/** 对文本进行预处理 */
static int TextLayer_ProcessText( LCUI_TextLayer *layer, const wchar_t *wstr,
TextAddType add_type, LCUI_StyleTagStack *tag_stack )
{
EOLChar eol;
int cur_col, cur_row, start_row, ins_x, ins_y;
const wchar_t *p_end, *p, *pp;
TextRowData *p_row;
TextCharData char_data;
LCUI_StyleTagStack tmp_tag_stack;
LCUI_BOOL is_tmp_tag_stack, need_typeset, rect_has_added;
if( !wstr ) {
return -1;
}
is_tmp_tag_stack = FALSE;
need_typeset = FALSE;
rect_has_added = FALSE;
/* 如果是将文本追加至文本末尾 */
if( add_type == TEXT_ADD_TYPE_APPEND ) {
if( layer->row_list.rows > 0 ) {
cur_row = layer->row_list.rows - 1;
} else {
cur_row = 0;
}
p_row = TextRowList_GetRow( &layer->row_list, cur_row );
if( !p_row ) {
p_row = TextRowList_AddNewRow( &layer->row_list );
}
cur_col = p_row->string_len;
} else { /* 否则，是将文本插入至当前插入点 */
cur_row = layer->insert_y;
cur_col = layer->insert_x;
p_row = TextRowList_GetRow( &layer->row_list, cur_row );
if( !p_row ) {
p_row = TextRowList_AddNewRow( &layer->row_list );
}
}
start_row = cur_row;
ins_x = cur_col;
ins_y = cur_row;
/* 如果没有可用的标签栈，则使用临时的标签栈 */
if( !tag_stack ) {
is_tmp_tag_stack = TRUE;
StyleTagStack_Init( &tmp_tag_stack );
tag_stack = &tmp_tag_stack;
}
p_end = wstr + wcslen(wstr);
for( p=wstr; p<p_end; ++p ) {
if( layer->is_using_style_tags ) {
/* 处理样式的结束标签 */
pp = StyleTagStack_ScanEndingTag( tag_stack, p );
if( pp ) {
p = pp;
/* 抵消本次循环后的++p，以在下次循环时还能够在当前位置 */
--p;
continue;
}
/* 处理样式标签 */
pp = StyleTagStack_ScanBeginTag( tag_stack, p );
if( pp ) {
p = pp - 1;
continue;
}
}
if( *p == '\r' || *p == '\n' ) {
/* 如果后面还有 \n，则说明是CR/LF换行模式 */
if( *p == 'r' ) {
if( p+1 < p_end && *(p+1) == '\n' ) {
eol = EOL_CR_LF;
} else {
/* 否则是CR换行模式 */
eol = EOL_CR;
}
} else {
eol = EOL_LF;
}
/* 如果没有记录过文本行的矩形区域 */
if( !rect_has_added ) {
TextLayer_InvalidateRowsRect( layer, ins_y, -1 );
rect_has_added = TRUE;
start_row = ins_y;
}
/* 将当前行中的插入点为截点，进行断行 */
TextLayer_BreakTextRow( layer, ins_y, ins_x, eol );
need_typeset = TRUE;
ins_x = 0;
++ins_y;
p_row = TextRowList_GetRow( &layer->row_list, ins_y );
continue;
}
char_data.char_code = *p;
/* 获取当前文本样式数据 */
char_data.style = StyleTagStack_GetTextStyle( tag_stack );
/* 更新字体位图 */
TextChar_UpdateBitmap( &char_data, &layer->text_style );
TextRow_InsertCopy( p_row, ins_x, &char_data );
++ins_x;
}
/* 更新当前行的尺寸 */
TextRow_UpdateSize( p_row, layer->text_style.pixel_size );
if( add_type == TEXT_ADD_TYPE_INSERT ) {
layer->insert_x = ins_x;
layer->insert_y = ins_y;
}
/* 若启用了自动换行模式，则标记需要重新对文本进行排版 */
if( layer->is_autowrap_mode || need_typeset ) {
TaskData_AddUpdateTypeset( &layer->task, cur_row );
} else {
TextLayer_InvalidateRowRect( layer, cur_row );
}
/* 如果已经记录过文本行矩形区域 */
if( rect_has_added ) {
TextLayer_InvalidateRowsRect( layer, start_row, -1 );
rect_has_added = TRUE;
}
/* 如果使用的是临时标签栈，则销毁它 */
if( is_tmp_tag_stack ) {
StyleTagStack_Destroy( tag_stack );
}
return 0;
}
/** 对文本进行预处理 */
static int TextLayer_ProcessText( LCUI_TextLayer layer, const wchar_t *wstr,
int add_type, LinkedList *tags )
{
EOLChar eol;
TextRow txtrow;
TextCharRec txtchar;
LinkedList tmp_tags;
LCUI_TextStyle *style = NULL;
const wchar_t *p_end, *p, *pp;
int cur_col, cur_row, start_row, ins_x, ins_y;
LCUI_BOOL is_tmp_tag_stack, need_typeset, rect_has_added;
if( !wstr ) {
return -1;
}
need_typeset = FALSE;
rect_has_added = FALSE;
is_tmp_tag_stack = FALSE;
/* 如果是将文本追加至文本末尾 */
if( add_type == TAT_APPEND ) {
if( layer->rowlist.length > 0 ) {
cur_row = layer->rowlist.length - 1;
} else {
cur_row = 0;
}
txtrow = TextLayer_GetRow( layer, cur_row );
if( !txtrow ) {
txtrow = TextRowList_AddNewRow( &layer->rowlist );
}
cur_col = txtrow->length;
} else { /* 否则，是将文本插入至当前插入点 */
cur_row = layer->insert_y;
cur_col = layer->insert_x;
txtrow = TextLayer_GetRow( layer, cur_row );
if( !txtrow ) {
txtrow = TextRowList_AddNewRow( &layer->rowlist );
}
}
start_row = cur_row;
ins_x = cur_col;
ins_y = cur_row;
/* 如果没有可用的标签栈，则使用临时的标签栈 */
if( !tags ) {
is_tmp_tag_stack = TRUE;
StyleTags_Init( &tmp_tags );
tags = &tmp_tags;
}
p_end = wstr + wcslen( wstr );
for( p = wstr; p < p_end; ++p ) {
/* 如果启用的样式标签支持，则处理样式的结束标签 */
if( layer->is_using_style_tags ) {
pp = StyleTags_ScanEndingTag( tags, p );
if( pp ) {
/* 抵消本次循环后的++p，以在下次循环时还能够在当前位置 */
p = pp - 1;
style = StyleTags_GetTextStyle( tags );
LinkedList_Append( &layer->style_cache, style );
continue;
}
pp = StyleTags_ScanBeginTag( tags, p );
if( pp ) {
p = pp - 1;
style = StyleTags_GetTextStyle( tags );
LinkedList_Append( &layer->style_cache, style );
continue;
}
}
if( *p == '\r' || *p == '\n' ) {
/* 判断是哪一种换行模式 */
if( *p == '\r' ) {
if( p + 1 < p_end && *(p + 1) == '\n' ) {
eol = EOL_CR_LF;
} else {
eol = EOL_CR;
}
} else {
eol = EOL_LF;
}
/* 如果没有记录过文本行的矩形区域 */
if( !rect_has_added ) {
TextLayer_InvalidateRowsRect( layer, ins_y, -1 );
rect_has_added = TRUE;
start_row = ins_y;
}
/* 将当前行中的插入点为截点，进行断行 */
TextLayer_BreakTextRow( layer, ins_y, ins_x, eol );
layer->width = max( layer->width, txtrow->width );
need_typeset = TRUE;
++layer->length;
ins_x = 0;
++ins_y;
txtrow = TextLayer_GetRow( layer, ins_y );
continue;
}
txtchar.style = style;
txtchar.char_code = *p;
TextChar_UpdateBitmap( &txtchar, &layer->text_style );
TextRow_InsertCopy( txtrow, ins_x, &txtchar );
++layer->length;
++ins_x;
}
/* 更新当前行的尺寸 */
TextLayer_UpdateRowSize( layer, txtrow );
layer->width = max( layer->width, txtrow->width );
if( add_type == TAT_INSERT ) {
layer->insert_x = ins_x;
layer->insert_y = ins_y;
}
/* 若启用了自动换行模式，则标记需要重新对文本进行排版 */
if( layer->is_autowrap_mode || need_typeset ) {
TextLayer_AddUpdateTypeset( layer, cur_row );
} else {
TextLayer_InvalidateRowRect( layer, cur_row, 0, -1 );
}
/* 如果已经记录过文本行矩形区域 */
if( rect_has_added ) {
TextLayer_InvalidateRowsRect( layer, start_row, -1 );
rect_has_added = TRUE;
}
/* 如果使用的是临时标签栈，则销毁它 */
if( is_tmp_tag_stack ) {
StyleTags_Clear( tags );
}
return 0;
}
/** 对指定行的文本进行排版 */
static void TextLayer_TextRowTypeset( LCUI_TextLayer* layer, int row )
{
int col, row_width;
TextRowData *p_row, *p_next_row;
TextCharData *p_char;
p_row = layer->row_list.rowdata[row];
row_width = 0;
for( col=0; col<p_row->string_len; ++col ) {
p_char = p_row->string[col];
if( !p_char->bitmap ) {
continue;
}
/* 累加行宽度 */
row_width += p_char->bitmap->advance.x;
/* 如果是当前行的第一个字符，或者行宽度没有超过宽度限制 */
if( layer->max_width <= 0 || !layer->is_autowrap_mode
|| (layer->is_autowrap_mode && !layer->is_mulitiline_mode)
|| col < 1 || p_row->max_width <= layer->max_width ) {
continue;
}
TextLayer_BreakTextRow( layer, row, col, EOL_NONE );
return;
}
TextRow_UpdateSize( p_row, layer->text_style.pixel_size );
/* 如果本行有换行符，或者是最后一行 */
if( p_row->eol != EOL_NONE || row == layer->row_list.rows-1 ) {
return;
}
row_width = p_row->max_width;
/* 本行的文本宽度未达到限制宽度，需要将下行的文本转移至本行 */
while( p_row->eol != EOL_NONE ) {
/* 获取下一行的指针 */
p_next_row = TextRowList_GetRow( &layer->row_list, row+1 );
if( !p_next_row ) {
return;
}
for( col=0; col<p_next_row->string_len; ++col ) {
p_char = p_next_row->string[col];
/* 忽略无字体位图的文字 */
if( !p_char->bitmap ) {
TextRow_Insert( p_row, p_row->string_len, p_char );
p_next_row->string[col] = NULL;
continue;
}
row_width += p_char->bitmap->advance.x;
/* 如果没有超过宽度限制 */
if( !layer->is_autowrap_mode || layer->max_width <= 0
|| (layer->is_autowrap_mode && !layer->is_mulitiline_mode)
|| p_row->max_width <= layer->max_width ) {
TextRow_Insert( p_row, p_row->string_len, p_char );
p_next_row->string[col] = NULL;
continue;
}
/* 如果插入点在下一行 */
if( layer->insert_y == row+1 ) {
/* 如果插入点处于被转移的几个文字中 */
if( layer->insert_x < col ) {
layer->insert_y = row;
layer->insert_x += p_row->string_len;
} else {
/* 否则，减去被转移的文字数 */
layer->insert_x -= col;
}
}
/* 将这一行剩余的文字向前移 */
TextRow_LeftMove( p_next_row, col );
TextRow_UpdateSize( p_row, layer->text_style.pixel_size );
return;
}
TextRow_UpdateSize( p_row, layer->text_style.pixel_size );
TextLayer_InvalidateRowRect( layer, row );
TextLayer_InvalidateRowRect( layer, row+1 );
_DEBUG_MSG("remove row %d\n", row+1);
/* 删除这一行，因为这一行的内容已经转移至当前行 */
TextRowList_RemoveRow( &layer->row_list, row+1 );
/* 如果插入点当前行在后面 */
if( layer->insert_y > row ) {
--layer->insert_y;
}
}
}
/** 对指定行的文本进行排版 */
static void TextLayer_TextRowTypeset( LCUI_TextLayer layer, int row )
{
TextRow txtrow;
TextChar txtchar;
LCUI_BOOL not_autowrap;
int col, row_width = 0;
int max_width;
if( layer->fixed_width > 0 ) {
max_width = layer->fixed_width;
} else {
max_width = layer->max_width;
}
if( max_width <= 0 || !layer->is_autowrap_mode ||
(layer->is_autowrap_mode && !layer->is_mulitiline_mode) ) {
not_autowrap = TRUE;
} else {
not_autowrap = FALSE;
}
txtrow = layer->rowlist.rows[row];
for( col = 0; col < txtrow->length; ++col ) {
txtchar = txtrow->string[col];
if( !txtchar->bitmap ) {
continue;
}
/* 累加行宽度 */
row_width += txtchar->bitmap->advance.x;
/* 如果是当前行的第一个字符，或者行宽度没有超过宽度限制 */
if( not_autowrap || col < 1 || row_width <= max_width ) {
continue;
}
TextLayer_BreakTextRow( layer, row, col, EOL_NONE );
return;
}
TextLayer_UpdateRowSize( layer, txtrow );
/* 如果本行有换行符，或者是最后一行 */
if( txtrow->eol != EOL_NONE || row == layer->rowlist.length - 1 ) {
return;
}
row_width = txtrow->width;
/* 本行的文本宽度未达到限制宽度，需要将下行的文本转移至本行 */
while( txtrow->eol == EOL_NONE ) {
/* 获取下一行的指针 */
TextRow next_txtrow = TextLayer_GetRow( layer, row + 1 );
if( !next_txtrow ) {
break;
}
for( col = 0; col < next_txtrow->length; ++col ) {
txtchar = next_txtrow->string[col];
/* 忽略无字体位图的文字 */
if( !txtchar->bitmap ) {
TextRow_Insert( txtrow, -1, txtchar );
next_txtrow->string[col] = NULL;
continue;
}
row_width += txtchar->bitmap->advance.x;
/* 如果没有超过宽度限制 */
if( not_autowrap || row_width <= max_width ) {
TextRow_Insert( txtrow, -1, txtchar );
next_txtrow->string[col] = NULL;
continue;
}
/* 如果插入点在下一行 */
if( layer->insert_y == row + 1 ) {
/* 如果插入点处于被转移的几个文字中 */
if( layer->insert_x < col ) {
layer->insert_y = row;
layer->insert_x += txtrow->length;
} else {
/* 否则，减去被转移的文字数 */
layer->insert_x -= col;
}
}
/* 将这一行剩余的文字向前移 */
TextRow_LeftMove( next_txtrow, col );
TextLayer_UpdateRowSize( layer, txtrow );
return;
}
txtrow->eol = next_txtrow->eol;
TextLayer_UpdateRowSize( layer, txtrow );
TextLayer_InvalidateRowRect( layer, row, 0, -1 );
TextLayer_InvalidateRowRect( layer, row + 1, 0, -1 );
/* 删除这一行，因为这一行的内容已经转移至当前行 */
TextRowList_RemoveRow( &layer->rowlist, row + 1 );
/* 如果插入点当前行在后面 */
if( layer->insert_y > row ) {
--layer->insert_y;
}
}
}