WMSetTextSeelctionFont/Color

2025-12-19 12:28:22 +01:00 · 2000-07-17 00:12:29 +00:00
parent 6ec980095a
commit ec6dce9c42
2 changed files with 412 additions and 319 deletions
--- a/WINGs/testtext.c
+++ b/WINGs/testtext.c
@@ -384,6 +384,8 @@ main(int argc, char **argv)
 	WMRulerMargins margins;
 	void *tb = NULL;

+	printf("copy and paste this string: \n
+		here is some <b> bold <i>italic <u>underlined</u> </i> </b> text :-) \n");

 	WMInitializeApplication("WMText", &argc, argv);
 	dpy = XOpenDisplay(NULL);
@@ -420,6 +422,7 @@ main(int argc, char **argv)
 	//margins = WMGetTextRulerMargins(text);


+#if 1


 	WMAppendTextStream(text, 
@@ -545,6 +548,7 @@ write something like a trivial tic-tac-toe game ");
 	WMAppendTextStream(text, " without knowing much Xlib. "
 		"<p><p>(BTW, don't  <i>press</i> that button that is <u>screeming</u>"
 		" to be pressed!");
+#endif



--- a/WINGs/wtext.c
+++ b/WINGs/wtext.c
@@ -18,12 +18,6 @@
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

-/* README README README README README README README
- * Nwanua: dont use // style comments please!
- * It doesnt work in lots of compilers out there :/
- * -Alfredo
- * README README README README README README README
- */

 #include "WINGsP.h"
 #include <X11/keysym.h>
@@ -39,9 +33,6 @@ use currentTextBlock and neighbours for fast paint and layout

 WMGetTextStreamAll...  WMGetTextStream WMGetTextSelection(if (selected) )

-the bitfield arrangement in this code assumes a little-endian 
-   machine...  might need a __BIG_ENDIAN__ define for arranging 
-   the bitfields efficiently for those big boys. 

 #endif

@@ -83,6 +74,7 @@ typedef struct _TextBlock {
 	Section *sections;			/* the region for layouts (a growable array) */
 								/* an _array_! of size _nsections_ */
 	
+
 	unsigned short used;		/* number of chars in this block */
 	unsigned short allocated;	/* size of allocation (in chars) */

@@ -147,6 +139,7 @@ typedef struct W_Text {
 	
 	WMBag		*gfxItems;	/* a nice bag containing graphic items */

+	WMHandlerID timerID;	/* for nice twinky-winky */
 	WMPoint clicked;		/* where in the _document_ was clicked */
 	unsigned short tpos;	/* the character position in the currentTextBlock */
 	unsigned short RESERVED;/* space taker upper... */
@@ -358,12 +351,13 @@ paintText(Text *tPtr)
 		} } } }
 	

-	if(tPtr->cursor.x != -23) { 
+	if (tPtr->flags.cursorShown && tPtr->cursor.x != -23 
+			&& tPtr->flags.focused) { 
 		int y = tPtr->cursor.y - tPtr->vpos;
 		XDrawLine(dpy, tPtr->db, tPtr->fgGC,
 			tPtr->cursor.x, y,
 			tPtr->cursor.x, y + tPtr->cursor.h);
-printf("%d %d %d\n", tPtr->cursor.x, tPtr->cursor.y, tPtr->cursor.h);
+//printf("%d %d %d\n", tPtr->cursor.x, tPtr->cursor.y, tPtr->cursor.h);
 	}	

 _copy_area:
@@ -391,16 +385,34 @@ _copy_area:

 }

+#define CURSOR_BLINK_ON_DELAY   600
+#define CURSOR_BLINK_OFF_DELAY  400
+
+static void
+blinkCursor(void *data)
+{
+    Text *tPtr = (Text*)data;
+
+	if (tPtr->flags.cursorShown) {
+		tPtr->timerID = WMAddTimerHandler(CURSOR_BLINK_OFF_DELAY, 
+			blinkCursor, data);
+    } else {
+		tPtr->timerID = WMAddTimerHandler(CURSOR_BLINK_ON_DELAY, 
+			blinkCursor, data);
+    }
+	paintText(tPtr);
+	tPtr->flags.cursorShown = !tPtr->flags.cursorShown;
+}

 static TextBlock *
-getFirstNonGraphicBlockFor(TextBlock *tb)
+getFirstNonGraphicBlockFor(TextBlock *tb, short dir)
 {
 	if (!tb)
 		return NULL;
 	while(tb) {
 		if (!tb->graphic)
 			break;
-		tb = tb->next;
+		tb = (dir? tb->next : tb->prior);
 	}

 	return tb;
@@ -414,7 +426,6 @@ cursorToTextPosition(Text *tPtr, int x, int y)
 	int done=False, s, pos, len, _w, _y, dir=1; /* 1 == "down" */
 	char *text;

-
 	y += (tPtr->vpos - tPtr->visible.y);
 	if (y<0) 
 		y = 0;
@@ -427,8 +438,6 @@ cursorToTextPosition(Text *tPtr, int x, int y)
 	tPtr->clicked.x = x;
 	tPtr->clicked.y = y;

-	/* first, which direction? Most likely, newly clicked 
-		position will be close to previous */
 	if (! (tb = tPtr->currentTextBlock)) {
 		if (! (tb = tPtr->firstTextBlock)) {
 			tPtr->tpos = 0;
@@ -436,23 +445,32 @@ cursorToTextPosition(Text *tPtr, int x, int y)
 		}
 	}

+	/* first, which direction? Most likely, newly clicked 
+		position will be close to previous */
 	dir = !(y < tb->sections[0].y);
-tb = tPtr->firstTextBlock;
-dir = 1;
+dir = 0;
+tb = tPtr->lastTextBlock;
+printf("%s\n", dir?"down":"up");

 	if (tPtr->flags.monoFont && tb->graphic) {
-		tb = getFirstNonGraphicBlockFor(tb);
+		tb = getFirstNonGraphicBlockFor(tb, 1);
 		if (!tb) {
-			tPtr->currentTextBlock = tPtr->firstTextBlock;
+			tPtr->currentTextBlock = 
+				(dir? tPtr->lastTextBlock : tPtr->firstTextBlock);
 			tPtr->tpos = 0;
 			return;
 		}
 	}

-	if(y == tb->sections[0].y)
+	s = (dir? 0 : tb->nsections-1);
+	if ( y >= tb->sections[s]._y 
+		&& y <= tb->sections[s]._y + tb->sections[s].h) { 
+			printf("got it\n");
 			goto _doneV;
+	}

-	/* get the first section of the first visible TextBlock */
+	/* get the first section of the TextBlock that lies about 
+		the vertical click point */
 	done = False;
 	while(!done && tb) { 

@@ -462,18 +480,14 @@ dir = 1;
 		}

 		s = (dir? 0 : tb->nsections-1);
-		while( (dir? (s<tb->nsections) : (s>=0) )) {
-//printf("y:%d   top:%d, bot%d :",  
-//y, tb->sections[s]._y, tb->sections[s].y + tb->sections[s].h);
-//output(tb->text, tb->used);
+		while(!done && (dir? (s<tb->nsections) : (s>=0) )) {
+
 			if ( y >= tb->sections[s]._y 
-				&& y <= tb->sections[s].y + tb->sections[s].h) { 
+				&& y <= tb->sections[s]._y + tb->sections[s].h) { 
 					done = True;
-					break;
 				} else {
 					dir? s++ : s--;
 				}
-				
 		}
 					
 		if (!done) {
@@ -481,86 +495,101 @@ dir = 1;
 				tb = (dir ? tb->next : tb->prior);
 			} else {
 				pos = tb->used;
-				goto _doneH;
+				break; //goto _doneH;
 			}
 		}
 	}

-_doneV:
+	
 	if (s<0 || s>=tb->nsections) {
 		s = (dir? tb->nsections-1 : 0);
 	}

+_doneV:
 	/* we have the line, which TextBlock on that line is it? */
 	pos = 0;
 	if (tPtr->flags.monoFont && tb->graphic)
-		tb = getFirstNonGraphicBlockFor(tb);
+		tb = getFirstNonGraphicBlockFor(tb, dir);
 	if (tb)  {
-		if(tb->sections[s].x >= x)
-			goto _doneH;
+		if ((dir? tb->sections[s].x >= x : tb->sections[s].x < x))
+			; //goto _doneH;
 		_y = tb->sections[s]._y;
 	}

 	while(tb) { 

 		if (tPtr->flags.monoFont && tb->graphic) {
-			tb = tb->next;
+			tb = (dir ? tb->next : tb->prior);
 			continue;
 		}

+		if (dir) {
 			if (tb->graphic) {
 				_w = WMWidgetWidth(tb->d.widget);
 			} else {
 				text = &(tb->text[tb->sections[s].begin]);
 				len = tb->sections[s].end - tb->sections[s].begin;
 				_w = WMWidthOfString(tb->d.font, text, len);
-		}
-
 				if (tb->sections[s].x + _w >= x)
 					break;
 				
-		if(tb->next) {
-			TextBlock *nxt = tb->next;
+			}
+		} else { 
+			if (tb->sections[s].x  <= x)
+				break;
+		}
+
+#if 0
+		if ((dir? tb->next : tb->prior)) {
+			TextBlock *nxt = (dir? tb->next : tb->prior);
 			if (tPtr->flags.monoFont && nxt->graphic) {
-				nxt = getFirstNonGraphicBlockFor(nxt);
+				nxt = getFirstNonGraphicBlockFor(nxt, dir);
 				if (!nxt) {
 					pos = 0;
 					goto _doneH;
 				}
 			}
 			if (_y != nxt->sections[s]._y) {
-				/* this must be the last on this line. stop */
-				pos = tb->used;
+				/* this must be the last/first on this line. stop */
+				pos = (dir? tb->used : 0);
 				goto _doneH;
 			}
 		}
+#endif

-		s = 0; 
-		tb = tb->next;
+		tb = (dir ? tb->next : tb->prior);
+		if (tb) 
+			s = (dir? 0 : tb->nsections-1);
 	}
 		
 	/* we have said TextBlock, now where within it? */
 	if (tb && !tb->graphic) {
+		WMFont *f = tb->d.font;
 		len = tb->sections[s].end - tb->sections[s].begin;
 		text = &(tb->text[tb->sections[s].begin]);

 		_w = x - tb->sections[s].x;
+		pos = 0;

-		while(pos<len && WMWidthOfString(tb->d.font, text, pos+1) <  _w)
+		while(pos<len && WMWidthOfString(f, text, pos+1) <  _w)
 			pos++;

+		tPtr->cursor.x = tb->sections[s].x + 
+			(pos? WMWidthOfString(f, text, pos) : 0);
 		pos += tb->sections[s].begin;
 _doneH:
 		tPtr->tpos = (pos<tb->used)? pos : tb->used;
 	}
 		
 	tPtr->currentTextBlock = tb;
+	tPtr->flags.cursorShown;
 	tPtr->cursor.h = tb->sections[s].h;
-	tPtr->cursor.y = _y;
-	tPtr->cursor.x = tPtr->clicked.x; //WMWidthOfString(tb->d.font, text, 
+	tPtr->cursor.y = tb->sections[s]._y;
+	paintText(tPtr);
+
+	
 if (!tb)
 printf("will hang :-)\n");
-paintText(tPtr);

 }

@@ -778,7 +807,8 @@ output(char *ptr, int len)
    char s[len+1]; 
    memcpy(s, ptr, len);
    s[len] = 0; 
-    printf(" s is [%s] (%d)\n",  s, strlen(s));
+    //printf(" s is [%s] (%d)\n",  s, strlen(s));
+    printf("[%s]\n",  s);
 }


@@ -838,6 +868,7 @@ printf("2 prev_y %d \n\n", tb->sections[tb->nsections-1]._y);
 		} 

 		if (tb->first) {
+output(tb->text, tb->used);
 			y += layOutLine(tPtr, items, nitems, x, y, pwidth, align);
 			x = 0;//tPtr->visible.x+2;
 			nitems = 0;
@@ -1007,6 +1038,26 @@ reqBlockSize(unsigned short requested)
 	return requested + 16 - (requested%16);
 }

+static void
+clearText(Text *tPtr)
+{
+	void *tb;
+	if (!tPtr->firstTextBlock) 
+		return;
+
+	while(tPtr->currentTextBlock) 
+		WMDestroyTextBlock(tPtr, WMRemoveTextBlock(tPtr));
+
+	printf("yadda clearText\n");
+
+	printf("remove the document\n");
+	tPtr->firstTextBlock = NULL;
+	tPtr->currentTextBlock = NULL;
+	tPtr->lastTextBlock = NULL;
+	//WMThawText(tPtr);
+	WMRefreshText(tPtr, 0, 0);
+}
+
 static void
 deleteTextInteractively(Text *tPtr, KeySym ksym)
 {
@@ -1031,11 +1082,15 @@ insertTextInteractively(Text *tPtr, char *text, int len)
 		}
 	}

+if (*text == 'a')
+	WMSetTextSelectionColor(tPtr, WMCreateNamedColor(tPtr->view->screen,
+"blue", False));
+
 	tb = tPtr->currentTextBlock;
 	if (!tb || tb->graphic) {
 		WMAppendTextStream(tPtr, text);
 		if (tPtr->currentTextBlock) { 
-			tPtr->tpos = tPtr->currentTextBlock->used-4;
+			tPtr->tpos = tPtr->currentTextBlock->used;
 		}
 		return;
 	}
@@ -1230,7 +1285,6 @@ printf("toggle ruler\n");
 		releaseSelection(tPtr);
 }

-
 static void
 handleWidgetPress(XEvent *event, void *data)
 {
@@ -1247,15 +1301,15 @@ handleWidgetPress(XEvent *event, void *data)
 	tPtr = (Text*)w;
 	printf("%p clicked on tb %p wif: (%c)%c", tPtr, tb,	
 		tPtr->firstTextBlock->text[0], tPtr->firstTextBlock->text[1]);
-	tPtr->currentTextBlock = getFirstNonGraphicBlockFor(tb);
+	tPtr->currentTextBlock = getFirstNonGraphicBlockFor(tb, 1);
 	if (!tPtr->currentTextBlock)
 		tPtr->currentTextBlock = tb;
 	tPtr->tpos = 0;
 	output(tPtr->currentTextBlock->text, tPtr->currentTextBlock->used);
-	if(!tPtr->flags.focused) {
-		WMSetFocusToWidget(tPtr);
-        tPtr->flags.focused = True;
-	} 	
+	//if (!tPtr->flags.focused) {
+	//	WMSetFocusToWidget(tPtr);
+    //  tPtr->flags.focused = True;
+	//} 	

 }

@@ -1274,6 +1328,8 @@ handleActionEvents(XEvent *event, void *data)
 		case KeyPress:
 			ksym = XLookupKeysym((XKeyEvent*)event, 0);  
 			if (ksym == XK_Shift_R || ksym == XK_Shift_L) { 
+WMSetTextSelectionFont(tPtr, WMBoldSystemFontOfSize(
+tPtr->view->screen, 18));
 				tPtr->flags.extendSelection = True;
 				return;
 			} 
@@ -1288,7 +1344,7 @@ handleActionEvents(XEvent *event, void *data)
 				XGrabPointer(dpy, W_VIEW(tPtr)->window, False, 
 					PointerMotionMask|ButtonPressMask|ButtonReleaseMask,
 					GrabModeAsync, GrabModeAsync, None, 
-					W_VIEW(tPtr)->screen->invisibleCursor, CurrentTime);
+					tPtr->view->screen->invisibleCursor, CurrentTime);
 				tPtr->flags.pointerGrabbed = True;
 				handleTextKeyPress(tPtr, event);
 				
@@ -1327,6 +1383,12 @@ handleActionEvents(XEvent *event, void *data)
 				return;
 			}
 			if (event->xbutton.button == Button1) { 
+
+				if (!tPtr->flags.focused) {
+					WMSetFocusToWidget(tPtr);
+              		tPtr->flags.focused = True;
+				}	
+
 				if (tPtr->flags.ownsSelection) 
 					releaseSelection(tPtr);
 				cursorToTextPosition(tPtr, event->xmotion.x, event->xmotion.y);
@@ -1336,11 +1398,6 @@ handleActionEvents(XEvent *event, void *data)
 					break;
 				}   
 			}
-			if(!tPtr->flags.focused) {
-				WMSetFocusToWidget(tPtr);
-              	tPtr->flags.focused = True;
-				break;
-			} 	

 			if (event->xbutton.button == WINGsConfiguration.mouseWheelDown) 
 				WMScrollText(tPtr, -16);
@@ -1396,13 +1453,24 @@ handleEvents(XEvent *event, void *data)
 		break;

 		case FocusIn: 
-			if (W_FocusedViewOfToplevel(W_TopLevelOfView(tPtr->view))!=tPtr->view)
+			if (W_FocusedViewOfToplevel(W_TopLevelOfView(tPtr->view))
+				!= tPtr->view)
 				return;
 			tPtr->flags.focused = True;
+			if (!tPtr->timerID) {
+				tPtr->timerID = WMAddTimerHandler(12+0*CURSOR_BLINK_ON_DELAY,
+					blinkCursor, tPtr);
+			}
+
 		break;

 		case FocusOut: 
 			tPtr->flags.focused = False;
+			paintText(tPtr);
+			if (tPtr->timerID) {
+				WMDeleteTimerHandler(tPtr->timerID);
+				tPtr->timerID = NULL;
+			}
        break;

 		case DestroyNotify:
@@ -1415,26 +1483,6 @@ handleEvents(XEvent *event, void *data)



-static void
-clearText(Text *tPtr)
-{
-	void *tb;
-	if(!tPtr->firstTextBlock) 
-		return;
-
-	while(tPtr->currentTextBlock) 
-		WMDestroyTextBlock(tPtr, WMRemoveTextBlock(tPtr));
-
-	printf("yadda clearText\n");
-
-	printf("remove the document\n");
-	tPtr->firstTextBlock = NULL;
-	tPtr->currentTextBlock = NULL;
-	tPtr->lastTextBlock = NULL;
-	//WMThawText(tPtr);
-	WMRefreshText(tPtr, 0, 0);
-}
-

 static void
 insertPlainText(WMText *tPtr, char *text) 
@@ -1490,7 +1538,6 @@ WMCreateText(WMWidget *parent)
 #if 0
   printf("sizeof:\n");
    printf(" TextBlock %d\n", sizeof(TextBlock));
-    printf(" TextBlock *%d\n", sizeof(TextBlock *));
    printf(" Section %d\n", sizeof(Section));
    printf(" char * %d\n", sizeof(char *));
    printf(" void * %d\n", sizeof(void *));
@@ -1531,6 +1578,8 @@ WMCreateText(WMWidget *parent)

 	tPtr->view->delegate = &_TextViewDelegate;

+	tPtr->timerID = NULL;
+
 	WMCreateEventHandler(tPtr->view, ExposureMask|StructureNotifyMask
 		|EnterWindowMask|LeaveWindowMask|FocusChangeMask, 
 		handleEvents, tPtr);
@@ -1815,6 +1864,7 @@ WMAppendTextBlock(WMText *tPtr, void *vtb)

 	if (tb->graphic) {
 		WMWidget *w = tb->d.widget;
+return;
 		WMCreateEventHandler(W_VIEW(w), ButtonPressMask,
 			handleWidgetPress, tb);
 		if (W_CLASS(w) != WC_TextField && W_CLASS(w) != WC_Text) {
@@ -1893,9 +1943,13 @@ WMDestroyTextBlock(WMText *tPtr, void *vtb)
 		return;

 	if (tb->graphic) {
-return;
-		WMDestroyWidget(tb->d.widget);
-		wfree(tb->d.widget);
+		/* naturally, there's a danger to destroying 
+		 	widgets whose action brings us here:
+		ie. press a button to destroy it... need to 
+		find a safer way. till then... this stays commented out */
+		//WMDestroyWidget(tb->d.widget);
+		//wfree(tb->d.widget);
+		tb->d.widget = NULL;
 	} else {
 		WMReleaseFont(tb->d.font);
 	}
@@ -2125,4 +2179,39 @@ WMGetTextInsertType(WMText *tPtr)
 }
 	

+void 
+WMSetTextSelectionColor(WMText *tPtr, WMColor *color)
+{
+	TextBlock *tb;
+	if (!tPtr || !color)
+		return;
 	
+	tb = tPtr->firstTextBlock;
+	if (!tb || !tPtr->flags.ownsSelection)
+		return;
+	
+	while(tb) { 
+		tb->color = WMRetainColor(color);
+		tb = tb->next;
+	}
+	WMRefreshText(tPtr, tPtr->vpos, tPtr->hpos);
+}
+
+void 
+WMSetTextSelectionFont(WMText *tPtr, WMFont *font)
+{
+	TextBlock *tb;
+	if (!tPtr || !font)
+		return;
+	
+	tb = tPtr->firstTextBlock;
+	if (!tb || !tPtr->flags.ownsSelection)
+		return;
+	
+	while(tb) { 
+		if (!tb->graphic)
+			tb->d.font = WMRetainFont(font);
+		tb = tb->next;
+	}
+	WMRefreshText(tPtr, tPtr->vpos, tPtr->hpos);
+}