diff options
Diffstat (limited to 'src/gfx.cpp')
-rw-r--r-- | src/gfx.cpp | 58 |
1 files changed, 56 insertions, 2 deletions
diff --git a/src/gfx.cpp b/src/gfx.cpp index b77e42585..a6b55953a 100644 --- a/src/gfx.cpp +++ b/src/gfx.cpp @@ -506,6 +506,50 @@ static int DrawLayoutLine(ParagraphLayout::Line *line, int y, int left, int righ int w = line->getWidth(); int h = line->getLeading(); + /* + * The following is needed for truncation. + * Depending on the text direction, we either remove bits at the rear + * or the front. For this we shift the entire area to draw so it fits + * within the left/right bounds and the side we do not truncate it on. + * Then we determine the truncation location, i.e. glyphs that fall + * outside of the range min_x - max_x will not be drawn; they are thus + * the truncated glyphs. + * + * At a later step we insert the dots. + */ + + int max_w = right - left + 1; // The maximum width. + + int offset_x = 0; // The offset we need for positioning the glyphs + int min_x = left; // The minimum x position to draw normal glyphs on. + int max_x = right; // The maximum x position to draw normal glyphs on. + + bool truncation = max_w < w; // Whether we need to do truncation. + int dot_width = 0; // Cache for the width of the dot. + const Sprite *dot_sprite = NULL; // Cache for the sprite of the dot. + + if (truncation) { + /* + * Assumption may be made that all fonts of a run are of the same size. + * In any case, we'll use these dots for the abbreviation, so even if + * another size would be chosen it won't have truncated too little for + * the truncation dots. + */ + FontCache *fc = ((const Font*)line->getVisualRun(0)->getFont())->fc; + GlyphID dot_glyph = fc->MapCharToGlyph('.'); + dot_width = fc->GetGlyphWidth(dot_glyph); + dot_sprite = fc->GetGlyph(dot_glyph); + + if (_current_text_dir == TD_RTL) { + min_x += 3 * dot_width; + offset_x = w - 3 * dot_width - max_w; + } else { + max_x -= 3 * dot_width; + } + + w = max_w; + } + /* In case we have a RTL language we swap the alignment. */ if (!(align & SA_FORCE) && _current_text_dir == TD_RTL && (align & SA_HOR_MASK) != SA_HOR_CENTER) align ^= SA_RIGHT; @@ -554,10 +598,13 @@ static int DrawLayoutLine(ParagraphLayout::Line *line, int y, int left, int righ /* Not a valid glyph (empty) */ if (glyph == 0xFFFF) continue; - int begin_x = run->getPositions()[i * 2] + left; - int end_x = run->getPositions()[i * 2 + 2] + left; + int begin_x = run->getPositions()[i * 2] + left - offset_x; + int end_x = run->getPositions()[i * 2 + 2] + left - offset_x - 1; int top = run->getPositions()[i * 2 + 1] + y; + /* Truncated away. */ + if (begin_x < min_x || end_x > max_x) continue; + /* Not within the bounds to draw. */ if (begin_x >= dpi_right || end_x <= dpi_left) continue; @@ -571,6 +618,13 @@ static int DrawLayoutLine(ParagraphLayout::Line *line, int y, int left, int righ } } + if (truncation) { + int x = (_current_text_dir == TD_RTL) ? left : (right - 3 * dot_width); + for (int i = 0; i < 3; i++, x += dot_width) { + GfxMainBlitter(dot_sprite, x, y, BM_COLOUR_REMAP); + } + } + if (underline) { GfxFillRect(left, y + h, right, y + h, _string_colourremap[1]); } |