diff --git a/doc/type/style.txt b/doc/type/style.txt
index 4a81609d..50b04a83 100644
--- a/doc/type/style.txt
+++ b/doc/type/style.txt
@@ -76,6 +76,8 @@ The rest of the properties depend on the type of [[type:field]] this style is fo
| ^^^ @line height soft max@ ^^^ ''disabled'' When there is still vertical room in the text box, increase the line heights to at most these values to spread the text more evenly.
| ^^^ @line height hard max@ ^^^ ^^^ ^^^
| ^^^ @line height line max@ ^^^ ^^^ ^^^
+| ^^^ @paragraph height@ [[type:double]] ''flexible'' The height of paragraphs. If specified, each paragraph is given this much space, and aligned inside that space as specified by @alignment@.
+ A paragraph break is any line break that is not soft (i.e. caused by word wrap or a @""@ break).
| ^^^ @mask@ [[type:filename]] ''none'' A mask that indicates where in the box text can be placed.
Text is never put in black areas of the box:
diff --git a/src/data/field/text.cpp b/src/data/field/text.cpp
index 5ec457f1..abc90c8e 100644
--- a/src/data/field/text.cpp
+++ b/src/data/field/text.cpp
@@ -55,6 +55,7 @@ TextStyle::TextStyle(const TextFieldP& field)
, line_height_soft_max(0.0)
, line_height_hard_max(0.0)
, line_height_line_max(0.0)
+ , paragraph_height(-1)
, direction(LEFT_TO_RIGHT)
{}
@@ -114,6 +115,7 @@ IMPLEMENT_REFLECTION(TextStyle) {
REFLECT(line_height_soft_max);
REFLECT(line_height_hard_max);
REFLECT(line_height_line_max);
+ REFLECT(paragraph_height);
REFLECT_N("mask", mask_filename);
REFLECT(direction);
reflect_content(tag, *this);
diff --git a/src/data/field/text.hpp b/src/data/field/text.hpp
index c0aace94..c7ed4559 100644
--- a/src/data/field/text.hpp
+++ b/src/data/field/text.hpp
@@ -68,6 +68,7 @@ class TextStyle : public Style {
double line_height_soft_max; ///< Maximum line height
double line_height_hard_max; ///< Maximum line height
double line_height_line_max; ///< Maximum line height
+ double paragraph_height; ///< Fixed height of paragraphs
String mask_filename; ///< Filename of the mask
ContourMask mask; ///< Mask to fit the text to (may be null)
Direction direction; ///< In what direction is text layed out?
diff --git a/src/render/text/viewer.cpp b/src/render/text/viewer.cpp
index ba2e78f2..930e541c 100644
--- a/src/render/text/viewer.cpp
+++ b/src/render/text/viewer.cpp
@@ -635,17 +635,37 @@ double TextViewer::lineRight(RotatedDC& dc, const TextStyle& style, double y) co
void TextViewer::alignLines(RotatedDC& dc, const vector& chars, const TextStyle& style) {
- // Find height of the text, don't count the last lines if they are empty
- double height = 0;
- FOR_EACH_REVERSE(l, lines) {
- height = l.top + l.line_height;
- if (l.line_height) break; // not an empty line
- }
- // amount to shift all lines vertically
+ // Size of the box
RealSize s = add_diagonal(
dc.getInternalSize(),
-RealSize(style.padding_left+style.padding_right, style.padding_top + style.padding_bottom));
-
+ if (style.paragraph_height <= 0) {
+ // whole text box alignment
+ alignParagraph(0, lines.size(), chars, style, RealRect(RealPoint(0,0),s));
+ } else {
+ // per paragraph alignment
+ size_t start = 0;
+ int n = 0;
+ for (size_t last = 0 ; last < lines.size() ; ++last) {
+ if (lines[last].break_after != BREAK_SOFT || last == lines.size()) {
+ alignParagraph(start, last + 1, chars, style, RealRect(0, n*style.paragraph_height, s.width, style.paragraph_height));
+ start = last + 1;
+ ++n;
+ }
+ }
+ }
+}
+
+void TextViewer::alignParagraph(size_t start_line, size_t end_line, const vector& chars, const TextStyle& style, const RealRect& s) {
+ if (start_line >= end_line) return;
+ // Find height of the text, don't count the last lines if they are empty
+ double height = 0;
+ for (size_t li = end_line - 1 ; li + 1 > start_line ; --li) {
+ Line& l = lines[li];
+ height = l.top + l.line_height;
+ if (l.line_height) break; // not an empty line
+ }
+ height -= lines[start_line].top;
// stretch lines by increasing the space between them
if (height < s.height) {
double d_soft = max(0.0, style.line_height_soft_max - style.line_height_soft);
@@ -662,7 +682,8 @@ void TextViewer::alignLines(RotatedDC& dc, const vector& chars, const
bool line = d_line >= stop;
// sum of the line height we can apply this to?
double sum = 0;
- FOR_EACH(l, lines) {
+ for (size_t li = start_line ; li < end_line ; ++li) {
+ const Line& l = lines[li];
if ((soft && l.break_after == BREAK_SOFT)
|| (hard && l.break_after == BREAK_HARD)
|| (line && l.break_after == BREAK_LINE)) sum += l.line_height;
@@ -672,7 +693,8 @@ void TextViewer::alignLines(RotatedDC& dc, const vector& chars, const
double to_add = min(stop, (s.height - height) / sum);
// apply
double add = 0;
- FOR_EACH(l, lines) {
+ for (size_t li = start_line ; li < end_line ; ++li) {
+ Line& l = lines[li];
l.top += add;
// adjust next line by..
if ((soft && l.break_after == BREAK_SOFT)
@@ -684,9 +706,11 @@ void TextViewer::alignLines(RotatedDC& dc, const vector& chars, const
}
if (style.alignment == ALIGN_TOP_LEFT) return;
// align
- double vdelta = align_delta_y(style.alignment, s.height, height);
+ double vdelta = align_delta_y(style.alignment, s.height, height)
+ + s.y - lines[start_line].top;
// align all lines
- FOR_EACH(l, lines) {
+ for (size_t li = start_line ; li < end_line ; ++li) {
+ Line& l = lines[li];
l.top += vdelta;
// amount to shift all characters horizontally
double width = l.positions[l.end_or_soft - l.start];
@@ -699,7 +723,7 @@ void TextViewer::alignLines(RotatedDC& dc, const vector& chars, const
if (count <= 0) count = 1; // prevent div by 0
int i = 0;
FOR_EACH(c, l.positions) {
- c += hdelta * i++ / count;
+ c += s.x + hdelta * i++ / count;
}
} else if (style.alignment & ALIGN_JUSTIFY_WORDS) {
// justify text, by words
@@ -712,13 +736,13 @@ void TextViewer::alignLines(RotatedDC& dc, const vector& chars, const
if (count == 0) count = 1; // prevent div by 0
int i = 0; size_t j = l.start;
FOR_EACH(c, l.positions) {
- c += hdelta * i / count;
+ c += s.x + hdelta * i / count;
if (j < l.end_or_soft && chars[j++].break_after == BREAK_SPACE) i++;
}
} else {
// simple alignment
justifying = false;
- double hdelta = align_delta_x(style.alignment, s.width, width);
+ double hdelta = s.x + align_delta_x(style.alignment, s.width, width);
FOR_EACH(c, l.positions) {
c += hdelta;
}
diff --git a/src/render/text/viewer.hpp b/src/render/text/viewer.hpp
index b2368df4..0bac7d54 100644
--- a/src/render/text/viewer.hpp
+++ b/src/render/text/viewer.hpp
@@ -143,6 +143,8 @@ class TextViewer {
bool prepareLinesScale(RotatedDC& dc, const vector& chars, const TextStyle& style, bool stop_if_too_long, vector& lines_out) const;
/// Align the lines within the textbox
void alignLines(RotatedDC& dc, const vector& chars, const TextStyle& style);
+ /// Align the lines of a single paragraph (a set of lines)
+ void alignParagraph(size_t start_line, size_t end_line, const vector& chars, const TextStyle& style, const RealRect& box);
/// Find the line the given index is on, returns the first line if the index is not found
const Line& findLine(size_t index) const;