一、悬停高亮恢复"整条曲线发光"(上一轮裁成鼠标附近一段 ⇒ 满幅方波上就是个长方形色块) 光晕的语义是"整条曲线一起发光",对编码器这种满幅方波,一列包络本来就跨满网格高, 裁成 144px 宽 × 满高的窗口在屏幕上就是一个像选区框的色块(用户 2026-10-18 第二轮报告)。 修法(PlotViewPaint.cpp): - PaintSignalHaloFor 恢复**整条**几何(包络带 FillPath / 折线 DrawLines); - 新增 PaintSignalHaloCached:光晕几何只取决于「信号 + 视界 + 网格几何 + 样式」,**与鼠标无关** ⇒ 渲染一次进离屏位图,之后每帧只做一次 AlphaBlend(源位图预乘 alpha,用 256×256 查表); - 缓存键与 AcquirePolyline 同源,**不含网格屏幕位置**(滚动网格只按新位置贴同一张位图)。 210ms/帧(整条描边)→ 一次性 15ms 渲染 + 每帧 ~2ms 贴图。 halocheck 校验:悬停必命中(60/60 位置)、光晕贴合带宽(outsideBand=0)、不越出网格、 bbox 覆盖整条曲线(不是中段方块)、列表行悬停联动仍生效。 二、信号列表动画卡顿的三个真因(探针 panelstutter:129 个可见网格 + 反复"展开→切组复选框→收起") 1) 面板每帧重画 ~36 行 × ~0.35ms(十来个 GDI+ 原语)⇒ panel.Paint 24~35ms; 2) 动画帧里仍在预热网格图层:每帧重建 1 个网格图层,2500 万采样信号 10~30ms ⇒ 帧被拉长; 3) 勾选分组会把上百个**离屏**网格排进待重画队列,随后每帧补 1 个 ⇒ 数秒持续掉帧。 修法: 1) 行位图缓存(SignalPanel::PaintRowCached):按"行的可见内容"做键,整行渲染进离屏 DIB, 命中时一次 BitBlt。panel.Paint 24~35ms → 5~6ms。 ⚠️ 必须 DIB + 内存 DC(gd::Bitmap 上 GDI 会关闭 ClearType,整列文字退化); ⚠️ 行内几何在 RowRect 里平移(GDI 文本不认 GDI+ 世界变换,否则文字画到小位图之外); ⚠️ 渲染到行位图时不按列表矩形裁剪,裁剪放到贴图时的 DC(GDI 不认 GDI+ 裁剪, 必须自己 SaveDC + IntersectClipRect,折起动画时行不许画到组名上); ⚠️ 缓存上限 192 行(≈10MB)。静态画面逐像素一致(面板区域 54/275200 不同)。 2) 新增 PlotView::SetAnimationBusy:UI 动画期间不预热网格图层(队列保留,动画结束后继续)。 3) 待重画队列只保留可视 + 预取带内的网格;RollWideBuffer 不再登记离屏网格。 实测:展开 p50 35ms → 13ms、收起 33ms → 13ms、动画帧内图层重建 56 次 → 0 次。 三、试过并放弃(避免以后重走) - ExtTextOutW 替代 DrawTextW:快 2~4 倍但光栅化不同(面板 10% 像素差异)⇒ 观感变化,放弃; - 用 gd::Bitmap 做行位图:文字丢失 ClearType,放弃。 四、验证(全部离屏,不占用鼠标/键盘/屏幕) - 新增 .preflight/perf/panelstutter_main.cpp(8/8)、halocheck_main.cpp(16/16); - 回归 verify 49/49、panelanim 158/158、hoverdrag 20/20、gridanim 93/93、lanescroll 23/23、 datacheck 69/69、edgecheck 46/46、errcheck 19/19、panflash 19/19、stress 6/6; - make release / make debug 零警告(TARGET_FILE_NAME=TargetCheck/TargetCheckD)。 文档:Documents/agent_mem.md 追加本轮小节(含 4 条新规则:高亮语义不得为性能让步、 GDI 文本的三个隐形陷阱、面板卡顿先量"每行成本×可见行数"与"本帧是否顺带做绘图区重活"、 动画帧内绝不做可延迟的整帧级工作)。
593 lines
18 KiB
C++
593 lines
18 KiB
C++
#include "PaintUtil.hpp"
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#include <algorithm>
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#include <cmath>
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#include <cstddef>
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#include <functional>
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#include <mutex>
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#include <unordered_map>
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#include <utility>
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#include <string>
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namespace jdi
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{
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namespace
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{
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/**
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* @brief 颜色样块补充描边的不透明度阈值。
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*
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* 不透明度低于该值时,色块自身与浅色背景的对比度已不足,需要额外描边才能辨识;
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* 高于该值时按需求不绘制描边,保持与预设色块一致的纯净外观。
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*/
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/**
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* @brief 矩形面积超过该阈值(逻辑像素²)且为不透明色时,改用 GDI 填充。
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*
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* GDI+ 的 FillRectangle 约 2.2ns/像素;面积过小时 GDI 的 GetHDC/ReleaseHDC
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* 固定开销反而不划算,因此在阈值以下仍走 GDI+。
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*/
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const float kGdiFillAreaThreshold = 20000.0f;
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}
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// 圆角矩形路径是公开的几何构建器:`UiFillRoundRect` / `UiDrawRoundRect` / 需要把位图或渐变
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// **裁剪进同一个圆角形状**的调用方共用它,保证"填充的形状"与"描边的形状"逐点一致。
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void UiBuildRoundRectPath(gd::GraphicsPath& path, const gd::RectF& rect, float radius)
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{
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if (rect.Width <= 0.0f || rect.Height <= 0.0f)
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{
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return;
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}
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float diameter = radius * 2.0f;
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if (diameter > rect.Width)
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{
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diameter = rect.Width;
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}
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if (diameter > rect.Height)
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{
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diameter = rect.Height;
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}
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if (diameter < 1.0f)
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{
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path.AddRectangle(rect);
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return;
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}
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const float right = rect.X + rect.Width;
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const float bottom = rect.Y + rect.Height;
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path.AddArc(rect.X, rect.Y, diameter, diameter, 180.0f, 90.0f);
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path.AddArc(right - diameter, rect.Y, diameter, diameter, 270.0f, 90.0f);
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path.AddArc(right - diameter, bottom - diameter, diameter, diameter, 0.0f, 90.0f);
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path.AddArc(rect.X, bottom - diameter, diameter, diameter, 90.0f, 90.0f);
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path.CloseFigure();
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}
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namespace
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{
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/**
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* @brief 创建指定字号的界面字体。
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* @param [IN] face 字体名称。
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* @param [IN] pixelHeight 字符高度(像素)。
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* @param [IN] bold 是否加粗。
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* @return 字体句柄,失败返回 nullptr。
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*/
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HFONT CreateUiFont(const wchar_t* face, int pixelHeight, bool bold)
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{
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LOGFONTW logFont = {};
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logFont.lfHeight = -pixelHeight;
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logFont.lfWeight = bold ? FW_SEMIBOLD : FW_NORMAL;
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logFont.lfCharSet = DEFAULT_CHARSET;
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logFont.lfOutPrecision = OUT_TT_PRECIS;
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logFont.lfClipPrecision = CLIP_DEFAULT_PRECIS;
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logFont.lfQuality = CLEARTYPE_QUALITY;
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logFont.lfPitchAndFamily = DEFAULT_PITCH | FF_DONTCARE;
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wcsncpy(logFont.lfFaceName, face, LF_FACESIZE - 1);
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logFont.lfFaceName[LF_FACESIZE - 1] = L'\0';
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HFONT font = CreateFontIndirectW(&logFont);
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if (font == nullptr)
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{
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font = static_cast<HFONT>(GetStockObject(DEFAULT_GUI_FONT));
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}
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return font;
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}
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} // namespace
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namespace
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{
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/**
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* @brief 文本宽度测量的缓存键(字体句柄 + 文本)。
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*/
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struct MeasureKey
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{
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HFONT font = nullptr;
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std::wstring text;
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bool operator==(const MeasureKey& other) const
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{
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return font == other.font && text == other.text;
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}
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};
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struct MeasureKeyHash
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{
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std::size_t operator()(const MeasureKey& key) const
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{
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std::size_t hash = std::hash<const void*>()(key.font);
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for (const wchar_t character : key.text)
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{
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hash = hash * 131u + static_cast<std::size_t>(character);
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}
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return hash;
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}
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};
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/** 上限保护:超过时整体清空(缓存只是加速手段,清空后重新填充即可)。 */
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constexpr std::size_t kMeasureCacheLimit = 4096;
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/** 文本的像素宽度与字符单元高度(后者与 `DT_VCENTER` 的居中口径一致)。 */
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struct TextExtent
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{
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float width = 0.0f; /**< 像素宽度。 */
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float height = 0.0f; /**< 字符单元高度。 */
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};
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std::unordered_map<MeasureKey, TextExtent, MeasureKeyHash> g_measureCache;
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std::mutex g_measureMutex;
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/**
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* @brief 取文本的宽 / 高(带缓存)。
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*
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* ⚠️ 必须走 GDI(`GetDC` + `GetTextExtentPoint32W` + `ReleaseDC`),单次约 10µs;
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* 而布局与绘制每帧会把同一批字符串**重复测量成百上千次**,因此按 (字体, 文本) 缓存。
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* 高度也一并缓存:`DrawUiText` 的快速路径要用它做垂直居中(见那里的说明)。
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*/
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TextExtent MeasureText(HFONT font, const std::wstring& text)
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{
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if (text.empty() || font == nullptr)
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{
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return TextExtent();
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}
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const MeasureKey key{font, text};
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{
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std::lock_guard<std::mutex> lock(g_measureMutex);
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const auto found = g_measureCache.find(key);
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if (found != g_measureCache.end())
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{
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return found->second;
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}
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}
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HDC hdc = GetDC(nullptr);
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if (hdc == nullptr)
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{
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return TextExtent();
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}
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HGDIOBJ oldFont = SelectObject(hdc, font);
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SIZE size = {};
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GetTextExtentPoint32W(hdc, text.c_str(), static_cast<int>(text.size()), &size);
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SelectObject(hdc, oldFont);
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ReleaseDC(nullptr, hdc);
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TextExtent extent;
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extent.width = static_cast<float>(size.cx);
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extent.height = static_cast<float>(size.cy);
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{
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std::lock_guard<std::mutex> lock(g_measureMutex);
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if (g_measureCache.size() >= kMeasureCacheLimit)
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{
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g_measureCache.clear();
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}
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g_measureCache.emplace(key, extent);
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}
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return extent;
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}
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} // namespace
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void UiClearMeasureCache()
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{
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std::lock_guard<std::mutex> lock(g_measureMutex);
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g_measureCache.clear();
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}
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bool UiFonts::Create(UINT targetDpi)
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{
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Destroy();
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// 字体句柄会被重新创建,旧句柄可能被系统复用:必须作废按句柄缓存的文本宽度,
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// 否则复用同一句柄值的新字体会命中旧宽度(布局错位)。
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UiClearMeasureCache();
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dpi = (targetDpi == 0) ? 96u : targetDpi;
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const double scale = static_cast<double>(dpi) / 96.0;
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const int uiHeight = static_cast<int>(std::lround(14.0 * scale));
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const int smallHeight = static_cast<int>(std::lround(12.0 * scale));
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const int tinyHeight = static_cast<int>(std::lround(10.0 * scale));
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const int titleHeight = static_cast<int>(std::lround(15.0 * scale));
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const int monoHeight = static_cast<int>(std::lround(13.0 * scale));
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ui = CreateUiFont(L"Segoe UI", uiHeight, false);
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uiBold = CreateUiFont(L"Segoe UI Semibold", uiHeight, true);
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uiSmall = CreateUiFont(L"Segoe UI", smallHeight, false);
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uiSmallBold = CreateUiFont(L"Segoe UI Semibold", smallHeight, true);
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uiTiny = CreateUiFont(L"Segoe UI", tinyHeight, false);
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title = CreateUiFont(L"Segoe UI Semibold", titleHeight, true);
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mono = CreateUiFont(L"Consolas", monoHeight, false);
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monoSmall = CreateUiFont(L"Consolas", smallHeight, false);
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return ui != nullptr && uiBold != nullptr && uiSmall != nullptr && uiTiny != nullptr &&
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title != nullptr && mono != nullptr;
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}
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void UiFonts::Destroy()
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{
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const HFONT resources[] = {ui, uiBold, uiSmall, uiSmallBold, uiTiny, title, mono, monoSmall};
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for (const HFONT font : resources)
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{
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if (font != nullptr)
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{
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DeleteObject(font);
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}
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}
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ui = nullptr;
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uiBold = nullptr;
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uiSmall = nullptr;
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uiSmallBold = nullptr;
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uiTiny = nullptr;
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title = nullptr;
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mono = nullptr;
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monoSmall = nullptr;
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}
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void UiFillRect(gd::Graphics& g, const gd::RectF& rect, std::uint32_t argb)
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{
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if (rect.Width <= 0.0f || rect.Height <= 0.0f)
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{
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return;
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}
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// 大面积且**不透明**的填充走 GDI 路线:GDI+ 的 FillRectangle 实测约 2.2ns/像素
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// (整个窗口背景 1.7M 像素约 0.9ms,信号面板背景约 1.9ms),
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// 而 GDI 的 FillRect 快一个数量级。半透明填充必须留在 GDI+(GDI 不做 alpha 混色)。
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// 顺序安全:GetHDC() 会先把已排队的 GDI+ 内容刷入 DC,本次填充之后再发生的 GDI+ 绘制
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// 会在 ReleaseHDC() 之后刷出、正确地覆盖在上面。
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const float area = rect.Width * rect.Height;
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if ((argb & 0xFF000000u) == 0xFF000000u && area >= kGdiFillAreaThreshold)
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{
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HDC hdc = g.GetHDC();
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if (hdc != nullptr)
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{
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RECT rc;
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rc.left = static_cast<LONG>(std::floor(rect.X));
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rc.top = static_cast<LONG>(std::floor(rect.Y));
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rc.right = static_cast<LONG>(std::ceil(rect.X + rect.Width));
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rc.bottom = static_cast<LONG>(std::ceil(rect.Y + rect.Height));
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HBRUSH brush = CreateSolidBrush(ToColorRef(argb));
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if (brush != nullptr)
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{
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FillRect(hdc, &rc, brush);
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DeleteObject(brush);
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}
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g.ReleaseHDC(hdc);
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return;
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}
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}
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gd::SolidBrush brush(ToGdiColor(argb));
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g.FillRectangle(&brush, rect);
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}
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void UiFillRoundRect(gd::Graphics& g, const gd::RectF& rect, float radius, std::uint32_t argb)
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{
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if (rect.Width <= 0.0f || rect.Height <= 0.0f)
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{
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return;
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}
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gd::GraphicsPath path;
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UiBuildRoundRectPath(path, rect, radius);
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gd::SolidBrush brush(ToGdiColor(argb));
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g.FillPath(&brush, &path);
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}
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void UiDrawRoundRect(gd::Graphics& g, const gd::RectF& rect, float radius, std::uint32_t argb, float width)
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{
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if (rect.Width <= 0.0f || rect.Height <= 0.0f)
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{
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return;
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}
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gd::GraphicsPath path;
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UiBuildRoundRectPath(path, rect, radius);
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gd::Pen pen(ToGdiColor(argb), width);
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g.DrawPath(&pen, &path);
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}
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void UiFillRoundRects(gd::Graphics& g, const std::vector<gd::RectF>& rects, float radius,
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std::uint32_t argb)
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{
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if (rects.empty())
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{
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return;
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}
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gd::GraphicsPath path;
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for (const gd::RectF& rect : rects)
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{
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if (rect.Width <= 0.0f || rect.Height <= 0.0f)
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{
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continue;
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}
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UiBuildRoundRectPath(path, rect, radius);
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}
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if (path.GetPointCount() > 0)
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{
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gd::SolidBrush brush(ToGdiColor(argb));
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g.FillPath(&brush, &path);
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}
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}
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std::uint32_t UiBlendOver(std::uint32_t background, std::uint32_t argb)
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{
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const unsigned int alpha = (argb >> 24) & 0xFFu;
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if (alpha >= 0xFFu)
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{
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return argb | 0xFF000000u;
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}
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if (alpha == 0u)
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{
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return background | 0xFF000000u;
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}
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const double ratio = static_cast<double>(alpha) / 255.0;
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std::uint32_t result = 0xFF000000u;
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for (int shift = 0; shift <= 16; shift += 8)
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{
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const double top = static_cast<double>((argb >> shift) & 0xFFu);
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const double bottom = static_cast<double>((background >> shift) & 0xFFu);
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const double mixed = bottom + (top - bottom) * ratio;
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result |= (static_cast<std::uint32_t>(mixed + 0.5) & 0xFFu) << shift;
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}
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return result;
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}
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void UiDrawSolidLines(gd::Graphics& g, const gd::RectF& clip, const float* segments,
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std::size_t segmentCount, std::uint32_t argb, int width)
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{
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if (segments == nullptr || segmentCount == 0 || (argb & 0xFF000000u) != 0xFF000000u)
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{
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return;
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}
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if (width < 1)
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{
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width = 1;
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}
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const int clipLeft = static_cast<int>(std::floor(clip.X));
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const int clipTop = static_cast<int>(std::floor(clip.Y));
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const int clipRight = static_cast<int>(std::ceil(clip.X + clip.Width));
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const int clipBottom = static_cast<int>(std::ceil(clip.Y + clip.Height));
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if (clipRight <= clipLeft || clipBottom <= clipTop)
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{
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return;
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}
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HDC hdc = g.GetHDC();
|
||
if (hdc == nullptr)
|
||
{
|
||
return;
|
||
}
|
||
|
||
// GDI 绘制不受 GDI+ 裁剪约束,这里显式设置并随后完整还原 DC 状态。
|
||
const int saved = SaveDC(hdc);
|
||
if (saved != 0)
|
||
{
|
||
IntersectClipRect(hdc, clipLeft, clipTop, clipRight, clipBottom);
|
||
}
|
||
|
||
HPEN pen = CreatePen(PS_SOLID, width, ToColorRef(argb));
|
||
if (pen != nullptr)
|
||
{
|
||
HGDIOBJ oldPen = SelectObject(hdc, pen);
|
||
for (std::size_t index = 0; index < segmentCount; ++index)
|
||
{
|
||
const float* segment = segments + index * 4;
|
||
MoveToEx(hdc, static_cast<int>(std::lround(segment[0])),
|
||
static_cast<int>(std::lround(segment[1])), nullptr);
|
||
LineTo(hdc, static_cast<int>(std::lround(segment[2])),
|
||
static_cast<int>(std::lround(segment[3])));
|
||
}
|
||
SelectObject(hdc, oldPen);
|
||
DeleteObject(pen);
|
||
}
|
||
|
||
if (saved != 0)
|
||
{
|
||
RestoreDC(hdc, saved);
|
||
}
|
||
g.ReleaseHDC(hdc);
|
||
}
|
||
|
||
void UiDrawLine(gd::Graphics& g, float x1, float y1, float x2, float y2, std::uint32_t argb, float width)
|
||
{
|
||
gd::Pen pen(ToGdiColor(argb), width);
|
||
pen.SetStartCap(gd::LineCapFlat);
|
||
pen.SetEndCap(gd::LineCapFlat);
|
||
g.DrawLine(&pen, x1, y1, x2, y2);
|
||
}
|
||
|
||
namespace
|
||
{
|
||
/**
|
||
* @brief `UiText` 与 `UiTextClipped` 的公共实现。
|
||
*
|
||
* ⚠️ `clip == nullptr` 时**不加任何 GDI 裁剪**(与历史行为完全一致);
|
||
* 提供裁剪时在同一个 HDC 上 `SaveDC`/`IntersectClipRect` 并完整还原 ——
|
||
* 这是唯一能让 `DrawTextW` 受限于指定范围的办法(GDI+ 的 `SetClip` 对 GDI 文本无效)。
|
||
*
|
||
* @param [IN,OUT] g 绘图上下文。
|
||
* @param [IN] text 文本内容。
|
||
* @param [IN] font 字体句柄。
|
||
* @param [IN] rect 文本布局矩形。
|
||
* @param [IN] argb 文本颜色。
|
||
* @param [IN] align 水平对齐方式。
|
||
* @param [IN] clip 裁剪矩形(nullptr = 不裁剪)。
|
||
*/
|
||
void DrawUiText(gd::Graphics& g, const std::wstring& text, HFONT font, const gd::RectF& rect,
|
||
std::uint32_t argb, TextAlign align, const gd::RectF* clip)
|
||
{
|
||
if (text.empty() || font == nullptr || rect.Width <= 0.0f || rect.Height <= 0.0f)
|
||
{
|
||
return;
|
||
}
|
||
if (clip != nullptr && (clip->Width <= 0.0f || clip->Height <= 0.0f))
|
||
{
|
||
return; // 裁剪区为空:任何文字都落在界外
|
||
}
|
||
|
||
HDC hdc = g.GetHDC();
|
||
if (hdc == nullptr)
|
||
{
|
||
return;
|
||
}
|
||
|
||
// GDI 文本不受 GDI+ 裁剪区约束:需要限制范围时显式裁剪,结束前完整还原 DC 状态。
|
||
int saved = 0;
|
||
if (clip != nullptr)
|
||
{
|
||
saved = SaveDC(hdc);
|
||
if (saved != 0)
|
||
{
|
||
IntersectClipRect(hdc, static_cast<int>(std::floor(clip->X)),
|
||
static_cast<int>(std::floor(clip->Y)),
|
||
static_cast<int>(std::ceil(clip->X + clip->Width)),
|
||
static_cast<int>(std::ceil(clip->Y + clip->Height)));
|
||
}
|
||
}
|
||
|
||
HGDIOBJ oldFont = SelectObject(hdc, font);
|
||
const int oldMode = SetBkMode(hdc, TRANSPARENT);
|
||
const COLORREF oldColor = SetTextColor(hdc, ToColorRef(argb));
|
||
|
||
RECT rc;
|
||
rc.left = static_cast<LONG>(std::floor(rect.X));
|
||
rc.top = static_cast<LONG>(std::floor(rect.Y));
|
||
rc.right = static_cast<LONG>(std::ceil(rect.X + rect.Width));
|
||
rc.bottom = static_cast<LONG>(std::ceil(rect.Y + rect.Height));
|
||
|
||
// ⚠️ 这里必须继续用 `DrawTextW`:试过改用 `ExtTextOutW` 的"快速路径"(约快 2~4 倍),
|
||
// 但同一段文字的**光栅化结果并不相同**(实测面板区域 10% 的像素有差异,
|
||
// 亚像素边缘与基线差 1px)—— 全体界面文字观感都会变,因此放弃。
|
||
// 列表卡顿改由"行位图缓存 + 动画期间不预热网格图层"解决(见 `SignalPanel::PaintRowCached`)。
|
||
UINT flags = DT_SINGLELINE | DT_VCENTER | DT_NOPREFIX | DT_END_ELLIPSIS;
|
||
switch (align)
|
||
{
|
||
case TextAlign::CENTER:
|
||
flags |= DT_CENTER;
|
||
break;
|
||
case TextAlign::RIGHT:
|
||
flags |= DT_RIGHT;
|
||
break;
|
||
case TextAlign::LEFT:
|
||
default:
|
||
flags |= DT_LEFT;
|
||
break;
|
||
}
|
||
|
||
DrawTextW(hdc, text.c_str(), static_cast<int>(text.size()), &rc, flags);
|
||
|
||
SetTextColor(hdc, oldColor);
|
||
SetBkMode(hdc, oldMode);
|
||
SelectObject(hdc, oldFont);
|
||
if (saved != 0)
|
||
{
|
||
RestoreDC(hdc, saved);
|
||
}
|
||
g.ReleaseHDC(hdc);
|
||
}
|
||
} // namespace
|
||
|
||
void UiText(gd::Graphics& g, const std::wstring& text, HFONT font, const gd::RectF& rect, std::uint32_t argb,
|
||
TextAlign align)
|
||
{
|
||
DrawUiText(g, text, font, rect, argb, align, nullptr);
|
||
}
|
||
|
||
void UiTextClipped(gd::Graphics& g, const std::wstring& text, HFONT font, const gd::RectF& rect,
|
||
std::uint32_t argb, TextAlign align, const gd::RectF& clipRect)
|
||
{
|
||
DrawUiText(g, text, font, rect, argb, align, &clipRect);
|
||
}
|
||
|
||
float UiMeasureTextWidth(HFONT font, const std::wstring& text)
|
||
{
|
||
// 记忆化(键 = 字体 + 文本,值 = 宽 / 高):布局代码每帧会把同一批字符串
|
||
// **重复测量成百上千次**,而 `GetTextExtentPoint32W` 单次约 10µs。
|
||
return MeasureText(font, text).width;
|
||
}
|
||
|
||
std::wstring UiEllipsize(const std::wstring& text, HFONT font, float maxWidth)
|
||
{
|
||
if (text.empty() || font == nullptr || maxWidth <= 0.0f)
|
||
{
|
||
return std::wstring();
|
||
}
|
||
if (UiMeasureTextWidth(font, text) <= maxWidth)
|
||
{
|
||
return text;
|
||
}
|
||
|
||
const std::wstring ellipsis = L"…";
|
||
const float ellipsisWidth = UiMeasureTextWidth(font, ellipsis);
|
||
if (ellipsisWidth > maxWidth)
|
||
{
|
||
return std::wstring();
|
||
}
|
||
|
||
std::wstring result = text;
|
||
while (!result.empty())
|
||
{
|
||
result.pop_back();
|
||
if (UiMeasureTextWidth(font, result) + ellipsisWidth <= maxWidth)
|
||
{
|
||
return result + ellipsis;
|
||
}
|
||
}
|
||
return ellipsis;
|
||
}
|
||
|
||
void UiTextAtClipped(gd::Graphics& g, const std::wstring& text, HFONT font, float x, const gd::RectF& rect,
|
||
std::uint32_t argb, const gd::RectF& clipRect)
|
||
{
|
||
if (text.empty() || font == nullptr || clipRect.Width <= 0.0f || clipRect.Height <= 0.0f)
|
||
{
|
||
return;
|
||
}
|
||
|
||
HDC hdc = g.GetHDC();
|
||
if (hdc == nullptr)
|
||
{
|
||
return;
|
||
}
|
||
|
||
HGDIOBJ oldFont = SelectObject(hdc, font);
|
||
const int oldMode = SetBkMode(hdc, TRANSPARENT);
|
||
const COLORREF oldColor = SetTextColor(hdc, ToColorRef(argb));
|
||
|
||
TEXTMETRICW metrics = {};
|
||
GetTextMetricsW(hdc, &metrics);
|
||
const int baselineY = static_cast<int>(
|
||
std::floor(rect.Y + (rect.Height - static_cast<float>(metrics.tmHeight)) * 0.5f));
|
||
|
||
RECT clip = {};
|
||
clip.left = static_cast<LONG>(std::floor(clipRect.X));
|
||
clip.top = static_cast<LONG>(std::floor(clipRect.Y));
|
||
clip.right = static_cast<LONG>(std::ceil(clipRect.X + clipRect.Width));
|
||
clip.bottom = static_cast<LONG>(std::ceil(clipRect.Y + clipRect.Height));
|
||
|
||
// ETO_CLIPPED 让 GDI 在指定矩形内裁剪,长文本不会再画到输入框之外。
|
||
ExtTextOutW(hdc, static_cast<int>(std::floor(x)), baselineY, ETO_CLIPPED, &clip, text.c_str(),
|
||
static_cast<UINT>(text.size()), nullptr);
|
||
|
||
SetTextColor(hdc, oldColor);
|
||
SetBkMode(hdc, oldMode);
|
||
SelectObject(hdc, oldFont);
|
||
g.ReleaseHDC(hdc);
|
||
}
|
||
|
||
} // namespace jdi
|