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comparison include/gui/widgets/graph.h @ 171:03b444cbe55f

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graph: improve? drawing the text dark stylesheet: add borders on QMenu, taking inspiration from MPC-HC media: fix warning about missing enums
author Paper <mrpapersonic@gmail.com>
date Mon, 27 Nov 2023 13:51:27 -0500
parents b315f3759c56
children 45a0967485f1
comparison
equal deleted inserted replaced
170:c8375765f0fc 171:03b444cbe55f
13 #include <QPainterPath> 13 #include <QPainterPath>
14 #include <QPen> 14 #include <QPen>
15 #include <algorithm> 15 #include <algorithm>
16 #include <unordered_map> 16 #include <unordered_map>
17 17
18 template <typename T> 18 template<typename T>
19 class Graph final : public QWidget { 19 class Graph final : public QWidget {
20 public: 20 public:
21 Graph(QWidget* parent = nullptr) : QWidget(parent) {}; 21 Graph(QWidget* parent = nullptr) : QWidget(parent) {};
22 void AddItem(T key, unsigned long val) { map[key] = val; update(); updateGeometry(); }; 22 void AddItem(T key, unsigned long val) { map[key] = val; update(); updateGeometry(); };
23 void Clear() { map.clear(); update(); updateGeometry(); }; 23 void Clear() { map.clear(); update(); updateGeometry(); };
24 24
25 protected: 25 protected:
26 static constexpr int SPACING = 5; 26 static constexpr int SPACING = 5;
27
28 std::unordered_map<T, unsigned long> map = {};
29
30 QSize minimumSizeHint() const override {
31 QFontMetrics metric(font());
32 /* wtf?... */
33 return QSize(100, metric.height() * map.size() + (2 * (map.size() - 2)));
34 }
35
36 /* helper functions */
27 inline unsigned long GetTotal() { 37 inline unsigned long GetTotal() {
28 unsigned long count = 0; 38 unsigned long count = 0;
39
29 for (const auto& item : map) 40 for (const auto& item : map)
30 count += item.second; 41 count += item.second;
42
31 return count; 43 return count;
32 } 44 }
33 QSize minimumSizeHint() const override { 45
34 QFontMetrics metric(font());
35 return QSize(100, metric.height() * map.size() + 2 * (map.size() - 2));
36 };
37 inline unsigned long GetTextWidth() { 46 inline unsigned long GetTextWidth() {
38 unsigned long ret = 0; 47 unsigned long ret = 0;
39 QFontMetrics metric(font()); 48 QFontMetrics metric(font());
49
40 for (const auto& item : map) { 50 for (const auto& item : map) {
41 unsigned long width = metric.boundingRect(QString::number(item.first)).width(); 51 unsigned long width = metric.boundingRect(QString::number(item.first)).width();
42 if (width > ret) 52 if (width > ret)
43 ret = width; 53 ret = width;
44 } 54 }
55
45 return ret; 56 return ret;
46 } 57 }
58
47 void paintEvent(QPaintEvent* event) override { 59 void paintEvent(QPaintEvent* event) override {
48 const QRect rect = event->rect(); 60 const QRect rect = event->rect();
49 const int height_of_each = QFontMetrics(font()).height(); 61 const int height_of_each = QFontMetrics(font()).height();
50 const int size = GetTotal(); 62 const int size = GetTotal();
51 const int text_width = GetTextWidth(); 63 const int text_width = GetTextWidth();
52 int current_y = rect.y(); 64 const int x = rect.x();
65 int y = rect.y();
53 66
54 /* now we do the actual painting */ 67 /* now we do the actual painting */
55 QPainter painter(this); 68 QPainter painter(this);
56 69
57 for (const auto& item : map) { 70 for (const auto& item : map) {
58 painter.drawText(QRect(rect.x(), current_y, text_width, height_of_each), Qt::AlignRight | Qt::AlignVCenter, QString::number(item.first)); 71 painter.drawText(QRect(x + 2, y, text_width - 2, height_of_each), Qt::AlignRight | Qt::AlignVCenter, QString::number(item.first));
59 72
60 if (size) { 73 if (size) {
61 painter.save(); 74 painter.save();
62 75
63 QPen pen(Qt::transparent, 0); 76 QPen pen(Qt::transparent, 0);
64 painter.setPen(pen); 77 painter.setPen(pen);
65 78
66 QPainterPath path; 79 QPainterPath path;
67 path.addRect(rect.x() + text_width + SPACING, current_y, (static_cast<double>(item.second)/size)*(rect.width() - text_width - SPACING), height_of_each); 80 path.addRect(x + text_width + 2 + SPACING, y, (static_cast<double>(item.second)/size) * (rect.width() - text_width + 2 - SPACING), height_of_each);
68 painter.fillPath(path, Qt::darkBlue); 81 painter.fillPath(path, Qt::darkBlue);
69 painter.drawPath(path); 82 painter.drawPath(path);
70 83
71 painter.restore(); 84 painter.restore();
72 } 85 }
73 current_y += height_of_each + 2; 86
87 y += height_of_each + 2;
74 } 88 }
75 }; 89 }
76 std::unordered_map<T, unsigned long> map = {};
77 }; 90 };
78 91
79 #endif // __gui__widgets__graph_h 92 #endif // __gui__widgets__graph_h