From 60560a030fda3c539ff9dc1563b9926414a193da Mon Sep 17 00:00:00 2001
From: Alessandro Ghedini <al3xbio@gmail.com>
Date: Sat, 21 Jan 2012 19:07:09 +0100
Subject: Imported Upstream version 0.4.0

---
 src/images/image.vala | 67 +++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 60 insertions(+), 7 deletions(-)

(limited to 'src/images/image.vala')

diff --git a/src/images/image.vala b/src/images/image.vala
index 836e4e2..1d9674b 100644
--- a/src/images/image.vala
+++ b/src/images/image.vala
@@ -65,14 +65,39 @@ public class Image : GLib.Object {
     /////////////////////////////////////////////////////////////////////
     
     public Image.from_pixbuf(Gdk.Pixbuf pixbuf) {
-        this.load_pixbuf(pixbuf);
+        if (pixbuf != null) this.load_pixbuf(pixbuf);
+        else                this.surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, 1, 1);
     }
     
-    public Image.capture_screen(int posx, int posy, int width, int height) {
+    /////////////////////////////////////////////////////////////////////
+    /// Captures a part of the screen.
+    /////////////////////////////////////////////////////////////////////
+    
+    public Image.capture_screen(int posx, int posy, int width, int height, bool hide_pies = true) {
         Gdk.Window root = Gdk.get_default_root_window();
-        Gdk.Pixbuf pixbuf = Gdk.pixbuf_get_from_drawable(null, root, null, posx, posy, 0, 0, width, height);
+        #if HAVE_GTK_3
+            Gdk.Pixbuf pixbuf = Gdk.pixbuf_get_from_window(root, posx, posy, width, height);
+        #else
+            Gdk.Pixbuf pixbuf = Gdk.pixbuf_get_from_drawable(null, root, null, posx, posy, 0, 0, width, height);
+        #endif
+
 
         this.load_pixbuf(pixbuf);
+        
+        if (hide_pies) {
+            // check for opened pies
+            foreach (var window in PieManager.opened_windows) {
+                if (window.background != null) {
+                    int x=0, y=0, dx=0, dy=0;
+                    window.get_position(out x, out y);
+                    window.get_size(out dx, out dy);
+
+                    var ctx = this.context();
+                    ctx.translate((int)(x-posx + (dx+3)/2), (int)(y-posy + (dy+3)/2));                    
+                    window.background.paint_on(ctx);
+                }
+            }
+        }
     }
     
     /////////////////////////////////////////////////////////////////////
@@ -87,6 +112,7 @@ public class Image : GLib.Object {
                 this.load_pixbuf(pixbuf);
             } else {
                 warning("Failed to load " + filename + "!");
+                this.surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, 1, 1);
             }
         } catch (GLib.Error e) {
             message("Error loading image file: %s", e.message);
@@ -106,6 +132,7 @@ public class Image : GLib.Object {
                 this.load_pixbuf(pixbuf);
             } else {
                 warning("Failed to load " + filename + "!");
+                this.surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, width, height);
             }
         } catch (GLib.Error e) {
             message("Error loading image file: %s", e.message);
@@ -130,17 +157,39 @@ public class Image : GLib.Object {
     /////////////////////////////////////////////////////////////////////
     
     public void paint_on(Cairo.Context ctx, double alpha = 1.0) {
-        ctx.set_source_surface(this.surface, -0.5*this.width()-1, -0.5*this.height()-1);
+        ctx.set_source_surface(this.surface, (int)(-0.5*this.width()-1), (int)(-0.5*this.height()-1));
         if (alpha >= 1.0) ctx.paint();
         else              ctx.paint_with_alpha(alpha);
     }
     
+    /////////////////////////////////////////////////////////////////////
+    /// Converts the image to a Gdk.Pixbuf.
+    /////////////////////////////////////////////////////////////////////
+    
+    public Gdk.Pixbuf to_pixbuf() {
+        var pixbuf = new Gdk.Pixbuf.from_data(surface.get_data(), Gdk.Colorspace.RGB, true, 8, 
+                                              width(), height(), surface.get_stride(), null);
+        
+        pixbuf = pixbuf.copy();
+                                       
+        // funny stuff here --- need to swap Red end Blue because Cairo 
+        // and Gdk are different...
+        uint8* p = pixbuf.pixels;
+        for (int i=0; i<width()*height()*4-4; i+=4) {
+            var tmp = *(p + i);
+            *(p + i) = *(p + i + 2);
+            *(p + i + 2) = tmp;
+        }
+		
+		return pixbuf;
+    }
+    
     /////////////////////////////////////////////////////////////////////
     /// Returns a Cairo.Context for the Image.
     /////////////////////////////////////////////////////////////////////
     
     public Cairo.Context context() {
-        return new Cairo.Context(this.surface);;
+        return new Cairo.Context(this.surface);
     }
     
     /////////////////////////////////////////////////////////////////////
@@ -148,7 +197,9 @@ public class Image : GLib.Object {
     /////////////////////////////////////////////////////////////////////
     
     public int width() {
-        return this.surface.get_width();
+        if (this.surface != null)
+            return this.surface.get_width();
+        return 0;
     }
     
     /////////////////////////////////////////////////////////////////////
@@ -156,7 +207,9 @@ public class Image : GLib.Object {
     /////////////////////////////////////////////////////////////////////
     
     public int height() {
-        return this.surface.get_height();
+        if (this.surface != null)
+            return this.surface.get_height();
+        return 0;
     }
 }
 
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