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/*
* Dillo Widget
*
* Copyright 2005-2007 Sebastian Geerken <sgeerken@dillo.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "textblock.hh"
#include "../lout/msg.h"
#include "../lout/misc.hh"
#include <stdio.h>
#include <math.h>
using namespace lout;
namespace dw {
Textblock::TextblockIterator::TextblockIterator (Textblock *textblock,
core::Content::Type mask,
bool atEnd):
core::Iterator (textblock, mask, atEnd)
{
index = atEnd ? textblock->words->size () : -1;
content.type = atEnd ? core::Content::END : core::Content::START;
}
Textblock::TextblockIterator::TextblockIterator (Textblock *textblock,
core::Content::Type mask,
int index):
core::Iterator (textblock, mask, false)
{
this->index = index;
if (index < 0)
content.type = core::Content::START;
else if (index >= textblock->words->size ())
content.type = core::Content::END;
else
content = textblock->words->getRef(index)->content;
}
object::Object *Textblock::TextblockIterator::clone()
{
return new TextblockIterator ((Textblock*)getWidget(), getMask(), index);
}
int Textblock::TextblockIterator::compareTo(misc::Comparable *other)
{
return index - ((TextblockIterator*)other)->index;
}
bool Textblock::TextblockIterator::next ()
{
Textblock *textblock = (Textblock*)getWidget();
if (content.type == core::Content::END)
return false;
do {
index++;
if (index >= textblock->words->size ()) {
content.type = core::Content::END;
return false;
}
} while ((textblock->words->getRef(index)->content.type & getMask()) == 0);
content = textblock->words->getRef(index)->content;
return true;
}
bool Textblock::TextblockIterator::prev ()
{
Textblock *textblock = (Textblock*)getWidget();
if (content.type == core::Content::START)
return false;
do {
index--;
if (index < 0) {
content.type = core::Content::START;
return false;
}
} while ((textblock->words->getRef(index)->content.type & getMask()) == 0);
content = textblock->words->getRef(index)->content;
return true;
}
void Textblock::TextblockIterator::highlight (int start, int end,
core::HighlightLayer layer)
{
Textblock *textblock = (Textblock*)getWidget();
int index1 = index, index2 = index;
int oldStartIndex = textblock->hlStart[layer].index;
int oldStartChar = textblock->hlStart[layer].nChar;
int oldEndIndex = textblock->hlEnd[layer].index;
int oldEndChar = textblock->hlEnd[layer].nChar;
if (textblock->hlStart[layer].index > textblock->hlEnd[layer].index) {
/* nothing is highlighted */
textblock->hlStart[layer].index = index;
textblock->hlEnd[layer].index = index;
}
if (textblock->hlStart[layer].index >= index) {
index2 = textblock->hlStart[layer].index;
textblock->hlStart[layer].index = index;
textblock->hlStart[layer].nChar = start;
}
if (textblock->hlEnd[layer].index <= index) {
index2 = textblock->hlEnd[layer].index;
textblock->hlEnd[layer].index = index;
textblock->hlEnd[layer].nChar = end;
}
if (oldStartIndex != textblock->hlStart[layer].index ||
oldStartChar != textblock->hlStart[layer].nChar ||
oldEndIndex != textblock->hlEnd[layer].index ||
oldEndChar != textblock->hlEnd[layer].nChar)
textblock->queueDrawRange (index1, index2);
}
void Textblock::TextblockIterator::unhighlight (int direction,
core::HighlightLayer layer)
{
Textblock *textblock = (Textblock*)getWidget();
int index1 = index, index2 = index;
if (textblock->hlStart[layer].index > textblock->hlEnd[layer].index)
return;
int oldStartIndex = textblock->hlStart[layer].index;
int oldStartChar = textblock->hlStart[layer].nChar;
int oldEndIndex = textblock->hlEnd[layer].index;
int oldEndChar = textblock->hlEnd[layer].nChar;
if (direction == 0) {
index1 = textblock->hlStart[layer].index;
index2 = textblock->hlEnd[layer].index;
textblock->hlStart[layer].index = 1;
textblock->hlEnd[layer].index = 0;
} else if (direction > 0 && textblock->hlStart[layer].index <= index) {
index1 = textblock->hlStart[layer].index;
textblock->hlStart[layer].index = index + 1;
textblock->hlStart[layer].nChar = 0;
} else if (direction < 0 && textblock->hlEnd[layer].index >= index) {
index1 = textblock->hlEnd[layer].index;
textblock->hlEnd[layer].index = index - 1;
textblock->hlEnd[layer].nChar = INT_MAX;
}
if (oldStartIndex != textblock->hlStart[layer].index ||
oldStartChar != textblock->hlStart[layer].nChar ||
oldEndIndex != textblock->hlEnd[layer].index ||
oldEndChar != textblock->hlEnd[layer].nChar)
textblock->queueDrawRange (index1, index2);
}
void Textblock::TextblockIterator::getAllocation (int start, int end,
core::Allocation *allocation)
{
Textblock *textblock = (Textblock*)getWidget();
int lineIndex = textblock->findLineOfWord (index);
Line *line = textblock->lines->getRef (lineIndex);
Word *word = textblock->words->getRef (index);
allocation->x =
textblock->allocation.x + textblock->lineXOffsetWidget (line);
for (int i = line->firstWord; i < index; i++) {
Word *w = textblock->words->getRef(i);
allocation->x += w->size.width + w->effSpace;
}
if (start > 0 && word->content.type == core::Content::TEXT) {
allocation->x += textblock->textWidth (word->content.text, 0, start,
word->style,
word->flags & Word::WORD_START,
(word->flags & Word::WORD_END)
&& word->content.text[start] == 0);
}
allocation->y = textblock->lineYOffsetCanvas (line) + line->boxAscent -
word->size.ascent;
allocation->width = word->size.width;
if (word->content.type == core::Content::TEXT) {
int wordEnd = strlen(word->content.text);
if (start > 0 || end < wordEnd) {
end = misc::min(end, wordEnd); /* end could be INT_MAX */
allocation->width =
textblock->textWidth (word->content.text, start, end - start,
word->style,
(word->flags & Word::WORD_START)
&& start == 0,
(word->flags & Word::WORD_END)
&& word->content.text[end] == 0);
}
}
allocation->ascent = word->size.ascent;
allocation->descent = word->size.descent;
}
} // namespace dw
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