diff options
Diffstat (limited to 'src/images/image.vala')
| -rw-r--r-- | src/images/image.vala | 95 |
1 files changed, 45 insertions, 50 deletions
diff --git a/src/images/image.vala b/src/images/image.vala index 197523b..e65e34a 100644 --- a/src/images/image.vala +++ b/src/images/image.vala @@ -1,4 +1,4 @@ -/* +/* Copyright (c) 2011 by Simon Schneegans This program is free software: you can redistribute it and/or modify it @@ -12,78 +12,73 @@ 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/>. +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. +/// 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) { if (pixbuf != null) this.load_pixbuf(pixbuf); else this.surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, 1, 1); } - + ///////////////////////////////////////////////////////////////////// /// 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(); - #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 - + Gdk.Pixbuf pixbuf = Gdk.pixbuf_get_from_window(root, posx, posy, width, height); this.load_pixbuf(pixbuf); - + if (hide_pies) { // check for opened pies foreach (var window in PieManager.opened_windows) { @@ -93,21 +88,21 @@ public class Image : GLib.Object { 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)); + ctx.translate((int)(x-posx + (dx+3)/2), (int)(y-posy + (dy+3)/2)); window.background.paint_on(ctx); } } } } - + ///////////////////////////////////////////////////////////////////// /// 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 { @@ -119,64 +114,64 @@ public class Image : GLib.Object { 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 + "!"); this.surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, width, height); } - + } 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, (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() { if (this.surface == null || this.surface.get_data().length <= 0) return new Gdk.Pixbuf(Gdk.Colorspace.RGB, true, 8, 1, 1); - - var pixbuf = new Gdk.Pixbuf.from_data(this.surface.get_data(), Gdk.Colorspace.RGB, true, 8, + + var pixbuf = new Gdk.Pixbuf.from_data(this.surface.get_data(), Gdk.Colorspace.RGB, true, 8, width(), height(), this.surface.get_stride(), null); - + pixbuf = pixbuf.copy(); - - // funny stuff here --- need to swap Red end Blue because Cairo + + // 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) { @@ -187,29 +182,29 @@ public class Image : GLib.Object { return pixbuf; } - + ///////////////////////////////////////////////////////////////////// /// 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() { if (this.surface != null) return this.surface.get_width(); return 0; } - + ///////////////////////////////////////////////////////////////////// /// Returns the height of the image in pixels. ///////////////////////////////////////////////////////////////////// - + public int height() { if (this.surface != null) return this.surface.get_height(); 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