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Diffstat (limited to 'src/utilities/image.vala')
| -rw-r--r-- | src/utilities/image.vala | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/src/utilities/image.vala b/src/utilities/image.vala deleted file mode 100644 index 836e4e2..0000000 --- a/src/utilities/image.vala +++ /dev/null @@ -1,163 +0,0 @@ -/* -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(); - } -} - -} |