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Improved cursor EditPlotHistoLines

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Bruno
2021-05-19 23:29:57 +02:00
parent 19ba943075
commit 80cf57a979
1 changed files with 21 additions and 11 deletions
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32
ImGuiToolkit.cpp
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@@ -738,7 +738,7 @@ bool ImGuiToolkit::EditPlotLines(const char* label, float *array, int values_cou
}
bool ImGuiToolkit::EditPlotHistoLines(const char* label, float *histogram_array, float *lines_array,
int values_count, float values_min, float values_max, bool cut, bool *released, const ImVec2 size)
int values_count, float values_min, float values_max, bool edit_histogram, bool *released, const ImVec2 size)
{
bool array_changed = false;
@@ -761,6 +761,7 @@ bool ImGuiToolkit::EditPlotHistoLines(const char* label, float *histogram_array,
if (!ImGui::ItemAdd(bbox, id))
return false;
*released = false;
// read user input and activate widget
@@ -780,13 +781,16 @@ bool ImGuiToolkit::EditPlotHistoLines(const char* label, float *histogram_array,
else
return false;
static ImVec4* colors = ImGui::GetStyle().Colors;
ImVec4 bg_color = hovered ? colors[ImGuiCol_FrameBgHovered] : colors[ImGuiCol_FrameBg];
const ImGuiContext& g = *GImGui;
const ImGuiStyle& style = g.Style;
const float _h_space = g.Style.WindowPadding.x;
const ImU32 fg_color = ImGui::GetColorU32( style.Colors[ImGuiCol_Text] );
ImVec4 bg_color = hovered ? style.Colors[ImGuiCol_FrameBgHovered] : style.Colors[ImGuiCol_FrameBg];
// enter edit if widget is active
if (ImGui::GetActiveID() == id) {
bg_color = colors[ImGuiCol_FrameBgActive];
bg_color = style.Colors[ImGuiCol_FrameBgActive];
// keep active area while mouse is pressed
static bool active = false;
@@ -794,7 +798,7 @@ bool ImGuiToolkit::EditPlotHistoLines(const char* label, float *histogram_array,
if (mouse_press)
{
float x = (float) values_count * mouse_pos_in_canvas.x / bbox.GetWidth();
float x = (float) values_count * (mouse_pos_in_canvas.x - _h_space) / (size.x - 2.f * _h_space);
uint index = CLAMP( (int) floor(x), 0, values_count-1);
float y = mouse_pos_in_canvas.y / bbox.GetHeight();
@@ -803,7 +807,7 @@ bool ImGuiToolkit::EditPlotHistoLines(const char* label, float *histogram_array,
if (previous_index == UINT32_MAX)
previous_index = index;
if (cut){
if (edit_histogram){
static float target_value = values_min;
// toggle value histo
@@ -812,17 +816,15 @@ bool ImGuiToolkit::EditPlotHistoLines(const char* label, float *histogram_array,
active = true;
}
for (int i = MIN(previous_index, index); i < MAX(previous_index, index); ++i)
for (uint i = MIN(previous_index, index); i < MAX(previous_index, index); ++i)
histogram_array[i] = target_value;
}
else {
lines_array[index] = values_max - y;
for (int i = MIN(previous_index, index); i < MAX(previous_index, index); ++i)
for (uint i = MIN(previous_index, index); i < MAX(previous_index, index); ++i)
lines_array[i] = values_max - y;
}
previous_index = index;
array_changed = true;
}
// release active widget on mouse release
@@ -840,7 +842,7 @@ bool ImGuiToolkit::EditPlotHistoLines(const char* label, float *histogram_array,
// plot transparent histogram
ImGui::PushStyleColor(ImGuiCol_FrameBg, bg_color);
ImGui::PushStyleColor(ImGuiCol_PlotHistogram, colors[ImGuiCol_TitleBg]);
ImGui::PushStyleColor(ImGuiCol_PlotHistogram, style.Colors[ImGuiCol_TitleBg]);
char buf[128];
sprintf(buf, "##Histo%s", label);
ImGui::PlotHistogram(buf, histogram_array, values_count, 0, NULL, values_min, values_max, size);
@@ -854,6 +856,14 @@ bool ImGuiToolkit::EditPlotHistoLines(const char* label, float *histogram_array,
ImGui::PlotLines(buf, lines_array, values_count, 0, NULL, values_min, values_max, size);
ImGui::PopStyleColor(1);
// draw the cursor bar
if (hovered) {
if (edit_histogram)
window->DrawList->AddLine( canvas_pos + ImVec2(mouse_pos_in_canvas.x, 4.f), canvas_pos + ImVec2(mouse_pos_in_canvas.x, size.y - 4.f), fg_color);
else {
window->DrawList->AddCircle( canvas_pos + mouse_pos_in_canvas, 2.f, fg_color, 6);
}
}
return array_changed;
}