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/*
* Copyright 2013 The Emscripten Authors. All rights reserved.
* Emscripten is available under two separate licenses, the MIT license and the
* University of Illinois/NCSA Open Source License. Both these licenses can be
* found in the LICENSE file.
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <GL/glut.h>
#include <EGL/egl.h>
#include <emscripten.h>
#define MULTILINE(...) #__VA_ARGS__
int touch_started_button = -1;
int touch_started_x = -1;
int touch_started_y = -1;
int touch_ended_button = -1;
int touch_ended_x = -1;
int touch_ended_y = -1;
void mouseCB(int button, int state, int x, int y)
{
if (button == GLUT_LEFT_BUTTON) {
if(state == GLUT_DOWN) {
printf("GLUT_DOWN: button: %d, x: %d, y: %d\n", button, x, y);
touch_started_button = button;
touch_started_x = x;
touch_started_y = y;
}
else if(state == GLUT_UP) {
printf("GLUT_UP: button: %d, x: %d, y: %d\n", button, x, y);
touch_ended_button = button;
touch_ended_x = x;
touch_ended_y = y;
}
}
}
#define abs(x) ((x) < 0 ? -(x) : (x))
int main(int argc, char *argv[])
{
emscripten_run_script(MULTILINE(
Module.injectEvent = function(eventType, wantedX, wantedY) {
// Desktop browsers do not have the event types for touch events,
// so we fake them by creating a plain-vanilla UIEvent and then
// filling in the fields that we look for with appropriate values.
var rect = Module["canvas"].getBoundingClientRect();
out('rect corner: ' + rect.left + ',' + rect.top);
out('wanted: ' + wantedX + ',' + wantedY);
var x = wantedX + rect.left;
var y = wantedY + rect.top;
var touch = {
identifier: 0,
clientX: x,
clientY: y,
screenX: x,
screenY: y,
pageX: x,
pageY: y,
target: Module['canvas']
};
var touches = [ touch ];
touches.item = function(i) { return this[i]; };
var event = document.createEvent('UIEvent');
event.target = Module['canvas'];
event.button = 0;
event.changedTouches = touches;
event.initUIEvent(eventType, true, true, window, 1);
Module['canvas'].dispatchEvent(event);
}
));
// Fake a touch device so that glut sets up the appropriate event handlers.
emscripten_run_script("document.documentElement['ontouchstart'] = 1");
glutInit(&argc, argv);
glutMouseFunc(&mouseCB);
emscripten_run_script("Module.injectEvent('touchstart', 101, 112)");
emscripten_run_script("Module.injectEvent('touchend', 201, 212)");
printf("touchstarted: button:%d x:%d y:%d\n", touch_started_button, touch_started_x, touch_started_y);
printf("touchended: button:%d x:%d y:%d\n", touch_ended_button, touch_ended_x, touch_ended_y);
assert(touch_started_button == 0);
assert(abs(touch_started_x - 101) <= 1);
assert(abs(touch_started_y - 112) <= 1);
assert(touch_ended_button == 0);
assert(abs(touch_ended_x - 201) <= 1);
assert(abs(touch_ended_y - 212) <= 1);
return 0;
}
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