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Marked the weird IMGUI_ONCE_UPON_A_FRAME helper macro as obsolete. prefer using the more explicit ImGuiOnceUponAFrame. Removed the broken __LINE__ from IMGUI_ONCE_UPON_A_FRAME

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This commit is contained in:
omar 2017-08-16 17:51:44 +08:00
parent a85a14370b
commit 68bf5ecbc1
3 changed files with 14 additions and 15 deletions
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1
imgui.cpp
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@ -204,6 +204,7 @@
Here is a change-log of API breaking changes, if you are using one of the functions listed, expect to have to fix some code.
Also read releases logs https://github.com/ocornut/imgui/releases for more details.
- 2017/08/15 (1.51) - marked the weird IMGUI_ONCE_UPON_A_FRAME helper macro as obsolete. prefer using the more explicit ImGuiOnceUponAFrame.
- 2017/08/15 (1.51) - changed parameter order for BeginPopupContextWindow(), note that most uses relied on default parameters completely.
- 2017/08/13 (1.51) - renamed ImGuiCol_Columns_*** to ImGuiCol_Separator_***
- 2017/08/11 (1.51) - renamed ImGuiSetCond_*** types and flags to ImGuiCond_***. Kept redirection enums (will obsolete).

17
imgui.h
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@ -924,15 +924,11 @@ public:
inline iterator insert(const_iterator it, const value_type& v) { IM_ASSERT(it >= Data && it <= Data+Size); const ptrdiff_t off = it - Data; if (Size == Capacity) reserve(Capacity ? Capacity * 2 : 4); if (off < (int)Size) memmove(Data + off + 1, Data + off, ((size_t)Size - (size_t)off) * sizeof(value_type)); Data[off] = v; Size++; return Data + off; }
};
// Helper: execute a block of code at maximum once a frame
// Convenient if you want to quickly create an UI within deep-nested code that runs multiple times every frame.
// Helper: execute a block of code at maximum once a frame. Convenient if you want to quickly create an UI within deep-nested code that runs multiple times every frame.
// Usage:
// IMGUI_ONCE_UPON_A_FRAME
// {
// // code block will be executed one per frame
// }
// Attention! the macro expands into 2 statement so make sure you don't use it within e.g. an if() statement without curly braces.
#define IMGUI_ONCE_UPON_A_FRAME static ImGuiOnceUponAFrame imgui_oaf##__LINE__; if (imgui_oaf##__LINE__)
// static ImGuiOnceUponAFrame oaf;
// if (oaf)
// ImGui::Text("This will be called only once per frame");
struct ImGuiOnceUponAFrame
{
ImGuiOnceUponAFrame() { RefFrame = -1; }
@ -940,6 +936,11 @@ struct ImGuiOnceUponAFrame
operator bool() const { int current_frame = ImGui::GetFrameCount(); if (RefFrame == current_frame) return false; RefFrame = current_frame; return true; }
};
// Helper macro for ImGuiOnceUponAFrame. Attention: The macro expands into 2 statement so make sure you don't use it within e.g. an if() statement without curly braces.
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS // Will obsolete
#define IMGUI_ONCE_UPON_A_FRAME static ImGuiOnceUponAFrame imgui_oaf; if (imgui_oaf)
#endif
// Helper: Parse and apply text filters. In format "aaaaa[,bbbb][,ccccc]"
struct ImGuiTextFilter
{

11
imgui_demo.cpp
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@ -308,14 +308,11 @@ void ImGui::ShowTestWindow(bool* p_open)
ImGui::EndTooltip();
}
// Testing IMGUI_ONCE_UPON_A_FRAME macro
// Testing ImGuiOnceUponAFrame helper.
//static ImGuiOnceUponAFrame once;
//for (int i = 0; i < 5; i++)
//{
// IMGUI_ONCE_UPON_A_FRAME
// {
// ImGui::Text("This will be displayed only once.");
// }
//}
// if (once)
// ImGui::Text("This will be displayed only once.");
ImGui::Separator();