ugfx/demos/modules/gwin/button/main.c

/*
 * Copyright (c) 2012, 2013, Joel Bodenmann aka Tectu <joel@unormal.org>
 * Copyright (c) 2012, 2013, Andrew Hannam aka inmarket
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *    * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *    * Neither the name of the <organization> nor the
 *      names of its contributors may be used to endorse or promote products
 *      derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "gfx.h"

static GListener gl;
static GHandle   ghButton1;

static void createWidgets(void) {
	GWidgetInit	wi;

	// Apply some default values for GWIN
	gwinWidgetClearInit(&wi);
	wi.g.show = gTrue;

	// Apply the button parameters
	wi.g.width = 100;
	wi.g.height = 30;
	wi.g.y = 10;
	wi.g.x = 10;
	wi.text = "Push Button";

	// Create the actual button
	ghButton1 = gwinButtonCreate(0, &wi);
}

int main(void) {
	GEvent* pe;
	static const gOrientation	orients[] = { gOrientation0, gOrientation90, gOrientation180, gOrientation270 };
	unsigned which;

	// Initialize the display
	gfxInit();

	// We are currently at gOrientation0
	which = 0;
	gdispSetOrientation(orients[which]);

	// Set the widget defaults
	gwinSetDefaultFont(gdispOpenFont("UI2"));
	gwinSetDefaultStyle(&WhiteWidgetStyle, gFalse);
	gdispClear(GFX_WHITE);

	// create the widget
	createWidgets();

	// We want to listen for widget events
	geventListenerInit(&gl);
	gwinAttachListener(&gl);

	while(1) {
		// Get an Event
		pe = geventEventWait(&gl, gDelayForever);

		switch(pe->type) {
			case GEVENT_GWIN_BUTTON:
				if (((GEventGWinButton*)pe)->gwin == ghButton1) {
					// Our button has been pressed
					if (++which >= sizeof(orients)/sizeof(orients[0]))
						which = 0;

					// Setting the orientation during run-time is a bit naughty particularly with
					// GWIN windows. In this case however we know that the button is in the top-left
					// corner which should translate safely into any orientation.
					gdispSetOrientation(orients[which]);
					gdispClear(GFX_WHITE);
					gwinRedrawDisplay(GDISP, gFalse);
				}
				break;

			default:
				break;
		}
	}

	return 0;
}