feat: horizontal scroll

src/graphics/ui/elements/Container.cpp

@@ -11,7 +11,7 @@
 using namespace gui;
 
 Container::Container(GUI& gui, glm::vec2 size) : UINode(gui, size) {
-    actualLength = size.y;
+    actualLengthY = size.y;
     setColor(glm::vec4());
 }
 
@@ -26,7 +26,7 @@ std::shared_ptr<UINode> Container::getAt(const glm::vec2& pos) {
     if (!isInside(pos)) {
         return nullptr;
     }
-    int diff = (actualLength-size.y);
+    int diff = (actualLengthY-size.y);
     if (scrollable && diff > 0 && pos.x > calcPos().x + getSize().x - scrollBarWidth) {
         return UINode::getAt(pos);
     }
@@ -65,11 +65,11 @@ void Container::mouseMove(int x, int y) {
     auto pos = calcPos();
     x -= pos.x;
     y -= pos.y;
-    int diff = (actualLength-size.y);
+    int diff = (actualLengthY-size.y);
     if (diff > 0) {
-        scroll -= (y - prevScrollY) / static_cast<float>(size.y) * actualLength;
-        scroll = -glm::min(
-            glm::max(static_cast<float>(-scroll), 0.0f), actualLength - size.y
+        scrollY -= (y - prevScrollY) / static_cast<float>(size.y) * actualLengthY;
+        scrollY = -glm::min(
+            glm::max(static_cast<float>(-scrollY), 0.0f), actualLengthY - size.y
         );
     }
     prevScrollY = y;
@@ -110,7 +110,10 @@ void Container::act(float delta) {
 }
 
 void Container::scrolled(int value) {
-    int diff = (actualLength-getSize().y);
+    auto size = getSize();
+    int diff = (actualLengthY > size.y ? actualLengthY - size.y : actualLengthX - size.x);
+    int& scroll = (actualLengthY > size.y ? scrollY : scrollX);
+
     if (scroll < 0 && diff <= 0) {
         scroll = 0;
     }
@@ -146,14 +149,14 @@ void Container::draw(const DrawContext& pctx, const Assets& assets) {
                 node->draw(pctx, assets);
         }
 
-        int diff = (actualLength-size.y);
+        int diff = (actualLengthY-size.y);
         if (scrollable && diff > 0) {
-            int h = glm::max(size.y / actualLength * size.y, scrollBarWidth / 2.0f);
+            int h = glm::max(size.y / actualLengthY * size.y, scrollBarWidth / 2.0f);
             batch->untexture();
             batch->setColor(glm::vec4(1, 1, 1, 0.3f));
             batch->rect(
                 pos.x + size.x - scrollBarWidth,
-                pos.y - scroll / static_cast<float>(diff) * (size.y - h),
+                pos.y - scrollY / static_cast<float>(diff) * (size.y - h),
                 scrollBarWidth, h
             );
         }
@@ -248,7 +251,7 @@ void Container::refresh() {
 }
 
 void Container::setScroll(int scroll) {
-    this->scroll = scroll;
+    this->scrollY = scroll;
 }
 
 const std::vector<std::shared_ptr<UINode>>& Container::getNodes() const {

src/graphics/ui/elements/Container.hpp

@@ -13,10 +13,12 @@ namespace gui {
     protected:
         std::vector<std::shared_ptr<UINode>> nodes;
         std::vector<IntervalEvent> intervalEvents;
-        int scroll = 0;
+        int scrollY = 0;
+        int scrollX = 0;
         int scrollStep = 40;
         int scrollBarWidth = 10;
-        int actualLength = 0;
+        int actualLengthY = 0;
+        int actualLengthX = 0;
         bool scrollable = true;
 
         bool isScrolling() const {
@@ -40,7 +42,7 @@ namespace gui {
         virtual void setScrollable(bool flag);
         void listenInterval(float interval, OnTimeOut callback, int repeat=-1);
         virtual glm::vec2 getContentOffset() const override {
-            return glm::vec2(0.0f, scroll);
+            return glm::vec2(scrollX, scrollY);
         };
         virtual void setSize(const glm::vec2& size) override;
         virtual int getScrollStep() const;

src/graphics/ui/elements/Panel.cpp

@@ -41,10 +41,10 @@ glm::vec2 Panel::getContentSize() const {
 void Panel::cropToContent() {
     if (maxLength > 0.0f) {
         setSize(glm::vec2(
-            getSize().x, glm::max(minLength, glm::min(maxLength, actualLength))
+            glm::max(minLength, glm::min(maxLength, actualLengthX)), glm::max(minLength, glm::min(maxLength, actualLengthY))
         ));
     } else {
-        setSize(glm::vec2(getSize().x, glm::max(minLength, actualLength)));
+        setSize(glm::vec2(glm::max(minLength, actualLengthX), glm::max(minLength, actualLengthY)));
     }
 }
 
@@ -93,7 +93,8 @@ void Panel::refresh() {
             y += nodeSize.y + margin.w + interval;
             maxw = fmax(maxw, ex + nodeSize.x + margin.z + padding.z);
         }
-        actualLength = y + padding.w;
+        actualLengthX = size.x;
+        actualLengthY = y + padding.w;
     } else {
         float maxh = size.y;
         for (auto& node : nodes) {
@@ -115,6 +116,7 @@ void Panel::refresh() {
             x += nodesize.x + margin.z + interval;
             maxh = fmax(maxh, ey + nodesize.y + margin.w + padding.w);
         }
-        actualLength = size.y;
+        actualLengthY = size.y;
+        actualLengthX = x + padding.z;
     }
 }

src/graphics/ui/elements/TextBox.cpp

@@ -452,7 +452,7 @@ void TextBox::refreshLabel() {
         uint height = label->getLinesNumber() * rawTextCache.metrics.lineHeight *
                       label->getLineInterval();
         label->setSize(glm::vec2(label->getSize().x, height));
-        actualLength = height;
+        actualLengthY = height;
     } else {
         setScrollable(false);
     }