From 3b734f0d6b9e28c1f2c4ae54e3f46e573e02f4a5 Mon Sep 17 00:00:00 2001 From: Andreas Grois Date: Fri, 9 Mar 2018 21:36:10 +0100 Subject: Initial Commit --- glfw-3.2.1/tests/cursor.c | 317 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 317 insertions(+) create mode 100644 glfw-3.2.1/tests/cursor.c (limited to 'glfw-3.2.1/tests/cursor.c') diff --git a/glfw-3.2.1/tests/cursor.c b/glfw-3.2.1/tests/cursor.c new file mode 100644 index 0000000..71799dc --- /dev/null +++ b/glfw-3.2.1/tests/cursor.c @@ -0,0 +1,317 @@ +//======================================================================== +// Cursor & input mode tests +// Copyright (c) Camilla Berglund +// +// 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 provides an interface to the cursor image and cursor mode +// parts of the API. +// +// Custom cursor image generation by urraka. +// +//======================================================================== + +#include +#include + +#if defined(_MSC_VER) + // Make MS math.h define M_PI + #define _USE_MATH_DEFINES +#endif + +#include +#include +#include + +#define CURSOR_FRAME_COUNT 60 + +static double cursor_x; +static double cursor_y; +static int swap_interval = 1; +static int wait_events = GLFW_TRUE; +static int animate_cursor = GLFW_FALSE; +static int track_cursor = GLFW_FALSE; +static GLFWcursor* standard_cursors[6]; + +static void error_callback(int error, const char* description) +{ + fprintf(stderr, "Error: %s\n", description); +} + +static float star(int x, int y, float t) +{ + const float c = 64 / 2.f; + + const float i = (0.25f * (float) sin(2.f * M_PI * t) + 0.75f); + const float k = 64 * 0.046875f * i; + + const float dist = (float) sqrt((x - c) * (x - c) + (y - c) * (y - c)); + + const float salpha = 1.f - dist / c; + const float xalpha = (float) x == c ? c : k / (float) fabs(x - c); + const float yalpha = (float) y == c ? c : k / (float) fabs(y - c); + + return (float) fmax(0.f, fmin(1.f, i * salpha * 0.2f + salpha * xalpha * yalpha)); +} + +static GLFWcursor* create_cursor_frame(float t) +{ + int i = 0, x, y; + unsigned char buffer[64 * 64 * 4]; + const GLFWimage image = { 64, 64, buffer }; + + for (y = 0; y < image.width; y++) + { + for (x = 0; x < image.height; x++) + { + buffer[i++] = 255; + buffer[i++] = 255; + buffer[i++] = 255; + buffer[i++] = (unsigned char) (255 * star(x, y, t)); + } + } + + return glfwCreateCursor(&image, image.width / 2, image.height / 2); +} + +static void cursor_position_callback(GLFWwindow* window, double x, double y) +{ + printf("%0.3f: Cursor position: %f %f (%+f %+f)\n", + glfwGetTime(), + x, y, x - cursor_x, y - cursor_y); + + cursor_x = x; + cursor_y = y; +} + +static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) +{ + if (action != GLFW_PRESS) + return; + + switch (key) + { + case GLFW_KEY_A: + { + animate_cursor = !animate_cursor; + if (!animate_cursor) + glfwSetCursor(window, NULL); + + break; + } + + case GLFW_KEY_ESCAPE: + { + if (glfwGetInputMode(window, GLFW_CURSOR) != GLFW_CURSOR_DISABLED) + { + glfwSetWindowShouldClose(window, GLFW_TRUE); + break; + } + + /* FALLTHROUGH */ + } + + case GLFW_KEY_N: + glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL); + printf("(( cursor is normal ))\n"); + break; + + case GLFW_KEY_D: + glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED); + printf("(( cursor is disabled ))\n"); + break; + + case GLFW_KEY_H: + glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN); + printf("(( cursor is hidden ))\n"); + break; + + case GLFW_KEY_SPACE: + swap_interval = 1 - swap_interval; + printf("(( swap interval: %i ))\n", swap_interval); + glfwSwapInterval(swap_interval); + break; + + case GLFW_KEY_W: + wait_events = !wait_events; + printf("(( %sing for events ))\n", wait_events ? "wait" : "poll"); + break; + + case GLFW_KEY_T: + track_cursor = !track_cursor; + break; + + case GLFW_KEY_0: + glfwSetCursor(window, NULL); + break; + + case GLFW_KEY_1: + glfwSetCursor(window, standard_cursors[0]); + break; + + case GLFW_KEY_2: + glfwSetCursor(window, standard_cursors[1]); + break; + + case GLFW_KEY_3: + glfwSetCursor(window, standard_cursors[2]); + break; + + case GLFW_KEY_4: + glfwSetCursor(window, standard_cursors[3]); + break; + + case GLFW_KEY_5: + glfwSetCursor(window, standard_cursors[4]); + break; + + case GLFW_KEY_6: + glfwSetCursor(window, standard_cursors[5]); + break; + } +} + +int main(void) +{ + int i; + GLFWwindow* window; + GLFWcursor* star_cursors[CURSOR_FRAME_COUNT]; + GLFWcursor* current_frame = NULL; + + glfwSetErrorCallback(error_callback); + + if (!glfwInit()) + exit(EXIT_FAILURE); + + for (i = 0; i < CURSOR_FRAME_COUNT; i++) + { + star_cursors[i] = create_cursor_frame(i / (float) CURSOR_FRAME_COUNT); + if (!star_cursors[i]) + { + glfwTerminate(); + exit(EXIT_FAILURE); + } + } + + for (i = 0; i < sizeof(standard_cursors) / sizeof(standard_cursors[0]); i++) + { + const int shapes[] = { + GLFW_ARROW_CURSOR, + GLFW_IBEAM_CURSOR, + GLFW_CROSSHAIR_CURSOR, + GLFW_HAND_CURSOR, + GLFW_HRESIZE_CURSOR, + GLFW_VRESIZE_CURSOR + }; + + standard_cursors[i] = glfwCreateStandardCursor(shapes[i]); + if (!standard_cursors[i]) + { + glfwTerminate(); + exit(EXIT_FAILURE); + } + } + + window = glfwCreateWindow(640, 480, "Cursor Test", NULL, NULL); + if (!window) + { + glfwTerminate(); + exit(EXIT_FAILURE); + } + + glfwMakeContextCurrent(window); + gladLoadGLLoader((GLADloadproc) glfwGetProcAddress); + + glfwGetCursorPos(window, &cursor_x, &cursor_y); + printf("Cursor position: %f %f\n", cursor_x, cursor_y); + + glfwSetCursorPosCallback(window, cursor_position_callback); + glfwSetKeyCallback(window, key_callback); + + while (!glfwWindowShouldClose(window)) + { + glClear(GL_COLOR_BUFFER_BIT); + + if (track_cursor) + { + int wnd_width, wnd_height, fb_width, fb_height; + float scale; + + glfwGetWindowSize(window, &wnd_width, &wnd_height); + glfwGetFramebufferSize(window, &fb_width, &fb_height); + + scale = (float) fb_width / (float) wnd_width; + + glViewport(0, 0, fb_width, fb_height); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0.f, fb_width, 0.f, fb_height, 0.f, 1.f); + + glBegin(GL_LINES); + glVertex2f(0.f, (GLfloat) (fb_height - cursor_y * scale)); + glVertex2f((GLfloat) fb_width, (GLfloat) (fb_height - cursor_y * scale)); + glVertex2f((GLfloat) cursor_x * scale, 0.f); + glVertex2f((GLfloat) cursor_x * scale, (GLfloat) fb_height); + glEnd(); + } + + glfwSwapBuffers(window); + + if (animate_cursor) + { + const int i = (int) (glfwGetTime() * 30.0) % CURSOR_FRAME_COUNT; + if (current_frame != star_cursors[i]) + { + glfwSetCursor(window, star_cursors[i]); + current_frame = star_cursors[i]; + } + } + else + current_frame = NULL; + + if (wait_events) + { + if (animate_cursor) + glfwWaitEventsTimeout(1.0 / 30.0); + else + glfwWaitEvents(); + } + else + glfwPollEvents(); + + // Workaround for an issue with msvcrt and mintty + fflush(stdout); + } + + glfwDestroyWindow(window); + + for (i = 0; i < CURSOR_FRAME_COUNT; i++) + glfwDestroyCursor(star_cursors[i]); + + for (i = 0; i < sizeof(standard_cursors) / sizeof(standard_cursors[0]); i++) + glfwDestroyCursor(standard_cursors[i]); + + glfwTerminate(); + exit(EXIT_SUCCESS); +} + -- cgit v1.2.3