netscape-revival
lib/layout/layout.h
#include "xp_core.h"
#include "net.h"
#define SCARY_LEAK_FIX 1
#ifdef MOCHA
#define MOCHA_CACHES_WRITES 1
#endif
#define MEMORY_ARENAS 1
#define NEXT_ELEMENT state->top_state->element_id++
#define LINE_BUF_INC 200
#define FONT_HASH_SIZE 127
#define DEFAULT_BASE_FONT_SIZE 3
#define PRE_TEXT_NO 0
#define PRE_TEXT_YES 1
#define PRE_TEXT_WRAP 2
#define SUBDOC_NOT 0
#define SUBDOC_IS 1
#define SUBDOC_CELL 2
#define SUBDOC_CAPTION 3
#define LO_ALIGN_DEFAULT -1
#define LO_ALIGN_CENTER 0
#define LO_ALIGN_LEFT 1
#define LO_ALIGN_RIGHT 2
#define LO_ALIGN_TOP 3
#define LO_ALIGN_BOTTOM 4
#define LO_ALIGN_BASELINE 5
#define LO_ALIGN_NCSA_CENTER 6
#define LO_ALIGN_NCSA_BOTTOM 7
#define LO_ALIGN_NCSA_TOP 8
#ifdef EDITOR
extern char* lo_alignStrings[];
#endif
#define S_FORM_TYPE_TEXT "text"
#define S_FORM_TYPE_RADIO "radio"
#define S_FORM_TYPE_CHECKBOX "checkbox"
#define S_FORM_TYPE_HIDDEN "hidden"
#define S_FORM_TYPE_SUBMIT "submit"
#define S_FORM_TYPE_RESET "reset"
#define S_FORM_TYPE_PASSWORD "password"
#define S_FORM_TYPE_BUTTON "button"
#define S_FORM_TYPE_IMAGE "image"
#define S_FORM_TYPE_FILE "file"
#define S_FORM_TYPE_JOT "jot"
#define S_FORM_TYPE_READONLY "readonly"
#define S_AREA_SHAPE_DEFAULT "default"
#define S_AREA_SHAPE_RECT "rect"
#define S_AREA_SHAPE_CIRCLE "circle"
#define S_AREA_SHAPE_POLY "poly"
#define S_AREA_SHAPE_POLYGON "polygon" /* maps to AREA_SHAPE_POLY */
#define AREA_SHAPE_UNKNOWN 0
#define AREA_SHAPE_DEFAULT 1
#define AREA_SHAPE_RECT 2
#define AREA_SHAPE_CIRCLE 3
#define AREA_SHAPE_POLY 4
extern LO_Color lo_master_colors[];
typedef struct lo_NameList_struct {
int32 x, y;
LO_Element *element;
PA_Block name; /* really a (char *) */
struct lo_NameList_struct *next;
} lo_NameList;
typedef struct lo_SavedFormListData_struct {
XP_Bool valid;
int32 data_index;
int32 data_count;
PA_Block data_list; /* really a (LO_FormElementData **) */
struct lo_SavedFormListData_struct *next;
} lo_SavedFormListData;
typedef void (*lo_FreeProc)(MWContext*, void*);
typedef struct lo_EmbedDataElement {
void *data;
lo_FreeProc freeProc;
} lo_EmbedDataElement;
typedef struct lo_SavedEmbedListData_struct {
int32 embed_count;
PA_Block embed_data_list; /* really a (lo_EmbedDataElement **) */
} lo_SavedEmbedListData;
typedef struct lo_SavedGridData_struct {
int32 main_width;
int32 main_height;
struct lo_GridRec_struct *the_grid;
} lo_SavedGridData;
typedef struct lo_MarginStack_struct {
int32 margin;
int32 y_min, y_max;
struct lo_MarginStack_struct *next;
} lo_MarginStack;
typedef struct lo_FontStack_struct {
int32 tag_type;
LO_TextAttr *text_attr;
struct lo_FontStack_struct *next;
} lo_FontStack;
typedef struct lo_AlignStack_struct {
intn type;
int32 alignment;
struct lo_AlignStack_struct *next;
} lo_AlignStack;
typedef struct lo_ListStack_struct {
intn level;
int type;
int32 value;
Bool compact;
int bullet_type;
int32 old_left_margin;
int32 old_right_margin;
struct lo_ListStack_struct *next;
} lo_ListStack;
typedef struct lo_FormData_struct {
intn id;
PA_Block action;
PA_Block encoding;
PA_Block window_target;
int32 method;
int32 form_ele_cnt;
int32 form_ele_size;
PA_Block form_elements; /* really a (LO_Element **) */
struct lo_FormData_struct *next;
#ifdef MOCHA
PA_Block name;
struct MochaObject *mocha_object;
#endif
} lo_FormData;
typedef struct lo_TableCell_struct {
Bool cell_done;
Bool nowrap;
Bool is_a_header;
int32 percent_width, percent_height;
int32 min_width, max_width;
int32 height, baseline;
int32 rowspan, colspan;
LO_SubDocStruct *cell_subdoc;
struct lo_TableCell_struct *next;
} lo_TableCell;
typedef struct lo_TableRow_struct {
Bool row_done;
Bool has_percent_width_cells;
LO_Color *bg_color; /* default for cells to inherit */
int32 cells;
int32 vert_alignment;
int32 horiz_alignment;
lo_TableCell *cell_list;
lo_TableCell *cell_ptr;
struct lo_TableRow_struct *next;
} lo_TableRow;
typedef struct lo_TableCaption_struct {
int32 vert_alignment;
int32 horiz_alignment;
int32 min_width, max_width;
int32 height;
int32 rowspan, colspan;
LO_SubDocStruct *subdoc;
} lo_TableCaption;
typedef struct lo_table_span_struct {
int32 dim, min_dim;
int32 span;
struct lo_table_span_struct *next;
} lo_table_span;
typedef struct lo_TableRec_struct {
intn draw_borders;
Bool has_percent_width_cells;
Bool has_percent_height_cells;
LO_Color *bg_color; /* default for cells to inherit */
int32 rows, cols;
int32 width, height;
int32 inner_cell_pad;
int32 inter_cell_pad;
lo_table_span *width_spans;
lo_table_span *width_span_ptr;
lo_table_span *height_spans;
lo_table_span *height_span_ptr;
lo_TableCaption *caption;
LO_TableStruct *table_ele;
lo_TableRow *row_list;
lo_TableRow *row_ptr;
} lo_TableRec;
typedef struct lo_MultiCol_struct {
LO_Element *end_last_line;
int32 start_ele;
int32 start_line, end_line;
int32 start_y, end_y;
int32 start_x;
int32 cols;
int32 col_width;
int32 orig_margin;
int32 orig_min_width;
int32 orig_display_blocking_element_y;
int32 gutter;
Bool orig_display_blocked;
struct lo_MultiCol_struct *next;
} lo_MultiCol;
#define LO_PERCENT_NORMAL 0
#define LO_PERCENT_FREE 1
#define LO_PERCENT_FIXED 2
typedef struct lo_GridPercent_struct {
uint8 type;
int32 value;
} lo_GridPercent;
typedef struct lo_GridHistory_struct {
void *hist; /* really a SHIST history pointer */
int32 position;
} lo_GridHistory;
typedef struct lo_GridCellRec_struct {
int32 x, y;
int32 width, height;
int32 margin_width, margin_height;
intn width_percent;
intn height_percent;
char *url;
char *name;
MWContext *context;
void *history; /* really a SHIST history pointer */
#ifdef NEW_FRAME_HIST
void *hist_list; /* really a (XP_List *) */
lo_GridHistory *hist_array;
int32 hist_indx;
#endif /* NEW_FRAME_HIST */
int8 scrolling;
Bool resizable;
Bool no_edges;
int16 edge_size;
int8 color_priority;
LO_Color *border_color;
struct lo_GridEdge_struct *side_edges[4]; /* top, bottom, left, right */
struct lo_GridCellRec_struct *next;
struct lo_GridRec_struct *subgrid;
} lo_GridCellRec;
typedef struct lo_GridEdge_struct {
int32 x, y;
int32 width, height;
Bool is_vertical;
int32 left_top_bound;
int32 right_bottom_bound;
int32 cell_cnt;
int32 cell_max;
lo_GridCellRec **cell_array;
LO_EdgeStruct *fe_edge;
struct lo_GridEdge_struct *next;
} lo_GridEdge;
typedef struct lo_GridRec_struct {
int32 main_width, main_height;
#ifdef NEW_FRAME_HIST
int32 current_hist, max_hist, hist_size;
#endif /* NEW_FRAME_HIST */
int32 grid_cell_border;
int32 grid_cell_min_dim;
int32 rows, cols;
lo_GridPercent *row_percents;
lo_GridPercent *col_percents;
lo_GridCellRec *cell_list;
lo_GridCellRec *cell_list_last;
int32 cell_count;
Bool no_edges;
int16 edge_size;
int8 color_priority;
LO_Color *border_color;
lo_GridEdge *edge_list;
struct lo_GridRec_struct *subgrid;
} lo_GridRec;
typedef struct lo_MapRec_struct {
char *name;
struct lo_MapAreaRec_struct *areas;
struct lo_MapAreaRec_struct *areas_last;
struct lo_MapRec_struct *next;
} lo_MapRec;
typedef struct lo_MapAreaRec_struct {
int16 type;
int16 alt_len;
PA_Block alt;
int32 *coords;
int32 coord_cnt;
LO_AnchorData *anchor;
struct lo_MapAreaRec_struct *next;
} lo_MapAreaRec;
#ifdef HTML_CERTIFICATE_SUPPORT
typedef struct lo_Certificate_struct {
PA_Block name; /* really a (char *) */
void *cert; /* really a (char *) */
struct lo_Certificate_struct *next;
} lo_Certificate;
#endif /* HTML_CERTIFICATE_SUPPORT */
typedef struct lo_TopState_struct lo_TopState;
#ifdef TEST_16BIT
#define XP_WIN16
#endif /* TEST_16BIT */
typedef struct lo_DocState_struct {
lo_TopState *top_state;
PA_Tag *subdoc_tags; /* tags that created this subdoc */
PA_Tag *subdoc_tags_end; /* End of subdoc tags list */
int32 base_x, base_y; /* upper left of document */
int32 x, y; /* upper left of element in progress */
int32 width; /* width of element in progress */
int32 win_width;
int32 win_height;
int32 max_width; /* width of widest line so far. */
int32 min_width; /* minimum possible line width */
int32 break_holder; /* holder for last break position width */
int32 line_num; /* line number of the next line to be placed */
intn linefeed_state;
int8 preformatted; /* processing preformatted (maybe wrap) text */
Bool breakable; /* Working on a breakable element */
Bool delay_align; /* in subdoc, delay aligning lines */
Bool display_blocked; /* do not display during layout */
Bool in_paragraph; /* inside an HTML 3.0 paragraph container */
int32 display_blocking_element_id;
int32 display_blocking_element_y;
int32 win_top;
int32 win_bottom;
int32 win_left;
int32 win_right;
int32 left_margin;
int32 right_margin;
lo_MarginStack *left_margin_stack;
lo_MarginStack *right_margin_stack;
int32 text_divert; /* the tag type of a text diverter (like P_TITLE) */
#ifdef XP_WIN16
intn larray_array_size;
XP_Block larray_array; /* really a (XP_Block *) */
#endif /* XP_WIN16 */
intn line_array_size;
XP_Block line_array; /* really a (LO_Element **) */
LO_Element *line_list; /* Element list for the current line so far */
LO_Element *end_last_line; /* Element at end of last line */
lo_NameList *name_list; /* list of positions of named anchors */
LO_Element *float_list; /* Floating element list for the current doc */
intn base_font_size; /* size of font at bottom of font stack */
lo_FontStack *font_stack;
lo_AlignStack *align_stack;
lo_ListStack *list_stack;
LO_TextInfo text_info; /* for text of last text element created */
/* this is a buffer for a single (currently processed) line of text */
PA_Block line_buf; /* lock to a (char *) */
int32 line_buf_len;
int32 line_buf_size;
int32 baseline;
int32 line_height;
int32 default_line_height;
int32 break_pos; /* position in middle of current element */
int32 break_width;
Bool last_char_CR;
Bool trailing_space;
Bool at_begin_line;
LO_TextStruct *old_break;
int32 old_break_pos; /* in middle of older element on this line */
int32 old_break_width;
PA_Block current_named_anchor; /* lock to a (char *) */
LO_AnchorData *current_anchor;
intn cur_ele_type;
LO_Element *current_ele; /* element in process, no end tag yet */
LO_JavaAppStruct *current_java; /* java applet in process, no end tag yet */
lo_TableRec *current_table;
lo_GridRec *current_grid;
lo_MultiCol *current_multicol;
Bool start_in_form; /* Was in a form at start of (sub)doc */
intn form_id; /* first form entering this (sub)doc */
int32 form_ele_cnt; /* first form element entering this (sub)doc */
int32 form_data_index; /* first form data entering this (sub)doc */
int32 embed_count_base; /* number of embeds before beginning this (sub)doc */
int32 url_count_base; /* number of anchors before beginning this (sub)doc */
Bool must_relayout_subdoc;
Bool allow_percent_width;
Bool allow_percent_height;
intn is_a_subdoc;
int32 current_subdoc;
XP_Block sub_documents; /* really a lo_DocState ** array */
struct lo_DocState_struct *sub_state;
LO_Element *current_cell;
Bool extending_start;
LO_Element *selection_start;
int32 selection_start_pos;
LO_Element *selection_end;
int32 selection_end_pos;
LO_Element *selection_new;
int32 selection_new_pos;
LO_Color text_fg;
LO_Color text_bg;
LO_Color anchor_color;
LO_Color visited_anchor_color;
LO_Color active_anchor_color;
#ifdef EDITOR
ED_Element *edit_current_element;
int edit_current_offset;
Bool edit_force_offset;
Bool edit_relayout_display_blocked;
#endif
#ifdef MOCHA
Bool in_relayout; /* true if we're in lo_RelayoutSubdoc */
#endif
} lo_DocState;
#ifdef TEST_16BIT
#undef XP_WIN16
#endif /* TEST_16BIT */
#define STATE_DEFAULT_FG_RED(state) ((state)->text_fg.red)
#define STATE_DEFAULT_FG_GREEN(state) ((state)->text_fg.green)
#define STATE_DEFAULT_FG_BLUE(state) ((state)->text_fg.blue)
#define STATE_DEFAULT_BG_RED(state) ((state)->text_bg.red)
#define STATE_DEFAULT_BG_GREEN(state) ((state)->text_bg.green)
#define STATE_DEFAULT_BG_BLUE(state) ((state)->text_bg.blue)
#define STATE_UNVISITED_ANCHOR_RED(state) ((state)->anchor_color.red)
#define STATE_UNVISITED_ANCHOR_GREEN(state) ((state)->anchor_color.green)
#define STATE_UNVISITED_ANCHOR_BLUE(state) ((state)->anchor_color.blue)
#define STATE_VISITED_ANCHOR_RED(state) ((state)->visited_anchor_color.red)
#define STATE_VISITED_ANCHOR_GREEN(state) ((state)->visited_anchor_color.green)
#define STATE_VISITED_ANCHOR_BLUE(state) ((state)->visited_anchor_color.blue)
#define STATE_SELECTED_ANCHOR_RED(state) ((state)->active_anchor_color.red)
#define STATE_SELECTED_ANCHOR_GREEN(state) ((state)->active_anchor_color.green)
#define STATE_SELECTED_ANCHOR_BLUE(state) ((state)->active_anchor_color.blue)
#ifdef MEMORY_ARENAS
typedef struct lo_arena_struct {
struct lo_arena_struct *next;
char *limit;
char *avail;
} lo_arena;
#endif /* MEMORY_ARENAS */
/*
** This is just like SHIST_SavedData except the fields are more strictly
** typed.
*/
typedef struct lo_SavedData {
lo_SavedFormListData* FormList; /* Data for all form elements in doc */
lo_SavedEmbedListData* EmbedList; /* session data for all embeds and applets in doc */
lo_SavedGridData* Grid; /* saved for grid history. */
#ifdef MOCHA
PA_Block OnLoad; /* JavaScript onload event handler source */
PA_Block OnUnload; /* JavaScript onunload event handler source */
PA_Block OnFocus; /* JavaScript onfocus event handler source */
PA_Block OnBlur; /* JavaScript onblur event handler source */
#endif
} lo_SavedData;
/*
* Top level state
*/
struct lo_TopState_struct {
#ifdef MEMORY_ARENAS
lo_arena *first_arena;
lo_arena *current_arena;
#endif /* MEMORY_ARENAS */
PA_Tag *tags; /* Held tags while layout is blocked */
PA_Tag **tags_end; /* End of held tags list */
LO_Element *backdrop_image;
PRPackedBool have_a_bg_url;
PRPackedBool doc_specified_bg;
PRPackedBool nothing_displayed;
PRPackedBool in_head; /* Still in the HEAD of the HTML doc. */
PRPackedBool in_body; /* In the BODY of the HTML doc. */
PRPackedBool scrolling_doc; /* Is this a special scrolling doc (hack) */
PRPackedBool have_title; /* set by first <TITLE> */
PRPackedBool in_form; /* true if in <FORM>...</FORM> */
char *unknown_head_tag; /* ignore content in this case if non-NULL */
char *base_target; /* Base target of urls in this document */
char *base_url; /* Base url of this document */
char *url; /* Real url of this document */
char *name_target; /* The #name part of the url */
int32 element_id;
LO_Element *layout_blocking_element;
intn layout_status;
LO_EmbedStruct *embed_list; /* embeds linked in reverse order */
LO_JavaAppStruct *applet_list; /* applets linked in reverse order */
lo_MapRec *map_list; /* list of maps in doc */
lo_MapRec *current_map; /* Current open MAP tag */
#ifdef MOCHA
LO_ImageStruct *image_list; /* list of images in doc */
LO_ImageStruct *last_image; /* last image in image_list */
uint32 image_count;
#endif
lo_FormData *form_list; /* list of forms in doc */
intn current_form_num;
int32 embed_count; /* master count of embeds in this document */
lo_SavedData savedData; /* layout data */
int32 total_bytes;
int32 current_bytes;
int32 layout_bytes;
int32 script_bytes;
intn layout_percent;
lo_GridRec *the_grid;
lo_GridRec *old_grid;
PRPackedBool is_grid; /* once a grid is started, ignore other tags */
PRPackedBool in_nogrids; /* special way to ignore tags in <noframes> */
PRPackedBool in_noembed; /* special way to ignore tags in <noembed> */
PRPackedBool in_noscript; /* special way to ignore tags in <noscript> */
PRPackedBool in_applet; /* special way to ignore tags in java applet */
PRPackedBool is_binary; /* hack for images instead of HTML doc */
PRPackedBool insecure_images; /* secure doc with insecure images */
PRPackedBool out_of_memory; /* ran out of memory mid-layout */
NET_ReloadMethod
force_reload; /* URL_Struct reload flag */
intn auto_scroll; /* Chat auto-scrolling layout, # of lines */
intn security_level; /* non-zero for secure docs. */
URL_Struct *nurl; /* the netlib url struct */
PA_Block font_face_array; /* really a (char **) */
intn font_face_array_len;
intn font_face_array_size;
XP_Block text_attr_hash; /* really a (LO_TextAttr **) */
#ifdef XP_WIN16
intn ulist_array_size;
XP_Block ulist_array; /* really a (XP_Block *) */
#endif /* XP_WIN16 */
XP_Block url_list; /* really a (LO_AnchorData **) PA_Block */
intn url_list_len;
intn url_list_size;
LO_Element *recycle_list; /* List of Elements to be reused */
LO_Element *trash; /* List of Elements to discard later */
lo_DocState *doc_state;
#ifdef EDITOR
ED_Buffer *edit_buffer;
#endif
/* jwz: moved outside of MOCHA ifdef */
PRPackedBool resize_reload; /* is this a resize-induced reload? */
#ifdef MOCHA
struct pa_DocData_struct *doc_data;
struct lo_ScriptState *script_state;
uint script_lineno; /* parser newline count at last <SCRIPT> tag */
int8 in_script; /* script type if in script, see below */
PRPackedBool mocha_mark;
PRPackedBool mocha_has_onload;
uint32 mocha_loading_applets_count;
uint32 mocha_loading_embeds_count;
PA_Tag **mocha_write_point;
uint32 mocha_write_level;
#ifdef MOCHA_CACHES_WRITES
NET_StreamClass *mocha_write_stream;
#endif
#endif
#ifdef HTML_CERTIFICATE_SUPPORT
lo_Certificate *cert_list; /* list of certificates in doc */
#endif
};
/* Script type codes, stored in top_state->in_script. */
#define SCRIPT_TYPE_NOT 0
#define SCRIPT_TYPE_MOCHA 1
#define SCRIPT_TYPE_UNKNOWN 2
/*
Internal Prototypes
*/
extern lo_FontStack *lo_DefaultFont(lo_DocState *, MWContext *);
extern Bool lo_FilterTag(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_LayoutTag(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_SaveSubdocTags(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_FreshText(lo_DocState *);
extern void lo_HardLineBreak(MWContext *, lo_DocState *, Bool);
extern void lo_SoftLineBreak(MWContext *, lo_DocState *, Bool, intn);
extern void lo_InsertWordBreak(MWContext *, lo_DocState *);
extern void lo_FormatText(MWContext *, lo_DocState *, char *);
extern void lo_PreformatedText(MWContext *, lo_DocState *, char *);
extern void lo_FlushLineBuffer(MWContext *, lo_DocState *);
extern void lo_RecolorText(lo_DocState *);
extern void lo_PushFont(lo_DocState *, intn, LO_TextAttr *);
extern LO_TextAttr *lo_PopFont(lo_DocState *, intn);
extern void lo_PopAllAnchors(lo_DocState *);
extern void lo_FlushLineList(MWContext *, lo_DocState *, Bool);
extern LO_LinefeedStruct *lo_NewLinefeed(lo_DocState *, MWContext *);
extern void lo_HorizontalRule(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_FormatImage(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_FormatEmbed(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_FormatJavaApp(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_JavaAppParam(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_CloseJavaApp(MWContext *, lo_DocState *, LO_JavaAppStruct *);
extern void lo_ProcessSpacerTag(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_ProcessBodyTag(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_BodyBackground(MWContext *, lo_DocState *, PA_Tag *, Bool);
extern void lo_BodyForeground(MWContext *, lo_DocState *, LO_ImageStruct *);
extern int32 lo_ValueOrPercent(char *, Bool *);
extern void lo_BreakOldElement(MWContext *, lo_DocState *);
extern void lo_CopyTextAttr(LO_TextAttr *, LO_TextAttr *);
extern LO_TextAttr *lo_FetchTextAttr(lo_DocState *, LO_TextAttr *);
extern void lo_FindLineMargins(MWContext *, lo_DocState *);
extern void lo_AddMarginStack(lo_DocState *, int32, int32, int32, int32,
int32, int32, int32, intn);
extern LO_AnchorData *lo_NewAnchor(lo_DocState *, PA_Block, PA_Block);
extern void lo_DestroyAnchor(LO_AnchorData *anchor_data);
extern void lo_AddToUrlList(MWContext *, lo_DocState *, LO_AnchorData *);
extern void lo_AddEmbedData(MWContext *, void *, lo_FreeProc, int32);
extern lo_ListStack *lo_DefaultList(lo_DocState *);
extern void lo_PushList(lo_DocState *, PA_Tag *);
extern lo_ListStack *lo_PopList(lo_DocState *, PA_Tag *);
extern void lo_PushAlignment(lo_DocState *, PA_Tag *, int32);
extern lo_AlignStack *lo_PopAlignment(lo_DocState *);
extern lo_TopState *lo_NewTopState(MWContext *, char *);
extern lo_DocState *lo_NewLayout(MWContext *, int32, int32, int32, int32,
lo_DocState*);
extern lo_SavedFormListData *lo_NewDocumentFormListData(void);
extern Bool lo_StoreTopState(int32, lo_TopState *);
extern lo_TopState *lo_FetchTopState(int32);
extern lo_DocState *lo_TopSubState(lo_TopState *);
extern lo_DocState *lo_CurrentSubState(lo_DocState *);
extern void lo_InheritParentState(lo_DocState *, lo_DocState *);
extern void lo_NoMoreImages(MWContext *);
extern void lo_FinishImage(MWContext *, lo_DocState *, LO_ImageStruct *);
extern void lo_BlockedImageLayout(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_PartialFormatImage(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_FlushBlockage(MWContext *, lo_DocState *, lo_DocState *);
extern void lo_FinishLayout(MWContext *, lo_DocState *, int);
extern void lo_FreeLayoutData(MWContext *, lo_DocState *);
struct pa_DocData_struct;
extern LO_Element *lo_InternalDiscardDocument(MWContext *, lo_DocState *, struct pa_DocData_struct *, Bool bWholeDoc);
#ifdef SCARY_LEAK_FIX
extern void lo_FreePartialTable(MWContext *, lo_DocState *, lo_TableRec *);
extern void lo_FreePartialSubDoc(MWContext *, lo_DocState *, LO_SubDocStruct *);
#endif /* SCARY_LEAK_FIX */
extern void lo_FreeElement(MWContext *context, LO_Element *, Bool);
extern void lo_FreeImageAttributes(LO_ImageAttr *image_attr);
extern void lo_ScrapeElement(MWContext *context, LO_Element *);
extern int32 lo_FreeRecycleList(MWContext *context, LO_Element *);
extern void lo_FreeGridRec(lo_GridRec *);
extern void lo_FreeGridCellRec(MWContext *, lo_GridCellRec *);
extern void lo_FreeGridEdge(lo_GridEdge *);
extern void lo_FreeFormElementData(LO_FormElementData *element_data);
#ifdef MEMORY_ARENAS
extern void lo_InitializeMemoryArena(lo_TopState *);
extern int32 lo_FreeMemoryArena(lo_arena *);
extern char *lo_MemoryArenaAllocate(lo_TopState *, int32);
#endif /* MEMORY_ARENAS */
extern char *lo_FetchFontFace(MWContext *, lo_DocState *, char *);
extern PA_Block lo_FetchParamValue(MWContext *, PA_Tag *, char *);
extern PA_Block lo_ValueToAlpha(int32, Bool, intn *);
extern void lo_PlaceBulletStr(MWContext *, lo_DocState *);
extern void lo_PlaceBullet (MWContext *, lo_DocState *);
extern PA_Block lo_ValueToRoman(int32, Bool, intn *);
extern void lo_ConvertAllValues(MWContext *, char **, int32, uint);
extern void lo_CloseOutLayout(MWContext *, lo_DocState *);
extern void lo_CloseOutTable(MWContext *, lo_DocState *);
extern void lo_ShiftMarginsUp(MWContext *, lo_DocState *, int32);
extern void lo_ClearToLeftMargin(MWContext *, lo_DocState *);
extern void lo_ClearToRightMargin(MWContext *, lo_DocState *);
extern void lo_ClearToBothMargins(MWContext *, lo_DocState *);
extern void lo_BeginForm(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_ProcessInputTag(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_FreeDocumentGridData(MWContext *, lo_SavedGridData *);
extern void lo_FreeDocumentEmbedListData(MWContext *, lo_SavedEmbedListData *);
extern void lo_FreeDocumentFormListData(MWContext *, lo_SavedFormListData *);
extern void lo_SaveFormElementState(MWContext *, lo_DocState *, Bool);
extern void lo_BeginTextareaTag(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_EndTextareaTag(MWContext *, lo_DocState *, PA_Block );
extern void lo_BeginOptionTag(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_EndOptionTag(MWContext *, lo_DocState *, PA_Block );
extern void lo_BeginSelectTag(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_EndSelectTag(MWContext *, lo_DocState *);
extern void lo_ProcessKeygenTag(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_BeginSubDoc(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_EndSubDoc(MWContext *, lo_DocState *,lo_DocState *,LO_Element *);
extern void lo_BeginCell(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_EndCell(MWContext *, lo_DocState *, LO_Element *);
extern void lo_RecreateGrid(MWContext *, lo_DocState *, lo_GridRec *);
extern void lo_BeginGrid(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_EndGrid(MWContext *, lo_DocState *, lo_GridRec *);
extern void lo_BeginGridCell(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_BeginSubgrid(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_EndSubgrid(MWContext *, lo_DocState *, lo_GridRec *);
extern void lo_BeginMap(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_EndMap(MWContext *, lo_DocState *, lo_MapRec *);
extern lo_MapRec *lo_FreeMap(lo_MapRec *);
extern void lo_BeginMapArea(MWContext *, lo_DocState *, PA_Tag *);
extern lo_MapRec *lo_FindNamedMap(MWContext *, lo_DocState *, char *);
extern LO_AnchorData *lo_MapXYToAnchorData(MWContext *, lo_DocState *,
lo_MapRec *, int32, int32);
extern void lo_BeginMulticolumn(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_EndMulticolumn(MWContext *, lo_DocState *, PA_Tag *,
lo_MultiCol *);
extern void lo_BeginTable(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_EndTable(MWContext *, lo_DocState *, lo_TableRec *);
extern void lo_BeginTableRow(MWContext *, lo_DocState *,lo_TableRec *,PA_Tag *);
extern void lo_EndTableRow(MWContext *, lo_DocState *, lo_TableRec *);
extern void lo_BeginTableCell(MWContext *, lo_DocState *, lo_TableRec *,
PA_Tag *, Bool);
extern void lo_EndTableCell(MWContext *, lo_DocState *);
extern void lo_BeginTableCaption(MWContext *, lo_DocState *, lo_TableRec *,
PA_Tag *);
extern void lo_EndTableCaption(MWContext *, lo_DocState *);
extern int32 lo_GetSubDocBaseline(LO_SubDocStruct *);
extern LO_CellStruct *lo_CaptureLines(MWContext *, lo_DocState *,
int32, int32, int32, int32, int32);
extern LO_CellStruct *lo_SquishSubDocToCell(MWContext *, lo_DocState *,
LO_SubDocStruct *);
extern LO_Element *lo_JumpCellWall(MWContext *, lo_DocState *, LO_Element *);
extern void lo_RenumberCell(lo_DocState *, LO_CellStruct *);
extern void lo_ShiftCell(LO_CellStruct *, int32, int32);
extern int32 lo_CleanTextWhitespace(char *, int32);
extern void lo_ProcessIsIndexTag(MWContext *, lo_DocState *, PA_Tag *);
extern void lo_EndForm(MWContext *, lo_DocState *);
extern void lo_RecycleElements(MWContext *, lo_DocState *, LO_Element *);
extern void lo_relayout_recycle(MWContext *context, lo_DocState *state,
LO_Element *elist);
extern LO_Element *lo_NewElement(MWContext *, lo_DocState *, intn,
ED_Element *, intn edit_offset);
extern void lo_AppendToLineList(MWContext *, lo_DocState *, LO_Element *,int32);
extern void lo_SetLineArrayEntry(lo_DocState *, LO_Element *, int32);
extern LO_Element *lo_FirstElementOfLine(MWContext *, lo_DocState *, int32);
extern void lo_ClipLines(MWContext *, lo_DocState *, int32);
extern void lo_SetDefaultFontAttr(lo_DocState *, LO_TextAttr *, MWContext *);
extern intn lo_EvalAlignParam(char *str, Bool *floating);
extern intn lo_EvalVAlignParam(char *str);
extern intn lo_EvalCellAlignParam(char *str);
extern intn lo_EvalDivisionAlignParam(char *str);
extern PA_Block lo_ConvertToFELinebreaks(char *, int32, int32 *);
extern PA_Block lo_FEToNetLinebreaks(PA_Block);
extern void lo_CleanFormElementData(LO_FormElementData *);
extern Bool lo_SetNamedAnchor(lo_DocState *, PA_Block, LO_Element *);
extern void lo_AddNameList(lo_DocState *, lo_DocState *);
extern int32 lo_StripTextWhitespace(char *, int32);
extern int32 lo_StripTextNewlines(char *, int32);
extern int32 lo_ResolveInputType(char *);
extern Bool lo_IsValidTarget(char *);
extern Bool lo_IsAnchorInDoc(lo_DocState *, char *);
extern void lo_DisplaySubtext(MWContext *, int, LO_TextStruct *,
int32, int32, Bool);
extern void lo_DisplayText(MWContext *, int, LO_TextStruct *, Bool);
extern void lo_DisplayImage(MWContext *, int, LO_ImageStruct *);
extern void lo_DisplayEmbed(MWContext *, int, LO_EmbedStruct *);
extern void lo_DisplayJavaApp(MWContext *, int, LO_JavaAppStruct *);
extern void lo_ClipImage(MWContext *, int, LO_ImageStruct *,
int32, int32, uint32, uint32);
extern void lo_DisplaySubImage(MWContext *, int, LO_ImageStruct *,
int32, int32, uint32, uint32);
extern void lo_DisplaySubDoc(MWContext *, int, LO_SubDocStruct *);
extern void lo_DisplayCell(MWContext *, int, LO_CellStruct *);
extern void lo_DisplayCellContents(MWContext *, int, LO_CellStruct *,
int32, int32);
extern void lo_DisplayEdge(MWContext *, int, LO_EdgeStruct *);
extern void lo_DisplayTable(MWContext *, int, LO_TableStruct *);
extern void lo_DisplayLineFeed(MWContext *, int, LO_LinefeedStruct *, Bool);
extern void lo_DisplayHR(MWContext *, int, LO_HorizRuleStruct *);
extern void lo_DisplayBullet(MWContext *, int, LO_BullettStruct *);
extern void lo_DisplayFormElement(MWContext *, int, LO_FormElementStruct *);
extern void LO_HighlightSelection(MWContext *, Bool);
extern void lo_RefreshDocumentArea(MWContext *, lo_DocState *,
int32, int32, uint32, uint32);
extern intn lo_GetCurrentGridCellStatus(lo_GridCellRec *);
extern char *lo_GetCurrentGridCellUrl(lo_GridCellRec *);
extern void lo_GetGridCellMargins(MWContext *, int32 *, int32 *);
extern LO_Element *lo_XYToGridEdge(MWContext *, lo_DocState *, int32, int32);
extern LO_Element *lo_XYToDocumentElement(MWContext *, lo_DocState *,
int32, int32, Bool, Bool, int32 *, int32 *);
extern LO_Element *lo_XYToDocumentElement2(MWContext *, lo_DocState *,
int32, int32, Bool, Bool, Bool, int32 *, int32 *);
extern LO_Element *lo_XYToCellElement(MWContext *, lo_DocState *,
LO_CellStruct *, int32, int32, Bool, Bool);
extern LO_Element *lo_XYToNearestCellElement(MWContext *, lo_DocState *,
LO_CellStruct *, int32, int32);
extern void lo_RegionToLines (MWContext *, lo_DocState *, int32 x, int32 y,
uint32 width, uint32 height, Bool dontCrop,
int32* topLine, int32* bottomLine);
extern int32 lo_PointToLine (MWContext *, lo_DocState *, int32 x, int32 y);
extern void lo_GetLineEnds(MWContext *, lo_DocState *,
int32 line, LO_Element** retBegin, LO_Element** retEnd);
extern void lo_CalcAlignOffsets(lo_DocState *, LO_TextInfo *, intn,
int32, int32, int16 *, int32 *, int32 *, int32 *);
extern intn LO_CalcPrintArea(MWContext *, int32 x, int32 y,
uint32 width, uint32 height, int32* top, int32* bottom);
extern Bool lo_FindWord(MWContext *, lo_DocState *,
LO_Position *where, LO_Selection *word);
/* Useful Macros */
#define COPY_COLOR(from_color, to_color) \
to_color.red = from_color.red; \
to_color.green = from_color.green; \
to_color.blue = from_color.blue
extern Bool lo_FindBestPositionOnLine( MWContext *pContext,
lo_DocState* state, int32 iLine,
int32 iDesiredX, int32 iDesiredY,
Bool bForward, int32* pRetX, int32 *pRetY );
#ifdef EDITOR
#ifdef DEBUG
/* lo_VerifyLayout does a consistency check on the layout structure.
* returns TRUE if the layout structure is consistent. */
extern Bool lo_VerifyLayout(MWContext *pContext);
/* PrintLayout prints the layout structure. */
extern void lo_PrintLayout(MWContext *pContext);
#endif /* DEBUG */
#endif /* EDITOR */
/*
* Returns length in selectable parts of this element. 1 for images, length of text for text, etc.
*/
int32
lo_GetElementLength(LO_Element* eptr);
extern Bool lo_EditableElement(int iType);
/* Moves by one editable position forward or backward. Returns FALSE if it couldn't.
* position can be denormalized on entry and may be denormalized on exit.
*/
Bool
lo_BumpEditablePosition(MWContext *context, lo_DocState *state,
LO_Element **pEptr, int32 *pPosition, Bool direction);
#ifdef MOCHA
extern lo_TopState *
lo_GetMochaTopState(MWContext *context);
extern void
lo_MarkMochaTopState(lo_TopState *top_state, MWContext *context);
extern void
lo_BeginReflectForm(MWContext *context, lo_DocState *state, PA_Tag *tag,
lo_FormData *form);
extern void
lo_EndReflectForm(MWContext *context, lo_FormData *form);
extern void
lo_ReflectImage(MWContext *context, lo_DocState *doc_state, PA_Tag *tag,
LO_ImageStruct *image_data, Bool blocked);
extern void
lo_CompileEventHandler(MWContext *context, lo_DocState *state, PA_Tag *tag,
LO_FormElementStruct *form_element, char *name);
extern void
lo_ReflectNamedAnchor(MWContext *context, lo_DocState *state, PA_Tag *tag,
lo_NameList *name_rec);
extern void
lo_ReflectLink(MWContext *context, lo_DocState *state, PA_Tag *tag,
LO_AnchorData *anchor_data, uint index);
extern void
lo_ProcessContextEventHandlers(MWContext *context, lo_DocState *state,
PA_Tag *tag);
extern void
lo_RestoreContextEventHandlers(MWContext *context, lo_DocState *state,
PA_Tag *tag, SHIST_SavedData *saved_data);
extern void
lo_ProcessScriptTag(MWContext *context, lo_DocState *state, PA_Tag *tag);
extern void
lo_BlockScriptTag(MWContext *context, lo_DocState *state, PA_Tag *tag);
extern void
lo_UnblockScriptTag(lo_DocState *state);
extern void
lo_ClearInputStream(MWContext *context, lo_TopState *top_state);
#endif /* MOCHA */