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Improved search algorithm for determining text size:

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- check using previous scale, often gives correct answer when typing
 - binary search + bound estimation otherwise
This allows the step size to be decreased, giving a better fit.

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@624 0fc631ac-6414-0410-93d0-97cfa31319b6
This commit is contained in:
twanvl
2007-08-24 20:04:26 +00:00
parent 74db393f61
commit f12bc70425
7 changed files with 149 additions and 63 deletions
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src/render/text/viewer.hpp
+9 -4
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@@ -57,7 +57,9 @@ class TextViewer {
/** Returns true if something has been done */
bool prepare(RotatedDC& dc, const String& text, TextStyle& style, Context&);
/// Reset the cached data, at a new call to draw it will be recalculated
void reset();
/** If related, the new value is related to the old one, and layout information should be reused where possible
*/
void reset(bool related);
/// Is the viewer prepare()d?
bool prepared() const;
@@ -134,8 +136,11 @@ class TextViewer {
/// Prepare the lines, layout the text
void prepareLines(RotatedDC& dc, const String& text, TextStyle& style, Context& ctx);
/// Find the scale to use for the text
void prepareLinesTryScales(RotatedDC& dc, const String& text, const TextStyle& style, vector<CharInfo>& chars_out);
/// Prepare the lines, layout the text; at a specific scale
bool prepareLinesScale(RotatedDC& dc, const vector<CharInfo>& chars, const TextStyle& style, bool stop_if_too_long);
/** Stores output in lines_out */
bool prepareLinesScale(RotatedDC& dc, const vector<CharInfo>& chars, const TextStyle& style, bool stop_if_too_long, vector<Line>& lines_out) const;
/// Align the lines within the textbox
void alignLines(RotatedDC& dc, const vector<CharInfo>& chars, const TextStyle& style);
@@ -143,9 +148,9 @@ class TextViewer {
const Line& findLine(size_t index) const;
// helper : get the start coordinate of a line, this is 0 unless there is a contour mask
double lineLeft (RotatedDC& dc, const TextStyle& style, double y);
double lineLeft (RotatedDC& dc, const TextStyle& style, double y) const;
// helper : get the end coordinate of a line, this is width unless there is a contour mask
double lineRight(RotatedDC& dc, const TextStyle& style, double y);
double lineRight(RotatedDC& dc, const TextStyle& style, double y) const;
};