From d6b2677825cbb423e2099563c16321c3e23d7899 Mon Sep 17 00:00:00 2001 From: Alessandro Ghedini Date: Sun, 20 Nov 2011 15:50:38 +0100 Subject: Imported Upstream version 0.3.1 --- src/images/image.vala | 163 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 163 insertions(+) create mode 100644 src/images/image.vala (limited to 'src/images/image.vala') 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 . +*/ + +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(); + } +} + +} -- cgit v1.2.3 From 60560a030fda3c539ff9dc1563b9926414a193da Mon Sep 17 00:00:00 2001 From: Alessandro Ghedini 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