|
|
前段时间有客户问起emWin有没有表盘控件？一时语塞，才发现emWin还真没有表盘控件，SEGGER怎么了？
这几天突发奇想，为什么不用Progbar进度条控件改成表盘控件来用，因为它们性质和功能完全一样，只要把背景改一改，画个指针就完事，APP函数完全通用！自己还给它起了个好听的名字：ProgbarMeter控件。步骤如下：
(1)准备个表盘背景图片
(2)把绘制Progbar控件的函数改成自定义绘制函数，这样我们想把Progbar控件画成什么样都行，emWin已经不参与这个控件的绘制工作了- hItem = WM_GetDialogItem(pMsg->hWin, ID_PROGBAR_0);//获取句柄
- PROGBAR_SetSkin(hItem, SKIN_progbarmeter3C);//将这个PROGBAR控件改成自定义绘制函数
- //ProgbarMeter控件的自定义绘制函数
- static int SKIN_progbarmeter(const WIDGET_ITEM_DRAW_INFO * pDrawItemInfo, unsigned char C)
- {
- WM_HWIN hWin;
- int x0, y0;
- WINDOW_BMP *winBMP;
- switch (pDrawItemInfo->Cmd)
- {
- case WIDGET_ITEM_CREATE:
- //case WIDGET_ITEM_DRAW_BACKGROUND:
- case WIDGET_ITEM_DRAW_FRAME:
- //case WIDGET_ITEM_DRAW_TEXT:
- break;
- default: return PROGBAR_DrawSkinFlex(pDrawItemInfo);//emWin默认控件绘制函数
- case WIDGET_ITEM_DRAW_BACKGROUND:
- hWin = (WM_GET_PARENT[C-2])(pDrawItemInfo->hWin);//位于第几层修改这里(WM_GetParent数=层数-2)
- WM_GetUserData(hWin, &winBMP, sizeof(winBMP));//从用户数据区读出"页面图片结构体"指针
- //获取此控件相对于主页面(比如:背景WM_HBKWIN->WINDOW)位置偏移坐标
- x0 = WM_GetWindowOrgX(hWin) - WM_GetWindowOrgX(pDrawItemInfo->hWin);
- y0 = WM_GetWindowOrgY(hWin) -WM_GetWindowOrgY(pDrawItemInfo->hWin);
- PROGBARMETER_SetUserClip(pDrawItemInfo);//设置1个用户剪切区
- if(((PROGBAR_SKINFLEX_INFO *)pDrawItemInfo->p)->Index == PROGBAR_SKINFLEX_L)
- GUI_DrawBitmap(winBMP->normal, x0, y0);//从页面坐标显示图片,emWin会自己剪切出这个控件范围的图片
- else if(((PROGBAR_SKINFLEX_INFO *)pDrawItemInfo->p)->Index == PROGBAR_SKINFLEX_R)
- GUI_DrawBitmap(winBMP->normal, x0, y0);
- else BUTTON_DrawSkinFlex(pDrawItemInfo);
- WM_SetUserClipRect(0);
- break;
- case WIDGET_ITEM_DRAW_TEXT:
- PROGBARMETER_DispNeedle(pDrawItemInfo, 150, -150, 0, 100);
- return PROGBAR_DrawSkinFlex(pDrawItemInfo);
- }
- return 0;
- }
- static const GUI_POINT _aNeedle[] = {{-3, 0}, {-2, -70}, {0, -80}, {2, -70}, {3, 0}};
- //ProgbarMeter控件指针绘制函数
- static void PROGBARMETER_DispNeedle(const WIDGET_ITEM_DRAW_INFO * pDrawItemInfo, short angleBEG, short angleEND, short valMIN, short valMAX)
- {
- GUI_POINT aPoints[GUI_COUNTOF(_aNeedle)];
- GUI_RECT r;
- float Angle;
- short Value; char i, Text[8], *p = (char *)((PROGBAR_SKINFLEX_INFO *)pDrawItemInfo->p)->pText;
- for(i=0; i<7; i++){Text[i] = *p++; Text[i+1] = 0; if(*p == '%') break;}
- Value = atoi(Text); if(Value<valMIN) Value = valMIN; if(Value>valMAX) Value = valMAX;
- Angle = angleBEG - (abs(angleEND-angleBEG)/(valMAX-valMIN))*Value;
- //PROGBAR_GetMinMax(pDrawItemInfo->hWin, &valMIN, &valMAX);//emwin v5.30
- //Angle = angleBEG - (abs(angleEND-angleBEG)/(valMAX-valMIN))*PROGBAR_GetValue(pDrawItemInfo->hWin);//emwin v5.30
- Angle *= 3.1415926f / 180;
- GUI_SetColor(0x35bf5f);
- GUI_RotatePolygon(aPoints, _aNeedle, GUI_COUNTOF(_aNeedle), Angle);
- WM_GetWindowRectEx(pDrawItemInfo->hWin, &r);
- GUI_FillPolygon(aPoints, GUI_COUNTOF(aPoints), (r.x1-r.x0)/2, (r.y1-r.y0)/2);
- }
emWin表盘控件效果演示.rar
(252 KB, 下载次数: 168)
emWin表盘控件源码.rar
(2.99 MB, 下载次数: 363)
|
评分
-
查看全部评分
|
发表于 2016-6-14 15:59:25
楼主
发表于 2016-6-15 00:29:04
发表于 2016-6-15 10:51:34
