Fixed cursor positioning issues with new ImGui mentioned in: https://github.com/BalazsJako/ImGuiColorTextEdit/issues/71

TextEditor.cpp

diff --git a/TextEditor.cpp b/TextEditor.cpp
index 2093ce1..cddb6ca 100644
--- a/TextEditor.cpp
+++ b/TextEditor.cpp
@@ -266,7 +266,7 @@
 		{

 			cumulatedStringWidth[1] = cumulatedStringWidth[0];

 			cumulatedString += line[columnCoord].mChar;

-			cumulatedStringWidth[0] = ImGui::CalcTextSize(cumulatedString.c_str()).x;

+			cumulatedStringWidth[0] = ImGui::GetFont()->CalcTextSizeA(ImGui::GetFontSize(), FLT_MAX, -1.0f, cumulatedString.c_str(), nullptr, nullptr).x;

 			columnWidth = (cumulatedStringWidth[0] - cumulatedStringWidth[1]);

 			columnCoord++;

 		}

@@ -615,7 +615,7 @@
 void TextEditor::Render()

 {

 	/* Compute mCharAdvance regarding to scaled font size (Ctrl + mouse wheel)*/

-	const float fontSize = ImGui::CalcTextSize("#").x;

+	const float fontSize = ImGui::GetFont()->CalcTextSizeA(ImGui::GetFontSize(), FLT_MAX, -1.0f, "#", nullptr, nullptr).x;

 	mCharAdvance = ImVec2(fontSize, ImGui::GetTextLineHeightWithSpacing() * mLineSpacing);

 

 	/* Update palette with the current alpha from style */

@@ -650,12 +650,12 @@
 	// Deduce mTextStart by evaluating mLines size (global lineMax) plus two spaces as text width

 	char buf[16];

 	snprintf(buf, 16, " %d ", globalLineMax);

-	mTextStart = ImGui::CalcTextSize(buf).x + mLeftMargin;

+	mTextStart = ImGui::GetFont()->CalcTextSizeA(ImGui::GetFontSize(), FLT_MAX, -1.0f, buf, nullptr, nullptr).x + mLeftMargin;

 

 	if (!mLines.empty())

 	{

 		auto fontScale = ImGui::GetFontSize() / ImGui::GetFont()->FontSize;

-		float spaceSize = ImGui::CalcTextSize(" ").x + 1.0f * fontScale;

+		float spaceSize = ImGui::GetFont()->CalcTextSizeA(ImGui::GetFontSize(), FLT_MAX, -1.0f, " ", nullptr, nullptr).x;

 

 		while (lineNo <= lineMax)

 		{

@@ -720,7 +720,8 @@
 

 			// Draw line number (right aligned)

 			snprintf(buf, 16, "%d  ", lineNo + 1);

-			auto lineNoWidth = ImGui::CalcTextSize(buf).x;

+			

+			auto lineNoWidth = ImGui::GetFont()->CalcTextSizeA(ImGui::GetFontSize(), FLT_MAX, -1.0f, buf, nullptr, nullptr).x;

 			drawList->AddText(ImVec2(lineStartScreenPos.x + mTextStart - lineNoWidth, lineStartScreenPos.y), mPalette[(int)PaletteIndex::LineNumber], buf);

 

 			// Highlight the current line (where the cursor is)

@@ -766,8 +767,8 @@
 				{

 					const ImVec2 newOffset(textScreenPos.x + bufferOffset.x, textScreenPos.y + bufferOffset.y);

 					drawList->AddText(newOffset, prevColor, buffer.c_str());

-					auto textSize = ImGui::CalcTextSize(buffer.c_str());

-					bufferOffset.x += textSize.x + 1.0f * fontScale;

+					auto textSize = ImGui::GetFont()->CalcTextSizeA(ImGui::GetFontSize(), FLT_MAX, -1.0f, buffer.c_str(), nullptr, nullptr);

+					bufferOffset.x += textSize.x;

 					buffer.clear();

 				}

 				prevColor = color;

@@ -1972,7 +1973,7 @@
 	auto& line = mLines[aFrom.mLine];

 	float distance = 0.0f;

 	auto fontScale = ImGui::GetFontSize() / ImGui::GetFont()->FontSize;

-	float spaceSize = ImGui::CalcTextSize(" ").x + 1.0f * fontScale;

+	float spaceSize = ImGui::GetFont()->CalcTextSizeA(ImGui::GetFontSize(), FLT_MAX, -1.0f, " ", nullptr, nullptr).x;

 	for (size_t it = 0u; it < line.size() && it < (unsigned)aFrom.mColumn; ++it)

 	{

 		if (line[it].mChar == '\t')

@@ -1984,7 +1985,7 @@
 			char tempCString[2];

 			tempCString[0] = line[it].mChar;

 			tempCString[1] = '\0';

-			distance += ImGui::CalcTextSize(tempCString).x + 1.0f * fontScale;

+			distance += ImGui::GetFont()->CalcTextSizeA(ImGui::GetFontSize(), FLT_MAX, -1.0f, tempCString, nullptr, nullptr).x;

 		}

 	}