fix: 统一输入框编辑能力、修复拖拽合并网格并支持光标吸附数据点

统一文本输入（新增 Utilities/Inc/TextEdit.hpp + TextEdit.cpp） - 一个共享的编辑模型，提供光标/选区/过滤/限长，接入全部输入框：样式区数值与信号名/分组名、波形图例改名、视图标签页改名、拾色器 R/G/B 与色号、光标时间与网格上下限。 - 新增能力：Ctrl+A/C/X/V（含剪贴板清洗）、Shift+方向键与 Home/End 选区、退格与删除清除选区、代理对安全的光标步进。 - 渲染改为选区高亮 + 插入符，文本超出框宽时水平滚动并让插入符始终可见；初始态为整段选中，首字符键入即整体替换（保持"登录框"式交互）。 - 新增 Utf8Util::PasteTextFromClipboard（换行/制表符折叠为空格）。修复网格合并（Utilities/Src/DataModel.cpp） - 拖拽信号到其它网格时先固定目标网格的锚信号，再移除源信号并按引用找回目标，避免空网格回收导致下标错位，从"与原网格交换位置"改为真正合并。 - 自定义划分下未分配网格的可见信号改为各自独占一个新网格，修复"拖拽合并后再勾选新信号被并入该合并网格"的问题。绘图区（Components/PlotView） - 网格右键菜单新增"时间轴自适应（匹配本网格）"，把时间轴对齐到该网格信号范围。 - 时间轴放大到采样点在屏幕上可分辨（>=6 逻辑像素）时，拖动光标吸附到最近数据点；缩小到无法分辨时保持自由移动，避免光标"跳格"。验证：真实输入脚本逐项核对——拖拽合并后单网格含两条曲线、拖拽合并再勾选新信号得 G2 独立网格、 Shift 选区 + Delete 清除、Ctrl+A/C/V 复制粘贴、46 字符文本水平滚动、拾色器色号 1E90FF、标签页改名 A1、光标时间框复制粘贴、全视图拖动得 0.522213（不吸附）而放大后得 0.28125（= 225 × 0.00125，已吸附）。
2026-09-30 13:40:58 +08:00
1 parent 4e295a2a7d
commit 53768b8b25
@@ -0,0 +1,340 @@
+#include "TextEdit.hpp"
+
+#include <algorithm>
+
+#include "Utf8Util.hpp"
+
+namespace jdi
+{
+
+	namespace
+	{
+		/** @brief 判断字符是否为 UTF-16 高位代理。 */
+		bool IsHighSurrogate(wchar_t c)
+		{
+			return c >= 0xD800 && c <= 0xDBFF;
+		}
+
+		/** @brief 判断字符是否为 UTF-16 低位代理。 */
+		bool IsLowSurrogate(wchar_t c)
+		{
+			return c >= 0xDC00 && c <= 0xDFFF;
+		}
+
+		/** @brief 判断字符是否符合数值输入（数字与科学计数法符号）。 */
+		bool IsNumberChar(wchar_t c)
+		{
+			return (c >= L'0' && c <= L'9') || c == L'.' || c == L'-' || c == L'+' || c == L'e' || c == L'E';
+		}
+
+		/** @brief 判断字符是否为十六进制数字。 */
+		bool IsHexDigit(wchar_t c)
+		{
+			return (c >= L'0' && c <= L'9') || (c >= L'a' && c <= L'f') || (c >= L'A' && c <= L'F');
+		}
+
+		/** @brief 判断字符是否为十进制数字。 */
+		bool IsDigit(wchar_t c)
+		{
+			return c >= L'0' && c <= L'9';
+		}
+	}
+
+	bool TextEdit::AcceptsCharacter(EditFilter filter, wchar_t character)
+	{
+		switch (filter)
+		{
+		case EditFilter::NUMBER:
+			return IsNumberChar(character);
+		case EditFilter::HEX:
+			return IsHexDigit(character) || character == L'#';
+		case EditFilter::BYTE:
+			return IsDigit(character);
+		case EditFilter::ANY:
+		default:
+			return character >= L' ' && character != 0x7F;
+		}
+	}
+
+	void TextEdit::Begin(const std::wstring& text, bool selectAll, EditFilter filter, std::size_t maxLength)
+	{
+		m_active = true;
+		m_text = text;
+		m_filter = filter;
+		m_maxLength = maxLength;
+		m_caret = m_text.size();
+		m_anchor = selectAll ? 0 : m_text.size();
+		m_fresh = selectAll && !m_text.empty();
+	}
+
+	void TextEdit::End()
+	{
+		m_active = false;
+		m_fresh = false;
+		m_text.clear();
+		m_caret = 0;
+		m_anchor = 0;
+		m_filter = EditFilter::ANY;
+		m_maxLength = 0;
+	}
+
+	std::size_t TextEdit::ClampOffset(std::size_t offset) const
+	{
+		if (offset > m_text.size())
+		{
+			offset = m_text.size();
+		}
+		// 避免光标落在代理对中间（否则渲染与删除都会错位）。
+		if (offset > 0 && offset < m_text.size() && IsLowSurrogate(m_text[offset]) &&
+		    IsHighSurrogate(m_text[offset - 1]))
+		{
+			--offset;
+		}
+		return offset;
+	}
+
+	std::size_t TextEdit::StepLeft(std::size_t offset) const
+	{
+		if (offset == 0)
+		{
+			return 0;
+		}
+		--offset;
+		if (offset > 0 && IsLowSurrogate(m_text[offset]) && IsHighSurrogate(m_text[offset - 1]))
+		{
+			--offset;
+		}
+		return offset;
+	}
+
+	std::size_t TextEdit::StepRight(std::size_t offset) const
+	{
+		if (offset >= m_text.size())
+		{
+			return m_text.size();
+		}
+		++offset;
+		if (offset < m_text.size() && IsLowSurrogate(m_text[offset]) && IsHighSurrogate(m_text[offset - 1]))
+		{
+			++offset;
+		}
+		return offset;
+	}
+
+	bool TextEdit::ReplaceSelection(const std::wstring& replacement)
+	{
+		const bool hadSelection = HasSelection();
+		const std::size_t begin = SelectionBegin();
+		const std::size_t end = SelectionEnd();
+
+		std::wstring merged = m_text.substr(0, begin) + replacement + m_text.substr(end);
+		if (m_maxLength > 0 && merged.size() > m_maxLength)
+		{
+			merged.resize(m_maxLength);
+		}
+
+		const bool changed = (merged != m_text) || hadSelection;
+		m_text = std::move(merged);
+		m_caret = ClampOffset(begin + replacement.size());
+		m_anchor = m_caret;
+		m_fresh = false;
+		return changed;
+	}
+
+	bool TextEdit::Insert(wchar_t character)
+	{
+		if (!m_active || character == 0)
+		{
+			return false;
+		}
+		if (!AcceptsCharacter(m_filter, character))
+		{
+			return true;
+		}
+		return ReplaceSelection(std::wstring(1, character));
+	}
+
+	bool TextEdit::Backspace()
+	{
+		if (!m_active)
+		{
+			return false;
+		}
+		if (HasSelection())
+		{
+			// 存在选区时退格清除整个选区。
+			return ReplaceSelection(std::wstring());
+		}
+		if (m_caret == 0)
+		{
+			m_fresh = false;
+			return false;
+		}
+
+		const std::size_t previous = StepLeft(m_caret);
+		const std::size_t removed = m_caret - previous;
+		m_text.erase(previous, removed);
+		m_caret = previous;
+		m_anchor = previous;
+		m_fresh = false;
+		return true;
+	}
+
+	bool TextEdit::DeleteForward()
+	{
+		if (!m_active)
+		{
+			return false;
+		}
+		if (HasSelection())
+		{
+			// 存在选区时删除键清除整个选区。
+			return ReplaceSelection(std::wstring());
+		}
+		if (m_caret >= m_text.size())
+		{
+			m_fresh = false;
+			return false;
+		}
+
+		const std::size_t next = StepRight(m_caret);
+		m_text.erase(m_caret, next - m_caret);
+		m_anchor = m_caret;
+		m_fresh = false;
+		return true;
+	}
+
+	bool TextEdit::MoveCaret(int delta, bool extendSelection)
+	{
+		if (!m_active || delta == 0)
+		{
+			return false;
+		}
+
+		std::size_t offset = m_caret;
+		const int steps = (delta > 0) ? delta : -delta;
+		for (int index = 0; index < steps; ++index)
+		{
+			offset = (delta > 0) ? StepRight(offset) : StepLeft(offset);
+		}
+		offset = ClampOffset(offset);
+
+		if (offset == m_caret)
+		{
+			return false;
+		}
+
+		m_caret = offset;
+		if (!extendSelection)
+		{
+			m_anchor = offset;
+			m_fresh = false;
+		}
+		else
+		{
+			m_fresh = false;
+		}
+		return true;
+	}
+
+	bool TextEdit::MoveHome(bool extendSelection)
+	{
+		if (!m_active || m_caret == 0)
+		{
+			return false;
+		}
+		m_caret = 0;
+		if (!extendSelection)
+		{
+			m_anchor = 0;
+		}
+		m_fresh = false;
+		return true;
+	}
+
+	bool TextEdit::MoveEnd(bool extendSelection)
+	{
+		if (!m_active || m_caret == m_text.size())
+		{
+			return false;
+		}
+		m_caret = m_text.size();
+		if (!extendSelection)
+		{
+			m_anchor = m_caret;
+		}
+		m_fresh = false;
+		return true;
+	}
+
+	void TextEdit::SelectAll()
+	{
+		m_anchor = 0;
+		m_caret = m_text.size();
+		m_fresh = !m_text.empty();
+	}
+
+	bool TextEdit::CopyToClipboard(HWND owner) const
+	{
+		if (m_text.empty())
+		{
+			return false;
+		}
+		const std::wstring payload =
+		    HasSelection() ? m_text.substr(SelectionBegin(), SelectionEnd() - SelectionBegin()) : m_text;
+		return CopyTextToClipboard(owner, payload);
+	}
+
+	bool TextEdit::CutToClipboard(HWND owner)
+	{
+		if (m_text.empty())
+		{
+			return false;
+		}
+		const bool copied = CopyToClipboard(owner);
+		if (!copied)
+		{
+			return false;
+		}
+		if (HasSelection())
+		{
+			return ReplaceSelection(std::wstring());
+		}
+		m_text.clear();
+		m_caret = 0;
+		m_anchor = 0;
+		m_fresh = false;
+		return true;
+	}
+
+	bool TextEdit::PasteFromClipboard(HWND owner)
+	{
+		if (!m_active)
+		{
+			return false;
+		}
+
+		std::wstring pasted;
+		if (!PasteTextFromClipboard(owner, pasted))
+		{
+			return false;
+		}
+
+		// 按当前过滤策略清洗粘贴内容，避免数值框被灌入非法字符。
+		std::wstring cleaned;
+		cleaned.reserve(pasted.size());
+		for (const wchar_t c : pasted)
+		{
+			if (AcceptsCharacter(m_filter, c))
+			{
+				cleaned.push_back(c);
+			}
+		}
+		if (cleaned.empty())
+		{
+			return false;
+		}
+		return ReplaceSelection(cleaned);
+	}
+
+} // namespace jdi