ImGuiOverlay.ixx File

Manages a collection of ImGui widgets and renders them using a backend. More...

Included Headers

#include <vector> #include "imgui.h" #include <helios.imgui.ImGuiWidget> #include <helios.imgui.ImGuiBackend>

Namespaces Index

namespace	helios
namespace	imgui

Classes Index

class	ImGuiOverlay
	Central manager for ImGui widgets rendered via a specific backend. More...

Description

Manages a collection of ImGui widgets and renders them using a backend.

File Listing

The file content with the documentation metadata removed is:

1

5module;

6

7#include <vector>

8

9#include "imgui.h"

10

11export module helios.imgui.ImGuiOverlay;

12

13import helios.imgui.ImGuiBackend;

14import helios.imgui.ImGuiWidget;

15

16

17export namespace helios::imgui {

18

29 class ImGuiOverlay {

30

31

32 private:

43 std::vector<helios::imgui::ImGuiWidget*> widgets_;

44

55 ImGuiBackend* backend_;

56

60 bool enableDockSpace_ = true;

61

71 explicit ImGuiOverlay(ImGuiBackend* backend) :

72 backend_(backend)

73 {

74 }

75

76 public:

77

84 static ImGuiOverlay& forBackend(ImGuiBackend* backend) {

85

86 static auto overlay = ImGuiOverlay(backend);

87

88 return overlay;

89 }

90

99 void addWidget(ImGuiWidget* widget) {

100

101 widgets_.emplace_back(widget);

102 }

103

111 void setDockSpaceEnabled(bool enabled) noexcept {

112 enableDockSpace_ = enabled;

113 }

114

122 void render() {

123

124 if (!backend_->newFrame()) {

125 return;

126 }

127

128 // Create a full-viewport DockSpace so widgets can be docked to window edges

129 if (enableDockSpace_) {

130 ImGui::DockSpaceOverViewport(0, ImGui::GetMainViewport(),

131 ImGuiDockNodeFlags_PassthruCentralNode);

132 }

133

134 for (const auto it : widgets_) {

135 it->draw();

136 }

137

138 ImGui::Render();

139 backend_->renderDrawData(ImGui::GetDrawData());

140 }

141

142 };

143

144

145}

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