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Initialization happens during CreateContext(), which makes it easier for platform layers to interact with the context during their initialization.

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This commit is contained in:
omar 2018-02-18 23:25:48 +01:00
parent 1399c9c8a9
commit b33f0e215f
2 changed files with 13 additions and 6 deletions
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17
imgui.cpp
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@ -2636,6 +2636,7 @@ ImGuiContext* ImGui::CreateContext(ImFontAtlas* shared_font_atlas)
ImGuiContext* ctx = IM_NEW(ImGuiContext)(shared_font_atlas);
if (GImGui == NULL)
SetCurrentContext(ctx);
Initialize(ctx);
return ctx;
}
@ -3280,6 +3281,7 @@ void ImGui::NewFrame()
// Check user data
// (We pass an error message in the assert expression as a trick to get it visible to programmers who are not using a debugger, as most assert handlers display their argument)
IM_ASSERT(g.Initialized);
IM_ASSERT(g.IO.DeltaTime >= 0.0f && "Need a positive DeltaTime (zero is tolerated but will cause some timing issues)");
IM_ASSERT(g.IO.DisplaySize.x >= 0.0f && g.IO.DisplaySize.y >= 0.0f && "Invalid DisplaySize value");
IM_ASSERT(g.IO.Fonts->Fonts.Size > 0 && "Font Atlas not built. Did you call io.Fonts->GetTexDataAsRGBA32() / GetTexDataAsAlpha8() ?");
@ -3294,9 +3296,13 @@ void ImGui::NewFrame()
if (g.IO.NavFlags & ImGuiNavFlags_EnableKeyboard)
IM_ASSERT(g.IO.KeyMap[ImGuiKey_Space] != -1 && "ImGuiKey_Space is not mapped, required for keyboard navigation.");
// Initialize on first frame
if (!g.Initialized)
Initialize(&g);
// Load settings on first frame
if (!g.SettingsLoaded)
{
IM_ASSERT(g.SettingsWindows.empty());
LoadIniSettingsFromDisk(g.IO.IniFilename);
g.SettingsLoaded = true;
}
g.Time += g.IO.DeltaTime;
g.FrameCount += 1;
@ -3602,6 +3608,7 @@ static void SettingsHandlerWindow_WriteAll(ImGuiContext* imgui_ctx, ImGuiSetting
void ImGui::Initialize(ImGuiContext* context)
{
ImGuiContext& g = *context;
IM_ASSERT(!g.Initialized && !g.SettingsLoaded);
g.LogClipboard = IM_NEW(ImGuiTextBuffer)();
// Add .ini handle for ImGuiWindow type
@ -3613,9 +3620,6 @@ void ImGui::Initialize(ImGuiContext* context)
ini_handler.WriteAllFn = SettingsHandlerWindow_WriteAll;
g.SettingsHandlers.push_front(ini_handler);
// Load .ini file
IM_ASSERT(g.SettingsWindows.empty());
LoadIniSettingsFromDisk(g.IO.IniFilename);
g.Initialized = true;
}
@ -3765,6 +3769,7 @@ static void LoadIniSettingsFromMemory(const char* buf_readonly)
}
}
ImGui::MemFree(buf);
g.SettingsLoaded = true;
}
static void SaveIniSettingsToDisk(const char* ini_filename)

2
imgui_internal.h
View File

@ -687,6 +687,7 @@ struct ImGuiContext
ImVec2 OsImePosRequest, OsImePosSet; // Cursor position request & last passed to the OS Input Method Editor
// Settings
bool SettingsLoaded;
float SettingsDirtyTimer; // Save .ini Settings on disk when time reaches zero
ImVector<ImGuiWindowSettings> SettingsWindows; // .ini settings for ImGuiWindow
ImVector<ImGuiSettingsHandler> SettingsHandlers; // List of .ini settings handlers
@ -789,6 +790,7 @@ struct ImGuiContext
TooltipOverrideCount = 0;
OsImePosRequest = OsImePosSet = ImVec2(-1.0f, -1.0f);
SettingsLoaded = false;
SettingsDirtyTimer = 0.0f;
LogEnabled = false;