一、「公式映射」卡顿(用户报告:只是点进输入框就卡,编辑过公式后彻底没法用) 1. 真因:菜单内联编辑提交时无条件回写初值 ⇒ 点进输入框再点别处就把 formula = "f(t)" 写进样式;而 HasFormula() 只判 !empty(),于是 DrawTransformOrderPreserving() 变 false、ComputeLaneRange() 每帧逐点扫描 整条信号(2580 万采样 ≈ 960ms/帧)。 修法:新增 FormulaIsIdentity()(空串与 f(t) 等价);提交时归一化后恒等即清空; BuildLaneVisuals() 为「网格幅值范围」加指纹缓存(数据指针/长度/统计值 + 影响数值的样式字段),键不变直接复用(实测 0.0005ms)。 2. 真实公式仍然贵:新增 PlotView::AcquireFormulaEnvelope()(变换后的逐分组 包络,65536 组,按需算一次并缓存),BuildPolyline 的包络带改用它。 实测:静止 215→21ms、中键拖动 8ms、缩放最坏 843→81ms;极值仍逐点统计 (不会漏尖峰)。 3. AcquireProgram 只比 data() 指针 + 长度 ⇒ std::wstring 短串走 SSO 时, 等长改公式会一直复用旧程序(f(t)^2→f(t)^3 波形不更新)。改为按内容判定。 二、公式语法(Utilities/FormulaEval) - 新增 ^ 幂(右结合,2^3^2=512、2^-1=0.5、-2^2=-4),支持 2^f(t) 与 f(t)^2; - 常量 e / pi(大小写均接受,保存前统一小写); - 数据点只允许 X / x / f(t):单独的 f 不再接受(且不归一化,直接报错); - 数字扫描修正:2e 里的 e 不再被当成指数吞掉。 三、「公式映射」输入框(SignalPanelMenu) - Y= 画在输入框内部(非编辑态),进入编辑态只显示公式本身; - label 留空 ⇒ 输入框占满整行,与下方「系数调整」同宽。 四、「重采样」面板 - 修复点进间隔/频率输入框后输入框整块消失(paintOverlays 的 PaintEditField 名单漏了 RESAMPLE_INTERVAL / RESAMPLE_FREQUENCY); - 最大/最小数据间隔:3 位有效数字 + Δt 复合单位,末尾追加(频率)尾缀; - 间隔显示自适应单位、编辑态用秒;频率显示自适应单位、编辑态用 Hz(均不带单位); - 面板宽度按含(频率)尾缀的文本量宽。 五、十进制格式化(Utf8Util) - 新增 FormatDecimal(绝不产生科学计数法);FormatDurationCompound / FormatDurationSeconds / FormatFrequency 改用它,Δt/间隔/频率读数不再出现 1e-05。 验证:离屏探针 .preflight/perf/probe/formulacheck_main.cpp 75/75; make release / make debug 零 warning;Release 856,064 B。
828 lines
19 KiB
C++
828 lines
19 KiB
C++
#include "Utf8Util.hpp"
|
||
|
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#include <windows.h>
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|
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#include <cmath>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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|
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namespace jdi
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{
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namespace
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{
|
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/** @brief 判断字符是否为需要裁掉的空白字符。 */
|
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bool IsSpaceChar(wchar_t c)
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{
|
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return c == L' ' || c == L'\t' || c == L'\r' || c == L'\n' || c == L'\v' || c == L'\f' ||
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c == static_cast<wchar_t>(0x00A0);
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}
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/** @brief 判断字符是否为 ASCII 大写字母。 */
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bool IsUpperAscii(wchar_t c)
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{
|
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return c >= L'A' && c <= L'Z';
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}
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/** @brief 时间间隔的显示单位。 */
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struct DurationUnit
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{
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double scale = 1.0; /**< 1 个该单位等于多少秒。 */
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const wchar_t* name = L"s"; /**< 单位名称。 */
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};
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}
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std::wstring Utf8ToWide(const char* text, int length)
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{
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if (text == nullptr)
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{
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return std::wstring();
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}
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int byteCount = (length < 0) ? static_cast<int>(std::strlen(text)) : length;
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if (byteCount <= 0)
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{
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return std::wstring();
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}
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int wideCount = MultiByteToWideChar(CP_UTF8, 0, text, byteCount, nullptr, 0);
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if (wideCount <= 0)
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{
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return std::wstring();
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}
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std::wstring result(static_cast<size_t>(wideCount), L'\0');
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MultiByteToWideChar(CP_UTF8, 0, text, byteCount, &result[0], wideCount);
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return result;
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}
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std::wstring Trim(const std::wstring& text)
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{
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size_t begin = 0;
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size_t end = text.size();
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while (begin < end && IsSpaceChar(text[begin]))
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{
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++begin;
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}
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while (end > begin && IsSpaceChar(text[end - 1]))
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{
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--end;
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}
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return text.substr(begin, end - begin);
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}
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std::wstring StripQuotes(const std::wstring& text)
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{
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std::wstring trimmed = Trim(text);
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if (trimmed.size() >= 2)
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{
|
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const wchar_t first = trimmed.front();
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const wchar_t last = trimmed.back();
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if ((first == L'"' && last == L'"') || (first == L'\'' && last == L'\''))
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{
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trimmed = trimmed.substr(1, trimmed.size() - 2);
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}
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}
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return trimmed;
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}
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std::wstring ToLowerAscii(const std::wstring& text)
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{
|
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std::wstring result = text;
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for (wchar_t& c : result)
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{
|
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if (IsUpperAscii(c))
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{
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c = static_cast<wchar_t>(c - L'A' + L'a');
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}
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}
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return result;
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}
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|
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bool ContainsInsensitive(const std::wstring& text, const std::wstring& needle)
|
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{
|
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if (needle.empty())
|
||
{
|
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return true;
|
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}
|
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if (needle.size() > text.size())
|
||
{
|
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return false;
|
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}
|
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|
||
const size_t last = text.size() - needle.size();
|
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for (size_t i = 0; i <= last; ++i)
|
||
{
|
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size_t j = 0;
|
||
while (j < needle.size())
|
||
{
|
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wchar_t a = text[i + j];
|
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wchar_t b = needle[j];
|
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if (IsUpperAscii(a))
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{
|
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a = static_cast<wchar_t>(a - L'A' + L'a');
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}
|
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if (IsUpperAscii(b))
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{
|
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b = static_cast<wchar_t>(b - L'A' + L'a');
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}
|
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if (a != b)
|
||
{
|
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break;
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}
|
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++j;
|
||
}
|
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if (j == needle.size())
|
||
{
|
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return true;
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}
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}
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return false;
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}
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/** @brief 快速解析路径允许保留的最大有效位数(超过则交回 strtod 以保证正确舍入)。 */
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const int kMaxFastDigits = 17;
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/** @brief 快速解析路径允许使用的最大十进制指数(超出查表范围,交回 strtod)。 */
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const int kMaxFastExponent = 22;
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/** @brief 10 的 0-22 次幂精确表(该范围内每位都是 double 可精确表示的十进制数)。 */
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const double kPow10Table[23] = {1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9, 1e10, 1e11,
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1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19, 1e20, 1e21, 1e22};
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|
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/**
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* @brief 标准库解析路径:去掉首尾空白后交给 strtod。
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*
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* 作为快速路径的保底实现,保证十六进制浮点、inf/nan、超范围指数、
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* 带尾部杂字符(如 "12abc")等输入的处理与改造前完全一致。
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*
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* @param [IN] begin 文本起始指针。
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* @param [IN] end 文本结束指针(不包含)。
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* @param [OUT] value 解析结果。
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* @return 解析出数值返回 true。
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*/
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bool ParseDoubleSlow(const char* begin, const char* end, double& value)
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{
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const char* p = begin;
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while (p < end && (*p == ' ' || *p == '\t'))
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{
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++p;
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}
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const char* q = end;
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while (q > p && (q[-1] == ' ' || q[-1] == '\t' || q[-1] == '\r' || q[-1] == '\n'))
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{
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--q;
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}
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if (p >= q)
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{
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||
return false;
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||
}
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char buffer[96];
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const size_t length = static_cast<size_t>(q - p);
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const char* text = nullptr;
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std::string dynamic;
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if (length < sizeof(buffer))
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||
{
|
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std::memcpy(buffer, p, length);
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buffer[length] = '\0';
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text = buffer;
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||
}
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else
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{
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dynamic.assign(p, q);
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text = dynamic.c_str();
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}
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char* stop = nullptr;
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const double parsed = std::strtod(text, &stop);
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if (stop == text)
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{
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return false;
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}
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value = parsed;
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return true;
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||
}
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|
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bool TryParseDouble(const char* begin, const char* end, double& value)
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{
|
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if (begin == nullptr || end == nullptr || begin >= end)
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{
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return false;
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}
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// ===== 快速路径:纯十进制数值 =====
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// 大文件解析的绝对瓶颈就在这里:ucrt 的 strtod 要处理本地化、十六进制浮点、
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// 无穷/NaN 等全部语法,实测每次调用约 335ns;百万行级文件需调用上千万次,
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// 单解析就可能耗掉几十秒。下面这条路径只处理最常见的十进制写法(实测约 13ns,
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// 快 25 倍),其余写法(含尾部杂字符)原样交回 strtod,
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// 因此输入接受范围与原先完全一致。
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const char* head = begin;
|
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while (head < end && (*head == ' ' || *head == '\t'))
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{
|
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++head;
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}
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const char* tail = end;
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while (tail > head && (tail[-1] == ' ' || tail[-1] == '\t' || tail[-1] == '\r' || tail[-1] == '\n'))
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{
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--tail;
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}
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if (head >= tail)
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{
|
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return false;
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}
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const char* cursor = head;
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bool negative = false;
|
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if (*cursor == '+' || *cursor == '-')
|
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{
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negative = (*cursor == '-');
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++cursor;
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}
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unsigned long long mantissa = 0;
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int digits = 0;
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int exponent = 0;
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||
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// 整数部分:超过有效位数的高位数字只影响量级,累加进指数。
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while (cursor < tail && *cursor >= '0' && *cursor <= '9')
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{
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if (digits < kMaxFastDigits)
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{
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mantissa = mantissa * 10ull + static_cast<unsigned>(*cursor - '0');
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++digits;
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}
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else
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{
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++exponent;
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}
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++cursor;
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}
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// 小数部分:每保留一位就记一次小数位数;超出有效位数的直接丢弃(已低于 double 精度)。
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int fractionDigits = 0;
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if (cursor < tail && *cursor == '.')
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{
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++cursor;
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while (cursor < tail && *cursor >= '0' && *cursor <= '9')
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{
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if (digits < kMaxFastDigits)
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{
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mantissa = mantissa * 10ull + static_cast<unsigned>(*cursor - '0');
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++digits;
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++fractionDigits;
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}
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++cursor;
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}
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}
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if (digits == 0)
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{
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return ParseDoubleSlow(begin, end, value);
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}
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exponent -= fractionDigits;
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||
if (cursor < tail && (*cursor == 'e' || *cursor == 'E'))
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{
|
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++cursor;
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bool expNegative = false;
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if (cursor < tail && (*cursor == '+' || *cursor == '-'))
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{
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expNegative = (*cursor == '-');
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++cursor;
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||
}
|
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if (cursor >= tail || *cursor < '0' || *cursor > '9')
|
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{
|
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return ParseDoubleSlow(begin, end, value);
|
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}
|
||
int expValue = 0;
|
||
while (cursor < tail && *cursor >= '0' && *cursor <= '9')
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{
|
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if (expValue < 1000000)
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{
|
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expValue = expValue * 10 + (*cursor - '0');
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}
|
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++cursor;
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||
}
|
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exponent += expNegative ? -expValue : expValue;
|
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}
|
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|
||
// 存在未消费字符(如 "12abc"、"1,5")或指数超出查表范围时交回标准库:
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// 既保持原先 strtod 的宽松接受语义,也保证极端量级的正确舍入。
|
||
if (cursor != tail || exponent > kMaxFastExponent || exponent < -kMaxFastExponent)
|
||
{
|
||
return ParseDoubleSlow(begin, end, value);
|
||
}
|
||
|
||
double result = static_cast<double>(mantissa);
|
||
if (exponent > 0)
|
||
{
|
||
result *= kPow10Table[exponent];
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||
}
|
||
else if (exponent < 0)
|
||
{
|
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result /= kPow10Table[-exponent];
|
||
}
|
||
// mantissa 超过 2^53(16 位以上有效数字)时这里会比 strtod 多一次舍入,
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// 相对误差不超过 1 ULP(实测 ≤2.3e-16),在波形显示与标尺(约 6 位有效数字)上不可见。
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value = negative ? -result : result;
|
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return true;
|
||
}
|
||
std::wstring FormatNumber(double value, int decimals)
|
||
{
|
||
if (decimals < 0)
|
||
{
|
||
decimals = 0;
|
||
}
|
||
if (decimals > 12)
|
||
{
|
||
decimals = 12;
|
||
}
|
||
|
||
wchar_t buffer[96];
|
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swprintf(buffer, sizeof(buffer) / sizeof(buffer[0]), L"%.*f", decimals, value);
|
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return std::wstring(buffer);
|
||
}
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|
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std::wstring FormatDecimal(double value, int significantDigits)
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||
{
|
||
if (std::isnan(value))
|
||
{
|
||
return L"NaN";
|
||
}
|
||
if (std::isinf(value))
|
||
{
|
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return (value > 0.0) ? L"+Inf" : L"-Inf";
|
||
}
|
||
if (significantDigits < 1)
|
||
{
|
||
significantDigits = 1;
|
||
}
|
||
if (significantDigits > 15)
|
||
{
|
||
significantDigits = 15;
|
||
}
|
||
const double magnitude = std::fabs(value);
|
||
if (magnitude == 0.0)
|
||
{
|
||
return L"0";
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}
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||
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||
// 小数位数 = 让结果保留约 `significantDigits` 位有效数字(整数部分已超出时取 0 位)。
|
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// ⚠️ **绝不用 `%g` / `%e`**:`%g` 在量级小于 1e-4 或大于 1e6 时会切换成科学计数法,
|
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// 对“时间间隔 / 频率”这类读数极不友好(用户 2026-11-03 明确要求小数形式)。
|
||
int decimals = 0;
|
||
{
|
||
const double exponent = std::floor(std::log10(magnitude));
|
||
decimals = significantDigits - 1 - static_cast<int>(exponent);
|
||
}
|
||
if (decimals < 0)
|
||
{
|
||
decimals = 0;
|
||
}
|
||
if (decimals > 12)
|
||
{
|
||
decimals = 12;
|
||
}
|
||
|
||
wchar_t buffer[160];
|
||
swprintf(buffer, sizeof(buffer) / sizeof(buffer[0]), L"%.*f", decimals, value);
|
||
std::wstring text(buffer);
|
||
|
||
// 去掉尾随的 0 与孤立的小数点(`1.50000` → `1.5`、`2.000000` → `2`)。
|
||
if (text.find(L'.') != std::wstring::npos)
|
||
{
|
||
std::size_t last = text.find_last_not_of(L'0');
|
||
if (last == std::wstring::npos)
|
||
{
|
||
return L"0";
|
||
}
|
||
if (text[last] == L'.')
|
||
{
|
||
--last;
|
||
}
|
||
text.erase(last + 1);
|
||
}
|
||
if (text == L"-0")
|
||
{
|
||
text = L"0";
|
||
}
|
||
return text;
|
||
}
|
||
|
||
std::wstring FormatDurationCompound(double seconds)
|
||
{
|
||
if (!std::isfinite(seconds))
|
||
{
|
||
return L"—";
|
||
}
|
||
const double value = std::fabs(seconds);
|
||
if (value <= 0.0)
|
||
{
|
||
return L"0s";
|
||
}
|
||
|
||
// ---- 顶级单位高于 s(h / min):整合为 h/min/s(整数秒)----
|
||
// 注意条件必须是 >= 60s:1~60s 属于"顶级单位为 s"的情况,需按下一条规则处理
|
||
// (非整数秒要递进到 ms,例如 5.06s → "5s 60ms")。
|
||
if (value >= 60.0)
|
||
{
|
||
const long long totalSeconds = static_cast<long long>(std::llround(value));
|
||
long long hours = 0;
|
||
long long minutes = 0;
|
||
long long secs = totalSeconds;
|
||
if (totalSeconds >= 3600)
|
||
{
|
||
hours = totalSeconds / 3600;
|
||
secs = totalSeconds % 3600;
|
||
}
|
||
if (secs >= 60)
|
||
{
|
||
minutes = secs / 60;
|
||
secs = secs % 60;
|
||
}
|
||
|
||
std::wstring text;
|
||
const auto append = [&text](long long amount, const wchar_t* unit)
|
||
{
|
||
if (amount <= 0)
|
||
{
|
||
return;
|
||
}
|
||
if (!text.empty())
|
||
{
|
||
text += L" ";
|
||
}
|
||
text += std::to_wstring(amount);
|
||
text += unit;
|
||
};
|
||
append(hours, L"h");
|
||
append(minutes, L"min");
|
||
append(secs, L"s");
|
||
if (!text.empty())
|
||
{
|
||
return text;
|
||
}
|
||
}
|
||
|
||
// ---- 顶级单位为 s:整数秒 + 可选 ms ----
|
||
if (value >= 1.0)
|
||
{
|
||
const double whole = std::floor(value);
|
||
const double fraction = value - whole;
|
||
std::wstring text = FormatDecimal(whole) + L"s";
|
||
const double remainderMs = fraction * 1000.0;
|
||
if (remainderMs >= 1.0e-6)
|
||
{
|
||
text += L" ";
|
||
text += FormatDecimal(remainderMs);
|
||
text += L"ms";
|
||
}
|
||
return text;
|
||
}
|
||
|
||
// ---- 顶级单位低于 s:ms / us / ns / ps ----
|
||
const DurationUnit subUnits[] = {
|
||
{1.0e-3, L"ms"}, {1.0e-6, L"us"}, {1.0e-9, L"ns"}, {1.0e-12, L"ps"},
|
||
};
|
||
const std::size_t subCount = sizeof(subUnits) / sizeof(subUnits[0]);
|
||
std::size_t index = subCount - 1;
|
||
for (std::size_t i = 0; i < subCount; ++i)
|
||
{
|
||
if (value >= subUnits[i].scale)
|
||
{
|
||
index = i;
|
||
break;
|
||
}
|
||
}
|
||
|
||
// 顶级单位为 ps:不再递进次级单位(保留小数)。
|
||
if (index + 1 >= subCount)
|
||
{
|
||
return FormatDecimal(value / subUnits[index].scale) + L" " + subUnits[index].name;
|
||
}
|
||
|
||
const double scaled = value / subUnits[index].scale;
|
||
double whole = std::floor(scaled);
|
||
double fraction = scaled - whole;
|
||
// 浮点误差可能导致 fraction 极接近 1(例如 4.9999999),归一化一下。
|
||
if (fraction >= 1.0 - 1.0e-9)
|
||
{
|
||
whole += 1.0;
|
||
fraction = 0.0;
|
||
}
|
||
|
||
std::wstring text = FormatValue(whole);
|
||
text += subUnits[index].name;
|
||
// 仍是该单位的整数 → 不显示下级单位。
|
||
const double remainder = fraction * subUnits[index].scale;
|
||
const double inNext = remainder / subUnits[index + 1].scale;
|
||
if (inNext >= 1.0e-6)
|
||
{
|
||
text += L" ";
|
||
text += FormatDecimal(inNext);
|
||
text += subUnits[index + 1].name;
|
||
}
|
||
return text;
|
||
}
|
||
|
||
std::wstring FormatDurationSeconds(double seconds)
|
||
{
|
||
if (!std::isfinite(seconds))
|
||
{
|
||
return L"0";
|
||
}
|
||
// ⚠️ 内联编辑的数值**不得出现科学计数法**(用户 2026-11-03 要求)。
|
||
return FormatDecimal(std::fabs(seconds), 12);
|
||
}
|
||
|
||
std::wstring FormatFrequency(double hertz)
|
||
{
|
||
if (!std::isfinite(hertz) || hertz <= 0.0)
|
||
{
|
||
return L"—";
|
||
}
|
||
const wchar_t* unit = L"Hz";
|
||
double scaled = hertz;
|
||
if (hertz >= 1.0e9)
|
||
{
|
||
unit = L"GHz";
|
||
scaled = hertz / 1.0e9;
|
||
}
|
||
else if (hertz >= 1.0e6)
|
||
{
|
||
unit = L"MHz";
|
||
scaled = hertz / 1.0e6;
|
||
}
|
||
else if (hertz >= 1.0e3)
|
||
{
|
||
unit = L"kHz";
|
||
scaled = hertz / 1.0e3;
|
||
}
|
||
// ⚠️ 频率同样不得出现科学计数法(用户 2026-11-03 要求):
|
||
// `FormatValue` 的 `%.6g` 在 1e-5 Hz 这类量级会输出 “1e-06”,改为十进制形式。
|
||
return FormatDecimal(scaled) + L" " + unit;
|
||
}
|
||
|
||
std::wstring FormatByteSize(unsigned long long bytes)
|
||
{ // 单位自适应:GB / MB / KB(阈值按 1024 进制)。
|
||
constexpr double kKilo = 1024.0;
|
||
constexpr double kMega = kKilo * 1024.0;
|
||
constexpr double kGiga = kMega * 1024.0;
|
||
|
||
const double value = static_cast<double>(bytes);
|
||
const wchar_t* unit = L"KB";
|
||
double scaled = value / kKilo;
|
||
if (value >= kGiga)
|
||
{
|
||
unit = L"GB";
|
||
scaled = value / kGiga;
|
||
}
|
||
else if (value >= kMega)
|
||
{
|
||
unit = L"MB";
|
||
scaled = value / kMega;
|
||
}
|
||
|
||
wchar_t buffer[64];
|
||
// ⚠️ 宽字符格式化必须用 `%ls`:MinGW 的 swprintf 按 C99 语义处理 `%s`
|
||
//(在宽格式串里 `%s` 表示**窄**字符串),写成 `%s` 会把宽字符串按单字节读取,
|
||
// 于是 "KB" 只打印出 "K"。
|
||
swprintf(buffer, sizeof(buffer) / sizeof(buffer[0]), L"%.2f %ls", scaled, unit);
|
||
return std::wstring(buffer);
|
||
}
|
||
|
||
std::wstring FormatValue(double value)
|
||
{
|
||
if (std::isnan(value))
|
||
{
|
||
return L"NaN";
|
||
}
|
||
if (std::isinf(value))
|
||
{
|
||
return (value > 0.0) ? L"+Inf" : L"-Inf";
|
||
}
|
||
|
||
wchar_t buffer[96];
|
||
swprintf(buffer, sizeof(buffer) / sizeof(buffer[0]), L"%.6g", value);
|
||
return std::wstring(buffer);
|
||
}
|
||
|
||
std::wstring FormatTick(double value, double step)
|
||
{
|
||
if (value == 0.0)
|
||
{
|
||
return L"0";
|
||
}
|
||
if (!std::isfinite(value))
|
||
{
|
||
return FormatValue(value);
|
||
}
|
||
|
||
int decimals = 0;
|
||
if (step > 0.0 && std::isfinite(step))
|
||
{
|
||
const double magnitude = std::ceil(-std::log10(step) - 1.0e-9);
|
||
if (magnitude > 0.0)
|
||
{
|
||
decimals = static_cast<int>(magnitude);
|
||
}
|
||
}
|
||
if (decimals > 9)
|
||
{
|
||
decimals = 9;
|
||
}
|
||
|
||
wchar_t buffer[96];
|
||
swprintf(buffer, sizeof(buffer) / sizeof(buffer[0]), L"%.*f", decimals, value);
|
||
std::wstring text(buffer);
|
||
if (text.size() > 15)
|
||
{
|
||
swprintf(buffer, sizeof(buffer) / sizeof(buffer[0]), L"%.4e", value);
|
||
text.assign(buffer);
|
||
}
|
||
return text;
|
||
}
|
||
|
||
std::wstring FormatCount(unsigned long long value)
|
||
{
|
||
wchar_t buffer[32];
|
||
swprintf(buffer, sizeof(buffer) / sizeof(buffer[0]), L"%llu", value);
|
||
|
||
std::wstring digits(buffer);
|
||
std::wstring result;
|
||
result.reserve(digits.size() + digits.size() / 3);
|
||
|
||
const size_t length = digits.size();
|
||
for (size_t i = 0; i < length; ++i)
|
||
{
|
||
if (i > 0 && ((length - i) % 3u) == 0u)
|
||
{
|
||
result.push_back(L',');
|
||
}
|
||
result.push_back(digits[i]);
|
||
}
|
||
return result;
|
||
}
|
||
|
||
double NiceStep(double range, int targetTicks)
|
||
{
|
||
if (!(range > 0.0) || !std::isfinite(range) || targetTicks <= 0)
|
||
{
|
||
return 1.0;
|
||
}
|
||
|
||
const double raw = range / static_cast<double>(targetTicks);
|
||
const double magnitude = std::pow(10.0, std::floor(std::log10(raw)));
|
||
const double normalized = raw / magnitude;
|
||
|
||
double nice = 10.0;
|
||
if (normalized <= 1.0)
|
||
{
|
||
nice = 1.0;
|
||
}
|
||
else if (normalized <= 2.0)
|
||
{
|
||
nice = 2.0;
|
||
}
|
||
else if (normalized <= 5.0)
|
||
{
|
||
nice = 5.0;
|
||
}
|
||
|
||
return nice * magnitude;
|
||
}
|
||
|
||
void BuildTicks(double minValue, double maxValue, double step, std::vector<double>& ticks)
|
||
{
|
||
ticks.clear();
|
||
if (!std::isfinite(minValue) || !std::isfinite(maxValue) || !(step > 0.0) || !std::isfinite(step))
|
||
{
|
||
return;
|
||
}
|
||
if (maxValue < minValue)
|
||
{
|
||
const double temp = minValue;
|
||
minValue = maxValue;
|
||
maxValue = temp;
|
||
}
|
||
|
||
// ⚠️ `minValue / step` 在极端量级下可能溢出成 inf(例如 1e300 / 1e-300),
|
||
// 而 double → long long 的越界转换是**未定义行为**。先确认商落在 long long 范围内,
|
||
// 否则直接放弃画刻度(总比画出一批垃圾刻度安全)。
|
||
constexpr double kTickIndexLimit = 9.0e18;
|
||
const double firstIndex = std::ceil(minValue / step - 1.0e-9);
|
||
const double lastIndex = std::floor(maxValue / step + 1.0e-9);
|
||
if (!(std::fabs(firstIndex) < kTickIndexLimit) || !(std::fabs(lastIndex) < kTickIndexLimit))
|
||
{
|
||
return;
|
||
}
|
||
const long long first = static_cast<long long>(firstIndex);
|
||
const long long last = static_cast<long long>(lastIndex);
|
||
if (last < first)
|
||
{
|
||
return;
|
||
}
|
||
|
||
const long long count = last - first + 1;
|
||
if (count > 512)
|
||
{
|
||
return;
|
||
}
|
||
|
||
ticks.reserve(static_cast<size_t>(count));
|
||
for (long long index = first; index <= last; ++index)
|
||
{
|
||
ticks.push_back(static_cast<double>(index) * step);
|
||
}
|
||
}
|
||
|
||
bool CopyTextToClipboard(HWND owner, const std::wstring& text)
|
||
{
|
||
if (text.empty())
|
||
{
|
||
return false;
|
||
}
|
||
|
||
if (OpenClipboard(owner) == FALSE)
|
||
{
|
||
return false;
|
||
}
|
||
|
||
bool success = false;
|
||
if (EmptyClipboard() != FALSE)
|
||
{
|
||
const SIZE_T bytes = (text.size() + 1) * sizeof(wchar_t);
|
||
HGLOBAL handle = GlobalAlloc(GMEM_MOVEABLE, bytes);
|
||
if (handle != nullptr)
|
||
{
|
||
void* target = GlobalLock(handle);
|
||
if (target != nullptr)
|
||
{
|
||
std::memcpy(target, text.c_str(), bytes);
|
||
GlobalUnlock(handle);
|
||
if (SetClipboardData(CF_UNICODETEXT, handle) != nullptr)
|
||
{
|
||
success = true;
|
||
}
|
||
else
|
||
{
|
||
GlobalFree(handle);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
GlobalFree(handle);
|
||
}
|
||
}
|
||
}
|
||
|
||
CloseClipboard();
|
||
return success;
|
||
}
|
||
|
||
bool PasteTextFromClipboard(HWND owner, std::wstring& text)
|
||
{
|
||
text.clear();
|
||
|
||
if (OpenClipboard(owner) == FALSE)
|
||
{
|
||
return false;
|
||
}
|
||
|
||
bool success = false;
|
||
if (IsClipboardFormatAvailable(CF_UNICODETEXT) != FALSE)
|
||
{
|
||
HANDLE handle = GetClipboardData(CF_UNICODETEXT);
|
||
if (handle != nullptr)
|
||
{
|
||
const void* source = GlobalLock(handle);
|
||
if (source != nullptr)
|
||
{
|
||
const wchar_t* wide = static_cast<const wchar_t*>(source);
|
||
text.assign(wide);
|
||
GlobalUnlock(handle);
|
||
success = !text.empty();
|
||
}
|
||
}
|
||
}
|
||
CloseClipboard();
|
||
|
||
// 单行输入框:把换行与制表符折叠为空格,避免内容被截断显示。
|
||
if (success)
|
||
{
|
||
for (wchar_t& c : text)
|
||
{
|
||
if (c == L'\r' || c == L'\n' || c == L'\t')
|
||
{
|
||
c = L' ';
|
||
}
|
||
}
|
||
}
|
||
return success;
|
||
}
|
||
|
||
} // namespace jdi
|