X11 Work Bench Toolkit  1.0
child_frame.h File Reference

Child Frame API functions. More...

#include "text_object.h"
#include "frame_window.h"

Go to the source code of this file.


#define CHILD_FRAME_TAG   (*((const unsigned int * const)"FWCF"))
 TAG for the WBChildFrame structure.
#define CHILD_FRAME_UI_TAG   ((WB_UINT32)'F' | ((WB_UINT32)'W' << 8) | ((WB_UINT32)'C' << 16) | ((WB_UINT32)'U' << 24)) /* FWCU */
 TAG for the WBChildFrameUI structure.
#define FW_FILE_NEW_ACCEL   "Ctrl+N"
#define FW_FILE_CLOSE_ACCEL   "Ctrl+F4"
#define FW_FILE_OPEN_ACCEL   "Ctrl+O"
#define FW_FILE_SAVE_ACCEL   "Ctrl+S"
#define FW_FILE_SAVE_AS_ACCEL   "Ctrl+Shift+S"
#define FW_FILE_SAVE_ALL_ACCEL   "Ctrl+Shift+L"
#define FW_EDIT_CUT_ACCEL   "Ctrl+X"
#define FW_EDIT_COPY_ACCEL   "Ctrl+C"
#define FW_EDIT_PASTE_ACCEL   "Ctrl+V"
#define FW_EDIT_SELECT_NONE_ACCEL   "Ctrl+Shift+A"


int FWInitChildFrame (WBChildFrame *pChildFrame, WBFrameWindow *pOwner, XFontSet rFontSet, const char *szFocusMenu, const WBFWMenuHandler *pHandlerArray, WBWinEvent pUserCallback, int fFlags)
 Initialize a child frame (assumed to be a base 'class' for the window) More...
void FWDestroyChildFrame (WBChildFrame *pChildFrame)
 Destroy an Child Frame. More...
void FWSetChildFrameMenu (WBChildFrame *pChildFrame, const char *szFocusMenu)
 Function to assign the menu resource to a Child Frame. More...
void FWSetChildFrameMenuHandlers (WBChildFrame *pChildFrame, const WBFWMenuHandler *pHandlerArray)
 Function to assign menu handlers to a Child Frame. More...
void FWSetChildFrameDisplayName (WBChildFrame *pChildFrame, const char *szDisplayName)
 Assign the display name. More...
void FWSetChildFrameImageAtom (WBChildFrame *pChildFrame, Atom aImage)
 Assign the image atom for the child frame. the image appears in the tab associated with the child frame. More...
void FWSetChildFrameExtent (WBChildFrame *pChildFrame, int iXExtent, int iYExtent)
 Set the X,Y extent for the child frame (notifies everything) More...
void FWSetChildFrameScrollInfo (WBChildFrame *pChildFrame, int iRow, int iMaxRow, int iCol, int iMaxCol, int iRowHeight, int iColWidth)
 Set the X,Y extent for the child frame (notifies everything) More...
void FWChildFrameRecalcLayout (WBChildFrame *pChildFrame)
 Child frame notification callback (called by frame window) More...
void FWChildFrameStatusChanged (WBChildFrame *pChildFrame)
 Notify Child Frame to update status text in Frame Window. More...
int FWChildFrameQueryClose (WBChildFrame *pChildFrame)
 Returns if it's safe to close the child frame; prompts user as needed. More...
int FWChildFrameEvent (Window wID, XEvent *pEvent)
 Default event handler for Child Frame window. More...
static __inline__ WBChildFrameFWGetChildFrameStruct (Window wID)
 Obtain the associated WBChildFrame structure pointer for a Window ID. More...

Detailed Description

Child Frame API functions.

Child Frames are child windows that display a tab in the Frame window, and have specialized menus and menu handlers associated with them.
The Child Frame also provides for horizontal and vertical scrolling of the display surface, as needed, varying the display region.
A derived window will need to register the appropriate callbacks, and have the 'WBChildFrame' structure as the first member of its own structure. When the derived window creates the structure, it must initialize its own structure first, and then call FWInitChildFrame() to complete the process. And when the drived window is destroyed, it must call FWDestroyChildFrame() to complete the 'destruction' process.
The behavior of a Child Frame is like a 'base class' in C++, with a kind of polymorphism and abstraction used by the containing WBFrameWindow to manage focus, tabs, and layout changes.
The Child Frame then handles scrolling and 'menu change on focus change', so that each type of Child Frame can have its own menu. The Frame Window will change the displayed menu according to the Child Frame that has the current focus, and display a default menu when there is no Child Frame.
A derived Child Frame maintains its own data as well as handling events. So, rather than abstracting the data from the Child Frame, this toolkit combines them (as it is simpler to do so). If you need extra levels of abstraction, just create more 'derived' versions from your own designs, and abstract the 'next level up'.

Definition in file child_frame.h.