//
// System.Drawing.carbonFunctions.cs
//
// Authors:
// Geoff Norton (gnorton@customerdna.com>
//
// Copyright (C) 2007 Novell, Inc. (http://www.novell.com)
//
// 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.
//
#undef DEBUG_CLIPPING
using System.Collections;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Security;
namespace System.Drawing{
[SuppressUnmanagedCodeSecurity]
#if NET_2_0
internal static class Carbon {
#else
internal sealed class Carbon {
#endif
internal static Hashtable contextReference = new Hashtable ();
internal static object lockobj = new object ();
internal static Delegate hwnd_delegate;
#if DEBUG_CLIPPING
internal static float red = 1.0f;
internal static float green = 0.0f;
internal static float blue = 0.0f;
internal static int debug_threshold = 1;
#endif
static Carbon () {
foreach (Assembly asm in AppDomain.CurrentDomain.GetAssemblies ()) {
if (String.Equals (asm.GetName ().Name, "System.Windows.Forms")) {
Type driver_type = asm.GetType ("System.Windows.Forms.XplatUICarbon");
if (driver_type != null) {
hwnd_delegate = (Delegate) driver_type.GetField ("HwndDelegate", BindingFlags.NonPublic | BindingFlags.Static).GetValue (null);
}
}
}
}
internal static CarbonContext GetCGContextForView (IntPtr handle) {
IntPtr context = IntPtr.Zero;
IntPtr port = IntPtr.Zero;
IntPtr window = IntPtr.Zero;
window = GetControlOwner (handle);
if (handle == IntPtr.Zero || window == IntPtr.Zero) {
// FIXME: Can we actually get a CGContextRef for the desktop? this makes context IntPtr.Zero
port = GetQDGlobalsThePort ();
CreateCGContextForPort (port, ref context);
Rect desktop_bounds = CGDisplayBounds (CGMainDisplayID ());
return new CarbonContext (port, context, (int)desktop_bounds.size.width, (int)desktop_bounds.size.height);
}
QDRect window_bounds = new QDRect ();
Rect view_bounds = new Rect ();
port = GetWindowPort (window);
context = GetContext (port);
GetWindowBounds (window, 32, ref window_bounds);
HIViewGetBounds (handle, ref view_bounds);
HIViewConvertRect (ref view_bounds, handle, IntPtr.Zero);
if (view_bounds.size.height < 0) view_bounds.size.height = 0;
if (view_bounds.size.width < 0) view_bounds.size.width = 0;
CGContextTranslateCTM (context, view_bounds.origin.x, (window_bounds.bottom - window_bounds.top) - (view_bounds.origin.y + view_bounds.size.height));
// Create the original rect path and clip to it
Rect rc_clip = new Rect (0, 0, view_bounds.size.width, view_bounds.size.height);
CGContextSaveGState (context);
Rectangle [] clip_rectangles = (Rectangle []) hwnd_delegate.DynamicInvoke (new object [] {handle});
if (clip_rectangles != null && clip_rectangles.Length > 0) {
int length = clip_rectangles.Length;
CGContextBeginPath (context);
CGContextAddRect (context, rc_clip);
for (int i = 0; i < length; i++) {
CGContextAddRect (context, new Rect (clip_rectangles [i].X, view_bounds.size.height - clip_rectangles [i].Y - clip_rectangles [i].Height, clip_rectangles [i].Width, clip_rectangles [i].Height));
}
CGContextClosePath (context);
CGContextEOClip (context);
#if DEBUG_CLIPPING
if (clip_rectangles.Length >= debug_threshold) {
CGContextSetRGBFillColor (context, red, green, blue, 0.5f);
CGContextFillRect (context, rc_clip);
CGContextFlush (context);
System.Threading.Thread.Sleep (500);
if (red == 1.0f) { red = 0.0f; blue = 1.0f; }
else if (blue == 1.0f) { blue = 0.0f; green = 1.0f; }
else if (green == 1.0f) { green = 0.0f; red = 1.0f; }
}
#endif
} else {
CGContextBeginPath (context);
CGContextAddRect (context, rc_clip);
CGContextClosePath (context);
CGContextClip (context);
}
return new CarbonContext (port, context, (int)view_bounds.size.width, (int)view_bounds.size.height);
}
internal static IntPtr GetContext (IntPtr port) {
IntPtr context = IntPtr.Zero;
lock (lockobj) {
#if FALSE
if (contextReference [port] != null) {
CreateCGContextForPort (port, ref context);
} else {
QDBeginCGContext (port, ref context);
contextReference [port] = context;
}
#else
CreateCGContextForPort (port, ref context);
#endif
}
return context;
}
internal static void ReleaseContext (IntPtr port, IntPtr context) {
CGContextRestoreGState (context);
lock (lockobj) {
#if FALSE
if (contextReference [port] != null && context == (IntPtr) contextReference [port]) {
QDEndCGContext (port, ref context);
contextReference [port] = null;
} else {
CFRelease (context);
}
#else
CFRelease (context);
#endif
}
}
#region Cocoa Methods
[DllImport("libobjc.dylib")]
public static extern IntPtr objc_getClass(string className);
[DllImport("libobjc.dylib")]
public static extern IntPtr objc_msgSend(IntPtr basePtr, IntPtr selector, string argument);
[DllImport("libobjc.dylib")]
public static extern IntPtr objc_msgSend(IntPtr basePtr, IntPtr selector);
[DllImport("libobjc.dylib")]
public static extern void objc_msgSend_stret(ref Rect arect, IntPtr basePtr, IntPtr selector);
[DllImport("libobjc.dylib")]
public static extern IntPtr sel_registerName(string selectorName);
#endregion
[DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern IntPtr CGMainDisplayID ();
[DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern Rect CGDisplayBounds (IntPtr display);
[DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern int HIViewGetBounds (IntPtr vHnd, ref Rect r);
[DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern int HIViewConvertRect (ref Rect r, IntPtr a, IntPtr b);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern IntPtr GetControlOwner (IntPtr aView);
[DllImport("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern int GetWindowBounds (IntPtr wHnd, uint reg, ref QDRect rect);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern IntPtr GetWindowPort (IntPtr hWnd);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern IntPtr GetQDGlobalsThePort ();
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CreateCGContextForPort (IntPtr port, ref IntPtr context);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CFRelease (IntPtr context);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void QDBeginCGContext (IntPtr port, ref IntPtr context);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void QDEndCGContext (IntPtr port, ref IntPtr context);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern int CGContextClipToRect (IntPtr context, Rect clip);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern int CGContextClipToRects (IntPtr context, Rect [] clip_rects, int count);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextTranslateCTM (IntPtr context, float tx, float ty);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextScaleCTM (IntPtr context, float x, float y);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextFlush (IntPtr context);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextSynchronize (IntPtr context);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern IntPtr CGPathCreateMutable ();
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGPathAddRects (IntPtr path, IntPtr _void, Rect [] rects, int count);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGPathAddRect (IntPtr path, IntPtr _void, Rect rect);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextAddRects (IntPtr context, Rect [] rects, int count);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextAddRect (IntPtr context, Rect rect);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextBeginPath (IntPtr context);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextClosePath (IntPtr context);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextAddPath (IntPtr context, IntPtr path);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextClip (IntPtr context);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextEOClip (IntPtr context);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextEOFillPath (IntPtr context);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextSaveGState (IntPtr context);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextRestoreGState (IntPtr context);
#if DEBUG_CLIPPING
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextSetRGBFillColor (IntPtr context, float red, float green, float blue, float alpha);
[DllImport ("/System/Library/Frameworks/Carbon.framework/Versions/Current/Carbon")]
internal static extern void CGContextFillRect (IntPtr context, Rect rect);
#endif
}
internal struct CGSize {
public float width;
public float height;
}
internal struct CGPoint {
public float x;
public float y;
}
internal struct Rect {
public Rect (float x, float y, float width, float height) {
this.origin.x = x;
this.origin.y = y;
this.size.width = width;
this.size.height = height;
}
public CGPoint origin;
public CGSize size;
}
internal struct QDRect
{
public short top;
public short left;
public short bottom;
public short right;
}
internal struct CarbonContext
{
public IntPtr port;
public IntPtr ctx;
public int width;
public int height;
public CarbonContext (IntPtr port, IntPtr ctx, int width, int height)
{
this.port = port;
this.ctx = ctx;
this.width = width;
this.height = height;
}
}
}
|