/** 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;
}
}
}
/** 删除指定行列的文字及其右边的文本 */
static int TextLayer_TextDeleteEx( LCUI_TextLayer layer, int char_y,
int char_x, int n_char )
{
int end_x, end_y, i, j, len;
TextRow txtrow, end_txtrow, prev_txtrow;
if( char_x < 0 ) {
char_x = 0;
}
if( char_y < 0 ) {
char_y = 0;
}
if( n_char <= 0 ) {
return -1;
}
if( char_y >= layer->rowlist.length ) {
return -2;
}
txtrow = layer->rowlist.rows[char_y];
if( char_x > txtrow->length ) {
char_x = txtrow->length;
}
i = n_char;
end_x = char_x;
end_y = char_y;
/* 计算结束点的位置 */
for( ; end_y < layer->rowlist.length && n_char > 0; ++end_y ) {
txtrow = layer->rowlist.rows[end_y];
if( end_x + n_char <= txtrow->length ) {
end_x += n_char;
n_char = 0;
break;
}
n_char -= (txtrow->length - end_x);
if( txtrow->eol == EOL_NONE ) {
end_x = 0;
} else {
n_char -= 1;
end_x = 0;
}
}
if( n_char >= 0 ) {
layer->length -= i - n_char;
} else {
layer->length -= n_char;
}
if( end_y >= layer->rowlist.length ) {
end_y = layer->rowlist.length - 1;
end_txtrow = layer->rowlist.rows[end_y];
end_x = end_txtrow->length;
} else {
end_txtrow = layer->rowlist.rows[end_y];
}
if( end_x > end_txtrow->length ) {
end_x = end_txtrow->length;
}
if( end_x == char_x && end_y == char_y ) {
return 0;
}
/* 获取上一行文本 */
prev_txtrow = layer->rowlist.rows[char_y - 1];
// 计算起始行与结束行拼接后的长度
// 起始行：0 1 2 3 4 5，起点位置：2
// 结束行：0 1 2 3 4 5，终点位置：4
// 拼接后的长度：2 + 6 - 4 = 4
len = char_x + end_txtrow->length - end_x;
if( len < 0 ) {
return -3;
}
/* 如果是同一行 */
if( txtrow == end_txtrow ) {
if( end_x > end_txtrow->length ) {
return -4;
}
TextLayer_InvalidateRowRect( layer, char_y, char_x, -1 );
TextLayer_AddUpdateTypeset( layer, char_y );
for( i = char_x, j = end_x; j < txtrow->length; ++i, ++j ) {
txtrow->string[i] = txtrow->string[j];
}
/* 如果当前行为空，也不是第一行，并且上一行没有结束符 */
if( len <= 0 && end_y > 0 && prev_txtrow->eol != EOL_NONE ) {
TextRowList_RemoveRow( &layer->rowlist, end_y );
}
/* 调整起始行的容量 */
TextRow_SetLength( txtrow, len );
/* 更新文本行的尺寸 */
TextLayer_UpdateRowSize( layer, txtrow );
return 0;
}
/* 如果结束点在行尾，并且该行不是最后一行 */
if( end_x == end_txtrow->length && end_y < layer->rowlist.length - 1 ) {
++end_y;
end_txtrow = TextLayer_GetRow( layer, end_y );
end_x = -1;
len = char_x + end_txtrow->length;
}
TextRow_SetLength( txtrow, len );
/* 标记当前行后面的所有行的矩形需区域需要刷新 */
TextLayer_InvalidateRowsRect( layer, char_y + 1, -1 );
/* 移除起始行与结束行之间的文本行 */
for( i = char_y + 1, j = i; j < end_y; ++j ) {
TextLayer_InvalidateRowRect( layer, i, 0, -1 );
TextRowList_RemoveRow( &layer->rowlist, i );
}
i = char_x;
j = end_x + 1;
end_y = char_y + 1;
/* 将结束行的内容拼接至起始行 */
for( ; i < len && j < end_txtrow->length; ++i, ++j ) {
txtrow->string[i] = end_txtrow->string[j];
}
TextLayer_UpdateRowSize( layer, txtrow );
TextLayer_InvalidateRowRect( layer, end_y, 0, -1 );
/* 移除结束行 */
TextRowList_RemoveRow( &layer->rowlist, end_y );
/* 如果起始行无内容，并且上一行没有结束符（换行符），则
* 说明需要删除起始行 */
if( len <= 0 && char_y > 0 && prev_txtrow->eol != EOL_NONE ) {
TextLayer_InvalidateRowRect( layer, char_y, 0, -1 );
TextRowList_RemoveRow( &layer->rowlist, char_y );
}
TextLayer_AddUpdateTypeset( layer, char_y );;
return 0;
}
/** 删除指定行列的文字及其右边的文本 */
static int TextLayer_DeleteText( LCUI_TextLayer* layer, int char_y,
int char_x, int n_char )
{
int end_x, end_y, i, j, len;
TextRowData *p_row, *p_end_row, *p_prev_row;
if( char_x < 0 ) {
char_x = 0;
}
if( char_y < 0 ) {
char_y = 0;
}
if( n_char <= 0 ) {
return -1;
}
if( char_y >= layer->row_list.rows ) {
return -2;
}
p_row = layer->row_list.rowdata[char_y];
if( char_x > p_row->string_len ) {
char_x = p_row->string_len;
}
end_x = char_x;
end_y = char_y;
--n_char;
/* 计算结束点的位置 */
for( end_y=char_y; end_y<layer->row_list.rows && n_char>0; ++end_y ) {
p_row = layer->row_list.rowdata[end_y];
if( p_row->eol == EOL_NONE ) {
if( end_x + n_char < p_row->string_len ) {
end_x += n_char;
n_char = 0;
break;
}
} else {
if( end_x + n_char <= p_row->string_len ) {
end_x += n_char;
n_char = 0;
break;
}
}
n_char -= (p_row->string_len - end_x);
end_x = 0;
}
if( end_y >= layer->row_list.rows ) {
end_y = layer->row_list.rows-1;
}
p_end_row = layer->row_list.rowdata[end_y];
if( end_x > p_end_row->string_len ) {
end_x = p_end_row->string_len;
}
/* 获取上一行文本 */
p_prev_row = layer->row_list.rowdata[char_y-1];
// 计算起始行与结束行拼接后的长度
// 起始行：0 1 2 3 4 5，起点位置：2
// 结束行：0 1 2 3 4 5，终点位置：4
// 拼接后的长度：2 + 6 - 4 - 1 = 3
len = char_x + p_end_row->string_len - end_x - 1;
if( len < 0 ) {
return -3;
}
/* 如果是同一行 */
if( p_row == p_end_row ) {
if( end_x >= p_end_row->string_len ) {
return -4;
}
TextLayer_InvalidateRowRectEx( layer, char_y, char_x, -1 );
TaskData_AddUpdateTypeset( &layer->task, char_y );
for( i=char_x, j=end_x+1; j<p_row->string_len; ++i,++j ) {
p_row->string[i] = p_row->string[j];
}
/* 如果当前行为空，也不是第一行，并且上一行没有结束符 */
if( len <= 0 && end_y > 0 && p_prev_row->eol != EOL_NONE ) {
TextRowList_RemoveRow( &layer->row_list, end_y );
}
/* 调整起始行的容量 */
TextRow_SetLength( p_row, len );
/* 更新文本行的尺寸 */
TextRow_UpdateSize( p_row, layer->text_style.pixel_size );
return 0;
}
/* 如果结束点在行尾，并且该行不是最后一行 */
if( end_x == p_end_row->string_len && end_y < layer->row_list.rows-1 ) {
++end_y;
p_end_row = TextRowList_GetRow( &layer->row_list, end_y );
end_x = -1;
len = char_x + p_end_row->string_len;
}
TextRow_SetLength( p_row, len );
/* 标记当前行后面的所有行的矩形需区域需要刷新 */
TextLayer_InvalidateRowsRect( layer, char_y+1, -1 );
/* 移除起始行与结束行之间的文本行 */
for( i=char_y+1, j=i; j<end_y; ++j ) {
TextLayer_InvalidateRowRect( layer, i );
TextRowList_RemoveRow( &layer->row_list, i );
}
end_y = char_y + 1;
/* 将结束行的内容拼接至起始行 */
for( i=char_x, j=end_x+1; i<len && j<p_end_row->string_len; ++i,++j ) {
p_row->string[i] = p_end_row->string[j];
}
TextRow_UpdateSize( p_row, layer->text_style.pixel_size );
TextLayer_InvalidateRowRect( layer, end_y );
/* 移除结束行 */
TextRowList_RemoveRow( &layer->row_list, end_y );
/* 如果起始行无内容，并且上一行没有结束符（换行符），则
* 说明需要删除起始行 */
if( len <= 0 && char_y > 0 && p_prev_row->eol != EOL_NONE ) {
TextLayer_InvalidateRowRect( layer, char_y );
TextRowList_RemoveRow( &layer->row_list, char_y );
}
TaskData_AddUpdateTypeset( &layer->task, char_y );;
return 0;
}
/** 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;
}
}
}