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Bruno
2021-06-06 00:17:19 +02:00
parent 552c09d377
commit b6c853c308
5 changed files with 363 additions and 35 deletions
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211
ImGuiToolkit.cpp
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@@ -435,10 +435,10 @@ void ImGuiToolkit::HelpIcon(const char* desc, int i, int j, const char* shortcut
#define NUM_MARKS 10
#define LARGE_TICK_INCREMENT 1
#define LABEL_TICK_INCREMENT 3
static guint64 optimal_tick_marks[NUM_MARKS + LABEL_TICK_INCREMENT] = { 100 * MILISECOND, 500 * MILISECOND, 1 * SECOND, 2 * SECOND, 5 * SECOND, 10 * SECOND, 20 * SECOND, 1 * MINUTE, 2 * MINUTE, 5 * MINUTE, 10 * MINUTE, 60 * MINUTE, 60 * MINUTE };
bool ImGuiToolkit::TimelineSlider(const char* label, guint64 *time, guint64 start, guint64 end, guint64 step, const float width)
{
static guint64 optimal_tick_marks[NUM_MARKS + LABEL_TICK_INCREMENT] = { 100 * MILISECOND, 500 * MILISECOND, 1 * SECOND, 2 * SECOND, 5 * SECOND, 10 * SECOND, 20 * SECOND, 1 * MINUTE, 2 * MINUTE, 5 * MINUTE, 10 * MINUTE, 60 * MINUTE, 60 * MINUTE };
// get window
ImGuiWindow* window = ImGui::GetCurrentWindow();
if (window->SkipItems)
@@ -533,16 +533,12 @@ bool ImGuiToolkit::TimelineSlider(const char* label, guint64 *time, guint64 star
{
large_tick_step = 10 * step;
if (step > 0) {
// try to put a label every second
if ( 1000000000 % step < 1000)
label_tick_step = (1000000000 / step) * step;
// not a round framerate: probalby best to use 10 frames interval
else
label_tick_step = 10 * step;
}
// try to put a label every second
if ( 1000000000 % step < 1000)
label_tick_step = (1000000000 / step) * step;
// not a round framerate: probalby best to use 10 frames interval
else
label_tick_step = 30 * step;
label_tick_step = 10 * step;
}
else {
// while there is less than 5 pixels between two tick marks (or at last optimal tick mark)
@@ -622,6 +618,153 @@ bool ImGuiToolkit::TimelineSlider(const char* label, guint64 *time, guint64 star
return left_mouse_press;
}
void ImGuiToolkit::Timeline (const char* label, guint64 time, guint64 start, guint64 end, guint64 step, const float width)
{
// get window
ImGuiWindow* window = ImGui::GetCurrentWindow();
if (window->SkipItems)
return;
// get style & id
const ImGuiContext& g = *GImGui;
const ImGuiStyle& style = g.Style;
const float fontsize = g.FontSize;
const ImGuiID id = window->GetID(label);
//
// FIRST PREPARE ALL data structures
//
// widget bounding box
const float height = 2.f * (fontsize + style.FramePadding.y);
ImVec2 pos = window->DC.CursorPos;
ImVec2 size = ImVec2(width, height);
ImRect bbox(pos, pos + size);
ImGui::ItemSize(size, style.FramePadding.y);
if (!ImGui::ItemAdd(bbox, id))
return;
// cursor size
const float cursor_scale = 1.f;
const float cursor_width = 0.5f * fontsize * cursor_scale;
// TIMELINE is inside the bbox, in a slightly smaller bounding box
ImRect timeline_bbox(bbox);
timeline_bbox.Expand( ImVec2(-cursor_width, -style.FramePadding.y) );
// SLIDER is inside the timeline
// ImRect slider_bbox( timeline_bbox.GetTL() + ImVec2(-cursor_width + 2.f, cursor_width + 4.f ), timeline_bbox.GetBR() + ImVec2( cursor_width - 2.f, 0.f ) );
// units conversion: from time to float (calculation made with higher precision first)
float time_ = static_cast<float> ( static_cast<double>(time - start) / static_cast<double>(end) );
float step_ = static_cast<float> ( static_cast<double>(step) / static_cast<double>(end) );
//
// THIRD RENDER
//
// Render the bounding box
const ImU32 frame_col = ImGui::GetColorU32(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg);
ImGui::RenderFrame(bbox.Min, bbox.Max, frame_col, true, style.FrameRounding);
// by default, put a tick mark at every frame step and a large mark every second
guint64 tick_step = step;
guint64 large_tick_step = optimal_tick_marks[1+LARGE_TICK_INCREMENT];
guint64 label_tick_step = optimal_tick_marks[1+LABEL_TICK_INCREMENT];
// how many pixels to represent one frame step?
float tick_step_pixels = timeline_bbox.GetWidth() * step_;
// large space
if (tick_step_pixels > 5.f)
{
large_tick_step = 10 * step;
// try to put a label every second
if ( 1000000000 % step < 1000)
label_tick_step = (1000000000 / step) * step;
// not a round framerate: probalby best to use 10 frames interval
else
label_tick_step = 10 * step;
}
else {
// while there is less than 5 pixels between two tick marks (or at last optimal tick mark)
for ( int i=0; i<10 && tick_step_pixels < 5.f; ++i )
{
// try to use the optimal tick marks pre-defined
tick_step = optimal_tick_marks[i];
large_tick_step = optimal_tick_marks[i+LARGE_TICK_INCREMENT];
label_tick_step = optimal_tick_marks[i+LABEL_TICK_INCREMENT];
tick_step_pixels = timeline_bbox.GetWidth() * static_cast<float> ( static_cast<double>(tick_step) / static_cast<double>(end) );
}
}
// render the tick marks along TIMELINE
ImU32 color = ImGui::GetColorU32( style.Colors[ImGuiCol_Text] );
pos = timeline_bbox.GetTL();
guint64 tick = 0;
char overlay_buf[24];
// render text duration
ImFormatString(overlay_buf, IM_ARRAYSIZE(overlay_buf), "%s",
GstToolkit::time_to_string(end, GstToolkit::TIME_STRING_MINIMAL).c_str());
ImVec2 overlay_size = ImGui::CalcTextSize(overlay_buf, NULL);
ImVec2 duration_label = bbox.GetBR() - overlay_size - ImVec2(3.f, 3.f);
if (overlay_size.x > 0.0f)
ImGui::RenderTextClipped( duration_label, bbox.Max, overlay_buf, NULL, &overlay_size);
// render tick marks
while ( tick < end)
{
// large tick mark
float tick_length = !(tick%large_tick_step) ? fontsize - style.FramePadding.y : style.FramePadding.y;
// label tick mark
if ( !(tick%label_tick_step) ) {
tick_length = fontsize;
guint64 ticklabel = 100 * (guint64) round( (double)( tick ) / 100.0); // round value to avoid '0.99' and alike
ImFormatString(overlay_buf, IM_ARRAYSIZE(overlay_buf), "%s",
GstToolkit::time_to_string(ticklabel, GstToolkit::TIME_STRING_MINIMAL).c_str());
overlay_size = ImGui::CalcTextSize(overlay_buf, NULL);
ImVec2 mini = ImVec2( pos.x - overlay_size.x / 2.f, pos.y + tick_length );
ImVec2 maxi = ImVec2( pos.x + overlay_size.x / 2.f, pos.y + tick_length + overlay_size.y );
// do not overlap with label for duration
if (maxi.x < duration_label.x)
ImGui::RenderTextClipped(mini, maxi, overlay_buf, NULL, &overlay_size);
}
// draw the tick mark each step
window->DrawList->AddLine( pos, pos + ImVec2(0.f, tick_length), color);
// next tick
tick += tick_step;
float tick_percent = static_cast<float> ( static_cast<double>(tick) / static_cast<double>(end) );
pos = ImLerp(timeline_bbox.GetTL(), timeline_bbox.GetTR(), tick_percent);
}
// tick EOF
window->DrawList->AddLine( timeline_bbox.GetTR(), timeline_bbox.GetTR() + ImVec2(0.f, fontsize), color);
// disabled: render position
// ImFormatString(overlay_buf, IM_ARRAYSIZE(overlay_buf), "%s", GstToolkit::time_to_string(*time).c_str());
// overlay_size = ImGui::CalcTextSize(overlay_buf, NULL);
// overlay_size = ImVec2(3.f, -3.f - overlay_size.y);
// if (overlay_size.x > 0.0f)
// ImGui::RenderTextClipped( bbox.GetBL() + overlay_size, bbox.Max, overlay_buf, NULL, &overlay_size);
// // draw slider grab handle
// if (grab_slider_bb.Max.x > grab_slider_bb.Min.x) {
// window->DrawList->AddRectFilled(grab_slider_bb.Min, grab_slider_bb.Max, grab_slider_color, style.GrabRounding);
// }
// draw the cursor
if ( time_ > 0.f && time_ < 1.f ) {
color = ImGui::GetColorU32(style.Colors[ImGuiCol_SliderGrab]);
pos = ImLerp(timeline_bbox.GetTL(), timeline_bbox.GetTR(), time_) - ImVec2(cursor_width, 2.f);
ImGui::RenderArrow(window->DrawList, pos, color, ImGuiDir_Up, cursor_scale);
}
}
//bool ImGuiToolkit::InvisibleSliderInt(const char* label, guint64 *index, guint64 min, guint64 max, ImVec2 size)
bool ImGuiToolkit::InvisibleSliderInt(const char* label, uint *index, uint min, uint max, ImVec2 size)
{
@@ -785,6 +928,7 @@ void FilterCreation(float GKernel[], int N)
GKernel[i] /= max;
}
bool ImGuiToolkit::EditPlotHistoLines(const char* label, float *histogram_array, float *lines_array,
int values_count, float values_min, float values_max, bool edit_histogram, bool *released, const ImVec2 size)
{
@@ -922,6 +1066,51 @@ bool ImGuiToolkit::EditPlotHistoLines(const char* label, float *histogram_array,
return array_changed;
}
void ImGuiToolkit::ShowPlotHistoLines(const char* label, float *histogram_array, float *lines_array, int values_count, float values_min, float values_max, const ImVec2 size)
{
// get window
ImGuiWindow* window = ImGui::GetCurrentWindow();
if (window->SkipItems)
return;
// capture coordinates before any draw or action
ImVec2 canvas_pos = ImGui::GetCursorScreenPos();
// get id
const ImGuiID id = window->GetID(label);
// add item
ImVec2 pos = window->DC.CursorPos;
ImRect bbox(pos, pos + size);
ImGui::ItemSize(size);
if (!ImGui::ItemAdd(bbox, id))
return;
const ImGuiContext& g = *GImGui;
const ImGuiStyle& style = g.Style;
ImVec4 bg_color = style.Colors[ImGuiCol_FrameBg];
// back to draw
ImGui::SetCursorScreenPos(canvas_pos);
// plot transparent histogram
ImGui::PushStyleColor(ImGuiCol_FrameBg, bg_color);
ImGui::PushStyleColor(ImGuiCol_PlotHistogram, ImVec4(0, 0, 0, 250));
char buf[128];
sprintf(buf, "##Histo%s", label);
ImGui::PlotHistogram(buf, histogram_array, values_count, 0, NULL, values_min, values_max, size);
ImGui::PopStyleColor(2);
ImGui::SetCursorScreenPos(canvas_pos);
// plot lines
ImGui::PushStyleColor(ImGuiCol_FrameBg, ImVec4(0,0,0,0));
sprintf(buf, "##Lines%s", label);
ImGui::PlotLines(buf, lines_array, values_count, 0, NULL, values_min, values_max, size);
ImGui::PopStyleColor(1);
}
void ImGuiToolkit::SetFont(ImGuiToolkit::font_style style, const std::string &ttf_font_name, int pointsize, int oversample)
{