+ if( Prev )
+ *Prev = prev;
+
+ if( !line || line->Num > LineNum )
+ return NULL;
+ return line;
+}
+
+void Renderer_RichText_int_UpdateCursorOfs(tRichText_Window *Info)
+{
+ tRichText_Line *line = Info->CursorLine;
+ size_t ofs = 0;
+ if( line )
+ {
+ for( int i = 0; i < Info->CursorCol && ofs < line->ByteLength; i ++ )
+ {
+ ofs += ReadUTF8(line->Data + ofs, NULL);
+ }
+ }
+ Info->CursorBytePos = ofs;
+}
+
+int Renderer_RichText_HandleIPC_SetAttr(tWindow *Window, size_t Len, const void *Data)
+{
+ tRichText_Window *info = Window->RendererInfo;
+ const struct sRichTextIPC_SetAttr *msg = Data;
+ if(Len < sizeof(*msg)) return -1;
+
+ _SysDebug("RichText Attr %i set to %x", msg->Attr, msg->Value);
+ switch(msg->Attr)
+ {
+ case _ATTR_DEFBG:
+ info->DefaultBG = msg->Value;
+ break;
+ case _ATTR_DEFFG:
+ info->DefaultFG = msg->Value;
+ break;
+ case _ATTR_CURSORPOS: {
+ int newRow = msg->Value >> 12;
+ int newCol = msg->Value & 0xFFF;
+ // Force redraw of old and new row
+ tRichText_Line *line = Renderer_RichText_int_GetLine(Window, info->CursorRow, NULL);
+ if( line )
+ line->bIsClean = 0;
+ if( newRow != info->CursorRow ) {
+ line = Renderer_RichText_int_GetLine(Window, newRow, NULL);
+ if(line)
+ line->bIsClean = 0;
+ }
+ info->CursorRow = newRow;
+ info->CursorCol = newCol;
+ info->CursorLine = line;
+ Renderer_RichText_int_UpdateCursorOfs(info);
+ WM_Invalidate(Window, 1);
+ break; }
+ case _ATTR_SCROLL:
+ // TODO: Set scroll flag
+ break;
+ case _ATTR_LINECOUNT:
+ info->nLines = msg->Value;
+ break;
+ }
+
+ return 0;
+}
+
+int Renderer_RichText_HandleIPC_WriteLine(tWindow *Window, size_t Len, const void *Data)
+{
+ tRichText_Window *info = Window->RendererInfo;
+ const struct sRichTextIPC_WriteLine *msg = Data;
+ if( Len < sizeof(*msg) ) return -1;
+ if( msg->Line >= info->nLines ) return 1; // Bad count
+
+ tRichText_Line *prev = NULL;
+ tRichText_Line *line = Renderer_RichText_int_GetLine(Window, msg->Line, &prev);
+ size_t data_bytes = Len - sizeof(*msg);
+ int reqspace = (data_bytes + LINE_SPACE_UNIT-1) & ~(LINE_SPACE_UNIT-1);
+ tRichText_Line *new = NULL;
+ if( !line )
+ {
+ // New line!
+ new = malloc(sizeof(*line) + reqspace);
+ new->Next = (prev ? prev->Next : NULL);
+ new->Prev = prev;
+ new->Num = msg->Line;
+ }
+ else if( line->Space < reqspace )
+ {
+ // Need to allocate more space
+ new = realloc(line, sizeof(*line) + reqspace);
+ }
+ else
+ {
+ // It fits :)
+ }
+ if( new )
+ {
+ // TODO: Bookkeeping on how much memory each window uses
+ new->Space = reqspace;
+ if(new->Prev) new->Prev->Next = new;
+ else info->FirstLine = new;
+ if(new->Next) new->Next->Prev = new;
+ line = new;
+ }
+ line->ByteLength = data_bytes - 1;
+ memcpy(line->Data, msg->LineData, data_bytes);
+ line->bIsClean = 0;
+
+ _SysDebug("RichText: %p - Write %i %i'%.*s'", Window, line->Num, line->ByteLength,
+ line->ByteLength, line->Data);
+
+ if( line->Num == info->CursorRow ) {
+ info->CursorLine = line;
+ info->CursorBytePos = MIN(info->CursorBytePos, line->ByteLength);
+ }
+
+// WM_Invalidate(Window, 1);
+
+ return 0;
+}
+
+int Renderer_RichText_HandleIPC_ScrollRange(tWindow *Window, size_t Len, const void *Data)
+{
+ tRichText_Window *info = Window->RendererInfo;
+ const struct sRichTextIPC_ScrollRange *msg = Data;
+ if( Len < sizeof(*msg) ) return -1;
+
+ if( msg->First >= info->nLines )
+ return 1; // Bad start
+ if( msg->Count > info->nLines - msg->First )
+ return 1; // Bad count
+ if( msg->Count == 0 ) {
+ // No-op
+ return 0;
+ }
+
+ // Find the range start
+ tRichText_Line *line = info->FirstLine;
+ tRichText_Line *prev = NULL;
+ while( line && line->Num < msg->First ) {
+ prev = line;
+ line = line->Next;
+ }
+ if( !line ) {
+ _SysDebug("RichText ScrollRange: Search for %i ran off end, nlines=%i",
+ msg->First, info->nLines);
+ }
+
+ if( msg->Count < 0 )
+ {
+ _SysDebug("TODO: RichText ScrollRange -ve");
+ }
+ else
+ {
+ if( msg->First <= info->FirstVisRow && info->FirstVisRow < msg->First+msg->Range )
+ info->FirstVisLine = NULL;
+
+ // Remove 'msg->Count' lines from beginning of the range, ...
+ while( line && line->Num < msg->First + msg->Count )
+ {
+ tRichText_Line *next = line->Next;
+ _SysDebug("- RichText ScrollRange: Remove %i '%.*s'",
+ line->Num, line->ByteLength, line->Data);
+ free(line);
+ line = next;
+ }
+ // Fix up list
+ if( prev )
+ prev->Next = line;
+ else
+ info->FirstLine = line;
+ if(line)
+ line->Prev = prev;
+ // ... and shift ->Num down for the rest
+ for( ; line && line->Num < msg->First + msg->Range; line = line->Next )
+ {
+ line->Num -= msg->Count;
+ if( line->Num >= info->FirstVisRow && !info->FirstVisLine )
+ info->FirstVisLine = line;
+ }
+
+ info->nLines -= msg->Count;
+ }
+
+ info->bNeedsFullRedraw = 1;
+
+ return 0;
+}
+
+void Renderer_RichText_HandleKeyFire(tWindow *Window, tRichText_Window *Info, const struct sWndMsg_KeyAction *Msg)
+{
+ tRichText_Line *line = Info->CursorLine;
+ size_t len = WriteUTF8(NULL, Msg->UCS32);
+ switch(Msg->UCS32)
+ {
+ case 0:
+ switch(Msg->KeySym)
+ {
+ case KEYSYM_RIGHTARROW:
+ if( Info->CursorBytePos == line->ByteLength )
+ break;
+ Info->CursorBytePos += ReadUTF8(line->Data + Info->CursorBytePos, NULL);
+ Info->CursorCol ++;
+ break;
+ case KEYSYM_LEFTARROW:
+ if( Info->CursorBytePos == 0 )
+ break;
+ Info->CursorBytePos -= ReadUTF8Rev(line->Data, Info->CursorBytePos, NULL);
+ Info->CursorCol --;
+ break;
+ case KEYSYM_UPARROW:
+ _SysDebug("TODO: RichText edit up line");
+ break;
+ case KEYSYM_DOWNARROW:
+ _SysDebug("TODO: RichText edit down line");
+ break;
+ default:
+ // No effect
+ return ;
+ }
+ break;
+ case '\n': // Newline
+ _SysDebug("TODO: RichText edit newline");
+ break;
+ case '\b': // Backspace
+ if( Info->CursorBytePos == 0 )
+ return ;
+ len = ReadUTF8Rev(line->Data, Info->CursorBytePos, NULL);
+ Info->CursorBytePos -= len;
+ Info->CursorCol --;
+ if(0)
+ case '\x7f': // Delete
+ len = ReadUTF8(line->Data + Info->CursorBytePos, NULL);
+ if( Info->CursorBytePos == line->ByteLength )
+ return ;
+ memmove(line->Data + Info->CursorBytePos, line->Data + Info->CursorBytePos + len,
+ line->ByteLength - Info->CursorBytePos - len);
+ line->ByteLength -= len;
+ _SysDebug("RichText: %p Backspace/Delete '%.*s'", Window,
+ line->ByteLength, line->Data);
+ break;
+ default:
+ // Increase buffer size
+ if( line->ByteLength + len > line->Space ) {
+ line->Space += LINE_SPACE_UNIT;
+ tRichText_Line *nl = realloc(line, sizeof(*line) + line->Space);
+ if( nl == NULL )
+ return ;
+ if( nl != line ) {
+ *(line->Prev ? &line->Prev->Next : &Info->FirstLine) = nl;
+ if(line->Next)
+ line->Next->Prev = nl;
+ if(Info->FirstVisLine == line)
+ Info->FirstVisLine = nl;
+ Info->CursorLine = nl;
+ line = nl;
+ }
+ }
+ // Shift data
+ memmove(line->Data + Info->CursorBytePos + len, line->Data + Info->CursorBytePos,
+ line->ByteLength - Info->CursorBytePos);
+ // Encode
+ WriteUTF8(line->Data + Info->CursorBytePos, Msg->UCS32);
+ Info->CursorBytePos += len;
+ Info->CursorCol ++;
+ line->ByteLength += len;
+
+ _SysDebug("RichText: %p Appended %X '%.*s' to line %i", Window,
+ Msg->UCS32, len, line->Data + Info->CursorBytePos - len,
+ line->Num);
+ break;
+ }
+ // Invalidate line
+ line->bIsClean = 0;
+ WM_Invalidate(Window, 1);