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Settings: Made it possible to load window .ini data mid-frame. Added clear and post-read handlers. (#2573)

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This commit is contained in:
omar 2020-05-07 21:28:17 +02:00
parent b6a04d7750
commit d33021d828
2 changed files with 40 additions and 5 deletions
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40
imgui.cpp
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@ -917,6 +917,8 @@ static void AddWindowToSortBuffer(ImVector<ImGuiWindow*>* out_sorted
static ImRect GetViewportRect();
// Settings
static void WindowSettingsHandler_ClearAll(ImGuiContext*, ImGuiSettingsHandler*);
static void WindowSettingsHandler_ApplyAll(ImGuiContext*, ImGuiSettingsHandler*);
static void* WindowSettingsHandler_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name);
static void WindowSettingsHandler_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line);
static void WindowSettingsHandler_WriteAll(ImGuiContext*, ImGuiSettingsHandler*, ImGuiTextBuffer* buf);
@ -3941,6 +3943,8 @@ void ImGui::Initialize(ImGuiContext* context)
ImGuiSettingsHandler ini_handler;
ini_handler.TypeName = "Window";
ini_handler.TypeHash = ImHashStr("Window");
ini_handler.ClearAllFn = WindowSettingsHandler_ClearAll;
ini_handler.ApplyAllFn = WindowSettingsHandler_ApplyAll;
ini_handler.ReadOpenFn = WindowSettingsHandler_ReadOpen;
ini_handler.ReadLineFn = WindowSettingsHandler_ReadLine;
ini_handler.WriteAllFn = WindowSettingsHandler_WriteAll;
@ -9707,9 +9711,9 @@ void ImGui::ClearIniSettings()
{
ImGuiContext& g = *GImGui;
g.SettingsIniData.clear();
for (int i = 0; i != g.Windows.Size; i++)
g.Windows[i]->SettingsOffset = -1;
g.SettingsWindows.clear();
for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
if (g.SettingsHandlers[handler_n].ClearAllFn)
g.SettingsHandlers[handler_n].ClearAllFn(&g, &g.SettingsHandlers[handler_n]);
}
void ImGui::LoadIniSettingsFromDisk(const char* ini_filename)
@ -9727,7 +9731,8 @@ void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
{
ImGuiContext& g = *GImGui;
IM_ASSERT(g.Initialized);
IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
//IM_ASSERT(!g.WithinFrameScope && "Cannot be called between NewFrame() and EndFrame()");
//IM_ASSERT(g.SettingsLoaded == false && g.FrameCount == 0);
// For user convenience, we allow passing a non zero-terminated string (hence the ini_size parameter).
// For our convenience and to make the code simpler, we'll also write zero-terminators within the buffer. So let's create a writable copy..
@ -9779,6 +9784,11 @@ void ImGui::LoadIniSettingsFromMemory(const char* ini_data, size_t ini_size)
// [DEBUG] Restore untouched copy so it can be browsed in Metrics (not strictly necessary)
memcpy(buf, ini_data, ini_size);
// Call post-read handlers
for (int handler_n = 0; handler_n < g.SettingsHandlers.Size; handler_n++)
if (g.SettingsHandlers[handler_n].ApplyAllFn)
g.SettingsHandlers[handler_n].ApplyAllFn(&g, &g.SettingsHandlers[handler_n]);
}
void ImGui::SaveIniSettingsToDisk(const char* ini_filename)
@ -9814,11 +9824,33 @@ const char* ImGui::SaveIniSettingsToMemory(size_t* out_size)
return g.SettingsIniData.c_str();
}
static void WindowSettingsHandler_ClearAll(ImGuiContext* ctx, ImGuiSettingsHandler*)
{
ImGuiContext& g = *ctx;
for (int i = 0; i != g.Windows.Size; i++)
g.Windows[i]->SettingsOffset = -1;
g.SettingsWindows.clear();
}
// Apply to existing windows (if any)
static void WindowSettingsHandler_ApplyAll(ImGuiContext* ctx, ImGuiSettingsHandler*)
{
ImGuiContext& g = *ctx;
for (ImGuiWindowSettings* settings = g.SettingsWindows.begin(); settings != NULL; settings = g.SettingsWindows.next_chunk(settings))
if (settings->WantApply)
{
if (ImGuiWindow* window = ImGui::FindWindowByID(settings->ID))
ApplyWindowSettings(window, settings);
settings->WantApply = false;
}
}
static void* WindowSettingsHandler_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
{
ImGuiWindowSettings* settings = ImGui::FindWindowSettings(ImHashStr(name));
if (!settings)
settings = ImGui::CreateNewWindowSettings(name);
settings->WantApply = true;
return (void*)settings;
}

5
imgui_internal.h
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@ -824,8 +824,9 @@ struct ImGuiWindowSettings
ImVec2ih Pos;
ImVec2ih Size;
bool Collapsed;
bool WantApply; // Set when loaded from .ini data (to enable merging/loading .ini data into an already running context)
ImGuiWindowSettings() { ID = 0; Pos = Size = ImVec2ih(0, 0); Collapsed = false; }
ImGuiWindowSettings() { ID = 0; Pos = Size = ImVec2ih(0, 0); Collapsed = WantApply = false; }
char* GetName() { return (char*)(this + 1); }
};
@ -833,6 +834,8 @@ struct ImGuiSettingsHandler
{
const char* TypeName; // Short description stored in .ini file. Disallowed characters: '[' ']'
ImGuiID TypeHash; // == ImHashStr(TypeName)
void (*ClearAllFn)(ImGuiContext* ctx, ImGuiSettingsHandler* handler); // Clear all settings data
void (*ApplyAllFn)(ImGuiContext* ctx, ImGuiSettingsHandler* handler); // Read: Called after reading (in registration order)
void* (*ReadOpenFn)(ImGuiContext* ctx, ImGuiSettingsHandler* handler, const char* name); // Read: Called when entering into a new ini entry e.g. "[Window][Name]"
void (*ReadLineFn)(ImGuiContext* ctx, ImGuiSettingsHandler* handler, void* entry, const char* line); // Read: Called for every line of text within an ini entry
void (*WriteAllFn)(ImGuiContext* ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* out_buf); // Write: Output every entries into 'out_buf'