#include "mywin_inc.h"

// 定义页面类型
#define WIN_TYPE_TYPE "WIN_PageStruct"

WIN_PageStruct *WIN_CreatPage(WIN_WindowStruct *base,
                              void (*msgLoop)(struct _WIN_WindowStruct *win,
                                              WIN_MsgStruct *msg),
                              int x, int y, int x_size, int y_size) {
  // 重设消息循环
  if (msgLoop == 0) {
    msgLoop = (void (*)(struct _WIN_WindowStruct *win,
                        WIN_MsgStruct *msg))PAGE_DefaultMsgLoop;
  }

  WIN_PageStruct *ret = mymalloc(sizeof(WIN_PageStruct));
  // 调用父类的构造函数
  if (ret) {
    mymemset(ret, 0, sizeof(WIN_PageStruct));
    if (0 == WIN_CreatWindowExt((WIN_WindowStruct *)ret, base, msgLoop, x, y,
                                x_size, y_size)) {
      // 创建失败
      myfree(ret);
      ret = 0;
    } else {
      // 重新设置析构函数
      ((WIN_WindowStruct *)ret)->winType = WIN_TYPE_TYPE;
      ((WIN_WindowStruct *)ret)->deleteWindow =
          (void (*)(struct _WIN_WindowStruct *win))WIN_DeletePage;

      // 构造一个
      ret->title = "列表";
      ret->itemHeight = WIN_GetFontHight();
      ret->titleHeight = WIN_GetFontHight();
      ret->itemIndent = 80;
    }
  }

  return ret;
}

// 销毁页面
void WIN_DeletePage(WIN_PageStruct *page) {
  // 回收堆内存
  if (page->item) {
    myfree(page->item);
  }

  // 调用父类的销毁函数
  WIN_DeleteWindow((WIN_WindowStruct *)page);
}

// 设置页面的背景图片
void PAGE_SetBackPic(WIN_PageStruct *page, WIN_PicStruct *pic) {
  if (pic) {
    page->pic.data = pic->data;
    page->pic.xsize = pic->xsize;
    page->pic.ysize = pic->ysize;
  } else {
    page->pic.data = 0;
    page->pic.xsize = 0;
    page->pic.ysize = 0;
  }
}

// 设置列表框显示的条目
void PAGE_SetItem(WIN_PageStruct *page, const PAGE_ItemStruct *item,
                  int itemNum) {
  if (page->item) {
    myfree(page->item);
  }
  page->itemNum = itemNum;
  page->item = mymalloc((sizeof(PAGE_ItemStruct *) * page->itemNum));
  for (int i = 0; i < page->itemNum; i++) {
    page->item[i] = (PAGE_ItemStruct *)&item[i];
  }
}

// 设置标题高度
void PAGE_SetTitleHeight(WIN_PageStruct *page, int height) {
  page->titleHeight = height;
}

// 设置条目缩进
void PAGE_SetItemIndent(WIN_PageStruct *page, int indent) {
  page->itemIndent = indent;
}

// 设置条目高度
void PAGE_SetItemHeight(WIN_PageStruct *page, int height) {
  page->itemHeight = height;
}

// 索引增加
void PAGE_IndexAdd(WIN_PageStruct *page) {
  page->index++;
  if (page->index >= page->itemNum) {
    page->index = 0;
  }
}

// 索引减少
void PAGE_IndexSub(WIN_PageStruct *page) {
  if (page->index > 0) {
    page->index--;
  } else {
    page->index = page->itemNum - 1;
  }
}

// 默认绘制函数
void PAGE_DefaultPaint(WIN_PageStruct *page) {

  // 使用双缓冲，防止闪烁
  //	LCD_LayerBufferOn();

  int x = 0;
  int y = 0;
  int x_size = ((WIN_WindowStruct *)page)->x_size;
  int y_size = page->titleHeight;
  int one_page_num = 0; // 每页显示的条目数
  int item_size = 0;    // 条目的实际高度
  int item_index_now;   // 当前页面的索引
  int page_now;         // 当前页
  WIN_SetLcdBkColor(0xf8f8f8);

  // 如果有图片就显示图片
  if (page->pic.data) {
    WIN_FillRect(0, 0, ((WIN_WindowStruct *)page)->x_size,
                 ((WIN_WindowStruct *)page)->y_size, page->pic.data, 0, 0,
                 page->pic.xsize, page->pic.ysize);
  } else {
    WIN_Clear();
  }

  // 显示标题
  WIN_SetFontMode(WIN_DRAWMODE_ALONE);
  WIN_SetLcdColor(0);
  WIN_DrawTxtHCenterAt(page->title, x_size / 2,
                       y_size / 2 - WIN_GetFontHight() / 2);

  // 显示选中栏
  y += y_size;
  y_size = ((WIN_WindowStruct *)page)->y_size - y_size;
  one_page_num = y_size / page->itemHeight;
  item_size = y_size / one_page_num;
  item_index_now = page->index % one_page_num;
  WIN_SetLcdColor(0x8080a0);
  WIN_FillRectByColor(x, y + item_index_now * item_size, x_size, item_size);

  // 显示条目
  page_now = page->index / one_page_num;
  for (int i = 0; i < one_page_num; i++) {
    item_index_now = page_now * one_page_num + i;
    int img_xsize = 0;
    int img_ysize = 0;
    if (item_index_now < page->itemNum) {
      // 显示图标
      if (page->item[item_index_now]->image) {
        WIN_GetImageSize(page->item[item_index_now]->image, &img_xsize,
                         &img_ysize);
        if (img_xsize > page->itemIndent)
          img_xsize = page->itemIndent;
        if (img_ysize > item_size)
          img_ysize = item_size;
        WIN_DrawImag(x + page->itemIndent / 2 - img_xsize / 2,
                     item_size / 2 - img_ysize / 2 + y + i * item_size,
                     img_xsize, img_ysize, page->item[item_index_now]->image);
      }
      // 显示横线和字符
      WIN_SetLcdColor(0x808080);
      WIN_DrawHLine(x + page->itemIndent, y + i * item_size + item_size - 2,
                    x_size - 1);
      WIN_SetLcdColor(0);
      WIN_DrawTxtAt(page->item[item_index_now]->str, x + page->itemIndent,
                    y + i * item_size + item_size / 2 - WIN_GetFontHight() / 2);
    }
  }

  //	LCD_LayerBuffShow();
}

// 默认消息处理函数
void PAGE_DefaultMsgLoop(WIN_PageStruct *page, WIN_MsgStruct *msg) {
  WIN_MoveStruct *m = 0;
  WIN_TouchStruct *t = 0;
  WIN_KeyStruct *k = 0;
  switch (msg->msg) {
  case WIN_MSG_PAINT:
    PAGE_DefaultPaint(page);
    break;
  case WIN_MSG_KEY:
    k = msg->data.p;
    if (k->shortPress & KEY_VALUE_UP) // 短按
    {
      PAGE_IndexSub(page);
    } else if (k->shortPress & KEY_VALUE_DOWN) {
      PAGE_IndexAdd(page);
    } else if (k->shortPress & KEY_VALUE_ENTER) {
      static char tips[20] = {0};
      sprintf(tips, "内存使用：mem:%d,exmem:%d", mem_perused(),
              exmem_perused());
      MSGBOX_Tips((WIN_WindowStruct *)page, "警告", tips, "确定");
    }
    if (k->shortPress) {
      WIN_SetInvalidRect((WIN_WindowStruct *)page, 0, page->titleHeight,
                         ((WIN_WindowStruct *)page)->x_size,
                         ((WIN_WindowStruct *)page)->y_size -
                             page->titleHeight);
    }
    break;
  case WIN_MSG_TOUCH:
    t = msg->data.p;
    if (page->touchIn) {
      page->touchIn = 0;
      // 模拟上键按下
      if (t->y[0] < ((WIN_WindowStruct *)page)->y_size / 2) {
        PAGE_IndexSub(page);
      } else {
        PAGE_IndexAdd(page);
      }
      WIN_SetInvalidRect((WIN_WindowStruct *)page, 0, page->titleHeight,
                         ((WIN_WindowStruct *)page)->x_size,
                         ((WIN_WindowStruct *)page)->y_size -
                             page->titleHeight);
    }
    break;
  case WIN_MSG_MOVE:
    m = msg->data.p;
    switch (m->moveType) {
    case MOVE_DATA_TOUCHOUT:
      page->touchIn = 1; // 标识触屏已经按下
      break;
    default:
      WIN_DefaultMsgLoop((WIN_WindowStruct *)page, msg);
      break;
    }
  default:
    WIN_DefaultMsgLoop((WIN_WindowStruct *)page, msg);
    break;
  }
}