Added ServerApp code for BBitmap handling

Added some support functions to ServerBitmap
BitmapManager now adds ID tokens to ServerBitmaps


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2898 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/servers/app/server/BitmapManager.cpp

@@ -129,6 +129,13 @@ ServerBitmap * BitmapManager::CreateBitmap(BRect bounds, color_space space, int3
 	}
 	bmp->_area=area_for(bmpbuffer);
 	bmp->_buffer=bmpbuffer;
+	bmp->_token=tokenizer.GetToken();
+	
+	// calculate area offset
+	area_info ai;
+	get_area_info(bmp->_area,&ai);
+	bmp->_offset=bmpbuffer-(uint8*)ai.address;
+	
 	bmplist->AddItem(bmp);
 	release_sem(lock);
 	return bmp;

src/servers/app/server/ServerApp.cpp

@@ -30,7 +30,9 @@
 #include <PortLink.h>
 #include <stdio.h>
 #include <string.h>
+#include <ServerProtocol.h>
 
+#include "BitmapManager.h"
 #include "CursorManager.h"
 #include "Desktop.h"
 #include "DisplayDriver.h"
@@ -39,7 +41,6 @@
 #include "ServerWindow.h"
 #include "ServerCursor.h"
 #include "ServerBitmap.h"
-#include "ServerProtocol.h"
 #include "ServerConfig.h"
 #include "LayerData.h"
 
@@ -248,7 +249,7 @@ int32 ServerApp::MonitorApp(void *data)
 				}
 				default:
 				{
-					app->DispatchMessage(msgcode, msgbuffer);
+					app->_DispatchMessage(msgcode, msgbuffer);
 					break;
 				}
 			}
@@ -275,7 +276,7 @@ int32 ServerApp::MonitorApp(void *data)
 	All attachments are placed in the buffer via a PortLink, so it will be a 
 	matter of casting and incrementing an index variable to access them.
 */
-void ServerApp::DispatchMessage(int32 code, int8 *buffer)
+void ServerApp::_DispatchMessage(int32 code, int8 *buffer)
 {
 	int8 *index=buffer;
 	LayerData ld;
@@ -350,6 +351,78 @@ void ServerApp::DispatchMessage(int32 code, int8 *buffer)
 			}
 			break;
 		}
+		case AS_CREATE_BITMAP:
+		{
+			// Allocate a bitmap for an application
+			
+			// Attached Data: 
+			// 1) port_id reply port
+			// 2) BRect bounds
+			// 3) color_space space
+			// 4) int32 bitmap_flags
+			// 5) int32 bytes_per_row
+			// 6) int32 screen_id::id
+			
+			// Reply Code: SERVER_TRUE
+			// Reply Data:
+			//	1) int32 server token
+			//	2) area_id id of the area in which the bitmap data resides
+			//	3) int32 area pointer offset used to calculate fBasePtr
+			
+			// First, let's attempt to allocate the bitmap
+			port_id replyport=*((port_id*)index); index+=sizeof(port_id);
+			BRect r=*((BRect*)index); index+=sizeof(BRect);
+			color_space cs=*((color_space*)index); index+=sizeof(color_space);
+			int32 f=*((int32*)index); index+=sizeof(int32);
+			int32 bpr=*((int32*)index); index+=sizeof(int32);
+
+			screen_id s;
+			s.id=*((int32*)index);
+			
+			ServerBitmap *sbmp=bitmapmanager->CreateBitmap(r,cs,f,bpr,s);
+			if(sbmp)
+			{
+				// list for doing faster lookups for a bitmap than what the BitmapManager
+				// can do.
+				_bmplist->AddItem(sbmp);
+				_applink->SetOpCode(SERVER_TRUE);
+				_applink->Attach(sbmp->Token());
+				_applink->Attach(sbmp->Area());
+				_applink->Attach(sbmp->AreaOffset());
+				_applink->Flush();
+			}
+			else
+			{
+				// alternatively, if something went wrong, we reply with SERVER_FALSE
+				write_port(replyport,SERVER_FALSE,NULL,0);
+			}
+			
+			break;
+		}
+		case AS_DELETE_BITMAP:
+		{
+			// Delete a bitmap's allocated memory
+
+			// Attached Data:
+			// 1) int32 reply port
+			// 2) int32 token
+		
+			// Reply Code: SERVER_TRUE if successful, 
+			//				SERVER_FALSE if the buffer was already deleted or was not found
+			port_id replyport=*((port_id*)index); index+=sizeof(port_id);
+			
+			ServerBitmap *sbmp=_FindBitmap(*((int32*)index));
+			if(sbmp)
+			{
+				_bmplist->RemoveItem(sbmp);
+				bitmapmanager->DeleteBitmap(sbmp);
+				write_port(replyport,SERVER_TRUE,NULL,0);
+			}
+			else
+				write_port(replyport,SERVER_FALSE,NULL,0);
+			
+			break;
+		}
 		case AS_SET_SCREEN_MODE:
 		{
 			// Attached data
@@ -451,3 +524,20 @@ void ServerApp::DispatchMessage(int32 code, int8 *buffer)
 		}
 	}
 }
+
+/*!
+	\brief Looks up a ServerApp's ServerBitmap in its list
+	\param token ID token of the bitmap to find
+	\return The bitmap having that ID or NULL if not found
+*/
+ServerBitmap *ServerApp::_FindBitmap(int32 token)
+{
+	ServerBitmap *temp;
+	for(int32 i=0; i<_bmplist->CountItems();i++)
+	{
+		temp=(ServerBitmap*)_bmplist->ItemAt(i);
+		if(temp && temp->Token()==token)
+			return temp;
+	}
+	return NULL;
+}

src/servers/app/server/ServerApp.h

@@ -71,7 +71,8 @@ public:
 protected:
 	friend AppServer;
 	friend ServerWindow;
-	void DispatchMessage(int32 code, int8 *buffer);
+	void _DispatchMessage(int32 code, int8 *buffer);
+	ServerBitmap *_FindBitmap(int32 token);
 
 	port_id _sender,_receiver;
 	BString _signature;

src/servers/app/server/ServerBitmap.h

@@ -57,6 +57,9 @@ public:
 	*/
 	area_id Area(void) { return _area; }
 	
+	// Returns the offset of the bitmap in its area
+	int32 AreaOffset(void) { return _offset; }
+	
 	//! Returns the bitmap's buffer
 	uint8 *Bits(void) { return _buffer; }
 	uint32 BitsLength(void);
@@ -82,6 +85,9 @@ public:
 	//! Returns whether the bitmap is valid
 	bool InitCheck(void) { return _initialized; }
 
+	//! Returns the identifier token for the bitmap
+	int32 Token(void) { return _token; }
+	
 protected:
 	friend BitmapManager;
 	
@@ -104,6 +110,8 @@ protected:
 	color_space _space;
 	int32 _flags;
 	int _bpp;
+	int32 _token;
+	int32 _offset;
 };
 
 #endif