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![Andrés G. Aragoneses](/assets/img/avatar_default.png)
Apply same finalizer leak fix to the rest of IDisposable-ownership cairo classes as the one recently committed for Cairo.Context[1]. [1] https://github.com/mono/gtk-sharp/commit/41eeecbf9a6d8
260 lines
6.3 KiB
C#
260 lines
6.3 KiB
C#
//
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// Mono.Cairo.Surface.cs
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//
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// Authors:
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// Duncan Mak
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// Miguel de Icaza.
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// Alp Toker
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//
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// (C) Ximian Inc, 2003.
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// (C) Novell, Inc. 2003.
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//
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// This is an OO wrapper API for the Cairo API
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//
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// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections;
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namespace Cairo {
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public class Surface : IDisposable
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{
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[Obsolete]
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protected static Hashtable surfaces = new Hashtable ();
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IntPtr handle = IntPtr.Zero;
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[Obsolete]
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protected Surface()
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{
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}
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[Obsolete]
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protected Surface (IntPtr handle) : this (handle, true)
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{
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}
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protected Surface (IntPtr handle, bool owner)
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{
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if (handle == IntPtr.Zero)
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throw new ArgumentException ("handle should not be NULL", "handle");
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this.handle = handle;
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if (!owner)
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NativeMethods.cairo_surface_reference (handle);
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if (CairoDebug.Enabled)
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CairoDebug.OnAllocated (handle);
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}
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public static Surface Lookup (IntPtr surface, bool owned)
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{
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SurfaceType st = NativeMethods.cairo_surface_get_type (surface);
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switch (st) {
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case SurfaceType.Image:
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return new ImageSurface (surface, owned);
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case SurfaceType.Xlib:
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return new XlibSurface (surface, owned);
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case SurfaceType.Xcb:
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return new XcbSurface (surface, owned);
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case SurfaceType.Glitz:
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return new GlitzSurface (surface, owned);
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case SurfaceType.Win32:
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return new Win32Surface (surface, owned);
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case SurfaceType.Pdf:
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return new PdfSurface (surface, owned);
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case SurfaceType.PS:
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return new PSSurface (surface, owned);
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case SurfaceType.DirectFB:
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return new DirectFBSurface (surface, owned);
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case SurfaceType.Svg:
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return new SvgSurface (surface, owned);
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default:
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return new Surface (surface, owned);
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}
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}
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[Obsolete ("Use an ImageSurface constructor instead.")]
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public static Cairo.Surface CreateForImage (
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ref byte[] data, Cairo.Format format, int width, int height, int stride)
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{
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IntPtr p = NativeMethods.cairo_image_surface_create_for_data (
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data, format, width, height, stride);
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return new Cairo.Surface (p, true);
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}
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[Obsolete ("Use an ImageSurface constructor instead.")]
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public static Cairo.Surface CreateForImage (
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Cairo.Format format, int width, int height)
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{
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IntPtr p = NativeMethods.cairo_image_surface_create (
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format, width, height);
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return new Cairo.Surface (p, true);
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}
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public Cairo.Surface CreateSimilar (
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Cairo.Content content, int width, int height)
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{
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IntPtr p = NativeMethods.cairo_surface_create_similar (
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this.Handle, content, width, height);
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return new Cairo.Surface (p, true);
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}
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~Surface ()
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{
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Dispose (false);
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}
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//[Obsolete ("Use Context.SetSource() followed by Context.Paint()")]
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public void Show (Context gr, double x, double y)
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{
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NativeMethods.cairo_set_source_surface (gr.Handle, handle, x, y);
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NativeMethods.cairo_paint (gr.Handle);
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}
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public void Dispose ()
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{
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Dispose (true);
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GC.SuppressFinalize (this);
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}
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protected virtual void Dispose (bool disposing)
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{
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if (!disposing || CairoDebug.Enabled)
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CairoDebug.OnDisposed<Surface> (handle, disposing);
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if (handle == IntPtr.Zero)
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return;
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NativeMethods.cairo_surface_destroy (handle);
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handle = IntPtr.Zero;
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}
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protected void CheckDisposed ()
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{
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if (handle == IntPtr.Zero)
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throw new ObjectDisposedException ("Object has already been disposed");
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}
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public Status Finish ()
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{
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CheckDisposed ();
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NativeMethods.cairo_surface_finish (handle);
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return Status;
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}
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public void Flush ()
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{
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CheckDisposed ();
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NativeMethods.cairo_surface_flush (handle);
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}
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public void MarkDirty ()
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{
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CheckDisposed ();
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NativeMethods.cairo_surface_mark_dirty (Handle);
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}
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public void MarkDirty (Rectangle rectangle)
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{
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CheckDisposed ();
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NativeMethods.cairo_surface_mark_dirty_rectangle (Handle, (int)rectangle.X, (int)rectangle.Y, (int)rectangle.Width, (int)rectangle.Height);
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}
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public IntPtr Handle {
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get {
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return handle;
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}
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}
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public PointD DeviceOffset {
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get {
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CheckDisposed ();
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double x, y;
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NativeMethods.cairo_surface_get_device_offset (handle, out x, out y);
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return new PointD (x, y);
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}
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set {
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CheckDisposed ();
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NativeMethods.cairo_surface_set_device_offset (handle, value.X, value.Y);
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}
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}
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[Obsolete ("Use Dispose()")]
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public void Destroy()
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{
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Dispose ();
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}
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public void SetFallbackResolution (double x, double y)
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{
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CheckDisposed ();
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NativeMethods.cairo_surface_set_fallback_resolution (handle, x, y);
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}
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public void WriteToPng (string filename)
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{
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CheckDisposed ();
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NativeMethods.cairo_surface_write_to_png (handle, filename);
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}
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[Obsolete ("Use Handle instead.")]
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public IntPtr Pointer {
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get {
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return handle;
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}
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}
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public Status Status {
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get {
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CheckDisposed ();
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return NativeMethods.cairo_surface_status (handle);
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}
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}
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public Content Content {
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get {
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CheckDisposed ();
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return NativeMethods.cairo_surface_get_content (handle);
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}
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}
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public SurfaceType SurfaceType {
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get {
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CheckDisposed ();
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return NativeMethods.cairo_surface_get_type (handle);
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}
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}
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public uint ReferenceCount {
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get {
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return NativeMethods.cairo_surface_get_reference_count (handle); }
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}
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}
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}
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