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//========================================================================
// Window icon test program
// Copyright (c) Camilla Löwy <elmindreda@glfw.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 program is used to test the icon feature.
//
//========================================================================
#include <glad/gl.h>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// a simple glfw logo
const char* const logo[] =
{
"................",
"................",
"...0000..0......",
"...0.....0......",
"...0.00..0......",
"...0..0..0......",
"...0000..0000...",
"................",
"................",
"...000..0...0...",
"...0....0...0...",
"...000..0.0.0...",
"...0....0.0.0...",
"...0....00000...",
"................",
"................"
};
const unsigned char icon_colors[5][4] =
{
{ 0, 0, 0, 255 }, // black
{ 255, 0, 0, 255 }, // red
{ 0, 255, 0, 255 }, // green
{ 0, 0, 255, 255 }, // blue
{ 255, 255, 255, 255 } // white
};
static int cur_icon_color = 0;
static void set_icon(GLFWwindow* window, int icon_color)
{
int x, y;
unsigned char pixels[16 * 16 * 4];
unsigned char* target = pixels;
GLFWimage img = { 16, 16, pixels };
for (y = 0; y < img.width; y++)
{
for (x = 0; x < img.height; x++)
{
if (logo[y][x] == '0')
memcpy(target, icon_colors[icon_color], 4);
else
memset(target, 0, 4);
target += 4;
}
}
glfwSetWindowIcon(window, 1, &img);
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (action != GLFW_PRESS)
return;
switch (key)
{
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, GLFW_TRUE);
break;
case GLFW_KEY_SPACE:
cur_icon_color = (cur_icon_color + 1) % 5;
set_icon(window, cur_icon_color);
break;
case GLFW_KEY_X:
glfwSetWindowIcon(window, 0, NULL);
break;
}
}
int main(int argc, char** argv)
{
GLFWwindow* window;
if (!glfwInit())
{
fprintf(stderr, "Failed to initialize GLFW\n");
exit(EXIT_FAILURE);
}
window = glfwCreateWindow(200, 200, "Window Icon", NULL, NULL);
if (!window)
{
glfwTerminate();
fprintf(stderr, "Failed to open GLFW window\n");
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
gladLoadGL(glfwGetProcAddress);
glfwSetKeyCallback(window, key_callback);
set_icon(window, cur_icon_color);
while (!glfwWindowShouldClose(window))
{
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
glfwWaitEvents();
}
glfwDestroyWindow(window);
glfwTerminate();
exit(EXIT_SUCCESS);
}
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