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Make macros reusable for custom sugars
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@mnesarco
mnesarco committed Sep 10, 2021
1 parent f0d8a03 commit 28691f8
Showing 1 changed file with 54 additions and 68 deletions.
122 changes: 54 additions & 68 deletions imgui_sugar.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -75,99 +75,85 @@ namespace ImGuiSugar
// +----------------------+-------------------+-----------------+---------------------+
// | BEGIN | END | ALWAYS | __VA_ARGS__ |
// +----------------------+-------------------+-----------------+---------------------+
// | ImGui::Begin*/Push* | ImGui::End*/Pop* | Is call to END | ImGui::Begin*/Push* |
// | Begin*/Push* | End*/Pop* | Is call to END | Begin*/Push* |
// | function name | function name | unconditional? | function arguments |
// +----------------------+-------------------+-----------------+---------------------+

#define IMGUI_SUGAR_SCOPED_BOOL(BEGIN, END, ALWAYS, ...) \
if (const ImGuiSugar::BooleanGuard<ALWAYS> _ui_scope_guard = {ImGui::BEGIN(__VA_ARGS__), &ImGui::END})
if (const ImGuiSugar::BooleanGuard<ALWAYS> _ui_scope_guard = {BEGIN(__VA_ARGS__), &END})

#define IMGUI_SUGAR_SCOPED_BOOL_0(BEGIN, END, ALWAYS) \
if (const ImGuiSugar::BooleanGuard<ALWAYS> _ui_scope_guard = {ImGui::BEGIN(), &ImGui::END})
if (const ImGuiSugar::BooleanGuard<ALWAYS> _ui_scope_guard = {BEGIN(), &END})

#define IMGUI_SUGAR_SCOPED_VOID_N(BEGIN, END, ...) \
if (const ImGuiSugar::BooleanGuard<true> _ui_scope_guard = {IMGUI_SUGAR_ES(ImGui::BEGIN, __VA_ARGS__), &ImGui::END})
if (const ImGuiSugar::BooleanGuard<true> _ui_scope_guard = {IMGUI_SUGAR_ES(BEGIN, __VA_ARGS__), &END})

#define IMGUI_SUGAR_SCOPED_VOID_0(BEGIN, END) \
if (const ImGuiSugar::BooleanGuard<true> _ui_scope_guard = {IMGUI_SUGAR_ES_0(ImGui::BEGIN), &ImGui::END})
if (const ImGuiSugar::BooleanGuard<true> _ui_scope_guard = {IMGUI_SUGAR_ES_0(BEGIN), &END})

#define IMGUI_SUGAR_PARENT_SCOPED_VOID_N(BEGIN, END, ...) \
const ImGuiSugar::BooleanGuard<true> IMGUI_SUGAR_CONCAT1(_ui_scope_, __LINE__) = {IMGUI_SUGAR_ES(ImGui::BEGIN, __VA_ARGS__), &ImGui::END}
const ImGuiSugar::BooleanGuard<true> IMGUI_SUGAR_CONCAT1(_ui_scope_, __LINE__) = {IMGUI_SUGAR_ES(BEGIN, __VA_ARGS__), &END}

// ---------------------------------------------------------------------------
// [SECTION] ImGui DSL
// ----------------------------------------------------------------------------

// Self scoped blocks

#define with_Window(...) IMGUI_SUGAR_SCOPED_BOOL(Begin, End, true, __VA_ARGS__)
#define with_Child(...) IMGUI_SUGAR_SCOPED_BOOL(BeginChild, EndChild, true, __VA_ARGS__)
#define with_ChildFrame(...) IMGUI_SUGAR_SCOPED_BOOL(BeginChildFrame, EndChildFrame, true, __VA_ARGS__)
#define with_Combo(...) IMGUI_SUGAR_SCOPED_BOOL(BeginCombo, EndCombo, false, __VA_ARGS__)
#define with_ListBox(...) IMGUI_SUGAR_SCOPED_BOOL(BeginListBox, EndListBox, false, __VA_ARGS__)
#define with_Menu(...) IMGUI_SUGAR_SCOPED_BOOL(BeginMenu, EndMenu, false, __VA_ARGS__)
#define with_Popup(...) IMGUI_SUGAR_SCOPED_BOOL(BeginPopup, EndPopup, false, __VA_ARGS__)
#define with_PopupModal(...) IMGUI_SUGAR_SCOPED_BOOL(BeginPopupModal, EndPopup, false, __VA_ARGS__)
#define with_PopupContextItem(...) IMGUI_SUGAR_SCOPED_BOOL(BeginPopupContextItem, EndPopup, false, __VA_ARGS__)
#define with_PopupContextWindow(...) IMGUI_SUGAR_SCOPED_BOOL(BeginPopupContextWindow, EndPopup, false, __VA_ARGS__)
#define with_PopupContextVoid(...) IMGUI_SUGAR_SCOPED_BOOL(BeginPopupContextVoid, EndPopup, false, __VA_ARGS__)
#define with_Table(...) IMGUI_SUGAR_SCOPED_BOOL(BeginTable, EndTable, false, __VA_ARGS__)
#define with_TabBar(...) IMGUI_SUGAR_SCOPED_BOOL(BeginTabBar, EndTabBar, false, __VA_ARGS__)
#define with_TabItem(...) IMGUI_SUGAR_SCOPED_BOOL(BeginTabItem, EndTabItem, false, __VA_ARGS__)
#define with_DragDropSource(...) IMGUI_SUGAR_SCOPED_BOOL(BeginDragDropSource, EndDragDropSource, false, __VA_ARGS__)
#define with_TreeNode(...) IMGUI_SUGAR_SCOPED_BOOL(TreeNode, TreePop, false, __VA_ARGS__)
#define with_TreeNodeV(...) IMGUI_SUGAR_SCOPED_BOOL(TreeNodeV, TreePop, false, __VA_ARGS__)
#define with_TreeNodeEx(...) IMGUI_SUGAR_SCOPED_BOOL(TreeNodeEx, TreePop, false, __VA_ARGS__)
#define with_TreeNodeExV(...) IMGUI_SUGAR_SCOPED_BOOL(TreeNodeExV, TreePop, false, __VA_ARGS__)

#define with_DragDropTarget IMGUI_SUGAR_SCOPED_BOOL_0(BeginDragDropTarget, EndDragDropTarget, false)
#define with_MainMenuBar IMGUI_SUGAR_SCOPED_BOOL_0(BeginMainMenuBar, EndMainMenuBar, false)
#define with_MenuBar IMGUI_SUGAR_SCOPED_BOOL_0(BeginMenuBar, EndMenuBar, false)

#define with_Group IMGUI_SUGAR_SCOPED_VOID_0(BeginGroup, EndGroup)
#define with_Tooltip IMGUI_SUGAR_SCOPED_VOID_0(BeginTooltip, EndTooltip)

#define with_Font(...) IMGUI_SUGAR_SCOPED_VOID_N(PushFont, PopFont, __VA_ARGS__)
#define with_AllowKeyboardFocus(...) IMGUI_SUGAR_SCOPED_VOID_N(PushAllowKeyboardFocus, PopAllowKeyboardFocus, __VA_ARGS__)
#define with_ButtonRepeat(...) IMGUI_SUGAR_SCOPED_VOID_N(PushButtonRepeat, PopButtonRepeat, __VA_ARGS__)
#define with_ItemWidth(...) IMGUI_SUGAR_SCOPED_VOID_N(PushItemWidth, PopItemWidth, __VA_ARGS__)
#define with_TextWrapPos(...) IMGUI_SUGAR_SCOPED_VOID_N(PushTextWrapPos, PopTextWrapPos, __VA_ARGS__)
#define with_ID(...) IMGUI_SUGAR_SCOPED_VOID_N(PushID, PopID, __VA_ARGS__)
#define with_ClipRect(...) IMGUI_SUGAR_SCOPED_VOID_N(PushClipRect, PopClipRect, __VA_ARGS__)
#define with_TextureID(...) IMGUI_SUGAR_SCOPED_VOID_N(PushTextureID, PopTextureID, __VA_ARGS__)
#define with_Window(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::Begin, ImGui::End, true, __VA_ARGS__)
#define with_Child(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginChild, ImGui::EndChild, true, __VA_ARGS__)
#define with_ChildFrame(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginChildFrame, ImGui::EndChildFrame, true, __VA_ARGS__)
#define with_Combo(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginCombo, ImGui::EndCombo, false, __VA_ARGS__)
#define with_ListBox(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginListBox, ImGui::EndListBox, false, __VA_ARGS__)
#define with_Menu(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginMenu, ImGui::EndMenu, false, __VA_ARGS__)
#define with_Popup(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginPopup, ImGui::EndPopup, false, __VA_ARGS__)
#define with_PopupModal(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginPopupModal, ImGui::EndPopup, false, __VA_ARGS__)
#define with_PopupContextItem(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginPopupContextItem, ImGui::EndPopup, false, __VA_ARGS__)
#define with_PopupContextWindow(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginPopupContextWindow, ImGui::EndPopup, false, __VA_ARGS__)
#define with_PopupContextVoid(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginPopupContextVoid, ImGui::EndPopup, false, __VA_ARGS__)
#define with_Table(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginTable, ImGui::EndTable, false, __VA_ARGS__)
#define with_TabBar(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginTabBar, ImGui::EndTabBar, false, __VA_ARGS__)
#define with_TabItem(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginTabItem, ImGui::EndTabItem, false, __VA_ARGS__)
#define with_DragDropSource(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::BeginDragDropSource, ImGui::EndDragDropSource, false, __VA_ARGS__)
#define with_TreeNode(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::TreeNode, ImGui::TreePop, false, __VA_ARGS__)
#define with_TreeNodeV(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::TreeNodeV, ImGui::TreePop, false, __VA_ARGS__)
#define with_TreeNodeEx(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::TreeNodeEx, ImGui::TreePop, false, __VA_ARGS__)
#define with_TreeNodeExV(...) IMGUI_SUGAR_SCOPED_BOOL(ImGui::TreeNodeExV, ImGui::TreePop, false, __VA_ARGS__)

#define with_DragDropTarget IMGUI_SUGAR_SCOPED_BOOL_0(ImGui::BeginDragDropTarget, ImGui::EndDragDropTarget, false)
#define with_MainMenuBar IMGUI_SUGAR_SCOPED_BOOL_0(ImGui::BeginMainMenuBar, ImGui::EndMainMenuBar, false)
#define with_MenuBar IMGUI_SUGAR_SCOPED_BOOL_0(ImGui::BeginMenuBar, ImGui::EndMenuBar, false)

#define with_Group IMGUI_SUGAR_SCOPED_VOID_0(ImGui::BeginGroup, ImGui::EndGroup)
#define with_Tooltip IMGUI_SUGAR_SCOPED_VOID_0(ImGui::BeginTooltip, ImGui::EndTooltip)

#define with_Font(...) IMGUI_SUGAR_SCOPED_VOID_N(ImGui::PushFont, ImGui::PopFont, __VA_ARGS__)
#define with_AllowKeyboardFocus(...) IMGUI_SUGAR_SCOPED_VOID_N(ImGui::PushAllowKeyboardFocus, ImGui::PopAllowKeyboardFocus, __VA_ARGS__)
#define with_ButtonRepeat(...) IMGUI_SUGAR_SCOPED_VOID_N(ImGui::PushButtonRepeat, ImGui::PopButtonRepeat, __VA_ARGS__)
#define with_ItemWidth(...) IMGUI_SUGAR_SCOPED_VOID_N(ImGui::PushItemWidth, ImGui::PopItemWidth, __VA_ARGS__)
#define with_TextWrapPos(...) IMGUI_SUGAR_SCOPED_VOID_N(ImGui::PushTextWrapPos, ImGui::PopTextWrapPos, __VA_ARGS__)
#define with_ID(...) IMGUI_SUGAR_SCOPED_VOID_N(ImGui::PushID, ImGui::PopID, __VA_ARGS__)
#define with_ClipRect(...) IMGUI_SUGAR_SCOPED_VOID_N(ImGui::PushClipRect, ImGui::PopClipRect, __VA_ARGS__)
#define with_TextureID(...) IMGUI_SUGAR_SCOPED_VOID_N(ImGui::PushTextureID, ImGui::PopTextureID, __VA_ARGS__)

// Non self scoped guards (managed by parent scope)

#define set_Font(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(PushFont, PopFont, __VA_ARGS__)
#define set_AllowKeyboardFocus(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(PushAllowKeyboardFocus, PopAllowKeyboardFocus, __VA_ARGS__)
#define set_ButtonRepeat(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(PushButtonRepeat, PopButtonRepeat, __VA_ARGS__)
#define set_ItemWidth(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(PushItemWidth, PopItemWidth, __VA_ARGS__)
#define set_TextWrapPos(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(PushTextWrapPos, PopTextWrapPos, __VA_ARGS__)
#define set_ID(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(PushID, PopID, __VA_ARGS__)
#define set_ClipRect(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(PushClipRect, PopClipRect, __VA_ARGS__)
#define set_TextureID(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(PushTextureID, PopTextureID, __VA_ARGS__)
#define set_Font(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(ImGui::PushFont, ImGui::PopFont, __VA_ARGS__)
#define set_AllowKeyboardFocus(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(ImGui::PushAllowKeyboardFocus, ImGui::PopAllowKeyboardFocus, __VA_ARGS__)
#define set_ButtonRepeat(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(ImGui::PushButtonRepeat, ImGui::PopButtonRepeat, __VA_ARGS__)
#define set_ItemWidth(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(ImGui::PushItemWidth, ImGui::PopItemWidth, __VA_ARGS__)
#define set_TextWrapPos(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(ImGui::PushTextWrapPos, ImGui::PopTextWrapPos, __VA_ARGS__)
#define set_ID(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(ImGui::PushID, ImGui::PopID, __VA_ARGS__)
#define set_ClipRect(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(ImGui::PushClipRect, ImGui::PopClipRect, __VA_ARGS__)
#define set_TextureID(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(ImGui::PushTextureID, ImGui::PopTextureID, __VA_ARGS__)

// Special case (overloaded functions StyleColor and StyleVar)

#define set_StyleColor(...) \
const ImGuiSugar::BooleanGuard<true> \
IMGUI_SUGAR_CONCAT1(_ui_scope_, __LINE__) = \
{IMGUI_SUGAR_ES(ImGui::PushStyleColor, __VA_ARGS__), &ImGuiSugar::PopStyleColor}

#define set_StyleVar(...) \
const ImGuiSugar::BooleanGuard<true> \
IMGUI_SUGAR_CONCAT1(_ui_scope_, __LINE__) = \
{IMGUI_SUGAR_ES(ImGui::PushStyleVar, __VA_ARGS__), &ImGuiSugar::PopStyleVar}

#define with_StyleColor(...) \
if (const ImGuiSugar::BooleanGuard<true> \
IMGUI_SUGAR_CONCAT1(_ui_scope_, __LINE__) = \
{IMGUI_SUGAR_ES(ImGui::PushStyleColor, __VA_ARGS__), &ImGuiSugar::PopStyleColor})

#define with_StyleVar(...) \
if (const ImGuiSugar::BooleanGuard<true> \
IMGUI_SUGAR_CONCAT1(_ui_scope_, __LINE__) = \
{IMGUI_SUGAR_ES(ImGui::PushStyleVar, __VA_ARGS__), &ImGuiSugar::PopStyleVar})
#define set_StyleColor(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(ImGui::PushStyleColor, ImGuiSugar::PopStyleColor, __VA_ARGS__)
#define set_StyleVar(...) IMGUI_SUGAR_PARENT_SCOPED_VOID_N(ImGui::PushStyleVar, ImGuiSugar::PopStyleVar, __VA_ARGS__)

#define with_StyleColor(...) IMGUI_SUGAR_SCOPED_VOID_N(ImGui::PushStyleColor, ImGuiSugar::PopStyleColor, __VA_ARGS__)
#define with_StyleVar(...) IMGUI_SUGAR_SCOPED_VOID_N(ImGui::PushStyleVar, ImGuiSugar::PopStyleVar, __VA_ARGS__)

// Non RAII

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