Mercurial > minori
annotate include/gui/widgets/graph.h @ 94:2f373d48f889
*: etc changes to graph stuff
| author | Paper <mrpapersonic@gmail.com> |
|---|---|
| date | Wed, 01 Nov 2023 14:30:26 -0400 |
| parents | d5efb81540b3 |
| children | bd68e4393e6f |
| rev | line source |
|---|---|
| 93 | 1 #ifndef __gui__widgets__graph_h |
| 2 #define __gui__widgets__graph_h | |
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3 |
| 93 | 4 #include <QWidget> |
| 5 #include <QSize> | |
| 6 #include <QPaintEvent> | |
| 7 #include <QSize> | |
| 8 #include <QRect> | |
| 9 #include <QPainter> | |
| 10 #include <QPainterPath> | |
| 11 #include <QPen> | |
| 12 | |
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13 template <typename T> |
| 93 | 14 class Graph final : public QWidget { |
| 15 public: | |
| 16 Graph(QWidget* parent = nullptr) : QWidget(parent) {}; | |
| 17 void AddItem(T key, int val) { map[key] = val; update(); updateGeometry(); }; | |
| 18 void Clear() { map.clear(); update(); updateGeometry(); }; | |
| 19 | |
| 20 protected: | |
| 21 static constexpr int ITEM_HEIGHT = 20; | |
| 22 static constexpr int TEXT_WIDTH = 30; | |
| 23 inline int GetTotal() { | |
| 24 int count = 0; | |
| 25 for (const auto& item : map) | |
| 26 count += item.second; | |
| 27 return count; | |
| 28 } | |
| 29 QSize minimumSizeHint() const override { return QSize(100, ITEM_HEIGHT * map.size()); }; | |
| 30 void paintEvent(QPaintEvent* event) override { | |
| 31 const QRect rect = event->rect(); | |
| 32 const int height_of_each = rect.height() / map.size(); | |
| 33 const int size = GetTotal(); | |
| 34 | |
| 35 /* now we do the actual painting */ | |
| 36 QPainter painter(this); | |
| 37 | |
| 38 int i = 0; | |
| 39 for (const auto& item : map) { | |
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40 painter.drawText(QRect(rect.x(), rect.y() + i * ITEM_HEIGHT, TEXT_WIDTH, ITEM_HEIGHT), Qt::AlignRight | Qt::AlignVCenter, QString::number(item.first)); |
| 93 | 41 |
| 42 if (size) { | |
| 43 painter.save(); | |
| 44 | |
| 45 QPen pen(Qt::transparent, 0); | |
| 46 painter.setPen(pen); | |
| 47 | |
| 48 QPainterPath path; | |
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49 path.addRect(rect.x()+35, rect.y() + i * ITEM_HEIGHT, (static_cast<double>(item.second)/size)*(rect.width()-35), ITEM_HEIGHT); |
| 93 | 50 painter.fillPath(path, Qt::blue); |
| 51 painter.drawPath(path); | |
| 52 | |
| 53 painter.restore(); | |
| 54 } | |
| 55 i++; | |
| 56 } | |
| 57 }; | |
| 58 std::unordered_map<T, int> map = {}; | |
| 59 }; | |
| 60 | |
| 61 #endif // __gui__widgets__graph_h |