diff options
Diffstat (limited to 'source/html/html-layout.c')
| -rw-r--r-- | source/html/html-layout.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/source/html/html-layout.c b/source/html/html-layout.c index c0a660ae..bb4dd21c 100644 --- a/source/html/html-layout.c +++ b/source/html/html-layout.c @@ -1177,6 +1177,25 @@ static void layout_flow(fz_context *ctx, fz_html *box, fz_html *top, float page_ } } +static int layout_block_page_break(fz_context *ctx, fz_html *box, float page_h, float vertical, int page_break) +{ + if (page_break == PB_ALWAYS || page_break == PB_LEFT || page_break == PB_RIGHT) + { + float avail = page_h - fmodf(box->y + box->h - vertical, page_h); + int number = (box->y + box->h + (page_h * 0.1f)) / page_h; + if (avail > 0 && avail < page_h) + { + box->h += avail - vertical; + if (page_break == PB_LEFT && (number & 1) == 0) /* right side pages are even */ + box->h += page_h; + if (page_break == PB_RIGHT && (number & 1) == 1) /* left side pages are odd */ + box->h += page_h; + return 1; + } + } + return 0; +} + static float layout_block(fz_context *ctx, fz_html *box, fz_html *top, float page_h, float vertical, hb_buffer_t *hb_buf) { fz_html *child; @@ -1204,6 +1223,11 @@ static float layout_block(fz_context *ctx, fz_html *box, fz_html *top, float pag border[2] = style->border_style[2] ? fz_from_css_number(style->border_width[2], em, top->w) : 0; border[3] = style->border_style[3] ? fz_from_css_number(style->border_width[3], em, top->w) : 0; + /* TODO: remove 'vertical' margin adjustments across automatic page breaks */ + + if (layout_block_page_break(ctx, top, page_h, vertical, style->page_break_before)) + vertical = 0; + box->x = top->x + margin[L] + border[L] + padding[L]; box->w = top->w - (margin[L] + margin[R] + border[L] + border[R] + padding[L] + padding[R]); @@ -1264,6 +1288,12 @@ static float layout_block(fz_context *ctx, fz_html *box, fz_html *top, float pag vertical = 0; } + if (layout_block_page_break(ctx, box, page_h, 0, style->page_break_after)) + { + vertical = 0; + margin[B] = 0; + } + if (box->h == 0) { if (margin[B] > vertical) |