initial import

git-svn-id: file:///home/notaz/opt/svn/PicoDrive@2 be3aeb3a-fb24-0410-a615-afba39da0efa

platform/win32/GenaDrive/FileMenu.cpp

@@ -0,0 +1,188 @@
+
+#include "app.h"
+#include "FileMenu.h"
+
+class FileMenu FileMenu;
+
+FileMenu::FileMenu()
+{
+  memset(this,0,sizeof(*this));
+}
+
+int FileMenu::init()
+{
+  memset(this,0,sizeof(*this));
+  strcpy(currentPath,HOME "roms");
+
+  return 0;
+}
+
+int FileMenu::scan()
+{
+  char path[260];
+
+  memset(path,0,sizeof(path));
+
+  // Scan for all the roms in the current directory:
+  nameReset();
+
+  sprintf(path,"%.240s\\*.bin", currentPath); nameFind(path);
+  sprintf(path,"%.240s\\*.smd", currentPath); nameFind(path);
+  sprintf(path,"%.240s\\*.zip",currentPath); nameFind(path);
+
+  return 0;
+}
+
+void FileMenu::exit()
+{
+  free(nameList);
+  memset(this,0,sizeof(*this));
+}
+
+int FileMenu::render()
+{
+  int x=0,y=0;
+  int pos=0,index=0;
+  WCHAR text[64];
+  int height=24;
+
+  memset(text,0,sizeof(text));
+
+  x=120; y=224;
+  y-=(choiceFocus*height)>>8;
+
+  while (pos<nameSize)
+  {
+    char *name=NULL;
+
+    name=nameList+pos;
+
+    if (y>-height && y<MainHeight)
+    {
+      unsigned int colour=0xffffff;
+
+      // If this line is visible:
+      wsprintfW(text,L"%.42S",name);
+      if (index==(choiceFocus>>8)) colour=0x00ff40;
+
+      FontSetColour(colour);
+      FontText(text,x,y);
+    }
+        
+    y+=height;
+    pos+=strlen(name)+1; // Skip to next string
+    index++;
+  }
+
+  return 0;
+}
+
+int FileMenu::scroll(int amount)
+{
+  int max=0;
+
+  choiceFocus+=amount;
+
+  max=nameCount<<8;
+  if (choiceFocus<0) choiceFocus=0;
+  if (choiceFocus>=max) choiceFocus=max-1;
+
+  return 0;
+}
+
+// Get the currently highlighted filename
+int FileMenu::getFilePath(char *path)
+{
+  int focus=0;
+  int pos=0;
+  char *name=NULL;
+
+  // Find where the user is focused
+  focus=choiceFocus>>8;
+  pos=nameOffset(focus); if (pos<0) return 1;
+
+  name=nameList+pos;
+
+  // Return path and name:
+  sprintf(path,"%.128s\\%.128s",currentPath,name);
+  return 0;
+}
+
+// ----------------------------------------------------------------------
+int FileMenu::nameReset()
+{
+  free(nameList); nameList=NULL;
+  nameSize=nameMax=nameCount=0;
+
+  return 0;
+}
+
+int FileMenu::nameFind(char *path)
+{
+  HANDLE find=NULL;
+  WIN32_FIND_DATA wfd;
+ 
+  memset(&wfd,0,sizeof(wfd));
+
+  find=FindFirstFile(path,&wfd);
+  if (find==INVALID_HANDLE_VALUE) return 1;
+  
+  for (;;)
+  {
+    nameAdd(wfd.cFileName); // Add the name to the list
+
+    if (FindNextFile(find,&wfd)==0) break;
+  }
+
+  FindClose(find);
+  return 0;
+}
+
+int FileMenu::nameAdd(char *entry)
+{
+  int len=0;
+
+  len=strlen(entry);
+  // Check we have room for this entry:
+  if (nameSize+len+1>nameMax) nameSizeUp();
+  if (nameSize+len+1>nameMax) return 1;
+
+  // Add entry with zero at the end:
+  memcpy(nameList+nameSize,entry,len);
+  nameSize+=len+1;
+  nameCount++;
+
+  return 0;
+}
+
+int FileMenu::nameSizeUp()
+{
+
+  void *mem=NULL;
+  int add=256;
+
+  // Allocate more memory for the list:
+  mem=realloc(nameList,nameMax+add); if (mem==NULL) return 1;
+
+  nameList=(char *)mem;
+  memset(nameList+nameMax,0,add); // Blank new memory
+  nameMax+=add;
+  return 0;
+}
+
+int FileMenu::nameOffset(int index)
+{
+  int pos=0,i=0;
+
+  while (pos<nameSize)
+  {
+    char *name=nameList+pos;
+
+    if (i==index) return pos;
+
+    pos+=strlen(name)+1; // Skip to next string
+    i++;
+  }
+
+  return -1; // Unknown index
+}