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/renderedText.vala | 110 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 src/images/renderedText.vala (limited to 'src/images/renderedText.vala') 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 . +*/ + +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 @x:. + ///////////////////////////////////////////////////////////////////// + + private static Gee.HashMap 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(); + } + + ///////////////////////////////////////////////////////////////////// + /// 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); + } +} + +} -- 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/renderedText.vala | 75 +++++++++++++++++++++++++++++++++++++++----- 1 file changed, 67 insertions(+), 8 deletions(-) (limited to 'src/images/renderedText.vala') diff --git a/src/images/renderedText.vala b/src/images/renderedText.vala index 924742a..e4bb4cb 100644 --- a/src/images/renderedText.vala +++ b/src/images/renderedText.vala @@ -55,12 +55,36 @@ public class RenderedText : Image { /// 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)); + public RenderedText(string text, int width, int height, string font, + Color color, double scale) { + + var cached = this.cache.get("%s@%ux%u@%f:%s:%f:%f:%f:%f".printf(text, width, height, scale, font, + color.r, color.g, color.b, color.a)); if (cached == null) { - this.render_text(text, width, height, font); - this.cache.set("%s@%ux%u:%s".printf(text, width, height, font), this.surface); + this.render_text(text, width, height, font, color, scale); + this.cache.set("%s@%ux%u@%f:%s:%f:%f:%f:%f".printf(text, width, height, scale, font, + color.r, color.g, color.b, color.a), this.surface); + } else { + this.surface = cached; + } + } + + ///////////////////////////////////////////////////////////////////// + /// C'tor, creates a new image representation of a string. This + /// string may contain markup information. + ///////////////////////////////////////////////////////////////////// + + public RenderedText.with_markup(string text, int width, int height, string font, + Color color, double scale) { + + var cached = this.cache.get("%s@%ux%u@%f:%s:%f:%f:%f:%f".printf(text, width, height, scale, font, + color.r, color.g, color.b, color.a)); + + if (cached == null) { + this.render_markup(text, width, height, font, color, scale); + this.cache.set("%s@%ux%u@%f:%s:%f:%f:%f:%f".printf(text, width, height, scale, font, + color.r, color.g, color.b, color.a), this.surface); } else { this.surface = cached; } @@ -70,20 +94,21 @@ public class RenderedText : Image { /// Creates a new transparent image, with text written onto. ///////////////////////////////////////////////////////////////////// - public void render_text(string text, int width, int height, string font) { + public void render_text(string text, int width, int height, string font, + Color color, double scale) { + 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; + // set the 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)); + font_description.set_size((int)(font_description.get_size() * scale)); layout.set_font_description(font_description); layout.set_text(text, -1); @@ -105,6 +130,40 @@ public class RenderedText : Image { Pango.cairo_update_layout(ctx, layout); Pango.cairo_show_layout(ctx, layout); } + + ///////////////////////////////////////////////////////////////////// + /// Creates a new transparent image, with text written onto. + ///////////////////////////////////////////////////////////////////// + + public void render_markup(string text, int width, int height, string font, + Color color, double scale) { + + this.surface = new Cairo.ImageSurface(Cairo.Format.ARGB32, width, height); + + var ctx = this.context(); + + // set the 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() * scale)); + + layout.set_font_description(font_description); + layout.set_markup(text, -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); + } } } -- cgit v1.2.3