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gecko-dev/lib/layout/layspan.c

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C
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifdef DOM
#include "xp.h"
#include "pa_parse.h"
#include "layout.h"
#include "laylayer.h"
#include "laystyle.h"
#include "libmocha.h"
#include "stystruc.h"
#include "stystack.h"
#include "layers.h"
/* Initial attempt at DOM by letting JS set style of SPAN contents */
void lo_SetColor( LO_Element *ele, LO_Color *color, lo_DocState *state,
Bool background);
static void lo_SetFontFamily( MWContext *context, LO_Element *ele, char *family);
static void lo_SetFontWeight( MWContext *context, LO_Element *ele, char *weight);
static void lo_SetFontSlant( MWContext *context, LO_Element *ele, char *weight);
static void lo_SetFontSize( MWContext *context, LO_Element *ele, int32 size);
/* Public functions */
JSObject *
LO_GetMochaObjectOfParentSpan( LO_Element *ele)
{
LO_SpanStruct *span;
lo_NameList *name_rec;
JSObject *obj = NULL;
if (LO_IsWithinSpan( ele ))
{
/* Go back in the layout element list until we find a SPAN element */
span = lo_FindParentSpan(ele);
if ( span != NULL )
{
name_rec = (lo_NameList *) span->name_rec;
if (name_rec != NULL)
obj = name_rec->mocha_object;
}
}
return obj;
}
/* Set the color of all layout elements contained within the span */
void LO_SetSpanColor(MWContext* context, void *span, LO_Color *color)
{
lo_NameList *name_rec = (lo_NameList *)span;
LO_SpanStruct *parent_span = lo_FindParentSpan(name_rec->element);
LO_Element *ele;
ele = parent_span->lo_any.next;
while (ele != NULL && ele->lo_any.type != LO_SPAN)
{
#if 0
lo_SetColor(ele, color, FALSE);
#endif
ele = ele->lo_any.next;
}
}
/* Set the background color of all layout elements contained within the span */
void LO_SetSpanBackground(MWContext* context, void *span, LO_Color *color)
{
lo_NameList *name_rec = (lo_NameList *)span;
LO_SpanStruct *parent_span = lo_FindParentSpan(name_rec->element);
LO_Element *ele;
ele = parent_span->lo_any.next;
while (ele != NULL && ele->lo_any.type != LO_SPAN)
{
#if 0
lo_SetColor(ele, color, TRUE);
#endif
ele = ele->lo_any.next;
}
}
/* Set the font family (Arial, Helvetica, Times) of all the layout
elements contained within the span */
void
LO_SetSpanFontFamily(MWContext* context, void *span, char *family)
{
lo_NameList *name_rec = (lo_NameList *)span;
LO_SpanStruct *parent_span = lo_FindParentSpan(name_rec->element);
LO_Element *ele;
ele = parent_span->lo_any.next;
while (ele != NULL && ele->lo_any.type != LO_SPAN)
{
lo_SetFontFamily(context, ele, family);
ele = ele->lo_any.next;
}
}
/* Set the font weight (medium, bold, heavy, etc.) of all the layout
elements contained within the span */
void
LO_SetSpanFontWeight(MWContext* context, void *span, char *weight)
{
lo_NameList *name_rec = (lo_NameList *)span;
LO_SpanStruct *parent_span = lo_FindParentSpan(name_rec->element);
LO_Element *ele;
ele = parent_span->lo_any.next;
while (ele != NULL && ele->lo_any.type != LO_SPAN)
{
lo_SetFontWeight(context, ele, weight);
ele = ele->lo_any.next;
}
}
/* Set the font size (in points) of all the layout elements contained
within the span */
void
LO_SetSpanFontSize(MWContext* context, void *span, int32 size)
{
lo_NameList *name_rec = (lo_NameList *)span;
LO_SpanStruct *parent_span = lo_FindParentSpan(name_rec->element);
LO_Element *ele;
ele = parent_span->lo_any.next;
while (ele != NULL && ele->lo_any.type != LO_SPAN)
{
lo_SetFontSize(context, ele, size);
ele = ele->lo_any.next;
}
}
/* Set the font slant (in points) of all the layout elements contained
within the span */
void
LO_SetSpanFontSlant(MWContext* context, void *span, char *slant)
{
lo_NameList *name_rec = (lo_NameList *)span;
LO_SpanStruct *parent_span = lo_FindParentSpan(name_rec->element);
LO_Element *ele;
ele = parent_span->lo_any.next;
while (ele != NULL && ele->lo_any.type != LO_SPAN)
{
lo_SetFontSlant(context, ele, slant);
ele = ele->lo_any.next;
}
}
/* Functions internal to layout */
LO_SpanStruct *
lo_FindParentSpan( LO_Element *ele )
{
while (ele != NULL && ele->lo_any.type != LO_SPAN)
ele = ele->lo_any.prev;
return (LO_SpanStruct *) ele;
}
#define GET_UNSHARED_TEXT_ATTR(new, old) \
PR_BEGIN_MACRO \
if ((old)->refcnt != 1) { \
(new) = lo_NewCopyTextAttr(state, (old)); \
(old)->refcnt--; \
} else { \
(new) = (old); \
} \
PR_END_MACRO
void lo_SetColor( LO_Element *ele, LO_Color *color, lo_DocState *state,
Bool background)
{
LO_TextAttr *new_attr;
switch (ele->lo_any.type)
{
case LO_TEXTBLOCK:
GET_UNSHARED_TEXT_ATTR(new_attr, ele->lo_textBlock.text_attr);
ele->lo_textBlock.text_attr = new_attr;
break;
case LO_TEXT:
GET_UNSHARED_TEXT_ATTR(new_attr, ele->lo_text.text_attr);
ele->lo_text.text_attr = new_attr;
break;
case LO_BULLET:
GET_UNSHARED_TEXT_ATTR(new_attr, ele->lo_bullet.text_attr);
ele->lo_bullet.text_attr = new_attr;
break;
default:
return;
}
if (background)
{
new_attr->bg = *color;
new_attr->no_background = FALSE;
}
else
{
new_attr->fg = *color;
}
}
/* Functions internal to this file */
static void
lo_SetFontFamily( MWContext *context,
LO_Element *ele,
char *new_face)
{
LO_TextAttr *text_attr;
/* if the point size is different, tell the FE to release it's data,
set the point_size to the new value, and then have the FE
recompute it's information. */
switch (ele->lo_any.type)
{
case LO_TEXTBLOCK:
text_attr = ele->lo_textBlock.text_attr;
break;
case LO_TEXT:
text_attr = ele->lo_text.text_attr;
break;
case LO_BULLET:
text_attr = ele->lo_bullet.text_attr;
break;
default:
/* we don't mess with any other type of element */
return;
}
if (ele->lo_any.type == LO_TEXT)
{
LO_TextInfo text_info;
LO_TextStruct tmp_text;
memset (&tmp_text, 0, sizeof (tmp_text));
FE_ReleaseTextAttrFeData(context, text_attr);
/* XP_FREE(text_attr->font_face); */
text_attr->font_face = strdup(new_face);
tmp_text = ele->lo_text;
FE_GetTextInfo(context, &tmp_text, &text_info);
}
else if (ele->lo_any.type == LO_TEXTBLOCK)
{
/* XP_FREE(text_attr->font_face); */
text_attr->font_face = strdup(new_face);
}
}
static void
lo_SetFontWeight( MWContext *context,
LO_Element *ele,
char *weight)
{
LO_TextAttr *text_attr;
int new_weight = atoi(weight);
/* if the point size is different, tell the FE to release it's data,
set the point_size to the new value, and then have the FE
recompute it's information. */
switch (ele->lo_any.type)
{
case LO_TEXTBLOCK:
text_attr = ele->lo_textBlock.text_attr;
break;
case LO_TEXT:
text_attr = ele->lo_text.text_attr;
break;
case LO_BULLET:
text_attr = ele->lo_bullet.text_attr;
break;
default:
/* we don't mess with any other type of element */
return;
}
if (ele->lo_any.type == LO_TEXT)
{
LO_TextInfo text_info;
LO_TextStruct tmp_text;
memset (&tmp_text, 0, sizeof (tmp_text));
FE_ReleaseTextAttrFeData(context, text_attr);
text_attr->font_weight = new_weight;
if(text_attr->font_weight > 900)
text_attr->font_weight = 900;
tmp_text = ele->lo_text;
FE_GetTextInfo(context, &tmp_text, &text_info);
}
else if (ele->lo_any.type == LO_TEXTBLOCK)
{
text_attr->font_weight = new_weight;
if (text_attr->font_weight > 900)
text_attr->font_weight = 900;
}
}
static void
lo_SetFontSlant( MWContext *context,
LO_Element *ele,
char *slant)
{
LO_TextAttr *text_attr;
int flag;
/* if the point size is different, tell the FE to release it's data,
set the point_size to the new value, and then have the FE
recompute it's information. */
switch (ele->lo_any.type)
{
case LO_TEXTBLOCK:
text_attr = ele->lo_textBlock.text_attr;
break;
case LO_TEXT:
text_attr = ele->lo_text.text_attr;
break;
case LO_BULLET:
text_attr = ele->lo_bullet.text_attr;
break;
default:
/* we don't mess with any other type of element */
return;
}
if (!strcmp(slant, "italic"))
flag = LO_FONT_ITALIC;
else if (!strcmp(slant, "fixed"))
flag = LO_FONT_FIXED;
if (ele->lo_any.type == LO_TEXTBLOCK
&& !text_attr->fontmask & flag)
{
LO_TextInfo text_info;
LO_TextStruct tmp_text;
memset (&tmp_text, 0, sizeof (tmp_text));
FE_ReleaseTextAttrFeData(context, text_attr);
text_attr->fontmask |= flag;
tmp_text = ele->lo_text;
FE_GetTextInfo(context, &tmp_text, &text_info);
}
}
static void
lo_SetFontSize( MWContext *context,
LO_Element *ele,
int32 new_size)
{
LO_TextAttr *text_attr;
/* if the point size is different, tell the FE to release it's data,
set the point_size to the new value, and then have the FE
recompute it's information. */
switch (ele->lo_any.type)
{
case LO_TEXTBLOCK:
text_attr = ele->lo_textBlock.text_attr;
break;
case LO_TEXT:
text_attr = ele->lo_text.text_attr;
break;
case LO_BULLET:
text_attr = ele->lo_bullet.text_attr;
break;
default:
/* we don't mess with any other type of element */
return;
}
if (ele->lo_any.type == LO_TEXT)
{
LO_TextInfo text_info;
LO_TextStruct tmp_text;
memset (&tmp_text, 0, sizeof (tmp_text));
FE_ReleaseTextAttrFeData(context, text_attr);
text_attr->point_size = new_size;
tmp_text = ele->lo_text;
FE_GetTextInfo(context, &tmp_text, &text_info);
}
else if (ele->lo_any.type == LO_TEXTBLOCK)
{
text_attr->point_size = new_size;
}
}
#endif
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