62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
/*
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*********************************************************************************************************
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* uC/GUI
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* Universal graphic software for embedded applications
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*
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* (c) Copyright 2002, Micrium Inc., Weston, FL
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* (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
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*
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* µC/GUI is protected by international copyright laws. Knowledge of the
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* source code may not be used to write a similar product. This file may
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* only be used in accordance with a license and should not be redistributed
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* in any way. We appreciate your understanding and fairness.
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*
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----------------------------------------------------------------------
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File : LCDGetP.c
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Purpose : Get Pixel routines
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Note: These routines are in a module of their own
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because they are mostly not required to link
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---------------------------END-OF-HEADER------------------------------
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*/
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#include <stddef.h> /* needed for definition of NULL */
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#include "GUI_Private.h"
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#include "GUIDebug.h"
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/*********************************************************************
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*
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* Public code
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*
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**********************************************************************
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*/
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/*********************************************************************
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*
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* LCD_GetPixelIndex
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*
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* NOTE:
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* We can not use the standard clipping which we use for drawing
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* operations as it is perfectly legal to read pixels outside of
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* the clipping area. We therefor get the bounding rectangle of the
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* device and use it for clipping.
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*/
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unsigned LCD_GetPixelIndex(int x, int y) {
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LCD_RECT r;
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GUI_ASSERT_LOCK();
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LCDDEV_L0_GetRect(&r);
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if (x < r.x0) {
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return 0;
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}
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if (x > r.x1) {
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return 0;
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}
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if (y < r.y0) {
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return 0;
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}
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if (y > r.y1) {
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return 0;
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}
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return LCDDEV_L0_GetPixelIndex(x,y);
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}
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/*************************** End of file ****************************/
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