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[fonts] Example class comments

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SpaiR committed 2020-02-10 22:03:36 +03:00
1 parent 01b7bec5b2
commit c8931af336
1 file changed
+48 -32
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imgui-lwjgl3/src/test/java/ImGuiGlfwExample.java
+48 -32
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@@ -11,7 +11,6 @@ import imgui.enums.ImGuiConfigFlags;
import imgui.enums.ImGuiInputTextFlags;
import imgui.enums.ImGuiKey;
import imgui.enums.ImGuiMouseCursor;
import imgui.enums.ImGuiWindowFlags;
import imgui.gl3.ImGuiImplGl3;
import org.lwjgl.glfw.GLFWErrorCallback;
import org.lwjgl.glfw.GLFWVidMode;
@@ -47,16 +46,16 @@ public final class ImGuiGlfwExample {
// Mouse cursors provided by GLFW
private final long[] mouseCursors = new long[ImGuiMouseCursor.COUNT];
// LWJGL3 rendered itself (SHOULD be initialized)
private final ImGuiImplGl3 imGuiGl3 = new ImGuiImplGl3();
// Local app variables go here
private final String imguiDemoLink = "https://raw.githubusercontent.com/ocornut/imgui/v1.74/imgui_demo.cpp";
private final byte[] testPayload = "Test Payload".getBytes();
// Local variables for application goes here
private final String imguiDemoLink = "https://raw.githubusercontent.com/ocornut/imgui/v1.74/imgui_demo.cpp"; // Link to put into clipboard
private final byte[] testPayload = "Test Payload".getBytes(); // Test data for payload. Should be represented as raw byt array.
private String dropTargetText = "Drop Here";
private float[] backgroundColor = new float[]{0.5f, 0, 0};
private float[] backgroundColor = new float[]{0.5f, 0, 0}; // To modify background color dynamically
private int clickCount = 0;
private final ImString resizableStr = new ImString(5);
private final ImBool showDemoWindow = new ImBool();
public void run() {
@@ -67,7 +66,7 @@ public final class ImGuiGlfwExample {
destroyGlfw();
}
// Method initializes GLFW window. All code is mostly a copy-paste from the official LWJGL3 website.
// Method initializes GLFW window. All code is mostly a copy-paste from the official LWJGL3 "Get Started": https://www.lwjgl.org/guide
private void initGlfw() {
// Setup an error callback. The default implementation
// will print the error message in System.err.
@@ -85,7 +84,7 @@ public final class ImGuiGlfwExample {
glfwWindowHint(GLFW_MAXIMIZED, GLFW_TRUE); // the window will be maximized
// Create the window
window = glfwCreateWindow(DEFAULT_WIDTH, DEFAULT_HEIGHT, "ImGui+GLFW+LWJGL Example", NULL, NULL);
window = glfwCreateWindow(DEFAULT_WIDTH, DEFAULT_HEIGHT, "Dear ImGui + GLFW + LWJGL Example", NULL, NULL);
if (window == NULL) {
throw new RuntimeException("Failed to create the GLFW window");
@@ -125,19 +124,18 @@ public final class ImGuiGlfwExample {
// This line is critical for Dear ImGui to work.
ImGui.createContext();
// ImGui provides three different color schemas for styling. We will use the classic one here.
// ImGui provides 3 different color schemas for styling. We will use the classic one here.
// Try others with ImGui.styleColors*() methods.
ImGui.styleColorsClassic();
// ImGui.StyleColorsDark(); // This is a default style for ImGui
// ImGui.StyleColorsLight();
// Initialize ImGuiIO config
final ImGuiIO io = ImGui.getIO();
io.setIniFilename(null);
io.setConfigFlags(ImGuiConfigFlags.NavEnableKeyboard);
io.setBackendFlags(ImGuiBackendFlags.HasMouseCursors);
io.setBackendPlatformName("imgui_java_impl_glfw");
io.setBackendRendererName("imgui_java_impl_lwjgl");
io.setIniFilename(null); // We don't want to save .ini file
io.setConfigFlags(ImGuiConfigFlags.NavEnableKeyboard); // Navigation with keyboard
io.setBackendFlags(ImGuiBackendFlags.HasMouseCursors); // Mouse cursors to display while resizing windows etc.
io.setBackendPlatformName("imgui_java_impl_glfw"); // For debug purpose
io.setBackendRendererName("imgui_java_impl_lwjgl"); // For debug purpose
// Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array.
final int[] keyMap = new int[ImGuiKey.COUNT];
@@ -175,7 +173,9 @@ public final class ImGuiGlfwExample {
mouseCursors[ImGuiMouseCursor.ResizeNWSE] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
mouseCursors[ImGuiMouseCursor.Hand] = glfwCreateStandardCursor(GLFW_HAND_CURSOR);
// Here goes GLFW callbacks to update user input stuff in ImGui
// ------------------------------------------------------------
// Here goes GLFW callbacks to update user input in Dear ImGui
glfwSetKeyCallback(window, (w, key, scancode, action, mods) -> {
if (action == GLFW_PRESS) {
io.setKeysDown(key, true);
@@ -237,6 +237,7 @@ public final class ImGuiGlfwExample {
imGuiGl3.init();
}
// Main application loop
private void loop() {
double time = 0; // to track our frame delta value
@@ -247,8 +248,9 @@ public final class ImGuiGlfwExample {
final double deltaTime = (time > 0) ? (currentTime - time) : 1f / 60f;
time = currentTime;
// Set the clear color
// Set the clear color and do clear itself
glClearColor(backgroundColor[0], backgroundColor[1], backgroundColor[2], 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
// Get window size properties and mouse position
glfwGetWindowSize(window, winWidth, winHeight);
@@ -268,16 +270,13 @@ public final class ImGuiGlfwExample {
glfwSetCursor(window, mouseCursors[imguiCursor]);
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
// Clear the framebuffer
glClear(GL_COLOR_BUFFER_BIT);
// IMPORTANT!!
// Any ImGui code SHOULD go between NewFrame()/Render() methods
// Any Dear ImGui code SHOULD go between NewFrame()/Render() methods
ImGui.newFrame();
showUi(); // ImGui calls goes here
showUi();
ImGui.render();
// After ImGui#render call we provide draw data into LWJGL3 render.
// After ImGui#render call we provide draw data into LWJGL3 renderer.
// At that moment ImGui will be rendered to the current OpenGL context.
imGuiGl3.render(ImGui.getDrawData());
@@ -292,9 +291,14 @@ public final class ImGuiGlfwExample {
ImGui.setNextWindowSize(600, 300, ImGuiCond.Once);
ImGui.setNextWindowPos(10, 10, ImGuiCond.Once);
ImGui.begin("Custom window", ImGuiWindowFlags.NoDecoration); // Start Custom window
ImGui.text("Hello from Java!");
ImGui.begin("Custom window"); // Start Custom window
// Simple text label
ImGui.checkbox("Show demo window", showDemoWindow);
ImGui.separator();
// Drag'n'Drop functionality
ImGui.button("Drag me");
if (ImGui.beginDragDropSource()) {
ImGui.setDragDropPayload("payload_type", testPayload, testPayload.length);
@@ -311,11 +315,13 @@ public final class ImGuiGlfwExample {
ImGui.endDragDropTarget();
}
// Color picker
ImGui.alignTextToFramePadding();
ImGui.text("Background color:");
ImGui.sameLine();
ImGui.colorEdit3("##click_counter_col", backgroundColor, ImGuiColorEditFlags.NoInputs | ImGuiColorEditFlags.NoDragDrop);
// Simple click counter
if (ImGui.button("Click")) {
clickCount++;
}
@@ -324,14 +330,24 @@ public final class ImGuiGlfwExample {
}
ImGui.sameLine();
ImGui.text("Count: " + clickCount);
ImGui.checkbox("Show demo window", showDemoWindow);
ImGui.newLine();
ImGui.inputText("Resizable input", resizableStr, ImGuiInputTextFlags.CallbackResize);
ImGui.text(String.format("text len: %d | buffer size: %d", resizableStr.getLength(), resizableStr.getBufferSize()));
ImGui.newLine();
ImGui.separator();
// Input field with auto-resize ability
ImGui.text("You can use text inputs with auto-resizable strings!");
ImGui.inputText("Resizable input", resizableStr, ImGuiInputTextFlags.CallbackResize);
ImGui.text("text len:");
ImGui.sameLine();
ImGui.textColored(.12f, .6f, 1, 1, Integer.toString(resizableStr.getLength()));
ImGui.sameLine();
ImGui.text("| buffer size:");
ImGui.sameLine();
ImGui.textColored(1, .6f, 0, 1, Integer.toString(resizableStr.getBufferSize()));
ImGui.separator();
ImGui.newLine();
// Link to the original demo file
ImGui.text("Consider to look the original ImGui demo: ");
ImGui.setNextItemWidth(500);
ImGui.textColored(0, .8f, 0, 1, imguiDemoLink);