Add TextFieldElement obSubmit

src/kekengine/cpp/ui/uielements.cpp

@@ -206,8 +206,6 @@ TextFieldElement::TextFieldElement(UIValue x, UIValue y, UIValue w, std::shared_
 	this->focusColor = Colors::GRAY;
 	this->text = "";
 
-	RectangleElement::color = color;
-
 	this->textElement = new TextElement(uiPx(0), uiPx(0));
 	textElement->textBounds = TextBounds::LINE;
 	textElement->color = Colors::BLACK;
@@ -264,7 +262,6 @@ UIElementType TextFieldElement::getType() {
 }
 
 void TextFieldElement::focusEnter() {
-	RectangleElement::color = focusColor;
 	cursor->visible = true;
 
 	capture = Input::captureKeyboardInput(
@@ -290,6 +287,7 @@ void TextFieldElement::focusEnter() {
 				switch(event.key) {
 					case GLFW_KEY_ENTER:
 						Input::uncaptureKeyboardInput(_this->capture);
+						_this->onSubmit(_this->text);
 						break;
 					case GLFW_KEY_LEFT: {
 						std::u32string str = Unicode::convertStdToU32(_this->text);
@@ -321,7 +319,6 @@ void TextFieldElement::focusEnter() {
 }
 
 void TextFieldElement::focusExit() {
-	RectangleElement::color = color;
 	cursor->visible = false;
 
 	Input::uncaptureKeyboardInput(capture);
@@ -332,6 +329,7 @@ void TextFieldElement::focusExit() {
 }
 
 void TextFieldElement::draw(UIPoint screenPos, glm::mat4 projection) {
+	RectangleElement::color = focused ? focusColor : color;
 	RectangleElement::draw(screenPos, projection);
 
 	double time = glfwGetTime();

src/kekengine/include/uielements.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "ui.h"
+#include "utils.h"
 #include <string>
 
 namespace kek {
@@ -96,6 +97,8 @@ class ButtonElement: public RectangleElement {
 	virtual void draw(UIPoint screenPos, glm::mat4 projection);
 };
 
+typedef GenericCallable<std::string> SubmitCallback;
+
 class TextFieldElement: public RectangleElement {
 
   protected:
@@ -114,6 +117,8 @@ class TextFieldElement: public RectangleElement {
 	TextElement *textElement;
 	RectangleElement *cursor;
 
+	SubmitCallback onSubmit;
+
 	TextFieldElement(UIValue x, UIValue y, UIValue w, std::shared_ptr<Font> font);
 
 	TextFieldElement(UIValue x, UIValue y, UIValue w);

src/kekgame/cpp/kekgame.cpp

@@ -8,11 +8,14 @@
 #include <BulletCollision/CollisionShapes/btBoxShape.h>
 #include <btBulletCollisionCommon.h>
 #include <btBulletDynamicsCommon.h>
+#include <memory>
+#include <string>
 
 #include "internal.h"
 #include "internal/physics.h"
 #include "ui.h"
 #include "uielements.h"
+#include "utils.h"
 
 using namespace kek;
 
@@ -126,9 +129,32 @@ int main(int argc, char **argv) {
 	UI::addElement(button3);
 
 	TextFieldElement *textField = new TextFieldElement(uiPx(10), uiPx(200), uiPx(500));
+	textField->color = Colors::GREEN;
+	textField->focusColor = Colors::RED;
+	textField->textElement->color = Colors::WHITE;
+
+	struct es {
+		ButtonElement *b;
+		TextFieldElement *t;
+
+		~es() {
+			std::cout << "oh nyo, I got destroyed" << std::endl;
+		}
+	} e;
+
+	e.b = button3;
+	e.t = textField;
+
+	textField->onSubmit = SubmitCallback([](std::string text, void *data) {
+		es *ep = (es *) data;
+		ep->b->text->setText(text);
+		ep->t->setText("");
+		ep->t->onSubmit = SubmitCallback();
+	},
+		&e);
 	UI::addElement(textField);
 
-	TextElement *text = new TextElement(uiPx(0), uiPx(260));
+	TextElement *text = new TextElement(uiPx(10), uiPx(260));
 	text->setText("Lorem ipsum\ndolor sit amet\nsussy amogus, KekEngine sample text\nWhen the impostor is\nAmogus");
 	UI::addElement(text);