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processui/ksysguardprocesslist.cpp
| Show First 20 Lines • Show All 75 Lines • ▼ Show 20 Line(s) | 74 | public: | |||
|---|---|---|---|---|---|
| 76 | } | 76 | } | ||
| 77 | 77 | | |||
| 78 | virtual void paint(QPainter *painter, const QStyleOptionViewItem &opt, const QModelIndex &index) const | 78 | virtual void paint(QPainter *painter, const QStyleOptionViewItem &opt, const QModelIndex &index) const | ||
| 79 | { | 79 | { | ||
| 80 | QStyleOptionViewItemV4 option = opt; | 80 | QStyleOptionViewItemV4 option = opt; | ||
| 81 | initStyleOption(&option,index); | 81 | initStyleOption(&option,index); | ||
| 82 | 82 | | |||
| 83 | float percentage = index.data(ProcessModel::PercentageRole).toFloat(); | 83 | float percentage = index.data(ProcessModel::PercentageRole).toFloat(); | ||
| 84 | if (percentage >= 0) | 84 | auto history = index.data(ProcessModel::PercentageHistoryRole).value<QVector<ProcessModel::PercentageHistoryEntry>>(); | ||
| 85 | drawPercentageDisplay(painter,option, percentage); | 85 | if (percentage >= 0 || history.size() > 1) | ||
| 86 | drawPercentageDisplay(painter, option, percentage, history); | ||||
| 86 | else | 87 | else | ||
| 87 | QStyledItemDelegate::paint(painter, option, index); | 88 | QStyledItemDelegate::paint(painter, option, index); | ||
| 88 | } | 89 | } | ||
| 89 | 90 | | |||
| 90 | private: | 91 | private: | ||
| 91 | inline void drawPercentageDisplay(QPainter *painter, QStyleOptionViewItemV4 &option, float percentage) const | 92 | inline void drawPercentageDisplay(QPainter *painter, QStyleOptionViewItemV4 &option, float percentage, const QVector<ProcessModel::PercentageHistoryEntry> &history) const | ||
| 92 | { | 93 | { | ||
| 93 | QStyle *style = option.widget ? option.widget->style() : QApplication::style(); | 94 | QStyle *style = option.widget ? option.widget->style() : QApplication::style(); | ||
| 95 | const QRect &rect = option.rect; | ||||
| 96 | | ||||
| 97 | const int HIST_MS_PER_PX = 100; // 100 ms = 1 px -> 1 s = 10 px | ||||
| 98 | bool hasHistory = history.size() > 1; | ||||
| 99 | // Make sure that more than one entry is visible | ||||
| 100 | if (hasHistory) { | ||||
| 101 | int width = (history.crbegin()->timestamp - (history.crbegin() + 1)->timestamp) / HIST_MS_PER_PX; | ||||
| 102 | hasHistory = width < rect.width(); | ||||
| 103 | } | ||||
| 94 | 104 | | |||
| 95 | // draw the background | 105 | // draw the background | ||
| 96 | style->drawPrimitive(QStyle::PE_PanelItemViewItem, &option, painter, option.widget); | 106 | style->drawPrimitive(QStyle::PE_PanelItemViewItem, &option, painter, option.widget); | ||
| 97 | 107 | | |||
| 98 | QPalette::ColorGroup cg = option.state & QStyle::State_Enabled | 108 | QPalette::ColorGroup cg = option.state & QStyle::State_Enabled | ||
| 99 | ? QPalette::Normal : QPalette::Disabled; | 109 | ? QPalette::Normal : QPalette::Disabled; | ||
| 100 | if (cg == QPalette::Normal && !(option.state & QStyle::State_Active)) | 110 | if (cg == QPalette::Normal && !(option.state & QStyle::State_Active)) | ||
| 101 | cg = QPalette::Inactive; | 111 | cg = QPalette::Inactive; | ||
| 102 | 112 | | |||
| 103 | //Now draw our percentage thingy | 113 | //Now draw our percentage thingy | ||
| 104 | const QRect &rect = option.rect; | 114 | int size = qMin(int(percentage * rect.height()), rect.height()); | ||
| 105 | int size = qMin(percentage,1.0f) * rect.width(); | | |||
| 106 | if(size > 2 ) { //make sure the line will have a width of more than 1 pixel | 115 | if(size > 2 ) { //make sure the line will have a width of more than 1 pixel | ||
| 107 | painter->setPen(Qt::NoPen); | 116 | painter->setPen(Qt::NoPen); | ||
| 108 | QColor color = option.palette.color(cg, QPalette::Link); | 117 | QColor color = option.palette.color(cg, QPalette::Link); | ||
| 118 | color.setAlpha(hasHistory ? 25 : 50); | ||||
| 119 | | ||||
| 120 | painter->fillRect( rect.x(), rect.y() + rect.height() - size, rect.width(), size, color); | ||||
| 121 | } | ||||
| 122 | | ||||
| 123 | // Draw the history graph | ||||
| 124 | if(hasHistory) | ||||
| 125 | { | ||||
| 126 | QColor color = option.palette.color(cg, QPalette::Link); | ||||
| 109 | color.setAlpha(50); | 127 | color.setAlpha(50); | ||
| 128 | painter->setPen(Qt::NoPen); | ||||
| 129 | | ||||
| 130 | QPainterPath path; | ||||
| 131 | // From right to left | ||||
| 132 | path.moveTo(rect.right(), rect.bottom()); | ||||
| 133 | | ||||
broulik: Coding style | |||||
| 134 | int xNow = rect.right(); | ||||
| 135 | auto now = history.constLast(); | ||||
| 136 | int height = qMin(int(rect.height() * now.value), rect.height()); | ||||
| 137 | path.lineTo(xNow, rect.bottom() - height); | ||||
| 138 | | ||||
| 139 | for(int index = history.size() - 2; index >= 0 && xNow > rect.left(); --index) { | ||||
| 140 | auto next = history.at(index); | ||||
| 141 | int width = (now.timestamp - next.timestamp) / HIST_MS_PER_PX; | ||||
| 142 | int xNext = qMax(xNow - width, rect.left()); | ||||
| 143 | | ||||
| 144 | now = next; | ||||
| 145 | xNow = xNext; | ||||
| 146 | int height = qMin(int(rect.height() * now.value), rect.height()); | ||||
| 147 | | ||||
| 148 | path.lineTo(xNow, rect.bottom() - height); | ||||
| 149 | } | ||||
| 150 | | ||||
| 151 | path.lineTo(xNow, rect.bottom()); | ||||
| 152 | path.lineTo(rect.right(), rect.bottom()); | ||||
| 110 | 153 | | |||
| 111 | painter->fillRect( rect.x(), rect.y(), size, rect.height(), color); | 154 | painter->fillPath(path, color); | ||
| 112 | } | 155 | } | ||
| 113 | 156 | | |||
| 114 | // draw the text | 157 | // draw the text | ||
| 115 | if (!option.text.isEmpty()) { | 158 | if (!option.text.isEmpty()) { | ||
| 116 | QRect textRect = style->subElementRect(QStyle::SE_ItemViewItemText, &option, option.widget); | 159 | QRect textRect = style->subElementRect(QStyle::SE_ItemViewItemText, &option, option.widget); | ||
| 117 | 160 | | |||
| 118 | 161 | | |||
| 119 | if (option.state & QStyle::State_Selected) { | 162 | if (option.state & QStyle::State_Selected) { | ||
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Coding style