/// <summary>
/// helper to draw the base imagery (container and what have you)
/// </summary>
/// <param name="wlf"></param>
protected void RenderBaseImagery(WidgetLookFeel wlf)
{
var w = (Editbox)Window;
var imagery = wlf.GetStateImagery(w.IsEffectiveDisabled()
? "Disabled"
: (w.IsReadOnly() ? "ReadOnly" : "Enabled"));
imagery.Render(w);
}
protected void CreateRenderGeometryForTextWithBidi(WidgetLookFeel wlf, string text, Rectf textArea, float textOffset)
{
var font = Window.GetFont();
// setup initial rect for text formatting
var textPartRect = textArea;
// allow for scroll position
textPartRect.d_min.X += textOffset;
// centre text vertically within the defined text area
textPartRect.d_min.Y += (textArea.Height - font.GetFontHeight()) * 0.5f;
var colours = new ColourRect();
var alphaComp = Window.GetEffectiveAlpha();
// get unhighlighted text colour (saves accessing property twice)
var unselectedColour = new ColourRect();
SetColourRectToUnselectedTextColour(ref unselectedColour);
// see if the editbox is active or inactive.
var w = (Editbox)Window;
var active = EditboxIsFocussed();
if (w.GetSelectionLength() == 0)
{
// no highlighted text - we can draw the whole thing
colours = unselectedColour;
w.AppendGeometryBuffers(font.CreateRenderGeometryForText(text, out textPartRect.d_min.X, textPartRect.Position, textArea, true, colours));
}
else
{
// there is highlighted text - because of the Bidi support - the
// highlighted area can be in some cases nonconsecutive.
// So - we need to draw it char by char (I guess we can optimize it more
// but this is not that big performance hit because it only happens if
// we have highlighted text - not that common...)
for (var i = 0; i < text.Length; i++)
{
// get the char
var currChar = text[i];
var realPos = 0;
// get he visual pos of the char
if (w.GetBidiVisualMapping().GetV2lMapping().Count > i)
{
realPos = w.GetBidiVisualMapping().GetV2lMapping()[i];
}
// check if it is in the highlighted region
var highlighted = realPos >= w.GetSelectionStart() &&
realPos < w.GetSelectionStart() + w.GetSelectionLength();
var charAdvance = font.GetGlyphData(currChar).GetAdvance();
if (highlighted)
{
SetColourRectToSelectedTextColour(ref colours);
colours.ModulateAlpha(alphaComp);
{
// calculate area for selection imagery.
var hlarea = textArea;
hlarea.d_min.X = textPartRect.d_min.X;
hlarea.d_max.X = textPartRect.d_min.X + charAdvance;
// render the selection imagery.
wlf.GetStateImagery(active ? "ActiveSelection" :"InactiveSelection").Render(w, hlarea, null, textArea);
}
}
else
{
colours = unselectedColour;
colours.ModulateAlpha(alphaComp);
}
w.AppendGeometryBuffers(font.CreateRenderGeometryForText(currChar.ToString(CultureInfo.InvariantCulture), textPartRect.Position, textArea, true, colours));
// adjust rect for next section
textPartRect.d_min.X += charAdvance;
}
}
}
protected void CreateRenderGeometryForTextWithoutBidi(WidgetLookFeel wlf, string text, Rectf textArea, float textOffset)
{
var font = Window.GetFont();
// setup initial rect for text formatting
var textPartRect = textArea;
// allow for scroll position
textPartRect.d_min.X += textOffset;
// centre text vertically within the defined text area
textPartRect.d_min.Y += (textArea.Height - font.GetFontHeight()) * 0.5f;
var alphaComp = Window.GetEffectiveAlpha();
// get unhighlighted text colour (saves accessing property twice)
var unselectedColours = new ColourRect();
SetColourRectToUnselectedTextColour(ref unselectedColours);
// see if the editbox is active or inactive.
var w = (Editbox)Window;
var active = EditboxIsFocussed();
if (w.GetSelectionLength() != 0)
{
// calculate required start and end offsets of selection imagery.
var selStartOffset = font.GetTextAdvance(text.CEGuiSubstring(0, w.GetSelectionStart()));
var selEndOffset = font.GetTextAdvance(text.CEGuiSubstring(0, w.GetSelectionEnd()));
// calculate area for selection imagery.
Rectf hlarea = textArea;
hlarea.d_min.X += textOffset + selStartOffset;
hlarea.d_max.X = hlarea.d_min.X + (selEndOffset - selStartOffset);
// create render geometry for the selection imagery.
wlf.GetStateImagery(active ? "ActiveSelection" : "InactiveSelection").Render(w, hlarea, null, textArea);
}
// create render geometry for pre-highlight text
var sect = text.CEGuiSubstring(0, w.GetSelectionStart());
var colours = unselectedColours;
colours.ModulateAlpha(alphaComp);
var preHighlightTextGeomBuffers = font.CreateRenderGeometryForText(sect, out textPartRect.d_min.X, textPartRect.Position, textArea, true, colours);
w.AppendGeometryBuffers(preHighlightTextGeomBuffers);
// create render geometry for highlight text
sect = text.CEGuiSubstring(w.GetSelectionStart(), w.GetSelectionLength());
SetColourRectToSelectedTextColour(ref colours);
colours.ModulateAlpha(alphaComp);
var highlitTextGeomBuffers = font.CreateRenderGeometryForText(sect, out textPartRect.d_min.X, textPartRect.Position, textArea, true, colours);
w.AppendGeometryBuffers(highlitTextGeomBuffers);
// create render geometry for post-highlight text
sect = text.Substring(w.GetSelectionEnd());
colours = unselectedColours;
colours.ModulateAlpha(alphaComp);
var postHighlitTextGeomBuffers = font.CreateRenderGeometryForText(sect, out textPartRect.d_min.X, textPartRect.Position, textArea, true, colours);
w.AppendGeometryBuffers(postHighlitTextGeomBuffers);
}