Various fixes and improvements

src/EterLib/GrpTextInstance.cpp

@@ -793,10 +793,22 @@ void CGraphicTextInstance::Render(RECT * pClipRect)
 	}
 
 	// --- Selection background (Ctrl+A / shift-select) ---
-	if (m_isCursor && CIME::ms_bCaptureInput)
+	// MR-15: Expose text selection highlighting to Python
 	{
-		int selBegin = CIME::GetSelBegin();
-		int selEnd = CIME::GetSelEnd();
+		// Determine selection range: IME state for active input fields, local state otherwise
+		int selBegin, selEnd;
+
+		if (m_isCursor && CIME::ms_bCaptureInput)
+		{
+			selBegin = CIME::GetSelBegin();
+			selEnd = CIME::GetSelEnd();
+		}
+		else
+		{
+			selBegin = m_selStart;
+			selEnd = m_selEnd;
+		}
+		// MR-15: -- END OF -- Expose text selection highlighting to Python
 
 		if (selBegin > selEnd) std::swap(selBegin, selEnd);
 
@@ -818,18 +830,39 @@ void CGraphicTextInstance::Render(RECT * pClipRect)
 			__GetTextPos(visualSelBegin, &sx, &sy);
 			__GetTextPos(visualSelEnd,   &ex, &sy);
 
-			// Handle RTL - use the computed direction for this text instance
+			// MR-15: Expose text highlighting to Python
+			// Apply horizontal alignment (must match text rendering offset)
+			float alignOffset = 0.0f;
+
 			if (m_computedRTL)
 			{
-				sx += m_v3Position.x - m_textWidth;
-				ex += m_v3Position.x - m_textWidth;
+				switch (m_hAlign)
+				{
+					case HORIZONTAL_ALIGN_LEFT:
+						alignOffset = -(float)m_textWidth;
+						break;
+					case HORIZONTAL_ALIGN_CENTER:
+						alignOffset = -float(m_textWidth / 2);
+						break;
+				}
 			}
 			else
 			{
-				sx += m_v3Position.x;
-				ex += m_v3Position.x;
+				switch (m_hAlign)
+				{
+					case HORIZONTAL_ALIGN_RIGHT:
+						alignOffset = -(float)m_textWidth;
+						break;
+					case HORIZONTAL_ALIGN_CENTER:
+						alignOffset = -float(m_textWidth / 2);
+						break;
+				}
 			}
 
+			sx += m_v3Position.x + alignOffset;
+			ex += m_v3Position.x + alignOffset;
+			// MR-15: -- END OF -- Expose text highlighting to Python
+
 			// Apply vertical alignment
 			float top = m_v3Position.y;
 			float bot = m_v3Position.y + m_textHeight;
@@ -1076,6 +1109,18 @@ void CGraphicTextInstance::HideCursor()
 	m_isCursor = false;
 }
 
+void CGraphicTextInstance::SetSelection(int iStart, int iEnd)
+{
+	m_selStart = iStart;
+	m_selEnd = iEnd;
+}
+
+void CGraphicTextInstance::ClearSelection()
+{
+	m_selStart = 0;
+	m_selEnd = 0;
+}
+
 void CGraphicTextInstance::ShowOutLine()
 {
 	m_isOutline = true;
@@ -1317,6 +1362,9 @@ void CGraphicTextInstance::__Initialize()
 	m_isSecret = false;
 	m_isMultiLine = false;
 
+	m_selStart = 0;
+	m_selEnd = 0;
+
 	m_isOutline = false;
 	m_fFontFeather = c_fFontFeather;
 

src/EterLib/GrpTextInstance.h

@@ -47,6 +47,11 @@ class CGraphicTextInstance
 		void ShowCursor();
 		void HideCursor();
 
+		// MR-15: Expose text highlighting to Python
+		void SetSelection(int iStart, int iEnd);
+		void ClearSelection();
+		// MR-15: -- END OF -- Expose text highlighting to Python
+
 		void ShowOutLine();
 		void HideOutLine();
 
@@ -120,6 +125,9 @@ class CGraphicTextInstance
 		bool m_isSecret;
 		bool m_isMultiLine;
 
+		int m_selStart;
+		int m_selEnd;
+
 		bool m_isOutline;
 		float m_fFontFeather;
 

src/EterPythonLib/PythonWindow.cpp

@@ -1126,6 +1126,18 @@ namespace UI
 		return m_TextInstance.PixelPositionToCharacterPosition(lx);
 	}
 
+	// MR-15: Expose text highlighting to Python
+	void CTextLine::SetSelection(int iStart, int iEnd)
+	{
+		m_TextInstance.SetSelection(iStart, iEnd);
+	}
+
+	void CTextLine::ClearSelection()
+	{
+		m_TextInstance.ClearSelection();
+	}
+	// MR-15: -- END OF -- Expose text highlighting to Python
+
 	void CTextLine::SetBaseDirection(int iDir)
 	{
 		if (iDir == 2)

src/EterPythonLib/PythonWindow.h

@@ -292,6 +292,11 @@ namespace UI
 			void HideCursor();
 			int GetCursorPosition();
 
+			// MR-15: Expose text highlighting to Python
+			void SetSelection(int iStart, int iEnd);
+			void ClearSelection();
+			// MR-15: -- END OF -- Expose text highlighting to Python
+
 			void SetText(const char * c_szText);
 			const char * GetText();
 			

src/EterPythonLib/PythonWindowManagerModule.cpp

@@ -1899,6 +1899,40 @@ PyObject * wndTextGetCursorPosition(PyObject * poSelf, PyObject * poArgs)
 	return Py_BuildValue("i", ((UI::CTextLine*)pWindow)->GetCursorPosition());
 }
 
+PyObject * wndTextSetSelection(PyObject * poSelf, PyObject * poArgs)
+{
+	UI::CWindow * pWindow;
+
+	if (!PyTuple_GetWindow(poArgs, 0, &pWindow))
+		return Py_BuildException();
+
+	int iStart;
+
+	if (!PyTuple_GetInteger(poArgs, 1, &iStart))
+		return Py_BuildException();
+
+	int iEnd;
+
+	if (!PyTuple_GetInteger(poArgs, 2, &iEnd))
+		return Py_BuildException();
+
+	((UI::CTextLine*)pWindow)->SetSelection(iStart, iEnd);
+
+	return Py_BuildNone();
+}
+
+PyObject * wndTextClearSelection(PyObject * poSelf, PyObject * poArgs)
+{
+	UI::CWindow * pWindow;
+
+	if (!PyTuple_GetWindow(poArgs, 0, &pWindow))
+		return Py_BuildException();
+
+	((UI::CTextLine*)pWindow)->ClearSelection();
+
+	return Py_BuildNone();
+}
+
 PyObject * wndNumberSetNumber(PyObject * poSelf, PyObject * poArgs)
 {
 	UI::CWindow * pWindow;
@@ -2567,6 +2601,10 @@ void initwndMgr()
 		{ "GetTextSize",				wndTextGetTextSize,					METH_VARARGS },
 		{ "ShowCursor",					wndTextShowCursor,					METH_VARARGS },
 		{ "HideCursor",					wndTextHideCursor,					METH_VARARGS },
+		// MR-15: Expose text highlighting to Python
+		{ "SetSelection",				wndTextSetSelection,				METH_VARARGS },
+		{ "ClearSelection",				wndTextClearSelection,				METH_VARARGS },
+		// MR-15: -- END OF -- Expose text highlighting to Python
 		{ "GetCursorPosition",			wndTextGetCursorPosition,			METH_VARARGS },
 		// NumberLine
 		{ "SetNumber",						wndNumberSetNumber,							METH_VARARGS },