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83 lines
1.9 KiB
C++
83 lines
1.9 KiB
C++
#include "logview.h"
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LogView::LogView()
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{
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Clear();
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}
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void LogView::Clear()
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{
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Buf.clear();
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LineOffsets.clear();
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LineOffsets.push_back(0);
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updated = false;
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}
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void LogView::AddLog(const std::string& str)
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{
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AddLog(str.c_str());
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}
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void LogView::AddLog(const char* fmt, ...)
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{
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int old_size = Buf.size();
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va_list args;
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va_start(args, fmt);
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Buf.appendfv(fmt, args);
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Buf.appendfv("\n", args);
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va_end(args);
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for (int new_size = Buf.size(); old_size < new_size; old_size++)
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if (Buf[old_size] == '\n')
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LineOffsets.push_back(old_size + 1);
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updated = true;
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}
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void LogView::Draw(const char* title, bool* p_open, ImGuiWindowFlags flags)
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{
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if (!ImGui::Begin(title, p_open, flags))
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{
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ImGui::End();
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return;
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}
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ImGui::Text("Log ");
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ImGui::SameLine(ImGui::GetWindowWidth() - 120);
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if (ImGui::Button("Clear"))
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Clear();
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ImGui::SameLine();
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if (ImGui::Button("Copy"))
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ImGui::LogToClipboard();
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ImGui::Separator();
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ImGui::BeginChild("scrolling", ImVec2(0, 0), false, ImGuiWindowFlags_HorizontalScrollbar);
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ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(0, 0));
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const char* buf = Buf.begin();
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const char* buf_end = Buf.end();
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ImGuiListClipper clipper;
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clipper.Begin(LineOffsets.Size);
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while (clipper.Step())
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{
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for (int line_no = clipper.DisplayStart; line_no < clipper.DisplayEnd; line_no++)
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{
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const char* line_start = buf + LineOffsets[line_no];
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const char* line_end = (line_no + 1 < LineOffsets.Size) ? (buf + LineOffsets[line_no + 1] - 1) : buf_end;
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ImGui::TextUnformatted(line_start, line_end);
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}
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}
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clipper.End();
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ImGui::PopStyleVar();
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if (updated) {
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ImGui::SetScrollHereY();
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updated = false;
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}
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ImGui::EndChild();
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ImGui::End();
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}
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