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107 lines
3.1 KiB
107 lines
3.1 KiB
//======================================================================== |
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// Mouse cursor accuracy test |
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// Copyright (c) Camilla Berglund <elmindreda@elmindreda.org> |
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// |
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// This software is provided 'as-is', without any express or implied |
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// warranty. In no event will the authors be held liable for any damages |
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// arising from the use of this software. |
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// |
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// Permission is granted to anyone to use this software for any purpose, |
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// including commercial applications, and to alter it and redistribute it |
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// freely, subject to the following restrictions: |
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// |
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// 1. The origin of this software must not be misrepresented; you must not |
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// claim that you wrote the original software. If you use this software |
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// in a product, an acknowledgment in the product documentation would |
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// be appreciated but is not required. |
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// |
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// 2. Altered source versions must be plainly marked as such, and must not |
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// be misrepresented as being the original software. |
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// |
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// 3. This notice may not be removed or altered from any source |
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// distribution. |
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// |
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//======================================================================== |
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// |
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// This test came about as the result of bug #1867804 |
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// |
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// No sign of said bug has so far been detected |
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// |
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//======================================================================== |
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#include <GL/glfw3.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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static int cursor_x = 0, cursor_y = 0; |
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static int window_width = 640, window_height = 480; |
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static void window_size_callback(GLFWwindow window, int width, int height) |
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{ |
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window_width = width; |
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window_height = height; |
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glViewport(0, 0, window_width, window_height); |
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glMatrixMode(GL_PROJECTION); |
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glLoadIdentity(); |
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gluOrtho2D(0.f, window_width, 0.f, window_height); |
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} |
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static void mouse_position_callback(GLFWwindow window, int x, int y) |
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{ |
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cursor_x = x; |
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cursor_y = y; |
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} |
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int main(void) |
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{ |
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GLFWwindow window; |
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if (!glfwInit()) |
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{ |
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fprintf(stderr, "Failed to initialize GLFW: %s\n", glfwErrorString(glfwGetError())); |
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exit(EXIT_FAILURE); |
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} |
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window = glfwOpenWindow(window_width, window_height, GLFW_WINDOWED); |
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if (!window) |
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{ |
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glfwTerminate(); |
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fprintf(stderr, "Failed to open GLFW window: %s\n", glfwErrorString(glfwGetError())); |
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exit(EXIT_FAILURE); |
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} |
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glfwSetWindowTitle(window, "Cursor Inaccuracy Detector"); |
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glfwSetMousePosCallback(window, mouse_position_callback); |
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glfwSetWindowSizeCallback(window, window_size_callback); |
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glfwSwapInterval(1); |
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glClearColor(0, 0, 0, 0); |
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glMatrixMode(GL_MODELVIEW); |
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glLoadIdentity(); |
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while (glfwIsWindow(window)) |
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{ |
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glClear(GL_COLOR_BUFFER_BIT); |
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glColor3f(1.f, 1.f, 1.f); |
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glBegin(GL_LINES); |
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glVertex2f(0.f, (GLfloat) window_height - cursor_y); |
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glVertex2f((GLfloat) window_width, (GLfloat) window_height - cursor_y); |
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glVertex2f((GLfloat) cursor_x, 0.f); |
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glVertex2f((GLfloat) cursor_x, (GLfloat) window_height); |
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glEnd(); |
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glfwSwapBuffers(); |
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glfwPollEvents(); |
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} |
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glfwTerminate(); |
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exit(EXIT_SUCCESS); |
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} |
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