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hide piechart labels when legend entry is hidden

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This commit is contained in:
Evan Pezent 2020-06-12 12:32:13 -05:00
parent 19d369816d
commit 7d02374665
1 changed files with 14 additions and 6 deletions
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8
implot.cpp
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@ -655,6 +655,11 @@ ImPlotItem* GetLegendItem(int i) {
return gp.CurrentPlot->Items.GetByIndex(gp.LegendIndices[i]);
}
ImPlotItem* GetLegendItem(const char* label_id) {
ImGuiID id = ImGui::GetID(label_id);
return gp.CurrentPlot->Items.GetByKey(id);
}
const char* GetLegendLabel(int i) {
ImPlotItem* item = gp.CurrentPlot->Items.GetByIndex(gp.LegendIndices[i]);
IM_ASSERT(item->NameOffset != -1 && item->NameOffset < gp.LegendLabels.Buf.Size);
@ -3041,14 +3046,17 @@ void PlotPieChartEx(const char** label_ids, const T* values, int count, T x, T y
a1 = angle0 * 2 * IM_PI / 360.0f;
char buffer[32];
for (int i = 0; i < count; ++i) {
ImPlotItem* item = GetLegendItem(label_ids[i]);
T percent = normalize ? values[i] / sum : values[i];
a1 = a0 + 2 * IM_PI * percent;
if (item->Show) {
sprintf(buffer, fmt, values[i]);
ImVec2 size = ImGui::CalcTextSize(buffer);
T angle = a0 + (a1 - a0) * 0.5f;
ImVec2 pos = PlotToPixels(center.x + 0.5f * radius * cos(angle), center.y + 0.5f * radius * sin(angle));
DrawList.AddText(pos - size * 0.5f + ImVec2(1,1), IM_COL32(0,0,0,255), buffer);
DrawList.AddText(pos - size * 0.5f, IM_COL32(255,255,255,255), buffer);
}
a0 = a1;
}
}