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cpython-source-deps/generic/tixDiText.c
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/*
* tixDiText.c --
*
* This file implements one of the "Display Items" in the Tix library :
* Text display items.
*
* Copyright (c) 1993-1999 Ioi Kim Lam.
* Copyright (c) 2000-2001 Tix Project Group.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* $Id: tixDiText.c,v 1.7 2004/03/28 02:44:56 hobbs Exp $
*/
#include <tixPort.h>
#include <tixInt.h>
#include <tixDef.h>
/*
* If the item has a really small text, or no text at all, use
* this size. This makes the drawing of selection lines more sane.
*/
#define MIN_TEXT_WIDTH 2
#define MIN_TEXT_HEIGHT 2
/*----------------------------------------------------------------------
*
* Configuration options for Text Items
*
*----------------------------------------------------------------------
*/
static Tk_ConfigSpec textItemConfigSpecs[] = {
{TK_CONFIG_CUSTOM, "-itemtype", "itemType", "ItemType",
DEF_TEXTITEM_TYPE, Tk_Offset(TixTextItem, diTypePtr),
0, &tixConfigItemType},
{TK_CONFIG_CUSTOM, "-style", "textStyle", "TextStyle",
DEF_TEXTITEM_STYLE, Tk_Offset(TixTextItem, stylePtr),
TK_CONFIG_NULL_OK, &tixConfigItemStyle},
{TK_CONFIG_STRING, "-text", "text", "Text",
DEF_TEXTITEM_TEXT, Tk_Offset(TixTextItem, text),
TK_CONFIG_NULL_OK},
{TK_CONFIG_INT, "-underline", "underline", "Underline",
DEF_TEXTITEM_UNDERLINE, Tk_Offset(TixTextItem, underline), 0},
{TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
(char *) NULL, 0, 0}
};
/*----------------------------------------------------------------------
*
* Configuration options for Text Styles
*
*----------------------------------------------------------------------
*/
static Tk_ConfigSpec textStyleConfigSpecs[] = {
{TK_CONFIG_ANCHOR, "-anchor", "anchor", "Anchor",
DEF_TEXTSTYLE_ANCHOR, Tk_Offset(TixTextStyle, anchor), 0},
{TK_CONFIG_SYNONYM, "-bg", "background", (char *) NULL,
(char *) NULL, 0, 0},
#if 0
/* %bordercolor not used */
{TK_CONFIG_COLOR,"-bordercolor","borderColor","BorderColor",
DEF_TEXTSTYLE_BORDER_COLOR_COLOR, Tk_Offset(TixTextStyle, borderColor),
TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_COLOR,"-bordercolor","borderColor","BorderColor",
DEF_TEXTSTYLE_BORDER_COLOR_MONO, Tk_Offset(TixTextStyle, borderColor),
TK_CONFIG_MONO_ONLY},
#endif
{TK_CONFIG_SYNONYM, "-fg", "foreground", (char *) NULL,
(char *) NULL, 0, 0},
{TK_CONFIG_FONT, "-font", "font", "Font",
DEF_TEXTSTYLE_FONT, Tk_Offset(TixTextStyle, font), 0},
{TK_CONFIG_JUSTIFY, "-justify", "justify", "Justyfy",
DEF_TEXTSTYLE_JUSTIFY, Tk_Offset(TixTextStyle, justify),
TK_CONFIG_NULL_OK},
{TK_CONFIG_PIXELS, "-padx", "padX", "Pad",
DEF_TEXTSTYLE_PADX, Tk_Offset(TixTextStyle, pad[0]), 0},
{TK_CONFIG_PIXELS, "-pady", "padY", "Pad",
DEF_TEXTSTYLE_PADY, Tk_Offset(TixTextStyle, pad[1]), 0},
{TK_CONFIG_PIXELS, "-wraplength", "wrapLength", "WrapLength",
DEF_TEXTSTYLE_WLENGTH, Tk_Offset(TixTextStyle, wrapLength), 0},
/* The following is automatically generated */
{TK_CONFIG_COLOR,"-background","background","Background",
DEF_TEXTSTYLE_NORMAL_BG_COLOR,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_NORMAL].bg),
TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_COLOR,"-background","background","Background",
DEF_TEXTSTYLE_NORMAL_BG_MONO,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_NORMAL].bg),
TK_CONFIG_MONO_ONLY},
{TK_CONFIG_COLOR,"-foreground","foreground","Foreground",
DEF_TEXTSTYLE_NORMAL_FG_COLOR,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_NORMAL].fg),
TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_COLOR,"-foreground","foreground","Foreground",
DEF_TEXTSTYLE_NORMAL_FG_MONO,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_NORMAL].fg),
TK_CONFIG_MONO_ONLY},
{TK_CONFIG_COLOR,"-activebackground","activeBackground","ActiveBackground",
DEF_TEXTSTYLE_ACTIVE_BG_COLOR,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_ACTIVE].bg),
TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_COLOR,"-activebackground","activeBackground","ActiveBackground",
DEF_TEXTSTYLE_ACTIVE_BG_MONO,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_ACTIVE].bg),
TK_CONFIG_MONO_ONLY},
{TK_CONFIG_COLOR,"-activeforeground","activeForeground","ActiveForeground",
DEF_TEXTSTYLE_ACTIVE_FG_COLOR,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_ACTIVE].fg),
TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_COLOR,"-activeforeground","activeForeground","ActiveForeground",
DEF_TEXTSTYLE_ACTIVE_FG_MONO,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_ACTIVE].fg),
TK_CONFIG_MONO_ONLY},
{TK_CONFIG_COLOR,"-selectbackground","selectBackground","SelectBackground",
DEF_TEXTSTYLE_SELECTED_BG_COLOR,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_SELECTED].bg),
TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_COLOR,"-selectbackground","selectBackground","SelectBackground",
DEF_TEXTSTYLE_SELECTED_BG_MONO,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_SELECTED].bg),
TK_CONFIG_MONO_ONLY},
{TK_CONFIG_COLOR,"-selectforeground","selectForeground","SelectForeground",
DEF_TEXTSTYLE_SELECTED_FG_COLOR,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_SELECTED].fg),
TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_COLOR,"-selectforeground","selectForeground","SelectForeground",
DEF_TEXTSTYLE_SELECTED_FG_MONO,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_SELECTED].fg),
TK_CONFIG_MONO_ONLY},
{TK_CONFIG_COLOR,"-disabledbackground","disabledBackground","DisabledBackground",
DEF_TEXTSTYLE_DISABLED_BG_COLOR,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_DISABLED].bg),
TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_COLOR,"-disabledbackground","disabledBackground","DisabledBackground",
DEF_TEXTSTYLE_DISABLED_BG_MONO,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_DISABLED].bg),
TK_CONFIG_MONO_ONLY},
{TK_CONFIG_COLOR,"-disabledforeground","disabledForeground","DisabledForeground",
DEF_TEXTSTYLE_DISABLED_FG_COLOR,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_DISABLED].fg),
TK_CONFIG_COLOR_ONLY},
{TK_CONFIG_COLOR,"-disabledforeground","disabledForeground","DisabledForeground",
DEF_TEXTSTYLE_DISABLED_FG_MONO,
Tk_Offset(TixTextStyle,colors[TIX_DITEM_DISABLED].fg),
TK_CONFIG_MONO_ONLY},
{TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
(char *) NULL, 0, 0}
};
/*----------------------------------------------------------------------
* Forward declarations for procedures defined later in this file:
*----------------------------------------------------------------------
*/
static void Tix_TextItemCalculateSize _ANSI_ARGS_((
Tix_DItem * iPtr));
static char * Tix_TextItemComponent _ANSI_ARGS_((
Tix_DItem * iPtr, int x, int y));
static int Tix_TextItemConfigure _ANSI_ARGS_((
Tix_DItem * iPtr, int argc, CONST84 char ** argv,
int flags));
static Tix_DItem * Tix_TextItemCreate _ANSI_ARGS_((
Tix_DispData * ddPtr, Tix_DItemInfo * diTypePtr));
static void Tix_TextItemDisplay _ANSI_ARGS_((
Drawable drawable, Tix_DItem * iPtr,
int x, int y, int width, int height,
int xOffset, int yOffset, int flags));
static void Tix_TextItemFree _ANSI_ARGS_((
Tix_DItem * iPtr));
static void Tix_TextItemLostStyle _ANSI_ARGS_((
Tix_DItem * iPtr));
static void Tix_TextItemStyleChanged _ANSI_ARGS_((
Tix_DItem * iPtr));
static int Tix_TextStyleConfigure _ANSI_ARGS_((
Tix_DItemStyle* style, int argc, CONST84 char ** argv,
int flags));
static Tix_DItemStyle * Tix_TextStyleCreate _ANSI_ARGS_((
Tcl_Interp *interp, Tk_Window tkwin,
Tix_DItemInfo * diTypePtr, char * name));
static void Tix_TextStyleFree _ANSI_ARGS_((
Tix_DItemStyle* style));
static void Tix_TextStyleSetTemplate _ANSI_ARGS_((
Tix_DItemStyle* style,
Tix_StyleTemplate * tmplPtr));
Tix_DItemInfo tix_TextItemType = {
"text", /* type */
TIX_DITEM_TEXT,
Tix_TextItemCreate, /* createProc */
Tix_TextItemConfigure,
Tix_TextItemCalculateSize,
Tix_TextItemComponent,
Tix_TextItemDisplay,
Tix_TextItemFree,
Tix_TextItemStyleChanged,
Tix_TextItemLostStyle,
Tix_TextStyleCreate,
Tix_TextStyleConfigure,
Tix_TextStyleFree,
Tix_TextStyleSetTemplate,
textItemConfigSpecs,
textStyleConfigSpecs,
NULL, /*next */
};
/*----------------------------------------------------------------------
* Tix_TextItemCreate --
*
*
*----------------------------------------------------------------------
*/
static Tix_DItem * Tix_TextItemCreate(ddPtr, diTypePtr)
Tix_DispData * ddPtr;
Tix_DItemInfo * diTypePtr;
{
TixTextItem * itPtr;
itPtr = (TixTextItem*) ckalloc(sizeof(TixTextItem));
itPtr->diTypePtr = &tix_TextItemType;
itPtr->ddPtr = ddPtr;
itPtr->stylePtr = (TixTextStyle*)TixGetDefaultDItemStyle(
itPtr->ddPtr, &tix_TextItemType,
(Tix_DItem*)itPtr, NULL);
itPtr->clientData = 0;
itPtr->size[0] = 0;
itPtr->size[1] = 0;
itPtr->selX = 0;
itPtr->selY = 0;
itPtr->selW = 0;
itPtr->selH = 0;
itPtr->numChars = 0;
itPtr->text = NULL;
itPtr->textW = 0;
itPtr->textH = 0;
itPtr->underline = -1;
return (Tix_DItem *)itPtr;
}
static void Tix_TextItemFree(iPtr)
Tix_DItem * iPtr;
{
TixTextItem * itPtr = (TixTextItem *) iPtr;
if (itPtr->stylePtr) {
TixDItemStyleFree(iPtr, (Tix_DItemStyle*)itPtr->stylePtr);
}
Tk_FreeOptions(textItemConfigSpecs, (char *)itPtr,
itPtr->ddPtr->display, 0);
ckfree((char*)itPtr);
}
static int
Tix_TextItemConfigure(iPtr, argc, argv, flags)
Tix_DItem * iPtr;
int argc;
CONST84 char ** argv;
int flags;
{
TixTextItem * itPtr = (TixTextItem *) iPtr;
TixTextStyle * oldStyle = itPtr->stylePtr;
if (Tk_ConfigureWidget(itPtr->ddPtr->interp, itPtr->ddPtr->tkwin,
textItemConfigSpecs,
argc, argv, (char *)itPtr, flags) != TCL_OK) {
return TCL_ERROR;
}
if (itPtr->stylePtr == NULL) {
itPtr->stylePtr = (TixTextStyle*)TixGetDefaultDItemStyle(
itPtr->ddPtr, &tix_TextItemType, iPtr, NULL);
}
if (oldStyle != NULL && itPtr->stylePtr != oldStyle) {
Tix_TextItemStyleChanged(iPtr);
}
else {
Tix_TextItemCalculateSize((Tix_DItem*)itPtr);
}
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* Tix_TextItemDisplay --
*
* Display a text item. {x, y, width, height} specifies a region
* for to display this item in. {xOffset, yOffset} gives the
* offset of the top-left corner of the text item relative to
* the top-left corder of the region.
*
* Background and foreground of the item are displayed according
* to the flags parameter.
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static void
Tix_TextItemDisplay(drawable, iPtr, x, y, width, height, xOffset, yOffset,
flags)
Drawable drawable;
Tix_DItem * iPtr;
int x;
int y;
int width;
int height;
int xOffset;
int yOffset;
int flags;
{
TixTextItem *itPtr = (TixTextItem *)iPtr;
Display * display = iPtr->base.ddPtr->display;
TixpSubRegion subReg;
GC foreGC;
if ((width <= 0) || (height <= 0)) {
return;
}
TixGetColorDItemGC(iPtr, NULL, &foreGC, NULL, flags);
TixpStartSubRegionDraw(display, drawable, foreGC,
&subReg, 0, 0, x, y, width, height,
itPtr->size[0] + xOffset, itPtr->size[1] + yOffset);
Tix_DItemDrawBackground(drawable, &subReg, iPtr, x, y, width, height,
xOffset, yOffset, flags);
/*
* Calculate the location of the text according to anchor settings.
*/
TixDItemGetAnchor(iPtr->base.stylePtr->anchor, x, y, width, height,
iPtr->base.size[0], iPtr->base.size[1], &x, &y);
if (foreGC != None && itPtr->text != NULL) {
/*
* Draw the text
*/
x += itPtr->stylePtr->pad[0] + xOffset;
y += itPtr->stylePtr->pad[1] + yOffset;
TixpSubRegDisplayText(display, drawable, foreGC,
&subReg, itPtr->stylePtr->font, itPtr->text,
itPtr->numChars, x, y, itPtr->textW, itPtr->stylePtr->justify,
itPtr->underline);
}
TixpEndSubRegionDraw(display, drawable, foreGC,
&subReg);
}
/*
*----------------------------------------------------------------------
*
* Tix_TextItemComponent --
*
* Identifies the sub-component of this text item at the given
* {x, y} location. Text items are not divided into sub-components
* so the string "body" is always returned.
*
* The returned string is statically allocated.
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static char *
Tix_TextItemComponent(iPtr, x, y)
Tix_DItem * iPtr;
int x;
int y;
{
static char * body = "body";
return body;
}
static void
Tix_TextItemCalculateSize(iPtr)
Tix_DItem * iPtr;
{
TixTextItem *itPtr = (TixTextItem *)iPtr;
char * text = itPtr->text;
if (text == NULL || *text == '\0') {
/*
* Use one space character so that the height of the item
* would be the same as a regular small item, and the width
* of the item won't be too tiny.
*/
text = " ";
}
itPtr->numChars = -1;
TixComputeTextGeometry(itPtr->stylePtr->font, text, -1,
itPtr->stylePtr->wrapLength, &itPtr->textW, &itPtr->textH);
itPtr->size[0] = itPtr->textW;
itPtr->size[1] = itPtr->textH;
itPtr->size[0] += 2*itPtr->stylePtr->pad[0];
itPtr->size[1] += 2*itPtr->stylePtr->pad[1];
itPtr->selX = 0;
itPtr->selY = 0;
itPtr->selW = itPtr->size[0];
itPtr->selH = itPtr->size[1];
}
static void
Tix_TextItemStyleChanged(iPtr)
Tix_DItem * iPtr;
{
TixTextItem *itPtr = (TixTextItem *)iPtr;
if (itPtr->stylePtr == NULL) {
/* Maybe we haven't set the style to default style yet */
return;
}
Tix_TextItemCalculateSize(iPtr);
if (itPtr->ddPtr->sizeChangedProc != NULL) {
itPtr->ddPtr->sizeChangedProc(iPtr);
}
}
static void
Tix_TextItemLostStyle(iPtr)
Tix_DItem * iPtr;
{
TixTextItem *itPtr = (TixTextItem *)iPtr;
itPtr->stylePtr = (TixTextStyle*)TixGetDefaultDItemStyle(
itPtr->ddPtr, &tix_TextItemType, iPtr, NULL);
Tix_TextItemStyleChanged(iPtr);
}
/*----------------------------------------------------------------------
*
*
* Display styles
*
*
*----------------------------------------------------------------------
*/
static Tix_DItemStyle *
Tix_TextStyleCreate(interp, tkwin, diTypePtr, name)
Tcl_Interp * interp;
Tk_Window tkwin;
char * name;
Tix_DItemInfo * diTypePtr;
{
TixTextStyle * stylePtr = (TixTextStyle *)ckalloc(sizeof(TixTextStyle));
stylePtr->font = NULL;
stylePtr->justify = TK_JUSTIFY_LEFT;
stylePtr->wrapLength = 0;
return (Tix_DItemStyle *)stylePtr;
}
static int
Tix_TextStyleConfigure(style, argc, argv, flags)
Tix_DItemStyle *style;
int argc;
CONST84 char ** argv;
int flags;
{
TixTextStyle * stylePtr = (TixTextStyle *)style;
XGCValues gcValues;
GC newGC;
int i, isNew;
if (stylePtr->font == NULL) {
isNew = 1;
} else {
isNew = 0;
}
/*
* TODO: gap, wrapLength, etc changes: need to call TixDItemStyleChanged
*/
if (!(flags &TIX_DONT_CALL_CONFIG)) {
if (Tk_ConfigureWidget(stylePtr->interp, stylePtr->tkwin,
textStyleConfigSpecs,
argc, argv, (char *)stylePtr, flags) != TCL_OK) {
return TCL_ERROR;
}
}
gcValues.font = TixFontId(stylePtr->font);
gcValues.graphics_exposures = False;
for (i=0; i<4; i++) {
/*
* Foreground GC
*/
gcValues.background = stylePtr->colors[i].bg->pixel;
gcValues.foreground = stylePtr->colors[i].fg->pixel;
newGC = Tk_GetGC(stylePtr->tkwin,
GCFont|GCForeground|GCBackground|GCGraphicsExposures, &gcValues);
if (stylePtr->colors[i].foreGC != None) {
Tk_FreeGC(Tk_Display(stylePtr->tkwin),
stylePtr->colors[i].foreGC);
}
stylePtr->colors[i].foreGC = newGC;
/*
* Background GC
*/
gcValues.foreground = stylePtr->colors[i].bg->pixel;
newGC = Tk_GetGC(stylePtr->tkwin,
GCFont|GCForeground|GCGraphicsExposures, &gcValues);
if (stylePtr->colors[i].backGC != None) {
Tk_FreeGC(Tk_Display(stylePtr->tkwin),
stylePtr->colors[i].backGC);
}
stylePtr->colors[i].backGC = newGC;
/*
* Anchor GC
*/
newGC = Tix_GetAnchorGC(stylePtr->tkwin,
stylePtr->colors[i].bg);
if (stylePtr->colors[i].anchorGC != None) {
Tk_FreeGC(Tk_Display(stylePtr->tkwin),
stylePtr->colors[i].anchorGC);
}
stylePtr->colors[i].anchorGC = newGC;
}
if (!isNew) {
TixDItemStyleChanged(stylePtr->diTypePtr, (Tix_DItemStyle *)stylePtr);
}
return TCL_OK;
}
static void
Tix_TextStyleFree(style)
Tix_DItemStyle *style;
{
TixTextStyle * stylePtr = (TixTextStyle *)style;
Tk_FreeOptions(textStyleConfigSpecs, (char *)stylePtr,
Tk_Display(stylePtr->tkwin), 0);
ckfree((char *)stylePtr);
}
static int bg_flags [4] = {
TIX_DITEM_NORMAL_BG,
TIX_DITEM_ACTIVE_BG,
TIX_DITEM_SELECTED_BG,
TIX_DITEM_DISABLED_BG
};
static int fg_flags [4] = {
TIX_DITEM_NORMAL_FG,
TIX_DITEM_ACTIVE_FG,
TIX_DITEM_SELECTED_FG,
TIX_DITEM_DISABLED_FG
};
static void
Tix_TextStyleSetTemplate(style, tmplPtr)
Tix_DItemStyle* style;
Tix_StyleTemplate * tmplPtr;
{
TixTextStyle * stylePtr = (TixTextStyle *)style;
int i;
if (tmplPtr->flags & TIX_DITEM_FONT) {
if (stylePtr->font != NULL) {
TixFreeFont(stylePtr->font);
}
stylePtr->font = TixGetFont(
stylePtr->interp, stylePtr->tkwin,
TixNameOfFont(tmplPtr->font));
}
if (tmplPtr->flags & TIX_DITEM_PADX) {
stylePtr->pad[0] = tmplPtr->pad[0];
}
if (tmplPtr->flags & TIX_DITEM_PADY) {
stylePtr->pad[1] = tmplPtr->pad[1];
}
for (i=0; i<4; i++) {
if (tmplPtr->flags & bg_flags[i]) {
if (stylePtr->colors[i].bg != NULL) {
Tk_FreeColor(stylePtr->colors[i].bg);
}
stylePtr->colors[i].bg = Tk_GetColor(
stylePtr->interp, stylePtr->tkwin,
Tk_NameOfColor(tmplPtr->colors[i].bg));
}
}
for (i=0; i<4; i++) {
if (tmplPtr->flags & fg_flags[i]) {
if (stylePtr->colors[i].fg != NULL) {
Tk_FreeColor(stylePtr->colors[i].fg);
}
stylePtr->colors[i].fg = Tk_GetColor(
stylePtr->interp, stylePtr->tkwin,
Tk_NameOfColor(tmplPtr->colors[i].fg));
}
}
Tix_TextStyleConfigure(style, 0, 0, TIX_DONT_CALL_CONFIG);
}