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author | Tor Andersson <tor.andersson@artifex.com> | 2018-06-25 13:15:50 +0200 |
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committer | Tor Andersson <tor.andersson@artifex.com> | 2018-07-05 15:32:34 +0200 |
commit | 4a99615a609eec2b84bb2341d74fac46a5998137 (patch) | |
tree | 486eacff07448e4c655df1fa1bcb20df709dd8df /source/tools/mutrace.c | |
parent | 2aa62902447760764e7a763dea322145d9c4808c (diff) | |
download | mupdf-4a99615a609eec2b84bb2341d74fac46a5998137.tar.xz |
Pass rect and matrix by value in geometry functions.
Several things irk me about passing values as const pointers:
* They can be NULL, which is not a valid value.
* They require explicit temporary variables for storage.
* They don't compose easily in a legible manner, requiring
weird pointer passing semantics where the variable being assigned
is hidden as an argument in the innermost function call.
* We can't change the value through the pointer, requiring yet more
local variables to hold copies of the input value.
In the device interface where we pass a matrix to a function, we often
find ourselves making a local copy of the matrix so we can concatenate
other transforms to it. This copying is a lot of unnecessary busywork
that I hope to eventually avoid by laying the groundwork with this
commit.
This is a rather large API change, so I apologize for the inconvenience,
but I hope the end result and gain in legibility will be worth the pain.
Diffstat (limited to 'source/tools/mutrace.c')
-rw-r--r-- | source/tools/mutrace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/source/tools/mutrace.c b/source/tools/mutrace.c index 2baef7d1..350de919 100644 --- a/source/tools/mutrace.c +++ b/source/tools/mutrace.c @@ -44,7 +44,7 @@ static void runpage(fz_context *ctx, fz_document *doc, int number) fz_try(ctx) { page = fz_load_page(ctx, doc, number - 1); - fz_bound_page(ctx, page, &mediabox); + mediabox = fz_bound_page(ctx, page); printf("<page number=\"%d\" mediabox=\"%g %g %g %g\">\n", number, mediabox.x0, mediabox.y0, mediabox.x1, mediabox.y1); dev = fz_new_trace_device(ctx, fz_stdout(ctx)); |