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gecko-dev/lib/layout/layutil.c

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/* -*- Mode: C++; tab-width: 8; 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.
*/
#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"
#ifdef NSPR20
#ifdef XP_MAC
#include "prpriv.h"
#else
#include "private/prpriv.h" /* for PR_NewNamedMonitor */
#endif
#endif /* NSPR20 */
#include "intl_csi.h"
#ifdef EDITOR
#include "edt.h"
#endif
#ifdef PROFILE
#pragma profile on
#endif
#ifdef XP_WIN16
#define SIZE_LIMIT 32000
#endif /* XP_WIN16 */
#define FONT_FACE_INC 10
#define FONT_FACE_MAX 1000
#ifdef DOM
static void lo_SetInSpanAttribute( LO_Element *ele );
#endif
void
lo_GetElementBbox(LO_Element *element, XP_Rect *rect)
{
rect->left = element->lo_any.x + element->lo_any.x_offset;
rect->top = element->lo_any.y + element->lo_any.y_offset;
rect->right = rect->left + element->lo_any.width;
rect->bottom = rect->top + element->lo_any.height;
switch(element->type)
{
case LO_IMAGE:
{
LO_ImageStruct *image = &element->lo_image;
rect->right += 2 * (image->border_width + image->border_horiz_space);
rect->bottom += 2 * (image->border_width + image->border_vert_space);
}
break;
case LO_SUBDOC:
{
LO_SubDocStruct *subdoc = &element->lo_subdoc;
rect->right += 2 * (subdoc->border_width + subdoc->border_horiz_space);
rect->bottom += 2 * (subdoc->border_width + subdoc->border_vert_space);
}
break;
case LO_TABLE:
{
LO_TableStruct *table = &element->lo_table;
rect->right += 2 * (table->border_width + table->border_horiz_space);
rect->bottom += 2 * (table->border_width + table->border_vert_space);
}
break;
case LO_CELL:
{
LO_CellStruct *cell = &element->lo_cell;
rect->right += 2 * (cell->border_width + cell->border_horiz_space);
rect->bottom += 2 * (cell->border_width + cell->border_vert_space);
}
break;
case LO_EMBED:
{
LO_EmbedStruct *embed = &element->lo_embed;
rect->right += 2 * (embed->objTag.border_width + embed->objTag.border_horiz_space);
rect->bottom += 2 * (embed->objTag.border_width + embed->objTag.border_vert_space);
}
break;
case LO_BUILTIN:
{
LO_BuiltinStruct *builtin = &element->lo_builtin;
rect->right += 2 * (builtin->border_width + builtin->border_horiz_space);
rect->bottom += 2 * (builtin->border_width + builtin->border_vert_space);
}
break;
#ifdef JAVA
case LO_JAVA:
{
LO_JavaAppStruct *java = &element->lo_java;
rect->right += 2 * (java->objTag.border_width + java->objTag.border_horiz_space);
rect->bottom += 2 * (java->objTag.border_width + java->objTag.border_vert_space);
}
break;
#endif
default:
break;
}
}
void
lo_RefreshElement(LO_Element *element, CL_Layer *layer, Bool update_now)
{
XP_Rect rect;
int32 x_offset, y_offset;
CL_Compositor *compositor = CL_GetLayerCompositor(layer);
lo_GetElementBbox(element, &rect);
lo_GetLayerXYShift(layer, &x_offset, &y_offset);
XP_OffsetRect(&rect, -x_offset, -y_offset);
CL_UpdateLayerRect(compositor, layer, &rect, (PRBool)update_now);
}
/* Given a layout element, retrieve its anchor information. */
LO_AnchorData *
lo_GetElementAnchor(LO_Element *element)
{
switch(element->type)
{
case LO_TEXT:
return element->lo_text.anchor_href;
case LO_IMAGE:
return element->lo_image.anchor_href;
case LO_TABLE:
return element->lo_table.anchor_href;
case LO_SUBDOC:
return element->lo_subdoc.anchor_href;
case LO_LINEFEED:
return element->lo_linefeed.anchor_href;
default:
return NULL;
}
}
/* Return an element's foreground color */
void
lo_GetElementFGColor(LO_Element *element, LO_Color *color)
{
switch (element->type)
{
case LO_TEXT:
color->red = element->lo_text.text_attr->fg.red;
color->green = element->lo_text.text_attr->fg.green;
color->blue = element->lo_text.text_attr->fg.blue;
break;
case LO_IMAGE:
color->red = element->lo_image.text_attr->fg.red;
color->green = element->lo_image.text_attr->fg.green;
color->blue = element->lo_image.text_attr->fg.blue;
break;
case LO_SUBDOC:
color->red = element->lo_subdoc.text_attr->fg.red;
color->green = element->lo_subdoc.text_attr->fg.green;
color->blue = element->lo_subdoc.text_attr->fg.blue;
break;
default:
XP_ASSERT(0); /* Not implemented */
break;
}
}
/* Set an element's foreground color */
void
lo_SetElementFGColor(LO_Element *element, LO_Color *color)
{
switch (element->type)
{
case LO_TEXT:
element->lo_text.text_attr->fg.red = color->red;
element->lo_text.text_attr->fg.green = color->green;
element->lo_text.text_attr->fg.blue = color->blue;
break;
case LO_IMAGE:
element->lo_image.text_attr->fg.red = color->red;
element->lo_image.text_attr->fg.green = color->green;
element->lo_image.text_attr->fg.blue = color->blue;
break;
case LO_SUBDOC:
element->lo_subdoc.text_attr->fg.red = color->red;
element->lo_subdoc.text_attr->fg.green = color->green;
element->lo_subdoc.text_attr->fg.blue = color->blue;
break;
default:
XP_ASSERT(0); /* Not implemented */
break;
}
}
void
lo_ShiftElementList(LO_Element *e_list, int32 dx, int32 dy)
{
LO_Element *eptr;
if (e_list == NULL)
{
return;
}
eptr = e_list;
while (eptr != NULL)
{
eptr->lo_any.x += dx;
eptr->lo_any.y += dy;
if (eptr->type == LO_CELL)
{
lo_ShiftCell((LO_CellStruct *)eptr, dx, dy);
}
eptr = eptr->lo_any.next;
}
}
NET_ReloadMethod
LO_GetReloadMethod(MWContext *context)
{
int32 doc_id;
lo_TopState *top_state;
lo_DocState *state;
/*
* Get the unique document ID, and retreive this
* documents layout state.
*/
doc_id = XP_DOCID(context);
top_state = lo_FetchTopState(doc_id);
if ((top_state == NULL)||(top_state->doc_state == NULL))
{
return NET_NORMAL_RELOAD;
}
state = top_state->doc_state;
return (FORCE_RELOAD_FLAG(state->top_state));
}
void
LO_InvalidateFontData(MWContext *context)
{
int32 i, doc_id;
lo_TopState *top_state;
lo_DocState *state;
LO_TextAttr **text_attr_hash;
LO_TextAttr *attr_ptr;
/*
* Get the unique document ID, and retreive this
* documents layout state.
*/
doc_id = XP_DOCID(context);
top_state = lo_FetchTopState(doc_id);
if ((top_state == NULL)||(top_state->doc_state == NULL))
{
return;
}
state = top_state->doc_state;
if (state->top_state->text_attr_hash == NULL)
{
return;
}
XP_LOCK_BLOCK(text_attr_hash, LO_TextAttr **,
state->top_state->text_attr_hash);
for (i=0; i < FONT_HASH_SIZE; i++)
{
attr_ptr = text_attr_hash[i];
while (attr_ptr != NULL)
{
if (attr_ptr->FE_Data != NULL)
{
FE_ReleaseTextAttrFeData(context, attr_ptr);
}
attr_ptr->FE_Data = NULL;
attr_ptr = attr_ptr->next;
}
}
}
static char *
lo_find_face_in_array(char **face_list, intn len, char *face)
{
intn i;
char *the_face;
if (face == NULL)
{
return(NULL);
}
the_face = NULL;
for (i=0; i<len; i++)
{
if ((face_list[i] != NULL)&&
(XP_STRCMP(face, face_list[i]) == 0))
{
the_face = face_list[i];
break;
}
}
return(the_face);
}
Bool
lo_EvalTrueOrFalse(char *str, Bool default_val)
{
Bool ret_val;
ret_val = default_val;
if (str == NULL)
{
return(ret_val);
}
if (pa_TagEqual("true", str))
{
ret_val = TRUE;
}
else if (pa_TagEqual("yes", str))
{
ret_val = TRUE;
}
else if (pa_TagEqual("no", str))
{
ret_val = FALSE;
}
else if (pa_TagEqual("false", str))
{
ret_val = FALSE;
}
return(ret_val);
}
char *
lo_FetchFontFace(MWContext *context, lo_DocState *state, char *face)
{
char **face_list;
char *new_face;
/*
* If this is our first addition, allocate the array.
*/
if (state->top_state->font_face_array == NULL)
{
PA_Block buff;
buff = PA_ALLOC(FONT_FACE_INC * sizeof(char *));
if (buff == NULL)
{
state->top_state->out_of_memory = TRUE;
return(NULL);
}
state->top_state->font_face_array = buff;
state->top_state->font_face_array_size = FONT_FACE_INC;
state->top_state->font_face_array_len = 0;
}
/*
* Else if the list is full, grow the array.
*/
else if (state->top_state->font_face_array_len >=
state->top_state->font_face_array_size)
{
PA_Block buff;
intn new_size;
if (state->top_state->font_face_array_size >= FONT_FACE_MAX)
{
return(NULL);
}
new_size = state->top_state->font_face_array_size +
FONT_FACE_INC;
if (new_size > FONT_FACE_MAX)
{
new_size = FONT_FACE_MAX;
}
buff = XP_REALLOC_BLOCK(state->top_state->font_face_array,
(new_size * sizeof(char *)));
if (buff == NULL)
{
state->top_state->out_of_memory = TRUE;
return(NULL);
}
state->top_state->font_face_array = buff;
state->top_state->font_face_array_size = new_size;
}
PA_LOCK(face_list, char **, state->top_state->font_face_array);
new_face = lo_find_face_in_array(face_list,
state->top_state->font_face_array_len, face);
if (new_face == NULL)
{
char *str;
str = XP_STRDUP(face);
if (str == NULL)
{
PA_UNLOCK(state->top_state->font_face_array);
state->top_state->out_of_memory = TRUE;
return(NULL);
}
face_list[state->top_state->font_face_array_len] = str;
state->top_state->font_face_array_len++;
new_face = str;
}
PA_UNLOCK(state->top_state->font_face_array);
return(new_face);
}
Bool
lo_IsValidTarget(char *target)
{
if (target == NULL)
{
return(FALSE);
}
if ((XP_IS_ALPHA(target[0]) != FALSE)||
(XP_IS_DIGIT(target[0]) != FALSE)||
(target[0] == '_'))
{
return(TRUE);
}
return(FALSE);
}
int32
lo_StripTextNewlines(char *text, int32 text_len)
{
char *from_ptr;
char *to_ptr;
int32 len;
if ((text == NULL)||(text_len < 1))
{
return(0);
}
/*
* remove all non-space whitespace from the middle of the string.
*/
from_ptr = text;
len = text_len;
to_ptr = text;
while (*from_ptr != '\0')
{
if (XP_IS_SPACE(*from_ptr) && (*from_ptr != ' '))
{
from_ptr++;
len--;
}
else
{
*to_ptr++ = *from_ptr++;
}
}
*to_ptr = '\0';
return(len);
}
PA_Block
lo_FEToNetLinebreaks(PA_Block text_block)
{
PA_Block new_block;
char *new_text;
char *text;
char *from_ptr;
char *to_ptr;
char break_char;
int32 len, new_len;
int32 linebreak;
if (text_block == NULL)
{
return(NULL);
}
PA_LOCK(text, char *, text_block);
XP_BCOPY(LINEBREAK, (char *)(&break_char), 1);
len = 0;
linebreak = 0;
from_ptr = text;
while (*from_ptr != '\0')
{
if (*from_ptr == break_char)
{
if (strncmp(from_ptr, LINEBREAK, LINEBREAK_LEN) == 0)
{
linebreak++;
len += LINEBREAK_LEN;
from_ptr = (char *)(from_ptr + LINEBREAK_LEN);
}
else
{
len++;
from_ptr++;
}
}
else
{
len++;
from_ptr++;
}
}
new_len = len - (LINEBREAK_LEN * linebreak) + (2 * linebreak);
new_block = PA_ALLOC(new_len + 1);
if (new_block == NULL)
{
PA_UNLOCK(text_block);
return(NULL);
}
PA_LOCK(new_text, char *, new_block);
from_ptr = text;
to_ptr = new_text;
while (*from_ptr != '\0')
{
if (*from_ptr == break_char)
{
if (strncmp(from_ptr, LINEBREAK, LINEBREAK_LEN) == 0)
{
from_ptr = (char *)(from_ptr + LINEBREAK_LEN);
*to_ptr++ = CR;
*to_ptr++ = LF;
}
else
{
*to_ptr++ = *from_ptr++;
}
}
else
{
*to_ptr++ = *from_ptr++;
}
}
*to_ptr = '\0';
new_text[new_len] = '\0';
PA_UNLOCK(new_block);
PA_UNLOCK(text_block);
return(new_block);
}
PA_Block
lo_ConvertToFELinebreaks(char *text, int32 text_len, int32 *new_len_ptr)
{
PA_Block new_block;
char *new_text;
char *from_ptr;
char *to_ptr;
char break_char;
int32 len, new_len;
int32 skip, linebreak;
if (text == NULL)
{
return(NULL);
}
break_char = '\0';
len = 0;
skip = 0;
linebreak = 0;
from_ptr = text;
to_ptr = text;
while (len < text_len)
{
if ((*from_ptr == CR)||(*from_ptr == LF))
{
if ((break_char != '\0')&&(break_char != *from_ptr))
{
skip++;
break_char = '\0';
}
else
{
skip++;
linebreak++;
break_char = *from_ptr;
}
}
from_ptr++;
len++;
}
new_len = len - skip + (LINEBREAK_LEN * linebreak);
new_block = PA_ALLOC(new_len + 1);
if (new_block == NULL)
{
return(NULL);
}
PA_LOCK(new_text, char *, new_block);
break_char = '\0';
len = 0;
from_ptr = text;
to_ptr = new_text;
while (len < text_len)
{
if ((*from_ptr == CR)||(*from_ptr == LF))
{
if ((break_char != '\0')&&(break_char != *from_ptr))
{
break_char = '\0';
}
else
{
XP_BCOPY(LINEBREAK, to_ptr, LINEBREAK_LEN);
to_ptr = (char *)(to_ptr + LINEBREAK_LEN);
break_char = *from_ptr;
}
from_ptr++;
len++;
}
else
{
*to_ptr++ = *from_ptr++;
len++;
}
}
new_text[new_len] = '\0';
*new_len_ptr = new_len;
PA_UNLOCK(new_block);
return(new_block);
}
intn
lo_EvalVAlignParam(char *str)
{
intn alignment;
alignment = LO_ALIGN_TOP;
if (pa_TagEqual("top", str))
{
alignment = LO_ALIGN_TOP;
}
else if (pa_TagEqual("bottom", str))
{
alignment = LO_ALIGN_BOTTOM;
}
else if ((pa_TagEqual("middle", str))||
(pa_TagEqual("center", str)))
{
alignment = LO_ALIGN_CENTER;
}
else if (pa_TagEqual("baseline", str))
{
alignment = LO_ALIGN_BASELINE;
}
return(alignment);
}
intn
lo_EvalDivisionAlignParam(char *str)
{
intn alignment;
alignment = LO_ALIGN_LEFT;
if (pa_TagEqual("left", str))
{
alignment = LO_ALIGN_LEFT;
}
else if (pa_TagEqual("right", str))
{
alignment = LO_ALIGN_RIGHT;
}
else if (pa_TagEqual("center", str))
{
alignment = LO_ALIGN_CENTER;
}
else if (pa_TagEqual("justify", str))
{
alignment = LO_ALIGN_JUSTIFY;
}
return(alignment);
}
intn
lo_EvalCellAlignParam(char *str)
{
intn alignment;
alignment = LO_ALIGN_LEFT;
if (pa_TagEqual("left", str))
{
alignment = LO_ALIGN_LEFT;
}
else if (pa_TagEqual("right", str))
{
alignment = LO_ALIGN_RIGHT;
}
else if ((pa_TagEqual("middle", str))||
(pa_TagEqual("center", str)))
{
alignment = LO_ALIGN_CENTER;
}
return(alignment);
}
#ifdef EDITOR
/* this is a replacement routine for the non-editor version and should eventually
* replace the non-edit version. It uses an array of values. instead of an
* unrolled loop.
*/
/*
* Indexed by LO_ALIGN_ETC
*/
char* lo_alignStrings[] = {
"abscenter", /* LO_ALIGN_CENTER */
"left", /* LO_ALIGN_LEFT */
"right", /* LO_ALIGN_RIGHT */
"texttop", /* LO_ALIGN_TOP */
"absbottom", /* LO_ALIGN_BOTTOM */
"baseline", /* LO_ALIGN_BASELINE */
"center", /* LO_ALIGN_NCSA_CENTER */
"bottom", /* LO_ALIGN_NCSA_BOTTOM */
"top", /* LO_ALIGN_NCSA */
0
};
intn
lo_EvalAlignParam(char *str, Bool *floating)
{
intn alignment;
*floating = FALSE;
alignment = LO_ALIGN_BASELINE;
if (pa_TagEqual("middle", str))
{
alignment = LO_ALIGN_NCSA_CENTER;
}
else if (pa_TagEqual("absmiddle", str))
{
alignment = LO_ALIGN_CENTER;
}
else
{
intn i = 0;
Bool bFound = FALSE;
while( lo_alignStrings[i] != NULL && bFound == FALSE )
{
if( pa_TagEqual( lo_alignStrings[i], str) )
{
bFound = TRUE;
alignment = i;
}
i++;
}
}
if( alignment == LO_ALIGN_LEFT || alignment == LO_ALIGN_RIGHT)
{
*floating = TRUE;
}
return alignment;
}
#else
intn
lo_EvalAlignParam(char *str, Bool *floating)
{
intn alignment;
*floating = FALSE;
alignment = LO_ALIGN_BASELINE;
if (pa_TagEqual("top", str))
{
alignment = LO_ALIGN_NCSA_TOP;
}
else if (pa_TagEqual("texttop", str))
{
alignment = LO_ALIGN_TOP;
}
else if (pa_TagEqual("bottom", str))
{
alignment = LO_ALIGN_NCSA_BOTTOM;
}
else if (pa_TagEqual("absbottom", str))
{
alignment = LO_ALIGN_BOTTOM;
}
else if (pa_TagEqual("baseline", str))
{
alignment = LO_ALIGN_BASELINE;
}
else if ((pa_TagEqual("middle", str))||
(pa_TagEqual("center", str)))
{
alignment = LO_ALIGN_NCSA_CENTER;
}
else if ((pa_TagEqual("absmiddle", str))||
(pa_TagEqual("abscenter", str)))
{
alignment = LO_ALIGN_CENTER;
}
else if (pa_TagEqual("left", str))
{
alignment = LO_ALIGN_LEFT;
*floating = TRUE;
}
else if (pa_TagEqual("right", str))
{
alignment = LO_ALIGN_RIGHT;
*floating = TRUE;
}
return(alignment);
}
#endif
/* set *alignment and *floating iff there
* is a valid stylesheet alignment property.
*/
MODULE_PRIVATE void
lo_EvalStyleSheetAlignment(StyleStruct *style_struct,
intn *alignment,
Bool *floating)
{
char *valign, *halign;
if(!style_struct)
return;
valign = STYLESTRUCT_GetString(style_struct,VERTICAL_ALIGN_STYLE);
halign = STYLESTRUCT_GetString(style_struct,HORIZONTAL_ALIGN_STYLE);
if(valign)
{
if (pa_TagEqual("top", valign))
{
*alignment = LO_ALIGN_NCSA_TOP;
*floating = FALSE;
}
else if (pa_TagEqual("texttop", valign)
|| pa_TagEqual("text-top", valign))
{
*alignment = LO_ALIGN_TOP;
*floating = FALSE;
}
else if (pa_TagEqual("bottom", valign))
{
*alignment = LO_ALIGN_NCSA_BOTTOM;
*floating = FALSE;
}
else if (pa_TagEqual("absbottom", valign)
|| pa_TagEqual("text-bottom", valign))
{
*alignment = LO_ALIGN_BOTTOM;
*floating = FALSE;
}
else if (pa_TagEqual("baseline", valign))
{
*alignment = LO_ALIGN_BASELINE;
*floating = FALSE;
}
else if ((pa_TagEqual("middle", valign))||
(pa_TagEqual("center", valign)))
{
*alignment = LO_ALIGN_NCSA_CENTER;
*floating = FALSE;
}
else if ((pa_TagEqual("absmiddle", valign))||
(pa_TagEqual("abscenter", valign)))
{
*alignment = LO_ALIGN_CENTER;
*floating = FALSE;
}
}
if(halign)
{
if (pa_TagEqual("left", halign))
{
*alignment = LO_ALIGN_LEFT;
*floating = TRUE;
}
else if (pa_TagEqual("right", halign))
{
*alignment = LO_ALIGN_RIGHT;
*floating = TRUE;
}
}
XP_FREEIF(valign);
XP_FREEIF(halign);
return;
}
void
lo_CalcAlignOffsets(lo_DocState *state, LO_TextInfo *text_info, intn alignment,
int32 width, int32 height, int16 *x_offset, int32 *y_offset,
int32 *line_inc, int32 *baseline_inc)
{
*line_inc = 0;
*baseline_inc = 0;
switch (alignment)
{
case LO_ALIGN_CENTER:
*x_offset = 0;
/*
* Center after current text.
*/
/*
* If the image is shorter than the height
* of this line, just increase y_offset
* to get it centered.
*/
if (height < state->line_height)
{
*y_offset += ((state->line_height - height)
/ 2);
}
/*
* Else for images taller than the line
* we will need to move all their
* baselines down, plus increase the rest
* of their lineheights to reflect the
* big centered image.
*/
else
{
*y_offset = 0;
*baseline_inc = (height - state->line_height)
/ 2;
*line_inc = height - state->line_height -
*baseline_inc;
}
break;
case LO_ALIGN_NCSA_CENTER:
*x_offset = 0;
/*
* Center on baseline of current text.
*/
/*
* If the image centered on the baseline will not
* extend below or above the current line,
* just increase y_offset to get it centered.
*/
if (((height / 2) <= state->baseline)&&
((height / 2) <= (state->line_height -
state->baseline)))
{
*y_offset = state->baseline -
(height / 2);
}
/*
* Else the image extends over the bottom, but
* not off the top.
*/
else if ((height / 2) <= state->baseline)
{
*y_offset = state->baseline -
(height / 2);
*line_inc = *y_offset + height -
state->line_height;
}
/*
* Else for images taller than the line
* we will need to move all their
* baselines down, plus and maybe increase the rest
* of their lineheights to reflect the
* big centered image.
*/
else
{
*y_offset = 0;
*baseline_inc = (height / 2) - state->baseline;
if ((state->baseline + (height / 2)) >
state->line_height)
{
*line_inc = state->baseline +
(height / 2) -
state->line_height;
}
}
break;
case LO_ALIGN_TOP:
*x_offset = 0;
/*
* Move the top of the image to the top of the
* last text placed. On negative offsets
* (such as at the start of a line) just
* start the image at the top.
*/
*y_offset = state->baseline - text_info->ascent;
if (*y_offset < 0)
{
*y_offset = 0;
}
/*
* Top aligned images can easily hang down and make
* all the rest of the line taller. Set line_inc
* to properly increase the height of all previous
* elements.
*/
if ((*y_offset + height) > state->line_height)
{
*line_inc = *y_offset + height -
state->line_height;
}
break;
case LO_ALIGN_NCSA_TOP:
*x_offset = 0;
/*
* Move the top of the image to the top of the
* line.
*/
*y_offset = 0;
/*
* Top aligned images can easily hang down and make
* all the rest of the line taller. Set line_inc
* to properly increase the height of all previous
* elements.
*/
if ((*y_offset + height) > state->line_height)
{
*line_inc = *y_offset + height -
state->line_height;
}
break;
case LO_ALIGN_BOTTOM:
*x_offset = 0;
/*
* Like centered images, images shorter than
* the line just get move with y_offset.
*/
if (height < state->line_height)
{
*y_offset = state->line_height - height;
}
/*
* Else since they are bottom aligned.
* they move everyone's baselines and can't
* change the height below the baseline.
*/
else
{
*y_offset = 0;
*baseline_inc = height - state->line_height;
}
break;
case LO_ALIGN_NCSA_BOTTOM:
case LO_ALIGN_BASELINE:
default:
*x_offset = 0;
/*
* Like centered images, images shorter than
* the baseline just get move with y_offset.
*/
if (height < state->baseline)
{
*y_offset = state->baseline - height;
}
/*
* Else since they are baseline aligned.
* they move everyone's baselines and can't
* change the height below the baseline.
*/
else
{
*y_offset = 0;
*baseline_inc = height - state->baseline;
}
break;
}
}
int32
lo_ValueOrPercent(char *str, Bool *is_percent)
{
int32 val;
char *tptr;
*is_percent = FALSE;
if (str == NULL)
{
return(0);
}
tptr = str;
while (*tptr != '\0')
{
if (*tptr == '%')
{
*is_percent = TRUE;
*tptr = '\0';
break;
}
tptr++;
}
val = XP_ATOI(str);
if (*is_percent)
*tptr = '%'; /* Restore original string */
return(val);
}
void
lo_SetElementTextAttr(LO_Element *element, LO_TextAttr *attr)
{
switch(element->type)
{
case LO_TEXT:
element->lo_text.text_attr = attr;
break;
case LO_IMAGE:
element->lo_image.text_attr = attr;
break;
case LO_SUBDOC:
element->lo_subdoc.text_attr = attr;
break;
case LO_LINEFEED:
element->lo_linefeed.text_attr = attr;
break;
case LO_FORM_ELE:
element->lo_form.text_attr = attr;
break;
case LO_BULLET:
element->lo_bullet.text_attr = attr;
break;
default:
XP_ASSERT(0);
}
}
LO_TextAttr *
lo_GetElementTextAttr(LO_Element *element)
{
switch(element->type)
{
case LO_TEXT:
return element->lo_text.text_attr;
case LO_IMAGE:
return element->lo_image.text_attr;
case LO_SUBDOC:
return element->lo_subdoc.text_attr;
case LO_LINEFEED:
return element->lo_linefeed.text_attr;
case LO_FORM_ELE:
return element->lo_form.text_attr;
case LO_BULLET:
return element->lo_bullet.text_attr;
default:
return NULL;
}
}
void
lo_CopyTextAttr(LO_TextAttr *old_attr, LO_TextAttr *new_attr)
{
if ((old_attr == NULL)||(new_attr == NULL))
{
return;
}
new_attr->size = old_attr->size;
new_attr->fontmask = old_attr->fontmask;
new_attr->fg.red = old_attr->fg.red;
new_attr->fg.green = old_attr->fg.green;
new_attr->fg.blue = old_attr->fg.blue;
new_attr->bg.red = old_attr->bg.red;
new_attr->bg.green = old_attr->bg.green;
new_attr->bg.blue = old_attr->bg.blue;
new_attr->no_background = old_attr->no_background;
new_attr->attrmask = old_attr->attrmask;
new_attr->font_face = old_attr->font_face;
/*
* FE_Data is not copied, it belongs to the FE,
* And will need to be generated by the FE the first time this
* new TextAttr is used.
*/
new_attr->FE_Data = NULL;
new_attr->charset = old_attr->charset;
new_attr->point_size = old_attr->point_size;
new_attr->font_weight = old_attr->font_weight;
}
LO_TextAttr *
lo_FetchTextAttr(lo_DocState *state, LO_TextAttr *old_attr)
{
LO_TextAttr **text_attr_hash;
LO_TextAttr *attr_ptr;
int32 hash_index;
if (old_attr == NULL)
{
return(NULL);
}
hash_index = (old_attr->fontmask & old_attr->attrmask) % FONT_HASH_SIZE;
XP_LOCK_BLOCK(text_attr_hash, LO_TextAttr **,
state->top_state->text_attr_hash);
attr_ptr = text_attr_hash[hash_index];
while (attr_ptr != NULL)
{
if ((attr_ptr->size == old_attr->size)&&
(attr_ptr->fontmask == old_attr->fontmask)&&
(attr_ptr->attrmask == old_attr->attrmask)&&
(attr_ptr->fg.red == old_attr->fg.red)&&
(attr_ptr->fg.green == old_attr->fg.green)&&
(attr_ptr->fg.blue == old_attr->fg.blue)&&
(attr_ptr->bg.red == old_attr->bg.red)&&
(attr_ptr->bg.green == old_attr->bg.green)&&
(attr_ptr->bg.blue == old_attr->bg.blue)&&
(attr_ptr->font_face == old_attr->font_face)&&
(attr_ptr->charset == old_attr->charset)&&
(attr_ptr->point_size == old_attr->point_size)&&
(attr_ptr->font_weight == old_attr->font_weight)
#ifdef DOM
&& (state->in_span == FALSE) /* Never reuse text attrs in SPANS */
#endif
)
{
break;
}
attr_ptr = attr_ptr->next;
}
if (attr_ptr == NULL)
{
LO_TextAttr *new_attr;
new_attr = XP_NEW_ZAP(LO_TextAttr);
if (new_attr != NULL)
{
lo_CopyTextAttr(old_attr, new_attr);
new_attr->next = text_attr_hash[hash_index];
text_attr_hash[hash_index] = new_attr;
}
else
{
state->top_state->out_of_memory = TRUE;
}
attr_ptr = new_attr;
}
XP_UNLOCK_BLOCK(state->top_state->text_attr_hash);
return(attr_ptr);
}
void
lo_AddMarginStack(lo_DocState *state, int32 x, int32 y,
int32 width, int32 height,
int32 border_width,
int32 border_vert_space, int32 border_horiz_space,
intn alignment)
{
lo_MarginStack *mptr;
mptr = XP_NEW(lo_MarginStack);
if (mptr == NULL)
{
state->top_state->out_of_memory = TRUE;
return;
}
mptr->y_min = y;
if (y >= 0)
{
mptr->y_max = y + height + (2 * border_width) +
(2 * border_vert_space);
}
else
{
mptr->y_max = height + (2 * border_width) +
(2 * border_vert_space);
}
if (alignment == LO_ALIGN_RIGHT)
{
if (state->right_margin_stack == NULL)
{
mptr->margin = state->right_margin - width -
(2 * border_width) - (2 * border_horiz_space);
}
else
{
mptr->margin = state->right_margin_stack->margin -
width - (2 * border_width) -
(2 * border_horiz_space);
}
mptr->next = state->right_margin_stack;
state->right_margin_stack = mptr;
}
else
{
mptr->margin = state->left_margin + width +
(2 * border_width) + (2 * border_horiz_space);
mptr->next = state->left_margin_stack;
state->left_margin_stack = mptr;
}
}
/*
* When clipping lines we have essentially scrolled the document up.
* Move the margin blocks up too.
*/
void
lo_ShiftMarginsUp(MWContext *context, lo_DocState *state, int32 dy)
{
lo_MarginStack *mptr;
int32 y;
mptr = state->left_margin_stack;
while (mptr != NULL)
{
y = mptr->y_min - dy;
if (y < 0)
{
y = 0;
}
mptr->y_min = y;
y = mptr->y_max - dy;
if (y < 0)
{
y = 0;
}
mptr->y_max = y;
mptr = mptr->next;
}
mptr = state->right_margin_stack;
while (mptr != NULL)
{
y = mptr->y_min - dy;
if (y < 0)
{
y = 0;
}
mptr->y_min = y;
y = mptr->y_max - dy;
if (y < 0)
{
y = 0;
}
mptr->y_max = y;
mptr = mptr->next;
}
}
void
lo_ClearToLeftMargin(MWContext *context, lo_DocState *state)
{
lo_MarginStack *mptr;
int32 y;
mptr = state->left_margin_stack;
if (mptr == NULL)
{
return;
}
y = state->y;
if (mptr->y_max > y)
{
y = mptr->y_max;
}
while (mptr->next != NULL)
{
lo_MarginStack *margin;
if (mptr->y_max > y)
{
y = mptr->y_max;
}
margin = mptr;
mptr = mptr->next;
XP_DELETE(margin);
}
XP_DELETE(mptr);
state->y = y;
state->left_margin_stack = NULL;
state->left_margin = state->win_left;
state->x = state->left_margin;
/*
* Find where we hit the right margin, popping old
* obsolete elements as we go.
*/
mptr = state->right_margin_stack;
while ((mptr != NULL)&&(state->y > mptr->y_max))
{
lo_MarginStack *margin;
margin = mptr;
mptr = mptr->next;
XP_DELETE(margin);
}
if (mptr != NULL)
{
state->right_margin_stack = mptr;
state->right_margin = mptr->margin;
}
else
{
state->right_margin_stack = NULL;
state->right_margin = (state->list_stack != NULL)
? state->list_stack->old_right_margin
: 0;
}
}
void
lo_ClearToRightMargin(MWContext *context, lo_DocState *state)
{
lo_MarginStack *mptr;
int32 y;
mptr = state->right_margin_stack;
if (mptr == NULL)
{
return;
}
y = state->y;
if (mptr->y_max > y)
{
y = mptr->y_max;
}
while (mptr->next != NULL)
{
lo_MarginStack *margin;
if (mptr->y_max > y)
{
y = mptr->y_max;
}
margin = mptr;
mptr = mptr->next;
XP_DELETE(margin);
}
XP_DELETE(mptr);
state->y = y;
state->right_margin_stack = NULL;
state->right_margin = state->win_width - state->win_right;
/*
* Find where we hit the left margin, popping old
* obsolete elements as we go.
*/
mptr = state->left_margin_stack;
while ((mptr != NULL)&&(state->y > mptr->y_max))
{
lo_MarginStack *margin;
margin = mptr;
mptr = mptr->next;
XP_DELETE(margin);
}
if (mptr != NULL)
{
state->left_margin_stack = mptr;
state->left_margin = mptr->margin;
}
else
{
state->left_margin_stack = NULL;
state->left_margin = (state->list_stack != NULL)
? state->list_stack->old_left_margin
: 0;
}
}
void
lo_ClearToBothMargins(MWContext *context, lo_DocState *state)
{
lo_MarginStack *mptr;
int32 y;
y = state->y;
mptr = state->right_margin_stack;
if (mptr != NULL)
{
if (mptr->y_max > y)
{
y = mptr->y_max;
}
while (mptr->next != NULL)
{
lo_MarginStack *margin;
if (mptr->y_max > y)
{
y = mptr->y_max;
}
margin = mptr;
mptr = mptr->next;
XP_DELETE(margin);
}
XP_DELETE(mptr);
state->y = y;
state->right_margin_stack = NULL;
state->right_margin = state->win_width - state->win_right;
}
mptr = state->left_margin_stack;
if (mptr != NULL)
{
if (mptr->y_max > y)
{
y = mptr->y_max;
}
while (mptr->next != NULL)
{
lo_MarginStack *margin;
if (mptr->y_max > y)
{
y = mptr->y_max;
}
margin = mptr;
mptr = mptr->next;
XP_DELETE(margin);
}
XP_DELETE(mptr);
if (y > state->y)
{
state->y = y;
}
state->left_margin_stack = NULL;
state->left_margin = state->win_left;
state->x = state->left_margin;
}
}
void
lo_FindLineMargins(MWContext *context, lo_DocState *state, Bool updateFE)
{
lo_MarginStack *mptr;
LO_Element *eptr;
eptr = state->float_list;
/*
while ((eptr != NULL)&&(eptr->lo_any.y < 0))
*/
while (eptr != NULL)
{
LO_Element *next_eptr = NULL;
if (eptr->lo_any.y < 0)
{
int32 expose_y;
int32 expose_height;
/* LO_Element *next_eptr; */
next_eptr = NULL;
/*
* Float the y to our current position.
*/
eptr->lo_any.y = state->y;
/*
* These get coppied into special variables because they
* may get changed by a table in the floating list.
*/
expose_y = eptr->lo_any.y;
expose_height = eptr->lo_any.height;
/*
* Special case: If we have just placed a TABLE element,
* we need to properly offset all the CELLs inside it.
*/
if (eptr->type == LO_TABLE)
{
int32 y2;
int32 change_y;
LO_Element *tptr;
/*
* We need to know the bottom and top extents of
* the table to know big an area to refresh.
*/
y2 = expose_y + eptr->lo_any.y_offset + expose_height;
/*
* This is how far to move the cells based on
* where the table thought it was placed.
*/
change_y = state->y - eptr->lo_table.expected_y;
/*
* set tptr to the start of the cell list.
*/
tptr = eptr->lo_any.next;
while ((tptr != NULL)&&(tptr->type == LO_CELL))
{
/*
* Only do this work if the table has moved.
*/
if (change_y != 0)
{
tptr->lo_any.y += change_y;
lo_ShiftCell((LO_CellStruct *)tptr,
0, change_y);
}
/*
* Find upper and lower bounds of the
* cells.
*/
if (tptr->lo_any.y < expose_y)
{
expose_y = tptr->lo_any.y;
}
if ((tptr->lo_any.y + tptr->lo_any.y_offset +
tptr->lo_any.height) > y2)
{
y2 = tptr->lo_any.y +
tptr->lo_any.y_offset +
tptr->lo_any.height;
}
tptr = tptr->lo_any.next;
}
/*
* Whatever is after all the table cells will
* really be the next eptr.
*/
if (tptr != NULL)
{
next_eptr = tptr;
}
/*
* Adjust exposed area height for lower bound.
* Upper bound already possibly moved.
*/
if ((y2 - expose_y - eptr->lo_any.y_offset) >
expose_height)
{
expose_height = y2 - expose_y -
eptr->lo_any.y_offset;
}
}
if (updateFE)
{
/*
* We may have been blocking display on this floating image.
* If so deal with it here.
*/
if ((state->display_blocked != FALSE)&&
(state->is_a_subdoc == SUBDOC_NOT)&&
(state->display_blocking_element_y == 0)&&
(state->display_blocking_element_id != -1)&&
(eptr->lo_any.ele_id >=
state->display_blocking_element_id))
{
state->display_blocking_element_y =
state->y;
/*
* Special case, if the blocking element
* is on the first line, no blocking
* at all needs to happen.
*/
if (state->y == state->win_top)
{
state->display_blocked = FALSE;
FE_SetDocPosition(context,
FE_VIEW, 0, state->base_y);
if (context->compositor)
{
XP_Rect rect;
rect.left = 0;
rect.top = 0;
rect.right = state->win_width;
rect.bottom = state->win_height;
CL_UpdateDocumentRect(context->compositor,
&rect, (PRBool)FALSE);
}
}
}
} /* end if (updateFE) */
if (context->compositor)
{
XP_Rect rect;
rect.left = eptr->lo_any.x + eptr->lo_any.x_offset;
rect.top = expose_y + eptr->lo_any.y_offset;
rect.right = rect.left + eptr->lo_any.width;
rect.bottom = rect.top + expose_height;
CL_UpdateDocumentRect(context->compositor,
&rect, (PRBool)FALSE);
}
/*
* In case these floating elements are the only thing in the
* doc (or subdoc) we need to set the state min and max widths
* when we place them.
*/
{
int32 width;
XP_Rect rect;
rect.left = 0;
rect.right = 0;
lo_GetElementBbox(eptr, &rect);
width = rect.right - rect.left;
if (width > 0)
{
if (width > state->min_width)
{
state->min_width = width;
}
/*
* Only do this if not in a table
*/
if (state->is_a_subdoc == SUBDOC_NOT)
{
width += rect.left;
}
if (width > state->max_width)
{
state->max_width = width;
}
}
}
/*
eptr = eptr->lo_any.next;
*/
/*
* If we are skipping a table's cells, set eptr
* properly now.
*/
/*
if (next_eptr != NULL)
{
eptr = next_eptr;
}
*/
} /* End if (eptr->lo_any.y < 0) */
eptr = eptr->lo_any.next;
/*
* If we are skipping a table's cells, set eptr
* properly now.
*/
if (next_eptr != NULL)
{
eptr = next_eptr;
}
} /* End while */
/*
* Find floating elements just added to the left margin stack
* from the last line, and set their absolute
* coordinates.
*/
mptr = state->left_margin_stack;
while ((mptr != NULL)&&(mptr->y_min < 0))
{
mptr->y_min = state->y;
mptr->y_max = mptr->y_min + mptr->y_max;
mptr = mptr->next;
}
/*
* Find where we hit the left margin, popping old
* obsolete elements as we go.
*/
mptr = state->left_margin_stack;
while ((mptr != NULL)&&(state->y > mptr->y_max))
{
lo_MarginStack *margin;
margin = mptr;
mptr = mptr->next;
XP_DELETE(margin);
}
if (mptr != NULL)
{
state->left_margin_stack = mptr;
state->left_margin = mptr->margin;
/*
* For a list wrapped around a floating image we may
* need to be indented from the image edge.
*/
if (state->list_stack->old_left_margin > mptr->margin)
{
state->left_margin = state->list_stack->old_left_margin;
}
}
else
{
state->left_margin_stack = NULL;
state->left_margin = (state->list_stack != NULL)
? state->list_stack->old_left_margin
: 0;
}
/*
* Find floating elements just added to the right margin stack
* from the last line, and set their absolute
* coordinates.
*/
mptr = state->right_margin_stack;
while ((mptr != NULL)&&(mptr->y_min < 0))
{
mptr->y_min = state->y;
mptr->y_max = mptr->y_min + mptr->y_max;
mptr = mptr->next;
}
/*
* Find where we hit the right margin, popping old
* obsolete elements as we go.
*/
mptr = state->right_margin_stack;
while ((mptr != NULL)&&(state->y > mptr->y_max))
{
lo_MarginStack *margin;
margin = mptr;
mptr = mptr->next;
XP_DELETE(margin);
}
if (mptr != NULL)
{
state->right_margin_stack = mptr;
state->right_margin = mptr->margin;
}
else
{
state->right_margin_stack = NULL;
state->right_margin = (state->list_stack != NULL)
? state->list_stack->old_right_margin
: 0;
}
}
void
lo_RecycleElements(MWContext *context, lo_DocState *state, LO_Element *elements)
{
LO_Element *eptr;
if (elements == NULL)
{
return;
}
eptr = elements;
while(eptr->lo_any.next != NULL)
{
lo_ScrapeElement(context, eptr, TRUE);
eptr = eptr->lo_any.next;
}
lo_ScrapeElement(context, eptr, TRUE);
#ifdef MEMORY_ARENAS
if ( EDT_IS_EDITOR(context) ) {
eptr->lo_any.next = state->top_state->recycle_list;
state->top_state->recycle_list = elements;
}
#else
eptr->lo_any.next = state->top_state->recycle_list;
state->top_state->recycle_list = elements;
#endif /* MEMORY_ARENAS */
}
LO_Element *
lo_NewElement(MWContext *context, lo_DocState *state, intn type,
ED_Element *edit_element, intn edit_offset)
{
LO_Element *eptr;
#ifdef MEMORY_ARENAS
int32 size;
switch(type)
{
case LO_TEXT:
size = sizeof(LO_TextStruct);
break;
case LO_LINEFEED:
size = sizeof(LO_LinefeedStruct);
break;
case LO_HRULE:
size = sizeof(LO_HorizRuleStruct);
break;
case LO_IMAGE:
size = sizeof(LO_ImageStruct);
break;
case LO_BULLET:
size = sizeof(LO_BulletStruct);
break;
case LO_FORM_ELE:
size = sizeof(LO_FormElementStruct);
break;
case LO_SUBDOC:
size = sizeof(LO_SubDocStruct);
break;
case LO_TABLE:
size = sizeof(LO_TableStruct);
break;
case LO_BUILTIN:
size = sizeof(LO_BuiltinStruct);
break;
case LO_CELL:
size = sizeof(LO_CellStruct);
break;
case LO_EMBED:
size = sizeof(LO_EmbedStruct);
break;
#ifdef JAVA
case LO_JAVA:
size = sizeof(LO_JavaAppStruct);
break;
#endif
case LO_EDGE:
size = sizeof(LO_EdgeStruct);
break;
case LO_OBJECT:
size = sizeof(LO_ObjectStruct);
break;
case LO_PARAGRAPH:
size = sizeof(LO_ParagraphStruct);
break;
case LO_CENTER:
size = sizeof(LO_CenterStruct);
break;
case LO_MULTICOLUMN:
size = sizeof(LO_MulticolumnStruct);
break;
case LO_TEXTBLOCK:
size = sizeof(LO_TextBlock);
break;
case LO_LIST:
size = sizeof(LO_ListStruct);
break;
case LO_DESCTITLE:
size = sizeof(LO_DescTitleStruct);
break;
case LO_DESCTEXT:
size = sizeof(LO_DescTextStruct);
break;
case LO_BLOCKQUOTE:
size = sizeof(LO_BlockQuoteStruct);
break;
case LO_LAYER:
size = sizeof(LO_LayerStruct);
break;
case LO_HEADING:
size = sizeof(LO_HeadingStruct);
break;
case LO_SPAN:
size = sizeof(LO_SpanStruct);
break;
case LO_DIV:
size = sizeof(LO_DivStruct);
break;
case LO_SPACER:
size = sizeof(LO_SpacerStruct);
break;
case LO_FLOAT:
size = sizeof(LO_FloatStruct);
break;
default:
size = sizeof(LO_Any);
break;
}
if ( ! EDT_IS_EDITOR(context) ) {
eptr = (LO_Element *)lo_MemoryArenaAllocate(state->top_state, size);
}
else {
if (state->top_state->recycle_list != NULL)
{
eptr = state->top_state->recycle_list;
state->top_state->recycle_list = eptr->lo_any.next;
}
else
{
eptr = XP_NEW_ZAP(LO_Element);
}
}
#else
/* sorry about all the asserts, in my debug version somehow state
* becomes nil after a malloc failure. */
#ifdef DEBUG
assert (state);
#endif
if (state->top_state->recycle_list != NULL)
{
eptr = state->top_state->recycle_list;
state->top_state->recycle_list = eptr->lo_any.next;
}
else
{
eptr = XP_NEW(LO_Element);
#ifdef DEBUG
assert (state);
#endif
}
#endif /* MEMORY_ARENAS */
if (eptr == NULL)
{
#ifdef DEBUG
assert (state);
#endif
state->top_state->out_of_memory = TRUE;
}
else
{
eptr->lo_any.next = NULL;
eptr->lo_any.prev = NULL;
#ifdef EDITOR
eptr->lo_any.edit_element = NULL;
eptr->lo_any.edit_offset = 0;
if( EDT_IS_EDITOR(context) )
{
if( lo_EditableElement( type ) )
{
if( edit_element == 0 ){
edit_element = state->edit_current_element;
edit_offset = state->edit_current_offset;
}
EDT_SetLayoutElement( edit_element,
edit_offset,
type,
eptr );
} else if( edit_element && (type == LO_TABLE || type == LO_CELL) )
{
/* _TABLE_EXPERIMENT_ SAVE POINTER TO EDIT ELEMENT IN LO STRUCT */
eptr->lo_any.edit_element = edit_element;
}
}
state->edit_force_offset = FALSE;
#endif
}
return(eptr);
}
/* Add a named anchor to the global list of named anchors. This does not
associate the anchor with a layout element. lo_SetNamedAnchor should be
followed by a call to lo_BindNamedAnchorToElement in order to associate
the named anchor with a layout element. */
Bool
lo_SetNamedAnchor(lo_DocState *state, PA_Block name)
{
lo_NameList *name_rec = NULL;
lo_DocLists *doc_lists;
/*
* No named anchors are allowed within a
* hacked scrolling content layout document.
*/
if (state->top_state->scrolling_doc != FALSE)
{
if (name != NULL)
{
PA_FREE(name);
}
return FALSE;
}
doc_lists = lo_GetCurrentDocLists(state);
#ifdef MOCHA
if (state->in_relayout) {
/* Look for the old lo_NameList. Its mocha_object is still valid. */
lo_NameList *name_list = doc_lists->name_list;
lo_NameList *prev;
Bool no_match;
char *s1, *s2;
XP_ASSERT(name_list); /* If in relayout, this cannot be empty. */
prev = name_list;
name_rec = name_list;
while (name_rec != NULL) {
PA_LOCK(s1, char*, name);
PA_LOCK(s2, char*, name_rec->name);
no_match = XP_STRCMP(s1, s2);
PA_UNLOCK(name_rec->name);
PA_UNLOCK(name);
if (!no_match) {
if (name_rec == name_list)
doc_lists->name_list = name_list->next;
else
prev->next = name_rec->next;
PA_FREE(name_rec->name); /* No need for this, use new one. */
break;
}
prev = name_rec;
name_rec = name_rec->next;
}
}
if (!name_rec || !state->in_relayout) {
#endif /* MOCHA */
name_rec = XP_NEW(lo_NameList);
if (name_rec == NULL)
{
state->top_state->out_of_memory = TRUE;
PA_FREE(name);
return FALSE;
}
#ifdef MOCHA
name_rec->mocha_object = NULL;
}
#endif /* MOCHA */
name_rec->x = 0;
name_rec->y = 0;
name_rec->name = name;
name_rec->element = NULL; /* Set by lo_BindNamedAnchorToElement. */
name_rec->next = doc_lists->name_list;
doc_lists->name_list = name_rec;
return TRUE;
}
/* Associate a named anchor with a layout element. The named anchor should
be the first one in the list of named anchors.*/
Bool
lo_BindNamedAnchorToElement(lo_DocState *state, PA_Block name,
LO_Element *element)
{
Bool no_match;
LO_Element *eptr;
lo_NameList *name_rec;
char *s1, *s2;
lo_DocLists *doc_lists;
doc_lists = lo_GetCurrentDocLists(state);
if (element == NULL)
{
if (state->line_list == NULL)
{
eptr = state->end_last_line;
}
else
{
eptr = state->line_list;
while (eptr->lo_any.next != NULL)
{
eptr = eptr->lo_any.next;
}
}
}
else
{
eptr = element;
}
/* Find the matching name_rec in the name_list */
name_rec = doc_lists->name_list;
PA_LOCK(s1, char*, name);
while (name_rec != NULL)
{
PA_LOCK(s2, char*, name_rec->name);
no_match = XP_STRCMP(s1, s2);
PA_UNLOCK(name_rec->name);
if (!no_match)
break;
name_rec = name_rec->next;
}
PA_UNLOCK(name);
if (name_rec == NULL)
return FALSE;
if (eptr == NULL)
{
name_rec->x = 0;
name_rec->y = 0;
}
else
{
name_rec->x = eptr->lo_any.x;
name_rec->y = eptr->lo_any.y;
}
name_rec->element = eptr;
return TRUE;
}
#ifdef DOM
/* Add a named span to the global list of named spans. This does not
associate the span with a layout element. lo_SetNamedSpan should be
followed by a call to lo_BindNamedSpanToElement in order to associate
the named span with a layout element. */
Bool
lo_SetNamedSpan(lo_DocState *state, PA_Block id)
{
lo_NameList *name_rec = NULL;
lo_DocLists *doc_lists;
/*
* No named spans are allowed within a
* hacked scrolling content layout document.
*/
if (state->top_state->scrolling_doc != FALSE)
{
if (id != NULL)
{
PA_FREE(id);
}
return FALSE;
}
doc_lists = lo_GetCurrentDocLists(state);
#ifdef MOCHA
if (state->in_relayout) {
/* Look for the old lo_NameList. Its mocha_object is still valid. */
lo_NameList *span_list = doc_lists->span_list;
lo_NameList *prev;
Bool no_match;
char *s1, *s2;
XP_ASSERT(span_list); /* If in relayout, this cannot be empty. */
prev = span_list;
name_rec = span_list;
while (name_rec != NULL) {
PA_LOCK(s1, char*, id);
PA_LOCK(s2, char*, name_rec->name);
no_match = XP_STRCMP(s1, s2);
PA_UNLOCK(name_rec->name);
PA_UNLOCK(id);
if (!no_match) {
if (name_rec == span_list)
doc_lists->span_list = span_list->next;
else
prev->next = name_rec->next;
PA_FREE(name_rec->name); /* No need for this, use new one. */
break;
}
prev = name_rec;
name_rec = name_rec->next;
}
}
if (!name_rec || !state->in_relayout) {
#endif /* MOCHA */
name_rec = XP_NEW(lo_NameList);
if (name_rec == NULL)
{
state->top_state->out_of_memory = TRUE;
PA_FREE(id);
return FALSE;
}
#ifdef MOCHA
name_rec->mocha_object = NULL;
}
#endif /* MOCHA */
name_rec->x = 0;
name_rec->y = 0;
name_rec->name = id;
name_rec->element = NULL; /* Set by lo_BindNamedSpanToElement. */
name_rec->next = doc_lists->span_list;
doc_lists->span_list = name_rec;
return TRUE;
}
/* Associate a named span with a layout element. The named span should
be the first one in the list of named spans.*/
Bool
lo_BindNamedSpanToElement(lo_DocState *state, PA_Block name,
LO_Element *element)
{
Bool no_match;
LO_Element *eptr;
lo_NameList *name_rec;
char *s1, *s2;
lo_DocLists *doc_lists;
doc_lists = lo_GetCurrentDocLists(state);
if (element == NULL)
{
if (state->line_list == NULL)
{
eptr = state->end_last_line;
}
else
{
eptr = state->line_list;
while (eptr->lo_any.next != NULL)
{
eptr = eptr->lo_any.next;
}
}
}
else
{
eptr = element;
}
/* Find the matching name_rec in the span_list */
name_rec = doc_lists->span_list;
PA_LOCK(s1, char*, name);
while (name_rec != NULL)
{
PA_LOCK(s2, char*, name_rec->name);
no_match = XP_STRCMP(s1, s2);
PA_UNLOCK(name_rec->name);
if (!no_match)
break;
name_rec = name_rec->next;
}
PA_UNLOCK(name);
if (name_rec == NULL)
return FALSE;
if (eptr == NULL)
{
name_rec->x = 0;
name_rec->y = 0;
}
else
{
name_rec->x = eptr->lo_any.x;
name_rec->y = eptr->lo_any.y;
}
name_rec->element = eptr;
return TRUE;
}
#endif /* DOM */
void
lo_AddNameList(lo_DocState *state, lo_DocState *old_state)
{
/*
* Now named anchors are added directly to the
* top_state (or layer's) name_list, so we don't have to push
* them up. We do, however, need to update their positions,
* though it seems like this is done at the end of table
* processing. Hence this code is no longer necessary.
*/
#if 0
lo_NameList *name_list;
lo_NameList *nptr;
name_list = old_state->name_list;
while (name_list != NULL)
{
/*
* Extract the current record from the list.
*/
nptr = name_list;
name_list = name_list->next;
/*
* The element almost certainly has been moved
* from subdoc to main cell, correct its position.
*/
if (nptr->element != NULL)
{
nptr->x = nptr->element->lo_any.x;
nptr->y = nptr->element->lo_any.y;
}
/*
* Stick it into the main name list.
*/
nptr->next = state->name_list;
state->name_list = nptr;
}
old_state->name_list = name_list;
#endif /* 0 */
}
void
lo_CheckNameList(MWContext *context, lo_DocState *state, int32 min_id)
{
lo_NameList *nptr;
lo_DocLists *doc_lists;
/*
* Positions of named elements are only accurate if
* we are not in a nested subdoc.
*/
if (state->is_a_subdoc != SUBDOC_NOT)
{
return;
}
doc_lists = lo_GetCurrentDocLists(state);
nptr = doc_lists->name_list;
while (nptr != NULL)
{
/*
* If the element's id is greater
* than the passed minimum, then
* the element almost certainly has been moved
* during table processing,
* correct its position.
*/
if ((nptr->element != NULL)&&
(nptr->element->lo_any.ele_id > min_id))
{
nptr->x = nptr->element->lo_any.x;
nptr->y = nptr->element->lo_any.y;
}
/*
* If we are blocked on a named element.
* Check if this name is one we are waiting on.
*/
if ((state->display_blocking_element_id == -1)&&
(nptr->name != NULL))
{
char *name;
PA_LOCK(name, char *, nptr->name);
if (XP_STRCMP(name,
(char *)(state->top_state->name_target + 1)) == 0)
{
XP_FREE(state->top_state->name_target);
state->top_state->name_target = NULL;
if (nptr->element != NULL)
{
state->display_blocking_element_id =
nptr->element->lo_any.ele_id;
}
else
{
state->display_blocking_element_id =
state->top_state->element_id;
}
/*
* If the display is blocked for an element
* we havn't reached yet, check to see if
* it is in this line, and if so, save its
* y position.
*/
if ((state->display_blocked != FALSE)&&
(state->is_a_subdoc == SUBDOC_NOT)&&
(state->display_blocking_element_y == 0)&&
(state->display_blocking_element_id != -1))
{
state->display_blocking_element_y = nptr->y;
}
PA_UNLOCK(nptr->name);
}
else
{
PA_UNLOCK(nptr->name);
}
}
nptr = nptr->next;
}
}
void
lo_AppendToLineList(MWContext *context, lo_DocState *state,
LO_Element *element, int32 baseline_inc)
{
LO_Element *eptr;
#ifdef DOM
if (state->in_span)
{
lo_SetInSpanAttribute( element );
}
if (state->current_span != NULL)
{
if (!lo_BindNamedSpanToElement(state, state->current_span,
element))
{
XP_ASSERT(FALSE);
}
state->current_span = NULL;
}
#endif
if (state->current_named_anchor != NULL) {
if (!lo_BindNamedAnchorToElement(state, state->current_named_anchor,
element)) {
XP_ASSERT(FALSE);
}
state->current_named_anchor = NULL;
}
#ifdef MOCHA
else if (state->current_anchor) {
state->current_anchor->element = element;
}
#endif /* MOCHA */
element->lo_any.next = NULL;
element->lo_any.prev = NULL;
eptr = state->line_list;
if (eptr == NULL)
{
state->line_list = element;
}
else
{
while (eptr->lo_any.next != NULL)
{
eptr->lo_any.y_offset += baseline_inc;
eptr = eptr->lo_any.next;
}
eptr->lo_any.y_offset += baseline_inc;
eptr->lo_any.next = element;
element->lo_any.prev = eptr;
}
}
void
lo_SetLineArrayEntry(lo_DocState *state, LO_Element *eptr, int32 line)
{
LO_Element **line_array;
#ifdef XP_WIN16
intn a_size;
intn a_indx;
intn a_line;
XP_Block *larray_array;
#endif /* XP_WIN16 */
if ((line < 0) || (line >= (state->line_num - 1)))
{
return;
}
#ifdef XP_WIN16
a_size = SIZE_LIMIT / sizeof(LO_Element *);
a_indx = (intn)(line / a_size);
a_line = (intn)(line - (a_indx * a_size));
XP_LOCK_BLOCK(larray_array, XP_Block *, state->larray_array);
state->line_array = larray_array[a_indx];
XP_LOCK_BLOCK(line_array, LO_Element **, state->line_array);
line_array[a_line] = eptr;
XP_UNLOCK_BLOCK(state->line_array);
XP_UNLOCK_BLOCK(state->larray_array);
#else
XP_LOCK_BLOCK(line_array, LO_Element **, state->line_array);
line_array[line] = eptr;
XP_UNLOCK_BLOCK(state->line_array);
#endif /* XP_WIN16 */
}
#define POSITIVE_SCALE_FACTOR 1.10 /* 10% */
#define NEGATIVE_SCALE_FACTOR .90 /* 10% */
/*
* Return the scaling percentage given a font scaler
*
*/
double
LO_GetScalingFactor(int32 scaler)
{
double scale=1.0;
double mult;
int32 count;
if(scaler < 0)
{
count = -scaler;
mult = NEGATIVE_SCALE_FACTOR;
}
else
{
count = scaler;
mult = POSITIVE_SCALE_FACTOR;
}
/* use the percentage scaling factor to the power of the pref */
while(count--)
scale *= mult;
return scale;
}
/*
* Return the width of the window for this context in chars in the default
* fixed width font. Return -1 on error.
*/
int16
LO_WindowWidthInFixedChars(MWContext *context)
{
int32 doc_id;
lo_TopState *top_state;
lo_DocState *state;
LO_TextInfo tmp_info;
LO_TextAttr tmp_attr;
LO_TextStruct tmp_text;
PA_Block buff;
char *str;
int32 width;
int16 char_cnt;
/*
* Get the unique document ID, and retreive this
* documents layout state.
*/
doc_id = XP_DOCID(context);
top_state = lo_FetchTopState(doc_id);
if ((top_state == NULL)||(top_state->doc_state == NULL))
{
return((int16)-1);
}
state = top_state->doc_state;
/*
* Create a fake text buffer to measure an 'M'.
*/
memset (&tmp_text, 0, sizeof (tmp_text));
buff = PA_ALLOC(1);
if (buff == NULL)
{
return((int16)-1);
}
PA_LOCK(str, char *, buff);
str[0] = 'M';
PA_UNLOCK(buff);
tmp_text.text = buff;
tmp_text.text_len = 1;
/*
* Fill in default fixed font information.
*/
lo_SetDefaultFontAttr(state, &tmp_attr, context);
tmp_attr.fontmask |= LO_FONT_FIXED;
tmp_text.text_attr = &tmp_attr;
/*
* Get the width of that 'M'
*/
FE_GetTextInfo(context, &tmp_text, &tmp_info);
PA_FREE(buff);
/*
* Error if bad character width
*/
if (tmp_info.max_width <= 0)
{
return((int16)-1);
}
width = state->win_width - state->win_left - state->win_right;
char_cnt = (int16)(width / tmp_info.max_width);
return(char_cnt);
}
LO_Element *
lo_FirstElementOfLine(MWContext *context, lo_DocState *state, int32 line)
{
LO_Element *eptr;
LO_Element **line_array;
if ((line < 0)||(line > (state->line_num - 2)))
{
return(NULL);
}
#ifdef XP_WIN16
{
intn a_size;
intn a_indx;
intn a_line;
XP_Block *larray_array;
a_size = SIZE_LIMIT / sizeof(LO_Element *);
a_indx = (intn)(line / a_size);
a_line = (intn)(line - (a_indx * a_size));
XP_LOCK_BLOCK(larray_array, XP_Block *,
state->larray_array);
state->line_array = larray_array[a_indx];
XP_LOCK_BLOCK(line_array, LO_Element **,
state->line_array);
eptr = line_array[a_line];
XP_UNLOCK_BLOCK(state->line_array);
XP_UNLOCK_BLOCK(state->larray_array);
}
#else
{
XP_LOCK_BLOCK(line_array, LO_Element **,
state->line_array);
eptr = line_array[line];
XP_UNLOCK_BLOCK(state->line_array);
}
#endif /* XP_WIN16 */
return(eptr);
}
Bool
lo_FindMochaExpr(char *str, char **expr_start, char **expr_end)
{
char *tptr;
char *start;
char *end;
if (str == NULL)
{
return(FALSE);
}
start = NULL;
end = NULL;
tptr = str;
while (*tptr != '\0')
{
if ((*tptr == '&')&&(*(char *)(tptr + 1) == '{'))
{
start = tptr;
break;
}
tptr++;
}
if (start == NULL)
{
return(FALSE);
}
tptr = (char *)(start + 2);
while (*tptr != '\0')
{
if ((*tptr == '}')&&(*(char *)(tptr + 1) == ';'))
{
end = tptr;
break;
}
tptr++;
}
if (end == NULL)
{
return(FALSE);
}
end = (char *)(end + 1);
*expr_start = start;
*expr_end = end;
return(TRUE);
}
static char *
lo_add_string(char *base, char *add)
{
char *new;
int32 base_len, add_len;
if (add == NULL)
{
return(base);
}
if (base == NULL)
{
new = XP_STRDUP(add);
return(new);
}
base_len = XP_STRLEN(base);
add_len = XP_STRLEN(add);
new = (char *)XP_ALLOC(base_len + add_len + 1);
if (new == NULL)
{
return(base);
}
XP_STRCPY(new, base);
XP_STRCAT(new, add);
XP_FREE(base);
return(new);
}
static char *
lo_eval_javascript_entities(MWContext *context, char *orig_value,
uint newline_count)
{
char *tptr;
char *str;
char *new_str;
int32 len;
char tchar;
Bool has_mocha;
char *start, *end;
if (orig_value == NULL)
{
return(NULL);
}
str = orig_value;
len = XP_STRLEN(str);
new_str = NULL;
tptr = str;
has_mocha = lo_FindMochaExpr(tptr, &start, &end);
while (has_mocha != FALSE)
{
char *expr_start, *expr_end;
if (start > tptr)
{
tchar = *start;
*start = '\0';
new_str = lo_add_string(new_str, tptr);
*start = tchar;
}
expr_start = (char *)(start + 2);
expr_end = (char *)(end - 1);
if (expr_end > expr_start)
{
char *eval_str;
tchar = *expr_end;
*expr_end = '\0';
eval_str = LM_EvaluateAttribute(context, expr_start,
newline_count + 1);
*expr_end = tchar;
new_str = lo_add_string(new_str, eval_str);
if (eval_str != NULL)
{
XP_FREE(eval_str);
}
}
tptr = (char *)(end + 1);
has_mocha = lo_FindMochaExpr(tptr, &start, &end);
}
if (tptr != str)
{
new_str = lo_add_string(new_str, tptr);
}
if (new_str == NULL)
{
new_str = str;
}
return(new_str);
}
void
lo_ConvertAllValues(MWContext *context, char **value_list, int32 list_len,
uint newline_count)
{
int32 i;
if (LM_CanDoJS(context) == FALSE)
{
return;
}
for (i=0; i < list_len; i++)
{
char *str;
char *new_str;
str = value_list[i];
if (str != NULL)
{
new_str = lo_eval_javascript_entities(context, str, newline_count);
if (new_str != str)
{
XP_FREE(str);
value_list[i] = new_str;
}
}
}
}
PA_Block
lo_FetchParamValue(MWContext *context, PA_Tag *tag, char *param_name)
{
PA_Block buff;
INTL_CharSetInfo c = LO_GetDocumentCharacterSetInfo(context);
buff = PA_FetchParamValue(tag, param_name, INTL_GetCSIWinCSID(c));
return(buff);
}
#include "prthread.h"
#include "prmon.h"
static PRMonitor * layout_lock_monitor = NULL;
static PRThread * layout_lock_owner = NULL;
static int layout_lock_count = 0;
/*
* Grab the lock around layout so that we can delete things / manipulate
* layout owned data structures in a separate thread
*/
void
LO_LockLayout()
{
if(!layout_lock_monitor)
layout_lock_monitor = PR_NewNamedMonitor("layout-lock");
PR_EnterMonitor(layout_lock_monitor);
while(TRUE) {
/* no current owner or owned by this thread */
if(layout_lock_owner == NULL ||
layout_lock_owner == PR_CurrentThread()) {
layout_lock_owner = PR_CurrentThread();
layout_lock_count++;
PR_ExitMonitor(layout_lock_monitor);
return;
}
/* owned by someone else -- wait till we can get it */
PR_Wait(layout_lock_monitor, PR_INTERVAL_NO_TIMEOUT);
}
}
/*
* Release the lock and wake up anyone who was waiting to get it if
* we are the last release of the lock from this thread
*/
void
LO_UnlockLayout()
{
PR_EnterMonitor(layout_lock_monitor);
#ifdef DEBUG
/* make sure someone doesn't try to free a lock they don't own */
XP_ASSERT(layout_lock_owner == PR_CurrentThread());
#endif
layout_lock_count--;
if(layout_lock_count == 0) {
layout_lock_owner = NULL;
PR_Notify(layout_lock_monitor);
}
PR_ExitMonitor(layout_lock_monitor);
}
/*
* A (debugging) way to make sure the current thread doesn't have the
* layout lock
*/
Bool
LO_VerifyUnlockedLayout()
{
#ifdef DEBUG
Bool bHolding = TRUE;
if (layout_lock_monitor) {
PR_EnterMonitor(layout_lock_monitor);
bHolding = (layout_lock_owner != PR_CurrentThread());
PR_ExitMonitor(layout_lock_monitor);
}
return bHolding;
#else
return TRUE;
#endif
}
/*
* The mocha lock has been released, flush the blockage to see if
* we can get our blocked entities evaluated now.
*/
static void
lo_JSLockReleased(void * data)
{
MWContext * context = (MWContext *) data;
lo_TopState * top_state;
top_state = lo_FetchTopState(XP_DOCID(context));
if (!top_state)
return;
/* free the fake element we created earlier */
lo_FreeElement(context, top_state->layout_blocking_element, FALSE);
/* flush the blockage */
lo_UnblockLayout(context, top_state);
}
/*
* see if there are any &{} constructs for this tag. If so,
* convert them now, if we can't convert them (since we couldn't
* get the mocha lock, for example) return FALSE
*/
Bool
lo_ConvertMochaEntities(MWContext * context, lo_DocState *state, PA_Tag * tag)
{
char *tptr;
char *str;
char *new_str;
int32 len;
char tchar;
Bool has_mocha;
char *start, *end;
int32 cur_layer_id;
PA_LOCK(str, char *, tag->data);
len = tag->data_len;
if (LM_CanDoJS(context) == FALSE)
return TRUE;
new_str = NULL;
tptr = str;
has_mocha = lo_FindMochaExpr(tptr, &start, &end);
if (has_mocha == FALSE)
return TRUE;
/* attempt to lock JS */
if (!LM_AttemptLockJS(lo_JSLockReleased, context))
return FALSE;
/*
* Make sure that the current layer and all its ancestors have
* been reflected and that the current layer has been set as the
* active layer, since we want to ensure correct scoping and there's
* no way to know that the reflect event has reached Mocha yet.
* Note that reflecting the object multiple times is safe, since the
* reflection code is idempotent.
*/
cur_layer_id = lo_CurrentLayerId(state);
if (cur_layer_id != LO_DOCUMENT_LAYER_ID) {
CL_Layer *layer, *parent;
int32 child_layer_id = cur_layer_id;
int32 parent_layer_id;
do {
layer = LO_GetLayerFromId(context, child_layer_id);
parent = CL_GetLayerParent(layer);
parent_layer_id = LO_GetIdFromLayer(context, parent);
LM_ReflectLayer(context, cur_layer_id, parent_layer_id, NULL);
child_layer_id = parent_layer_id;
} while (child_layer_id != LO_DOCUMENT_LAYER_ID);
}
LM_SetActiveLayer(context, cur_layer_id);
while (has_mocha != FALSE)
{
char *expr_start, *expr_end;
if (start > tptr)
{
tchar = *start;
*start = '\0';
new_str = lo_add_string(new_str, tptr);
*start = tchar;
}
expr_start = (char *)(start + 2);
expr_end = (char *)(end - 1);
if (expr_end > expr_start)
{
char *eval_str;
tchar = *expr_end;
*expr_end = '\0';
if (state->top_state && state->top_state->nurl) {
LM_SetDecoderStream(context, NULL,
state->top_state->nurl,
JS_FALSE);
}
eval_str = LM_EvaluateAttribute(context, expr_start,
tag->newline_count + 1);
*expr_end = tchar;
new_str = lo_add_string(new_str, eval_str);
if (eval_str != NULL)
{
XP_FREE(eval_str);
}
}
tptr = (char *)(end + 1);
has_mocha = lo_FindMochaExpr(tptr, &start, &end);
}
if (tptr != str)
{
new_str = lo_add_string(new_str, tptr);
}
PA_FREE(tag->data);
tag->data = (PA_Block) new_str;
tag->data_len = XP_STRLEN((char *) tag->data);
PA_UNLOCK(tag->data);
LM_UnlockJS();
return TRUE;
}
/* Called from front ends as a threadsafe way to update values of text fields. */
void
LO_UpdateTextData(lo_FormElementTextData * textData, const char * text) {
LO_LockLayout();
if(textData->current_text)
XP_FREE(textData->current_text);
textData->current_text = (PA_Block) XP_STRDUP(text);
LO_UnlockLayout();
}
LO_TableStruct *lo_GetParentTable(MWContext *pContext, LO_Element *pElement)
{
LO_Element *tptr;
if( !pElement )
return NULL;
if( pElement->lo_any.type == LO_CELL )
{
/* Supplied element is already a cell, start table search with it */
tptr = pElement;
} else {
if( !pContext )
return NULL;
/* First find the cell that contains the given element */
tptr = (LO_Element*)lo_GetParentCell(pContext, pElement);
}
/* Simply search back from current cell to find table element */
while( tptr )
{
if( tptr->lo_any.type == LO_TABLE )
{
return (LO_TableStruct*)tptr;
}
tptr = tptr->lo_any.prev;
}
return NULL;
}
/* Recusively search for cell struct containing the given element
* If table is found, it searches into that as well
*/
LO_CellStruct *lo_GetCellContainingElement( LO_Element *pElement, LO_CellStruct *pFirstCell )
{
LO_CellStruct *pNestedCell = NULL;
LO_CellStruct *pFirstNestedCell;
LO_Element *cell_list_ptr;
LO_CellStruct *pLoCell;
pLoCell = pFirstCell;
if( pLoCell == NULL )
return NULL;
do {
cell_list_ptr = pLoCell->cell_list;
while( cell_list_ptr )
{
if( cell_list_ptr == pElement )
{
/* We found the element - return cell containing it */
return pLoCell;
}
if( cell_list_ptr->type == LO_TABLE )
{
/* We found a nested table
* Get first cell in it and search through it
*/
pFirstNestedCell = (LO_CellStruct*)cell_list_ptr->lo_any.next;
XP_ASSERT(pFirstNestedCell->type == LO_CELL);
pNestedCell = lo_GetCellContainingElement(pElement, pFirstNestedCell);
if( pNestedCell )
{
/* We found cell in nested table */
return pNestedCell;
}
}
cell_list_ptr = cell_list_ptr->lo_any.next;
}
pLoCell = (LO_CellStruct*)pLoCell->next;
} /* End when there's no more cells or we hit linefeed at end of line (top-level table)*/
while (pLoCell && pLoCell->type == LO_CELL);
return NULL;
}
/* Search algorithm is very similar to CEditBuffer::GetTableHitRegion()
* (which is similar to lo_XYtoDocumentElement except it finds only cells)
* Search for the Cell that contains pElement
*/
LO_CellStruct *lo_GetParentCell(MWContext * pContext, LO_Element *pElement)
{
LO_Element *tptr;
int32 doc_id;
lo_TopState *top_state;
lo_DocState *state;
XP_Bool in_table;
int32 line;
LO_Element *end_ptr;
LO_Element *tptrTable;
int32 x, y, t_width, t_height;
doc_id = XP_DOCID(pContext);
top_state = lo_FetchTopState(doc_id);
/* Supplied element is a cell - return it ??? */
if( pElement && pElement->type == LO_CELL )
return (LO_CellStruct*)pElement;
if( pContext == NULL || pElement == NULL || top_state == NULL || top_state->doc_state == NULL )
return NULL;
state = top_state->doc_state;
tptrTable = NULL;
in_table = FALSE;
/* Find the line that contains the supplied element
* This defines the top-level table
*/
x = pElement->lo_any.x+1;
y = pElement->lo_any.y+1;
line = lo_PointToLine(pContext, state, x, y);
lo_GetLineEnds(pContext, state, line, &tptr, &end_ptr);
while (tptr != end_ptr)
{
t_width = tptr->lo_any.width;
t_height = tptr->lo_any.height;
if (t_width <= 0)
{
t_width = 1;
}
if ((y >= tptr->lo_any.y) &&
(y < tptr->lo_any.y + tptr->lo_any.y_offset + t_height) &&
(x >= tptr->lo_any.x) &&
(x < (tptr->lo_any.x + tptr->lo_any.x_offset + t_width)))
{
/* We are only interested in finding cells */
if (tptr->type == LO_CELL)
{
/* Search through the cell's element list,
* Including all nested tables in that cell
*/
LO_CellStruct * pLoCell = lo_GetCellContainingElement(pElement, (LO_CellStruct*)tptr);
/* We found it - done */
if( pLoCell )
return pLoCell;
}
}
tptr = tptr->lo_any.next;
}
/* Failed to find element */
return NULL;
}
/* Find the first cell with with closest left border x-value <= than the given x
* value or, if bGetColumn=FALSE, find the cell with closest top border
* y-value <= than the given Y value. Also returns the pointer to the
* last LO element so we can search for other cells until pEndElement is reached.
*/
LO_Element* lo_GetFirstCellInColumnOrRow(MWContext *pContext, LO_Element *pElement, int32 x, int32 y, XP_Bool bGetColumn, LO_Element **ppLastCellInTable)
{
LO_Element *pFirstCell = NULL;
LO_Element *pLastCellInTable = NULL;
LO_Element *tptr = NULL;
int32 closest = 0;
if( pElement->type == LO_TABLE )
{
/* Start at first element after the table */
tptr = pElement->lo_any.next;
} else {
if( pElement->type == LO_CELL )
{
/* Element is a cell */
tptr = pElement;
} else {
/* Get parent cell of supplied element */
tptr = (LO_Element*)lo_GetParentCell(pContext, pElement);
}
if( !tptr )
return NULL;
/* Search back until we are at first cell in table */
while ( (tptr->lo_any.prev)->type != LO_TABLE )
{
tptr = tptr->lo_any.prev;
}
}
/* Scan all cells to find first and last */
do {
if( tptr->type == LO_CELL )
{
if( bGetColumn && tptr->lo_any.x <= x &&
tptr->lo_any.x > closest )
{
/* We found a cell candidate */
closest = tptr->lo_any.x;
pFirstCell = tptr;
} else if( !bGetColumn && tptr->lo_any.y <= y &&
tptr->lo_any.y > closest )
{
closest = tptr->lo_any.y;
pFirstCell = tptr;
}
pLastCellInTable = tptr;
}
tptr = tptr->lo_any.next;
/* Table ends at linefeed (top level) or null element (nested table) */
} while (tptr && tptr->type != LO_LINEFEED );
/* Return last cell element encountered */
if( ppLastCellInTable )
*ppLastCellInTable = pLastCellInTable;
return pFirstCell;
}
/* Assumptions;
* Given a LO_CellStruct, the table element defines the begining of table
* and the last cell is that whose "next" pointer is NULL (nested table)
* or a linefeed element (top-level table)
*/
LO_Element *lo_GetFirstAndLastCellsInTable(MWContext *pContext, LO_Element *pElement, LO_Element **ppLastCell)
{
LO_Element *tptr = NULL;
LO_Element *pFirstCell = NULL;
LO_Element *pLastCell = NULL;
LO_Element *pCurrentCell = NULL;
if(pContext == NULL || pElement == NULL )
return NULL;
if( pElement->type == LO_CELL )
{
pCurrentCell = pElement;
}
else if( pElement->type == LO_TABLE )
{
/* First cell SHOULD be next element, but let's be sure */
pCurrentCell = pElement->lo_table.next;
while(pCurrentCell->type != LO_CELL)
{
pCurrentCell = pCurrentCell->lo_any.next;
}
} else {
pCurrentCell = (LO_Element*)lo_GetParentCell(pContext, pElement);
}
if( pCurrentCell == NULL )
return NULL;
/* Scan backwards until we hit the table element
* that's before all the cells
*/
tptr = pCurrentCell;
while (tptr && (tptr->lo_any.prev)->type != LO_TABLE )
{
tptr = tptr->lo_any.prev;
}
/* Scan forward to find last cell -- next is null or line-feed element */
do {
if( tptr->type == LO_CELL )
{
if( !pFirstCell )
pFirstCell = tptr;
pLastCell = tptr;
}
tptr = tptr->lo_any.next;
} while (tptr && tptr->type != LO_LINEFEED);
/* Return last cell element encountered */
if( ppLastCell )
*ppLastCell = pLastCell;
return pFirstCell;
}
LO_Element *lo_GetFirstAndLastCellsInColumnOrRow(LO_Element *pCellElement, LO_Element **ppLastCell, XP_Bool bInColumn )
{
LO_Element *tptr = NULL;
LO_Element *pFirstCell = NULL;
LO_Element *pLastCell = NULL;
if(pCellElement == NULL || pCellElement->type != LO_CELL)
return NULL;
/* Scan backwards until we hit the table element
* that's before all the cells
*/
tptr = pCellElement;
while (tptr && (tptr->lo_any.prev)->type != LO_TABLE )
{
tptr = tptr->lo_any.prev;
}
/* Scan forward to find first and last cells,
* based on sharing left edge (column) or top (row)
*/
do {
if( tptr->type == LO_CELL )
{
if( (bInColumn && pCellElement->lo_any.x == tptr->lo_any.x) ||
(!bInColumn && pCellElement->lo_any.y == tptr->lo_any.y) )
{
if( !pFirstCell )
pFirstCell = tptr;
pLastCell = tptr;
}
}
tptr = tptr->lo_any.next;
} while (tptr && tptr->type != LO_LINEFEED);
/* Return last cell element encountered */
if( ppLastCell )
*ppLastCell = pLastCell;
return pFirstCell;
}
XP_Bool lo_AllCellsSelectedInColumnOrRow( LO_CellStruct *pCell, XP_Bool bInColumn )
{
LO_Element *pFirstCell;
LO_Element *pLastCell = NULL;
LO_Element *tptr;
/* Get first and last cells in row or column */
pFirstCell = lo_GetFirstAndLastCellsInColumnOrRow( (LO_Element*)pCell, &pLastCell, bInColumn );
if( !pFirstCell || !pLastCell )
return FALSE;
tptr = pFirstCell;
do {
if( tptr->type == LO_CELL )
{
if( (bInColumn && pCell->x == tptr->lo_any.x) ||
(!bInColumn && pCell->y == tptr->lo_any.y) )
{
/* If any cell is not selected, return FALSE */
if( !(tptr->lo_cell.ele_attrmask & LO_ELE_SELECTED) )
return FALSE;
}
}
/* Edge case of only 1 cell in row/col */
if( tptr != pLastCell )
tptr = tptr->lo_any.next;
} while (tptr && tptr != pLastCell);
return TRUE;
}
int32 lo_GetNumberOfCellsInTable(LO_TableStruct *pTable )
{
int32 iCount = 0;
if( pTable )
{
LO_Element *tptr = (LO_Element*)pTable;
while( tptr && tptr->type != LO_LINEFEED )
{
if( tptr->type == LO_CELL)
iCount++;
tptr = tptr->lo_any.next;
}
}
return iCount;
}
/* Subtract borders and inter-cell spacing to get the available table width
* to use when cell width in HTML is "percent of table"
*/
int32 lo_CalcTableWidthForPercentMode(LO_Element *pCellElement)
{
LO_Element *pLastCell;
LO_Element *pFirstCell;
LO_Element *pCell;
int32 iWidth;
XP_Bool bDone;
/* Never return 0 to avoid divide by zero errors */
if( !pCellElement || pCellElement->type != LO_CELL )
return -1;
iWidth = 0;
/* We calculate the width by simply adding up widths of all cells in the row */
pFirstCell = lo_GetFirstAndLastCellsInColumnOrRow(pCellElement, &pLastCell, FALSE );
pCell = pFirstCell;
if( pCell && pLastCell )
{
bDone = FALSE;
while(!bDone)
{
if( pCell == pLastCell )
bDone = TRUE;
/* Add widths of all cells in the row (must have same top) */
if( pCell->type == LO_CELL &&
(pCell->lo_any.y == pFirstCell->lo_any.y) )
{
iWidth += pCell->lo_cell.width;
}
pCell = pCell->lo_any.next;
}
}
return (iWidth > 0) ? iWidth : -1;
}
XP_Bool LO_IsEmptyCell(LO_CellStruct *cell)
{
if ( cell )
{
LO_Element *element = cell->cell_list;
/* Unlikely, but if nothing inside cell, we're empty! */
if(element)
{
LO_Element *pNext = element->lo_any.next;
while(element)
{
/* Any non-text element except linefeed is not "empty"
* and check for text length
* Length of any element is 1. Length of text = real length,
* (but we don't want to consider linefeeds)
*/
if( element->type != LO_LINEFEED && lo_GetElementLength(element) > 0 )
{
return FALSE;
}
element = element->lo_any.next;
}
}
}
return TRUE;
}
/* The LO_CellStruct.width does not include border, cell padding etc and is complicated
* by Column Span as well. Calculate the value to use for <TD WIDTH> param that
* would result in current pCellElement->lo_cell.width during the next layout
*/
int32 lo_GetCellTagWidth(LO_Element *pCellElement)
{
/* XP_ASSERT(pCellElement->type == LO_CELL); */ /* Why doesn't this compile! */
int32 iColSpan = lo_GetColSpan(pCellElement);
int32 iPadding = iColSpan * 2 * (pCellElement->lo_cell.border_width +
lo_GetCellPadding(pCellElement));
/* Cells spanning across a border include the inter-cell space as well */
if( iColSpan > 1 )
iPadding += (iColSpan - 1) * pCellElement->lo_cell.inter_cell_space;
return pCellElement->lo_cell.width - iPadding;
}
/* Similar calculation for height. Unfortunately, there are differences from width.
* e.g., the cell border must be subtracted from width, but not height! (a bug???)
*/
int32 lo_GetCellTagHeight(LO_Element *pCellElement)
{
/*XP_ASSERT(pCellElement->type == LO_CELL);*/
int32 iRowSpan = lo_GetRowSpan(pCellElement);
int32 iPadding = iRowSpan * 2 * (/*pCellElement->lo_cell.border_width + */
lo_GetCellPadding(pCellElement));
if( iRowSpan > 1 )
iPadding += (iRowSpan - 1) * pCellElement->lo_cell.inter_cell_space;
return pCellElement->lo_cell.height - iPadding;
}
/* Helpers to access the lo_TableCell members now accessible through the LO_CellStruct */
int32 lo_GetRowSpan(LO_Element *pCellElement)
{
XP_ASSERT(pCellElement->type == LO_CELL);
if( pCellElement && pCellElement->lo_any.type == LO_CELL &&
pCellElement->lo_cell.table_cell )
{
return ((lo_TableCell*)pCellElement->lo_cell.table_cell)->rowspan;
}
/* Should never fail, but since default value is 1,
this will tell caller we failed */
return 0;
}
int32 lo_GetColSpan(LO_Element *pCellElement)
{
XP_ASSERT(pCellElement && pCellElement->type == LO_CELL);
if( pCellElement && pCellElement->lo_any.type == LO_CELL &&
pCellElement->lo_cell.table_cell )
{
return ((lo_TableCell*)pCellElement->lo_cell.table_cell)->colspan;
}
return 0;
}
/* TODO: CHANGE THIS TO GET LEFT, TOP, RIGHT, OR BOTTOM SEPARATELY? */
int32 lo_GetCellPadding(LO_Element *pCellElement)
{
XP_ASSERT(pCellElement && pCellElement->type == LO_CELL);
if( pCellElement && pCellElement->type == LO_CELL &&
pCellElement->lo_cell.table )
{
return ((lo_TableRec*)pCellElement->lo_cell.table)->inner_top_pad;
}
return 0;
}
LO_Element * lo_GetLastElementInList( LO_Element *eleList )
{
LO_Element *retEle = NULL;
if (eleList != NULL)
{
while (eleList->lo_any.next != NULL)
eleList = eleList->lo_any.next;
retEle = eleList;
}
return retEle;
}
#ifdef DOM
/* Checks the layout element to see if the element is enclosed within <SPAN> */
Bool LO_IsWithinSpan( LO_Element *ele )
{
Bool isInSpan = FALSE;
if (ele)
{
switch (ele->type) {
case LO_TEXT:
isInSpan = ele->lo_text.ele_attrmask & LO_ELE_IN_SPAN ? TRUE : FALSE;
break;
case LO_IMAGE:
isInSpan = ele->lo_image.ele_attrmask & LO_ELE_IN_SPAN ? TRUE : FALSE;
break;
case LO_FORM_ELE:
isInSpan = ele->lo_form.ele_attrmask & LO_ELE_IN_SPAN ? TRUE : FALSE;
break;
case LO_EMBED:
isInSpan = ele->lo_embed.ele_attrmask & LO_ELE_IN_SPAN ? TRUE : FALSE;
break;
case LO_JAVA:
isInSpan = ele->lo_java.ele_attrmask & LO_ELE_IN_SPAN ? TRUE : FALSE;
break;
case LO_BUILTIN:
isInSpan = ele->lo_builtin.ele_attrmask & LO_ELE_IN_SPAN ? TRUE : FALSE;
break;
}
}
return isInSpan;
}
static void lo_SetInSpanAttribute( LO_Element *ele )
{
switch (ele->type) {
case LO_TEXT:
ele->lo_text.ele_attrmask |= LO_ELE_IN_SPAN;
break;
case LO_IMAGE:
ele->lo_image.ele_attrmask |= LO_ELE_IN_SPAN;
break;
case LO_FORM_ELE:
ele->lo_form.ele_attrmask |= LO_ELE_IN_SPAN;
break;
case LO_EMBED:
ele->lo_embed.ele_attrmask |= LO_ELE_IN_SPAN;
break;
#ifdef JAVA
case LO_JAVA:
ele->lo_java.ele_attrmask |= LO_ELE_IN_SPAN;
break;
#endif
}
}
#endif
#ifdef PROFILE
#pragma profile off
#endif
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