Revision: 24448
http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=24448
Author: damien78
Date: 2009-11-10 13:56:46 +0100 (Tue, 10 Nov 2009)
Log Message:
-----------
Drag & drop implementation at GHOST level (only OSX for now)
The dragging sequence is performed in four phases:
- Start sequence (GHOST_kEventDraggingEntered) that tells a drag'n'drop
operation has started. Already gives the object data type, and the entering
mouse location
- Update mouse position (GHOST_kEventDraggingUpdated) sent upon each mouse move
until the drag'n'drop operation stops, to give the updated mouse position.
Useful to highlight a potential destination, and update the status (through
GHOST_setAcceptDragOperation) telling if the object can be dropped at the
current cursor position.
- Abort drag'n'drop sequence (GHOST_kEventDraggingExited) sent when the user
moved the mouse outside the window.
- Send the dropped data (GHOST_kEventDraggingDropDone)
- Outside of the normal sequence, dropped data can be sent
(GHOST_kEventDraggingDropOnIcon). This can happen when the user drops an object
on the application icon. (Also used in OSX to pass the filename of the document
the user doubled-clicked in the finder)
Note that the event handler is responsible for freeing the received data.
And the mouse position is sent directly in blender client coordinates (y=0 at
bottom)
The GHOST_setAcceptDragOperation(TRUE) call must be placed before the user
drops the object for it to be accepted.
Current handled data types :
- Text string
- Array of filenames (full paths)
- Bitmap image (not implemented yet)
Modified Paths:
--------------
trunk/blender/intern/ghost/GHOST_C-api.h
trunk/blender/intern/ghost/GHOST_ISystem.h
trunk/blender/intern/ghost/GHOST_Types.h
trunk/blender/intern/ghost/intern/GHOST_C-api.cpp
trunk/blender/intern/ghost/intern/GHOST_System.cpp
trunk/blender/intern/ghost/intern/GHOST_System.h
trunk/blender/intern/ghost/intern/GHOST_SystemCocoa.h
trunk/blender/intern/ghost/intern/GHOST_SystemCocoa.mm
trunk/blender/intern/ghost/intern/GHOST_WindowCocoa.h
trunk/blender/intern/ghost/intern/GHOST_WindowCocoa.mm
Added Paths:
-----------
trunk/blender/intern/ghost/intern/GHOST_EventDragnDrop.h
Modified: trunk/blender/intern/ghost/GHOST_C-api.h
===================================================================
--- trunk/blender/intern/ghost/GHOST_C-api.h 2009-11-10 12:08:02 UTC (rev
24447)
+++ trunk/blender/intern/ghost/GHOST_C-api.h 2009-11-10 12:56:46 UTC (rev
24448)
@@ -406,7 +406,18 @@
GHOST_TButtonMask mask,
int* isDown);
+
+/***************************************************************************************
+ ** Drag'n'drop operations
+
***************************************************************************************/
+
/**
+ * Tells if the ongoing drag'n'drop object can be accepted upon mouse drop
+ */
+extern void GHOST_setAcceptDragOperation(GHOST_SystemHandle systemhandle,
GHOST_TInt8 canAccept);
+
+
+/**
* Returns the event type.
* @param eventhandle The handle to the event
* @return The event type.
Modified: trunk/blender/intern/ghost/GHOST_ISystem.h
===================================================================
--- trunk/blender/intern/ghost/GHOST_ISystem.h 2009-11-10 12:08:02 UTC (rev
24447)
+++ trunk/blender/intern/ghost/GHOST_ISystem.h 2009-11-10 12:56:46 UTC (rev
24448)
@@ -351,6 +351,11 @@
*/
virtual GHOST_TSuccess getButtonState(GHOST_TButtonMask mask, bool&
isDown) const = 0;
+
+
/***************************************************************************************
+ ** Access to clipboard.
+
***************************************************************************************/
+
/**
* Returns the selection buffer
* @return Returns "unsinged char" from X11 XA_CUT_BUFFER0 buffer
@@ -363,6 +368,22 @@
*/
virtual void putClipboard(GHOST_TInt8 *buffer, bool selection) const =
0;
+
+
/***************************************************************************************
+ ** Drag'n'drop operations
+
***************************************************************************************/
+
+ /**
+ * Tells if the ongoing drag'n'drop object can be accepted upon mouse
drop
+ */
+ virtual void setAcceptDragOperation(bool canAccept) = 0;
+
+ /**
+ * Returns acceptance of the dropped object
+ * Usually called by the "object dropped" event handling function
+ */
+ virtual bool canAcceptDragOperation() const = 0;
+
protected:
/**
* Initialize the system.
Modified: trunk/blender/intern/ghost/GHOST_Types.h
===================================================================
--- trunk/blender/intern/ghost/GHOST_Types.h 2009-11-10 12:08:02 UTC (rev
24447)
+++ trunk/blender/intern/ghost/GHOST_Types.h 2009-11-10 12:56:46 UTC (rev
24448)
@@ -167,6 +167,12 @@
GHOST_kEventWindowUpdate,
GHOST_kEventWindowSize,
GHOST_kEventWindowMove,
+
+ GHOST_kEventDraggingEntered,
+ GHOST_kEventDraggingUpdated,
+ GHOST_kEventDraggingExited,
+ GHOST_kEventDraggingDropDone,
+ GHOST_kEventDraggingDropOnIcon,
GHOST_kEventTimer,
@@ -368,6 +374,30 @@
} GHOST_TEventWheelData;
+typedef enum {
+ GHOST_kDragnDropTypeUnknown =0,
+ GHOST_kDragnDropTypeFilenames, /*Array of strings representing file
names (full path) */
+ GHOST_kDragnDropTypeString, /* Unformatted text UTF-8 string */
+ GHOST_kDragnDropTypeBitmap /*Bitmap image data */
+} GHOST_TDragnDropTypes;
+
+typedef struct {
+ /** The x-coordinate of the cursor position. */
+ GHOST_TInt32 x;
+ /** The y-coordinate of the cursor position. */
+ GHOST_TInt32 y;
+ /** The dropped item type */
+ GHOST_TDragnDropTypes dataType;
+ /** The "dropped content" */
+ GHOST_TEventDataPtr data;
+} GHOST_TEventDragnDropData;
+
+typedef struct {
+ int count;
+ GHOST_TUns8 **strings;
+} GHOST_TStringArray;
+
+
/* original patch used floats, but the driver return ints and uns. We will
calibrate in view, no sense on doing conversions twice */
/* as all USB device controls are likely to use ints, this is also more future
proof */
//typedef struct {
Modified: trunk/blender/intern/ghost/intern/GHOST_C-api.cpp
===================================================================
--- trunk/blender/intern/ghost/intern/GHOST_C-api.cpp 2009-11-10 12:08:02 UTC
(rev 24447)
+++ trunk/blender/intern/ghost/intern/GHOST_C-api.cpp 2009-11-10 12:56:46 UTC
(rev 24448)
@@ -404,7 +404,14 @@
}
+void GHOST_setAcceptDragOperation(GHOST_SystemHandle systemhandle, GHOST_TInt8
canAccept)
+{
+ GHOST_ISystem* system = (GHOST_ISystem*) systemhandle;
+ system->setAcceptDragOperation(canAccept);
+}
+
+
GHOST_TEventType GHOST_GetEventType(GHOST_EventHandle eventhandle)
{
GHOST_IEvent* event = (GHOST_IEvent*) eventhandle;
Added: trunk/blender/intern/ghost/intern/GHOST_EventDragnDrop.h
===================================================================
--- trunk/blender/intern/ghost/intern/GHOST_EventDragnDrop.h
(rev 0)
+++ trunk/blender/intern/ghost/intern/GHOST_EventDragnDrop.h 2009-11-10
12:56:46 UTC (rev 24448)
@@ -0,0 +1,91 @@
+/**
+ * $Id: GHOST_EventDragnDrop.h 13161 2008-01-07 19:13:47Z hos $
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): Damien Plisson 11/2009
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef _GHOST_EVENT_DRAGNDROP_H_
+#define _GHOST_EVENT_DRAGNDROP_H_
+
+#include "GHOST_Event.h"
+
+/**
+ * Drag & drop event
+ *
+ * The dragging sequence is performed in four phases:
+ *
+ * <li> Start sequence (GHOST_kEventDraggingEntered) that tells a drag'n'drop
operation has started. Already gives the object data type,
+ * and the entering mouse location
+ *
+ * <li> Update mouse position (GHOST_kEventDraggingUpdated) sent upon each
mouse move until the drag'n'drop operation stops, to give the updated mouse
position.
+ * Useful to highlight a potential destination, and update the status (through
GHOST_setAcceptDragOperation) telling if the object can be dropped at
+ * the current cursor position.
+ *
+ * <li> Abort drag'n'drop sequence (GHOST_kEventDraggingExited) sent when the
user moved the mouse outside the window.
+ *
+ * <li> Send the dropped data (GHOST_kEventDraggingDropDone)
+ *
+ * <li> Outside of the normal sequence, dropped data can be sent
(GHOST_kEventDraggingDropOnIcon). This can happen when the user drops an object
+ * on the application icon. (Also used in OSX to pass the filename of the
document the user doubled-clicked in the finder)
+ *
+ * <br><br>Note that the event handler is responsible for freeing the received
data.
+ * <br>And the mouse positions are given in Blender coordinates (y=0 at bottom)
+ *
+ * <br>Currently supported object types :
+ * <li>UTF-8 string
+ * <li>array of strings representing filenames (GHOST_TStringArray)
+ * <li>bitmap image
+ */
+class GHOST_EventDragnDrop : public GHOST_Event
+{
+public:
+ /**
+ * Constructor.
+ * @param time The time this event was generated.
+ * @param type The type of this event.
+ * @param dataType The type of the drop candidate object
+ * @param window The window where the event occured
+ * @param x The x-coordinate of the location the
cursor was at at the time of the event.
+ * @param y The y-coordinate of the location the
cursor was at at the time of the event.
+ * @param data The "content" dropped in the window
+ */
+ GHOST_EventDragnDrop(GHOST_TUns64 time, GHOST_TEventType type,
GHOST_TDragnDropTypes dataType, GHOST_IWindow* window,
+ int x, int y,
GHOST_TEventDataPtr data)
+ : GHOST_Event(time, type, window)
+ {
+ m_dragnDropEventData.x = x;
+ m_dragnDropEventData.y = y;
+ m_dragnDropEventData.dataType = dataType;
+ m_dragnDropEventData.data = data;
+ m_data = &m_dragnDropEventData;
+ }
+
+protected:
+ /** The x,y-coordinates of the cursor position. */
+ GHOST_TEventDragnDropData m_dragnDropEventData;
+};
+
+#endif // _GHOST_EVENT_DRAGNDROP_H_
+
Modified: trunk/blender/intern/ghost/intern/GHOST_System.cpp
===================================================================
--- trunk/blender/intern/ghost/intern/GHOST_System.cpp 2009-11-10 12:08:02 UTC
(rev 24447)
+++ trunk/blender/intern/ghost/intern/GHOST_System.cpp 2009-11-10 12:56:46 UTC
(rev 24448)
@@ -54,6 +54,7 @@
GHOST_System::GHOST_System()
: m_displayManager(0), m_timerManager(0), m_windowManager(0),
m_eventManager(0), m_ndofManager(0)
{
+ m_canAcceptDragOperation = false;
}
@@ -275,7 +276,16 @@
return success;
}
+void GHOST_System::setAcceptDragOperation(bool canAccept)
+{
+ m_canAcceptDragOperation = canAccept;
+}
+bool GHOST_System::canAcceptDragOperation() const
+{
+ return m_canAcceptDragOperation;
+}
+
GHOST_TSuccess GHOST_System::init()
{
m_timerManager = new GHOST_TimerManager ();
Modified: trunk/blender/intern/ghost/intern/GHOST_System.h
===================================================================
--- trunk/blender/intern/ghost/intern/GHOST_System.h 2009-11-10 12:08:02 UTC
(rev 24447)
+++ trunk/blender/intern/ghost/intern/GHOST_System.h 2009-11-10 12:56:46 UTC
(rev 24448)
@@ -231,6 +231,21 @@
* @return Indication of success.
*/
virtual GHOST_TSuccess getButtonState(GHOST_TButtonMask mask, bool&
isDown) const;
+
+
/***************************************************************************************
+ ** Drag'n'drop operations
+
***************************************************************************************/
+
+ /**
+ * Tells if the ongoing drag'n'drop object can be accepted upon mouse
drop
+ */
+ virtual void setAcceptDragOperation(bool canAccept);
+
+ /**
+ * Returns acceptance of the dropped object
+ * Usually called by the "object dropped" event handling function
+ */
+ virtual bool canAcceptDragOperation() const;
/***************************************************************************************
** Other (internal) functionality.
@@ Diff output truncated at 10240 characters. @@
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