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Added 'paragraph height' property to split a text field into multiple boxes.

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git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@666 0fc631ac-6414-0410-93d0-97cfa31319b6
This commit is contained in:
twanvl
2007-09-02 21:00:49 +00:00
parent 749a04e822
commit 54fdc78858
5 changed files with 46 additions and 15 deletions
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src/render/text/viewer.cpp
+39 -15
View File
@@ -635,17 +635,37 @@ double TextViewer::lineRight(RotatedDC& dc, const TextStyle& style, double y) co
void TextViewer::alignLines(RotatedDC& dc, const vector<CharInfo>& 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<CharInfo>& 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<CharInfo>& 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<CharInfo>& 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<CharInfo>& 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<CharInfo>& 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<CharInfo>& 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;
}