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/*
* Copyright 2015 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 <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <emscripten.h>
#define GLFW_INCLUDE_ES2
#include <GLFW/glfw3.h>
GLFWwindow* g_window;
int inFullscreen = 0;
int wasFullscreen = 0;
void render();
void error_callback(int error, const char* description);
void render() {
glClearColor(1.0f, 1.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
}
void error_callback(int error, const char* description) {
fprintf(stderr, "Error %d: %s\n", error, description);
}
void windowSizeCallback(GLFWwindow* window, int width, int height) {
int isInFullscreen = EM_ASM_INT(return !!(document.fullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || document.msFullscreenElement));
if (isInFullscreen && !wasFullscreen) {
printf("Successfully transitioned to fullscreen mode!\n");
wasFullscreen = isInFullscreen;
}
if (wasFullscreen && !isInFullscreen) {
printf("Exited fullscreen. Test succeeded.\n");
wasFullscreen = isInFullscreen;
emscripten_cancel_main_loop();
exit(0);
}
}
int main() {
// Setup g_window
glfwSetErrorCallback(error_callback);
if (!glfwInit())
{
printf("Could not create window. Test failed.\n");
return 1;
}
glfwWindowHint(GLFW_RESIZABLE , 1);
g_window = glfwCreateWindow(600, 450, "GLFW resizing test - windowed", NULL, NULL);
if (!g_window)
{
printf("Could not create window. Test failed.\n");
glfwTerminate();
return 1;
}
glfwMakeContextCurrent(g_window);
// Install callbacks
glfwSetWindowSizeCallback(g_window, windowSizeCallback);
// Main loop
printf("You should see a yellow canvas.\n");
printf("Check the 'resize canvas' option on the upper right corner and then enter full screen mode.\n");
printf("When in full screen, you should see the whole screen filled yellow, and after exiting, the yellow canvas should be restored in the window.\n");
printf("REMARK: You MUST check the 'resize canvas' option!\n");
emscripten_set_main_loop(render, 0, 1);
__builtin_trap();
glfwTerminate();
return 0;
}
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