Ejemplo n.º 1
0
int main(int argc, char** argv)
{
    GLFWwindow* window;
    struct nk_context* nk;
    struct nk_font_atlas* atlas;

    glfwSetErrorCallback(error_callback);

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

    glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE);

    window = glfwCreateWindow(400, 400, "Opacity", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        exit(EXIT_FAILURE);
    }

    glfwMakeContextCurrent(window);
    gladLoadGL(glfwGetProcAddress);
    glfwSwapInterval(1);

    nk = nk_glfw3_init(window, NK_GLFW3_INSTALL_CALLBACKS);
    nk_glfw3_font_stash_begin(&atlas);
    nk_glfw3_font_stash_end();

    while (!glfwWindowShouldClose(window))
    {
        int width, height;
        struct nk_rect area;

        glfwGetWindowSize(window, &width, &height);
        area = nk_rect(0.f, 0.f, (float) width, (float) height);

        glClear(GL_COLOR_BUFFER_BIT);
        nk_glfw3_new_frame();
        if (nk_begin(nk, "", area, 0))
        {
            float opacity = glfwGetWindowOpacity(window);
            nk_layout_row_dynamic(nk, 30, 2);
            if (nk_slider_float(nk, 0.f, &opacity, 1.f, 0.001f))
                glfwSetWindowOpacity(window, opacity);
            nk_labelf(nk, NK_TEXT_LEFT, "%0.3f", opacity);
        }

        nk_end(nk);
        nk_glfw3_render(NK_ANTI_ALIASING_ON);

        glfwSwapBuffers(window);
        glfwWaitEventsTimeout(1.0);
    }

    nk_glfw3_shutdown();
    glfwTerminate();
    exit(EXIT_SUCCESS);
}
Ejemplo n.º 2
0
Archivo: timeout.c Proyecto: glfw/glfw
int main(void)
{
    GLFWwindow* window;

    srand((unsigned int) time(NULL));

    glfwSetErrorCallback(error_callback);

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

    window = glfwCreateWindow(640, 480, "Event Wait Timeout Test", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        exit(EXIT_FAILURE);
    }

    glfwMakeContextCurrent(window);
    gladLoadGL(glfwGetProcAddress);
    glfwSetKeyCallback(window, key_callback);

    while (!glfwWindowShouldClose(window))
    {
        int width, height;
        float r = nrand(), g = nrand(), b = nrand();
        float l = (float) sqrt(r * r + g * g + b * b);

        glfwGetFramebufferSize(window, &width, &height);

        glViewport(0, 0, width, height);
        glClearColor(r / l, g / l, b / l, 1.f);
        glClear(GL_COLOR_BUFFER_BIT);
        glfwSwapBuffers(window);

        glfwWaitEventsTimeout(1.0);
    }

    glfwDestroyWindow(window);

    glfwTerminate();
    exit(EXIT_SUCCESS);
}
Ejemplo n.º 3
0
int main(void)
{
    int i;
    GLFWwindow* window;
    GLFWcursor* star_cursors[CURSOR_FRAME_COUNT];
    GLFWcursor* current_frame = NULL;

    glfwSetErrorCallback(error_callback);

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

    for (i = 0;  i < CURSOR_FRAME_COUNT;  i++)
    {
        star_cursors[i] = create_cursor_frame(i / (float) CURSOR_FRAME_COUNT);
        if (!star_cursors[i])
        {
            glfwTerminate();
            exit(EXIT_FAILURE);
        }
    }

    for (i = 0;  i < sizeof(standard_cursors) / sizeof(standard_cursors[0]);  i++)
    {
        const int shapes[] = {
            GLFW_ARROW_CURSOR,
            GLFW_IBEAM_CURSOR,
            GLFW_CROSSHAIR_CURSOR,
            GLFW_HAND_CURSOR,
            GLFW_HRESIZE_CURSOR,
            GLFW_VRESIZE_CURSOR
        };

        standard_cursors[i] = glfwCreateStandardCursor(shapes[i]);
        if (!standard_cursors[i])
        {
            glfwTerminate();
            exit(EXIT_FAILURE);
        }
    }

    window = glfwCreateWindow(640, 480, "Cursor Test", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        exit(EXIT_FAILURE);
    }

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

    glfwGetCursorPos(window, &cursor_x, &cursor_y);
    printf("Cursor position: %f %f\n", cursor_x, cursor_y);

    glfwSetCursorPosCallback(window, cursor_position_callback);
    glfwSetKeyCallback(window, key_callback);

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

        if (track_cursor)
        {
            int wnd_width, wnd_height, fb_width, fb_height;
            float scale;

            glfwGetWindowSize(window, &wnd_width, &wnd_height);
            glfwGetFramebufferSize(window, &fb_width, &fb_height);

            scale = (float) fb_width / (float) wnd_width;

            glViewport(0, 0, fb_width, fb_height);

            glMatrixMode(GL_PROJECTION);
            glLoadIdentity();
            glOrtho(0.f, fb_width, 0.f, fb_height, 0.f, 1.f);

            glBegin(GL_LINES);
            glVertex2f(0.f, (GLfloat) (fb_height - cursor_y * scale));
            glVertex2f((GLfloat) fb_width, (GLfloat) (fb_height - cursor_y * scale));
            glVertex2f((GLfloat) cursor_x * scale, 0.f);
            glVertex2f((GLfloat) cursor_x * scale, (GLfloat) fb_height);
            glEnd();
        }

        glfwSwapBuffers(window);

        if (animate_cursor)
        {
            const int i = (int) (glfwGetTime() * 30.0) % CURSOR_FRAME_COUNT;
            if (current_frame != star_cursors[i])
            {
                glfwSetCursor(window, star_cursors[i]);
                current_frame = star_cursors[i];
            }
        }
        else
            current_frame = NULL;

        if (wait_events)
        {
            if (animate_cursor)
                glfwWaitEventsTimeout(1.0 / 30.0);
            else
                glfwWaitEvents();
        }
        else
            glfwPollEvents();

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

    glfwDestroyWindow(window);

    for (i = 0;  i < CURSOR_FRAME_COUNT;  i++)
        glfwDestroyCursor(star_cursors[i]);

    for (i = 0;  i < sizeof(standard_cursors) / sizeof(standard_cursors[0]);  i++)
        glfwDestroyCursor(standard_cursors[i]);

    glfwTerminate();
    exit(EXIT_SUCCESS);
}
Ejemplo n.º 4
0
int main(int argc, char** argv)
{
    GLFWmonitor* monitor = NULL;
    GLFWwindow* window;
    GLFWgammaramp orig_ramp;
    struct nk_context* nk;
    struct nk_font_atlas* atlas;
    float gamma_value = 1.f;

    glfwSetErrorCallback(error_callback);

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

    monitor = glfwGetPrimaryMonitor();

    window = glfwCreateWindow(800, 400, "Gamma Test", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        exit(EXIT_FAILURE);
    }

    {
        const GLFWgammaramp* ramp = glfwGetGammaRamp(monitor);
        const size_t array_size = ramp->size * sizeof(short);
        orig_ramp.size = ramp->size;
        orig_ramp.red = malloc(array_size);
        orig_ramp.green = malloc(array_size);
        orig_ramp.blue = malloc(array_size);
        memcpy(orig_ramp.red, ramp->red, array_size);
        memcpy(orig_ramp.green, ramp->green, array_size);
        memcpy(orig_ramp.blue, ramp->blue, array_size);
    }

    glfwMakeContextCurrent(window);
    gladLoadGLLoader((GLADloadproc) glfwGetProcAddress);
    glfwSwapInterval(1);

    nk = nk_glfw3_init(window, NK_GLFW3_INSTALL_CALLBACKS);
    nk_glfw3_font_stash_begin(&atlas);
    nk_glfw3_font_stash_end();

    glfwSetKeyCallback(window, key_callback);

    while (!glfwWindowShouldClose(window))
    {
        int width, height;
        struct nk_rect area;

        glfwGetWindowSize(window, &width, &height);
        area = nk_rect(0.f, 0.f, (float) width, (float) height);
        nk_window_set_bounds(nk, "", area);

        glClear(GL_COLOR_BUFFER_BIT);
        nk_glfw3_new_frame();
        if (nk_begin(nk, "", area, 0))
        {
            const GLFWgammaramp* ramp;

            nk_layout_row_dynamic(nk, 30, 3);
            if (nk_slider_float(nk, 0.1f, &gamma_value, 5.f, 0.1f))
                glfwSetGamma(monitor, gamma_value);
            nk_labelf(nk, NK_TEXT_LEFT, "%0.1f", gamma_value);
            if (nk_button_label(nk, "Revert"))
                glfwSetGammaRamp(monitor, &orig_ramp);

            ramp = glfwGetGammaRamp(monitor);

            nk_layout_row_dynamic(nk, height - 60.f, 3);
            chart_ramp_array(nk, nk_rgb(255, 0, 0), ramp->size, ramp->red);
            chart_ramp_array(nk, nk_rgb(0, 255, 0), ramp->size, ramp->green);
            chart_ramp_array(nk, nk_rgb(0, 0, 255), ramp->size, ramp->blue);
        }

        nk_end(nk);
        nk_glfw3_render(NK_ANTI_ALIASING_ON);

        glfwSwapBuffers(window);
        glfwWaitEventsTimeout(1.0);
    }

    free(orig_ramp.red);
    free(orig_ramp.green);
    free(orig_ramp.blue);

    nk_glfw3_shutdown();
    glfwTerminate();
    exit(EXIT_SUCCESS);
}