139 lines
4.5 KiB
C
139 lines
4.5 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 : LCDRLE4.c
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Purpose : Drawing routines for run length encoded bitmaps
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with 4bpp
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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 "LCD.h"
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#include "GUI_Private.h"
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/*********************************************************************
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*
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* Static 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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* _DrawBitmap_RLE4
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*/
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static void _DrawBitmap_RLE4(int x0,int y0,int xsize, int ysize, const U8 GUI_UNI_PTR * pPixel, const LCD_LOGPALETTE GUI_UNI_PTR* pLogPal, int xMag, int yMag) {
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const LCD_PIXELINDEX* pTrans =NULL;
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char NoTrans = !(GUI_Context.DrawMode & LCD_DRAWMODE_TRANS);
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LCD_PIXELINDEX aColorIndex[2];
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LCD_PIXELINDEX PixelIndex;
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int xi,y;
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int xL, yL;
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char IsMagnified = ((yMag | xMag) != 1);
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aColorIndex[0] = LCD_ACOLORINDEX[0];
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aColorIndex[1] = LCD_ACOLORINDEX[1];
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/* Handle color translation */
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if ((pLogPal) && (pLogPal->pPalEntries)) {
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if ((pTrans = LCD_GetpPalConvTable(pLogPal)) == NULL) {
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return;
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}
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}
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/* Check if we can limit the number of lines due to clipping) */
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if (yMag == 1) {
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if (ysize > GUI_Context.ClipRect.y1 - y0 + 1)
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ysize = GUI_Context.ClipRect.y1 - y0 + 1;
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}
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/* Repeat until we have reached bottom */
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for (xi=0, y = 0; y < ysize; ) {
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U8 Cmd,Data;
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Cmd= *pPixel++;
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Data = *pPixel++;
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if (Cmd) {
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LCD_SetColorIndex(pTrans ? *(pTrans+Data) : Data);
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while (Cmd) {
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int xi1 = xi+Cmd;
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if (xi1>=xsize)
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xi1 = xsize;
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Cmd -= (xi1-xi);
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if (Data || NoTrans) { /* Skip transparent pixels */
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if (IsMagnified) {
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xL = xMag * xi + x0;
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yL = yMag * y + y0;
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LCD_FillRect(xL, yL, xL + xMag * (xi1 - xi) -1 , yL + yMag - 1);
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} else {
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LCD_DrawHLine(x0+xi, y + y0, xi1+x0-1);
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}
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}
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xi =xi1;
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if (xi1==xsize) {
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y++;
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xi=0;
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}
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}
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} else {
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while (Data--) {
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U8 Index = *pPixel++;
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if ((Index>>4) || NoTrans) { /* Skip transparent pixels */
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PixelIndex = pTrans ? *(pTrans+(Index>>4)) : (Index>>4);
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if (IsMagnified) {
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LCD_SetColorIndex(PixelIndex);
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xL = xMag * xi + x0;
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yL = yMag * y + y0;
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LCD_FillRect(xL, yL, xL + xMag -1 , yL + yMag - 1);
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} else {
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LCD_SetPixelIndex(x0+xi, y + y0, PixelIndex);
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}
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}
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if (++xi >= xsize) {
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xi=0; y++;
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}
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if (Data-- == 0)
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break;
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if ((Index&15) || NoTrans) { /* Skip transparent pixels */
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PixelIndex = pTrans ? *(pTrans+(Index&15)) : (Index&15);
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if (IsMagnified) {
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LCD_SetColorIndex(PixelIndex);
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xL = xMag * xi + x0;
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yL = yMag * y + y0;
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LCD_FillRect(xL, yL, xL + xMag -1 , yL + yMag - 1);
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} else {
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LCD_SetPixelIndex(x0+xi, y + y0, PixelIndex);
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}
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}
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if (++xi >= xsize) {
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xi=0; y++;
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}
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}
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}
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}
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LCD_ACOLORINDEX[0] = aColorIndex[0];
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LCD_ACOLORINDEX[1] = aColorIndex[1];
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}
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/*********************************************************************
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*
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* Public data
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*
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**********************************************************************
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*/
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/*********************************************************************
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*
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* GUI_BitmapMethodsRLE4
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*/
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const GUI_BITMAP_METHODS GUI_BitmapMethodsRLE4 = {
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_DrawBitmap_RLE4,
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NULL
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};
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/*************************** End of file ****************************/
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