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Update save and load settings functions #2

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246 changes: 196 additions & 50 deletions ImGuiSharp.Shared/ImGui.cs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,6 @@
namespace ImGui
using System.IO;

namespace ImGui
{
internal partial class ImGui
{
Expand Down Expand Up @@ -254,8 +256,8 @@ public static ImGui Instance
}
}

internal ImGuiState State = new ImGuiState();
internal static ImFontAtlas ImDefaultFontAtlas = new ImFontAtlas();
internal ImGuiState State = new ImGuiState();
internal static ImFontAtlas ImDefaultFontAtlas = new ImFontAtlas();
//ImGuiState* GImGui = &GImDefaultState;

// Statically allocated default font atlas. This is merely a maneuver to keep ImFontAtlas definition at the bottom of the .h file (otherwise it'd be inside ImGuiIO)
Expand Down Expand Up @@ -293,7 +295,8 @@ public void NewFrame()
//IM_PLACEMENT_NEW(g.LogClipboard) ImGuiTextBuffer();

//TODO: System.Diagnostics.Debug.Assert(g.Settings.empty());
//TODO: LoadSettings();
//TODO:
LoadSettings();
g.Initialized = true;
}

Expand Down Expand Up @@ -3327,7 +3330,7 @@ internal int GetFrameCount()
}

// NB: behavior of ImGui after Shutdown() is not tested/guaranteed at the moment. This function is merely here to free heap allocations.
void Shutdown()
public void Shutdown()
{
ImGuiState g = State;

Expand All @@ -3339,7 +3342,7 @@ void Shutdown()
if (!g.Initialized)
return;

SaveSettings();
SaveSettings(g);

for (int i = 0; i < g.Windows.Size; i++)
{
Expand Down Expand Up @@ -3507,55 +3510,202 @@ bool IsWindowContentHoverable(ImGuiWindow window)
// FIXME: Write something less rubbish
void LoadSettings()
{

ImGuiState g = State; // get access to state
string filename = g.IO.IniFilename; // get filename

if (filename == null) // file name is not set
return; // quit

if (!File.Exists(filename)) // the file does not exist
{
File.Create(filename);
return; // quit
}

if (new FileInfo(filename).Length == 0) // the file is empty
return; // quit

StreamReader f = new StreamReader(filename); // open the file for reading

ImGuiIniData settings = null; // create settings holder

while(!f.EndOfStream) // while the whole file has not been read
{
string line = f.ReadLine(); // read next line

if (line.StartsWith("[") && line.EndsWith("]")) // the line is a name setting
{
char[] braces = { '[', ']' }; // characters to trim off string
string name = line.Trim(braces); // trim off characters
settings = FindWindowSettings(name); // find a setting ID that matches name
if (settings == null) // the setting does not exist
settings = AddWindowSettings(name); // create the setting
}
else if (settings != null) // there is a current setting
{
if(line.StartsWith("Pos=")) // the position line
{
string[] parts = line.Split(new[] // split the line into substrings
{
'=', ',' // split at the '=' and the ','
});

settings.Pos = new ImVec2( // set the postion
float.Parse(parts[1]), // parse the x value from the string
float.Parse(parts[2])); // parse the y value from the string
}
else if (line.StartsWith("Size=")) // the size line
{
string[] parts = line.Split(new[] // split the line into substrings
{
'=', ',' // split at the '=' and the ','
});

settings.Size = new ImVec2( // set the size
float.Parse(parts[1]), // parse the x value from the string
float.Parse(parts[2])); // parse the y value from the string
}
else if (line.StartsWith("Collapsed="))
{
string[] parts = line.Split(new[] // split the line into substrings
{
'=' // split at the '='
});

bool value; // holder for collapsed value
if (parts[1] == "False") // the read in string states false
value = false; // value is false
else // the read in string states something else
value = true; // value is true
settings.Collapsed = value; // set collapsed
}
}
}

f.Close(); // close the file

//TODO: LoadSettings()
// ImGuiState g = State;
// const char* filename = g.IO.IniFilename;
// if (!filename)
// return;
//const char* filename = g.IO.IniFilename;

// int file_size;
// char* file_data = (char*)ImLoadFileToMemory(filename, "rb", &file_size, 1);
// if (!file_data)
// return;
//if (!filename)
// return;

// ImGuiIniData* settings = NULL;
// const char* buf_end = file_data + file_size;
// for (const char* line_start = file_data; line_start < buf_end; )
//int file_size;
//char* file_data = (char*)ImLoadFileToMemory(filename, "rb", &file_size, 1);
//if (!file_data)
// return;

//ImGuiIniData* settings = NULL;
//const char* buf_end = file_data + file_size;
//for (const char* line_start = file_data; line_start < buf_end; )
//{
// const char* line_end = line_start;
// while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
// line_end++;

// if (line_start[0] == '[' && line_end > line_start && line_end[-1] == ']')
// {
// char name[64];
// ImFormatString(name, IM_ARRAYSIZE(name), "%.*s", (int)(line_end - line_start - 2), line_start + 1);
// settings = FindWindowSettings(name);
// if (!settings)
// settings = AddWindowSettings(name);
// }
// else if (settings)
// {
// float x, y;
// int i;
// if (sscanf(line_start, "Pos=%f,%f", &x, &y) == 2)
// settings->Pos = ImVec2(x, y);
// else if (sscanf(line_start, "Size=%f,%f", &x, &y) == 2)
// settings->Size = ImMax(ImVec2(x, y), g.Style.WindowMinSize);
// else if (sscanf(line_start, "Collapsed=%d", &i) == 1)
// settings->Collapsed = (i != 0);
// }

// line_start = line_end + 1;
// }
// const char* line_end = line_start;
// while (line_end < buf_end && *line_end != '\n' && *line_end != '\r')
// line_end++;

// if (line_start[0] == '[' && line_end > line_start && line_end[-1] == ']')
// {
// char name[64];
// ImFormatString(name, IM_ARRAYSIZE(name), "%.*s", (int)(line_end - line_start - 2), line_start + 1);
// settings = FindWindowSettings(name);
// if (!settings)
// settings = AddWindowSettings(name);
// }
// else if (settings)
// {
// float x, y;
// int i;
// if (sscanf(line_start, "Pos=%f,%f", &x, &y) == 2)
// settings->Pos = ImVec2(x, y);
// else if (sscanf(line_start, "Size=%f,%f", &x, &y) == 2)
// settings->Size = ImMax(ImVec2(x, y), g.Style.WindowMinSize);
// else if (sscanf(line_start, "Collapsed=%d", &i) == 1)
// settings->Collapsed = (i != 0);
// }

// ImGui::MemFree(file_data);
// line_start = line_end + 1;
//}

//ImGui::MemFree(file_data);
}

static void SaveSettings()
static void SaveSettings(ImGuiState state)
{
ImGuiState g = state; // get access to state

string filename = g.IO.IniFilename; // get filename
if (filename == null) // file name is not set
return; // quit

for (int i = 0; i != g.Windows.Size; i++) // Gather data from windows that were active during this session
{
ImGuiWindow window = g.Windows[i]; // grab the window

ImGuiWindowFlags saveflag = ImGuiWindowFlags // get the value of don't save settings flag
.ImGuiWindowFlags_NoSavedSettings;

if ((window.Flags &saveflag).Equals(1)) // window flags has the don't save settings flag set
continue; // skip this window

uint ID = Hash(0, window.Name); // get the ID of the window

ImGuiIniData settings = null; // create a settings holder

for (int n = 0; n != g.Settings.Size; n++) // of all the settings objects in the container
if (g.Settings[i].ID == ID) // the droid you were looking for
settings = g.Settings[i]; // save it into the holder

if(settings != null) // the setting object was found
{
settings.Pos = window.Pos; // transfer position value
settings.Size = window.SizeFull; // transfer size value
settings.Collapsed = window.Collapsed; // transfer collapsed value
}
}

if (!File.Exists(filename)) // ini file does not exist
File.Create(filename); // create it

StreamWriter f = new StreamWriter(filename); // open the file for writing

for (int i = 0; i != g.Settings.Size; i++) // loop through all of the settings in container
{
ImGuiIniData settings = g.Settings[i]; // grab a settings object
if (settings.Pos.x == 3.402823466e+38F) // if the position is some max value
continue; // skip it

string name = settings.Name, // get the name value
delimiter = "###"; // delimiter for IDs with same name

if (name.Contains(delimiter)) // name contains delimiter
{
string[] substrs = // save the substrings
name.Split(new[] { delimiter }, 0); // without the delimiter
name = ""; // clear the name

for (int n = 0; n < substrs.Length; n++) // loop through the substrings and combine them
{
if (n == 0) name += substrs[n]; // the first substring doesn't need a preceding whitespace
else name += " " + substrs[n]; // all other substrings need a preceding whitespace
}
}

f.WriteLine(string.Format("[{0}]", name)); // write name value to file
f.WriteLine(string.Format("Pos={0},{1}", // write position value to file
(int)settings.Pos.x, (int)settings.Pos.y));
f.WriteLine(string.Format("Size={0},{1}", // write size value to file
(int)settings.Size.x, (int)settings.Size.y));
f.WriteLine(string.Format("Collapsed={0}", // write collasped value to file
settings.Collapsed));
f.WriteLine(); // separate entries with a blank line
}

f.Close(); // close the file

//TODO: SaveSettings()
// ImGuiState & g = *GImGui;

// const char* filename = g.IO.IniFilename;
// if (!filename)
// return;
Expand Down Expand Up @@ -4290,8 +4440,6 @@ bool InvisibleButton(string str_id, ImVec2 size_arg)
return pressed;
}



void TextColored(ImVec4 col, string text, params object[] args)
{
if (args != null && args.Length > 0)
Expand Down Expand Up @@ -4436,7 +4584,6 @@ void SetNextTreeNodeOpened(bool opened, ImGuiSetCond cond)
g.SetNextTreeNodeOpenedCond = cond != 0 ? cond : ImGuiSetCond.ImGuiSetCond_Always;
}


bool TreeNodeBehaviorIsOpened(uint id, ImGuiTreeNodeFlags flags)
{
// We only write to the tree storage if the user clicks (or explicitely use SetNextTreeNode*** functions)
Expand Down Expand Up @@ -4482,7 +4629,6 @@ bool TreeNodeBehaviorIsOpened(uint id, ImGuiTreeNodeFlags flags)
return opened;
}


// FIXME: Split into CollapsingHeader(label, default_open?) and TreeNodeBehavior(label), obsolete the 4 parameters function.
bool CollapsingHeader(string label, string str_id = null, bool display_frame = true, bool default_open = false)
{
Expand Down Expand Up @@ -5842,4 +5988,4 @@ bool InputTextEx(string label, char[] buf, int buf_size, ImVec2 size_arg, ImGuiI
}

}
}
}