Improved input method support by M. Iwami. I fixed some typo, and simplified the...

[lyx.git] / src / frontends / Painter.C

diff --git a/src/frontends/Painter.C b/src/frontends/Painter.C
index e893aafdbb5bf0c6004ef3cf692e147fb1d25140..845106188a1c99dce21788b115833725a9db67f0 100644 (file)
--- a/src/frontends/Painter.C
+++ b/src/frontends/Painter.C
@@ -84,6 +84,39 @@ void Painter::buttonText(int x, int y, docstring const & str,
 }
 
 
+int Painter::preeditText(int x, int y, char_type c,
+       LyXFont const & font, preedit_style style)
+{
+       LyXFont temp_font = font;
+       FontMetrics const & fm = theFontMetrics(font);
+       int ascent = fm.maxAscent();
+       int descent = fm.maxDescent();
+       int height = ascent + descent;
+       int width = fm.width(c);
+
+       switch (style) {
+               case preedit_default:
+                       // default unselecting mode.
+                       fillRectangle(x, y - height + 1, width, height, LColor::background);
+                       dashedUnderline(font, x, y - descent + 1, width);
+                       break;
+               case preedit_selecting:
+                       // We are in selecting mode: white text on black background.
+                       fillRectangle(x, y - height + 1, width, height, LColor::black);
+                       temp_font.setColor(LColor::white);
+                       break;
+               case preedit_cursor:
+                       // The character comes with a cursor.
+                       fillRectangle(x, y - height + 1, width, height, LColor::background);
+                       underline(font, x, y - descent + 1, width);
+                       break;
+       }
+       text(x, y - descent + 1, c, temp_font);
+
+       return width;
+}
+
+
 void Painter::underline(LyXFont const & f, int x, int y, int width)
 {
        FontMetrics const & fm = theFontMetrics(f);
@@ -97,5 +130,20 @@ void Painter::underline(LyXFont const & f, int x, int y, int width)
                fillRectangle(x, y + below, width, below + height, f.color());
 }
 
+
+void Painter::dashedUnderline(LyXFont const & f, int x, int y, int width)
+{
+       FontMetrics const & fm = theFontMetrics(f);
+
+       int const below = max(fm.maxDescent() / 2, 2);
+       int height = max((fm.maxDescent() / 4) - 1, 1);
+
+       if (height >= 2)
+               height += below;
+
+       for (int n = 0; n < height; ++n)
+               line(x, y + below + n, x + width, y + below + n, f.color(), line_onoffdash);
+}
+
 } // namespace frontend
 } // namespace lyx