LCD_DrawVLine.c
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上传日期:2017-08-10
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- /*********************************************************************
- * SEGGER MICROCONTROLLER SYSTEME GmbH *
- * Solutions for real time microcontroller applications *
- **********************************************************************
- * *
- * (c) 2002 SEGGER Microcontroller Systeme GmbH *
- * *
- * Internet: www.segger.com Support: support@segger.com *
- * *
- **********************************************************************
- **** emWin/GSC Grafical user interface for embedded applications ****
- emWin is protected by international copyright laws. Knowledge of the
- source code may not be used to write a similar product. This file may
- only be used in accordance with a license and should not be re-
- distributed in any way. We appreciate your understanding and fairness.
- ----------------------------------------------------------------------
- File : LCD_DrawVLine.c
- Purpose : Implementation of optional routines
- ---------------------------END-OF-HEADER------------------------------
- */
- #include "LCD_Private.h"
- #include "GUI_Private.h"
- /*
- *********************************************************
- * *
- * Macros for internal use *
- * *
- *********************************************************
- */
- #define RETURN_IF_Y_OUT()
- if (y < GUI_Context.ClipRect.y0) return;
- if (y > GUI_Context.ClipRect.y1) return;
- #define RETURN_IF_X_OUT()
- if (x < GUI_Context.ClipRect.x0) return;
- if (x > GUI_Context.ClipRect.x1) return;
- #define CLIP_X()
- if (x0 < GUI_Context.ClipRect.x0) { x0 = GUI_Context.ClipRect.x0; }
- if (x1 > GUI_Context.ClipRect.x1) { x1 = GUI_Context.ClipRect.x1; }
- #define CLIP_Y()
- if (y0 < GUI_Context.ClipRect.y0) { y0 = GUI_Context.ClipRect.y0; }
- if (y1 > GUI_Context.ClipRect.y1) { y1 = GUI_Context.ClipRect.y1; }
- void LCD_DrawVLine (int x, int y0, int y1) {
- /* Perform clipping and check if there is something to do */
- RETURN_IF_X_OUT();
- CLIP_Y();
- if (y1<y0)
- return;
- /* Call driver to draw */
- LCDDEV_L0_DrawVLine(x, y0, y1);
- }