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| author | Tor Andersson <tor.andersson@artifex.com> | 2014-11-14 11:15:58 +0100 |
|---|---|---|
| committer | Tor Andersson <tor.andersson@artifex.com> | 2014-12-03 12:25:52 +0100 |
| commit | b3a9f7e5d838e095a5cf4f6d73a73316089190ec (patch) | |
| tree | 96b8677b4d7d39037d007f2a1aa9e43972e32488 /source/html/layout.c | |
| parent | 8758df6c290525eb2246977d84816d171e95309b (diff) | |
| download | mupdf-b3a9f7e5d838e095a5cf4f6d73a73316089190ec.tar.xz | |
html: Only draw the boxes and lines if they're on the current page.
Diffstat (limited to 'source/html/layout.c')
| -rw-r--r-- | source/html/layout.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/source/html/layout.c b/source/html/layout.c index 00ad79f6..9533e634 100644 --- a/source/html/layout.c +++ b/source/html/layout.c @@ -495,7 +495,7 @@ static void print_box(fz_context *ctx, struct box *box, int level) } static void -draw_flow_box(fz_context *ctx, struct box *box, fz_device *dev, const fz_matrix *ctm) +draw_flow_box(fz_context *ctx, struct box *box, float page_top, float page_bot, fz_device *dev, const fz_matrix *ctm) { struct flow *node; fz_text *text; @@ -509,6 +509,9 @@ draw_flow_box(fz_context *ctx, struct box *box, fz_device *dev, const fz_matrix for (node = box->flow_head; node; node = node->next) { + if (node->y > page_bot || node->y + node->h < page_top) + continue; + if (node->type == FLOW_WORD) { fz_scale(&trm, node->em, -node->em); @@ -533,7 +536,7 @@ draw_flow_box(fz_context *ctx, struct box *box, fz_device *dev, const fz_matrix } static void -draw_block_box(fz_context *ctx, struct box *box, fz_device *dev, const fz_matrix *ctm) +draw_block_box(fz_context *ctx, struct box *box, float page_top, float page_bot, fz_device *dev, const fz_matrix *ctm) { fz_path *path; float black[1]; @@ -549,6 +552,9 @@ draw_block_box(fz_context *ctx, struct box *box, fz_device *dev, const fz_matrix x1 = box->x + box->w + box->padding[RIGHT]; y1 = box->y + box->h + box->padding[BOTTOM]; + if (y0 > page_bot || y1 < page_top) + return; + path = fz_new_path(ctx); fz_moveto(ctx, path, x0, y0); fz_lineto(ctx, path, x1, y0); @@ -564,18 +570,18 @@ draw_block_box(fz_context *ctx, struct box *box, fz_device *dev, const fz_matrix { switch (box->type) { - case BOX_BLOCK: draw_block_box(ctx, box, dev, ctm); break; - case BOX_FLOW: draw_flow_box(ctx, box, dev, ctm); break; + case BOX_BLOCK: draw_block_box(ctx, box, page_top, page_bot, dev, ctm); break; + case BOX_FLOW: draw_flow_box(ctx, box, page_top, page_bot, dev, ctm); break; } } } void -html_run_box(fz_context *ctx, struct box *box, float offset, fz_device *dev, const fz_matrix *inctm) +html_run_box(fz_context *ctx, struct box *box, float page_top, float page_bot, fz_device *dev, const fz_matrix *inctm) { fz_matrix ctm = *inctm; - fz_pre_translate(&ctm, 0, -offset); - draw_block_box(ctx, box, dev, &ctm); + fz_pre_translate(&ctm, 0, -page_top); + draw_block_box(ctx, box, page_top, page_bot, dev, &ctm); } static char *concat_text(fz_context *ctx, fz_xml *root) |