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106 lines
3.1 KiB
106 lines
3.1 KiB
//======================================================================== |
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// Window opacity test program |
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// Copyright (c) Camilla Löwy <elmindreda@glfw.org> |
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// |
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// This software is provided 'as-is', without any express or implied |
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// warranty. In no event will the authors be held liable for any damages |
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// arising from the use of this software. |
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// |
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// Permission is granted to anyone to use this software for any purpose, |
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// including commercial applications, and to alter it and redistribute it |
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// freely, subject to the following restrictions: |
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// |
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// 1. The origin of this software must not be misrepresented; you must not |
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// claim that you wrote the original software. If you use this software |
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// in a product, an acknowledgment in the product documentation would |
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// be appreciated but is not required. |
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// |
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// 2. Altered source versions must be plainly marked as such, and must not |
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// be misrepresented as being the original software. |
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// |
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// 3. This notice may not be removed or altered from any source |
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// distribution. |
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// |
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//======================================================================== |
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#include <glad/glad.h> |
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#include <GLFW/glfw3.h> |
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#define NK_IMPLEMENTATION |
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#define NK_INCLUDE_FIXED_TYPES |
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#define NK_INCLUDE_FONT_BAKING |
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#define NK_INCLUDE_DEFAULT_FONT |
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#define NK_INCLUDE_DEFAULT_ALLOCATOR |
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#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT |
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#define NK_INCLUDE_STANDARD_VARARGS |
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#include <nuklear.h> |
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#define NK_GLFW_GL2_IMPLEMENTATION |
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#include <nuklear_glfw_gl2.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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static void error_callback(int error, const char* description) |
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{ |
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fprintf(stderr, "Error: %s\n", description); |
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} |
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int main(int argc, char** argv) |
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{ |
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GLFWmonitor* monitor = NULL; |
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GLFWwindow* window; |
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struct nk_context* nk; |
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struct nk_font_atlas* atlas; |
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glfwSetErrorCallback(error_callback); |
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if (!glfwInit()) |
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exit(EXIT_FAILURE); |
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window = glfwCreateWindow(400, 400, "Opacity", NULL, NULL); |
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if (!window) |
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{ |
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glfwTerminate(); |
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exit(EXIT_FAILURE); |
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} |
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glfwMakeContextCurrent(window); |
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gladLoadGLLoader((GLADloadproc) glfwGetProcAddress); |
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glfwSwapInterval(1); |
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nk = nk_glfw3_init(window, NK_GLFW3_INSTALL_CALLBACKS); |
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nk_glfw3_font_stash_begin(&atlas); |
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nk_glfw3_font_stash_end(); |
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while (!glfwWindowShouldClose(window)) |
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{ |
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int width, height; |
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struct nk_rect area; |
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glfwGetWindowSize(window, &width, &height); |
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area = nk_rect(0.f, 0.f, (float) width, (float) height); |
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glClear(GL_COLOR_BUFFER_BIT); |
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nk_glfw3_new_frame(); |
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if (nk_begin(nk, "", area, 0)) |
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{ |
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float opacity = glfwGetWindowOpacity(window); |
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nk_layout_row_dynamic(nk, 30, 2); |
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if (nk_slider_float(nk, 0.f, &opacity, 1.f, 0.001f)) |
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glfwSetWindowOpacity(window, opacity); |
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nk_labelf(nk, NK_TEXT_LEFT, "%0.3f", opacity); |
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} |
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nk_end(nk); |
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nk_glfw3_render(NK_ANTI_ALIASING_ON); |
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glfwSwapBuffers(window); |
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glfwWaitEventsTimeout(1.0); |
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} |
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nk_glfw3_shutdown(); |
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glfwTerminate(); |
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exit(EXIT_SUCCESS); |
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} |
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