Fix screen for applications that want to manage their own glfw and not rely on nanogui #91
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,163 @@ | ||
| /* | ||
| src/example3.cpp -- C++ version of an example application that shows | ||
| how to use nanogui in an application with an already created and managed | ||
| glfw context. | ||
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| NanoGUI was developed by Wenzel Jakob <wenzel.jakob@epfl.ch>. | ||
| The widget drawing code is based on the NanoVG demo application | ||
| by Mikko Mononen. | ||
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| All rights reserved. Use of this source code is governed by a | ||
| BSD-style license that can be found in the LICENSE.txt file. | ||
| */ | ||
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| // GLFW | ||
| #include <GLFW/glfw3.h> | ||
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| #include <nanogui/nanogui.h> | ||
| #include <iostream> | ||
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| using namespace nanogui; | ||
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| enum test_enum { | ||
| Item1 = 0, | ||
| Item2, | ||
| Item3 | ||
| }; | ||
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| bool bvar = true; | ||
| int ivar = 12345678; | ||
| double dvar = 3.1415926; | ||
| float fvar = (float)dvar; | ||
| std::string strval = "A string"; | ||
| test_enum enumval = Item2; | ||
| Color colval(0.5f, 0.5f, 0.7f, 1.f); | ||
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| Screen *screen = nullptr; | ||
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| int main(int /* argc */, char ** /* argv */) { | ||
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| glfwInit(); | ||
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| glfwSetTime(0); | ||
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| glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); | ||
| glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); | ||
| glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); | ||
| glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); | ||
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| glfwWindowHint(GLFW_SAMPLES, 0); | ||
| glfwWindowHint(GLFW_RED_BITS, 8); | ||
| glfwWindowHint(GLFW_GREEN_BITS, 8); | ||
| glfwWindowHint(GLFW_BLUE_BITS, 8); | ||
| glfwWindowHint(GLFW_ALPHA_BITS, 8); | ||
| glfwWindowHint(GLFW_STENCIL_BITS, 8); | ||
| glfwWindowHint(GLFW_DEPTH_BITS, 24); | ||
| glfwWindowHint(GLFW_RESIZABLE, GL_TRUE); | ||
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| // Create a GLFWwindow object | ||
| GLFWwindow* window = glfwCreateWindow(800, 800, "example3", nullptr, nullptr); | ||
| if (window == nullptr) { | ||
| std::cout << "Failed to create GLFW window" << std::endl; | ||
| glfwTerminate(); | ||
| return -1; | ||
| } | ||
| glfwMakeContextCurrent(window); | ||
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| int width, height; | ||
| glfwGetFramebufferSize(window, &width, &height); | ||
| glViewport(0, 0, width, height); | ||
| glfwSwapInterval(0); | ||
| glfwSwapBuffers(window); | ||
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| // Create a nanogui screen and pass the glfw pointer to initialize | ||
| screen = new Screen(); | ||
| screen->initialize(window, true); | ||
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| // Create nanogui gui | ||
| bool enabled = true; | ||
| FormHelper *gui = new FormHelper(screen); | ||
| ref<Window> nanoguiWindow = gui->addWindow(Eigen::Vector2i(10, 10), "Form helper example"); | ||
| gui->addGroup("Basic types"); | ||
| gui->addVariable("bool", bvar)->setTooltip("Test tooltip."); | ||
| gui->addVariable("string", strval); | ||
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| gui->addGroup("Validating fields"); | ||
| gui->addVariable("int", ivar)->setSpinnable(true); | ||
| gui->addVariable("float", fvar)->setTooltip("Test."); | ||
| gui->addVariable("double", dvar)->setSpinnable(true); | ||
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| gui->addGroup("Complex types"); | ||
| gui->addVariable("Enumeration", enumval, enabled)->setItems({ "Item 1", "Item 2", "Item 3" }); | ||
| gui->addVariable("Color", colval); | ||
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| gui->addGroup("Other widgets"); | ||
| gui->addButton("A button", []() { std::cout << "Button pressed." << std::endl; })->setTooltip("Testing a much longer tooltip, that will wrap around to new lines multiple times.");; | ||
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| screen->setVisible(true); | ||
| screen->performLayout(); | ||
| nanoguiWindow->center(); | ||
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| glfwSetCursorPosCallback(window, | ||
| [](GLFWwindow *w, double x, double y) { | ||
| screen->cursorPosCallbackEvent(x, y); | ||
| } | ||
| ); | ||
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| glfwSetMouseButtonCallback(window, | ||
| [](GLFWwindow *w, int button, int action, int modifiers) { | ||
| screen->mouseButtonCallbackEvent(button, action, modifiers); | ||
| } | ||
| ); | ||
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| glfwSetKeyCallback(window, | ||
| [](GLFWwindow *w, int key, int scancode, int action, int mods) { | ||
| screen->keyCallbackEvent(key, scancode, action, mods); | ||
| } | ||
| ); | ||
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| glfwSetCharCallback(window, | ||
| [](GLFWwindow *w, unsigned int codepoint) { | ||
| screen->charCallbackEvent(codepoint); | ||
| } | ||
| ); | ||
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| glfwSetDropCallback(window, | ||
| [](GLFWwindow *w, int count, const char **filenames) { | ||
| screen->dropCallbackEvent(count, filenames); | ||
| } | ||
| ); | ||
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| glfwSetScrollCallback(window, | ||
| [](GLFWwindow *w, double x, double y) { | ||
| screen->scrollCallbackEvent(x, y); | ||
| } | ||
| ); | ||
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| glfwSetFramebufferSizeCallback(window, | ||
| [](GLFWwindow* w, int width, int height) { | ||
| screen->resizeCallbackEvent(width, height); | ||
| } | ||
| ); | ||
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| // Game loop | ||
| while (!glfwWindowShouldClose(window)) { | ||
| // Check if any events have been activated (key pressed, mouse moved etc.) and call corresponding response functions | ||
| glfwPollEvents(); | ||
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| glClearColor(0.2f, 0.25f, 0.3f, 1.0f); | ||
| glClear(GL_COLOR_BUFFER_BIT); | ||
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| // Draw nanogui | ||
| screen->drawContents(); | ||
| screen->drawWidgets(); | ||
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| glfwSwapBuffers(window); | ||
| } | ||
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| // Terminate GLFW, clearing any resources allocated by GLFW. | ||
| glfwTerminate(); | ||
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| return 0; | ||
| } | ||
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Super-minor: lambda function body and the following brace should be indented by another 4 spaces here and below.