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text scaling

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git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@168 0fc631ac-6414-0410-93d0-97cfa31319b6
This commit is contained in:
twanvl
2006-12-24 16:04:24 +00:00
parent 99867b0c0b
commit 1ab6b0cb82
7 changed files with 49 additions and 52 deletions
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src/render/text/viewer.cpp
+24 -8
View File
@@ -304,15 +304,26 @@ void TextViewer::prepareElements(const String& text, const TextStyle& style, Con
// ----------------------------------------------------------------------------- : Layout
void TextViewer::prepareLines(RotatedDC& dc, const String& text, const TextStyle& style, Context& ctx) {
// find character sizes
vector<CharInfo> chars;
// try to layout, at different scales
vector<CharInfo> chars;
scale = 1;
// double min_scale = elements.minScale();
// while
chars.clear();
elements.getCharInfo(dc, scale, 0, text.size(), chars);
prepareLinesScale(dc, chars, style, false);
double min_scale = elements.minScale();
double scale_step = max(0.1,elements.scaleStep());
while (true) {
double next_scale = scale - scale_step;
bool last = next_scale < min_scale;
// fits?
chars.clear();
elements.getCharInfo(dc, scale, 0, text.size(), chars);
bool fits = prepareLinesScale(dc, chars, style, last);
if (fits && (lines.empty() || lines.back().bottom() <= dc.getInternalSize().height - style.padding_bottom)) {
break; // text fits in box
}
if (last) break;
// TODO: smarter iteration
scale = next_scale;
}
// no text, find a dummy height for the single line we have
if (lines.size() == 1 && lines[0].width() < 0.0001) {
if (style.always_symbol && style.symbol_font.valid()) {
@@ -322,8 +333,10 @@ void TextViewer::prepareLines(RotatedDC& dc, const String& text, const TextStyle
lines[0].line_height = dc.GetTextExtent(_(" ")).height;
}
}
// align
alignLines(dc, chars, style);
// HACK : fix empty first line before <line>, do this after align, so layout is not affected
if (lines.size() > 1 && lines[0].line_height == 0) {
dc.SetFont(style.font.font);
@@ -338,6 +351,7 @@ bool TextViewer::prepareLinesScale(RotatedDC& dc, const vector<CharInfo>& chars,
// first line
lines.clear();
Line line;
line.top = style.padding_top;
// size of the line so far
RealSize line_size(lineLeft(dc, style, 0), 0);
line.positions.push_back(line_size.width);
@@ -462,7 +476,9 @@ void TextViewer::alignLines(RotatedDC& dc, const vector<CharInfo>& chars, const
if (l.line_height) break; // not an empty line
}
// amount to shift all lines vertically
RealSize s = dc.getInternalSize();
RealSize s = addDiagonal(
dc.getInternalSize(),
-RealSize(style.padding_left+style.padding_right, style.padding_top + style.padding_bottom));
double vdelta = align_delta_y(style.alignment, s.height, height);
// align all lines
FOR_EACH(l, lines) {