glfw/tests/peter.c

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//========================================================================
// Mouse cursor bug test
// Copyright (c) Camilla Berglund <elmindreda@elmindreda.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
//
// This test came about as the result of bugs #1262764, #1726540 and
// #1726592, all reported by the user peterpp, hence the name
//
// The utility of this test outside of these bugs is uncertain
//
//========================================================================
#include <GL/glfw.h>
#include <stdio.h>
#include <stdlib.h>
static GLboolean cursor_enabled = GL_TRUE;
static GLboolean open_window(void);
static void toggle_mouse_cursor(void)
{
if (cursor_enabled)
glfwDisable(GLFW_MOUSE_CURSOR);
else
glfwEnable(GLFW_MOUSE_CURSOR);
cursor_enabled = !cursor_enabled;
}
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static void mouse_position_callback(int x, int y)
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{
printf("Mouse moved to: %i %i\n", x, y);
}
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static void key_callback(int key, int action)
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{
switch (key)
{
case GLFW_KEY_SPACE:
{
if (action == GLFW_PRESS)
toggle_mouse_cursor();
break;
}
case 'R':
{
if (action == GLFW_PRESS)
{
glfwCloseWindow();
open_window();
}
break;
}
}
}
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static void window_size_callback(int width, int height)
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{
glViewport(0, 0, width, height);
}
static GLboolean open_window(void)
{
int x, y;
if (!glfwOpenWindow(0, 0, 0, 0, 0, 0, 0, 0, GLFW_WINDOW))
return GL_FALSE;
glfwSetWindowTitle("Peter Detector");
glfwGetMousePos(&x, &y);
printf("Mouse position: %i %i\n", x, y);
glfwDisable(GLFW_AUTO_POLL_EVENTS);
glfwSetWindowSizeCallback(window_size_callback);
glfwSetMousePosCallback(mouse_position_callback);
glfwSetKeyCallback(key_callback);
glfwSwapInterval(1);
return GL_TRUE;
}
int main(void)
{
if (!glfwInit())
{
fprintf(stderr, "Failed to initialize GLFW\n");
exit(1);
}
if (!open_window())
{
glfwTerminate();
fprintf(stderr, "Failed to open GLFW window\n");
exit(1);
}
glClearColor(0.f, 0.f, 0.f, 0.f);
while (glfwGetWindowParam(GLFW_OPENED))
{
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers();
glfwWaitEvents();
}
glfwTerminate();
exit(0);
}