Hi, once again. now handles empty spaces. This one should be final
Nick http://www.linkedin.com/in/tnick Sent from Izmit, 41, Turkey On Sun, Jan 17, 2010 at 1:08 PM, Trajce Nikolov <[email protected]>wrote: > small cursor position fix > > Nick > > http://www.linkedin.com/in/tnick > Sent from Izmit, 41, Turkey > > On Sun, Jan 17, 2010 at 1:00 PM, Trajce Nikolov > <[email protected]>wrote: > >> Hi, >> >> implemented cursor size based on the character. Looks much better. >> >> Nick >> >> http://www.linkedin.com/in/tnick >> Sent from Izmit, 41, Turkey >> > >
// -*-c++-*- osgWidget - Code by: Jeremy Moles (cubicool) 2007-2008
#include <osg/io_utils>
#include <osgWidget/WindowManager>
#include <osgWidget/Input>
namespace osgWidget {
class BlinkCursorComparisonOffCallback: public osg::Drawable::DrawCallback
{
public:
BlinkCursorComparisonOffCallback(const bool& insertMode)
: _insertMode(insertMode)
{
}
virtual void drawImplementation( osg::RenderInfo & ri,const osg::Drawable*
drawable ) const
{
static bool on = true;
static osg::Timer_t startTime = osg::Timer::instance()->tick();
osg::Timer_t now = osg::Timer::instance()->tick();
if
(osg::Timer::instance()->delta_s(startTime,now)>(_insertMode?0.125:0.25))
{
on = !on;
startTime = now;
}
if (on)
drawable->drawImplementation(ri);
}
protected:
const bool& _insertMode;
};
Input::Input(const std::string& name, const std::string& label, unsigned int
size):
Label (name, label),
_xoff (0.0f),
_yoff (0.0f),
_index (0),
_size (0),
_cursorIndex (0),
_textLength (0),
_maxSize (size),
_insertMode (false),
_cursor (new Widget("cursor")) {
_text->setAlignment(osgText::Text::LEFT_BOTTOM_BASE_LINE);
_text->setKerningType(osgText::KERNING_NONE);
// Make the cursor un-copyable.
_cursor->setCanClone(false);
_cursor->setDataVariance(osg::Object::DYNAMIC);
_cursor->setColor(0.0f, 0.0f, 0.0f, 1.0f);
setEventMask(
// For showing/hiding the "cursor."
EVENT_MASK_FOCUS |
// For keypresses, obviously.
EVENT_MASK_KEY |
// For "click" focusing.
EVENT_MOUSE_PUSH
);
_offsets.resize(size, 0.0f);
_widths.resize(size, 1.0f);
_text->getText().resize(size, ' ');
_text->update();
_cursor->setDrawCallback( new BlinkCursorComparisonOffCallback(_insertMode)
);
}
void Input::_calculateSize(const XYCoord& size) {
// An Input cannot currently set it's own size RELIABLY until the osgText
implementation
// is dratiscally improved. I'm getting wildly crazy results. :(
// point_type height = size.y() > _cursor->getHeight() ? size.y() :
_cursor->getHeight();
#if 0
point_type width = size.x() + _cursor->getWidth();
point_type height = _cursor->getHeight();
if(width > getWidth()) setWidth(osg::round(width));
if(height > getHeight()) setHeight(osg::round(height));
#endif
}
void Input::_calculateCursorOffsets() {
// Determine the "offset"
osg::Vec3 pos = _text->getPosition();
osgText::Text::TextureGlyphQuadMap& tgqm =
const_cast<osgText::Text::TextureGlyphQuadMap&>(_text->getTextureGlyphQuadMap());
osgText::Text::TextureGlyphQuadMap::iterator tgqmi = tgqm.begin();
std::vector<osg::Vec2> coords;
std::vector<osgText::Font::Glyph*> glyphs;
for ( ; tgqmi != tgqm.end(); tgqmi++ )
{
const osgText::Text::GlyphQuads& gq = tgqmi->second;
//coords.insert(coords.end(),gq.getTransformedCoords(0).begin(),gq.getTransformedCoords(0).end());
coords.insert(coords.end(),gq.getCoords().begin(),gq.getCoords().end());
for (unsigned int i=0; i<gq.getGlyphs().size(); ++i)
{
glyphs.push_back(gq.getGlyphs().at(i));
}
}
std::list<unsigned int> keys;
for (unsigned int i=0; i<_text->getText().size(); ++i)
{
keys.push_back(_text->getText().at(i));
}
unsigned int idx=0;
while (!keys.empty())
{
unsigned int key = keys.front();
for (unsigned int i=0; i<glyphs.size(); ++i)
{
osgText::Font::Glyph* g = glyphs.at(i);
if (g->getGlyphCode()==key)
{
osg::Vec2 lr = coords[2 + (i * 4)];
osg::Vec2 ll = coords[1 + (i * 4)];
point_type width = lr.x() - ll.x();
_widths[idx] = width == 0 ?
g->getHorizontalAdvance() : width;
_offsets[idx] = lr.x() + pos.x();
if (width == 0)
_offsets[idx] +=
g->getHorizontalAdvance();
++idx;
glyphs.erase(glyphs.begin()+i);
coords.erase(coords.begin()+i*4);
coords.erase(coords.begin()+i*4);
coords.erase(coords.begin()+i*4);
coords.erase(coords.begin()+i*4);
break;
}
}
keys.pop_front();
}
positioned();
}
bool Input::focus(const WindowManager*) {
_cursor->setColor(0.5f, 0.5f, 0.6f, 1.0f);
return true;
}
bool Input::unfocus(const WindowManager*) {
_cursor->setColor(0.0f, 0.0f, 0.0f, 0.0f);
return true;
}
void Input::parented(Window* parent) {
Label::parented(parent);
_cursor->setSize(_widths[_index], getHeight());
if(_cursorIndex) parent->getGeode()->setDrawable(_cursorIndex,
_cursor.get());
else _cursorIndex = parent->addDrawableAndGetIndex(_cursor.get());
}
void Input::positioned() {
point_type ln = static_cast<point_type>(_text->getLineCount());
ln = ln == 0.0f ? 1.0f : ln;
// point_type th = (_text->getCharacterHeight() * ln) +
(_text->getLineSpacing() * (ln - 1.0f));
point_type x = getX() + _xoff;
point_type y = getY() + _yoff;
// XYCoord size = getTextSize();
_text->setPosition(osg::Vec3(x, y, _calculateZ(LAYER_MIDDLE)));
point_type xoffset = _index > 0 ? _offsets[_index - 1] : 0.0f;
_cursor->setSize(_widths[_index], getHeight());
_cursor->setOrigin(getX() + xoffset, getY() );
_cursor->setZ(_calculateZ(LAYER_MIDDLE-1));
}
bool Input::keyUp(int key, int mask, const WindowManager*) {
return false;
}
bool Input::keyDown(int key, int mask, const WindowManager*) {
osgText::String& s = _text->getText();
switch (key)
{
case osgGA::GUIEventAdapter::KEY_Left:
if (_index>0)
{
--_index;
}
break;
case osgGA::GUIEventAdapter::KEY_Right:
if (_index<_textLength)
{
++_index;
}
break;
case osgGA::GUIEventAdapter::KEY_Home:
_index = 0;
break;
case osgGA::GUIEventAdapter::KEY_End:
_index = _textLength;
break;
case osgGA::GUIEventAdapter::KEY_Insert:
_insertMode = !_insertMode;
break;
case osgGA::GUIEventAdapter::KEY_Delete:
if (_index < s.size()-1)
{
for (unsigned int i=_index; i < s.size()-1; ++i)
{
s[i] = s[i+1];
}
_text->update();
_calculateCursorOffsets();
--_textLength;
}
break;
case osgGA::GUIEventAdapter::KEY_BackSpace:
if(_index >= 1) {
_index--;
if (_index< s.size()-1)
{
for (unsigned int i=_index; i < s.size()-1; ++i)
{
s[i] = s[i+1];
}
}
else
{
s[s.size()-1] = ' ';
}
_text->update();
_calculateCursorOffsets();
--_textLength;
}
break;
default:
if(key > 255 || _index >= _maxSize) return false;
if (!_insertMode)
{
for (unsigned int i=s.size()-1; i>_index; --i)
{
s[i] = s[i-1];
}
}
s[_index] = key;
_text->update();
_calculateCursorOffsets();
_index++;
if (!_insertMode) ++_textLength;
}
// _text->update();
_calculateSize(getTextSize());
getParent()->resize();
return false;
}
void Input::setCursor(Widget*) {
}
unsigned int Input::calculateBestYOffset(const std::string& s)
{
const osgText::FontResolution fr(static_cast<unsigned
int>(_text->getCharacterHeight()),
static_cast<unsigned
int>(_text->getCharacterHeight()));
osgText::String utf(s);
unsigned int descent = 0;
for(osgText::String::iterator i = utf.begin(); i != utf.end(); i++) {
osgText::Font* font =
const_cast<osgText::Font*>(_text->getFont());
osgText::Font::Glyph* glyph = font->getGlyph(fr, *i);
unsigned int d =
abs((int)glyph->getHorizontalBearing().y());
if(d > descent) descent = d;
}
return descent;
}
}
Input
Description: Binary data
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