logmeow/group_panel.cpp

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2023-01-28 14:11:46 +00:00
#define IMGUI_DEFINE_MATH_OPERATORS
#include <imgui/imgui.h>
#include <imgui/imgui_internal.h>
2023-01-28 14:11:46 +00:00
#include "group_panel.h"
// The following code is slightly modified public domain code from https://github.com/thedmd
// All modifications have an inline comment with "[CUSTOM]"
// Public domain claim from https://github.com/ocornut/imgui/issues/1496#issuecomment-1287772456
// Code from https://github.com/ocornut/imgui/issues/1496#issuecomment-569892444 and
// some snippets from https://github.com/ocornut/imgui/issues/1496#issuecomment-655048353
void ImGui::BeginGroupPanel(const ImVec2& size) // [CUSTOM]
{
ImGui::BeginGroup();
//auto cursorPos = ImGui::GetCursorScreenPos(); // [CUSTOM]
auto itemSpacing = ImGui::GetStyle().ItemSpacing;
ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0.0f, 0.0f));
ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(0.0f, 0.0f));
auto frameHeight = ImGui::GetFrameHeight();
ImGui::BeginGroup();
ImVec2 effectiveSize = size;
if (size.x < 0.0f)
effectiveSize.x = ImGui::GetContentRegionAvail().x; // [CUSTOM]
else
effectiveSize.x = size.x;
ImGui::Dummy(ImVec2(effectiveSize.x, 0.0f));
ImGui::Dummy(ImVec2(frameHeight, 0.0f)); // [CUSTOM]
ImGui::SameLine(0.0f, 0.0f);
ImGui::BeginGroup();
ImGui::Dummy(ImVec2(frameHeight, 0.0f)); // [CUSTOM]
ImGui::SameLine(0.0f, 0.0f);
//ImGui::TextUnformatted(name); // [CUSTOM]
ImGui::SameLine(0.0f, 0.0f);
ImGui::Dummy(ImVec2(0.0, frameHeight + itemSpacing.y));
ImGui::BeginGroup();
ImGui::PopStyleVar(2);
//ImGui::GetCurrentWindow()->ContentsRegionRect.Max.x -= frameHeight * 0.5f; // [CUSTOM]
ImGui::GetCurrentWindow()->ContentRegionRect.Max.x -= frameHeight * 0.5f;
ImGui::GetCurrentWindow()->WorkRect.Max.x -= frameHeight * 0.5f;
ImGui::GetCurrentWindow()->InnerRect.Max.x -= frameHeight * 0.5f;
ImGui::GetCurrentWindow()->Size.x -= frameHeight;
auto itemWidth = ImGui::CalcItemWidth();
ImGui::PushItemWidth(ImMax(0.0f, itemWidth - frameHeight));
//ImGui::PushItemWidth(effectiveSize.x - frameHeight); // [CUSTOM]
}
void ImGui::EndGroupPanel()
{
ImGui::PopItemWidth();
auto itemSpacing = ImGui::GetStyle().ItemSpacing;
ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0.0f, 0.0f));
ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(0.0f, 0.0f));
auto frameHeight = ImGui::GetFrameHeight();
ImGui::EndGroup();
//ImGui::GetWindowDrawList()->AddRectFilled(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), IM_COL32(0, 255, 0, 64), 4.0f);
ImGui::EndGroup();
ImGui::SameLine(0.0f, 0.0f);
ImGui::Dummy(ImVec2(frameHeight * 0.5f, 0.0f));
ImGui::Dummy(ImVec2(0.0, frameHeight - itemSpacing.y)); // [CUSTOM]
ImGui::EndGroup();
auto itemMin = ImGui::GetItemRectMin();
auto itemMax = ImGui::GetItemRectMax();
//ImGui::GetWindowDrawList()->AddRectFilled(itemMin, itemMax, IM_COL32(255, 0, 0, 64), 4.0f);
ImVec2 halfFrame = ImVec2(frameHeight * 0.25f, frameHeight) * 0.5f;
ImGui::GetWindowDrawList()->AddRect(
itemMin + halfFrame, itemMax - ImVec2(halfFrame.x, 0.0f),
ImColor(ImGui::GetStyleColorVec4(ImGuiCol_Border)),
halfFrame.x);
ImGui::PopStyleVar(2);
//ImGui::GetCurrentWindow()->ContentsRegionRect.Max.x += frameHeight * 0.5f; // [CUSTOM]
ImGui::GetCurrentWindow()->ContentRegionRect.Max.x += frameHeight * 0.5f;
ImGui::GetCurrentWindow()->WorkRect.Max.x += frameHeight * 0.5f;
ImGui::GetCurrentWindow()->InnerRect.Max.x += frameHeight * 0.5f;
ImGui::GetCurrentWindow()->Size.x += frameHeight;
ImGui::Dummy(ImVec2(0.0f, 0.0f));
ImGui::EndGroup();
}