gui/widget: add class CHourGlass

Provides an hourglass/snake-loader function to visualize running processes.
A template xcf-file for Gimp 2.10 is appended. Feel free to edit.


Origin commit data
------------------
Commit: 0e809c9c76
Author: Thilo Graf <dbt@novatux.de>
Date: 2021-10-09 (Sat, 09 Oct 2021)

src/gui/widget/hourglass.cpp

@@ -0,0 +1,138 @@
+/*
+	Based up Neutrino-GUI - Tuxbox-Project
+	Copyright (C) 2001 by Steffen Hehn 'McClean'
+
+	Hourglass, provides an hourglass/snakeloader function to visualize running processes.
+	Copyright (C) 2021, Thilo Graf 'dbt'
+
+	License: GPL
+
+	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 2 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/>.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "hourglass.h"
+
+#include <global.h>
+
+#include <system/debug.h>
+#include <system/helpers.h>
+#include <neutrinoMessages.h>
+
+#define MAX_IMAGES 24
+
+CHourGlass::CHourGlass(	const int x_pos,
+			const int y_pos,
+			const int w,
+			const int h,
+			const std::string& image_basename,
+			const int64_t& interval,
+			CComponentsForm *parent,
+			int shadow_mode,
+			fb_pixel_t color_frame,
+			fb_pixel_t color_body,
+			fb_pixel_t color_shadow) : CComponentsShapeSquare(x_pos, y_pos, w, h, parent, shadow_mode, color_frame, color_body, color_shadow)
+{
+	cc_item_type.name	="wg_hourglass";
+
+	hg_image_basename 	= image_basename;
+	cc_bg_image 		= cc_bg_image_old = cc_bg_sel_image = cc_bg_sec_image = "";
+
+	initImageFiles();
+
+	hg_file_num		= 0;
+	hg_interval		= interval;
+	hg_timer		= new CComponentsTimer(hg_interval);
+	hg_timer->OnTimer.connect(sigc::bind(sigc::mem_fun(*this, &CHourGlass::paint), true));
+}
+
+CHourGlass::~CHourGlass()
+{
+	delete hg_timer;
+	hg_timer = NULL;
+}
+
+void CHourGlass::initImageFiles()
+{
+	std::string path = "";
+	std::string filename = "";
+	hg_img_files.clear();
+
+	for(int i = 0; i <= MAX_IMAGES; i++)
+	{
+		filename = hg_image_basename;
+		filename += to_string(i);
+		path = frameBuffer->getIconPath(filename, "png");
+		if (file_exists(path))
+			hg_img_files.push_back(filename);
+		else
+			continue;
+	}
+}
+
+void CHourGlass::paint(const bool &do_save_bg)
+{
+	if (hg_img_files.empty())
+		return;
+
+	if (hg_file_num > hg_img_files.size()-1)
+		hg_file_num = 0;
+
+	cc_bg_image = frameBuffer->getIconPath(hg_img_files.at(hg_file_num), "png");
+
+	hide();
+
+	if (!hg_timer->isRun())
+		hg_timer->startTimer();
+	else 
+		paintInit(do_save_bg);
+
+	hg_file_num ++;
+}
+
+
+CHourGlassProc::CHourGlassProc(	const int x_pos,
+		const int y_pos,
+		const sigc::slot<void> &Slot,
+		const int w,
+		const int h,
+		const std::string& image_basename,
+		const int64_t& interval,
+		CComponentsForm *parent,
+		int shadow_mode,
+		fb_pixel_t color_frame,
+		fb_pixel_t color_body,
+		fb_pixel_t color_shadow) : CHourGlass(x_pos, y_pos, w, h, image_basename, interval, parent, shadow_mode, color_frame, color_body, color_shadow)
+{
+	cc_item_type.name	="wg_hourglass_proc";
+
+	OnRun.connect(Slot);
+}
+
+void CHourGlassProc::paint(const bool &do_save_bg)
+{
+	CHourGlass::paint(do_save_bg);
+}
+
+int CHourGlassProc::exec()
+{
+	paint(true);
+	OnRun();
+	hide();
+
+	return messages_return::handled;
+}