This adds 3 functions to the GLFW API: glfwCreateCursor, glfwDestroyCursor and glfwSetCursor.master
urraka
ago%!(EXTRA string=12 years)
committed by
Camilla Berglund
parent
30f86286f5
commit
40c04a7565
14 changed files with 836 additions and 12 deletions
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//========================================================================
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// Cursor & input mode tests
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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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// System cursors and input modes tests.
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//
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//========================================================================
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#define GLFW_INCLUDE_GLU |
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#include <GLFW/glfw3.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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static int W = 640; |
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static int H = 480; |
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static int delay = 0; |
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static GLFWwindow* windows[2] = {NULL, NULL}; |
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static GLFWwindow* activeWindow = NULL; |
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static GLFWcursor* cursor = NULL; |
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static struct { int key; double time; } commands[] = { |
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{GLFW_KEY_H, 0}, |
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{GLFW_KEY_C, 0}, |
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{GLFW_KEY_D, 0}, |
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{GLFW_KEY_S, 0}, |
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{GLFW_KEY_N, 0}, |
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{GLFW_KEY_1, 0}, |
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{GLFW_KEY_2, 0}, |
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{GLFW_KEY_3, 0} |
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}; |
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static int CommandCount = sizeof(commands) / sizeof(commands[0]); |
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static struct { int w, h; } cursorSize[] = { |
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{24, 24}, {13, 37}, {5, 53}, {43, 64}, {300, 300} |
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}; |
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static int SizeCount = sizeof(cursorSize) / sizeof(cursorSize[0]); |
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static int currentSize = 0; |
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static void command_callback(int key) |
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{ |
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switch (key) |
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{ |
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case GLFW_KEY_H: |
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{ |
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printf("H: show this help\n"); |
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printf("C: call glfwCreateCursor()\n"); |
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printf("D: call glfwDestroyCursor()\n"); |
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printf("S: call glfwSetCursor()\n"); |
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printf("N: call glfwSetCursor() with NULL\n"); |
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printf("1: set GLFW_CURSOR_NORMAL\n"); |
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printf("2: set GLFW_CURSOR_HIDDEN\n"); |
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printf("3: set GLFW_CURSOR_DISABLED\n"); |
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printf("T: enable 3s delay for all previous commands\n"); |
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} |
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break; |
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case GLFW_KEY_C: |
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{ |
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if (cursor == NULL) |
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{ |
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int w = cursorSize[currentSize].w; |
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int h = cursorSize[currentSize].h; |
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int x, y, i = 0; |
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unsigned char *image = malloc(4 * w * h); |
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for (y = 0; y < h; y++) |
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{ |
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for (x = 0; x < w; x++) |
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{ |
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image[i++] = 0xFF; |
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image[i++] = 0; |
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image[i++] = 255 * y / h; |
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image[i++] = 255 * x / w; |
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} |
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} |
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cursor = glfwCreateCursor(w, h, w / 2, h / 2, 0, image); |
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currentSize = (currentSize + 1) % SizeCount; |
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free(image); |
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} |
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} |
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break; |
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case GLFW_KEY_D: |
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{ |
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if (cursor != NULL) |
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{ |
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glfwDestroyCursor(cursor); |
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cursor = NULL; |
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} |
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} |
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break; |
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case GLFW_KEY_S: |
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{ |
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if (cursor != NULL) |
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glfwSetCursor(activeWindow, cursor); |
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else |
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printf("The cursor is not created\n"); |
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} |
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break; |
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case GLFW_KEY_N: |
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{ |
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glfwSetCursor(activeWindow, NULL); |
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} |
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break; |
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case GLFW_KEY_1: |
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{ |
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glfwSetInputMode(activeWindow, GLFW_CURSOR, GLFW_CURSOR_NORMAL); |
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} |
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break; |
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case GLFW_KEY_2: |
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{ |
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glfwSetInputMode(activeWindow, GLFW_CURSOR, GLFW_CURSOR_HIDDEN); |
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} |
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break; |
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case GLFW_KEY_3: |
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{ |
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glfwSetInputMode(activeWindow, GLFW_CURSOR, GLFW_CURSOR_DISABLED); |
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} |
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break; |
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} |
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} |
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static void error_callback(int error, const char* description) |
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{ |
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fprintf(stderr, "Error: %s\n", description); |
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} |
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static void framebuffer_size_callback(GLFWwindow* window, int width, int height) |
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{ |
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W = width; |
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H = height; |
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glViewport(0, 0, W, H); |
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} |
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static void refresh_callback(GLFWwindow* window) |
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{ |
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glfwMakeContextCurrent(window); |
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glClearColor(0.0f, window == activeWindow ? 0.8f : 0.0f, 0.0f, 1.0f); |
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glClear(GL_COLOR_BUFFER_BIT); |
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glfwSwapBuffers(window); |
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} |
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static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) |
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{ |
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if (action != GLFW_PRESS) |
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return; |
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switch (key) |
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{ |
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case GLFW_KEY_ESCAPE: |
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glfwSetWindowShouldClose(window, GL_TRUE); |
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break; |
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case GLFW_KEY_T: |
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delay = !delay; |
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printf("Delay %s.\n", delay ? "enabled" : "disabled"); |
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break; |
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default: |
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{ |
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if (delay) |
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{ |
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int i = 0; |
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while (i < CommandCount && commands[i].key != key) |
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i++; |
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if (i < CommandCount) |
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commands[i].time = glfwGetTime(); |
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} |
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else |
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{ |
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command_callback(key); |
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} |
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} |
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break; |
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} |
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} |
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static void focus_callback(GLFWwindow* window, int focused) |
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{ |
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if (focused) |
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{ |
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activeWindow = window; |
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refresh_callback(windows[0]); |
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refresh_callback(windows[1]); |
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} |
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} |
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int main(void) |
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{ |
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int i; |
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GLboolean running = GL_TRUE; |
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glfwSetErrorCallback(error_callback); |
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if (!glfwInit()) |
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exit(EXIT_FAILURE); |
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for (i = 0; i < 2; i++) |
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{ |
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windows[i] = glfwCreateWindow(W, H, "Cursor testing", NULL, NULL); |
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if (!windows[i]) |
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{ |
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glfwTerminate(); |
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exit(EXIT_FAILURE); |
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} |
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glfwSetWindowPos(windows[i], 100 + (i & 1) * (W + 50), 100); |
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glfwSetWindowRefreshCallback(windows[i], refresh_callback); |
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glfwSetFramebufferSizeCallback(windows[i], framebuffer_size_callback); |
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glfwSetKeyCallback(windows[i], key_callback); |
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glfwSetWindowFocusCallback(windows[i], focus_callback); |
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glfwMakeContextCurrent(windows[i]); |
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glClear(GL_COLOR_BUFFER_BIT); |
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glfwSwapBuffers(windows[i]); |
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} |
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activeWindow = windows[0]; |
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key_callback(NULL, GLFW_KEY_H, 0, GLFW_PRESS, 0); |
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while (running) |
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{ |
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if (delay) |
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{ |
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int i; |
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double t = glfwGetTime(); |
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for (i = 0; i < CommandCount; i++) |
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{ |
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if (commands[i].time != 0 && t - commands[i].time >= 3.0) |
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{ |
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command_callback(commands[i].key); |
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commands[i].time = 0; |
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} |
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} |
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} |
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running = !(glfwWindowShouldClose(windows[0]) || glfwWindowShouldClose(windows[1])); |
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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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@ -0,0 +1,133 @@ |
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//========================================================================
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// Cursor animation
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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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// Cursor animation test.
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//
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//========================================================================
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#include <GLFW/glfw3.h> |
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#include <stdlib.h> |
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#include <math.h> |
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#ifdef min |
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#undef min |
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#endif |
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#ifdef max |
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#undef max |
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#endif |
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#define SIZE 64 // cursor size (width & height)
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#define N 60 // number of frames
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unsigned char buffer[4 * SIZE * SIZE]; |
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static float max(float a, float b) { return a > b ? a : b; } |
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static float min(float a, float b) { return a < b ? a : b; } |
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static float star(int x, int y, float t) |
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{ |
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float c = SIZE / 2.0f; |
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float i = (0.25f * (float)sin(2.0f * 3.1415926f * t) + 0.75f); |
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float k = SIZE * 0.046875f * i; |
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float dist = (float)sqrt((x - c) * (x - c) + (y - c) * (y - c)); |
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float salpha = 1.0f - dist / c; |
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float xalpha = (float)x == c ? c : k / (float)fabs(x - c); |
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float yalpha = (float)y == c ? c : k / (float)fabs(y - c); |
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return max(0.0f, min(1.0f, i * salpha * 0.2f + salpha * xalpha * yalpha)); |
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} |
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static GLFWcursor* load_frame(float t) |
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{ |
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int i = 0, x, y; |
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for (y = 0; y < SIZE; y++) |
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{ |
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for (x = 0; x < SIZE; x++) |
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{ |
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buffer[i++] = 255; |
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buffer[i++] = 255; |
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buffer[i++] = 255; |
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buffer[i++] = (unsigned char)(255 * star(x, y, t)); |
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} |
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} |
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return glfwCreateCursor(SIZE, SIZE, SIZE / 2, SIZE / 2, 0, buffer); |
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} |
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int main(void) |
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{ |
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int i; |
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double t0, t1, frameTime = 0.0; |
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GLFWwindow* window; |
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GLFWcursor* frames[N]; |
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if (!glfwInit()) |
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exit(EXIT_FAILURE); |
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window = glfwCreateWindow(640, 480, "Cursor animation", NULL, NULL); |
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if (!window) |
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{ |
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glfwTerminate(); |
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exit(EXIT_FAILURE); |
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} |
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glfwMakeContextCurrent(window); |
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glfwSwapInterval(1); |
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for (i = 0; i < N; i++) |
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frames[i] = load_frame(i / (float)N); |
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i = 0; |
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t0 = glfwGetTime(); |
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while (!glfwWindowShouldClose(window)) |
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{ |
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glClear(GL_COLOR_BUFFER_BIT); |
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glfwSetCursor(window, frames[i]); |
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glfwSwapBuffers(window); |
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glfwPollEvents(); |
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t1 = glfwGetTime(); |
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frameTime += t1 - t0; |
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t0 = t1; |
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while (frameTime > 1.0 / (double)N) |
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{ |
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i = (i + 1) % N; |
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frameTime -= 1.0 / (double)N; |
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} |
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} |
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glfwTerminate(); |
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exit(EXIT_SUCCESS); |
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} |
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