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IsPlotXAxisHovered, IsPlotYAxisHovered

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Returns true if the XAxis plot area or YAxis[n] plot area in the current or most recent plot is hovered.
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ozlb 2020-07-14 23:43:57 +02:00 committed by GitHub
parent 140dd2bd8a
commit 9df6f22555
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3 changed files with 62 additions and 32 deletions
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65
implot.cpp
View File

@ -195,10 +195,10 @@ inline T Remap(T x, T x0, T x1, T y0, T y1) {
// Returns always positive modulo // Returns always positive modulo
inline int PosMod(int l, int r) { inline int PosMod(int l, int r) {
if (r == 0) if (r == 0)
return 0; return 0;
else else
return (l % r + r) % r; return (l % r + r) % r;
} }
// Returns the intersection point of two lines A and B (assumes they are not parallel!) // Returns the intersection point of two lines A and B (assumes they are not parallel!)
@ -311,11 +311,13 @@ struct ImPlotTick {
struct ImPlotAxis { struct ImPlotAxis {
ImPlotAxis() { ImPlotAxis() {
Dragging = false; Dragging = false;
Hovered = false;
Range.Min = 0; Range.Min = 0;
Range.Max = 1; Range.Max = 1;
Flags = PreviousFlags = ImPlotAxisFlags_Default; Flags = PreviousFlags = ImPlotAxisFlags_Default;
} }
bool Dragging; bool Dragging;
bool Hovered;
ImPlotRange Range; ImPlotRange Range;
ImPlotAxisFlags Flags, PreviousFlags; ImPlotAxisFlags Flags, PreviousFlags;
}; };
@ -1022,7 +1024,7 @@ bool BeginPlot(const char* title, const char* x_label, const char* y_label, cons
// axis region bbs // axis region bbs
const ImRect xAxisRegion_bb(gp.BB_Plot.Min + ImVec2(10, 0), ImVec2(gp.BB_Plot.Max.x, gp.BB_Frame.Max.y) - ImVec2(10, 0)); const ImRect xAxisRegion_bb(gp.BB_Plot.Min + ImVec2(10, 0), ImVec2(gp.BB_Plot.Max.x, gp.BB_Frame.Max.y) - ImVec2(10, 0));
const bool hov_x_axis_region = xAxisRegion_bb.Contains(IO.MousePos); plot.XAxis.Hovered = xAxisRegion_bb.Contains(IO.MousePos);
// The left labels are referenced to the left of the bounding box. // The left labels are referenced to the left of the bounding box.
gp.AxisLabelReference[0] = gp.BB_Plot.Min.x; gp.AxisLabelReference[0] = gp.BB_Plot.Min.x;
@ -1047,12 +1049,11 @@ bool BeginPlot(const char* title, const char* x_label, const char* y_label, cons
ImRect centralRegion(ImVec2(gp.BB_Plot.Min.x + 6, gp.BB_Plot.Min.y), ImRect centralRegion(ImVec2(gp.BB_Plot.Min.x + 6, gp.BB_Plot.Min.y),
ImVec2(gp.BB_Plot.Max.x - 6, gp.BB_Plot.Max.y)); ImVec2(gp.BB_Plot.Max.x - 6, gp.BB_Plot.Max.y));
const bool hov_y_axis_region[MAX_Y_AXES] = { plot.YAxis[0].Hovered = gp.Y[0].Present && (yAxisRegion_bb[0].Contains(IO.MousePos) || centralRegion.Contains(IO.MousePos));
gp.Y[0].Present && (yAxisRegion_bb[0].Contains(IO.MousePos) || centralRegion.Contains(IO.MousePos)), plot.YAxis[1].Hovered = gp.Y[1].Present && (yAxisRegion_bb[1].Contains(IO.MousePos) || centralRegion.Contains(IO.MousePos));
gp.Y[1].Present && (yAxisRegion_bb[1].Contains(IO.MousePos) || centralRegion.Contains(IO.MousePos)), plot.YAxis[2].Hovered = gp.Y[2].Present && (yAxisRegion_bb[2].Contains(IO.MousePos) || centralRegion.Contains(IO.MousePos));
gp.Y[2].Present && (yAxisRegion_bb[2].Contains(IO.MousePos) || centralRegion.Contains(IO.MousePos)),
}; const bool any_hov_y_axis_region = plot.YAxis[0].Hovered || plot.YAxis[1].Hovered || plot.YAxis[2].Hovered;
const bool any_hov_y_axis_region = hov_y_axis_region[0] || hov_y_axis_region[1] || hov_y_axis_region[2];
// legend hovered from last frame // legend hovered from last frame
const bool hov_legend = HasFlag(plot.Flags, ImPlotFlags_Legend) ? gp.Hov_Frame && plot.BB_Legend.Contains(IO.MousePos) : false; const bool hov_legend = HasFlag(plot.Flags, ImPlotFlags_Legend) ? gp.Hov_Frame && plot.BB_Legend.Contains(IO.MousePos) : false;
@ -1150,11 +1151,11 @@ bool BeginPlot(const char* title, const char* x_label, const char* y_label, cons
} }
// start drag // start drag
if (!drag_in_progress && gp.Hov_Frame && IO.MouseClicked[gp.InputMap.PanButton] && HasFlag(IO.KeyMods, gp.InputMap.PanMod) && !plot.Selecting && !hov_legend && !hov_query && !plot.DraggingQuery) { if (!drag_in_progress && gp.Hov_Frame && IO.MouseClicked[gp.InputMap.PanButton] && HasFlag(IO.KeyMods, gp.InputMap.PanMod) && !plot.Selecting && !hov_legend && !hov_query && !plot.DraggingQuery) {
if (hov_x_axis_region) { if (plot.XAxis.Hovered) {
plot.XAxis.Dragging = true; plot.XAxis.Dragging = true;
} }
for (int i = 0; i < MAX_Y_AXES; i++) { for (int i = 0; i < MAX_Y_AXES; i++) {
if (hov_y_axis_region[i]) { if (plot.YAxis[i].Hovered) {
plot.YAxis[i].Dragging = true; plot.YAxis[i].Dragging = true;
} }
} }
@ -1162,14 +1163,14 @@ bool BeginPlot(const char* title, const char* x_label, const char* y_label, cons
// SCROLL INPUT ----------------------------------------------------------- // SCROLL INPUT -----------------------------------------------------------
if (gp.Hov_Frame && (hov_x_axis_region || any_hov_y_axis_region) && IO.MouseWheel != 0) { if (gp.Hov_Frame && (plot.XAxis.Hovered || any_hov_y_axis_region) && IO.MouseWheel != 0) {
UpdateTransformCache(); UpdateTransformCache();
float zoom_rate = 0.1f; float zoom_rate = 0.1f;
if (IO.MouseWheel > 0) if (IO.MouseWheel > 0)
zoom_rate = (-zoom_rate) / (1.0f + (2.0f * zoom_rate)); zoom_rate = (-zoom_rate) / (1.0f + (2.0f * zoom_rate));
float tx = Remap(IO.MousePos.x, gp.BB_Plot.Min.x, gp.BB_Plot.Max.x, 0.0f, 1.0f); float tx = Remap(IO.MousePos.x, gp.BB_Plot.Min.x, gp.BB_Plot.Max.x, 0.0f, 1.0f);
float ty = Remap(IO.MousePos.y, gp.BB_Plot.Min.y, gp.BB_Plot.Max.y, 0.0f, 1.0f); float ty = Remap(IO.MousePos.y, gp.BB_Plot.Min.y, gp.BB_Plot.Max.y, 0.0f, 1.0f);
if (hov_x_axis_region && !gp.X.Lock) { if (plot.XAxis.Hovered && !gp.X.Lock) {
ImPlotAxisScale axis_scale(0, tx, ty, zoom_rate); ImPlotAxisScale axis_scale(0, tx, ty, zoom_rate);
const ImPlotPoint& plot_tl = axis_scale.Min; const ImPlotPoint& plot_tl = axis_scale.Min;
const ImPlotPoint& plot_br = axis_scale.Max; const ImPlotPoint& plot_br = axis_scale.Max;
@ -1180,7 +1181,7 @@ bool BeginPlot(const char* title, const char* x_label, const char* y_label, cons
plot.XAxis.Range.Max = gp.X.Invert ? plot_tl.x : plot_br.x; plot.XAxis.Range.Max = gp.X.Invert ? plot_tl.x : plot_br.x;
} }
for (int i = 0; i < MAX_Y_AXES; i++) { for (int i = 0; i < MAX_Y_AXES; i++) {
if (hov_y_axis_region[i] && !gp.Y[i].Lock) { if (plot.YAxis[i].Hovered && !gp.Y[i].Lock) {
ImPlotAxisScale axis_scale(i, tx, ty, zoom_rate); ImPlotAxisScale axis_scale(i, tx, ty, zoom_rate);
const ImPlotPoint& plot_tl = axis_scale.Min; const ImPlotPoint& plot_tl = axis_scale.Min;
const ImPlotPoint& plot_br = axis_scale.Max; const ImPlotPoint& plot_br = axis_scale.Max;
@ -1275,11 +1276,11 @@ bool BeginPlot(const char* title, const char* x_label, const char* y_label, cons
// DOUBLE CLICK ----------------------------------------------------------- // DOUBLE CLICK -----------------------------------------------------------
if ( IO.MouseDoubleClicked[gp.InputMap.FitButton] && gp.Hov_Frame && (hov_x_axis_region || any_hov_y_axis_region) && !hov_legend && !hov_query) { if ( IO.MouseDoubleClicked[gp.InputMap.FitButton] && gp.Hov_Frame && (plot.XAxis.Hovered || any_hov_y_axis_region) && !hov_legend && !hov_query) {
gp.FitThisFrame = true; gp.FitThisFrame = true;
gp.FitX = hov_x_axis_region; gp.FitX = plot.XAxis.Hovered;
for (int i = 0; i < MAX_Y_AXES; i++) { for (int i = 0; i < MAX_Y_AXES; i++) {
gp.FitY[i] = hov_y_axis_region[i]; gp.FitY[i] = plot.YAxis[i].Hovered;
} }
} }
else { else {
@ -1368,6 +1369,7 @@ bool BeginPlot(const char* title, const char* x_label, const char* y_label, cons
DrawList.AddText(xLabel_pos, gp.Col_X.Txt, x_label); DrawList.AddText(xLabel_pos, gp.Col_X.Txt, x_label);
} }
ImGui::PushClipRect(gp.BB_Frame.Min, gp.BB_Frame.Max, true); ImGui::PushClipRect(gp.BB_Frame.Min, gp.BB_Frame.Max, true);
bool yAxisAllOvered = plot.YAxis[0].Hovered && plot.YAxis[1].Hovered && plot.YAxis[2].Hovered;
for (int i = 0; i < MAX_Y_AXES; i++) { for (int i = 0; i < MAX_Y_AXES; i++) {
if (gp.Y[i].Present && HasFlag(plot.YAxis[i].Flags, ImPlotAxisFlags_TickLabels)) { if (gp.Y[i].Present && HasFlag(plot.YAxis[i].Flags, ImPlotAxisFlags_TickLabels)) {
for (int t = 0; t < gp.YTicks[i].Size; t++) { for (int t = 0; t < gp.YTicks[i].Size; t++) {
@ -1379,6 +1381,9 @@ bool BeginPlot(const char* title, const char* x_label, const char* y_label, cons
} }
} }
} }
if (plot.YAxis[i].Hovered && !yAxisAllOvered && ImGui::IsDragDropPayloadBeingAccepted()) {
DrawList.AddRect(yAxisRegion_bb[i].Min, yAxisRegion_bb[i].Max, ImGui::GetColorU32(ImGuiCol_DragDropTarget));
}
} }
ImGui::PopClipRect(); ImGui::PopClipRect();
if (y_label) { if (y_label) {
@ -1895,6 +1900,20 @@ bool IsPlotHovered() {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "IsPlotHovered() needs to be called between BeginPlot() and EndPlot()!"); IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "IsPlotHovered() needs to be called between BeginPlot() and EndPlot()!");
return gp.Hov_Plot; return gp.Hov_Plot;
} }
bool IsPlotXAxisHovered() {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "IsPlotXAxisHovered() needs to be called between BeginPlot() and EndPlot()!");
return gp.CurrentPlot->XAxis.Hovered;
}
bool IsPlotYAxisHovered(int y_axis_in) {
IM_ASSERT_USER_ERROR(y_axis_in >= -1 && y_axis_in < MAX_Y_AXES, "y_axis needs to between -1 and MAX_Y_AXES");
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "IsPlotYAxisHovered() needs to be called between BeginPlot() and EndPlot()!");
const int y_axis = y_axis_in >= 0 ? y_axis_in : gp.CurrentPlot->CurrentYAxis;
bool yAxisAllOvered = gp.CurrentPlot->YAxis[0].Hovered && gp.CurrentPlot->YAxis[1].Hovered && gp.CurrentPlot->YAxis[2].Hovered;
return !yAxisAllOvered && gp.CurrentPlot->YAxis[y_axis].Hovered;
}
ImPlotPoint GetPlotMousePos(int y_axis_in) { ImPlotPoint GetPlotMousePos(int y_axis_in) {
IM_ASSERT_USER_ERROR(y_axis_in >= -1 && y_axis_in < MAX_Y_AXES, "y_axis needs to between -1 and MAX_Y_AXES"); IM_ASSERT_USER_ERROR(y_axis_in >= -1 && y_axis_in < MAX_Y_AXES, "y_axis needs to between -1 and MAX_Y_AXES");
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "GetPlotMousePos() needs to be called between BeginPlot() and EndPlot()!"); IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "GetPlotMousePos() needs to be called between BeginPlot() and EndPlot()!");
@ -1941,12 +1960,12 @@ ImPlotLimits GetPlotQuery(int y_axis_in) {
bool IsPlotItemHighlight(const char* label_id) { bool IsPlotItemHighlight(const char* label_id) {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "IsPlotItemHighlight() needs to be called between BeginPlot() and EndPlot()!"); IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "IsPlotItemHighlight() needs to be called between BeginPlot() and EndPlot()!");
ImGuiID id = ImGui::GetID(label_id); ImGuiID id = ImGui::GetID(label_id);
ImPlotItem* item = gp.CurrentPlot->Items.GetOrAddByKey(id); ImPlotItem* item = gp.CurrentPlot->Items.GetOrAddByKey(id);
if (item && item->Highlight) if (item && item->Highlight)
return true; return true;
else else
return false; return false;
} }
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------

4
implot.h
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@ -290,6 +290,10 @@ void PlotText(const char* text, double x, double y, bool vertical = false, const
// Returns true if the plot area in the current or most recent plot is hovered. // Returns true if the plot area in the current or most recent plot is hovered.
bool IsPlotHovered(); bool IsPlotHovered();
// Returns true if the XAxis plot area in the current or most recent plot is hovered.
bool IsPlotXAxisHovered();
// Returns true if the YAxis[n] plot area in the current or most recent plot is hovered.
bool IsPlotYAxisHovered(int y_axis = 0);
// Returns the mouse position in x,y coordinates of the current or most recent plot. A negative y_axis uses the current value of SetPlotYAxis (0 initially). // Returns the mouse position in x,y coordinates of the current or most recent plot. A negative y_axis uses the current value of SetPlotYAxis (0 initially).
ImPlotPoint GetPlotMousePos(int y_axis = -1); ImPlotPoint GetPlotMousePos(int y_axis = -1);
// Returns the current or most recent plot axis range. A negative y_axis uses the current value of SetPlotYAxis (0 initially). // Returns the current or most recent plot axis range. A negative y_axis uses the current value of SetPlotYAxis (0 initially).

25
implot_demo.cpp
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@ -709,13 +709,15 @@ void ShowDemoWindow(bool* p_open) {
static bool init = true; static bool init = true;
static ScrollingData data[K_CHANNELS]; static ScrollingData data[K_CHANNELS];
static bool show[K_CHANNELS]; static bool show[K_CHANNELS];
static int yAxis[K_CHANNELS];
if (init) { if (init) {
for (int i = 0; i < K_CHANNELS; ++i) { for (int i = 0; i < K_CHANNELS; ++i) {
show[i] = false; show[i] = false;
yAxis[i] = 0;
} }
init = false; init = false;
} }
ImGui::BulletText("Drag data items from the left column onto the plot."); ImGui::BulletText("Drag data items from the left column onto the plot or onto y axis");
ImGui::BeginGroup(); ImGui::BeginGroup();
if (ImGui::Button("Clear", ImVec2(100, 0))) { if (ImGui::Button("Clear", ImVec2(100, 0))) {
for (int i = 0; i < K_CHANNELS; ++i) { for (int i = 0; i < K_CHANNELS; ++i) {
@ -749,23 +751,28 @@ void ShowDemoWindow(bool* p_open) {
} }
} }
ImPlot::SetNextPlotLimitsX((double)t - 10, t, paused ? ImGuiCond_Once : ImGuiCond_Always); ImPlot::SetNextPlotLimitsX((double)t - 10, t, paused ? ImGuiCond_Once : ImGuiCond_Always);
if (ImPlot::BeginPlot("##DND")) { if (ImPlot::BeginPlot("##DND", NULL, NULL, ImVec2(-1,0), ImPlotFlags_Legend | ImPlotFlags_Highlight | ImPlotFlags_BoxSelect | ImPlotFlags_ContextMenu | ImPlotFlags_NoChild | ImPlotFlags_YAxis2 | ImPlotFlags_YAxis3)) {
for (int i = 0; i < K_CHANNELS; ++i) { for (int i = 0; i < K_CHANNELS; ++i) {
if (show[i] && data[i].Data.size() > 0) { if (show[i] && data[i].Data.size() > 0) {
char label[K_CHANNELS]; char label[K_CHANNELS];
sprintf(label, "data_%d", i); sprintf(label, "data_%d", i);
ImPlot::SetPlotYAxis(yAxis[i]);
ImPlot::PlotLine(label, &data[i].Data[0].x, &data[i].Data[0].y, data[i].Data.size(), data[i].Offset, 2 * sizeof(t_float)); ImPlot::PlotLine(label, &data[i].Data[0].x, &data[i].Data[0].y, data[i].Data.size(), data[i].Offset, 2 * sizeof(t_float));
} }
} }
if (ImGui::BeginDragDropTarget()) {
if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("DND_PLOT")) {
int i = *(int*)payload->Data;
show[i] = true;
for (int y = 0; y < 3; y++) {
if (ImPlot::IsPlotYAxisHovered(y))
yAxis[i] = y;
}
}
ImGui::EndDragDropTarget();
}
ImPlot::EndPlot(); ImPlot::EndPlot();
} }
if (ImGui::BeginDragDropTarget()) {
if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("DND_PLOT")) {
int i = *(int*)payload->Data;
show[i] = true;
}
ImGui::EndDragDropTarget();
}
} }
//------------------------------------------------------------------------- //-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Digital and Analog Signals")) { if (ImGui::CollapsingHeader("Digital and Analog Signals")) {