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21d746e858
From CppCoreGuidelines: Rule of Zero: C.20: If you can avoid defining default operations, do. C.52: Use inheriting constructors to import constructors into a derived class that does not need further explicit initialization. DRY forward and using declarations. Miscellaneous: Fix format.sh to output examples with normalised paths in sorted order. Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>
67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
#include <functional> // for function
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#include <memory> // for make_shared
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#include <vector> // for vector
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#include "ftxui/dom/elements.hpp" // for GraphFunction, Element, graph
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#include "ftxui/dom/node.hpp" // for Node
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#include "ftxui/dom/requirement.hpp" // for Requirement
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#include "ftxui/screen/box.hpp" // for Box
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#include "ftxui/screen/screen.hpp" // for Screen
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namespace ftxui {
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// Microsoft's terminals often use fonts not handling the 8 unicode characters
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// for representing the whole gauge. Fallback with less.
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#if defined(FTXUI_MICROSOFT_TERMINAL_FALLBACK)
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const wchar_t charset[] = L" █ █████";
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#else
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const wchar_t charset[] = L" ▗▐▖▄▟▌▙█";
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#endif
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class Graph : public Node {
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public:
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Graph(GraphFunction graph_function) : graph_function_(graph_function) {}
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void ComputeRequirement() override {
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requirement_.flex_grow_x = 1;
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requirement_.flex_grow_y = 1;
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requirement_.flex_shrink_x = 1;
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requirement_.flex_shrink_y = 1;
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requirement_.min_x = 3;
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requirement_.min_y = 3;
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}
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void Render(Screen& screen) override {
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int width = (box_.x_max - box_.x_min + 1) * 2;
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int height = (box_.y_max - box_.y_min + 1) * 2;
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auto data = graph_function_(width, height);
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int i = 0;
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for (int x = box_.x_min; x <= box_.x_max; ++x) {
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int height_1 = 2 * box_.y_max - data[i++];
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int height_2 = 2 * box_.y_max - data[i++];
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for (int y = box_.y_min; y <= box_.y_max; ++y) {
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int yy = 2 * y;
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int i_1 = yy < height_1 ? 0 : yy == height_1 ? 3 : 6;
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int i_2 = yy < height_2 ? 0 : yy == height_2 ? 1 : 2;
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wchar_t pix = charset[i_1 + i_2];
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screen.at(x, y) = pix;
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}
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}
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}
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private:
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GraphFunction graph_function_;
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};
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/// @brief Draw a graph using a GraphFunction.
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/// @param graph_function the function to be called to get the data.
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Element graph(GraphFunction graph_function) {
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return std::make_shared<Graph>(graph_function);
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}
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} // namespace ftxui
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// Copyright 2020 Arthur Sonzogni. All rights reserved.
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// Use of this source code is governed by the MIT license that can be found in
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// the LICENSE file.
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