MEMDEV_Banding.c

00001 /*********************************************************************
00002 *                SEGGER Microcontroller GmbH                         *
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00010 **********************************************************************
00011 
00012 ** emWin V5.48 - Graphical user interface for embedded applications **
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00015 source code may not be used to write a similar product.  This file may
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00017 
00018 The software  has been licensed to  Cypress Semiconductor Corporation,
00019 whose registered  office is situated  at 198 Champion Ct. San Jose, CA 
00020 95134 USA  solely for the  purposes of creating  libraries for Cypress
00021 PSoC3 and  PSoC5 processor-based devices,  sublicensed and distributed
00022 under  the  terms  and  conditions  of  the  Cypress  End User License
00023 Agreement.
00024 Full source code is available at: www.segger.com
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00027 ----------------------------------------------------------------------
00028 Licensing information
00029 Licensor:                 SEGGER Microcontroller Systems LLC
00030 Licensed to:              Cypress Semiconductor Corp, 198 Champion Ct., San Jose, CA 95134, USA
00031 Licensed SEGGER software: emWin
00032 License number:           GUI-00319
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00035 ----------------------------------------------------------------------
00036 Support and Update Agreement (SUA)
00037 SUA period:               2009-06-12 - 2022-07-27
00038 Contact to extend SUA:    sales@segger.com
00039 ----------------------------------------------------------------------
00040 File        : MEMDEV_Banding.c
00041 Purpose     : Example demonstrating the use of banding memory devices
00042 Requirements: WindowManager - ( )
00043               MemoryDevices - (x)
00044               AntiAliasing  - ( )
00045               VNC-Server    - ( )
00046               PNG-Library   - ( )
00047               TrueTypeFonts - ( )
00048 ----------------------------------------------------------------------
00049 */
00050 
00051 #include "GUI.h"
00052 
00053 /*********************************************************************
00054 *
00055 *       Defines
00056 *
00057 **********************************************************************
00058 */
00059 #define USE_BANDING_MEMDEV (1) /* Set to 0 for drawing without banding memory device */
00060 #define SIZE_OF_ARRAY(Array) (sizeof(Array) / sizeof(Array[0]))
00061 
00062 //
00063 // Recommended memory to run the sample with adequate performance
00064 //
00065 #define RECOMMENDED_MEMORY (1024L * 30)
00066 
00067 /*******************************************************************
00068 *
00069 *       static variables
00070 *
00071 ********************************************************************
00072 */
00073 
00074 static const GUI_POINT aPoints[] = {
00075   {-50,  0},
00076   {-10, 10},
00077   {  0, 50},
00078   { 10, 10},
00079   { 50,  0},
00080   { 10,-10},
00081   {  0,-50},
00082   {-10,-10}
00083 };
00084 
00085 typedef struct {
00086   int XPos_Poly;
00087   int YPos_Poly;
00088   int XPos_Text;
00089   int YPos_Text;
00090   GUI_POINT aPointsDest[8];
00091 } tDrawItContext;
00092 
00093 /*******************************************************************
00094 *
00095 *       static code
00096 *
00097 ********************************************************************
00098 */
00099 
00100 /*******************************************************************
00101 *
00102 *       _DrawIt
00103 */
00104 static void _DrawIt(void * pData) {
00105   tDrawItContext * pDrawItContext = (tDrawItContext *)pData;
00106   GUI_Clear();
00107   GUI_SetFont(&GUI_Font8x8);
00108   GUI_SetTextMode(GUI_TM_TRANS);
00109   //
00110   // draw background
00111   //
00112   GUI_SetColor(GUI_GREEN);
00113   GUI_FillRect(pDrawItContext->XPos_Text, 
00114                pDrawItContext->YPos_Text - 25,
00115                pDrawItContext->XPos_Text + 100,
00116                pDrawItContext->YPos_Text - 5);
00117   //
00118   // draw polygon
00119   //
00120   GUI_SetColor(GUI_BLUE);
00121   GUI_FillPolygon(pDrawItContext->aPointsDest, SIZE_OF_ARRAY(aPoints), 160, 120);
00122   //
00123   // draw foreground
00124   //
00125   GUI_SetColor(GUI_RED);
00126   GUI_FillRect(220 - pDrawItContext->XPos_Text, 
00127                pDrawItContext->YPos_Text + 5,
00128                220 - pDrawItContext->XPos_Text + 100,
00129                pDrawItContext->YPos_Text + 25);
00130 }
00131 
00132 /*******************************************************************
00133 *
00134 *       _DemoBandingMemdev
00135 */
00136 static void _DemoBandingMemdev(void) {
00137   tDrawItContext DrawItContext;
00138   int i, swap=0;
00139   GUI_SetBkColor(GUI_BLACK);
00140   GUI_Clear();
00141   GUI_SetColor(GUI_WHITE);
00142   GUI_SetFont(&GUI_Font24_ASCII);
00143   GUI_DispStringHCenterAt("MEMDEV_Banding - Sample", 160, 5);
00144   GUI_SetFont(&GUI_Font8x9);
00145   GUI_DispStringHCenterAt("Banding memory device\nwithout flickering", 160, 40);
00146   DrawItContext.XPos_Poly = 160;
00147   DrawItContext.YPos_Poly = 120;
00148   DrawItContext.YPos_Text = 116;
00149   while (1) {
00150     swap = ~swap;
00151     for (i = 0; i < 220; i++) {
00152       float angle = i * 3.1415926 / 55;
00153       DrawItContext.XPos_Text = (swap) ? i : 220 - i;
00154       /* Rotate the polygon */
00155       GUI_RotatePolygon(DrawItContext.aPointsDest, aPoints, 
00156                         SIZE_OF_ARRAY(aPoints), angle);
00157       #if USE_BANDING_MEMDEV
00158       {
00159         GUI_RECT Rect = {0, 70, 320,170};
00160         /* Use banding memory device for drawing */
00161         GUI_MEMDEV_Draw(&Rect, &_DrawIt, &DrawItContext, 0, 0);
00162       }
00163       #else
00164         /* Simple drawing without using memory devices */
00165         _DrawIt((void *)&DrawItContext);
00166       #endif
00167       #ifdef WIN32
00168         GUI_Delay(20); /* Use a short delay only in the simulation */
00169       #endif
00170     }
00171   }
00172 }
00173 
00174 /*********************************************************************
00175 *
00176 *       Public code
00177 *
00178 **********************************************************************
00179 */
00180 /*********************************************************************
00181 *
00182 *       MainTask
00183 */
00184 void MainTask(void) {
00185   GUI_Init();
00186   //
00187   // Check if recommended memory for the sample is available
00188   //
00189   if (GUI_ALLOC_GetNumFreeBytes() < RECOMMENDED_MEMORY) {
00190     GUI_ErrorOut("Not enough memory available."); 
00191     return;
00192   }
00193   _DemoBandingMemdev();
00194 }
00195 
00196 /*************************** End of file ****************************/
00197