150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
//========================================================================
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// Window icon test program
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// Copyright (c) Camilla Löwy <elmindreda@glfw.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 program is used to test the icon feature.
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//
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//========================================================================
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#include <glad/gl.h>
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#define GLFW_INCLUDE_NONE
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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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#include <string.h>
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// a simple glfw logo
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const char* const logo[] =
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{
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"................",
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"................",
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"...0000..0......",
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"...0.....0......",
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"...0.00..0......",
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"...0..0..0......",
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"...0000..0000...",
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"................",
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"................",
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"...000..0...0...",
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"...0....0...0...",
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"...000..0.0.0...",
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"...0....0.0.0...",
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"...0....00000...",
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"................",
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"................"
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};
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const unsigned char icon_colors[5][4] =
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{
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{ 0, 0, 0, 255 }, // black
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{ 255, 0, 0, 255 }, // red
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{ 0, 255, 0, 255 }, // green
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{ 0, 0, 255, 255 }, // blue
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{ 255, 255, 255, 255 } // white
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};
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static int cur_icon_color = 0;
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static void set_icon(GLFWwindow* window, int icon_color)
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{
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int x, y;
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unsigned char pixels[16 * 16 * 4];
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unsigned char* target = pixels;
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GLFWimage img = { 16, 16, pixels };
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for (y = 0; y < img.width; y++)
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{
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for (x = 0; x < img.height; x++)
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{
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if (logo[y][x] == '0')
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memcpy(target, icon_colors[icon_color], 4);
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else
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memset(target, 0, 4);
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target += 4;
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}
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}
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glfwSetWindowIcon(window, 1, &img);
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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, GLFW_TRUE);
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break;
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case GLFW_KEY_SPACE:
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cur_icon_color = (cur_icon_color + 1) % 5;
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set_icon(window, cur_icon_color);
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break;
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case GLFW_KEY_X:
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glfwSetWindowIcon(window, 0, NULL);
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break;
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}
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}
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int main(int argc, char** argv)
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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\n");
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exit(EXIT_FAILURE);
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}
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window = glfwCreateWindow(200, 200, "Window Icon", NULL, NULL);
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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\n");
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exit(EXIT_FAILURE);
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}
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glfwMakeContextCurrent(window);
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gladLoadGL(glfwGetProcAddress);
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glfwSetKeyCallback(window, key_callback);
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set_icon(window, cur_icon_color);
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while (!glfwWindowShouldClose(window))
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{
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glClear(GL_COLOR_BUFFER_BIT);
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glfwSwapBuffers(window);
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glfwWaitEvents();
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}
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glfwDestroyWindow(window);
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glfwTerminate();
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exit(EXIT_SUCCESS);
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}
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