diff options
Diffstat (limited to 'src/images/renderedText.vala')
| -rw-r--r-- | src/images/renderedText.vala | 118 |
1 files changed, 59 insertions, 59 deletions
diff --git a/src/images/renderedText.vala b/src/images/renderedText.vala index 544af1f..2f4b82f 100644 --- a/src/images/renderedText.vala +++ b/src/images/renderedText.vala @@ -1,149 +1,149 @@ -/* -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/>. -*/ +///////////////////////////////////////////////////////////////////////// +// Copyright (c) 2011-2015 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 { - + ///////////////////////////////////////////////////////////////////// /// C'tor, creates a new image representation of a string. ///////////////////////////////////////////////////////////////////// - + public RenderedText(string text, int width, int height, string font, Color color, double scale) { - + this.render_text(text, width, height, font, color, scale); } - + ///////////////////////////////////////////////////////////////////// /// 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) { this.render_markup(text, width, height, font, color, scale); } - + ///////////////////////////////////////////////////////////////////// /// 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); if (text != "") { var ctx = this.context(); - + // set the color ctx.set_source_rgb(color.r, color.g, color.g); - - var layout = Pango.cairo_create_layout(ctx); + + 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_text(text, -1); - + // add newlines at the end of each line, in order to allow ellipsizing string broken_string = ""; - + for (int i=0; i<layout.get_line_count(); ++i) { - + string next_line = ""; - if (i == layout.get_line_count() -1) + if (i == layout.get_line_count() -1) next_line = text.substring(layout.get_line(i).start_index, -1); - else + else next_line = text.substring(layout.get_line(i).start_index, layout.get_line(i).length); - + if (broken_string == "") { broken_string = next_line; } else if (next_line != "") { // test whether the addition of a line would cause the height to become too large string broken_string_tmp = broken_string + "\n" + next_line; - - var layout_tmp = Pango.cairo_create_layout(ctx); + + var layout_tmp = Pango.cairo_create_layout(ctx); layout_tmp.set_width(Pango.units_from_double(width)); - + layout_tmp.set_font_description(font_description); - + layout_tmp.set_text(broken_string_tmp, -1); Pango.Rectangle extents; layout_tmp.get_pixel_extents(null, out extents); - + if (extents.height > height) broken_string = broken_string + next_line; else broken_string = broken_string_tmp; } } - + layout.set_text(broken_string, -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); } } - + ///////////////////////////////////////////////////////////////////// /// Creates a new transparent image, with text written onto. ///////////////////////////////////////////////////////////////////// - - public void render_markup(string text, int width, int height, string font, + + 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 + + // set the color ctx.set_source_rgb(color.r, color.g, color.g); - - var layout = Pango.cairo_create_layout(ctx); + + 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); } |