egutierrez
a99aa661a2
- toast.cpp: TI_BELL en lugar de \xf0\x9f\x94\x94 (fuera del rango cargado por icon_font, renderizaba como ?) - candlestick.cpp: SetupAxes/SetupAxisScale/SetupAxisLimits movidos dentro de BeginPlot/EndPlot — antes el plot desaparecia al entrar - pie_chart.cpp: SetupLegend(East, Outside, NoButtons), eliminado NoLegend - kpi_card.cpp: layout 2 cols con sparkline a la derecha centrado verticalmente
85 lines
3.4 KiB
C++
85 lines
3.4 KiB
C++
#include "viz/candlestick.h"
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#include "imgui.h"
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#include "implot.h"
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void candlestick(const char* title, const double* dates, const double* opens,
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const double* closes, const double* lows, const double* highs,
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int count, float width_percent, bool tooltip) {
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if (count <= 0) return;
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// Compute half-width of each candle body in data coordinates.
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// Use spacing between consecutive dates when count > 1, else fallback to 0.5.
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double spacing = (count > 1) ? (dates[1] - dates[0]) : 1.0;
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double half_w = spacing * (double)width_percent * 0.5;
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if (ImPlot::BeginPlot(title, ImVec2(-1, 0))) {
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// ImPlot Setup* calls DEBEN ir dentro de BeginPlot/EndPlot. Antes
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// estaban fuera y dejaban el plot sin ejes, lo que hacia que el demo
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// de candlestick "desapareciera" al entrar en la galeria.
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ImPlot::SetupAxes("Date", "Price",
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ImPlotAxisFlags_None,
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ImPlotAxisFlags_AutoFit);
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ImPlot::SetupAxisScale(ImAxis_X1, ImPlotScale_Time);
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ImPlot::SetupAxisLimits(ImAxis_X1,
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dates[0] - spacing,
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dates[count - 1] + spacing,
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ImGuiCond_Always);
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ImDrawList* draw = ImPlot::GetPlotDrawList();
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const ImU32 col_bull = IM_COL32(0, 200, 80, 255); // green — close >= open
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const ImU32 col_bear = IM_COL32(220, 50, 50, 255); // red — close < open
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int hovered_idx = -1;
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for (int i = 0; i < count; i++) {
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double x = dates[i];
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double open = opens[i];
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double close = closes[i];
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double low = lows[i];
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double high = highs[i];
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bool bullish = (close >= open);
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ImU32 col = bullish ? col_bull : col_bear;
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// Convert data coordinates to screen pixels.
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ImVec2 body_tl = ImPlot::PlotToPixels(x - half_w, bullish ? close : open);
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ImVec2 body_br = ImPlot::PlotToPixels(x + half_w, bullish ? open : close);
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ImVec2 wick_hi = ImPlot::PlotToPixels(x, high);
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ImVec2 wick_lo = ImPlot::PlotToPixels(x, low);
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float cx = (body_tl.x + body_br.x) * 0.5f;
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// Wick (high-low vertical line).
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draw->AddLine(ImVec2(cx, wick_hi.y), ImVec2(cx, wick_lo.y), col, 1.5f);
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// Body rectangle (open-close).
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// Ensure at least 1px height so flat candles are visible.
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if (body_br.y <= body_tl.y + 1.0f) body_br.y = body_tl.y + 1.0f;
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draw->AddRectFilled(body_tl, body_br, col);
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draw->AddRect(body_tl, body_br, col);
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// Track hovered candle for tooltip.
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if (tooltip && ImPlot::IsPlotHovered()) {
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ImVec2 mouse = ImGui::GetMousePos();
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if (mouse.x >= body_tl.x - 4 && mouse.x <= body_br.x + 4 &&
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mouse.y >= wick_hi.y - 4 && mouse.y <= wick_lo.y + 4) {
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hovered_idx = i;
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}
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}
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}
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// Tooltip for the hovered candle.
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if (tooltip && hovered_idx >= 0) {
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int i = hovered_idx;
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ImGui::BeginTooltip();
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ImGui::Text("O: %.4f", opens[i]);
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ImGui::Text("H: %.4f", highs[i]);
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ImGui::Text("L: %.4f", lows[i]);
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ImGui::Text("C: %.4f", closes[i]);
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ImGui::EndTooltip();
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}
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ImPlot::EndPlot();
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}
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}
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