mirror of
https://gitee.com/Polarix/simplegui.git
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153 lines
6.8 KiB
C
153 lines
6.8 KiB
C
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/*************************************************************************/
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/** Copyright. **/
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/** FileName: SGUI_ItemsBase.c **/
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/** Author: XuYulin **/
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/** Version: 1.0.0.0 **/
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/** Description: Simple GUI items base interface, used to extend list **/
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/** components . **/
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/*************************************************************************/
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//=======================================================================//
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//= Include files. =//
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//=======================================================================//
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#include "SGUI_ItemsBase.h"
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//=======================================================================//
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//= User Macro definition. =//
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//=======================================================================//
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#define ITEM_EDGE_WIDTH (1)
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#define ITEM_HEIGHT(FONT) ((FONT)->iHeight+(ITEM_EDGE_WIDTH*2))
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//=======================================================================//
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//= Static function declaration. =//
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//=======================================================================//
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//=======================================================================//
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//= Function define. =//
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//=======================================================================//
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/*************************************************************************/
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/** Function Name: SGUI_ItemsBase_Initialize **/
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/** Purpose: Initialize a items-base object data. **/
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/** Params: **/
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/** @ pstObj[in]: Pointer of items-base object will be initialized. **/
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/** @ pstFontRes[in]: Font resource object pointer. **/
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/** Return: None. **/
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/*************************************************************************/
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void SGUI_ItemsBase_Initialize(SGUI_ITEMS_BASE* pstObj, const SGUI_FONT_RES* pstFontRes)
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{
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/*----------------------------------*/
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/* Process */
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/*----------------------------------*/
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if((NULL != pstObj) && (NULL != pstFontRes))
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{
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pstObj->pstFontRes = pstFontRes;
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pstObj->iSelection = 0;
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pstObj->iVisibleItems = (pstObj->stLayout.iHeight-1)/ITEM_HEIGHT(pstObj->pstFontRes)+1;
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pstObj->iPageStartIndex = 0;
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pstObj->iPageEndIndex = 0;
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pstObj->iItemPaintOffset = 0;
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}
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}
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void SGUI_ItemsBase_BintItemsData(SGUI_ITEMS_BASE* pstObj, SGUI_ITEMS_ITEM* pstItemsData, SGUI_INT iItemsCount)
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{
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/*----------------------------------*/
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/* Process */
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/*----------------------------------*/
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if((NULL != pstObj) && (NULL != pstItemsData) && (iItemsCount > 0))
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{
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pstObj->iSelection = 0;
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pstObj->iVisibleItems = (pstObj->stLayout.iHeight-1)/ITEM_HEIGHT(pstObj->pstFontRes)+1;
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pstObj->iPageStartIndex = 0;
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pstObj->iPageEndIndex = pstObj->iVisibleItems - 1;
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pstObj->pstItems = pstItemsData;
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pstObj->iCount = iItemsCount;
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}
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}
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void SGUI_ItemsBase_Repaint(SGUI_SCR_DEV* pstDeviceIF, SGUI_ITEMS_BASE* pstObj)
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{
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/*----------------------------------*/
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/* Variable Declaration */
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/*----------------------------------*/
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SGUI_RECT_AREA stItemPaintArea;
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SGUI_POINT stItemTextPos;
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SGUI_INT iItemIndex;
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SGUI_CSZSTR cszItemText;
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/*----------------------------------*/
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/* Initialize */
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/*----------------------------------*/
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stItemTextPos.iPosX = 1;
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/*----------------------------------*/
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/* Process */
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/*----------------------------------*/
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if((NULL != pstDeviceIF) && (NULL != pstObj))
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{
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// Clear background
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SGUI_Basic_DrawRectangle(pstDeviceIF, pstObj->stLayout.iPosX, pstObj->stLayout.iPosY, pstObj->stLayout.iWidth, pstObj->stLayout.iHeight, SGUI_COLOR_BKGCLR, SGUI_COLOR_BKGCLR);
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if((pstObj->iSelection > SGUI_INVALID_INDEX) && (pstObj->iSelection < pstObj->iCount))
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{
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stItemPaintArea.iPosX = pstObj->stLayout.iPosX;
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stItemPaintArea.iPosY = pstObj->stLayout.iPosY;
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stItemPaintArea.iWidth = pstObj->stLayout.iWidth;
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/* Judge selected item is in visible area. */
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if(pstObj->iSelection < pstObj->iPageStartIndex)
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{
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pstObj->iPageStartIndex = pstObj->iSelection;
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pstObj->iPageEndIndex = pstObj->iPageStartIndex + pstObj->iVisibleItems - 1;
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}
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else if(pstObj->iSelection > pstObj->iPageEndIndex)
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{
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pstObj->iPageEndIndex = pstObj->iSelection;
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pstObj->iPageStartIndex = pstObj->iPageEndIndex - pstObj->iVisibleItems + 1;
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}
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/* Judge selected item is beginning or ending. */
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if(pstObj->iSelection == pstObj->iPageStartIndex)
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{
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pstObj->iItemPaintOffset = 0;
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stItemPaintArea.iHeight = (pstObj->iVisibleItems>1)?(ITEM_HEIGHT(pstObj->pstFontRes)):(pstObj->stLayout.iHeight);
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}
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else if(pstObj->iSelection == pstObj->iPageEndIndex)
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{
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pstObj->iItemPaintOffset = (((pstObj->stLayout.iHeight)%ITEM_HEIGHT(pstObj->pstFontRes))-ITEM_HEIGHT(pstObj->pstFontRes))%ITEM_HEIGHT(pstObj->pstFontRes);
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stItemPaintArea.iHeight = ITEM_HEIGHT(pstObj->pstFontRes)+pstObj->iItemPaintOffset;
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}
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else
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{
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stItemPaintArea.iHeight = ITEM_HEIGHT(pstObj->pstFontRes);
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}
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/* Paint first visible item. */
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iItemIndex=pstObj->iPageStartIndex;
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stItemTextPos.iPosY = pstObj->iItemPaintOffset+1;
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cszItemText = (NULL==pstObj->pstItems[iItemIndex].szVariableText)?pstObj->pstItems[iItemIndex].cszLabelText:pstObj->pstItems[iItemIndex].szVariableText;
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SGUI_Text_DrawText(pstDeviceIF, cszItemText, pstObj->pstFontRes, &stItemPaintArea, &stItemTextPos, iItemIndex==pstObj->iSelection?SGUI_DRAW_REVERSE:SGUI_DRAW_NORMAL);
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iItemIndex++;
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stItemPaintArea.iHeight = ITEM_HEIGHT(pstObj->pstFontRes);
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if(pstObj->iVisibleItems > 1)
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{
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stItemPaintArea.iPosY += ITEM_HEIGHT(pstObj->pstFontRes)+(pstObj->iItemPaintOffset);
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stItemTextPos.iPosY = 1;
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while((iItemIndex != pstObj->iPageEndIndex) && (iItemIndex < pstObj->iCount))
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{
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cszItemText = (NULL==pstObj->pstItems[iItemIndex].szVariableText)?pstObj->pstItems[iItemIndex].cszLabelText:pstObj->pstItems[iItemIndex].szVariableText;
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SGUI_Text_DrawText(pstDeviceIF, cszItemText, pstObj->pstFontRes, &stItemPaintArea, &stItemTextPos, iItemIndex==pstObj->iSelection?SGUI_DRAW_REVERSE:SGUI_DRAW_NORMAL);
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stItemPaintArea.iPosY += ITEM_HEIGHT(pstObj->pstFontRes);
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iItemIndex++;
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}
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if(iItemIndex < pstObj->iCount)
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{
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/* Paint last visible item. */
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stItemPaintArea.iHeight = (0==pstObj->iItemPaintOffset)?(pstObj->stLayout.iHeight%ITEM_HEIGHT(pstObj->pstFontRes)):(ITEM_HEIGHT(pstObj->pstFontRes));
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/* Correct last visible item height when items area height is an integer multiple of item height. */
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stItemPaintArea.iHeight = (0==stItemPaintArea.iHeight)?ITEM_HEIGHT(pstObj->pstFontRes):stItemPaintArea.iHeight;
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cszItemText = (NULL==pstObj->pstItems[iItemIndex].szVariableText)?pstObj->pstItems[iItemIndex].cszLabelText:pstObj->pstItems[iItemIndex].szVariableText;
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SGUI_Text_DrawText(pstDeviceIF, cszItemText, pstObj->pstFontRes, &stItemPaintArea, &stItemTextPos, iItemIndex==pstObj->iSelection?SGUI_DRAW_REVERSE:SGUI_DRAW_NORMAL);
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}
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}
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}
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}
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}
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