A Treeview control made by ucgui!

We made a Treeview Control Using ucgui! The Treeview control is not available in my version, so I made one myself.

This is ugly!

My personal mind is relatively simple, so the idea is also relatively simple! The subsequent code is also very simple.

Mainly as follows:

A node is placed in a form. For example, if a child node exists from the root node, a form is created. Its parent form is the form of the parent node, it is nested like a tree. This mainly facilitates the execution of ucgui message processes, such as node expansion and collapse, and the processing of length and width is very convenient.

The effect I have done is like this. Ah, it's too ugly. Programmers still cannot do the interface. (because it is on an embedded device and has no function, I just took a picture, the tab page on the right is also customized, without the built-in uggui ):

The Code is as follows (I didn't compile it separately. If there is any definition macro missing, I will do it by myself). If you are interested, please take a look.

// ============================ Header file ============== ==================/// typedef struct treenode_struct treenode; struct treenode_struct {int nodeid; // node idchar * nodename; // node name}; static treenode maintreenode [] ={{ 1, "device 1" },{ 2, "device 2" },{ 3, "device 3" },{ 4, "Device 4" },{ 5, "Device 5 "},}; wm_hwin createtreeview (int x, int y, int XS, int ys, wm_hwin hparent); // Add a subnode wm_hwin addtreenode (wm_hwin hparent, treenode * nodeinfo, int root );

// ============================== Code file ======== ========================================== //

# Include "createtreeview. H "# include" button. H "# include" text. H "# include" scrollbar. H "# include" string. H "# define windowsbackgroundcolor 0x6a4935 # define nodeheight 20 // height of node collapse # define wm_user_subnodesize wm_user + 102 static void _ cbmain (wm_message * PMSG ); // node callback static void _ cbtreenode (wm_message * PMSG); // callback static void _ cbnodeexpendbutton (wm_message * PMSG) by the expand node button ); // call back the static void _ cbnodebutton (wm_mes Sage * PMSG); // expand the static void expendnode (wm_hwin hwin, int flag); wm_callback * _ cbbtndefault, * _ cbscrollbardefault; wm_hwin createtreeview (int x, int y, int XS, int ys, wm_hwin hparent) {values (); values (fonthztext); values (gui_white, 0); values (windowsbackgroundcolor, 0); wm_hwin hwin = wm_createwindowaschild (X, y, xs, ys, hparent, wm_cf_show, _ Cbmain, 0); Return hwin;} static void _ cbmain (wm_message * PMSG) {Switch (PMSG-> msgid) {Case wm_paint: gui_setbkcolor (0x6a4935 ); gui_clear (); break; Case wm_user_change_scrollbar: {wm_hwin hwin, shwin, svwin; int Height = 0, width = 0; shwin = wm_getscrollbarh (wm_getparent (PMSG-> hwin )); svwin = wm_getscrollbarv (wm_getparent (PMSG-> hwin); hwin = wm_getfirstchild (PMSG-> hwin); While (wm_iswindow (hwin) {If (width <wm_getwinsi Zex (hwin) width = wm_getwinsizex (hwin); height + = wm_getwinsizey (hwin); hwin = equals (hwin);} If (wm_iswindow (shwin) {scrollbar_setnumitems (shwin, width) ;}if (wm_iswindow (svwin) {scrollbar_setnumitems (svwin, height) ;}break ;}default: wm_defaultproc (PMSG );}} // Add a subnode wm_hwin addtreenode (wm_hwin hparent, treenode * nodeinfo, int root) {wm_hwin nodehwin = 0; button_handle bhwin = 0; button_handle btexthwin = 0; b2style; int X, Y, xs, ys; If (wm_iswindow (hparent) {If (root = 1) {wm_hwin hwin = 0, lasthwin = 0; // Add hwin = wm_getfirstchild (hparent) after the last root node; while (wm_iswindow (hwin) {lasthwin = hwin; hwin = wm_getnextsibling (hwin );} if (lasthwin = 0) {x = 5; y = 5;} else {x = 5; y = wm_getwinorgy (lasthwin)-wm_getwinorgy (hparent) + wm_getwinsizey (lasthwin);} xs = wm_getwinsizex (hparent); ys = nodeheight; style = wm_cf_show;} else {X = 20; y = wm_getwindowsizey (hparent); xs = wm_getwinsizex (hparent); ys = nodeheight; style = wm_cf_show;} nodehwin = wm_createwindowaschild (X, Y, xs, ys, hparent, style, _ cbtreenode, 0); // expand the button to hide it. If a subnode is added, bhwin = button_createaschild (, 10, 10, nodehwin, 1, gui_ta_center | gui_ta_vcenter | style); wm_hidewin (bhwin); // node name btexthwin = button_createaschild (20, 0, strlen (nodeinfo-> nodename) * 10, nodeheight, nodehwin, 2, Wm_cf_show | callback | gui_ta_vcenter); wm_setcallback (bhwin, _ callback); _ cbbtndefault = wm_setcallback (btexthwin, _ cbnodebutton); // callback (btexthwin, callback | callback ); button_settext (btexthwin, nodeinfo-> nodename); values (btexthwin, 0); values (bhwin, 0); If (root = 0) {wm_hwin parentbhwin = wm_getfirstchild (hparent ); while (wm_iswindow (P Arentbhwin) {If (wm_getid (parentbhwin) = 1) {button_settext (parentbhwin, "+"); // display the expand button of the parent node, hidden wm_showwin (parentbhwin); break;} parentbhwin = wm_getnextsibling (parentbhwin);} return nodehwin;} // callback static void _ cbtreenode (wm_message * PMSG) {wm_message MSG; wm_hwin nexthwin; int XS, ys; Switch (PMSG-> msgid) {Case wm_user_subnodesize: // change the node height (the message sent when the child node is expanded or collapsed) YS = wm_getysize (PMSG-> hwin) + PMSG-> data. v; WM _ Setysize (PMSG-> hwin, ys); // If the width of the child node is greater than that of the parent node, you need to change the width of the parent node if (wm_getxsize (PMSG-> hwin) <wm_getxsize (PMSG-> hwinsrc) + 20) {xs = wm_getxsize (PMSG-> hwinsrc) + 20; wm_setxsize (PMSG-> hwin, XS );} // change the Y position of the following sibling node nexthwin = wm_getnextsibling (PMSG-> hwin); While (wm_iswindow (nexthwin) {If (wm_getid (nexthwin) = 0) wm_moveto (nexthwin, wm_getwinorgx (nexthwin), wm_getwinorgy (nexthwin) + PMSG-> data. v); nexthwin = wm_getnextsiblin G (nexthwin);} MSG. hwin = wm_getparent (PMSG-> hwin); MSG. msgid = wm_user_subnodesize; MSG. data. V = PMSG-> data. v; // change the parent node wm_sendmessage (MSG. hwin, & MSG); // set the wm_sendmessagenopara (wm_getparent (PMSG-> hwin), break); break; Case wm_paint: {int dy; gui_setbkcolor (windowsbackgroundcolor ); gui_clear ();/* If (! Wm_iswindow (wm_getnextsibling (wm_getparent (PMSG-> hwin) {DY = 10;} else {DY = 0;} gui_setcolor (gui_gray); gui_drawline (4,0, 4, wm_getwinsizey (PMSG-> hwin)-dy); gui_drawline (5, 9, 20, 9); */break;} default: wm_defaultproc (PMSG );}} // call back static void _ cbnodeexpendbutton (wm_message * PMSG) {Switch (PMSG-> msgid) {Case wm_paint: gui_clear (); break; Case wm_pid_state_changed: {wm_pid_state_changed_info * pid_state_changed_info; pid_state_changed_info = (wm_pid_state_changed_info *) PMSG-> data. p; If (pid_state_changed_info-> state> 0) {If (wm_getwinsizey (wm_getparent (PMSG-> hwin) = nodeheight) {button_settext (PMSG-> hwin, "-"); expendnode (wm_getparent (PMSG-> hwin), 1);} else {button_settext (PMSG-> hwin, "+ "); expendnode (wm_getparent (PMSG-> hwin), 0) ;}} break ;}_ cbbtndefault (PMSG) ;}// the node button calls back static void _ cbnodebutton (wm_message * PMSG) {Switch (PMSG-> msgid) {Case wm_paint: gui_setbkcolor (windowsbackgroundcolor); gui_clear (); break; Case wm_policy_parent: {int id = PMSG-> hwinsrc; if (PMSG-> data. V = wm_icationication_released) {;} break;} case wm_pid_state_changed: {Region * pid_state_changed_info; pid_state_changed_info = (Region *) PMSG-> data. p; If (pid_state_changed_info-> state> 0) {// expendnode (wm_getparent (PMSG-> hwin),) ;}}}_ cbbtndefault (PMSG );} static void _ cbschandle (wm_message * PMSG) {Switch (PMSG-> msgid) {Case wm_paint: windowsbackgroundcolor); gui_clear (); break ;}_ cbscrollbardefault (PMSG );} static void expendnode (wm_hwin hparent, int flag) {wm_hwin hwin; wm_message MSG; int I = 0, chheight = 0; hwin = wm_getfirstchild (hparent); While (wm_iswindow (hwin )) {If (wm_getid (hwin) = 0) {I ++; If (flag = 1) {MSG. hwin = hparent; MSG. data. V = wm_getwinsizey (hwin); chheight + = wm_getwinsizey (hwin); MSG. hwinsrc = hwin; MSG. msgid = wm_user_subnodesize; wm_sendmessage (hparent, & MSG); wm_moveto (hwin, wm_getwinorgx (hwin), wm_getwinorgy (hparent) + Digest (hparent)-Digest )); wm_showwin (hwin);} else {MSG. hwin = hparent; MSG. hwinsrc = hwin; MSG. data. V =-wm_getwinsizey (hwin); chheight + =-wm_getwinsizey (hwin); MSG. msgid = wm_user_subnodesize; wm_sendmessage (hparent, & MSG); wm_hidewin (hwin) ;}}hwin = wm_getnextsibling (hwin);} If (flag = 0) {// wm_setxsize (hparent, wm_setysize (hparent, nodeheight );}}