272         PixelWriterContext context;  in Erase()  local
273         this->InitializeContext(context, buffer, ut::Color8::BLACK, bgColor, direction);  in Erase()
275         this->Erase(context, x, y, width, height);  in Erase()
305         PixelWriterContext context;  in DrawString()  local
306         this->InitializeContext(context, buffer, color, bgColor, direction);  in DrawString()
308         this->DrawString(context, x, y, str, turnOver, backErase);  in DrawString()
318         PixelWriterContext& context,  in InitializeContext()  argument
324         context.m_PixelSize = this->GetPixelSize();  in InitializeContext()
325         this->MakePixel(context.m_PixelColor, color);  in InitializeContext()
326         this->MakePixel(context.m_PixelBgColor, bgColor);  in InitializeContext()
332             context.m_BufferBase = buffer.m_Address;  in InitializeContext()
333             context.m_StrideX = context.m_PixelSize;  in InitializeContext()
334             context.m_StrideY = context.m_PixelSize * buffer.m_Width;  in InitializeContext()
335             context.m_LimitX = buffer.m_Width;  in InitializeContext()
336             context.m_LimitY = buffer.m_Height;  in InitializeContext()
340             context.m_BufferBase = buffer.m_Address + context.m_PixelSize * (buffer.m_Width - 1);  in InitializeContext()
341             context.m_StrideX = context.m_PixelSize * buffer.m_Width;  in InitializeContext()
342             context.m_StrideY = -context.m_PixelSize;  in InitializeContext()
343             context.m_LimitX = buffer.m_Height;  in InitializeContext()
344             context.m_LimitY = buffer.m_Width;  in InitializeContext()
356     u8* GetPixelAddress(const PixelWriterContext& context, int x, int y)  in GetPixelAddress()  argument
358         return context.m_BufferBase + context.m_StrideX * x + context.m_StrideY * y;  in GetPixelAddress()
370         const PixelWriterContext& context,  in Erase()  argument
391         int posEndX = ut::Max(0, ut::Min((int)context.m_LimitX, x + width));  in Erase()
395         int posEndY = ut::Max(0, ut::Min((int)context.m_LimitY, y + height));  in Erase()
409                 u8* pixel = this->GetPixelAddress(context, x + cntx, y + cnty);  in Erase()
410                 this->ErasePixel(pixel, context.m_PixelBgColor);  in Erase()
426         const PixelWriterContext& context,  in DrawString()  argument
442                 this->Erase(context, x - left,  y - top,  (len + 1) * FONT_WIDTH,  LINE_HEIGHT);  in DrawString()
445             int width = (context.m_LimitX - x) / FONT_WIDTH;  in DrawString()
447             str = this->DrawLine(context, x, y, str, width);  in DrawString()
489         const PixelWriterContext& context,  in DrawLine()  argument
526                     this->DrawChar(context, x, y, code);  in DrawLine()
554     DrawChar(const PixelWriterContext& context, int x, int y, int code)  in DrawChar()  argument
562         if (x < 0 || context.m_LimitX <= x + FONT_WIDTH)  in DrawChar()
567         if (y < 0 || context.m_LimitY <= y + FONT_HEIGHT)  in DrawChar()
582                 u8* pixel = this->GetPixelAddress(context, x + cntx, y + cnty);  in DrawChar()
586                     this->WritePixel(pixel, context.m_PixelColor);  in DrawChar()