size_t FalagardEditbox::getTextIndexFromPosition(const Point& pt) const
{
//
// calculate final window position to be checked
//
float wndx = screenToWindowX(pt.d_x);
if (getMetricsMode() == Relative)
{
wndx = relativeToAbsoluteX(wndx);
}
wndx -= d_lastTextOffset;
//
// Return the proper index
//
if (isTextMasked())
{
return getFont()->getCharAtPixel(String(d_text.length(), getMaskCodePoint()), wndx);
}
else
{
return getFont()->getCharAtPixel(d_text, wndx);
}
}
//----------------------------------------------------------------------------//
void Editbox::onMouseDoubleClicked(MouseEventArgs& e)
{
// base class processing
Window::onMouseDoubleClicked(e);
if (e.button == LeftButton)
{
// if masked, set up to select all
if (isTextMasked())
{
d_dragAnchorIdx = 0;
setCaretIndex(getText().length());
}
// not masked, so select the word that was double-clicked.
else
{
d_dragAnchorIdx = TextUtils::getWordStartIdx(getText(),
(d_caretPos == getText().length()) ? d_caretPos :
d_caretPos + 1);
d_caretPos = TextUtils::getNextWordStartIdx(getText(), d_caretPos);
}
// perform actual selection operation.
setSelection(d_dragAnchorIdx, d_caretPos);
++e.handled;
}
}
//----------------------------------------------------------------------------//
void Editbox::onMaskCodePointChanged(WindowEventArgs& e)
{
// if we are in masked mode, trigger a GUI redraw.
if (isTextMasked())
invalidate();
fireEvent(EventMaskCodePointChanged , e, EventNamespace);
}
void FalagardEditbox::populateRenderCache()
{
const StateImagery* imagery;
// draw container etc
// get WidgetLookFeel for the assigned look.
const WidgetLookFeel& wlf = WidgetLookManager::getSingleton().getWidgetLook(d_lookName);
// try and get imagery for the approprite state.
imagery = &wlf.getStateImagery(isDisabled() ? "Disabled" : (isReadOnly() ? "ReadOnly" : "Enabled"));
// peform the rendering operation for the container.
imagery->render(*this);
// get destination area for text
const Rect textArea(wlf.getNamedArea("TextArea").getArea().getPixelRect(*this));
//
// Required preliminary work for text rendering operations
//
const Font* font = getFont();
// no font == no more rendering
if (!font)
return;
// This will point to the final string to be used for rendering. Useful because it means we
// do not have to have duplicate code or be copying d_text for handling masked/unmasked text.
String* editText;
// Create a 'masked' version of the string if needed.
String maskedText;
if (isTextMasked())
{
maskedText.insert(0, d_text.length(), getMaskCodePoint());
editText = &maskedText;
}
// text not masked to editText will be the windows d_text String.
else
{
editText = &d_text;
}
// calculate best position to render text to ensure carat is always visible
float textOffset;
float extentToCarat = font->getTextExtent(editText->substr(0, getCaratIndex()));
// get carat imagery
const ImagerySection& caratImagery = wlf.getImagerySection("Carat");
// store carat width
float caratWidth = caratImagery.getBoundingRect(*this, textArea).getWidth();
// if box is inactive
if (!hasInputFocus())
{
textOffset = d_lastTextOffset;
}
// if carat is to the left of the box
else if ((d_lastTextOffset + extentToCarat) < 0)
{
textOffset = -extentToCarat;
}
// if carat is off to the right.
else if ((d_lastTextOffset + extentToCarat) >= (textArea.getWidth() - caratWidth))
{
textOffset = textArea.getWidth() - extentToCarat - caratWidth;
}
// else carat is already within the box
else
{
textOffset = d_lastTextOffset;
}
ColourRect colours;
float alpha_comp = getEffectiveAlpha();
//
// Draw label text
//
// setup initial rect for text formatting
Rect text_part_rect(textArea);
// allow for scroll position
text_part_rect.d_left += textOffset;
// centre text vertically within the defined text area
text_part_rect.d_top += (textArea.getHeight() - font->getLineSpacing()) * 0.5f;
// draw pre-highlight text
String sect = editText->substr(0, getSelectionStartIndex());
colours.setColours(d_normalTextColour);
colours.modulateAlpha(alpha_comp);
d_renderCache.cacheText(sect, font, LeftAligned, text_part_rect, 0, colours, &textArea);
// adjust rect for next section
text_part_rect.d_left += font->getTextExtent(sect);
// draw highlight text
sect = editText->substr(getSelectionStartIndex(), getSelectionLength());
colours.setColours(d_selectTextColour);
colours.modulateAlpha(alpha_comp);
d_renderCache.cacheText(sect, font, LeftAligned, text_part_rect, 0, colours, &textArea);
// adjust rect for next section
text_part_rect.d_left += font->getTextExtent(sect);
// draw post-highlight text
sect = editText->substr(getSelectionEndIndex());
colours.setColours(d_normalTextColour);
colours.modulateAlpha(alpha_comp);
d_renderCache.cacheText(sect, font, LeftAligned, text_part_rect, 0, colours, &textArea);
// remember this for next time.
d_lastTextOffset = textOffset;
// see if the editbox is active or inactive.
bool active = (!isReadOnly()) && hasInputFocus();
//
// Render selection imagery.
//
if (getSelectionLength() != 0)
{
// calculate required start and end offsets of selection imagery.
float selStartOffset = font->getTextExtent(editText->substr(0, getSelectionStartIndex()));
float selEndOffset = font->getTextExtent(editText->substr(0, getSelectionEndIndex()));
// calculate area for selection imagery.
Rect hlarea(textArea);
hlarea.d_left += textOffset + selStartOffset;
hlarea.d_right = hlarea.d_left + (selEndOffset - selStartOffset);
// render the selection imagery.
wlf.getStateImagery(active ? "ActiveSelection" : "InactiveSelection").render(*this, hlarea, 0, &textArea);
}
//
// Render carat
//
if (active)
{
Rect caratRect(textArea);
caratRect.d_left += extentToCarat + textOffset;
caratImagery.render(*this, caratRect, 0, 0, &textArea);
}
}
