Mercurial > vim
view src/gui_at_sb.c @ 28203:18319c0c36f9 v8.2.4627
patch 8.2.4627: flatten() does not use maxdepth correctly
Commit: https://github.com/vim/vim/commit/acf7d73a7f5cdd63b34de777a4ce5eb3e2ba0ab3
Author: Bram Moolenaar <Bram@vim.org>
Date: Fri Mar 25 19:50:57 2022 +0000
patch 8.2.4627: flatten() does not use maxdepth correctly
Problem: flatten() does not use maxdepth correctly.
Solution: Use a recursive implementation. (closes https://github.com/vim/vim/issues/10020)
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Fri, 25 Mar 2022 21:00:03 +0100 |
parents | 79e10adc821d |
children |
line wrap: on
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/* vi:set ts=8 sts=4 sw=4 noet: */ /* * MODIFIED ATHENA SCROLLBAR (USING ARROWHEADS AT ENDS OF TRAVEL) * Modifications Copyright 1992 by Mitch Trachtenberg * Rights, permissions, and disclaimer of warranty are as in the DEC and MIT * notice below. * $XConsortium: Scrollbar.c,v 1.72 94/04/17 20:12:40 kaleb Exp $ */ /* * Modified for Vim by Bill Foster and Bram Moolenaar */ /* Copyright (c) 1987, 1988, 1994 X Consortium Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of the X Consortium shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from the X Consortium. Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts. All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of Digital not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ // ScrollBar.c // created by weissman, Mon Jul 7 13:20:03 1986 // converted by swick, Thu Aug 27 1987 #include "vim.h" #include <X11/IntrinsicP.h> #include <X11/StringDefs.h> #include <X11/Xaw/XawInit.h> #include "gui_at_sb.h" #include <X11/Xmu/Drawing.h> // Private definitions. static char defaultTranslations[] = "<Btn1Down>: NotifyScroll()\n\ <Btn2Down>: MoveThumb() NotifyThumb()\n\ <Btn3Down>: NotifyScroll()\n\ <Btn4Down>: ScrollOneLineUp()\n\ Shift<Btn4Down>: ScrollPageUp()\n\ <Btn5Down>: ScrollOneLineDown()\n\ Shift<Btn5Down>: ScrollPageDown()\n\ <Btn1Motion>: HandleThumb()\n\ <Btn3Motion>: HandleThumb()\n\ <Btn2Motion>: MoveThumb() NotifyThumb()\n\ <BtnUp>: EndScroll()"; static float floatZero = 0.0; #define Offset(field) XtOffsetOf(ScrollbarRec, field) static XtResource resources[] = { {XtNlength, XtCLength, XtRDimension, sizeof(Dimension), Offset(scrollbar.length), XtRImmediate, (XtPointer) 1}, {XtNthickness, XtCThickness, XtRDimension, sizeof(Dimension), Offset(scrollbar.thickness), XtRImmediate, (XtPointer) 14}, {XtNorientation, XtCOrientation, XtROrientation, sizeof(XtOrientation), Offset(scrollbar.orientation), XtRImmediate, (XtPointer) XtorientVertical}, {XtNscrollProc, XtCCallback, XtRCallback, sizeof(XtPointer), Offset(scrollbar.scrollProc), XtRCallback, NULL}, {XtNthumbProc, XtCCallback, XtRCallback, sizeof(XtPointer), Offset(scrollbar.thumbProc), XtRCallback, NULL}, {XtNjumpProc, XtCCallback, XtRCallback, sizeof(XtPointer), Offset(scrollbar.jumpProc), XtRCallback, NULL}, {XtNthumb, XtCThumb, XtRBitmap, sizeof(Pixmap), Offset(scrollbar.thumb), XtRImmediate, (XtPointer) XtUnspecifiedPixmap}, {XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel), Offset(scrollbar.foreground), XtRString, XtDefaultForeground}, {XtNshown, XtCShown, XtRFloat, sizeof(float), Offset(scrollbar.shown), XtRFloat, (XtPointer)&floatZero}, {XtNtopOfThumb, XtCTopOfThumb, XtRFloat, sizeof(float), Offset(scrollbar.top), XtRFloat, (XtPointer)&floatZero}, {XtNmaxOfThumb, XtCMaxOfThumb, XtRFloat, sizeof(float), Offset(scrollbar.max), XtRFloat, (XtPointer)&floatZero}, {XtNminimumThumb, XtCMinimumThumb, XtRDimension, sizeof(Dimension), Offset(scrollbar.min_thumb), XtRImmediate, (XtPointer) 7}, {XtNshadowWidth, XtCShadowWidth, XtRDimension, sizeof(Dimension), Offset(scrollbar.shadow_width), XtRImmediate, (XtPointer) 1}, {XtNtopShadowPixel, XtCTopShadowPixel, XtRPixel, sizeof(Pixel), Offset(scrollbar.top_shadow_pixel), XtRString, XtDefaultBackground}, {XtNbottomShadowPixel, XtCBottomShadowPixel, XtRPixel, sizeof(Pixel), Offset(scrollbar.bot_shadow_pixel), XtRString, XtDefaultForeground}, {XtNlimitThumb, XtCLimitThumb, XtRBool, sizeof(Bool), Offset(scrollbar.limit_thumb), XtRImmediate, (XtPointer)0} }; #undef Offset static void ClassInitialize(void); static void Initialize(Widget, Widget, ArgList, Cardinal *); static void Destroy(Widget); static void Realize(Widget, Mask *, XSetWindowAttributes *); static void Resize(Widget); static void Redisplay(Widget, XEvent *, Region); static Boolean SetValues(Widget, Widget, Widget, ArgList, Cardinal *); static void HandleThumb(Widget, XEvent *, String *, Cardinal *); static void MoveThumb(Widget, XEvent *, String *, Cardinal *); static void NotifyThumb(Widget, XEvent *, String *, Cardinal *); static void NotifyScroll(Widget, XEvent *, String *, Cardinal *); static void EndScroll(Widget, XEvent *, String *, Cardinal *); static void ScrollOneLineUp(Widget, XEvent *, String *, Cardinal *); static void ScrollOneLineDown(Widget, XEvent *, String *, Cardinal *); static void ScrollPageUp(Widget, XEvent *, String *, Cardinal *); static void ScrollPageDown(Widget, XEvent *, String *, Cardinal *); static void ScrollSome(Widget w, XEvent *event, int call_data); static void _Xaw3dDrawShadows(Widget, XEvent *, Region, int); static void AllocTopShadowGC(Widget); static void AllocBotShadowGC(Widget); static XtActionsRec actions[] = { {"HandleThumb", HandleThumb}, {"MoveThumb", MoveThumb}, {"NotifyThumb", NotifyThumb}, {"NotifyScroll", NotifyScroll}, {"EndScroll", EndScroll}, {"ScrollOneLineUp", ScrollOneLineUp}, {"ScrollOneLineDown", ScrollOneLineDown}, {"ScrollPageUp", ScrollPageUp}, {"ScrollPageDown", ScrollPageDown} }; ScrollbarClassRec vim_scrollbarClassRec = { { // core fields /* superclass */ (WidgetClass) &simpleClassRec, /* class_name */ "Scrollbar", /* size */ sizeof(ScrollbarRec), /* class_initialize */ ClassInitialize, /* class_part_init */ NULL, /* class_inited */ FALSE, /* initialize */ Initialize, /* initialize_hook */ NULL, /* realize */ Realize, /* actions */ actions, /* num_actions */ XtNumber(actions), /* resources */ resources, /* num_resources */ XtNumber(resources), /* xrm_class */ NULLQUARK, /* compress_motion */ TRUE, /* compress_exposure*/ TRUE, /* compress_enterleave*/ TRUE, /* visible_interest */ FALSE, /* destroy */ Destroy, /* resize */ Resize, /* expose */ Redisplay, /* set_values */ SetValues, /* set_values_hook */ NULL, /* set_values_almost */ XtInheritSetValuesAlmost, /* get_values_hook */ NULL, /* accept_focus */ NULL, /* version */ XtVersion, /* callback_private */ NULL, /* tm_table */ defaultTranslations, /* query_geometry */ XtInheritQueryGeometry, /* display_accelerator*/ XtInheritDisplayAccelerator, /* extension */ NULL }, { // simple fields /* change_sensitive */ XtInheritChangeSensitive, #ifndef OLDXAW /* extension */ NULL #endif }, { // scrollbar fields /* empty */ 0 } }; WidgetClass vim_scrollbarWidgetClass = (WidgetClass)&vim_scrollbarClassRec; #define NoButton -1 #define PICKLENGTH(widget, x, y) \ ((widget->scrollbar.orientation == XtorientHorizontal) ? (x) : (y)) #define AT_MIN(x,y) ((x) < (y) ? (x) : (y)) #define AT_MAX(x,y) ((x) > (y) ? (x) : (y)) #define LINE_DELAY 300 #define PAGE_DELAY 300 #define LINE_REPEAT 50 #define PAGE_REPEAT 250 static void ClassInitialize(void) { XawInitializeWidgetSet(); XtAddConverter( XtRString, XtROrientation, XmuCvtStringToOrientation, (XtConvertArgList)NULL, (Cardinal)0 ); } #define MARGIN(sbw) (sbw)->scrollbar.thickness + (sbw)->scrollbar.shadow_width static void FillArea( ScrollbarWidget sbw, Position top, Position bottom, int fill, int draw_shadow) { int tlen = bottom - top; // length of thumb in pixels int sw, margin, floor; int lx, ly, lw, lh; if (bottom <= 0 || bottom <= top) return; sw = sbw->scrollbar.shadow_width; if (sw < 0) sw = 0; margin = MARGIN (sbw); floor = sbw->scrollbar.length - margin + 2; if (sbw->scrollbar.orientation == XtorientHorizontal) { lx = ((top < margin) ? margin : top); ly = sw; lw = (((top + tlen) > floor) ? floor - top : tlen); lh = sbw->core.height - 2 * sw; } else { lx = sw; ly = ((top < margin) ? margin : top); lw = sbw->core.width - 2 * sw; lh = (((top + tlen) > floor) ? floor - top : tlen); } if (lh <= 0 || lw <= 0) return; if (draw_shadow) { if (!(sbw->scrollbar.orientation == XtorientHorizontal)) { // Top border XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.top_shadow_GC, lx, ly, lx + lw - 1, ly); // Bottom border XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.bot_shadow_GC, lx, ly + lh - 1, lx + lw - 1, ly + lh - 1); } else { // Left border XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.top_shadow_GC, lx, ly, lx, ly + lh - 1); // Right border XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.bot_shadow_GC, lx + lw - 1, ly, lx + lw - 1, ly + lh - 1); } return; } if (fill) { XFillRectangle(XtDisplay((Widget) sbw), XtWindow((Widget) sbw), sbw->scrollbar.gc, lx, ly, (unsigned int) lw, (unsigned int) lh); if (!(sbw->scrollbar.orientation == XtorientHorizontal)) { // Left border XDrawLine(XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.top_shadow_GC, lx, ly, lx, ly + lh - 1); // Right border XDrawLine(XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.bot_shadow_GC, lx + lw - 1, ly, lx + lw - 1, ly + lh - 1); } else { // Top border XDrawLine(XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.top_shadow_GC, lx, ly, lx + lw - 1, ly); // Bottom border XDrawLine(XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.bot_shadow_GC, lx, ly + lh - 1, lx + lw - 1, ly + lh - 1); } } else { XClearArea(XtDisplay((Widget) sbw), XtWindow((Widget) sbw), lx, ly, (unsigned int) lw, (unsigned int) lh, FALSE); } } /* * Paint the thumb in the area specified by sbw->top and * sbw->shown. The old area is erased. The painting and * erasing is done cleverly so that no flickering will occur. */ static void PaintThumb(ScrollbarWidget sbw) { Position oldtop, oldbot, newtop, newbot; Dimension margin, tzl; margin = MARGIN (sbw); tzl = sbw->scrollbar.length - 2 * margin; newtop = margin + (int)(tzl * sbw->scrollbar.top); newbot = newtop + (int)(tzl * sbw->scrollbar.shown) + 1; if (newbot < newtop + (int)sbw->scrollbar.min_thumb) newbot = newtop + sbw->scrollbar.min_thumb; oldtop = sbw->scrollbar.topLoc; oldbot = oldtop + sbw->scrollbar.shownLength; sbw->scrollbar.topLoc = newtop; sbw->scrollbar.shownLength = newbot - newtop; if (XtIsRealized ((Widget) sbw)) { if (newtop < oldtop) FillArea(sbw, newtop, AT_MIN(newbot, oldtop+1),1,0); if (newtop > oldtop) FillArea(sbw, oldtop, AT_MIN(newtop, oldbot ),0,0); if (newbot < oldbot) FillArea(sbw, AT_MAX(newbot, oldtop), oldbot, 0,0); if (newbot > oldbot) FillArea(sbw, AT_MAX(newtop, oldbot-1), newbot, 1,0); // Only draw the missing shadows FillArea(sbw, newtop, newbot, 0, 1); } } static void PaintArrows(ScrollbarWidget sbw) { XPoint point[6]; Dimension thickness = sbw->scrollbar.thickness - 1; Dimension size; Dimension off; if (XtIsRealized((Widget) sbw)) { if ((int)thickness * 2 > (int)sbw->scrollbar.length) { size = sbw->scrollbar.length / 2; off = (int)(thickness - size) / 2; } else { size = thickness; off = 0; } point[0].x = off + sbw->scrollbar.shadow_width; point[0].y = size; point[1].x = thickness - off - sbw->scrollbar.shadow_width; point[1].y = size; point[2].x = thickness / 2; point[2].y = sbw->scrollbar.shadow_width; point[3].x = off + sbw->scrollbar.shadow_width; point[3].y = sbw->scrollbar.length - size; point[4].x = thickness - off - sbw->scrollbar.shadow_width; point[4].y = sbw->scrollbar.length - size; point[5].x = thickness / 2; point[5].y = sbw->scrollbar.length - sbw->scrollbar.shadow_width - 1; // horizontal arrows require that x and y coordinates be swapped if (sbw->scrollbar.orientation == XtorientHorizontal) { int n; int swap; for (n = 0; n < 6; n++) { swap = point[n].x; point[n].x = point[n].y; point[n].y = swap; } } // draw the up/left arrow XFillPolygon (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.gc, point, 3, Convex, CoordModeOrigin); XDrawLines (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.bot_shadow_GC, point, 3, CoordModeOrigin); XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.top_shadow_GC, point[0].x, point[0].y, point[2].x, point[2].y); // draw the down/right arrow XFillPolygon (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.gc, point+3, 3, Convex, CoordModeOrigin); XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.top_shadow_GC, point[3].x, point[3].y, point[4].x, point[4].y); XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.top_shadow_GC, point[3].x, point[3].y, point[5].x, point[5].y); XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), sbw->scrollbar.bot_shadow_GC, point[4].x, point[4].y, point[5].x, point[5].y); } } static void Destroy(Widget w) { ScrollbarWidget sbw = (ScrollbarWidget) w; if (sbw->scrollbar.timer_id != (XtIntervalId) 0) XtRemoveTimeOut (sbw->scrollbar.timer_id); XtReleaseGC(w, sbw->scrollbar.gc); XtReleaseGC(w, sbw->scrollbar.top_shadow_GC); XtReleaseGC(w, sbw->scrollbar.bot_shadow_GC); } static void CreateGC(Widget w) { ScrollbarWidget sbw = (ScrollbarWidget) w; XGCValues gcValues; XtGCMask mask; unsigned int depth = 1; if (sbw->scrollbar.thumb == XtUnspecifiedPixmap) { sbw->scrollbar.thumb = XmuCreateStippledPixmap (XtScreen(w), (Pixel) 1, (Pixel) 0, depth); } else if (sbw->scrollbar.thumb != None) { Window root; int x, y; unsigned int width, height, bw; if (XGetGeometry (XtDisplay(w), sbw->scrollbar.thumb, &root, &x, &y, &width, &height, &bw, &depth) == 0) emsg(_("Scrollbar Widget: Could not get geometry of thumb pixmap.")); } gcValues.foreground = sbw->scrollbar.foreground; gcValues.background = sbw->core.background_pixel; mask = GCForeground | GCBackground; if (sbw->scrollbar.thumb != None) { gcValues.fill_style = FillSolid; mask |= GCFillStyle; } // the creation should be non-caching, because // we now set and clear clip masks on the gc returned sbw->scrollbar.gc = XtGetGC (w, mask, &gcValues); } static void SetDimensions(ScrollbarWidget sbw) { if (sbw->scrollbar.orientation == XtorientVertical) { sbw->scrollbar.length = sbw->core.height; sbw->scrollbar.thickness = sbw->core.width; } else { sbw->scrollbar.length = sbw->core.width; sbw->scrollbar.thickness = sbw->core.height; } } static void Initialize( Widget request UNUSED, // what the client asked for Widget new, // what we're going to give him ArgList args UNUSED, Cardinal *num_args UNUSED) { ScrollbarWidget sbw = (ScrollbarWidget) new; CreateGC(new); AllocTopShadowGC(new); AllocBotShadowGC(new); if (sbw->core.width == 0) sbw->core.width = (sbw->scrollbar.orientation == XtorientVertical) ? sbw->scrollbar.thickness : sbw->scrollbar.length; if (sbw->core.height == 0) sbw->core.height = (sbw->scrollbar.orientation == XtorientHorizontal) ? sbw->scrollbar.thickness : sbw->scrollbar.length; SetDimensions(sbw); sbw->scrollbar.scroll_mode = SMODE_NONE; sbw->scrollbar.timer_id = (XtIntervalId)0; sbw->scrollbar.topLoc = 0; sbw->scrollbar.shownLength = sbw->scrollbar.min_thumb; } static void Realize( Widget w, Mask *valueMask, XSetWindowAttributes *attributes) { // The Simple widget actually stuffs the value in the valuemask. (*vim_scrollbarWidgetClass->core_class.superclass->core_class.realize) (w, valueMask, attributes); } static Boolean SetValues( Widget current, // what I am Widget request UNUSED, // what he wants me to be Widget desired, // what I will become ArgList args UNUSED, Cardinal *num_args UNUSED) { ScrollbarWidget sbw = (ScrollbarWidget) current; ScrollbarWidget dsbw = (ScrollbarWidget) desired; Boolean redraw = FALSE; /* * If these values are outside the acceptable range ignore them... */ if (dsbw->scrollbar.top < 0.0 || dsbw->scrollbar.top > 1.0) dsbw->scrollbar.top = sbw->scrollbar.top; if (dsbw->scrollbar.shown < 0.0 || dsbw->scrollbar.shown > 1.0) dsbw->scrollbar.shown = sbw->scrollbar.shown; /* * Change colors and stuff... */ if (XtIsRealized(desired)) { if (sbw->scrollbar.foreground != dsbw->scrollbar.foreground || sbw->core.background_pixel != dsbw->core.background_pixel || sbw->scrollbar.thumb != dsbw->scrollbar.thumb) { XtReleaseGC(desired, sbw->scrollbar.gc); CreateGC (desired); redraw = TRUE; } if (sbw->scrollbar.top != dsbw->scrollbar.top || sbw->scrollbar.shown != dsbw->scrollbar.shown) redraw = TRUE; } return redraw; } static void Resize(Widget w) { // ForgetGravity has taken care of background, but thumb may // have to move as a result of the new size. SetDimensions ((ScrollbarWidget) w); Redisplay(w, (XEvent*) NULL, (Region)NULL); } static void Redisplay(Widget w, XEvent *event, Region region) { ScrollbarWidget sbw = (ScrollbarWidget) w; int x, y; unsigned int width, height; _Xaw3dDrawShadows(w, event, region, FALSE); if (sbw->scrollbar.orientation == XtorientHorizontal) { x = sbw->scrollbar.topLoc; y = 1; width = sbw->scrollbar.shownLength; height = sbw->core.height - 2; } else { x = 1; y = sbw->scrollbar.topLoc; width = sbw->core.width - 2; height = sbw->scrollbar.shownLength; } if (region == NULL || XRectInRegion (region, x, y, width, height) != RectangleOut) { // Forces entire thumb to be painted. sbw->scrollbar.topLoc = -(sbw->scrollbar.length + 1); PaintThumb (sbw); } // we'd like to be region aware here!!!! PaintArrows(sbw); } static Boolean CompareEvents(XEvent *oldEvent, XEvent *newEvent) { #define Check(field) \ do { \ if (newEvent->field != oldEvent->field) \ return False; \ } while (0) Check(xany.display); Check(xany.type); Check(xany.window); switch (newEvent->type) { case MotionNotify: Check(xmotion.state); break; case ButtonPress: case ButtonRelease: Check(xbutton.state); Check(xbutton.button); break; case KeyPress: case KeyRelease: Check(xkey.state); Check(xkey.keycode); break; case EnterNotify: case LeaveNotify: Check(xcrossing.mode); Check(xcrossing.detail); Check(xcrossing.state); break; } #undef Check return True; } struct EventData { XEvent *oldEvent; int count; }; static Bool PeekNotifyEvent(Display *dpy, XEvent *event, char *args) { struct EventData *eventData = (struct EventData*)args; return ((++eventData->count == QLength(dpy)) // since PeekIf blocks || CompareEvents(event, eventData->oldEvent)); } static Boolean LookAhead(Widget w, XEvent *event) { XEvent newEvent; struct EventData eventData; if (QLength (XtDisplay (w)) == 0) return False; eventData.count = 0; eventData.oldEvent = event; XPeekIfEvent (XtDisplay (w), &newEvent, PeekNotifyEvent, (char*)&eventData); return CompareEvents (event, &newEvent); } static void ExtractPosition( XEvent *event, Position *x, // RETURN Position *y, // RETURN unsigned int *state) // RETURN { switch (event->type) { case MotionNotify: *x = event->xmotion.x; *y = event->xmotion.y; if (state != NULL) *state = event->xmotion.state; break; case ButtonPress: case ButtonRelease: *x = event->xbutton.x; *y = event->xbutton.y; if (state != NULL) *state = event->xbutton.state; break; case KeyPress: case KeyRelease: *x = event->xkey.x; *y = event->xkey.y; if (state != NULL) *state = event->xkey.state; break; case EnterNotify: case LeaveNotify: *x = event->xcrossing.x; *y = event->xcrossing.y; if (state != NULL) *state = event->xcrossing.state; break; default: *x = 0; *y = 0; if (state != NULL) *state = 0; } } static void HandleThumb( Widget w, XEvent *event, String *params, Cardinal *num_params) { Position x, y, loc; ScrollbarWidget sbw = (ScrollbarWidget) w; ExtractPosition(event, &x, &y, (unsigned int *)NULL); loc = PICKLENGTH(sbw, x, y); // if the motion event puts the pointer in thumb, call Move and Notify // also call Move and Notify if we're already in continuous scroll mode if (sbw->scrollbar.scroll_mode == SMODE_CONT || (loc >= sbw->scrollbar.topLoc && loc <= sbw->scrollbar.topLoc + (int)sbw->scrollbar.shownLength)) { XtCallActionProc(w, "MoveThumb", event, params, *num_params); XtCallActionProc(w, "NotifyThumb", event, params, *num_params); } } static void RepeatNotify(XtPointer client_data, XtIntervalId *idp UNUSED) { ScrollbarWidget sbw = (ScrollbarWidget) client_data; int call_data; char mode = sbw->scrollbar.scroll_mode; unsigned long rep; if (mode == SMODE_NONE || mode == SMODE_CONT) { sbw->scrollbar.timer_id = (XtIntervalId)0; return; } if (mode == SMODE_LINE_DOWN || mode == SMODE_LINE_UP) { call_data = ONE_LINE_DATA; rep = LINE_REPEAT; } else { call_data = ONE_PAGE_DATA; rep = PAGE_REPEAT; } if (mode == SMODE_PAGE_UP || mode == SMODE_LINE_UP) call_data = -call_data; XtCallCallbacks((Widget)sbw, XtNscrollProc, (XtPointer)(long_u)call_data); sbw->scrollbar.timer_id = XtAppAddTimeOut(XtWidgetToApplicationContext((Widget)sbw), rep, RepeatNotify, client_data); } /* * Same as above, but for floating numbers. */ static float FloatInRange(float num, float small, float big) { return (num < small) ? small : ((num > big) ? big : num); } static void ScrollOneLineUp( Widget w, XEvent *event, String *params UNUSED, Cardinal *num_params UNUSED) { ScrollSome(w, event, -ONE_LINE_DATA); } static void ScrollOneLineDown( Widget w, XEvent *event, String *params UNUSED, Cardinal *num_params UNUSED) { ScrollSome(w, event, ONE_LINE_DATA); } static void ScrollPageDown( Widget w, XEvent *event, String *params UNUSED, Cardinal *num_params UNUSED) { ScrollSome(w, event, ONE_PAGE_DATA); } static void ScrollPageUp( Widget w, XEvent *event, String *params UNUSED, Cardinal *num_params UNUSED) { ScrollSome(w, event, -ONE_PAGE_DATA); } static void ScrollSome( Widget w, XEvent *event, int call_data) { ScrollbarWidget sbw = (ScrollbarWidget) w; if (sbw->scrollbar.scroll_mode == SMODE_CONT) // if scroll continuous return; if (LookAhead(w, event)) return; sbw->scrollbar.scroll_mode = SMODE_LINE_UP; XtCallCallbacks(w, XtNscrollProc, (XtPointer)(long_u)call_data); } static void NotifyScroll( Widget w, XEvent *event, String *params UNUSED, Cardinal *num_params UNUSED) { ScrollbarWidget sbw = (ScrollbarWidget) w; Position x, y, loc; Dimension arrow_size; unsigned long delay = 0; int call_data = 0; unsigned int state; if (sbw->scrollbar.scroll_mode == SMODE_CONT) // if scroll continuous return; if (LookAhead (w, event)) return; ExtractPosition(event, &x, &y, &state); loc = PICKLENGTH(sbw, x, y); if ((int)sbw->scrollbar.thickness * 2 > (int)sbw->scrollbar.length) arrow_size = sbw->scrollbar.length / 2; else arrow_size = sbw->scrollbar.thickness; /* * handle CTRL modifier */ if (state & ControlMask) { if (loc > sbw->scrollbar.topLoc + (Position)sbw->scrollbar.shownLength) call_data = END_PAGE_DATA; else call_data = -END_PAGE_DATA; sbw->scrollbar.scroll_mode = SMODE_NONE; } /* * handle first arrow zone */ else if (loc < (Position)arrow_size) { call_data = -ONE_LINE_DATA; sbw->scrollbar.scroll_mode = SMODE_LINE_UP; delay = LINE_DELAY; } /* * handle last arrow zone */ else if (loc > (Position)(sbw->scrollbar.length - arrow_size)) { call_data = ONE_LINE_DATA; sbw->scrollbar.scroll_mode = SMODE_LINE_DOWN; delay = LINE_DELAY; } /* * handle zone "above" the thumb */ else if (loc < sbw->scrollbar.topLoc) { call_data = -ONE_PAGE_DATA; sbw->scrollbar.scroll_mode = SMODE_PAGE_UP; delay = PAGE_DELAY; } /* * handle zone "below" the thumb */ else if (loc > sbw->scrollbar.topLoc + (Position)sbw->scrollbar.shownLength) { call_data = ONE_PAGE_DATA; sbw->scrollbar.scroll_mode = SMODE_PAGE_DOWN; delay = PAGE_DELAY; } if (call_data) XtCallCallbacks(w, XtNscrollProc, (XtPointer)(long_u)call_data); // establish autoscroll if (delay) sbw->scrollbar.timer_id = XtAppAddTimeOut(XtWidgetToApplicationContext(w), delay, RepeatNotify, (XtPointer)w); } static void EndScroll( Widget w, XEvent *event UNUSED, String *params UNUSED, Cardinal *num_params UNUSED) { ScrollbarWidget sbw = (ScrollbarWidget) w; sbw->scrollbar.scroll_mode = SMODE_NONE; // no need to remove any autoscroll timeout; it will no-op // because the scroll_mode is SMODE_NONE // but be sure to remove timeout in destroy proc } static float FractionLoc(ScrollbarWidget sbw, int x, int y) { int margin; float height, width; margin = MARGIN(sbw); x -= margin; y -= margin; height = (float)sbw->core.height - 2 * margin; width = (float)sbw->core.width - 2 * margin; return PICKLENGTH(sbw, x / width, y / height); } static void MoveThumb( Widget w, XEvent *event, String *params UNUSED, Cardinal *num_params UNUSED) { ScrollbarWidget sbw = (ScrollbarWidget)w; Position x, y; float top; char old_mode = sbw->scrollbar.scroll_mode; sbw->scrollbar.scroll_mode = SMODE_CONT; // indicate continuous scroll if (LookAhead(w, event)) return; if (!event->xmotion.same_screen) return; ExtractPosition(event, &x, &y, (unsigned int *)NULL); top = FractionLoc(sbw, x, y); if (old_mode != SMODE_CONT) // start dragging: set offset { if (event->xbutton.button == Button2) sbw->scrollbar.scroll_off = sbw->scrollbar.shown / 2.; else sbw->scrollbar.scroll_off = top - sbw->scrollbar.top; } top -= sbw->scrollbar.scroll_off; if (sbw->scrollbar.limit_thumb) top = FloatInRange(top, 0.0, sbw->scrollbar.max - sbw->scrollbar.shown + 0.000001); else top = FloatInRange(top, 0.0, sbw->scrollbar.max); sbw->scrollbar.top = top; PaintThumb(sbw); XFlush(XtDisplay(w)); // re-draw it before Notifying } static void NotifyThumb( Widget w, XEvent *event, String *params UNUSED, Cardinal *num_params UNUSED) { ScrollbarWidget sbw = (ScrollbarWidget)w; // Use a union to avoid a warning for the weird conversion from float to // XtPointer. Comes from Xaw/Scrollbar.c. union { XtPointer xtp; float xtf; } xtpf; if (LookAhead(w, event)) return; // thumbProc is not pretty, but is necessary for backwards // compatibility on those architectures for which it work{s,ed}; // the intent is to pass a (truncated) float by value. xtpf.xtf = sbw->scrollbar.top; XtCallCallbacks(w, XtNthumbProc, xtpf.xtp); XtCallCallbacks(w, XtNjumpProc, (XtPointer)&sbw->scrollbar.top); } static void AllocTopShadowGC(Widget w) { ScrollbarWidget sbw = (ScrollbarWidget) w; XtGCMask valuemask; XGCValues myXGCV; valuemask = GCForeground; myXGCV.foreground = sbw->scrollbar.top_shadow_pixel; sbw->scrollbar.top_shadow_GC = XtGetGC(w, valuemask, &myXGCV); } static void AllocBotShadowGC(Widget w) { ScrollbarWidget sbw = (ScrollbarWidget) w; XtGCMask valuemask; XGCValues myXGCV; valuemask = GCForeground; myXGCV.foreground = sbw->scrollbar.bot_shadow_pixel; sbw->scrollbar.bot_shadow_GC = XtGetGC(w, valuemask, &myXGCV); } static void _Xaw3dDrawShadows( Widget gw, XEvent *event UNUSED, Region region, int out) { XPoint pt[6]; ScrollbarWidget sbw = (ScrollbarWidget) gw; Dimension s = sbw->scrollbar.shadow_width; /* * draw the shadows using the core part width and height, * and the scrollbar part shadow_width. * * no point to do anything if the shadow_width is 0 or the * widget has not been realized. */ if (s > 0 && XtIsRealized(gw)) { Dimension h = sbw->core.height; Dimension w = sbw->core.width; Dimension wms = w - s; Dimension hms = h - s; Display *dpy = XtDisplay (gw); Window win = XtWindow (gw); GC top, bot; if (out) { top = sbw->scrollbar.top_shadow_GC; bot = sbw->scrollbar.bot_shadow_GC; } else { top = sbw->scrollbar.bot_shadow_GC; bot = sbw->scrollbar.top_shadow_GC; } // top-left shadow if ((region == NULL) || (XRectInRegion (region, 0, 0, w, s) != RectangleOut) || (XRectInRegion (region, 0, 0, s, h) != RectangleOut)) { pt[0].x = 0; pt[0].y = h; pt[1].x = pt[1].y = 0; pt[2].x = w; pt[2].y = 0; pt[3].x = wms; pt[3].y = s; pt[4].x = pt[4].y = s; pt[5].x = s; pt[5].y = hms; XFillPolygon (dpy, win, top, pt, 6, Complex, CoordModeOrigin); } // bottom-right shadow if ((region == NULL) || (XRectInRegion (region, 0, hms, w, s) != RectangleOut) || (XRectInRegion (region, wms, 0, s, h) != RectangleOut)) { pt[0].x = 0; pt[0].y = h; pt[1].x = w; pt[1].y = h; pt[2].x = w; pt[2].y = 0; pt[3].x = wms; pt[3].y = s; pt[4].x = wms; pt[4].y = hms; pt[5].x = s; pt[5].y = hms; XFillPolygon (dpy, win, bot, pt, 6, Complex, CoordModeOrigin); } } } /* * Set the scroll bar to the given location. */ void vim_XawScrollbarSetThumb(Widget w, double top, double shown, double max) { ScrollbarWidget sbw = (ScrollbarWidget) w; if (sbw->scrollbar.scroll_mode == SMODE_CONT) // if still thumbing return; sbw->scrollbar.max = (max > 1.0) ? 1.0 : (max >= 0.0) ? max : sbw->scrollbar.max; sbw->scrollbar.top = (top > sbw->scrollbar.max) ? sbw->scrollbar.max : (top >= 0.0) ? top : sbw->scrollbar.top; sbw->scrollbar.shown = (shown > 1.0) ? 1.0 : (shown >= 0.0) ? shown : sbw->scrollbar.shown; PaintThumb(sbw); }