text:
//========================================================================
// Iconify/restore test program
// Copyright (c) Camilla Berglund <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 iconify/restore functionality for
// both full screen and windowed mode windows
//
//========================================================================

#include <glad/glad.h>
#include <GLFW/glfw3.h>

#include <stdio.h>
#include <stdlib.h>

#include "getopt.h"

static int windowed_xpos, windowed_ypos, windowed_width, windowed_height;

static void usage(void)
{
    printf("Usage: iconify [-h] [-f [-a] [-n]]\n");
    printf("Options:\n");
    printf("  -a create windows for all monitors\n");
    printf("  -f create full screen window(s)\n");
    printf("  -h show this help\n");
    printf("  -n no automatic iconification of full screen windows\n");
}

static void error_callback(int error, const char* description)
{
    fprintf(stderr, "Error: %s\n", description);
}

static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
    printf("%0.2f Key %s\n",
           glfwGetTime(),
           action == GLFW_PRESS ? "pressed" : "released");

    if (action != GLFW_PRESS)
        return;

    switch (key)
    {
        case GLFW_KEY_I:
            glfwIconifyWindow(window);
            break;
        case GLFW_KEY_M:
            glfwMaximizeWindow(window);
            break;
        case GLFW_KEY_R:
            glfwRestoreWindow(window);
            break;
        case GLFW_KEY_ESCAPE:
            glfwSetWindowShouldClose(window, GLFW_TRUE);
            break;
        case GLFW_KEY_F11:
        case GLFW_KEY_ENTER:
        {
            if (mods != GLFW_MOD_ALT)
                return;

            if (glfwGetWindowMonitor(window))
            {
                glfwSetWindowMonitor(window, NULL,
                                     windowed_xpos, windowed_ypos,
                                     windowed_width, windowed_height,
                                     0);
            }
            else
            {
                GLFWmonitor* monitor = glfwGetPrimaryMonitor();
                if (monitor)
                {
                    const GLFWvidmode* mode = glfwGetVideoMode(monitor);
                    glfwGetWindowPos(window, &windowed_xpos, &windowed_ypos);
                    glfwGetWindowSize(window, &windowed_width, &windowed_height);
                    glfwSetWindowMonitor(window, monitor,
                                         0, 0, mode->width, mode->height,
                                         mode->refreshRate);
                }
            }

            break;
        }
    }
}

static void window_size_callback(GLFWwindow* window, int width, int height)
{
    printf("%0.2f Window resized to %ix%i\n", glfwGetTime(), width, height);
}

static void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
    printf("%0.2f Framebuffer resized to %ix%i\n", glfwGetTime(), width, height);

    glViewport(0, 0, width, height);
}

static void window_focus_callback(GLFWwindow* window, int focused)
{
    printf("%0.2f Window %s\n",
           glfwGetTime(),
           focused ? "focused" : "defocused");
}

static void window_iconify_callback(GLFWwindow* window, int iconified)
{
    printf("%0.2f Window %s\n",
           glfwGetTime(),
           iconified ? "iconified" : "restored");
}

static void window_refresh_callback(GLFWwindow* window)
{
    int width, height;

    printf("%0.2f Window refresh\n", glfwGetTime());

    glfwGetFramebufferSize(window, &width, &height);

    glfwMakeContextCurrent(window);

    glEnable(GL_SCISSOR_TEST);

    glScissor(0, 0, width, height);
    glClearColor(0, 0, 0, 0);
    glClear(GL_COLOR_BUFFER_BIT);

    glScissor(0, 0, 640, 480);
    glClearColor(1, 1, 1, 0);
    glClear(GL_COLOR_BUFFER_BIT);

    glfwSwapBuffers(window);
}

static GLFWwindow* create_window(GLFWmonitor* monitor)
{
    int width, height;
    GLFWwindow* window;

    if (monitor)
    {
        const GLFWvidmode* mode = glfwGetVideoMode(monitor);

        glfwWindowHint(GLFW_REFRESH_RATE, mode->refreshRate);
        glfwWindowHint(GLFW_RED_BITS, mode->redBits);
        glfwWindowHint(GLFW_GREEN_BITS, mode->greenBits);
        glfwWindowHint(GLFW_BLUE_BITS, mode->blueBits);

        width = mode->width;
        height = mode->height;
    }
    else
    {
        width = 640;
        height = 480;
    }

    window = glfwCreateWindow(width, height, "Iconify", monitor, NULL);
    if (!window)
    {
        glfwTerminate();
        exit(EXIT_FAILURE);
    }

    glfwMakeContextCurrent(window);
    gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);

    return window;
}

int main(int argc, char** argv)
{
    int ch, i, window_count;
    int auto_iconify = GLFW_TRUE, fullscreen = GLFW_FALSE, all_monitors = GLFW_FALSE;
    GLFWwindow** windows;

    while ((ch = getopt(argc, argv, "afhn")) != -1)
    {
        switch (ch)
        {
            case 'a':
                all_monitors = GLFW_TRUE;
                break;

            case 'h':
                usage();
                exit(EXIT_SUCCESS);

            case 'f':
                fullscreen = GLFW_TRUE;
                break;

            case 'n':
                auto_iconify = GLFW_FALSE;
                break;

            default:
                usage();
                exit(EXIT_FAILURE);
        }
    }

    glfwSetErrorCallback(error_callback);

    if (!glfwInit())
        exit(EXIT_FAILURE);

    glfwWindowHint(GLFW_AUTO_ICONIFY, auto_iconify);

    if (fullscreen && all_monitors)
    {
        int monitor_count;
        GLFWmonitor** monitors = glfwGetMonitors(&monitor_count);

        window_count = monitor_count;
        windows = calloc(window_count, sizeof(GLFWwindow*));

        for (i = 0;  i < monitor_count;  i++)
        {
            windows[i] = create_window(monitors[i]);
            if (!windows[i])
                break;
        }
    }
    else
    {
        GLFWmonitor* monitor = NULL;

        if (fullscreen)
            monitor = glfwGetPrimaryMonitor();

        window_count = 1;
        windows = calloc(window_count, sizeof(GLFWwindow*));
        windows[0] = create_window(monitor);
    }

    for (i = 0;  i < window_count;  i++)
    {
        glfwSetKeyCallback(windows[i], key_callback);
        glfwSetFramebufferSizeCallback(windows[i], framebuffer_size_callback);
        glfwSetWindowSizeCallback(windows[i], window_size_callback);
        glfwSetWindowFocusCallback(windows[i], window_focus_callback);
        glfwSetWindowIconifyCallback(windows[i], window_iconify_callback);
        glfwSetWindowRefreshCallback(windows[i], window_refresh_callback);

        window_refresh_callback(windows[i]);

        printf("Window is %s and %s\n",
            glfwGetWindowAttrib(windows[i], GLFW_ICONIFIED) ? "iconified" : "restored",
            glfwGetWindowAttrib(windows[i], GLFW_FOCUSED) ? "focused" : "defocused");
    }

    for (;;)
    {
        glfwWaitEvents();

        for (i = 0;  i < window_count;  i++)
        {
            if (glfwWindowShouldClose(windows[i]))
                break;
        }

        if (i < window_count)
            break;

        // Workaround for an issue with msvcrt and mintty
        fflush(stdout);
    }

    glfwTerminate();
    exit(EXIT_SUCCESS);
}


text:
//========================================================================
// Vsync enabling test
// Copyright (c) Camilla Berglund <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 test renders a high contrast, horizontally moving bar, allowing for
// visual verification of whether the set swap interval is indeed obeyed
//
//========================================================================

#include <glad/glad.h>
#include <GLFW/glfw3.h>

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#include "getopt.h"

static int swap_tear;
static int swap_interval;
static double frame_rate;

static void usage(void)
{
    printf("Usage: tearing [-h] [-f]\n");
    printf("Options:\n");
    printf("  -f create full screen window\n");
    printf("  -h show this help\n");
}

static void update_window_title(GLFWwindow* window)
{
    char title[256];

    sprintf(title, "Tearing detector (interval %i%s, %0.1f Hz)",
            swap_interval,
            (swap_tear && swap_interval < 0) ? " (swap tear)" : "",
            frame_rate);

    glfwSetWindowTitle(window, title);
}

static void set_swap_interval(GLFWwindow* window, int interval)
{
    swap_interval = interval;
    glfwSwapInterval(swap_interval);
    update_window_title(window);
}

static void error_callback(int error, const char* description)
{
    fprintf(stderr, "Error: %s\n", description);
}

static void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
    glViewport(0, 0, width, height);
}

static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
    if (action != GLFW_PRESS)
        return;

    switch (key)
    {
        case GLFW_KEY_UP:
        {
            if (swap_interval + 1 > swap_interval)
                set_swap_interval(window, swap_interval + 1);
            break;
        }

        case GLFW_KEY_DOWN:
        {
            if (swap_tear)
            {
                if (swap_interval - 1 < swap_interval)
                    set_swap_interval(window, swap_interval - 1);
            }
            else
            {
                if (swap_interval - 1 >= 0)
                    set_swap_interval(window, swap_interval - 1);
            }
            break;
        }

        case GLFW_KEY_ESCAPE:
            glfwSetWindowShouldClose(window, 1);
            break;
    }
}

int main(int argc, char** argv)
{
    int ch, width, height;
    float position;
    unsigned long frame_count = 0;
    double last_time, current_time;
    int fullscreen = GLFW_FALSE;
    GLFWmonitor* monitor = NULL;
    GLFWwindow* window;

    while ((ch = getopt(argc, argv, "fh")) != -1)
    {
        switch (ch)
        {
            case 'h':
                usage();
                exit(EXIT_SUCCESS);

            case 'f':
                fullscreen = GLFW_TRUE;
                break;
        }
    }

    glfwSetErrorCallback(error_callback);

    if (!glfwInit())
        exit(EXIT_FAILURE);

    if (fullscreen)
    {
        const GLFWvidmode* mode;

        monitor = glfwGetPrimaryMonitor();
        mode = glfwGetVideoMode(monitor);

        glfwWindowHint(GLFW_RED_BITS, mode->redBits);
        glfwWindowHint(GLFW_GREEN_BITS, mode->greenBits);
        glfwWindowHint(GLFW_BLUE_BITS, mode->blueBits);
        glfwWindowHint(GLFW_REFRESH_RATE, mode->refreshRate);

        width = mode->width;
        height = mode->height;
    }
    else
    {
        width = 640;
        height = 480;
    }

    window = glfwCreateWindow(width, height, "", monitor, NULL);
    if (!window)
    {
        glfwTerminate();
        exit(EXIT_FAILURE);
    }

    glfwMakeContextCurrent(window);
    gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);
    set_swap_interval(window, 0);

    last_time = glfwGetTime();
    frame_rate = 0.0;
    swap_tear = (glfwExtensionSupported("WGL_EXT_swap_control_tear") ||
                 glfwExtensionSupported("GLX_EXT_swap_control_tear"));

    glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
    glfwSetKeyCallback(window, key_callback);

    glMatrixMode(GL_PROJECTION);
    glOrtho(-1.f, 1.f, -1.f, 1.f, 1.f, -1.f);
    glMatrixMode(GL_MODELVIEW);

    while (!glfwWindowShouldClose(window))
    {
        glClear(GL_COLOR_BUFFER_BIT);

        position = cosf((float) glfwGetTime() * 4.f) * 0.75f;
        glRectf(position - 0.25f, -1.f, position + 0.25f, 1.f);

        glfwSwapBuffers(window);
        glfwPollEvents();

        frame_count++;

        current_time = glfwGetTime();
        if (current_time - last_time > 1.0)
        {
            frame_rate = frame_count / (current_time - last_time);
            frame_count = 0;
            last_time = current_time;
            update_window_title(window);
        }
    }

    glfwTerminate();
    exit(EXIT_SUCCESS);
}

repo_language: C

mime_type: text/x-c


text:
//========================================================================
// Simple multi-window test
// Copyright (c) Camilla Berglund <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 test creates four windows and clears each in a different color
//
//========================================================================

#include <glad/glad.h>
#include <GLFW/glfw3.h>

#include <stdio.h>
#include <stdlib.h>

#include "getopt.h"

static const char* titles[] =
{
    "Red",
    "Green",
    "Blue",
    "Yellow"
};

static const struct
{
    float r, g, b;
} colors[] =
{
    { 0.95f, 0.32f, 0.11f },
    { 0.50f, 0.80f, 0.16f },
    {   0.f, 0.68f, 0.94f },
    { 0.98f, 0.74f, 0.04f }
};

static void usage(void)
{
    printf("Usage: windows [-h] [-b]\n");
    printf("Options:\n");
    printf("  -b create decorated windows\n");
    printf("  -h show this help\n");
}

static void error_callback(int error, const char* description)
{
    fprintf(stderr, "Error: %s\n", description);
}

static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
    if (action != GLFW_PRESS)
        return;

    switch (key)
    {
        case GLFW_KEY_SPACE:
        {
            int xpos, ypos;
            glfwGetWindowPos(window, &xpos, &ypos);
            glfwSetWindowPos(window, xpos, ypos);
            break;
        }

        case GLFW_KEY_ESCAPE:
            glfwSetWindowShouldClose(window, GLFW_TRUE);
            break;
    }
}

int main(int argc, char** argv)
{
    int i, ch;
    int decorated = GLFW_FALSE;
    int running = GLFW_TRUE;
    GLFWwindow* windows[4];

    while ((ch = getopt(argc, argv, "bh")) != -1)
    {
        switch (ch)
        {
            case 'b':
                decorated = GLFW_TRUE;
                break;
            case 'h':
                usage();
                exit(EXIT_SUCCESS);
            default:
                usage();
                exit(EXIT_FAILURE);
        }
    }

    glfwSetErrorCallback(error_callback);

    if (!glfwInit())
        exit(EXIT_FAILURE);

    glfwWindowHint(GLFW_DECORATED, decorated);
    glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);

    for (i = 0;  i < 4;  i++)
    {
        int left, top, right, bottom;

        windows[i] = glfwCreateWindow(200, 200, titles[i], NULL, NULL);
        if (!windows[i])
        {
            glfwTerminate();
            exit(EXIT_FAILURE);
        }

        glfwSetKeyCallback(windows[i], key_callback);

        glfwMakeContextCurrent(windows[i]);
        gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);
        glClearColor(colors[i].r, colors[i].g, colors[i].b, 1.f);

        glfwGetWindowFrameSize(windows[i], &left, &top, &right, &bottom);
        glfwSetWindowPos(windows[i],
                         100 + (i & 1) * (200 + left + right),
                         100 + (i >> 1) * (200 + top + bottom));
    }

    for (i = 0;  i < 4;  i++)
        glfwShowWindow(windows[i]);

    while (running)
    {
        for (i = 0;  i < 4;  i++)
        {
            glfwMakeContextCurrent(windows[i]);
            glClear(GL_COLOR_BUFFER_BIT);
            glfwSwapBuffers(windows[i]);

            if (glfwWindowShouldClose(windows[i]))
                running = GLFW_FALSE;
        }

        glfwWaitEvents();
    }

    glfwTerminate();
    exit(EXIT_SUCCESS);
}


text:
//========================================================================
// Window icon test program
// Copyright (c) Camilla Berglund <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/glad.h>
#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);
    gladLoadGLLoader((GLADloadproc) 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);
}