1 //========================================================================
2 // Window icon test program
3 // Copyright (c) Camilla Löwy <elmindreda@glfw.org>
4 //
5 // This software is provided 'as-is', without any express or implied
6 // warranty. In no event will the authors be held liable for any damages
7 // arising from the use of this software.
8 //
9 // Permission is granted to anyone to use this software for any purpose,
10 // including commercial applications, and to alter it and redistribute it
11 // freely, subject to the following restrictions:
12 //
13 // 1. The origin of this software must not be misrepresented; you must not
14 // claim that you wrote the original software. If you use this software
15 // in a product, an acknowledgment in the product documentation would
16 // be appreciated but is not required.
17 //
18 // 2. Altered source versions must be plainly marked as such, and must not
19 // be misrepresented as being the original software.
20 //
21 // 3. This notice may not be removed or altered from any source
22 // distribution.
23 //
24 //========================================================================
25 //
26 // This program is used to test the icon feature.
27 //
28 //========================================================================
29
30 #include <glad/gl.h>
31 #include <GLFW/glfw3.h>
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36
37 // a simple glfw logo
38 const char* const logo[] =
39 {
40 "................",
41 "................",
42 "...0000..0......",
43 "...0.....0......",
44 "...0.00..0......",
45 "...0..0..0......",
46 "...0000..0000...",
47 "................",
48 "................",
49 "...000..0...0...",
50 "...0....0...0...",
51 "...000..0.0.0...",
52 "...0....0.0.0...",
53 "...0....00000...",
54 "................",
55 "................"
56 };
57
58 const unsigned char icon_colors[5][4] =
59 {
60 { 0, 0, 0, 255 }, // black
61 { 255, 0, 0, 255 }, // red
62 { 0, 255, 0, 255 }, // green
63 { 0, 0, 255, 255 }, // blue
64 { 255, 255, 255, 255 } // white
65 };
66
67 static int cur_icon_color = 0;
68
set_icon(GLFWwindow * window,int icon_color)69 static void set_icon(GLFWwindow* window, int icon_color)
70 {
71 int x, y;
72 unsigned char pixels[16 * 16 * 4];
73 unsigned char* target = pixels;
74 GLFWimage img = { 16, 16, pixels };
75
76 for (y = 0; y < img.width; y++)
77 {
78 for (x = 0; x < img.height; x++)
79 {
80 if (logo[y][x] == '0')
81 memcpy(target, icon_colors[icon_color], 4);
82 else
83 memset(target, 0, 4);
84
85 target += 4;
86 }
87 }
88
89 glfwSetWindowIcon(window, 1, &img);
90 }
91
key_callback(GLFWwindow * window,int key,int scancode,int action,int mods)92 static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
93 {
94 if (action != GLFW_PRESS)
95 return;
96
97 switch (key)
98 {
99 case GLFW_KEY_ESCAPE:
100 glfwSetWindowShouldClose(window, GLFW_TRUE);
101 break;
102 case GLFW_KEY_SPACE:
103 cur_icon_color = (cur_icon_color + 1) % 5;
104 set_icon(window, cur_icon_color);
105 break;
106 case GLFW_KEY_X:
107 glfwSetWindowIcon(window, 0, NULL);
108 break;
109 }
110 }
111
main(int argc,char ** argv)112 int main(int argc, char** argv)
113 {
114 GLFWwindow* window;
115
116 if (!glfwInit())
117 {
118 fprintf(stderr, "Failed to initialize GLFW\n");
119 exit(EXIT_FAILURE);
120 }
121
122 window = glfwCreateWindow(200, 200, "Window Icon", NULL, NULL);
123 if (!window)
124 {
125 glfwTerminate();
126
127 fprintf(stderr, "Failed to open GLFW window\n");
128 exit(EXIT_FAILURE);
129 }
130
131 glfwMakeContextCurrent(window);
132 gladLoadGL(glfwGetProcAddress);
133
134 glfwSetKeyCallback(window, key_callback);
135 set_icon(window, cur_icon_color);
136
137 while (!glfwWindowShouldClose(window))
138 {
139 glClear(GL_COLOR_BUFFER_BIT);
140 glfwSwapBuffers(window);
141 glfwWaitEvents();
142 }
143
144 glfwDestroyWindow(window);
145 glfwTerminate();
146 exit(EXIT_SUCCESS);
147 }
148
149