player/Project/Src/MyWin/Window/mywin_popup.c

#include "mywin_inc.h"

// 弹出式菜单

// 定义弹出式菜单类型
#define WIN_POPUP_TYPE "WIN_PopupStruct"

WIN_PopupStruct *WIN_CreatPopup(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))POPUP_DefaultMsgLoop;
  }

  WIN_PopupStruct *ret = mymalloc(sizeof(WIN_PopupStruct));
  // 调用父类的构造函数
  if (ret) {
    mymemset(ret, 0, sizeof(WIN_PopupStruct));
    if (0 == WIN_CreatWindowExt((WIN_WindowStruct *)ret, base, msgLoop, x, y,
                                x_size, y_size)) {
      // 创建失败
      myfree(ret);
      ret = 0;
    } else {
      // 构造一个
      ((WIN_WindowStruct *)ret)->winType = WIN_POPUP_TYPE;
      ((WIN_WindowStruct *)ret)->bkcolor = 0x342f2a;
      ((WIN_WindowStruct *)ret)->color = 0xc2ae9b;
      ((WIN_WindowStruct *)ret)->intercept = 1; // 作为子窗口，接管按键消息
      ret->y_step = 30;
    }
  }

  return ret;
}

// 添加条目
void POPUP_AddItem(WIN_PopupStruct *popup, char *item) {
  if (popup->itemNum < POPUP_ITEM_MAXNUM) {
    mymemcpy(popup->items[popup->itemNum], item, strlen(item) + 1);
    popup->itemNum++;
  }
}

// 默认绘制函数
void POPUP_DefaultPaint(WIN_PopupStruct *popup) {
  int x = 0;
  int y = 0;
  int x_size = ((WIN_WindowStruct *)popup)->x_size;
  int y_size = ((WIN_WindowStruct *)popup)->y_size;
  char txt_buff[20] = {0};

  WIN_PaintBackGround((WIN_WindowStruct *)popup);

  // 绘制半透明背景
  WIN_SetLcdColor(0x342f2a);
  WIN_FillRectByColorAlpha(x, y, x_size, y_size, 16);

  // 显示选择框
  x += 2;
  y += 2;
  x_size -= 4;
  y_size -= 4;
  int step = WIN_GetFontHight();
  if (step < popup->y_step)
    step = popup->y_step;
  WIN_SetLcdColor(0xa100a1);
  WIN_FillRectByColorAlpha(x, y + step * popup->index, x_size, step, 16);

  // 显示条目
  WIN_SetFontMode(WIN_DRAWMODE_ALONE);
  WIN_SetLcdColor(((WIN_WindowStruct *)popup)->color);
  for (int i = 0; i < popup->itemNum; i++) {
    WIN_DrawTxtCenterAtRect(popup->items[i], x, y + i * step, x_size, step);
  }

  // 绘制边框
  WIN_SetLcdColor(0);
  WIN_DrawRect(0, 0, ((WIN_WindowStruct *)popup)->x_size,
               ((WIN_WindowStruct *)popup)->y_size);
}

// 默认消息处理函数
void POPUP_DefaultMsgLoop(WIN_PopupStruct *popup, WIN_MsgStruct *msg) {
  WIN_MoveStruct *m = 0;
  WIN_KeyStruct *k = 0;
  switch (msg->msg) {
  case WIN_MSG_PAINT:
    POPUP_DefaultPaint(popup);
    break;
  case WIN_MSG_KEY:
    k = msg->data.p;
    if (k->shortPress & KEY_VALUE_DOWN) {
      if (popup->index < popup->itemNum - 1)
        popup->index++;
      else
        popup->index = 0;
      WIN_SetInvalid((WIN_WindowStruct *)popup);
    } else if (k->shortPress & KEY_VALUE_UP) {
      if (popup->index > 0)
        popup->index--;
      else
        popup->index = popup->itemNum - 1;
      WIN_SetInvalid((WIN_WindowStruct *)popup);
    } else if (k->shortPress & KEY_VALUE_ENTER) {
      // 确定，返回所选项目索引
      WIN_SetBlockWinReturn(popup->index, 0, 0);
      ((WIN_WindowStruct *)popup)->deleteWindow((WIN_WindowStruct *)popup);
    } else if (k->shortPress & KEY_VALUE_HOME) {
      // 返回，什么也没选
      WIN_SetBlockWinReturn(-1, 0, 0);
      ((WIN_WindowStruct *)popup)->deleteWindow((WIN_WindowStruct *)popup);
    }
    break;
  case WIN_MSG_MOVE:
    m = msg->data.p;
    switch (m->moveType) {
    case MOVE_DATA_SHORT:
      popup->index = m->y_move / popup->y_step;
      if (popup->index > popup->itemNum - 1)
        popup->index = popup->itemNum - 1;
      // 确定，返回所选项目索引
      WIN_SetBlockWinReturn(popup->index, 0, 0);
      ((WIN_WindowStruct *)popup)->deleteWindow((WIN_WindowStruct *)popup);
      break;
    case MOVE_DATA_OUTSIDE:
      // 返回，什么也没选
      WIN_SetBlockWinReturn(-1, 0, 0);
      ((WIN_WindowStruct *)popup)->deleteWindow((WIN_WindowStruct *)popup);
      break;
    case MOVE_DATA_TOUCHIN:
      popup->index = m->y_move / popup->y_step;
      if (popup->index > popup->itemNum - 1)
        popup->index = popup->itemNum - 1;
      WIN_SetInvalid((WIN_WindowStruct *)popup);
    default:
      break;
    }
    break;
  default:
    WIN_DefaultMsgLoop((WIN_WindowStruct *)popup, msg);
    break;
  }
}

// 在指定位置弹出菜单
int POPUP_SelectItem(WIN_WindowStruct *base, char **item, int itemNum, int x,
                     int y) {
  int x_size = 0;
  int y_size = itemNum * WIN_GetFontHight() + 4;
  WIN_PopupStruct *popup = WIN_CreatPopup(base, 0, x, y, x_size, y_size);
  if (y_size < itemNum * popup->y_step + 4)
    y_size = itemNum * popup->y_step + 4;
  for (int i = 0; i < itemNum; i++) {
    int len = strlen(item[i]);
    POPUP_AddItem(popup, item[i]);
    if (x_size < len)
      x_size = len;
  }
  x_size = (x_size + 1) * WIN_GetFontWidth() / 2 + 4;
  if (x + x_size > base->x_size)
    x -= x + x_size - base->x_size;
  if (y + y_size > base->y_size)
    y -= y + y_size - base->y_size;
  ((WIN_WindowStruct *)popup)->x = x;
  ((WIN_WindowStruct *)popup)->y = y;
  ((WIN_WindowStruct *)popup)->x_size = x_size;
  ((WIN_WindowStruct *)popup)->y_size = y_size;
  popup->y_step = y_size / itemNum;

  // 设置弹出框的背景
  WIN_SetBackPic((WIN_WindowStruct *)popup);

  WIN_ShowWindow((WIN_WindowStruct *)popup);
  return WIN_RunBlock((WIN_WindowStruct *)popup);
}