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/* -*- Mode: Vala; indent-tabs-mode: nil; tab-width: 4 -*-
* -*- coding: utf-8 -*-
*
* Copyright (C) 2011 ~ 2018 Deepin, Inc.
* 2011 ~ 2018 Wang Yong
*
* Author: Wang Yong <wangyong@deepin.com>
* Maintainer: Wang Yong <wangyong@deepin.com>
*
* 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
* 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/>.
*/
using Gtk;
using Widgets;
namespace Widgets {
public class ProgressBar : Gtk.EventBox {
public double draw_percent;
public double percent;
public int height = 22;
public Cairo.ImageSurface pointer_surface;
public Gdk.RGBA background_color;
public Gdk.RGBA foreground_color;
public int draw_pointer_offset = 3;
public int line_height = 2;
public int line_margin_top = 10;
public int width = Constant.PREFERENCE_WIDGET_WIDTH;
public signal void update(double percent);
public ProgressBar(double init_percent) {
percent = init_percent;
set_size_request(width, height);
foreground_color = Utils.hex_to_rgba("#2ca7f8");
background_color = Utils.hex_to_rgba("#A4A4A4");
pointer_surface = Utils.create_image_surface("progress_pointer.svg");
button_press_event.connect((w, e) => {
Gtk.Allocation rect;
w.get_allocation(out rect);
set_percent(e.x * 1.0 / rect.width);
return false;
});
motion_notify_event.connect((w, e) => {
Gtk.Allocation rect;
w.get_allocation(out rect);
set_percent(e.x * 1.0 / rect.width);
return false;
});
draw.connect(on_draw);
show_all();
}
public void set_percent(double new_percent) {
percent = double.max(double.min((1 - Constant.TERMINAL_MIN_OPACITY) * new_percent + Constant.TERMINAL_MIN_OPACITY, 1), Constant.TERMINAL_MIN_OPACITY);
draw_percent = double.max(double.min(new_percent, 1), 0);
update(percent);
queue_draw();
}
private bool on_draw(Gtk.Widget widget, Cairo.Context cr) {
Gtk.Allocation rect;
widget.get_allocation(out rect);
int left_offset = 0;
int right_offset = 0;
// Because pointer surface opacity at side.
// So we adjust background line offset to avoid user see background line at two side when percent is 0 or 1.
if (draw_percent == 0) {
left_offset = pointer_surface.get_width() / 2;
right_offset = pointer_surface.get_width() / 2;
} else if (draw_percent == 1) {
left_offset = 0;
right_offset = draw_pointer_offset;
}
Utils.set_context_color(cr, background_color);
Draw.draw_rectangle(cr, left_offset, line_margin_top, rect.width - right_offset, line_height);
if (draw_percent > 0) {
cr.set_source_rgba(1, 0, 1, 1);
Utils.set_context_color(cr, foreground_color);
Draw.draw_rectangle(cr, left_offset, line_margin_top, (int) (rect.width * draw_percent) - right_offset, line_height);
}
Draw.draw_surface(cr,
pointer_surface,
int.max(-draw_pointer_offset,
int.min((int) (rect.width * draw_percent) - pointer_surface.get_width() / 2 / 2,
rect.width - pointer_surface.get_width() + draw_pointer_offset)),
0);
return true;
}
}
}
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