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yaft: make font rendering more reliable

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at least with older freetype versions, font widths are not reported
reliably, so use a better way to determine the width and use a bigger
painting box for the fontrenderer so it does not skip rendering for
space reasons
This commit is contained in:
Stefan Seyfried
2018-01-28 17:04:16 +01:00
committed by Thilo Graf
parent 803aacf6a6
commit 22a2356b84
1 changed files with 7 additions and 2 deletions
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9
src/gui/widget/yaft/yaft_priv.cpp
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@@ -131,9 +131,13 @@ bool YaFT_p::init()
fr = new FBFontRenderClass(scalex, scaley);
fontstyle = fr->AddFont(ttx_font_file.c_str());
font = fr->getFont(fr->getFamily(ttx_font_file.c_str()).c_str(), fontstyle, height / LINES);
/* getWidth() does not return good values, leading to "out of box" rendering later
fw = font->getWidth();
... so just let's get the width of a wide glyph (it's a monospace font after all */
fw = font->getRenderWidth("@");
fh = font->getHeight();
fprintf(stderr, "FONT[%d]: fw %d fh: %d sx %d sy %d w %d h %d\n", i, fw, fh, scalex, scaley, width, height);
fprintf(stderr, "FONT[%d]: fw %2d(%2d) fh: %2d sx %d sy %d w %d h %d\n",
i, fw, font->getWidth(), fh, scalex, scaley, width, height);
scalex = 64 * width / (fw * COLS) + 1;
scaley = 64 * height / (fh * LINES) + 1;
}
@@ -774,7 +778,8 @@ void YaFT_p::draw_line(int line)
}
if (cellp->utf8_str.empty())
continue;
font->RenderString(col * CELL_WIDTH, (line + 1) * CELL_HEIGHT, CELL_WIDTH, cellp->utf8_str,
int xs = col * CELL_WIDTH;
font->RenderString(xs, (line + 1) * CELL_HEIGHT, width - xs, cellp->utf8_str,
fb.real_palette[col_pair.fg], mod, Font::IS_UTF8, fb.buf, fb.width * sizeof(fb_pixel_t));
}
line_dirty[line] = ((mode & MODE_CURSOR) && cursor.y == line) ? true: false;