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improved formatting and positioning of cursor labels

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This commit is contained in:
Erik Bročko
2026-03-25 21:32:29 +01:00
parent c9b6b8d83d
commit a1b769336e
3 changed files with 38 additions and 55 deletions
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25
src/ui/Cursors.cpp
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@@ -97,7 +97,8 @@ void Cursors::draw(const SpectrumDisplay& specDisplay,
formatLabel(buf, sizeof(buf), label, c.freq, dispDB);
ImVec2 sz = ImGui::CalcTextSize(buf);
float lineH = ImGui::GetTextLineHeight();
float ty = posY + 4 + row * (lineH + 4);
// draw starting from the second line -- on the first line, we have cursor data
float ty = posY + 4 + (row + 1) * (lineH + 4);
// Place right of cursor line; flip left if it would overflow.
float tx;
@@ -118,25 +119,15 @@ void Cursors::draw(const SpectrumDisplay& specDisplay,
if (showDelta && cursorA.active && cursorB.active) {
double dFreq = cursorB.freq - cursorA.freq;
float dDB = bDB - aDB;
char val1[48], val2[48];
fmtFreq(val1, sizeof(val1), dFreq);
std::snprintf(val2, sizeof(val2), "%.1f dB", dDB);
char deltaBuf[128];
fmtFreqDB(deltaBuf, sizeof(deltaBuf), "D", dFreq, dDB);
ImVec2 labelSz = ImGui::CalcTextSize("dF = ");
ImVec2 v1Sz = ImGui::CalcTextSize(val1);
ImVec2 v2Sz = ImGui::CalcTextSize(val2);
float valW = std::max(v1Sz.x, v2Sz.x);
float lineH = labelSz.y;
float totalW = labelSz.x + valW;
float tx = posX + sizeX - totalW - 158;
ImVec2 dSz = ImGui::CalcTextSize(deltaBuf);
float tx = posX + sizeX - dSz.x - 178;
float lineH = ImGui::GetTextLineHeight();
float ty = posY + 4;
ImU32 col = IM_COL32(255, 200, 100, 255);
float eqX = tx + labelSz.x; // values start here (right of '= ')
dl->AddText({tx, ty}, col, "dF =");
dl->AddText({eqX + valW - v1Sz.x, ty}, col, val1);
dl->AddText({tx, ty + lineH + 2}, col, "dA =");
dl->AddText({eqX + valW - v2Sz.x, ty + lineH + 2}, col, val2);
dl->AddText({tx, ty}, col, deltaBuf);
}
// (Hover cursor line is drawn cross-panel by Application.)