v1.4.4

source/windowing/StarListWidget.cpp

@@ -0,0 +1,262 @@
+#include "StarListWidget.hpp"
+#include "StarGuiReader.hpp"
+#include "StarJsonExtra.hpp"
+#include "StarRandom.hpp"
+#include "StarImageWidget.hpp"
+#include "StarAssets.hpp"
+#include "StarRoot.hpp"
+
+namespace Star {
+
+ListWidget::ListWidget(Json const& schema) : m_schema(schema) {
+  m_selectedItem = NPos;
+  m_columns = 1;
+  setSchema(m_schema);
+  updateSizeAndPosition();
+}
+
+ListWidget::ListWidget() {
+  m_selectedItem = NPos;
+  m_columns = 1;
+  updateSizeAndPosition();
+}
+
+RectI ListWidget::relativeBoundRect() const {
+  if (m_fillDown)
+    return RectI::withSize(relativePosition() - Vec2I(0, size()[1]), size());
+  else
+    return RectI::withSize(relativePosition(), size());
+}
+
+void ListWidget::setCallback(WidgetCallbackFunc callback) {
+  m_callback = move(callback);
+}
+
+bool ListWidget::sendEvent(InputEvent const& event) {
+  if (!m_visible)
+    return false;
+
+  for (size_t i = m_members.size(); i != 0; --i) {
+    auto child = m_members[i - 1];
+    if (child->sendEvent(event)
+        || (event.is<MouseButtonDownEvent>() && child->inMember(*context()->mousePosition(event))
+              && event.get<MouseButtonDownEvent>().mouseButton == MouseButton::Left)) {
+      setSelected(i - 1);
+      return true;
+    }
+    setHovered(i - 1, event.is<MouseMoveEvent>() && child->inMember(*context()->mousePosition(event)));
+  }
+
+  return false;
+}
+
+void ListWidget::setSchema(Json const& schema) {
+  clear();
+  m_schema = schema;
+  try {
+    m_selectedBG = schema.getString("selectedBG", "");
+    m_unselectedBG = schema.getString("unselectedBG", "");
+    m_hoverBG = schema.getString("hoverBG", "");
+    m_disabledBG = schema.getString("disabledBG", "");
+    if (m_disabledBG.empty() && !m_unselectedBG.empty())
+      m_disabledBG = m_unselectedBG + Root::singleton().assets()->json("/interface.config:disabledButton").toString();
+    m_spacing = jsonToVec2I(schema.get("spacing"));
+    m_memberSize = jsonToVec2I(schema.get("memberSize"));
+  } catch (JsonException const& e) {
+    throw GuiException(strf("Missing required value in map: %s", outputException(e, false)));
+  }
+  updateSizeAndPosition();
+}
+
+WidgetPtr ListWidget::addItem() {
+  auto newItem = constructWidget();
+  addChild(strf("%d", Random::randu64()), newItem);
+  updateSizeAndPosition();
+
+  return newItem;
+}
+
+WidgetPtr ListWidget::addItem(size_t at) {
+  auto newItem = constructWidget();
+  addChildAt(strf("%d", Random::randu64()), newItem, at);
+  updateSizeAndPosition();
+
+  if (m_selectedItem != NPos && at <= m_selectedItem)
+    setSelected(m_selectedItem + 1);
+
+  return newItem;
+}
+
+WidgetPtr ListWidget::addItem(WidgetPtr existingItem) {
+  addChild(strf("%d", Random::randu64()), existingItem);
+  updateSizeAndPosition();
+
+  return existingItem;
+}
+
+WidgetPtr ListWidget::constructWidget() {
+  WidgetPtr newItem = make_shared<Widget>();
+  m_reader.construct(m_schema.get("listTemplate"), newItem.get());
+  newItem->setSize(m_memberSize);
+  m_doScissor ? newItem->enableScissoring() : newItem->disableScissoring();
+  return newItem;
+}
+
+void ListWidget::updateSizeAndPosition() {
+  int rows = m_members.size() % m_columns ? m_members.size() / m_columns + 1 : m_members.size() / m_columns;
+  for (size_t i = 0; i < m_members.size(); i++) {
+    Vec2I currentOffset;
+    int col = i % m_columns;
+    int row = rows - (i / m_columns) - 1;
+    if (m_fillDown)
+      row -= rows;
+    currentOffset = Vec2I((m_memberSize[0] + m_spacing[0]) * col, (m_memberSize[1] + m_spacing[1]) * row);
+    if (!m_fillDown)
+      currentOffset[1] += m_spacing[1];
+    m_members[i]->setPosition(currentOffset);
+  }
+  if (m_members.size()) {
+    auto width = (m_memberSize[0] + m_spacing[0]) * m_columns;
+    auto height = (m_memberSize[1] + m_spacing[1]) * rows;
+    setSize(Vec2I(width, height));
+  } else {
+    setSize(Vec2I());
+  }
+}
+
+void ListWidget::setEnabled(size_t pos, bool enabled) {
+  if (pos != NPos && pos < listSize()) {
+    if (enabled) {
+      m_disabledItems.remove(pos);
+      if (auto bgWidget = itemAt(pos)->fetchChild<ImageWidget>("background"))
+        bgWidget->setImage(pos == m_selectedItem ? m_selectedBG : m_unselectedBG);
+    } else {
+      m_disabledItems.add(pos);
+      if (m_selectedItem == pos)
+        clearSelected();
+      if (auto bgWidget = itemAt(pos)->fetchChild<ImageWidget>("background"))
+        bgWidget->setImage(m_disabledBG);
+    }
+  }
+}
+
+void ListWidget::setHovered(size_t pos, bool hovered) {
+  if (m_hoverBG == "")
+    return;
+
+  if (pos != m_selectedItem && pos < listSize() && !m_disabledItems.contains(pos)) {
+    if (auto bgWidget = itemAt(pos)->fetchChild<ImageWidget>("background")) {
+      if (hovered)
+        bgWidget->setImage(m_hoverBG);
+      else
+        bgWidget->setImage(m_unselectedBG);
+    }
+  }
+}
+
+void ListWidget::setSelected(size_t pos) {
+  if ((m_selectedItem != NPos) && (m_selectedItem < listSize())) {
+    if (auto bgWidget = selectedWidget()->fetchChild<ImageWidget>("background"))
+      bgWidget->setImage(m_unselectedBG);
+  }
+
+  if (!m_disabledItems.contains(pos) && m_selectedItem != pos) {
+    m_selectedItem = pos;
+    if (m_callback)
+      m_callback(this);
+  }
+
+  if (m_selectedItem != NPos) {
+    if (auto bgWidget = selectedWidget()->fetchChild<ImageWidget>("background"))
+      bgWidget->setImage(m_selectedBG);
+  }
+}
+
+void ListWidget::clearSelected() {
+  setSelected(NPos);
+}
+
+void ListWidget::setSelectedWidget(WidgetPtr selected) {
+  auto offset = itemPosition(selected);
+
+  if (offset == NPos) {
+    throw GuiException("Attempted to select item not in list.");
+  }
+
+  setSelected(offset);
+}
+
+void ListWidget::registerMemberCallback(String const& name, WidgetCallbackFunc const& callback) {
+  m_reader.registerCallback(name, callback);
+}
+
+void ListWidget::setFillDown(bool fillDown) {
+  m_fillDown = fillDown;
+}
+
+void ListWidget::setColumns(uint64_t columns) {
+  m_columns = columns;
+}
+
+void ListWidget::removeItem(size_t at) {
+  removeChildAt(at);
+  if (m_selectedItem == at)
+    setSelected(NPos);
+  else if (m_selectedItem != NPos && m_selectedItem > at)
+    setSelected(m_selectedItem - 1);
+
+  updateSizeAndPosition();
+}
+
+void ListWidget::removeItem(WidgetPtr item) {
+  auto offset = itemPosition(item);
+
+  if (offset == NPos) {
+    throw GuiException("Attempted to remove item not in list.");
+  }
+
+  removeItem(offset);
+}
+
+void ListWidget::clear() {
+  setSelected(NPos);
+  removeAllChildren();
+  updateSizeAndPosition();
+}
+
+size_t ListWidget::selectedItem() const {
+  return m_selectedItem;
+}
+
+size_t ListWidget::itemPosition(WidgetPtr item) const {
+  size_t offset = NPos;
+  for (size_t i = 0; i < m_members.size(); ++i) {
+    if (m_members[i] == item) {
+      offset = i;
+      break;
+    }
+  }
+  return offset;
+}
+
+WidgetPtr ListWidget::itemAt(size_t n) const {
+  if (n < m_members.size()) {
+    return m_members[n];
+  } else {
+    return {};
+  }
+}
+
+WidgetPtr ListWidget::selectedWidget() const {
+  return itemAt(m_selectedItem);
+}
+
+List<WidgetPtr> const& ListWidget::list() const {
+  return m_members;
+}
+
+size_t ListWidget::listSize() const {
+  return numChildren();
+}
+
+}