bugfix centering text

src/commands/is_create.cpp

@@ -75,7 +75,7 @@ class TextLines
 		}
 
 		std::vector<TextItem> lines;
-		int getHeight() { return height + lineSpacing*lines.size(); }
+		int getHeight() { return height + (lines.empty() ? 0 : (lineSpacing*(lines.size() -1))); }
 		int getLineSpacing() { return lineSpacing; }
 
 	private:
@@ -193,7 +193,10 @@ void ImageWriter::WriteDryRun(pngwriter &writer, pngwriterfont& font, char fontS
 	int written = 0;
 
 	do {
-		lines.push_back(TextItem(writer, font, str.c_str(), written, written +maxLen, left +marginSize, top -marginSize -lines.getHeight() -fontSize, fontSize));
+		int py = top -lines.getHeight() -fontSize;
+		if (!lines.lines.empty())
+			py -= lines.getLineSpacing();
+		lines.push_back(TextItem(writer, font, str.c_str(), written, written +maxLen, left +marginSize, py, fontSize));
 		written += maxLen;
 	} while (written < str.length());
 }
@@ -223,7 +226,9 @@ bool ImageWriter::Build(User *u)
 	TextLines lines(fontSize * 0.55);
 	for (const Anope::string& str: text)
 		WriteDryRun(writer, font, fontSize, str, lines, fgColor);
-	int offsetY = lines.getHeight() > (bottom -top) ? 0 : (bottom -lines.getHeight() +lines.getLineSpacing()) /2;
+	int offsetY = -((top -bottom -lines.getHeight() -lines.getLineSpacing()) /2);
+	if (offsetY > 0)
+		offsetY = 0;
 	for (const TextItem& line: lines.lines)
 		WriteText(writer, font, fontSize, line, offsetY, fgColor);
 	writer.close();