#6 Update key event for TreeControl & ListBox

skylicht-lab · Nov 20, 2020 · a8beba7 · a8beba7
1 parent 799b3c3
commit a8beba7
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Showing 8 changed files with 339 additions and 1 deletion.
diff --git a/Projects/Editor/Source/GUI/Controls/CListBox.cpp b/Projects/Editor/Source/GUI/Controls/CListBox.cpp
@@ -141,6 +141,172 @@ namespace Skylicht
 					}
 				}
 			}
+
+			bool CListBox::onKeyUp(bool down)
+			{
+				if (down)
+				{
+					CListRowItem *lastItem = NULL;
+					for (CBase *child : m_innerPanel->Children)
+					{
+						CListRowItem *item = dynamic_cast<CListRowItem*>(child);
+						if (item != NULL)
+						{
+							if (item->getToggle() == true)
+							{
+								if (lastItem != NULL && !lastItem->isDisabled())
+								{
+									if (OnSelected != nullptr)
+										OnSelected(lastItem);
+
+									if (OnSelectChange != nullptr)
+										OnSelectChange(lastItem);
+
+									lastItem->setToggle(true);
+									item->setToggle(false);
+
+									scrollToItem(lastItem);
+									return true;
+								}
+								else
+								{
+									return true;
+								}
+							}
+						}
+						lastItem = item;
+					}
+				}
+
+				return true;
+			}
+
+			bool CListBox::onKeyDown(bool down)
+			{
+				if (down)
+				{
+					CListRowItem *lastItem = NULL;
+					for (CBase *child : m_innerPanel->Children)
+					{
+						CListRowItem *item = dynamic_cast<CListRowItem*>(child);
+						if (item != NULL)
+						{
+							if (lastItem != NULL && !item->isDisabled())
+							{
+								if (OnSelected != nullptr)
+									OnSelected(item);
+
+								if (OnSelectChange != nullptr)
+									OnSelectChange(item);
+
+								item->setToggle(true);
+								lastItem->setToggle(false);
+
+								scrollToItem(item);
+								return true;
+							}
+							else if (item->getToggle() == true)
+							{
+								lastItem = item;
+							}
+						}
+					}
+				}
+				return true;
+			}
+
+			bool CListBox::onKeyHome(bool down)
+			{
+				if (down)
+				{
+					CListRowItem *firstItem = NULL;
+					CListRowItem *currentSelectItem = NULL;
+
+					for (CBase *child : m_innerPanel->Children)
+					{
+						CListRowItem *item = dynamic_cast<CListRowItem*>(child);
+						if (item != NULL)
+						{
+							if (firstItem == NULL && !item->isDisabled())
+								firstItem = item;
+
+							if (item->getToggle() == true)
+							{
+								currentSelectItem = item;
+								break;
+							}
+						}
+					}
+
+					if (currentSelectItem != NULL &&
+						firstItem != NULL &&
+						currentSelectItem != firstItem)
+					{
+						if (OnSelected != nullptr)
+							OnSelected(firstItem);
+
+						if (OnSelectChange != nullptr)
+							OnSelectChange(firstItem);
+
+						firstItem->setToggle(true);
+						currentSelectItem->setToggle(false);
+
+						scrollToItem(firstItem);
+					}
+				}
+				return true;
+			}
+
+			bool CListBox::onKeyEnd(bool down)
+			{
+				if (down)
+				{
+					CListRowItem *lastItem = NULL;
+					CListRowItem *currentSelectItem = NULL;
+
+					for (CBase *child : m_innerPanel->Children)
+					{
+						CListRowItem *item = dynamic_cast<CListRowItem*>(child);
+						if (item != NULL)
+						{
+							if (item->getToggle() == true)
+							{
+								currentSelectItem = item;
+								break;
+							}
+						}
+					}
+
+					List::reverse_iterator i = m_innerPanel->Children.rbegin(), end = m_innerPanel->Children.rend();
+					while (i != end)
+					{
+						CListRowItem *item = dynamic_cast<CListRowItem*>(*i);
+						if (item != NULL && !item->isDisabled())
+						{
+							lastItem = item;
+							break;
+						}
+						++i;
+					}
+
+					if (currentSelectItem != NULL &&
+						lastItem != NULL &&
+						currentSelectItem != lastItem)
+					{
+						if (OnSelected != nullptr)
+							OnSelected(lastItem);
+
+						if (OnSelectChange != nullptr)
+							OnSelectChange(lastItem);
+
+						lastItem->setToggle(true);
+						currentSelectItem->setToggle(false);
+
+						scrollToItem(lastItem);
+					}
+				}
+				return true;
+			}
 		}
 	}
 }
diff --git a/Projects/Editor/Source/GUI/Controls/CListBox.h b/Projects/Editor/Source/GUI/Controls/CListBox.h
@@ -52,7 +52,15 @@ namespace Skylicht
 
 				CListRowItem* getItemByTagValue(int value);
 
-				void unSelectAll();
+				void unSelectAll();				
+
+				virtual bool onKeyUp(bool down);
+
+				virtual bool onKeyDown(bool down);
+
+				virtual bool onKeyHome(bool down);
+
+				virtual bool onKeyEnd(bool down);
 
 			public:
 

diff --git a/Projects/Editor/Source/GUI/Controls/CScrollControl.cpp b/Projects/Editor/Source/GUI/Controls/CScrollControl.cpp
@@ -100,6 +100,22 @@ namespace Skylicht
 				invalidate();
 			}
 
+			void CScrollControl::scrollToItem(CBase *item)
+			{
+				SPoint p = canvasPosToLocal(item->localPosToCanvas());
+
+				if (p.Y < 0)
+				{
+					scrollVerticalOffset(p.Y);
+				}
+				else if (p.Y + item->height() > height())
+				{
+					scrollVerticalOffset(p.Y + item->height() - height());
+				}
+
+				updateScrollBar();
+			}
+
 			void CScrollControl::showScrollBar(bool h, bool v)
 			{
 				m_vertical->setHidden(!v);

diff --git a/Projects/Editor/Source/GUI/Controls/CScrollControl.h b/Projects/Editor/Source/GUI/Controls/CScrollControl.h
@@ -58,6 +58,8 @@ namespace Skylicht
 
 				virtual void onScrollBarH(CBase *base);
 
+				void scrollToItem(CBase *item);
+
 				void showScrollBar(bool h, bool v);
 
 				void enableScroll(bool h, bool v);

diff --git a/Projects/Editor/Source/GUI/Controls/CTreeControl.cpp b/Projects/Editor/Source/GUI/Controls/CTreeControl.cpp
@@ -88,6 +88,66 @@ namespace Skylicht
 					}
 				}
 			}
+
+			bool CTreeControl::onKeyUp(bool down)
+			{
+				return true;
+			}
+
+			bool CTreeControl::onKeyDown(bool down)
+			{
+				return true;
+			}
+
+			bool CTreeControl::onKeyHome(bool down)
+			{
+				if (down)
+				{
+					for (CBase *c : m_innerPanel->Children)
+					{
+						CTreeNode *node = dynamic_cast<CTreeNode*>(c);
+						if (node && !node->isDisabled())
+						{
+							deselectAll();
+							node->setSelected(true);
+							m_scrollControl->scrollToItem(node->getTextItem());
+							return true;
+						}
+					}
+				}
+
+				return true;
+			}
+
+			bool CTreeControl::onKeyEnd(bool down)
+			{
+				if (down)
+				{
+					List::reverse_iterator i = m_innerPanel->Children.rbegin(), end = m_innerPanel->Children.rend();
+
+					while (i != end)
+					{
+						CTreeNode *node = dynamic_cast<CTreeNode*>(*i);
+						if (node && !node->isDisabled())
+						{
+							CTreeNode *child = node->selectLastChild();
+							if (child != NULL)
+							{
+								m_scrollControl->scrollToItem(child->getTextItem());
+							}
+							else
+							{
+								deselectAll();
+								node->setSelected(true);
+								m_scrollControl->scrollToItem(node->getTextItem());
+							}
+							return true;
+						}
+						++i;
+					}
+				}
+				return true;
+			}
 		}
 	}
 }
diff --git a/Projects/Editor/Source/GUI/Controls/CTreeControl.h b/Projects/Editor/Source/GUI/Controls/CTreeControl.h
@@ -56,6 +56,14 @@ namespace Skylicht
 				virtual void onNodeClick(CBase *base);
 
 				virtual void deselectAll();
+
+				virtual bool onKeyUp(bool down);
+
+				virtual bool onKeyDown(bool down);
+
+				virtual bool onKeyHome(bool down);
+
+				virtual bool onKeyEnd(bool down);
 			};
 		}
 	}

diff --git a/Projects/Editor/Source/GUI/Controls/CTreeNode.cpp b/Projects/Editor/Source/GUI/Controls/CTreeNode.cpp
@@ -188,6 +188,70 @@ namespace Skylicht
 
 			}
 
+			CTreeNode* CTreeNode::selectFirstChild()
+			{
+				if (m_expand == false)
+					return NULL;
+
+				if (m_innerPanel->Children.size() == 0)
+					return NULL;
+
+				for (CBase *c : m_innerPanel->Children)
+				{
+					CTreeNode *node = dynamic_cast<CTreeNode*>(c);
+					if (node && !node->isDisabled())
+					{
+						CTreeNode *child = node->selectFirstChild();
+
+						if (child == NULL)
+						{
+							m_root->deselectAll();
+							node->setSelected(true);
+							return node;
+						}
+						else
+						{
+							return child;
+						}
+					}
+				}
+
+				return NULL;
+			}
+
+			CTreeNode* CTreeNode::selectLastChild()
+			{
+				if (m_expand == false)
+					return NULL;
+
+				if (m_innerPanel->Children.size() == 0)
+					return NULL;
+
+				List::reverse_iterator i = m_innerPanel->Children.rbegin(), end = m_innerPanel->Children.rend();
+				while (i != end)
+				{
+					CTreeNode *node = dynamic_cast<CTreeNode*>(*i);
+					if (node && !node->isDisabled())
+					{
+						CTreeNode *child = node->selectLastChild();
+
+						if (child == NULL)
+						{
+							m_root->deselectAll();
+							node->setSelected(true);
+							return node;
+						}
+						else
+						{
+							return child;
+						}
+					}
+					++i;
+				}
+
+				return NULL;
+			}
+
 			void CTreeNode::setSelected(bool b)
 			{
 				if (m_selected == b)