C++ Text::c_str方法代码示例

/// Returns the size required by a call to RenderText if it were to be done now.
Vector2f TextFont::CalculateRenderSizeUnits(Text & text)
{
	if (text.Length() < 1)
	{
		return Vector2f(scale[0], scale[1]);
	}
	// Set starting variables.
	NewText(text);

	// Go up to and include the NULL-sign!
	for (int i = 0; i < text.ArraySize(); ++i)
	{
		currentCharIndex = i;
		currentChar = text.c_str()[i];
		if (currentChar == '\0')
		{
			EndText();
			break;
		}
		nextChar = text.c_str()[i + 1];
		if (EvaluateSpecialChar())
			continue;
		StartChar();
		// RenderChar();
		EndChar();
		lastChar = currentChar;
	}
	return Vector2f (maxRowSizeX, AbsoluteValue(pivotPoint.y));
}

 static void set_param(row r, const Text& val, int index)
 {
 #if defined(_UNICODE) || defined(UNICODE)
     int nResult = sqlite3_bind_text16(r, index + 1, val.c_str(), -1, SQLITE_TRANSIENT);
 #else
     int nResult = sqlite3_bind_text(r, index + 1, val.c_str(), -1, SQLITE_TRANSIENT);
 #endif
     assert(SQLITE_OK == nResult);
 }

/// Renders text ^^
void TextFont::RenderText(Text & text, GraphicsState & graphicsState)
{
	// Set starting variables.
	NewText(text);

	/// One color for all text?
	this->SetColor(text.color);
	
	/// Save old shader!
	Shader * oldShader = ActiveShader();
	// Load shader, set default uniform values, etc.
	if (!PrepareForRender())
		return;

	/// Sort the carets in order to render selected text properly.
	int min, max;
	if (text.caretPosition < text.previousCaretPosition)
	{
		min = text.caretPosition;
		max = text.previousCaretPosition;
	}
	else 
	{
		max = text.caretPosition;
		min = text.previousCaretPosition;
	}

	bool shouldRenderCaret = Timer::GetCurrentTimeMs() % 1000 > 500;
	if (text.Length() == 0 && shouldRenderCaret)
		RenderChar('|');
	for (i = 0; i < text.Length(); ++i)
	{
		if (text.caretPosition == i && shouldRenderCaret)
		{
			RenderChar('|');
		}
		currentCharIndex = i;
		currentChar = text.c_str()[i];
		if (currentChar == 0)
			break;
		nextChar = text.c_str()[i + 1];

		if (EvaluateSpecialChar())
			continue;

		StartChar();				// Move in.
		RenderChar(currentChar);	// Render
		/// If we are between the 2 active carets, render the region the char covers over with a white quad ?
		if (text.previousCaretPosition != -1 && i >= min && i < max)
		{
			RenderSelection(currentChar);			
		}
		EndChar();					// Move out.
		lastChar = currentChar;
	}
	// Caret at the end?
	if (text.caretPosition >= text.Length() && shouldRenderCaret)
	{
		RenderChar('|');
	}
	
	OnEndRender(graphicsState);
	/// Revert to old shader!
	ShadeMan.SetActiveShader(oldShader);
}