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Respect orientation when selecting words

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Resolves: #1185007
This commit is contained in:
Marek Kasik 2015-03-26 17:05:01 +01:00
parent 7a8e2d1dfe
commit a5d38f8b35
2 changed files with 294 additions and 1 deletions
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285
poppler-0.30.0-rotated-words-selection.patch Normal file
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@ -0,0 +1,285 @@
From 0ab1f29d4ce315b0fca260c0e0f3007024d00342 Mon Sep 17 00:00:00 2001
From: Marek Kasik <mkasik@redhat.com>
Date: Tue, 28 Jan 2014 15:13:24 +0100
Subject: [PATCH] TextOutputDev: Respect orientation when selecting words
Take rotation into account when visiting selection.
This doesn't fix all problems (there are still problems
on line and block levels).
https://bugs.freedesktop.org/show_bug.cgi?id=16619
---
poppler/TextOutputDev.cc | 193 ++++++++++++++++++++++++++++++++++++-----------
1 file changed, 150 insertions(+), 43 deletions(-)
diff --git a/poppler/TextOutputDev.cc b/poppler/TextOutputDev.cc
index 7c2ca78..e93908c 100644
--- a/poppler/TextOutputDev.cc
+++ b/poppler/TextOutputDev.cc
@@ -173,6 +173,12 @@
// Max distance between edge of text and edge of link border
#define hyperlinkSlack 2
+// Returns whether x is between a and b or equal to a or b.
+// a and b don't need to be sorted.
+#define XBetweenAB(x,a,b) (!(((x) > (a) && (x) > (b)) || \
+ ((x) < (a) && (x) < (b))) ? \
+ gTrue : gFalse)
+
//------------------------------------------------------------------------
// TextUnderline
//------------------------------------------------------------------------
@@ -4222,11 +4228,37 @@ void TextSelectionSizer::visitLine (TextLine *line,
PDFRectangle *rect;
double x1, y1, x2, y2, margin;
- margin = (line->yMax - line->yMin) / 8;
- x1 = line->edge[edge_begin];
- y1 = line->yMin - margin;
- x2 = line->edge[edge_end];
- y2 = line->yMax + margin;
+ switch (line->rot) {
+ default:
+ case 0:
+ margin = (line->yMax - line->yMin) / 8;
+ x1 = line->edge[edge_begin];
+ x2 = line->edge[edge_end];
+ y1 = line->yMin - margin;
+ y2 = line->yMax + margin;
+ break;
+ case 1:
+ margin = (line->xMax - line->xMin) / 8;
+ x1 = line->xMin - margin;
+ x2 = line->xMax + margin;
+ y1 = line->edge[edge_begin];
+ y2 = line->edge[edge_end];
+ break;
+ case 2:
+ margin = (line->yMax - line->yMin) / 8;
+ x1 = line->edge[edge_end];
+ x2 = line->edge[edge_begin];
+ y1 = line->yMin - margin;
+ y2 = line->yMax + margin;
+ break;
+ case 3:
+ margin = (line->xMax - line->xMin) / 8;
+ x1 = line->xMin - margin;
+ x2 = line->xMax + margin;
+ y1 = line->edge[edge_end];
+ y2 = line->edge[edge_begin];
+ break;
+ }
rect = new PDFRectangle (floor (x1 * scale),
floor (y1 * scale),
@@ -4310,19 +4341,56 @@ void TextSelectionPainter::visitLine (TextLine *line,
{
double x1, y1, x2, y2, margin;
- margin = (line->yMax - line->yMin) / 8;
- x1 = floor (line->edge[edge_begin]);
- y1 = floor (line->yMin - margin);
- x2 = ceil (line->edge[edge_end]);
- y2 = ceil (line->yMax + margin);
+ switch (line->rot) {
+ default:
+ case 0:
+ margin = (line->yMax - line->yMin) / 8;
+ x1 = line->edge[edge_begin];
+ x2 = line->edge[edge_end];
+ y1 = line->yMin - margin;
+ y2 = line->yMax + margin;
+ break;
+ case 1:
+ margin = (line->xMax - line->xMin) / 8;
+ x1 = line->xMin - margin;
+ x2 = line->xMax + margin;
+ y1 = line->edge[edge_begin];
+ y2 = line->edge[edge_end];
+ break;
+ case 2:
+ margin = (line->yMax - line->yMin) / 8;
+ x1 = line->edge[edge_end];
+ x2 = line->edge[edge_begin];
+ y1 = line->yMin - margin;
+ y2 = line->yMax + margin;
+ break;
+ case 3:
+ margin = (line->xMax - line->xMin) / 8;
+ x1 = line->xMin - margin;
+ x2 = line->xMax + margin;
+ y1 = line->edge[edge_end];
+ y2 = line->edge[edge_begin];
+ break;
+ }
+
+ ctm.transform(x1, y1, &x1, &y1);
+ ctm.transform(x2, y2, &x2, &y2);
- ctm.transform(line->edge[edge_begin], line->yMin - margin, &x1, &y1);
- ctm.transform(line->edge[edge_end], line->yMax + margin, &x2, &y2);
+ if (x1 < x2) {
+ x1 = floor (x1);
+ x2 = ceil (x2);
+ } else {
+ x1 = ceil (x1);
+ x2 = floor (x2);
+ }
- x1 = floor (x1);
- y1 = floor (y1);
- x2 = ceil (x2);
- y2 = ceil (y2);
+ if (y1 < y2) {
+ y1 = floor (y1);
+ y2 = ceil (y2);
+ } else {
+ y1 = ceil (y1);
+ y2 = floor (y2);
+ }
ictm.transform(x1, y1, &x1, &y1);
ictm.transform(x2, y2, &x2, &y2);
@@ -4400,17 +4467,27 @@ void TextWord::visitSelection(TextSelectionVisitor *visitor,
SelectionStyle style)
{
int i, begin, end;
- double mid;
+ double mid, s1, s2;
+
+ if (rot == 0 || rot == 2) {
+ s1 = selection->x1;
+ s2 = selection->x2;
+ } else {
+ s1 = selection->y1;
+ s2 = selection->y2;
+ }
begin = len;
end = 0;
for (i = 0; i < len; i++) {
mid = (edge[i] + edge[i + 1]) / 2;
- if (selection->x1 < mid || selection->x2 < mid)
- if (i < begin)
- begin = i;
- if (mid < selection->x1 || mid < selection->x2)
- end = i + 1;
+ if (XBetweenAB (mid, s1, s2))
+ {
+ if (i < begin)
+ begin = i;
+
+ end = i + 1;
+ }
}
/* Skip empty selection. */
@@ -4426,30 +4503,41 @@ void TextLine::visitSelection(TextSelectionVisitor *visitor,
TextWord *p, *begin, *end, *current;
int i, edge_begin, edge_end;
PDFRectangle child_selection;
+ double s1, s2, p_min, p_max;
+
+ if (rot == 0 || rot == 2) {
+ s1 = selection->x1;
+ s2 = selection->x2;
+ } else {
+ s1 = selection->y1;
+ s2 = selection->y2;
+ }
begin = NULL;
end = NULL;
current = NULL;
for (p = words; p != NULL; p = p->next) {
+ if (rot == 0 || rot == 2) {
+ p_min = p->xMin;
+ p_max = p->xMax;
+ } else {
+ p_min = p->yMin;
+ p_max = p->yMax;
+ }
+
if (blk->page->primaryLR) {
- if ((selection->x1 < p->xMax) ||
- (selection->x2 < p->xMax))
- if (begin == NULL)
- begin = p;
+ if (((s1 < p_max) || (s2 < p_max)) && begin == NULL)
+ begin = p;
- if (((selection->x1 > p->xMin) ||
- (selection->x2 > p->xMin)) && (begin != NULL)) {
+ if (((s1 > p_min) || (s2 > p_min)) && begin != NULL) {
end = p->next;
current = p;
}
} else {
- if ((selection->x1 > p->xMin) ||
- (selection->x2 > p->xMin))
- if (begin == NULL)
- begin = p;
+ if (((s1 > p_min) || (s2 > p_min)) && begin == NULL)
+ begin = p;
- if (((selection->x1 < p->xMax) ||
- (selection->x2 < p->xMax)) && (begin != NULL)) {
+ if (((s1 < p_max) || (s2 < p_max)) && begin != NULL) {
end = p->next;
current = p;
}
@@ -4461,23 +4549,42 @@ void TextLine::visitSelection(TextSelectionVisitor *visitor,
child_selection = *selection;
if (style == selectionStyleWord) {
- child_selection.x1 = begin ? begin->xMin : xMin;
- if (end && end->xMax != -1) {
- child_selection.x2 = current->xMax;
+ if (rot == 0 || rot == 2) {
+ child_selection.x1 = begin ? begin->xMin : xMin;
+ if (end && end->xMax != -1) {
+ child_selection.x2 = current->xMax;
+ } else {
+ child_selection.x2 = xMax;
+ }
} else {
- child_selection.x2 = xMax;
+ child_selection.y1 = begin ? begin->yMin : yMin;
+ if (end && end->yMax != -1) {
+ child_selection.y2 = current->yMax;
+ } else {
+ child_selection.y2 = yMax;
+ }
}
}
+ if (rot == 0 || rot == 2) {
+ s1 = child_selection.x1;
+ s2 = child_selection.x2;
+ } else {
+ s1 = child_selection.y1;
+ s2 = child_selection.y2;
+ }
+
edge_begin = len;
edge_end = 0;
for (i = 0; i < len; i++) {
double mid = (edge[i] + edge[i + 1]) / 2;
- if (child_selection.x1 < mid || child_selection.x2 < mid)
- if (i < edge_begin)
- edge_begin = i;
- if (mid < child_selection.x2 || mid < child_selection.x1)
- edge_end = i + 1;
+ if (XBetweenAB (mid, s1, s2))
+ {
+ if (i < edge_begin)
+ edge_begin = i;
+
+ edge_end = i + 1;
+ }
}
/* Skip empty selection. */
--
1.8.4.2

10
poppler.spec
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@ -1,12 +1,15 @@
Summary: PDF rendering library
Name: poppler
Version: 0.30.0
Release: 3%{?dist}
Release: 4%{?dist}
License: (GPLv2 or GPLv3) and GPLv2+ and LGPLv2+ and MIT
Group: Development/Libraries
URL: http://poppler.freedesktop.org/
Source0: http://poppler.freedesktop.org/poppler-%{version}.tar.xz
# https://bugzilla.redhat.com/show_bug.cgi?id=1185007
Patch0: poppler-0.30.0-rotated-words-selection.patch
## upstreamable patches
# fix configure checks for moc versions
Patch50: poppler-0.24.2-mocversiongrep.patch
@ -143,6 +146,7 @@ Requires: %{name}-glib%{?_isa} = %{version}-%{release}
%prep
%setup -q
%patch0 -p1 -b .rotated-words-selection
%patch50 -p1 -b .mocversiongrep
@ -278,6 +282,10 @@ test "$(pkg-config --modversion poppler-splash)" = "%{version}"
%changelog
* Thu Mar 26 2015 Marek Kasik <mkasik@redhat.com> - 0.30.0-4
- Respect orientation when selecting words
- Resolves: #1185007
* Sat Feb 21 2015 Till Maas <opensource@till.name> - 0.30.0-3
- Rebuilt for Fedora 23 Change
https://fedoraproject.org/wiki/Changes/Harden_all_packages_with_position-independent_code