start work on text input

src/dlib

@@ -1 +1 @@
-Subproject commit 6757559089314da06956460c32ff632db7d10f88
+Subproject commit ff94c5cb5e4b3c581521452a2a50b363a09cd8d6

src/editor/buffer.d

@@ -1,25 +1,18 @@
-import dlib.aliases;
+import dlib;
-import dlib.math;
-import dlib.alloc;
-import dlib.util;
 import core.stdc.stdio : EOF;
 import parsing;
 import std.format : sformat;
+import std.math.algebraic : abs;
 
 struct FlatBuffer
 {
 	Tokenizer tk;
-	Arena arena;
+	Arena     arena;
-	u8[]  data;
+	U64Vec2   pos;
-	u64   length;
+	u8[]      data;
-	u64   line_count;
+	u64       length;
-	Range pos;
+	u64       line_count;
-}
+	u64       buf_pos;
-
-struct Range
-{
-	u32 x;
-	u32 y;
 }
 
 struct LineBuffers
@@ -31,7 +24,7 @@ struct LineBuffers
 FlatBuffer
 CreateFlatBuffer(u8[] data)
 {
-	u64 capacity = RoundUp(cast(u64)(data.length) * 2, KB(4));
+	u64 capacity = data.length > 0 ? RoundUp(cast(u64)(data.length) * 2, KB(4)) : KB(4);
 
 	u8[] buf = MAllocArray!(u8)(capacity);
 	buf[0 .. data.length] = data[0 .. data.length];
@@ -70,6 +63,7 @@ CreateLineBuffers(u64 arena_size)
 void
 Insert(FlatBuffer* buffer, u8[] insert, u64 length, u64 pos)
 {
+	Logf("%s %s %s", buffer.length, length, buffer.data.length);
 	if(buffer.length + length > buffer.data.length)
 	{
 		FlatBuffer new_buf = CreateFlatBuffer(buffer.data);
@@ -99,11 +93,11 @@ Insert(FlatBuffer* buffer, u8[] insert, u64 length, u64 pos)
 }
 
 void
-Insert(FlatBuffer* buffer, u8[] insert, u64 length, Range pos)
+Insert(FlatBuffer* buffer, u8[] insert, u64 length, UVec2 pos)
 {
 	assert(pos.y <= buffer.line_count, "Insert failure: y provided is greater than line_count");
 
-	Insert(buffer, insert, length, RangeToPos(buffer, pos));
+	Insert(buffer, insert, length, VecToPos(buffer, pos));
 }
 
 // TODO: handle case for when lines are longer than line buffer
@@ -164,37 +158,150 @@ GetLines(FlatBuffer* buffer, LineBuffers* linebufs, u64 start_line, u64 length)
 	}
 }
 
-u64
+void
-RangeToPos(FlatBuffer* buffer, Range range)
+Move(FlatBuffer* buffer, Input key, Modifier md)
 {
-	u64 buffer_pos;
+	if(md & (MD.LeftShift | MD.RightShift))
-	u32 line, col;
-	for(u64 i = 0; i < buffer.length; i += 1)
 	{
-		if(range.y == line)
+		switch(key)
 		{
-			buffer_pos = i;
+			case Input.Up:
-			break;
+				{
-		}
+				} break;
+			case Input.Down:
+				{
 
-		if(buffer.data.ptr[i] == '\n')
+				} break;
+			case Input.Left:
+				{
+
+				} break;
+			case Input.Right:
+				{
+
+				} break;
+			default: break;
+		}
+	}
+	else if(md & (MD.LeftCtrl | MD.RightCtrl))
+	{
+		switch(key)
 		{
-			line += 1;
+			case Input.Up:
+				{
+				} break;
+			case Input.Down:
+				{
+
+				} break;
+			case Input.Left:
+				{
+
+				} break;
+			case Input.Right:
+				{
+
+				} break;
+			default: break;
+		}
+	}
+	else
+	{
+		switch(key)
+		{
+			case Input.Down:
+			case Input.Up:
+				{
+					if((Input.Up && buffer.pos.y > 0) || (Input.Down && buffer.pos.y < buffer.line_count))
+					{
+						u32 x = buffer.pos.x;
+						buffer.pos.x = 0;
+						buffer.pos.y += key == Input.Down ? 1 : -1;
+						u64 pos = VecToPos(buffer, buffer.pos);
+						u64 i = pos;
+						for(; i < pos+x && buffer.data[i] != '\n'; i += 1) {}
+						buffer.pos.x = cast(u32)(i - pos);
+						buffer.buf_pos = i;
+					}
+				} break;
+			case Input.Left:
+			case Input.Right:
+				{
+					if((Input.Left && buffer.buf_pos > 0) || (Input.Right && buffer.buf_pos < buffer.length))
+					{
+						u64 move = key == Input.Left ? -1 : +1;
+						buffer.buf_pos += move;
+						if(buffer.data[buffer.buf_pos] == '\n')
+						{
+							u64 x = buffer.pos.x;
+							buffer.pos.y += move;
+							buffer.pos.x = 0;
+							if(key == Input.Left)
+							{
+								u64 pos = VecToPos(buffer, buffer.pos);
+								u64 i = pos;
+								for(; i < pos+x && buffer.data[i] != '\n'; i += 1) {}
+								buffer.pos.x = cast(u32)(i - pos);
+								buffer.buf_pos = i;
+							}
+						}
+						else
+						{
+							buffer.pos.x += move;
+						}
+					}
+				} break;
+			default: break;
 		}
 	}
 
-	for(u64 i = buffer_pos; i < buffer.length; i += 1)
+	Logf("%s %s", buffer.buf_pos, buffer.pos.v);
+}
+
+u64
+RelVecToPos(FlatBuffer* buffer, U64Vec2 vec)
+{
+	u64 pos = 0;
+	bool closer_to_start = abs(buffer.pos.y - vec.x) > vec.x;
+	if(closer_to_start)
 	{
-		if(col == range.x)
+		u32 line, col;
+		for(; i < buffer.length; pos += 1)
 		{
-			buffer_pos = i;
+			if(range.y == line)
-			break;
+			{
+				break;
+			}
+
+			if(buffer.data.ptr[pos] == '\n')
+			{
+				line += 1;
+			}
 		}
 
-		col += 1;
+		for(; buffer_pos < buffer.length; pos += 1)
+		{
+			if(col == range.x)
+			{
+				break;
+			}
 
-		assert(buffer.data.ptr[i] != '\n', "Insert FlatBuffer Range failure: x position not in range of line");
+			col += 1;
+
+			assert(buffer.data.ptr[i] != '\n', "Insert FlatBuffer Range failure: x position not in range of line");
+		}
 	}
+	else
+	{
+		u64 move = buffer.pos.y < vec.y || (buffer.pos.y == vec.y && buffer.pos.x < vec.pos.x) ? -1 : +1;
+	}
+
+	return pos;
+}
+
+u64
+VecToPos(FlatBuffer* buffer, U64Vec2 vec)
+{
 
 	return buffer_pos;
 }

src/editor/editor.d

@@ -11,6 +11,7 @@ import ui;
 import widgets : Nil;
 import widgets;
 
+import std.format;
 import std.stdio;
 import std.exception;
 
@@ -22,6 +23,8 @@ struct EditorCtx
 	UIPanel*  base_panel;
 	u64       panel_id;
 	EditState state;
+	u8[128]   input_buf;
+	u32       icount;
 }
 
 struct Editor
@@ -108,6 +111,8 @@ CreateEditor(EditorCtx* ctx)
 	Editor* ed = Alloc!(Editor)(&ctx.arena);
 	
 	ed.arena = CreateArena(MB(4));
+	ed.buf = CreateFlatBuffer([]);
+	ed.linebufs = CreateLineBuffers(MB(1));
 	
 	return ed;
 }
@@ -190,6 +195,20 @@ AddEditor(EditorCtx* ctx, UIPanel* target, Axis2D axis)
 	}
 }
 
+pragma(inline) void
+InsertInputToBuf(EditorCtx* ctx)
+{
+	if(ctx.icount > 0)
+	{
+		UIPanel* p = GetFocusedPanel();
+		if(!Nil(p))
+		{
+			Insert(&p.ed.buf, ctx.input_buf, ctx.icount, 0);
+			ctx.icount = 0;
+		}
+	}
+}
+
 void
 HandleInputs(EditorCtx* ctx, Inputs* inputs)
 {
@@ -202,111 +221,54 @@ HandleInputs(EditorCtx* ctx, Inputs* inputs)
 
 		if (pressed)
 		{
-			switch(key)
+			if(key == Input.Escape)
 			{
-				case Input.i:
+				ctx.state = ES.NormalMode;
-					{
+				InsertInputToBuf(ctx);
-						if(ctx.state == ES.NormalMode)
+				taken = true;
+			}
+			else if(ctx.state == ES.InputMode)
+			{
+				taken = HandleInputMode(ctx, node.value);
+			}
+			else
+			{
+				switch(key)
+				{
+					case Input.i:
 						{
 							ctx.state = ES.InputMode;
 							taken = true;
-						}
+						} break;
-					} break;
+					case Input.Semicolon:
-				case Input.Esc:
-					{
-						if(ctx.state == ES.InputMode || ctx.state == ES.CmdOpen)
 						{
-							ctx.state = ES.NormalMode;
+							if(node.value.md & (MD.LeftShift | MD.RightShift))
-							taken = true;
-						}
-					} break;
-				case Input.Semicolon:
-					{
-						if(node.value.md & (MD.LeftShift | MD.RightShift))
-						{
-							if(ctx.state != ES.NormalMode)
 							{
 								ctx.state = ES.CmdOpen;
 								taken = true;
 							}
-						}
+						} break;
-					} break;
+					case Input.v:
-				case Input.w:
-					{
-						if(ctx.state == ES.NormalMode && node.value.md & (MD.LeftCtrl | MD.RightCtrl))
-						{
-							ctx.state = ES.SetPanelFocus;
-							taken = true;
-						}
-					} break;
-				case Input.v:
-					{
-						if(ctx.state == ES.NormalMode)
 						{
 							AddEditor(ctx, GetFocusedPanel(), A2D.X);
-						}
+							taken = true;
-					} break;
+						} break;
-				case Input.c:
+					case Input.c:
-					{
-						if(ctx.state == ES.NormalMode)
 						{
 							AddEditor(ctx, GetFocusedPanel(), A2D.Y);
-						}
+							taken = true;
-					} break;
+						} break;
-				case Input.d:
+					case Input.d:
-					{
-						if(node.value.md & (MD.LeftShift | MD.RightShift))
 						{
-							static dbg = false;
+						} break;
-							dbg = !dbg;
+					case Input.Up:
-							SetDebug(dbg);
+					case Input.Down:
-						}
+					case Input.Left:
-					} break;
+					case Input.Right:
-				case Input.Up:
-				case Input.Down:
-				case Input.Left:
-				case Input.Right:
-					{
-						if(false)
 						{
-							UIPanel* panel = GetFocusedPanel();
+						} break;
-							UIPanel* focused = g_UI_NIL_PANEL;
+					default: break;
-							for(UIPanel* p = panel; !Nil(p); p = p.parent)
+				}
-							{
-								if(p.parent.axis == A2D.X)
-								{
-									if(key == Input.Left && !Nil(p.prev) && p.prev.ed != null)
-									{
-										focused = p.prev;
-										break;
-									}
-
-									if(key == Input.Right && !Nil(p.next) && p.next.ed != null)
-									{
-										focused = p.next;
-										break;
-									}
-								}
-								else
-								{
-									if(key == Input.Up && !Nil(p.prev) && p.prev.ed != null)
-									{
-										focused = p.prev;
-										break;
-									}
-
-									if(key == Input.Down && !Nil(p.next) && p.next.ed != null)
-									{
-										focused = p.next;
-										break;
-									}
-								}
-							}
-
-							SetFocusedPanel(focused);
-						}
-					} break;
-				default: break;
 			}
 		}
 
@@ -315,6 +277,60 @@ HandleInputs(EditorCtx* ctx, Inputs* inputs)
 			DLLRemove(&inputs.list, node, null);
 		}
 	}
+
+	InsertInputToBuf(ctx);
+}
+
+pragma(inline) void
+InsertChar(EditorCtx* ctx, Input input, bool modified)
+{
+	ctx.input_buf[ctx.icount++] = InputToChar(input, modified);
+}
+
+static string
+CharCases()
+{
+	import std.traits;
+
+	string result = "";
+	foreach(input; EnumMembers!Input)
+	{
+		u8 ch = InputToChar(input);
+		if(ch > 0)
+		{
+			result ~= format("case Input.%s: InsertChar(ctx, Input.%s, cast(bool)(ev.md & (MD.LeftShift | MD.RightShift))); taken = true; break;\n", input, input);
+		}
+	}
+	return result;
+}
+
+bool
+HandleInputMode(EditorCtx* ctx, InputEvent ev)
+{
+	bool taken = false;
+
+	switch(ev.key)
+	{
+		mixin(CharCases());
+		case Input.Escape:
+			{
+				ctx.state = ES.NormalMode;
+			} break;
+		case Input.Up:
+		case Input.Down:
+		case Input.Left:
+		case Input.Right:
+			{
+				UIPanel* p = GetFocusedPanel();
+				if(!Nil(p))
+				{
+					Move(&p.ed.buf, ev.key, ev.md);
+				}
+			} break;
+		default: break;
+	}
+
+	return taken;
 }
 
 /*

src/editor/parsing.d

@@ -149,6 +149,8 @@ const const(u8[])[]['z'-95] D_KEYWORDS = [
 void
 Tokenize(FlatBuffer* fb)
 {
+	if(fb.data.length == 0) return;
+
 	Tokenizer* tk = &fb.tk;
 
 	u64 semi_count;

src/editor/widgets.d

@@ -5,6 +5,7 @@ import ui : Nil;
 import ui;
 import editor;
 import std.format : sformat;
+import std.math.rounding : ceil;
 
 const UIPanel g_ui_nil_panel;
 UIPanel* g_UI_NIL_PANEL;
@@ -175,14 +176,20 @@ EditorView(UIPanel* panel)
 	UICtx*  ctx  = GetCtx();
 	UIItem* item = Panel(panel, UIF.Clickable);
 
-	TextPart* tp = WrappedTextLine(CastStr!(u8)("Test 1234"), panel.id, 16.0, 0);
+	u64 rows = cast(u64)ceil(item.size.y/16.0);
-	if(TextClicked(tp)) SetFocusedPanel(panel);
+	GetLines(&panel.ed.buf, &panel.ed.linebufs, 0, rows);
-	tp = WrappedTextLine(CastStr!(u8)("Test 1234"), panel.id, 16.0, 1);
+	for(u64 i = 0; i < panel.ed.linebufs.lines.length; i += 1)
-	if(TextClicked(tp)) SetFocusedPanel(panel);
+	{
-	tp = WrappedTextLine(CastStr!(u8)("Test 1234"), panel.id, 16.0, 2);
+		u8[] line = panel.ed.linebufs.lines[i];
-	if(TextClicked(tp)) SetFocusedPanel(panel);
+		if(line.length > 0)
-	tp = WrappedTextLine(CastStr!(u8)("Test 1234"), panel.id, 16.0, 3);
+		{
-	if(TextClicked(tp)) SetFocusedPanel(panel);
+			TextPart* tp = WrappedTextLine(line, panel.id, 16.0, i);
+			if(TextClicked(tp))
+			{
+				SetFocusedPanel(panel);
+			}
+		}
+	}
 
 	Signal(item);