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xo-imgui: ex2: tidy margins for alloc display

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This commit is contained in:
Roland Conybeare 2025-08-24 18:37:38 -04:00
commit b07fd70b31
1 changed files with 18 additions and 5 deletions
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23
xo-imgui/example/ex2/imgui_ex2.cpp
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@ -41,6 +41,7 @@ ImVec2 operator+(const ImVec2 & p1, const ImVec2 & p2) {
struct ImRect {
ImRect() = default;
ImRect(const ImVec2 & tl, const ImVec2 & br) : top_left_{tl}, bottom_right_{br} {}
ImRect(float x_lo, float y_lo, float x_hi, float y_hi) : top_left_{x_lo, y_lo}, bottom_right_{x_hi, y_hi} {}
static ImRect from_xy_span(const ImVec2 & x_span, const ImVec2 & y_span) {
return ImRect(ImVec2{x_span.x, y_span.x}, ImVec2{x_span.y, y_span.y});
@ -73,6 +74,13 @@ struct ImRect {
return ImRect(ImVec2(top_left_.x, y0), ImVec2(bottom_right_.x, y1));
}
ImRect within_margin(const ImRect & margin) const {
return ImRect(this->x_lo() + margin.x_lo(),
this->y_lo() + margin.y_lo(),
this->x_hi() - margin.x_hi(),
this->y_hi() - margin.y_hi());
}
/** Require: 0.0 <= p <= 1.0 **/
ImRect top_fraction(float p) const {
return ImRect(top_left_, ImVec2(this->x_hi(), ((1.0 - p) * this->y_lo()) + (p * this->y_hi())));
@ -1023,6 +1031,7 @@ draw_gc_efficiency(const GcStateDescription & gcstate,
log && log(xtag("i", i));
} /*draw_gc_efficiency*/
void
draw_gc_alloc_state(const GcStateDescription & gcstate,
const ImRect & canvas_rect,
@ -1030,9 +1039,10 @@ draw_gc_alloc_state(const GcStateDescription & gcstate,
ImRect * p_nursery_alloc_rect,
ImRect * p_tenured_alloc_rect)
{
float lm = 50;
float rm = 70;
float tm = 10;
float lm = 0;
float rm = 0;
float tm = 0;
float bm = 0;
float est_chart_text_height = 14;
float h = 20; // chart bar height
@ -1146,11 +1156,12 @@ draw_gc_state(const AppState & app_state,
alloc_rect = ImRect(canvas_rect.top_left() + ImGui::GetWindowContentRegionMin(),
canvas_rect.top_left() + ImGui::GetWindowContentRegionMax());
ImRect draw_rect = alloc_rect.within_margin(ImRect(50, 10, 70, 10));
draw_list->PushClipRect(alloc_rect.top_left(), alloc_rect.bottom_right());
draw_list->PushClipRect(draw_rect.top_left(), draw_rect.bottom_right());
draw_gc_alloc_state(gcstate,
alloc_rect,
draw_rect,
draw_list,
p_nursery_alloc_rect,
p_tenured_alloc_rect);
@ -1354,6 +1365,8 @@ AnimateGcCopyCb::notify_gc_copy(std::size_t z,
generation valid_gen = xo::gc::valid_genresult2gen(gen);
p_app_state_->copy_detail_v_.push_back(GcCopyDetail(z, valid_gen, offset, alloc));
/* will be animated across frames, see animate_gc_copy() */
}
int main(int, char **)