/* Tabs Widget for XEmacs.
Copyright (C) 1999 Edward A. Falk
This file is part of XEmacs.
XEmacs 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 3 of the License, or (at your
option) any later version.
XEmacs 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 XEmacs. If not, see . */
/*
* Tabs.c - Index Tabs composite widget
*
* Author: Edward A. Falk
* falk@falconer.vip.best.com
*
* Date: July 29, 1997
*
*
* Overall layout of this widget is as follows:
*
* ________ ,---------. _________
* | label || Label || Label | \ tabs
* |________|| ||_________| /
* |+----------------------------+| \
* || || |
* || child widget window || > frame
* |+----------------------------+| |
* +------------------------------+ /
*
* The height of the tabs includes the shadow width, top and bottom
* margins, and the height of the text.
*
* The height of the frame includes the top and bottom shadow width and the
* size of the child widget window.
*
* The tabs overlap the frame and each other vertically by the shadow
* width, so that when the topmost tab is drawn, it obliterates part of
* the frame.
*/
/* Synched up with: Tabs.c 1.27.
This file contains essential XEmacs-related fixes to the original
version of the Tabs widget. Be VERY careful about syncing if you ever
update to a more recent version. In general this is probably now a
bad idea.
#### We need to check that various windows (the whole widget, or a single
tab) are of "reasonable" size, ie, we need to try for more sanity in the
geometry management routines.
*/
/*
* TODO: min child height = tab height
*/
#include
#include
#include
#include
#include
#include
#include
/* #### This may be risky, lwlib-internal.h redefines abort() */
#include "lwlib-fonts.h"
#include "lwlib-colors.h"
#include "lwlib-internal.h"
#include "xlwtabsP.h"
#include "xlwgcs.h"
#define XFT_USE_HEIGHT_NOT_ASCENT_DESCENT 0
/* #### These should probably be resources. */
#define MIN_WID 10
#define MIN_HGT 10
#define INDENT 3 /* tabs indented from edge by this much */
#define SPACING 0 /* distance between tabs */
#define SHADWID 1 /* default shadow width */
#define TABDELTA 2 /* top tab grows this many pixels */
#define TABLDELTA 2 /* top tab label offset this many pixels */
/****************************************************************
*
* IndexTabs Resources
*
****************************************************************/
static char defaultTranslations[] = "\
: select() \n\
: highlight() \n\
: unhighlight() \n\
Page_Up: page(up) \n\
KP_Page_Up: page(up) \n\
Prior: page(up) \n\
KP_Prior: page(up) \n\
Page_Down: page(down) \n\
KP_Page_Down: page(down) \n\
Next: page(down) \n\
KP_Next: page(down) \n\
Home: page(home) \n\
KP_Home: page(home) \n\
End: page(end) \n\
KP_End: page(end) \n\
Up: highlight(up) \n\
KP_Up: highlight(up) \n\
Down: highlight(down) \n\
KP_Down: highlight(down) \n\
: page(select) \n\
" ;
static char accelTable[] = " #augment\n\
Page_Up: page(up) \n\
KP_Page_Up: page(up) \n\
Prior: page(up) \n\
KP_Prior: page(up) \n\
Page_Down: page(down) \n\
KP_Page_Down: page(down) \n\
Next: page(down) \n\
KP_Next: page(down) \n\
Home: page(home) \n\
KP_Home: page(home) \n\
End: page(end) \n\
KP_End: page(end) \n\
Up: highlight(up) \n\
KP_Up: highlight(up) \n\
Down: highlight(down) \n\
KP_Down: highlight(down) \n\
: page(select) \n\
" ;
static XtAccelerators defaultAccelerators ; /* #### Never used */
static XtResource resources[] = {
#define offset(field) XtOffsetOf(TabsRec, tabs.field)
#define res(name,_class,intrepr,type,member,extrepr,value) \
Xt_RESOURCE (name, _class, intrepr, type, offset(member), extrepr, value)
res (XtNselectInsensitive, XtCSelectInsensitive, XtRBoolean, Boolean,
selectInsensitive, XtRImmediate, True),
res (XtNfont, XtCFont, XtRFontStruct, XFontStruct *,
font, XtRString, XtDefaultFont),
#ifdef HAVE_XFT_TABS
/* #### Maybe use "-*-helvetica-bold-r-*-*-*-120-*-*-*-*-iso8859-1" here?
or XtDefaultFont? */
res (XtNfcFontName, XtCFcFontName, XtRString, String,
fcFontName, XtRString, NULL),
/* #### This needs to be fixed to give a proper type and converter for
XftFonts. See also xlwmenu.c. */
res (XtNxftFont, XtCXftFont, XtRString, String,
xftFontName, XtRString, "Helvetica-12"),
#endif
res (XtNinternalWidth, XtCWidth, XtRDimension, Dimension,
internalWidth, XtRImmediate, 4),
res (XtNinternalHeight, XtCHeight, XtRDimension, Dimension,
internalHeight, XtRImmediate, 4),
Xt_RESOURCE (XtNborderWidth, XtCBorderWidth, XtRDimension, Dimension,
XtOffsetOf(RectObjRec,rectangle.border_width), XtRImmediate, 0),
res (XtNtopWidget, XtCTopWidget, XtRWidget, Widget,
topWidget, XtRImmediate, NULL),
res (XtNcallback, XtCCallback, XtRCallback, XtPointer,
callbacks, XtRCallback, NULL),
res (XtNpopdownCallback, XtCCallback, XtRCallback, XtPointer,
popdownCallbacks, XtRCallback, NULL),
res (XtNbeNiceToColormap, XtCBeNiceToColormap, XtRBoolean, Boolean,
be_nice_to_cmap, XtRImmediate, True),
res (XtNtopShadowContrast, XtCTopShadowContrast, XtRInt, int,
top_shadow_contrast, XtRImmediate, 20),
res (XtNbottomShadowContrast, XtCBottomShadowContrast, XtRInt, int,
bot_shadow_contrast, XtRImmediate, 40),
res (XtNinsensitiveContrast, XtCInsensitiveContrast, XtRInt, int,
insensitive_contrast, XtRImmediate, 33),
Xt_RESOURCE (XtNaccelerators, XtCAccelerators, XtRAcceleratorTable,
XtTranslations, XtOffsetOf(TabsRec,core.accelerators),
XtRString, accelTable),
#undef offset
#undef res
};
/* constraint resources */
static XtResource tabsConstraintResources[] = {
#define offset(field) XtOffsetOf(TabsConstraintsRec, tabs.field)
#define res(name,_class,intrepr,type,member,extrepr,value) \
Xt_RESOURCE (name, _class, intrepr, type, offset(member), extrepr, value)
res (XtNtabLabel, XtCLabel, XtRString, String, label, XtRString, NULL),
res (XtNtabLeftBitmap, XtCLeftBitmap, XtRBitmap, Pixmap, left_bitmap,
XtRImmediate, None),
res (XtNtabForeground, XtCForeground, XtRPixel, Pixel, foreground,
XtRString, XtDefaultForeground),
res (XtNresizable, XtCResizable, XtRBoolean, Boolean, resizable,
XtRImmediate, True),
#undef offset
#undef res
} ;
#if !NeedFunctionPrototypes
/* FORWARD REFERENCES: */
/* member functions */
static void TabsClassInit();
static void TabsInit();
static void TabsResize();
static void TabsExpose();
static void TabsDestroy();
static void TabsRealize();
static Boolean TabsSetValues();
static Boolean TabsAcceptFocus();
static XtGeometryResult TabsQueryGeometry();
static XtGeometryResult TabsGeometryManager();
static void TabsChangeManaged();
static void TabsConstraintInitialize() ;
static Boolean TabsConstraintSetValues() ;
/* action procs */
static void TabsSelect() ;
static void TabsPage() ;
static void TabsHighlight() ;
static void TabsUnhighlight() ;
/* internal privates */
static void TabsAllocGCs() ; /* get rendering GCs */
static void TabsFreeGCs() ; /* return rendering GCs */
static void DrawTabs() ; /* draw all tabs */
static void DrawTab() ; /* draw one index tab */
static void DrawFrame() ; /* draw frame around contents */
static void DrawTrim() ; /* draw trim around a tab */
static void DrawBorder() ; /* draw border */
static void DrawHighlight() ; /* draw highlight */
static void UndrawTab() ; /* undraw interior of a tab */
static void TabWidth() ; /* recompute tab size */
static void GetPreferredSizes() ; /* query all children for their sizes */
static void MaxChild() ; /* find max preferred child size */
static int PreferredSize() ; /* compute preferred size */
static int PreferredSize2() ; /* compute preferred size */
static int PreferredSize3() ; /* compute preferred size */
static void MakeSizeRequest() ; /* try to change size */
static void getBitmapInfo() ;
static int TabLayout() ; /* lay out tabs */
static void TabsShuffleRows() ; /* bring current tab to bottom row */
static void TabsAllocFgGC() ;
static void TabsAllocGreyGC() ;
#else
static void TabsClassInit(void) ;
static void TabsInit( Widget req, Widget new_, ArgList, Cardinal *nargs) ;
static void TabsConstraintInitialize(Widget, Widget, ArgList, Cardinal *) ;
static void TabsRealize(Widget, Mask *, XSetWindowAttributes *) ;
static void TabsDestroy( Widget w) ;
static void TabsResize( Widget w) ;
static void TabsExpose( Widget w, XEvent *event, Region region) ;
static Boolean TabsSetValues(Widget, Widget, Widget, ArgList, Cardinal *) ;
static Boolean TabsAcceptFocus(Widget, Time *);
static Boolean TabsConstraintSetValues(Widget, Widget, Widget,
ArgList, Cardinal *) ;
static XtGeometryResult TabsQueryGeometry(Widget,
XtWidgetGeometry *, XtWidgetGeometry *) ;
static XtGeometryResult TabsGeometryManager(Widget,
XtWidgetGeometry *, XtWidgetGeometry *) ;
static void TabsChangeManaged( Widget w) ;
static void TabsSelect(Widget, XEvent *, String *, Cardinal *) ;
static void TabsPage(Widget, XEvent *, String *, Cardinal *) ;
static void TabsHighlight(Widget, XEvent *, String *, Cardinal *) ;
static void TabsUnhighlight(Widget, XEvent *, String *, Cardinal *) ;
static void DrawTabs( TabsWidget tw, Bool labels) ;
static void DrawTab( TabsWidget tw, Widget child, Bool labels) ;
static void DrawFrame( TabsWidget tw) ;
static void DrawTrim( TabsWidget, int x, int y,
int wid, int hgt, Bool bottom, Bool undraw) ;
static void DrawBorder( TabsWidget tw, Widget child, Bool undraw) ;
static void DrawHighlight( TabsWidget tw, Widget child, Bool undraw) ;
static void UndrawTab( TabsWidget tw, Widget child) ;
static void TabWidth( Widget w) ;
static int TabLayout( TabsWidget, Dimension wid, Dimension hgt, Dimension *r_hgt,
Bool query_only) ;
static void GetPreferredSizes(TabsWidget) ;
static void MaxChild(TabsWidget, Widget except, Dimension, Dimension) ;
static void TabsShuffleRows( TabsWidget tw) ;
static int PreferredSize( TabsWidget,
Dimension *reply_width, Dimension *reply_height,
Dimension *reply_cw, Dimension *reply_ch) ;
static int PreferredSize2( TabsWidget, Dimension cw, Dimension ch,
Dimension *rw, Dimension *rh) ;
static int PreferredSize3( TabsWidget, Dimension wid, Dimension hgt,
Dimension *rw, Dimension *rh) ;
static void MakeSizeRequest(TabsWidget) ;
static void TabsAllocGCs(TabsWidget) ;
static void TabsFreeGCs(TabsWidget) ;
static void getBitmapInfo( TabsWidget tw, TabsConstraints tab) ;
static void TabsAllocFgGC( TabsWidget tw) ;
static void TabsAllocGreyGC( TabsWidget tw) ;
#endif
#define AddRect(i,xx,yy,w,h) \
do{rects[(i)].x=(xx); rects[i].y=(yy); \
rects[i].width=(w); rects[i].height=(h);}while(0)
static XtActionsRec actionsList[] =
{
{ (String) "select", TabsSelect },
{ (String) "page", TabsPage },
{ (String) "highlight", TabsHighlight },
{ (String) "unhighlight", TabsUnhighlight },
} ;
/****************************************************************
*
* Full class record constant
*
****************************************************************/
#ifndef NEED_MOTIF
#define SuperClass (&constraintClassRec)
#else
#define SuperClass (&xmManagerClassRec)
#endif
TabsClassRec tabsClassRec = {
{
/* core_class fields */
/* superclass */ (WidgetClass) SuperClass,
/* class_name */ (String) "Tabs",
/* widget_size */ sizeof(TabsRec),
/* class_initialize */ TabsClassInit,
/* class_part_init */ NULL, /* TODO? */
/* class_inited */ FALSE,
/* initialize */ TabsInit,
/* initialize_hook */ NULL,
/* realize */ TabsRealize,
/* actions */ actionsList,
/* num_actions */ XtNumber(actionsList),
/* resources */ resources,
/* num_resources */ XtNumber(resources),
/* xrm_class */ NULLQUARK,
/* compress_motion */ TRUE,
#if XtSpecificationRelease < 6
/* compress_exposure */ XtExposeCompressMaximal,
#else
/* compress_exposure */ XtExposeCompressMaximal|XtExposeNoRegion,
#endif
/* compress_enterleave*/ TRUE,
/* visible_interest */ TRUE,
/* destroy */ TabsDestroy,
/* resize */ TabsResize,
/* expose */ TabsExpose,
/* set_values */ TabsSetValues,
/* set_values_hook */ NULL,
/* set_values_almost */ XtInheritSetValuesAlmost,
/* get_values_hook */ NULL,
/* accept_focus */ TabsAcceptFocus,
/* version */ XtVersion,
/* callback_private */ NULL,
/* tm_table */ defaultTranslations,
/* query_geometry */ TabsQueryGeometry,
/* display_accelerator*/ XtInheritDisplayAccelerator,
/* extension */ NULL
},
{
/* composite_class fields */
/* geometry_manager */ TabsGeometryManager,
/* change_managed */ TabsChangeManaged,
/* insert_child */ XtInheritInsertChild, /* TODO? */
/* delete_child */ XtInheritDeleteChild, /* TODO? */
/* extension */ NULL
},
{
/* constraint_class fields */
/* subresources */ tabsConstraintResources,
/* subresource_count */ XtNumber(tabsConstraintResources),
/* constraint_size */ sizeof(TabsConstraintsRec),
/* initialize */ TabsConstraintInitialize,
/* destroy */ NULL,
/* set_values */ TabsConstraintSetValues,
/* extension */ NULL,
},
#ifdef NEED_MOTIF
/* Manager Class fields */
{
/* translations */ NULL,
/* syn_resources */ NULL,
/* num_syn_resources */ 0,
/* syn_constraint_resources */ NULL,
/* num_syn_constraint_resources */ 0,
/* parent_process */ XmInheritParentProcess,
/* extension */ NULL
},
#endif
{
/* Tabs class fields */
/* extension */ NULL,
}
};
WidgetClass tabsWidgetClass = (WidgetClass)&tabsClassRec;
#define TabsNumChildren(tw) (((TabsWidget)tw)->composite.num_children)
#define TabVisible(tab) \
(XtIsManaged(tab) && \
((TabsConstraints)((tab)->core.constraints))->tabs.visible)
static int debug_tabs = 0; /* increase for more verbosity */
#ifdef HAVE_XFT_TABS
/* #### duplicated from xlwmenu.c -- CLEAN THIS SHIT UP!
Undeclared so define at top. */
#define MINL(x,y) ((((unsigned long) (x)) < ((unsigned long) (y))) \
? ((unsigned long) (x)) : ((unsigned long) (y)))
static int
x_xft_text_width (Display *dpy, XftFont *xft_font, FcChar8 *run, int len)
{
static XGlyphInfo glyphinfo; /* #### static? */
XftTextExtents8 (dpy,
xft_font,
run, len, &glyphinfo);
return glyphinfo.xOff;
}
#endif
/****************************************************************
*
* Member Procedures
*
****************************************************************/
static void
TabsClassInit(void)
{
defaultAccelerators = XtParseAcceleratorTable(accelTable) ;
/* TODO: register converter for labels? */
}
/* Init a newly created tabs widget. Compute height of tabs
* and optionally compute size of widget. */
/* ARGSUSED */
static void
TabsInit(Widget request, Widget new_, ArgList UNUSED (args),
Cardinal *UNUSED (num_args))
{
TabsWidget newTw = (TabsWidget)new_;
newTw->tabs.numRows = 0 ;
newTw->tabs.realRows = 0;
GetPreferredSizes(newTw) ;
/* height is easy, it's the same for all tabs:
* TODO: font height + height of tallest bitmap.
*/
newTw->tabs.tab_height = 2 * newTw->tabs.internalHeight + SHADWID ;
#ifdef HAVE_XFT_TABS
/* #### kludge for name change */
if (!newTw->tabs.fcFontName)
newTw->tabs.fcFontName = newTw->tabs.xftFontName;
/* must get font here
#### to do this right, we should add a new Xt Resource type +
conversion function */
newTw->tabs.renderFont =
xft_open_font_by_name (XtDisplay ((Widget) newTw),
newTw->tabs.fcFontName);
if (newTw->tabs.renderFont != NULL)
#if XFT_USE_HEIGHT_NOT_ASCENT_DESCENT
newTw->tabs.tab_height += newTw->tabs.renderFont->height;
#else
newTw->tabs.tab_height += newTw->tabs.renderFont->ascent +
newTw->tabs.renderFont->descent;
#endif /* XFT_USE_HEIGHT_NOT_ASCENT_DESCENT */
#else /* ! HAVE_XFT_TABS */
if (newTw->tabs.font != NULL)
newTw->tabs.tab_height += newTw->tabs.font->max_bounds.ascent +
newTw->tabs.font->max_bounds.descent;
#endif /* ! HAVE_XFT_TABS */
/* if size not explicitly set, set it to our preferred size now. */
if( request->core.width == 0 || request->core.height == 0 )
{
Dimension w,h ;
PreferredSize(newTw, &w, &h, NULL,NULL) ;
if( request->core.width == 0 ) new_->core.width = w ;
if( request->core.height == 0 ) new_->core.height = h ;
XtClass(new_)->core_class.resize(new_) ;
}
/* defer GC allocation, etc., until Realize() time. */
newTw->tabs.foregroundGC =
newTw->tabs.backgroundGC =
newTw->tabs.greyGC =
newTw->tabs.topGC =
newTw->tabs.botGC = None ;
newTw->tabs.grey50 = None ;
newTw->tabs.needs_layout = False ;
newTw->tabs.hilight = NULL ;
#ifdef NEED_MOTIF
newTw->manager.navigation_type = XmTAB_GROUP ;
newTw->manager.traversal_on = True ;
#endif
}
/* Init the constraint part of a new tab child. Compute the
* size of the tab.
*/
/* ARGSUSED */
static void
TabsConstraintInitialize(Widget UNUSED (request), Widget new_,
ArgList UNUSED (args), Cardinal *UNUSED (num_args))
{
TabsConstraints tab = (TabsConstraints) new_->core.constraints ;
tab->tabs.greyAlloc = False ; /* defer allocation of pixel */
tab->tabs.visible = False ;
getBitmapInfo((TabsWidget)XtParent(new_), tab) ;
TabWidth(new_) ;
}
/* Called when tabs widget first realized. Create the window
* and allocate the GCs
*/
static void
TabsRealize(Widget w, Mask *valueMask, XSetWindowAttributes *attributes)
{
TabsWidget tw = (TabsWidget) w;
attributes->bit_gravity = NorthWestGravity;
*valueMask |= CWBitGravity;
SuperClass->core_class.realize(w, valueMask, attributes);
TabsAllocGCs(tw) ;
}
static void
TabsDestroy(Widget w)
{
TabsWidget tw = (TabsWidget) w;
#ifdef HAVE_XFT_TABS
XftFontClose (XtDisplay (w), tw->tabs.renderFont);
#endif /* ! HAVE_XFT_TABS */
TabsFreeGCs (tw) ;
}
/* Parent has resized us. This will require that the tabs be
* laid out again.
*/
static void
TabsResize(Widget w)
{
TabsWidget tw = (TabsWidget) w;
int i ;
int num_children = tw->composite.num_children ;
Widget *childP ;
/* TabsConstraints tab ; */ /* #### unused */
Dimension cw,ch,bw ;
/* Our size has now been dictated by the parent. Lay out the
* tabs, lay out the frame, lay out the children. Remember
* that the tabs overlap each other and the frame by shadowWidth.
* Also, the top tab is larger than the others, so if there's only
* one row, the widget must be made taller to accommodate this.
*
* Once the tabs are laid out, if there is more than one
* row, we may need to shuffle the rows to bring the top tab
* to the bottom row.
*/
tw->tabs.needs_layout = False ;
if( num_children > 0 && tw->composite.children != NULL )
{
/* Loop through the tabs and assign rows & x positions */
(void) TabLayout(tw, tw->core.width, tw->core.height, NULL, False) ;
num_children = TabsNumChildren (tw);
/* assign a top widget, bring it to bottom row. */
TabsShuffleRows(tw) ;
/* now assign child positions & sizes. Positions are all the
* same: just inside the frame. Sizes are also all the same.
*/
tw->tabs.child_width = cw = tw->core.width - 2 * SHADWID ;
tw->tabs.child_height = ch =
tw->core.height < (tw->tabs.tab_total + 2 * SHADWID) ? 0 :
tw->core.height - tw->tabs.tab_total - 2 * SHADWID ;
for(i=0, childP=tw->composite.children;
i < num_children;
++i, ++childP)
if( XtIsManaged(*childP) )
{
/* tab = (TabsConstraints) (*childP)->core.constraints ; */
bw = (*childP)->core.border_width ;
/* Don't do anything if we can't see any of the child. */
if (ch >= bw*2 && ch > 0 && cw >= bw*2 && cw > 0)
XtConfigureWidget(*childP, SHADWID,tw->tabs.tab_total+SHADWID,
cw-bw*2,ch-bw*2, bw) ;
}
if( XtIsRealized(w) ) {
XClearWindow(XtDisplay((Widget)tw), XtWindow((Widget)tw)) ;
/* should not be necessary to explicitly repaint after a
* resize, but XEmacs folks tell me it is.
*/
XtClass(tw)->core_class.expose((Widget)tw,NULL,None) ;
}
}
} /* Resize */
/* Redraw entire Tabs widget */
/* ARGSUSED */
static void
TabsExpose(Widget w, XEvent *UNUSED (event), Region UNUSED (region))
{
TabsWidget tw = (TabsWidget) w;
if( tw->tabs.needs_layout )
XtClass(w)->core_class.resize(w) ;
DrawTabs(tw, True) ;
}
/* Called when any Tabs widget resources are changed. */
/* ARGSUSED */
static Boolean
TabsSetValues(Widget current, Widget UNUSED (request), Widget new_,
ArgList UNUSED (args), Cardinal *UNUSED (num_args))
{
TabsWidget curtw = (TabsWidget) current ;
TabsWidget tw = (TabsWidget) new_ ;
Boolean needRedraw = False ;
Widget *childP ;
int i ;
if(
#ifdef HAVE_XFT_TABS
tw->tabs.renderFont != curtw->tabs.renderFont ||
#else
tw->tabs.font != curtw->tabs.font ||
#endif
tw->tabs.internalWidth != curtw->tabs.internalWidth ||
tw->tabs.internalHeight != curtw->tabs.internalHeight)
{
tw->tabs.tab_height = 2 * tw->tabs.internalHeight + SHADWID;
#ifdef HAVE_XFT_TABS
if (tw->tabs.renderFont != NULL)
#if XFT_USE_HEIGHT_NOT_ASCENT_DESCENT
tw->tabs.tab_height += tw->tabs.renderFont->height;
#else
tw->tabs.tab_height += tw->tabs.renderFont->ascent +
tw->tabs.renderFont->descent;
#endif /* XFT_USE_HEIGHT_NOT_ASCENT_DESCENT */
#else /* ! HAVE_XFT_TABS */
if (tw->tabs.font != NULL)
tw->tabs.tab_height += tw->tabs.font->max_bounds.ascent +
tw->tabs.font->max_bounds.descent;
#endif /* ! HAVE_XFT_TABS */
/* Tab size has changed. Resize all tabs and request a new size */
for(i=0, childP=tw->composite.children;
i < (int) tw->composite.num_children;
++i, ++childP)
if( XtIsManaged(*childP) )
TabWidth(*childP) ;
PreferredSize(tw, &tw->core.width, &tw->core.height, NULL,NULL) ;
needRedraw = True ;
tw->tabs.needs_layout = True ;
}
/* TODO: if any color changes, need to recompute GCs and redraw */
if( tw->core.background_pixel != curtw->core.background_pixel ||
tw->core.background_pixmap != curtw->core.background_pixmap ||
#ifdef HAVE_XFT_TABS
tw->tabs.renderFont != curtw->tabs.renderFont
#else
tw->tabs.font != curtw->tabs.font
#endif
)
if( XtIsRealized(new_) )
{
TabsFreeGCs(tw) ;
TabsAllocGCs(tw) ;
needRedraw = True ;
}
if( tw->core.sensitive != curtw->core.sensitive )
needRedraw = True ;
/* If top widget changes, need to change stacking order, redraw tabs.
* Window system will handle the redraws.
*/
if( tw->tabs.topWidget != curtw->tabs.topWidget )
{
if( XtIsRealized(tw->tabs.topWidget) )
{
Widget w = tw->tabs.topWidget ;
TabsConstraints tab = (TabsConstraints) w->core.constraints ;
XRaiseWindow(XtDisplay(w), XtWindow(w)) ;
#ifdef NEED_MOTIF
XtVaSetValues(curtw->tabs.topWidget, XmNtraversalOn, False, 0) ;
XtVaSetValues(w, XmNtraversalOn, True, 0) ;
#endif
if( tab->tabs.row != (int) tw->tabs.numRows-1 )
TabsShuffleRows(tw) ;
needRedraw = True ;
}
else
tw->tabs.needs_layout = True ;
}
return needRedraw ;
}
/* Called when any child constraint resources change. */
/* ARGSUSED */
static Boolean
TabsConstraintSetValues(Widget current, Widget UNUSED (request), Widget new_,
ArgList UNUSED (args), Cardinal *UNUSED (num_args))
{
TabsWidget tw = (TabsWidget) XtParent(new_) ;
TabsConstraints ctab = (TabsConstraints) current->core.constraints ;
TabsConstraints tab = (TabsConstraints) new_->core.constraints ;
/* if label changes, need to re-layout the entire widget */
/* if foreground changes, need to redraw tab label */
/* TODO: only need resize of new bitmap has different dimensions
* from old bitmap.
*/
if( tab->tabs.label != ctab->tabs.label || /* Tab size has changed. */
tab->tabs.left_bitmap != ctab->tabs.left_bitmap )
{
TabWidth(new_) ;
tw->tabs.needs_layout = True ;
if( tab->tabs.left_bitmap != ctab->tabs.left_bitmap )
getBitmapInfo(tw, tab) ;
/* If there are no subclass ConstraintSetValues procedures remaining
* to be invoked, and if the preferred size has changed, ask
* for a resize.
*/
if( XtClass((Widget)tw) == tabsWidgetClass )
MakeSizeRequest(tw) ;
}
/* The child widget itself never needs a redisplay, but the parent
* Tabs widget might.
*/
if( XtIsRealized(new_) )
{
if( tw->tabs.needs_layout ) {
XClearWindow(XtDisplay((Widget)tw), XtWindow((Widget)tw)) ;
XtClass(tw)->core_class.expose((Widget)tw,NULL,None) ;
}
else if( tab->tabs.foreground != ctab->tabs.foreground )
DrawTab(tw, new_, True) ;
}
return False ;
}
static Boolean
TabsAcceptFocus(Widget w, Time *UNUSED (t))
{
if( !w->core.being_destroyed && XtIsRealized(w) &&
XtIsSensitive(w) && XtIsManaged(w) && w->core.visible )
{
Widget p ;
for(p = XtParent(w); !XtIsShell(p); p = XtParent(p)) ;
XtSetKeyboardFocus(p,w) ;
return True ;
}
else
return False ;
}
/*
* Return status, with preferred size in PREFERRED.
*
* According to the X Toolkit Intrinsics manual
* XtGeometryYes = accept INTENDED without change
* XtGeometryNo = request to stay _exactly_ the same
* XtGeometryAlmost = suggest PREFERRED as a compromise
* and the PREFERRED argument must be filled in completely (ie, any fields
* whose bits are set in the request_mode mask must correspond to the
* preferred geometry, which must be consistent with the return value).
*
* Assuming horizontal orientation, in XEmacs, we should always accept if
* the width is more than we need. There's no problem if there are only a
* couple of tabs packed to the left. OTOH there's probably something wrong
* if we're offered a height more than 1.5x or 2x the preferred height.
* (#### Do tab controls do vertical?)
*/
/* compute the height above which we complain */
#define TAB_HEIGHT_TOLERANCE(x) (2*x)
static XtGeometryResult
TabsQueryGeometry (Widget w,
XtWidgetGeometry *intended,
XtWidgetGeometry *preferred) /* RETURN */
{
TabsWidget tw = (TabsWidget) w;
XtGeometryMask mode = intended->request_mode;
preferred->request_mode = CWWidth | CWHeight;
PreferredSize (tw, &preferred->width, &preferred->height, NULL, NULL);
/* If width is big enough, accept it. */
if ((mode & CWWidth) && intended->width >= preferred->width)
preferred->width = intended->width;
/* If height is within range, accept it.
#### If too tall, we could offer a compromise at TAB_HEIGHT_TOLERANCE.
Should we? */
if ((mode & CWHeight) && intended->height >= preferred->height
&& intended->height <= TAB_HEIGHT_TOLERANCE (preferred->height))
preferred->height = intended->height;
/* Compute return value. */
if (preferred->width == ((mode & CWWidth) ? intended->width
: w->core.width)
&& preferred->height == ((mode & CWHeight) ? intended->height
: w->core.height))
return XtGeometryYes;
else if (preferred->width == w->core.width
&& preferred->height == w->core.height)
return XtGeometryNo;
else
return XtGeometryAlmost;
}
/*
* Geometry Manager; called when TAB (a child) wants to be resized.
*
* According to the X Toolkit Intrinsics manual
* XtGeometryDone = accept REQUEST and do it (#### check this)
* XtGeometryYes = accept REQUEST without change
* XtGeometryNo = refuse REQUEST (ie, stay _exactly_ the same)
* XtGeometryAlmost = suggest REPLY as a compromise
*/
static XtGeometryResult
TabsGeometryManager (Widget tab,
XtWidgetGeometry *request,
XtWidgetGeometry *reply) /* RETURN */
{
TabsWidget control = (TabsWidget) XtParent(tab);
Dimension s = SHADWID;
TabsConstraints constraint = (TabsConstraints) tab->core.constraints;
XtGeometryResult result, best_offer = XtGeometryYes;
Dimension rw, rh;
static int debug_count = 0;
static int debug_mask = 1;
/* Position request cannot be satisfied, so if tabs are not resizable,
no nontrivial request can be satisfied: return XGeometryNo. */
if (!constraint->tabs.resizable)
return XtGeometryNo;
fprintf (stderr, "Urk! label is resizable!\n");
/* Assume we will refuse these; toggle iff we accept them.
Reply won't specify any fields not in the request. */
reply->request_mode = request->request_mode;
reply->x = tab->core.x;
reply->y = tab->core.y;
/* If a position request would result in a change, best offer is
XtGeometryAlmost. Otherwise toggle reply->request_mode. */
if ((request->request_mode & CWX) && request->x != tab->core.x)
best_offer = XtGeometryAlmost;
else
reply->request_mode &= ~CWX;
if ((request->request_mode & CWY) && request->y != tab->core.y)
best_offer = XtGeometryAlmost;
else
reply->request_mode &= ~CWY;
/* Make all three fields in the reply valid */
reply->width = (request->request_mode & CWWidth)
? request->width : tab->core.width;
reply->height = (request->request_mode & CWHeight)
? request->height : tab->core.height;
reply->border_width = (request->request_mode & CWBorderWidth)
? request->border_width : tab->core.border_width;
/* check if we can already offer a compromise */
if (best_offer == XtGeometryAlmost &&
reply->width == tab->core.width &&
reply->height == tab->core.height &&
reply->border_width == tab->core.border_width)
{
reply->request_mode &= ~(CWWidth | CWHeight | CWBorderWidth);
return best_offer;
}
#ifndef DONT_DEBUG_REQUESTS
#define DBG_REQUEST_PRINT(name,field,size) \
do { \
if (reply->field > size) \
{ \
if (++debug_count == debug_mask) \
{ \
debug_mask <<= 1; \
fprintf (stderr, "ridiculous %s request #%d: %d > %d\n", \
name, debug_count, reply->field, size); \
} \
reply->field = tab->core.field; \
} \
} while (0)
DBG_REQUEST_PRINT ("width",width,1024);
DBG_REQUEST_PRINT ("height",height,768);
DBG_REQUEST_PRINT ("border_width",border_width,30);
#undef DBG_REQUEST_PRINT
#endif
rw = reply->width + 2 * reply->border_width;
rh = reply->height + 2 * reply->border_width;
/* find out how big the children want to be now */
MaxChild (control, tab, rw, rh);
/* Size changes must see if the new size can be accommodated.
* The Tabs widget keeps all of its children the same height, but
* widths may vary.
* A request to shrink will be accepted only if the
* new size is still big enough for all other children. A
* request to shrink that is not big enough for all children
* returns an "almost" response with the new proposed size
* or a "no" response if unable to shrink at all.
*
* A request to grow will be accepted only if the Tabs control can
* grow to accommodate.
*
* TODO:
* We could get fancy here and re-arrange the tabs if it is
* necessary to compromise with the parent, but we'll save that
* for another day.
*/
if (request->request_mode & (CWWidth | CWHeight | CWBorderWidth))
{
Dimension cw,ch ; /* children's preferred size */
Dimension aw,ah ; /* available size we can give child */
Dimension th ; /* space used by tabs */
Dimension wid,hgt ; /* Tabs widget size */
int check_nrows;
cw = control->tabs.max_cw ;
ch = control->tabs.max_ch ;
/* find out what *my* resulting preferred size would be */
/* #### this whole API is wrong; what should happen is
1. app should hint as to #rows and/or aspect ratio
2. tab control should attempt to layout in current space
3. if not all tabs fit, should request resize to achieve
layout hints
Probably can and should cache preferred size in widget, with
cache cleared when labels or core size changes. */
PreferredSize2(control, cw, ch, &wid, &hgt) ;
/* Would my size change? If so, ask to be resized. */
if (wid != control->core.width || hgt != control->core.height)
{
Dimension oldWid = control->core.width,
oldHgt = control->core.height;
XtWidgetGeometry myrequest, myreply ;
myrequest.width = wid ;
myrequest.height = hgt ;
myrequest.request_mode = CWWidth | CWHeight ;
assert (wid > 0 && hgt > 0);
/* If child is only querying, or if we're going to have to
* offer the child a compromise, then make this a query only.
*/
if ((request->request_mode & XtCWQueryOnly) || rw < cw || rh < ch)
myrequest.request_mode |= XtCWQueryOnly;
result = XtMakeGeometryRequest ((Widget) control,
&myrequest, &myreply);
/* !$@# Athena Box widget changes the core size even if QueryOnly
* is set. I'm convinced this is a bug. At any rate, to work
* around the bug, we need to restore the core size after every
* query geometry request. This is only partly effective,
* as there may be other boxes further up the tree.
*/
if (myrequest.request_mode & XtCWQueryOnly) {
control->core.width = oldWid;
control->core.height = oldHgt;
}
/* based on the parent's response, determine what the
* resulting Tabs widget size would be.
*/
switch (result) {
case XtGeometryYes:
case XtGeometryDone:
control->tabs.needs_layout = True;
break;
case XtGeometryNo:
wid = control->core.width;
hgt = control->core.height;
break;
case XtGeometryAlmost:
wid = myreply.width;
hgt = myreply.height;
control->tabs.needs_layout = True;
break;
}
}
/* Within the constraints imposed by the parent, what is
* the max size we can give the child?
*/
check_nrows = TabLayout (control, wid, hgt, &th, True);
aw = wid - 2*s;
if (check_nrows == 1)
{
ah = hgt - th - 2*s;
}
else
{
/* this rarely gets triggered, but when it does it seems to
get triggered forever after */
int n = control->composite.num_children;
ah = control->tabs.tab_height;
if (debug_tabs > 1)
fprintf (stderr, "Kludging around %d != 1 rows,"
" #children = %d, total height %d, using %d.\n",
check_nrows, n, th, ah);
}
/* OK, make our decision. If requested size is >= max sibling
* preferred size, AND requested size <= available size, then
* we accept. Otherwise, we offer a compromise.
*/
if (rw == aw && rh == ah)
{
/* Acceptable. If this wasn't a query, change *all* children
* to this size.
*/
if (request->request_mode & XtCWQueryOnly)
{
control->tabs.needs_layout = False;
return XtGeometryYes ;
}
else
{
Widget *childP = control->composite.children;
int i, bw;
tab->core.border_width = request->border_width;
for (i = TabsNumChildren (control); --i >= 0; ++childP)
if (TabVisible (*childP))
{
bw = (*childP)->core.border_width;
XtConfigureWidget (*childP, s, control->tabs.tab_total+s,
rw-2*bw, rh-2*bw, bw);
}
#ifdef COMMENT
/* TODO: under what conditions will we need to redraw? */
XClearWindow (XtDisplay ((Widget) control),
XtWindow ((Widget) control));
XtClass (control)->core_class.expose ((Widget)control,
NULL, NULL);
#endif /* COMMENT */
return XtGeometryDone;
}
}
/* Cannot grant child's request. Describe what we *can* do
* and return counter-offer.
*/
control->tabs.needs_layout = False;
reply->width = aw - 2 * request->border_width ;
reply->height = ah - 2 * request->border_width ;
reply->request_mode &=
~((reply->border_width == tab->core.border_width
? CWBorderWidth : 0)
|(reply->width == tab->core.width ? CWWidth : 0)
|(reply->height == tab->core.height ? CWHeight : 0));
return XtGeometryAlmost ;
}
return XtGeometryYes ;
}
/* The number of children we manage has changed; recompute
* size from scratch.
*/
static void
TabsChangeManaged(Widget w)
{
TabsWidget tw = (TabsWidget)w ;
Widget *childP = tw->composite.children ;
int i ;
if( tw->tabs.topWidget != NULL &&
( !XtIsManaged(tw->tabs.topWidget) ||
tw->tabs.topWidget->core.being_destroyed ) )
tw->tabs.topWidget = NULL ;
/* Check whether the highlight tab is still valid. */
if( tw->tabs.hilight != NULL &&
( !XtIsManaged(tw->tabs.hilight) ||
tw->tabs.hilight->core.being_destroyed ) )
tw->tabs.hilight = NULL ;
GetPreferredSizes(tw) ;
MakeSizeRequest(tw) ;
XtClass(w)->core_class.resize(w) ;
if( XtIsRealized(w) )
{
Display *dpy = XtDisplay(w) ;
XClearWindow(dpy, XtWindow(w)) ;
XtClass(w)->core_class.expose(w,NULL,NULL) ;
/* make sure the top widget stays on top. This requires
* making sure that all new children are realized first.
*/
if( tw->tabs.topWidget != NULL && XtIsRealized(tw->tabs.topWidget) )
{
for(i=TabsNumChildren (tw); --i >= 0; ++childP)
if( !XtIsRealized(*childP) )
XtRealizeWidget(*childP) ;
XRaiseWindow(dpy, XtWindow(tw->tabs.topWidget)) ;
}
}
#ifdef NEED_MOTIF
/* Only top widget may receive input */
for(childP = tw->composite.children, i=tw->composite.num_children;
--i >= 0;
++childP)
{
XtVaSetValues(*childP, XmNtraversalOn, False, 0) ;
}
if( tw->tabs.topWidget != NULL )
XtVaSetValues(tw->tabs.topWidget, XmNtraversalOn, True, 0) ;
#endif
}
/****************************************************************
*
* Action Procedures
*
****************************************************************/
/* User clicks on a tab, figure out which one it was. */
/* ARGSUSED */
static void
TabsSelect(Widget w, XEvent *event, String *UNUSED (params),
Cardinal *UNUSED (num_params))
{
TabsWidget tw = (TabsWidget) w ;
Widget *childP ;
Position x,y ;
Dimension h = tw->tabs.tab_height ;
int i ;
#ifdef NEED_MOTIF
XmProcessTraversal (w, XmTRAVERSE_CURRENT) ;
#endif
/* TODO: is there an Xmu function or something to do this instead? */
switch( event->type ) {
case ButtonPress:
case ButtonRelease:
x = event->xbutton.x ; y = event->xbutton.y ; break ;
case KeyPress:
case KeyRelease:
x = event->xkey.x ; y = event->xkey.y ; break ;
default:
return ;
}
/* TODO: determine which tab was clicked, if any. Set that
* widget to be top of stacking order with XawTabsSetTop().
*/
for(i=0, childP=tw->composite.children;
i < (int) TabsNumChildren (tw);
++i, ++childP)
if( TabVisible(*childP) )
{
TabsConstraints tab = (TabsConstraints)(*childP)->core.constraints;
if( x > tab->tabs.x && x < tab->tabs.x + tab->tabs.width &&
y > tab->tabs.y && y < tab->tabs.y + h )
{
if( *childP != tw->tabs.topWidget &&
(XtIsSensitive(*childP) || tw->tabs.selectInsensitive) )
XawTabsSetTop(*childP, True) ;
break ;
}
}
}
/* User hits a key */
static void
TabsPage(Widget w, XEvent *UNUSED (event), String *params,
Cardinal *num_params)
{
TabsWidget tw = (TabsWidget) w ;
Widget newtop = NULL;
Widget *childP ;
int idx ;
int nc = TabsNumChildren (tw) ;
if( nc <= 0 )
return ;
if( *num_params < 1 ) {
XtAppWarning(XtWidgetToApplicationContext(w),
"Tabs: page() action called with no arguments") ;
return ;
}
if( tw->tabs.topWidget == NULL )
tw->tabs.topWidget = tw->composite.children[0] ;
for(idx=0, childP=tw->composite.children; idx < nc; ++idx, ++childP )
if( tw->tabs.topWidget == *childP )
break ;
switch( params[0][0] ) {
case 'u': /* up */
case 'U':
if( --idx < 0 )
idx = nc-1 ;
newtop = tw->composite.children[idx] ;
break ;
case 'd': /* down */
case 'D':
if( ++idx >= nc )
idx = 0 ;
newtop = tw->composite.children[idx] ;
break ;
case 'h':
case 'H':
default:
newtop = tw->composite.children[0] ;
break ;
case 'e':
case 'E':
newtop = tw->composite.children[nc-1] ;
break ;
case 's': /* selected */
case 'S':
if( (newtop = tw->tabs.hilight) == NULL )
return ;
break ;
}
XawTabsSetTop(newtop, True) ;
}
/* User hits up/down key */
static void
TabsHighlight(Widget w, XEvent *UNUSED (event), String *params,
Cardinal *num_params)
{
TabsWidget tw = (TabsWidget) w ;
Widget newhl = NULL;
Widget *childP ;
int idx ;
int nc = TabsNumChildren (tw) ;
if( nc <= 0 )
return ;
if( *num_params < 1 )
{
if( tw->tabs.hilight != NULL )
DrawHighlight(tw, tw->tabs.hilight, False) ;
return ;
}
if( tw->tabs.hilight == NULL )
newhl = tw->composite.children[0] ;
else
{
/* find index of currently highlit child */
for(idx=0, childP=tw->composite.children; idx < nc; ++idx, ++childP )
if( tw->tabs.hilight == *childP )
break ;
switch( params[0][0] ) {
case 'u': /* up */
case 'U':
if( --idx < 0 )
idx = nc-1 ;
newhl = tw->composite.children[idx] ;
break ;
case 'd': /* down */
case 'D':
if( ++idx >= nc )
idx = 0 ;
newhl = tw->composite.children[idx] ;
break ;
case 'h':
case 'H':
newhl = tw->composite.children[0] ;
break ;
case 'e':
case 'E':
newhl = tw->composite.children[nc-1] ;
break ;
default:
newhl = tw->tabs.hilight ;
break ;
}
}
XawTabsSetHighlight(w, newhl) ;
}
static void
TabsUnhighlight(Widget w, XEvent *UNUSED (event), String *UNUSED (params),
Cardinal *UNUSED (num_params))
{
TabsWidget tw = (TabsWidget) w ;
int nc = tw->composite.num_children ;
if( nc <= 0 )
return ;
if( tw->tabs.hilight != NULL )
DrawHighlight(tw, tw->tabs.hilight, True) ;
}
/****************************************************************
*
* Public Procedures
*
****************************************************************/
/* Set the top tab, optionally call all callbacks. */
void
XawTabsSetTop(Widget w, Bool callCallbacks)
{
TabsWidget tw = (TabsWidget)w->core.parent ;
TabsConstraints tab ;
Widget oldtop = tw->tabs.topWidget ;
if( !XtIsSubclass(w->core.parent, tabsWidgetClass) )
{
char line[256] ;
sprintf(line, "XawTabsSetTop: widget \"%.64s\" is not the child of a tabs widget.", XtName(w)) ;
XtAppWarning(XtWidgetToApplicationContext(w), line) ;
return ;
}
if( callCallbacks )
XtCallCallbackList(w, tw->tabs.popdownCallbacks,
(XtPointer)tw->tabs.topWidget) ;
if( !XtIsRealized(w) ) {
tw->tabs.topWidget = w ;
tw->tabs.needs_layout = True ;
tw->tabs.hilight = NULL; /* The highlight tab might disappear. */
return ;
}
XRaiseWindow(XtDisplay(w), XtWindow(w)) ;
#ifdef NEED_MOTIF
XtVaSetValues(oldtop, XmNtraversalOn, False, 0) ;
XtVaSetValues(w, XmNtraversalOn, True, 0) ;
#endif
tab = (TabsConstraints) w->core.constraints ;
/* Unhighlight before we start messing with the stacking order. */
if( tw->tabs.hilight != NULL )
{
DrawHighlight(tw, tw->tabs.hilight, True) ;
tw->tabs.hilight = NULL;
}
if( tab->tabs.row == 0 )
{
/* Easy case; undraw current top, undraw new top, assign new
* top, redraw all borders.
* We *could* just erase and execute a full redraw, but I like to
* reduce screen flicker.
*/
UndrawTab(tw, oldtop) ; /* undraw old */
DrawBorder(tw, oldtop, True) ;
UndrawTab(tw, w) ; /* undraw new */
DrawBorder(tw, w, True) ;
tw->tabs.topWidget = w ;
DrawTab(tw, oldtop, True) ; /* redraw old */
DrawTab(tw, w, True) ; /* redraw new */
DrawTabs(tw, False) ;
}
else
{
tw->tabs.topWidget = w ;
TabsShuffleRows(tw) ;
XClearWindow(XtDisplay((Widget)tw), XtWindow((Widget)tw)) ;
XtClass(tw)->core_class.expose((Widget)tw,NULL,None) ;
}
XawTabsSetHighlight((Widget)tw, w) ;
if( callCallbacks )
XtCallCallbackList(w, tw->tabs.callbacks, (XtPointer)w) ;
}
/* Set the top tab, optionally call all callbacks. */
void
XawTabsSetHighlight(Widget t, Widget w)
{
TabsWidget tw = (TabsWidget)t ;
if( !XtIsSubclass(t, tabsWidgetClass) )
return ;
if( XtIsRealized(t) && w != tw->tabs.hilight )
{
if( w != NULL )
DrawHighlight(tw, w, False) ;
}
tw->tabs.hilight = w ;
}
/****************************************************************
*
* Private Procedures
*
****************************************************************/
static void
TabsAllocGCs(TabsWidget tw)
{
TabsAllocFgGC(tw) ;
TabsAllocGreyGC(tw) ;
tw->tabs.backgroundGC = AllocBackgroundGC((Widget)tw, None) ;
tw->tabs.topGC = AllocTopShadowGC((Widget)tw,
tw->tabs.top_shadow_contrast, tw->tabs.be_nice_to_cmap) ;
tw->tabs.botGC = AllocBotShadowGC((Widget)tw,
tw->tabs.bot_shadow_contrast, tw->tabs.be_nice_to_cmap) ;
}
static void
TabsFreeGCs(TabsWidget tw)
{
Widget w = (Widget) tw;
XtReleaseGC(w, tw->tabs.foregroundGC) ;
XtReleaseGC(w, tw->tabs.greyGC) ;
XtReleaseGC(w, tw->tabs.backgroundGC) ;
XtReleaseGC(w, tw->tabs.topGC) ;
XtReleaseGC(w, tw->tabs.botGC) ;
XmuReleaseStippledPixmap(XtScreen(w), tw->tabs.grey50) ;
}
/* Redraw entire Tabs widget */
static void
DrawTabs(TabsWidget tw, Bool labels)
{
Widget *childP ;
int i,j ;
Dimension s = SHADWID ;
Dimension th = tw->tabs.tab_height ;
Position y ;
TabsConstraints tab ;
if( !XtIsRealized((Widget)tw))
return ;
/* draw tabs and frames by row except for the top tab, which
* is drawn last. (This is inefficiently written, but should not
* be too slow as long as there are not a lot of rows.)
*/
y = tw->tabs.numRows == 1 ? TABDELTA : 0 ;
for(i=0; i < (int) tw->tabs.numRows; ++i, y += th)
{
for( j=TabsNumChildren (tw), childP=tw->composite.children;
--j >= 0; ++childP )
if( TabVisible(*childP) )
{
tab = (TabsConstraints)(*childP)->core.constraints;
if( tab->tabs.row == i && *childP != tw->tabs.topWidget )
DrawTab(tw, *childP, labels) ;
}
if( i != (int) tw->tabs.numRows -1 )
DrawTrim(tw, 0,y+th, tw->core.width, th+s, False,False) ;
}
DrawFrame(tw) ;
/* and now the top tab */
if( tw->tabs.topWidget != NULL )
DrawTab(tw, tw->tabs.topWidget, labels) ;
}
/* Draw one tab. Corners are rounded very slightly. */
static void
DrawTab(TabsWidget tw, Widget child, Bool labels)
{
GC gc ;
int x,y ;
if (debug_tabs > 2) fprintf (stderr, "DrawTab called.\n");
if( !XtIsRealized((Widget)tw))
return ;
DrawBorder(tw, child, False) ;
if( labels )
{
TabsConstraints tab = (TabsConstraints)child->core.constraints;
Display *dpy = XtDisplay((Widget)tw) ;
Window win = XtWindow((Widget)tw) ;
String lbl = tab->tabs.label != NULL ?
tab->tabs.label : XtName(child) ;
#ifdef HAVE_XFT_TABS
XftColor color;
XftColor colorBG;
Colormap cmap = tw->core.colormap;
Visual *visual;
int ignored;
visual_info_from_widget ((Widget) tw, &visual, &ignored);
colorBG = xft_convert_color (dpy, cmap, visual,
tw->core.background_pixel, 0);
#endif
if (debug_tabs > 2)
fprintf (stderr, "(Re)drawing labels.\n");
if (XtIsSensitive(child))
{
gc = tw->tabs.foregroundGC;
#ifdef HAVE_XFT_TABS
color = xft_convert_color (dpy, cmap, visual,
tab->tabs.foreground, 0);
#else
XSetForeground(dpy, gc, tab->tabs.foreground);
#endif
}
else
{
/* grey pixel allocation deferred until now */
if (!tab->tabs.greyAlloc)
{
if (tw->tabs.be_nice_to_cmap || tw->core.depth == 1)
tab->tabs.grey = tab->tabs.foreground;
else
tab->tabs.grey = AllocGreyPixel ((Widget) tw,
tab->tabs.foreground,
tw->core.background_pixel,
tw->tabs.insensitive_contrast);
tab->tabs.greyAlloc = True;
}
gc = tw->tabs.greyGC;
#ifdef HAVE_XFT_TABS
color = xft_convert_color (dpy, cmap, visual, tab->tabs.grey, 0);
#else
XSetForeground(dpy, gc, tab->tabs.grey);
#endif
}
x = tab->tabs.x;
y = tab->tabs.y;
if (child == tw->tabs.topWidget)
y -= TABLDELTA;
if (tab->tabs.left_bitmap != None && tab->tabs.lbm_width > 0)
{
if (tab->tabs.lbm_depth == 1)
XCopyPlane(dpy, tab->tabs.left_bitmap, win,gc,
0,0, tab->tabs.lbm_width, tab->tabs.lbm_height,
x+tab->tabs.lbm_x, y+tab->tabs.lbm_y, 1L);
else
XCopyArea(dpy, tab->tabs.left_bitmap, win,gc,
0,0, tab->tabs.lbm_width, tab->tabs.lbm_height,
x+tab->tabs.lbm_x, y+tab->tabs.lbm_y);
}
if (lbl != NULL &&
#ifdef HAVE_XFT_TABS
tw->tabs.renderFont != NULL
#else
tw->tabs.font != NULL
#endif
)
{
#ifdef HAVE_XFT_TABS
XftDraw *xftDraw = XftDrawCreate (dpy, win, visual, cmap);
XftFont *renderFont = tw->tabs.renderFont;
XGlyphInfo glyphinfo;
XftColor colorDBG;
XftColorAllocName (dpy, visual, cmap, "wheat", &colorDBG);
XftTextExtents8 (dpy, renderFont, (FcChar8 *) lbl,
(int) strlen (lbl), &glyphinfo);
/* #### unnecessary? for the moment, give visual extent */
/* draw background rect */
if (debug_tabs > 2)
{
fprintf (stderr, "background color: pixel=%08lx, r=%04x,"
" g=%04x, b=%04x, alpha=%04x.\n",
colorDBG.pixel, colorDBG.color.red,
colorDBG.color.green, colorDBG.color.blue,
colorDBG.color.alpha);
fprintf (stderr, "label geometry: x=%d, y=%d, xOff=%d,"
" yOff=%d, width=%d, height=%d\n",
glyphinfo.x, glyphinfo.y, glyphinfo.xOff,
glyphinfo.yOff, glyphinfo.width, glyphinfo.height);
}
if (debug_tabs > 2)
XftDrawRect (xftDraw, &colorDBG,
/* left, top, width, height */
x+tab->tabs.l_x-glyphinfo.x,
y+tab->tabs.l_y-glyphinfo.y,
glyphinfo.width, glyphinfo.height);
/* draw text */
if (debug_tabs > 1)
{
fprintf (stderr, "label: %s.\n", lbl);
fprintf (stderr, "foreground color: pixel=%08lx, r=%04x,"
" g=%04x, b=%04x, alpha=%04x.\n",
color.pixel, color.color.red, color.color.green,
color.color.blue, color.color.alpha);
fprintf (stderr, "extent: x=%d, y=%d, xOffset=%d,"
" yOffset=%d, height=%d, width=%d.\n",
glyphinfo.x, glyphinfo.y, glyphinfo.xOff,
glyphinfo.yOff, glyphinfo.height, glyphinfo.width);
}
if (debug_tabs > 0)
{
FcValue name;
FcValue size;
FcPatternGet (renderFont->pattern, FC_FAMILY, 0, &name);
FcPatternGet (renderFont->pattern, FC_SIZE, 0, &size);
fprintf (stderr, "font: name=%s-%.1f,"
" height=%d, ascent=%d, descent=%d.\n",
name.u.s, size.u.d, renderFont->height,
renderFont->ascent, renderFont->descent);
}
XftDrawString8 (xftDraw, &color, renderFont,
x+tab->tabs.l_x, y+tab->tabs.l_y,
(FcChar8 *) lbl, (int) strlen (lbl));
XftDrawDestroy (xftDraw);
#else
XDrawString(dpy,win,gc,
x+tab->tabs.l_x, y+tab->tabs.l_y,
lbl, (int)strlen(lbl));
#endif
}
}
if (child == tw->tabs.hilight)
DrawHighlight(tw, child, False);
}
/* draw frame all the way around the child windows. */
static void
DrawFrame(TabsWidget tw)
{
GC topgc = tw->tabs.topGC ;
GC botgc = tw->tabs.botGC ;
Dimension s = SHADWID ;
Dimension ch = tw->tabs.child_height ;
if (ch > 0)
Draw3dBox((Widget)tw, 0,tw->tabs.tab_total,
tw->core.width, ch+2*s, s, topgc, botgc) ;
else
{
Widget w = tw->tabs.topWidget ;
if (w != NULL)
{
TabsConstraints tab = (TabsConstraints) w->core.constraints ;
Draw3dBox((Widget)tw, 0,tw->core.height - 2*s,
tab->tabs.x, 2*s, s, topgc, botgc);
Draw3dBox((Widget)tw, tab->tabs.x + tab->tabs.width,
tw->core.height - 2*s,
tw->core.width - tab->tabs.x - tab->tabs.width, 2*s, s,
topgc, botgc);
}
else
Draw3dBox((Widget)tw, 0,tw->core.height - 2*s,
tw->core.width, 2*s, s, topgc, botgc) ;
}
}
/* draw trim around a tab or underneath a row of tabs */
static void
DrawTrim(TabsWidget tw, /* widget */
int x, /* upper-left corner */
int y,
int wid, /* total size */
int hgt,
Bool bottom, /* draw bottom? */
Bool undraw) /* undraw all */
{
Display *dpy = XtDisplay((Widget)tw) ;
Window win = XtWindow((Widget)tw) ;
GC bggc = tw->tabs.backgroundGC ;
GC topgc = undraw ? bggc : tw->tabs.topGC ;
GC botgc = undraw ? bggc : tw->tabs.botGC ;
if( bottom )
XDrawLine(dpy,win,bggc, x,y+hgt-1, x+wid-1,y+hgt-1) ; /* bottom */
XDrawLine(dpy,win,topgc, x,y+2, x,y+hgt-2) ; /* left */
XDrawPoint(dpy,win,topgc, x+1,y+1) ; /* corner */
XDrawLine(dpy,win,topgc, x+2,y, x+wid-3,y) ; /* top */
XDrawLine(dpy,win,botgc, x+wid-2,y+1, x+wid-2,y+hgt-2) ; /* right */
XDrawLine(dpy,win,botgc, x+wid-1,y+2, x+wid-1,y+hgt-2) ; /* right */
}
/* Draw one tab border. */
static void
DrawBorder(TabsWidget tw, Widget child, Bool undraw)
{
TabsConstraints tab = (TabsConstraints)child->core.constraints;
Position x = tab->tabs.x ;
Position y = tab->tabs.y ;
Dimension twid = tab->tabs.width ;
Dimension thgt = tw->tabs.tab_height ;
/* top tab requires a little special attention; it overlaps
* neighboring tabs slightly, so the background must be cleared
* in the region of the overlap to partially erase those neighbors.
* TODO: is this worth doing with regions instead?
*/
if( child == tw->tabs.topWidget )
{
Display *dpy = XtDisplay((Widget)tw) ;
Window win = XtWindow((Widget)tw) ;
GC bggc = tw->tabs.backgroundGC ;
XRectangle rects[3] ;
x -= TABDELTA ;
y -= TABDELTA ;
twid += TABDELTA*2 ;
thgt += TABDELTA ;
AddRect(0, x,y+1,twid,TABDELTA) ;
AddRect(1, x+1,y,TABDELTA,thgt) ;
AddRect(2, x+twid-TABDELTA-1,y,TABDELTA,thgt) ;
XFillRectangles(dpy,win,bggc, rects, 3) ;
}
DrawTrim(tw, x,y,twid,thgt+1, child == tw->tabs.topWidget, undraw) ;
}
/* Draw highlight around tab that has focus */
static void
DrawHighlight(TabsWidget tw, Widget child, Bool undraw)
{
TabsConstraints tab = (TabsConstraints)child->core.constraints;
Display *dpy = XtDisplay((Widget)tw) ;
Window win = XtWindow((Widget)tw) ;
GC gc ;
Position x = tab->tabs.x ;
Position y = tab->tabs.y ;
Dimension wid = tab->tabs.width ;
Dimension hgt = tw->tabs.tab_height ;
XPoint points[6] ;
/* top tab does not have a highlight */
if( child == tw->tabs.topWidget )
return ;
if( undraw )
gc = tw->tabs.backgroundGC ;
else if( XtIsSensitive(child) )
{
gc = tw->tabs.foregroundGC ;
XSetForeground(dpy, gc, tab->tabs.foreground) ;
}
else
{
gc = tw->tabs.greyGC ;
XSetForeground(dpy, gc, tab->tabs.grey) ;
}
points[0].x = x+1 ; points[0].y = y+hgt-1 ;
points[1].x = x+1 ; points[1].y = y+2 ;
points[2].x = x+2 ; points[2].y = y+1 ;
points[3].x = x+wid-4 ; points[3].y = y+1 ;
points[4].x = x+wid-3 ; points[4].y = y+2 ;
points[5].x = x+wid-3 ; points[5].y = y+hgt-1 ;
XDrawLines(dpy,win,gc, points,6, CoordModeOrigin) ;
}
/* Undraw one tab interior */
static void
UndrawTab(TabsWidget tw, Widget child)
{
TabsConstraints tab = (TabsConstraints)child->core.constraints;
Position x = tab->tabs.x ;
Position y = tab->tabs.y ;
Dimension twid = tab->tabs.width ;
Dimension thgt = tw->tabs.tab_height ;
Display *dpy = XtDisplay((Widget)tw) ;
Window win = XtWindow((Widget)tw) ;
GC bggc = tw->tabs.backgroundGC ;
XFillRectangle(dpy,win,bggc, x,y, twid,thgt) ;
}
/* GEOMETRY UTILITIES */
/* Overview:
*
* MaxChild(): ask all children (except possibly one) their
* preferred sizes, set max_cw, max_ch accordingly.
*
* GetPreferredSizes(): ask all children their preferred sizes,
* set max_cw, max_ch accordingly.
*
* PreferredSize(): given max_cw, max_ch, return tabs widget
* preferred size. Iterate with other widths in order to get
* a reasonable aspect ratio.
*
* PreferredSize2(): Given child dimensions, return Tabs
* widget dimensions.
*
* PreferredSize3(): Same, except given child dimensions plus
* shadow.
*/
/* Compute the width of one child's tab. Positions will be computed
* elsewhere.
*
* height: font height + vertical_space*2 + shadowWid*2
* width: string width + horizontal_space*2 + shadowWid*2
*
* All tabs are the same height, so that is computed elsewhere.
*/
static void
TabWidth(Widget w)
{
TabsConstraints tab = (TabsConstraints) w->core.constraints ;
TabsWidget tw = (TabsWidget)XtParent(w) ;
String lbl = tab->tabs.label != NULL ?
tab->tabs.label : XtName(w);
#ifdef HAVE_XFT_TABS
XftFont *font = tw->tabs.renderFont;
#else
XFontStruct *font = tw->tabs.font;
#endif
int iw = tw->tabs.internalWidth;
tab->tabs.width = iw + SHADWID*2 ;
tab->tabs.l_x = tab->tabs.lbm_x = SHADWID + iw ;
if( tab->tabs.left_bitmap != None )
{
tab->tabs.width += tab->tabs.lbm_width + iw ;
tab->tabs.l_x += tab->tabs.lbm_width + iw ;
tab->tabs.lbm_y = (tw->tabs.tab_height - tab->tabs.lbm_height)/2 ;
}
if( lbl != NULL && font != NULL )
{
#ifdef HAVE_XFT_TABS
tab->tabs.width += x_xft_text_width (XtDisplay(tw), font,
(FcChar8 *) lbl,
(int)strlen(lbl)) + iw;
tab->tabs.l_y = (tw->tabs.tab_height
+ tw->tabs.renderFont->ascent
/* #### how can this subtraction be correct? */
- tw->tabs.renderFont->descent)/2;
if (debug_tabs > 2)
fprintf (stderr, "tab: height=%d, width=%d, baseline=%d.\n",
tw->tabs.tab_height, tab->tabs.width, tab->tabs.l_y);
if (debug_tabs > 1)
fprintf (stderr, "font: height=%d, ascent=%d, descent=%d.\n",
tw->tabs.renderFont->height,
tw->tabs.renderFont->ascent,
tw->tabs.renderFont->descent);
#else
tab->tabs.width += XTextWidth (font, lbl, (int)strlen(lbl)) + iw;
tab->tabs.l_y = (tw->tabs.tab_height +
tw->tabs.font->max_bounds.ascent -
tw->tabs.font->max_bounds.descent)/2;
#endif
}
}
/* Lay out tabs to fit in given width. Compute x,y position and
* row number for each tab. Return number of rows and total height
* required by all tabs. If there is only one row, add TABDELTA
* height to the total. Rows are assigned bottom to top.
*
* Tabs are indented from the edges by INDENT.
*
* TODO: if they require more than two rows and the total height:width
* ratio is more than 2:1, then try something else.
* Gaak! This is actually already done in PreferredSize()!
*
* TODO SOONER: for reasons unclear, some applications (specifically
* XEmacs) give a nominal geometry (in the core record) which doesn't
* make much sense (eg, may be smaller than some of the tab children).
* This results in bizarre values for DISPLAY_ROWS and REPLY_HEIGHT.
* Specify a way to say "tell me what you really want" (eg, with WID
* and/or HGT == 0 or == Dimension_MAX), and use it where appropriate.
* LATE-BREAKING LOSE: This happens in PreferredSize(), not XEmacs!
*
* TODO EVEN SOONER: some applications lay out the tab control by
* repeatedly querying until a fixed width and height has been filled
* by the tabs (XEmacs). There should be an API to cache this?
*/
static int
TabLayout(TabsWidget tw,
Dimension wid, /* if 0, use core.width as guess */
Dimension hgt, /* if 0, use core.height as guess */
Dimension *reply_height, Bool query_only)
{
int i, row, done = 0, display_rows = 0 ;
int num_children = tw->composite.num_children ;
Widget *childP ;
Dimension w ;
Position x,y ; /* #### gaak, these are dimensions! */
TabsConstraints tab ;
/* Algorithm: loop through children, assign X positions. If a tab
* would extend beyond the right edge, start a new row. After all
* rows are assigned, make a second pass and assign Y positions.
*/
if( num_children > 0 )
{
/* Loop through the tabs and see how much space they need. */
row = 0 ;
x = INDENT ;
y = 0 ;
/* If wid or hgt is 0, we want to guess our own dimensions.
Currently the guessing functions are broken....
#### When PreferredSize*() get fixed, fix this too. */
if (debug_tabs > 1)
fprintf (stderr, "arg=%d,", wid);
wid = (wid ? wid : tw->core.width) - INDENT ;
hgt = hgt ? hgt : tw->core.height;
if (debug_tabs > 1)
fprintf (stderr, "wid=%d: x,w,y=", wid);
for(i=num_children, childP=tw->composite.children; --i >= 0; ++childP)
if( XtIsManaged(*childP) )
{
tab = (TabsConstraints) (*childP)->core.constraints ;
w = tab->tabs.width ;
if (debug_tabs > 1)
fprintf (stderr, "%d,%d,%d;", x, w, y);
if( x + w > wid ) { /* new row */
/* #### algorithm is not robust to wid < child's width */
++row;
x = INDENT ;
y += tw->tabs.tab_height ;
if (y > hgt && !done)
{
display_rows = row;
done = 1;
}
}
if( !query_only ) {
tab->tabs.x = x ;
tab->tabs.y = y ;
tab->tabs.row = row ;
}
x += w + SPACING ;
if (!query_only && !done)
tab->tabs.visible = 1;
}
if (debug_tabs > 1)
fprintf (stderr, "\n");
/* If there was only one row, increase the height by TABDELTA */
if( ++display_rows == 1 )
{
y = TABDELTA ;
if( !query_only )
for(i=num_children, childP=tw->composite.children;
--i >= 0 ; ++childP)
if( XtIsManaged(*childP) )
{
tab = (TabsConstraints) (*childP)->core.constraints ;
tab->tabs.y = y ;
}
}
row++;
y += tw->tabs.tab_height ;
}
else
display_rows = row = y = 0 ;
if( !query_only ) {
tw->tabs.tab_total = y ;
tw->tabs.numRows = display_rows ;
tw->tabs.realRows = row;
}
if (debug_tabs > 1 && (row > 1 || display_rows > 1))
fprintf (stderr, "tab: %d display rows, #children = %d,"
" total height %d, total rows %d%s.\n",
display_rows, num_children, y, row,
query_only ? " (query)" : "");
if( reply_height != NULL )
*reply_height = y ;
return display_rows ;
}
/* Find max preferred child size. Returned sizes include child
* border widths.
*/
static void
GetPreferredSizes(TabsWidget tw)
{
MaxChild(tw, NULL, 0,0) ;
}
/* Find max preferred child size and store in control widget.
* If except is non-null, don't ask that one.
*/
static void
MaxChild(TabsWidget tw, Widget except, Dimension cw, Dimension ch)
{
int i ;
Widget *childP = tw->composite.children ;
XtWidgetGeometry preferred ;
for(i=tw->composite.num_children; --i >=0; ++childP)
if( TabVisible (*childP) /*XtIsManaged(*childP)*/ && *childP != except )
{
(void) XtQueryGeometry(*childP, NULL, &preferred) ;
cw = Max(cw, preferred.width + preferred.border_width * 2 ) ;
ch = Max(ch, preferred.height + preferred.border_width * 2 ) ;
}
tw->tabs.max_cw = cw ;
tw->tabs.max_ch = ch ;
}
/* rotate row numbers to bring current widget to bottom row,
* compute y positions for all tabs
*/
static void
TabsShuffleRows(TabsWidget tw)
{
TabsConstraints tab ;
int move ;
int real_rows, display_rows ;
Widget *childP ;
Dimension th = tw->tabs.tab_height ;
Position bottom ;
int i ;
/* There must be a top widget. If not, assign one. */
if( tw->tabs.topWidget == NULL && tw->composite.children != NULL )
for(i=TabsNumChildren (tw), childP=tw->composite.children;
--i >= 0;
++childP)
if( XtIsManaged(*childP) ) {
tw->tabs.topWidget = *childP ;
break ;
}
if( tw->tabs.topWidget != NULL )
{
display_rows = tw->tabs.numRows ;
real_rows = tw->tabs.realRows ;
assert( display_rows <= real_rows ) ;
if( real_rows > 1 )
{
tab = (TabsConstraints) tw->tabs.topWidget->core.constraints ;
assert( tab != NULL ) ;
/* How far to move top row. The selected tab must be on
the bottom row of the *visible* rows. */
move = (real_rows + 1 - display_rows) - tab->tabs.row ;
if (move < 0)
move = real_rows - move;
bottom = tw->tabs.tab_total - th ;
for(i=tw->composite.num_children, childP=tw->composite.children;
--i >= 0;
++childP)
if( XtIsManaged(*childP) )
{
tab = (TabsConstraints) (*childP)->core.constraints ;
tab->tabs.row = (tab->tabs.row + move) % real_rows ;
tab->tabs.y = bottom - tab->tabs.row * th ;
tab->tabs.visible = (tab->tabs.row < display_rows);
}
}
}
}
/* Find preferred size. Ask children, find size of largest,
* add room for tabs & return. This can get a little involved,
* as we don't want to have too many rows of tabs; we may widen
* the widget to reduce # of rows.
*
* This function requires that max_cw, max_ch already be set.
*/
static int
PreferredSize(
TabsWidget tw,
Dimension *reply_width, /* total widget size */
Dimension *reply_height,
Dimension *reply_cw, /* child widget size */
Dimension *reply_ch)
{
Dimension cw,ch ; /* child width, height */
Dimension wid,hgt ;
Dimension rwid,rhgt ;
int nrow ;
wid = cw = tw->tabs.max_cw ;
hgt = ch = tw->tabs.max_ch ;
nrow = PreferredSize2(tw, wid,hgt, &rwid, &rhgt) ;
/* Check for absurd results (more than 2 rows, high aspect
* ratio). Try wider size if needed.
* TODO: make sure this terminates.
*/
if( nrow > 2 && rhgt > rwid )
{
Dimension w0, w1 ;
int maxloop = 20 ;
/* step 1: start doubling size until it's too big */
do {
w0 = wid ;
wid = Max(wid*2, wid+20) ;
nrow = PreferredSize2(tw, wid,hgt, &rwid,&rhgt) ;
} while( nrow > 2 && rhgt > rwid ) ;
w1 = wid ;
/* step 2: use Newton's method to find ideal size. Stop within
* 8 pixels.
*/
while( --maxloop > 0 && w1 > w0 + 8 )
{
wid = (w0+w1)/2 ;
nrow = PreferredSize2(tw, wid,hgt, &rwid,&rhgt) ;
if( nrow > 2 && rhgt > rwid )
w0 = wid ;
else
w1 = wid ;
}
wid = w1 ;
}
*reply_width = rwid ;
*reply_height = rhgt ;
if( reply_cw != NULL ) *reply_cw = cw ;
if( reply_ch != NULL ) *reply_ch = ch ;
return nrow ;
}
/* Find preferred size, given size of children. */
static int
PreferredSize2(
TabsWidget tw,
Dimension cw, /* child width, height */
Dimension ch,
Dimension *reply_width, /* total widget size */
Dimension *reply_height)
{
Dimension s = SHADWID ;
int ret;
/* make room for shadow frame */
cw += s*2 ;
ch += s*2 ;
ret = PreferredSize3(tw, cw, ch, reply_width, reply_height) ;
assert (*reply_width > 0 && *reply_height > 0);
return ret;
}
/* Find preferred size, given size of children+shadow. */
static int
PreferredSize3(
TabsWidget tw,
Dimension wid, /* child width, height */
Dimension hgt,
Dimension *reply_width, /* total widget size */
Dimension *reply_height)
{
Dimension th ; /* space used by tabs */
int nrows ;
if( tw->composite.num_children > 0 )
/* used to be wid, hgt not 0, 0 but that's obviously wrong
since TabLayout wants dimensions of control parent but
wid, hgt are dimensions of some child */
nrows = TabLayout(tw, 0, 0, &th, True) ;
else {
th = 0 ;
nrows = 0 ;
}
*reply_width = Max(wid, MIN_WID) ;
*reply_height = Max(th+hgt, MIN_HGT) ;
return nrows ;
}
static void
MakeSizeRequest(TabsWidget tw)
{
Widget w = (Widget)tw ;
XtWidgetGeometry request, reply ;
XtGeometryResult result ;
Dimension cw,ch ;
request.request_mode = CWWidth | CWHeight ;
PreferredSize(tw, &request.width, &request.height, &cw, &ch) ;
if( request.width == tw->core.width &&
request.height == tw->core.height )
return ;
result = XtMakeGeometryRequest(w, &request, &reply) ;
if( result == XtGeometryAlmost )
{
/* Bugger. Didn't get what we want, but were offered a
* compromise. If the width was too small, recompute
* based on the too-small width and try again.
* If the height was too small, make a wild-ass guess
* at a wider width and try again.
*/
if( reply.width < request.width && reply.height >= request.height )
{
Dimension s = SHADWID ;
ch += s*2 ;
PreferredSize3(tw, reply.width,ch, &request.width, &request.height);
result = XtMakeGeometryRequest(w, &request, &reply) ;
if( result == XtGeometryAlmost )
(void) XtMakeGeometryRequest(w, &reply, NULL) ;
}
else
(void) XtMakeGeometryRequest(w, &reply, NULL) ;
}
}
static void
getBitmapInfo(TabsWidget tw, TabsConstraints tab)
{
Window root ;
int x,y ;
unsigned int bw ;
if( tab->tabs.left_bitmap == None ||
!XGetGeometry(XtDisplay(tw), tab->tabs.left_bitmap, &root, &x, &y,
&tab->tabs.lbm_width, &tab->tabs.lbm_height,
&bw, &tab->tabs.lbm_depth) )
tab->tabs.lbm_width = tab->tabs.lbm_height = 0 ;
}
/* Code copied & modified from Gcs.c. This version has dynamic
* foreground.
*/
static void
TabsAllocFgGC(TabsWidget tw)
{
Widget w = (Widget) tw;
XGCValues values ;
values.background = tw->core.background_pixel;
values.font =
#ifdef HAVE_XFT_TABS
None;
#else
tw->tabs.font->fid;
#endif
values.line_style = LineOnOffDash;
values.line_style = LineSolid;
tw->tabs.foregroundGC =
XtAllocateGC(w, w->core.depth,
#ifndef HAVE_XFT_TABS
GCFont|
#endif
GCBackground|GCLineStyle,
&values,
GCForeground,
#ifdef HAVE_XFT_TABS
GCFont|
#endif
GCSubwindowMode|GCGraphicsExposures|GCDashOffset|
GCDashList|GCArcMode);
}
static void
TabsAllocGreyGC(TabsWidget tw)
{
Widget w = (Widget) tw;
XGCValues values ;
values.background = tw->core.background_pixel;
values.font =
#ifdef HAVE_XFT_TABS
None;
#else
tw->tabs.font->fid;
#endif
if (tw->tabs.be_nice_to_cmap || w->core.depth == 1)
{
values.fill_style = FillStippled;
tw->tabs.grey50 =
values.stipple = XmuCreateStippledPixmap(XtScreen(w), 1L, 0L, 1);
tw->tabs.greyGC =
XtAllocateGC(w, w->core.depth,
#ifndef HAVE_XFT_TABS
GCFont|
#endif
GCBackground|GCStipple|GCFillStyle, &values,
GCForeground,
#ifdef HAVE_XFT_TABS
GCFont|
#endif
GCSubwindowMode|GCGraphicsExposures|GCDashOffset|
GCDashList|GCArcMode);
}
else
{
tw->tabs.greyGC =
XtAllocateGC(w, w->core.depth,
#ifdef HAVE_XFT_TABS
0L,
#else
GCFont,
#endif
&values,
GCForeground,
#ifdef HAVE_XFT_TABS
GCFont|
#endif
GCBackground|GCSubwindowMode|GCGraphicsExposures|GCDashOffset|
GCDashList|GCArcMode);
}
}