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1//========================================================================
2// Simple multi-window example
3// Copyright (c) Camilla Löwy <[email protected]>
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#define GLAD_GL_IMPLEMENTATION
27#include <glad/gl.h>
28#define GLFW_INCLUDE_NONE
29#include <GLFW/glfw3.h>
30
31#include <stdio.h>
32#include <stdlib.h>
33
34int main(int argc, char** argv)
35{
36    int xpos, ypos, height;
37    const char* description;
38    GLFWwindow* windows[4];
39
40    if (!glfwInit())
41    {
42        glfwGetError(&description);
43        printf("Error: %s\n", description);
44        exit(EXIT_FAILURE);
45    }
46
47    glfwWindowHint(GLFW_DECORATED, GLFW_FALSE);
48
49    glfwGetMonitorWorkarea(glfwGetPrimaryMonitor(), &xpos, &ypos, NULL, &height);
50
51    for (int i = 0;  i < 4;  i++)
52    {
53        const int size = height / 5;
54        const struct
55        {
56            float r, g, b;
57        } colors[] =
58        {
59            { 0.95f, 0.32f, 0.11f },
60            { 0.50f, 0.80f, 0.16f },
61            {   0.f, 0.68f, 0.94f },
62            { 0.98f, 0.74f, 0.04f }
63        };
64
65        if (i > 0)
66            glfwWindowHint(GLFW_FOCUS_ON_SHOW, GLFW_FALSE);
67
68        glfwWindowHint(GLFW_POSITION_X, xpos + size * (1 + (i & 1)));
69        glfwWindowHint(GLFW_POSITION_Y, ypos + size * (1 + (i >> 1)));
70
71        windows[i] = glfwCreateWindow(size, size, "Multi-Window Example", NULL, NULL);
72        if (!windows[i])
73        {
74            glfwGetError(&description);
75            printf("Error: %s\n", description);
76            glfwTerminate();
77            exit(EXIT_FAILURE);
78        }
79
80        glfwSetInputMode(windows[i], GLFW_STICKY_KEYS, GLFW_TRUE);
81
82        glfwMakeContextCurrent(windows[i]);
83        gladLoadGL(glfwGetProcAddress);
84        glClearColor(colors[i].r, colors[i].g, colors[i].b, 1.f);
85    }
86
87    for (;;)
88    {
89        for (int i = 0;  i < 4;  i++)
90        {
91            glfwMakeContextCurrent(windows[i]);
92            glClear(GL_COLOR_BUFFER_BIT);
93            glfwSwapBuffers(windows[i]);
94
95            if (glfwWindowShouldClose(windows[i]) ||
96                glfwGetKey(windows[i], GLFW_KEY_ESCAPE))
97            {
98                glfwTerminate();
99                exit(EXIT_SUCCESS);
100            }
101        }
102
103        glfwWaitEvents();
104    }
105}
106
107
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