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089ea9af22
This adds the GLFW_SCALE_TO_MONITOR window hint for automatically resizing the content area of a window to the requested size times the monitor content scale each time it is placed on a new monitor. This only applies to windowed mode windows and includes the initial placement at window creation. This hint only has an effect on platforms where screen coordinates and pixels always map 1:1 such as Windows and X11. Platforms like macOS instead change the resolution of the framebuffer independently of the window size. Related to #676. Related to #1115.
108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
//========================================================================
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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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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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glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE);
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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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