Mercurial > minori
annotate include/gui/widgets/graph.h @ 137:69db40272acd
dep/animia: [WIP] huge refactor
this WILL NOT compile, because lots of code has been changed
and every API in the original codebase has been removed.
note that this api setup is not exactly permanent...
| author | Paper <mrpapersonic@gmail.com> |
|---|---|
| date | Fri, 10 Nov 2023 13:52:47 -0500 |
| parents | b315f3759c56 |
| children | 03b444cbe55f |
| rev | line source |
|---|---|
| 93 | 1 #ifndef __gui__widgets__graph_h |
| 2 #define __gui__widgets__graph_h | |
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4 /* This class is defined as a template, so that means everything gets defined here as well :) */ |
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| 93 | 6 #include <QWidget> |
| 102 | 7 #include <QDebug> |
| 93 | 8 #include <QSize> |
| 9 #include <QPaintEvent> | |
| 10 #include <QSize> | |
| 11 #include <QRect> | |
| 12 #include <QPainter> | |
| 13 #include <QPainterPath> | |
| 14 #include <QPen> | |
| 102 | 15 #include <algorithm> |
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16 #include <unordered_map> |
| 93 | 17 |
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18 template <typename T> |
| 93 | 19 class Graph final : public QWidget { |
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20 public: |
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21 Graph(QWidget* parent = nullptr) : QWidget(parent) {}; |
| 102 | 22 void AddItem(T key, unsigned long val) { map[key] = val; update(); updateGeometry(); }; |
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23 void Clear() { map.clear(); update(); updateGeometry(); }; |
| 93 | 24 |
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25 protected: |
| 102 | 26 static constexpr int SPACING = 5; |
| 27 inline unsigned long GetTotal() { | |
| 28 unsigned long count = 0; | |
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29 for (const auto& item : map) |
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30 count += item.second; |
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31 return count; |
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32 } |
| 102 | 33 QSize minimumSizeHint() const override { |
| 34 QFontMetrics metric(font()); | |
| 35 return QSize(100, metric.height() * map.size() + 2 * (map.size() - 2)); | |
| 36 }; | |
| 37 inline unsigned long GetTextWidth() { | |
| 38 unsigned long ret = 0; | |
| 39 QFontMetrics metric(font()); | |
| 40 for (const auto& item : map) { | |
| 41 unsigned long width = metric.boundingRect(QString::number(item.first)).width(); | |
| 42 if (width > ret) | |
| 43 ret = width; | |
| 44 } | |
| 45 return ret; | |
| 46 } | |
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47 void paintEvent(QPaintEvent* event) override { |
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48 const QRect rect = event->rect(); |
| 102 | 49 const int height_of_each = QFontMetrics(font()).height(); |
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50 const int size = GetTotal(); |
| 102 | 51 const int text_width = GetTextWidth(); |
| 52 int current_y = rect.y(); | |
| 93 | 53 |
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54 /* now we do the actual painting */ |
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55 QPainter painter(this); |
| 93 | 56 |
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57 for (const auto& item : map) { |
| 102 | 58 painter.drawText(QRect(rect.x(), current_y, text_width, height_of_each), Qt::AlignRight | Qt::AlignVCenter, QString::number(item.first)); |
| 93 | 59 |
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60 if (size) { |
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61 painter.save(); |
| 93 | 62 |
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63 QPen pen(Qt::transparent, 0); |
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64 painter.setPen(pen); |
| 93 | 65 |
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66 QPainterPath path; |
| 102 | 67 path.addRect(rect.x() + text_width + SPACING, current_y, (static_cast<double>(item.second)/size)*(rect.width() - text_width - SPACING), height_of_each); |
| 68 painter.fillPath(path, Qt::darkBlue); | |
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69 painter.drawPath(path); |
| 93 | 70 |
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71 painter.restore(); |
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72 } |
| 102 | 73 current_y += height_of_each + 2; |
| 93 | 74 } |
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75 }; |
| 102 | 76 std::unordered_map<T, unsigned long> map = {}; |
| 93 | 77 }; |
| 78 | |
| 79 #endif // __gui__widgets__graph_h |