From 927611c06ba4d2bd3a1d24e176fe3f561384f3d7 Mon Sep 17 00:00:00 2001
From: neveix <i@neveix.ru>
Date: Thu, 13 Aug 2026 22:16:21 +0500
Subject: [PATCH] implement a bit

---
 src/graphics/ui/elements/InventoryView.cpp | 7 +++++++
 src/items/ItemStack.cpp                    | 8 ++++++++
 src/items/ItemStack.hpp                    | 1 +
 3 files changed, 16 insertions(+)

diff --git a/src/graphics/ui/elements/InventoryView.cpp b/src/graphics/ui/elements/InventoryView.cpp
index e99a86d33..29111a4ad 100644
--- a/src/graphics/ui/elements/InventoryView.cpp
+++ b/src/graphics/ui/elements/InventoryView.cpp
@@ -1,5 +1,7 @@
 #include "InventoryView.hpp"
 
+#include <iostream>
+
 #include <glm/glm.hpp>
 #include <utility>
 
@@ -368,6 +370,7 @@ void SlotView::performLeftClick(ItemStack& stack, ItemStack& grabbed) {
         return;
     }
 
+    std::cout << "perform left click" << std::endl;
     if (!layout.itemSource && stack.accepts(grabbed) && layout.placing) {
         action = InteractionAction::PUT;
         stack.move(grabbed, *content->getIndices());
@@ -375,6 +378,10 @@ void SlotView::performLeftClick(ItemStack& stack, ItemStack& grabbed) {
         if (layout.itemSource) {
             if (grabbed.isEmpty()) {
                 action = InteractionAction::TAKE;
+                if (input.pressed(Keycode::LEFT_SHIFT)) {
+                    stack.maximizeCount(*content->getIndices());
+                    std::cout << "maximized grabbed item" << std::endl;
+                }
                 grabbed.set(stack);
             } else {
                 action = InteractionAction::PUT;
diff --git a/src/items/ItemStack.cpp b/src/items/ItemStack.cpp
index f99d8700a..d0f39d5fe 100644
--- a/src/items/ItemStack.cpp
+++ b/src/items/ItemStack.cpp
@@ -48,6 +48,14 @@ void ItemStack::setCount(itemcount_t count) {
     }
 }
 
+void ItemStack::maximizeCount(const ContentIndices& indices) {
+    auto& def = indices.items.require(getItemId());
+    this->count = def.stackSize;
+    if (count == 0) {
+        clear();
+    }
+}
+
 void ItemStack::setField(std::string_view name, dv::value value) {
     if (fields == nullptr) {
         if (value == nullptr) {
diff --git a/src/items/ItemStack.hpp b/src/items/ItemStack.hpp
index 4896bc39e..1ec3fe41d 100644
--- a/src/items/ItemStack.hpp
+++ b/src/items/ItemStack.hpp
@@ -18,6 +18,7 @@ public:
     void set(const ItemStack& item);
     void set(ItemStack&& item);
     void setCount(itemcount_t count);
+    void maximizeCount(const ContentIndices& indices);
 
     /// @brief Set a field in the item stack data.
     void setField(std::string_view name, dv::value value);