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[glass] Auto-size plots to fit window (#3193)

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Plots can still be set to have a fixed height, in which case the remaining
space is distributed amongst the auto-sized plots.
This commit is contained in:
Peter Johnson
2021-02-21 16:38:06 -08:00
committed by GitHub
parent 2560146da3
commit af4adf5379
1 changed files with 64 additions and 6 deletions
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70
glass/src/lib/native/cpp/other/Plot.cpp
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@@ -113,6 +113,15 @@ class Plot {
std::vector<std::unique_ptr<PlotSeries>> m_series;
// Returns base height; does not include actual plot height if auto-sized.
int GetAutoBaseHeight(bool* isAuto, size_t i);
void SetAutoHeight(int height) {
if (m_autoHeight) {
m_height = height;
}
}
private:
void EmitSettingsLimits(int axis);
@@ -123,6 +132,7 @@ class Plot {
bool m_lockPrevX = false;
bool m_paused = false;
float m_viewTime = 10;
bool m_autoHeight = true;
int m_height = 300;
struct PlotRange {
double min = 0;
@@ -527,6 +537,13 @@ bool Plot::ReadIni(wpi::StringRef name, wpi::StringRef value) {
}
m_viewTime = num / 1000.0;
return true;
} else if (name == "autoHeight") {
int num;
if (value.getAsInteger(10, num)) {
return true;
}
m_autoHeight = num != 0;
return true;
} else if (name == "height") {
int num;
if (value.getAsInteger(10, num)) {
@@ -582,12 +599,12 @@ bool Plot::ReadIni(wpi::StringRef name, wpi::StringRef value) {
void Plot::WriteIni(ImGuiTextBuffer* out) {
out->appendf(
"name=%s\nvisible=%d\nshowPause=%d\nlockPrevX=%d\nlegend=%d\n"
"yaxis2=%d\nyaxis3=%d\nviewTime=%d\nheight=%d\n",
"yaxis2=%d\nyaxis3=%d\nviewTime=%d\nautoHeight=%d\nheight=%d\n",
m_name.c_str(), m_visible ? 1 : 0, m_showPause ? 1 : 0,
m_lockPrevX ? 1 : 0, (m_plotFlags & ImPlotFlags_NoLegend) ? 0 : 1,
(m_plotFlags & ImPlotFlags_YAxis2) ? 1 : 0,
(m_plotFlags & ImPlotFlags_YAxis3) ? 1 : 0,
static_cast<int>(m_viewTime * 1000), m_height);
static_cast<int>(m_viewTime * 1000), m_autoHeight ? 1 : 0, m_height);
for (int i = 0; i < 3; ++i) {
out->appendf(
"y%d_min=%d\ny%d_max=%d\ny%d_lockMin=%d\ny%d_lockMax=%d\n"
@@ -761,14 +778,34 @@ void Plot::EmitSettings(size_t i) {
}
ImGui::SetNextItemWidth(ImGui::GetFontSize() * 6);
ImGui::InputFloat("View Time (s)", &m_viewTime, 0.1f, 1.0f, "%.1f");
ImGui::SetNextItemWidth(ImGui::GetFontSize() * 6);
if (ImGui::InputInt("Height", &m_height, 10)) {
if (m_height < 0) {
m_height = 0;
ImGui::Checkbox("Auto Height", &m_autoHeight);
if (!m_autoHeight) {
ImGui::SetNextItemWidth(ImGui::GetFontSize() * 6);
if (ImGui::InputInt("Height", &m_height, 10)) {
if (m_height < 0) {
m_height = 0;
}
}
}
}
int Plot::GetAutoBaseHeight(bool* isAuto, size_t i) {
*isAuto = m_autoHeight;
if (!m_visible) {
return 0;
}
int height = m_autoHeight ? 0 : m_height;
// Pause button
if ((i == 0 || !m_lockPrevX) && m_showPause) {
height += ImGui::GetFrameHeightWithSpacing();
}
return height;
}
void PlotView::Display() {
if (ImGui::BeginPopupContextItem()) {
if (ImGui::Button("Add plot")) {
@@ -844,6 +881,27 @@ void PlotView::Display() {
auto ref = static_cast<const PlotSeriesRef*>(payload->Data);
MovePlot(ref->view, ref->plotIndex, 0);
}
return;
}
// Auto-size plots. This requires two passes: the first pass to get the
// total height, the second to actually set the height after averaging it
// across all auto-sized heights.
int availHeight = ImGui::GetContentRegionAvail().y;
int numAuto = 0;
for (size_t i = 0; i < m_plots.size(); ++i) {
bool isAuto;
availHeight -= m_plots[i]->GetAutoBaseHeight(&isAuto, i);
availHeight -= ImGui::GetStyle().ItemSpacing.y;
if (isAuto) {
++numAuto;
}
}
if (numAuto > 0) {
availHeight /= numAuto;
for (size_t i = 0; i < m_plots.size(); ++i) {
m_plots[i]->SetAutoHeight(availHeight);
}
}
double now = wpi::Now() * 1.0e-6;