// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2005-2006 Novell, Inc. (http://www.novell.com)
//
// Authors:
// Peter Bartok (pbartok@novell.com)
//
//
// NOT COMPLETE
using System;
using System.Collections;
using System.Drawing;
using System.Runtime.InteropServices;
// NOTE: Possible optimization:
// Several properties calculate dimensions on the fly; instead; they can
// be stored in a field and only be recalculated when a style is changed (DefaultClientRect, for example)
namespace System.Windows.Forms{
internal class Hwnd : IDisposable {
#region Local Variables
private static Hashtable windows = new Hashtable(100, 0.5f);
//private const int menu_height = 14; // FIXME - Read this value from somewhere
private IntPtr handle;
internal IntPtr client_window;
internal IntPtr whole_window;
internal IntPtr cursor;
internal Menu menu;
internal TitleStyle title_style;
internal FormBorderStyle border_style;
internal bool border_static;
internal int x;
internal int y;
internal int width;
internal int height;
internal bool allow_drop;
internal Hwnd parent;
internal bool visible;
internal bool mapped;
internal uint opacity;
internal bool enabled;
internal bool zero_sized;
internal ArrayList invalid_list;
internal Rectangle nc_invalid;
internal bool expose_pending;
internal bool nc_expose_pending;
internal bool configure_pending;
internal bool resizing_or_moving; // Used by the X11 backend to track form resize/move
internal bool reparented;
internal Stack drawing_stack;
internal object user_data;
internal Rectangle client_rectangle;
internal ArrayList marshal_free_list;
internal int caption_height;
internal int tool_caption_height;
internal bool whacky_wm;
internal bool fixed_size;
internal bool zombie; /* X11 only flag. true if the X windows have been destroyed but we haven't been Disposed */
internal Region user_clip;
internal XEventQueue queue;
internal WindowExStyles initial_ex_style;
internal WindowStyles initial_style;
internal FormWindowState cached_window_state = (FormWindowState)(-1); /* X11 only field */
internal Point previous_child_startup_location = new Point (int.MinValue, int.MinValue);
static internal Point previous_main_startup_location = new Point (int.MinValue, int.MinValue);
internal ArrayList children;
[ThreadStatic]
private static Bitmap bmp;
[ThreadStatic]
private static Graphics bmp_g;
#endregion // Local Variables
// locks for some operations (used in XplatUIX11.cs)
internal object configure_lock = new object ();
internal object expose_lock = new object ();
#region Constructors and destructors
public Hwnd() {
x = 0;
y = 0;
width = 0;
height = 0;
visible = false;
menu = null;
border_style = FormBorderStyle.None;
client_window = IntPtr.Zero;
whole_window = IntPtr.Zero;
cursor = IntPtr.Zero;
handle = IntPtr.Zero;
parent = null;
invalid_list = new ArrayList();
expose_pending = false;
nc_expose_pending = false;
enabled = true;
reparented = false;
client_rectangle = Rectangle.Empty;
marshal_free_list = new ArrayList(2);
opacity = 0xffffffff;
fixed_size = false;
drawing_stack = new Stack ();
children = new ArrayList ();
resizing_or_moving = false;
whacky_wm = false;
}
public void Dispose() {
expose_pending = false;
nc_expose_pending = false;
Parent = null;
lock (windows) {
windows.Remove(client_window);
windows.Remove(whole_window);
}
client_window = IntPtr.Zero;
whole_window = IntPtr.Zero;
zombie = false;
for (int i = 0; i < marshal_free_list.Count; i++) {
Marshal.FreeHGlobal((IntPtr)marshal_free_list[i]);
}
marshal_free_list.Clear();
}
#endregion
#region Static Methods
public static Hwnd ObjectFromWindow(IntPtr window) {
Hwnd rv;
lock (windows) {
rv = (Hwnd)windows[window];
}
return rv;
}
public static Hwnd ObjectFromHandle(IntPtr handle) {
//return (Hwnd)(((GCHandle)handle).Target);
Hwnd rv;
lock (windows) {
rv = (Hwnd)windows[handle];
}
return rv;
}
public static IntPtr HandleFromObject(Hwnd obj) {
return obj.handle;
}
public static Hwnd GetObjectFromWindow(IntPtr window) {
Hwnd rv;
lock (windows) {
rv = (Hwnd)windows[window];
}
return rv;
}
public static IntPtr GetHandleFromWindow(IntPtr window) {
Hwnd hwnd;
lock (windows) {
hwnd = (Hwnd)windows[window];
}
if (hwnd != null) {
return hwnd.handle;
} else {
return IntPtr.Zero;
}
}
public static Borders GetBorderWidth (CreateParams cp)
{
Borders border_size = new Borders ();
Size windowborder = ThemeEngine.Current.BorderSize; /*new Size (1, 1);*/ // This is the only one that can be changed from the display properties in windows.
Size border = ThemeEngine.Current.BorderStaticSize; /*new Size (1, 1);*/
Size clientedge = ThemeEngine.Current.Border3DSize; /*new Size (2, 2);*/
Size thickframe = new Size (2 + windowborder.Width, 2 + windowborder.Height);
Size dialogframe = ThemeEngine.Current.BorderSizableSize; /* new Size (3, 3);*/
if (cp.IsSet (WindowStyles.WS_CAPTION)) {
border_size.Inflate (dialogframe);
} else if (cp.IsSet (WindowStyles.WS_BORDER)) {
if (cp.IsSet (WindowExStyles.WS_EX_DLGMODALFRAME)) {
if (cp.IsSet (WindowStyles.WS_THICKFRAME) && (cp.IsSet (WindowExStyles.WS_EX_STATICEDGE) || cp.IsSet (WindowExStyles.WS_EX_CLIENTEDGE))) {
border_size.Inflate (border);
}
} else {
border_size.Inflate (border);
}
} else if (cp.IsSet (WindowStyles.WS_DLGFRAME)) {
border_size.Inflate (dialogframe);
}
if (cp.IsSet (WindowStyles.WS_THICKFRAME)) {
if (cp.IsSet (WindowStyles.WS_DLGFRAME)) {
border_size.Inflate (border);
} else {
border_size.Inflate (thickframe);
}
}
bool only_small_border;
Size small_border = Size.Empty;
only_small_border = cp.IsSet (WindowStyles.WS_THICKFRAME) || cp.IsSet (WindowStyles.WS_DLGFRAME);
if (only_small_border && cp.IsSet (WindowStyles.WS_THICKFRAME) && !cp.IsSet (WindowStyles.WS_BORDER) && !cp.IsSet (WindowStyles.WS_DLGFRAME)) {
small_border = border;
}
if (cp.IsSet (WindowExStyles.WS_EX_CLIENTEDGE | WindowExStyles.WS_EX_DLGMODALFRAME)) {
border_size.Inflate (clientedge + (only_small_border ? small_border : dialogframe));
} else if (cp.IsSet (WindowExStyles.WS_EX_STATICEDGE | WindowExStyles.WS_EX_DLGMODALFRAME)) {
border_size.Inflate (only_small_border ? small_border : dialogframe);
} else if (cp.IsSet (WindowExStyles.WS_EX_STATICEDGE | WindowExStyles.WS_EX_CLIENTEDGE)) {
border_size.Inflate (border + (only_small_border ? Size.Empty : clientedge));
} else {
if (cp.IsSet (WindowExStyles.WS_EX_CLIENTEDGE)) {
border_size.Inflate (clientedge);
}
if (cp.IsSet (WindowExStyles.WS_EX_DLGMODALFRAME) && !cp.IsSet (WindowStyles.WS_DLGFRAME)) {
border_size.Inflate (cp.IsSet (WindowStyles.WS_THICKFRAME) ? border : dialogframe);
}
if (cp.IsSet (WindowExStyles.WS_EX_STATICEDGE)) {
if (cp.IsSet (WindowStyles.WS_THICKFRAME) || cp.IsSet (WindowStyles.WS_DLGFRAME)) {
border_size.Inflate (new Size (-border.Width, -border.Height));
} else {
border_size.Inflate (border);
}
}
}
return border_size;
}
public static Rectangle GetWindowRectangle (CreateParams cp, Menu menu)
{
return GetWindowRectangle (cp, menu, Rectangle.Empty);
}
public static Rectangle GetWindowRectangle (CreateParams cp, Menu menu, Rectangle client_rect)
{
Rectangle rect;
Borders borders;
borders = GetBorders (cp, menu);
rect = new Rectangle (Point.Empty, client_rect.Size);
rect.Y -= borders.top;
rect.Height += borders.top + borders.bottom;
rect.X -= borders.left;
rect.Width += borders.left + borders.right;
#if debug
Console.WriteLine ("GetWindowRectangle ({0}, {1}, {2}): {3}", cp, menu != null, client_rect, rect);
#endif
return rect;
}
public Rectangle GetClientRectangle (int width, int height)
{
CreateParams cp = new CreateParams ();
cp.WindowStyle = initial_style;
cp.WindowExStyle = initial_ex_style;
return GetClientRectangle (cp, menu, width, height);
}
// This could be greatly optimized by caching the outputs and only updating when something is moved
// in the parent planar space. To do that we need to track z-order in the parent space as well
public ArrayList GetClippingRectangles ()
{
ArrayList masks = new ArrayList ();
if (x < 0) {
masks.Add (new Rectangle (0, 0, x*-1, Height));
if (y < 0) {
masks.Add (new Rectangle (x*-1, 0, Width, y*-1));
}
} else if (y < 0) {
masks.Add (new Rectangle (0, 0, Width, y*-1));
}
foreach (Hwnd child in children) {
if (child.visible)
masks.Add (new Rectangle (child.X, child.Y, child.Width, child.Height));
}
if (parent == null) {
return masks;
}
ArrayList siblings = parent.children;
foreach (Hwnd sibling in siblings) {
IntPtr sibling_handle = whole_window;
if (sibling == this)
continue;
// This entire method should be cached to find all higher views at the time of query
do {
sibling_handle = XplatUI.GetPreviousWindow (sibling_handle);
if (sibling_handle == sibling.WholeWindow && sibling.visible) {
Rectangle intersect = Rectangle.Intersect (new Rectangle (X, Y, Width, Height), new Rectangle (sibling.X, sibling.Y, sibling.Width, sibling.Height));
if (intersect == Rectangle.Empty)
continue;
intersect.X -= X;
intersect.Y -= Y;
masks.Add (intersect);
}
} while (sibling_handle != IntPtr.Zero);
}
return masks;
}
public static Borders GetBorders (CreateParams cp, Menu menu)
{
Borders borders = new Borders ();
if (menu != null) {
int menu_height = menu.Rect.Height;
if (menu_height == 0)
menu_height = ThemeEngine.Current.CalcMenuBarSize (GraphicsContext, menu, cp.Width);
borders.top += menu_height;
}
if (cp.IsSet (WindowStyles.WS_CAPTION)) {
int caption_height;
if (cp.IsSet (WindowExStyles.WS_EX_TOOLWINDOW)) {
caption_height = ThemeEngine.Current.ToolWindowCaptionHeight;
} else {
caption_height = ThemeEngine.Current.CaptionHeight;
}
borders.top += caption_height;
}
Borders border_width = GetBorderWidth (cp);
borders.left += border_width.left;
borders.right += border_width.right;
borders.top += border_width.top;
borders.bottom += border_width.bottom;
return borders;
}
public static Rectangle GetClientRectangle(CreateParams cp, Menu menu, int width, int height) {
Rectangle rect;
Borders borders;
borders = GetBorders (cp, menu);
rect = new Rectangle(0, 0, width, height);
rect.Y += borders.top;
rect.Height -= borders.top + borders.bottom;
rect.X += borders.left;
rect.Width -= borders.left + borders.right;
#if debug
Console.WriteLine ("GetClientRectangle ({0}, {1}, {2}, {3}): {4}", cp, menu != null, width, height, rect);
#endif
return rect;
}
public static Graphics GraphicsContext {
get {
if (bmp_g == null) {
bmp = new Bitmap (1, 1, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
bmp_g = Graphics.FromImage (bmp);
}
return bmp_g;
}
}
#endregion // Static Methods
#region Instance Properties
public FormBorderStyle BorderStyle {
get {
return border_style;
}
set {
border_style = value;
}
}
public Rectangle ClientRect {
get {
if (client_rectangle == Rectangle.Empty) {
return DefaultClientRect;
}
return client_rectangle;
}
set {
client_rectangle = value;
}
}
public IntPtr Cursor {
get {
return cursor;
}
set {
cursor = value;
}
}
public IntPtr ClientWindow {
get {
return client_window;
}
set {
client_window = value;
handle = value;
zombie = false;
if (client_window != IntPtr.Zero) {
lock (windows) {
if (windows[client_window] == null) {
windows[client_window] = this;
}
}
}
}
}
public Region UserClip {
get {
return user_clip;
}
set {
user_clip = value;
}
}
public Rectangle DefaultClientRect {
get {
// We pass a Zero for the menu handle so the menu size is
// not computed this is done via an WM_NCCALC
CreateParams cp = new CreateParams ();
Rectangle rect;
cp.WindowStyle = initial_style;
cp.WindowExStyle = initial_ex_style;
rect = GetClientRectangle (cp, null, width, height);
return rect;
}
}
public bool ExposePending {
get {
return expose_pending;
}
}
public IntPtr Handle {
get {
if (handle == IntPtr.Zero) {
throw new ArgumentNullException("Handle", "Handle is not yet assigned, need a ClientWindow");
}
return handle;
}
}
public int Height {
get {
return height;
}
set {
height = value;
}
}
public Menu Menu {
get {
return menu;
}
set {
menu = value;
}
}
public bool Reparented {
get {
return reparented;
}
set {
reparented = value;
}
}
public uint Opacity {
get {
return opacity;
}
set {
opacity = value;
}
}
public XEventQueue Queue {
get {
return queue;
}
set {
queue = value;
}
}
public bool Enabled {
get {
if (!enabled) {
return false;
}
if (parent != null) {
return parent.Enabled;
}
return true;
}
set {
enabled = value;
}
}
public IntPtr EnabledHwnd {
get {
if (Enabled || parent == null) {
return Handle;
}
return parent.EnabledHwnd;
}
}
public Point MenuOrigin {
get {
Form frm = Control.FromHandle (handle) as Form;
if (frm != null && frm.window_manager != null)
return frm.window_manager.GetMenuOrigin ();
Point pt;
Size border_3D_size = ThemeEngine.Current.Border3DSize;
pt = new Point(0, 0);
if (border_style == FormBorderStyle.Fixed3D) {
pt.X += border_3D_size.Width;
pt.Y += border_3D_size.Height;
} else if (border_style == FormBorderStyle.FixedSingle) {
pt.X += 1;
pt.Y += 1;
}
if (this.title_style == TitleStyle.Normal) {
pt.Y += caption_height;
} else if (this.title_style == TitleStyle.Normal) {
pt.Y += tool_caption_height;
}
return pt;
}
}
public Rectangle Invalid {
get {
if (invalid_list.Count == 0)
return Rectangle.Empty;
Rectangle result = (Rectangle)invalid_list[0];
for (int i = 1; i < invalid_list.Count; i ++) {
result = Rectangle.Union (result, (Rectangle)invalid_list[i]);
}
return result;
}
}
public Rectangle[] ClipRectangles {
get {
return (Rectangle[]) invalid_list.ToArray (typeof (Rectangle));
}
}
public Rectangle NCInvalid {
get { return nc_invalid; }
set { nc_invalid = value; }
}
public bool NCExposePending {
get {
return nc_expose_pending;
}
}
public Hwnd Parent {
get {
return parent;
}
set {
if (parent != null)
parent.children.Remove (this);
parent = value;
if (parent != null)
parent.children.Add (this);
}
}
public bool Mapped {
get {
if (!mapped) {
return false;
}
if (parent != null) {
return parent.Mapped;
}
return true;
}
set {
mapped = value;
}
}
public int CaptionHeight {
get { return caption_height; }
set { caption_height = value; }
}
public int ToolCaptionHeight {
get { return tool_caption_height; }
set { tool_caption_height = value; }
}
public TitleStyle TitleStyle {
get {
return title_style;
}
set {
title_style = value;
}
}
public object UserData {
get {
return user_data;
}
set {
user_data = value;
}
}
public IntPtr WholeWindow {
get {
return whole_window;
}
set {
whole_window = value;
zombie = false;
if (whole_window != IntPtr.Zero) {
lock (windows) {
if (windows[whole_window] == null) {
windows[whole_window] = this;
}
}
}
}
}
public int Width {
get {
return width;
}
set {
width = value;
}
}
public bool Visible {
get {
return visible;
}
set {
visible = value;
}
}
public int X {
get {
return x;
}
set {
x = value;
}
}
public int Y {
get {
return y;
}
set {
y = value;
}
}
#endregion // Instance properties
#region Methods
public void AddInvalidArea(int x, int y, int width, int height) {
AddInvalidArea(new Rectangle(x, y, width, height));
}
public void AddInvalidArea(Rectangle rect) {
ArrayList tmp = new ArrayList ();
foreach (Rectangle r in invalid_list) {
if (!rect.Contains (r)) {
tmp.Add (r);
}
}
tmp.Add (rect);
invalid_list = tmp;
}
public void ClearInvalidArea() {
invalid_list.Clear();
expose_pending = false;
}
public void AddNcInvalidArea(int x, int y, int width, int height) {
if (nc_invalid == Rectangle.Empty) {
nc_invalid = new Rectangle (x, y, width, height);
return;
}
int right, bottom;
right = Math.Max (nc_invalid.Right, x + width);
bottom = Math.Max (nc_invalid.Bottom, y + height);
nc_invalid.X = Math.Min (nc_invalid.X, x);
nc_invalid.Y = Math.Min (nc_invalid.Y, y);
nc_invalid.Width = right - nc_invalid.X;
nc_invalid.Height = bottom - nc_invalid.Y;
}
public void AddNcInvalidArea(Rectangle rect) {
if (nc_invalid == Rectangle.Empty) {
nc_invalid = rect;
return;
}
nc_invalid = Rectangle.Union (nc_invalid, rect);
}
public void ClearNcInvalidArea() {
nc_invalid = Rectangle.Empty;
nc_expose_pending = false;
}
public override string ToString() {
return String.Format("Hwnd, Mapped:{3} ClientWindow:0x{0:X}, WholeWindow:0x{1:X}, Zombie={4}, Parent:[{2:X}]", client_window.ToInt32(), whole_window.ToInt32(), parent != null ? parent.ToString() : "<null>", Mapped, zombie);
}
public static Point GetNextStackedFormLocation (CreateParams cp, Hwnd parent_hwnd)
{
if (cp.control == null)
return Point.Empty;
int X = cp.X;
int Y = cp.Y;
Point previous, next;
Rectangle within;
if (parent_hwnd != null) {
Control parent = cp.control.Parent;
previous = parent_hwnd.previous_child_startup_location;
if (parent_hwnd.client_rectangle == Rectangle.Empty && parent != null) {
within = parent.ClientRectangle;
} else {
within = parent_hwnd.client_rectangle;
}
} else {
previous = Hwnd.previous_main_startup_location;
within = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea;
}
if (previous.X == int.MinValue || previous.Y == int.MinValue) {
next = Point.Empty;
} else {
next = new Point (previous.X + 22, previous.Y + 22);
}
if (!within.Contains (next.X * 3, next.Y * 3)) {
next = Point.Empty;
}
if (next == Point.Empty && cp.Parent == IntPtr.Zero) {
next = new Point (22, 22);
}
if (parent_hwnd != null) {
parent_hwnd.previous_child_startup_location = next;
} else {
Hwnd.previous_main_startup_location = next;
}
if (X == int.MinValue && Y == int.MinValue) {
X = next.X;
Y = next.Y;
}
return new Point (X, Y);
}
#endregion // Methods
internal struct Borders
{
public int top;
public int bottom;
public int left;
public int right;
public void Inflate (Size size)
{
left += size.Width;
right += size.Width;
top += size.Height;
bottom += size.Height;
}
public override string ToString ()
{
return string.Format("{{top={0}, bottom={1}, left={2}, right={3}}}", top, bottom, left, right);
}
public static bool operator == (Borders a, Borders b)
{
return (a.left == b.left && a.right == b.right && a.top == b.top && a.bottom == b.bottom);
}
public static bool operator != (Borders a, Borders b)
{
return !(a == b);
}
public override bool Equals (object obj)
{
return base.Equals (obj);
}
public override int GetHashCode ()
{
return base.GetHashCode ();
}
}
}
}
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