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ProcessManager: Draw the graphs as lines.

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This looks pretty neat. Also it exercises the diagonal line drawing code
so we get 2-for-1. :^)
This commit is contained in:
Andreas Kling 2019-05-07 17:11:48 +02:00
parent 5b2e122624
commit 1598a0a5cb
2 changed files with 9 additions and 4 deletions
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10
Applications/ProcessManager/GraphWidget.cpp
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@ -30,12 +30,16 @@ void GraphWidget::paint_event(GPaintEvent& event)
auto inner_rect = frame_inner_rect(); auto inner_rect = frame_inner_rect();
float scale = (float)inner_rect.height() / (float)m_max; float scale = (float)inner_rect.height() / (float)m_max;
Point prev_point;
for (int i = 0; i < m_values.size(); ++i) { for (int i = 0; i < m_values.size(); ++i) {
int x = inner_rect.right() - i + 1; int x = inner_rect.right() - (i * 2) + 1;
if (x < 0) if (x < 0)
break; break;
float scaled_value = (float)m_values.at(m_values.size() - i) * scale; float scaled_value = (float)m_values.at(m_values.size() - i - 1) * scale;
painter.draw_line({ x, inner_rect.bottom() }, { x, inner_rect.bottom() - (int)scaled_value }, m_graph_color); Point point = { x, inner_rect.bottom() - (int)scaled_value };
if (i != 0)
painter.draw_line(prev_point, point, m_graph_color);
prev_point = point;
} }
if (!m_values.is_empty() && text_formatter) { if (!m_values.is_empty() && text_formatter) {

3
Applications/ProcessManager/main.cpp
View file

@ -54,7 +54,6 @@ int main(int argc, char** argv)
auto* memory_graph_group_box = new GGroupBox("Memory usage", graphs_container); auto* memory_graph_group_box = new GGroupBox("Memory usage", graphs_container);
memory_graph_group_box->set_layout(make<GBoxLayout>(Orientation::Vertical)); memory_graph_group_box->set_layout(make<GBoxLayout>(Orientation::Vertical));
memory_graph_group_box->layout()->set_margins({ 6, 16, 6, 6 }); memory_graph_group_box->layout()->set_margins({ 6, 16, 6, 6 });
tabwidget->add_widget("Graphs", graphs_container);
memory_graph_group_box->set_size_policy(SizePolicy::Fill, SizePolicy::Fixed); memory_graph_group_box->set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
memory_graph_group_box->set_preferred_size({ 0, 120 }); memory_graph_group_box->set_preferred_size({ 0, 120 });
auto* memory_graph = new GraphWidget(memory_graph_group_box); auto* memory_graph = new GraphWidget(memory_graph_group_box);
@ -64,6 +63,8 @@ int main(int argc, char** argv)
return String::format("%d / %d KB", value, max); return String::format("%d / %d KB", value, max);
}; };
tabwidget->add_widget("Graphs", graphs_container);
widget->set_layout(make<GBoxLayout>(Orientation::Vertical)); widget->set_layout(make<GBoxLayout>(Orientation::Vertical));
auto* toolbar = new GToolBar(widget); auto* toolbar = new GToolBar(widget);