Imported Upstream version 0.3.1upstream/0.3.1

4 files changed, 536 insertions, 0 deletions

diff --git a/src/images/icon.vala b/src/images/icon.vala
new file mode 100644
index 0000000..1c8a9f4
--- /dev/null
+++ b/src/images/icon.vala
@@ -0,0 +1,102 @@
+/* 
+Copyright (c) 2011 by Simon Schneegans
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the Free
+Software Foundation, either version 3 of the License, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>. 
+*/
+
+namespace GnomePie {
+
+/////////////////////////////////////////////////////////////////////////    
+///  A class representing a square-shaped icon, loaded from the users
+/// icon theme.
+/////////////////////////////////////////////////////////////////////////
+
+public class Icon : Image {
+
+    /////////////////////////////////////////////////////////////////////
+    /// A cache which stores loaded icon. It is cleared when the icon
+    /// theme of the user changes. The key is in form <filename>@<size>.
+    /////////////////////////////////////////////////////////////////////
+
+    private static Gee.HashMap<string, Cairo.ImageSurface?> cache { private get; private set; }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Initializes the cache.
+    /////////////////////////////////////////////////////////////////////
+    
+    public static void init() {
+        clear_cache();
+        
+        Gtk.IconTheme.get_default().changed.connect(() => {
+            clear_cache();
+        });
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Clears the cache.
+    /////////////////////////////////////////////////////////////////////
+    
+    public static void clear_cache() {
+        cache = new Gee.HashMap<string, Cairo.ImageSurface?>();
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Loads an icon from the current icon theme of the user.
+    /////////////////////////////////////////////////////////////////////
+    
+    public Icon(string icon_name, int size) {
+        var cached = this.cache.get("%s@%u".printf(icon_name, size));
+        
+        if (cached == null) {
+            this.load_file_at_size(this.get_icon_file(icon_name, size), size, size);
+            this.cache.set("%s@%u".printf(icon_name, size), this.surface);
+        } else {
+            this.surface = cached;
+        }
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Returns the size of the icon in pixels. Greetings to Liskov.
+    /////////////////////////////////////////////////////////////////////
+    
+    public int size() {
+        return base.width();
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Returns the filename for a given system icon.
+    /////////////////////////////////////////////////////////////////////
+    
+    public static string get_icon_file(string icon_name, int size) {
+        string result = "";
+    
+        var icon_theme = Gtk.IconTheme.get_default();
+        var file = icon_theme.lookup_icon(icon_name, size, 0);
+        if (file != null) result = file.get_filename();
+        
+        if (result == "") {
+            warning("Icon \"" + icon_name + "\" not found! Using default icon...");
+            icon_name = "application-default-icon";
+            file = icon_theme.lookup_icon(icon_name, size, 0);
+            if (file != null) result = file.get_filename();
+        }
+        
+        if (result == "")
+            warning("Icon \"" + icon_name + "\" not found! Will be ugly...");
+            
+        return result;
+    }
+}
+
+}
diff --git a/src/images/image.vala b/src/images/image.vala
new file mode 100644
index 0000000..836e4e2
--- /dev/null
+++ b/src/images/image.vala
@@ -0,0 +1,163 @@
+/* 
+Copyright (c) 2011 by Simon Schneegans
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the Free
+Software Foundation, either version 3 of the License, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>. 
+*/
+
+namespace GnomePie {
+
+/////////////////////////////////////////////////////////////////////////    
+/// A class which loads image files. It can load image files in various
+/// formats, including jpeg, png and svg. 
+/////////////////////////////////////////////////////////////////////////
+
+public class Image : GLib.Object {
+    
+    /////////////////////////////////////////////////////////////////////
+    /// The internally used surface.
+    /////////////////////////////////////////////////////////////////////
+    
+    public Cairo.ImageSurface surface { public get; protected set; default=null; }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Creates an empty Image.
+    /////////////////////////////////////////////////////////////////////
+    
+    public Image.empty(int width, int height, Color? color = null) {
+        this.surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, width, height);
+        
+        if (color != null) {
+            var ctx = this.context();
+            ctx.set_source_rgb(color.r, color.g, color.b);
+            ctx.paint();
+        }
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Creates an image from the the given filename.
+    /////////////////////////////////////////////////////////////////////
+    
+    public Image.from_file(string filename) {
+        this.load_file(filename);
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Creates an image from the the given filename at a given size.
+    /////////////////////////////////////////////////////////////////////
+    
+    public Image.from_file_at_size(string filename, int width, int height) {
+        this.load_file_at_size(filename, width, height);
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Creates an image from the the given Gdk.Pixbuf.
+    /////////////////////////////////////////////////////////////////////
+    
+    public Image.from_pixbuf(Gdk.Pixbuf pixbuf) {
+        this.load_pixbuf(pixbuf);
+    }
+    
+    public Image.capture_screen(int posx, int posy, int width, int height) {
+        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);
+
+        this.load_pixbuf(pixbuf);
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Loads an image from the the given filename.
+    /////////////////////////////////////////////////////////////////////
+    
+    public void load_file(string filename) {
+        try {
+            var pixbuf = new Gdk.Pixbuf.from_file(filename);
+            
+            if (pixbuf != null) {
+                this.load_pixbuf(pixbuf);
+            } else {
+                warning("Failed to load " + filename + "!");
+            }
+        } catch (GLib.Error e) {
+            message("Error loading image file: %s", e.message);
+            this.surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, 1, 1);
+        }
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Loads an image from the the given filename at a given size.
+    /////////////////////////////////////////////////////////////////////
+    
+    public void load_file_at_size(string filename, int width, int height) {
+        try {
+            var pixbuf = new Gdk.Pixbuf.from_file_at_size(filename, width, height);
+            
+            if (pixbuf != null) {
+                this.load_pixbuf(pixbuf);
+            } else {
+                warning("Failed to load " + filename + "!");
+            }
+        } catch (GLib.Error e) {
+            message("Error loading image file: %s", e.message);
+            this.surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, width, height);
+        }
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Loads an image from the the given Gdk.Pixbuf.
+    /////////////////////////////////////////////////////////////////////
+    
+    public void load_pixbuf(Gdk.Pixbuf pixbuf) {
+        this.surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, pixbuf.width, pixbuf.height);
+    
+        var ctx = this.context();
+        Gdk.cairo_set_source_pixbuf(ctx, pixbuf, 1.0, 1.0);
+        ctx.paint();
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Paints the image onto the given Cairo.Context
+    /////////////////////////////////////////////////////////////////////
+    
+    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);
+        if (alpha >= 1.0) ctx.paint();
+        else              ctx.paint_with_alpha(alpha);
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Returns a Cairo.Context for the Image.
+    /////////////////////////////////////////////////////////////////////
+    
+    public Cairo.Context context() {
+        return new Cairo.Context(this.surface);;
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Returns the width of the image in pixels.
+    /////////////////////////////////////////////////////////////////////
+    
+    public int width() {
+        return this.surface.get_width();
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Returns the height of the image in pixels.
+    /////////////////////////////////////////////////////////////////////
+    
+    public int height() {
+        return this.surface.get_height();
+    }
+}
+
+}
diff --git a/src/images/renderedText.vala b/src/images/renderedText.vala
new file mode 100644
index 0000000..924742a
--- /dev/null
+++ b/src/images/renderedText.vala
@@ -0,0 +1,110 @@
+/* 
+Copyright (c) 2011 by Simon Schneegans
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the Free
+Software Foundation, either version 3 of the License, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>. 
+*/
+
+namespace GnomePie {
+
+/////////////////////////////////////////////////////////////////////////    
+///  A class representing string, rendered on an Image.
+/////////////////////////////////////////////////////////////////////////
+
+public class RenderedText : Image {
+
+    /////////////////////////////////////////////////////////////////////
+    /// A cache which stores images. It is cleared when the theme of
+    /// Gnome-Pie changes.
+    /// The key is in form <string>@<width>x<height>:<font>.
+    /////////////////////////////////////////////////////////////////////
+
+    private static Gee.HashMap<string, Cairo.ImageSurface?> cache { private get; private set; }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Initializes the cache.
+    /////////////////////////////////////////////////////////////////////
+    
+    public static void init() {
+        clear_cache();
+        
+        Config.global.notify["theme"].connect(() => {
+            clear_cache();
+        });
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Clears the cache.
+    /////////////////////////////////////////////////////////////////////
+    
+    static void clear_cache() {
+        cache = new Gee.HashMap<string, Cairo.ImageSurface?>();
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// C'tor, creates a new image representation of a string.
+    /////////////////////////////////////////////////////////////////////
+    
+    public RenderedText(string text, int width, int height, string font) {
+        var cached = this.cache.get("%s@%ux%u:%s".printf(text, width, height, font));
+        
+        if (cached == null) {
+            this.render_text(text, width, height, font);
+            this.cache.set("%s@%ux%u:%s".printf(text, width, height, font), this.surface);
+        } else {
+            this.surface = cached;
+        }
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Creates a new transparent image, with text written onto.
+    /////////////////////////////////////////////////////////////////////
+    
+    public void render_text(string text, int width, int height, string font) {
+        this.surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, width, height);
+
+        var ctx = this.context();
+        
+        // set the color as specified in the current theme
+        Color color = Config.global.theme.caption_color;
+        ctx.set_source_rgb(color.r, color.g, color.g);
+        
+        var layout = Pango.cairo_create_layout(ctx);        
+        layout.set_width(Pango.units_from_double(width));
+        
+        var font_description = Pango.FontDescription.from_string(font);
+        font_description.set_size((int)(font_description.get_size() * Config.global.global_scale));
+        
+        layout.set_font_description(font_description);
+        layout.set_text(text, -1);
+        
+        // add newlines at the end of each line, in order to allow ellipsizing
+        string broken_string = "";
+        foreach (var line in layout.get_lines()) {
+            broken_string = broken_string.concat(text.substring(line.start_index, line.length), "\n");
+        }
+        layout.set_text(broken_string, broken_string.length-1);
+        
+        layout.set_ellipsize(Pango.EllipsizeMode.END);
+        layout.set_alignment(Pango.Alignment.CENTER);
+        
+        Pango.Rectangle extents;
+        layout.get_pixel_extents(null, out extents);
+        ctx.move_to(0, (int)(0.5*(height - extents.height)));
+        
+        Pango.cairo_update_layout(ctx, layout);
+        Pango.cairo_show_layout(ctx, layout);
+    }
+}
+
+}
diff --git a/src/images/themedIcon.vala b/src/images/themedIcon.vala
new file mode 100644
index 0000000..29ae380
--- /dev/null
+++ b/src/images/themedIcon.vala
@@ -0,0 +1,161 @@
+/* 
+Copyright (c) 2011 by Simon Schneegans
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the Free
+Software Foundation, either version 3 of the License, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>. 
+*/
+
+namespace GnomePie {
+
+/////////////////////////////////////////////////////////////////////////    
+/// A class representing a square-shaped icon, themed according to the
+/// current theme of Gnome-Pie.
+/////////////////////////////////////////////////////////////////////////
+
+public class ThemedIcon : Image {
+
+    /////////////////////////////////////////////////////////////////////
+    /// A cache which stores loaded icon. The key is the icon name. When
+    /// the users icon theme or the theme of Gnome-Pie changes, these
+    /// cahces are cleared.
+    /////////////////////////////////////////////////////////////////////
+
+    private static Gee.HashMap<string, Cairo.ImageSurface?> active_cache { private get; private set; }
+    private static Gee.HashMap<string, Cairo.ImageSurface?> inactive_cache { private get; private set; }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Initializes the caches.
+    /////////////////////////////////////////////////////////////////////
+    
+    public static void init() {
+        clear_cache();
+        
+        Config.global.notify["theme"].connect(() => {
+            clear_cache();
+        });
+        
+        Gtk.IconTheme.get_default().changed.connect(() => {
+            clear_cache();
+        });
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Clears the cache.
+    /////////////////////////////////////////////////////////////////////
+    
+    public static void clear_cache() {
+        active_cache = new Gee.HashMap<string, Cairo.ImageSurface?>();
+        inactive_cache = new Gee.HashMap<string, Cairo.ImageSurface?>();
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Paint a slice icon according to the current theme.
+    /////////////////////////////////////////////////////////////////////
+    
+    public ThemedIcon(string icon_name, bool active) {
+        // check cache
+        var current_cache = active ? active_cache : inactive_cache;
+        var cached = current_cache.get(icon_name);
+        
+        if (cached != null) {
+            this.surface = cached;
+            return;
+        }
+    
+        // get layers for the desired slice type
+        var layers = active ? Config.global.theme.active_slice_layers : Config.global.theme.inactive_slice_layers;
+        
+        // get max size
+        int size = 0;
+        foreach (var layer in layers) {
+            if (layer.image.width() > size) size = layer.image.width();
+        }
+        
+        this.surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, size, size);
+        
+        // get size of icon layer
+        int icon_size = size;
+        foreach (var layer in layers) {
+            if (layer.is_icon) icon_size = layer.image.width();
+        }
+    
+        Image icon;
+        if (icon_name.contains("/"))
+            icon = new Image.from_file_at_size(icon_name, icon_size, icon_size);
+        else
+            icon = new Icon(icon_name, icon_size);
+        
+        var color = new Color.from_icon(icon);
+        var ctx = this.context();
+        
+        ctx.translate(size/2, size/2);
+        ctx.set_operator(Cairo.Operator.OVER);
+        
+        // now render all layers on top of each other
+        foreach (var layer in layers) {
+        
+            if (layer.colorize) {
+                ctx.push_group();
+            }
+                    
+            if (layer.is_icon) {
+            
+                ctx.push_group();
+                
+                layer.image.paint_on(ctx);
+                
+                ctx.set_operator(Cairo.Operator.IN);
+                
+                if (layer.image.width() != icon_size) {
+                    if (icon_name.contains("/"))
+                        icon = new Image.from_file_at_size(icon_name, layer.image.width(), layer.image.width());
+                    else
+                        icon = new Icon(icon_name,layer.image.width());
+                }
+                
+                icon.paint_on(ctx);
+
+                ctx.pop_group_to_source();
+                ctx.paint();
+                ctx.set_operator(Cairo.Operator.OVER);
+                
+            } else {
+                layer.image.paint_on(ctx);
+            }
+            
+            // colorize the whole layer if neccasary
+            if (layer.colorize) {
+                ctx.set_operator(Cairo.Operator.ATOP);
+                ctx.set_source_rgb(color.r, color.g, color.b);
+                ctx.paint();
+                
+                ctx.set_operator(Cairo.Operator.OVER);
+                ctx.pop_group_to_source();
+                ctx.paint();
+            }
+        }
+        
+        // store the surface in cache
+        current_cache.set(icon_name, this.surface);
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Returns the size of the icon in pixels. Greetings to Liskov.
+    /////////////////////////////////////////////////////////////////////
+    
+    public int size() {
+        return base.width();
+    }
+}
+
+}