFrameWindow, private:
// static
void CustomFrameWindow::InitClass() {
static bool initialized = false;
if (!initialized) {
resize_cursors_[RC_NORMAL] = LoadCursor(NULL, IDC_ARROW);
resize_cursors_[RC_VERTICAL] = LoadCursor(NULL, IDC_SIZENS);
resize_cursors_[RC_HORIZONTAL] = LoadCursor(NULL, IDC_SIZEWE);
resize_cursors_[RC_NESW] = LoadCursor(NULL, IDC_SIZENESW);
resize_cursors_[RC_NWSE] = LoadCursor(NULL, IDC_SIZENWSE);
initialized = true;
}
}
void CustomFrameWindow::LockUpdates() {
lock_updates_ = true;
saved_window_style_ = GetWindowLong(GetHWND(), GWL_STYLE);
SetWindowLong(GetHWND(), GWL_STYLE, saved_window_style_ & ~WS_VISIBLE);
}
void CustomFrameWindow::UnlockUpdates() {
SetWindowLong(GetHWND(), GWL_STYLE, saved_window_style_);
lock_updates_ = false;
}
void CustomFrameWindow::ResetWindowRegion() {
// Changing the window region is going to force a paint. Only change the
// window region if the region really differs.
HRGN current_rgn = CreateRectRgn(0, 0, 0, 0);
int current_rgn_result = GetWindowRgn(GetHWND(), current_rgn);
CRect window_rect;
GetWindowRect(&window_rect);
HRGN new_region;
if (IsMaximized()) {
HMONITOR monitor = MonitorFromWindow(GetHWND(), MONITOR_DEFAULTTONEAREST);
MONITORINFO mi;
mi.cbSize = sizeof mi;
GetMonitorInfo(monitor, &mi);
CRect work_rect = mi.rcWork;
work_rect.OffsetRect(-window_rect.left, -window_rect.top);
new_region = CreateRectRgnIndirect(&work_rect);
} else {
gfx::Path window_mask;
non_client_view_->GetWindowMask(gfx::Size(window_rect.Width(),
window_rect.Height()),
&window_mask);
new_region = window_mask.CreateHRGN();
}
if (current_rgn_result == ERROR || !EqualRgn(current_rgn, new_region)) {
// SetWindowRgn takes ownership of the HRGN created by CreateHRGN.
SetWindowRgn(new_region, TRUE);
} else {
DeleteObject(new_region);
}
DeleteObject(current_rgn);
}
void CustomFrameWindow::ProcessNCMousePress(const CPoint& point, int flags) {
CPoint temp = point;
MapWindowPoints(HWND_DESKTOP, GetHWND(), &temp, 1);
UINT message_flags = 0;
if ((GetKeyState(VK_CONTROL) & 0x80) == 0x80)
message_flags |= MK_CONTROL;
if ((GetKeyState(VK_SHIFT) & 0x80) == 0x80)
message_flags |= MK_SHIFT;
message_flags |= flags;
ProcessMousePressed(temp, message_flags, false);
}
} // namespace views