From cd39e3af11eb9537e6e6ac2db2ee90fd3c01cb08 Mon Sep 17 00:00:00 2001 From: Ben Pfaff Date: Thu, 11 Jun 2009 21:54:15 -0700 Subject: [PATCH] cairo: Fix values of prop_em_width, fixed_width. For some reason prop_em_width and fixed_width were getting very small values, e.g. 5 and 7, when they were being pulled from the font metrics. These values should be more like 1024 times larger and I can't figure why they aren't. But this works around the problem for now. --- src/output/cairo.c | 30 ++++++++++++++++++++++++------ 1 file changed, 24 insertions(+), 6 deletions(-) diff --git a/src/output/cairo.c b/src/output/cairo.c index 23a93287..a60b5ebd 100644 --- a/src/output/cairo.c +++ b/src/output/cairo.c @@ -117,6 +117,7 @@ static void draw_headers (struct outp_driver *this); static bool load_font (struct outp_driver *this, struct xr_font *); static void free_font (struct xr_font *); +static int text_width (struct outp_driver *, const char *, enum outp_font); /* Driver initialization. */ @@ -215,10 +216,8 @@ xr_open_driver (struct outp_driver *this, struct substring options) goto error; } - this->fixed_width = pango_font_metrics_get_approximate_char_width ( - x->fonts[OUTP_FIXED].metrics); - this->prop_em_width = pango_font_metrics_get_approximate_char_width ( - x->fonts[OUTP_PROPORTIONAL].metrics); + this->fixed_width = text_width (this, "0", OUTP_FIXED); + this->prop_em_width = text_width (this, "0", OUTP_PROPORTIONAL); this->horiz_line_width[OUTP_L_NONE] = 0; this->horiz_line_width[OUTP_L_SINGLE] = 2 * x->line_gutter + x->line_width; @@ -621,6 +620,25 @@ draw_text (struct outp_driver *this, return width; } +/* Writes STRING at location (X,Y) trimmed to the given MAX_WIDTH + and with the given JUSTIFICATION for THIS driver. */ +static int +text_width (struct outp_driver *this, const char *string, enum outp_font font) +{ + struct outp_text text; + int width; + + text.font = font; + text.justification = OUTP_LEFT; + text.string = ss_cstr (string); + text.h = INT_MAX; + text.v = this->font_height; + text.x = 0; + text.y = 0; + this->class->text_metrics (this, &text, &width, NULL); + return width; +} + /* Writes LEFT left-justified and RIGHT right-justified within (X0...X1) at Y. LEFT or RIGHT or both may be null. */ static void @@ -780,11 +798,11 @@ load_font (struct outp_driver *this, struct xr_font *font) error (0, 0, _("\"%s\": bad font specification"), font->string); return false; } - pango_font_description_set_size (font->desc, this->font_height * 5 / 6); + pango_font_description_set_absolute_size (font->desc, this->font_height); font->layout = pango_cairo_create_layout (x->cairo); + pango_cairo_update_layout (x->cairo, font->layout); pango_layout_set_font_description (font->layout, font->desc); - pango_layout_set_spacing (font->layout, this->font_height / 6); language = pango_language_get_default (); context = pango_layout_get_context (font->layout); -- 2.30.2