You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
109 lines
3.1 KiB
109 lines
3.1 KiB
//======================================================================== |
|
// Window opacity test program |
|
// Copyright (c) Camilla Löwy <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. |
|
// |
|
//======================================================================== |
|
|
|
#include <glad/gl.h> |
|
#define GLFW_INCLUDE_NONE |
|
#include <GLFW/glfw3.h> |
|
|
|
#define NK_IMPLEMENTATION |
|
#define NK_INCLUDE_FIXED_TYPES |
|
#define NK_INCLUDE_FONT_BAKING |
|
#define NK_INCLUDE_DEFAULT_FONT |
|
#define NK_INCLUDE_DEFAULT_ALLOCATOR |
|
#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT |
|
#define NK_INCLUDE_STANDARD_VARARGS |
|
#include <nuklear.h> |
|
|
|
#define NK_GLFW_GL2_IMPLEMENTATION |
|
#include <nuklear_glfw_gl2.h> |
|
|
|
#include <stdio.h> |
|
#include <stdlib.h> |
|
|
|
static void error_callback(int error, const char* description) |
|
{ |
|
fprintf(stderr, "Error: %s\n", description); |
|
} |
|
|
|
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); |
|
glfwWindowHint(GLFW_WIN32_KEYBOARD_MENU, 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); |
|
} |
|
|
|
|