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Tweak ImGuiImplGlfw

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SpaiR committed 2020-06-28 21:28:40 +03:00
1 parent 0b478fd337
commit f5d5c18edb
2 files changed
+65 -62
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imgui-lwjgl3/src/main/java/imgui/glfw/ImGuiImplGlfw.java
+65 -59
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@@ -1,5 +1,25 @@
package imgui.glfw;
import imgui.ImGui;
import imgui.ImGuiIO;
import imgui.ImVec2;
import imgui.callback.ImStrConsumer;
import imgui.callback.ImStrSupplier;
import imgui.flag.ImGuiBackendFlags;
import imgui.flag.ImGuiConfigFlags;
import imgui.flag.ImGuiKey;
import imgui.flag.ImGuiMouseButton;
import imgui.flag.ImGuiMouseCursor;
import imgui.flag.ImGuiNavInput;
import org.lwjgl.glfw.GLFWCharCallback;
import org.lwjgl.glfw.GLFWErrorCallback;
import org.lwjgl.glfw.GLFWKeyCallback;
import org.lwjgl.glfw.GLFWMouseButtonCallback;
import org.lwjgl.glfw.GLFWScrollCallback;
import java.nio.ByteBuffer;
import java.nio.FloatBuffer;
import static org.lwjgl.glfw.GLFW.GLFW_ARROW_CURSOR;
import static org.lwjgl.glfw.GLFW.GLFW_CURSOR;
import static org.lwjgl.glfw.GLFW.GLFW_CURSOR_DISABLED;
@@ -65,37 +85,17 @@ import static org.lwjgl.glfw.GLFW.glfwSetKeyCallback;
import static org.lwjgl.glfw.GLFW.glfwSetMouseButtonCallback;
import static org.lwjgl.glfw.GLFW.glfwSetScrollCallback;
import imgui.ImGui;
import imgui.ImGuiIO;
import imgui.ImVec2;
import imgui.callback.ImStrConsumer;
import imgui.callback.ImStrSupplier;
import imgui.flag.ImGuiBackendFlags;
import imgui.flag.ImGuiConfigFlags;
import imgui.flag.ImGuiKey;
import imgui.flag.ImGuiMouseButton;
import imgui.flag.ImGuiMouseCursor;
import imgui.flag.ImGuiNavInput;
import java.nio.ByteBuffer;
import java.nio.FloatBuffer;
import org.lwjgl.glfw.GLFWCharCallback;
import org.lwjgl.glfw.GLFWErrorCallback;
import org.lwjgl.glfw.GLFWKeyCallback;
import org.lwjgl.glfw.GLFWMouseButtonCallback;
import org.lwjgl.glfw.GLFWScrollCallback;
/**
* This class is a straightforward port of the
* <a href="https://raw.githubusercontent.com/ocornut/imgui/v1.76/examples/imgui_impl_glfw.cpp">imgui_impl_glfw.cpp</a>.
* <p>
* It supports clipboard, gamepad, mouse and keyboard in the same way the original Dear ImGui code does. You can copy-paste this class in your codebase and
* modify the rendering routine in the way you'd like.
* <p>
*/
public class ImGuiImplGlfw {
// Id of the current GLFW window
private long windowId;
private long windowPtr;
// For application window properties
private final int[] winWidth = new int[1];
@@ -106,8 +106,12 @@ public class ImGuiImplGlfw {
// Mouse cursors provided by GLFW
private final long[] mouseCursors = new long[ImGuiMouseCursor.COUNT];
// Empty array to fill ImGuiIO.NavInputs with zeroes
private final float[] emptyNavInputs = new float[ImGuiNavInput.COUNT];
// For mouse tracking
private final boolean[] mouseJustPressed = new boolean[ImGuiMouseButton.COUNT];
private final ImVec2 mousePosBackup = new ImVec2();
private final double[] cursorPosX = new double[1];
private final double[] cursorPosY = new double[1];
@@ -142,8 +146,8 @@ public class ImGuiImplGlfw {
}
final ImGuiIO io = ImGui.getIO();
io.setMouseWheelH((float) xOffset);
io.setMouseWheel((float) yOffset);
io.setMouseWheelH(io.getMouseWheelH() + (float) xOffset);
io.setMouseWheel(io.getMouseWheel() + (float) yOffset);
}
/**
@@ -155,10 +159,10 @@ public class ImGuiImplGlfw {
}
final ImGuiIO io = ImGui.getIO();
if (action == GLFW_PRESS) {
io.setKeysDown(key, true);
}
if (action == GLFW_RELEASE) {
} else if (action == GLFW_RELEASE) {
io.setKeysDown(key, false);
}
@@ -186,8 +190,7 @@ public class ImGuiImplGlfw {
* Method takes two arguments, which should be a valid GLFW window pointer and a boolean indicating whether or not to install callbacks.
*/
public boolean init(final long windowId, final boolean installCallbacks) {
this.windowId = windowId;
time = 0.0;
this.windowPtr = windowId;
final ImGuiIO io = ImGui.getIO();
@@ -265,10 +268,10 @@ public class ImGuiImplGlfw {
*/
public void dispose() {
if (callbacksInstalled) {
glfwSetMouseButtonCallback(windowId, previousMouseButtonCallback);
glfwSetScrollCallback(windowId, previousScrollCallback);
glfwSetKeyCallback(windowId, previousKeyCallback);
glfwSetCharCallback(windowId, previousCharCallback);
glfwSetMouseButtonCallback(windowPtr, previousMouseButtonCallback);
glfwSetScrollCallback(windowPtr, previousScrollCallback);
glfwSetKeyCallback(windowPtr, previousKeyCallback);
glfwSetCharCallback(windowPtr, previousCharCallback);
callbacksInstalled = false;
}
@@ -279,21 +282,22 @@ public class ImGuiImplGlfw {
private void updateMousePosAndButtons(final float scaleX, final float scaleY) {
final ImGuiIO io = ImGui.getIO();
for (int i = 0; i < ImGuiMouseButton.COUNT; i++) {
io.setMouseDown(i, mouseJustPressed[i] || glfwGetMouseButton(windowId, i) != 0);
// If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
io.setMouseDown(i, mouseJustPressed[i] || glfwGetMouseButton(windowPtr, i) != 0);
mouseJustPressed[i] = false;
}
final ImVec2 mousePosBackup = new ImVec2();
io.getMousePos(mousePosBackup);
io.setMousePos(-Float.MAX_VALUE, -Float.MAX_VALUE);
final boolean focused = glfwGetWindowAttrib(windowId, GLFW_FOCUSED) != 0;
final boolean focused = glfwGetWindowAttrib(windowPtr, GLFW_FOCUSED) != 0;
if (focused) {
if (io.getWantSetMousePos()) {
glfwSetCursorPos(windowId, mousePosBackup.x, mousePosBackup.y);
glfwSetCursorPos(windowPtr, mousePosBackup.x, mousePosBackup.y);
} else {
glfwGetCursorPos(windowId, cursorPosX, cursorPosY);
glfwGetCursorPos(windowPtr, cursorPosX, cursorPosY);
io.setMousePos((float) cursorPosX[0] * scaleX, (float) cursorPosY[0] * scaleY);
}
}
@@ -301,51 +305,51 @@ public class ImGuiImplGlfw {
private void updateMouseCursor() {
final ImGuiIO io = ImGui.getIO();
final boolean noCursorChange = (io.getConfigFlags() & ImGuiConfigFlags.NoMouseCursorChange)
== ImGuiConfigFlags.NoMouseCursorChange;
final boolean cursorDisabled = glfwGetInputMode(windowId, GLFW_CURSOR) == GLFW_CURSOR_DISABLED;
final boolean noCursorChange = (io.getConfigFlags() & ImGuiConfigFlags.NoMouseCursorChange) == ImGuiConfigFlags.NoMouseCursorChange;
final boolean cursorDisabled = glfwGetInputMode(windowPtr, GLFW_CURSOR) == GLFW_CURSOR_DISABLED;
if (noCursorChange || cursorDisabled) {
return;
}
final int cursor = ImGui.getMouseCursor();
if (cursor == ImGuiMouseCursor.None || io.getMouseDrawCursor()) {
glfwSetInputMode(windowId, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
glfwSetInputMode(windowPtr, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
} else {
glfwSetCursor(windowId, mouseCursors[cursor] != 0 ? mouseCursors[cursor]
: mouseCursors[ImGuiMouseCursor.Arrow]);
glfwSetInputMode(windowId, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
glfwSetCursor(windowPtr, mouseCursors[cursor] != 0 ? mouseCursors[cursor] : mouseCursors[ImGuiMouseCursor.Arrow]);
glfwSetInputMode(windowPtr, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
}
}
private void updateGamepads() {
final ImGuiIO io = ImGui.getIO();
final float[] navInputs = new float[ImGuiNavInput.COUNT];
io.setNavInputs(navInputs);
if ((io.getConfigFlags() & ImGuiConfigFlags.NavEnableGamepad) == 0) {
return;
}
io.setNavInputs(emptyNavInputs);
final ByteBuffer buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_1);
final int buttonsCount = buttons.limit();
final FloatBuffer axis = glfwGetJoystickAxes(GLFW_JOYSTICK_1);
final int axisCount = axis.limit();
mapButton(ImGuiNavInput.Activate, 0, buttons, buttonsCount, io); // Cross / A
mapButton(ImGuiNavInput.Activate, 0, buttons, buttonsCount, io); // Cross / A
mapButton(ImGuiNavInput.Cancel, 1, buttons, buttonsCount, io); // Circle / B
mapButton(ImGuiNavInput.Menu, 2, buttons, buttonsCount, io); // Square / X
mapButton(ImGuiNavInput.Input, 3, buttons, buttonsCount, io); // Triangle / Y
mapButton(ImGuiNavInput.DpadLeft, 13, buttons, buttonsCount, io); // D-Pad Left
mapButton(ImGuiNavInput.DpadRight, 11, buttons, buttonsCount, io); // D-Pad Right
mapButton(ImGuiNavInput.Menu, 2, buttons, buttonsCount, io); // Square / X
mapButton(ImGuiNavInput.Input, 3, buttons, buttonsCount, io); // Triangle / Y
mapButton(ImGuiNavInput.DpadLeft, 13, buttons, buttonsCount, io); // D-Pad Left
mapButton(ImGuiNavInput.DpadRight, 11, buttons, buttonsCount, io); // D-Pad Right
mapButton(ImGuiNavInput.DpadUp, 10, buttons, buttonsCount, io); // D-Pad Up
mapButton(ImGuiNavInput.DpadDown, 12, buttons, buttonsCount, io); // D-Pad Down
mapButton(ImGuiNavInput.FocusPrev, 4, buttons, buttonsCount, io); // L1 / LB
mapButton(ImGuiNavInput.FocusNext, 5, buttons, buttonsCount, io); // R1 / RB
mapButton(ImGuiNavInput.TweakSlow, 4, buttons, buttonsCount, io); // L1 / LB
mapButton(ImGuiNavInput.TweakFast, 5, buttons, buttonsCount, io); // R1 / RB
mapButton(ImGuiNavInput.DpadDown, 12, buttons, buttonsCount, io); // D-Pad Down
mapButton(ImGuiNavInput.FocusPrev, 4, buttons, buttonsCount, io); // L1 / LB
mapButton(ImGuiNavInput.FocusNext, 5, buttons, buttonsCount, io); // R1 / RB
mapButton(ImGuiNavInput.TweakSlow, 4, buttons, buttonsCount, io); // L1 / LB
mapButton(ImGuiNavInput.TweakFast, 5, buttons, buttonsCount, io); // R1 / RB
mapAnalog(ImGuiNavInput.LStickLeft, 0, -0.3f, -0.9f, axis, axisCount, io);
mapAnalog(ImGuiNavInput.LStickRight, 0, +0.3f, +0.9f, axis, axisCount, io);
mapAnalog(ImGuiNavInput.LStickUp, 1, +0.3f, +0.9f, axis, axisCount, io);
@@ -390,11 +394,12 @@ public class ImGuiImplGlfw {
final ImGuiIO io = ImGui.getIO();
if (!io.getFonts().isBuilt()) {
throw new IllegalStateException(
"Font atlas not built! It is generally built by the renderer back-end. Missing call to renderer init() method? e.g. ImGuiImplGl3.init().");
"Font atlas not built! It is generally built by the renderer back-end. Missing call to renderer init() method? e.g. ImGuiImplGl3.init()"
);
}
glfwGetWindowSize(windowId, winWidth, winHeight);
glfwGetFramebufferSize(windowId, fbWidth, fbHeight);
glfwGetWindowSize(windowPtr, winWidth, winHeight);
glfwGetFramebufferSize(windowPtr, fbWidth, fbHeight);
final float scaleX = (float) fbWidth[0] / winWidth[0];
final float scaleY = (float) fbHeight[0] / winHeight[0];
@@ -406,6 +411,7 @@ public class ImGuiImplGlfw {
final double currentTime = glfwGetTime();
io.setDeltaTime(time > 0.0 ? (float) (currentTime - time) : 1.0f / 60.0f);
time = currentTime;
updateMousePosAndButtons(scaleX, scaleY);
updateMouseCursor();