121 lines
3.7 KiB
C#
121 lines
3.7 KiB
C#
//
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// GtkMacDesktopBackend.cs
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//
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// Author:
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// Lluis Sanchez Gual <lluis@xamarin.com>
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//
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// Copyright (c) 2014 Xamarin, Inc (http://www.xamarin.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// 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, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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using Xwt.GtkBackend;
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using AppKit;
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using System.Drawing;
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using System.IO;
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using GTK = global::Gtk;
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using CoreGraphics;
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namespace Xwt.Gtk.Mac
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{
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public class GtkMacDesktopBackend: GtkDesktopBackend
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{
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public static Gdk.Pixbuf GetPixbufFromNSImage (NSImage icon, int width, int height)
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{
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var rect = new CGRect (0, 0, width, height);
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var rep = icon.BestRepresentation (rect, null, null);
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var bitmap = rep as NSBitmapImageRep;
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try {
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if (bitmap == null) {
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if (rep != null)
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rep.Dispose ();
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using (var cgi = icon.AsCGImage (ref rect, null, null)) {
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if (cgi == null)
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return null;
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bitmap = new NSBitmapImageRep (cgi);
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}
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}
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return GetPixbufFromNSBitmapImageRep (bitmap, width, height);
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} finally {
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if (bitmap != null)
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bitmap.Dispose ();
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}
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}
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static Gdk.Pixbuf GetPixbufFromNSBitmapImageRep (NSBitmapImageRep bitmap, int width, int height)
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{
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byte[] data;
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using (var tiff = bitmap.TiffRepresentation) {
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data = new byte[tiff.Length];
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System.Runtime.InteropServices.Marshal.Copy (tiff.Bytes, data, 0, data.Length);
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}
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int pw = (int)bitmap.PixelsWide, ph = (int)bitmap.PixelsHigh;
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var pixbuf = new Gdk.Pixbuf (data, pw, ph);
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// if one dimension matches, and the other is same or smaller, use as-is
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if ((pw == width && ph <= height) || (ph == height && pw <= width))
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return pixbuf;
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// otherwise scale proportionally such that the largest dimension matches the desired size
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if (pw == ph) {
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pw = width;
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ph = height;
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} else if (pw > ph) {
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ph = (int) (width * ((float) ph / pw));
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pw = width;
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} else {
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pw = (int) (height * ((float) pw / ph));
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ph = height;
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}
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var scaled = pixbuf.ScaleSimple (pw, ph, Gdk.InterpType.Bilinear);
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pixbuf.Dispose ();
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return scaled;
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}
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public override object GetFileIcon (string filename)
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{
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NSImage icon = null;
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if (Path.IsPathRooted (filename) && File.Exists (filename)) {
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icon = NSWorkspace.SharedWorkspace.IconForFile (filename);
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} else {
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string extension = Path.GetExtension (filename);
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if (!string.IsNullOrEmpty (extension))
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icon = NSWorkspace.SharedWorkspace.IconForFileType (extension);
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}
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if (icon == null) {
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return base.GetFileIcon (filename);
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}
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int w, h;
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if (!GTK.Icon.SizeLookup (GTK.IconSize.Menu, out w, out h)) {
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w = h = 22;
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}
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var res = GetPixbufFromNSImage (icon, w, h);
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return res != null ? new GtkImage (res) : base.GetFileIcon (filename);
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}
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}
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}
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